drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/slab.h>
  25 #include <linux/pci.h>
  26 #include <linux/kthread.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi.h>
  30 #include <scsi/scsi_device.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport_fc.h>
  33
  34 #include "lpfc_hw4.h"
  35 #include "lpfc_hw.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_sli.h"
  39 #include "lpfc_sli4.h"
  40 #include "lpfc_scsi.h"
  41 #include "lpfc.h"
  42 #include "lpfc_logmsg.h"
  43 #include "lpfc_crtn.h"
  44 #include "lpfc_vport.h"
  45 #include "lpfc_debugfs.h"
  46
  47 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  48 static uint8_t lpfcAlpaArray[] = {
  49         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  50         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  51         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  52         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  53         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  54         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  55         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  56         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  57         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  58         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  59         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  60         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  61         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  62 };
  63
  64 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  65 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  66 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  67 static int lpfc_fcf_inuse(struct lpfc_hba *);
  68
  69 void
  70 lpfc_terminate_rport_io(struct fc_rport *rport)
  71 {
  72         struct lpfc_rport_data *rdata;
  73         struct lpfc_nodelist * ndlp;
  74         struct lpfc_hba *phba;
  75
  76         rdata = rport->dd_data;
  77         ndlp = rdata->pnode;
  78
  79         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  80                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  81                         printk(KERN_ERR "Cannot find remote node"
  82                         " to terminate I/O Data x%x\n",
  83                         rport->port_id);
  84                 return;
  85         }
  86
  87         phba  = ndlp->phba;
  88
  89         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  90                 "rport terminate: sid:x%x did:x%x flg:x%x",
  91                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  92
  93         if (ndlp->nlp_sid != NLP_NO_SID) {
  94                 lpfc_sli_abort_iocb(ndlp->vport,
  95                         &phba->sli.ring[phba->sli.fcp_ring],
  96                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  97         }
  98 }
  99
 100 /*
 101  * This function will be called when dev_loss_tmo fire.
 102  */
 103 void
 104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 105 {
 106         struct lpfc_rport_data *rdata;
 107         struct lpfc_nodelist * ndlp;
 108         struct lpfc_vport *vport;
 109         struct lpfc_hba   *phba;
 110         struct lpfc_work_evt *evtp;
 111         int  put_node;
 112         int  put_rport;
 113
 114         rdata = rport->dd_data;
 115         ndlp = rdata->pnode;
 116         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 117                 return;
 118
 119         vport = ndlp->vport;
 120         phba  = vport->phba;
 121
 122         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 123                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 124                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 125
 126         /* Don't defer this if we are in the process of deleting the vport
 127          * or unloading the driver. The unload will cleanup the node
 128          * appropriately we just need to cleanup the ndlp rport info here.
 129          */
 130         if (vport->load_flag & FC_UNLOADING) {
 131                 put_node = rdata->pnode != NULL;
 132                 put_rport = ndlp->rport != NULL;
 133                 rdata->pnode = NULL;
 134                 ndlp->rport = NULL;
 135                 if (put_node)
 136                         lpfc_nlp_put(ndlp);
 137                 if (put_rport)
 138                         put_device(&rport->dev);
 139                 return;
 140         }
 141
 142         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 143                 return;
 144
 145         evtp = &ndlp->dev_loss_evt;
 146
 147         if (!list_empty(&evtp->evt_listp))
 148                 return;
 149
 150         spin_lock_irq(&phba->hbalock);
 151         /* We need to hold the node by incrementing the reference
 152          * count until this queued work is done
 153          */
 154         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 155         if (evtp->evt_arg1) {
 156                 evtp->evt = LPFC_EVT_DEV_LOSS;
 157                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 158                 lpfc_worker_wake_up(phba);
 159         }
 160         spin_unlock_irq(&phba->hbalock);
 161
 162         return;
 163 }
 164
 165 /**
 166  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 167  * @ndlp: Pointer to remote node object.
 168  *
 169  * This function is called from the worker thread when devloss timeout timer
 170  * expires. For SLI4 host, this routine shall return 1 when at lease one
 171  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 172  * routine shall return 0 when there is no remote node is still in use of FCF
 173  * when devloss timeout happened to this @ndlp.
 174  **/
 175 static int
 176 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 177 {
 178         struct lpfc_rport_data *rdata;
 179         struct fc_rport   *rport;
 180         struct lpfc_vport *vport;
 181         struct lpfc_hba   *phba;
 182         uint8_t *name;
 183         int  put_node;
 184         int  put_rport;
 185         int warn_on = 0;
 186         int fcf_inuse = 0;
 187
 188         rport = ndlp->rport;
 189
 190         if (!rport)
 191                 return fcf_inuse;
 192
 193         rdata = rport->dd_data;
 194         name = (uint8_t *) &ndlp->nlp_portname;
 195         vport = ndlp->vport;
 196         phba  = vport->phba;
 197
 198         if (phba->sli_rev == LPFC_SLI_REV4)
 199                 fcf_inuse = lpfc_fcf_inuse(phba);
 200
 201         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 202                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 203                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 204
 205         /* Don't defer this if we are in the process of deleting the vport
 206          * or unloading the driver. The unload will cleanup the node
 207          * appropriately we just need to cleanup the ndlp rport info here.
 208          */
 209         if (vport->load_flag & FC_UNLOADING) {
 210                 if (ndlp->nlp_sid != NLP_NO_SID) {
 211                         /* flush the target */
 212                         lpfc_sli_abort_iocb(vport,
 213                                         &phba->sli.ring[phba->sli.fcp_ring],
 214                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 215                 }
 216                 put_node = rdata->pnode != NULL;
 217                 put_rport = ndlp->rport != NULL;
 218                 rdata->pnode = NULL;
 219                 ndlp->rport = NULL;
 220                 if (put_node)
 221                         lpfc_nlp_put(ndlp);
 222                 if (put_rport)
 223                         put_device(&rport->dev);
 224                 return fcf_inuse;
 225         }
 226
 227         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 228                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 229                                  "0284 Devloss timeout Ignored on "
 230                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 231                                  "NPort x%x\n",
 232                                  *name, *(name+1), *(name+2), *(name+3),
 233                                  *(name+4), *(name+5), *(name+6), *(name+7),
 234                                  ndlp->nlp_DID);
 235                 return fcf_inuse;
 236         }
 237
 238         if (ndlp->nlp_type & NLP_FABRIC) {
 239                 /* We will clean up these Nodes in linkup */
 240                 put_node = rdata->pnode != NULL;
 241                 put_rport = ndlp->rport != NULL;
 242                 rdata->pnode = NULL;
 243                 ndlp->rport = NULL;
 244                 if (put_node)
 245                         lpfc_nlp_put(ndlp);
 246                 if (put_rport)
 247                         put_device(&rport->dev);
 248                 return fcf_inuse;
 249         }
 250
 251         if (ndlp->nlp_sid != NLP_NO_SID) {
 252                 warn_on = 1;
 253                 /* flush the target */
 254                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 255                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 256         }
 257
 258         if (warn_on) {
 259                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 260                                  "0203 Devloss timeout on "
 261                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 262                                  "NPort x%06x Data: x%x x%x x%x\n",
 263                                  *name, *(name+1), *(name+2), *(name+3),
 264                                  *(name+4), *(name+5), *(name+6), *(name+7),
 265                                  ndlp->nlp_DID, ndlp->nlp_flag,
 266                                  ndlp->nlp_state, ndlp->nlp_rpi);
 267         } else {
 268                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 269                                  "0204 Devloss timeout on "
 270                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 271                                  "NPort x%06x Data: x%x x%x x%x\n",
 272                                  *name, *(name+1), *(name+2), *(name+3),
 273                                  *(name+4), *(name+5), *(name+6), *(name+7),
 274                                  ndlp->nlp_DID, ndlp->nlp_flag,
 275                                  ndlp->nlp_state, ndlp->nlp_rpi);
 276         }
 277
 278         put_node = rdata->pnode != NULL;
 279         put_rport = ndlp->rport != NULL;
 280         rdata->pnode = NULL;
 281         ndlp->rport = NULL;
 282         if (put_node)
 283                 lpfc_nlp_put(ndlp);
 284         if (put_rport)
 285                 put_device(&rport->dev);
 286
 287         if (!(vport->load_flag & FC_UNLOADING) &&
 288             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 289             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 290             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 291             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 292             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 293                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 294
 295         return fcf_inuse;
 296 }
 297
 298 /**
 299  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 300  * @phba: Pointer to hba context object.
 301  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 302  * @nlp_did: remote node identifer with devloss timeout.
 303  *
 304  * This function is called from the worker thread after invoking devloss
 305  * timeout handler and releasing the reference count for the ndlp with
 306  * which the devloss timeout was handled for SLI4 host. For the devloss
 307  * timeout of the last remote node which had been in use of FCF, when this
 308  * routine is invoked, it shall be guaranteed that none of the remote are
 309  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 310  * if the FIP engine is neither in FCF table scan process nor roundrobin
 311  * failover process, the in-use FCF shall be unregistered. If the FIP
 312  * engine is in FCF discovery process, the devloss timeout state shall
 313  * be set for either the FCF table scan process or roundrobin failover
 314  * process to unregister the in-use FCF.
 315  **/
 316 static void
 317 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 318                                     uint32_t nlp_did)
 319 {
 320         /* If devloss timeout happened to a remote node when FCF had no
 321          * longer been in-use, do nothing.
 322          */
 323         if (!fcf_inuse)
 324                 return;
 325
 326         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 327                 spin_lock_irq(&phba->hbalock);
 328                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 329                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 330                                 spin_unlock_irq(&phba->hbalock);
 331                                 return;
 332                         }
 333                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 334                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 335                                         "2847 Last remote node (x%x) using "
 336                                         "FCF devloss tmo\n", nlp_did);
 337                 }
 338                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 339                         spin_unlock_irq(&phba->hbalock);
 340                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 341                                         "2868 Devloss tmo to FCF rediscovery "
 342                                         "in progress\n");
 343                         return;
 344                 }
 345                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 346                         spin_unlock_irq(&phba->hbalock);
 347                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 348                                         "2869 Devloss tmo to idle FIP engine, "
 349                                         "unreg in-use FCF and rescan.\n");
 350                         /* Unregister in-use FCF and rescan */
 351                         lpfc_unregister_fcf_rescan(phba);
 352                         return;
 353                 }
 354                 spin_unlock_irq(&phba->hbalock);
 355                 if (phba->hba_flag & FCF_TS_INPROG)
 356                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 357                                         "2870 FCF table scan in progress\n");
 358                 if (phba->hba_flag & FCF_RR_INPROG)
 359                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 360                                         "2871 FLOGI roundrobin FCF failover "
 361                                         "in progress\n");
 362         }
 363         lpfc_unregister_unused_fcf(phba);
 364 }
 365
 366 /**
 367  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 368  * @phba: Pointer to hba context object.
 369  *
 370  * This function is called from the functions which need to post
 371  * events from interrupt context. This function allocates data
 372  * structure required for posting event. It also keeps track of
 373  * number of events pending and prevent event storm when there are
 374  * too many events.
 375  **/
 376 struct lpfc_fast_path_event *
 377 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 378         struct lpfc_fast_path_event *ret;
 379
 380         /* If there are lot of fast event do not exhaust memory due to this */
 381         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 382                 return NULL;
 383
 384         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 385                         GFP_ATOMIC);
 386         if (ret) {
 387                 atomic_inc(&phba->fast_event_count);
 388                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 389                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 390         }
 391         return ret;
 392 }
 393
 394 /**
 395  * lpfc_free_fast_evt - Frees event data structure
 396  * @phba: Pointer to hba context object.
 397  * @evt:  Event object which need to be freed.
 398  *
 399  * This function frees the data structure required for posting
 400  * events.
 401  **/
 402 void
 403 lpfc_free_fast_evt(struct lpfc_hba *phba,
 404                 struct lpfc_fast_path_event *evt) {
 405
 406         atomic_dec(&phba->fast_event_count);
 407         kfree(evt);
 408 }
 409
 410 /**
 411  * lpfc_send_fastpath_evt - Posts events generated from fast path
 412  * @phba: Pointer to hba context object.
 413  * @evtp: Event data structure.
 414  *
 415  * This function is called from worker thread, when the interrupt
 416  * context need to post an event. This function posts the event
 417  * to fc transport netlink interface.
 418  **/
 419 static void
 420 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 421                 struct lpfc_work_evt *evtp)
 422 {
 423         unsigned long evt_category, evt_sub_category;
 424         struct lpfc_fast_path_event *fast_evt_data;
 425         char *evt_data;
 426         uint32_t evt_data_size;
 427         struct Scsi_Host *shost;
 428
 429         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 430                 work_evt);
 431
 432         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 433         evt_sub_category = (unsigned long) fast_evt_data->un.
 434                         fabric_evt.subcategory;
 435         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 436         if (evt_category == FC_REG_FABRIC_EVENT) {
 437                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 438                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 439                         evt_data_size = sizeof(fast_evt_data->un.
 440                                 read_check_error);
 441                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 442                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 443                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 444                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 445                 } else {
 446                         lpfc_free_fast_evt(phba, fast_evt_data);
 447                         return;
 448                 }
 449         } else if (evt_category == FC_REG_SCSI_EVENT) {
 450                 switch (evt_sub_category) {
 451                 case LPFC_EVENT_QFULL:
 452                 case LPFC_EVENT_DEVBSY:
 453                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 454                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 455                         break;
 456                 case LPFC_EVENT_CHECK_COND:
 457                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 458                         evt_data_size =  sizeof(fast_evt_data->un.
 459                                 check_cond_evt);
 460                         break;
 461                 case LPFC_EVENT_VARQUEDEPTH:
 462                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 463                         evt_data_size = sizeof(fast_evt_data->un.
 464                                 queue_depth_evt);
 465                         break;
 466                 default:
 467                         lpfc_free_fast_evt(phba, fast_evt_data);
 468                         return;
 469                 }
 470         } else {
 471                 lpfc_free_fast_evt(phba, fast_evt_data);
 472                 return;
 473         }
 474
 475         fc_host_post_vendor_event(shost,
 476                 fc_get_event_number(),
 477                 evt_data_size,
 478                 evt_data,
 479                 LPFC_NL_VENDOR_ID);
 480
 481         lpfc_free_fast_evt(phba, fast_evt_data);
 482         return;
 483 }
 484
 485 static void
 486 lpfc_work_list_done(struct lpfc_hba *phba)
 487 {
 488         struct lpfc_work_evt  *evtp = NULL;
 489         struct lpfc_nodelist  *ndlp;
 490         int free_evt;
 491         int fcf_inuse;
 492         uint32_t nlp_did;
 493
 494         spin_lock_irq(&phba->hbalock);
 495         while (!list_empty(&phba->work_list)) {
 496                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 497                                  evt_listp);
 498                 spin_unlock_irq(&phba->hbalock);
 499                 free_evt = 1;
 500                 switch (evtp->evt) {
 501                 case LPFC_EVT_ELS_RETRY:
 502                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 503                         lpfc_els_retry_delay_handler(ndlp);
 504                         free_evt = 0; /* evt is part of ndlp */
 505                         /* decrement the node reference count held
 506                          * for this queued work
 507                          */
 508                         lpfc_nlp_put(ndlp);
 509                         break;
 510                 case LPFC_EVT_DEV_LOSS:
 511                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 512                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 513                         free_evt = 0;
 514                         /* decrement the node reference count held for
 515                          * this queued work
 516                          */
 517                         nlp_did = ndlp->nlp_DID;
 518                         lpfc_nlp_put(ndlp);
 519                         if (phba->sli_rev == LPFC_SLI_REV4)
 520                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 521                                                                     fcf_inuse,
 522                                                                     nlp_did);
 523                         break;
 524                 case LPFC_EVT_ONLINE:
 525                         if (phba->link_state < LPFC_LINK_DOWN)
 526                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 527                         else
 528                                 *(int *) (evtp->evt_arg1) = 0;
 529                         complete((struct completion *)(evtp->evt_arg2));
 530                         break;
 531                 case LPFC_EVT_OFFLINE_PREP:
 532                         if (phba->link_state >= LPFC_LINK_DOWN)
 533                                 lpfc_offline_prep(phba);
 534                         *(int *)(evtp->evt_arg1) = 0;
 535                         complete((struct completion *)(evtp->evt_arg2));
 536                         break;
 537                 case LPFC_EVT_OFFLINE:
 538                         lpfc_offline(phba);
 539                         lpfc_sli_brdrestart(phba);
 540                         *(int *)(evtp->evt_arg1) =
 541                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 542                         lpfc_unblock_mgmt_io(phba);
 543                         complete((struct completion *)(evtp->evt_arg2));
 544                         break;
 545                 case LPFC_EVT_WARM_START:
 546                         lpfc_offline(phba);
 547                         lpfc_reset_barrier(phba);
 548                         lpfc_sli_brdreset(phba);
 549                         lpfc_hba_down_post(phba);
 550                         *(int *)(evtp->evt_arg1) =
 551                                 lpfc_sli_brdready(phba, HS_MBRDY);
 552                         lpfc_unblock_mgmt_io(phba);
 553                         complete((struct completion *)(evtp->evt_arg2));
 554                         break;
 555                 case LPFC_EVT_KILL:
 556                         lpfc_offline(phba);
 557                         *(int *)(evtp->evt_arg1)
 558                                 = (phba->pport->stopped)
 559                                         ? 0 : lpfc_sli_brdkill(phba);
 560                         lpfc_unblock_mgmt_io(phba);
 561                         complete((struct completion *)(evtp->evt_arg2));
 562                         break;
 563                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 564                         lpfc_send_fastpath_evt(phba, evtp);
 565                         free_evt = 0;
 566                         break;
 567                 case LPFC_EVT_RESET_HBA:
 568                         if (!(phba->pport->load_flag & FC_UNLOADING))
 569                                 lpfc_reset_hba(phba);
 570                         break;
 571                 }
 572                 if (free_evt)
 573                         kfree(evtp);
 574                 spin_lock_irq(&phba->hbalock);
 575         }
 576         spin_unlock_irq(&phba->hbalock);
 577
 578 }
 579
 580 static void
 581 lpfc_work_done(struct lpfc_hba *phba)
 582 {
 583         struct lpfc_sli_ring *pring;
 584         uint32_t ha_copy, status, control, work_port_events;
 585         struct lpfc_vport **vports;
 586         struct lpfc_vport *vport;
 587         int i;
 588
 589         spin_lock_irq(&phba->hbalock);
 590         ha_copy = phba->work_ha;
 591         phba->work_ha = 0;
 592         spin_unlock_irq(&phba->hbalock);
 593
 594         /* First, try to post the next mailbox command to SLI4 device */
 595         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 596                 lpfc_sli4_post_async_mbox(phba);
 597
 598         if (ha_copy & HA_ERATT)
 599                 /* Handle the error attention event */
 600                 lpfc_handle_eratt(phba);
 601
 602         if (ha_copy & HA_MBATT)
 603                 lpfc_sli_handle_mb_event(phba);
 604
 605         if (ha_copy & HA_LATT)
 606                 lpfc_handle_latt(phba);
 607
 608         /* Process SLI4 events */
 609         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 610                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 611                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 612                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 613                         lpfc_sli4_els_xri_abort_event_proc(phba);
 614                 if (phba->hba_flag & ASYNC_EVENT)
 615                         lpfc_sli4_async_event_proc(phba);
 616                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 617                         spin_lock_irq(&phba->hbalock);
 618                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 619                         spin_unlock_irq(&phba->hbalock);
 620                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 621                 }
 622                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 623                         lpfc_sli4_fcf_redisc_event_proc(phba);
 624         }
 625
 626         vports = lpfc_create_vport_work_array(phba);
 627         if (vports != NULL)
 628                 for (i = 0; i <= phba->max_vports; i++) {
 629                         /*
 630                          * We could have no vports in array if unloading, so if
 631                          * this happens then just use the pport
 632                          */
 633                         if (vports[i] == NULL && i == 0)
 634                                 vport = phba->pport;
 635                         else
 636                                 vport = vports[i];
 637                         if (vport == NULL)
 638                                 break;
 639                         spin_lock_irq(&vport->work_port_lock);
 640                         work_port_events = vport->work_port_events;
 641                         vport->work_port_events &= ~work_port_events;
 642                         spin_unlock_irq(&vport->work_port_lock);
 643                         if (work_port_events & WORKER_DISC_TMO)
 644                                 lpfc_disc_timeout_handler(vport);
 645                         if (work_port_events & WORKER_ELS_TMO)
 646                                 lpfc_els_timeout_handler(vport);
 647                         if (work_port_events & WORKER_HB_TMO)
 648                                 lpfc_hb_timeout_handler(phba);
 649                         if (work_port_events & WORKER_MBOX_TMO)
 650                                 lpfc_mbox_timeout_handler(phba);
 651                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 652                                 lpfc_unblock_fabric_iocbs(phba);
 653                         if (work_port_events & WORKER_FDMI_TMO)
 654                                 lpfc_fdmi_timeout_handler(vport);
 655                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 656                                 lpfc_ramp_down_queue_handler(phba);
 657                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 658                                 lpfc_ramp_up_queue_handler(phba);
 659                 }
 660         lpfc_destroy_vport_work_array(phba, vports);
 661
 662         pring = &phba->sli.ring[LPFC_ELS_RING];
 663         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 664         status >>= (4*LPFC_ELS_RING);
 665         if ((status & HA_RXMASK) ||
 666             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 667             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 668                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 669                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 670                         /* Set the lpfc data pending flag */
 671                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 672                 } else {
 673                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 674                         lpfc_sli_handle_slow_ring_event(phba, pring,
 675                                                         (status &
 676                                                          HA_RXMASK));
 677                 }
 678                 if ((phba->sli_rev == LPFC_SLI_REV4) && pring->txq_cnt)
 679                         lpfc_drain_txq(phba);
 680                 /*
 681                  * Turn on Ring interrupts
 682                  */
 683                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 684                         spin_lock_irq(&phba->hbalock);
 685                         control = readl(phba->HCregaddr);
 686                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 687                                 lpfc_debugfs_slow_ring_trc(phba,
 688                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 689                                         control, ha_copy, 0);
 690
 691                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 692                                 writel(control, phba->HCregaddr);
 693                                 readl(phba->HCregaddr); /* flush */
 694                         } else {
 695                                 lpfc_debugfs_slow_ring_trc(phba,
 696                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 697                                         control, ha_copy, 0);
 698                         }
 699                         spin_unlock_irq(&phba->hbalock);
 700                 }
 701         }
 702         lpfc_work_list_done(phba);
 703 }
 704
 705 int
 706 lpfc_do_work(void *p)
 707 {
 708         struct lpfc_hba *phba = p;
 709         int rc;
 710
 711         set_user_nice(current, -20);
 712         phba->data_flags = 0;
 713
 714         while (!kthread_should_stop()) {
 715                 /* wait and check worker queue activities */
 716                 rc = wait_event_interruptible(phba->work_waitq,
 717                                         (test_and_clear_bit(LPFC_DATA_READY,
 718                                                             &phba->data_flags)
 719                                          || kthread_should_stop()));
 720                 /* Signal wakeup shall terminate the worker thread */
 721                 if (rc) {
 722                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 723                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 724                         break;
 725                 }
 726
 727                 /* Attend pending lpfc data processing */
 728                 lpfc_work_done(phba);
 729         }
 730         phba->worker_thread = NULL;
 731         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 732                         "0432 Worker thread stopped.\n");
 733         return 0;
 734 }
 735
 736 /*
 737  * This is only called to handle FC worker events. Since this a rare
 738  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 739  * embedding it in the IOCB.
 740  */
 741 int
 742 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 743                       uint32_t evt)
 744 {
 745         struct lpfc_work_evt  *evtp;
 746         unsigned long flags;
 747
 748         /*
 749          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 750          * be queued to worker thread for processing
 751          */
 752         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 753         if (!evtp)
 754                 return 0;
 755
 756         evtp->evt_arg1  = arg1;
 757         evtp->evt_arg2  = arg2;
 758         evtp->evt       = evt;
 759
 760         spin_lock_irqsave(&phba->hbalock, flags);
 761         list_add_tail(&evtp->evt_listp, &phba->work_list);
 762         spin_unlock_irqrestore(&phba->hbalock, flags);
 763
 764         lpfc_worker_wake_up(phba);
 765
 766         return 1;
 767 }
 768
 769 void
 770 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 771 {
 772         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 773         struct lpfc_hba  *phba = vport->phba;
 774         struct lpfc_nodelist *ndlp, *next_ndlp;
 775         int  rc;
 776
 777         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 778                 if (!NLP_CHK_NODE_ACT(ndlp))
 779                         continue;
 780                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 781                         continue;
 782                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 783                         ((vport->port_type == LPFC_NPIV_PORT) &&
 784                         (ndlp->nlp_DID == NameServer_DID)))
 785                         lpfc_unreg_rpi(vport, ndlp);
 786
 787                 /* Leave Fabric nodes alone on link down */
 788                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 789                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 790                         continue;
 791                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 792                                              remove
 793                                              ? NLP_EVT_DEVICE_RM
 794                                              : NLP_EVT_DEVICE_RECOVERY);
 795         }
 796         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 797                 if (phba->sli_rev == LPFC_SLI_REV4)
 798                         lpfc_sli4_unreg_all_rpis(vport);
 799                 lpfc_mbx_unreg_vpi(vport);
 800                 spin_lock_irq(shost->host_lock);
 801                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 802                 spin_unlock_irq(shost->host_lock);
 803         }
 804 }
 805
 806 void
 807 lpfc_port_link_failure(struct lpfc_vport *vport)
 808 {
 809         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 810
 811         /* Cleanup any outstanding received buffers */
 812         lpfc_cleanup_rcv_buffers(vport);
 813
 814         /* Cleanup any outstanding RSCN activity */
 815         lpfc_els_flush_rscn(vport);
 816
 817         /* Cleanup any outstanding ELS commands */
 818         lpfc_els_flush_cmd(vport);
 819
 820         lpfc_cleanup_rpis(vport, 0);
 821
 822         /* Turn off discovery timer if its running */
 823         lpfc_can_disctmo(vport);
 824 }
 825
 826 void
 827 lpfc_linkdown_port(struct lpfc_vport *vport)
 828 {
 829         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 830
 831         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 832
 833         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 834                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 835                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 836
 837         lpfc_port_link_failure(vport);
 838
 839 }
 840
 841 int
 842 lpfc_linkdown(struct lpfc_hba *phba)
 843 {
 844         struct lpfc_vport *vport = phba->pport;
 845         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 846         struct lpfc_vport **vports;
 847         LPFC_MBOXQ_t          *mb;
 848         int i;
 849
 850         if (phba->link_state == LPFC_LINK_DOWN)
 851                 return 0;
 852
 853         /* Block all SCSI stack I/Os */
 854         lpfc_scsi_dev_block(phba);
 855
 856         spin_lock_irq(&phba->hbalock);
 857         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 858         spin_unlock_irq(&phba->hbalock);
 859         if (phba->link_state > LPFC_LINK_DOWN) {
 860                 phba->link_state = LPFC_LINK_DOWN;
 861                 spin_lock_irq(shost->host_lock);
 862                 phba->pport->fc_flag &= ~FC_LBIT;
 863                 spin_unlock_irq(shost->host_lock);
 864         }
 865         vports = lpfc_create_vport_work_array(phba);
 866         if (vports != NULL)
 867                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 868                         /* Issue a LINK DOWN event to all nodes */
 869                         lpfc_linkdown_port(vports[i]);
 870                 }
 871         lpfc_destroy_vport_work_array(phba, vports);
 872         /* Clean up any firmware default rpi's */
 873         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 874         if (mb) {
 875                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 876                 mb->vport = vport;
 877                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 878                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 879                     == MBX_NOT_FINISHED) {
 880                         mempool_free(mb, phba->mbox_mem_pool);
 881                 }
 882         }
 883
 884         /* Setup myDID for link up if we are in pt2pt mode */
 885         if (phba->pport->fc_flag & FC_PT2PT) {
 886                 phba->pport->fc_myDID = 0;
 887                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 888                 if (mb) {
 889                         lpfc_config_link(phba, mb);
 890                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 891                         mb->vport = vport;
 892                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 893                             == MBX_NOT_FINISHED) {
 894                                 mempool_free(mb, phba->mbox_mem_pool);
 895                         }
 896                 }
 897                 spin_lock_irq(shost->host_lock);
 898                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 899                 spin_unlock_irq(shost->host_lock);
 900         }
 901
 902         return 0;
 903 }
 904
 905 static void
 906 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 907 {
 908         struct lpfc_nodelist *ndlp;
 909
 910         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 911                 if (!NLP_CHK_NODE_ACT(ndlp))
 912                         continue;
 913                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 914                         continue;
 915                 if (ndlp->nlp_type & NLP_FABRIC) {
 916                         /* On Linkup its safe to clean up the ndlp
 917                          * from Fabric connections.
 918                          */
 919                         if (ndlp->nlp_DID != Fabric_DID)
 920                                 lpfc_unreg_rpi(vport, ndlp);
 921                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 922                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 923                         /* Fail outstanding IO now since device is
 924                          * marked for PLOGI.
 925                          */
 926                         lpfc_unreg_rpi(vport, ndlp);
 927                 }
 928         }
 929 }
 930
 931 static void
 932 lpfc_linkup_port(struct lpfc_vport *vport)
 933 {
 934         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 935         struct lpfc_hba  *phba = vport->phba;
 936
 937         if ((vport->load_flag & FC_UNLOADING) != 0)
 938                 return;
 939
 940         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 941                 "Link Up:         top:x%x speed:x%x flg:x%x",
 942                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 943
 944         /* If NPIV is not enabled, only bring the physical port up */
 945         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 946                 (vport != phba->pport))
 947                 return;
 948
 949         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 950
 951         spin_lock_irq(shost->host_lock);
 952         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 953                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 954         vport->fc_flag |= FC_NDISC_ACTIVE;
 955         vport->fc_ns_retry = 0;
 956         spin_unlock_irq(shost->host_lock);
 957
 958         if (vport->fc_flag & FC_LBIT)
 959                 lpfc_linkup_cleanup_nodes(vport);
 960
 961 }
 962
 963 static int
 964 lpfc_linkup(struct lpfc_hba *phba)
 965 {
 966         struct lpfc_vport **vports;
 967         int i;
 968
 969         phba->link_state = LPFC_LINK_UP;
 970
 971         /* Unblock fabric iocbs if they are blocked */
 972         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 973         del_timer_sync(&phba->fabric_block_timer);
 974
 975         vports = lpfc_create_vport_work_array(phba);
 976         if (vports != NULL)
 977                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 978                         lpfc_linkup_port(vports[i]);
 979         lpfc_destroy_vport_work_array(phba, vports);
 980         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 981             (phba->sli_rev < LPFC_SLI_REV4))
 982                 lpfc_issue_clear_la(phba, phba->pport);
 983
 984         return 0;
 985 }
 986
 987 /*
 988  * This routine handles processing a CLEAR_LA mailbox
 989  * command upon completion. It is setup in the LPFC_MBOXQ
 990  * as the completion routine when the command is
 991  * handed off to the SLI layer.
 992  */
 993 static void
 994 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 995 {
 996         struct lpfc_vport *vport = pmb->vport;
 997         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 998         struct lpfc_sli   *psli = &phba->sli;
 999         MAILBOX_t *mb = &pmb->u.mb;
1000         uint32_t control;
1001
1002         /* Since we don't do discovery right now, turn these off here */
1003         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1004         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1005         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1006
1007         /* Check for error */
1008         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1009                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1010                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1011                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1012                                  "state x%x\n",
1013                                  mb->mbxStatus, vport->port_state);
1014                 phba->link_state = LPFC_HBA_ERROR;
1015                 goto out;
1016         }
1017
1018         if (vport->port_type == LPFC_PHYSICAL_PORT)
1019                 phba->link_state = LPFC_HBA_READY;
1020
1021         spin_lock_irq(&phba->hbalock);
1022         psli->sli_flag |= LPFC_PROCESS_LA;
1023         control = readl(phba->HCregaddr);
1024         control |= HC_LAINT_ENA;
1025         writel(control, phba->HCregaddr);
1026         readl(phba->HCregaddr); /* flush */
1027         spin_unlock_irq(&phba->hbalock);
1028         mempool_free(pmb, phba->mbox_mem_pool);
1029         return;
1030
1031 out:
1032         /* Device Discovery completes */
1033         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1034                          "0225 Device Discovery completes\n");
1035         mempool_free(pmb, phba->mbox_mem_pool);
1036
1037         spin_lock_irq(shost->host_lock);
1038         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1039         spin_unlock_irq(shost->host_lock);
1040
1041         lpfc_can_disctmo(vport);
1042
1043         /* turn on Link Attention interrupts */
1044
1045         spin_lock_irq(&phba->hbalock);
1046         psli->sli_flag |= LPFC_PROCESS_LA;
1047         control = readl(phba->HCregaddr);
1048         control |= HC_LAINT_ENA;
1049         writel(control, phba->HCregaddr);
1050         readl(phba->HCregaddr); /* flush */
1051         spin_unlock_irq(&phba->hbalock);
1052
1053         return;
1054 }
1055
1056
1057 static void
1058 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1059 {
1060         struct lpfc_vport *vport = pmb->vport;
1061
1062         if (pmb->u.mb.mbxStatus)
1063                 goto out;
1064
1065         mempool_free(pmb, phba->mbox_mem_pool);
1066
1067         if (phba->fc_topology == TOPOLOGY_LOOP &&
1068             vport->fc_flag & FC_PUBLIC_LOOP &&
1069             !(vport->fc_flag & FC_LBIT)) {
1070                         /* Need to wait for FAN - use discovery timer
1071                          * for timeout.  port_state is identically
1072                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1073                          */
1074                         lpfc_set_disctmo(vport);
1075                         return;
1076         }
1077
1078         /* Start discovery by sending a FLOGI. port_state is identically
1079          * LPFC_FLOGI while waiting for FLOGI cmpl
1080          */
1081         if (vport->port_state != LPFC_FLOGI) {
1082                 lpfc_initial_flogi(vport);
1083         }
1084         return;
1085
1086 out:
1087         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1088                          "0306 CONFIG_LINK mbxStatus error x%x "
1089                          "HBA state x%x\n",
1090                          pmb->u.mb.mbxStatus, vport->port_state);
1091         mempool_free(pmb, phba->mbox_mem_pool);
1092
1093         lpfc_linkdown(phba);
1094
1095         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1096                          "0200 CONFIG_LINK bad hba state x%x\n",
1097                          vport->port_state);
1098
1099         lpfc_issue_clear_la(phba, vport);
1100         return;
1101 }
1102
1103 static void
1104 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1105 {
1106         struct lpfc_vport *vport = mboxq->vport;
1107
1108         if (mboxq->u.mb.mbxStatus) {
1109                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1110                          "2017 REG_FCFI mbxStatus error x%x "
1111                          "HBA state x%x\n",
1112                          mboxq->u.mb.mbxStatus, vport->port_state);
1113                 goto fail_out;
1114         }
1115
1116         /* Start FCoE discovery by sending a FLOGI. */
1117         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1118         /* Set the FCFI registered flag */
1119         spin_lock_irq(&phba->hbalock);
1120         phba->fcf.fcf_flag |= FCF_REGISTERED;
1121         spin_unlock_irq(&phba->hbalock);
1122
1123         /* If there is a pending FCoE event, restart FCF table scan. */
1124         if (lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1125                 goto fail_out;
1126
1127         /* Mark successful completion of FCF table scan */
1128         spin_lock_irq(&phba->hbalock);
1129         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1130         phba->hba_flag &= ~FCF_TS_INPROG;
1131         if (vport->port_state != LPFC_FLOGI) {
1132                 phba->hba_flag |= FCF_RR_INPROG;
1133                 spin_unlock_irq(&phba->hbalock);
1134                 lpfc_initial_flogi(vport);
1135                 goto out;
1136         }
1137         spin_unlock_irq(&phba->hbalock);
1138         goto out;
1139
1140 fail_out:
1141         spin_lock_irq(&phba->hbalock);
1142         phba->hba_flag &= ~FCF_RR_INPROG;
1143         spin_unlock_irq(&phba->hbalock);
1144 out:
1145         mempool_free(mboxq, phba->mbox_mem_pool);
1146 }
1147
1148 /**
1149  * lpfc_fab_name_match - Check if the fcf fabric name match.
1150  * @fab_name: pointer to fabric name.
1151  * @new_fcf_record: pointer to fcf record.
1152  *
1153  * This routine compare the fcf record's fabric name with provided
1154  * fabric name. If the fabric name are identical this function
1155  * returns 1 else return 0.
1156  **/
1157 static uint32_t
1158 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1159 {
1160         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1161                 return 0;
1162         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1163                 return 0;
1164         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1165                 return 0;
1166         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1167                 return 0;
1168         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1169                 return 0;
1170         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1171                 return 0;
1172         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1173                 return 0;
1174         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1175                 return 0;
1176         return 1;
1177 }
1178
1179 /**
1180  * lpfc_sw_name_match - Check if the fcf switch name match.
1181  * @fab_name: pointer to fabric name.
1182  * @new_fcf_record: pointer to fcf record.
1183  *
1184  * This routine compare the fcf record's switch name with provided
1185  * switch name. If the switch name are identical this function
1186  * returns 1 else return 0.
1187  **/
1188 static uint32_t
1189 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1190 {
1191         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1192                 return 0;
1193         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1194                 return 0;
1195         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1196                 return 0;
1197         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1198                 return 0;
1199         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1200                 return 0;
1201         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1202                 return 0;
1203         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1204                 return 0;
1205         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1206                 return 0;
1207         return 1;
1208 }
1209
1210 /**
1211  * lpfc_mac_addr_match - Check if the fcf mac address match.
1212  * @mac_addr: pointer to mac address.
1213  * @new_fcf_record: pointer to fcf record.
1214  *
1215  * This routine compare the fcf record's mac address with HBA's
1216  * FCF mac address. If the mac addresses are identical this function
1217  * returns 1 else return 0.
1218  **/
1219 static uint32_t
1220 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1221 {
1222         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1223                 return 0;
1224         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1225                 return 0;
1226         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1227                 return 0;
1228         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1229                 return 0;
1230         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1231                 return 0;
1232         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1233                 return 0;
1234         return 1;
1235 }
1236
1237 static bool
1238 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1239 {
1240         return (curr_vlan_id == new_vlan_id);
1241 }
1242
1243 /**
1244  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1245  * @fcf: pointer to driver fcf record.
1246  * @new_fcf_record: pointer to fcf record.
1247  *
1248  * This routine copies the FCF information from the FCF
1249  * record to lpfc_hba data structure.
1250  **/
1251 static void
1252 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1253                      struct fcf_record *new_fcf_record)
1254 {
1255         /* Fabric name */
1256         fcf_rec->fabric_name[0] =
1257                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1258         fcf_rec->fabric_name[1] =
1259                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1260         fcf_rec->fabric_name[2] =
1261                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1262         fcf_rec->fabric_name[3] =
1263                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1264         fcf_rec->fabric_name[4] =
1265                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1266         fcf_rec->fabric_name[5] =
1267                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1268         fcf_rec->fabric_name[6] =
1269                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1270         fcf_rec->fabric_name[7] =
1271                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1272         /* Mac address */
1273         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1274         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1275         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1276         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1277         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1278         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1279         /* FCF record index */
1280         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1281         /* FCF record priority */
1282         fcf_rec->priority = new_fcf_record->fip_priority;
1283         /* Switch name */
1284         fcf_rec->switch_name[0] =
1285                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1286         fcf_rec->switch_name[1] =
1287                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1288         fcf_rec->switch_name[2] =
1289                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1290         fcf_rec->switch_name[3] =
1291                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1292         fcf_rec->switch_name[4] =
1293                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1294         fcf_rec->switch_name[5] =
1295                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1296         fcf_rec->switch_name[6] =
1297                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1298         fcf_rec->switch_name[7] =
1299                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1300 }
1301
1302 /**
1303  * lpfc_update_fcf_record - Update driver fcf record
1304  * @phba: pointer to lpfc hba data structure.
1305  * @fcf_rec: pointer to driver fcf record.
1306  * @new_fcf_record: pointer to hba fcf record.
1307  * @addr_mode: address mode to be set to the driver fcf record.
1308  * @vlan_id: vlan tag to be set to the driver fcf record.
1309  * @flag: flag bits to be set to the driver fcf record.
1310  *
1311  * This routine updates the driver FCF record from the new HBA FCF record
1312  * together with the address mode, vlan_id, and other informations. This
1313  * routine is called with the host lock held.
1314  **/
1315 static void
1316 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1317                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1318                        uint16_t vlan_id, uint32_t flag)
1319 {
1320         /* Copy the fields from the HBA's FCF record */
1321         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1322         /* Update other fields of driver FCF record */
1323         fcf_rec->addr_mode = addr_mode;
1324         fcf_rec->vlan_id = vlan_id;
1325         fcf_rec->flag |= (flag | RECORD_VALID);
1326 }
1327
1328 /**
1329  * lpfc_register_fcf - Register the FCF with hba.
1330  * @phba: pointer to lpfc hba data structure.
1331  *
1332  * This routine issues a register fcfi mailbox command to register
1333  * the fcf with HBA.
1334  **/
1335 static void
1336 lpfc_register_fcf(struct lpfc_hba *phba)
1337 {
1338         LPFC_MBOXQ_t *fcf_mbxq;
1339         int rc;
1340
1341         spin_lock_irq(&phba->hbalock);
1342         /* If the FCF is not availabe do nothing. */
1343         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1344                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1345                 spin_unlock_irq(&phba->hbalock);
1346                 return;
1347         }
1348
1349         /* The FCF is already registered, start discovery */
1350         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1351                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1352                 phba->hba_flag &= ~FCF_TS_INPROG;
1353                 if (phba->pport->port_state != LPFC_FLOGI) {
1354                         phba->hba_flag |= FCF_RR_INPROG;
1355                         spin_unlock_irq(&phba->hbalock);
1356                         lpfc_initial_flogi(phba->pport);
1357                         return;
1358                 }
1359                 spin_unlock_irq(&phba->hbalock);
1360                 return;
1361         }
1362         spin_unlock_irq(&phba->hbalock);
1363
1364         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1365         if (!fcf_mbxq) {
1366                 spin_lock_irq(&phba->hbalock);
1367                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1368                 spin_unlock_irq(&phba->hbalock);
1369                 return;
1370         }
1371
1372         lpfc_reg_fcfi(phba, fcf_mbxq);
1373         fcf_mbxq->vport = phba->pport;
1374         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1375         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1376         if (rc == MBX_NOT_FINISHED) {
1377                 spin_lock_irq(&phba->hbalock);
1378                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1379                 spin_unlock_irq(&phba->hbalock);
1380                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1381         }
1382
1383         return;
1384 }
1385
1386 /**
1387  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1388  * @phba: pointer to lpfc hba data structure.
1389  * @new_fcf_record: pointer to fcf record.
1390  * @boot_flag: Indicates if this record used by boot bios.
1391  * @addr_mode: The address mode to be used by this FCF
1392  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1393  *
1394  * This routine compare the fcf record with connect list obtained from the
1395  * config region to decide if this FCF can be used for SAN discovery. It returns
1396  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1397  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1398  * is used by boot bios and addr_mode will indicate the addressing mode to be
1399  * used for this FCF when the function returns.
1400  * If the FCF record need to be used with a particular vlan id, the vlan is
1401  * set in the vlan_id on return of the function. If not VLAN tagging need to
1402  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1403  **/
1404 static int
1405 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1406                         struct fcf_record *new_fcf_record,
1407                         uint32_t *boot_flag, uint32_t *addr_mode,
1408                         uint16_t *vlan_id)
1409 {
1410         struct lpfc_fcf_conn_entry *conn_entry;
1411         int i, j, fcf_vlan_id = 0;
1412
1413         /* Find the lowest VLAN id in the FCF record */
1414         for (i = 0; i < 512; i++) {
1415                 if (new_fcf_record->vlan_bitmap[i]) {
1416                         fcf_vlan_id = i * 8;
1417                         j = 0;
1418                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1419                                 j++;
1420                                 fcf_vlan_id++;
1421                         }
1422                         break;
1423                 }
1424         }
1425
1426         /* If FCF not available return 0 */
1427         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1428                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1429                 return 0;
1430
1431         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1432                 *boot_flag = 0;
1433                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1434                                 new_fcf_record);
1435                 if (phba->valid_vlan)
1436                         *vlan_id = phba->vlan_id;
1437                 else
1438                         *vlan_id = LPFC_FCOE_NULL_VID;
1439                 return 1;
1440         }
1441
1442         /*
1443          * If there are no FCF connection table entry, driver connect to all
1444          * FCFs.
1445          */
1446         if (list_empty(&phba->fcf_conn_rec_list)) {
1447                 *boot_flag = 0;
1448                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1449                         new_fcf_record);
1450
1451                 /*
1452                  * When there are no FCF connect entries, use driver's default
1453                  * addressing mode - FPMA.
1454                  */
1455                 if (*addr_mode & LPFC_FCF_FPMA)
1456                         *addr_mode = LPFC_FCF_FPMA;
1457
1458                 /* If FCF record report a vlan id use that vlan id */
1459                 if (fcf_vlan_id)
1460                         *vlan_id = fcf_vlan_id;
1461                 else
1462                         *vlan_id = LPFC_FCOE_NULL_VID;
1463                 return 1;
1464         }
1465
1466         list_for_each_entry(conn_entry,
1467                             &phba->fcf_conn_rec_list, list) {
1468                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1469                         continue;
1470
1471                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1472                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1473                                              new_fcf_record))
1474                         continue;
1475                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1476                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1477                                             new_fcf_record))
1478                         continue;
1479                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1480                         /*
1481                          * If the vlan bit map does not have the bit set for the
1482                          * vlan id to be used, then it is not a match.
1483                          */
1484                         if (!(new_fcf_record->vlan_bitmap
1485                                 [conn_entry->conn_rec.vlan_tag / 8] &
1486                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1487                                 continue;
1488                 }
1489
1490                 /*
1491                  * If connection record does not support any addressing mode,
1492                  * skip the FCF record.
1493                  */
1494                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1495                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1496                         continue;
1497
1498                 /*
1499                  * Check if the connection record specifies a required
1500                  * addressing mode.
1501                  */
1502                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1503                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1504
1505                         /*
1506                          * If SPMA required but FCF not support this continue.
1507                          */
1508                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1509                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1510                                         new_fcf_record) & LPFC_FCF_SPMA))
1511                                 continue;
1512
1513                         /*
1514                          * If FPMA required but FCF not support this continue.
1515                          */
1516                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1517                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1518                                 new_fcf_record) & LPFC_FCF_FPMA))
1519                                 continue;
1520                 }
1521
1522                 /*
1523                  * This fcf record matches filtering criteria.
1524                  */
1525                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1526                         *boot_flag = 1;
1527                 else
1528                         *boot_flag = 0;
1529
1530                 /*
1531                  * If user did not specify any addressing mode, or if the
1532                  * prefered addressing mode specified by user is not supported
1533                  * by FCF, allow fabric to pick the addressing mode.
1534                  */
1535                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1536                                 new_fcf_record);
1537                 /*
1538                  * If the user specified a required address mode, assign that
1539                  * address mode
1540                  */
1541                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1542                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1543                         *addr_mode = (conn_entry->conn_rec.flags &
1544                                 FCFCNCT_AM_SPMA) ?
1545                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1546                 /*
1547                  * If the user specified a prefered address mode, use the
1548                  * addr mode only if FCF support the addr_mode.
1549                  */
1550                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1551                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1552                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1553                         (*addr_mode & LPFC_FCF_SPMA))
1554                                 *addr_mode = LPFC_FCF_SPMA;
1555                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1556                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1557                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1558                         (*addr_mode & LPFC_FCF_FPMA))
1559                                 *addr_mode = LPFC_FCF_FPMA;
1560
1561                 /* If matching connect list has a vlan id, use it */
1562                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1563                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1564                 /*
1565                  * If no vlan id is specified in connect list, use the vlan id
1566                  * in the FCF record
1567                  */
1568                 else if (fcf_vlan_id)
1569                         *vlan_id = fcf_vlan_id;
1570                 else
1571                         *vlan_id = LPFC_FCOE_NULL_VID;
1572
1573                 return 1;
1574         }
1575
1576         return 0;
1577 }
1578
1579 /**
1580  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1581  * @phba: pointer to lpfc hba data structure.
1582  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1583  *
1584  * This function check if there is any fcoe event pending while driver
1585  * scan FCF entries. If there is any pending event, it will restart the
1586  * FCF saning and return 1 else return 0.
1587  */
1588 int
1589 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1590 {
1591         /*
1592          * If the Link is up and no FCoE events while in the
1593          * FCF discovery, no need to restart FCF discovery.
1594          */
1595         if ((phba->link_state  >= LPFC_LINK_UP) &&
1596             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1597                 return 0;
1598
1599         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1600                         "2768 Pending link or FCF event during current "
1601                         "handling of the previous event: link_state:x%x, "
1602                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1603                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1604                         phba->fcoe_eventtag);
1605
1606         spin_lock_irq(&phba->hbalock);
1607         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1608         spin_unlock_irq(&phba->hbalock);
1609
1610         if (phba->link_state >= LPFC_LINK_UP) {
1611                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1612                                 "2780 Restart FCF table scan due to "
1613                                 "pending FCF event:evt_tag_at_scan:x%x, "
1614                                 "evt_tag_current:x%x\n",
1615                                 phba->fcoe_eventtag_at_fcf_scan,
1616                                 phba->fcoe_eventtag);
1617                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1618         } else {
1619                 /*
1620                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1621                  * flag
1622                  */
1623                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1624                                 "2833 Stop FCF discovery process due to link "
1625                                 "state change (x%x)\n", phba->link_state);
1626                 spin_lock_irq(&phba->hbalock);
1627                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1628                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1629                 spin_unlock_irq(&phba->hbalock);
1630         }
1631
1632         /* Unregister the currently registered FCF if required */
1633         if (unreg_fcf) {
1634                 spin_lock_irq(&phba->hbalock);
1635                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1636                 spin_unlock_irq(&phba->hbalock);
1637                 lpfc_sli4_unregister_fcf(phba);
1638         }
1639         return 1;
1640 }
1641
1642 /**
1643  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1644  * @phba: pointer to lpfc hba data structure.
1645  * @fcf_cnt: number of eligible fcf record seen so far.
1646  *
1647  * This function makes an running random selection decision on FCF record to
1648  * use through a sequence of @fcf_cnt eligible FCF records with equal
1649  * probability. To perform integer manunipulation of random numbers with
1650  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1651  * from random32() are taken as the random random number generated.
1652  *
1653  * Returns true when outcome is for the newly read FCF record should be
1654  * chosen; otherwise, return false when outcome is for keeping the previously
1655  * chosen FCF record.
1656  **/
1657 static bool
1658 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1659 {
1660         uint32_t rand_num;
1661
1662         /* Get 16-bit uniform random number */
1663         rand_num = (0xFFFF & random32());
1664
1665         /* Decision with probability 1/fcf_cnt */
1666         if ((fcf_cnt * rand_num) < 0xFFFF)
1667                 return true;
1668         else
1669                 return false;
1670 }
1671
1672 /**
1673  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1674  * @phba: pointer to lpfc hba data structure.
1675  * @mboxq: pointer to mailbox object.
1676  * @next_fcf_index: pointer to holder of next fcf index.
1677  *
1678  * This routine parses the non-embedded fcf mailbox command by performing the
1679  * necessarily error checking, non-embedded read FCF record mailbox command
1680  * SGE parsing, and endianness swapping.
1681  *
1682  * Returns the pointer to the new FCF record in the non-embedded mailbox
1683  * command DMA memory if successfully, other NULL.
1684  */
1685 static struct fcf_record *
1686 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1687                              uint16_t *next_fcf_index)
1688 {
1689         void *virt_addr;
1690         dma_addr_t phys_addr;
1691         struct lpfc_mbx_sge sge;
1692         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1693         uint32_t shdr_status, shdr_add_status;
1694         union lpfc_sli4_cfg_shdr *shdr;
1695         struct fcf_record *new_fcf_record;
1696
1697         /* Get the first SGE entry from the non-embedded DMA memory. This
1698          * routine only uses a single SGE.
1699          */
1700         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1701         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1702         if (unlikely(!mboxq->sge_array)) {
1703                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1704                                 "2524 Failed to get the non-embedded SGE "
1705                                 "virtual address\n");
1706                 return NULL;
1707         }
1708         virt_addr = mboxq->sge_array->addr[0];
1709
1710         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1711         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1712         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1713         if (shdr_status || shdr_add_status) {
1714                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1715                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1716                                         "2726 READ_FCF_RECORD Indicates empty "
1717                                         "FCF table.\n");
1718                 else
1719                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1720                                         "2521 READ_FCF_RECORD mailbox failed "
1721                                         "with status x%x add_status x%x, "
1722                                         "mbx\n", shdr_status, shdr_add_status);
1723                 return NULL;
1724         }
1725
1726         /* Interpreting the returned information of the FCF record */
1727         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1728         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1729                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1730         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1731         new_fcf_record = (struct fcf_record *)(virt_addr +
1732                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1733         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1734                                 offsetof(struct fcf_record, vlan_bitmap));
1735         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1736         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1737
1738         return new_fcf_record;
1739 }
1740
1741 /**
1742  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1743  * @phba: pointer to lpfc hba data structure.
1744  * @fcf_record: pointer to the fcf record.
1745  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1746  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1747  *
1748  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1749  * enabled.
1750  **/
1751 static void
1752 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1753                               struct fcf_record *fcf_record,
1754                               uint16_t vlan_id,
1755                               uint16_t next_fcf_index)
1756 {
1757         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1758                         "2764 READ_FCF_RECORD:\n"
1759                         "\tFCF_Index     : x%x\n"
1760                         "\tFCF_Avail     : x%x\n"
1761                         "\tFCF_Valid     : x%x\n"
1762                         "\tFIP_Priority  : x%x\n"
1763                         "\tMAC_Provider  : x%x\n"
1764                         "\tLowest VLANID : x%x\n"
1765                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1766                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1767                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1768                         "\tNext_FCF_Index: x%x\n",
1769                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1770                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1771                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1772                         fcf_record->fip_priority,
1773                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1774                         vlan_id,
1775                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1776                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1777                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1778                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1779                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1780                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1781                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1782                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1783                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1784                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1785                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1786                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1787                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1788                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1789                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1790                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1791                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1792                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1793                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1794                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1795                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1796                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1797                         next_fcf_index);
1798 }
1799
1800 /**
1801  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1802  * @phba: pointer to lpfc hba data structure.
1803  * @fcf_rec: pointer to an existing FCF record.
1804  * @new_fcf_record: pointer to a new FCF record.
1805  * @new_vlan_id: vlan id from the new FCF record.
1806  *
1807  * This function performs matching test of a new FCF record against an existing
1808  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1809  * will not be used as part of the FCF record matching criteria.
1810  *
1811  * Returns true if all the fields matching, otherwise returns false.
1812  */
1813 static bool
1814 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1815                            struct lpfc_fcf_rec *fcf_rec,
1816                            struct fcf_record *new_fcf_record,
1817                            uint16_t new_vlan_id)
1818 {
1819         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1820                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1821                         return false;
1822         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1823                 return false;
1824         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1825                 return false;
1826         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1827                 return false;
1828         return true;
1829 }
1830
1831 /**
1832  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1833  * @vport: Pointer to vport object.
1834  * @fcf_index: index to next fcf.
1835  *
1836  * This function processing the roundrobin fcf failover to next fcf index.
1837  * When this function is invoked, there will be a current fcf registered
1838  * for flogi.
1839  * Return: 0 for continue retrying flogi on currently registered fcf;
1840  *         1 for stop flogi on currently registered fcf;
1841  */
1842 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1843 {
1844         struct lpfc_hba *phba = vport->phba;
1845         int rc;
1846
1847         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1848                 spin_lock_irq(&phba->hbalock);
1849                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1850                         spin_unlock_irq(&phba->hbalock);
1851                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1852                                         "2872 Devloss tmo with no eligible "
1853                                         "FCF, unregister in-use FCF (x%x) "
1854                                         "and rescan FCF table\n",
1855                                         phba->fcf.current_rec.fcf_indx);
1856                         lpfc_unregister_fcf_rescan(phba);
1857                         goto stop_flogi_current_fcf;
1858                 }
1859                 /* Mark the end to FLOGI roundrobin failover */
1860                 phba->hba_flag &= ~FCF_RR_INPROG;
1861                 /* Allow action to new fcf asynchronous event */
1862                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1863                 spin_unlock_irq(&phba->hbalock);
1864                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1865                                 "2865 No FCF available, stop roundrobin FCF "
1866                                 "failover and change port state:x%x/x%x\n",
1867                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1868                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1869                 goto stop_flogi_current_fcf;
1870         } else {
1871                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1872                                 "2794 Try FLOGI roundrobin FCF failover to "
1873                                 "(x%x)\n", fcf_index);
1874                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1875                 if (rc)
1876                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1877                                         "2761 FLOGI roundrobin FCF failover "
1878                                         "failed (rc:x%x) to read FCF (x%x)\n",
1879                                         rc, phba->fcf.current_rec.fcf_indx);
1880                 else
1881                         goto stop_flogi_current_fcf;
1882         }
1883         return 0;
1884
1885 stop_flogi_current_fcf:
1886         lpfc_can_disctmo(vport);
1887         return 1;
1888 }
1889
1890 /**
1891  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
1892  * @phba: pointer to lpfc hba data structure.
1893  * @mboxq: pointer to mailbox object.
1894  *
1895  * This function iterates through all the fcf records available in
1896  * HBA and chooses the optimal FCF record for discovery. After finding
1897  * the FCF for discovery it registers the FCF record and kicks start
1898  * discovery.
1899  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
1900  * use an FCF record which matches fabric name and mac address of the
1901  * currently used FCF record.
1902  * If the driver supports only one FCF, it will try to use the FCF record
1903  * used by BOOT_BIOS.
1904  */
1905 void
1906 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1907 {
1908         struct fcf_record *new_fcf_record;
1909         uint32_t boot_flag, addr_mode;
1910         uint16_t fcf_index, next_fcf_index;
1911         struct lpfc_fcf_rec *fcf_rec = NULL;
1912         uint16_t vlan_id;
1913         uint32_t seed;
1914         bool select_new_fcf;
1915         int rc;
1916
1917         /* If there is pending FCoE event restart FCF table scan */
1918         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
1919                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1920                 return;
1921         }
1922
1923         /* Parse the FCF record from the non-embedded mailbox command */
1924         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1925                                                       &next_fcf_index);
1926         if (!new_fcf_record) {
1927                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1928                                 "2765 Mailbox command READ_FCF_RECORD "
1929                                 "failed to retrieve a FCF record.\n");
1930                 /* Let next new FCF event trigger fast failover */
1931                 spin_lock_irq(&phba->hbalock);
1932                 phba->hba_flag &= ~FCF_TS_INPROG;
1933                 spin_unlock_irq(&phba->hbalock);
1934                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1935                 return;
1936         }
1937
1938         /* Check the FCF record against the connection list */
1939         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1940                                       &addr_mode, &vlan_id);
1941
1942         /* Log the FCF record information if turned on */
1943         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1944                                       next_fcf_index);
1945
1946         /*
1947          * If the fcf record does not match with connect list entries
1948          * read the next entry; otherwise, this is an eligible FCF
1949          * record for roundrobin FCF failover.
1950          */
1951         if (!rc) {
1952                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1953                                 "2781 FCF (x%x) failed connection "
1954                                 "list check: (x%x/x%x)\n",
1955                                 bf_get(lpfc_fcf_record_fcf_index,
1956                                        new_fcf_record),
1957                                 bf_get(lpfc_fcf_record_fcf_avail,
1958                                        new_fcf_record),
1959                                 bf_get(lpfc_fcf_record_fcf_valid,
1960                                        new_fcf_record));
1961                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
1962                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1963                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
1964                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
1965                             phba->fcf.current_rec.fcf_indx) {
1966                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1967                                         "2862 FCF (x%x) matches property "
1968                                         "of in-use FCF (x%x)\n",
1969                                         bf_get(lpfc_fcf_record_fcf_index,
1970                                                new_fcf_record),
1971                                         phba->fcf.current_rec.fcf_indx);
1972                                 goto read_next_fcf;
1973                         }
1974                         /*
1975                          * In case the current in-use FCF record becomes
1976                          * invalid/unavailable during FCF discovery that
1977                          * was not triggered by fast FCF failover process,
1978                          * treat it as fast FCF failover.
1979                          */
1980                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
1981                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1982                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1983                                                 "2835 Invalid in-use FCF "
1984                                                 "(x%x), enter FCF failover "
1985                                                 "table scan.\n",
1986                                                 phba->fcf.current_rec.fcf_indx);
1987                                 spin_lock_irq(&phba->hbalock);
1988                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
1989                                 spin_unlock_irq(&phba->hbalock);
1990                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1991                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
1992                                                 LPFC_FCOE_FCF_GET_FIRST);
1993                                 return;
1994                         }
1995                 }
1996                 goto read_next_fcf;
1997         } else {
1998                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1999                 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2000                 if (rc)
2001                         goto read_next_fcf;
2002         }
2003
2004         /*
2005          * If this is not the first FCF discovery of the HBA, use last
2006          * FCF record for the discovery. The condition that a rescan
2007          * matches the in-use FCF record: fabric name, switch name, mac
2008          * address, and vlan_id.
2009          */
2010         spin_lock_irq(&phba->hbalock);
2011         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2012                 if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2013                     new_fcf_record, vlan_id)) {
2014                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2015                             phba->fcf.current_rec.fcf_indx) {
2016                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2017                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2018                                         /* Stop FCF redisc wait timer */
2019                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2020                                                                         phba);
2021                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2022                                         /* Fast failover, mark completed */
2023                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2024                                 spin_unlock_irq(&phba->hbalock);
2025                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2026                                                 "2836 New FCF matches in-use "
2027                                                 "FCF (x%x)\n",
2028                                                 phba->fcf.current_rec.fcf_indx);
2029                                 goto out;
2030                         } else
2031                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2032                                         "2863 New FCF (x%x) matches "
2033                                         "property of in-use FCF (x%x)\n",
2034                                         bf_get(lpfc_fcf_record_fcf_index,
2035                                                new_fcf_record),
2036                                         phba->fcf.current_rec.fcf_indx);
2037                 }
2038                 /*
2039                  * Read next FCF record from HBA searching for the matching
2040                  * with in-use record only if not during the fast failover
2041                  * period. In case of fast failover period, it shall try to
2042                  * determine whether the FCF record just read should be the
2043                  * next candidate.
2044                  */
2045                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2046                         spin_unlock_irq(&phba->hbalock);
2047                         goto read_next_fcf;
2048                 }
2049         }
2050         /*
2051          * Update on failover FCF record only if it's in FCF fast-failover
2052          * period; otherwise, update on current FCF record.
2053          */
2054         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2055                 fcf_rec = &phba->fcf.failover_rec;
2056         else
2057                 fcf_rec = &phba->fcf.current_rec;
2058
2059         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2060                 /*
2061                  * If the driver FCF record does not have boot flag
2062                  * set and new hba fcf record has boot flag set, use
2063                  * the new hba fcf record.
2064                  */
2065                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2066                         /* Choose this FCF record */
2067                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2068                                         "2837 Update current FCF record "
2069                                         "(x%x) with new FCF record (x%x)\n",
2070                                         fcf_rec->fcf_indx,
2071                                         bf_get(lpfc_fcf_record_fcf_index,
2072                                         new_fcf_record));
2073                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2074                                         addr_mode, vlan_id, BOOT_ENABLE);
2075                         spin_unlock_irq(&phba->hbalock);
2076                         goto read_next_fcf;
2077                 }
2078                 /*
2079                  * If the driver FCF record has boot flag set and the
2080                  * new hba FCF record does not have boot flag, read
2081                  * the next FCF record.
2082                  */
2083                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2084                         spin_unlock_irq(&phba->hbalock);
2085                         goto read_next_fcf;
2086                 }
2087                 /*
2088                  * If the new hba FCF record has lower priority value
2089                  * than the driver FCF record, use the new record.
2090                  */
2091                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2092                         /* Choose the new FCF record with lower priority */
2093                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2094                                         "2838 Update current FCF record "
2095                                         "(x%x) with new FCF record (x%x)\n",
2096                                         fcf_rec->fcf_indx,
2097                                         bf_get(lpfc_fcf_record_fcf_index,
2098                                                new_fcf_record));
2099                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2100                                         addr_mode, vlan_id, 0);
2101                         /* Reset running random FCF selection count */
2102                         phba->fcf.eligible_fcf_cnt = 1;
2103                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2104                         /* Update running random FCF selection count */
2105                         phba->fcf.eligible_fcf_cnt++;
2106                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2107                                                 phba->fcf.eligible_fcf_cnt);
2108                         if (select_new_fcf) {
2109                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2110                                         "2839 Update current FCF record "
2111                                         "(x%x) with new FCF record (x%x)\n",
2112                                         fcf_rec->fcf_indx,
2113                                         bf_get(lpfc_fcf_record_fcf_index,
2114                                                new_fcf_record));
2115                                 /* Choose the new FCF by random selection */
2116                                 __lpfc_update_fcf_record(phba, fcf_rec,
2117                                                          new_fcf_record,
2118                                                          addr_mode, vlan_id, 0);
2119                         }
2120                 }
2121                 spin_unlock_irq(&phba->hbalock);
2122                 goto read_next_fcf;
2123         }
2124         /*
2125          * This is the first suitable FCF record, choose this record for
2126          * initial best-fit FCF.
2127          */
2128         if (fcf_rec) {
2129                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2130                                 "2840 Update initial FCF candidate "
2131                                 "with FCF (x%x)\n",
2132                                 bf_get(lpfc_fcf_record_fcf_index,
2133                                        new_fcf_record));
2134                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2135                                          addr_mode, vlan_id, (boot_flag ?
2136                                          BOOT_ENABLE : 0));
2137                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2138                 /* Setup initial running random FCF selection count */
2139                 phba->fcf.eligible_fcf_cnt = 1;
2140                 /* Seeding the random number generator for random selection */
2141                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
2142                 srandom32(seed);
2143         }
2144         spin_unlock_irq(&phba->hbalock);
2145         goto read_next_fcf;
2146
2147 read_next_fcf:
2148         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2149         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2150                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2151                         /*
2152                          * Case of FCF fast failover scan
2153                          */
2154
2155                         /*
2156                          * It has not found any suitable FCF record, cancel
2157                          * FCF scan inprogress, and do nothing
2158                          */
2159                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2160                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2161                                                "2782 No suitable FCF found: "
2162                                                "(x%x/x%x)\n",
2163                                                phba->fcoe_eventtag_at_fcf_scan,
2164                                                bf_get(lpfc_fcf_record_fcf_index,
2165                                                       new_fcf_record));
2166                                 spin_lock_irq(&phba->hbalock);
2167                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2168                                         phba->hba_flag &= ~FCF_TS_INPROG;
2169                                         spin_unlock_irq(&phba->hbalock);
2170                                         /* Unregister in-use FCF and rescan */
2171                                         lpfc_printf_log(phba, KERN_INFO,
2172                                                         LOG_FIP,
2173                                                         "2864 On devloss tmo "
2174                                                         "unreg in-use FCF and "
2175                                                         "rescan FCF table\n");
2176                                         lpfc_unregister_fcf_rescan(phba);
2177                                         return;
2178                                 }
2179                                 /*
2180                                  * Let next new FCF event trigger fast failover
2181                                  */
2182                                 phba->hba_flag &= ~FCF_TS_INPROG;
2183                                 spin_unlock_irq(&phba->hbalock);
2184                                 return;
2185                         }
2186                         /*
2187                          * It has found a suitable FCF record that is not
2188                          * the same as in-use FCF record, unregister the
2189                          * in-use FCF record, replace the in-use FCF record
2190                          * with the new FCF record, mark FCF fast failover
2191                          * completed, and then start register the new FCF
2192                          * record.
2193                          */
2194
2195                         /* Unregister the current in-use FCF record */
2196                         lpfc_unregister_fcf(phba);
2197
2198                         /* Replace in-use record with the new record */
2199                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2200                                         "2842 Replace in-use FCF (x%x) "
2201                                         "with failover FCF (x%x)\n",
2202                                         phba->fcf.current_rec.fcf_indx,
2203                                         phba->fcf.failover_rec.fcf_indx);
2204                         memcpy(&phba->fcf.current_rec,
2205                                &phba->fcf.failover_rec,
2206                                sizeof(struct lpfc_fcf_rec));
2207                         /*
2208                          * Mark the fast FCF failover rediscovery completed
2209                          * and the start of the first round of the roundrobin
2210                          * FCF failover.
2211                          */
2212                         spin_lock_irq(&phba->hbalock);
2213                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2214                         spin_unlock_irq(&phba->hbalock);
2215                         /* Register to the new FCF record */
2216                         lpfc_register_fcf(phba);
2217                 } else {
2218                         /*
2219                          * In case of transaction period to fast FCF failover,
2220                          * do nothing when search to the end of the FCF table.
2221                          */
2222                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2223                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2224                                 return;
2225
2226                         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2227                                 /*
2228                                  * In case the current in-use FCF record no
2229                                  * longer existed during FCF discovery that
2230                                  * was not triggered by fast FCF failover
2231                                  * process, treat it as fast FCF failover.
2232                                  */
2233                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2234                                                 "2841 In-use FCF record (x%x) "
2235                                                 "not reported, entering fast "
2236                                                 "FCF failover mode scanning.\n",
2237                                                 phba->fcf.current_rec.fcf_indx);
2238                                 spin_lock_irq(&phba->hbalock);
2239                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2240                                 spin_unlock_irq(&phba->hbalock);
2241                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2242                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2243                                                 LPFC_FCOE_FCF_GET_FIRST);
2244                                 return;
2245                         }
2246                         /* Register to the new FCF record */
2247                         lpfc_register_fcf(phba);
2248                 }
2249         } else
2250                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2251         return;
2252
2253 out:
2254         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2255         lpfc_register_fcf(phba);
2256
2257         return;
2258 }
2259
2260 /**
2261  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2262  * @phba: pointer to lpfc hba data structure.
2263  * @mboxq: pointer to mailbox object.
2264  *
2265  * This is the callback function for FLOGI failure roundrobin FCF failover
2266  * read FCF record mailbox command from the eligible FCF record bmask for
2267  * performing the failover. If the FCF read back is not valid/available, it
2268  * fails through to retrying FLOGI to the currently registered FCF again.
2269  * Otherwise, if the FCF read back is valid and available, it will set the
2270  * newly read FCF record to the failover FCF record, unregister currently
2271  * registered FCF record, copy the failover FCF record to the current
2272  * FCF record, and then register the current FCF record before proceeding
2273  * to trying FLOGI on the new failover FCF.
2274  */
2275 void
2276 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2277 {
2278         struct fcf_record *new_fcf_record;
2279         uint32_t boot_flag, addr_mode;
2280         uint16_t next_fcf_index, fcf_index;
2281         uint16_t current_fcf_index;
2282         uint16_t vlan_id;
2283         int rc;
2284
2285         /* If link state is not up, stop the roundrobin failover process */
2286         if (phba->link_state < LPFC_LINK_UP) {
2287                 spin_lock_irq(&phba->hbalock);
2288                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2289                 phba->hba_flag &= ~FCF_RR_INPROG;
2290                 spin_unlock_irq(&phba->hbalock);
2291                 goto out;
2292         }
2293
2294         /* Parse the FCF record from the non-embedded mailbox command */
2295         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2296                                                       &next_fcf_index);
2297         if (!new_fcf_record) {
2298                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2299                                 "2766 Mailbox command READ_FCF_RECORD "
2300                                 "failed to retrieve a FCF record.\n");
2301                 goto error_out;
2302         }
2303
2304         /* Get the needed parameters from FCF record */
2305         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2306                                       &addr_mode, &vlan_id);
2307
2308         /* Log the FCF record information if turned on */
2309         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2310                                       next_fcf_index);
2311
2312         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2313         if (!rc) {
2314                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2315                                 "2848 Remove ineligible FCF (x%x) from "
2316                                 "from roundrobin bmask\n", fcf_index);
2317                 /* Clear roundrobin bmask bit for ineligible FCF */
2318                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2319                 /* Perform next round of roundrobin FCF failover */
2320                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2321                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2322                 if (rc)
2323                         goto out;
2324                 goto error_out;
2325         }
2326
2327         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2328                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2329                                 "2760 Perform FLOGI roundrobin FCF failover: "
2330                                 "FCF (x%x) back to FCF (x%x)\n",
2331                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2332                 /* Wait 500 ms before retrying FLOGI to current FCF */
2333                 msleep(500);
2334                 lpfc_initial_flogi(phba->pport);
2335                 goto out;
2336         }
2337
2338         /* Upload new FCF record to the failover FCF record */
2339         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2340                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2341                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2342         spin_lock_irq(&phba->hbalock);
2343         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2344                                  new_fcf_record, addr_mode, vlan_id,
2345                                  (boot_flag ? BOOT_ENABLE : 0));
2346         spin_unlock_irq(&phba->hbalock);
2347
2348         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2349
2350         /* Unregister the current in-use FCF record */
2351         lpfc_unregister_fcf(phba);
2352
2353         /* Replace in-use record with the new record */
2354         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2355                sizeof(struct lpfc_fcf_rec));
2356
2357         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2358                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2359                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2360
2361 error_out:
2362         lpfc_register_fcf(phba);
2363 out:
2364         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2365 }
2366
2367 /**
2368  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2369  * @phba: pointer to lpfc hba data structure.
2370  * @mboxq: pointer to mailbox object.
2371  *
2372  * This is the callback function of read FCF record mailbox command for
2373  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2374  * failover when a new FCF event happened. If the FCF read back is
2375  * valid/available and it passes the connection list check, it updates
2376  * the bmask for the eligible FCF record for roundrobin failover.
2377  */
2378 void
2379 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2380 {
2381         struct fcf_record *new_fcf_record;
2382         uint32_t boot_flag, addr_mode;
2383         uint16_t fcf_index, next_fcf_index;
2384         uint16_t vlan_id;
2385         int rc;
2386
2387         /* If link state is not up, no need to proceed */
2388         if (phba->link_state < LPFC_LINK_UP)
2389                 goto out;
2390
2391         /* If FCF discovery period is over, no need to proceed */
2392         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2393                 goto out;
2394
2395         /* Parse the FCF record from the non-embedded mailbox command */
2396         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2397                                                       &next_fcf_index);
2398         if (!new_fcf_record) {
2399                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2400                                 "2767 Mailbox command READ_FCF_RECORD "
2401                                 "failed to retrieve a FCF record.\n");
2402                 goto out;
2403         }
2404
2405         /* Check the connection list for eligibility */
2406         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2407                                       &addr_mode, &vlan_id);
2408
2409         /* Log the FCF record information if turned on */
2410         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2411                                       next_fcf_index);
2412
2413         if (!rc)
2414                 goto out;
2415
2416         /* Update the eligible FCF record index bmask */
2417         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2418         rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2419
2420 out:
2421         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2422 }
2423
2424 /**
2425  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2426  * @phba: pointer to lpfc hba data structure.
2427  * @mboxq: pointer to mailbox data structure.
2428  *
2429  * This function handles completion of init vpi mailbox command.
2430  */
2431 void
2432 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2433 {
2434         struct lpfc_vport *vport = mboxq->vport;
2435         struct lpfc_nodelist *ndlp;
2436         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2437
2438         if (mboxq->u.mb.mbxStatus) {
2439                 lpfc_printf_vlog(vport, KERN_ERR,
2440                                 LOG_MBOX,
2441                                 "2609 Init VPI mailbox failed 0x%x\n",
2442                                 mboxq->u.mb.mbxStatus);
2443                 mempool_free(mboxq, phba->mbox_mem_pool);
2444                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2445                 return;
2446         }
2447         spin_lock_irq(shost->host_lock);
2448         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2449         spin_unlock_irq(shost->host_lock);
2450
2451         /* If this port is physical port or FDISC is done, do reg_vpi */
2452         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2453                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2454                         if (!ndlp)
2455                                 lpfc_printf_vlog(vport, KERN_ERR,
2456                                         LOG_DISCOVERY,
2457                                         "2731 Cannot find fabric "
2458                                         "controller node\n");
2459                         else
2460                                 lpfc_register_new_vport(phba, vport, ndlp);
2461                         mempool_free(mboxq, phba->mbox_mem_pool);
2462                         return;
2463         }
2464
2465         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2466                 lpfc_initial_fdisc(vport);
2467         else {
2468                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2469                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2470                                  "2606 No NPIV Fabric support\n");
2471         }
2472         mempool_free(mboxq, phba->mbox_mem_pool);
2473         return;
2474 }
2475
2476 /**
2477  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2478  * @vport: pointer to lpfc_vport data structure.
2479  *
2480  * This function issue a init_vpi mailbox command to initialize
2481  * VPI for the vport.
2482  */
2483 void
2484 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2485 {
2486         LPFC_MBOXQ_t *mboxq;
2487         int rc;
2488
2489         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2490         if (!mboxq) {
2491                 lpfc_printf_vlog(vport, KERN_ERR,
2492                         LOG_MBOX, "2607 Failed to allocate "
2493                         "init_vpi mailbox\n");
2494                 return;
2495         }
2496         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2497         mboxq->vport = vport;
2498         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2499         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2500         if (rc == MBX_NOT_FINISHED) {
2501                 lpfc_printf_vlog(vport, KERN_ERR,
2502                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2503                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2504         }
2505 }
2506
2507 /**
2508  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2509  * @phba: pointer to lpfc hba data structure.
2510  *
2511  * This function loops through the list of vports on the @phba and issues an
2512  * FDISC if possible.
2513  */
2514 void
2515 lpfc_start_fdiscs(struct lpfc_hba *phba)
2516 {
2517         struct lpfc_vport **vports;
2518         int i;
2519
2520         vports = lpfc_create_vport_work_array(phba);
2521         if (vports != NULL) {
2522                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2523                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2524                                 continue;
2525                         /* There are no vpi for this vport */
2526                         if (vports[i]->vpi > phba->max_vpi) {
2527                                 lpfc_vport_set_state(vports[i],
2528                                                      FC_VPORT_FAILED);
2529                                 continue;
2530                         }
2531                         if (phba->fc_topology == TOPOLOGY_LOOP) {
2532                                 lpfc_vport_set_state(vports[i],
2533                                                      FC_VPORT_LINKDOWN);
2534                                 continue;
2535                         }
2536                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2537                                 lpfc_issue_init_vpi(vports[i]);
2538                                 continue;
2539                         }
2540                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2541                                 lpfc_initial_fdisc(vports[i]);
2542                         else {
2543                                 lpfc_vport_set_state(vports[i],
2544                                                      FC_VPORT_NO_FABRIC_SUPP);
2545                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2546                                                  LOG_ELS,
2547                                                  "0259 No NPIV "
2548                                                  "Fabric support\n");
2549                         }
2550                 }
2551         }
2552         lpfc_destroy_vport_work_array(phba, vports);
2553 }
2554
2555 void
2556 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2557 {
2558         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2559         struct lpfc_vport *vport = mboxq->vport;
2560         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2561
2562         if (mboxq->u.mb.mbxStatus) {
2563                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2564                          "2018 REG_VFI mbxStatus error x%x "
2565                          "HBA state x%x\n",
2566                          mboxq->u.mb.mbxStatus, vport->port_state);
2567                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2568                         /* FLOGI failed, use loop map to make discovery list */
2569                         lpfc_disc_list_loopmap(vport);
2570                         /* Start discovery */
2571                         lpfc_disc_start(vport);
2572                         goto fail_free_mem;
2573                 }
2574                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2575                 goto fail_free_mem;
2576         }
2577         /* The VPI is implicitly registered when the VFI is registered */
2578         spin_lock_irq(shost->host_lock);
2579         vport->vpi_state |= LPFC_VPI_REGISTERED;
2580         vport->fc_flag |= FC_VFI_REGISTERED;
2581         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2582         spin_unlock_irq(shost->host_lock);
2583
2584         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2585                 lpfc_start_fdiscs(phba);
2586                 lpfc_do_scr_ns_plogi(phba, vport);
2587         }
2588
2589 fail_free_mem:
2590         mempool_free(mboxq, phba->mbox_mem_pool);
2591         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2592         kfree(dmabuf);
2593         return;
2594 }
2595
2596 static void
2597 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2598 {
2599         MAILBOX_t *mb = &pmb->u.mb;
2600         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2601         struct lpfc_vport  *vport = pmb->vport;
2602
2603
2604         /* Check for error */
2605         if (mb->mbxStatus) {
2606                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2607                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2608                                  "0319 READ_SPARAM mbxStatus error x%x "
2609                                  "hba state x%x>\n",
2610                                  mb->mbxStatus, vport->port_state);
2611                 lpfc_linkdown(phba);
2612                 goto out;
2613         }
2614
2615         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2616                sizeof (struct serv_parm));
2617         if (phba->cfg_soft_wwnn)
2618                 u64_to_wwn(phba->cfg_soft_wwnn,
2619                            vport->fc_sparam.nodeName.u.wwn);
2620         if (phba->cfg_soft_wwpn)
2621                 u64_to_wwn(phba->cfg_soft_wwpn,
2622                            vport->fc_sparam.portName.u.wwn);
2623         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
2624                sizeof(vport->fc_nodename));
2625         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
2626                sizeof(vport->fc_portname));
2627         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2628                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2629                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2630         }
2631
2632         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2633         kfree(mp);
2634         mempool_free(pmb, phba->mbox_mem_pool);
2635         return;
2636
2637 out:
2638         pmb->context1 = NULL;
2639         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2640         kfree(mp);
2641         lpfc_issue_clear_la(phba, vport);
2642         mempool_free(pmb, phba->mbox_mem_pool);
2643         return;
2644 }
2645
2646 static void
2647 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
2648 {
2649         struct lpfc_vport *vport = phba->pport;
2650         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2651         int i;
2652         struct lpfc_dmabuf *mp;
2653         int rc;
2654         struct fcf_record *fcf_record;
2655
2656         spin_lock_irq(&phba->hbalock);
2657         switch (la->UlnkSpeed) {
2658         case LA_1GHZ_LINK:
2659                 phba->fc_linkspeed = LA_1GHZ_LINK;
2660                 break;
2661         case LA_2GHZ_LINK:
2662                 phba->fc_linkspeed = LA_2GHZ_LINK;
2663                 break;
2664         case LA_4GHZ_LINK:
2665                 phba->fc_linkspeed = LA_4GHZ_LINK;
2666                 break;
2667         case LA_8GHZ_LINK:
2668                 phba->fc_linkspeed = LA_8GHZ_LINK;
2669                 break;
2670         case LA_10GHZ_LINK:
2671                 phba->fc_linkspeed = LA_10GHZ_LINK;
2672                 break;
2673         default:
2674                 phba->fc_linkspeed = LA_UNKNW_LINK;
2675                 break;
2676         }
2677
2678         phba->fc_topology = la->topology;
2679         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2680
2681         if (phba->fc_topology == TOPOLOGY_LOOP) {
2682                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2683
2684                 /* if npiv is enabled and this adapter supports npiv log
2685                  * a message that npiv is not supported in this topology
2686                  */
2687                 if (phba->cfg_enable_npiv && phba->max_vpi)
2688                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2689                                 "1309 Link Up Event npiv not supported in loop "
2690                                 "topology\n");
2691                                 /* Get Loop Map information */
2692                 if (la->il)
2693                         vport->fc_flag |= FC_LBIT;
2694
2695                 vport->fc_myDID = la->granted_AL_PA;
2696                 i = la->un.lilpBde64.tus.f.bdeSize;
2697
2698                 if (i == 0) {
2699                         phba->alpa_map[0] = 0;
2700                 } else {
2701                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2702                                 int numalpa, j, k;
2703                                 union {
2704                                         uint8_t pamap[16];
2705                                         struct {
2706                                                 uint32_t wd1;
2707                                                 uint32_t wd2;
2708                                                 uint32_t wd3;
2709                                                 uint32_t wd4;
2710                                         } pa;
2711                                 } un;
2712                                 numalpa = phba->alpa_map[0];
2713                                 j = 0;
2714                                 while (j < numalpa) {
2715                                         memset(un.pamap, 0, 16);
2716                                         for (k = 1; j < numalpa; k++) {
2717                                                 un.pamap[k - 1] =
2718                                                         phba->alpa_map[j + 1];
2719                                                 j++;
2720                                                 if (k == 16)
2721                                                         break;
2722                                         }
2723                                         /* Link Up Event ALPA map */
2724                                         lpfc_printf_log(phba,
2725                                                         KERN_WARNING,
2726                                                         LOG_LINK_EVENT,
2727                                                         "1304 Link Up Event "
2728                                                         "ALPA map Data: x%x "
2729                                                         "x%x x%x x%x\n",
2730                                                         un.pa.wd1, un.pa.wd2,
2731                                                         un.pa.wd3, un.pa.wd4);
2732                                 }
2733                         }
2734                 }
2735         } else {
2736                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2737                         if (phba->max_vpi && phba->cfg_enable_npiv &&
2738                            (phba->sli_rev == 3))
2739                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2740                 }
2741                 vport->fc_myDID = phba->fc_pref_DID;
2742                 vport->fc_flag |= FC_LBIT;
2743         }
2744         spin_unlock_irq(&phba->hbalock);
2745
2746         lpfc_linkup(phba);
2747         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2748         if (!sparam_mbox)
2749                 goto out;
2750
2751         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
2752         if (rc) {
2753                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2754                 goto out;
2755         }
2756         sparam_mbox->vport = vport;
2757         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2758         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2759         if (rc == MBX_NOT_FINISHED) {
2760                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2761                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2762                 kfree(mp);
2763                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2764                 goto out;
2765         }
2766
2767         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
2768                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2769                 if (!cfglink_mbox)
2770                         goto out;
2771                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2772                 lpfc_config_link(phba, cfglink_mbox);
2773                 cfglink_mbox->vport = vport;
2774                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2775                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2776                 if (rc == MBX_NOT_FINISHED) {
2777                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2778                         goto out;
2779                 }
2780         } else {
2781                 vport->port_state = LPFC_VPORT_UNKNOWN;
2782                 /*
2783                  * Add the driver's default FCF record at FCF index 0 now. This
2784                  * is phase 1 implementation that support FCF index 0 and driver
2785                  * defaults.
2786                  */
2787                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2788                         fcf_record = kzalloc(sizeof(struct fcf_record),
2789                                         GFP_KERNEL);
2790                         if (unlikely(!fcf_record)) {
2791                                 lpfc_printf_log(phba, KERN_ERR,
2792                                         LOG_MBOX | LOG_SLI,
2793                                         "2554 Could not allocate memmory for "
2794                                         "fcf record\n");
2795                                 rc = -ENODEV;
2796                                 goto out;
2797                         }
2798
2799                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2800                                                 LPFC_FCOE_FCF_DEF_INDEX);
2801                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2802                         if (unlikely(rc)) {
2803                                 lpfc_printf_log(phba, KERN_ERR,
2804                                         LOG_MBOX | LOG_SLI,
2805                                         "2013 Could not manually add FCF "
2806                                         "record 0, status %d\n", rc);
2807                                 rc = -ENODEV;
2808                                 kfree(fcf_record);
2809                                 goto out;
2810                         }
2811                         kfree(fcf_record);
2812                 }
2813                 /*
2814                  * The driver is expected to do FIP/FCF. Call the port
2815                  * and get the FCF Table.
2816                  */
2817                 spin_lock_irq(&phba->hbalock);
2818                 if (phba->hba_flag & FCF_TS_INPROG) {
2819                         spin_unlock_irq(&phba->hbalock);
2820                         return;
2821                 }
2822                 /* This is the initial FCF discovery scan */
2823                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
2824                 spin_unlock_irq(&phba->hbalock);
2825                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2826                                 "2778 Start FCF table scan at linkup\n");
2827                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2828                                                      LPFC_FCOE_FCF_GET_FIRST);
2829                 if (rc) {
2830                         spin_lock_irq(&phba->hbalock);
2831                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
2832                         spin_unlock_irq(&phba->hbalock);
2833                         goto out;
2834                 }
2835                 /* Reset FCF roundrobin bmask for new discovery */
2836                 memset(phba->fcf.fcf_rr_bmask, 0,
2837                        sizeof(*phba->fcf.fcf_rr_bmask));
2838         }
2839
2840         return;
2841 out:
2842         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2843         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2844                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2845                          vport->port_state, sparam_mbox, cfglink_mbox);
2846         lpfc_issue_clear_la(phba, vport);
2847         return;
2848 }
2849
2850 static void
2851 lpfc_enable_la(struct lpfc_hba *phba)
2852 {
2853         uint32_t control;
2854         struct lpfc_sli *psli = &phba->sli;
2855         spin_lock_irq(&phba->hbalock);
2856         psli->sli_flag |= LPFC_PROCESS_LA;
2857         if (phba->sli_rev <= LPFC_SLI_REV3) {
2858                 control = readl(phba->HCregaddr);
2859                 control |= HC_LAINT_ENA;
2860                 writel(control, phba->HCregaddr);
2861                 readl(phba->HCregaddr); /* flush */
2862         }
2863         spin_unlock_irq(&phba->hbalock);
2864 }
2865
2866 static void
2867 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2868 {
2869         lpfc_linkdown(phba);
2870         lpfc_enable_la(phba);
2871         lpfc_unregister_unused_fcf(phba);
2872         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2873 }
2874
2875
2876 /*
2877  * This routine handles processing a READ_LA mailbox
2878  * command upon completion. It is setup in the LPFC_MBOXQ
2879  * as the completion routine when the command is
2880  * handed off to the SLI layer.
2881  */
2882 void
2883 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2884 {
2885         struct lpfc_vport *vport = pmb->vport;
2886         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2887         READ_LA_VAR *la;
2888         MAILBOX_t *mb = &pmb->u.mb;
2889         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2890
2891         /* Unblock ELS traffic */
2892         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2893         /* Check for error */
2894         if (mb->mbxStatus) {
2895                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2896                                 "1307 READ_LA mbox error x%x state x%x\n",
2897                                 mb->mbxStatus, vport->port_state);
2898                 lpfc_mbx_issue_link_down(phba);
2899                 phba->link_state = LPFC_HBA_ERROR;
2900                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2901         }
2902
2903         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2904
2905         memcpy(&phba->alpa_map[0], mp->virt, 128);
2906
2907         spin_lock_irq(shost->host_lock);
2908         if (la->pb)
2909                 vport->fc_flag |= FC_BYPASSED_MODE;
2910         else
2911                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2912         spin_unlock_irq(shost->host_lock);
2913
2914         if ((phba->fc_eventTag  < la->eventTag) ||
2915             (phba->fc_eventTag == la->eventTag)) {
2916                 phba->fc_stat.LinkMultiEvent++;
2917                 if (la->attType == AT_LINK_UP)
2918                         if (phba->fc_eventTag != 0)
2919                                 lpfc_linkdown(phba);
2920         }
2921
2922         phba->fc_eventTag = la->eventTag;
2923         spin_lock_irq(&phba->hbalock);
2924         if (la->mm)
2925                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2926         else
2927                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2928         spin_unlock_irq(&phba->hbalock);
2929
2930         phba->link_events++;
2931         if (la->attType == AT_LINK_UP && (!la->mm)) {
2932                 phba->fc_stat.LinkUp++;
2933                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2934                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2935                                         "1306 Link Up Event in loop back mode "
2936                                         "x%x received Data: x%x x%x x%x x%x\n",
2937                                         la->eventTag, phba->fc_eventTag,
2938                                         la->granted_AL_PA, la->UlnkSpeed,
2939                                         phba->alpa_map[0]);
2940                 } else {
2941                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2942                                         "1303 Link Up Event x%x received "
2943                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2944                                         la->eventTag, phba->fc_eventTag,
2945                                         la->granted_AL_PA, la->UlnkSpeed,
2946                                         phba->alpa_map[0],
2947                                         la->mm, la->fa,
2948                                         phba->wait_4_mlo_maint_flg);
2949                 }
2950                 lpfc_mbx_process_link_up(phba, la);
2951         } else if (la->attType == AT_LINK_DOWN) {
2952                 phba->fc_stat.LinkDown++;
2953                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2954                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2955                                 "1308 Link Down Event in loop back mode "
2956                                 "x%x received "
2957                                 "Data: x%x x%x x%x\n",
2958                                 la->eventTag, phba->fc_eventTag,
2959                                 phba->pport->port_state, vport->fc_flag);
2960                 }
2961                 else {
2962                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2963                                 "1305 Link Down Event x%x received "
2964                                 "Data: x%x x%x x%x x%x x%x\n",
2965                                 la->eventTag, phba->fc_eventTag,
2966                                 phba->pport->port_state, vport->fc_flag,
2967                                 la->mm, la->fa);
2968                 }
2969                 lpfc_mbx_issue_link_down(phba);
2970         }
2971         if (la->mm && la->attType == AT_LINK_UP) {
2972                 if (phba->link_state != LPFC_LINK_DOWN) {
2973                         phba->fc_stat.LinkDown++;
2974                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2975                                 "1312 Link Down Event x%x received "
2976                                 "Data: x%x x%x x%x\n",
2977                                 la->eventTag, phba->fc_eventTag,
2978                                 phba->pport->port_state, vport->fc_flag);
2979                         lpfc_mbx_issue_link_down(phba);
2980                 } else
2981                         lpfc_enable_la(phba);
2982
2983                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2984                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2985                                 "Data: x%x x%x x%x\n",
2986                                 la->eventTag, phba->fc_eventTag,
2987                                 phba->pport->port_state, vport->fc_flag);
2988                 /*
2989                  * The cmnd that triggered this will be waiting for this
2990                  * signal.
2991                  */
2992                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2993                 if (phba->wait_4_mlo_maint_flg) {
2994                         phba->wait_4_mlo_maint_flg = 0;
2995                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2996                 }
2997         }
2998
2999         if (la->fa) {
3000                 if (la->mm)
3001                         lpfc_issue_clear_la(phba, vport);
3002                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3003                                 "1311 fa %d\n", la->fa);
3004         }
3005
3006 lpfc_mbx_cmpl_read_la_free_mbuf:
3007         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3008         kfree(mp);
3009         mempool_free(pmb, phba->mbox_mem_pool);
3010         return;
3011 }
3012
3013 /*
3014  * This routine handles processing a REG_LOGIN mailbox
3015  * command upon completion. It is setup in the LPFC_MBOXQ
3016  * as the completion routine when the command is
3017  * handed off to the SLI layer.
3018  */
3019 void
3020 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3021 {
3022         struct lpfc_vport  *vport = pmb->vport;
3023         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3024         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3025         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3026
3027         pmb->context1 = NULL;
3028         pmb->context2 = NULL;
3029
3030         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3031                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3032
3033         if (ndlp->nlp_flag &  NLP_IGNR_REG_CMPL ||
3034                 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3035                 /* We rcvd a rscn after issuing this
3036                  * mbox reg login, we may have cycled
3037                  * back through the state and be
3038                  * back at reg login state so this
3039                  * mbox needs to be ignored becase
3040                  * there is another reg login in
3041                  * proccess.
3042                  */
3043                 spin_lock_irq(shost->host_lock);
3044                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3045                 spin_unlock_irq(shost->host_lock);
3046                 if (phba->sli_rev == LPFC_SLI_REV4)
3047                         lpfc_sli4_free_rpi(phba,
3048                                 pmb->u.mb.un.varRegLogin.rpi);
3049
3050         } else
3051                 /* Good status, call state machine */
3052                 lpfc_disc_state_machine(vport, ndlp, pmb,
3053                                 NLP_EVT_CMPL_REG_LOGIN);
3054
3055         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3056         kfree(mp);
3057         mempool_free(pmb, phba->mbox_mem_pool);
3058         /* decrement the node reference count held for this callback
3059          * function.
3060          */
3061         lpfc_nlp_put(ndlp);
3062
3063         return;
3064 }
3065
3066 static void
3067 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3068 {
3069         MAILBOX_t *mb = &pmb->u.mb;
3070         struct lpfc_vport *vport = pmb->vport;
3071         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3072
3073         switch (mb->mbxStatus) {
3074         case 0x0011:
3075         case 0x0020:
3076                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3077                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3078                                  mb->mbxStatus);
3079                 break;
3080         /* If VPI is busy, reset the HBA */
3081         case 0x9700:
3082                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3083                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3084                         vport->vpi, mb->mbxStatus);
3085                 if (!(phba->pport->load_flag & FC_UNLOADING))
3086                         lpfc_workq_post_event(phba, NULL, NULL,
3087                                 LPFC_EVT_RESET_HBA);
3088         }
3089         spin_lock_irq(shost->host_lock);
3090         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3091         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3092         spin_unlock_irq(shost->host_lock);
3093         vport->unreg_vpi_cmpl = VPORT_OK;
3094         mempool_free(pmb, phba->mbox_mem_pool);
3095         /*
3096          * This shost reference might have been taken at the beginning of
3097          * lpfc_vport_delete()
3098          */
3099         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3100                 scsi_host_put(shost);
3101 }
3102
3103 int
3104 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3105 {
3106         struct lpfc_hba  *phba = vport->phba;
3107         LPFC_MBOXQ_t *mbox;
3108         int rc;
3109
3110         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3111         if (!mbox)
3112                 return 1;
3113
3114         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3115         mbox->vport = vport;
3116         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3117         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3118         if (rc == MBX_NOT_FINISHED) {
3119                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3120                                  "1800 Could not issue unreg_vpi\n");
3121                 mempool_free(mbox, phba->mbox_mem_pool);
3122                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3123                 return rc;
3124         }
3125         return 0;
3126 }
3127
3128 static void
3129 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3130 {
3131         struct lpfc_vport *vport = pmb->vport;
3132         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3133         MAILBOX_t *mb = &pmb->u.mb;
3134
3135         switch (mb->mbxStatus) {
3136         case 0x0011:
3137         case 0x9601:
3138         case 0x9602:
3139                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3140                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3141                                  mb->mbxStatus);
3142                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3143                 spin_lock_irq(shost->host_lock);
3144                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3145                 spin_unlock_irq(shost->host_lock);
3146                 vport->fc_myDID = 0;
3147                 goto out;
3148         }
3149
3150         spin_lock_irq(shost->host_lock);
3151         vport->vpi_state |= LPFC_VPI_REGISTERED;
3152         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3153         spin_unlock_irq(shost->host_lock);
3154         vport->num_disc_nodes = 0;
3155         /* go thru NPR list and issue ELS PLOGIs */
3156         if (vport->fc_npr_cnt)
3157                 lpfc_els_disc_plogi(vport);
3158
3159         if (!vport->num_disc_nodes) {
3160                 spin_lock_irq(shost->host_lock);
3161                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3162                 spin_unlock_irq(shost->host_lock);
3163                 lpfc_can_disctmo(vport);
3164         }
3165         vport->port_state = LPFC_VPORT_READY;
3166
3167 out:
3168         mempool_free(pmb, phba->mbox_mem_pool);
3169         return;
3170 }
3171
3172 /**
3173  * lpfc_create_static_vport - Read HBA config region to create static vports.
3174  * @phba: pointer to lpfc hba data structure.
3175  *
3176  * This routine issue a DUMP mailbox command for config region 22 to get
3177  * the list of static vports to be created. The function create vports
3178  * based on the information returned from the HBA.
3179  **/
3180 void
3181 lpfc_create_static_vport(struct lpfc_hba *phba)
3182 {
3183         LPFC_MBOXQ_t *pmb = NULL;
3184         MAILBOX_t *mb;
3185         struct static_vport_info *vport_info;
3186         int rc = 0, i;
3187         struct fc_vport_identifiers vport_id;
3188         struct fc_vport *new_fc_vport;
3189         struct Scsi_Host *shost;
3190         struct lpfc_vport *vport;
3191         uint16_t offset = 0;
3192         uint8_t *vport_buff;
3193         struct lpfc_dmabuf *mp;
3194         uint32_t byte_count = 0;
3195
3196         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3197         if (!pmb) {
3198                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3199                                 "0542 lpfc_create_static_vport failed to"
3200                                 " allocate mailbox memory\n");
3201                 return;
3202         }
3203
3204         mb = &pmb->u.mb;
3205
3206         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3207         if (!vport_info) {
3208                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3209                                 "0543 lpfc_create_static_vport failed to"
3210                                 " allocate vport_info\n");
3211                 mempool_free(pmb, phba->mbox_mem_pool);
3212                 return;
3213         }
3214
3215         vport_buff = (uint8_t *) vport_info;
3216         do {
3217                 if (lpfc_dump_static_vport(phba, pmb, offset))
3218                         goto out;
3219
3220                 pmb->vport = phba->pport;
3221                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
3222
3223                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
3224                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3225                                 "0544 lpfc_create_static_vport failed to"
3226                                 " issue dump mailbox command ret 0x%x "
3227                                 "status 0x%x\n",
3228                                 rc, mb->mbxStatus);
3229                         goto out;
3230                 }
3231
3232                 if (phba->sli_rev == LPFC_SLI_REV4) {
3233                         byte_count = pmb->u.mqe.un.mb_words[5];
3234                         mp = (struct lpfc_dmabuf *) pmb->context2;
3235                         if (byte_count > sizeof(struct static_vport_info) -
3236                                         offset)
3237                                 byte_count = sizeof(struct static_vport_info)
3238                                         - offset;
3239                         memcpy(vport_buff + offset, mp->virt, byte_count);
3240                         offset += byte_count;
3241                 } else {
3242                         if (mb->un.varDmp.word_cnt >
3243                                 sizeof(struct static_vport_info) - offset)
3244                                 mb->un.varDmp.word_cnt =
3245                                         sizeof(struct static_vport_info)
3246                                                 - offset;
3247                         byte_count = mb->un.varDmp.word_cnt;
3248                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3249                                 vport_buff + offset,
3250                                 byte_count);
3251
3252                         offset += byte_count;
3253                 }
3254
3255         } while (byte_count &&
3256                 offset < sizeof(struct static_vport_info));
3257
3258
3259         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3260                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3261                         != VPORT_INFO_REV)) {
3262                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3263                         "0545 lpfc_create_static_vport bad"
3264                         " information header 0x%x 0x%x\n",
3265                         le32_to_cpu(vport_info->signature),
3266                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3267
3268                 goto out;
3269         }
3270
3271         shost = lpfc_shost_from_vport(phba->pport);
3272
3273         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3274                 memset(&vport_id, 0, sizeof(vport_id));
3275                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3276                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3277                 if (!vport_id.port_name || !vport_id.node_name)
3278                         continue;
3279
3280                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3281                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3282                 vport_id.disable = false;
3283                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3284
3285                 if (!new_fc_vport) {
3286                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3287                                 "0546 lpfc_create_static_vport failed to"
3288                                 " create vport\n");
3289                         continue;
3290                 }
3291
3292                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3293                 vport->vport_flag |= STATIC_VPORT;
3294         }
3295
3296 out:
3297         kfree(vport_info);
3298         if (rc != MBX_TIMEOUT) {
3299                 if (pmb->context2) {
3300                         mp = (struct lpfc_dmabuf *) pmb->context2;
3301                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3302                         kfree(mp);
3303                 }
3304                 mempool_free(pmb, phba->mbox_mem_pool);
3305         }
3306
3307         return;
3308 }
3309
3310 /*
3311  * This routine handles processing a Fabric REG_LOGIN mailbox
3312  * command upon completion. It is setup in the LPFC_MBOXQ
3313  * as the completion routine when the command is
3314  * handed off to the SLI layer.
3315  */
3316 void
3317 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3318 {
3319         struct lpfc_vport *vport = pmb->vport;
3320         MAILBOX_t *mb = &pmb->u.mb;
3321         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3322         struct lpfc_nodelist *ndlp;
3323
3324         ndlp = (struct lpfc_nodelist *) pmb->context2;
3325         pmb->context1 = NULL;
3326         pmb->context2 = NULL;
3327
3328         if (mb->mbxStatus) {
3329                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3330                                  "0258 Register Fabric login error: 0x%x\n",
3331                                  mb->mbxStatus);
3332                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3333                 kfree(mp);
3334                 mempool_free(pmb, phba->mbox_mem_pool);
3335
3336                 if (phba->fc_topology == TOPOLOGY_LOOP) {
3337                         /* FLOGI failed, use loop map to make discovery list */
3338                         lpfc_disc_list_loopmap(vport);
3339
3340                         /* Start discovery */
3341                         lpfc_disc_start(vport);
3342                         /* Decrement the reference count to ndlp after the
3343                          * reference to the ndlp are done.
3344                          */
3345                         lpfc_nlp_put(ndlp);
3346                         return;
3347                 }
3348
3349                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3350                 /* Decrement the reference count to ndlp after the reference
3351                  * to the ndlp are done.
3352                  */
3353                 lpfc_nlp_put(ndlp);
3354                 return;
3355         }
3356
3357         ndlp->nlp_rpi = mb->un.varWords[0];
3358         ndlp->nlp_flag |= NLP_RPI_VALID;
3359         ndlp->nlp_type |= NLP_FABRIC;
3360         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3361
3362         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3363                 /* when physical port receive logo donot start
3364                  * vport discovery */
3365                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3366                         lpfc_start_fdiscs(phba);
3367                 else
3368                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3369                 lpfc_do_scr_ns_plogi(phba, vport);
3370         }
3371
3372         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3373         kfree(mp);
3374         mempool_free(pmb, phba->mbox_mem_pool);
3375
3376         /* Drop the reference count from the mbox at the end after
3377          * all the current reference to the ndlp have been done.
3378          */
3379         lpfc_nlp_put(ndlp);
3380         return;
3381 }
3382
3383 /*
3384  * This routine handles processing a NameServer REG_LOGIN mailbox
3385  * command upon completion. It is setup in the LPFC_MBOXQ
3386  * as the completion routine when the command is
3387  * handed off to the SLI layer.
3388  */
3389 void
3390 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3391 {
3392         MAILBOX_t *mb = &pmb->u.mb;
3393         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3394         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3395         struct lpfc_vport *vport = pmb->vport;
3396
3397         pmb->context1 = NULL;
3398         pmb->context2 = NULL;
3399
3400         if (mb->mbxStatus) {
3401 out:
3402                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3403                                  "0260 Register NameServer error: 0x%x\n",
3404                                  mb->mbxStatus);
3405                 /* decrement the node reference count held for this
3406                  * callback function.
3407                  */
3408                 lpfc_nlp_put(ndlp);
3409                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3410                 kfree(mp);
3411                 mempool_free(pmb, phba->mbox_mem_pool);
3412
3413                 /* If no other thread is using the ndlp, free it */
3414                 lpfc_nlp_not_used(ndlp);
3415
3416                 if (phba->fc_topology == TOPOLOGY_LOOP) {
3417                         /*
3418                          * RegLogin failed, use loop map to make discovery
3419                          * list
3420                          */
3421                         lpfc_disc_list_loopmap(vport);
3422
3423                         /* Start discovery */
3424                         lpfc_disc_start(vport);
3425                         return;
3426                 }
3427                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3428                 return;
3429         }
3430
3431         ndlp->nlp_rpi = mb->un.varWords[0];
3432         ndlp->nlp_flag |= NLP_RPI_VALID;
3433         ndlp->nlp_type |= NLP_FABRIC;
3434         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3435
3436         if (vport->port_state < LPFC_VPORT_READY) {
3437                 /* Link up discovery requires Fabric registration. */
3438                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3439                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3440                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3441                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3442                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3443
3444                 /* Issue SCR just before NameServer GID_FT Query */
3445                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3446         }
3447
3448         vport->fc_ns_retry = 0;
3449         /* Good status, issue CT Request to NameServer */
3450         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3451                 /* Cannot issue NameServer Query, so finish up discovery */
3452                 goto out;
3453         }
3454
3455         /* decrement the node reference count held for this
3456          * callback function.
3457          */
3458         lpfc_nlp_put(ndlp);
3459         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3460         kfree(mp);
3461         mempool_free(pmb, phba->mbox_mem_pool);
3462
3463         return;
3464 }
3465
3466 static void
3467 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3468 {
3469         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3470         struct fc_rport  *rport;
3471         struct lpfc_rport_data *rdata;
3472         struct fc_rport_identifiers rport_ids;
3473         struct lpfc_hba  *phba = vport->phba;
3474
3475         /* Remote port has reappeared. Re-register w/ FC transport */
3476         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3477         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3478         rport_ids.port_id = ndlp->nlp_DID;
3479         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3480
3481         /*
3482          * We leave our node pointer in rport->dd_data when we unregister a
3483          * FCP target port.  But fc_remote_port_add zeros the space to which
3484          * rport->dd_data points.  So, if we're reusing a previously
3485          * registered port, drop the reference that we took the last time we
3486          * registered the port.
3487          */
3488         if (ndlp->rport && ndlp->rport->dd_data &&
3489             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3490                 lpfc_nlp_put(ndlp);
3491
3492         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3493                 "rport add:       did:x%x flg:x%x type x%x",
3494                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3495
3496         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3497         if (!rport || !get_device(&rport->dev)) {
3498                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3499                            "Warning: fc_remote_port_add failed\n");
3500                 return;
3501         }
3502
3503         /* initialize static port data */
3504         rport->maxframe_size = ndlp->nlp_maxframe;
3505         rport->supported_classes = ndlp->nlp_class_sup;
3506         rdata = rport->dd_data;
3507         rdata->pnode = lpfc_nlp_get(ndlp);
3508
3509         if (ndlp->nlp_type & NLP_FCP_TARGET)
3510                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3511         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3512                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3513
3514
3515         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3516                 fc_remote_port_rolechg(rport, rport_ids.roles);
3517
3518         if ((rport->scsi_target_id != -1) &&
3519             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3520                 ndlp->nlp_sid = rport->scsi_target_id;
3521         }
3522         return;
3523 }
3524
3525 static void
3526 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3527 {
3528         struct fc_rport *rport = ndlp->rport;
3529
3530         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3531                 "rport delete:    did:x%x flg:x%x type x%x",
3532                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3533
3534         fc_remote_port_delete(rport);
3535
3536         return;
3537 }
3538
3539 static void
3540 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3541 {
3542         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3543
3544         spin_lock_irq(shost->host_lock);
3545         switch (state) {
3546         case NLP_STE_UNUSED_NODE:
3547                 vport->fc_unused_cnt += count;
3548                 break;
3549         case NLP_STE_PLOGI_ISSUE:
3550                 vport->fc_plogi_cnt += count;
3551                 break;
3552         case NLP_STE_ADISC_ISSUE:
3553                 vport->fc_adisc_cnt += count;
3554                 break;
3555         case NLP_STE_REG_LOGIN_ISSUE:
3556                 vport->fc_reglogin_cnt += count;
3557                 break;
3558         case NLP_STE_PRLI_ISSUE:
3559                 vport->fc_prli_cnt += count;
3560                 break;
3561         case NLP_STE_UNMAPPED_NODE:
3562                 vport->fc_unmap_cnt += count;
3563                 break;
3564         case NLP_STE_MAPPED_NODE:
3565                 vport->fc_map_cnt += count;
3566                 break;
3567         case NLP_STE_NPR_NODE:
3568                 vport->fc_npr_cnt += count;
3569                 break;
3570         }
3571         spin_unlock_irq(shost->host_lock);
3572 }
3573
3574 static void
3575 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3576                        int old_state, int new_state)
3577 {
3578         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3579
3580         if (new_state == NLP_STE_UNMAPPED_NODE) {
3581                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3582                 ndlp->nlp_type |= NLP_FC_NODE;
3583         }
3584         if (new_state == NLP_STE_MAPPED_NODE)
3585                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3586         if (new_state == NLP_STE_NPR_NODE)
3587                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3588
3589         /* Transport interface */
3590         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3591                             old_state == NLP_STE_UNMAPPED_NODE)) {
3592                 vport->phba->nport_event_cnt++;
3593                 lpfc_unregister_remote_port(ndlp);
3594         }
3595
3596         if (new_state ==  NLP_STE_MAPPED_NODE ||
3597             new_state == NLP_STE_UNMAPPED_NODE) {
3598                 vport->phba->nport_event_cnt++;
3599                 /*
3600                  * Tell the fc transport about the port, if we haven't
3601                  * already. If we have, and it's a scsi entity, be
3602                  * sure to unblock any attached scsi devices
3603                  */
3604                 lpfc_register_remote_port(vport, ndlp);
3605         }
3606         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
3607                 (vport->stat_data_enabled)) {
3608                 /*
3609                  * A new target is discovered, if there is no buffer for
3610                  * statistical data collection allocate buffer.
3611                  */
3612                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3613                                          sizeof(struct lpfc_scsicmd_bkt),
3614                                          GFP_KERNEL);
3615
3616                 if (!ndlp->lat_data)
3617                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3618                                 "0286 lpfc_nlp_state_cleanup failed to "
3619                                 "allocate statistical data buffer DID "
3620                                 "0x%x\n", ndlp->nlp_DID);
3621         }
3622         /*
3623          * if we added to Mapped list, but the remote port
3624          * registration failed or assigned a target id outside
3625          * our presentable range - move the node to the
3626          * Unmapped List
3627          */
3628         if (new_state == NLP_STE_MAPPED_NODE &&
3629             (!ndlp->rport ||
3630              ndlp->rport->scsi_target_id == -1 ||
3631              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3632                 spin_lock_irq(shost->host_lock);
3633                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3634                 spin_unlock_irq(shost->host_lock);
3635                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3636         }
3637 }
3638
3639 static char *
3640 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3641 {
3642         static char *states[] = {
3643                 [NLP_STE_UNUSED_NODE] = "UNUSED",
3644                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3645                 [NLP_STE_ADISC_ISSUE] = "ADISC",
3646                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3647                 [NLP_STE_PRLI_ISSUE] = "PRLI",
3648                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3649                 [NLP_STE_MAPPED_NODE] = "MAPPED",
3650                 [NLP_STE_NPR_NODE] = "NPR",
3651         };
3652
3653         if (state < NLP_STE_MAX_STATE && states[state])
3654                 strlcpy(buffer, states[state], size);
3655         else
3656                 snprintf(buffer, size, "unknown (%d)", state);
3657         return buffer;
3658 }
3659
3660 void
3661 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3662                    int state)
3663 {
3664         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3665         int  old_state = ndlp->nlp_state;
3666         char name1[16], name2[16];
3667
3668         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3669                          "0904 NPort state transition x%06x, %s -> %s\n",
3670                          ndlp->nlp_DID,
3671                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3672                          lpfc_nlp_state_name(name2, sizeof(name2), state));
3673
3674         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3675                 "node statechg    did:x%x old:%d ste:%d",
3676                 ndlp->nlp_DID, old_state, state);
3677
3678         if (old_state == NLP_STE_NPR_NODE &&
3679             state != NLP_STE_NPR_NODE)
3680                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3681         if (old_state == NLP_STE_UNMAPPED_NODE) {
3682                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3683                 ndlp->nlp_type &= ~NLP_FC_NODE;
3684         }
3685
3686         if (list_empty(&ndlp->nlp_listp)) {
3687                 spin_lock_irq(shost->host_lock);
3688                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3689                 spin_unlock_irq(shost->host_lock);
3690         } else if (old_state)
3691                 lpfc_nlp_counters(vport, old_state, -1);
3692
3693         ndlp->nlp_state = state;
3694         lpfc_nlp_counters(vport, state, 1);
3695         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3696 }
3697
3698 void
3699 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3700 {
3701         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3702
3703         if (list_empty(&ndlp->nlp_listp)) {
3704                 spin_lock_irq(shost->host_lock);
3705                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3706                 spin_unlock_irq(shost->host_lock);
3707         }
3708 }
3709
3710 void
3711 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3712 {
3713         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3714
3715         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3716         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3717                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3718         spin_lock_irq(shost->host_lock);
3719         list_del_init(&ndlp->nlp_listp);
3720         spin_unlock_irq(shost->host_lock);
3721         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3722                                 NLP_STE_UNUSED_NODE);
3723 }
3724
3725 static void
3726 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3727 {
3728         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3729         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3730                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3731         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3732                                 NLP_STE_UNUSED_NODE);
3733 }
3734 /**
3735  * lpfc_initialize_node - Initialize all fields of node object
3736  * @vport: Pointer to Virtual Port object.
3737  * @ndlp: Pointer to FC node object.
3738  * @did: FC_ID of the node.
3739  *
3740  * This function is always called when node object need to be initialized.
3741  * It initializes all the fields of the node object. Although the reference
3742  * to phba from @ndlp can be obtained indirectly through it's reference to
3743  * @vport, a direct reference to phba is taken here by @ndlp. This is due
3744  * to the life-span of the @ndlp might go beyond the existence of @vport as
3745  * the final release of ndlp is determined by its reference count. And, the
3746  * operation on @ndlp needs the reference to phba.
3747  **/
3748 static inline void
3749 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3750         uint32_t did)
3751 {
3752         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3753         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3754         init_timer(&ndlp->nlp_delayfunc);
3755         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3756         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3757         ndlp->nlp_DID = did;
3758         ndlp->vport = vport;
3759         ndlp->phba = vport->phba;
3760         ndlp->nlp_sid = NLP_NO_SID;
3761         kref_init(&ndlp->kref);
3762         NLP_INT_NODE_ACT(ndlp);
3763         atomic_set(&ndlp->cmd_pending, 0);
3764         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3765 }
3766
3767 struct lpfc_nodelist *
3768 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3769                  int state)
3770 {
3771         struct lpfc_hba *phba = vport->phba;
3772         uint32_t did;
3773         unsigned long flags;
3774
3775         if (!ndlp)
3776                 return NULL;
3777
3778         spin_lock_irqsave(&phba->ndlp_lock, flags);
3779         /* The ndlp should not be in memory free mode */
3780         if (NLP_CHK_FREE_REQ(ndlp)) {
3781                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3782                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3783                                 "0277 lpfc_enable_node: ndlp:x%p "
3784                                 "usgmap:x%x refcnt:%d\n",
3785                                 (void *)ndlp, ndlp->nlp_usg_map,
3786                                 atomic_read(&ndlp->kref.refcount));
3787                 return NULL;
3788         }
3789         /* The ndlp should not already be in active mode */
3790         if (NLP_CHK_NODE_ACT(ndlp)) {
3791                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3792                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3793                                 "0278 lpfc_enable_node: ndlp:x%p "
3794                                 "usgmap:x%x refcnt:%d\n",
3795                                 (void *)ndlp, ndlp->nlp_usg_map,
3796                                 atomic_read(&ndlp->kref.refcount));
3797                 return NULL;
3798         }
3799
3800         /* Keep the original DID */
3801         did = ndlp->nlp_DID;
3802
3803         /* re-initialize ndlp except of ndlp linked list pointer */
3804         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3805                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3806         lpfc_initialize_node(vport, ndlp, did);
3807
3808         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3809
3810         if (state != NLP_STE_UNUSED_NODE)
3811                 lpfc_nlp_set_state(vport, ndlp, state);
3812
3813         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3814                 "node enable:       did:x%x",
3815                 ndlp->nlp_DID, 0, 0);
3816         return ndlp;
3817 }
3818
3819 void
3820 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3821 {
3822         /*
3823          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3824          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3825          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3826          * until ALL other outstanding threads have completed. We check
3827          * that the ndlp not already in the UNUSED state before we proceed.
3828          */
3829         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3830                 return;
3831         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3832         lpfc_nlp_put(ndlp);
3833         return;
3834 }
3835
3836 /*
3837  * Start / ReStart rescue timer for Discovery / RSCN handling
3838  */
3839 void
3840 lpfc_set_disctmo(struct lpfc_vport *vport)
3841 {
3842         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3843         struct lpfc_hba  *phba = vport->phba;
3844         uint32_t tmo;
3845
3846         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3847                 /* For FAN, timeout should be greater than edtov */
3848                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3849         } else {
3850                 /* Normal discovery timeout should be > than ELS/CT timeout
3851                  * FC spec states we need 3 * ratov for CT requests
3852                  */
3853                 tmo = ((phba->fc_ratov * 3) + 3);
3854         }
3855
3856
3857         if (!timer_pending(&vport->fc_disctmo)) {
3858                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3859                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3860                         tmo, vport->port_state, vport->fc_flag);
3861         }
3862
3863         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3864         spin_lock_irq(shost->host_lock);
3865         vport->fc_flag |= FC_DISC_TMO;
3866         spin_unlock_irq(shost->host_lock);
3867
3868         /* Start Discovery Timer state <hba_state> */
3869         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3870                          "0247 Start Discovery Timer state x%x "
3871                          "Data: x%x x%lx x%x x%x\n",
3872                          vport->port_state, tmo,
3873                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3874                          vport->fc_adisc_cnt);
3875
3876         return;
3877 }
3878
3879 /*
3880  * Cancel rescue timer for Discovery / RSCN handling
3881  */
3882 int
3883 lpfc_can_disctmo(struct lpfc_vport *vport)
3884 {
3885         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3886         unsigned long iflags;
3887
3888         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3889                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3890                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3891
3892         /* Turn off discovery timer if its running */
3893         if (vport->fc_flag & FC_DISC_TMO) {
3894                 spin_lock_irqsave(shost->host_lock, iflags);
3895                 vport->fc_flag &= ~FC_DISC_TMO;
3896                 spin_unlock_irqrestore(shost->host_lock, iflags);
3897                 del_timer_sync(&vport->fc_disctmo);
3898                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3899                 vport->work_port_events &= ~WORKER_DISC_TMO;
3900                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3901         }
3902
3903         /* Cancel Discovery Timer state <hba_state> */
3904         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3905                          "0248 Cancel Discovery Timer state x%x "
3906                          "Data: x%x x%x x%x\n",
3907                          vport->port_state, vport->fc_flag,
3908                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3909         return 0;
3910 }
3911
3912 /*
3913  * Check specified ring for outstanding IOCB on the SLI queue
3914  * Return true if iocb matches the specified nport
3915  */
3916 int
3917 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3918                     struct lpfc_sli_ring *pring,
3919                     struct lpfc_iocbq *iocb,
3920                     struct lpfc_nodelist *ndlp)
3921 {
3922         struct lpfc_sli *psli = &phba->sli;
3923         IOCB_t *icmd = &iocb->iocb;
3924         struct lpfc_vport    *vport = ndlp->vport;
3925
3926         if (iocb->vport != vport)
3927                 return 0;
3928
3929         if (pring->ringno == LPFC_ELS_RING) {
3930                 switch (icmd->ulpCommand) {
3931                 case CMD_GEN_REQUEST64_CR:
3932                         if (iocb->context_un.ndlp == ndlp)
3933                                 return 1;
3934                 case CMD_ELS_REQUEST64_CR:
3935                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3936                                 return 1;
3937                 case CMD_XMIT_ELS_RSP64_CX:
3938                         if (iocb->context1 == (uint8_t *) ndlp)
3939                                 return 1;
3940                 }
3941         } else if (pring->ringno == psli->extra_ring) {
3942
3943         } else if (pring->ringno == psli->fcp_ring) {
3944                 /* Skip match check if waiting to relogin to FCP target */
3945                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3946                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3947                         return 0;
3948                 }
3949                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3950                         return 1;
3951                 }
3952         } else if (pring->ringno == psli->next_ring) {
3953
3954         }
3955         return 0;
3956 }
3957
3958 /*
3959  * Free resources / clean up outstanding I/Os
3960  * associated with nlp_rpi in the LPFC_NODELIST entry.
3961  */
3962 static int
3963 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3964 {
3965         LIST_HEAD(completions);
3966         struct lpfc_sli *psli;
3967         struct lpfc_sli_ring *pring;
3968         struct lpfc_iocbq *iocb, *next_iocb;
3969         uint32_t i;
3970
3971         lpfc_fabric_abort_nport(ndlp);
3972
3973         /*
3974          * Everything that matches on txcmplq will be returned
3975          * by firmware with a no rpi error.
3976          */
3977         psli = &phba->sli;
3978         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3979                 /* Now process each ring */
3980                 for (i = 0; i < psli->num_rings; i++) {
3981                         pring = &psli->ring[i];
3982
3983                         spin_lock_irq(&phba->hbalock);
3984                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3985                                                  list) {
3986                                 /*
3987                                  * Check to see if iocb matches the nport we are
3988                                  * looking for
3989                                  */
3990                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3991                                                          ndlp))) {
3992                                         /* It matches, so deque and call compl
3993                                            with an error */
3994                                         list_move_tail(&iocb->list,
3995                                                        &completions);
3996                                         pring->txq_cnt--;
3997                                 }
3998                         }
3999                         spin_unlock_irq(&phba->hbalock);
4000                 }
4001         }
4002
4003         /* Cancel all the IOCBs from the completions list */
4004         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4005                               IOERR_SLI_ABORTED);
4006
4007         return 0;
4008 }
4009
4010 /*
4011  * Free rpi associated with LPFC_NODELIST entry.
4012  * This routine is called from lpfc_freenode(), when we are removing
4013  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4014  * LOGO that completes successfully, and we are waiting to PLOGI back
4015  * to the remote NPort. In addition, it is called after we receive
4016  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4017  * we are waiting to PLOGI back to the remote NPort.
4018  */
4019 int
4020 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4021 {
4022         struct lpfc_hba *phba = vport->phba;
4023         LPFC_MBOXQ_t    *mbox;
4024         int rc;
4025
4026         if (ndlp->nlp_flag & NLP_RPI_VALID) {
4027                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4028                 if (mbox) {
4029                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
4030                         mbox->vport = vport;
4031                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4032                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4033                         if (rc == MBX_NOT_FINISHED)
4034                                 mempool_free(mbox, phba->mbox_mem_pool);
4035                 }
4036                 lpfc_no_rpi(phba, ndlp);
4037
4038                 ndlp->nlp_rpi = 0;
4039                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
4040                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4041                 return 1;
4042         }
4043         return 0;
4044 }
4045
4046 /**
4047  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4048  * @phba: pointer to lpfc hba data structure.
4049  *
4050  * This routine is invoked to unregister all the currently registered RPIs
4051  * to the HBA.
4052  **/
4053 void
4054 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4055 {
4056         struct lpfc_vport **vports;
4057         struct lpfc_nodelist *ndlp;
4058         struct Scsi_Host *shost;
4059         int i;
4060
4061         vports = lpfc_create_vport_work_array(phba);
4062         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4063                 shost = lpfc_shost_from_vport(vports[i]);
4064                 spin_lock_irq(shost->host_lock);
4065                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4066                         if (ndlp->nlp_flag & NLP_RPI_VALID) {
4067                                 /* The mempool_alloc might sleep */
4068                                 spin_unlock_irq(shost->host_lock);
4069                                 lpfc_unreg_rpi(vports[i], ndlp);
4070                                 spin_lock_irq(shost->host_lock);
4071                         }
4072                 }
4073                 spin_unlock_irq(shost->host_lock);
4074         }
4075         lpfc_destroy_vport_work_array(phba, vports);
4076 }
4077
4078 void
4079 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4080 {
4081         struct lpfc_hba  *phba  = vport->phba;
4082         LPFC_MBOXQ_t     *mbox;
4083         int rc;
4084
4085         if (phba->sli_rev == LPFC_SLI_REV4) {
4086                 lpfc_sli4_unreg_all_rpis(vport);
4087                 return;
4088         }
4089
4090         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4091         if (mbox) {
4092                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
4093                 mbox->vport = vport;
4094                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4095                 mbox->context1 = NULL;
4096                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4097                 if (rc != MBX_TIMEOUT)
4098                         mempool_free(mbox, phba->mbox_mem_pool);
4099
4100                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4101                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4102                                 "1836 Could not issue "
4103                                 "unreg_login(all_rpis) status %d\n", rc);
4104         }
4105 }
4106
4107 void
4108 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4109 {
4110         struct lpfc_hba  *phba  = vport->phba;
4111         LPFC_MBOXQ_t     *mbox;
4112         int rc;
4113
4114         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4115         if (mbox) {
4116                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
4117                 mbox->vport = vport;
4118                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4119                 mbox->context1 = NULL;
4120                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4121                 if (rc != MBX_TIMEOUT)
4122                         mempool_free(mbox, phba->mbox_mem_pool);
4123
4124                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4125                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4126                                          "1815 Could not issue "
4127                                          "unreg_did (default rpis) status %d\n",
4128                                          rc);
4129         }
4130 }
4131
4132 /*
4133  * Free resources associated with LPFC_NODELIST entry
4134  * so it can be freed.
4135  */
4136 static int
4137 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4138 {
4139         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4140         struct lpfc_hba  *phba = vport->phba;
4141         LPFC_MBOXQ_t *mb, *nextmb;
4142         struct lpfc_dmabuf *mp;
4143
4144         /* Cleanup node for NPort <nlp_DID> */
4145         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4146                          "0900 Cleanup node for NPort x%x "
4147                          "Data: x%x x%x x%x\n",
4148                          ndlp->nlp_DID, ndlp->nlp_flag,
4149                          ndlp->nlp_state, ndlp->nlp_rpi);
4150         if (NLP_CHK_FREE_REQ(ndlp)) {
4151                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4152                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4153                                 "usgmap:x%x refcnt:%d\n",
4154                                 (void *)ndlp, ndlp->nlp_usg_map,
4155                                 atomic_read(&ndlp->kref.refcount));
4156                 lpfc_dequeue_node(vport, ndlp);
4157         } else {
4158                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4159                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4160                                 "usgmap:x%x refcnt:%d\n",
4161                                 (void *)ndlp, ndlp->nlp_usg_map,
4162                                 atomic_read(&ndlp->kref.refcount));
4163                 lpfc_disable_node(vport, ndlp);
4164         }
4165
4166         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4167         if ((mb = phba->sli.mbox_active)) {
4168                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4169                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4170                         mb->context2 = NULL;
4171                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4172                 }
4173         }
4174
4175         spin_lock_irq(&phba->hbalock);
4176         /* Cleanup REG_LOGIN completions which are not yet processed */
4177         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4178                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4179                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4180                         continue;
4181
4182                 mb->context2 = NULL;
4183                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4184         }
4185
4186         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4187                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4188                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4189                         mp = (struct lpfc_dmabuf *) (mb->context1);
4190                         if (mp) {
4191                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4192                                 kfree(mp);
4193                         }
4194                         list_del(&mb->list);
4195                         if (phba->sli_rev == LPFC_SLI_REV4)
4196                                 lpfc_sli4_free_rpi(phba,
4197                                          mb->u.mb.un.varRegLogin.rpi);
4198                         mempool_free(mb, phba->mbox_mem_pool);
4199                         /* We shall not invoke the lpfc_nlp_put to decrement
4200                          * the ndlp reference count as we are in the process
4201                          * of lpfc_nlp_release.
4202                          */
4203                 }
4204         }
4205         spin_unlock_irq(&phba->hbalock);
4206
4207         lpfc_els_abort(phba, ndlp);
4208
4209         spin_lock_irq(shost->host_lock);
4210         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4211         spin_unlock_irq(shost->host_lock);
4212
4213         ndlp->nlp_last_elscmd = 0;
4214         del_timer_sync(&ndlp->nlp_delayfunc);
4215
4216         list_del_init(&ndlp->els_retry_evt.evt_listp);
4217         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4218
4219         lpfc_unreg_rpi(vport, ndlp);
4220
4221         return 0;
4222 }
4223
4224 /*
4225  * Check to see if we can free the nlp back to the freelist.
4226  * If we are in the middle of using the nlp in the discovery state
4227  * machine, defer the free till we reach the end of the state machine.
4228  */
4229 static void
4230 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4231 {
4232         struct lpfc_hba  *phba = vport->phba;
4233         struct lpfc_rport_data *rdata;
4234         LPFC_MBOXQ_t *mbox;
4235         int rc;
4236
4237         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4238         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4239                 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4240             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
4241                 /* For this case we need to cleanup the default rpi
4242                  * allocated by the firmware.
4243                  */
4244                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4245                         != NULL) {
4246                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4247                             (uint8_t *) &vport->fc_sparam, mbox, 0);
4248                         if (rc) {
4249                                 mempool_free(mbox, phba->mbox_mem_pool);
4250                         }
4251                         else {
4252                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4253                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4254                                 mbox->vport = vport;
4255                                 mbox->context2 = NULL;
4256                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4257                                 if (rc == MBX_NOT_FINISHED) {
4258                                         mempool_free(mbox, phba->mbox_mem_pool);
4259                                 }
4260                         }
4261                 }
4262         }
4263         lpfc_cleanup_node(vport, ndlp);
4264
4265         /*
4266          * We can get here with a non-NULL ndlp->rport because when we
4267          * unregister a rport we don't break the rport/node linkage.  So if we
4268          * do, make sure we don't leaving any dangling pointers behind.
4269          */
4270         if (ndlp->rport) {
4271                 rdata = ndlp->rport->dd_data;
4272                 rdata->pnode = NULL;
4273                 ndlp->rport = NULL;
4274         }
4275 }
4276
4277 static int
4278 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4279               uint32_t did)
4280 {
4281         D_ID mydid, ndlpdid, matchdid;
4282
4283         if (did == Bcast_DID)
4284                 return 0;
4285
4286         /* First check for Direct match */
4287         if (ndlp->nlp_DID == did)
4288                 return 1;
4289
4290         /* Next check for area/domain identically equals 0 match */
4291         mydid.un.word = vport->fc_myDID;
4292         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4293                 return 0;
4294         }
4295
4296         matchdid.un.word = did;
4297         ndlpdid.un.word = ndlp->nlp_DID;
4298         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4299                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4300                     (mydid.un.b.area == matchdid.un.b.area)) {
4301                         if ((ndlpdid.un.b.domain == 0) &&
4302                             (ndlpdid.un.b.area == 0)) {
4303                                 if (ndlpdid.un.b.id)
4304                                         return 1;
4305                         }
4306                         return 0;
4307                 }
4308
4309                 matchdid.un.word = ndlp->nlp_DID;
4310                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4311                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4312                         if ((matchdid.un.b.domain == 0) &&
4313                             (matchdid.un.b.area == 0)) {
4314                                 if (matchdid.un.b.id)
4315                                         return 1;
4316                         }
4317                 }
4318         }
4319         return 0;
4320 }
4321
4322 /* Search for a nodelist entry */
4323 static struct lpfc_nodelist *
4324 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4325 {
4326         struct lpfc_nodelist *ndlp;
4327         uint32_t data1;
4328
4329         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4330                 if (lpfc_matchdid(vport, ndlp, did)) {
4331                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4332                                  ((uint32_t) ndlp->nlp_xri << 16) |
4333                                  ((uint32_t) ndlp->nlp_type << 8) |
4334                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4335                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4336                                          "0929 FIND node DID "
4337                                          "Data: x%p x%x x%x x%x\n",
4338                                          ndlp, ndlp->nlp_DID,
4339                                          ndlp->nlp_flag, data1);
4340                         return ndlp;
4341                 }
4342         }
4343
4344         /* FIND node did <did> NOT FOUND */
4345         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4346                          "0932 FIND node did x%x NOT FOUND.\n", did);
4347         return NULL;
4348 }
4349
4350 struct lpfc_nodelist *
4351 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4352 {
4353         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4354         struct lpfc_nodelist *ndlp;
4355
4356         spin_lock_irq(shost->host_lock);
4357         ndlp = __lpfc_findnode_did(vport, did);
4358         spin_unlock_irq(shost->host_lock);
4359         return ndlp;
4360 }
4361
4362 struct lpfc_nodelist *
4363 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4364 {
4365         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4366         struct lpfc_nodelist *ndlp;
4367
4368         ndlp = lpfc_findnode_did(vport, did);
4369         if (!ndlp) {
4370                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4371                     lpfc_rscn_payload_check(vport, did) == 0)
4372                         return NULL;
4373                 ndlp = (struct lpfc_nodelist *)
4374                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4375                 if (!ndlp)
4376                         return NULL;
4377                 lpfc_nlp_init(vport, ndlp, did);
4378                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4379                 spin_lock_irq(shost->host_lock);
4380                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4381                 spin_unlock_irq(shost->host_lock);
4382                 return ndlp;
4383         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4384                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4385                 if (!ndlp)
4386                         return NULL;
4387                 spin_lock_irq(shost->host_lock);
4388                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4389                 spin_unlock_irq(shost->host_lock);
4390                 return ndlp;
4391         }
4392
4393         if ((vport->fc_flag & FC_RSCN_MODE) &&
4394             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4395                 if (lpfc_rscn_payload_check(vport, did)) {
4396                         /* If we've already recieved a PLOGI from this NPort
4397                          * we don't need to try to discover it again.
4398                          */
4399                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4400                                 return NULL;
4401
4402                         /* Since this node is marked for discovery,
4403                          * delay timeout is not needed.
4404                          */
4405                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4406                         spin_lock_irq(shost->host_lock);
4407                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4408                         spin_unlock_irq(shost->host_lock);
4409                 } else
4410                         ndlp = NULL;
4411         } else {
4412                 /* If we've already recieved a PLOGI from this NPort,
4413                  * or we are already in the process of discovery on it,
4414                  * we don't need to try to discover it again.
4415                  */
4416                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4417                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4418                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4419                         return NULL;
4420                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4421                 spin_lock_irq(shost->host_lock);
4422                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4423                 spin_unlock_irq(shost->host_lock);
4424         }
4425         return ndlp;
4426 }
4427
4428 /* Build a list of nodes to discover based on the loopmap */
4429 void
4430 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4431 {
4432         struct lpfc_hba  *phba = vport->phba;
4433         int j;
4434         uint32_t alpa, index;
4435
4436         if (!lpfc_is_link_up(phba))
4437                 return;
4438
4439         if (phba->fc_topology != TOPOLOGY_LOOP)
4440                 return;
4441
4442         /* Check for loop map present or not */
4443         if (phba->alpa_map[0]) {
4444                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4445                         alpa = phba->alpa_map[j];
4446                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4447                                 continue;
4448                         lpfc_setup_disc_node(vport, alpa);
4449                 }
4450         } else {
4451                 /* No alpamap, so try all alpa's */
4452                 for (j = 0; j < FC_MAXLOOP; j++) {
4453                         /* If cfg_scan_down is set, start from highest
4454                          * ALPA (0xef) to lowest (0x1).
4455                          */
4456                         if (vport->cfg_scan_down)
4457                                 index = j;
4458                         else
4459                                 index = FC_MAXLOOP - j - 1;
4460                         alpa = lpfcAlpaArray[index];
4461                         if ((vport->fc_myDID & 0xff) == alpa)
4462                                 continue;
4463                         lpfc_setup_disc_node(vport, alpa);
4464                 }
4465         }
4466         return;
4467 }
4468
4469 void
4470 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4471 {
4472         LPFC_MBOXQ_t *mbox;
4473         struct lpfc_sli *psli = &phba->sli;
4474         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4475         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4476         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4477         int  rc;
4478
4479         /*
4480          * if it's not a physical port or if we already send
4481          * clear_la then don't send it.
4482          */
4483         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4484             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4485                 (phba->sli_rev == LPFC_SLI_REV4))
4486                 return;
4487
4488                         /* Link up discovery */
4489         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4490                 phba->link_state = LPFC_CLEAR_LA;
4491                 lpfc_clear_la(phba, mbox);
4492                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4493                 mbox->vport = vport;
4494                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4495                 if (rc == MBX_NOT_FINISHED) {
4496                         mempool_free(mbox, phba->mbox_mem_pool);
4497                         lpfc_disc_flush_list(vport);
4498                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4499                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4500                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4501                         phba->link_state = LPFC_HBA_ERROR;
4502                 }
4503         }
4504 }
4505
4506 /* Reg_vpi to tell firmware to resume normal operations */
4507 void
4508 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4509 {
4510         LPFC_MBOXQ_t *regvpimbox;
4511
4512         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4513         if (regvpimbox) {
4514                 lpfc_reg_vpi(vport, regvpimbox);
4515                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4516                 regvpimbox->vport = vport;
4517                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4518                                         == MBX_NOT_FINISHED) {
4519                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4520                 }
4521         }
4522 }
4523
4524 /* Start Link up / RSCN discovery on NPR nodes */
4525 void
4526 lpfc_disc_start(struct lpfc_vport *vport)
4527 {
4528         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4529         struct lpfc_hba  *phba = vport->phba;
4530         uint32_t num_sent;
4531         uint32_t clear_la_pending;
4532         int did_changed;
4533
4534         if (!lpfc_is_link_up(phba))
4535                 return;
4536
4537         if (phba->link_state == LPFC_CLEAR_LA)
4538                 clear_la_pending = 1;
4539         else
4540                 clear_la_pending = 0;
4541
4542         if (vport->port_state < LPFC_VPORT_READY)
4543                 vport->port_state = LPFC_DISC_AUTH;
4544
4545         lpfc_set_disctmo(vport);
4546
4547         if (vport->fc_prevDID == vport->fc_myDID)
4548                 did_changed = 0;
4549         else
4550                 did_changed = 1;
4551
4552         vport->fc_prevDID = vport->fc_myDID;
4553         vport->num_disc_nodes = 0;
4554
4555         /* Start Discovery state <hba_state> */
4556         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4557                          "0202 Start Discovery hba state x%x "
4558                          "Data: x%x x%x x%x\n",
4559                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4560                          vport->fc_adisc_cnt);
4561
4562         /* First do ADISCs - if any */
4563         num_sent = lpfc_els_disc_adisc(vport);
4564
4565         if (num_sent)
4566                 return;
4567
4568         /*
4569          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
4570          * continue discovery.
4571          */
4572         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4573             !(vport->fc_flag & FC_PT2PT) &&
4574             !(vport->fc_flag & FC_RSCN_MODE) &&
4575             (phba->sli_rev < LPFC_SLI_REV4)) {
4576                 lpfc_issue_reg_vpi(phba, vport);
4577                 return;
4578         }
4579
4580         /*
4581          * For SLI2, we need to set port_state to READY and continue
4582          * discovery.
4583          */
4584         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4585                 /* If we get here, there is nothing to ADISC */
4586                 if (vport->port_type == LPFC_PHYSICAL_PORT)
4587                         lpfc_issue_clear_la(phba, vport);
4588
4589                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4590                         vport->num_disc_nodes = 0;
4591                         /* go thru NPR nodes and issue ELS PLOGIs */
4592                         if (vport->fc_npr_cnt)
4593                                 lpfc_els_disc_plogi(vport);
4594
4595                         if (!vport->num_disc_nodes) {
4596                                 spin_lock_irq(shost->host_lock);
4597                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4598                                 spin_unlock_irq(shost->host_lock);
4599                                 lpfc_can_disctmo(vport);
4600                         }
4601                 }
4602                 vport->port_state = LPFC_VPORT_READY;
4603         } else {
4604                 /* Next do PLOGIs - if any */
4605                 num_sent = lpfc_els_disc_plogi(vport);
4606
4607                 if (num_sent)
4608                         return;
4609
4610                 if (vport->fc_flag & FC_RSCN_MODE) {
4611                         /* Check to see if more RSCNs came in while we
4612                          * were processing this one.
4613                          */
4614                         if ((vport->fc_rscn_id_cnt == 0) &&
4615                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4616                                 spin_lock_irq(shost->host_lock);
4617                                 vport->fc_flag &= ~FC_RSCN_MODE;
4618                                 spin_unlock_irq(shost->host_lock);
4619                                 lpfc_can_disctmo(vport);
4620                         } else
4621                                 lpfc_els_handle_rscn(vport);
4622                 }
4623         }
4624         return;
4625 }
4626
4627 /*
4628  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4629  *  ring the match the sppecified nodelist.
4630  */
4631 static void
4632 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4633 {
4634         LIST_HEAD(completions);
4635         struct lpfc_sli *psli;
4636         IOCB_t     *icmd;
4637         struct lpfc_iocbq    *iocb, *next_iocb;
4638         struct lpfc_sli_ring *pring;
4639
4640         psli = &phba->sli;
4641         pring = &psli->ring[LPFC_ELS_RING];
4642
4643         /* Error matching iocb on txq or txcmplq
4644          * First check the txq.
4645          */
4646         spin_lock_irq(&phba->hbalock);
4647         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4648                 if (iocb->context1 != ndlp) {
4649                         continue;
4650                 }
4651                 icmd = &iocb->iocb;
4652                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4653                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4654
4655                         list_move_tail(&iocb->list, &completions);
4656                         pring->txq_cnt--;
4657                 }
4658         }
4659
4660         /* Next check the txcmplq */
4661         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4662                 if (iocb->context1 != ndlp) {
4663                         continue;
4664                 }
4665                 icmd = &iocb->iocb;
4666                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4667                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4668                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4669                 }
4670         }
4671         spin_unlock_irq(&phba->hbalock);
4672
4673         /* Cancel all the IOCBs from the completions list */
4674         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4675                               IOERR_SLI_ABORTED);
4676 }
4677
4678 static void
4679 lpfc_disc_flush_list(struct lpfc_vport *vport)
4680 {
4681         struct lpfc_nodelist *ndlp, *next_ndlp;
4682         struct lpfc_hba *phba = vport->phba;
4683
4684         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4685                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4686                                          nlp_listp) {
4687                         if (!NLP_CHK_NODE_ACT(ndlp))
4688                                 continue;
4689                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4690                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4691                                 lpfc_free_tx(phba, ndlp);
4692                         }
4693                 }
4694         }
4695 }
4696
4697 void
4698 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4699 {
4700         lpfc_els_flush_rscn(vport);
4701         lpfc_els_flush_cmd(vport);
4702         lpfc_disc_flush_list(vport);
4703 }
4704
4705 /*****************************************************************************/
4706 /*
4707  * NAME:     lpfc_disc_timeout
4708  *
4709  * FUNCTION: Fibre Channel driver discovery timeout routine.
4710  *
4711  * EXECUTION ENVIRONMENT: interrupt only
4712  *
4713  * CALLED FROM:
4714  *      Timer function
4715  *
4716  * RETURNS:
4717  *      none
4718  */
4719 /*****************************************************************************/
4720 void
4721 lpfc_disc_timeout(unsigned long ptr)
4722 {
4723         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4724         struct lpfc_hba   *phba = vport->phba;
4725         uint32_t tmo_posted;
4726         unsigned long flags = 0;
4727
4728         if (unlikely(!phba))
4729                 return;
4730
4731         spin_lock_irqsave(&vport->work_port_lock, flags);
4732         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4733         if (!tmo_posted)
4734                 vport->work_port_events |= WORKER_DISC_TMO;
4735         spin_unlock_irqrestore(&vport->work_port_lock, flags);
4736
4737         if (!tmo_posted)
4738                 lpfc_worker_wake_up(phba);
4739         return;
4740 }
4741
4742 static void
4743 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4744 {
4745         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4746         struct lpfc_hba  *phba = vport->phba;
4747         struct lpfc_sli  *psli = &phba->sli;
4748         struct lpfc_nodelist *ndlp, *next_ndlp;
4749         LPFC_MBOXQ_t *initlinkmbox;
4750         int rc, clrlaerr = 0;
4751
4752         if (!(vport->fc_flag & FC_DISC_TMO))
4753                 return;
4754
4755         spin_lock_irq(shost->host_lock);
4756         vport->fc_flag &= ~FC_DISC_TMO;
4757         spin_unlock_irq(shost->host_lock);
4758
4759         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4760                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
4761                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4762
4763         switch (vport->port_state) {
4764
4765         case LPFC_LOCAL_CFG_LINK:
4766         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
4767          * FAN
4768          */
4769                                 /* FAN timeout */
4770                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4771                                  "0221 FAN timeout\n");
4772                 /* Start discovery by sending FLOGI, clean up old rpis */
4773                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4774                                          nlp_listp) {
4775                         if (!NLP_CHK_NODE_ACT(ndlp))
4776                                 continue;
4777                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4778                                 continue;
4779                         if (ndlp->nlp_type & NLP_FABRIC) {
4780                                 /* Clean up the ndlp on Fabric connections */
4781                                 lpfc_drop_node(vport, ndlp);
4782
4783                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4784                                 /* Fail outstanding IO now since device
4785                                  * is marked for PLOGI.
4786                                  */
4787                                 lpfc_unreg_rpi(vport, ndlp);
4788                         }
4789                 }
4790                 if (vport->port_state != LPFC_FLOGI) {
4791                         lpfc_initial_flogi(vport);
4792                         return;
4793                 }
4794                 break;
4795
4796         case LPFC_FDISC:
4797         case LPFC_FLOGI:
4798         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4799                 /* Initial FLOGI timeout */
4800                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4801                                  "0222 Initial %s timeout\n",
4802                                  vport->vpi ? "FDISC" : "FLOGI");
4803
4804                 /* Assume no Fabric and go on with discovery.
4805                  * Check for outstanding ELS FLOGI to abort.
4806                  */
4807
4808                 /* FLOGI failed, so just use loop map to make discovery list */
4809                 lpfc_disc_list_loopmap(vport);
4810
4811                 /* Start discovery */
4812                 lpfc_disc_start(vport);
4813                 break;
4814
4815         case LPFC_FABRIC_CFG_LINK:
4816         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4817            NameServer login */
4818                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4819                                  "0223 Timeout while waiting for "
4820                                  "NameServer login\n");
4821                 /* Next look for NameServer ndlp */
4822                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4823                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4824                         lpfc_els_abort(phba, ndlp);
4825
4826                 /* ReStart discovery */
4827                 goto restart_disc;
4828
4829         case LPFC_NS_QRY:
4830         /* Check for wait for NameServer Rsp timeout */
4831                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4832                                  "0224 NameServer Query timeout "
4833                                  "Data: x%x x%x\n",
4834                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4835
4836                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4837                         /* Try it one more time */
4838                         vport->fc_ns_retry++;
4839                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4840                                          vport->fc_ns_retry, 0);
4841                         if (rc == 0)
4842                                 break;
4843                 }
4844                 vport->fc_ns_retry = 0;
4845
4846 restart_disc:
4847                 /*
4848                  * Discovery is over.
4849                  * set port_state to PORT_READY if SLI2.
4850                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4851                  */
4852                 if (phba->sli_rev < LPFC_SLI_REV4) {
4853                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4854                                 lpfc_issue_reg_vpi(phba, vport);
4855                         else  { /* NPIV Not enabled */
4856                                 lpfc_issue_clear_la(phba, vport);
4857                                 vport->port_state = LPFC_VPORT_READY;
4858                         }
4859                 }
4860
4861                 /* Setup and issue mailbox INITIALIZE LINK command */
4862                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4863                 if (!initlinkmbox) {
4864                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4865                                          "0206 Device Discovery "
4866                                          "completion error\n");
4867                         phba->link_state = LPFC_HBA_ERROR;
4868                         break;
4869                 }
4870
4871                 lpfc_linkdown(phba);
4872                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4873                                phba->cfg_link_speed);
4874                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4875                 initlinkmbox->vport = vport;
4876                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4877                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4878                 lpfc_set_loopback_flag(phba);
4879                 if (rc == MBX_NOT_FINISHED)
4880                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4881
4882                 break;
4883
4884         case LPFC_DISC_AUTH:
4885         /* Node Authentication timeout */
4886                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4887                                  "0227 Node Authentication timeout\n");
4888                 lpfc_disc_flush_list(vport);
4889
4890                 /*
4891                  * set port_state to PORT_READY if SLI2.
4892                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4893                  */
4894                 if (phba->sli_rev < LPFC_SLI_REV4) {
4895                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4896                                 lpfc_issue_reg_vpi(phba, vport);
4897                         else  { /* NPIV Not enabled */
4898                                 lpfc_issue_clear_la(phba, vport);
4899                                 vport->port_state = LPFC_VPORT_READY;
4900                         }
4901                 }
4902                 break;
4903
4904         case LPFC_VPORT_READY:
4905                 if (vport->fc_flag & FC_RSCN_MODE) {
4906                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4907                                          "0231 RSCN timeout Data: x%x "
4908                                          "x%x\n",
4909                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4910
4911                         /* Cleanup any outstanding ELS commands */
4912                         lpfc_els_flush_cmd(vport);
4913
4914                         lpfc_els_flush_rscn(vport);
4915                         lpfc_disc_flush_list(vport);
4916                 }
4917                 break;
4918
4919         default:
4920                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4921                                  "0273 Unexpected discovery timeout, "
4922                                  "vport State x%x\n", vport->port_state);
4923                 break;
4924         }
4925
4926         switch (phba->link_state) {
4927         case LPFC_CLEAR_LA:
4928                                 /* CLEAR LA timeout */
4929                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4930                                  "0228 CLEAR LA timeout\n");
4931                 clrlaerr = 1;
4932                 break;
4933
4934         case LPFC_LINK_UP:
4935                 lpfc_issue_clear_la(phba, vport);
4936                 /* Drop thru */
4937         case LPFC_LINK_UNKNOWN:
4938         case LPFC_WARM_START:
4939         case LPFC_INIT_START:
4940         case LPFC_INIT_MBX_CMDS:
4941         case LPFC_LINK_DOWN:
4942         case LPFC_HBA_ERROR:
4943                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4944                                  "0230 Unexpected timeout, hba link "
4945                                  "state x%x\n", phba->link_state);
4946                 clrlaerr = 1;
4947                 break;
4948
4949         case LPFC_HBA_READY:
4950                 break;
4951         }
4952
4953         if (clrlaerr) {
4954                 lpfc_disc_flush_list(vport);
4955                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4956                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4957                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4958                 vport->port_state = LPFC_VPORT_READY;
4959         }
4960
4961         return;
4962 }
4963
4964 /*
4965  * This routine handles processing a NameServer REG_LOGIN mailbox
4966  * command upon completion. It is setup in the LPFC_MBOXQ
4967  * as the completion routine when the command is
4968  * handed off to the SLI layer.
4969  */
4970 void
4971 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4972 {
4973         MAILBOX_t *mb = &pmb->u.mb;
4974         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
4975         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4976         struct lpfc_vport    *vport = pmb->vport;
4977
4978         pmb->context1 = NULL;
4979         pmb->context2 = NULL;
4980
4981         ndlp->nlp_rpi = mb->un.varWords[0];
4982         ndlp->nlp_flag |= NLP_RPI_VALID;
4983         ndlp->nlp_type |= NLP_FABRIC;
4984         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4985
4986         /*
4987          * Start issuing Fabric-Device Management Interface (FDMI) command to
4988          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4989          * fdmi-on=2 (supporting RPA/hostnmae)
4990          */
4991
4992         if (vport->cfg_fdmi_on == 1)
4993                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4994         else
4995                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4996
4997         /* decrement the node reference count held for this callback
4998          * function.
4999          */
5000         lpfc_nlp_put(ndlp);
5001         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5002         kfree(mp);
5003         mempool_free(pmb, phba->mbox_mem_pool);
5004
5005         return;
5006 }
5007
5008 static int
5009 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5010 {
5011         uint16_t *rpi = param;
5012
5013         return ndlp->nlp_rpi == *rpi;
5014 }
5015
5016 static int
5017 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5018 {
5019         return memcmp(&ndlp->nlp_portname, param,
5020                       sizeof(ndlp->nlp_portname)) == 0;
5021 }
5022
5023 static struct lpfc_nodelist *
5024 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5025 {
5026         struct lpfc_nodelist *ndlp;
5027
5028         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5029                 if (filter(ndlp, param))
5030                         return ndlp;
5031         }
5032         return NULL;
5033 }
5034
5035 /*
5036  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5037  * returns the node list element pointer else return NULL.
5038  */
5039 struct lpfc_nodelist *
5040 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5041 {
5042         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5043 }
5044
5045 /*
5046  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5047  * returns the node element list pointer else return NULL.
5048  */
5049 struct lpfc_nodelist *
5050 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5051 {
5052         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5053         struct lpfc_nodelist *ndlp;
5054
5055         spin_lock_irq(shost->host_lock);
5056         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5057         spin_unlock_irq(shost->host_lock);
5058         return ndlp;
5059 }
5060
5061 void
5062 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5063               uint32_t did)
5064 {
5065         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5066
5067         lpfc_initialize_node(vport, ndlp, did);
5068         INIT_LIST_HEAD(&ndlp->nlp_listp);
5069
5070         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5071                 "node init:       did:x%x",
5072                 ndlp->nlp_DID, 0, 0);
5073
5074         return;
5075 }
5076
5077 /* This routine releases all resources associated with a specifc NPort's ndlp
5078  * and mempool_free's the nodelist.
5079  */
5080 static void
5081 lpfc_nlp_release(struct kref *kref)
5082 {
5083         struct lpfc_hba *phba;
5084         unsigned long flags;
5085         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5086                                                   kref);
5087
5088         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5089                 "node release:    did:x%x flg:x%x type:x%x",
5090                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5091
5092         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5093                         "0279 lpfc_nlp_release: ndlp:x%p "
5094                         "usgmap:x%x refcnt:%d\n",
5095                         (void *)ndlp, ndlp->nlp_usg_map,
5096                         atomic_read(&ndlp->kref.refcount));
5097
5098         /* remove ndlp from action. */
5099         lpfc_nlp_remove(ndlp->vport, ndlp);
5100
5101         /* clear the ndlp active flag for all release cases */
5102         phba = ndlp->phba;
5103         spin_lock_irqsave(&phba->ndlp_lock, flags);
5104         NLP_CLR_NODE_ACT(ndlp);
5105         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5106
5107         /* free ndlp memory for final ndlp release */
5108         if (NLP_CHK_FREE_REQ(ndlp)) {
5109                 kfree(ndlp->lat_data);
5110                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5111         }
5112 }
5113
5114 /* This routine bumps the reference count for a ndlp structure to ensure
5115  * that one discovery thread won't free a ndlp while another discovery thread
5116  * is using it.
5117  */
5118 struct lpfc_nodelist *
5119 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5120 {
5121         struct lpfc_hba *phba;
5122         unsigned long flags;
5123
5124         if (ndlp) {
5125                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5126                         "node get:        did:x%x flg:x%x refcnt:x%x",
5127                         ndlp->nlp_DID, ndlp->nlp_flag,
5128                         atomic_read(&ndlp->kref.refcount));
5129                 /* The check of ndlp usage to prevent incrementing the
5130                  * ndlp reference count that is in the process of being
5131                  * released.
5132                  */
5133                 phba = ndlp->phba;
5134                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5135                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5136                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5137                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5138                                 "0276 lpfc_nlp_get: ndlp:x%p "
5139                                 "usgmap:x%x refcnt:%d\n",
5140                                 (void *)ndlp, ndlp->nlp_usg_map,
5141                                 atomic_read(&ndlp->kref.refcount));
5142                         return NULL;
5143                 } else
5144                         kref_get(&ndlp->kref);
5145                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5146         }
5147         return ndlp;
5148 }
5149
5150 /* This routine decrements the reference count for a ndlp structure. If the
5151  * count goes to 0, this indicates the the associated nodelist should be
5152  * freed. Returning 1 indicates the ndlp resource has been released; on the
5153  * other hand, returning 0 indicates the ndlp resource has not been released
5154  * yet.
5155  */
5156 int
5157 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5158 {
5159         struct lpfc_hba *phba;
5160         unsigned long flags;
5161
5162         if (!ndlp)
5163                 return 1;
5164
5165         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5166         "node put:        did:x%x flg:x%x refcnt:x%x",
5167                 ndlp->nlp_DID, ndlp->nlp_flag,
5168                 atomic_read(&ndlp->kref.refcount));
5169         phba = ndlp->phba;
5170         spin_lock_irqsave(&phba->ndlp_lock, flags);
5171         /* Check the ndlp memory free acknowledge flag to avoid the
5172          * possible race condition that kref_put got invoked again
5173          * after previous one has done ndlp memory free.
5174          */
5175         if (NLP_CHK_FREE_ACK(ndlp)) {
5176                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5177                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5178                                 "0274 lpfc_nlp_put: ndlp:x%p "
5179                                 "usgmap:x%x refcnt:%d\n",
5180                                 (void *)ndlp, ndlp->nlp_usg_map,
5181                                 atomic_read(&ndlp->kref.refcount));
5182                 return 1;
5183         }
5184         /* Check the ndlp inactivate log flag to avoid the possible
5185          * race condition that kref_put got invoked again after ndlp
5186          * is already in inactivating state.
5187          */
5188         if (NLP_CHK_IACT_REQ(ndlp)) {
5189                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5190                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5191                                 "0275 lpfc_nlp_put: ndlp:x%p "
5192                                 "usgmap:x%x refcnt:%d\n",
5193                                 (void *)ndlp, ndlp->nlp_usg_map,
5194                                 atomic_read(&ndlp->kref.refcount));
5195                 return 1;
5196         }
5197         /* For last put, mark the ndlp usage flags to make sure no
5198          * other kref_get and kref_put on the same ndlp shall get
5199          * in between the process when the final kref_put has been
5200          * invoked on this ndlp.
5201          */
5202         if (atomic_read(&ndlp->kref.refcount) == 1) {
5203                 /* Indicate ndlp is put to inactive state. */
5204                 NLP_SET_IACT_REQ(ndlp);
5205                 /* Acknowledge ndlp memory free has been seen. */
5206                 if (NLP_CHK_FREE_REQ(ndlp))
5207                         NLP_SET_FREE_ACK(ndlp);
5208         }
5209         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5210         /* Note, the kref_put returns 1 when decrementing a reference
5211          * count that was 1, it invokes the release callback function,
5212          * but it still left the reference count as 1 (not actually
5213          * performs the last decrementation). Otherwise, it actually
5214          * decrements the reference count and returns 0.
5215          */
5216         return kref_put(&ndlp->kref, lpfc_nlp_release);
5217 }
5218
5219 /* This routine free's the specified nodelist if it is not in use
5220  * by any other discovery thread. This routine returns 1 if the
5221  * ndlp has been freed. A return value of 0 indicates the ndlp is
5222  * not yet been released.
5223  */
5224 int
5225 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5226 {
5227         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5228                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5229                 ndlp->nlp_DID, ndlp->nlp_flag,
5230                 atomic_read(&ndlp->kref.refcount));
5231         if (atomic_read(&ndlp->kref.refcount) == 1)
5232                 if (lpfc_nlp_put(ndlp))
5233                         return 1;
5234         return 0;
5235 }
5236
5237 /**
5238  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5239  * @phba: Pointer to hba context object.
5240  *
5241  * This function iterate through all FC nodes associated
5242  * will all vports to check if there is any node with
5243  * fc_rports associated with it. If there is an fc_rport
5244  * associated with the node, then the node is either in
5245  * discovered state or its devloss_timer is pending.
5246  */
5247 static int
5248 lpfc_fcf_inuse(struct lpfc_hba *phba)
5249 {
5250         struct lpfc_vport **vports;
5251         int i, ret = 0;
5252         struct lpfc_nodelist *ndlp;
5253         struct Scsi_Host  *shost;
5254
5255         vports = lpfc_create_vport_work_array(phba);
5256
5257         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5258                 shost = lpfc_shost_from_vport(vports[i]);
5259                 spin_lock_irq(shost->host_lock);
5260                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5261                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5262                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5263                                 ret = 1;
5264                                 spin_unlock_irq(shost->host_lock);
5265                                 goto out;
5266                         } else {
5267                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5268                                         "2624 RPI %x DID %x flg %x still "
5269                                         "logged in\n",
5270                                         ndlp->nlp_rpi, ndlp->nlp_DID,
5271                                         ndlp->nlp_flag);
5272                                 if (ndlp->nlp_flag & NLP_RPI_VALID)
5273                                         ret = 1;
5274                         }
5275                 }
5276                 spin_unlock_irq(shost->host_lock);
5277         }
5278 out:
5279         lpfc_destroy_vport_work_array(phba, vports);
5280         return ret;
5281 }
5282
5283 /**
5284  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5285  * @phba: Pointer to hba context object.
5286  * @mboxq: Pointer to mailbox object.
5287  *
5288  * This function frees memory associated with the mailbox command.
5289  */
5290 static void
5291 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5292 {
5293         struct lpfc_vport *vport = mboxq->vport;
5294         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5295
5296         if (mboxq->u.mb.mbxStatus) {
5297                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5298                         "2555 UNREG_VFI mbxStatus error x%x "
5299                         "HBA state x%x\n",
5300                         mboxq->u.mb.mbxStatus, vport->port_state);
5301         }
5302         spin_lock_irq(shost->host_lock);
5303         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5304         spin_unlock_irq(shost->host_lock);
5305         mempool_free(mboxq, phba->mbox_mem_pool);
5306         return;
5307 }
5308
5309 /**
5310  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5311  * @phba: Pointer to hba context object.
5312  * @mboxq: Pointer to mailbox object.
5313  *
5314  * This function frees memory associated with the mailbox command.
5315  */
5316 static void
5317 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5318 {
5319         struct lpfc_vport *vport = mboxq->vport;
5320
5321         if (mboxq->u.mb.mbxStatus) {
5322                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5323                         "2550 UNREG_FCFI mbxStatus error x%x "
5324                         "HBA state x%x\n",
5325                         mboxq->u.mb.mbxStatus, vport->port_state);
5326         }
5327         mempool_free(mboxq, phba->mbox_mem_pool);
5328         return;
5329 }
5330
5331 /**
5332  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5333  * @phba: Pointer to hba context object.
5334  *
5335  * This function prepare the HBA for unregistering the currently registered
5336  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5337  * VFIs.
5338  */
5339 int
5340 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5341 {
5342         LPFC_MBOXQ_t *mbox;
5343         struct lpfc_vport **vports;
5344         struct lpfc_nodelist *ndlp;
5345         struct Scsi_Host *shost;
5346         int i, rc;
5347
5348         /* Unregister RPIs */
5349         if (lpfc_fcf_inuse(phba))
5350                 lpfc_unreg_hba_rpis(phba);
5351
5352         /* At this point, all discovery is aborted */
5353         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5354
5355         /* Unregister VPIs */
5356         vports = lpfc_create_vport_work_array(phba);
5357         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5358                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5359                         /* Stop FLOGI/FDISC retries */
5360                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5361                         if (ndlp)
5362                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5363                         lpfc_cleanup_pending_mbox(vports[i]);
5364                         if (phba->sli_rev == LPFC_SLI_REV4)
5365                                 lpfc_sli4_unreg_all_rpis(vports[i]);
5366                         lpfc_mbx_unreg_vpi(vports[i]);
5367                         shost = lpfc_shost_from_vport(vports[i]);
5368                         spin_lock_irq(shost->host_lock);
5369                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5370                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5371                         spin_unlock_irq(shost->host_lock);
5372                 }
5373         lpfc_destroy_vport_work_array(phba, vports);
5374
5375         /* Cleanup any outstanding ELS commands */
5376         lpfc_els_flush_all_cmd(phba);
5377
5378         /* Unregister VFI */
5379         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5380         if (!mbox) {
5381                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5382                                 "2556 UNREG_VFI mbox allocation failed"
5383                                 "HBA state x%x\n", phba->pport->port_state);
5384                 return -ENOMEM;
5385         }
5386
5387         lpfc_unreg_vfi(mbox, phba->pport);
5388         mbox->vport = phba->pport;
5389         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
5390
5391         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5392         if (rc == MBX_NOT_FINISHED) {
5393                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5394                                 "2557 UNREG_VFI issue mbox failed rc x%x "
5395                                 "HBA state x%x\n",
5396                                 rc, phba->pport->port_state);
5397                 mempool_free(mbox, phba->mbox_mem_pool);
5398                 return -EIO;
5399         }
5400
5401         shost = lpfc_shost_from_vport(phba->pport);
5402         spin_lock_irq(shost->host_lock);
5403         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5404         spin_unlock_irq(shost->host_lock);
5405
5406         return 0;
5407 }
5408
5409 /**
5410  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5411  * @phba: Pointer to hba context object.
5412  *
5413  * This function issues synchronous unregister FCF mailbox command to HBA to
5414  * unregister the currently registered FCF record. The driver does not reset
5415  * the driver FCF usage state flags.
5416  *
5417  * Return 0 if successfully issued, none-zero otherwise.
5418  */
5419 int
5420 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
5421 {
5422         LPFC_MBOXQ_t *mbox;
5423         int rc;
5424
5425         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5426         if (!mbox) {
5427                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5428                                 "2551 UNREG_FCFI mbox allocation failed"
5429                                 "HBA state x%x\n", phba->pport->port_state);
5430                 return -ENOMEM;
5431         }
5432         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
5433         mbox->vport = phba->pport;
5434         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
5435         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5436
5437         if (rc == MBX_NOT_FINISHED) {
5438                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5439                                 "2552 Unregister FCFI command failed rc x%x "
5440                                 "HBA state x%x\n",
5441                                 rc, phba->pport->port_state);
5442                 return -EINVAL;
5443         }
5444         return 0;
5445 }
5446
5447 /**
5448  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
5449  * @phba: Pointer to hba context object.
5450  *
5451  * This function unregisters the currently reigstered FCF. This function
5452  * also tries to find another FCF for discovery by rescan the HBA FCF table.
5453  */
5454 void
5455 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
5456 {
5457         int rc;
5458
5459         /* Preparation for unregistering fcf */
5460         rc = lpfc_unregister_fcf_prep(phba);
5461         if (rc) {
5462                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5463                                 "2748 Failed to prepare for unregistering "
5464                                 "HBA's FCF record: rc=%d\n", rc);
5465                 return;
5466         }
5467
5468         /* Now, unregister FCF record and reset HBA FCF state */
5469         rc = lpfc_sli4_unregister_fcf(phba);
5470         if (rc)
5471                 return;
5472         /* Reset HBA FCF states after successful unregister FCF */
5473         phba->fcf.fcf_flag = 0;
5474         phba->fcf.current_rec.flag = 0;
5475
5476         /*
5477          * If driver is not unloading, check if there is any other
5478          * FCF record that can be used for discovery.
5479          */
5480         if ((phba->pport->load_flag & FC_UNLOADING) ||
5481             (phba->link_state < LPFC_LINK_UP))
5482                 return;
5483
5484         /* This is considered as the initial FCF discovery scan */
5485         spin_lock_irq(&phba->hbalock);
5486         phba->fcf.fcf_flag |= FCF_INIT_DISC;
5487         spin_unlock_irq(&phba->hbalock);
5488
5489         /* Reset FCF roundrobin bmask for new discovery */
5490         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
5491
5492         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5493
5494         if (rc) {
5495                 spin_lock_irq(&phba->hbalock);
5496                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
5497                 spin_unlock_irq(&phba->hbalock);
5498                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5499                                 "2553 lpfc_unregister_unused_fcf failed "
5500                                 "to read FCF record HBA state x%x\n",
5501                                 phba->pport->port_state);
5502         }
5503 }
5504
5505 /**
5506  * lpfc_unregister_fcf - Unregister the currently registered fcf record
5507  * @phba: Pointer to hba context object.
5508  *
5509  * This function just unregisters the currently reigstered FCF. It does not
5510  * try to find another FCF for discovery.
5511  */
5512 void
5513 lpfc_unregister_fcf(struct lpfc_hba *phba)
5514 {
5515         int rc;
5516
5517         /* Preparation for unregistering fcf */
5518         rc = lpfc_unregister_fcf_prep(phba);
5519         if (rc) {
5520                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5521                                 "2749 Failed to prepare for unregistering "
5522                                 "HBA's FCF record: rc=%d\n", rc);
5523                 return;
5524         }
5525
5526         /* Now, unregister FCF record and reset HBA FCF state */
5527         rc = lpfc_sli4_unregister_fcf(phba);
5528         if (rc)
5529                 return;
5530         /* Set proper HBA FCF states after successful unregister FCF */
5531         spin_lock_irq(&phba->hbalock);
5532         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
5533         spin_unlock_irq(&phba->hbalock);
5534 }
5535
5536 /**
5537  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
5538  * @phba: Pointer to hba context object.
5539  *
5540  * This function check if there are any connected remote port for the FCF and
5541  * if all the devices are disconnected, this function unregister FCFI.
5542  * This function also tries to use another FCF for discovery.
5543  */
5544 void
5545 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
5546 {
5547         /*
5548          * If HBA is not running in FIP mode, if HBA does not support
5549          * FCoE, if FCF discovery is ongoing, or if FCF has not been
5550          * registered, do nothing.
5551          */
5552         spin_lock_irq(&phba->hbalock);
5553         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
5554             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
5555             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
5556             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
5557             (phba->pport->port_state == LPFC_FLOGI)) {
5558                 spin_unlock_irq(&phba->hbalock);
5559                 return;
5560         }
5561         spin_unlock_irq(&phba->hbalock);
5562
5563         if (lpfc_fcf_inuse(phba))
5564                 return;
5565
5566         lpfc_unregister_fcf_rescan(phba);
5567 }
5568
5569 /**
5570  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
5571  * @phba: Pointer to hba context object.
5572  * @buff: Buffer containing the FCF connection table as in the config
5573  *         region.
5574  * This function create driver data structure for the FCF connection
5575  * record table read from config region 23.
5576  */
5577 static void
5578 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
5579         uint8_t *buff)
5580 {
5581         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5582         struct lpfc_fcf_conn_hdr *conn_hdr;
5583         struct lpfc_fcf_conn_rec *conn_rec;
5584         uint32_t record_count;
5585         int i;
5586
5587         /* Free the current connect table */
5588         list_for_each_entry_safe(conn_entry, next_conn_entry,
5589                 &phba->fcf_conn_rec_list, list) {
5590                 list_del_init(&conn_entry->list);
5591                 kfree(conn_entry);
5592         }
5593
5594         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
5595         record_count = conn_hdr->length * sizeof(uint32_t)/
5596                 sizeof(struct lpfc_fcf_conn_rec);
5597
5598         conn_rec = (struct lpfc_fcf_conn_rec *)
5599                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
5600
5601         for (i = 0; i < record_count; i++) {
5602                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
5603                         continue;
5604                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
5605                         GFP_KERNEL);
5606                 if (!conn_entry) {
5607                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5608                                 "2566 Failed to allocate connection"
5609                                 " table entry\n");
5610                         return;
5611                 }
5612
5613                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
5614                         sizeof(struct lpfc_fcf_conn_rec));
5615                 conn_entry->conn_rec.vlan_tag =
5616                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
5617                 conn_entry->conn_rec.flags =
5618                         le16_to_cpu(conn_entry->conn_rec.flags);
5619                 list_add_tail(&conn_entry->list,
5620                         &phba->fcf_conn_rec_list);
5621         }
5622 }
5623
5624 /**
5625  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
5626  * @phba: Pointer to hba context object.
5627  * @buff: Buffer containing the FCoE parameter data structure.
5628  *
5629  *  This function update driver data structure with config
5630  *  parameters read from config region 23.
5631  */
5632 static void
5633 lpfc_read_fcoe_param(struct lpfc_hba *phba,
5634                         uint8_t *buff)
5635 {
5636         struct lpfc_fip_param_hdr *fcoe_param_hdr;
5637         struct lpfc_fcoe_params *fcoe_param;
5638
5639         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
5640                 buff;
5641         fcoe_param = (struct lpfc_fcoe_params *)
5642                 (buff + sizeof(struct lpfc_fip_param_hdr));
5643
5644         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
5645                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
5646                 return;
5647
5648         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
5649                 phba->valid_vlan = 1;
5650                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
5651                         0xFFF;
5652         }
5653
5654         phba->fc_map[0] = fcoe_param->fc_map[0];
5655         phba->fc_map[1] = fcoe_param->fc_map[1];
5656         phba->fc_map[2] = fcoe_param->fc_map[2];
5657         return;
5658 }
5659
5660 /**
5661  * lpfc_get_rec_conf23 - Get a record type in config region data.
5662  * @buff: Buffer containing config region 23 data.
5663  * @size: Size of the data buffer.
5664  * @rec_type: Record type to be searched.
5665  *
5666  * This function searches config region data to find the begining
5667  * of the record specified by record_type. If record found, this
5668  * function return pointer to the record else return NULL.
5669  */
5670 static uint8_t *
5671 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
5672 {
5673         uint32_t offset = 0, rec_length;
5674
5675         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
5676                 (size < sizeof(uint32_t)))
5677                 return NULL;
5678
5679         rec_length = buff[offset + 1];
5680
5681         /*
5682          * One TLV record has one word header and number of data words
5683          * specified in the rec_length field of the record header.
5684          */
5685         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
5686                 <= size) {
5687                 if (buff[offset] == rec_type)
5688                         return &buff[offset];
5689
5690                 if (buff[offset] == LPFC_REGION23_LAST_REC)
5691                         return NULL;
5692
5693                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
5694                 rec_length = buff[offset + 1];
5695         }
5696         return NULL;
5697 }
5698
5699 /**
5700  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
5701  * @phba: Pointer to lpfc_hba data structure.
5702  * @buff: Buffer containing config region 23 data.
5703  * @size: Size of the data buffer.
5704  *
5705  * This function parses the FCoE config parameters in config region 23 and
5706  * populate driver data structure with the parameters.
5707  */
5708 void
5709 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
5710                 uint8_t *buff,
5711                 uint32_t size)
5712 {
5713         uint32_t offset = 0, rec_length;
5714         uint8_t *rec_ptr;
5715
5716         /*
5717          * If data size is less than 2 words signature and version cannot be
5718          * verified.
5719          */
5720         if (size < 2*sizeof(uint32_t))
5721                 return;
5722
5723         /* Check the region signature first */
5724         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
5725                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5726                         "2567 Config region 23 has bad signature\n");
5727                 return;
5728         }
5729
5730         offset += 4;
5731
5732         /* Check the data structure version */
5733         if (buff[offset] != LPFC_REGION23_VERSION) {
5734                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5735                         "2568 Config region 23 has bad version\n");
5736                 return;
5737         }
5738         offset += 4;
5739
5740         rec_length = buff[offset + 1];
5741
5742         /* Read FCoE param record */
5743         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5744                         size - offset, FCOE_PARAM_TYPE);
5745         if (rec_ptr)
5746                 lpfc_read_fcoe_param(phba, rec_ptr);
5747
5748         /* Read FCF connection table */
5749         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5750                 size - offset, FCOE_CONN_TBL_TYPE);
5751         if (rec_ptr)
5752                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5753
5754 }