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) 2004-2016 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 #include <linux/lockdep.h>
  29
  30 #include <scsi/scsi.h>
  31 #include <scsi/scsi_device.h>
  32 #include <scsi/scsi_host.h>
  33 #include <scsi/scsi_transport_fc.h>
  34
  35 #include "lpfc_hw4.h"
  36 #include "lpfc_hw.h"
  37 #include "lpfc_nl.h"
  38 #include "lpfc_disc.h"
  39 #include "lpfc_sli.h"
  40 #include "lpfc_sli4.h"
  41 #include "lpfc_scsi.h"
  42 #include "lpfc.h"
  43 #include "lpfc_logmsg.h"
  44 #include "lpfc_crtn.h"
  45 #include "lpfc_vport.h"
  46 #include "lpfc_debugfs.h"
  47
  48 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  49 static uint8_t lpfcAlpaArray[] = {
  50         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  51         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  52         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  53         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  54         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  55         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  56         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  57         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  58         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  59         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  60         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  61         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  62         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  63 };
  64
  65 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  66 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  67 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  68 static int lpfc_fcf_inuse(struct lpfc_hba *);
  69
  70 void
  71 lpfc_terminate_rport_io(struct fc_rport *rport)
  72 {
  73         struct lpfc_rport_data *rdata;
  74         struct lpfc_nodelist * ndlp;
  75         struct lpfc_hba *phba;
  76
  77         rdata = rport->dd_data;
  78         ndlp = rdata->pnode;
  79
  80         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  81                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  82                         printk(KERN_ERR "Cannot find remote node"
  83                         " to terminate I/O Data x%x\n",
  84                         rport->port_id);
  85                 return;
  86         }
  87
  88         phba  = ndlp->phba;
  89
  90         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  91                 "rport terminate: sid:x%x did:x%x flg:x%x",
  92                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  93
  94         if (ndlp->nlp_sid != NLP_NO_SID) {
  95                 lpfc_sli_abort_iocb(ndlp->vport,
  96                         &phba->sli.ring[phba->sli.fcp_ring],
  97                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  98         }
  99 }
 100
 101 /*
 102  * This function will be called when dev_loss_tmo fire.
 103  */
 104 void
 105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 106 {
 107         struct lpfc_rport_data *rdata;
 108         struct lpfc_nodelist * ndlp;
 109         struct lpfc_vport *vport;
 110         struct Scsi_Host *shost;
 111         struct lpfc_hba   *phba;
 112         struct lpfc_work_evt *evtp;
 113         int  put_node;
 114         int  put_rport;
 115
 116         rdata = rport->dd_data;
 117         ndlp = rdata->pnode;
 118         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 119                 return;
 120
 121         vport = ndlp->vport;
 122         phba  = vport->phba;
 123
 124         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 125                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 126                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 127
 128         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 129                          "3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
 130                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 131
 132         /* Don't defer this if we are in the process of deleting the vport
 133          * or unloading the driver. The unload will cleanup the node
 134          * appropriately we just need to cleanup the ndlp rport info here.
 135          */
 136         if (vport->load_flag & FC_UNLOADING) {
 137                 put_node = rdata->pnode != NULL;
 138                 put_rport = ndlp->rport != NULL;
 139                 rdata->pnode = NULL;
 140                 ndlp->rport = NULL;
 141                 if (put_node)
 142                         lpfc_nlp_put(ndlp);
 143                 if (put_rport)
 144                         put_device(&rport->dev);
 145                 return;
 146         }
 147
 148         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 149                 return;
 150
 151         if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
 152                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
 153                                 "6789 rport name %llx != node port name %llx",
 154                                 rport->port_name,
 155                                 wwn_to_u64(ndlp->nlp_portname.u.wwn));
 156
 157         evtp = &ndlp->dev_loss_evt;
 158
 159         if (!list_empty(&evtp->evt_listp)) {
 160                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
 161                                 "6790 rport name %llx dev_loss_evt pending",
 162                                 rport->port_name);
 163                 return;
 164         }
 165
 166         shost = lpfc_shost_from_vport(vport);
 167         spin_lock_irq(shost->host_lock);
 168         ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 169         spin_unlock_irq(shost->host_lock);
 170
 171         /* We need to hold the node by incrementing the reference
 172          * count until this queued work is done
 173          */
 174         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 175
 176         spin_lock_irq(&phba->hbalock);
 177         if (evtp->evt_arg1) {
 178                 evtp->evt = LPFC_EVT_DEV_LOSS;
 179                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 180                 lpfc_worker_wake_up(phba);
 181         }
 182         spin_unlock_irq(&phba->hbalock);
 183
 184         return;
 185 }
 186
 187 /**
 188  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 189  * @ndlp: Pointer to remote node object.
 190  *
 191  * This function is called from the worker thread when devloss timeout timer
 192  * expires. For SLI4 host, this routine shall return 1 when at lease one
 193  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 194  * routine shall return 0 when there is no remote node is still in use of FCF
 195  * when devloss timeout happened to this @ndlp.
 196  **/
 197 static int
 198 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 199 {
 200         struct lpfc_rport_data *rdata;
 201         struct fc_rport   *rport;
 202         struct lpfc_vport *vport;
 203         struct lpfc_hba   *phba;
 204         struct Scsi_Host  *shost;
 205         uint8_t *name;
 206         int  put_node;
 207         int warn_on = 0;
 208         int fcf_inuse = 0;
 209
 210         rport = ndlp->rport;
 211         vport = ndlp->vport;
 212         shost = lpfc_shost_from_vport(vport);
 213
 214         spin_lock_irq(shost->host_lock);
 215         ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
 216         spin_unlock_irq(shost->host_lock);
 217
 218         if (!rport)
 219                 return fcf_inuse;
 220
 221         name = (uint8_t *) &ndlp->nlp_portname;
 222         phba  = vport->phba;
 223
 224         if (phba->sli_rev == LPFC_SLI_REV4)
 225                 fcf_inuse = lpfc_fcf_inuse(phba);
 226
 227         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 228                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 229                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 230
 231         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 232                          "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
 233                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 234
 235         /*
 236          * lpfc_nlp_remove if reached with dangling rport drops the
 237          * reference. To make sure that does not happen clear rport
 238          * pointer in ndlp before lpfc_nlp_put.
 239          */
 240         rdata = rport->dd_data;
 241
 242         /* Don't defer this if we are in the process of deleting the vport
 243          * or unloading the driver. The unload will cleanup the node
 244          * appropriately we just need to cleanup the ndlp rport info here.
 245          */
 246         if (vport->load_flag & FC_UNLOADING) {
 247                 if (ndlp->nlp_sid != NLP_NO_SID) {
 248                         /* flush the target */
 249                         lpfc_sli_abort_iocb(vport,
 250                                         &phba->sli.ring[phba->sli.fcp_ring],
 251                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 252                 }
 253                 put_node = rdata->pnode != NULL;
 254                 rdata->pnode = NULL;
 255                 ndlp->rport = NULL;
 256                 if (put_node)
 257                         lpfc_nlp_put(ndlp);
 258                 put_device(&rport->dev);
 259
 260                 return fcf_inuse;
 261         }
 262
 263         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 264                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 265                                  "0284 Devloss timeout Ignored on "
 266                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 267                                  "NPort x%x\n",
 268                                  *name, *(name+1), *(name+2), *(name+3),
 269                                  *(name+4), *(name+5), *(name+6), *(name+7),
 270                                  ndlp->nlp_DID);
 271                 return fcf_inuse;
 272         }
 273
 274         put_node = rdata->pnode != NULL;
 275         rdata->pnode = NULL;
 276         ndlp->rport = NULL;
 277         if (put_node)
 278                 lpfc_nlp_put(ndlp);
 279         put_device(&rport->dev);
 280
 281         if (ndlp->nlp_type & NLP_FABRIC)
 282                 return fcf_inuse;
 283
 284         if (ndlp->nlp_sid != NLP_NO_SID) {
 285                 warn_on = 1;
 286                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 287                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 288         }
 289
 290         if (warn_on) {
 291                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 292                                  "0203 Devloss timeout on "
 293                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 294                                  "NPort x%06x Data: x%x x%x x%x\n",
 295                                  *name, *(name+1), *(name+2), *(name+3),
 296                                  *(name+4), *(name+5), *(name+6), *(name+7),
 297                                  ndlp->nlp_DID, ndlp->nlp_flag,
 298                                  ndlp->nlp_state, ndlp->nlp_rpi);
 299         } else {
 300                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 301                                  "0204 Devloss timeout on "
 302                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 303                                  "NPort x%06x Data: x%x x%x x%x\n",
 304                                  *name, *(name+1), *(name+2), *(name+3),
 305                                  *(name+4), *(name+5), *(name+6), *(name+7),
 306                                  ndlp->nlp_DID, ndlp->nlp_flag,
 307                                  ndlp->nlp_state, ndlp->nlp_rpi);
 308         }
 309
 310         if (!(vport->load_flag & FC_UNLOADING) &&
 311             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 312             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 313             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 314             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 315             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 316                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 317
 318         return fcf_inuse;
 319 }
 320
 321 /**
 322  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 323  * @phba: Pointer to hba context object.
 324  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 325  * @nlp_did: remote node identifer with devloss timeout.
 326  *
 327  * This function is called from the worker thread after invoking devloss
 328  * timeout handler and releasing the reference count for the ndlp with
 329  * which the devloss timeout was handled for SLI4 host. For the devloss
 330  * timeout of the last remote node which had been in use of FCF, when this
 331  * routine is invoked, it shall be guaranteed that none of the remote are
 332  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 333  * if the FIP engine is neither in FCF table scan process nor roundrobin
 334  * failover process, the in-use FCF shall be unregistered. If the FIP
 335  * engine is in FCF discovery process, the devloss timeout state shall
 336  * be set for either the FCF table scan process or roundrobin failover
 337  * process to unregister the in-use FCF.
 338  **/
 339 static void
 340 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 341                                     uint32_t nlp_did)
 342 {
 343         /* If devloss timeout happened to a remote node when FCF had no
 344          * longer been in-use, do nothing.
 345          */
 346         if (!fcf_inuse)
 347                 return;
 348
 349         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 350                 spin_lock_irq(&phba->hbalock);
 351                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 352                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 353                                 spin_unlock_irq(&phba->hbalock);
 354                                 return;
 355                         }
 356                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 357                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 358                                         "2847 Last remote node (x%x) using "
 359                                         "FCF devloss tmo\n", nlp_did);
 360                 }
 361                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 362                         spin_unlock_irq(&phba->hbalock);
 363                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 364                                         "2868 Devloss tmo to FCF rediscovery "
 365                                         "in progress\n");
 366                         return;
 367                 }
 368                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 369                         spin_unlock_irq(&phba->hbalock);
 370                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 371                                         "2869 Devloss tmo to idle FIP engine, "
 372                                         "unreg in-use FCF and rescan.\n");
 373                         /* Unregister in-use FCF and rescan */
 374                         lpfc_unregister_fcf_rescan(phba);
 375                         return;
 376                 }
 377                 spin_unlock_irq(&phba->hbalock);
 378                 if (phba->hba_flag & FCF_TS_INPROG)
 379                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 380                                         "2870 FCF table scan in progress\n");
 381                 if (phba->hba_flag & FCF_RR_INPROG)
 382                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 383                                         "2871 FLOGI roundrobin FCF failover "
 384                                         "in progress\n");
 385         }
 386         lpfc_unregister_unused_fcf(phba);
 387 }
 388
 389 /**
 390  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 391  * @phba: Pointer to hba context object.
 392  *
 393  * This function is called from the functions which need to post
 394  * events from interrupt context. This function allocates data
 395  * structure required for posting event. It also keeps track of
 396  * number of events pending and prevent event storm when there are
 397  * too many events.
 398  **/
 399 struct lpfc_fast_path_event *
 400 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 401         struct lpfc_fast_path_event *ret;
 402
 403         /* If there are lot of fast event do not exhaust memory due to this */
 404         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 405                 return NULL;
 406
 407         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 408                         GFP_ATOMIC);
 409         if (ret) {
 410                 atomic_inc(&phba->fast_event_count);
 411                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 412                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 413         }
 414         return ret;
 415 }
 416
 417 /**
 418  * lpfc_free_fast_evt - Frees event data structure
 419  * @phba: Pointer to hba context object.
 420  * @evt:  Event object which need to be freed.
 421  *
 422  * This function frees the data structure required for posting
 423  * events.
 424  **/
 425 void
 426 lpfc_free_fast_evt(struct lpfc_hba *phba,
 427                 struct lpfc_fast_path_event *evt) {
 428
 429         atomic_dec(&phba->fast_event_count);
 430         kfree(evt);
 431 }
 432
 433 /**
 434  * lpfc_send_fastpath_evt - Posts events generated from fast path
 435  * @phba: Pointer to hba context object.
 436  * @evtp: Event data structure.
 437  *
 438  * This function is called from worker thread, when the interrupt
 439  * context need to post an event. This function posts the event
 440  * to fc transport netlink interface.
 441  **/
 442 static void
 443 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 444                 struct lpfc_work_evt *evtp)
 445 {
 446         unsigned long evt_category, evt_sub_category;
 447         struct lpfc_fast_path_event *fast_evt_data;
 448         char *evt_data;
 449         uint32_t evt_data_size;
 450         struct Scsi_Host *shost;
 451
 452         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 453                 work_evt);
 454
 455         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 456         evt_sub_category = (unsigned long) fast_evt_data->un.
 457                         fabric_evt.subcategory;
 458         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 459         if (evt_category == FC_REG_FABRIC_EVENT) {
 460                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 461                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 462                         evt_data_size = sizeof(fast_evt_data->un.
 463                                 read_check_error);
 464                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 465                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 466                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 467                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 468                 } else {
 469                         lpfc_free_fast_evt(phba, fast_evt_data);
 470                         return;
 471                 }
 472         } else if (evt_category == FC_REG_SCSI_EVENT) {
 473                 switch (evt_sub_category) {
 474                 case LPFC_EVENT_QFULL:
 475                 case LPFC_EVENT_DEVBSY:
 476                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 477                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 478                         break;
 479                 case LPFC_EVENT_CHECK_COND:
 480                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 481                         evt_data_size =  sizeof(fast_evt_data->un.
 482                                 check_cond_evt);
 483                         break;
 484                 case LPFC_EVENT_VARQUEDEPTH:
 485                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 486                         evt_data_size = sizeof(fast_evt_data->un.
 487                                 queue_depth_evt);
 488                         break;
 489                 default:
 490                         lpfc_free_fast_evt(phba, fast_evt_data);
 491                         return;
 492                 }
 493         } else {
 494                 lpfc_free_fast_evt(phba, fast_evt_data);
 495                 return;
 496         }
 497
 498         fc_host_post_vendor_event(shost,
 499                 fc_get_event_number(),
 500                 evt_data_size,
 501                 evt_data,
 502                 LPFC_NL_VENDOR_ID);
 503
 504         lpfc_free_fast_evt(phba, fast_evt_data);
 505         return;
 506 }
 507
 508 static void
 509 lpfc_work_list_done(struct lpfc_hba *phba)
 510 {
 511         struct lpfc_work_evt  *evtp = NULL;
 512         struct lpfc_nodelist  *ndlp;
 513         int free_evt;
 514         int fcf_inuse;
 515         uint32_t nlp_did;
 516
 517         spin_lock_irq(&phba->hbalock);
 518         while (!list_empty(&phba->work_list)) {
 519                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 520                                  evt_listp);
 521                 spin_unlock_irq(&phba->hbalock);
 522                 free_evt = 1;
 523                 switch (evtp->evt) {
 524                 case LPFC_EVT_ELS_RETRY:
 525                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 526                         lpfc_els_retry_delay_handler(ndlp);
 527                         free_evt = 0; /* evt is part of ndlp */
 528                         /* decrement the node reference count held
 529                          * for this queued work
 530                          */
 531                         lpfc_nlp_put(ndlp);
 532                         break;
 533                 case LPFC_EVT_DEV_LOSS:
 534                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 535                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 536                         free_evt = 0;
 537                         /* decrement the node reference count held for
 538                          * this queued work
 539                          */
 540                         nlp_did = ndlp->nlp_DID;
 541                         lpfc_nlp_put(ndlp);
 542                         if (phba->sli_rev == LPFC_SLI_REV4)
 543                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 544                                                                     fcf_inuse,
 545                                                                     nlp_did);
 546                         break;
 547                 case LPFC_EVT_ONLINE:
 548                         if (phba->link_state < LPFC_LINK_DOWN)
 549                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 550                         else
 551                                 *(int *) (evtp->evt_arg1) = 0;
 552                         complete((struct completion *)(evtp->evt_arg2));
 553                         break;
 554                 case LPFC_EVT_OFFLINE_PREP:
 555                         if (phba->link_state >= LPFC_LINK_DOWN)
 556                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 557                         *(int *)(evtp->evt_arg1) = 0;
 558                         complete((struct completion *)(evtp->evt_arg2));
 559                         break;
 560                 case LPFC_EVT_OFFLINE:
 561                         lpfc_offline(phba);
 562                         lpfc_sli_brdrestart(phba);
 563                         *(int *)(evtp->evt_arg1) =
 564                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 565                         lpfc_unblock_mgmt_io(phba);
 566                         complete((struct completion *)(evtp->evt_arg2));
 567                         break;
 568                 case LPFC_EVT_WARM_START:
 569                         lpfc_offline(phba);
 570                         lpfc_reset_barrier(phba);
 571                         lpfc_sli_brdreset(phba);
 572                         lpfc_hba_down_post(phba);
 573                         *(int *)(evtp->evt_arg1) =
 574                                 lpfc_sli_brdready(phba, HS_MBRDY);
 575                         lpfc_unblock_mgmt_io(phba);
 576                         complete((struct completion *)(evtp->evt_arg2));
 577                         break;
 578                 case LPFC_EVT_KILL:
 579                         lpfc_offline(phba);
 580                         *(int *)(evtp->evt_arg1)
 581                                 = (phba->pport->stopped)
 582                                         ? 0 : lpfc_sli_brdkill(phba);
 583                         lpfc_unblock_mgmt_io(phba);
 584                         complete((struct completion *)(evtp->evt_arg2));
 585                         break;
 586                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 587                         lpfc_send_fastpath_evt(phba, evtp);
 588                         free_evt = 0;
 589                         break;
 590                 case LPFC_EVT_RESET_HBA:
 591                         if (!(phba->pport->load_flag & FC_UNLOADING))
 592                                 lpfc_reset_hba(phba);
 593                         break;
 594                 }
 595                 if (free_evt)
 596                         kfree(evtp);
 597                 spin_lock_irq(&phba->hbalock);
 598         }
 599         spin_unlock_irq(&phba->hbalock);
 600
 601 }
 602
 603 static void
 604 lpfc_work_done(struct lpfc_hba *phba)
 605 {
 606         struct lpfc_sli_ring *pring;
 607         uint32_t ha_copy, status, control, work_port_events;
 608         struct lpfc_vport **vports;
 609         struct lpfc_vport *vport;
 610         int i;
 611
 612         spin_lock_irq(&phba->hbalock);
 613         ha_copy = phba->work_ha;
 614         phba->work_ha = 0;
 615         spin_unlock_irq(&phba->hbalock);
 616
 617         /* First, try to post the next mailbox command to SLI4 device */
 618         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 619                 lpfc_sli4_post_async_mbox(phba);
 620
 621         if (ha_copy & HA_ERATT)
 622                 /* Handle the error attention event */
 623                 lpfc_handle_eratt(phba);
 624
 625         if (ha_copy & HA_MBATT)
 626                 lpfc_sli_handle_mb_event(phba);
 627
 628         if (ha_copy & HA_LATT)
 629                 lpfc_handle_latt(phba);
 630
 631         /* Process SLI4 events */
 632         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 633                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 634                         lpfc_handle_rrq_active(phba);
 635                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 636                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 637                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 638                         lpfc_sli4_els_xri_abort_event_proc(phba);
 639                 if (phba->hba_flag & ASYNC_EVENT)
 640                         lpfc_sli4_async_event_proc(phba);
 641                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 642                         spin_lock_irq(&phba->hbalock);
 643                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 644                         spin_unlock_irq(&phba->hbalock);
 645                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 646                 }
 647                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 648                         lpfc_sli4_fcf_redisc_event_proc(phba);
 649         }
 650
 651         vports = lpfc_create_vport_work_array(phba);
 652         if (vports != NULL)
 653                 for (i = 0; i <= phba->max_vports; i++) {
 654                         /*
 655                          * We could have no vports in array if unloading, so if
 656                          * this happens then just use the pport
 657                          */
 658                         if (vports[i] == NULL && i == 0)
 659                                 vport = phba->pport;
 660                         else
 661                                 vport = vports[i];
 662                         if (vport == NULL)
 663                                 break;
 664                         spin_lock_irq(&vport->work_port_lock);
 665                         work_port_events = vport->work_port_events;
 666                         vport->work_port_events &= ~work_port_events;
 667                         spin_unlock_irq(&vport->work_port_lock);
 668                         if (work_port_events & WORKER_DISC_TMO)
 669                                 lpfc_disc_timeout_handler(vport);
 670                         if (work_port_events & WORKER_ELS_TMO)
 671                                 lpfc_els_timeout_handler(vport);
 672                         if (work_port_events & WORKER_HB_TMO)
 673                                 lpfc_hb_timeout_handler(phba);
 674                         if (work_port_events & WORKER_MBOX_TMO)
 675                                 lpfc_mbox_timeout_handler(phba);
 676                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 677                                 lpfc_unblock_fabric_iocbs(phba);
 678                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 679                                 lpfc_ramp_down_queue_handler(phba);
 680                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 681                                 lpfc_delayed_disc_timeout_handler(vport);
 682                 }
 683         lpfc_destroy_vport_work_array(phba, vports);
 684
 685         pring = &phba->sli.ring[LPFC_ELS_RING];
 686         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 687         status >>= (4*LPFC_ELS_RING);
 688         if ((status & HA_RXMASK) ||
 689             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 690             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 691                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 692                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 693                         /* Set the lpfc data pending flag */
 694                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 695                 } else {
 696                         if (phba->link_state >= LPFC_LINK_UP) {
 697                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 698                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 699                                                                 (status &
 700                                                                 HA_RXMASK));
 701                         }
 702                 }
 703                 if ((phba->sli_rev == LPFC_SLI_REV4) &&
 704                                  (!list_empty(&pring->txq)))
 705                         lpfc_drain_txq(phba);
 706                 /*
 707                  * Turn on Ring interrupts
 708                  */
 709                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 710                         spin_lock_irq(&phba->hbalock);
 711                         control = readl(phba->HCregaddr);
 712                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 713                                 lpfc_debugfs_slow_ring_trc(phba,
 714                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 715                                         control, ha_copy, 0);
 716
 717                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 718                                 writel(control, phba->HCregaddr);
 719                                 readl(phba->HCregaddr); /* flush */
 720                         } else {
 721                                 lpfc_debugfs_slow_ring_trc(phba,
 722                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 723                                         control, ha_copy, 0);
 724                         }
 725                         spin_unlock_irq(&phba->hbalock);
 726                 }
 727         }
 728         lpfc_work_list_done(phba);
 729 }
 730
 731 int
 732 lpfc_do_work(void *p)
 733 {
 734         struct lpfc_hba *phba = p;
 735         int rc;
 736
 737         set_user_nice(current, MIN_NICE);
 738         current->flags |= PF_NOFREEZE;
 739         phba->data_flags = 0;
 740
 741         while (!kthread_should_stop()) {
 742                 /* wait and check worker queue activities */
 743                 rc = wait_event_interruptible(phba->work_waitq,
 744                                         (test_and_clear_bit(LPFC_DATA_READY,
 745                                                             &phba->data_flags)
 746                                          || kthread_should_stop()));
 747                 /* Signal wakeup shall terminate the worker thread */
 748                 if (rc) {
 749                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 750                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 751                         break;
 752                 }
 753
 754                 /* Attend pending lpfc data processing */
 755                 lpfc_work_done(phba);
 756         }
 757         phba->worker_thread = NULL;
 758         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 759                         "0432 Worker thread stopped.\n");
 760         return 0;
 761 }
 762
 763 /*
 764  * This is only called to handle FC worker events. Since this a rare
 765  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
 766  * embedding it in the IOCB.
 767  */
 768 int
 769 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 770                       uint32_t evt)
 771 {
 772         struct lpfc_work_evt  *evtp;
 773         unsigned long flags;
 774
 775         /*
 776          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 777          * be queued to worker thread for processing
 778          */
 779         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 780         if (!evtp)
 781                 return 0;
 782
 783         evtp->evt_arg1  = arg1;
 784         evtp->evt_arg2  = arg2;
 785         evtp->evt       = evt;
 786
 787         spin_lock_irqsave(&phba->hbalock, flags);
 788         list_add_tail(&evtp->evt_listp, &phba->work_list);
 789         spin_unlock_irqrestore(&phba->hbalock, flags);
 790
 791         lpfc_worker_wake_up(phba);
 792
 793         return 1;
 794 }
 795
 796 void
 797 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 798 {
 799         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 800         struct lpfc_hba  *phba = vport->phba;
 801         struct lpfc_nodelist *ndlp, *next_ndlp;
 802
 803         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 804                 if (!NLP_CHK_NODE_ACT(ndlp))
 805                         continue;
 806                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 807                         continue;
 808                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 809                         ((vport->port_type == LPFC_NPIV_PORT) &&
 810                         (ndlp->nlp_DID == NameServer_DID)))
 811                         lpfc_unreg_rpi(vport, ndlp);
 812
 813                 /* Leave Fabric nodes alone on link down */
 814                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 815                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 816                         continue;
 817                 lpfc_disc_state_machine(vport, ndlp, NULL,
 818                                         remove
 819                                         ? NLP_EVT_DEVICE_RM
 820                                         : NLP_EVT_DEVICE_RECOVERY);
 821         }
 822         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 823                 if (phba->sli_rev == LPFC_SLI_REV4)
 824                         lpfc_sli4_unreg_all_rpis(vport);
 825                 lpfc_mbx_unreg_vpi(vport);
 826                 spin_lock_irq(shost->host_lock);
 827                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 828                 spin_unlock_irq(shost->host_lock);
 829         }
 830 }
 831
 832 void
 833 lpfc_port_link_failure(struct lpfc_vport *vport)
 834 {
 835         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 836
 837         /* Cleanup any outstanding received buffers */
 838         lpfc_cleanup_rcv_buffers(vport);
 839
 840         /* Cleanup any outstanding RSCN activity */
 841         lpfc_els_flush_rscn(vport);
 842
 843         /* Cleanup any outstanding ELS commands */
 844         lpfc_els_flush_cmd(vport);
 845
 846         lpfc_cleanup_rpis(vport, 0);
 847
 848         /* Turn off discovery timer if its running */
 849         lpfc_can_disctmo(vport);
 850 }
 851
 852 void
 853 lpfc_linkdown_port(struct lpfc_vport *vport)
 854 {
 855         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 856
 857         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 858
 859         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 860                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 861                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 862
 863         lpfc_port_link_failure(vport);
 864
 865         /* Stop delayed Nport discovery */
 866         spin_lock_irq(shost->host_lock);
 867         vport->fc_flag &= ~FC_DISC_DELAYED;
 868         spin_unlock_irq(shost->host_lock);
 869         del_timer_sync(&vport->delayed_disc_tmo);
 870 }
 871
 872 int
 873 lpfc_linkdown(struct lpfc_hba *phba)
 874 {
 875         struct lpfc_vport *vport = phba->pport;
 876         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 877         struct lpfc_vport **vports;
 878         LPFC_MBOXQ_t          *mb;
 879         int i;
 880
 881         if (phba->link_state == LPFC_LINK_DOWN)
 882                 return 0;
 883
 884         /* Block all SCSI stack I/Os */
 885         lpfc_scsi_dev_block(phba);
 886
 887         spin_lock_irq(&phba->hbalock);
 888         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 889         spin_unlock_irq(&phba->hbalock);
 890         if (phba->link_state > LPFC_LINK_DOWN) {
 891                 phba->link_state = LPFC_LINK_DOWN;
 892                 spin_lock_irq(shost->host_lock);
 893                 phba->pport->fc_flag &= ~FC_LBIT;
 894                 spin_unlock_irq(shost->host_lock);
 895         }
 896         vports = lpfc_create_vport_work_array(phba);
 897         if (vports != NULL)
 898                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 899                         /* Issue a LINK DOWN event to all nodes */
 900                         lpfc_linkdown_port(vports[i]);
 901                 }
 902         lpfc_destroy_vport_work_array(phba, vports);
 903         /* Clean up any firmware default rpi's */
 904         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 905         if (mb) {
 906                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
 907                 mb->vport = vport;
 908                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 909                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 910                     == MBX_NOT_FINISHED) {
 911                         mempool_free(mb, phba->mbox_mem_pool);
 912                 }
 913         }
 914
 915         /* Setup myDID for link up if we are in pt2pt mode */
 916         if (phba->pport->fc_flag & FC_PT2PT) {
 917                 phba->pport->fc_myDID = 0;
 918                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 919                 if (mb) {
 920                         lpfc_config_link(phba, mb);
 921                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 922                         mb->vport = vport;
 923                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 924                             == MBX_NOT_FINISHED) {
 925                                 mempool_free(mb, phba->mbox_mem_pool);
 926                         }
 927                 }
 928                 spin_lock_irq(shost->host_lock);
 929                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 930                 spin_unlock_irq(shost->host_lock);
 931         }
 932
 933         return 0;
 934 }
 935
 936 static void
 937 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 938 {
 939         struct lpfc_nodelist *ndlp;
 940
 941         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 942                 if (!NLP_CHK_NODE_ACT(ndlp))
 943                         continue;
 944                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 945                         continue;
 946                 if (ndlp->nlp_type & NLP_FABRIC) {
 947                         /* On Linkup its safe to clean up the ndlp
 948                          * from Fabric connections.
 949                          */
 950                         if (ndlp->nlp_DID != Fabric_DID)
 951                                 lpfc_unreg_rpi(vport, ndlp);
 952                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 953                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 954                         /* Fail outstanding IO now since device is
 955                          * marked for PLOGI.
 956                          */
 957                         lpfc_unreg_rpi(vport, ndlp);
 958                 }
 959         }
 960 }
 961
 962 static void
 963 lpfc_linkup_port(struct lpfc_vport *vport)
 964 {
 965         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 966         struct lpfc_hba  *phba = vport->phba;
 967
 968         if ((vport->load_flag & FC_UNLOADING) != 0)
 969                 return;
 970
 971         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 972                 "Link Up:         top:x%x speed:x%x flg:x%x",
 973                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 974
 975         /* If NPIV is not enabled, only bring the physical port up */
 976         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 977                 (vport != phba->pport))
 978                 return;
 979
 980         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 981
 982         spin_lock_irq(shost->host_lock);
 983         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 984                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 985         vport->fc_flag |= FC_NDISC_ACTIVE;
 986         vport->fc_ns_retry = 0;
 987         spin_unlock_irq(shost->host_lock);
 988
 989         if (vport->fc_flag & FC_LBIT)
 990                 lpfc_linkup_cleanup_nodes(vport);
 991
 992 }
 993
 994 static int
 995 lpfc_linkup(struct lpfc_hba *phba)
 996 {
 997         struct lpfc_vport **vports;
 998         int i;
 999
1000         phba->link_state = LPFC_LINK_UP;
1001
1002         /* Unblock fabric iocbs if they are blocked */
1003         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1004         del_timer_sync(&phba->fabric_block_timer);
1005
1006         vports = lpfc_create_vport_work_array(phba);
1007         if (vports != NULL)
1008                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1009                         lpfc_linkup_port(vports[i]);
1010         lpfc_destroy_vport_work_array(phba, vports);
1011
1012         return 0;
1013 }
1014
1015 /*
1016  * This routine handles processing a CLEAR_LA mailbox
1017  * command upon completion. It is setup in the LPFC_MBOXQ
1018  * as the completion routine when the command is
1019  * handed off to the SLI layer.
1020  */
1021 static void
1022 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1023 {
1024         struct lpfc_vport *vport = pmb->vport;
1025         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1026         struct lpfc_sli   *psli = &phba->sli;
1027         MAILBOX_t *mb = &pmb->u.mb;
1028         uint32_t control;
1029
1030         /* Since we don't do discovery right now, turn these off here */
1031         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1032         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1033         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1034
1035         /* Check for error */
1036         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1037                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1038                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1039                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1040                                  "state x%x\n",
1041                                  mb->mbxStatus, vport->port_state);
1042                 phba->link_state = LPFC_HBA_ERROR;
1043                 goto out;
1044         }
1045
1046         if (vport->port_type == LPFC_PHYSICAL_PORT)
1047                 phba->link_state = LPFC_HBA_READY;
1048
1049         spin_lock_irq(&phba->hbalock);
1050         psli->sli_flag |= LPFC_PROCESS_LA;
1051         control = readl(phba->HCregaddr);
1052         control |= HC_LAINT_ENA;
1053         writel(control, phba->HCregaddr);
1054         readl(phba->HCregaddr); /* flush */
1055         spin_unlock_irq(&phba->hbalock);
1056         mempool_free(pmb, phba->mbox_mem_pool);
1057         return;
1058
1059 out:
1060         /* Device Discovery completes */
1061         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1062                          "0225 Device Discovery completes\n");
1063         mempool_free(pmb, phba->mbox_mem_pool);
1064
1065         spin_lock_irq(shost->host_lock);
1066         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1067         spin_unlock_irq(shost->host_lock);
1068
1069         lpfc_can_disctmo(vport);
1070
1071         /* turn on Link Attention interrupts */
1072
1073         spin_lock_irq(&phba->hbalock);
1074         psli->sli_flag |= LPFC_PROCESS_LA;
1075         control = readl(phba->HCregaddr);
1076         control |= HC_LAINT_ENA;
1077         writel(control, phba->HCregaddr);
1078         readl(phba->HCregaddr); /* flush */
1079         spin_unlock_irq(&phba->hbalock);
1080
1081         return;
1082 }
1083
1084
1085 void
1086 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1087 {
1088         struct lpfc_vport *vport = pmb->vport;
1089
1090         if (pmb->u.mb.mbxStatus)
1091                 goto out;
1092
1093         mempool_free(pmb, phba->mbox_mem_pool);
1094
1095         /* don't perform discovery for SLI4 loopback diagnostic test */
1096         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1097             !(phba->hba_flag & HBA_FCOE_MODE) &&
1098             (phba->link_flag & LS_LOOPBACK_MODE))
1099                 return;
1100
1101         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1102             vport->fc_flag & FC_PUBLIC_LOOP &&
1103             !(vport->fc_flag & FC_LBIT)) {
1104                         /* Need to wait for FAN - use discovery timer
1105                          * for timeout.  port_state is identically
1106                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1107                          */
1108                         lpfc_set_disctmo(vport);
1109                         return;
1110         }
1111
1112         /* Start discovery by sending a FLOGI. port_state is identically
1113          * LPFC_FLOGI while waiting for FLOGI cmpl
1114          */
1115         if (vport->port_state != LPFC_FLOGI)
1116                 lpfc_initial_flogi(vport);
1117         else if (vport->fc_flag & FC_PT2PT)
1118                 lpfc_disc_start(vport);
1119         return;
1120
1121 out:
1122         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1123                          "0306 CONFIG_LINK mbxStatus error x%x "
1124                          "HBA state x%x\n",
1125                          pmb->u.mb.mbxStatus, vport->port_state);
1126         mempool_free(pmb, phba->mbox_mem_pool);
1127
1128         lpfc_linkdown(phba);
1129
1130         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1131                          "0200 CONFIG_LINK bad hba state x%x\n",
1132                          vport->port_state);
1133
1134         lpfc_issue_clear_la(phba, vport);
1135         return;
1136 }
1137
1138 /**
1139  * lpfc_sli4_clear_fcf_rr_bmask
1140  * @phba pointer to the struct lpfc_hba for this port.
1141  * This fucnction resets the round robin bit mask and clears the
1142  * fcf priority list. The list deletions are done while holding the
1143  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1144  * from the lpfc_fcf_pri record.
1145  **/
1146 void
1147 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1148 {
1149         struct lpfc_fcf_pri *fcf_pri;
1150         struct lpfc_fcf_pri *next_fcf_pri;
1151         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1152         spin_lock_irq(&phba->hbalock);
1153         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1154                                 &phba->fcf.fcf_pri_list, list) {
1155                 list_del_init(&fcf_pri->list);
1156                 fcf_pri->fcf_rec.flag = 0;
1157         }
1158         spin_unlock_irq(&phba->hbalock);
1159 }
1160 static void
1161 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1162 {
1163         struct lpfc_vport *vport = mboxq->vport;
1164
1165         if (mboxq->u.mb.mbxStatus) {
1166                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1167                          "2017 REG_FCFI mbxStatus error x%x "
1168                          "HBA state x%x\n",
1169                          mboxq->u.mb.mbxStatus, vport->port_state);
1170                 goto fail_out;
1171         }
1172
1173         /* Start FCoE discovery by sending a FLOGI. */
1174         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1175         /* Set the FCFI registered flag */
1176         spin_lock_irq(&phba->hbalock);
1177         phba->fcf.fcf_flag |= FCF_REGISTERED;
1178         spin_unlock_irq(&phba->hbalock);
1179
1180         /* If there is a pending FCoE event, restart FCF table scan. */
1181         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1182                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1183                 goto fail_out;
1184
1185         /* Mark successful completion of FCF table scan */
1186         spin_lock_irq(&phba->hbalock);
1187         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1188         phba->hba_flag &= ~FCF_TS_INPROG;
1189         if (vport->port_state != LPFC_FLOGI) {
1190                 phba->hba_flag |= FCF_RR_INPROG;
1191                 spin_unlock_irq(&phba->hbalock);
1192                 lpfc_issue_init_vfi(vport);
1193                 goto out;
1194         }
1195         spin_unlock_irq(&phba->hbalock);
1196         goto out;
1197
1198 fail_out:
1199         spin_lock_irq(&phba->hbalock);
1200         phba->hba_flag &= ~FCF_RR_INPROG;
1201         spin_unlock_irq(&phba->hbalock);
1202 out:
1203         mempool_free(mboxq, phba->mbox_mem_pool);
1204 }
1205
1206 /**
1207  * lpfc_fab_name_match - Check if the fcf fabric name match.
1208  * @fab_name: pointer to fabric name.
1209  * @new_fcf_record: pointer to fcf record.
1210  *
1211  * This routine compare the fcf record's fabric name with provided
1212  * fabric name. If the fabric name are identical this function
1213  * returns 1 else return 0.
1214  **/
1215 static uint32_t
1216 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1217 {
1218         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1219                 return 0;
1220         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1221                 return 0;
1222         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1223                 return 0;
1224         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1225                 return 0;
1226         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1227                 return 0;
1228         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1229                 return 0;
1230         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1231                 return 0;
1232         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1233                 return 0;
1234         return 1;
1235 }
1236
1237 /**
1238  * lpfc_sw_name_match - Check if the fcf switch name match.
1239  * @fab_name: pointer to fabric name.
1240  * @new_fcf_record: pointer to fcf record.
1241  *
1242  * This routine compare the fcf record's switch name with provided
1243  * switch name. If the switch name are identical this function
1244  * returns 1 else return 0.
1245  **/
1246 static uint32_t
1247 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1248 {
1249         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1250                 return 0;
1251         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1252                 return 0;
1253         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1254                 return 0;
1255         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1256                 return 0;
1257         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1258                 return 0;
1259         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1260                 return 0;
1261         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1262                 return 0;
1263         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1264                 return 0;
1265         return 1;
1266 }
1267
1268 /**
1269  * lpfc_mac_addr_match - Check if the fcf mac address match.
1270  * @mac_addr: pointer to mac address.
1271  * @new_fcf_record: pointer to fcf record.
1272  *
1273  * This routine compare the fcf record's mac address with HBA's
1274  * FCF mac address. If the mac addresses are identical this function
1275  * returns 1 else return 0.
1276  **/
1277 static uint32_t
1278 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1279 {
1280         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1281                 return 0;
1282         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1283                 return 0;
1284         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1285                 return 0;
1286         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1287                 return 0;
1288         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1289                 return 0;
1290         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1291                 return 0;
1292         return 1;
1293 }
1294
1295 static bool
1296 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1297 {
1298         return (curr_vlan_id == new_vlan_id);
1299 }
1300
1301 /**
1302  * lpfc_update_fcf_record - Update driver fcf record
1303  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1304  * @phba: pointer to lpfc hba data structure.
1305  * @fcf_index: Index for the lpfc_fcf_record.
1306  * @new_fcf_record: pointer to hba fcf record.
1307  *
1308  * This routine updates the driver FCF priority record from the new HBA FCF
1309  * record. This routine is called with the host lock held.
1310  **/
1311 static void
1312 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1313                                  struct fcf_record *new_fcf_record
1314                                  )
1315 {
1316         struct lpfc_fcf_pri *fcf_pri;
1317
1318         lockdep_assert_held(&phba->hbalock);
1319
1320         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1321         fcf_pri->fcf_rec.fcf_index = fcf_index;
1322         /* FCF record priority */
1323         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1324
1325 }
1326
1327 /**
1328  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1329  * @fcf: pointer to driver fcf record.
1330  * @new_fcf_record: pointer to fcf record.
1331  *
1332  * This routine copies the FCF information from the FCF
1333  * record to lpfc_hba data structure.
1334  **/
1335 static void
1336 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1337                      struct fcf_record *new_fcf_record)
1338 {
1339         /* Fabric name */
1340         fcf_rec->fabric_name[0] =
1341                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1342         fcf_rec->fabric_name[1] =
1343                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1344         fcf_rec->fabric_name[2] =
1345                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1346         fcf_rec->fabric_name[3] =
1347                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1348         fcf_rec->fabric_name[4] =
1349                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1350         fcf_rec->fabric_name[5] =
1351                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1352         fcf_rec->fabric_name[6] =
1353                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1354         fcf_rec->fabric_name[7] =
1355                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1356         /* Mac address */
1357         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1358         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1359         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1360         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1361         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1362         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1363         /* FCF record index */
1364         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1365         /* FCF record priority */
1366         fcf_rec->priority = new_fcf_record->fip_priority;
1367         /* Switch name */
1368         fcf_rec->switch_name[0] =
1369                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1370         fcf_rec->switch_name[1] =
1371                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1372         fcf_rec->switch_name[2] =
1373                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1374         fcf_rec->switch_name[3] =
1375                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1376         fcf_rec->switch_name[4] =
1377                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1378         fcf_rec->switch_name[5] =
1379                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1380         fcf_rec->switch_name[6] =
1381                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1382         fcf_rec->switch_name[7] =
1383                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1384 }
1385
1386 /**
1387  * lpfc_update_fcf_record - Update driver fcf record
1388  * @phba: pointer to lpfc hba data structure.
1389  * @fcf_rec: pointer to driver fcf record.
1390  * @new_fcf_record: pointer to hba fcf record.
1391  * @addr_mode: address mode to be set to the driver fcf record.
1392  * @vlan_id: vlan tag to be set to the driver fcf record.
1393  * @flag: flag bits to be set to the driver fcf record.
1394  *
1395  * This routine updates the driver FCF record from the new HBA FCF record
1396  * together with the address mode, vlan_id, and other informations. This
1397  * routine is called with the host lock held.
1398  **/
1399 static void
1400 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1401                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1402                        uint16_t vlan_id, uint32_t flag)
1403 {
1404         lockdep_assert_held(&phba->hbalock);
1405
1406         /* Copy the fields from the HBA's FCF record */
1407         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1408         /* Update other fields of driver FCF record */
1409         fcf_rec->addr_mode = addr_mode;
1410         fcf_rec->vlan_id = vlan_id;
1411         fcf_rec->flag |= (flag | RECORD_VALID);
1412         __lpfc_update_fcf_record_pri(phba,
1413                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1414                                  new_fcf_record);
1415 }
1416
1417 /**
1418  * lpfc_register_fcf - Register the FCF with hba.
1419  * @phba: pointer to lpfc hba data structure.
1420  *
1421  * This routine issues a register fcfi mailbox command to register
1422  * the fcf with HBA.
1423  **/
1424 static void
1425 lpfc_register_fcf(struct lpfc_hba *phba)
1426 {
1427         LPFC_MBOXQ_t *fcf_mbxq;
1428         int rc;
1429
1430         spin_lock_irq(&phba->hbalock);
1431         /* If the FCF is not available do nothing. */
1432         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1433                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1434                 spin_unlock_irq(&phba->hbalock);
1435                 return;
1436         }
1437
1438         /* The FCF is already registered, start discovery */
1439         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1440                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1441                 phba->hba_flag &= ~FCF_TS_INPROG;
1442                 if (phba->pport->port_state != LPFC_FLOGI &&
1443                     phba->pport->fc_flag & FC_FABRIC) {
1444                         phba->hba_flag |= FCF_RR_INPROG;
1445                         spin_unlock_irq(&phba->hbalock);
1446                         lpfc_initial_flogi(phba->pport);
1447                         return;
1448                 }
1449                 spin_unlock_irq(&phba->hbalock);
1450                 return;
1451         }
1452         spin_unlock_irq(&phba->hbalock);
1453
1454         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1455         if (!fcf_mbxq) {
1456                 spin_lock_irq(&phba->hbalock);
1457                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1458                 spin_unlock_irq(&phba->hbalock);
1459                 return;
1460         }
1461
1462         lpfc_reg_fcfi(phba, fcf_mbxq);
1463         fcf_mbxq->vport = phba->pport;
1464         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1465         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1466         if (rc == MBX_NOT_FINISHED) {
1467                 spin_lock_irq(&phba->hbalock);
1468                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1469                 spin_unlock_irq(&phba->hbalock);
1470                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1471         }
1472
1473         return;
1474 }
1475
1476 /**
1477  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1478  * @phba: pointer to lpfc hba data structure.
1479  * @new_fcf_record: pointer to fcf record.
1480  * @boot_flag: Indicates if this record used by boot bios.
1481  * @addr_mode: The address mode to be used by this FCF
1482  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1483  *
1484  * This routine compare the fcf record with connect list obtained from the
1485  * config region to decide if this FCF can be used for SAN discovery. It returns
1486  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1487  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1488  * is used by boot bios and addr_mode will indicate the addressing mode to be
1489  * used for this FCF when the function returns.
1490  * If the FCF record need to be used with a particular vlan id, the vlan is
1491  * set in the vlan_id on return of the function. If not VLAN tagging need to
1492  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1493  **/
1494 static int
1495 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1496                         struct fcf_record *new_fcf_record,
1497                         uint32_t *boot_flag, uint32_t *addr_mode,
1498                         uint16_t *vlan_id)
1499 {
1500         struct lpfc_fcf_conn_entry *conn_entry;
1501         int i, j, fcf_vlan_id = 0;
1502
1503         /* Find the lowest VLAN id in the FCF record */
1504         for (i = 0; i < 512; i++) {
1505                 if (new_fcf_record->vlan_bitmap[i]) {
1506                         fcf_vlan_id = i * 8;
1507                         j = 0;
1508                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1509                                 j++;
1510                                 fcf_vlan_id++;
1511                         }
1512                         break;
1513                 }
1514         }
1515
1516         /* FCF not valid/available or solicitation in progress */
1517         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1518             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1519             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1520                 return 0;
1521
1522         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1523                 *boot_flag = 0;
1524                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1525                                 new_fcf_record);
1526                 if (phba->valid_vlan)
1527                         *vlan_id = phba->vlan_id;
1528                 else
1529                         *vlan_id = LPFC_FCOE_NULL_VID;
1530                 return 1;
1531         }
1532
1533         /*
1534          * If there are no FCF connection table entry, driver connect to all
1535          * FCFs.
1536          */
1537         if (list_empty(&phba->fcf_conn_rec_list)) {
1538                 *boot_flag = 0;
1539                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1540                         new_fcf_record);
1541
1542                 /*
1543                  * When there are no FCF connect entries, use driver's default
1544                  * addressing mode - FPMA.
1545                  */
1546                 if (*addr_mode & LPFC_FCF_FPMA)
1547                         *addr_mode = LPFC_FCF_FPMA;
1548
1549                 /* If FCF record report a vlan id use that vlan id */
1550                 if (fcf_vlan_id)
1551                         *vlan_id = fcf_vlan_id;
1552                 else
1553                         *vlan_id = LPFC_FCOE_NULL_VID;
1554                 return 1;
1555         }
1556
1557         list_for_each_entry(conn_entry,
1558                             &phba->fcf_conn_rec_list, list) {
1559                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1560                         continue;
1561
1562                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1563                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1564                                              new_fcf_record))
1565                         continue;
1566                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1567                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1568                                             new_fcf_record))
1569                         continue;
1570                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1571                         /*
1572                          * If the vlan bit map does not have the bit set for the
1573                          * vlan id to be used, then it is not a match.
1574                          */
1575                         if (!(new_fcf_record->vlan_bitmap
1576                                 [conn_entry->conn_rec.vlan_tag / 8] &
1577                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1578                                 continue;
1579                 }
1580
1581                 /*
1582                  * If connection record does not support any addressing mode,
1583                  * skip the FCF record.
1584                  */
1585                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1586                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1587                         continue;
1588
1589                 /*
1590                  * Check if the connection record specifies a required
1591                  * addressing mode.
1592                  */
1593                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1594                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1595
1596                         /*
1597                          * If SPMA required but FCF not support this continue.
1598                          */
1599                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1600                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1601                                         new_fcf_record) & LPFC_FCF_SPMA))
1602                                 continue;
1603
1604                         /*
1605                          * If FPMA required but FCF not support this continue.
1606                          */
1607                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1608                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1609                                 new_fcf_record) & LPFC_FCF_FPMA))
1610                                 continue;
1611                 }
1612
1613                 /*
1614                  * This fcf record matches filtering criteria.
1615                  */
1616                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1617                         *boot_flag = 1;
1618                 else
1619                         *boot_flag = 0;
1620
1621                 /*
1622                  * If user did not specify any addressing mode, or if the
1623                  * preferred addressing mode specified by user is not supported
1624                  * by FCF, allow fabric to pick the addressing mode.
1625                  */
1626                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1627                                 new_fcf_record);
1628                 /*
1629                  * If the user specified a required address mode, assign that
1630                  * address mode
1631                  */
1632                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1633                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1634                         *addr_mode = (conn_entry->conn_rec.flags &
1635                                 FCFCNCT_AM_SPMA) ?
1636                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1637                 /*
1638                  * If the user specified a preferred address mode, use the
1639                  * addr mode only if FCF support the addr_mode.
1640                  */
1641                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1642                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1643                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1644                         (*addr_mode & LPFC_FCF_SPMA))
1645                                 *addr_mode = LPFC_FCF_SPMA;
1646                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1647                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1648                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1649                         (*addr_mode & LPFC_FCF_FPMA))
1650                                 *addr_mode = LPFC_FCF_FPMA;
1651
1652                 /* If matching connect list has a vlan id, use it */
1653                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1654                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1655                 /*
1656                  * If no vlan id is specified in connect list, use the vlan id
1657                  * in the FCF record
1658                  */
1659                 else if (fcf_vlan_id)
1660                         *vlan_id = fcf_vlan_id;
1661                 else
1662                         *vlan_id = LPFC_FCOE_NULL_VID;
1663
1664                 return 1;
1665         }
1666
1667         return 0;
1668 }
1669
1670 /**
1671  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1672  * @phba: pointer to lpfc hba data structure.
1673  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1674  *
1675  * This function check if there is any fcoe event pending while driver
1676  * scan FCF entries. If there is any pending event, it will restart the
1677  * FCF saning and return 1 else return 0.
1678  */
1679 int
1680 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1681 {
1682         /*
1683          * If the Link is up and no FCoE events while in the
1684          * FCF discovery, no need to restart FCF discovery.
1685          */
1686         if ((phba->link_state  >= LPFC_LINK_UP) &&
1687             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1688                 return 0;
1689
1690         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1691                         "2768 Pending link or FCF event during current "
1692                         "handling of the previous event: link_state:x%x, "
1693                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1694                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1695                         phba->fcoe_eventtag);
1696
1697         spin_lock_irq(&phba->hbalock);
1698         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1699         spin_unlock_irq(&phba->hbalock);
1700
1701         if (phba->link_state >= LPFC_LINK_UP) {
1702                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1703                                 "2780 Restart FCF table scan due to "
1704                                 "pending FCF event:evt_tag_at_scan:x%x, "
1705                                 "evt_tag_current:x%x\n",
1706                                 phba->fcoe_eventtag_at_fcf_scan,
1707                                 phba->fcoe_eventtag);
1708                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1709         } else {
1710                 /*
1711                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1712                  * flag
1713                  */
1714                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1715                                 "2833 Stop FCF discovery process due to link "
1716                                 "state change (x%x)\n", phba->link_state);
1717                 spin_lock_irq(&phba->hbalock);
1718                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1719                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1720                 spin_unlock_irq(&phba->hbalock);
1721         }
1722
1723         /* Unregister the currently registered FCF if required */
1724         if (unreg_fcf) {
1725                 spin_lock_irq(&phba->hbalock);
1726                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1727                 spin_unlock_irq(&phba->hbalock);
1728                 lpfc_sli4_unregister_fcf(phba);
1729         }
1730         return 1;
1731 }
1732
1733 /**
1734  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1735  * @phba: pointer to lpfc hba data structure.
1736  * @fcf_cnt: number of eligible fcf record seen so far.
1737  *
1738  * This function makes an running random selection decision on FCF record to
1739  * use through a sequence of @fcf_cnt eligible FCF records with equal
1740  * probability. To perform integer manunipulation of random numbers with
1741  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1742  * from prandom_u32() are taken as the random random number generated.
1743  *
1744  * Returns true when outcome is for the newly read FCF record should be
1745  * chosen; otherwise, return false when outcome is for keeping the previously
1746  * chosen FCF record.
1747  **/
1748 static bool
1749 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1750 {
1751         uint32_t rand_num;
1752
1753         /* Get 16-bit uniform random number */
1754         rand_num = 0xFFFF & prandom_u32();
1755
1756         /* Decision with probability 1/fcf_cnt */
1757         if ((fcf_cnt * rand_num) < 0xFFFF)
1758                 return true;
1759         else
1760                 return false;
1761 }
1762
1763 /**
1764  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1765  * @phba: pointer to lpfc hba data structure.
1766  * @mboxq: pointer to mailbox object.
1767  * @next_fcf_index: pointer to holder of next fcf index.
1768  *
1769  * This routine parses the non-embedded fcf mailbox command by performing the
1770  * necessarily error checking, non-embedded read FCF record mailbox command
1771  * SGE parsing, and endianness swapping.
1772  *
1773  * Returns the pointer to the new FCF record in the non-embedded mailbox
1774  * command DMA memory if successfully, other NULL.
1775  */
1776 static struct fcf_record *
1777 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1778                              uint16_t *next_fcf_index)
1779 {
1780         void *virt_addr;
1781         struct lpfc_mbx_sge sge;
1782         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1783         uint32_t shdr_status, shdr_add_status, if_type;
1784         union lpfc_sli4_cfg_shdr *shdr;
1785         struct fcf_record *new_fcf_record;
1786
1787         /* Get the first SGE entry from the non-embedded DMA memory. This
1788          * routine only uses a single SGE.
1789          */
1790         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1791         if (unlikely(!mboxq->sge_array)) {
1792                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1793                                 "2524 Failed to get the non-embedded SGE "
1794                                 "virtual address\n");
1795                 return NULL;
1796         }
1797         virt_addr = mboxq->sge_array->addr[0];
1798
1799         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1800         lpfc_sli_pcimem_bcopy(shdr, shdr,
1801                               sizeof(union lpfc_sli4_cfg_shdr));
1802         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1803         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1804         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1805         if (shdr_status || shdr_add_status) {
1806                 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
1807                                         if_type == LPFC_SLI_INTF_IF_TYPE_2)
1808                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1809                                         "2726 READ_FCF_RECORD Indicates empty "
1810                                         "FCF table.\n");
1811                 else
1812                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1813                                         "2521 READ_FCF_RECORD mailbox failed "
1814                                         "with status x%x add_status x%x, "
1815                                         "mbx\n", shdr_status, shdr_add_status);
1816                 return NULL;
1817         }
1818
1819         /* Interpreting the returned information of the FCF record */
1820         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1821         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1822                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1823         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1824         new_fcf_record = (struct fcf_record *)(virt_addr +
1825                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1826         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1827                                 offsetof(struct fcf_record, vlan_bitmap));
1828         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1829         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1830
1831         return new_fcf_record;
1832 }
1833
1834 /**
1835  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1836  * @phba: pointer to lpfc hba data structure.
1837  * @fcf_record: pointer to the fcf record.
1838  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1839  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1840  *
1841  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1842  * enabled.
1843  **/
1844 static void
1845 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1846                               struct fcf_record *fcf_record,
1847                               uint16_t vlan_id,
1848                               uint16_t next_fcf_index)
1849 {
1850         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1851                         "2764 READ_FCF_RECORD:\n"
1852                         "\tFCF_Index     : x%x\n"
1853                         "\tFCF_Avail     : x%x\n"
1854                         "\tFCF_Valid     : x%x\n"
1855                         "\tFCF_SOL       : x%x\n"
1856                         "\tFIP_Priority  : x%x\n"
1857                         "\tMAC_Provider  : x%x\n"
1858                         "\tLowest VLANID : x%x\n"
1859                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1860                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1861                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1862                         "\tNext_FCF_Index: x%x\n",
1863                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1864                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1865                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1866                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1867                         fcf_record->fip_priority,
1868                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1869                         vlan_id,
1870                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1871                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1872                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1873                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1874                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1875                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1876                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1877                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1878                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1879                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1880                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1881                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1882                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1883                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1884                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1885                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1886                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1887                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1888                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1889                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1890                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1891                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1892                         next_fcf_index);
1893 }
1894
1895 /**
1896  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1897  * @phba: pointer to lpfc hba data structure.
1898  * @fcf_rec: pointer to an existing FCF record.
1899  * @new_fcf_record: pointer to a new FCF record.
1900  * @new_vlan_id: vlan id from the new FCF record.
1901  *
1902  * This function performs matching test of a new FCF record against an existing
1903  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1904  * will not be used as part of the FCF record matching criteria.
1905  *
1906  * Returns true if all the fields matching, otherwise returns false.
1907  */
1908 static bool
1909 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1910                            struct lpfc_fcf_rec *fcf_rec,
1911                            struct fcf_record *new_fcf_record,
1912                            uint16_t new_vlan_id)
1913 {
1914         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1915                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1916                         return false;
1917         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1918                 return false;
1919         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1920                 return false;
1921         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1922                 return false;
1923         if (fcf_rec->priority != new_fcf_record->fip_priority)
1924                 return false;
1925         return true;
1926 }
1927
1928 /**
1929  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1930  * @vport: Pointer to vport object.
1931  * @fcf_index: index to next fcf.
1932  *
1933  * This function processing the roundrobin fcf failover to next fcf index.
1934  * When this function is invoked, there will be a current fcf registered
1935  * for flogi.
1936  * Return: 0 for continue retrying flogi on currently registered fcf;
1937  *         1 for stop flogi on currently registered fcf;
1938  */
1939 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1940 {
1941         struct lpfc_hba *phba = vport->phba;
1942         int rc;
1943
1944         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1945                 spin_lock_irq(&phba->hbalock);
1946                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1947                         spin_unlock_irq(&phba->hbalock);
1948                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1949                                         "2872 Devloss tmo with no eligible "
1950                                         "FCF, unregister in-use FCF (x%x) "
1951                                         "and rescan FCF table\n",
1952                                         phba->fcf.current_rec.fcf_indx);
1953                         lpfc_unregister_fcf_rescan(phba);
1954                         goto stop_flogi_current_fcf;
1955                 }
1956                 /* Mark the end to FLOGI roundrobin failover */
1957                 phba->hba_flag &= ~FCF_RR_INPROG;
1958                 /* Allow action to new fcf asynchronous event */
1959                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1960                 spin_unlock_irq(&phba->hbalock);
1961                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1962                                 "2865 No FCF available, stop roundrobin FCF "
1963                                 "failover and change port state:x%x/x%x\n",
1964                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1965                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1966                 goto stop_flogi_current_fcf;
1967         } else {
1968                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1969                                 "2794 Try FLOGI roundrobin FCF failover to "
1970                                 "(x%x)\n", fcf_index);
1971                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1972                 if (rc)
1973                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1974                                         "2761 FLOGI roundrobin FCF failover "
1975                                         "failed (rc:x%x) to read FCF (x%x)\n",
1976                                         rc, phba->fcf.current_rec.fcf_indx);
1977                 else
1978                         goto stop_flogi_current_fcf;
1979         }
1980         return 0;
1981
1982 stop_flogi_current_fcf:
1983         lpfc_can_disctmo(vport);
1984         return 1;
1985 }
1986
1987 /**
1988  * lpfc_sli4_fcf_pri_list_del
1989  * @phba: pointer to lpfc hba data structure.
1990  * @fcf_index the index of the fcf record to delete
1991  * This routine checks the on list flag of the fcf_index to be deleted.
1992  * If it is one the list then it is removed from the list, and the flag
1993  * is cleared. This routine grab the hbalock before removing the fcf
1994  * record from the list.
1995  **/
1996 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
1997                         uint16_t fcf_index)
1998 {
1999         struct lpfc_fcf_pri *new_fcf_pri;
2000
2001         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2002         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2003                 "3058 deleting idx x%x pri x%x flg x%x\n",
2004                 fcf_index, new_fcf_pri->fcf_rec.priority,
2005                  new_fcf_pri->fcf_rec.flag);
2006         spin_lock_irq(&phba->hbalock);
2007         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2008                 if (phba->fcf.current_rec.priority ==
2009                                 new_fcf_pri->fcf_rec.priority)
2010                         phba->fcf.eligible_fcf_cnt--;
2011                 list_del_init(&new_fcf_pri->list);
2012                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2013         }
2014         spin_unlock_irq(&phba->hbalock);
2015 }
2016
2017 /**
2018  * lpfc_sli4_set_fcf_flogi_fail
2019  * @phba: pointer to lpfc hba data structure.
2020  * @fcf_index the index of the fcf record to update
2021  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2022  * flag so the the round robin slection for the particular priority level
2023  * will try a different fcf record that does not have this bit set.
2024  * If the fcf record is re-read for any reason this flag is cleared brfore
2025  * adding it to the priority list.
2026  **/
2027 void
2028 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2029 {
2030         struct lpfc_fcf_pri *new_fcf_pri;
2031         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2032         spin_lock_irq(&phba->hbalock);
2033         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2034         spin_unlock_irq(&phba->hbalock);
2035 }
2036
2037 /**
2038  * lpfc_sli4_fcf_pri_list_add
2039  * @phba: pointer to lpfc hba data structure.
2040  * @fcf_index the index of the fcf record to add
2041  * This routine checks the priority of the fcf_index to be added.
2042  * If it is a lower priority than the current head of the fcf_pri list
2043  * then it is added to the list in the right order.
2044  * If it is the same priority as the current head of the list then it
2045  * is added to the head of the list and its bit in the rr_bmask is set.
2046  * If the fcf_index to be added is of a higher priority than the current
2047  * head of the list then the rr_bmask is cleared, its bit is set in the
2048  * rr_bmask and it is added to the head of the list.
2049  * returns:
2050  * 0=success 1=failure
2051  **/
2052 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2053         uint16_t fcf_index,
2054         struct fcf_record *new_fcf_record)
2055 {
2056         uint16_t current_fcf_pri;
2057         uint16_t last_index;
2058         struct lpfc_fcf_pri *fcf_pri;
2059         struct lpfc_fcf_pri *next_fcf_pri;
2060         struct lpfc_fcf_pri *new_fcf_pri;
2061         int ret;
2062
2063         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2064         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2065                 "3059 adding idx x%x pri x%x flg x%x\n",
2066                 fcf_index, new_fcf_record->fip_priority,
2067                  new_fcf_pri->fcf_rec.flag);
2068         spin_lock_irq(&phba->hbalock);
2069         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2070                 list_del_init(&new_fcf_pri->list);
2071         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2072         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2073         if (list_empty(&phba->fcf.fcf_pri_list)) {
2074                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2075                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2076                                 new_fcf_pri->fcf_rec.fcf_index);
2077                 goto out;
2078         }
2079
2080         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2081                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2082         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2083                 ret = 0; /* Empty rr list */
2084                 goto out;
2085         }
2086         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2087         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2088                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2089                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2090                         memset(phba->fcf.fcf_rr_bmask, 0,
2091                                 sizeof(*phba->fcf.fcf_rr_bmask));
2092                         /* fcfs_at_this_priority_level = 1; */
2093                         phba->fcf.eligible_fcf_cnt = 1;
2094                 } else
2095                         /* fcfs_at_this_priority_level++; */
2096                         phba->fcf.eligible_fcf_cnt++;
2097                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2098                                 new_fcf_pri->fcf_rec.fcf_index);
2099                 goto out;
2100         }
2101
2102         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2103                                 &phba->fcf.fcf_pri_list, list) {
2104                 if (new_fcf_pri->fcf_rec.priority <=
2105                                 fcf_pri->fcf_rec.priority) {
2106                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2107                                 list_add(&new_fcf_pri->list,
2108                                                 &phba->fcf.fcf_pri_list);
2109                         else
2110                                 list_add(&new_fcf_pri->list,
2111                                          &((struct lpfc_fcf_pri *)
2112                                         fcf_pri->list.prev)->list);
2113                         ret = 0;
2114                         goto out;
2115                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2116                         || new_fcf_pri->fcf_rec.priority <
2117                                 next_fcf_pri->fcf_rec.priority) {
2118                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2119                         ret = 0;
2120                         goto out;
2121                 }
2122                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2123                         continue;
2124
2125         }
2126         ret = 1;
2127 out:
2128         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2129         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2130         spin_unlock_irq(&phba->hbalock);
2131         return ret;
2132 }
2133
2134 /**
2135  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2136  * @phba: pointer to lpfc hba data structure.
2137  * @mboxq: pointer to mailbox object.
2138  *
2139  * This function iterates through all the fcf records available in
2140  * HBA and chooses the optimal FCF record for discovery. After finding
2141  * the FCF for discovery it registers the FCF record and kicks start
2142  * discovery.
2143  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2144  * use an FCF record which matches fabric name and mac address of the
2145  * currently used FCF record.
2146  * If the driver supports only one FCF, it will try to use the FCF record
2147  * used by BOOT_BIOS.
2148  */
2149 void
2150 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2151 {
2152         struct fcf_record *new_fcf_record;
2153         uint32_t boot_flag, addr_mode;
2154         uint16_t fcf_index, next_fcf_index;
2155         struct lpfc_fcf_rec *fcf_rec = NULL;
2156         uint16_t vlan_id;
2157         bool select_new_fcf;
2158         int rc;
2159
2160         /* If there is pending FCoE event restart FCF table scan */
2161         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2162                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2163                 return;
2164         }
2165
2166         /* Parse the FCF record from the non-embedded mailbox command */
2167         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2168                                                       &next_fcf_index);
2169         if (!new_fcf_record) {
2170                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2171                                 "2765 Mailbox command READ_FCF_RECORD "
2172                                 "failed to retrieve a FCF record.\n");
2173                 /* Let next new FCF event trigger fast failover */
2174                 spin_lock_irq(&phba->hbalock);
2175                 phba->hba_flag &= ~FCF_TS_INPROG;
2176                 spin_unlock_irq(&phba->hbalock);
2177                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2178                 return;
2179         }
2180
2181         /* Check the FCF record against the connection list */
2182         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2183                                       &addr_mode, &vlan_id);
2184
2185         /* Log the FCF record information if turned on */
2186         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2187                                       next_fcf_index);
2188
2189         /*
2190          * If the fcf record does not match with connect list entries
2191          * read the next entry; otherwise, this is an eligible FCF
2192          * record for roundrobin FCF failover.
2193          */
2194         if (!rc) {
2195                 lpfc_sli4_fcf_pri_list_del(phba,
2196                                         bf_get(lpfc_fcf_record_fcf_index,
2197                                                new_fcf_record));
2198                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2199                                 "2781 FCF (x%x) failed connection "
2200                                 "list check: (x%x/x%x/%x)\n",
2201                                 bf_get(lpfc_fcf_record_fcf_index,
2202                                        new_fcf_record),
2203                                 bf_get(lpfc_fcf_record_fcf_avail,
2204                                        new_fcf_record),
2205                                 bf_get(lpfc_fcf_record_fcf_valid,
2206                                        new_fcf_record),
2207                                 bf_get(lpfc_fcf_record_fcf_sol,
2208                                        new_fcf_record));
2209                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2210                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2211                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2212                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2213                             phba->fcf.current_rec.fcf_indx) {
2214                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2215                                         "2862 FCF (x%x) matches property "
2216                                         "of in-use FCF (x%x)\n",
2217                                         bf_get(lpfc_fcf_record_fcf_index,
2218                                                new_fcf_record),
2219                                         phba->fcf.current_rec.fcf_indx);
2220                                 goto read_next_fcf;
2221                         }
2222                         /*
2223                          * In case the current in-use FCF record becomes
2224                          * invalid/unavailable during FCF discovery that
2225                          * was not triggered by fast FCF failover process,
2226                          * treat it as fast FCF failover.
2227                          */
2228                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2229                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2230                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2231                                                 "2835 Invalid in-use FCF "
2232                                                 "(x%x), enter FCF failover "
2233                                                 "table scan.\n",
2234                                                 phba->fcf.current_rec.fcf_indx);
2235                                 spin_lock_irq(&phba->hbalock);
2236                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2237                                 spin_unlock_irq(&phba->hbalock);
2238                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2239                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2240                                                 LPFC_FCOE_FCF_GET_FIRST);
2241                                 return;
2242                         }
2243                 }
2244                 goto read_next_fcf;
2245         } else {
2246                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2247                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2248                                                         new_fcf_record);
2249                 if (rc)
2250                         goto read_next_fcf;
2251         }
2252
2253         /*
2254          * If this is not the first FCF discovery of the HBA, use last
2255          * FCF record for the discovery. The condition that a rescan
2256          * matches the in-use FCF record: fabric name, switch name, mac
2257          * address, and vlan_id.
2258          */
2259         spin_lock_irq(&phba->hbalock);
2260         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2261                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2262                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2263                     new_fcf_record, vlan_id)) {
2264                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2265                             phba->fcf.current_rec.fcf_indx) {
2266                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2267                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2268                                         /* Stop FCF redisc wait timer */
2269                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2270                                                                         phba);
2271                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2272                                         /* Fast failover, mark completed */
2273                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2274                                 spin_unlock_irq(&phba->hbalock);
2275                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2276                                                 "2836 New FCF matches in-use "
2277                                                 "FCF (x%x), port_state:x%x, "
2278                                                 "fc_flag:x%x\n",
2279                                                 phba->fcf.current_rec.fcf_indx,
2280                                                 phba->pport->port_state,
2281                                                 phba->pport->fc_flag);
2282                                 goto out;
2283                         } else
2284                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2285                                         "2863 New FCF (x%x) matches "
2286                                         "property of in-use FCF (x%x)\n",
2287                                         bf_get(lpfc_fcf_record_fcf_index,
2288                                                new_fcf_record),
2289                                         phba->fcf.current_rec.fcf_indx);
2290                 }
2291                 /*
2292                  * Read next FCF record from HBA searching for the matching
2293                  * with in-use record only if not during the fast failover
2294                  * period. In case of fast failover period, it shall try to
2295                  * determine whether the FCF record just read should be the
2296                  * next candidate.
2297                  */
2298                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2299                         spin_unlock_irq(&phba->hbalock);
2300                         goto read_next_fcf;
2301                 }
2302         }
2303         /*
2304          * Update on failover FCF record only if it's in FCF fast-failover
2305          * period; otherwise, update on current FCF record.
2306          */
2307         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2308                 fcf_rec = &phba->fcf.failover_rec;
2309         else
2310                 fcf_rec = &phba->fcf.current_rec;
2311
2312         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2313                 /*
2314                  * If the driver FCF record does not have boot flag
2315                  * set and new hba fcf record has boot flag set, use
2316                  * the new hba fcf record.
2317                  */
2318                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2319                         /* Choose this FCF record */
2320                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2321                                         "2837 Update current FCF record "
2322                                         "(x%x) with new FCF record (x%x)\n",
2323                                         fcf_rec->fcf_indx,
2324                                         bf_get(lpfc_fcf_record_fcf_index,
2325                                         new_fcf_record));
2326                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2327                                         addr_mode, vlan_id, BOOT_ENABLE);
2328                         spin_unlock_irq(&phba->hbalock);
2329                         goto read_next_fcf;
2330                 }
2331                 /*
2332                  * If the driver FCF record has boot flag set and the
2333                  * new hba FCF record does not have boot flag, read
2334                  * the next FCF record.
2335                  */
2336                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2337                         spin_unlock_irq(&phba->hbalock);
2338                         goto read_next_fcf;
2339                 }
2340                 /*
2341                  * If the new hba FCF record has lower priority value
2342                  * than the driver FCF record, use the new record.
2343                  */
2344                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2345                         /* Choose the new FCF record with lower priority */
2346                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2347                                         "2838 Update current FCF record "
2348                                         "(x%x) with new FCF record (x%x)\n",
2349                                         fcf_rec->fcf_indx,
2350                                         bf_get(lpfc_fcf_record_fcf_index,
2351                                                new_fcf_record));
2352                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2353                                         addr_mode, vlan_id, 0);
2354                         /* Reset running random FCF selection count */
2355                         phba->fcf.eligible_fcf_cnt = 1;
2356                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2357                         /* Update running random FCF selection count */
2358                         phba->fcf.eligible_fcf_cnt++;
2359                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2360                                                 phba->fcf.eligible_fcf_cnt);
2361                         if (select_new_fcf) {
2362                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2363                                         "2839 Update current FCF record "
2364                                         "(x%x) with new FCF record (x%x)\n",
2365                                         fcf_rec->fcf_indx,
2366                                         bf_get(lpfc_fcf_record_fcf_index,
2367                                                new_fcf_record));
2368                                 /* Choose the new FCF by random selection */
2369                                 __lpfc_update_fcf_record(phba, fcf_rec,
2370                                                          new_fcf_record,
2371                                                          addr_mode, vlan_id, 0);
2372                         }
2373                 }
2374                 spin_unlock_irq(&phba->hbalock);
2375                 goto read_next_fcf;
2376         }
2377         /*
2378          * This is the first suitable FCF record, choose this record for
2379          * initial best-fit FCF.
2380          */
2381         if (fcf_rec) {
2382                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2383                                 "2840 Update initial FCF candidate "
2384                                 "with FCF (x%x)\n",
2385                                 bf_get(lpfc_fcf_record_fcf_index,
2386                                        new_fcf_record));
2387                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2388                                          addr_mode, vlan_id, (boot_flag ?
2389                                          BOOT_ENABLE : 0));
2390                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2391                 /* Setup initial running random FCF selection count */
2392                 phba->fcf.eligible_fcf_cnt = 1;
2393         }
2394         spin_unlock_irq(&phba->hbalock);
2395         goto read_next_fcf;
2396
2397 read_next_fcf:
2398         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2399         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2400                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2401                         /*
2402                          * Case of FCF fast failover scan
2403                          */
2404
2405                         /*
2406                          * It has not found any suitable FCF record, cancel
2407                          * FCF scan inprogress, and do nothing
2408                          */
2409                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2410                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2411                                                "2782 No suitable FCF found: "
2412                                                "(x%x/x%x)\n",
2413                                                phba->fcoe_eventtag_at_fcf_scan,
2414                                                bf_get(lpfc_fcf_record_fcf_index,
2415                                                       new_fcf_record));
2416                                 spin_lock_irq(&phba->hbalock);
2417                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2418                                         phba->hba_flag &= ~FCF_TS_INPROG;
2419                                         spin_unlock_irq(&phba->hbalock);
2420                                         /* Unregister in-use FCF and rescan */
2421                                         lpfc_printf_log(phba, KERN_INFO,
2422                                                         LOG_FIP,
2423                                                         "2864 On devloss tmo "
2424                                                         "unreg in-use FCF and "
2425                                                         "rescan FCF table\n");
2426                                         lpfc_unregister_fcf_rescan(phba);
2427                                         return;
2428                                 }
2429                                 /*
2430                                  * Let next new FCF event trigger fast failover
2431                                  */
2432                                 phba->hba_flag &= ~FCF_TS_INPROG;
2433                                 spin_unlock_irq(&phba->hbalock);
2434                                 return;
2435                         }
2436                         /*
2437                          * It has found a suitable FCF record that is not
2438                          * the same as in-use FCF record, unregister the
2439                          * in-use FCF record, replace the in-use FCF record
2440                          * with the new FCF record, mark FCF fast failover
2441                          * completed, and then start register the new FCF
2442                          * record.
2443                          */
2444
2445                         /* Unregister the current in-use FCF record */
2446                         lpfc_unregister_fcf(phba);
2447
2448                         /* Replace in-use record with the new record */
2449                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2450                                         "2842 Replace in-use FCF (x%x) "
2451                                         "with failover FCF (x%x)\n",
2452                                         phba->fcf.current_rec.fcf_indx,
2453                                         phba->fcf.failover_rec.fcf_indx);
2454                         memcpy(&phba->fcf.current_rec,
2455                                &phba->fcf.failover_rec,
2456                                sizeof(struct lpfc_fcf_rec));
2457                         /*
2458                          * Mark the fast FCF failover rediscovery completed
2459                          * and the start of the first round of the roundrobin
2460                          * FCF failover.
2461                          */
2462                         spin_lock_irq(&phba->hbalock);
2463                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2464                         spin_unlock_irq(&phba->hbalock);
2465                         /* Register to the new FCF record */
2466                         lpfc_register_fcf(phba);
2467                 } else {
2468                         /*
2469                          * In case of transaction period to fast FCF failover,
2470                          * do nothing when search to the end of the FCF table.
2471                          */
2472                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2473                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2474                                 return;
2475
2476                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2477                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2478                                 /*
2479                                  * In case the current in-use FCF record no
2480                                  * longer existed during FCF discovery that
2481                                  * was not triggered by fast FCF failover
2482                                  * process, treat it as fast FCF failover.
2483                                  */
2484                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2485                                                 "2841 In-use FCF record (x%x) "
2486                                                 "not reported, entering fast "
2487                                                 "FCF failover mode scanning.\n",
2488                                                 phba->fcf.current_rec.fcf_indx);
2489                                 spin_lock_irq(&phba->hbalock);
2490                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2491                                 spin_unlock_irq(&phba->hbalock);
2492                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2493                                                 LPFC_FCOE_FCF_GET_FIRST);
2494                                 return;
2495                         }
2496                         /* Register to the new FCF record */
2497                         lpfc_register_fcf(phba);
2498                 }
2499         } else
2500                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2501         return;
2502
2503 out:
2504         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2505         lpfc_register_fcf(phba);
2506
2507         return;
2508 }
2509
2510 /**
2511  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2512  * @phba: pointer to lpfc hba data structure.
2513  * @mboxq: pointer to mailbox object.
2514  *
2515  * This is the callback function for FLOGI failure roundrobin FCF failover
2516  * read FCF record mailbox command from the eligible FCF record bmask for
2517  * performing the failover. If the FCF read back is not valid/available, it
2518  * fails through to retrying FLOGI to the currently registered FCF again.
2519  * Otherwise, if the FCF read back is valid and available, it will set the
2520  * newly read FCF record to the failover FCF record, unregister currently
2521  * registered FCF record, copy the failover FCF record to the current
2522  * FCF record, and then register the current FCF record before proceeding
2523  * to trying FLOGI on the new failover FCF.
2524  */
2525 void
2526 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2527 {
2528         struct fcf_record *new_fcf_record;
2529         uint32_t boot_flag, addr_mode;
2530         uint16_t next_fcf_index, fcf_index;
2531         uint16_t current_fcf_index;
2532         uint16_t vlan_id;
2533         int rc;
2534
2535         /* If link state is not up, stop the roundrobin failover process */
2536         if (phba->link_state < LPFC_LINK_UP) {
2537                 spin_lock_irq(&phba->hbalock);
2538                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2539                 phba->hba_flag &= ~FCF_RR_INPROG;
2540                 spin_unlock_irq(&phba->hbalock);
2541                 goto out;
2542         }
2543
2544         /* Parse the FCF record from the non-embedded mailbox command */
2545         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2546                                                       &next_fcf_index);
2547         if (!new_fcf_record) {
2548                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2549                                 "2766 Mailbox command READ_FCF_RECORD "
2550                                 "failed to retrieve a FCF record. "
2551                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2552                                 phba->fcf.fcf_flag);
2553                 lpfc_unregister_fcf_rescan(phba);
2554                 goto out;
2555         }
2556
2557         /* Get the needed parameters from FCF record */
2558         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2559                                       &addr_mode, &vlan_id);
2560
2561         /* Log the FCF record information if turned on */
2562         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2563                                       next_fcf_index);
2564
2565         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2566         if (!rc) {
2567                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2568                                 "2848 Remove ineligible FCF (x%x) from "
2569                                 "from roundrobin bmask\n", fcf_index);
2570                 /* Clear roundrobin bmask bit for ineligible FCF */
2571                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2572                 /* Perform next round of roundrobin FCF failover */
2573                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2574                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2575                 if (rc)
2576                         goto out;
2577                 goto error_out;
2578         }
2579
2580         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2581                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2582                                 "2760 Perform FLOGI roundrobin FCF failover: "
2583                                 "FCF (x%x) back to FCF (x%x)\n",
2584                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2585                 /* Wait 500 ms before retrying FLOGI to current FCF */
2586                 msleep(500);
2587                 lpfc_issue_init_vfi(phba->pport);
2588                 goto out;
2589         }
2590
2591         /* Upload new FCF record to the failover FCF record */
2592         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2593                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2594                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2595         spin_lock_irq(&phba->hbalock);
2596         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2597                                  new_fcf_record, addr_mode, vlan_id,
2598                                  (boot_flag ? BOOT_ENABLE : 0));
2599         spin_unlock_irq(&phba->hbalock);
2600
2601         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2602
2603         /* Unregister the current in-use FCF record */
2604         lpfc_unregister_fcf(phba);
2605
2606         /* Replace in-use record with the new record */
2607         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2608                sizeof(struct lpfc_fcf_rec));
2609
2610         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2611                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2612                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2613
2614 error_out:
2615         lpfc_register_fcf(phba);
2616 out:
2617         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2618 }
2619
2620 /**
2621  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2622  * @phba: pointer to lpfc hba data structure.
2623  * @mboxq: pointer to mailbox object.
2624  *
2625  * This is the callback function of read FCF record mailbox command for
2626  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2627  * failover when a new FCF event happened. If the FCF read back is
2628  * valid/available and it passes the connection list check, it updates
2629  * the bmask for the eligible FCF record for roundrobin failover.
2630  */
2631 void
2632 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2633 {
2634         struct fcf_record *new_fcf_record;
2635         uint32_t boot_flag, addr_mode;
2636         uint16_t fcf_index, next_fcf_index;
2637         uint16_t vlan_id;
2638         int rc;
2639
2640         /* If link state is not up, no need to proceed */
2641         if (phba->link_state < LPFC_LINK_UP)
2642                 goto out;
2643
2644         /* If FCF discovery period is over, no need to proceed */
2645         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2646                 goto out;
2647
2648         /* Parse the FCF record from the non-embedded mailbox command */
2649         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2650                                                       &next_fcf_index);
2651         if (!new_fcf_record) {
2652                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2653                                 "2767 Mailbox command READ_FCF_RECORD "
2654                                 "failed to retrieve a FCF record.\n");
2655                 goto out;
2656         }
2657
2658         /* Check the connection list for eligibility */
2659         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2660                                       &addr_mode, &vlan_id);
2661
2662         /* Log the FCF record information if turned on */
2663         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2664                                       next_fcf_index);
2665
2666         if (!rc)
2667                 goto out;
2668
2669         /* Update the eligible FCF record index bmask */
2670         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2671
2672         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2673
2674 out:
2675         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2676 }
2677
2678 /**
2679  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2680  * @phba: pointer to lpfc hba data structure.
2681  * @mboxq: pointer to mailbox data structure.
2682  *
2683  * This function handles completion of init vfi mailbox command.
2684  */
2685 static void
2686 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2687 {
2688         struct lpfc_vport *vport = mboxq->vport;
2689
2690         /*
2691          * VFI not supported on interface type 0, just do the flogi
2692          * Also continue if the VFI is in use - just use the same one.
2693          */
2694         if (mboxq->u.mb.mbxStatus &&
2695             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2696                         LPFC_SLI_INTF_IF_TYPE_0) &&
2697             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2698                 lpfc_printf_vlog(vport, KERN_ERR,
2699                                 LOG_MBOX,
2700                                 "2891 Init VFI mailbox failed 0x%x\n",
2701                                 mboxq->u.mb.mbxStatus);
2702                 mempool_free(mboxq, phba->mbox_mem_pool);
2703                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2704                 return;
2705         }
2706
2707         lpfc_initial_flogi(vport);
2708         mempool_free(mboxq, phba->mbox_mem_pool);
2709         return;
2710 }
2711
2712 /**
2713  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2714  * @vport: pointer to lpfc_vport data structure.
2715  *
2716  * This function issue a init_vfi mailbox command to initialize the VFI and
2717  * VPI for the physical port.
2718  */
2719 void
2720 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2721 {
2722         LPFC_MBOXQ_t *mboxq;
2723         int rc;
2724         struct lpfc_hba *phba = vport->phba;
2725
2726         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2727         if (!mboxq) {
2728                 lpfc_printf_vlog(vport, KERN_ERR,
2729                         LOG_MBOX, "2892 Failed to allocate "
2730                         "init_vfi mailbox\n");
2731                 return;
2732         }
2733         lpfc_init_vfi(mboxq, vport);
2734         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2735         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2736         if (rc == MBX_NOT_FINISHED) {
2737                 lpfc_printf_vlog(vport, KERN_ERR,
2738                         LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2739                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2740         }
2741 }
2742
2743 /**
2744  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2745  * @phba: pointer to lpfc hba data structure.
2746  * @mboxq: pointer to mailbox data structure.
2747  *
2748  * This function handles completion of init vpi mailbox command.
2749  */
2750 void
2751 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2752 {
2753         struct lpfc_vport *vport = mboxq->vport;
2754         struct lpfc_nodelist *ndlp;
2755         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2756
2757         if (mboxq->u.mb.mbxStatus) {
2758                 lpfc_printf_vlog(vport, KERN_ERR,
2759                                 LOG_MBOX,
2760                                 "2609 Init VPI mailbox failed 0x%x\n",
2761                                 mboxq->u.mb.mbxStatus);
2762                 mempool_free(mboxq, phba->mbox_mem_pool);
2763                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2764                 return;
2765         }
2766         spin_lock_irq(shost->host_lock);
2767         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2768         spin_unlock_irq(shost->host_lock);
2769
2770         /* If this port is physical port or FDISC is done, do reg_vpi */
2771         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2772                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2773                         if (!ndlp)
2774                                 lpfc_printf_vlog(vport, KERN_ERR,
2775                                         LOG_DISCOVERY,
2776                                         "2731 Cannot find fabric "
2777                                         "controller node\n");
2778                         else
2779                                 lpfc_register_new_vport(phba, vport, ndlp);
2780                         mempool_free(mboxq, phba->mbox_mem_pool);
2781                         return;
2782         }
2783
2784         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2785                 lpfc_initial_fdisc(vport);
2786         else {
2787                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2788                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2789                                  "2606 No NPIV Fabric support\n");
2790         }
2791         mempool_free(mboxq, phba->mbox_mem_pool);
2792         return;
2793 }
2794
2795 /**
2796  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2797  * @vport: pointer to lpfc_vport data structure.
2798  *
2799  * This function issue a init_vpi mailbox command to initialize
2800  * VPI for the vport.
2801  */
2802 void
2803 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2804 {
2805         LPFC_MBOXQ_t *mboxq;
2806         int rc, vpi;
2807
2808         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2809                 vpi = lpfc_alloc_vpi(vport->phba);
2810                 if (!vpi) {
2811                         lpfc_printf_vlog(vport, KERN_ERR,
2812                                          LOG_MBOX,
2813                                          "3303 Failed to obtain vport vpi\n");
2814                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2815                         return;
2816                 }
2817                 vport->vpi = vpi;
2818         }
2819
2820         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2821         if (!mboxq) {
2822                 lpfc_printf_vlog(vport, KERN_ERR,
2823                         LOG_MBOX, "2607 Failed to allocate "
2824                         "init_vpi mailbox\n");
2825                 return;
2826         }
2827         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2828         mboxq->vport = vport;
2829         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2830         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2831         if (rc == MBX_NOT_FINISHED) {
2832                 lpfc_printf_vlog(vport, KERN_ERR,
2833                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2834                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2835         }
2836 }
2837
2838 /**
2839  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2840  * @phba: pointer to lpfc hba data structure.
2841  *
2842  * This function loops through the list of vports on the @phba and issues an
2843  * FDISC if possible.
2844  */
2845 void
2846 lpfc_start_fdiscs(struct lpfc_hba *phba)
2847 {
2848         struct lpfc_vport **vports;
2849         int i;
2850
2851         vports = lpfc_create_vport_work_array(phba);
2852         if (vports != NULL) {
2853                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2854                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2855                                 continue;
2856                         /* There are no vpi for this vport */
2857                         if (vports[i]->vpi > phba->max_vpi) {
2858                                 lpfc_vport_set_state(vports[i],
2859                                                      FC_VPORT_FAILED);
2860                                 continue;
2861                         }
2862                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2863                                 lpfc_vport_set_state(vports[i],
2864                                                      FC_VPORT_LINKDOWN);
2865                                 continue;
2866                         }
2867                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2868                                 lpfc_issue_init_vpi(vports[i]);
2869                                 continue;
2870                         }
2871                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2872                                 lpfc_initial_fdisc(vports[i]);
2873                         else {
2874                                 lpfc_vport_set_state(vports[i],
2875                                                      FC_VPORT_NO_FABRIC_SUPP);
2876                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2877                                                  LOG_ELS,
2878                                                  "0259 No NPIV "
2879                                                  "Fabric support\n");
2880                         }
2881                 }
2882         }
2883         lpfc_destroy_vport_work_array(phba, vports);
2884 }
2885
2886 void
2887 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2888 {
2889         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2890         struct lpfc_vport *vport = mboxq->vport;
2891         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2892
2893         /*
2894          * VFI not supported for interface type 0, so ignore any mailbox
2895          * error (except VFI in use) and continue with the discovery.
2896          */
2897         if (mboxq->u.mb.mbxStatus &&
2898             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2899                         LPFC_SLI_INTF_IF_TYPE_0) &&
2900             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2901                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2902                          "2018 REG_VFI mbxStatus error x%x "
2903                          "HBA state x%x\n",
2904                          mboxq->u.mb.mbxStatus, vport->port_state);
2905                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2906                         /* FLOGI failed, use loop map to make discovery list */
2907                         lpfc_disc_list_loopmap(vport);
2908                         /* Start discovery */
2909                         lpfc_disc_start(vport);
2910                         goto out_free_mem;
2911                 }
2912                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2913                 goto out_free_mem;
2914         }
2915
2916         /* If the VFI is already registered, there is nothing else to do
2917          * Unless this was a VFI update and we are in PT2PT mode, then
2918          * we should drop through to set the port state to ready.
2919          */
2920         if (vport->fc_flag & FC_VFI_REGISTERED)
2921                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
2922                       vport->fc_flag & FC_PT2PT))
2923                         goto out_free_mem;
2924
2925         /* The VPI is implicitly registered when the VFI is registered */
2926         spin_lock_irq(shost->host_lock);
2927         vport->vpi_state |= LPFC_VPI_REGISTERED;
2928         vport->fc_flag |= FC_VFI_REGISTERED;
2929         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2930         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2931         spin_unlock_irq(shost->host_lock);
2932
2933         /* In case SLI4 FC loopback test, we are ready */
2934         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2935             (phba->link_flag & LS_LOOPBACK_MODE)) {
2936                 phba->link_state = LPFC_HBA_READY;
2937                 goto out_free_mem;
2938         }
2939
2940         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
2941                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
2942                          "alpacnt:%d LinkState:%x topology:%x\n",
2943                          vport->port_state, vport->fc_flag, vport->fc_myDID,
2944                          vport->phba->alpa_map[0],
2945                          phba->link_state, phba->fc_topology);
2946
2947         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2948                 /*
2949                  * For private loop or for NPort pt2pt,
2950                  * just start discovery and we are done.
2951                  */
2952                 if ((vport->fc_flag & FC_PT2PT) ||
2953                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2954                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
2955
2956                         /* Use loop map to make discovery list */
2957                         lpfc_disc_list_loopmap(vport);
2958                         /* Start discovery */
2959                         if (vport->fc_flag & FC_PT2PT)
2960                                 vport->port_state = LPFC_VPORT_READY;
2961                         else
2962                                 lpfc_disc_start(vport);
2963                 } else {
2964                         lpfc_start_fdiscs(phba);
2965                         lpfc_do_scr_ns_plogi(phba, vport);
2966                 }
2967         }
2968
2969 out_free_mem:
2970         mempool_free(mboxq, phba->mbox_mem_pool);
2971         if (dmabuf) {
2972                 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2973                 kfree(dmabuf);
2974         }
2975         return;
2976 }
2977
2978 static void
2979 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2980 {
2981         MAILBOX_t *mb = &pmb->u.mb;
2982         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2983         struct lpfc_vport  *vport = pmb->vport;
2984         struct serv_parm *sp = &vport->fc_sparam;
2985         uint32_t ed_tov;
2986
2987         /* Check for error */
2988         if (mb->mbxStatus) {
2989                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2990                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2991                                  "0319 READ_SPARAM mbxStatus error x%x "
2992                                  "hba state x%x>\n",
2993                                  mb->mbxStatus, vport->port_state);
2994                 lpfc_linkdown(phba);
2995                 goto out;
2996         }
2997
2998         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2999                sizeof (struct serv_parm));
3000
3001         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3002         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
3003                 ed_tov = (ed_tov + 999999) / 1000000;
3004
3005         phba->fc_edtov = ed_tov;
3006         phba->fc_ratov = (2 * ed_tov) / 1000;
3007         if (phba->fc_ratov < FF_DEF_RATOV) {
3008                 /* RA_TOV should be atleast 10sec for initial flogi */
3009                 phba->fc_ratov = FF_DEF_RATOV;
3010         }
3011
3012         lpfc_update_vport_wwn(vport);
3013         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3014                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3015                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3016         }
3017
3018         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3019         kfree(mp);
3020         mempool_free(pmb, phba->mbox_mem_pool);
3021         return;
3022
3023 out:
3024         pmb->context1 = NULL;
3025         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3026         kfree(mp);
3027         lpfc_issue_clear_la(phba, vport);
3028         mempool_free(pmb, phba->mbox_mem_pool);
3029         return;
3030 }
3031
3032 static void
3033 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3034 {
3035         struct lpfc_vport *vport = phba->pport;
3036         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3037         struct Scsi_Host *shost;
3038         int i;
3039         struct lpfc_dmabuf *mp;
3040         int rc;
3041         struct fcf_record *fcf_record;
3042         uint32_t fc_flags = 0;
3043
3044         spin_lock_irq(&phba->hbalock);
3045         phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3046
3047         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3048                 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3049                 case LPFC_LINK_SPEED_1GHZ:
3050                 case LPFC_LINK_SPEED_2GHZ:
3051                 case LPFC_LINK_SPEED_4GHZ:
3052                 case LPFC_LINK_SPEED_8GHZ:
3053                 case LPFC_LINK_SPEED_10GHZ:
3054                 case LPFC_LINK_SPEED_16GHZ:
3055                 case LPFC_LINK_SPEED_32GHZ:
3056                         break;
3057                 default:
3058                         phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3059                         break;
3060                 }
3061         }
3062
3063         if (phba->fc_topology &&
3064             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3065                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3066                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3067                                 phba->fc_topology,
3068                                 bf_get(lpfc_mbx_read_top_topology, la));
3069                 phba->fc_topology_changed = 1;
3070         }
3071
3072         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3073         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3074
3075         shost = lpfc_shost_from_vport(vport);
3076         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3077                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3078
3079                 /* if npiv is enabled and this adapter supports npiv log
3080                  * a message that npiv is not supported in this topology
3081                  */
3082                 if (phba->cfg_enable_npiv && phba->max_vpi)
3083                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3084                                 "1309 Link Up Event npiv not supported in loop "
3085                                 "topology\n");
3086                                 /* Get Loop Map information */
3087                 if (bf_get(lpfc_mbx_read_top_il, la))
3088                         fc_flags |= FC_LBIT;
3089
3090                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3091                 i = la->lilpBde64.tus.f.bdeSize;
3092
3093                 if (i == 0) {
3094                         phba->alpa_map[0] = 0;
3095                 } else {
3096                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3097                                 int numalpa, j, k;
3098                                 union {
3099                                         uint8_t pamap[16];
3100                                         struct {
3101                                                 uint32_t wd1;
3102                                                 uint32_t wd2;
3103                                                 uint32_t wd3;
3104                                                 uint32_t wd4;
3105                                         } pa;
3106                                 } un;
3107                                 numalpa = phba->alpa_map[0];
3108                                 j = 0;
3109                                 while (j < numalpa) {
3110                                         memset(un.pamap, 0, 16);
3111                                         for (k = 1; j < numalpa; k++) {
3112                                                 un.pamap[k - 1] =
3113                                                         phba->alpa_map[j + 1];
3114                                                 j++;
3115                                                 if (k == 16)
3116                                                         break;
3117                                         }
3118                                         /* Link Up Event ALPA map */
3119                                         lpfc_printf_log(phba,
3120                                                         KERN_WARNING,
3121                                                         LOG_LINK_EVENT,
3122                                                         "1304 Link Up Event "
3123                                                         "ALPA map Data: x%x "
3124                                                         "x%x x%x x%x\n",
3125                                                         un.pa.wd1, un.pa.wd2,
3126                                                         un.pa.wd3, un.pa.wd4);
3127                                 }
3128                         }
3129                 }
3130         } else {
3131                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3132                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3133                            (phba->sli_rev >= LPFC_SLI_REV3))
3134                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3135                 }
3136                 vport->fc_myDID = phba->fc_pref_DID;
3137                 fc_flags |= FC_LBIT;
3138         }
3139         spin_unlock_irq(&phba->hbalock);
3140
3141         if (fc_flags) {
3142                 spin_lock_irq(shost->host_lock);
3143                 vport->fc_flag |= fc_flags;
3144                 spin_unlock_irq(shost->host_lock);
3145         }
3146
3147         lpfc_linkup(phba);
3148         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3149         if (!sparam_mbox)
3150                 goto out;
3151
3152         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3153         if (rc) {
3154                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3155                 goto out;
3156         }
3157         sparam_mbox->vport = vport;
3158         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3159         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3160         if (rc == MBX_NOT_FINISHED) {
3161                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
3162                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3163                 kfree(mp);
3164                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3165                 goto out;
3166         }
3167
3168         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3169                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3170                 if (!cfglink_mbox)
3171                         goto out;
3172                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3173                 lpfc_config_link(phba, cfglink_mbox);
3174                 cfglink_mbox->vport = vport;
3175                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3176                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3177                 if (rc == MBX_NOT_FINISHED) {
3178                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3179                         goto out;
3180                 }
3181         } else {
3182                 vport->port_state = LPFC_VPORT_UNKNOWN;
3183                 /*
3184                  * Add the driver's default FCF record at FCF index 0 now. This
3185                  * is phase 1 implementation that support FCF index 0 and driver
3186                  * defaults.
3187                  */
3188                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3189                         fcf_record = kzalloc(sizeof(struct fcf_record),
3190                                         GFP_KERNEL);
3191                         if (unlikely(!fcf_record)) {
3192                                 lpfc_printf_log(phba, KERN_ERR,
3193                                         LOG_MBOX | LOG_SLI,
3194                                         "2554 Could not allocate memory for "
3195                                         "fcf record\n");
3196                                 rc = -ENODEV;
3197                                 goto out;
3198                         }
3199
3200                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3201                                                 LPFC_FCOE_FCF_DEF_INDEX);
3202                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3203                         if (unlikely(rc)) {
3204                                 lpfc_printf_log(phba, KERN_ERR,
3205                                         LOG_MBOX | LOG_SLI,
3206                                         "2013 Could not manually add FCF "
3207                                         "record 0, status %d\n", rc);
3208                                 rc = -ENODEV;
3209                                 kfree(fcf_record);
3210                                 goto out;
3211                         }
3212                         kfree(fcf_record);
3213                 }
3214                 /*
3215                  * The driver is expected to do FIP/FCF. Call the port
3216                  * and get the FCF Table.
3217                  */
3218                 spin_lock_irq(&phba->hbalock);
3219                 if (phba->hba_flag & FCF_TS_INPROG) {
3220                         spin_unlock_irq(&phba->hbalock);
3221                         return;
3222                 }
3223                 /* This is the initial FCF discovery scan */
3224                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3225                 spin_unlock_irq(&phba->hbalock);
3226                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3227                                 "2778 Start FCF table scan at linkup\n");
3228                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3229                                                      LPFC_FCOE_FCF_GET_FIRST);
3230                 if (rc) {
3231                         spin_lock_irq(&phba->hbalock);
3232                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3233                         spin_unlock_irq(&phba->hbalock);
3234                         goto out;
3235                 }
3236                 /* Reset FCF roundrobin bmask for new discovery */
3237                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3238         }
3239
3240         return;
3241 out:
3242         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3243         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3244                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
3245                          vport->port_state, sparam_mbox, cfglink_mbox);
3246         lpfc_issue_clear_la(phba, vport);
3247         return;
3248 }
3249
3250 static void
3251 lpfc_enable_la(struct lpfc_hba *phba)
3252 {
3253         uint32_t control;
3254         struct lpfc_sli *psli = &phba->sli;
3255         spin_lock_irq(&phba->hbalock);
3256         psli->sli_flag |= LPFC_PROCESS_LA;
3257         if (phba->sli_rev <= LPFC_SLI_REV3) {
3258                 control = readl(phba->HCregaddr);
3259                 control |= HC_LAINT_ENA;
3260                 writel(control, phba->HCregaddr);
3261                 readl(phba->HCregaddr); /* flush */
3262         }
3263         spin_unlock_irq(&phba->hbalock);
3264 }
3265
3266 static void
3267 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3268 {
3269         lpfc_linkdown(phba);
3270         lpfc_enable_la(phba);
3271         lpfc_unregister_unused_fcf(phba);
3272         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3273 }
3274
3275
3276 /*
3277  * This routine handles processing a READ_TOPOLOGY mailbox
3278  * command upon completion. It is setup in the LPFC_MBOXQ
3279  * as the completion routine when the command is
3280  * handed off to the SLI layer.
3281  */
3282 void
3283 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3284 {
3285         struct lpfc_vport *vport = pmb->vport;
3286         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3287         struct lpfc_mbx_read_top *la;
3288         MAILBOX_t *mb = &pmb->u.mb;
3289         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3290
3291         /* Unblock ELS traffic */
3292         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
3293         /* Check for error */
3294         if (mb->mbxStatus) {
3295                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3296                                 "1307 READ_LA mbox error x%x state x%x\n",
3297                                 mb->mbxStatus, vport->port_state);
3298                 lpfc_mbx_issue_link_down(phba);
3299                 phba->link_state = LPFC_HBA_ERROR;
3300                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3301         }
3302
3303         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3304
3305         memcpy(&phba->alpa_map[0], mp->virt, 128);
3306
3307         spin_lock_irq(shost->host_lock);
3308         if (bf_get(lpfc_mbx_read_top_pb, la))
3309                 vport->fc_flag |= FC_BYPASSED_MODE;
3310         else
3311                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3312         spin_unlock_irq(shost->host_lock);
3313
3314         if (phba->fc_eventTag <= la->eventTag) {
3315                 phba->fc_stat.LinkMultiEvent++;
3316                 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
3317                         if (phba->fc_eventTag != 0)
3318                                 lpfc_linkdown(phba);
3319         }
3320
3321         phba->fc_eventTag = la->eventTag;
3322         if (phba->sli_rev < LPFC_SLI_REV4) {
3323                 spin_lock_irq(&phba->hbalock);
3324                 if (bf_get(lpfc_mbx_read_top_mm, la))
3325                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3326                 else
3327                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3328                 spin_unlock_irq(&phba->hbalock);
3329         }
3330
3331         phba->link_events++;
3332         if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
3333             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3334                 phba->fc_stat.LinkUp++;
3335                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3336                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3337                                         "1306 Link Up Event in loop back mode "
3338                                         "x%x received Data: x%x x%x x%x x%x\n",
3339                                         la->eventTag, phba->fc_eventTag,
3340                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3341                                                la),
3342                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3343                                         phba->alpa_map[0]);
3344                 } else {
3345                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3346                                         "1303 Link Up Event x%x received "
3347                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3348                                         la->eventTag, phba->fc_eventTag,
3349                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3350                                                la),
3351                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3352                                         phba->alpa_map[0],
3353                                         bf_get(lpfc_mbx_read_top_mm, la),
3354                                         bf_get(lpfc_mbx_read_top_fa, la),
3355                                         phba->wait_4_mlo_maint_flg);
3356                 }
3357                 lpfc_mbx_process_link_up(phba, la);
3358         } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3359                    LPFC_ATT_LINK_DOWN) {
3360                 phba->fc_stat.LinkDown++;
3361                 if (phba->link_flag & LS_LOOPBACK_MODE)
3362                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3363                                 "1308 Link Down Event in loop back mode "
3364                                 "x%x received "
3365                                 "Data: x%x x%x x%x\n",
3366                                 la->eventTag, phba->fc_eventTag,
3367                                 phba->pport->port_state, vport->fc_flag);
3368                 else
3369                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3370                                 "1305 Link Down Event x%x received "
3371                                 "Data: x%x x%x x%x x%x x%x\n",
3372                                 la->eventTag, phba->fc_eventTag,
3373                                 phba->pport->port_state, vport->fc_flag,
3374                                 bf_get(lpfc_mbx_read_top_mm, la),
3375                                 bf_get(lpfc_mbx_read_top_fa, la));
3376                 lpfc_mbx_issue_link_down(phba);
3377         }
3378         if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) &&
3379             ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) {
3380                 if (phba->link_state != LPFC_LINK_DOWN) {
3381                         phba->fc_stat.LinkDown++;
3382                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3383                                 "1312 Link Down Event x%x received "
3384                                 "Data: x%x x%x x%x\n",
3385                                 la->eventTag, phba->fc_eventTag,
3386                                 phba->pport->port_state, vport->fc_flag);
3387                         lpfc_mbx_issue_link_down(phba);
3388                 } else
3389                         lpfc_enable_la(phba);
3390
3391                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3392                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3393                                 "Data: x%x x%x x%x\n",
3394                                 la->eventTag, phba->fc_eventTag,
3395                                 phba->pport->port_state, vport->fc_flag);
3396                 /*
3397                  * The cmnd that triggered this will be waiting for this
3398                  * signal.
3399                  */
3400                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3401                 if (phba->wait_4_mlo_maint_flg) {
3402                         phba->wait_4_mlo_maint_flg = 0;
3403                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3404                 }
3405         }
3406
3407         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3408             bf_get(lpfc_mbx_read_top_fa, la)) {
3409                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3410                         lpfc_issue_clear_la(phba, vport);
3411                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3412                                 "1311 fa %d\n",
3413                                 bf_get(lpfc_mbx_read_top_fa, la));
3414         }
3415
3416 lpfc_mbx_cmpl_read_topology_free_mbuf:
3417         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3418         kfree(mp);
3419         mempool_free(pmb, phba->mbox_mem_pool);
3420         return;
3421 }
3422
3423 /*
3424  * This routine handles processing a REG_LOGIN mailbox
3425  * command upon completion. It is setup in the LPFC_MBOXQ
3426  * as the completion routine when the command is
3427  * handed off to the SLI layer.
3428  */
3429 void
3430 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3431 {
3432         struct lpfc_vport  *vport = pmb->vport;
3433         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3434         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3435         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3436
3437         pmb->context1 = NULL;
3438         pmb->context2 = NULL;
3439
3440         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3441                          "0002 rpi:%x DID:%x flg:%x %d map:%x %p\n",
3442                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3443                          atomic_read(&ndlp->kref.refcount),
3444                          ndlp->nlp_usg_map, ndlp);
3445         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3446                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3447
3448         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3449             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3450                 /* We rcvd a rscn after issuing this
3451                  * mbox reg login, we may have cycled
3452                  * back through the state and be
3453                  * back at reg login state so this
3454                  * mbox needs to be ignored becase
3455                  * there is another reg login in
3456                  * process.
3457                  */
3458                 spin_lock_irq(shost->host_lock);
3459                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3460                 spin_unlock_irq(shost->host_lock);
3461         }
3462
3463         /* Call state machine */
3464         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3465
3466         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3467         kfree(mp);
3468         mempool_free(pmb, phba->mbox_mem_pool);
3469         /* decrement the node reference count held for this callback
3470          * function.
3471          */
3472         lpfc_nlp_put(ndlp);
3473
3474         return;
3475 }
3476
3477 static void
3478 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3479 {
3480         MAILBOX_t *mb = &pmb->u.mb;
3481         struct lpfc_vport *vport = pmb->vport;
3482         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3483
3484         switch (mb->mbxStatus) {
3485         case 0x0011:
3486         case 0x0020:
3487                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3488                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3489                                  mb->mbxStatus);
3490                 break;
3491         /* If VPI is busy, reset the HBA */
3492         case 0x9700:
3493                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3494                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3495                         vport->vpi, mb->mbxStatus);
3496                 if (!(phba->pport->load_flag & FC_UNLOADING))
3497                         lpfc_workq_post_event(phba, NULL, NULL,
3498                                 LPFC_EVT_RESET_HBA);
3499         }
3500         spin_lock_irq(shost->host_lock);
3501         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3502         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3503         spin_unlock_irq(shost->host_lock);
3504         vport->unreg_vpi_cmpl = VPORT_OK;
3505         mempool_free(pmb, phba->mbox_mem_pool);
3506         lpfc_cleanup_vports_rrqs(vport, NULL);
3507         /*
3508          * This shost reference might have been taken at the beginning of
3509          * lpfc_vport_delete()
3510          */
3511         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3512                 scsi_host_put(shost);
3513 }
3514
3515 int
3516 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3517 {
3518         struct lpfc_hba  *phba = vport->phba;
3519         LPFC_MBOXQ_t *mbox;
3520         int rc;
3521
3522         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3523         if (!mbox)
3524                 return 1;
3525
3526         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3527         mbox->vport = vport;
3528         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3529         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3530         if (rc == MBX_NOT_FINISHED) {
3531                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3532                                  "1800 Could not issue unreg_vpi\n");
3533                 mempool_free(mbox, phba->mbox_mem_pool);
3534                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3535                 return rc;
3536         }
3537         return 0;
3538 }
3539
3540 static void
3541 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3542 {
3543         struct lpfc_vport *vport = pmb->vport;
3544         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3545         MAILBOX_t *mb = &pmb->u.mb;
3546
3547         switch (mb->mbxStatus) {
3548         case 0x0011:
3549         case 0x9601:
3550         case 0x9602:
3551                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3552                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3553                                  mb->mbxStatus);
3554                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3555                 spin_lock_irq(shost->host_lock);
3556                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3557                 spin_unlock_irq(shost->host_lock);
3558                 vport->fc_myDID = 0;
3559                 goto out;
3560         }
3561
3562         spin_lock_irq(shost->host_lock);
3563         vport->vpi_state |= LPFC_VPI_REGISTERED;
3564         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3565         spin_unlock_irq(shost->host_lock);
3566         vport->num_disc_nodes = 0;
3567         /* go thru NPR list and issue ELS PLOGIs */
3568         if (vport->fc_npr_cnt)
3569                 lpfc_els_disc_plogi(vport);
3570
3571         if (!vport->num_disc_nodes) {
3572                 spin_lock_irq(shost->host_lock);
3573                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3574                 spin_unlock_irq(shost->host_lock);
3575                 lpfc_can_disctmo(vport);
3576         }
3577         vport->port_state = LPFC_VPORT_READY;
3578
3579 out:
3580         mempool_free(pmb, phba->mbox_mem_pool);
3581         return;
3582 }
3583
3584 /**
3585  * lpfc_create_static_vport - Read HBA config region to create static vports.
3586  * @phba: pointer to lpfc hba data structure.
3587  *
3588  * This routine issue a DUMP mailbox command for config region 22 to get
3589  * the list of static vports to be created. The function create vports
3590  * based on the information returned from the HBA.
3591  **/
3592 void
3593 lpfc_create_static_vport(struct lpfc_hba *phba)
3594 {
3595         LPFC_MBOXQ_t *pmb = NULL;
3596         MAILBOX_t *mb;
3597         struct static_vport_info *vport_info;
3598         int mbx_wait_rc = 0, i;
3599         struct fc_vport_identifiers vport_id;
3600         struct fc_vport *new_fc_vport;
3601         struct Scsi_Host *shost;
3602         struct lpfc_vport *vport;
3603         uint16_t offset = 0;
3604         uint8_t *vport_buff;
3605         struct lpfc_dmabuf *mp;
3606         uint32_t byte_count = 0;
3607
3608         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3609         if (!pmb) {
3610                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3611                                 "0542 lpfc_create_static_vport failed to"
3612                                 " allocate mailbox memory\n");
3613                 return;
3614         }
3615         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3616         mb = &pmb->u.mb;
3617
3618         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3619         if (!vport_info) {
3620                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3621                                 "0543 lpfc_create_static_vport failed to"
3622                                 " allocate vport_info\n");
3623                 mempool_free(pmb, phba->mbox_mem_pool);
3624                 return;
3625         }
3626
3627         vport_buff = (uint8_t *) vport_info;
3628         do {
3629                 /* free dma buffer from previous round */
3630                 if (pmb->context1) {
3631                         mp = (struct lpfc_dmabuf *)pmb->context1;
3632                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3633                         kfree(mp);
3634                 }
3635                 if (lpfc_dump_static_vport(phba, pmb, offset))
3636                         goto out;
3637
3638                 pmb->vport = phba->pport;
3639                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3640                                                         LPFC_MBOX_TMO);
3641
3642                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3643                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3644                                 "0544 lpfc_create_static_vport failed to"
3645                                 " issue dump mailbox command ret 0x%x "
3646                                 "status 0x%x\n",
3647                                 mbx_wait_rc, mb->mbxStatus);
3648                         goto out;
3649                 }
3650
3651                 if (phba->sli_rev == LPFC_SLI_REV4) {
3652                         byte_count = pmb->u.mqe.un.mb_words[5];
3653                         mp = (struct lpfc_dmabuf *)pmb->context1;
3654                         if (byte_count > sizeof(struct static_vport_info) -
3655                                         offset)
3656                                 byte_count = sizeof(struct static_vport_info)
3657                                         - offset;
3658                         memcpy(vport_buff + offset, mp->virt, byte_count);
3659                         offset += byte_count;
3660                 } else {
3661                         if (mb->un.varDmp.word_cnt >
3662                                 sizeof(struct static_vport_info) - offset)
3663                                 mb->un.varDmp.word_cnt =
3664                                         sizeof(struct static_vport_info)
3665                                                 - offset;
3666                         byte_count = mb->un.varDmp.word_cnt;
3667                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3668                                 vport_buff + offset,
3669                                 byte_count);
3670
3671                         offset += byte_count;
3672                 }
3673
3674         } while (byte_count &&
3675                 offset < sizeof(struct static_vport_info));
3676
3677
3678         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3679                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3680                         != VPORT_INFO_REV)) {
3681                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3682                         "0545 lpfc_create_static_vport bad"
3683                         " information header 0x%x 0x%x\n",
3684                         le32_to_cpu(vport_info->signature),
3685                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3686
3687                 goto out;
3688         }
3689
3690         shost = lpfc_shost_from_vport(phba->pport);
3691
3692         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3693                 memset(&vport_id, 0, sizeof(vport_id));
3694                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3695                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3696                 if (!vport_id.port_name || !vport_id.node_name)
3697                         continue;
3698
3699                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3700                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3701                 vport_id.disable = false;
3702                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3703
3704                 if (!new_fc_vport) {
3705                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3706                                 "0546 lpfc_create_static_vport failed to"
3707                                 " create vport\n");
3708                         continue;
3709                 }
3710
3711                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3712                 vport->vport_flag |= STATIC_VPORT;
3713         }
3714
3715 out:
3716         kfree(vport_info);
3717         if (mbx_wait_rc != MBX_TIMEOUT) {
3718                 if (pmb->context1) {
3719                         mp = (struct lpfc_dmabuf *)pmb->context1;
3720                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3721                         kfree(mp);
3722                 }
3723                 mempool_free(pmb, phba->mbox_mem_pool);
3724         }
3725
3726         return;
3727 }
3728
3729 /*
3730  * This routine handles processing a Fabric REG_LOGIN mailbox
3731  * command upon completion. It is setup in the LPFC_MBOXQ
3732  * as the completion routine when the command is
3733  * handed off to the SLI layer.
3734  */
3735 void
3736 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3737 {
3738         struct lpfc_vport *vport = pmb->vport;
3739         MAILBOX_t *mb = &pmb->u.mb;
3740         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3741         struct lpfc_nodelist *ndlp;
3742         struct Scsi_Host *shost;
3743
3744         ndlp = (struct lpfc_nodelist *) pmb->context2;
3745         pmb->context1 = NULL;
3746         pmb->context2 = NULL;
3747
3748         if (mb->mbxStatus) {
3749                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3750                                  "0258 Register Fabric login error: 0x%x\n",
3751                                  mb->mbxStatus);
3752                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3753                 kfree(mp);
3754                 mempool_free(pmb, phba->mbox_mem_pool);
3755
3756                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3757                         /* FLOGI failed, use loop map to make discovery list */
3758                         lpfc_disc_list_loopmap(vport);
3759
3760                         /* Start discovery */
3761                         lpfc_disc_start(vport);
3762                         /* Decrement the reference count to ndlp after the
3763                          * reference to the ndlp are done.
3764                          */
3765                         lpfc_nlp_put(ndlp);
3766                         return;
3767                 }
3768
3769                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3770                 /* Decrement the reference count to ndlp after the reference
3771                  * to the ndlp are done.
3772                  */
3773                 lpfc_nlp_put(ndlp);
3774                 return;
3775         }
3776
3777         if (phba->sli_rev < LPFC_SLI_REV4)
3778                 ndlp->nlp_rpi = mb->un.varWords[0];
3779         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3780         ndlp->nlp_type |= NLP_FABRIC;
3781         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3782
3783         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3784                 /* when physical port receive logo donot start
3785                  * vport discovery */
3786                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3787                         lpfc_start_fdiscs(phba);
3788                 else {
3789                         shost = lpfc_shost_from_vport(vport);
3790                         spin_lock_irq(shost->host_lock);
3791                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3792                         spin_unlock_irq(shost->host_lock);
3793                 }
3794                 lpfc_do_scr_ns_plogi(phba, vport);
3795         }
3796
3797         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3798         kfree(mp);
3799         mempool_free(pmb, phba->mbox_mem_pool);
3800
3801         /* Drop the reference count from the mbox at the end after
3802          * all the current reference to the ndlp have been done.
3803          */
3804         lpfc_nlp_put(ndlp);
3805         return;
3806 }
3807
3808 /*
3809  * This routine handles processing a NameServer REG_LOGIN mailbox
3810  * command upon completion. It is setup in the LPFC_MBOXQ
3811  * as the completion routine when the command is
3812  * handed off to the SLI layer.
3813  */
3814 void
3815 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3816 {
3817         MAILBOX_t *mb = &pmb->u.mb;
3818         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3819         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3820         struct lpfc_vport *vport = pmb->vport;
3821
3822         pmb->context1 = NULL;
3823         pmb->context2 = NULL;
3824
3825         if (mb->mbxStatus) {
3826 out:
3827                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3828                                  "0260 Register NameServer error: 0x%x\n",
3829                                  mb->mbxStatus);
3830                 /* decrement the node reference count held for this
3831                  * callback function.
3832                  */
3833                 lpfc_nlp_put(ndlp);
3834                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3835                 kfree(mp);
3836                 mempool_free(pmb, phba->mbox_mem_pool);
3837
3838                 /* If no other thread is using the ndlp, free it */
3839                 lpfc_nlp_not_used(ndlp);
3840
3841                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3842                         /*
3843                          * RegLogin failed, use loop map to make discovery
3844                          * list
3845                          */
3846                         lpfc_disc_list_loopmap(vport);
3847
3848                         /* Start discovery */
3849                         lpfc_disc_start(vport);
3850                         return;
3851                 }
3852                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3853                 return;
3854         }
3855
3856         if (phba->sli_rev < LPFC_SLI_REV4)
3857                 ndlp->nlp_rpi = mb->un.varWords[0];
3858         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3859         ndlp->nlp_type |= NLP_FABRIC;
3860         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3861         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3862                          "0003 rpi:%x DID:%x flg:%x %d map%x %p\n",
3863                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3864                          atomic_read(&ndlp->kref.refcount),
3865                          ndlp->nlp_usg_map, ndlp);
3866
3867         if (vport->port_state < LPFC_VPORT_READY) {
3868                 /* Link up discovery requires Fabric registration. */
3869                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3870                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3871                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3872                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3873                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0);
3874
3875                 /* Issue SCR just before NameServer GID_FT Query */
3876                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3877         }
3878
3879         vport->fc_ns_retry = 0;
3880         /* Good status, issue CT Request to NameServer */
3881         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3882                 /* Cannot issue NameServer Query, so finish up discovery */
3883                 goto out;
3884         }
3885
3886         /* decrement the node reference count held for this
3887          * callback function.
3888          */
3889         lpfc_nlp_put(ndlp);
3890         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3891         kfree(mp);
3892         mempool_free(pmb, phba->mbox_mem_pool);
3893
3894         return;
3895 }
3896
3897 static void
3898 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3899 {
3900         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3901         struct fc_rport  *rport;
3902         struct lpfc_rport_data *rdata;
3903         struct fc_rport_identifiers rport_ids;
3904         struct lpfc_hba  *phba = vport->phba;
3905
3906         /* Remote port has reappeared. Re-register w/ FC transport */
3907         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3908         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3909         rport_ids.port_id = ndlp->nlp_DID;
3910         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3911
3912         /*
3913          * We leave our node pointer in rport->dd_data when we unregister a
3914          * FCP target port.  But fc_remote_port_add zeros the space to which
3915          * rport->dd_data points.  So, if we're reusing a previously
3916          * registered port, drop the reference that we took the last time we
3917          * registered the port.
3918          */
3919         rport = ndlp->rport;
3920         if (rport) {
3921                 rdata = rport->dd_data;
3922                 /* break the link before dropping the ref */
3923                 ndlp->rport = NULL;
3924                 if (rdata && rdata->pnode == ndlp)
3925                         lpfc_nlp_put(ndlp);
3926                 rdata->pnode = NULL;
3927                 /* drop reference for earlier registeration */
3928                 put_device(&rport->dev);
3929         }
3930
3931         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3932                 "rport add:       did:x%x flg:x%x type x%x",
3933                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3934
3935         /* Don't add the remote port if unloading. */
3936         if (vport->load_flag & FC_UNLOADING)
3937                 return;
3938
3939         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3940         if (!rport || !get_device(&rport->dev)) {
3941                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3942                            "Warning: fc_remote_port_add failed\n");
3943                 return;
3944         }
3945
3946         /* initialize static port data */
3947         rport->maxframe_size = ndlp->nlp_maxframe;
3948         rport->supported_classes = ndlp->nlp_class_sup;
3949         rdata = rport->dd_data;
3950         rdata->pnode = lpfc_nlp_get(ndlp);
3951
3952         if (ndlp->nlp_type & NLP_FCP_TARGET)
3953                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3954         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3955                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3956
3957         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3958                 fc_remote_port_rolechg(rport, rport_ids.roles);
3959
3960         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3961                          "3183 rport register x%06x, rport %p role x%x\n",
3962                          ndlp->nlp_DID, rport, rport_ids.roles);
3963
3964         if ((rport->scsi_target_id != -1) &&
3965             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3966                 ndlp->nlp_sid = rport->scsi_target_id;
3967         }
3968         return;
3969 }
3970
3971 static void
3972 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3973 {
3974         struct fc_rport *rport = ndlp->rport;
3975
3976         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3977                 "rport delete:    did:x%x flg:x%x type x%x",
3978                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3979
3980         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3981                          "3184 rport unregister x%06x, rport %p\n",
3982                          ndlp->nlp_DID, rport);
3983
3984         fc_remote_port_delete(rport);
3985
3986         return;
3987 }
3988
3989 static void
3990 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3991 {
3992         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3993
3994         spin_lock_irq(shost->host_lock);
3995         switch (state) {
3996         case NLP_STE_UNUSED_NODE:
3997                 vport->fc_unused_cnt += count;
3998                 break;
3999         case NLP_STE_PLOGI_ISSUE:
4000                 vport->fc_plogi_cnt += count;
4001                 break;
4002         case NLP_STE_ADISC_ISSUE:
4003                 vport->fc_adisc_cnt += count;
4004                 break;
4005         case NLP_STE_REG_LOGIN_ISSUE:
4006                 vport->fc_reglogin_cnt += count;
4007                 break;
4008         case NLP_STE_PRLI_ISSUE:
4009                 vport->fc_prli_cnt += count;
4010                 break;
4011         case NLP_STE_UNMAPPED_NODE:
4012                 vport->fc_unmap_cnt += count;
4013                 break;
4014         case NLP_STE_MAPPED_NODE:
4015                 vport->fc_map_cnt += count;
4016                 break;
4017         case NLP_STE_NPR_NODE:
4018                 if (vport->fc_npr_cnt == 0 && count == -1)
4019                         vport->fc_npr_cnt = 0;
4020                 else
4021                         vport->fc_npr_cnt += count;
4022                 break;
4023         }
4024         spin_unlock_irq(shost->host_lock);
4025 }
4026
4027 static void
4028 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4029                        int old_state, int new_state)
4030 {
4031         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4032
4033         if (new_state == NLP_STE_UNMAPPED_NODE) {
4034                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4035                 ndlp->nlp_type |= NLP_FC_NODE;
4036         }
4037         if (new_state == NLP_STE_MAPPED_NODE)
4038                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4039         if (new_state == NLP_STE_NPR_NODE)
4040                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4041
4042         /* Transport interface */
4043         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
4044                             old_state == NLP_STE_UNMAPPED_NODE)) {
4045                 vport->phba->nport_event_cnt++;
4046                 lpfc_unregister_remote_port(ndlp);
4047         }
4048
4049         if (new_state ==  NLP_STE_MAPPED_NODE ||
4050             new_state == NLP_STE_UNMAPPED_NODE) {
4051                 vport->phba->nport_event_cnt++;
4052                 /*
4053                  * Tell the fc transport about the port, if we haven't
4054                  * already. If we have, and it's a scsi entity, be
4055                  * sure to unblock any attached scsi devices
4056                  */
4057                 lpfc_register_remote_port(vport, ndlp);
4058         }
4059         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4060                 (vport->stat_data_enabled)) {
4061                 /*
4062                  * A new target is discovered, if there is no buffer for
4063                  * statistical data collection allocate buffer.
4064                  */
4065                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4066                                          sizeof(struct lpfc_scsicmd_bkt),
4067                                          GFP_KERNEL);
4068
4069                 if (!ndlp->lat_data)
4070                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
4071                                 "0286 lpfc_nlp_state_cleanup failed to "
4072                                 "allocate statistical data buffer DID "
4073                                 "0x%x\n", ndlp->nlp_DID);
4074         }
4075         /*
4076          * if we added to Mapped list, but the remote port
4077          * registration failed or assigned a target id outside
4078          * our presentable range - move the node to the
4079          * Unmapped List
4080          */
4081         if (new_state == NLP_STE_MAPPED_NODE &&
4082             (!ndlp->rport ||
4083              ndlp->rport->scsi_target_id == -1 ||
4084              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4085                 spin_lock_irq(shost->host_lock);
4086                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4087                 spin_unlock_irq(shost->host_lock);
4088                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4089         }
4090 }
4091
4092 static char *
4093 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4094 {
4095         static char *states[] = {
4096                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4097                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4098                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4099                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4100                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4101                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4102                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4103                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4104                 [NLP_STE_NPR_NODE] = "NPR",
4105         };
4106
4107         if (state < NLP_STE_MAX_STATE && states[state])
4108                 strlcpy(buffer, states[state], size);
4109         else
4110                 snprintf(buffer, size, "unknown (%d)", state);
4111         return buffer;
4112 }
4113
4114 void
4115 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4116                    int state)
4117 {
4118         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4119         int  old_state = ndlp->nlp_state;
4120         char name1[16], name2[16];
4121
4122         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4123                          "0904 NPort state transition x%06x, %s -> %s\n",
4124                          ndlp->nlp_DID,
4125                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4126                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4127
4128         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4129                 "node statechg    did:x%x old:%d ste:%d",
4130                 ndlp->nlp_DID, old_state, state);
4131
4132         if (old_state == NLP_STE_NPR_NODE &&
4133             state != NLP_STE_NPR_NODE)
4134                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4135         if (old_state == NLP_STE_UNMAPPED_NODE) {
4136                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4137                 ndlp->nlp_type &= ~NLP_FC_NODE;
4138         }
4139
4140         if (list_empty(&ndlp->nlp_listp)) {
4141                 spin_lock_irq(shost->host_lock);
4142                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4143                 spin_unlock_irq(shost->host_lock);
4144         } else if (old_state)
4145                 lpfc_nlp_counters(vport, old_state, -1);
4146
4147         ndlp->nlp_state = state;
4148         lpfc_nlp_counters(vport, state, 1);
4149         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4150 }
4151
4152 void
4153 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4154 {
4155         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4156
4157         if (list_empty(&ndlp->nlp_listp)) {
4158                 spin_lock_irq(shost->host_lock);
4159                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4160                 spin_unlock_irq(shost->host_lock);
4161         }
4162 }
4163
4164 void
4165 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4166 {
4167         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4168
4169         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4170         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4171                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4172         spin_lock_irq(shost->host_lock);
4173         list_del_init(&ndlp->nlp_listp);
4174         spin_unlock_irq(shost->host_lock);
4175         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4176                                 NLP_STE_UNUSED_NODE);
4177 }
4178
4179 static void
4180 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4181 {
4182         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4183         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4184                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4185         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4186                                 NLP_STE_UNUSED_NODE);
4187 }
4188 /**
4189  * lpfc_initialize_node - Initialize all fields of node object
4190  * @vport: Pointer to Virtual Port object.
4191  * @ndlp: Pointer to FC node object.
4192  * @did: FC_ID of the node.
4193  *
4194  * This function is always called when node object need to be initialized.
4195  * It initializes all the fields of the node object. Although the reference
4196  * to phba from @ndlp can be obtained indirectly through it's reference to
4197  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4198  * to the life-span of the @ndlp might go beyond the existence of @vport as
4199  * the final release of ndlp is determined by its reference count. And, the
4200  * operation on @ndlp needs the reference to phba.
4201  **/
4202 static inline void
4203 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4204         uint32_t did)
4205 {
4206         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4207         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4208         init_timer(&ndlp->nlp_delayfunc);
4209         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
4210         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
4211         ndlp->nlp_DID = did;
4212         ndlp->vport = vport;
4213         ndlp->phba = vport->phba;
4214         ndlp->nlp_sid = NLP_NO_SID;
4215         kref_init(&ndlp->kref);
4216         NLP_INT_NODE_ACT(ndlp);
4217         atomic_set(&ndlp->cmd_pending, 0);
4218         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4219 }
4220
4221 struct lpfc_nodelist *
4222 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4223                  int state)
4224 {
4225         struct lpfc_hba *phba = vport->phba;
4226         uint32_t did;
4227         unsigned long flags;
4228         unsigned long *active_rrqs_xri_bitmap = NULL;
4229
4230         if (!ndlp)
4231                 return NULL;
4232
4233         spin_lock_irqsave(&phba->ndlp_lock, flags);
4234         /* The ndlp should not be in memory free mode */
4235         if (NLP_CHK_FREE_REQ(ndlp)) {
4236                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4237                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4238                                 "0277 lpfc_enable_node: ndlp:x%p "
4239                                 "usgmap:x%x refcnt:%d\n",
4240                                 (void *)ndlp, ndlp->nlp_usg_map,
4241                                 atomic_read(&ndlp->kref.refcount));
4242                 return NULL;
4243         }
4244         /* The ndlp should not already be in active mode */
4245         if (NLP_CHK_NODE_ACT(ndlp)) {
4246                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4247                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4248                                 "0278 lpfc_enable_node: ndlp:x%p "
4249                                 "usgmap:x%x refcnt:%d\n",
4250                                 (void *)ndlp, ndlp->nlp_usg_map,
4251                                 atomic_read(&ndlp->kref.refcount));
4252                 return NULL;
4253         }
4254
4255         /* Keep the original DID */
4256         did = ndlp->nlp_DID;
4257         if (phba->sli_rev == LPFC_SLI_REV4)
4258                 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4259
4260         /* re-initialize ndlp except of ndlp linked list pointer */
4261         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4262                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4263         lpfc_initialize_node(vport, ndlp, did);
4264
4265         if (phba->sli_rev == LPFC_SLI_REV4)
4266                 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4267
4268         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4269         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4270                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
4271                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4272                                  "0008 rpi:%x DID:%x flg:%x refcnt:%d "
4273                                  "map:%x %p\n", ndlp->nlp_rpi, ndlp->nlp_DID,
4274                                  ndlp->nlp_flag,
4275                                  atomic_read(&ndlp->kref.refcount),
4276                                  ndlp->nlp_usg_map, ndlp);
4277         }
4278
4279
4280         if (state != NLP_STE_UNUSED_NODE)
4281                 lpfc_nlp_set_state(vport, ndlp, state);
4282
4283         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4284                 "node enable:       did:x%x",
4285                 ndlp->nlp_DID, 0, 0);
4286         return ndlp;
4287 }
4288
4289 void
4290 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4291 {
4292         /*
4293          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4294          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4295          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4296          * until ALL other outstanding threads have completed. We check
4297          * that the ndlp not already in the UNUSED state before we proceed.
4298          */
4299         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4300                 return;
4301         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4302         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4303                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4304                 lpfc_unreg_rpi(vport, ndlp);
4305         }
4306
4307         lpfc_nlp_put(ndlp);
4308         return;
4309 }
4310
4311 /*
4312  * Start / ReStart rescue timer for Discovery / RSCN handling
4313  */
4314 void
4315 lpfc_set_disctmo(struct lpfc_vport *vport)
4316 {
4317         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4318         struct lpfc_hba  *phba = vport->phba;
4319         uint32_t tmo;
4320
4321         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4322                 /* For FAN, timeout should be greater than edtov */
4323                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4324         } else {
4325                 /* Normal discovery timeout should be > than ELS/CT timeout
4326                  * FC spec states we need 3 * ratov for CT requests
4327                  */
4328                 tmo = ((phba->fc_ratov * 3) + 3);
4329         }
4330
4331
4332         if (!timer_pending(&vport->fc_disctmo)) {
4333                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4334                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4335                         tmo, vport->port_state, vport->fc_flag);
4336         }
4337
4338         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4339         spin_lock_irq(shost->host_lock);
4340         vport->fc_flag |= FC_DISC_TMO;
4341         spin_unlock_irq(shost->host_lock);
4342
4343         /* Start Discovery Timer state <hba_state> */
4344         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4345                          "0247 Start Discovery Timer state x%x "
4346                          "Data: x%x x%lx x%x x%x\n",
4347                          vport->port_state, tmo,
4348                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4349                          vport->fc_adisc_cnt);
4350
4351         return;
4352 }
4353
4354 /*
4355  * Cancel rescue timer for Discovery / RSCN handling
4356  */
4357 int
4358 lpfc_can_disctmo(struct lpfc_vport *vport)
4359 {
4360         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4361         unsigned long iflags;
4362
4363         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4364                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
4365                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4366
4367         /* Turn off discovery timer if its running */
4368         if (vport->fc_flag & FC_DISC_TMO) {
4369                 spin_lock_irqsave(shost->host_lock, iflags);
4370                 vport->fc_flag &= ~FC_DISC_TMO;
4371                 spin_unlock_irqrestore(shost->host_lock, iflags);
4372                 del_timer_sync(&vport->fc_disctmo);
4373                 spin_lock_irqsave(&vport->work_port_lock, iflags);
4374                 vport->work_port_events &= ~WORKER_DISC_TMO;
4375                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4376         }
4377
4378         /* Cancel Discovery Timer state <hba_state> */
4379         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4380                          "0248 Cancel Discovery Timer state x%x "
4381                          "Data: x%x x%x x%x\n",
4382                          vport->port_state, vport->fc_flag,
4383                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4384         return 0;
4385 }
4386
4387 /*
4388  * Check specified ring for outstanding IOCB on the SLI queue
4389  * Return true if iocb matches the specified nport
4390  */
4391 int
4392 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4393                     struct lpfc_sli_ring *pring,
4394                     struct lpfc_iocbq *iocb,
4395                     struct lpfc_nodelist *ndlp)
4396 {
4397         struct lpfc_sli *psli = &phba->sli;
4398         IOCB_t *icmd = &iocb->iocb;
4399         struct lpfc_vport    *vport = ndlp->vport;
4400
4401         if (iocb->vport != vport)
4402                 return 0;
4403
4404         if (pring->ringno == LPFC_ELS_RING) {
4405                 switch (icmd->ulpCommand) {
4406                 case CMD_GEN_REQUEST64_CR:
4407                         if (iocb->context_un.ndlp == ndlp)
4408                                 return 1;
4409                 case CMD_ELS_REQUEST64_CR:
4410                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4411                                 return 1;
4412                 case CMD_XMIT_ELS_RSP64_CX:
4413                         if (iocb->context1 == (uint8_t *) ndlp)
4414                                 return 1;
4415                 }
4416         } else if (pring->ringno == psli->extra_ring) {
4417
4418         } else if (pring->ringno == psli->fcp_ring) {
4419                 /* Skip match check if waiting to relogin to FCP target */
4420                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4421                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4422                         return 0;
4423                 }
4424                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4425                         return 1;
4426                 }
4427         } else if (pring->ringno == psli->next_ring) {
4428
4429         }
4430         return 0;
4431 }
4432
4433 /*
4434  * Free resources / clean up outstanding I/Os
4435  * associated with nlp_rpi in the LPFC_NODELIST entry.
4436  */
4437 static int
4438 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4439 {
4440         LIST_HEAD(completions);
4441         struct lpfc_sli *psli;
4442         struct lpfc_sli_ring *pring;
4443         struct lpfc_iocbq *iocb, *next_iocb;
4444         uint32_t i;
4445
4446         lpfc_fabric_abort_nport(ndlp);
4447
4448         /*
4449          * Everything that matches on txcmplq will be returned
4450          * by firmware with a no rpi error.
4451          */
4452         psli = &phba->sli;
4453         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4454                 /* Now process each ring */
4455                 for (i = 0; i < psli->num_rings; i++) {
4456                         pring = &psli->ring[i];
4457
4458                         spin_lock_irq(&phba->hbalock);
4459                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4460                                                  list) {
4461                                 /*
4462                                  * Check to see if iocb matches the nport we are
4463                                  * looking for
4464                                  */
4465                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4466                                                          ndlp))) {
4467                                         /* It matches, so deque and call compl
4468                                            with an error */
4469                                         list_move_tail(&iocb->list,
4470                                                        &completions);
4471                                 }
4472                         }
4473                         spin_unlock_irq(&phba->hbalock);
4474                 }
4475         }
4476
4477         /* Cancel all the IOCBs from the completions list */
4478         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4479                               IOERR_SLI_ABORTED);
4480
4481         return 0;
4482 }
4483
4484 /**
4485  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4486  * @phba: Pointer to HBA context object.
4487  * @pmb: Pointer to mailbox object.
4488  *
4489  * This function will issue an ELS LOGO command after completing
4490  * the UNREG_RPI.
4491  **/
4492 static void
4493 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4494 {
4495         struct lpfc_vport  *vport = pmb->vport;
4496         struct lpfc_nodelist *ndlp;
4497
4498         ndlp = (struct lpfc_nodelist *)(pmb->context1);
4499         if (!ndlp)
4500                 return;
4501         lpfc_issue_els_logo(vport, ndlp, 0);
4502         mempool_free(pmb, phba->mbox_mem_pool);
4503 }
4504
4505 /*
4506  * Free rpi associated with LPFC_NODELIST entry.
4507  * This routine is called from lpfc_freenode(), when we are removing
4508  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4509  * LOGO that completes successfully, and we are waiting to PLOGI back
4510  * to the remote NPort. In addition, it is called after we receive
4511  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4512  * we are waiting to PLOGI back to the remote NPort.
4513  */
4514 int
4515 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4516 {
4517         struct lpfc_hba *phba = vport->phba;
4518         LPFC_MBOXQ_t    *mbox;
4519         int rc, acc_plogi = 1;
4520         uint16_t rpi;
4521
4522         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4523             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4524                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4525                         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4526                                          "3366 RPI x%x needs to be "
4527                                          "unregistered nlp_flag x%x "
4528                                          "did x%x\n",
4529                                          ndlp->nlp_rpi, ndlp->nlp_flag,
4530                                          ndlp->nlp_DID);
4531                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4532                 if (mbox) {
4533                         /* SLI4 ports require the physical rpi value. */
4534                         rpi = ndlp->nlp_rpi;
4535                         if (phba->sli_rev == LPFC_SLI_REV4)
4536                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4537
4538                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4539                         mbox->vport = vport;
4540                         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4541                                 mbox->context1 = ndlp;
4542                                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4543                         } else {
4544                                 if (phba->sli_rev == LPFC_SLI_REV4 &&
4545                                     (!(vport->load_flag & FC_UNLOADING)) &&
4546                                     (bf_get(lpfc_sli_intf_if_type,
4547                                      &phba->sli4_hba.sli_intf) ==
4548                                       LPFC_SLI_INTF_IF_TYPE_2) &&
4549                                     (atomic_read(&ndlp->kref.refcount) > 0)) {
4550                                         mbox->context1 = lpfc_nlp_get(ndlp);
4551                                         mbox->mbox_cmpl =
4552                                                 lpfc_sli4_unreg_rpi_cmpl_clr;
4553                                         /*
4554                                          * accept PLOGIs after unreg_rpi_cmpl
4555                                          */
4556                                         acc_plogi = 0;
4557                                 } else
4558                                         mbox->mbox_cmpl =
4559                                                 lpfc_sli_def_mbox_cmpl;
4560                         }
4561
4562                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4563                         if (rc == MBX_NOT_FINISHED) {
4564                                 mempool_free(mbox, phba->mbox_mem_pool);
4565                                 acc_plogi = 1;
4566                         }
4567                 }
4568                 lpfc_no_rpi(phba, ndlp);
4569
4570                 if (phba->sli_rev != LPFC_SLI_REV4)
4571                         ndlp->nlp_rpi = 0;
4572                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4573                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4574                 if (acc_plogi)
4575                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4576                 return 1;
4577         }
4578         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4579         return 0;
4580 }
4581
4582 /**
4583  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4584  * @phba: pointer to lpfc hba data structure.
4585  *
4586  * This routine is invoked to unregister all the currently registered RPIs
4587  * to the HBA.
4588  **/
4589 void
4590 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4591 {
4592         struct lpfc_vport **vports;
4593         struct lpfc_nodelist *ndlp;
4594         struct Scsi_Host *shost;
4595         int i;
4596
4597         vports = lpfc_create_vport_work_array(phba);
4598         if (!vports) {
4599                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4600                         "2884 Vport array allocation failed \n");
4601                 return;
4602         }
4603         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4604                 shost = lpfc_shost_from_vport(vports[i]);
4605                 spin_lock_irq(shost->host_lock);
4606                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4607                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4608                                 /* The mempool_alloc might sleep */
4609                                 spin_unlock_irq(shost->host_lock);
4610                                 lpfc_unreg_rpi(vports[i], ndlp);
4611                                 spin_lock_irq(shost->host_lock);
4612                         }
4613                 }
4614                 spin_unlock_irq(shost->host_lock);
4615         }
4616         lpfc_destroy_vport_work_array(phba, vports);
4617 }
4618
4619 void
4620 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4621 {
4622         struct lpfc_hba  *phba  = vport->phba;
4623         LPFC_MBOXQ_t     *mbox;
4624         int rc;
4625
4626         if (phba->sli_rev == LPFC_SLI_REV4) {
4627                 lpfc_sli4_unreg_all_rpis(vport);
4628                 return;
4629         }
4630
4631         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4632         if (mbox) {
4633                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
4634                                  mbox);
4635                 mbox->vport = vport;
4636                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4637                 mbox->context1 = NULL;
4638                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4639                 if (rc != MBX_TIMEOUT)
4640                         mempool_free(mbox, phba->mbox_mem_pool);
4641
4642                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4643                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4644                                 "1836 Could not issue "
4645                                 "unreg_login(all_rpis) status %d\n", rc);
4646         }
4647 }
4648
4649 void
4650 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4651 {
4652         struct lpfc_hba  *phba  = vport->phba;
4653         LPFC_MBOXQ_t     *mbox;
4654         int rc;
4655
4656         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4657         if (mbox) {
4658                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
4659                                mbox);
4660                 mbox->vport = vport;
4661                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4662                 mbox->context1 = NULL;
4663                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4664                 if (rc != MBX_TIMEOUT)
4665                         mempool_free(mbox, phba->mbox_mem_pool);
4666
4667                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4668                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4669                                          "1815 Could not issue "
4670                                          "unreg_did (default rpis) status %d\n",
4671                                          rc);
4672         }
4673 }
4674
4675 /*
4676  * Free resources associated with LPFC_NODELIST entry
4677  * so it can be freed.
4678  */
4679 static int
4680 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4681 {
4682         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4683         struct lpfc_hba  *phba = vport->phba;
4684         LPFC_MBOXQ_t *mb, *nextmb;
4685         struct lpfc_dmabuf *mp;
4686
4687         /* Cleanup node for NPort <nlp_DID> */
4688         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4689                          "0900 Cleanup node for NPort x%x "
4690                          "Data: x%x x%x x%x\n",
4691                          ndlp->nlp_DID, ndlp->nlp_flag,
4692                          ndlp->nlp_state, ndlp->nlp_rpi);
4693         if (NLP_CHK_FREE_REQ(ndlp)) {
4694                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4695                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4696                                 "usgmap:x%x refcnt:%d\n",
4697                                 (void *)ndlp, ndlp->nlp_usg_map,
4698                                 atomic_read(&ndlp->kref.refcount));
4699                 lpfc_dequeue_node(vport, ndlp);
4700         } else {
4701                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4702                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4703                                 "usgmap:x%x refcnt:%d\n",
4704                                 (void *)ndlp, ndlp->nlp_usg_map,
4705                                 atomic_read(&ndlp->kref.refcount));
4706                 lpfc_disable_node(vport, ndlp);
4707         }
4708
4709
4710         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
4711
4712         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4713         if ((mb = phba->sli.mbox_active)) {
4714                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4715                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4716                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4717                         mb->context2 = NULL;
4718                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4719                 }
4720         }
4721
4722         spin_lock_irq(&phba->hbalock);
4723         /* Cleanup REG_LOGIN completions which are not yet processed */
4724         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4725                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4726                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
4727                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4728                         continue;
4729
4730                 mb->context2 = NULL;
4731                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4732         }
4733
4734         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4735                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4736                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4737                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4738                         mp = (struct lpfc_dmabuf *) (mb->context1);
4739                         if (mp) {
4740                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4741                                 kfree(mp);
4742                         }
4743                         list_del(&mb->list);
4744                         mempool_free(mb, phba->mbox_mem_pool);
4745                         /* We shall not invoke the lpfc_nlp_put to decrement
4746                          * the ndlp reference count as we are in the process
4747                          * of lpfc_nlp_release.
4748                          */
4749                 }
4750         }
4751         spin_unlock_irq(&phba->hbalock);
4752
4753         lpfc_els_abort(phba, ndlp);
4754
4755         spin_lock_irq(shost->host_lock);
4756         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4757         spin_unlock_irq(shost->host_lock);
4758
4759         ndlp->nlp_last_elscmd = 0;
4760         del_timer_sync(&ndlp->nlp_delayfunc);
4761
4762         list_del_init(&ndlp->els_retry_evt.evt_listp);
4763         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4764         lpfc_cleanup_vports_rrqs(vport, ndlp);
4765         lpfc_unreg_rpi(vport, ndlp);
4766
4767         return 0;
4768 }
4769
4770 /*
4771  * Check to see if we can free the nlp back to the freelist.
4772  * If we are in the middle of using the nlp in the discovery state
4773  * machine, defer the free till we reach the end of the state machine.
4774  */
4775 static void
4776 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4777 {
4778         struct lpfc_hba  *phba = vport->phba;
4779         struct lpfc_rport_data *rdata;
4780         struct fc_rport *rport;
4781         LPFC_MBOXQ_t *mbox;
4782         int rc;
4783
4784         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4785         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4786             !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4787             !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
4788                 /* For this case we need to cleanup the default rpi
4789                  * allocated by the firmware.
4790                  */
4791                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4792                                  "0005 rpi:%x DID:%x flg:%x %d map:%x %p\n",
4793                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4794                                  atomic_read(&ndlp->kref.refcount),
4795                                  ndlp->nlp_usg_map, ndlp);
4796                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4797                         != NULL) {
4798                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4799                             (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
4800                         if (rc) {
4801                                 mempool_free(mbox, phba->mbox_mem_pool);
4802                         }
4803                         else {
4804                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4805                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4806                                 mbox->vport = vport;
4807                                 mbox->context2 = ndlp;
4808                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4809                                 if (rc == MBX_NOT_FINISHED) {
4810                                         mempool_free(mbox, phba->mbox_mem_pool);
4811                                 }
4812                         }
4813                 }
4814         }
4815         lpfc_cleanup_node(vport, ndlp);
4816
4817         /*
4818          * ndlp->rport must be set to NULL before it reaches here
4819          * i.e. break rport/node link before doing lpfc_nlp_put for
4820          * registered rport and then drop the reference of rport.
4821          */
4822         if (ndlp->rport) {
4823                 /*
4824                  * extra lpfc_nlp_put dropped the reference of ndlp
4825                  * for registered rport so need to cleanup rport
4826                  */
4827                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4828                                 "0940 removed node x%p DID x%x "
4829                                 " rport not null %p\n",
4830                                 ndlp, ndlp->nlp_DID, ndlp->rport);
4831                 rport = ndlp->rport;
4832                 rdata = rport->dd_data;
4833                 rdata->pnode = NULL;
4834                 ndlp->rport = NULL;
4835                 put_device(&rport->dev);
4836         }
4837 }
4838
4839 static int
4840 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4841               uint32_t did)
4842 {
4843         D_ID mydid, ndlpdid, matchdid;
4844
4845         if (did == Bcast_DID)
4846                 return 0;
4847
4848         /* First check for Direct match */
4849         if (ndlp->nlp_DID == did)
4850                 return 1;
4851
4852         /* Next check for area/domain identically equals 0 match */
4853         mydid.un.word = vport->fc_myDID;
4854         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4855                 return 0;
4856         }
4857
4858         matchdid.un.word = did;
4859         ndlpdid.un.word = ndlp->nlp_DID;
4860         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4861                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4862                     (mydid.un.b.area == matchdid.un.b.area)) {
4863                         /* This code is supposed to match the ID
4864                          * for a private loop device that is
4865                          * connect to fl_port. But we need to
4866                          * check that the port did not just go
4867                          * from pt2pt to fabric or we could end
4868                          * up matching ndlp->nlp_DID 000001 to
4869                          * fabric DID 0x20101
4870                          */
4871                         if ((ndlpdid.un.b.domain == 0) &&
4872                             (ndlpdid.un.b.area == 0)) {
4873                                 if (ndlpdid.un.b.id &&
4874                                     vport->phba->fc_topology ==
4875                                     LPFC_TOPOLOGY_LOOP)
4876                                         return 1;
4877                         }
4878                         return 0;
4879                 }
4880
4881                 matchdid.un.word = ndlp->nlp_DID;
4882                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4883                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4884                         if ((matchdid.un.b.domain == 0) &&
4885                             (matchdid.un.b.area == 0)) {
4886                                 if (matchdid.un.b.id)
4887                                         return 1;
4888                         }
4889                 }
4890         }
4891         return 0;
4892 }
4893
4894 /* Search for a nodelist entry */
4895 static struct lpfc_nodelist *
4896 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4897 {
4898         struct lpfc_nodelist *ndlp;
4899         uint32_t data1;
4900
4901         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4902                 if (lpfc_matchdid(vport, ndlp, did)) {
4903                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4904                                  ((uint32_t) ndlp->nlp_xri << 16) |
4905                                  ((uint32_t) ndlp->nlp_type << 8) |
4906                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4907                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4908                                          "0929 FIND node DID "
4909                                          "Data: x%p x%x x%x x%x %p\n",
4910                                          ndlp, ndlp->nlp_DID,
4911                                          ndlp->nlp_flag, data1,
4912                                          ndlp->active_rrqs_xri_bitmap);
4913                         return ndlp;
4914                 }
4915         }
4916
4917         /* FIND node did <did> NOT FOUND */
4918         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4919                          "0932 FIND node did x%x NOT FOUND.\n", did);
4920         return NULL;
4921 }
4922
4923 struct lpfc_nodelist *
4924 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4925 {
4926         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4927         struct lpfc_nodelist *ndlp;
4928         unsigned long iflags;
4929
4930         spin_lock_irqsave(shost->host_lock, iflags);
4931         ndlp = __lpfc_findnode_did(vport, did);
4932         spin_unlock_irqrestore(shost->host_lock, iflags);
4933         return ndlp;
4934 }
4935
4936 struct lpfc_nodelist *
4937 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4938 {
4939         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4940         struct lpfc_nodelist *ndlp;
4941
4942         ndlp = lpfc_findnode_did(vport, did);
4943         if (!ndlp) {
4944                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4945                     lpfc_rscn_payload_check(vport, did) == 0)
4946                         return NULL;
4947                 ndlp = (struct lpfc_nodelist *)
4948                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4949                 if (!ndlp)
4950                         return NULL;
4951                 lpfc_nlp_init(vport, ndlp, did);
4952                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4953                 spin_lock_irq(shost->host_lock);
4954                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4955                 spin_unlock_irq(shost->host_lock);
4956                 return ndlp;
4957         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4958                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4959                 if (!ndlp)
4960                         return NULL;
4961                 spin_lock_irq(shost->host_lock);
4962                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4963                 spin_unlock_irq(shost->host_lock);
4964                 return ndlp;
4965         }
4966
4967         if ((vport->fc_flag & FC_RSCN_MODE) &&
4968             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4969                 if (lpfc_rscn_payload_check(vport, did)) {
4970                         /* If we've already received a PLOGI from this NPort
4971                          * we don't need to try to discover it again.
4972                          */
4973                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4974                                 return NULL;
4975
4976                         /* Since this node is marked for discovery,
4977                          * delay timeout is not needed.
4978                          */
4979                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4980                         spin_lock_irq(shost->host_lock);
4981                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4982                         spin_unlock_irq(shost->host_lock);
4983                 } else
4984                         ndlp = NULL;
4985         } else {
4986                 /* If we've already received a PLOGI from this NPort,
4987                  * or we are already in the process of discovery on it,
4988                  * we don't need to try to discover it again.
4989                  */
4990                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4991                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4992                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4993                         return NULL;
4994                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4995                 spin_lock_irq(shost->host_lock);
4996                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4997                 spin_unlock_irq(shost->host_lock);
4998         }
4999         return ndlp;
5000 }
5001
5002 /* Build a list of nodes to discover based on the loopmap */
5003 void
5004 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5005 {
5006         struct lpfc_hba  *phba = vport->phba;
5007         int j;
5008         uint32_t alpa, index;
5009
5010         if (!lpfc_is_link_up(phba))
5011                 return;
5012
5013         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5014                 return;
5015
5016         /* Check for loop map present or not */
5017         if (phba->alpa_map[0]) {
5018                 for (j = 1; j <= phba->alpa_map[0]; j++) {
5019                         alpa = phba->alpa_map[j];
5020                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5021                                 continue;
5022                         lpfc_setup_disc_node(vport, alpa);
5023                 }
5024         } else {
5025                 /* No alpamap, so try all alpa's */
5026                 for (j = 0; j < FC_MAXLOOP; j++) {
5027                         /* If cfg_scan_down is set, start from highest
5028                          * ALPA (0xef) to lowest (0x1).
5029                          */
5030                         if (vport->cfg_scan_down)
5031                                 index = j;
5032                         else
5033                                 index = FC_MAXLOOP - j - 1;
5034                         alpa = lpfcAlpaArray[index];
5035                         if ((vport->fc_myDID & 0xff) == alpa)
5036                                 continue;
5037                         lpfc_setup_disc_node(vport, alpa);
5038                 }
5039         }
5040         return;
5041 }
5042
5043 void
5044 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5045 {
5046         LPFC_MBOXQ_t *mbox;
5047         struct lpfc_sli *psli = &phba->sli;
5048         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
5049         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
5050         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
5051         int  rc;
5052
5053         /*
5054          * if it's not a physical port or if we already send
5055          * clear_la then don't send it.
5056          */
5057         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5058             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5059                 (phba->sli_rev == LPFC_SLI_REV4))
5060                 return;
5061
5062                         /* Link up discovery */
5063         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5064                 phba->link_state = LPFC_CLEAR_LA;
5065                 lpfc_clear_la(phba, mbox);
5066                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5067                 mbox->vport = vport;
5068                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5069                 if (rc == MBX_NOT_FINISHED) {
5070                         mempool_free(mbox, phba->mbox_mem_pool);
5071                         lpfc_disc_flush_list(vport);
5072                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5073                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5074                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5075                         phba->link_state = LPFC_HBA_ERROR;
5076                 }
5077         }
5078 }
5079
5080 /* Reg_vpi to tell firmware to resume normal operations */
5081 void
5082 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5083 {
5084         LPFC_MBOXQ_t *regvpimbox;
5085
5086         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5087         if (regvpimbox) {
5088                 lpfc_reg_vpi(vport, regvpimbox);
5089                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5090                 regvpimbox->vport = vport;
5091                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5092                                         == MBX_NOT_FINISHED) {
5093                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5094                 }
5095         }
5096 }
5097
5098 /* Start Link up / RSCN discovery on NPR nodes */
5099 void
5100 lpfc_disc_start(struct lpfc_vport *vport)
5101 {
5102         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5103         struct lpfc_hba  *phba = vport->phba;
5104         uint32_t num_sent;
5105         uint32_t clear_la_pending;
5106
5107         if (!lpfc_is_link_up(phba)) {
5108                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5109                                  "3315 Link is not up %x\n",
5110                                  phba->link_state);
5111                 return;
5112         }
5113
5114         if (phba->link_state == LPFC_CLEAR_LA)
5115                 clear_la_pending = 1;
5116         else
5117                 clear_la_pending = 0;
5118
5119         if (vport->port_state < LPFC_VPORT_READY)
5120                 vport->port_state = LPFC_DISC_AUTH;
5121
5122         lpfc_set_disctmo(vport);
5123
5124         vport->fc_prevDID = vport->fc_myDID;
5125         vport->num_disc_nodes = 0;
5126
5127         /* Start Discovery state <hba_state> */
5128         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5129                          "0202 Start Discovery hba state x%x "
5130                          "Data: x%x x%x x%x\n",
5131                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5132                          vport->fc_adisc_cnt);
5133
5134         /* First do ADISCs - if any */
5135         num_sent = lpfc_els_disc_adisc(vport);
5136
5137         if (num_sent)
5138                 return;
5139
5140         /* Register the VPI for SLI3, NPIV only. */
5141         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5142             !(vport->fc_flag & FC_PT2PT) &&
5143             !(vport->fc_flag & FC_RSCN_MODE) &&
5144             (phba->sli_rev < LPFC_SLI_REV4)) {
5145                 lpfc_issue_clear_la(phba, vport);
5146                 lpfc_issue_reg_vpi(phba, vport);
5147                 return;
5148         }
5149
5150         /*
5151          * For SLI2, we need to set port_state to READY and continue
5152          * discovery.
5153          */
5154         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5155                 /* If we get here, there is nothing to ADISC */
5156                 lpfc_issue_clear_la(phba, vport);
5157
5158                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5159                         vport->num_disc_nodes = 0;
5160                         /* go thru NPR nodes and issue ELS PLOGIs */
5161                         if (vport->fc_npr_cnt)
5162                                 lpfc_els_disc_plogi(vport);
5163
5164                         if (!vport->num_disc_nodes) {
5165                                 spin_lock_irq(shost->host_lock);
5166                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5167                                 spin_unlock_irq(shost->host_lock);
5168                                 lpfc_can_disctmo(vport);
5169                         }
5170                 }
5171                 vport->port_state = LPFC_VPORT_READY;
5172         } else {
5173                 /* Next do PLOGIs - if any */
5174                 num_sent = lpfc_els_disc_plogi(vport);
5175
5176                 if (num_sent)
5177                         return;
5178
5179                 if (vport->fc_flag & FC_RSCN_MODE) {
5180                         /* Check to see if more RSCNs came in while we
5181                          * were processing this one.
5182                          */
5183                         if ((vport->fc_rscn_id_cnt == 0) &&
5184                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5185                                 spin_lock_irq(shost->host_lock);
5186                                 vport->fc_flag &= ~FC_RSCN_MODE;
5187                                 spin_unlock_irq(shost->host_lock);
5188                                 lpfc_can_disctmo(vport);
5189                         } else
5190                                 lpfc_els_handle_rscn(vport);
5191                 }
5192         }
5193         return;
5194 }
5195
5196 /*
5197  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5198  *  ring the match the sppecified nodelist.
5199  */
5200 static void
5201 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5202 {
5203         LIST_HEAD(completions);
5204         struct lpfc_sli *psli;
5205         IOCB_t     *icmd;
5206         struct lpfc_iocbq    *iocb, *next_iocb;
5207         struct lpfc_sli_ring *pring;
5208
5209         psli = &phba->sli;
5210         pring = &psli->ring[LPFC_ELS_RING];
5211
5212         /* Error matching iocb on txq or txcmplq
5213          * First check the txq.
5214          */
5215         spin_lock_irq(&phba->hbalock);
5216         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5217                 if (iocb->context1 != ndlp) {
5218                         continue;
5219                 }
5220                 icmd = &iocb->iocb;
5221                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5222                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5223
5224                         list_move_tail(&iocb->list, &completions);
5225                 }
5226         }
5227
5228         /* Next check the txcmplq */
5229         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5230                 if (iocb->context1 != ndlp) {
5231                         continue;
5232                 }
5233                 icmd = &iocb->iocb;
5234                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5235                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5236                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5237                 }
5238         }
5239         spin_unlock_irq(&phba->hbalock);
5240
5241         /* Cancel all the IOCBs from the completions list */
5242         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5243                               IOERR_SLI_ABORTED);
5244 }
5245
5246 static void
5247 lpfc_disc_flush_list(struct lpfc_vport *vport)
5248 {
5249         struct lpfc_nodelist *ndlp, *next_ndlp;
5250         struct lpfc_hba *phba = vport->phba;
5251
5252         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5253                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5254                                          nlp_listp) {
5255                         if (!NLP_CHK_NODE_ACT(ndlp))
5256                                 continue;
5257                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5258                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5259                                 lpfc_free_tx(phba, ndlp);
5260                         }
5261                 }
5262         }
5263 }
5264
5265 void
5266 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5267 {
5268         lpfc_els_flush_rscn(vport);
5269         lpfc_els_flush_cmd(vport);
5270         lpfc_disc_flush_list(vport);
5271 }
5272
5273 /*****************************************************************************/
5274 /*
5275  * NAME:     lpfc_disc_timeout
5276  *
5277  * FUNCTION: Fibre Channel driver discovery timeout routine.
5278  *
5279  * EXECUTION ENVIRONMENT: interrupt only
5280  *
5281  * CALLED FROM:
5282  *      Timer function
5283  *
5284  * RETURNS:
5285  *      none
5286  */
5287 /*****************************************************************************/
5288 void
5289 lpfc_disc_timeout(unsigned long ptr)
5290 {
5291         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5292         struct lpfc_hba   *phba = vport->phba;
5293         uint32_t tmo_posted;
5294         unsigned long flags = 0;
5295
5296         if (unlikely(!phba))
5297                 return;
5298
5299         spin_lock_irqsave(&vport->work_port_lock, flags);
5300         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5301         if (!tmo_posted)
5302                 vport->work_port_events |= WORKER_DISC_TMO;
5303         spin_unlock_irqrestore(&vport->work_port_lock, flags);
5304
5305         if (!tmo_posted)
5306                 lpfc_worker_wake_up(phba);
5307         return;
5308 }
5309
5310 static void
5311 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5312 {
5313         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5314         struct lpfc_hba  *phba = vport->phba;
5315         struct lpfc_sli  *psli = &phba->sli;
5316         struct lpfc_nodelist *ndlp, *next_ndlp;
5317         LPFC_MBOXQ_t *initlinkmbox;
5318         int rc, clrlaerr = 0;
5319
5320         if (!(vport->fc_flag & FC_DISC_TMO))
5321                 return;
5322
5323         spin_lock_irq(shost->host_lock);
5324         vport->fc_flag &= ~FC_DISC_TMO;
5325         spin_unlock_irq(shost->host_lock);
5326
5327         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5328                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
5329                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5330
5331         switch (vport->port_state) {
5332
5333         case LPFC_LOCAL_CFG_LINK:
5334         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
5335          * FAN
5336          */
5337                                 /* FAN timeout */
5338                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5339                                  "0221 FAN timeout\n");
5340                 /* Start discovery by sending FLOGI, clean up old rpis */
5341                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5342                                          nlp_listp) {
5343                         if (!NLP_CHK_NODE_ACT(ndlp))
5344                                 continue;
5345                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5346                                 continue;
5347                         if (ndlp->nlp_type & NLP_FABRIC) {
5348                                 /* Clean up the ndlp on Fabric connections */
5349                                 lpfc_drop_node(vport, ndlp);
5350
5351                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5352                                 /* Fail outstanding IO now since device
5353                                  * is marked for PLOGI.
5354                                  */
5355                                 lpfc_unreg_rpi(vport, ndlp);
5356                         }
5357                 }
5358                 if (vport->port_state != LPFC_FLOGI) {
5359                         if (phba->sli_rev <= LPFC_SLI_REV3)
5360                                 lpfc_initial_flogi(vport);
5361                         else
5362                                 lpfc_issue_init_vfi(vport);
5363                         return;
5364                 }
5365                 break;
5366
5367         case LPFC_FDISC:
5368         case LPFC_FLOGI:
5369         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5370                 /* Initial FLOGI timeout */
5371                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5372                                  "0222 Initial %s timeout\n",
5373                                  vport->vpi ? "FDISC" : "FLOGI");
5374
5375                 /* Assume no Fabric and go on with discovery.
5376                  * Check for outstanding ELS FLOGI to abort.
5377                  */
5378
5379                 /* FLOGI failed, so just use loop map to make discovery list */
5380                 lpfc_disc_list_loopmap(vport);
5381
5382                 /* Start discovery */
5383                 lpfc_disc_start(vport);
5384                 break;
5385
5386         case LPFC_FABRIC_CFG_LINK:
5387         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5388            NameServer login */
5389                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5390                                  "0223 Timeout while waiting for "
5391                                  "NameServer login\n");
5392                 /* Next look for NameServer ndlp */
5393                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5394                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5395                         lpfc_els_abort(phba, ndlp);
5396
5397                 /* ReStart discovery */
5398                 goto restart_disc;
5399
5400         case LPFC_NS_QRY:
5401         /* Check for wait for NameServer Rsp timeout */
5402                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5403                                  "0224 NameServer Query timeout "
5404                                  "Data: x%x x%x\n",
5405                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5406
5407                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5408                         /* Try it one more time */
5409                         vport->fc_ns_retry++;
5410                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
5411                                          vport->fc_ns_retry, 0);
5412                         if (rc == 0)
5413                                 break;
5414                 }
5415                 vport->fc_ns_retry = 0;
5416
5417 restart_disc:
5418                 /*
5419                  * Discovery is over.
5420                  * set port_state to PORT_READY if SLI2.
5421                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5422                  */
5423                 if (phba->sli_rev < LPFC_SLI_REV4) {
5424                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5425                                 lpfc_issue_reg_vpi(phba, vport);
5426                         else  {
5427                                 lpfc_issue_clear_la(phba, vport);
5428                                 vport->port_state = LPFC_VPORT_READY;
5429                         }
5430                 }
5431
5432                 /* Setup and issue mailbox INITIALIZE LINK command */
5433                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5434                 if (!initlinkmbox) {
5435                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5436                                          "0206 Device Discovery "
5437                                          "completion error\n");
5438                         phba->link_state = LPFC_HBA_ERROR;
5439                         break;
5440                 }
5441
5442                 lpfc_linkdown(phba);
5443                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5444                                phba->cfg_link_speed);
5445                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5446                 initlinkmbox->vport = vport;
5447                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5448                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5449                 lpfc_set_loopback_flag(phba);
5450                 if (rc == MBX_NOT_FINISHED)
5451                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
5452
5453                 break;
5454
5455         case LPFC_DISC_AUTH:
5456         /* Node Authentication timeout */
5457                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5458                                  "0227 Node Authentication timeout\n");
5459                 lpfc_disc_flush_list(vport);
5460
5461                 /*
5462                  * set port_state to PORT_READY if SLI2.
5463                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5464                  */
5465                 if (phba->sli_rev < LPFC_SLI_REV4) {
5466                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5467                                 lpfc_issue_reg_vpi(phba, vport);
5468                         else  { /* NPIV Not enabled */
5469                                 lpfc_issue_clear_la(phba, vport);
5470                                 vport->port_state = LPFC_VPORT_READY;
5471                         }
5472                 }
5473                 break;
5474
5475         case LPFC_VPORT_READY:
5476                 if (vport->fc_flag & FC_RSCN_MODE) {
5477                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5478                                          "0231 RSCN timeout Data: x%x "
5479                                          "x%x\n",
5480                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5481
5482                         /* Cleanup any outstanding ELS commands */
5483                         lpfc_els_flush_cmd(vport);
5484
5485                         lpfc_els_flush_rscn(vport);
5486                         lpfc_disc_flush_list(vport);
5487                 }
5488                 break;
5489
5490         default:
5491                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5492                                  "0273 Unexpected discovery timeout, "
5493                                  "vport State x%x\n", vport->port_state);
5494                 break;
5495         }
5496
5497         switch (phba->link_state) {
5498         case LPFC_CLEAR_LA:
5499                                 /* CLEAR LA timeout */
5500                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5501                                  "0228 CLEAR LA timeout\n");
5502                 clrlaerr = 1;
5503                 break;
5504
5505         case LPFC_LINK_UP:
5506                 lpfc_issue_clear_la(phba, vport);
5507                 /* Drop thru */
5508         case LPFC_LINK_UNKNOWN:
5509         case LPFC_WARM_START:
5510         case LPFC_INIT_START:
5511         case LPFC_INIT_MBX_CMDS:
5512         case LPFC_LINK_DOWN:
5513         case LPFC_HBA_ERROR:
5514                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5515                                  "0230 Unexpected timeout, hba link "
5516                                  "state x%x\n", phba->link_state);
5517                 clrlaerr = 1;
5518                 break;
5519
5520         case LPFC_HBA_READY:
5521                 break;
5522         }
5523
5524         if (clrlaerr) {
5525                 lpfc_disc_flush_list(vport);
5526                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5527                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5528                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5529                 vport->port_state = LPFC_VPORT_READY;
5530         }
5531
5532         return;
5533 }
5534
5535 /*
5536  * This routine handles processing a NameServer REG_LOGIN mailbox
5537  * command upon completion. It is setup in the LPFC_MBOXQ
5538  * as the completion routine when the command is
5539  * handed off to the SLI layer.
5540  */
5541 void
5542 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5543 {
5544         MAILBOX_t *mb = &pmb->u.mb;
5545         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5546         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5547         struct lpfc_vport    *vport = pmb->vport;
5548
5549         pmb->context1 = NULL;
5550         pmb->context2 = NULL;
5551
5552         if (phba->sli_rev < LPFC_SLI_REV4)
5553                 ndlp->nlp_rpi = mb->un.varWords[0];
5554         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5555         ndlp->nlp_type |= NLP_FABRIC;
5556         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5557         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5558                          "0004 rpi:%x DID:%x flg:%x %d map:%x %p\n",
5559                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5560                          atomic_read(&ndlp->kref.refcount),
5561                          ndlp->nlp_usg_map, ndlp);
5562         /*
5563          * Start issuing Fabric-Device Management Interface (FDMI) command to
5564          * 0xfffffa (FDMI well known port).
5565          * DHBA -> DPRT -> RHBA -> RPA  (physical port)
5566          * DPRT -> RPRT (vports)
5567          */
5568         if (vport->port_type == LPFC_PHYSICAL_PORT)
5569                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
5570         else
5571                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
5572
5573
5574         /* decrement the node reference count held for this callback
5575          * function.
5576          */
5577         lpfc_nlp_put(ndlp);
5578         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5579         kfree(mp);
5580         mempool_free(pmb, phba->mbox_mem_pool);
5581
5582         return;
5583 }
5584
5585 static int
5586 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5587 {
5588         uint16_t *rpi = param;
5589
5590         /* check for active node */
5591         if (!NLP_CHK_NODE_ACT(ndlp))
5592                 return 0;
5593
5594         return ndlp->nlp_rpi == *rpi;
5595 }
5596
5597 static int
5598 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5599 {
5600         return memcmp(&ndlp->nlp_portname, param,
5601                       sizeof(ndlp->nlp_portname)) == 0;
5602 }
5603
5604 static struct lpfc_nodelist *
5605 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5606 {
5607         struct lpfc_nodelist *ndlp;
5608
5609         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5610                 if (filter(ndlp, param)) {
5611                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5612                                          "3185 FIND node filter %p DID "
5613                                          "Data: x%p x%x x%x\n",
5614                                          filter, ndlp, ndlp->nlp_DID,
5615                                          ndlp->nlp_flag);
5616                         return ndlp;
5617                 }
5618         }
5619         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5620                          "3186 FIND node filter %p NOT FOUND.\n", filter);
5621         return NULL;
5622 }
5623
5624 /*
5625  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5626  * returns the node list element pointer else return NULL.
5627  */
5628 struct lpfc_nodelist *
5629 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5630 {
5631         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5632 }
5633
5634 /*
5635  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5636  * returns the node element list pointer else return NULL.
5637  */
5638 struct lpfc_nodelist *
5639 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5640 {
5641         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5642         struct lpfc_nodelist *ndlp;
5643
5644         spin_lock_irq(shost->host_lock);
5645         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5646         spin_unlock_irq(shost->host_lock);
5647         return ndlp;
5648 }
5649
5650 /*
5651  * This routine looks up the ndlp lists for the given RPI. If the rpi
5652  * is found, the routine returns the node element list pointer else
5653  * return NULL.
5654  */
5655 struct lpfc_nodelist *
5656 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5657 {
5658         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5659         struct lpfc_nodelist *ndlp;
5660
5661         spin_lock_irq(shost->host_lock);
5662         ndlp = __lpfc_findnode_rpi(vport, rpi);
5663         spin_unlock_irq(shost->host_lock);
5664         return ndlp;
5665 }
5666
5667 /**
5668  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5669  * @phba: pointer to lpfc hba data structure.
5670  * @vpi: the physical host virtual N_Port identifier.
5671  *
5672  * This routine finds a vport on a HBA (referred by @phba) through a
5673  * @vpi. The function walks the HBA's vport list and returns the address
5674  * of the vport with the matching @vpi.
5675  *
5676  * Return code
5677  *    NULL - No vport with the matching @vpi found
5678  *    Otherwise - Address to the vport with the matching @vpi.
5679  **/
5680 struct lpfc_vport *
5681 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5682 {
5683         struct lpfc_vport *vport;
5684         unsigned long flags;
5685         int i = 0;
5686
5687         /* The physical ports are always vpi 0 - translate is unnecessary. */
5688         if (vpi > 0) {
5689                 /*
5690                  * Translate the physical vpi to the logical vpi.  The
5691                  * vport stores the logical vpi.
5692                  */
5693                 for (i = 0; i < phba->max_vpi; i++) {
5694                         if (vpi == phba->vpi_ids[i])
5695                                 break;
5696                 }
5697
5698                 if (i >= phba->max_vpi) {
5699                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
5700                                          "2936 Could not find Vport mapped "
5701                                          "to vpi %d\n", vpi);
5702                         return NULL;
5703                 }
5704         }
5705
5706         spin_lock_irqsave(&phba->hbalock, flags);
5707         list_for_each_entry(vport, &phba->port_list, listentry) {
5708                 if (vport->vpi == i) {
5709                         spin_unlock_irqrestore(&phba->hbalock, flags);
5710                         return vport;
5711                 }
5712         }
5713         spin_unlock_irqrestore(&phba->hbalock, flags);
5714         return NULL;
5715 }
5716
5717 void
5718 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5719               uint32_t did)
5720 {
5721         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5722
5723         lpfc_initialize_node(vport, ndlp, did);
5724         INIT_LIST_HEAD(&ndlp->nlp_listp);
5725         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
5726                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
5727                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5728                                  "0007 rpi:%x DID:%x flg:%x refcnt:%d "
5729                                  "map:%x %p\n", ndlp->nlp_rpi, ndlp->nlp_DID,
5730                                  ndlp->nlp_flag,
5731                                  atomic_read(&ndlp->kref.refcount),
5732                                  ndlp->nlp_usg_map, ndlp);
5733
5734                 ndlp->active_rrqs_xri_bitmap =
5735                                 mempool_alloc(vport->phba->active_rrq_pool,
5736                                               GFP_KERNEL);
5737                 if (ndlp->active_rrqs_xri_bitmap)
5738                         memset(ndlp->active_rrqs_xri_bitmap, 0,
5739                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
5740         }
5741
5742
5743
5744         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5745                 "node init:       did:x%x",
5746                 ndlp->nlp_DID, 0, 0);
5747
5748         return;
5749 }
5750
5751 /* This routine releases all resources associated with a specifc NPort's ndlp
5752  * and mempool_free's the nodelist.
5753  */
5754 static void
5755 lpfc_nlp_release(struct kref *kref)
5756 {
5757         struct lpfc_hba *phba;
5758         unsigned long flags;
5759         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5760                                                   kref);
5761
5762         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5763                 "node release:    did:x%x flg:x%x type:x%x",
5764                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5765
5766         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5767                         "0279 lpfc_nlp_release: ndlp:x%p did %x "
5768                         "usgmap:x%x refcnt:%d rpi:%x\n",
5769                         (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
5770                         atomic_read(&ndlp->kref.refcount), ndlp->nlp_rpi);
5771
5772         /* remove ndlp from action. */
5773         lpfc_nlp_remove(ndlp->vport, ndlp);
5774
5775         /* clear the ndlp active flag for all release cases */
5776         phba = ndlp->phba;
5777         spin_lock_irqsave(&phba->ndlp_lock, flags);
5778         NLP_CLR_NODE_ACT(ndlp);
5779         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5780         if (phba->sli_rev == LPFC_SLI_REV4)
5781                 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5782
5783         /* free ndlp memory for final ndlp release */
5784         if (NLP_CHK_FREE_REQ(ndlp)) {
5785                 kfree(ndlp->lat_data);
5786                 if (phba->sli_rev == LPFC_SLI_REV4)
5787                         mempool_free(ndlp->active_rrqs_xri_bitmap,
5788                                      ndlp->phba->active_rrq_pool);
5789                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5790         }
5791 }
5792
5793 /* This routine bumps the reference count for a ndlp structure to ensure
5794  * that one discovery thread won't free a ndlp while another discovery thread
5795  * is using it.
5796  */
5797 struct lpfc_nodelist *
5798 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5799 {
5800         struct lpfc_hba *phba;
5801         unsigned long flags;
5802
5803         if (ndlp) {
5804                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5805                         "node get:        did:x%x flg:x%x refcnt:x%x",
5806                         ndlp->nlp_DID, ndlp->nlp_flag,
5807                         atomic_read(&ndlp->kref.refcount));
5808                 /* The check of ndlp usage to prevent incrementing the
5809                  * ndlp reference count that is in the process of being
5810                  * released.
5811                  */
5812                 phba = ndlp->phba;
5813                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5814                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5815                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5816                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5817                                 "0276 lpfc_nlp_get: ndlp:x%p "
5818                                 "usgmap:x%x refcnt:%d\n",
5819                                 (void *)ndlp, ndlp->nlp_usg_map,
5820                                 atomic_read(&ndlp->kref.refcount));
5821                         return NULL;
5822                 } else
5823                         kref_get(&ndlp->kref);
5824                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5825         }
5826         return ndlp;
5827 }
5828
5829 /* This routine decrements the reference count for a ndlp structure. If the
5830  * count goes to 0, this indicates the the associated nodelist should be
5831  * freed. Returning 1 indicates the ndlp resource has been released; on the
5832  * other hand, returning 0 indicates the ndlp resource has not been released
5833  * yet.
5834  */
5835 int
5836 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5837 {
5838         struct lpfc_hba *phba;
5839         unsigned long flags;
5840
5841         if (!ndlp)
5842                 return 1;
5843
5844         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5845         "node put:        did:x%x flg:x%x refcnt:x%x",
5846                 ndlp->nlp_DID, ndlp->nlp_flag,
5847                 atomic_read(&ndlp->kref.refcount));
5848         phba = ndlp->phba;
5849         spin_lock_irqsave(&phba->ndlp_lock, flags);
5850         /* Check the ndlp memory free acknowledge flag to avoid the
5851          * possible race condition that kref_put got invoked again
5852          * after previous one has done ndlp memory free.
5853          */
5854         if (NLP_CHK_FREE_ACK(ndlp)) {
5855                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5856                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5857                                 "0274 lpfc_nlp_put: ndlp:x%p "
5858                                 "usgmap:x%x refcnt:%d\n",
5859                                 (void *)ndlp, ndlp->nlp_usg_map,
5860                                 atomic_read(&ndlp->kref.refcount));
5861                 return 1;
5862         }
5863         /* Check the ndlp inactivate log flag to avoid the possible
5864          * race condition that kref_put got invoked again after ndlp
5865          * is already in inactivating state.
5866          */
5867         if (NLP_CHK_IACT_REQ(ndlp)) {
5868                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5869                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5870                                 "0275 lpfc_nlp_put: ndlp:x%p "
5871                                 "usgmap:x%x refcnt:%d\n",
5872                                 (void *)ndlp, ndlp->nlp_usg_map,
5873                                 atomic_read(&ndlp->kref.refcount));
5874                 return 1;
5875         }
5876         /* For last put, mark the ndlp usage flags to make sure no
5877          * other kref_get and kref_put on the same ndlp shall get
5878          * in between the process when the final kref_put has been
5879          * invoked on this ndlp.
5880          */
5881         if (atomic_read(&ndlp->kref.refcount) == 1) {
5882                 /* Indicate ndlp is put to inactive state. */
5883                 NLP_SET_IACT_REQ(ndlp);
5884                 /* Acknowledge ndlp memory free has been seen. */
5885                 if (NLP_CHK_FREE_REQ(ndlp))
5886                         NLP_SET_FREE_ACK(ndlp);
5887         }
5888         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5889         /* Note, the kref_put returns 1 when decrementing a reference
5890          * count that was 1, it invokes the release callback function,
5891          * but it still left the reference count as 1 (not actually
5892          * performs the last decrementation). Otherwise, it actually
5893          * decrements the reference count and returns 0.
5894          */
5895         return kref_put(&ndlp->kref, lpfc_nlp_release);
5896 }
5897
5898 /* This routine free's the specified nodelist if it is not in use
5899  * by any other discovery thread. This routine returns 1 if the
5900  * ndlp has been freed. A return value of 0 indicates the ndlp is
5901  * not yet been released.
5902  */
5903 int
5904 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5905 {
5906         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5907                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5908                 ndlp->nlp_DID, ndlp->nlp_flag,
5909                 atomic_read(&ndlp->kref.refcount));
5910         if (atomic_read(&ndlp->kref.refcount) == 1)
5911                 if (lpfc_nlp_put(ndlp))
5912                         return 1;
5913         return 0;
5914 }
5915
5916 /**
5917  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5918  * @phba: Pointer to hba context object.
5919  *
5920  * This function iterate through all FC nodes associated
5921  * will all vports to check if there is any node with
5922  * fc_rports associated with it. If there is an fc_rport
5923  * associated with the node, then the node is either in
5924  * discovered state or its devloss_timer is pending.
5925  */
5926 static int
5927 lpfc_fcf_inuse(struct lpfc_hba *phba)
5928 {
5929         struct lpfc_vport **vports;
5930         int i, ret = 0;
5931         struct lpfc_nodelist *ndlp;
5932         struct Scsi_Host  *shost;
5933
5934         vports = lpfc_create_vport_work_array(phba);
5935
5936         /* If driver cannot allocate memory, indicate fcf is in use */
5937         if (!vports)
5938                 return 1;
5939
5940         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5941                 shost = lpfc_shost_from_vport(vports[i]);
5942                 spin_lock_irq(shost->host_lock);
5943                 /*
5944                  * IF the CVL_RCVD bit is not set then we have sent the
5945                  * flogi.
5946                  * If dev_loss fires while we are waiting we do not want to
5947                  * unreg the fcf.
5948                  */
5949                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
5950                         spin_unlock_irq(shost->host_lock);
5951                         ret =  1;
5952                         goto out;
5953                 }
5954                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5955                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5956                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5957                                 ret = 1;
5958                                 spin_unlock_irq(shost->host_lock);
5959                                 goto out;
5960                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5961                                 ret = 1;
5962                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5963                                                 "2624 RPI %x DID %x flag %x "
5964                                                 "still logged in\n",
5965                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
5966                                                 ndlp->nlp_flag);
5967                         }
5968                 }
5969                 spin_unlock_irq(shost->host_lock);
5970         }
5971 out:
5972         lpfc_destroy_vport_work_array(phba, vports);
5973         return ret;
5974 }
5975
5976 /**
5977  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5978  * @phba: Pointer to hba context object.
5979  * @mboxq: Pointer to mailbox object.
5980  *
5981  * This function frees memory associated with the mailbox command.
5982  */
5983 void
5984 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5985 {
5986         struct lpfc_vport *vport = mboxq->vport;
5987         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5988
5989         if (mboxq->u.mb.mbxStatus) {
5990                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5991                         "2555 UNREG_VFI mbxStatus error x%x "
5992                         "HBA state x%x\n",
5993                         mboxq->u.mb.mbxStatus, vport->port_state);
5994         }
5995         spin_lock_irq(shost->host_lock);
5996         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5997         spin_unlock_irq(shost->host_lock);
5998         mempool_free(mboxq, phba->mbox_mem_pool);
5999         return;
6000 }
6001
6002 /**
6003  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6004  * @phba: Pointer to hba context object.
6005  * @mboxq: Pointer to mailbox object.
6006  *
6007  * This function frees memory associated with the mailbox command.
6008  */
6009 static void
6010 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6011 {
6012         struct lpfc_vport *vport = mboxq->vport;
6013
6014         if (mboxq->u.mb.mbxStatus) {
6015                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6016                         "2550 UNREG_FCFI mbxStatus error x%x "
6017                         "HBA state x%x\n",
6018                         mboxq->u.mb.mbxStatus, vport->port_state);
6019         }
6020         mempool_free(mboxq, phba->mbox_mem_pool);
6021         return;
6022 }
6023
6024 /**
6025  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6026  * @phba: Pointer to hba context object.
6027  *
6028  * This function prepare the HBA for unregistering the currently registered
6029  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6030  * VFIs.
6031  */
6032 int
6033 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6034 {
6035         struct lpfc_vport **vports;
6036         struct lpfc_nodelist *ndlp;
6037         struct Scsi_Host *shost;
6038         int i = 0, rc;
6039
6040         /* Unregister RPIs */
6041         if (lpfc_fcf_inuse(phba))
6042                 lpfc_unreg_hba_rpis(phba);
6043
6044         /* At this point, all discovery is aborted */
6045         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6046
6047         /* Unregister VPIs */
6048         vports = lpfc_create_vport_work_array(phba);
6049         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6050                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6051                         /* Stop FLOGI/FDISC retries */
6052                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6053                         if (ndlp)
6054                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6055                         lpfc_cleanup_pending_mbox(vports[i]);
6056                         if (phba->sli_rev == LPFC_SLI_REV4)
6057                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6058                         lpfc_mbx_unreg_vpi(vports[i]);
6059                         shost = lpfc_shost_from_vport(vports[i]);
6060                         spin_lock_irq(shost->host_lock);
6061                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6062                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6063                         spin_unlock_irq(shost->host_lock);
6064                 }
6065         lpfc_destroy_vport_work_array(phba, vports);
6066         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6067                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6068                 if (ndlp)
6069                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6070                 lpfc_cleanup_pending_mbox(phba->pport);
6071                 if (phba->sli_rev == LPFC_SLI_REV4)
6072                         lpfc_sli4_unreg_all_rpis(phba->pport);
6073                 lpfc_mbx_unreg_vpi(phba->pport);
6074                 shost = lpfc_shost_from_vport(phba->pport);
6075                 spin_lock_irq(shost->host_lock);
6076                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6077                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6078                 spin_unlock_irq(shost->host_lock);
6079         }
6080
6081         /* Cleanup any outstanding ELS commands */
6082         lpfc_els_flush_all_cmd(phba);
6083
6084         /* Unregister the physical port VFI */
6085         rc = lpfc_issue_unreg_vfi(phba->pport);
6086         return rc;
6087 }
6088
6089 /**
6090  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6091  * @phba: Pointer to hba context object.
6092  *
6093  * This function issues synchronous unregister FCF mailbox command to HBA to
6094  * unregister the currently registered FCF record. The driver does not reset
6095  * the driver FCF usage state flags.
6096  *
6097  * Return 0 if successfully issued, none-zero otherwise.
6098  */
6099 int
6100 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6101 {
6102         LPFC_MBOXQ_t *mbox;
6103         int rc;
6104
6105         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6106         if (!mbox) {
6107                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6108                                 "2551 UNREG_FCFI mbox allocation failed"
6109                                 "HBA state x%x\n", phba->pport->port_state);
6110                 return -ENOMEM;
6111         }
6112         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6113         mbox->vport = phba->pport;
6114         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6115         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6116
6117         if (rc == MBX_NOT_FINISHED) {
6118                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6119                                 "2552 Unregister FCFI command failed rc x%x "
6120                                 "HBA state x%x\n",
6121                                 rc, phba->pport->port_state);
6122                 return -EINVAL;
6123         }
6124         return 0;
6125 }
6126
6127 /**
6128  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6129  * @phba: Pointer to hba context object.
6130  *
6131  * This function unregisters the currently reigstered FCF. This function
6132  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6133  */
6134 void
6135 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6136 {
6137         int rc;
6138
6139         /* Preparation for unregistering fcf */
6140         rc = lpfc_unregister_fcf_prep(phba);
6141         if (rc) {
6142                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6143                                 "2748 Failed to prepare for unregistering "
6144                                 "HBA's FCF record: rc=%d\n", rc);
6145                 return;
6146         }
6147
6148         /* Now, unregister FCF record and reset HBA FCF state */
6149         rc = lpfc_sli4_unregister_fcf(phba);
6150         if (rc)
6151                 return;
6152         /* Reset HBA FCF states after successful unregister FCF */
6153         phba->fcf.fcf_flag = 0;
6154         phba->fcf.current_rec.flag = 0;
6155
6156         /*
6157          * If driver is not unloading, check if there is any other
6158          * FCF record that can be used for discovery.
6159          */
6160         if ((phba->pport->load_flag & FC_UNLOADING) ||
6161             (phba->link_state < LPFC_LINK_UP))
6162                 return;
6163
6164         /* This is considered as the initial FCF discovery scan */
6165         spin_lock_irq(&phba->hbalock);
6166         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6167         spin_unlock_irq(&phba->hbalock);
6168
6169         /* Reset FCF roundrobin bmask for new discovery */
6170         lpfc_sli4_clear_fcf_rr_bmask(phba);
6171
6172         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6173
6174         if (rc) {
6175                 spin_lock_irq(&phba->hbalock);
6176                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6177                 spin_unlock_irq(&phba->hbalock);
6178                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6179                                 "2553 lpfc_unregister_unused_fcf failed "
6180                                 "to read FCF record HBA state x%x\n",
6181                                 phba->pport->port_state);
6182         }
6183 }
6184
6185 /**
6186  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6187  * @phba: Pointer to hba context object.
6188  *
6189  * This function just unregisters the currently reigstered FCF. It does not
6190  * try to find another FCF for discovery.
6191  */
6192 void
6193 lpfc_unregister_fcf(struct lpfc_hba *phba)
6194 {
6195         int rc;
6196
6197         /* Preparation for unregistering fcf */
6198         rc = lpfc_unregister_fcf_prep(phba);
6199         if (rc) {
6200                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6201                                 "2749 Failed to prepare for unregistering "
6202                                 "HBA's FCF record: rc=%d\n", rc);
6203                 return;
6204         }
6205
6206         /* Now, unregister FCF record and reset HBA FCF state */
6207         rc = lpfc_sli4_unregister_fcf(phba);
6208         if (rc)
6209                 return;
6210         /* Set proper HBA FCF states after successful unregister FCF */
6211         spin_lock_irq(&phba->hbalock);
6212         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6213         spin_unlock_irq(&phba->hbalock);
6214 }
6215
6216 /**
6217  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6218  * @phba: Pointer to hba context object.
6219  *
6220  * This function check if there are any connected remote port for the FCF and
6221  * if all the devices are disconnected, this function unregister FCFI.
6222  * This function also tries to use another FCF for discovery.
6223  */
6224 void
6225 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6226 {
6227         /*
6228          * If HBA is not running in FIP mode, if HBA does not support
6229          * FCoE, if FCF discovery is ongoing, or if FCF has not been
6230          * registered, do nothing.
6231          */
6232         spin_lock_irq(&phba->hbalock);
6233         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6234             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6235             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6236             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6237             (phba->pport->port_state == LPFC_FLOGI)) {
6238                 spin_unlock_irq(&phba->hbalock);
6239                 return;
6240         }
6241         spin_unlock_irq(&phba->hbalock);
6242
6243         if (lpfc_fcf_inuse(phba))
6244                 return;
6245
6246         lpfc_unregister_fcf_rescan(phba);
6247 }
6248
6249 /**
6250  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6251  * @phba: Pointer to hba context object.
6252  * @buff: Buffer containing the FCF connection table as in the config
6253  *         region.
6254  * This function create driver data structure for the FCF connection
6255  * record table read from config region 23.
6256  */
6257 static void
6258 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6259         uint8_t *buff)
6260 {
6261         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6262         struct lpfc_fcf_conn_hdr *conn_hdr;
6263         struct lpfc_fcf_conn_rec *conn_rec;
6264         uint32_t record_count;
6265         int i;
6266
6267         /* Free the current connect table */
6268         list_for_each_entry_safe(conn_entry, next_conn_entry,
6269                 &phba->fcf_conn_rec_list, list) {
6270                 list_del_init(&conn_entry->list);
6271                 kfree(conn_entry);
6272         }
6273
6274         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6275         record_count = conn_hdr->length * sizeof(uint32_t)/
6276                 sizeof(struct lpfc_fcf_conn_rec);
6277
6278         conn_rec = (struct lpfc_fcf_conn_rec *)
6279                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6280
6281         for (i = 0; i < record_count; i++) {
6282                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6283                         continue;
6284                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6285                         GFP_KERNEL);
6286                 if (!conn_entry) {
6287                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6288                                 "2566 Failed to allocate connection"
6289                                 " table entry\n");
6290                         return;
6291                 }
6292
6293                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6294                         sizeof(struct lpfc_fcf_conn_rec));
6295                 list_add_tail(&conn_entry->list,
6296                         &phba->fcf_conn_rec_list);
6297         }
6298
6299         if (!list_empty(&phba->fcf_conn_rec_list)) {
6300                 i = 0;
6301                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6302                                     list) {
6303                         conn_rec = &conn_entry->conn_rec;
6304                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6305                                         "3345 FCF connection list rec[%02d]: "
6306                                         "flags:x%04x, vtag:x%04x, "
6307                                         "fabric_name:x%02x:%02x:%02x:%02x:"
6308                                         "%02x:%02x:%02x:%02x, "
6309                                         "switch_name:x%02x:%02x:%02x:%02x:"
6310                                         "%02x:%02x:%02x:%02x\n", i++,
6311                                         conn_rec->flags, conn_rec->vlan_tag,
6312                                         conn_rec->fabric_name[0],
6313                                         conn_rec->fabric_name[1],
6314                                         conn_rec->fabric_name[2],
6315                                         conn_rec->fabric_name[3],
6316                                         conn_rec->fabric_name[4],
6317                                         conn_rec->fabric_name[5],
6318                                         conn_rec->fabric_name[6],
6319                                         conn_rec->fabric_name[7],
6320                                         conn_rec->switch_name[0],
6321                                         conn_rec->switch_name[1],
6322                                         conn_rec->switch_name[2],
6323                                         conn_rec->switch_name[3],
6324                                         conn_rec->switch_name[4],
6325                                         conn_rec->switch_name[5],
6326                                         conn_rec->switch_name[6],
6327                                         conn_rec->switch_name[7]);
6328                 }
6329         }
6330 }
6331
6332 /**
6333  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6334  * @phba: Pointer to hba context object.
6335  * @buff: Buffer containing the FCoE parameter data structure.
6336  *
6337  *  This function update driver data structure with config
6338  *  parameters read from config region 23.
6339  */
6340 static void
6341 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6342                         uint8_t *buff)
6343 {
6344         struct lpfc_fip_param_hdr *fcoe_param_hdr;
6345         struct lpfc_fcoe_params *fcoe_param;
6346
6347         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6348                 buff;
6349         fcoe_param = (struct lpfc_fcoe_params *)
6350                 (buff + sizeof(struct lpfc_fip_param_hdr));
6351
6352         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6353                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6354                 return;
6355
6356         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6357                 phba->valid_vlan = 1;
6358                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6359                         0xFFF;
6360         }
6361
6362         phba->fc_map[0] = fcoe_param->fc_map[0];
6363         phba->fc_map[1] = fcoe_param->fc_map[1];
6364         phba->fc_map[2] = fcoe_param->fc_map[2];
6365         return;
6366 }
6367
6368 /**
6369  * lpfc_get_rec_conf23 - Get a record type in config region data.
6370  * @buff: Buffer containing config region 23 data.
6371  * @size: Size of the data buffer.
6372  * @rec_type: Record type to be searched.
6373  *
6374  * This function searches config region data to find the beginning
6375  * of the record specified by record_type. If record found, this
6376  * function return pointer to the record else return NULL.
6377  */
6378 static uint8_t *
6379 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6380 {
6381         uint32_t offset = 0, rec_length;
6382
6383         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6384                 (size < sizeof(uint32_t)))
6385                 return NULL;
6386
6387         rec_length = buff[offset + 1];
6388
6389         /*
6390          * One TLV record has one word header and number of data words
6391          * specified in the rec_length field of the record header.
6392          */
6393         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6394                 <= size) {
6395                 if (buff[offset] == rec_type)
6396                         return &buff[offset];
6397
6398                 if (buff[offset] == LPFC_REGION23_LAST_REC)
6399                         return NULL;
6400
6401                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6402                 rec_length = buff[offset + 1];
6403         }
6404         return NULL;
6405 }
6406
6407 /**
6408  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6409  * @phba: Pointer to lpfc_hba data structure.
6410  * @buff: Buffer containing config region 23 data.
6411  * @size: Size of the data buffer.
6412  *
6413  * This function parses the FCoE config parameters in config region 23 and
6414  * populate driver data structure with the parameters.
6415  */
6416 void
6417 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6418                 uint8_t *buff,
6419                 uint32_t size)
6420 {
6421         uint32_t offset = 0;
6422         uint8_t *rec_ptr;
6423
6424         /*
6425          * If data size is less than 2 words signature and version cannot be
6426          * verified.
6427          */
6428         if (size < 2*sizeof(uint32_t))
6429                 return;
6430
6431         /* Check the region signature first */
6432         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6433                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6434                         "2567 Config region 23 has bad signature\n");
6435                 return;
6436         }
6437
6438         offset += 4;
6439
6440         /* Check the data structure version */
6441         if (buff[offset] != LPFC_REGION23_VERSION) {
6442                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6443                         "2568 Config region 23 has bad version\n");
6444                 return;
6445         }
6446         offset += 4;
6447
6448         /* Read FCoE param record */
6449         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6450                         size - offset, FCOE_PARAM_TYPE);
6451         if (rec_ptr)
6452                 lpfc_read_fcoe_param(phba, rec_ptr);
6453
6454         /* Read FCF connection table */
6455         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6456                 size - offset, FCOE_CONN_TBL_TYPE);
6457         if (rec_ptr)
6458                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
6459
6460 }