kernel/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) 2004-2015 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/slab.h>
  25 #include <linux/pci.h>
  26 #include <linux/kthread.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi.h>
  30 #include <scsi/scsi_device.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport_fc.h>
  33
  34 #include "lpfc_hw4.h"
  35 #include "lpfc_hw.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_sli.h"
  39 #include "lpfc_sli4.h"
  40 #include "lpfc_scsi.h"
  41 #include "lpfc.h"
  42 #include "lpfc_logmsg.h"
  43 #include "lpfc_crtn.h"
  44 #include "lpfc_vport.h"
  45 #include "lpfc_debugfs.h"
  46
  47 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  48 static uint8_t lpfcAlpaArray[] = {
  49         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  50         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  51         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  52         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  53         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  54         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  55         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  56         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  57         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  58         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  59         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  60         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  61         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  62 };
  63
  64 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  65 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  66 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  67 static int lpfc_fcf_inuse(struct lpfc_hba *);
  68
  69 void
  70 lpfc_terminate_rport_io(struct fc_rport *rport)
  71 {
  72         struct lpfc_rport_data *rdata;
  73         struct lpfc_nodelist * ndlp;
  74         struct lpfc_hba *phba;
  75
  76         rdata = rport->dd_data;
  77         ndlp = rdata->pnode;
  78
  79         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  80                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  81                         printk(KERN_ERR "Cannot find remote node"
  82                         " to terminate I/O Data x%x\n",
  83                         rport->port_id);
  84                 return;
  85         }
  86
  87         phba  = ndlp->phba;
  88
  89         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  90                 "rport terminate: sid:x%x did:x%x flg:x%x",
  91                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  92
  93         if (ndlp->nlp_sid != NLP_NO_SID) {
  94                 lpfc_sli_abort_iocb(ndlp->vport,
  95                         &phba->sli.ring[phba->sli.fcp_ring],
  96                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  97         }
  98 }
  99
 100 /*
 101  * This function will be called when dev_loss_tmo fire.
 102  */
 103 void
 104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 105 {
 106         struct lpfc_rport_data *rdata;
 107         struct lpfc_nodelist * ndlp;
 108         struct lpfc_vport *vport;
 109         struct lpfc_hba   *phba;
 110         struct lpfc_work_evt *evtp;
 111         int  put_node;
 112         int  put_rport;
 113
 114         rdata = rport->dd_data;
 115         ndlp = rdata->pnode;
 116         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 117                 return;
 118
 119         vport = ndlp->vport;
 120         phba  = vport->phba;
 121
 122         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 123                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 124                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 125
 126         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 127                          "3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
 128                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 129
 130         /* Don't defer this if we are in the process of deleting the vport
 131          * or unloading the driver. The unload will cleanup the node
 132          * appropriately we just need to cleanup the ndlp rport info here.
 133          */
 134         if (vport->load_flag & FC_UNLOADING) {
 135                 put_node = rdata->pnode != NULL;
 136                 put_rport = ndlp->rport != NULL;
 137                 rdata->pnode = NULL;
 138                 ndlp->rport = NULL;
 139                 if (put_node)
 140                         lpfc_nlp_put(ndlp);
 141                 if (put_rport)
 142                         put_device(&rport->dev);
 143                 return;
 144         }
 145
 146         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 147                 return;
 148
 149         if (ndlp->nlp_type & NLP_FABRIC) {
 150
 151                 /* If the WWPN of the rport and ndlp don't match, ignore it */
 152                 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) {
 153                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
 154                                 "6789 rport name %lx != node port name %lx",
 155                                 (unsigned long)rport->port_name,
 156                                 (unsigned long)wwn_to_u64(
 157                                                 ndlp->nlp_portname.u.wwn));
 158                         put_node = rdata->pnode != NULL;
 159                         put_rport = ndlp->rport != NULL;
 160                         rdata->pnode = NULL;
 161                         ndlp->rport = NULL;
 162                         if (put_node)
 163                                 lpfc_nlp_put(ndlp);
 164                         put_device(&rport->dev);
 165                         return;
 166                 }
 167
 168                 put_node = rdata->pnode != NULL;
 169                 put_rport = ndlp->rport != NULL;
 170                 rdata->pnode = NULL;
 171                 ndlp->rport = NULL;
 172                 if (put_node)
 173                         lpfc_nlp_put(ndlp);
 174                 if (put_rport)
 175                         put_device(&rport->dev);
 176                 return;
 177         }
 178
 179         evtp = &ndlp->dev_loss_evt;
 180
 181         if (!list_empty(&evtp->evt_listp))
 182                 return;
 183
 184         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 185         ndlp->nlp_add_flag |= NLP_IN_DEV_LOSS;
 186
 187         spin_lock_irq(&phba->hbalock);
 188         /* We need to hold the node by incrementing the reference
 189          * count until this queued work is done
 190          */
 191         if (evtp->evt_arg1) {
 192                 evtp->evt = LPFC_EVT_DEV_LOSS;
 193                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 194                 lpfc_worker_wake_up(phba);
 195         }
 196         spin_unlock_irq(&phba->hbalock);
 197
 198         return;
 199 }
 200
 201 /**
 202  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
 203  * @ndlp: Pointer to remote node object.
 204  *
 205  * This function is called from the worker thread when devloss timeout timer
 206  * expires. For SLI4 host, this routine shall return 1 when at lease one
 207  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
 208  * routine shall return 0 when there is no remote node is still in use of FCF
 209  * when devloss timeout happened to this @ndlp.
 210  **/
 211 static int
 212 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 213 {
 214         struct lpfc_rport_data *rdata;
 215         struct fc_rport   *rport;
 216         struct lpfc_vport *vport;
 217         struct lpfc_hba   *phba;
 218         uint8_t *name;
 219         int  put_node;
 220         int  put_rport;
 221         int warn_on = 0;
 222         int fcf_inuse = 0;
 223
 224         rport = ndlp->rport;
 225
 226         if (!rport) {
 227                 ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
 228                 return fcf_inuse;
 229         }
 230
 231         rdata = rport->dd_data;
 232         name = (uint8_t *) &ndlp->nlp_portname;
 233         vport = ndlp->vport;
 234         phba  = vport->phba;
 235
 236         if (phba->sli_rev == LPFC_SLI_REV4)
 237                 fcf_inuse = lpfc_fcf_inuse(phba);
 238
 239         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 240                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 241                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 242
 243         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
 244                          "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
 245                          ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
 246
 247         /* Don't defer this if we are in the process of deleting the vport
 248          * or unloading the driver. The unload will cleanup the node
 249          * appropriately we just need to cleanup the ndlp rport info here.
 250          */
 251         if (vport->load_flag & FC_UNLOADING) {
 252                 if (ndlp->nlp_sid != NLP_NO_SID) {
 253                         /* flush the target */
 254                         lpfc_sli_abort_iocb(vport,
 255                                         &phba->sli.ring[phba->sli.fcp_ring],
 256                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 257                 }
 258                 put_node = rdata->pnode != NULL;
 259                 put_rport = ndlp->rport != NULL;
 260                 rdata->pnode = NULL;
 261                 ndlp->rport = NULL;
 262                 ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
 263                 if (put_node)
 264                         lpfc_nlp_put(ndlp);
 265                 if (put_rport)
 266                         put_device(&rport->dev);
 267                 return fcf_inuse;
 268         }
 269
 270         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 271                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 272                                  "0284 Devloss timeout Ignored on "
 273                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 274                                  "NPort x%x\n",
 275                                  *name, *(name+1), *(name+2), *(name+3),
 276                                  *(name+4), *(name+5), *(name+6), *(name+7),
 277                                  ndlp->nlp_DID);
 278                 ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
 279                 return fcf_inuse;
 280         }
 281
 282         if (ndlp->nlp_type & NLP_FABRIC) {
 283                 /* We will clean up these Nodes in linkup */
 284                 put_node = rdata->pnode != NULL;
 285                 put_rport = ndlp->rport != NULL;
 286                 rdata->pnode = NULL;
 287                 ndlp->rport = NULL;
 288                 ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
 289                 if (put_node)
 290                         lpfc_nlp_put(ndlp);
 291                 if (put_rport)
 292                         put_device(&rport->dev);
 293                 return fcf_inuse;
 294         }
 295
 296         if (ndlp->nlp_sid != NLP_NO_SID) {
 297                 warn_on = 1;
 298                 /* flush the target */
 299                 ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
 300                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 301                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 302         }
 303
 304         if (warn_on) {
 305                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 306                                  "0203 Devloss timeout on "
 307                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 308                                  "NPort x%06x Data: x%x x%x x%x\n",
 309                                  *name, *(name+1), *(name+2), *(name+3),
 310                                  *(name+4), *(name+5), *(name+6), *(name+7),
 311                                  ndlp->nlp_DID, ndlp->nlp_flag,
 312                                  ndlp->nlp_state, ndlp->nlp_rpi);
 313         } else {
 314                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 315                                  "0204 Devloss timeout on "
 316                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 317                                  "NPort x%06x Data: x%x x%x x%x\n",
 318                                  *name, *(name+1), *(name+2), *(name+3),
 319                                  *(name+4), *(name+5), *(name+6), *(name+7),
 320                                  ndlp->nlp_DID, ndlp->nlp_flag,
 321                                  ndlp->nlp_state, ndlp->nlp_rpi);
 322         }
 323
 324         put_node = rdata->pnode != NULL;
 325         put_rport = ndlp->rport != NULL;
 326         rdata->pnode = NULL;
 327         ndlp->rport = NULL;
 328         ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
 329         if (put_node)
 330                 lpfc_nlp_put(ndlp);
 331         if (put_rport)
 332                 put_device(&rport->dev);
 333
 334         if (!(vport->load_flag & FC_UNLOADING) &&
 335             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 336             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 337             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
 338             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
 339             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 340                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 341
 342         return fcf_inuse;
 343 }
 344
 345 /**
 346  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
 347  * @phba: Pointer to hba context object.
 348  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
 349  * @nlp_did: remote node identifer with devloss timeout.
 350  *
 351  * This function is called from the worker thread after invoking devloss
 352  * timeout handler and releasing the reference count for the ndlp with
 353  * which the devloss timeout was handled for SLI4 host. For the devloss
 354  * timeout of the last remote node which had been in use of FCF, when this
 355  * routine is invoked, it shall be guaranteed that none of the remote are
 356  * in-use of FCF. When devloss timeout to the last remote using the FCF,
 357  * if the FIP engine is neither in FCF table scan process nor roundrobin
 358  * failover process, the in-use FCF shall be unregistered. If the FIP
 359  * engine is in FCF discovery process, the devloss timeout state shall
 360  * be set for either the FCF table scan process or roundrobin failover
 361  * process to unregister the in-use FCF.
 362  **/
 363 static void
 364 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
 365                                     uint32_t nlp_did)
 366 {
 367         /* If devloss timeout happened to a remote node when FCF had no
 368          * longer been in-use, do nothing.
 369          */
 370         if (!fcf_inuse)
 371                 return;
 372
 373         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
 374                 spin_lock_irq(&phba->hbalock);
 375                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 376                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
 377                                 spin_unlock_irq(&phba->hbalock);
 378                                 return;
 379                         }
 380                         phba->hba_flag |= HBA_DEVLOSS_TMO;
 381                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 382                                         "2847 Last remote node (x%x) using "
 383                                         "FCF devloss tmo\n", nlp_did);
 384                 }
 385                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
 386                         spin_unlock_irq(&phba->hbalock);
 387                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 388                                         "2868 Devloss tmo to FCF rediscovery "
 389                                         "in progress\n");
 390                         return;
 391                 }
 392                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
 393                         spin_unlock_irq(&phba->hbalock);
 394                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 395                                         "2869 Devloss tmo to idle FIP engine, "
 396                                         "unreg in-use FCF and rescan.\n");
 397                         /* Unregister in-use FCF and rescan */
 398                         lpfc_unregister_fcf_rescan(phba);
 399                         return;
 400                 }
 401                 spin_unlock_irq(&phba->hbalock);
 402                 if (phba->hba_flag & FCF_TS_INPROG)
 403                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 404                                         "2870 FCF table scan in progress\n");
 405                 if (phba->hba_flag & FCF_RR_INPROG)
 406                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 407                                         "2871 FLOGI roundrobin FCF failover "
 408                                         "in progress\n");
 409         }
 410         lpfc_unregister_unused_fcf(phba);
 411 }
 412
 413 /**
 414  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 415  * @phba: Pointer to hba context object.
 416  *
 417  * This function is called from the functions which need to post
 418  * events from interrupt context. This function allocates data
 419  * structure required for posting event. It also keeps track of
 420  * number of events pending and prevent event storm when there are
 421  * too many events.
 422  **/
 423 struct lpfc_fast_path_event *
 424 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 425         struct lpfc_fast_path_event *ret;
 426
 427         /* If there are lot of fast event do not exhaust memory due to this */
 428         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 429                 return NULL;
 430
 431         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 432                         GFP_ATOMIC);
 433         if (ret) {
 434                 atomic_inc(&phba->fast_event_count);
 435                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 436                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 437         }
 438         return ret;
 439 }
 440
 441 /**
 442  * lpfc_free_fast_evt - Frees event data structure
 443  * @phba: Pointer to hba context object.
 444  * @evt:  Event object which need to be freed.
 445  *
 446  * This function frees the data structure required for posting
 447  * events.
 448  **/
 449 void
 450 lpfc_free_fast_evt(struct lpfc_hba *phba,
 451                 struct lpfc_fast_path_event *evt) {
 452
 453         atomic_dec(&phba->fast_event_count);
 454         kfree(evt);
 455 }
 456
 457 /**
 458  * lpfc_send_fastpath_evt - Posts events generated from fast path
 459  * @phba: Pointer to hba context object.
 460  * @evtp: Event data structure.
 461  *
 462  * This function is called from worker thread, when the interrupt
 463  * context need to post an event. This function posts the event
 464  * to fc transport netlink interface.
 465  **/
 466 static void
 467 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 468                 struct lpfc_work_evt *evtp)
 469 {
 470         unsigned long evt_category, evt_sub_category;
 471         struct lpfc_fast_path_event *fast_evt_data;
 472         char *evt_data;
 473         uint32_t evt_data_size;
 474         struct Scsi_Host *shost;
 475
 476         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 477                 work_evt);
 478
 479         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 480         evt_sub_category = (unsigned long) fast_evt_data->un.
 481                         fabric_evt.subcategory;
 482         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 483         if (evt_category == FC_REG_FABRIC_EVENT) {
 484                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 485                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 486                         evt_data_size = sizeof(fast_evt_data->un.
 487                                 read_check_error);
 488                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 489                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 490                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 491                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 492                 } else {
 493                         lpfc_free_fast_evt(phba, fast_evt_data);
 494                         return;
 495                 }
 496         } else if (evt_category == FC_REG_SCSI_EVENT) {
 497                 switch (evt_sub_category) {
 498                 case LPFC_EVENT_QFULL:
 499                 case LPFC_EVENT_DEVBSY:
 500                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 501                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 502                         break;
 503                 case LPFC_EVENT_CHECK_COND:
 504                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 505                         evt_data_size =  sizeof(fast_evt_data->un.
 506                                 check_cond_evt);
 507                         break;
 508                 case LPFC_EVENT_VARQUEDEPTH:
 509                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 510                         evt_data_size = sizeof(fast_evt_data->un.
 511                                 queue_depth_evt);
 512                         break;
 513                 default:
 514                         lpfc_free_fast_evt(phba, fast_evt_data);
 515                         return;
 516                 }
 517         } else {
 518                 lpfc_free_fast_evt(phba, fast_evt_data);
 519                 return;
 520         }
 521
 522         fc_host_post_vendor_event(shost,
 523                 fc_get_event_number(),
 524                 evt_data_size,
 525                 evt_data,
 526                 LPFC_NL_VENDOR_ID);
 527
 528         lpfc_free_fast_evt(phba, fast_evt_data);
 529         return;
 530 }
 531
 532 static void
 533 lpfc_work_list_done(struct lpfc_hba *phba)
 534 {
 535         struct lpfc_work_evt  *evtp = NULL;
 536         struct lpfc_nodelist  *ndlp;
 537         int free_evt;
 538         int fcf_inuse;
 539         uint32_t nlp_did;
 540
 541         spin_lock_irq(&phba->hbalock);
 542         while (!list_empty(&phba->work_list)) {
 543                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 544                                  evt_listp);
 545                 spin_unlock_irq(&phba->hbalock);
 546                 free_evt = 1;
 547                 switch (evtp->evt) {
 548                 case LPFC_EVT_ELS_RETRY:
 549                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 550                         lpfc_els_retry_delay_handler(ndlp);
 551                         free_evt = 0; /* evt is part of ndlp */
 552                         /* decrement the node reference count held
 553                          * for this queued work
 554                          */
 555                         lpfc_nlp_put(ndlp);
 556                         break;
 557                 case LPFC_EVT_DEV_LOSS:
 558                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 559                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
 560                         free_evt = 0;
 561                         /* decrement the node reference count held for
 562                          * this queued work
 563                          */
 564                         nlp_did = ndlp->nlp_DID;
 565                         lpfc_nlp_put(ndlp);
 566                         if (phba->sli_rev == LPFC_SLI_REV4)
 567                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
 568                                                                     fcf_inuse,
 569                                                                     nlp_did);
 570                         break;
 571                 case LPFC_EVT_ONLINE:
 572                         if (phba->link_state < LPFC_LINK_DOWN)
 573                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 574                         else
 575                                 *(int *) (evtp->evt_arg1) = 0;
 576                         complete((struct completion *)(evtp->evt_arg2));
 577                         break;
 578                 case LPFC_EVT_OFFLINE_PREP:
 579                         if (phba->link_state >= LPFC_LINK_DOWN)
 580                                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
 581                         *(int *)(evtp->evt_arg1) = 0;
 582                         complete((struct completion *)(evtp->evt_arg2));
 583                         break;
 584                 case LPFC_EVT_OFFLINE:
 585                         lpfc_offline(phba);
 586                         lpfc_sli_brdrestart(phba);
 587                         *(int *)(evtp->evt_arg1) =
 588                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 589                         lpfc_unblock_mgmt_io(phba);
 590                         complete((struct completion *)(evtp->evt_arg2));
 591                         break;
 592                 case LPFC_EVT_WARM_START:
 593                         lpfc_offline(phba);
 594                         lpfc_reset_barrier(phba);
 595                         lpfc_sli_brdreset(phba);
 596                         lpfc_hba_down_post(phba);
 597                         *(int *)(evtp->evt_arg1) =
 598                                 lpfc_sli_brdready(phba, HS_MBRDY);
 599                         lpfc_unblock_mgmt_io(phba);
 600                         complete((struct completion *)(evtp->evt_arg2));
 601                         break;
 602                 case LPFC_EVT_KILL:
 603                         lpfc_offline(phba);
 604                         *(int *)(evtp->evt_arg1)
 605                                 = (phba->pport->stopped)
 606                                         ? 0 : lpfc_sli_brdkill(phba);
 607                         lpfc_unblock_mgmt_io(phba);
 608                         complete((struct completion *)(evtp->evt_arg2));
 609                         break;
 610                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 611                         lpfc_send_fastpath_evt(phba, evtp);
 612                         free_evt = 0;
 613                         break;
 614                 case LPFC_EVT_RESET_HBA:
 615                         if (!(phba->pport->load_flag & FC_UNLOADING))
 616                                 lpfc_reset_hba(phba);
 617                         break;
 618                 }
 619                 if (free_evt)
 620                         kfree(evtp);
 621                 spin_lock_irq(&phba->hbalock);
 622         }
 623         spin_unlock_irq(&phba->hbalock);
 624
 625 }
 626
 627 static void
 628 lpfc_work_done(struct lpfc_hba *phba)
 629 {
 630         struct lpfc_sli_ring *pring;
 631         uint32_t ha_copy, status, control, work_port_events;
 632         struct lpfc_vport **vports;
 633         struct lpfc_vport *vport;
 634         int i;
 635
 636         spin_lock_irq(&phba->hbalock);
 637         ha_copy = phba->work_ha;
 638         phba->work_ha = 0;
 639         spin_unlock_irq(&phba->hbalock);
 640
 641         /* First, try to post the next mailbox command to SLI4 device */
 642         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 643                 lpfc_sli4_post_async_mbox(phba);
 644
 645         if (ha_copy & HA_ERATT)
 646                 /* Handle the error attention event */
 647                 lpfc_handle_eratt(phba);
 648
 649         if (ha_copy & HA_MBATT)
 650                 lpfc_sli_handle_mb_event(phba);
 651
 652         if (ha_copy & HA_LATT)
 653                 lpfc_handle_latt(phba);
 654
 655         /* Process SLI4 events */
 656         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 657                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
 658                         lpfc_handle_rrq_active(phba);
 659                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 660                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 661                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 662                         lpfc_sli4_els_xri_abort_event_proc(phba);
 663                 if (phba->hba_flag & ASYNC_EVENT)
 664                         lpfc_sli4_async_event_proc(phba);
 665                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 666                         spin_lock_irq(&phba->hbalock);
 667                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 668                         spin_unlock_irq(&phba->hbalock);
 669                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 670                 }
 671                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
 672                         lpfc_sli4_fcf_redisc_event_proc(phba);
 673         }
 674
 675         vports = lpfc_create_vport_work_array(phba);
 676         if (vports != NULL)
 677                 for (i = 0; i <= phba->max_vports; i++) {
 678                         /*
 679                          * We could have no vports in array if unloading, so if
 680                          * this happens then just use the pport
 681                          */
 682                         if (vports[i] == NULL && i == 0)
 683                                 vport = phba->pport;
 684                         else
 685                                 vport = vports[i];
 686                         if (vport == NULL)
 687                                 break;
 688                         spin_lock_irq(&vport->work_port_lock);
 689                         work_port_events = vport->work_port_events;
 690                         vport->work_port_events &= ~work_port_events;
 691                         spin_unlock_irq(&vport->work_port_lock);
 692                         if (work_port_events & WORKER_DISC_TMO)
 693                                 lpfc_disc_timeout_handler(vport);
 694                         if (work_port_events & WORKER_ELS_TMO)
 695                                 lpfc_els_timeout_handler(vport);
 696                         if (work_port_events & WORKER_HB_TMO)
 697                                 lpfc_hb_timeout_handler(phba);
 698                         if (work_port_events & WORKER_MBOX_TMO)
 699                                 lpfc_mbox_timeout_handler(phba);
 700                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 701                                 lpfc_unblock_fabric_iocbs(phba);
 702                         if (work_port_events & WORKER_FDMI_TMO)
 703                                 lpfc_fdmi_timeout_handler(vport);
 704                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 705                                 lpfc_ramp_down_queue_handler(phba);
 706                         if (work_port_events & WORKER_DELAYED_DISC_TMO)
 707                                 lpfc_delayed_disc_timeout_handler(vport);
 708                 }
 709         lpfc_destroy_vport_work_array(phba, vports);
 710
 711         pring = &phba->sli.ring[LPFC_ELS_RING];
 712         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 713         status >>= (4*LPFC_ELS_RING);
 714         if ((status & HA_RXMASK) ||
 715             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 716             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 717                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 718                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 719                         /* Set the lpfc data pending flag */
 720                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 721                 } else {
 722                         if (phba->link_state >= LPFC_LINK_UP) {
 723                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 724                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 725                                                                 (status &
 726                                                                 HA_RXMASK));
 727                         }
 728                 }
 729                 if ((phba->sli_rev == LPFC_SLI_REV4) &
 730                                  (!list_empty(&pring->txq)))
 731                         lpfc_drain_txq(phba);
 732                 /*
 733                  * Turn on Ring interrupts
 734                  */
 735                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 736                         spin_lock_irq(&phba->hbalock);
 737                         control = readl(phba->HCregaddr);
 738                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 739                                 lpfc_debugfs_slow_ring_trc(phba,
 740                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 741                                         control, ha_copy, 0);
 742
 743                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 744                                 writel(control, phba->HCregaddr);
 745                                 readl(phba->HCregaddr); /* flush */
 746                         } else {
 747                                 lpfc_debugfs_slow_ring_trc(phba,
 748                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 749                                         control, ha_copy, 0);
 750                         }
 751                         spin_unlock_irq(&phba->hbalock);
 752                 }
 753         }
 754         lpfc_work_list_done(phba);
 755 }
 756
 757 int
 758 lpfc_do_work(void *p)
 759 {
 760         struct lpfc_hba *phba = p;
 761         int rc;
 762
 763         set_user_nice(current, MIN_NICE);
 764         current->flags |= PF_NOFREEZE;
 765         phba->data_flags = 0;
 766
 767         while (!kthread_should_stop()) {
 768                 /* wait and check worker queue activities */
 769                 rc = wait_event_interruptible(phba->work_waitq,
 770                                         (test_and_clear_bit(LPFC_DATA_READY,
 771                                                             &phba->data_flags)
 772                                          || kthread_should_stop()));
 773                 /* Signal wakeup shall terminate the worker thread */
 774                 if (rc) {
 775                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 776                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 777                         break;
 778                 }
 779
 780                 /* Attend pending lpfc data processing */
 781                 lpfc_work_done(phba);
 782         }
 783         phba->worker_thread = NULL;
 784         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 785                         "0432 Worker thread stopped.\n");
 786         return 0;
 787 }
 788
 789 /*
 790  * This is only called to handle FC worker events. Since this a rare
 791  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
 792  * embedding it in the IOCB.
 793  */
 794 int
 795 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 796                       uint32_t evt)
 797 {
 798         struct lpfc_work_evt  *evtp;
 799         unsigned long flags;
 800
 801         /*
 802          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 803          * be queued to worker thread for processing
 804          */
 805         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 806         if (!evtp)
 807                 return 0;
 808
 809         evtp->evt_arg1  = arg1;
 810         evtp->evt_arg2  = arg2;
 811         evtp->evt       = evt;
 812
 813         spin_lock_irqsave(&phba->hbalock, flags);
 814         list_add_tail(&evtp->evt_listp, &phba->work_list);
 815         spin_unlock_irqrestore(&phba->hbalock, flags);
 816
 817         lpfc_worker_wake_up(phba);
 818
 819         return 1;
 820 }
 821
 822 void
 823 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 824 {
 825         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 826         struct lpfc_hba  *phba = vport->phba;
 827         struct lpfc_nodelist *ndlp, *next_ndlp;
 828         int  rc;
 829
 830         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 831                 if (!NLP_CHK_NODE_ACT(ndlp))
 832                         continue;
 833                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 834                         continue;
 835                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 836                         ((vport->port_type == LPFC_NPIV_PORT) &&
 837                         (ndlp->nlp_DID == NameServer_DID)))
 838                         lpfc_unreg_rpi(vport, ndlp);
 839
 840                 /* Leave Fabric nodes alone on link down */
 841                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 842                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 843                         continue;
 844                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 845                                              remove
 846                                              ? NLP_EVT_DEVICE_RM
 847                                              : NLP_EVT_DEVICE_RECOVERY);
 848         }
 849         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 850                 if (phba->sli_rev == LPFC_SLI_REV4)
 851                         lpfc_sli4_unreg_all_rpis(vport);
 852                 lpfc_mbx_unreg_vpi(vport);
 853                 spin_lock_irq(shost->host_lock);
 854                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 855                 spin_unlock_irq(shost->host_lock);
 856         }
 857 }
 858
 859 void
 860 lpfc_port_link_failure(struct lpfc_vport *vport)
 861 {
 862         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 863
 864         /* Cleanup any outstanding received buffers */
 865         lpfc_cleanup_rcv_buffers(vport);
 866
 867         /* Cleanup any outstanding RSCN activity */
 868         lpfc_els_flush_rscn(vport);
 869
 870         /* Cleanup any outstanding ELS commands */
 871         lpfc_els_flush_cmd(vport);
 872
 873         lpfc_cleanup_rpis(vport, 0);
 874
 875         /* Turn off discovery timer if its running */
 876         lpfc_can_disctmo(vport);
 877 }
 878
 879 void
 880 lpfc_linkdown_port(struct lpfc_vport *vport)
 881 {
 882         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 883
 884         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 885
 886         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 887                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 888                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 889
 890         lpfc_port_link_failure(vport);
 891
 892         /* Stop delayed Nport discovery */
 893         spin_lock_irq(shost->host_lock);
 894         vport->fc_flag &= ~FC_DISC_DELAYED;
 895         spin_unlock_irq(shost->host_lock);
 896         del_timer_sync(&vport->delayed_disc_tmo);
 897 }
 898
 899 int
 900 lpfc_linkdown(struct lpfc_hba *phba)
 901 {
 902         struct lpfc_vport *vport = phba->pport;
 903         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 904         struct lpfc_vport **vports;
 905         LPFC_MBOXQ_t          *mb;
 906         int i;
 907
 908         if (phba->link_state == LPFC_LINK_DOWN)
 909                 return 0;
 910
 911         /* Block all SCSI stack I/Os */
 912         lpfc_scsi_dev_block(phba);
 913
 914         spin_lock_irq(&phba->hbalock);
 915         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
 916         spin_unlock_irq(&phba->hbalock);
 917         if (phba->link_state > LPFC_LINK_DOWN) {
 918                 phba->link_state = LPFC_LINK_DOWN;
 919                 spin_lock_irq(shost->host_lock);
 920                 phba->pport->fc_flag &= ~FC_LBIT;
 921                 spin_unlock_irq(shost->host_lock);
 922         }
 923         vports = lpfc_create_vport_work_array(phba);
 924         if (vports != NULL)
 925                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 926                         /* Issue a LINK DOWN event to all nodes */
 927                         lpfc_linkdown_port(vports[i]);
 928                 }
 929         lpfc_destroy_vport_work_array(phba, vports);
 930         /* Clean up any firmware default rpi's */
 931         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 932         if (mb) {
 933                 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
 934                 mb->vport = vport;
 935                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 936                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 937                     == MBX_NOT_FINISHED) {
 938                         mempool_free(mb, phba->mbox_mem_pool);
 939                 }
 940         }
 941
 942         /* Setup myDID for link up if we are in pt2pt mode */
 943         if (phba->pport->fc_flag & FC_PT2PT) {
 944                 phba->pport->fc_myDID = 0;
 945                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 946                 if (mb) {
 947                         lpfc_config_link(phba, mb);
 948                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 949                         mb->vport = vport;
 950                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 951                             == MBX_NOT_FINISHED) {
 952                                 mempool_free(mb, phba->mbox_mem_pool);
 953                         }
 954                 }
 955                 spin_lock_irq(shost->host_lock);
 956                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 957                 spin_unlock_irq(shost->host_lock);
 958         }
 959
 960         return 0;
 961 }
 962
 963 static void
 964 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 965 {
 966         struct lpfc_nodelist *ndlp;
 967
 968         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 969                 if (!NLP_CHK_NODE_ACT(ndlp))
 970                         continue;
 971                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 972                         continue;
 973                 if (ndlp->nlp_type & NLP_FABRIC) {
 974                         /* On Linkup its safe to clean up the ndlp
 975                          * from Fabric connections.
 976                          */
 977                         if (ndlp->nlp_DID != Fabric_DID)
 978                                 lpfc_unreg_rpi(vport, ndlp);
 979                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 980                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 981                         /* Fail outstanding IO now since device is
 982                          * marked for PLOGI.
 983                          */
 984                         lpfc_unreg_rpi(vport, ndlp);
 985                 }
 986         }
 987 }
 988
 989 static void
 990 lpfc_linkup_port(struct lpfc_vport *vport)
 991 {
 992         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 993         struct lpfc_hba  *phba = vport->phba;
 994
 995         if ((vport->load_flag & FC_UNLOADING) != 0)
 996                 return;
 997
 998         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 999                 "Link Up:         top:x%x speed:x%x flg:x%x",
1000                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1001
1002         /* If NPIV is not enabled, only bring the physical port up */
1003         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1004                 (vport != phba->pport))
1005                 return;
1006
1007         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
1008
1009         spin_lock_irq(shost->host_lock);
1010         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1011                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1012         vport->fc_flag |= FC_NDISC_ACTIVE;
1013         vport->fc_ns_retry = 0;
1014         spin_unlock_irq(shost->host_lock);
1015
1016         if (vport->fc_flag & FC_LBIT)
1017                 lpfc_linkup_cleanup_nodes(vport);
1018
1019 }
1020
1021 static int
1022 lpfc_linkup(struct lpfc_hba *phba)
1023 {
1024         struct lpfc_vport **vports;
1025         int i;
1026
1027         phba->link_state = LPFC_LINK_UP;
1028
1029         /* Unblock fabric iocbs if they are blocked */
1030         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1031         del_timer_sync(&phba->fabric_block_timer);
1032
1033         vports = lpfc_create_vport_work_array(phba);
1034         if (vports != NULL)
1035                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1036                         lpfc_linkup_port(vports[i]);
1037         lpfc_destroy_vport_work_array(phba, vports);
1038
1039         return 0;
1040 }
1041
1042 /*
1043  * This routine handles processing a CLEAR_LA mailbox
1044  * command upon completion. It is setup in the LPFC_MBOXQ
1045  * as the completion routine when the command is
1046  * handed off to the SLI layer.
1047  */
1048 static void
1049 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1050 {
1051         struct lpfc_vport *vport = pmb->vport;
1052         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1053         struct lpfc_sli   *psli = &phba->sli;
1054         MAILBOX_t *mb = &pmb->u.mb;
1055         uint32_t control;
1056
1057         /* Since we don't do discovery right now, turn these off here */
1058         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1059         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1060         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1061
1062         /* Check for error */
1063         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1064                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1065                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1066                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1067                                  "state x%x\n",
1068                                  mb->mbxStatus, vport->port_state);
1069                 phba->link_state = LPFC_HBA_ERROR;
1070                 goto out;
1071         }
1072
1073         if (vport->port_type == LPFC_PHYSICAL_PORT)
1074                 phba->link_state = LPFC_HBA_READY;
1075
1076         spin_lock_irq(&phba->hbalock);
1077         psli->sli_flag |= LPFC_PROCESS_LA;
1078         control = readl(phba->HCregaddr);
1079         control |= HC_LAINT_ENA;
1080         writel(control, phba->HCregaddr);
1081         readl(phba->HCregaddr); /* flush */
1082         spin_unlock_irq(&phba->hbalock);
1083         mempool_free(pmb, phba->mbox_mem_pool);
1084         return;
1085
1086 out:
1087         /* Device Discovery completes */
1088         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1089                          "0225 Device Discovery completes\n");
1090         mempool_free(pmb, phba->mbox_mem_pool);
1091
1092         spin_lock_irq(shost->host_lock);
1093         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1094         spin_unlock_irq(shost->host_lock);
1095
1096         lpfc_can_disctmo(vport);
1097
1098         /* turn on Link Attention interrupts */
1099
1100         spin_lock_irq(&phba->hbalock);
1101         psli->sli_flag |= LPFC_PROCESS_LA;
1102         control = readl(phba->HCregaddr);
1103         control |= HC_LAINT_ENA;
1104         writel(control, phba->HCregaddr);
1105         readl(phba->HCregaddr); /* flush */
1106         spin_unlock_irq(&phba->hbalock);
1107
1108         return;
1109 }
1110
1111
1112 static void
1113 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1114 {
1115         struct lpfc_vport *vport = pmb->vport;
1116
1117         if (pmb->u.mb.mbxStatus)
1118                 goto out;
1119
1120         mempool_free(pmb, phba->mbox_mem_pool);
1121
1122         /* don't perform discovery for SLI4 loopback diagnostic test */
1123         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1124             !(phba->hba_flag & HBA_FCOE_MODE) &&
1125             (phba->link_flag & LS_LOOPBACK_MODE))
1126                 return;
1127
1128         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1129             vport->fc_flag & FC_PUBLIC_LOOP &&
1130             !(vport->fc_flag & FC_LBIT)) {
1131                         /* Need to wait for FAN - use discovery timer
1132                          * for timeout.  port_state is identically
1133                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1134                          */
1135                         lpfc_set_disctmo(vport);
1136                         return;
1137         }
1138
1139         /* Start discovery by sending a FLOGI. port_state is identically
1140          * LPFC_FLOGI while waiting for FLOGI cmpl
1141          */
1142         if (vport->port_state != LPFC_FLOGI || vport->fc_flag & FC_PT2PT_PLOGI)
1143                 lpfc_initial_flogi(vport);
1144         return;
1145
1146 out:
1147         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1148                          "0306 CONFIG_LINK mbxStatus error x%x "
1149                          "HBA state x%x\n",
1150                          pmb->u.mb.mbxStatus, vport->port_state);
1151         mempool_free(pmb, phba->mbox_mem_pool);
1152
1153         lpfc_linkdown(phba);
1154
1155         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1156                          "0200 CONFIG_LINK bad hba state x%x\n",
1157                          vport->port_state);
1158
1159         lpfc_issue_clear_la(phba, vport);
1160         return;
1161 }
1162
1163 /**
1164  * lpfc_sli4_clear_fcf_rr_bmask
1165  * @phba pointer to the struct lpfc_hba for this port.
1166  * This fucnction resets the round robin bit mask and clears the
1167  * fcf priority list. The list deletions are done while holding the
1168  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1169  * from the lpfc_fcf_pri record.
1170  **/
1171 void
1172 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1173 {
1174         struct lpfc_fcf_pri *fcf_pri;
1175         struct lpfc_fcf_pri *next_fcf_pri;
1176         memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1177         spin_lock_irq(&phba->hbalock);
1178         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1179                                 &phba->fcf.fcf_pri_list, list) {
1180                 list_del_init(&fcf_pri->list);
1181                 fcf_pri->fcf_rec.flag = 0;
1182         }
1183         spin_unlock_irq(&phba->hbalock);
1184 }
1185 static void
1186 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1187 {
1188         struct lpfc_vport *vport = mboxq->vport;
1189
1190         if (mboxq->u.mb.mbxStatus) {
1191                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1192                          "2017 REG_FCFI mbxStatus error x%x "
1193                          "HBA state x%x\n",
1194                          mboxq->u.mb.mbxStatus, vport->port_state);
1195                 goto fail_out;
1196         }
1197
1198         /* Start FCoE discovery by sending a FLOGI. */
1199         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1200         /* Set the FCFI registered flag */
1201         spin_lock_irq(&phba->hbalock);
1202         phba->fcf.fcf_flag |= FCF_REGISTERED;
1203         spin_unlock_irq(&phba->hbalock);
1204
1205         /* If there is a pending FCoE event, restart FCF table scan. */
1206         if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1207                 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1208                 goto fail_out;
1209
1210         /* Mark successful completion of FCF table scan */
1211         spin_lock_irq(&phba->hbalock);
1212         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1213         phba->hba_flag &= ~FCF_TS_INPROG;
1214         if (vport->port_state != LPFC_FLOGI) {
1215                 phba->hba_flag |= FCF_RR_INPROG;
1216                 spin_unlock_irq(&phba->hbalock);
1217                 lpfc_issue_init_vfi(vport);
1218                 goto out;
1219         }
1220         spin_unlock_irq(&phba->hbalock);
1221         goto out;
1222
1223 fail_out:
1224         spin_lock_irq(&phba->hbalock);
1225         phba->hba_flag &= ~FCF_RR_INPROG;
1226         spin_unlock_irq(&phba->hbalock);
1227 out:
1228         mempool_free(mboxq, phba->mbox_mem_pool);
1229 }
1230
1231 /**
1232  * lpfc_fab_name_match - Check if the fcf fabric name match.
1233  * @fab_name: pointer to fabric name.
1234  * @new_fcf_record: pointer to fcf record.
1235  *
1236  * This routine compare the fcf record's fabric name with provided
1237  * fabric name. If the fabric name are identical this function
1238  * returns 1 else return 0.
1239  **/
1240 static uint32_t
1241 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1242 {
1243         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1244                 return 0;
1245         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1246                 return 0;
1247         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1248                 return 0;
1249         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1250                 return 0;
1251         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1252                 return 0;
1253         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1254                 return 0;
1255         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1256                 return 0;
1257         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1258                 return 0;
1259         return 1;
1260 }
1261
1262 /**
1263  * lpfc_sw_name_match - Check if the fcf switch name match.
1264  * @fab_name: pointer to fabric name.
1265  * @new_fcf_record: pointer to fcf record.
1266  *
1267  * This routine compare the fcf record's switch name with provided
1268  * switch name. If the switch name are identical this function
1269  * returns 1 else return 0.
1270  **/
1271 static uint32_t
1272 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1273 {
1274         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1275                 return 0;
1276         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1277                 return 0;
1278         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1279                 return 0;
1280         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1281                 return 0;
1282         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1283                 return 0;
1284         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1285                 return 0;
1286         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1287                 return 0;
1288         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1289                 return 0;
1290         return 1;
1291 }
1292
1293 /**
1294  * lpfc_mac_addr_match - Check if the fcf mac address match.
1295  * @mac_addr: pointer to mac address.
1296  * @new_fcf_record: pointer to fcf record.
1297  *
1298  * This routine compare the fcf record's mac address with HBA's
1299  * FCF mac address. If the mac addresses are identical this function
1300  * returns 1 else return 0.
1301  **/
1302 static uint32_t
1303 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1304 {
1305         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1306                 return 0;
1307         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1308                 return 0;
1309         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1310                 return 0;
1311         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1312                 return 0;
1313         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1314                 return 0;
1315         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1316                 return 0;
1317         return 1;
1318 }
1319
1320 static bool
1321 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1322 {
1323         return (curr_vlan_id == new_vlan_id);
1324 }
1325
1326 /**
1327  * lpfc_update_fcf_record - Update driver fcf record
1328  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1329  * @phba: pointer to lpfc hba data structure.
1330  * @fcf_index: Index for the lpfc_fcf_record.
1331  * @new_fcf_record: pointer to hba fcf record.
1332  *
1333  * This routine updates the driver FCF priority record from the new HBA FCF
1334  * record. This routine is called with the host lock held.
1335  **/
1336 static void
1337 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1338                                  struct fcf_record *new_fcf_record
1339                                  )
1340 {
1341         struct lpfc_fcf_pri *fcf_pri;
1342
1343         fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1344         fcf_pri->fcf_rec.fcf_index = fcf_index;
1345         /* FCF record priority */
1346         fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1347
1348 }
1349
1350 /**
1351  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1352  * @fcf: pointer to driver fcf record.
1353  * @new_fcf_record: pointer to fcf record.
1354  *
1355  * This routine copies the FCF information from the FCF
1356  * record to lpfc_hba data structure.
1357  **/
1358 static void
1359 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1360                      struct fcf_record *new_fcf_record)
1361 {
1362         /* Fabric name */
1363         fcf_rec->fabric_name[0] =
1364                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1365         fcf_rec->fabric_name[1] =
1366                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1367         fcf_rec->fabric_name[2] =
1368                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1369         fcf_rec->fabric_name[3] =
1370                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1371         fcf_rec->fabric_name[4] =
1372                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1373         fcf_rec->fabric_name[5] =
1374                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1375         fcf_rec->fabric_name[6] =
1376                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1377         fcf_rec->fabric_name[7] =
1378                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1379         /* Mac address */
1380         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1381         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1382         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1383         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1384         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1385         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1386         /* FCF record index */
1387         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1388         /* FCF record priority */
1389         fcf_rec->priority = new_fcf_record->fip_priority;
1390         /* Switch name */
1391         fcf_rec->switch_name[0] =
1392                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1393         fcf_rec->switch_name[1] =
1394                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1395         fcf_rec->switch_name[2] =
1396                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1397         fcf_rec->switch_name[3] =
1398                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1399         fcf_rec->switch_name[4] =
1400                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1401         fcf_rec->switch_name[5] =
1402                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1403         fcf_rec->switch_name[6] =
1404                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1405         fcf_rec->switch_name[7] =
1406                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1407 }
1408
1409 /**
1410  * lpfc_update_fcf_record - Update driver fcf record
1411  * @phba: pointer to lpfc hba data structure.
1412  * @fcf_rec: pointer to driver fcf record.
1413  * @new_fcf_record: pointer to hba fcf record.
1414  * @addr_mode: address mode to be set to the driver fcf record.
1415  * @vlan_id: vlan tag to be set to the driver fcf record.
1416  * @flag: flag bits to be set to the driver fcf record.
1417  *
1418  * This routine updates the driver FCF record from the new HBA FCF record
1419  * together with the address mode, vlan_id, and other informations. This
1420  * routine is called with the host lock held.
1421  **/
1422 static void
1423 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1424                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1425                        uint16_t vlan_id, uint32_t flag)
1426 {
1427         /* Copy the fields from the HBA's FCF record */
1428         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1429         /* Update other fields of driver FCF record */
1430         fcf_rec->addr_mode = addr_mode;
1431         fcf_rec->vlan_id = vlan_id;
1432         fcf_rec->flag |= (flag | RECORD_VALID);
1433         __lpfc_update_fcf_record_pri(phba,
1434                 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1435                                  new_fcf_record);
1436 }
1437
1438 /**
1439  * lpfc_register_fcf - Register the FCF with hba.
1440  * @phba: pointer to lpfc hba data structure.
1441  *
1442  * This routine issues a register fcfi mailbox command to register
1443  * the fcf with HBA.
1444  **/
1445 static void
1446 lpfc_register_fcf(struct lpfc_hba *phba)
1447 {
1448         LPFC_MBOXQ_t *fcf_mbxq;
1449         int rc;
1450
1451         spin_lock_irq(&phba->hbalock);
1452         /* If the FCF is not available do nothing. */
1453         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1454                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1455                 spin_unlock_irq(&phba->hbalock);
1456                 return;
1457         }
1458
1459         /* The FCF is already registered, start discovery */
1460         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1461                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1462                 phba->hba_flag &= ~FCF_TS_INPROG;
1463                 if (phba->pport->port_state != LPFC_FLOGI &&
1464                     phba->pport->fc_flag & FC_FABRIC) {
1465                         phba->hba_flag |= FCF_RR_INPROG;
1466                         spin_unlock_irq(&phba->hbalock);
1467                         lpfc_initial_flogi(phba->pport);
1468                         return;
1469                 }
1470                 spin_unlock_irq(&phba->hbalock);
1471                 return;
1472         }
1473         spin_unlock_irq(&phba->hbalock);
1474
1475         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1476         if (!fcf_mbxq) {
1477                 spin_lock_irq(&phba->hbalock);
1478                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1479                 spin_unlock_irq(&phba->hbalock);
1480                 return;
1481         }
1482
1483         lpfc_reg_fcfi(phba, fcf_mbxq);
1484         fcf_mbxq->vport = phba->pport;
1485         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1486         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1487         if (rc == MBX_NOT_FINISHED) {
1488                 spin_lock_irq(&phba->hbalock);
1489                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1490                 spin_unlock_irq(&phba->hbalock);
1491                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1492         }
1493
1494         return;
1495 }
1496
1497 /**
1498  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1499  * @phba: pointer to lpfc hba data structure.
1500  * @new_fcf_record: pointer to fcf record.
1501  * @boot_flag: Indicates if this record used by boot bios.
1502  * @addr_mode: The address mode to be used by this FCF
1503  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1504  *
1505  * This routine compare the fcf record with connect list obtained from the
1506  * config region to decide if this FCF can be used for SAN discovery. It returns
1507  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1508  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1509  * is used by boot bios and addr_mode will indicate the addressing mode to be
1510  * used for this FCF when the function returns.
1511  * If the FCF record need to be used with a particular vlan id, the vlan is
1512  * set in the vlan_id on return of the function. If not VLAN tagging need to
1513  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1514  **/
1515 static int
1516 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1517                         struct fcf_record *new_fcf_record,
1518                         uint32_t *boot_flag, uint32_t *addr_mode,
1519                         uint16_t *vlan_id)
1520 {
1521         struct lpfc_fcf_conn_entry *conn_entry;
1522         int i, j, fcf_vlan_id = 0;
1523
1524         /* Find the lowest VLAN id in the FCF record */
1525         for (i = 0; i < 512; i++) {
1526                 if (new_fcf_record->vlan_bitmap[i]) {
1527                         fcf_vlan_id = i * 8;
1528                         j = 0;
1529                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1530                                 j++;
1531                                 fcf_vlan_id++;
1532                         }
1533                         break;
1534                 }
1535         }
1536
1537         /* FCF not valid/available or solicitation in progress */
1538         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1539             !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1540             bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1541                 return 0;
1542
1543         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1544                 *boot_flag = 0;
1545                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1546                                 new_fcf_record);
1547                 if (phba->valid_vlan)
1548                         *vlan_id = phba->vlan_id;
1549                 else
1550                         *vlan_id = LPFC_FCOE_NULL_VID;
1551                 return 1;
1552         }
1553
1554         /*
1555          * If there are no FCF connection table entry, driver connect to all
1556          * FCFs.
1557          */
1558         if (list_empty(&phba->fcf_conn_rec_list)) {
1559                 *boot_flag = 0;
1560                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1561                         new_fcf_record);
1562
1563                 /*
1564                  * When there are no FCF connect entries, use driver's default
1565                  * addressing mode - FPMA.
1566                  */
1567                 if (*addr_mode & LPFC_FCF_FPMA)
1568                         *addr_mode = LPFC_FCF_FPMA;
1569
1570                 /* If FCF record report a vlan id use that vlan id */
1571                 if (fcf_vlan_id)
1572                         *vlan_id = fcf_vlan_id;
1573                 else
1574                         *vlan_id = LPFC_FCOE_NULL_VID;
1575                 return 1;
1576         }
1577
1578         list_for_each_entry(conn_entry,
1579                             &phba->fcf_conn_rec_list, list) {
1580                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1581                         continue;
1582
1583                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1584                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1585                                              new_fcf_record))
1586                         continue;
1587                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1588                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1589                                             new_fcf_record))
1590                         continue;
1591                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1592                         /*
1593                          * If the vlan bit map does not have the bit set for the
1594                          * vlan id to be used, then it is not a match.
1595                          */
1596                         if (!(new_fcf_record->vlan_bitmap
1597                                 [conn_entry->conn_rec.vlan_tag / 8] &
1598                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1599                                 continue;
1600                 }
1601
1602                 /*
1603                  * If connection record does not support any addressing mode,
1604                  * skip the FCF record.
1605                  */
1606                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1607                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1608                         continue;
1609
1610                 /*
1611                  * Check if the connection record specifies a required
1612                  * addressing mode.
1613                  */
1614                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1615                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1616
1617                         /*
1618                          * If SPMA required but FCF not support this continue.
1619                          */
1620                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1621                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1622                                         new_fcf_record) & LPFC_FCF_SPMA))
1623                                 continue;
1624
1625                         /*
1626                          * If FPMA required but FCF not support this continue.
1627                          */
1628                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1629                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1630                                 new_fcf_record) & LPFC_FCF_FPMA))
1631                                 continue;
1632                 }
1633
1634                 /*
1635                  * This fcf record matches filtering criteria.
1636                  */
1637                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1638                         *boot_flag = 1;
1639                 else
1640                         *boot_flag = 0;
1641
1642                 /*
1643                  * If user did not specify any addressing mode, or if the
1644                  * preferred addressing mode specified by user is not supported
1645                  * by FCF, allow fabric to pick the addressing mode.
1646                  */
1647                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1648                                 new_fcf_record);
1649                 /*
1650                  * If the user specified a required address mode, assign that
1651                  * address mode
1652                  */
1653                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1654                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1655                         *addr_mode = (conn_entry->conn_rec.flags &
1656                                 FCFCNCT_AM_SPMA) ?
1657                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1658                 /*
1659                  * If the user specified a preferred address mode, use the
1660                  * addr mode only if FCF support the addr_mode.
1661                  */
1662                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1663                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1664                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1665                         (*addr_mode & LPFC_FCF_SPMA))
1666                                 *addr_mode = LPFC_FCF_SPMA;
1667                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1668                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1669                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1670                         (*addr_mode & LPFC_FCF_FPMA))
1671                                 *addr_mode = LPFC_FCF_FPMA;
1672
1673                 /* If matching connect list has a vlan id, use it */
1674                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1675                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1676                 /*
1677                  * If no vlan id is specified in connect list, use the vlan id
1678                  * in the FCF record
1679                  */
1680                 else if (fcf_vlan_id)
1681                         *vlan_id = fcf_vlan_id;
1682                 else
1683                         *vlan_id = LPFC_FCOE_NULL_VID;
1684
1685                 return 1;
1686         }
1687
1688         return 0;
1689 }
1690
1691 /**
1692  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1693  * @phba: pointer to lpfc hba data structure.
1694  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1695  *
1696  * This function check if there is any fcoe event pending while driver
1697  * scan FCF entries. If there is any pending event, it will restart the
1698  * FCF saning and return 1 else return 0.
1699  */
1700 int
1701 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1702 {
1703         /*
1704          * If the Link is up and no FCoE events while in the
1705          * FCF discovery, no need to restart FCF discovery.
1706          */
1707         if ((phba->link_state  >= LPFC_LINK_UP) &&
1708             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1709                 return 0;
1710
1711         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1712                         "2768 Pending link or FCF event during current "
1713                         "handling of the previous event: link_state:x%x, "
1714                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1715                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1716                         phba->fcoe_eventtag);
1717
1718         spin_lock_irq(&phba->hbalock);
1719         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1720         spin_unlock_irq(&phba->hbalock);
1721
1722         if (phba->link_state >= LPFC_LINK_UP) {
1723                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1724                                 "2780 Restart FCF table scan due to "
1725                                 "pending FCF event:evt_tag_at_scan:x%x, "
1726                                 "evt_tag_current:x%x\n",
1727                                 phba->fcoe_eventtag_at_fcf_scan,
1728                                 phba->fcoe_eventtag);
1729                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1730         } else {
1731                 /*
1732                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1733                  * flag
1734                  */
1735                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1736                                 "2833 Stop FCF discovery process due to link "
1737                                 "state change (x%x)\n", phba->link_state);
1738                 spin_lock_irq(&phba->hbalock);
1739                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1740                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1741                 spin_unlock_irq(&phba->hbalock);
1742         }
1743
1744         /* Unregister the currently registered FCF if required */
1745         if (unreg_fcf) {
1746                 spin_lock_irq(&phba->hbalock);
1747                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1748                 spin_unlock_irq(&phba->hbalock);
1749                 lpfc_sli4_unregister_fcf(phba);
1750         }
1751         return 1;
1752 }
1753
1754 /**
1755  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1756  * @phba: pointer to lpfc hba data structure.
1757  * @fcf_cnt: number of eligible fcf record seen so far.
1758  *
1759  * This function makes an running random selection decision on FCF record to
1760  * use through a sequence of @fcf_cnt eligible FCF records with equal
1761  * probability. To perform integer manunipulation of random numbers with
1762  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1763  * from prandom_u32() are taken as the random random number generated.
1764  *
1765  * Returns true when outcome is for the newly read FCF record should be
1766  * chosen; otherwise, return false when outcome is for keeping the previously
1767  * chosen FCF record.
1768  **/
1769 static bool
1770 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1771 {
1772         uint32_t rand_num;
1773
1774         /* Get 16-bit uniform random number */
1775         rand_num = 0xFFFF & prandom_u32();
1776
1777         /* Decision with probability 1/fcf_cnt */
1778         if ((fcf_cnt * rand_num) < 0xFFFF)
1779                 return true;
1780         else
1781                 return false;
1782 }
1783
1784 /**
1785  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1786  * @phba: pointer to lpfc hba data structure.
1787  * @mboxq: pointer to mailbox object.
1788  * @next_fcf_index: pointer to holder of next fcf index.
1789  *
1790  * This routine parses the non-embedded fcf mailbox command by performing the
1791  * necessarily error checking, non-embedded read FCF record mailbox command
1792  * SGE parsing, and endianness swapping.
1793  *
1794  * Returns the pointer to the new FCF record in the non-embedded mailbox
1795  * command DMA memory if successfully, other NULL.
1796  */
1797 static struct fcf_record *
1798 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1799                              uint16_t *next_fcf_index)
1800 {
1801         void *virt_addr;
1802         dma_addr_t phys_addr;
1803         struct lpfc_mbx_sge sge;
1804         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1805         uint32_t shdr_status, shdr_add_status;
1806         union lpfc_sli4_cfg_shdr *shdr;
1807         struct fcf_record *new_fcf_record;
1808
1809         /* Get the first SGE entry from the non-embedded DMA memory. This
1810          * routine only uses a single SGE.
1811          */
1812         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1813         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1814         if (unlikely(!mboxq->sge_array)) {
1815                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1816                                 "2524 Failed to get the non-embedded SGE "
1817                                 "virtual address\n");
1818                 return NULL;
1819         }
1820         virt_addr = mboxq->sge_array->addr[0];
1821
1822         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1823         lpfc_sli_pcimem_bcopy(shdr, shdr,
1824                               sizeof(union lpfc_sli4_cfg_shdr));
1825         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1826         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1827         if (shdr_status || shdr_add_status) {
1828                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1829                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1830                                         "2726 READ_FCF_RECORD Indicates empty "
1831                                         "FCF table.\n");
1832                 else
1833                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1834                                         "2521 READ_FCF_RECORD mailbox failed "
1835                                         "with status x%x add_status x%x, "
1836                                         "mbx\n", shdr_status, shdr_add_status);
1837                 return NULL;
1838         }
1839
1840         /* Interpreting the returned information of the FCF record */
1841         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1842         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1843                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1844         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1845         new_fcf_record = (struct fcf_record *)(virt_addr +
1846                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1847         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1848                                 offsetof(struct fcf_record, vlan_bitmap));
1849         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1850         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1851
1852         return new_fcf_record;
1853 }
1854
1855 /**
1856  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1857  * @phba: pointer to lpfc hba data structure.
1858  * @fcf_record: pointer to the fcf record.
1859  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1860  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1861  *
1862  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1863  * enabled.
1864  **/
1865 static void
1866 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1867                               struct fcf_record *fcf_record,
1868                               uint16_t vlan_id,
1869                               uint16_t next_fcf_index)
1870 {
1871         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1872                         "2764 READ_FCF_RECORD:\n"
1873                         "\tFCF_Index     : x%x\n"
1874                         "\tFCF_Avail     : x%x\n"
1875                         "\tFCF_Valid     : x%x\n"
1876                         "\tFCF_SOL       : x%x\n"
1877                         "\tFIP_Priority  : x%x\n"
1878                         "\tMAC_Provider  : x%x\n"
1879                         "\tLowest VLANID : x%x\n"
1880                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1881                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1882                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1883                         "\tNext_FCF_Index: x%x\n",
1884                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1885                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1886                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1887                         bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1888                         fcf_record->fip_priority,
1889                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1890                         vlan_id,
1891                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1892                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1893                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1894                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1895                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1896                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1897                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1898                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1899                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1900                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1901                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1902                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1903                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1904                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1905                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1906                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1907                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1908                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1909                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1910                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1911                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1912                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1913                         next_fcf_index);
1914 }
1915
1916 /**
1917  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1918  * @phba: pointer to lpfc hba data structure.
1919  * @fcf_rec: pointer to an existing FCF record.
1920  * @new_fcf_record: pointer to a new FCF record.
1921  * @new_vlan_id: vlan id from the new FCF record.
1922  *
1923  * This function performs matching test of a new FCF record against an existing
1924  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1925  * will not be used as part of the FCF record matching criteria.
1926  *
1927  * Returns true if all the fields matching, otherwise returns false.
1928  */
1929 static bool
1930 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1931                            struct lpfc_fcf_rec *fcf_rec,
1932                            struct fcf_record *new_fcf_record,
1933                            uint16_t new_vlan_id)
1934 {
1935         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1936                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1937                         return false;
1938         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1939                 return false;
1940         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1941                 return false;
1942         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1943                 return false;
1944         if (fcf_rec->priority != new_fcf_record->fip_priority)
1945                 return false;
1946         return true;
1947 }
1948
1949 /**
1950  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1951  * @vport: Pointer to vport object.
1952  * @fcf_index: index to next fcf.
1953  *
1954  * This function processing the roundrobin fcf failover to next fcf index.
1955  * When this function is invoked, there will be a current fcf registered
1956  * for flogi.
1957  * Return: 0 for continue retrying flogi on currently registered fcf;
1958  *         1 for stop flogi on currently registered fcf;
1959  */
1960 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1961 {
1962         struct lpfc_hba *phba = vport->phba;
1963         int rc;
1964
1965         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1966                 spin_lock_irq(&phba->hbalock);
1967                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1968                         spin_unlock_irq(&phba->hbalock);
1969                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1970                                         "2872 Devloss tmo with no eligible "
1971                                         "FCF, unregister in-use FCF (x%x) "
1972                                         "and rescan FCF table\n",
1973                                         phba->fcf.current_rec.fcf_indx);
1974                         lpfc_unregister_fcf_rescan(phba);
1975                         goto stop_flogi_current_fcf;
1976                 }
1977                 /* Mark the end to FLOGI roundrobin failover */
1978                 phba->hba_flag &= ~FCF_RR_INPROG;
1979                 /* Allow action to new fcf asynchronous event */
1980                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1981                 spin_unlock_irq(&phba->hbalock);
1982                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1983                                 "2865 No FCF available, stop roundrobin FCF "
1984                                 "failover and change port state:x%x/x%x\n",
1985                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1986                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1987                 goto stop_flogi_current_fcf;
1988         } else {
1989                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1990                                 "2794 Try FLOGI roundrobin FCF failover to "
1991                                 "(x%x)\n", fcf_index);
1992                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1993                 if (rc)
1994                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1995                                         "2761 FLOGI roundrobin FCF failover "
1996                                         "failed (rc:x%x) to read FCF (x%x)\n",
1997                                         rc, phba->fcf.current_rec.fcf_indx);
1998                 else
1999                         goto stop_flogi_current_fcf;
2000         }
2001         return 0;
2002
2003 stop_flogi_current_fcf:
2004         lpfc_can_disctmo(vport);
2005         return 1;
2006 }
2007
2008 /**
2009  * lpfc_sli4_fcf_pri_list_del
2010  * @phba: pointer to lpfc hba data structure.
2011  * @fcf_index the index of the fcf record to delete
2012  * This routine checks the on list flag of the fcf_index to be deleted.
2013  * If it is one the list then it is removed from the list, and the flag
2014  * is cleared. This routine grab the hbalock before removing the fcf
2015  * record from the list.
2016  **/
2017 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2018                         uint16_t fcf_index)
2019 {
2020         struct lpfc_fcf_pri *new_fcf_pri;
2021
2022         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2023         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2024                 "3058 deleting idx x%x pri x%x flg x%x\n",
2025                 fcf_index, new_fcf_pri->fcf_rec.priority,
2026                  new_fcf_pri->fcf_rec.flag);
2027         spin_lock_irq(&phba->hbalock);
2028         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2029                 if (phba->fcf.current_rec.priority ==
2030                                 new_fcf_pri->fcf_rec.priority)
2031                         phba->fcf.eligible_fcf_cnt--;
2032                 list_del_init(&new_fcf_pri->list);
2033                 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2034         }
2035         spin_unlock_irq(&phba->hbalock);
2036 }
2037
2038 /**
2039  * lpfc_sli4_set_fcf_flogi_fail
2040  * @phba: pointer to lpfc hba data structure.
2041  * @fcf_index the index of the fcf record to update
2042  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2043  * flag so the the round robin slection for the particular priority level
2044  * will try a different fcf record that does not have this bit set.
2045  * If the fcf record is re-read for any reason this flag is cleared brfore
2046  * adding it to the priority list.
2047  **/
2048 void
2049 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2050 {
2051         struct lpfc_fcf_pri *new_fcf_pri;
2052         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2053         spin_lock_irq(&phba->hbalock);
2054         new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2055         spin_unlock_irq(&phba->hbalock);
2056 }
2057
2058 /**
2059  * lpfc_sli4_fcf_pri_list_add
2060  * @phba: pointer to lpfc hba data structure.
2061  * @fcf_index the index of the fcf record to add
2062  * This routine checks the priority of the fcf_index to be added.
2063  * If it is a lower priority than the current head of the fcf_pri list
2064  * then it is added to the list in the right order.
2065  * If it is the same priority as the current head of the list then it
2066  * is added to the head of the list and its bit in the rr_bmask is set.
2067  * If the fcf_index to be added is of a higher priority than the current
2068  * head of the list then the rr_bmask is cleared, its bit is set in the
2069  * rr_bmask and it is added to the head of the list.
2070  * returns:
2071  * 0=success 1=failure
2072  **/
2073 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2074         uint16_t fcf_index,
2075         struct fcf_record *new_fcf_record)
2076 {
2077         uint16_t current_fcf_pri;
2078         uint16_t last_index;
2079         struct lpfc_fcf_pri *fcf_pri;
2080         struct lpfc_fcf_pri *next_fcf_pri;
2081         struct lpfc_fcf_pri *new_fcf_pri;
2082         int ret;
2083
2084         new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2085         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2086                 "3059 adding idx x%x pri x%x flg x%x\n",
2087                 fcf_index, new_fcf_record->fip_priority,
2088                  new_fcf_pri->fcf_rec.flag);
2089         spin_lock_irq(&phba->hbalock);
2090         if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2091                 list_del_init(&new_fcf_pri->list);
2092         new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2093         new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2094         if (list_empty(&phba->fcf.fcf_pri_list)) {
2095                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2096                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2097                                 new_fcf_pri->fcf_rec.fcf_index);
2098                 goto out;
2099         }
2100
2101         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2102                                 LPFC_SLI4_FCF_TBL_INDX_MAX);
2103         if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2104                 ret = 0; /* Empty rr list */
2105                 goto out;
2106         }
2107         current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2108         if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2109                 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2110                 if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2111                         memset(phba->fcf.fcf_rr_bmask, 0,
2112                                 sizeof(*phba->fcf.fcf_rr_bmask));
2113                         /* fcfs_at_this_priority_level = 1; */
2114                         phba->fcf.eligible_fcf_cnt = 1;
2115                 } else
2116                         /* fcfs_at_this_priority_level++; */
2117                         phba->fcf.eligible_fcf_cnt++;
2118                 ret = lpfc_sli4_fcf_rr_index_set(phba,
2119                                 new_fcf_pri->fcf_rec.fcf_index);
2120                 goto out;
2121         }
2122
2123         list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2124                                 &phba->fcf.fcf_pri_list, list) {
2125                 if (new_fcf_pri->fcf_rec.priority <=
2126                                 fcf_pri->fcf_rec.priority) {
2127                         if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2128                                 list_add(&new_fcf_pri->list,
2129                                                 &phba->fcf.fcf_pri_list);
2130                         else
2131                                 list_add(&new_fcf_pri->list,
2132                                          &((struct lpfc_fcf_pri *)
2133                                         fcf_pri->list.prev)->list);
2134                         ret = 0;
2135                         goto out;
2136                 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2137                         || new_fcf_pri->fcf_rec.priority <
2138                                 next_fcf_pri->fcf_rec.priority) {
2139                         list_add(&new_fcf_pri->list, &fcf_pri->list);
2140                         ret = 0;
2141                         goto out;
2142                 }
2143                 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2144                         continue;
2145
2146         }
2147         ret = 1;
2148 out:
2149         /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2150         new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2151         spin_unlock_irq(&phba->hbalock);
2152         return ret;
2153 }
2154
2155 /**
2156  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2157  * @phba: pointer to lpfc hba data structure.
2158  * @mboxq: pointer to mailbox object.
2159  *
2160  * This function iterates through all the fcf records available in
2161  * HBA and chooses the optimal FCF record for discovery. After finding
2162  * the FCF for discovery it registers the FCF record and kicks start
2163  * discovery.
2164  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2165  * use an FCF record which matches fabric name and mac address of the
2166  * currently used FCF record.
2167  * If the driver supports only one FCF, it will try to use the FCF record
2168  * used by BOOT_BIOS.
2169  */
2170 void
2171 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2172 {
2173         struct fcf_record *new_fcf_record;
2174         uint32_t boot_flag, addr_mode;
2175         uint16_t fcf_index, next_fcf_index;
2176         struct lpfc_fcf_rec *fcf_rec = NULL;
2177         uint16_t vlan_id;
2178         bool select_new_fcf;
2179         int rc;
2180
2181         /* If there is pending FCoE event restart FCF table scan */
2182         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2183                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2184                 return;
2185         }
2186
2187         /* Parse the FCF record from the non-embedded mailbox command */
2188         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2189                                                       &next_fcf_index);
2190         if (!new_fcf_record) {
2191                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2192                                 "2765 Mailbox command READ_FCF_RECORD "
2193                                 "failed to retrieve a FCF record.\n");
2194                 /* Let next new FCF event trigger fast failover */
2195                 spin_lock_irq(&phba->hbalock);
2196                 phba->hba_flag &= ~FCF_TS_INPROG;
2197                 spin_unlock_irq(&phba->hbalock);
2198                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2199                 return;
2200         }
2201
2202         /* Check the FCF record against the connection list */
2203         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2204                                       &addr_mode, &vlan_id);
2205
2206         /* Log the FCF record information if turned on */
2207         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2208                                       next_fcf_index);
2209
2210         /*
2211          * If the fcf record does not match with connect list entries
2212          * read the next entry; otherwise, this is an eligible FCF
2213          * record for roundrobin FCF failover.
2214          */
2215         if (!rc) {
2216                 lpfc_sli4_fcf_pri_list_del(phba,
2217                                         bf_get(lpfc_fcf_record_fcf_index,
2218                                                new_fcf_record));
2219                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2220                                 "2781 FCF (x%x) failed connection "
2221                                 "list check: (x%x/x%x/%x)\n",
2222                                 bf_get(lpfc_fcf_record_fcf_index,
2223                                        new_fcf_record),
2224                                 bf_get(lpfc_fcf_record_fcf_avail,
2225                                        new_fcf_record),
2226                                 bf_get(lpfc_fcf_record_fcf_valid,
2227                                        new_fcf_record),
2228                                 bf_get(lpfc_fcf_record_fcf_sol,
2229                                        new_fcf_record));
2230                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2231                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2232                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2233                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2234                             phba->fcf.current_rec.fcf_indx) {
2235                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2236                                         "2862 FCF (x%x) matches property "
2237                                         "of in-use FCF (x%x)\n",
2238                                         bf_get(lpfc_fcf_record_fcf_index,
2239                                                new_fcf_record),
2240                                         phba->fcf.current_rec.fcf_indx);
2241                                 goto read_next_fcf;
2242                         }
2243                         /*
2244                          * In case the current in-use FCF record becomes
2245                          * invalid/unavailable during FCF discovery that
2246                          * was not triggered by fast FCF failover process,
2247                          * treat it as fast FCF failover.
2248                          */
2249                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2250                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2251                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2252                                                 "2835 Invalid in-use FCF "
2253                                                 "(x%x), enter FCF failover "
2254                                                 "table scan.\n",
2255                                                 phba->fcf.current_rec.fcf_indx);
2256                                 spin_lock_irq(&phba->hbalock);
2257                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2258                                 spin_unlock_irq(&phba->hbalock);
2259                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2260                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2261                                                 LPFC_FCOE_FCF_GET_FIRST);
2262                                 return;
2263                         }
2264                 }
2265                 goto read_next_fcf;
2266         } else {
2267                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2268                 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2269                                                         new_fcf_record);
2270                 if (rc)
2271                         goto read_next_fcf;
2272         }
2273
2274         /*
2275          * If this is not the first FCF discovery of the HBA, use last
2276          * FCF record for the discovery. The condition that a rescan
2277          * matches the in-use FCF record: fabric name, switch name, mac
2278          * address, and vlan_id.
2279          */
2280         spin_lock_irq(&phba->hbalock);
2281         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2282                 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2283                         lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2284                     new_fcf_record, vlan_id)) {
2285                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2286                             phba->fcf.current_rec.fcf_indx) {
2287                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2288                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2289                                         /* Stop FCF redisc wait timer */
2290                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2291                                                                         phba);
2292                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2293                                         /* Fast failover, mark completed */
2294                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2295                                 spin_unlock_irq(&phba->hbalock);
2296                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2297                                                 "2836 New FCF matches in-use "
2298                                                 "FCF (x%x), port_state:x%x, "
2299                                                 "fc_flag:x%x\n",
2300                                                 phba->fcf.current_rec.fcf_indx,
2301                                                 phba->pport->port_state,
2302                                                 phba->pport->fc_flag);
2303                                 goto out;
2304                         } else
2305                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2306                                         "2863 New FCF (x%x) matches "
2307                                         "property of in-use FCF (x%x)\n",
2308                                         bf_get(lpfc_fcf_record_fcf_index,
2309                                                new_fcf_record),
2310                                         phba->fcf.current_rec.fcf_indx);
2311                 }
2312                 /*
2313                  * Read next FCF record from HBA searching for the matching
2314                  * with in-use record only if not during the fast failover
2315                  * period. In case of fast failover period, it shall try to
2316                  * determine whether the FCF record just read should be the
2317                  * next candidate.
2318                  */
2319                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2320                         spin_unlock_irq(&phba->hbalock);
2321                         goto read_next_fcf;
2322                 }
2323         }
2324         /*
2325          * Update on failover FCF record only if it's in FCF fast-failover
2326          * period; otherwise, update on current FCF record.
2327          */
2328         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2329                 fcf_rec = &phba->fcf.failover_rec;
2330         else
2331                 fcf_rec = &phba->fcf.current_rec;
2332
2333         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2334                 /*
2335                  * If the driver FCF record does not have boot flag
2336                  * set and new hba fcf record has boot flag set, use
2337                  * the new hba fcf record.
2338                  */
2339                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2340                         /* Choose this FCF record */
2341                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2342                                         "2837 Update current FCF record "
2343                                         "(x%x) with new FCF record (x%x)\n",
2344                                         fcf_rec->fcf_indx,
2345                                         bf_get(lpfc_fcf_record_fcf_index,
2346                                         new_fcf_record));
2347                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2348                                         addr_mode, vlan_id, BOOT_ENABLE);
2349                         spin_unlock_irq(&phba->hbalock);
2350                         goto read_next_fcf;
2351                 }
2352                 /*
2353                  * If the driver FCF record has boot flag set and the
2354                  * new hba FCF record does not have boot flag, read
2355                  * the next FCF record.
2356                  */
2357                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2358                         spin_unlock_irq(&phba->hbalock);
2359                         goto read_next_fcf;
2360                 }
2361                 /*
2362                  * If the new hba FCF record has lower priority value
2363                  * than the driver FCF record, use the new record.
2364                  */
2365                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2366                         /* Choose the new FCF record with lower priority */
2367                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2368                                         "2838 Update current FCF record "
2369                                         "(x%x) with new FCF record (x%x)\n",
2370                                         fcf_rec->fcf_indx,
2371                                         bf_get(lpfc_fcf_record_fcf_index,
2372                                                new_fcf_record));
2373                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2374                                         addr_mode, vlan_id, 0);
2375                         /* Reset running random FCF selection count */
2376                         phba->fcf.eligible_fcf_cnt = 1;
2377                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2378                         /* Update running random FCF selection count */
2379                         phba->fcf.eligible_fcf_cnt++;
2380                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2381                                                 phba->fcf.eligible_fcf_cnt);
2382                         if (select_new_fcf) {
2383                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2384                                         "2839 Update current FCF record "
2385                                         "(x%x) with new FCF record (x%x)\n",
2386                                         fcf_rec->fcf_indx,
2387                                         bf_get(lpfc_fcf_record_fcf_index,
2388                                                new_fcf_record));
2389                                 /* Choose the new FCF by random selection */
2390                                 __lpfc_update_fcf_record(phba, fcf_rec,
2391                                                          new_fcf_record,
2392                                                          addr_mode, vlan_id, 0);
2393                         }
2394                 }
2395                 spin_unlock_irq(&phba->hbalock);
2396                 goto read_next_fcf;
2397         }
2398         /*
2399          * This is the first suitable FCF record, choose this record for
2400          * initial best-fit FCF.
2401          */
2402         if (fcf_rec) {
2403                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2404                                 "2840 Update initial FCF candidate "
2405                                 "with FCF (x%x)\n",
2406                                 bf_get(lpfc_fcf_record_fcf_index,
2407                                        new_fcf_record));
2408                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2409                                          addr_mode, vlan_id, (boot_flag ?
2410                                          BOOT_ENABLE : 0));
2411                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2412                 /* Setup initial running random FCF selection count */
2413                 phba->fcf.eligible_fcf_cnt = 1;
2414         }
2415         spin_unlock_irq(&phba->hbalock);
2416         goto read_next_fcf;
2417
2418 read_next_fcf:
2419         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2420         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2421                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2422                         /*
2423                          * Case of FCF fast failover scan
2424                          */
2425
2426                         /*
2427                          * It has not found any suitable FCF record, cancel
2428                          * FCF scan inprogress, and do nothing
2429                          */
2430                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2431                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2432                                                "2782 No suitable FCF found: "
2433                                                "(x%x/x%x)\n",
2434                                                phba->fcoe_eventtag_at_fcf_scan,
2435                                                bf_get(lpfc_fcf_record_fcf_index,
2436                                                       new_fcf_record));
2437                                 spin_lock_irq(&phba->hbalock);
2438                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2439                                         phba->hba_flag &= ~FCF_TS_INPROG;
2440                                         spin_unlock_irq(&phba->hbalock);
2441                                         /* Unregister in-use FCF and rescan */
2442                                         lpfc_printf_log(phba, KERN_INFO,
2443                                                         LOG_FIP,
2444                                                         "2864 On devloss tmo "
2445                                                         "unreg in-use FCF and "
2446                                                         "rescan FCF table\n");
2447                                         lpfc_unregister_fcf_rescan(phba);
2448                                         return;
2449                                 }
2450                                 /*
2451                                  * Let next new FCF event trigger fast failover
2452                                  */
2453                                 phba->hba_flag &= ~FCF_TS_INPROG;
2454                                 spin_unlock_irq(&phba->hbalock);
2455                                 return;
2456                         }
2457                         /*
2458                          * It has found a suitable FCF record that is not
2459                          * the same as in-use FCF record, unregister the
2460                          * in-use FCF record, replace the in-use FCF record
2461                          * with the new FCF record, mark FCF fast failover
2462                          * completed, and then start register the new FCF
2463                          * record.
2464                          */
2465
2466                         /* Unregister the current in-use FCF record */
2467                         lpfc_unregister_fcf(phba);
2468
2469                         /* Replace in-use record with the new record */
2470                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2471                                         "2842 Replace in-use FCF (x%x) "
2472                                         "with failover FCF (x%x)\n",
2473                                         phba->fcf.current_rec.fcf_indx,
2474                                         phba->fcf.failover_rec.fcf_indx);
2475                         memcpy(&phba->fcf.current_rec,
2476                                &phba->fcf.failover_rec,
2477                                sizeof(struct lpfc_fcf_rec));
2478                         /*
2479                          * Mark the fast FCF failover rediscovery completed
2480                          * and the start of the first round of the roundrobin
2481                          * FCF failover.
2482                          */
2483                         spin_lock_irq(&phba->hbalock);
2484                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2485                         spin_unlock_irq(&phba->hbalock);
2486                         /* Register to the new FCF record */
2487                         lpfc_register_fcf(phba);
2488                 } else {
2489                         /*
2490                          * In case of transaction period to fast FCF failover,
2491                          * do nothing when search to the end of the FCF table.
2492                          */
2493                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2494                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2495                                 return;
2496
2497                         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2498                                 phba->fcf.fcf_flag & FCF_IN_USE) {
2499                                 /*
2500                                  * In case the current in-use FCF record no
2501                                  * longer existed during FCF discovery that
2502                                  * was not triggered by fast FCF failover
2503                                  * process, treat it as fast FCF failover.
2504                                  */
2505                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2506                                                 "2841 In-use FCF record (x%x) "
2507                                                 "not reported, entering fast "
2508                                                 "FCF failover mode scanning.\n",
2509                                                 phba->fcf.current_rec.fcf_indx);
2510                                 spin_lock_irq(&phba->hbalock);
2511                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2512                                 spin_unlock_irq(&phba->hbalock);
2513                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2514                                                 LPFC_FCOE_FCF_GET_FIRST);
2515                                 return;
2516                         }
2517                         /* Register to the new FCF record */
2518                         lpfc_register_fcf(phba);
2519                 }
2520         } else
2521                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2522         return;
2523
2524 out:
2525         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2526         lpfc_register_fcf(phba);
2527
2528         return;
2529 }
2530
2531 /**
2532  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2533  * @phba: pointer to lpfc hba data structure.
2534  * @mboxq: pointer to mailbox object.
2535  *
2536  * This is the callback function for FLOGI failure roundrobin FCF failover
2537  * read FCF record mailbox command from the eligible FCF record bmask for
2538  * performing the failover. If the FCF read back is not valid/available, it
2539  * fails through to retrying FLOGI to the currently registered FCF again.
2540  * Otherwise, if the FCF read back is valid and available, it will set the
2541  * newly read FCF record to the failover FCF record, unregister currently
2542  * registered FCF record, copy the failover FCF record to the current
2543  * FCF record, and then register the current FCF record before proceeding
2544  * to trying FLOGI on the new failover FCF.
2545  */
2546 void
2547 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2548 {
2549         struct fcf_record *new_fcf_record;
2550         uint32_t boot_flag, addr_mode;
2551         uint16_t next_fcf_index, fcf_index;
2552         uint16_t current_fcf_index;
2553         uint16_t vlan_id;
2554         int rc;
2555
2556         /* If link state is not up, stop the roundrobin failover process */
2557         if (phba->link_state < LPFC_LINK_UP) {
2558                 spin_lock_irq(&phba->hbalock);
2559                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2560                 phba->hba_flag &= ~FCF_RR_INPROG;
2561                 spin_unlock_irq(&phba->hbalock);
2562                 goto out;
2563         }
2564
2565         /* Parse the FCF record from the non-embedded mailbox command */
2566         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2567                                                       &next_fcf_index);
2568         if (!new_fcf_record) {
2569                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2570                                 "2766 Mailbox command READ_FCF_RECORD "
2571                                 "failed to retrieve a FCF record. "
2572                                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2573                                 phba->fcf.fcf_flag);
2574                 lpfc_unregister_fcf_rescan(phba);
2575                 goto out;
2576         }
2577
2578         /* Get the needed parameters from FCF record */
2579         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2580                                       &addr_mode, &vlan_id);
2581
2582         /* Log the FCF record information if turned on */
2583         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2584                                       next_fcf_index);
2585
2586         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2587         if (!rc) {
2588                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2589                                 "2848 Remove ineligible FCF (x%x) from "
2590                                 "from roundrobin bmask\n", fcf_index);
2591                 /* Clear roundrobin bmask bit for ineligible FCF */
2592                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2593                 /* Perform next round of roundrobin FCF failover */
2594                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2595                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2596                 if (rc)
2597                         goto out;
2598                 goto error_out;
2599         }
2600
2601         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2602                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2603                                 "2760 Perform FLOGI roundrobin FCF failover: "
2604                                 "FCF (x%x) back to FCF (x%x)\n",
2605                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2606                 /* Wait 500 ms before retrying FLOGI to current FCF */
2607                 msleep(500);
2608                 lpfc_issue_init_vfi(phba->pport);
2609                 goto out;
2610         }
2611
2612         /* Upload new FCF record to the failover FCF record */
2613         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2614                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2615                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2616         spin_lock_irq(&phba->hbalock);
2617         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2618                                  new_fcf_record, addr_mode, vlan_id,
2619                                  (boot_flag ? BOOT_ENABLE : 0));
2620         spin_unlock_irq(&phba->hbalock);
2621
2622         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2623
2624         /* Unregister the current in-use FCF record */
2625         lpfc_unregister_fcf(phba);
2626
2627         /* Replace in-use record with the new record */
2628         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2629                sizeof(struct lpfc_fcf_rec));
2630
2631         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2632                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2633                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2634
2635 error_out:
2636         lpfc_register_fcf(phba);
2637 out:
2638         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2639 }
2640
2641 /**
2642  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2643  * @phba: pointer to lpfc hba data structure.
2644  * @mboxq: pointer to mailbox object.
2645  *
2646  * This is the callback function of read FCF record mailbox command for
2647  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2648  * failover when a new FCF event happened. If the FCF read back is
2649  * valid/available and it passes the connection list check, it updates
2650  * the bmask for the eligible FCF record for roundrobin failover.
2651  */
2652 void
2653 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2654 {
2655         struct fcf_record *new_fcf_record;
2656         uint32_t boot_flag, addr_mode;
2657         uint16_t fcf_index, next_fcf_index;
2658         uint16_t vlan_id;
2659         int rc;
2660
2661         /* If link state is not up, no need to proceed */
2662         if (phba->link_state < LPFC_LINK_UP)
2663                 goto out;
2664
2665         /* If FCF discovery period is over, no need to proceed */
2666         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2667                 goto out;
2668
2669         /* Parse the FCF record from the non-embedded mailbox command */
2670         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2671                                                       &next_fcf_index);
2672         if (!new_fcf_record) {
2673                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2674                                 "2767 Mailbox command READ_FCF_RECORD "
2675                                 "failed to retrieve a FCF record.\n");
2676                 goto out;
2677         }
2678
2679         /* Check the connection list for eligibility */
2680         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2681                                       &addr_mode, &vlan_id);
2682
2683         /* Log the FCF record information if turned on */
2684         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2685                                       next_fcf_index);
2686
2687         if (!rc)
2688                 goto out;
2689
2690         /* Update the eligible FCF record index bmask */
2691         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2692
2693         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2694
2695 out:
2696         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2697 }
2698
2699 /**
2700  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2701  * @phba: pointer to lpfc hba data structure.
2702  * @mboxq: pointer to mailbox data structure.
2703  *
2704  * This function handles completion of init vfi mailbox command.
2705  */
2706 static void
2707 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2708 {
2709         struct lpfc_vport *vport = mboxq->vport;
2710
2711         /*
2712          * VFI not supported on interface type 0, just do the flogi
2713          * Also continue if the VFI is in use - just use the same one.
2714          */
2715         if (mboxq->u.mb.mbxStatus &&
2716             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2717                         LPFC_SLI_INTF_IF_TYPE_0) &&
2718             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2719                 lpfc_printf_vlog(vport, KERN_ERR,
2720                                 LOG_MBOX,
2721                                 "2891 Init VFI mailbox failed 0x%x\n",
2722                                 mboxq->u.mb.mbxStatus);
2723                 mempool_free(mboxq, phba->mbox_mem_pool);
2724                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2725                 return;
2726         }
2727
2728         lpfc_initial_flogi(vport);
2729         mempool_free(mboxq, phba->mbox_mem_pool);
2730         return;
2731 }
2732
2733 /**
2734  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2735  * @vport: pointer to lpfc_vport data structure.
2736  *
2737  * This function issue a init_vfi mailbox command to initialize the VFI and
2738  * VPI for the physical port.
2739  */
2740 void
2741 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2742 {
2743         LPFC_MBOXQ_t *mboxq;
2744         int rc;
2745         struct lpfc_hba *phba = vport->phba;
2746
2747         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2748         if (!mboxq) {
2749                 lpfc_printf_vlog(vport, KERN_ERR,
2750                         LOG_MBOX, "2892 Failed to allocate "
2751                         "init_vfi mailbox\n");
2752                 return;
2753         }
2754         lpfc_init_vfi(mboxq, vport);
2755         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2756         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2757         if (rc == MBX_NOT_FINISHED) {
2758                 lpfc_printf_vlog(vport, KERN_ERR,
2759                         LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2760                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2761         }
2762 }
2763
2764 /**
2765  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2766  * @phba: pointer to lpfc hba data structure.
2767  * @mboxq: pointer to mailbox data structure.
2768  *
2769  * This function handles completion of init vpi mailbox command.
2770  */
2771 void
2772 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2773 {
2774         struct lpfc_vport *vport = mboxq->vport;
2775         struct lpfc_nodelist *ndlp;
2776         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2777
2778         if (mboxq->u.mb.mbxStatus) {
2779                 lpfc_printf_vlog(vport, KERN_ERR,
2780                                 LOG_MBOX,
2781                                 "2609 Init VPI mailbox failed 0x%x\n",
2782                                 mboxq->u.mb.mbxStatus);
2783                 mempool_free(mboxq, phba->mbox_mem_pool);
2784                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2785                 return;
2786         }
2787         spin_lock_irq(shost->host_lock);
2788         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2789         spin_unlock_irq(shost->host_lock);
2790
2791         /* If this port is physical port or FDISC is done, do reg_vpi */
2792         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2793                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2794                         if (!ndlp)
2795                                 lpfc_printf_vlog(vport, KERN_ERR,
2796                                         LOG_DISCOVERY,
2797                                         "2731 Cannot find fabric "
2798                                         "controller node\n");
2799                         else
2800                                 lpfc_register_new_vport(phba, vport, ndlp);
2801                         mempool_free(mboxq, phba->mbox_mem_pool);
2802                         return;
2803         }
2804
2805         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2806                 lpfc_initial_fdisc(vport);
2807         else {
2808                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2809                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2810                                  "2606 No NPIV Fabric support\n");
2811         }
2812         mempool_free(mboxq, phba->mbox_mem_pool);
2813         return;
2814 }
2815
2816 /**
2817  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2818  * @vport: pointer to lpfc_vport data structure.
2819  *
2820  * This function issue a init_vpi mailbox command to initialize
2821  * VPI for the vport.
2822  */
2823 void
2824 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2825 {
2826         LPFC_MBOXQ_t *mboxq;
2827         int rc, vpi;
2828
2829         if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2830                 vpi = lpfc_alloc_vpi(vport->phba);
2831                 if (!vpi) {
2832                         lpfc_printf_vlog(vport, KERN_ERR,
2833                                          LOG_MBOX,
2834                                          "3303 Failed to obtain vport vpi\n");
2835                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2836                         return;
2837                 }
2838                 vport->vpi = vpi;
2839         }
2840
2841         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2842         if (!mboxq) {
2843                 lpfc_printf_vlog(vport, KERN_ERR,
2844                         LOG_MBOX, "2607 Failed to allocate "
2845                         "init_vpi mailbox\n");
2846                 return;
2847         }
2848         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2849         mboxq->vport = vport;
2850         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2851         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2852         if (rc == MBX_NOT_FINISHED) {
2853                 lpfc_printf_vlog(vport, KERN_ERR,
2854                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2855                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2856         }
2857 }
2858
2859 /**
2860  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2861  * @phba: pointer to lpfc hba data structure.
2862  *
2863  * This function loops through the list of vports on the @phba and issues an
2864  * FDISC if possible.
2865  */
2866 void
2867 lpfc_start_fdiscs(struct lpfc_hba *phba)
2868 {
2869         struct lpfc_vport **vports;
2870         int i;
2871
2872         vports = lpfc_create_vport_work_array(phba);
2873         if (vports != NULL) {
2874                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2875                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2876                                 continue;
2877                         /* There are no vpi for this vport */
2878                         if (vports[i]->vpi > phba->max_vpi) {
2879                                 lpfc_vport_set_state(vports[i],
2880                                                      FC_VPORT_FAILED);
2881                                 continue;
2882                         }
2883                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2884                                 lpfc_vport_set_state(vports[i],
2885                                                      FC_VPORT_LINKDOWN);
2886                                 continue;
2887                         }
2888                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2889                                 lpfc_issue_init_vpi(vports[i]);
2890                                 continue;
2891                         }
2892                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2893                                 lpfc_initial_fdisc(vports[i]);
2894                         else {
2895                                 lpfc_vport_set_state(vports[i],
2896                                                      FC_VPORT_NO_FABRIC_SUPP);
2897                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2898                                                  LOG_ELS,
2899                                                  "0259 No NPIV "
2900                                                  "Fabric support\n");
2901                         }
2902                 }
2903         }
2904         lpfc_destroy_vport_work_array(phba, vports);
2905 }
2906
2907 void
2908 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2909 {
2910         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2911         struct lpfc_vport *vport = mboxq->vport;
2912         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2913
2914         /*
2915          * VFI not supported for interface type 0, so ignore any mailbox
2916          * error (except VFI in use) and continue with the discovery.
2917          */
2918         if (mboxq->u.mb.mbxStatus &&
2919             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2920                         LPFC_SLI_INTF_IF_TYPE_0) &&
2921             mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2922                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2923                          "2018 REG_VFI mbxStatus error x%x "
2924                          "HBA state x%x\n",
2925                          mboxq->u.mb.mbxStatus, vport->port_state);
2926                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2927                         /* FLOGI failed, use loop map to make discovery list */
2928                         lpfc_disc_list_loopmap(vport);
2929                         /* Start discovery */
2930                         lpfc_disc_start(vport);
2931                         goto out_free_mem;
2932                 }
2933                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2934                 goto out_free_mem;
2935         }
2936
2937         /* If the VFI is already registered, there is nothing else to do
2938          * Unless this was a VFI update and we are in PT2PT mode, then
2939          * we should drop through to set the port state to ready.
2940          */
2941         if (vport->fc_flag & FC_VFI_REGISTERED)
2942                 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
2943                       vport->fc_flag & FC_PT2PT))
2944                         goto out_free_mem;
2945
2946         /* The VPI is implicitly registered when the VFI is registered */
2947         spin_lock_irq(shost->host_lock);
2948         vport->vpi_state |= LPFC_VPI_REGISTERED;
2949         vport->fc_flag |= FC_VFI_REGISTERED;
2950         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2951         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2952         spin_unlock_irq(shost->host_lock);
2953
2954         /* In case SLI4 FC loopback test, we are ready */
2955         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2956             (phba->link_flag & LS_LOOPBACK_MODE)) {
2957                 phba->link_state = LPFC_HBA_READY;
2958                 goto out_free_mem;
2959         }
2960
2961         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
2962                          "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
2963                          "alpacnt:%d LinkState:%x topology:%x\n",
2964                          vport->port_state, vport->fc_flag, vport->fc_myDID,
2965                          vport->phba->alpa_map[0],
2966                          phba->link_state, phba->fc_topology);
2967
2968         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2969                 /*
2970                  * For private loop or for NPort pt2pt,
2971                  * just start discovery and we are done.
2972                  */
2973                 if ((vport->fc_flag & FC_PT2PT) ||
2974                     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2975                     !(vport->fc_flag & FC_PUBLIC_LOOP))) {
2976
2977                         /* Use loop map to make discovery list */
2978                         lpfc_disc_list_loopmap(vport);
2979                         /* Start discovery */
2980                         if (vport->fc_flag & FC_PT2PT)
2981                                 vport->port_state = LPFC_VPORT_READY;
2982                         else
2983                                 lpfc_disc_start(vport);
2984                 } else {
2985                         lpfc_start_fdiscs(phba);
2986                         lpfc_do_scr_ns_plogi(phba, vport);
2987                 }
2988         }
2989
2990 out_free_mem:
2991         mempool_free(mboxq, phba->mbox_mem_pool);
2992         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2993         kfree(dmabuf);
2994         return;
2995 }
2996
2997 static void
2998 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2999 {
3000         MAILBOX_t *mb = &pmb->u.mb;
3001         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
3002         struct lpfc_vport  *vport = pmb->vport;
3003
3004
3005         /* Check for error */
3006         if (mb->mbxStatus) {
3007                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3008                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3009                                  "0319 READ_SPARAM mbxStatus error x%x "
3010                                  "hba state x%x>\n",
3011                                  mb->mbxStatus, vport->port_state);
3012                 lpfc_linkdown(phba);
3013                 goto out;
3014         }
3015
3016         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3017                sizeof (struct serv_parm));
3018         lpfc_update_vport_wwn(vport);
3019         if (vport->port_type == LPFC_PHYSICAL_PORT) {
3020                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3021                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3022         }
3023
3024         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3025         kfree(mp);
3026         mempool_free(pmb, phba->mbox_mem_pool);
3027         return;
3028
3029 out:
3030         pmb->context1 = NULL;
3031         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3032         kfree(mp);
3033         lpfc_issue_clear_la(phba, vport);
3034         mempool_free(pmb, phba->mbox_mem_pool);
3035         return;
3036 }
3037
3038 static void
3039 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3040 {
3041         struct lpfc_vport *vport = phba->pport;
3042         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3043         struct Scsi_Host *shost;
3044         int i;
3045         struct lpfc_dmabuf *mp;
3046         int rc;
3047         struct fcf_record *fcf_record;
3048         uint32_t fc_flags = 0;
3049
3050         spin_lock_irq(&phba->hbalock);
3051         switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3052         case LPFC_LINK_SPEED_1GHZ:
3053         case LPFC_LINK_SPEED_2GHZ:
3054         case LPFC_LINK_SPEED_4GHZ:
3055         case LPFC_LINK_SPEED_8GHZ:
3056         case LPFC_LINK_SPEED_10GHZ:
3057         case LPFC_LINK_SPEED_16GHZ:
3058                 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3059                 break;
3060         default:
3061                 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3062                 break;
3063         }
3064
3065         if (phba->fc_topology &&
3066             phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3067                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3068                                 "3314 Toplogy changed was 0x%x is 0x%x\n",
3069                                 phba->fc_topology,
3070                                 bf_get(lpfc_mbx_read_top_topology, la));
3071                 phba->fc_topology_changed = 1;
3072         }
3073
3074         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3075         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3076
3077         shost = lpfc_shost_from_vport(vport);
3078         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3079                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3080
3081                 /* if npiv is enabled and this adapter supports npiv log
3082                  * a message that npiv is not supported in this topology
3083                  */
3084                 if (phba->cfg_enable_npiv && phba->max_vpi)
3085                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3086                                 "1309 Link Up Event npiv not supported in loop "
3087                                 "topology\n");
3088                                 /* Get Loop Map information */
3089                 if (bf_get(lpfc_mbx_read_top_il, la))
3090                         fc_flags |= FC_LBIT;
3091
3092                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3093                 i = la->lilpBde64.tus.f.bdeSize;
3094
3095                 if (i == 0) {
3096                         phba->alpa_map[0] = 0;
3097                 } else {
3098                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3099                                 int numalpa, j, k;
3100                                 union {
3101                                         uint8_t pamap[16];
3102                                         struct {
3103                                                 uint32_t wd1;
3104                                                 uint32_t wd2;
3105                                                 uint32_t wd3;
3106                                                 uint32_t wd4;
3107                                         } pa;
3108                                 } un;
3109                                 numalpa = phba->alpa_map[0];
3110                                 j = 0;
3111                                 while (j < numalpa) {
3112                                         memset(un.pamap, 0, 16);
3113                                         for (k = 1; j < numalpa; k++) {
3114                                                 un.pamap[k - 1] =
3115                                                         phba->alpa_map[j + 1];
3116                                                 j++;
3117                                                 if (k == 16)
3118                                                         break;
3119                                         }
3120                                         /* Link Up Event ALPA map */
3121                                         lpfc_printf_log(phba,
3122                                                         KERN_WARNING,
3123                                                         LOG_LINK_EVENT,
3124                                                         "1304 Link Up Event "
3125                                                         "ALPA map Data: x%x "
3126                                                         "x%x x%x x%x\n",
3127                                                         un.pa.wd1, un.pa.wd2,
3128                                                         un.pa.wd3, un.pa.wd4);
3129                                 }
3130                         }
3131                 }
3132         } else {
3133                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3134                         if (phba->max_vpi && phba->cfg_enable_npiv &&
3135                            (phba->sli_rev >= LPFC_SLI_REV3))
3136                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3137                 }
3138                 vport->fc_myDID = phba->fc_pref_DID;
3139                 fc_flags |= FC_LBIT;
3140         }
3141         spin_unlock_irq(&phba->hbalock);
3142
3143         if (fc_flags) {
3144                 spin_lock_irq(shost->host_lock);
3145                 vport->fc_flag |= fc_flags;
3146                 spin_unlock_irq(shost->host_lock);
3147         }
3148
3149         lpfc_linkup(phba);
3150         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3151         if (!sparam_mbox)
3152                 goto out;
3153
3154         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3155         if (rc) {
3156                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3157                 goto out;
3158         }
3159         sparam_mbox->vport = vport;
3160         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3161         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3162         if (rc == MBX_NOT_FINISHED) {
3163                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
3164                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3165                 kfree(mp);
3166                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3167                 goto out;
3168         }
3169
3170         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3171                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3172                 if (!cfglink_mbox)
3173                         goto out;
3174                 vport->port_state = LPFC_LOCAL_CFG_LINK;
3175                 lpfc_config_link(phba, cfglink_mbox);
3176                 cfglink_mbox->vport = vport;
3177                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3178                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3179                 if (rc == MBX_NOT_FINISHED) {
3180                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3181                         goto out;
3182                 }
3183         } else {
3184                 vport->port_state = LPFC_VPORT_UNKNOWN;
3185                 /*
3186                  * Add the driver's default FCF record at FCF index 0 now. This
3187                  * is phase 1 implementation that support FCF index 0 and driver
3188                  * defaults.
3189                  */
3190                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3191                         fcf_record = kzalloc(sizeof(struct fcf_record),
3192                                         GFP_KERNEL);
3193                         if (unlikely(!fcf_record)) {
3194                                 lpfc_printf_log(phba, KERN_ERR,
3195                                         LOG_MBOX | LOG_SLI,
3196                                         "2554 Could not allocate memory for "
3197                                         "fcf record\n");
3198                                 rc = -ENODEV;
3199                                 goto out;
3200                         }
3201
3202                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3203                                                 LPFC_FCOE_FCF_DEF_INDEX);
3204                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3205                         if (unlikely(rc)) {
3206                                 lpfc_printf_log(phba, KERN_ERR,
3207                                         LOG_MBOX | LOG_SLI,
3208                                         "2013 Could not manually add FCF "
3209                                         "record 0, status %d\n", rc);
3210                                 rc = -ENODEV;
3211                                 kfree(fcf_record);
3212                                 goto out;
3213                         }
3214                         kfree(fcf_record);
3215                 }
3216                 /*
3217                  * The driver is expected to do FIP/FCF. Call the port
3218                  * and get the FCF Table.
3219                  */
3220                 spin_lock_irq(&phba->hbalock);
3221                 if (phba->hba_flag & FCF_TS_INPROG) {
3222                         spin_unlock_irq(&phba->hbalock);
3223                         return;
3224                 }
3225                 /* This is the initial FCF discovery scan */
3226                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3227                 spin_unlock_irq(&phba->hbalock);
3228                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3229                                 "2778 Start FCF table scan at linkup\n");
3230                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3231                                                      LPFC_FCOE_FCF_GET_FIRST);
3232                 if (rc) {
3233                         spin_lock_irq(&phba->hbalock);
3234                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3235                         spin_unlock_irq(&phba->hbalock);
3236                         goto out;
3237                 }
3238                 /* Reset FCF roundrobin bmask for new discovery */
3239                 lpfc_sli4_clear_fcf_rr_bmask(phba);
3240         }
3241
3242         return;
3243 out:
3244         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3245         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3246                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
3247                          vport->port_state, sparam_mbox, cfglink_mbox);
3248         lpfc_issue_clear_la(phba, vport);
3249         return;
3250 }
3251
3252 static void
3253 lpfc_enable_la(struct lpfc_hba *phba)
3254 {
3255         uint32_t control;
3256         struct lpfc_sli *psli = &phba->sli;
3257         spin_lock_irq(&phba->hbalock);
3258         psli->sli_flag |= LPFC_PROCESS_LA;
3259         if (phba->sli_rev <= LPFC_SLI_REV3) {
3260                 control = readl(phba->HCregaddr);
3261                 control |= HC_LAINT_ENA;
3262                 writel(control, phba->HCregaddr);
3263                 readl(phba->HCregaddr); /* flush */
3264         }
3265         spin_unlock_irq(&phba->hbalock);
3266 }
3267
3268 static void
3269 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3270 {
3271         lpfc_linkdown(phba);
3272         lpfc_enable_la(phba);
3273         lpfc_unregister_unused_fcf(phba);
3274         /* turn on Link Attention interrupts - no CLEAR_LA needed */
3275 }
3276
3277
3278 /*
3279  * This routine handles processing a READ_TOPOLOGY mailbox
3280  * command upon completion. It is setup in the LPFC_MBOXQ
3281  * as the completion routine when the command is
3282  * handed off to the SLI layer.
3283  */
3284 void
3285 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3286 {
3287         struct lpfc_vport *vport = pmb->vport;
3288         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3289         struct lpfc_mbx_read_top *la;
3290         MAILBOX_t *mb = &pmb->u.mb;
3291         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3292
3293         /* Unblock ELS traffic */
3294         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
3295         /* Check for error */
3296         if (mb->mbxStatus) {
3297                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3298                                 "1307 READ_LA mbox error x%x state x%x\n",
3299                                 mb->mbxStatus, vport->port_state);
3300                 lpfc_mbx_issue_link_down(phba);
3301                 phba->link_state = LPFC_HBA_ERROR;
3302                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3303         }
3304
3305         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3306
3307         memcpy(&phba->alpa_map[0], mp->virt, 128);
3308
3309         spin_lock_irq(shost->host_lock);
3310         if (bf_get(lpfc_mbx_read_top_pb, la))
3311                 vport->fc_flag |= FC_BYPASSED_MODE;
3312         else
3313                 vport->fc_flag &= ~FC_BYPASSED_MODE;
3314         spin_unlock_irq(shost->host_lock);
3315
3316         if (phba->fc_eventTag <= la->eventTag) {
3317                 phba->fc_stat.LinkMultiEvent++;
3318                 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
3319                         if (phba->fc_eventTag != 0)
3320                                 lpfc_linkdown(phba);
3321         }
3322
3323         phba->fc_eventTag = la->eventTag;
3324         if (phba->sli_rev < LPFC_SLI_REV4) {
3325                 spin_lock_irq(&phba->hbalock);
3326                 if (bf_get(lpfc_mbx_read_top_mm, la))
3327                         phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3328                 else
3329                         phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3330                 spin_unlock_irq(&phba->hbalock);
3331         }
3332
3333         phba->link_events++;
3334         if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
3335             !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3336                 phba->fc_stat.LinkUp++;
3337                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3338                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3339                                         "1306 Link Up Event in loop back mode "
3340                                         "x%x received Data: x%x x%x x%x x%x\n",
3341                                         la->eventTag, phba->fc_eventTag,
3342                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3343                                                la),
3344                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3345                                         phba->alpa_map[0]);
3346                 } else {
3347                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3348                                         "1303 Link Up Event x%x received "
3349                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3350                                         la->eventTag, phba->fc_eventTag,
3351                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3352                                                la),
3353                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3354                                         phba->alpa_map[0],
3355                                         bf_get(lpfc_mbx_read_top_mm, la),
3356                                         bf_get(lpfc_mbx_read_top_fa, la),
3357                                         phba->wait_4_mlo_maint_flg);
3358                 }
3359                 lpfc_mbx_process_link_up(phba, la);
3360         } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3361                    LPFC_ATT_LINK_DOWN) {
3362                 phba->fc_stat.LinkDown++;
3363                 if (phba->link_flag & LS_LOOPBACK_MODE)
3364                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3365                                 "1308 Link Down Event in loop back mode "
3366                                 "x%x received "
3367                                 "Data: x%x x%x x%x\n",
3368                                 la->eventTag, phba->fc_eventTag,
3369                                 phba->pport->port_state, vport->fc_flag);
3370                 else
3371                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3372                                 "1305 Link Down Event x%x received "
3373                                 "Data: x%x x%x x%x x%x x%x\n",
3374                                 la->eventTag, phba->fc_eventTag,
3375                                 phba->pport->port_state, vport->fc_flag,
3376                                 bf_get(lpfc_mbx_read_top_mm, la),
3377                                 bf_get(lpfc_mbx_read_top_fa, la));
3378                 lpfc_mbx_issue_link_down(phba);
3379         }
3380         if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) &&
3381             ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) {
3382                 if (phba->link_state != LPFC_LINK_DOWN) {
3383                         phba->fc_stat.LinkDown++;
3384                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3385                                 "1312 Link Down Event x%x received "
3386                                 "Data: x%x x%x x%x\n",
3387                                 la->eventTag, phba->fc_eventTag,
3388                                 phba->pport->port_state, vport->fc_flag);
3389                         lpfc_mbx_issue_link_down(phba);
3390                 } else
3391                         lpfc_enable_la(phba);
3392
3393                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3394                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3395                                 "Data: x%x x%x x%x\n",
3396                                 la->eventTag, phba->fc_eventTag,
3397                                 phba->pport->port_state, vport->fc_flag);
3398                 /*
3399                  * The cmnd that triggered this will be waiting for this
3400                  * signal.
3401                  */
3402                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3403                 if (phba->wait_4_mlo_maint_flg) {
3404                         phba->wait_4_mlo_maint_flg = 0;
3405                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3406                 }
3407         }
3408
3409         if ((phba->sli_rev < LPFC_SLI_REV4) &&
3410             bf_get(lpfc_mbx_read_top_fa, la)) {
3411                 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3412                         lpfc_issue_clear_la(phba, vport);
3413                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3414                                 "1311 fa %d\n",
3415                                 bf_get(lpfc_mbx_read_top_fa, la));
3416         }
3417
3418 lpfc_mbx_cmpl_read_topology_free_mbuf:
3419         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3420         kfree(mp);
3421         mempool_free(pmb, phba->mbox_mem_pool);
3422         return;
3423 }
3424
3425 /*
3426  * This routine handles processing a REG_LOGIN mailbox
3427  * command upon completion. It is setup in the LPFC_MBOXQ
3428  * as the completion routine when the command is
3429  * handed off to the SLI layer.
3430  */
3431 void
3432 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3433 {
3434         struct lpfc_vport  *vport = pmb->vport;
3435         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3436         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3437         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3438
3439         pmb->context1 = NULL;
3440         pmb->context2 = NULL;
3441
3442         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3443                          "0002 rpi:%x DID:%x flg:%x %d map:%x %p\n",
3444                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3445                          atomic_read(&ndlp->kref.refcount),
3446                          ndlp->nlp_usg_map, ndlp);
3447         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3448                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3449
3450         if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3451             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3452                 /* We rcvd a rscn after issuing this
3453                  * mbox reg login, we may have cycled
3454                  * back through the state and be
3455                  * back at reg login state so this
3456                  * mbox needs to be ignored becase
3457                  * there is another reg login in
3458                  * process.
3459                  */
3460                 spin_lock_irq(shost->host_lock);
3461                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3462                 spin_unlock_irq(shost->host_lock);
3463         } else
3464                 /* Good status, call state machine */
3465                 lpfc_disc_state_machine(vport, ndlp, pmb,
3466                                 NLP_EVT_CMPL_REG_LOGIN);
3467
3468         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3469         kfree(mp);
3470         mempool_free(pmb, phba->mbox_mem_pool);
3471         /* decrement the node reference count held for this callback
3472          * function.
3473          */
3474         lpfc_nlp_put(ndlp);
3475
3476         return;
3477 }
3478
3479 static void
3480 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3481 {
3482         MAILBOX_t *mb = &pmb->u.mb;
3483         struct lpfc_vport *vport = pmb->vport;
3484         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3485
3486         switch (mb->mbxStatus) {
3487         case 0x0011:
3488         case 0x0020:
3489                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3490                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3491                                  mb->mbxStatus);
3492                 break;
3493         /* If VPI is busy, reset the HBA */
3494         case 0x9700:
3495                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3496                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3497                         vport->vpi, mb->mbxStatus);
3498                 if (!(phba->pport->load_flag & FC_UNLOADING))
3499                         lpfc_workq_post_event(phba, NULL, NULL,
3500                                 LPFC_EVT_RESET_HBA);
3501         }
3502         spin_lock_irq(shost->host_lock);
3503         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3504         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3505         spin_unlock_irq(shost->host_lock);
3506         vport->unreg_vpi_cmpl = VPORT_OK;
3507         mempool_free(pmb, phba->mbox_mem_pool);
3508         lpfc_cleanup_vports_rrqs(vport, NULL);
3509         /*
3510          * This shost reference might have been taken at the beginning of
3511          * lpfc_vport_delete()
3512          */
3513         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3514                 scsi_host_put(shost);
3515 }
3516
3517 int
3518 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3519 {
3520         struct lpfc_hba  *phba = vport->phba;
3521         LPFC_MBOXQ_t *mbox;
3522         int rc;
3523
3524         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3525         if (!mbox)
3526                 return 1;
3527
3528         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3529         mbox->vport = vport;
3530         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3531         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3532         if (rc == MBX_NOT_FINISHED) {
3533                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3534                                  "1800 Could not issue unreg_vpi\n");
3535                 mempool_free(mbox, phba->mbox_mem_pool);
3536                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3537                 return rc;
3538         }
3539         return 0;
3540 }
3541
3542 static void
3543 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3544 {
3545         struct lpfc_vport *vport = pmb->vport;
3546         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3547         MAILBOX_t *mb = &pmb->u.mb;
3548
3549         switch (mb->mbxStatus) {
3550         case 0x0011:
3551         case 0x9601:
3552         case 0x9602:
3553                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3554                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3555                                  mb->mbxStatus);
3556                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3557                 spin_lock_irq(shost->host_lock);
3558                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3559                 spin_unlock_irq(shost->host_lock);
3560                 vport->fc_myDID = 0;
3561                 goto out;
3562         }
3563
3564         spin_lock_irq(shost->host_lock);
3565         vport->vpi_state |= LPFC_VPI_REGISTERED;
3566         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3567         spin_unlock_irq(shost->host_lock);
3568         vport->num_disc_nodes = 0;
3569         /* go thru NPR list and issue ELS PLOGIs */
3570         if (vport->fc_npr_cnt)
3571                 lpfc_els_disc_plogi(vport);
3572
3573         if (!vport->num_disc_nodes) {
3574                 spin_lock_irq(shost->host_lock);
3575                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3576                 spin_unlock_irq(shost->host_lock);
3577                 lpfc_can_disctmo(vport);
3578         }
3579         vport->port_state = LPFC_VPORT_READY;
3580
3581 out:
3582         mempool_free(pmb, phba->mbox_mem_pool);
3583         return;
3584 }
3585
3586 /**
3587  * lpfc_create_static_vport - Read HBA config region to create static vports.
3588  * @phba: pointer to lpfc hba data structure.
3589  *
3590  * This routine issue a DUMP mailbox command for config region 22 to get
3591  * the list of static vports to be created. The function create vports
3592  * based on the information returned from the HBA.
3593  **/
3594 void
3595 lpfc_create_static_vport(struct lpfc_hba *phba)
3596 {
3597         LPFC_MBOXQ_t *pmb = NULL;
3598         MAILBOX_t *mb;
3599         struct static_vport_info *vport_info;
3600         int mbx_wait_rc = 0, i;
3601         struct fc_vport_identifiers vport_id;
3602         struct fc_vport *new_fc_vport;
3603         struct Scsi_Host *shost;
3604         struct lpfc_vport *vport;
3605         uint16_t offset = 0;
3606         uint8_t *vport_buff;
3607         struct lpfc_dmabuf *mp;
3608         uint32_t byte_count = 0;
3609
3610         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3611         if (!pmb) {
3612                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3613                                 "0542 lpfc_create_static_vport failed to"
3614                                 " allocate mailbox memory\n");
3615                 return;
3616         }
3617         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3618         mb = &pmb->u.mb;
3619
3620         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3621         if (!vport_info) {
3622                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3623                                 "0543 lpfc_create_static_vport failed to"
3624                                 " allocate vport_info\n");
3625                 mempool_free(pmb, phba->mbox_mem_pool);
3626                 return;
3627         }
3628
3629         vport_buff = (uint8_t *) vport_info;
3630         do {
3631                 /* free dma buffer from previous round */
3632                 if (pmb->context1) {
3633                         mp = (struct lpfc_dmabuf *)pmb->context1;
3634                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3635                         kfree(mp);
3636                 }
3637                 if (lpfc_dump_static_vport(phba, pmb, offset))
3638                         goto out;
3639
3640                 pmb->vport = phba->pport;
3641                 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3642                                                         LPFC_MBOX_TMO);
3643
3644                 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3645                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3646                                 "0544 lpfc_create_static_vport failed to"
3647                                 " issue dump mailbox command ret 0x%x "
3648                                 "status 0x%x\n",
3649                                 mbx_wait_rc, mb->mbxStatus);
3650                         goto out;
3651                 }
3652
3653                 if (phba->sli_rev == LPFC_SLI_REV4) {
3654                         byte_count = pmb->u.mqe.un.mb_words[5];
3655                         mp = (struct lpfc_dmabuf *)pmb->context1;
3656                         if (byte_count > sizeof(struct static_vport_info) -
3657                                         offset)
3658                                 byte_count = sizeof(struct static_vport_info)
3659                                         - offset;
3660                         memcpy(vport_buff + offset, mp->virt, byte_count);
3661                         offset += byte_count;
3662                 } else {
3663                         if (mb->un.varDmp.word_cnt >
3664                                 sizeof(struct static_vport_info) - offset)
3665                                 mb->un.varDmp.word_cnt =
3666                                         sizeof(struct static_vport_info)
3667                                                 - offset;
3668                         byte_count = mb->un.varDmp.word_cnt;
3669                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3670                                 vport_buff + offset,
3671                                 byte_count);
3672
3673                         offset += byte_count;
3674                 }
3675
3676         } while (byte_count &&
3677                 offset < sizeof(struct static_vport_info));
3678
3679
3680         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3681                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3682                         != VPORT_INFO_REV)) {
3683                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3684                         "0545 lpfc_create_static_vport bad"
3685                         " information header 0x%x 0x%x\n",
3686                         le32_to_cpu(vport_info->signature),
3687                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3688
3689                 goto out;
3690         }
3691
3692         shost = lpfc_shost_from_vport(phba->pport);
3693
3694         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3695                 memset(&vport_id, 0, sizeof(vport_id));
3696                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3697                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3698                 if (!vport_id.port_name || !vport_id.node_name)
3699                         continue;
3700
3701                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3702                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3703                 vport_id.disable = false;
3704                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3705
3706                 if (!new_fc_vport) {
3707                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3708                                 "0546 lpfc_create_static_vport failed to"
3709                                 " create vport\n");
3710                         continue;
3711                 }
3712
3713                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3714                 vport->vport_flag |= STATIC_VPORT;
3715         }
3716
3717 out:
3718         kfree(vport_info);
3719         if (mbx_wait_rc != MBX_TIMEOUT) {
3720                 if (pmb->context1) {
3721                         mp = (struct lpfc_dmabuf *)pmb->context1;
3722                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3723                         kfree(mp);
3724                 }
3725                 mempool_free(pmb, phba->mbox_mem_pool);
3726         }
3727
3728         return;
3729 }
3730
3731 /*
3732  * This routine handles processing a Fabric REG_LOGIN mailbox
3733  * command upon completion. It is setup in the LPFC_MBOXQ
3734  * as the completion routine when the command is
3735  * handed off to the SLI layer.
3736  */
3737 void
3738 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3739 {
3740         struct lpfc_vport *vport = pmb->vport;
3741         MAILBOX_t *mb = &pmb->u.mb;
3742         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3743         struct lpfc_nodelist *ndlp;
3744         struct Scsi_Host *shost;
3745
3746         ndlp = (struct lpfc_nodelist *) pmb->context2;
3747         pmb->context1 = NULL;
3748         pmb->context2 = NULL;
3749
3750         if (mb->mbxStatus) {
3751                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3752                                  "0258 Register Fabric login error: 0x%x\n",
3753                                  mb->mbxStatus);
3754                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3755                 kfree(mp);
3756                 mempool_free(pmb, phba->mbox_mem_pool);
3757
3758                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3759                         /* FLOGI failed, use loop map to make discovery list */
3760                         lpfc_disc_list_loopmap(vport);
3761
3762                         /* Start discovery */
3763                         lpfc_disc_start(vport);
3764                         /* Decrement the reference count to ndlp after the
3765                          * reference to the ndlp are done.
3766                          */
3767                         lpfc_nlp_put(ndlp);
3768                         return;
3769                 }
3770
3771                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3772                 /* Decrement the reference count to ndlp after the reference
3773                  * to the ndlp are done.
3774                  */
3775                 lpfc_nlp_put(ndlp);
3776                 return;
3777         }
3778
3779         if (phba->sli_rev < LPFC_SLI_REV4)
3780                 ndlp->nlp_rpi = mb->un.varWords[0];
3781         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3782         ndlp->nlp_type |= NLP_FABRIC;
3783         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3784
3785         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3786                 /* when physical port receive logo donot start
3787                  * vport discovery */
3788                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3789                         lpfc_start_fdiscs(phba);
3790                 else {
3791                         shost = lpfc_shost_from_vport(vport);
3792                         spin_lock_irq(shost->host_lock);
3793                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3794                         spin_unlock_irq(shost->host_lock);
3795                 }
3796                 lpfc_do_scr_ns_plogi(phba, vport);
3797         }
3798
3799         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3800         kfree(mp);
3801         mempool_free(pmb, phba->mbox_mem_pool);
3802
3803         /* Drop the reference count from the mbox at the end after
3804          * all the current reference to the ndlp have been done.
3805          */
3806         lpfc_nlp_put(ndlp);
3807         return;
3808 }
3809
3810 /*
3811  * This routine handles processing a NameServer REG_LOGIN mailbox
3812  * command upon completion. It is setup in the LPFC_MBOXQ
3813  * as the completion routine when the command is
3814  * handed off to the SLI layer.
3815  */
3816 void
3817 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3818 {
3819         MAILBOX_t *mb = &pmb->u.mb;
3820         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3821         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3822         struct lpfc_vport *vport = pmb->vport;
3823
3824         pmb->context1 = NULL;
3825         pmb->context2 = NULL;
3826
3827         if (mb->mbxStatus) {
3828 out:
3829                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3830                                  "0260 Register NameServer error: 0x%x\n",
3831                                  mb->mbxStatus);
3832                 /* decrement the node reference count held for this
3833                  * callback function.
3834                  */
3835                 lpfc_nlp_put(ndlp);
3836                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3837                 kfree(mp);
3838                 mempool_free(pmb, phba->mbox_mem_pool);
3839
3840                 /* If no other thread is using the ndlp, free it */
3841                 lpfc_nlp_not_used(ndlp);
3842
3843                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3844                         /*
3845                          * RegLogin failed, use loop map to make discovery
3846                          * list
3847                          */
3848                         lpfc_disc_list_loopmap(vport);
3849
3850                         /* Start discovery */
3851                         lpfc_disc_start(vport);
3852                         return;
3853                 }
3854                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3855                 return;
3856         }
3857
3858         if (phba->sli_rev < LPFC_SLI_REV4)
3859                 ndlp->nlp_rpi = mb->un.varWords[0];
3860         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3861         ndlp->nlp_type |= NLP_FABRIC;
3862         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3863         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3864                          "0003 rpi:%x DID:%x flg:%x %d map%x %p\n",
3865                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3866                          atomic_read(&ndlp->kref.refcount),
3867                          ndlp->nlp_usg_map, ndlp);
3868
3869         if (vport->port_state < LPFC_VPORT_READY) {
3870                 /* Link up discovery requires Fabric registration. */
3871                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3872                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3873                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3874                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3875                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3876
3877                 /* Issue SCR just before NameServer GID_FT Query */
3878                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3879         }
3880
3881         vport->fc_ns_retry = 0;
3882         /* Good status, issue CT Request to NameServer */
3883         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3884                 /* Cannot issue NameServer Query, so finish up discovery */
3885                 goto out;
3886         }
3887
3888         /* decrement the node reference count held for this
3889          * callback function.
3890          */
3891         lpfc_nlp_put(ndlp);
3892         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3893         kfree(mp);
3894         mempool_free(pmb, phba->mbox_mem_pool);
3895
3896         return;
3897 }
3898
3899 static void
3900 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3901 {
3902         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3903         struct fc_rport  *rport;
3904         struct lpfc_rport_data *rdata;
3905         struct fc_rport_identifiers rport_ids;
3906         struct lpfc_hba  *phba = vport->phba;
3907
3908         /* Remote port has reappeared. Re-register w/ FC transport */
3909         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3910         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3911         rport_ids.port_id = ndlp->nlp_DID;
3912         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3913
3914         /*
3915          * We leave our node pointer in rport->dd_data when we unregister a
3916          * FCP target port.  But fc_remote_port_add zeros the space to which
3917          * rport->dd_data points.  So, if we're reusing a previously
3918          * registered port, drop the reference that we took the last time we
3919          * registered the port.
3920          */
3921         if (ndlp->rport && ndlp->rport->dd_data &&
3922             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3923                 lpfc_nlp_put(ndlp);
3924
3925         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3926                 "rport add:       did:x%x flg:x%x type x%x",
3927                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3928
3929         /* Don't add the remote port if unloading. */
3930         if (vport->load_flag & FC_UNLOADING)
3931                 return;
3932
3933         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3934         if (!rport || !get_device(&rport->dev)) {
3935                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3936                            "Warning: fc_remote_port_add failed\n");
3937                 return;
3938         }
3939
3940         /* initialize static port data */
3941         rport->maxframe_size = ndlp->nlp_maxframe;
3942         rport->supported_classes = ndlp->nlp_class_sup;
3943         rdata = rport->dd_data;
3944         rdata->pnode = lpfc_nlp_get(ndlp);
3945
3946         if (ndlp->nlp_type & NLP_FCP_TARGET)
3947                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3948         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3949                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3950
3951         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3952                 fc_remote_port_rolechg(rport, rport_ids.roles);
3953
3954         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3955                          "3183 rport register x%06x, rport %p role x%x\n",
3956                          ndlp->nlp_DID, rport, rport_ids.roles);
3957
3958         if ((rport->scsi_target_id != -1) &&
3959             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3960                 ndlp->nlp_sid = rport->scsi_target_id;
3961         }
3962         return;
3963 }
3964
3965 static void
3966 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3967 {
3968         struct fc_rport *rport = ndlp->rport;
3969
3970         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3971                 "rport delete:    did:x%x flg:x%x type x%x",
3972                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3973
3974         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3975                          "3184 rport unregister x%06x, rport %p\n",
3976                          ndlp->nlp_DID, rport);
3977
3978         fc_remote_port_delete(rport);
3979
3980         return;
3981 }
3982
3983 static void
3984 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3985 {
3986         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3987
3988         spin_lock_irq(shost->host_lock);
3989         switch (state) {
3990         case NLP_STE_UNUSED_NODE:
3991                 vport->fc_unused_cnt += count;
3992                 break;
3993         case NLP_STE_PLOGI_ISSUE:
3994                 vport->fc_plogi_cnt += count;
3995                 break;
3996         case NLP_STE_ADISC_ISSUE:
3997                 vport->fc_adisc_cnt += count;
3998                 break;
3999         case NLP_STE_REG_LOGIN_ISSUE:
4000                 vport->fc_reglogin_cnt += count;
4001                 break;
4002         case NLP_STE_PRLI_ISSUE:
4003                 vport->fc_prli_cnt += count;
4004                 break;
4005         case NLP_STE_UNMAPPED_NODE:
4006                 vport->fc_unmap_cnt += count;
4007                 break;
4008         case NLP_STE_MAPPED_NODE:
4009                 vport->fc_map_cnt += count;
4010                 break;
4011         case NLP_STE_NPR_NODE:
4012                 if (vport->fc_npr_cnt == 0 && count == -1)
4013                         vport->fc_npr_cnt = 0;
4014                 else
4015                         vport->fc_npr_cnt += count;
4016                 break;
4017         }
4018         spin_unlock_irq(shost->host_lock);
4019 }
4020
4021 static void
4022 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4023                        int old_state, int new_state)
4024 {
4025         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4026
4027         if (new_state == NLP_STE_UNMAPPED_NODE) {
4028                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4029                 ndlp->nlp_type |= NLP_FC_NODE;
4030         }
4031         if (new_state == NLP_STE_MAPPED_NODE)
4032                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4033         if (new_state == NLP_STE_NPR_NODE)
4034                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4035
4036         /* Transport interface */
4037         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
4038                             old_state == NLP_STE_UNMAPPED_NODE)) {
4039                 vport->phba->nport_event_cnt++;
4040                 lpfc_unregister_remote_port(ndlp);
4041         }
4042
4043         if (new_state ==  NLP_STE_MAPPED_NODE ||
4044             new_state == NLP_STE_UNMAPPED_NODE) {
4045                 vport->phba->nport_event_cnt++;
4046                 /*
4047                  * Tell the fc transport about the port, if we haven't
4048                  * already. If we have, and it's a scsi entity, be
4049                  * sure to unblock any attached scsi devices
4050                  */
4051                 lpfc_register_remote_port(vport, ndlp);
4052         }
4053         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4054                 (vport->stat_data_enabled)) {
4055                 /*
4056                  * A new target is discovered, if there is no buffer for
4057                  * statistical data collection allocate buffer.
4058                  */
4059                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4060                                          sizeof(struct lpfc_scsicmd_bkt),
4061                                          GFP_KERNEL);
4062
4063                 if (!ndlp->lat_data)
4064                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
4065                                 "0286 lpfc_nlp_state_cleanup failed to "
4066                                 "allocate statistical data buffer DID "
4067                                 "0x%x\n", ndlp->nlp_DID);
4068         }
4069         /*
4070          * if we added to Mapped list, but the remote port
4071          * registration failed or assigned a target id outside
4072          * our presentable range - move the node to the
4073          * Unmapped List
4074          */
4075         if (new_state == NLP_STE_MAPPED_NODE &&
4076             (!ndlp->rport ||
4077              ndlp->rport->scsi_target_id == -1 ||
4078              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4079                 spin_lock_irq(shost->host_lock);
4080                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4081                 spin_unlock_irq(shost->host_lock);
4082                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4083         }
4084 }
4085
4086 static char *
4087 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4088 {
4089         static char *states[] = {
4090                 [NLP_STE_UNUSED_NODE] = "UNUSED",
4091                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4092                 [NLP_STE_ADISC_ISSUE] = "ADISC",
4093                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4094                 [NLP_STE_PRLI_ISSUE] = "PRLI",
4095                 [NLP_STE_LOGO_ISSUE] = "LOGO",
4096                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4097                 [NLP_STE_MAPPED_NODE] = "MAPPED",
4098                 [NLP_STE_NPR_NODE] = "NPR",
4099         };
4100
4101         if (state < NLP_STE_MAX_STATE && states[state])
4102                 strlcpy(buffer, states[state], size);
4103         else
4104                 snprintf(buffer, size, "unknown (%d)", state);
4105         return buffer;
4106 }
4107
4108 void
4109 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4110                    int state)
4111 {
4112         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4113         int  old_state = ndlp->nlp_state;
4114         char name1[16], name2[16];
4115
4116         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4117                          "0904 NPort state transition x%06x, %s -> %s\n",
4118                          ndlp->nlp_DID,
4119                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4120                          lpfc_nlp_state_name(name2, sizeof(name2), state));
4121
4122         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4123                 "node statechg    did:x%x old:%d ste:%d",
4124                 ndlp->nlp_DID, old_state, state);
4125
4126         if (old_state == NLP_STE_NPR_NODE &&
4127             state != NLP_STE_NPR_NODE)
4128                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4129         if (old_state == NLP_STE_UNMAPPED_NODE) {
4130                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4131                 ndlp->nlp_type &= ~NLP_FC_NODE;
4132         }
4133
4134         if (list_empty(&ndlp->nlp_listp)) {
4135                 spin_lock_irq(shost->host_lock);
4136                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4137                 spin_unlock_irq(shost->host_lock);
4138         } else if (old_state)
4139                 lpfc_nlp_counters(vport, old_state, -1);
4140
4141         ndlp->nlp_state = state;
4142         lpfc_nlp_counters(vport, state, 1);
4143         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4144 }
4145
4146 void
4147 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4148 {
4149         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4150
4151         if (list_empty(&ndlp->nlp_listp)) {
4152                 spin_lock_irq(shost->host_lock);
4153                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4154                 spin_unlock_irq(shost->host_lock);
4155         }
4156 }
4157
4158 void
4159 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4160 {
4161         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4162
4163         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4164         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4165                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4166         spin_lock_irq(shost->host_lock);
4167         list_del_init(&ndlp->nlp_listp);
4168         spin_unlock_irq(shost->host_lock);
4169         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4170                                 NLP_STE_UNUSED_NODE);
4171 }
4172
4173 static void
4174 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4175 {
4176         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4177         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4178                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4179         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4180                                 NLP_STE_UNUSED_NODE);
4181 }
4182 /**
4183  * lpfc_initialize_node - Initialize all fields of node object
4184  * @vport: Pointer to Virtual Port object.
4185  * @ndlp: Pointer to FC node object.
4186  * @did: FC_ID of the node.
4187  *
4188  * This function is always called when node object need to be initialized.
4189  * It initializes all the fields of the node object. Although the reference
4190  * to phba from @ndlp can be obtained indirectly through it's reference to
4191  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4192  * to the life-span of the @ndlp might go beyond the existence of @vport as
4193  * the final release of ndlp is determined by its reference count. And, the
4194  * operation on @ndlp needs the reference to phba.
4195  **/
4196 static inline void
4197 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4198         uint32_t did)
4199 {
4200         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4201         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4202         init_timer(&ndlp->nlp_delayfunc);
4203         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
4204         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
4205         ndlp->nlp_DID = did;
4206         ndlp->vport = vport;
4207         ndlp->phba = vport->phba;
4208         ndlp->nlp_sid = NLP_NO_SID;
4209         kref_init(&ndlp->kref);
4210         NLP_INT_NODE_ACT(ndlp);
4211         atomic_set(&ndlp->cmd_pending, 0);
4212         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4213 }
4214
4215 struct lpfc_nodelist *
4216 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4217                  int state)
4218 {
4219         struct lpfc_hba *phba = vport->phba;
4220         uint32_t did;
4221         unsigned long flags;
4222         unsigned long *active_rrqs_xri_bitmap = NULL;
4223
4224         if (!ndlp)
4225                 return NULL;
4226
4227         spin_lock_irqsave(&phba->ndlp_lock, flags);
4228         /* The ndlp should not be in memory free mode */
4229         if (NLP_CHK_FREE_REQ(ndlp)) {
4230                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4231                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4232                                 "0277 lpfc_enable_node: ndlp:x%p "
4233                                 "usgmap:x%x refcnt:%d\n",
4234                                 (void *)ndlp, ndlp->nlp_usg_map,
4235                                 atomic_read(&ndlp->kref.refcount));
4236                 return NULL;
4237         }
4238         /* The ndlp should not already be in active mode */
4239         if (NLP_CHK_NODE_ACT(ndlp)) {
4240                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4241                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4242                                 "0278 lpfc_enable_node: ndlp:x%p "
4243                                 "usgmap:x%x refcnt:%d\n",
4244                                 (void *)ndlp, ndlp->nlp_usg_map,
4245                                 atomic_read(&ndlp->kref.refcount));
4246                 return NULL;
4247         }
4248
4249         /* Keep the original DID */
4250         did = ndlp->nlp_DID;
4251         if (phba->sli_rev == LPFC_SLI_REV4)
4252                 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4253
4254         /* re-initialize ndlp except of ndlp linked list pointer */
4255         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4256                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4257         lpfc_initialize_node(vport, ndlp, did);
4258
4259         if (phba->sli_rev == LPFC_SLI_REV4)
4260                 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4261
4262         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4263         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4264                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
4265                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4266                                  "0008 rpi:%x DID:%x flg:%x refcnt:%d "
4267                                  "map:%x %p\n", ndlp->nlp_rpi, ndlp->nlp_DID,
4268                                  ndlp->nlp_flag,
4269                                  atomic_read(&ndlp->kref.refcount),
4270                                  ndlp->nlp_usg_map, ndlp);
4271         }
4272
4273
4274         if (state != NLP_STE_UNUSED_NODE)
4275                 lpfc_nlp_set_state(vport, ndlp, state);
4276
4277         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4278                 "node enable:       did:x%x",
4279                 ndlp->nlp_DID, 0, 0);
4280         return ndlp;
4281 }
4282
4283 void
4284 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4285 {
4286         /*
4287          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4288          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4289          * the ndlp from the vport. The ndlp marked as UNUSED on the list
4290          * until ALL other outstanding threads have completed. We check
4291          * that the ndlp not already in the UNUSED state before we proceed.
4292          */
4293         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4294                 return;
4295         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4296         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4297                 lpfc_cleanup_vports_rrqs(vport, ndlp);
4298                 lpfc_unreg_rpi(vport, ndlp);
4299         } else {
4300                 lpfc_nlp_put(ndlp);
4301         }
4302         return;
4303 }
4304
4305 /*
4306  * Start / ReStart rescue timer for Discovery / RSCN handling
4307  */
4308 void
4309 lpfc_set_disctmo(struct lpfc_vport *vport)
4310 {
4311         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4312         struct lpfc_hba  *phba = vport->phba;
4313         uint32_t tmo;
4314
4315         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4316                 /* For FAN, timeout should be greater than edtov */
4317                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4318         } else {
4319                 /* Normal discovery timeout should be > than ELS/CT timeout
4320                  * FC spec states we need 3 * ratov for CT requests
4321                  */
4322                 tmo = ((phba->fc_ratov * 3) + 3);
4323         }
4324
4325
4326         if (!timer_pending(&vport->fc_disctmo)) {
4327                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4328                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
4329                         tmo, vport->port_state, vport->fc_flag);
4330         }
4331
4332         mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4333         spin_lock_irq(shost->host_lock);
4334         vport->fc_flag |= FC_DISC_TMO;
4335         spin_unlock_irq(shost->host_lock);
4336
4337         /* Start Discovery Timer state <hba_state> */
4338         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4339                          "0247 Start Discovery Timer state x%x "
4340                          "Data: x%x x%lx x%x x%x\n",
4341                          vport->port_state, tmo,
4342                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4343                          vport->fc_adisc_cnt);
4344
4345         return;
4346 }
4347
4348 /*
4349  * Cancel rescue timer for Discovery / RSCN handling
4350  */
4351 int
4352 lpfc_can_disctmo(struct lpfc_vport *vport)
4353 {
4354         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4355         unsigned long iflags;
4356
4357         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4358                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
4359                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4360
4361         /* Turn off discovery timer if its running */
4362         if (vport->fc_flag & FC_DISC_TMO) {
4363                 spin_lock_irqsave(shost->host_lock, iflags);
4364                 vport->fc_flag &= ~FC_DISC_TMO;
4365                 spin_unlock_irqrestore(shost->host_lock, iflags);
4366                 del_timer_sync(&vport->fc_disctmo);
4367                 spin_lock_irqsave(&vport->work_port_lock, iflags);
4368                 vport->work_port_events &= ~WORKER_DISC_TMO;
4369                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4370         }
4371
4372         /* Cancel Discovery Timer state <hba_state> */
4373         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4374                          "0248 Cancel Discovery Timer state x%x "
4375                          "Data: x%x x%x x%x\n",
4376                          vport->port_state, vport->fc_flag,
4377                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4378         return 0;
4379 }
4380
4381 /*
4382  * Check specified ring for outstanding IOCB on the SLI queue
4383  * Return true if iocb matches the specified nport
4384  */
4385 int
4386 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4387                     struct lpfc_sli_ring *pring,
4388                     struct lpfc_iocbq *iocb,
4389                     struct lpfc_nodelist *ndlp)
4390 {
4391         struct lpfc_sli *psli = &phba->sli;
4392         IOCB_t *icmd = &iocb->iocb;
4393         struct lpfc_vport    *vport = ndlp->vport;
4394
4395         if (iocb->vport != vport)
4396                 return 0;
4397
4398         if (pring->ringno == LPFC_ELS_RING) {
4399                 switch (icmd->ulpCommand) {
4400                 case CMD_GEN_REQUEST64_CR:
4401                         if (iocb->context_un.ndlp == ndlp)
4402                                 return 1;
4403                 case CMD_ELS_REQUEST64_CR:
4404                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4405                                 return 1;
4406                 case CMD_XMIT_ELS_RSP64_CX:
4407                         if (iocb->context1 == (uint8_t *) ndlp)
4408                                 return 1;
4409                 }
4410         } else if (pring->ringno == psli->extra_ring) {
4411
4412         } else if (pring->ringno == psli->fcp_ring) {
4413                 /* Skip match check if waiting to relogin to FCP target */
4414                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4415                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4416                         return 0;
4417                 }
4418                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4419                         return 1;
4420                 }
4421         } else if (pring->ringno == psli->next_ring) {
4422
4423         }
4424         return 0;
4425 }
4426
4427 /*
4428  * Free resources / clean up outstanding I/Os
4429  * associated with nlp_rpi in the LPFC_NODELIST entry.
4430  */
4431 static int
4432 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4433 {
4434         LIST_HEAD(completions);
4435         struct lpfc_sli *psli;
4436         struct lpfc_sli_ring *pring;
4437         struct lpfc_iocbq *iocb, *next_iocb;
4438         uint32_t i;
4439
4440         lpfc_fabric_abort_nport(ndlp);
4441
4442         /*
4443          * Everything that matches on txcmplq will be returned
4444          * by firmware with a no rpi error.
4445          */
4446         psli = &phba->sli;
4447         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4448                 /* Now process each ring */
4449                 for (i = 0; i < psli->num_rings; i++) {
4450                         pring = &psli->ring[i];
4451
4452                         spin_lock_irq(&phba->hbalock);
4453                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4454                                                  list) {
4455                                 /*
4456                                  * Check to see if iocb matches the nport we are
4457                                  * looking for
4458                                  */
4459                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4460                                                          ndlp))) {
4461                                         /* It matches, so deque and call compl
4462                                            with an error */
4463                                         list_move_tail(&iocb->list,
4464                                                        &completions);
4465                                 }
4466                         }
4467                         spin_unlock_irq(&phba->hbalock);
4468                 }
4469         }
4470
4471         /* Cancel all the IOCBs from the completions list */
4472         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4473                               IOERR_SLI_ABORTED);
4474
4475         return 0;
4476 }
4477
4478 /**
4479  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4480  * @phba: Pointer to HBA context object.
4481  * @pmb: Pointer to mailbox object.
4482  *
4483  * This function will issue an ELS LOGO command after completing
4484  * the UNREG_RPI.
4485  **/
4486 static void
4487 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4488 {
4489         struct lpfc_vport  *vport = pmb->vport;
4490         struct lpfc_nodelist *ndlp;
4491
4492         ndlp = (struct lpfc_nodelist *)(pmb->context1);
4493         if (!ndlp)
4494                 return;
4495         lpfc_issue_els_logo(vport, ndlp, 0);
4496         mempool_free(pmb, phba->mbox_mem_pool);
4497 }
4498
4499 /*
4500  * Free rpi associated with LPFC_NODELIST entry.
4501  * This routine is called from lpfc_freenode(), when we are removing
4502  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4503  * LOGO that completes successfully, and we are waiting to PLOGI back
4504  * to the remote NPort. In addition, it is called after we receive
4505  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4506  * we are waiting to PLOGI back to the remote NPort.
4507  */
4508 int
4509 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4510 {
4511         struct lpfc_hba *phba = vport->phba;
4512         LPFC_MBOXQ_t    *mbox;
4513         int rc;
4514         uint16_t rpi;
4515
4516         if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4517             ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4518                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4519                         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4520                                          "3366 RPI x%x needs to be "
4521                                          "unregistered nlp_flag x%x "
4522                                          "did x%x\n",
4523                                          ndlp->nlp_rpi, ndlp->nlp_flag,
4524                                          ndlp->nlp_DID);
4525                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4526                 if (mbox) {
4527                         /* SLI4 ports require the physical rpi value. */
4528                         rpi = ndlp->nlp_rpi;
4529                         if (phba->sli_rev == LPFC_SLI_REV4)
4530                                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4531
4532                         lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4533                         mbox->vport = vport;
4534                         if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4535                                 mbox->context1 = ndlp;
4536                                 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4537                         } else {
4538                                 if (phba->sli_rev == LPFC_SLI_REV4 &&
4539                                     (!(vport->load_flag & FC_UNLOADING)) &&
4540                                     (bf_get(lpfc_sli_intf_if_type,
4541                                      &phba->sli4_hba.sli_intf) ==
4542                                       LPFC_SLI_INTF_IF_TYPE_2)) {
4543                                         mbox->context1 = lpfc_nlp_get(ndlp);
4544                                         mbox->mbox_cmpl =
4545                                                 lpfc_sli4_unreg_rpi_cmpl_clr;
4546                                 } else
4547                                         mbox->mbox_cmpl =
4548                                                 lpfc_sli_def_mbox_cmpl;
4549                         }
4550
4551                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4552                         if (rc == MBX_NOT_FINISHED)
4553                                 mempool_free(mbox, phba->mbox_mem_pool);
4554                 }
4555                 lpfc_no_rpi(phba, ndlp);
4556
4557                 if (phba->sli_rev != LPFC_SLI_REV4)
4558                         ndlp->nlp_rpi = 0;
4559                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4560                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4561                 return 1;
4562         }
4563         return 0;
4564 }
4565
4566 /**
4567  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4568  * @phba: pointer to lpfc hba data structure.
4569  *
4570  * This routine is invoked to unregister all the currently registered RPIs
4571  * to the HBA.
4572  **/
4573 void
4574 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4575 {
4576         struct lpfc_vport **vports;
4577         struct lpfc_nodelist *ndlp;
4578         struct Scsi_Host *shost;
4579         int i;
4580
4581         vports = lpfc_create_vport_work_array(phba);
4582         if (!vports) {
4583                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4584                         "2884 Vport array allocation failed \n");
4585                 return;
4586         }
4587         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4588                 shost = lpfc_shost_from_vport(vports[i]);
4589                 spin_lock_irq(shost->host_lock);
4590                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4591                         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4592                                 /* The mempool_alloc might sleep */
4593                                 spin_unlock_irq(shost->host_lock);
4594                                 lpfc_unreg_rpi(vports[i], ndlp);
4595                                 spin_lock_irq(shost->host_lock);
4596                         }
4597                 }
4598                 spin_unlock_irq(shost->host_lock);
4599         }
4600         lpfc_destroy_vport_work_array(phba, vports);
4601 }
4602
4603 void
4604 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4605 {
4606         struct lpfc_hba  *phba  = vport->phba;
4607         LPFC_MBOXQ_t     *mbox;
4608         int rc;
4609
4610         if (phba->sli_rev == LPFC_SLI_REV4) {
4611                 lpfc_sli4_unreg_all_rpis(vport);
4612                 return;
4613         }
4614
4615         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4616         if (mbox) {
4617                 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
4618                                  mbox);
4619                 mbox->vport = vport;
4620                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4621                 mbox->context1 = NULL;
4622                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4623                 if (rc != MBX_TIMEOUT)
4624                         mempool_free(mbox, phba->mbox_mem_pool);
4625
4626                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4627                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4628                                 "1836 Could not issue "
4629                                 "unreg_login(all_rpis) status %d\n", rc);
4630         }
4631 }
4632
4633 void
4634 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4635 {
4636         struct lpfc_hba  *phba  = vport->phba;
4637         LPFC_MBOXQ_t     *mbox;
4638         int rc;
4639
4640         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4641         if (mbox) {
4642                 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
4643                                mbox);
4644                 mbox->vport = vport;
4645                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4646                 mbox->context1 = NULL;
4647                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4648                 if (rc != MBX_TIMEOUT)
4649                         mempool_free(mbox, phba->mbox_mem_pool);
4650
4651                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4652                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4653                                          "1815 Could not issue "
4654                                          "unreg_did (default rpis) status %d\n",
4655                                          rc);
4656         }
4657 }
4658
4659 /*
4660  * Free resources associated with LPFC_NODELIST entry
4661  * so it can be freed.
4662  */
4663 static int
4664 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4665 {
4666         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4667         struct lpfc_hba  *phba = vport->phba;
4668         LPFC_MBOXQ_t *mb, *nextmb;
4669         struct lpfc_dmabuf *mp;
4670
4671         /* Cleanup node for NPort <nlp_DID> */
4672         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4673                          "0900 Cleanup node for NPort x%x "
4674                          "Data: x%x x%x x%x\n",
4675                          ndlp->nlp_DID, ndlp->nlp_flag,
4676                          ndlp->nlp_state, ndlp->nlp_rpi);
4677         if (NLP_CHK_FREE_REQ(ndlp)) {
4678                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4679                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4680                                 "usgmap:x%x refcnt:%d\n",
4681                                 (void *)ndlp, ndlp->nlp_usg_map,
4682                                 atomic_read(&ndlp->kref.refcount));
4683                 lpfc_dequeue_node(vport, ndlp);
4684         } else {
4685                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4686                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4687                                 "usgmap:x%x refcnt:%d\n",
4688                                 (void *)ndlp, ndlp->nlp_usg_map,
4689                                 atomic_read(&ndlp->kref.refcount));
4690                 lpfc_disable_node(vport, ndlp);
4691         }
4692
4693
4694         /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
4695
4696         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4697         if ((mb = phba->sli.mbox_active)) {
4698                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4699                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4700                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4701                         mb->context2 = NULL;
4702                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4703                 }
4704         }
4705
4706         spin_lock_irq(&phba->hbalock);
4707         /* Cleanup REG_LOGIN completions which are not yet processed */
4708         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4709                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4710                         (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
4711                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4712                         continue;
4713
4714                 mb->context2 = NULL;
4715                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4716         }
4717
4718         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4719                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4720                    !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4721                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4722                         mp = (struct lpfc_dmabuf *) (mb->context1);
4723                         if (mp) {
4724                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4725                                 kfree(mp);
4726                         }
4727                         list_del(&mb->list);
4728                         mempool_free(mb, phba->mbox_mem_pool);
4729                         /* We shall not invoke the lpfc_nlp_put to decrement
4730                          * the ndlp reference count as we are in the process
4731                          * of lpfc_nlp_release.
4732                          */
4733                 }
4734         }
4735         spin_unlock_irq(&phba->hbalock);
4736
4737         lpfc_els_abort(phba, ndlp);
4738
4739         spin_lock_irq(shost->host_lock);
4740         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4741         spin_unlock_irq(shost->host_lock);
4742
4743         ndlp->nlp_last_elscmd = 0;
4744         del_timer_sync(&ndlp->nlp_delayfunc);
4745
4746         list_del_init(&ndlp->els_retry_evt.evt_listp);
4747         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4748         lpfc_cleanup_vports_rrqs(vport, ndlp);
4749         lpfc_unreg_rpi(vport, ndlp);
4750
4751         return 0;
4752 }
4753
4754 /*
4755  * Check to see if we can free the nlp back to the freelist.
4756  * If we are in the middle of using the nlp in the discovery state
4757  * machine, defer the free till we reach the end of the state machine.
4758  */
4759 static void
4760 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4761 {
4762         struct lpfc_hba  *phba = vport->phba;
4763         struct lpfc_rport_data *rdata;
4764         LPFC_MBOXQ_t *mbox;
4765         int rc;
4766
4767         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4768         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4769             !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4770             !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
4771                 /* For this case we need to cleanup the default rpi
4772                  * allocated by the firmware.
4773                  */
4774                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4775                                  "0005 rpi:%x DID:%x flg:%x %d map:%x %p\n",
4776                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4777                                  atomic_read(&ndlp->kref.refcount),
4778                                  ndlp->nlp_usg_map, ndlp);
4779                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4780                         != NULL) {
4781                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4782                             (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
4783                         if (rc) {
4784                                 mempool_free(mbox, phba->mbox_mem_pool);
4785                         }
4786                         else {
4787                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4788                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4789                                 mbox->vport = vport;
4790                                 mbox->context2 = ndlp;
4791                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4792                                 if (rc == MBX_NOT_FINISHED) {
4793                                         mempool_free(mbox, phba->mbox_mem_pool);
4794                                 }
4795                         }
4796                 }
4797         }
4798         lpfc_cleanup_node(vport, ndlp);
4799
4800         /*
4801          * We can get here with a non-NULL ndlp->rport because when we
4802          * unregister a rport we don't break the rport/node linkage.  So if we
4803          * do, make sure we don't leaving any dangling pointers behind.
4804          */
4805         if (ndlp->rport) {
4806                 rdata = ndlp->rport->dd_data;
4807                 rdata->pnode = NULL;
4808                 ndlp->rport = NULL;
4809         }
4810 }
4811
4812 static int
4813 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4814               uint32_t did)
4815 {
4816         D_ID mydid, ndlpdid, matchdid;
4817
4818         if (did == Bcast_DID)
4819                 return 0;
4820
4821         /* First check for Direct match */
4822         if (ndlp->nlp_DID == did)
4823                 return 1;
4824
4825         /* Next check for area/domain identically equals 0 match */
4826         mydid.un.word = vport->fc_myDID;
4827         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4828                 return 0;
4829         }
4830
4831         matchdid.un.word = did;
4832         ndlpdid.un.word = ndlp->nlp_DID;
4833         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4834                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4835                     (mydid.un.b.area == matchdid.un.b.area)) {
4836                         if ((ndlpdid.un.b.domain == 0) &&
4837                             (ndlpdid.un.b.area == 0)) {
4838                                 if (ndlpdid.un.b.id)
4839                                         return 1;
4840                         }
4841                         return 0;
4842                 }
4843
4844                 matchdid.un.word = ndlp->nlp_DID;
4845                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4846                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4847                         if ((matchdid.un.b.domain == 0) &&
4848                             (matchdid.un.b.area == 0)) {
4849                                 if (matchdid.un.b.id)
4850                                         return 1;
4851                         }
4852                 }
4853         }
4854         return 0;
4855 }
4856
4857 /* Search for a nodelist entry */
4858 static struct lpfc_nodelist *
4859 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4860 {
4861         struct lpfc_nodelist *ndlp;
4862         uint32_t data1;
4863
4864         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4865                 if (lpfc_matchdid(vport, ndlp, did)) {
4866                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4867                                  ((uint32_t) ndlp->nlp_xri << 16) |
4868                                  ((uint32_t) ndlp->nlp_type << 8) |
4869                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4870                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4871                                          "0929 FIND node DID "
4872                                          "Data: x%p x%x x%x x%x %p\n",
4873                                          ndlp, ndlp->nlp_DID,
4874                                          ndlp->nlp_flag, data1,
4875                                          ndlp->active_rrqs_xri_bitmap);
4876                         return ndlp;
4877                 }
4878         }
4879
4880         /* FIND node did <did> NOT FOUND */
4881         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4882                          "0932 FIND node did x%x NOT FOUND.\n", did);
4883         return NULL;
4884 }
4885
4886 struct lpfc_nodelist *
4887 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4888 {
4889         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4890         struct lpfc_nodelist *ndlp;
4891         unsigned long iflags;
4892
4893         spin_lock_irqsave(shost->host_lock, iflags);
4894         ndlp = __lpfc_findnode_did(vport, did);
4895         spin_unlock_irqrestore(shost->host_lock, iflags);
4896         return ndlp;
4897 }
4898
4899 struct lpfc_nodelist *
4900 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4901 {
4902         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4903         struct lpfc_nodelist *ndlp;
4904
4905         ndlp = lpfc_findnode_did(vport, did);
4906         if (!ndlp) {
4907                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4908                     lpfc_rscn_payload_check(vport, did) == 0)
4909                         return NULL;
4910                 ndlp = (struct lpfc_nodelist *)
4911                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4912                 if (!ndlp)
4913                         return NULL;
4914                 lpfc_nlp_init(vport, ndlp, did);
4915                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4916                 spin_lock_irq(shost->host_lock);
4917                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4918                 spin_unlock_irq(shost->host_lock);
4919                 return ndlp;
4920         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4921                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4922                 if (!ndlp)
4923                         return NULL;
4924                 spin_lock_irq(shost->host_lock);
4925                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4926                 spin_unlock_irq(shost->host_lock);
4927                 return ndlp;
4928         }
4929
4930         if ((vport->fc_flag & FC_RSCN_MODE) &&
4931             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4932                 if (lpfc_rscn_payload_check(vport, did)) {
4933                         /* If we've already received a PLOGI from this NPort
4934                          * we don't need to try to discover it again.
4935                          */
4936                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4937                                 return NULL;
4938
4939                         /* Since this node is marked for discovery,
4940                          * delay timeout is not needed.
4941                          */
4942                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4943                         spin_lock_irq(shost->host_lock);
4944                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4945                         spin_unlock_irq(shost->host_lock);
4946                 } else
4947                         ndlp = NULL;
4948         } else {
4949                 /* If we've already received a PLOGI from this NPort,
4950                  * or we are already in the process of discovery on it,
4951                  * we don't need to try to discover it again.
4952                  */
4953                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4954                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4955                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4956                         return NULL;
4957                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4958                 spin_lock_irq(shost->host_lock);
4959                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4960                 spin_unlock_irq(shost->host_lock);
4961         }
4962         return ndlp;
4963 }
4964
4965 /* Build a list of nodes to discover based on the loopmap */
4966 void
4967 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4968 {
4969         struct lpfc_hba  *phba = vport->phba;
4970         int j;
4971         uint32_t alpa, index;
4972
4973         if (!lpfc_is_link_up(phba))
4974                 return;
4975
4976         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
4977                 return;
4978
4979         /* Check for loop map present or not */
4980         if (phba->alpa_map[0]) {
4981                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4982                         alpa = phba->alpa_map[j];
4983                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4984                                 continue;
4985                         lpfc_setup_disc_node(vport, alpa);
4986                 }
4987         } else {
4988                 /* No alpamap, so try all alpa's */
4989                 for (j = 0; j < FC_MAXLOOP; j++) {
4990                         /* If cfg_scan_down is set, start from highest
4991                          * ALPA (0xef) to lowest (0x1).
4992                          */
4993                         if (vport->cfg_scan_down)
4994                                 index = j;
4995                         else
4996                                 index = FC_MAXLOOP - j - 1;
4997                         alpa = lpfcAlpaArray[index];
4998                         if ((vport->fc_myDID & 0xff) == alpa)
4999                                 continue;
5000                         lpfc_setup_disc_node(vport, alpa);
5001                 }
5002         }
5003         return;
5004 }
5005
5006 void
5007 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5008 {
5009         LPFC_MBOXQ_t *mbox;
5010         struct lpfc_sli *psli = &phba->sli;
5011         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
5012         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
5013         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
5014         int  rc;
5015
5016         /*
5017          * if it's not a physical port or if we already send
5018          * clear_la then don't send it.
5019          */
5020         if ((phba->link_state >= LPFC_CLEAR_LA) ||
5021             (vport->port_type != LPFC_PHYSICAL_PORT) ||
5022                 (phba->sli_rev == LPFC_SLI_REV4))
5023                 return;
5024
5025                         /* Link up discovery */
5026         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5027                 phba->link_state = LPFC_CLEAR_LA;
5028                 lpfc_clear_la(phba, mbox);
5029                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5030                 mbox->vport = vport;
5031                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5032                 if (rc == MBX_NOT_FINISHED) {
5033                         mempool_free(mbox, phba->mbox_mem_pool);
5034                         lpfc_disc_flush_list(vport);
5035                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5036                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5037                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5038                         phba->link_state = LPFC_HBA_ERROR;
5039                 }
5040         }
5041 }
5042
5043 /* Reg_vpi to tell firmware to resume normal operations */
5044 void
5045 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5046 {
5047         LPFC_MBOXQ_t *regvpimbox;
5048
5049         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5050         if (regvpimbox) {
5051                 lpfc_reg_vpi(vport, regvpimbox);
5052                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5053                 regvpimbox->vport = vport;
5054                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5055                                         == MBX_NOT_FINISHED) {
5056                         mempool_free(regvpimbox, phba->mbox_mem_pool);
5057                 }
5058         }
5059 }
5060
5061 /* Start Link up / RSCN discovery on NPR nodes */
5062 void
5063 lpfc_disc_start(struct lpfc_vport *vport)
5064 {
5065         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5066         struct lpfc_hba  *phba = vport->phba;
5067         uint32_t num_sent;
5068         uint32_t clear_la_pending;
5069
5070         if (!lpfc_is_link_up(phba)) {
5071                 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5072                                  "3315 Link is not up %x\n",
5073                                  phba->link_state);
5074                 return;
5075         }
5076
5077         if (phba->link_state == LPFC_CLEAR_LA)
5078                 clear_la_pending = 1;
5079         else
5080                 clear_la_pending = 0;
5081
5082         if (vport->port_state < LPFC_VPORT_READY)
5083                 vport->port_state = LPFC_DISC_AUTH;
5084
5085         lpfc_set_disctmo(vport);
5086
5087         vport->fc_prevDID = vport->fc_myDID;
5088         vport->num_disc_nodes = 0;
5089
5090         /* Start Discovery state <hba_state> */
5091         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5092                          "0202 Start Discovery hba state x%x "
5093                          "Data: x%x x%x x%x\n",
5094                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5095                          vport->fc_adisc_cnt);
5096
5097         /* First do ADISCs - if any */
5098         num_sent = lpfc_els_disc_adisc(vport);
5099
5100         if (num_sent)
5101                 return;
5102
5103         /* Register the VPI for SLI3, NPIV only. */
5104         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5105             !(vport->fc_flag & FC_PT2PT) &&
5106             !(vport->fc_flag & FC_RSCN_MODE) &&
5107             (phba->sli_rev < LPFC_SLI_REV4)) {
5108                 lpfc_issue_clear_la(phba, vport);
5109                 lpfc_issue_reg_vpi(phba, vport);
5110                 return;
5111         }
5112
5113         /*
5114          * For SLI2, we need to set port_state to READY and continue
5115          * discovery.
5116          */
5117         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5118                 /* If we get here, there is nothing to ADISC */
5119                 lpfc_issue_clear_la(phba, vport);
5120
5121                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5122                         vport->num_disc_nodes = 0;
5123                         /* go thru NPR nodes and issue ELS PLOGIs */
5124                         if (vport->fc_npr_cnt)
5125                                 lpfc_els_disc_plogi(vport);
5126
5127                         if (!vport->num_disc_nodes) {
5128                                 spin_lock_irq(shost->host_lock);
5129                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5130                                 spin_unlock_irq(shost->host_lock);
5131                                 lpfc_can_disctmo(vport);
5132                         }
5133                 }
5134                 vport->port_state = LPFC_VPORT_READY;
5135         } else {
5136                 /* Next do PLOGIs - if any */
5137                 num_sent = lpfc_els_disc_plogi(vport);
5138
5139                 if (num_sent)
5140                         return;
5141
5142                 if (vport->fc_flag & FC_RSCN_MODE) {
5143                         /* Check to see if more RSCNs came in while we
5144                          * were processing this one.
5145                          */
5146                         if ((vport->fc_rscn_id_cnt == 0) &&
5147                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5148                                 spin_lock_irq(shost->host_lock);
5149                                 vport->fc_flag &= ~FC_RSCN_MODE;
5150                                 spin_unlock_irq(shost->host_lock);
5151                                 lpfc_can_disctmo(vport);
5152                         } else
5153                                 lpfc_els_handle_rscn(vport);
5154                 }
5155         }
5156         return;
5157 }
5158
5159 /*
5160  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5161  *  ring the match the sppecified nodelist.
5162  */
5163 static void
5164 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5165 {
5166         LIST_HEAD(completions);
5167         struct lpfc_sli *psli;
5168         IOCB_t     *icmd;
5169         struct lpfc_iocbq    *iocb, *next_iocb;
5170         struct lpfc_sli_ring *pring;
5171
5172         psli = &phba->sli;
5173         pring = &psli->ring[LPFC_ELS_RING];
5174
5175         /* Error matching iocb on txq or txcmplq
5176          * First check the txq.
5177          */
5178         spin_lock_irq(&phba->hbalock);
5179         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5180                 if (iocb->context1 != ndlp) {
5181                         continue;
5182                 }
5183                 icmd = &iocb->iocb;
5184                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5185                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5186
5187                         list_move_tail(&iocb->list, &completions);
5188                 }
5189         }
5190
5191         /* Next check the txcmplq */
5192         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5193                 if (iocb->context1 != ndlp) {
5194                         continue;
5195                 }
5196                 icmd = &iocb->iocb;
5197                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5198                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5199                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5200                 }
5201         }
5202         spin_unlock_irq(&phba->hbalock);
5203
5204         /* Cancel all the IOCBs from the completions list */
5205         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5206                               IOERR_SLI_ABORTED);
5207 }
5208
5209 static void
5210 lpfc_disc_flush_list(struct lpfc_vport *vport)
5211 {
5212         struct lpfc_nodelist *ndlp, *next_ndlp;
5213         struct lpfc_hba *phba = vport->phba;
5214
5215         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5216                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5217                                          nlp_listp) {
5218                         if (!NLP_CHK_NODE_ACT(ndlp))
5219                                 continue;
5220                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5221                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5222                                 lpfc_free_tx(phba, ndlp);
5223                         }
5224                 }
5225         }
5226 }
5227
5228 void
5229 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5230 {
5231         lpfc_els_flush_rscn(vport);
5232         lpfc_els_flush_cmd(vport);
5233         lpfc_disc_flush_list(vport);
5234 }
5235
5236 /*****************************************************************************/
5237 /*
5238  * NAME:     lpfc_disc_timeout
5239  *
5240  * FUNCTION: Fibre Channel driver discovery timeout routine.
5241  *
5242  * EXECUTION ENVIRONMENT: interrupt only
5243  *
5244  * CALLED FROM:
5245  *      Timer function
5246  *
5247  * RETURNS:
5248  *      none
5249  */
5250 /*****************************************************************************/
5251 void
5252 lpfc_disc_timeout(unsigned long ptr)
5253 {
5254         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5255         struct lpfc_hba   *phba = vport->phba;
5256         uint32_t tmo_posted;
5257         unsigned long flags = 0;
5258
5259         if (unlikely(!phba))
5260                 return;
5261
5262         spin_lock_irqsave(&vport->work_port_lock, flags);
5263         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5264         if (!tmo_posted)
5265                 vport->work_port_events |= WORKER_DISC_TMO;
5266         spin_unlock_irqrestore(&vport->work_port_lock, flags);
5267
5268         if (!tmo_posted)
5269                 lpfc_worker_wake_up(phba);
5270         return;
5271 }
5272
5273 static void
5274 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5275 {
5276         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5277         struct lpfc_hba  *phba = vport->phba;
5278         struct lpfc_sli  *psli = &phba->sli;
5279         struct lpfc_nodelist *ndlp, *next_ndlp;
5280         LPFC_MBOXQ_t *initlinkmbox;
5281         int rc, clrlaerr = 0;
5282
5283         if (!(vport->fc_flag & FC_DISC_TMO))
5284                 return;
5285
5286         spin_lock_irq(shost->host_lock);
5287         vport->fc_flag &= ~FC_DISC_TMO;
5288         spin_unlock_irq(shost->host_lock);
5289
5290         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5291                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
5292                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5293
5294         switch (vport->port_state) {
5295
5296         case LPFC_LOCAL_CFG_LINK:
5297         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
5298          * FAN
5299          */
5300                                 /* FAN timeout */
5301                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5302                                  "0221 FAN timeout\n");
5303                 /* Start discovery by sending FLOGI, clean up old rpis */
5304                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5305                                          nlp_listp) {
5306                         if (!NLP_CHK_NODE_ACT(ndlp))
5307                                 continue;
5308                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5309                                 continue;
5310                         if (ndlp->nlp_type & NLP_FABRIC) {
5311                                 /* Clean up the ndlp on Fabric connections */
5312                                 lpfc_drop_node(vport, ndlp);
5313
5314                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5315                                 /* Fail outstanding IO now since device
5316                                  * is marked for PLOGI.
5317                                  */
5318                                 lpfc_unreg_rpi(vport, ndlp);
5319                         }
5320                 }
5321                 if (vport->port_state != LPFC_FLOGI) {
5322                         if (phba->sli_rev <= LPFC_SLI_REV3)
5323                                 lpfc_initial_flogi(vport);
5324                         else
5325                                 lpfc_issue_init_vfi(vport);
5326                         return;
5327                 }
5328                 break;
5329
5330         case LPFC_FDISC:
5331         case LPFC_FLOGI:
5332         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5333                 /* Initial FLOGI timeout */
5334                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5335                                  "0222 Initial %s timeout\n",
5336                                  vport->vpi ? "FDISC" : "FLOGI");
5337
5338                 /* Assume no Fabric and go on with discovery.
5339                  * Check for outstanding ELS FLOGI to abort.
5340                  */
5341
5342                 /* FLOGI failed, so just use loop map to make discovery list */
5343                 lpfc_disc_list_loopmap(vport);
5344
5345                 /* Start discovery */
5346                 lpfc_disc_start(vport);
5347                 break;
5348
5349         case LPFC_FABRIC_CFG_LINK:
5350         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5351            NameServer login */
5352                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5353                                  "0223 Timeout while waiting for "
5354                                  "NameServer login\n");
5355                 /* Next look for NameServer ndlp */
5356                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5357                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5358                         lpfc_els_abort(phba, ndlp);
5359
5360                 /* ReStart discovery */
5361                 goto restart_disc;
5362
5363         case LPFC_NS_QRY:
5364         /* Check for wait for NameServer Rsp timeout */
5365                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5366                                  "0224 NameServer Query timeout "
5367                                  "Data: x%x x%x\n",
5368                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5369
5370                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5371                         /* Try it one more time */
5372                         vport->fc_ns_retry++;
5373                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
5374                                          vport->fc_ns_retry, 0);
5375                         if (rc == 0)
5376                                 break;
5377                 }
5378                 vport->fc_ns_retry = 0;
5379
5380 restart_disc:
5381                 /*
5382                  * Discovery is over.
5383                  * set port_state to PORT_READY if SLI2.
5384                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5385                  */
5386                 if (phba->sli_rev < LPFC_SLI_REV4) {
5387                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5388                                 lpfc_issue_reg_vpi(phba, vport);
5389                         else  {
5390                                 lpfc_issue_clear_la(phba, vport);
5391                                 vport->port_state = LPFC_VPORT_READY;
5392                         }
5393                 }
5394
5395                 /* Setup and issue mailbox INITIALIZE LINK command */
5396                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5397                 if (!initlinkmbox) {
5398                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5399                                          "0206 Device Discovery "
5400                                          "completion error\n");
5401                         phba->link_state = LPFC_HBA_ERROR;
5402                         break;
5403                 }
5404
5405                 lpfc_linkdown(phba);
5406                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5407                                phba->cfg_link_speed);
5408                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5409                 initlinkmbox->vport = vport;
5410                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5411                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5412                 lpfc_set_loopback_flag(phba);
5413                 if (rc == MBX_NOT_FINISHED)
5414                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
5415
5416                 break;
5417
5418         case LPFC_DISC_AUTH:
5419         /* Node Authentication timeout */
5420                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5421                                  "0227 Node Authentication timeout\n");
5422                 lpfc_disc_flush_list(vport);
5423
5424                 /*
5425                  * set port_state to PORT_READY if SLI2.
5426                  * cmpl_reg_vpi will set port_state to READY for SLI3.
5427                  */
5428                 if (phba->sli_rev < LPFC_SLI_REV4) {
5429                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5430                                 lpfc_issue_reg_vpi(phba, vport);
5431                         else  { /* NPIV Not enabled */
5432                                 lpfc_issue_clear_la(phba, vport);
5433                                 vport->port_state = LPFC_VPORT_READY;
5434                         }
5435                 }
5436                 break;
5437
5438         case LPFC_VPORT_READY:
5439                 if (vport->fc_flag & FC_RSCN_MODE) {
5440                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5441                                          "0231 RSCN timeout Data: x%x "
5442                                          "x%x\n",
5443                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5444
5445                         /* Cleanup any outstanding ELS commands */
5446                         lpfc_els_flush_cmd(vport);
5447
5448                         lpfc_els_flush_rscn(vport);
5449                         lpfc_disc_flush_list(vport);
5450                 }
5451                 break;
5452
5453         default:
5454                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5455                                  "0273 Unexpected discovery timeout, "
5456                                  "vport State x%x\n", vport->port_state);
5457                 break;
5458         }
5459
5460         switch (phba->link_state) {
5461         case LPFC_CLEAR_LA:
5462                                 /* CLEAR LA timeout */
5463                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5464                                  "0228 CLEAR LA timeout\n");
5465                 clrlaerr = 1;
5466                 break;
5467
5468         case LPFC_LINK_UP:
5469                 lpfc_issue_clear_la(phba, vport);
5470                 /* Drop thru */
5471         case LPFC_LINK_UNKNOWN:
5472         case LPFC_WARM_START:
5473         case LPFC_INIT_START:
5474         case LPFC_INIT_MBX_CMDS:
5475         case LPFC_LINK_DOWN:
5476         case LPFC_HBA_ERROR:
5477                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5478                                  "0230 Unexpected timeout, hba link "
5479                                  "state x%x\n", phba->link_state);
5480                 clrlaerr = 1;
5481                 break;
5482
5483         case LPFC_HBA_READY:
5484                 break;
5485         }
5486
5487         if (clrlaerr) {
5488                 lpfc_disc_flush_list(vport);
5489                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5490                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5491                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5492                 vport->port_state = LPFC_VPORT_READY;
5493         }
5494
5495         return;
5496 }
5497
5498 /*
5499  * This routine handles processing a NameServer REG_LOGIN mailbox
5500  * command upon completion. It is setup in the LPFC_MBOXQ
5501  * as the completion routine when the command is
5502  * handed off to the SLI layer.
5503  */
5504 void
5505 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5506 {
5507         MAILBOX_t *mb = &pmb->u.mb;
5508         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5509         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5510         struct lpfc_vport    *vport = pmb->vport;
5511
5512         pmb->context1 = NULL;
5513         pmb->context2 = NULL;
5514
5515         if (phba->sli_rev < LPFC_SLI_REV4)
5516                 ndlp->nlp_rpi = mb->un.varWords[0];
5517         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5518         ndlp->nlp_type |= NLP_FABRIC;
5519         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5520         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5521                          "0004 rpi:%x DID:%x flg:%x %d map:%x %p\n",
5522                          ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5523                          atomic_read(&ndlp->kref.refcount),
5524                          ndlp->nlp_usg_map, ndlp);
5525         /*
5526          * Start issuing Fabric-Device Management Interface (FDMI) command to
5527          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
5528          * fdmi-on=2 (supporting RPA/hostnmae)
5529          */
5530
5531         if (vport->cfg_fdmi_on & LPFC_FDMI_REG_DELAY)
5532                 mod_timer(&vport->fc_fdmitmo,
5533                           jiffies + msecs_to_jiffies(1000 * 60));
5534         else
5535                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
5536
5537         /* decrement the node reference count held for this callback
5538          * function.
5539          */
5540         lpfc_nlp_put(ndlp);
5541         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5542         kfree(mp);
5543         mempool_free(pmb, phba->mbox_mem_pool);
5544
5545         return;
5546 }
5547
5548 static int
5549 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5550 {
5551         uint16_t *rpi = param;
5552
5553         /* check for active node */
5554         if (!NLP_CHK_NODE_ACT(ndlp))
5555                 return 0;
5556
5557         return ndlp->nlp_rpi == *rpi;
5558 }
5559
5560 static int
5561 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5562 {
5563         return memcmp(&ndlp->nlp_portname, param,
5564                       sizeof(ndlp->nlp_portname)) == 0;
5565 }
5566
5567 static struct lpfc_nodelist *
5568 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5569 {
5570         struct lpfc_nodelist *ndlp;
5571
5572         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5573                 if (filter(ndlp, param)) {
5574                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5575                                          "3185 FIND node filter %p DID "
5576                                          "Data: x%p x%x x%x\n",
5577                                          filter, ndlp, ndlp->nlp_DID,
5578                                          ndlp->nlp_flag);
5579                         return ndlp;
5580                 }
5581         }
5582         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5583                          "3186 FIND node filter %p NOT FOUND.\n", filter);
5584         return NULL;
5585 }
5586
5587 /*
5588  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5589  * returns the node list element pointer else return NULL.
5590  */
5591 struct lpfc_nodelist *
5592 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5593 {
5594         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5595 }
5596
5597 /*
5598  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5599  * returns the node element list pointer else return NULL.
5600  */
5601 struct lpfc_nodelist *
5602 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5603 {
5604         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5605         struct lpfc_nodelist *ndlp;
5606
5607         spin_lock_irq(shost->host_lock);
5608         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5609         spin_unlock_irq(shost->host_lock);
5610         return ndlp;
5611 }
5612
5613 /*
5614  * This routine looks up the ndlp lists for the given RPI. If the rpi
5615  * is found, the routine returns the node element list pointer else
5616  * return NULL.
5617  */
5618 struct lpfc_nodelist *
5619 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5620 {
5621         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5622         struct lpfc_nodelist *ndlp;
5623
5624         spin_lock_irq(shost->host_lock);
5625         ndlp = __lpfc_findnode_rpi(vport, rpi);
5626         spin_unlock_irq(shost->host_lock);
5627         return ndlp;
5628 }
5629
5630 /**
5631  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5632  * @phba: pointer to lpfc hba data structure.
5633  * @vpi: the physical host virtual N_Port identifier.
5634  *
5635  * This routine finds a vport on a HBA (referred by @phba) through a
5636  * @vpi. The function walks the HBA's vport list and returns the address
5637  * of the vport with the matching @vpi.
5638  *
5639  * Return code
5640  *    NULL - No vport with the matching @vpi found
5641  *    Otherwise - Address to the vport with the matching @vpi.
5642  **/
5643 struct lpfc_vport *
5644 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5645 {
5646         struct lpfc_vport *vport;
5647         unsigned long flags;
5648         int i = 0;
5649
5650         /* The physical ports are always vpi 0 - translate is unnecessary. */
5651         if (vpi > 0) {
5652                 /*
5653                  * Translate the physical vpi to the logical vpi.  The
5654                  * vport stores the logical vpi.
5655                  */
5656                 for (i = 0; i < phba->max_vpi; i++) {
5657                         if (vpi == phba->vpi_ids[i])
5658                                 break;
5659                 }
5660
5661                 if (i >= phba->max_vpi) {
5662                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
5663                                          "2936 Could not find Vport mapped "
5664                                          "to vpi %d\n", vpi);
5665                         return NULL;
5666                 }
5667         }
5668
5669         spin_lock_irqsave(&phba->hbalock, flags);
5670         list_for_each_entry(vport, &phba->port_list, listentry) {
5671                 if (vport->vpi == i) {
5672                         spin_unlock_irqrestore(&phba->hbalock, flags);
5673                         return vport;
5674                 }
5675         }
5676         spin_unlock_irqrestore(&phba->hbalock, flags);
5677         return NULL;
5678 }
5679
5680 void
5681 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5682               uint32_t did)
5683 {
5684         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5685
5686         lpfc_initialize_node(vport, ndlp, did);
5687         INIT_LIST_HEAD(&ndlp->nlp_listp);
5688         if (vport->phba->sli_rev == LPFC_SLI_REV4) {
5689                 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
5690                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5691                                  "0007 rpi:%x DID:%x flg:%x refcnt:%d "
5692                                  "map:%x %p\n", ndlp->nlp_rpi, ndlp->nlp_DID,
5693                                  ndlp->nlp_flag,
5694                                  atomic_read(&ndlp->kref.refcount),
5695                                  ndlp->nlp_usg_map, ndlp);
5696
5697                 ndlp->active_rrqs_xri_bitmap =
5698                                 mempool_alloc(vport->phba->active_rrq_pool,
5699                                               GFP_KERNEL);
5700                 if (ndlp->active_rrqs_xri_bitmap)
5701                         memset(ndlp->active_rrqs_xri_bitmap, 0,
5702                                ndlp->phba->cfg_rrq_xri_bitmap_sz);
5703         }
5704
5705
5706
5707         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5708                 "node init:       did:x%x",
5709                 ndlp->nlp_DID, 0, 0);
5710
5711         return;
5712 }
5713
5714 /* This routine releases all resources associated with a specifc NPort's ndlp
5715  * and mempool_free's the nodelist.
5716  */
5717 static void
5718 lpfc_nlp_release(struct kref *kref)
5719 {
5720         struct lpfc_hba *phba;
5721         unsigned long flags;
5722         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5723                                                   kref);
5724
5725         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5726                 "node release:    did:x%x flg:x%x type:x%x",
5727                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5728
5729         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5730                         "0279 lpfc_nlp_release: ndlp:x%p did %x "
5731                         "usgmap:x%x refcnt:%d rpi:%x\n",
5732                         (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
5733                         atomic_read(&ndlp->kref.refcount), ndlp->nlp_rpi);
5734
5735         /* remove ndlp from action. */
5736         lpfc_nlp_remove(ndlp->vport, ndlp);
5737
5738         /* clear the ndlp active flag for all release cases */
5739         phba = ndlp->phba;
5740         spin_lock_irqsave(&phba->ndlp_lock, flags);
5741         NLP_CLR_NODE_ACT(ndlp);
5742         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5743         if (phba->sli_rev == LPFC_SLI_REV4)
5744                 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5745
5746         /* free ndlp memory for final ndlp release */
5747         if (NLP_CHK_FREE_REQ(ndlp)) {
5748                 kfree(ndlp->lat_data);
5749                 if (phba->sli_rev == LPFC_SLI_REV4)
5750                         mempool_free(ndlp->active_rrqs_xri_bitmap,
5751                                      ndlp->phba->active_rrq_pool);
5752                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5753         }
5754 }
5755
5756 /* This routine bumps the reference count for a ndlp structure to ensure
5757  * that one discovery thread won't free a ndlp while another discovery thread
5758  * is using it.
5759  */
5760 struct lpfc_nodelist *
5761 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5762 {
5763         struct lpfc_hba *phba;
5764         unsigned long flags;
5765
5766         if (ndlp) {
5767                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5768                         "node get:        did:x%x flg:x%x refcnt:x%x",
5769                         ndlp->nlp_DID, ndlp->nlp_flag,
5770                         atomic_read(&ndlp->kref.refcount));
5771                 /* The check of ndlp usage to prevent incrementing the
5772                  * ndlp reference count that is in the process of being
5773                  * released.
5774                  */
5775                 phba = ndlp->phba;
5776                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5777                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5778                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5779                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5780                                 "0276 lpfc_nlp_get: ndlp:x%p "
5781                                 "usgmap:x%x refcnt:%d\n",
5782                                 (void *)ndlp, ndlp->nlp_usg_map,
5783                                 atomic_read(&ndlp->kref.refcount));
5784                         return NULL;
5785                 } else
5786                         kref_get(&ndlp->kref);
5787                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5788         }
5789         return ndlp;
5790 }
5791
5792 /* This routine decrements the reference count for a ndlp structure. If the
5793  * count goes to 0, this indicates the the associated nodelist should be
5794  * freed. Returning 1 indicates the ndlp resource has been released; on the
5795  * other hand, returning 0 indicates the ndlp resource has not been released
5796  * yet.
5797  */
5798 int
5799 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5800 {
5801         struct lpfc_hba *phba;
5802         unsigned long flags;
5803
5804         if (!ndlp)
5805                 return 1;
5806
5807         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5808         "node put:        did:x%x flg:x%x refcnt:x%x",
5809                 ndlp->nlp_DID, ndlp->nlp_flag,
5810                 atomic_read(&ndlp->kref.refcount));
5811         phba = ndlp->phba;
5812         spin_lock_irqsave(&phba->ndlp_lock, flags);
5813         /* Check the ndlp memory free acknowledge flag to avoid the
5814          * possible race condition that kref_put got invoked again
5815          * after previous one has done ndlp memory free.
5816          */
5817         if (NLP_CHK_FREE_ACK(ndlp)) {
5818                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5819                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5820                                 "0274 lpfc_nlp_put: ndlp:x%p "
5821                                 "usgmap:x%x refcnt:%d\n",
5822                                 (void *)ndlp, ndlp->nlp_usg_map,
5823                                 atomic_read(&ndlp->kref.refcount));
5824                 return 1;
5825         }
5826         /* Check the ndlp inactivate log flag to avoid the possible
5827          * race condition that kref_put got invoked again after ndlp
5828          * is already in inactivating state.
5829          */
5830         if (NLP_CHK_IACT_REQ(ndlp)) {
5831                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5832                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5833                                 "0275 lpfc_nlp_put: ndlp:x%p "
5834                                 "usgmap:x%x refcnt:%d\n",
5835                                 (void *)ndlp, ndlp->nlp_usg_map,
5836                                 atomic_read(&ndlp->kref.refcount));
5837                 return 1;
5838         }
5839         /* For last put, mark the ndlp usage flags to make sure no
5840          * other kref_get and kref_put on the same ndlp shall get
5841          * in between the process when the final kref_put has been
5842          * invoked on this ndlp.
5843          */
5844         if (atomic_read(&ndlp->kref.refcount) == 1) {
5845                 /* Indicate ndlp is put to inactive state. */
5846                 NLP_SET_IACT_REQ(ndlp);
5847                 /* Acknowledge ndlp memory free has been seen. */
5848                 if (NLP_CHK_FREE_REQ(ndlp))
5849                         NLP_SET_FREE_ACK(ndlp);
5850         }
5851         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5852         /* Note, the kref_put returns 1 when decrementing a reference
5853          * count that was 1, it invokes the release callback function,
5854          * but it still left the reference count as 1 (not actually
5855          * performs the last decrementation). Otherwise, it actually
5856          * decrements the reference count and returns 0.
5857          */
5858         return kref_put(&ndlp->kref, lpfc_nlp_release);
5859 }
5860
5861 /* This routine free's the specified nodelist if it is not in use
5862  * by any other discovery thread. This routine returns 1 if the
5863  * ndlp has been freed. A return value of 0 indicates the ndlp is
5864  * not yet been released.
5865  */
5866 int
5867 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5868 {
5869         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5870                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5871                 ndlp->nlp_DID, ndlp->nlp_flag,
5872                 atomic_read(&ndlp->kref.refcount));
5873         if (atomic_read(&ndlp->kref.refcount) == 1)
5874                 if (lpfc_nlp_put(ndlp))
5875                         return 1;
5876         return 0;
5877 }
5878
5879 /**
5880  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5881  * @phba: Pointer to hba context object.
5882  *
5883  * This function iterate through all FC nodes associated
5884  * will all vports to check if there is any node with
5885  * fc_rports associated with it. If there is an fc_rport
5886  * associated with the node, then the node is either in
5887  * discovered state or its devloss_timer is pending.
5888  */
5889 static int
5890 lpfc_fcf_inuse(struct lpfc_hba *phba)
5891 {
5892         struct lpfc_vport **vports;
5893         int i, ret = 0;
5894         struct lpfc_nodelist *ndlp;
5895         struct Scsi_Host  *shost;
5896
5897         vports = lpfc_create_vport_work_array(phba);
5898
5899         /* If driver cannot allocate memory, indicate fcf is in use */
5900         if (!vports)
5901                 return 1;
5902
5903         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5904                 shost = lpfc_shost_from_vport(vports[i]);
5905                 spin_lock_irq(shost->host_lock);
5906                 /*
5907                  * IF the CVL_RCVD bit is not set then we have sent the
5908                  * flogi.
5909                  * If dev_loss fires while we are waiting we do not want to
5910                  * unreg the fcf.
5911                  */
5912                 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
5913                         spin_unlock_irq(shost->host_lock);
5914                         ret =  1;
5915                         goto out;
5916                 }
5917                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5918                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5919                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5920                                 ret = 1;
5921                                 spin_unlock_irq(shost->host_lock);
5922                                 goto out;
5923                         } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5924                                 ret = 1;
5925                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5926                                                 "2624 RPI %x DID %x flag %x "
5927                                                 "still logged in\n",
5928                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
5929                                                 ndlp->nlp_flag);
5930                         }
5931                 }
5932                 spin_unlock_irq(shost->host_lock);
5933         }
5934 out:
5935         lpfc_destroy_vport_work_array(phba, vports);
5936         return ret;
5937 }
5938
5939 /**
5940  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5941  * @phba: Pointer to hba context object.
5942  * @mboxq: Pointer to mailbox object.
5943  *
5944  * This function frees memory associated with the mailbox command.
5945  */
5946 void
5947 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5948 {
5949         struct lpfc_vport *vport = mboxq->vport;
5950         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5951
5952         if (mboxq->u.mb.mbxStatus) {
5953                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5954                         "2555 UNREG_VFI mbxStatus error x%x "
5955                         "HBA state x%x\n",
5956                         mboxq->u.mb.mbxStatus, vport->port_state);
5957         }
5958         spin_lock_irq(shost->host_lock);
5959         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5960         spin_unlock_irq(shost->host_lock);
5961         mempool_free(mboxq, phba->mbox_mem_pool);
5962         return;
5963 }
5964
5965 /**
5966  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5967  * @phba: Pointer to hba context object.
5968  * @mboxq: Pointer to mailbox object.
5969  *
5970  * This function frees memory associated with the mailbox command.
5971  */
5972 static void
5973 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5974 {
5975         struct lpfc_vport *vport = mboxq->vport;
5976
5977         if (mboxq->u.mb.mbxStatus) {
5978                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5979                         "2550 UNREG_FCFI mbxStatus error x%x "
5980                         "HBA state x%x\n",
5981                         mboxq->u.mb.mbxStatus, vport->port_state);
5982         }
5983         mempool_free(mboxq, phba->mbox_mem_pool);
5984         return;
5985 }
5986
5987 /**
5988  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5989  * @phba: Pointer to hba context object.
5990  *
5991  * This function prepare the HBA for unregistering the currently registered
5992  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5993  * VFIs.
5994  */
5995 int
5996 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5997 {
5998         struct lpfc_vport **vports;
5999         struct lpfc_nodelist *ndlp;
6000         struct Scsi_Host *shost;
6001         int i = 0, rc;
6002
6003         /* Unregister RPIs */
6004         if (lpfc_fcf_inuse(phba))
6005                 lpfc_unreg_hba_rpis(phba);
6006
6007         /* At this point, all discovery is aborted */
6008         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6009
6010         /* Unregister VPIs */
6011         vports = lpfc_create_vport_work_array(phba);
6012         if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6013                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6014                         /* Stop FLOGI/FDISC retries */
6015                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6016                         if (ndlp)
6017                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6018                         lpfc_cleanup_pending_mbox(vports[i]);
6019                         if (phba->sli_rev == LPFC_SLI_REV4)
6020                                 lpfc_sli4_unreg_all_rpis(vports[i]);
6021                         lpfc_mbx_unreg_vpi(vports[i]);
6022                         shost = lpfc_shost_from_vport(vports[i]);
6023                         spin_lock_irq(shost->host_lock);
6024                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6025                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6026                         spin_unlock_irq(shost->host_lock);
6027                 }
6028         lpfc_destroy_vport_work_array(phba, vports);
6029         if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6030                 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6031                 if (ndlp)
6032                         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6033                 lpfc_cleanup_pending_mbox(phba->pport);
6034                 if (phba->sli_rev == LPFC_SLI_REV4)
6035                         lpfc_sli4_unreg_all_rpis(phba->pport);
6036                 lpfc_mbx_unreg_vpi(phba->pport);
6037                 shost = lpfc_shost_from_vport(phba->pport);
6038                 spin_lock_irq(shost->host_lock);
6039                 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6040                 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6041                 spin_unlock_irq(shost->host_lock);
6042         }
6043
6044         /* Cleanup any outstanding ELS commands */
6045         lpfc_els_flush_all_cmd(phba);
6046
6047         /* Unregister the physical port VFI */
6048         rc = lpfc_issue_unreg_vfi(phba->pport);
6049         return rc;
6050 }
6051
6052 /**
6053  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6054  * @phba: Pointer to hba context object.
6055  *
6056  * This function issues synchronous unregister FCF mailbox command to HBA to
6057  * unregister the currently registered FCF record. The driver does not reset
6058  * the driver FCF usage state flags.
6059  *
6060  * Return 0 if successfully issued, none-zero otherwise.
6061  */
6062 int
6063 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6064 {
6065         LPFC_MBOXQ_t *mbox;
6066         int rc;
6067
6068         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6069         if (!mbox) {
6070                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6071                                 "2551 UNREG_FCFI mbox allocation failed"
6072                                 "HBA state x%x\n", phba->pport->port_state);
6073                 return -ENOMEM;
6074         }
6075         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6076         mbox->vport = phba->pport;
6077         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6078         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6079
6080         if (rc == MBX_NOT_FINISHED) {
6081                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6082                                 "2552 Unregister FCFI command failed rc x%x "
6083                                 "HBA state x%x\n",
6084                                 rc, phba->pport->port_state);
6085                 return -EINVAL;
6086         }
6087         return 0;
6088 }
6089
6090 /**
6091  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6092  * @phba: Pointer to hba context object.
6093  *
6094  * This function unregisters the currently reigstered FCF. This function
6095  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6096  */
6097 void
6098 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6099 {
6100         int rc;
6101
6102         /* Preparation for unregistering fcf */
6103         rc = lpfc_unregister_fcf_prep(phba);
6104         if (rc) {
6105                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6106                                 "2748 Failed to prepare for unregistering "
6107                                 "HBA's FCF record: rc=%d\n", rc);
6108                 return;
6109         }
6110
6111         /* Now, unregister FCF record and reset HBA FCF state */
6112         rc = lpfc_sli4_unregister_fcf(phba);
6113         if (rc)
6114                 return;
6115         /* Reset HBA FCF states after successful unregister FCF */
6116         phba->fcf.fcf_flag = 0;
6117         phba->fcf.current_rec.flag = 0;
6118
6119         /*
6120          * If driver is not unloading, check if there is any other
6121          * FCF record that can be used for discovery.
6122          */
6123         if ((phba->pport->load_flag & FC_UNLOADING) ||
6124             (phba->link_state < LPFC_LINK_UP))
6125                 return;
6126
6127         /* This is considered as the initial FCF discovery scan */
6128         spin_lock_irq(&phba->hbalock);
6129         phba->fcf.fcf_flag |= FCF_INIT_DISC;
6130         spin_unlock_irq(&phba->hbalock);
6131
6132         /* Reset FCF roundrobin bmask for new discovery */
6133         lpfc_sli4_clear_fcf_rr_bmask(phba);
6134
6135         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6136
6137         if (rc) {
6138                 spin_lock_irq(&phba->hbalock);
6139                 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6140                 spin_unlock_irq(&phba->hbalock);
6141                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6142                                 "2553 lpfc_unregister_unused_fcf failed "
6143                                 "to read FCF record HBA state x%x\n",
6144                                 phba->pport->port_state);
6145         }
6146 }
6147
6148 /**
6149  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6150  * @phba: Pointer to hba context object.
6151  *
6152  * This function just unregisters the currently reigstered FCF. It does not
6153  * try to find another FCF for discovery.
6154  */
6155 void
6156 lpfc_unregister_fcf(struct lpfc_hba *phba)
6157 {
6158         int rc;
6159
6160         /* Preparation for unregistering fcf */
6161         rc = lpfc_unregister_fcf_prep(phba);
6162         if (rc) {
6163                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6164                                 "2749 Failed to prepare for unregistering "
6165                                 "HBA's FCF record: rc=%d\n", rc);
6166                 return;
6167         }
6168
6169         /* Now, unregister FCF record and reset HBA FCF state */
6170         rc = lpfc_sli4_unregister_fcf(phba);
6171         if (rc)
6172                 return;
6173         /* Set proper HBA FCF states after successful unregister FCF */
6174         spin_lock_irq(&phba->hbalock);
6175         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6176         spin_unlock_irq(&phba->hbalock);
6177 }
6178
6179 /**
6180  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6181  * @phba: Pointer to hba context object.
6182  *
6183  * This function check if there are any connected remote port for the FCF and
6184  * if all the devices are disconnected, this function unregister FCFI.
6185  * This function also tries to use another FCF for discovery.
6186  */
6187 void
6188 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6189 {
6190         /*
6191          * If HBA is not running in FIP mode, if HBA does not support
6192          * FCoE, if FCF discovery is ongoing, or if FCF has not been
6193          * registered, do nothing.
6194          */
6195         spin_lock_irq(&phba->hbalock);
6196         if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6197             !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6198             !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6199             (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6200             (phba->pport->port_state == LPFC_FLOGI)) {
6201                 spin_unlock_irq(&phba->hbalock);
6202                 return;
6203         }
6204         spin_unlock_irq(&phba->hbalock);
6205
6206         if (lpfc_fcf_inuse(phba))
6207                 return;
6208
6209         lpfc_unregister_fcf_rescan(phba);
6210 }
6211
6212 /**
6213  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6214  * @phba: Pointer to hba context object.
6215  * @buff: Buffer containing the FCF connection table as in the config
6216  *         region.
6217  * This function create driver data structure for the FCF connection
6218  * record table read from config region 23.
6219  */
6220 static void
6221 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6222         uint8_t *buff)
6223 {
6224         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6225         struct lpfc_fcf_conn_hdr *conn_hdr;
6226         struct lpfc_fcf_conn_rec *conn_rec;
6227         uint32_t record_count;
6228         int i;
6229
6230         /* Free the current connect table */
6231         list_for_each_entry_safe(conn_entry, next_conn_entry,
6232                 &phba->fcf_conn_rec_list, list) {
6233                 list_del_init(&conn_entry->list);
6234                 kfree(conn_entry);
6235         }
6236
6237         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6238         record_count = conn_hdr->length * sizeof(uint32_t)/
6239                 sizeof(struct lpfc_fcf_conn_rec);
6240
6241         conn_rec = (struct lpfc_fcf_conn_rec *)
6242                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6243
6244         for (i = 0; i < record_count; i++) {
6245                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6246                         continue;
6247                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6248                         GFP_KERNEL);
6249                 if (!conn_entry) {
6250                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6251                                 "2566 Failed to allocate connection"
6252                                 " table entry\n");
6253                         return;
6254                 }
6255
6256                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6257                         sizeof(struct lpfc_fcf_conn_rec));
6258                 list_add_tail(&conn_entry->list,
6259                         &phba->fcf_conn_rec_list);
6260         }
6261
6262         if (!list_empty(&phba->fcf_conn_rec_list)) {
6263                 i = 0;
6264                 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6265                                     list) {
6266                         conn_rec = &conn_entry->conn_rec;
6267                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6268                                         "3345 FCF connection list rec[%02d]: "
6269                                         "flags:x%04x, vtag:x%04x, "
6270                                         "fabric_name:x%02x:%02x:%02x:%02x:"
6271                                         "%02x:%02x:%02x:%02x, "
6272                                         "switch_name:x%02x:%02x:%02x:%02x:"
6273                                         "%02x:%02x:%02x:%02x\n", i++,
6274                                         conn_rec->flags, conn_rec->vlan_tag,
6275                                         conn_rec->fabric_name[0],
6276                                         conn_rec->fabric_name[1],
6277                                         conn_rec->fabric_name[2],
6278                                         conn_rec->fabric_name[3],
6279                                         conn_rec->fabric_name[4],
6280                                         conn_rec->fabric_name[5],
6281                                         conn_rec->fabric_name[6],
6282                                         conn_rec->fabric_name[7],
6283                                         conn_rec->switch_name[0],
6284                                         conn_rec->switch_name[1],
6285                                         conn_rec->switch_name[2],
6286                                         conn_rec->switch_name[3],
6287                                         conn_rec->switch_name[4],
6288                                         conn_rec->switch_name[5],
6289                                         conn_rec->switch_name[6],
6290                                         conn_rec->switch_name[7]);
6291                 }
6292         }
6293 }
6294
6295 /**
6296  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6297  * @phba: Pointer to hba context object.
6298  * @buff: Buffer containing the FCoE parameter data structure.
6299  *
6300  *  This function update driver data structure with config
6301  *  parameters read from config region 23.
6302  */
6303 static void
6304 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6305                         uint8_t *buff)
6306 {
6307         struct lpfc_fip_param_hdr *fcoe_param_hdr;
6308         struct lpfc_fcoe_params *fcoe_param;
6309
6310         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6311                 buff;
6312         fcoe_param = (struct lpfc_fcoe_params *)
6313                 (buff + sizeof(struct lpfc_fip_param_hdr));
6314
6315         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6316                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6317                 return;
6318
6319         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6320                 phba->valid_vlan = 1;
6321                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6322                         0xFFF;
6323         }
6324
6325         phba->fc_map[0] = fcoe_param->fc_map[0];
6326         phba->fc_map[1] = fcoe_param->fc_map[1];
6327         phba->fc_map[2] = fcoe_param->fc_map[2];
6328         return;
6329 }
6330
6331 /**
6332  * lpfc_get_rec_conf23 - Get a record type in config region data.
6333  * @buff: Buffer containing config region 23 data.
6334  * @size: Size of the data buffer.
6335  * @rec_type: Record type to be searched.
6336  *
6337  * This function searches config region data to find the beginning
6338  * of the record specified by record_type. If record found, this
6339  * function return pointer to the record else return NULL.
6340  */
6341 static uint8_t *
6342 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6343 {
6344         uint32_t offset = 0, rec_length;
6345
6346         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6347                 (size < sizeof(uint32_t)))
6348                 return NULL;
6349
6350         rec_length = buff[offset + 1];
6351
6352         /*
6353          * One TLV record has one word header and number of data words
6354          * specified in the rec_length field of the record header.
6355          */
6356         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6357                 <= size) {
6358                 if (buff[offset] == rec_type)
6359                         return &buff[offset];
6360
6361                 if (buff[offset] == LPFC_REGION23_LAST_REC)
6362                         return NULL;
6363
6364                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6365                 rec_length = buff[offset + 1];
6366         }
6367         return NULL;
6368 }
6369
6370 /**
6371  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6372  * @phba: Pointer to lpfc_hba data structure.
6373  * @buff: Buffer containing config region 23 data.
6374  * @size: Size of the data buffer.
6375  *
6376  * This function parses the FCoE config parameters in config region 23 and
6377  * populate driver data structure with the parameters.
6378  */
6379 void
6380 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6381                 uint8_t *buff,
6382                 uint32_t size)
6383 {
6384         uint32_t offset = 0;
6385         uint8_t *rec_ptr;
6386
6387         /*
6388          * If data size is less than 2 words signature and version cannot be
6389          * verified.
6390          */
6391         if (size < 2*sizeof(uint32_t))
6392                 return;
6393
6394         /* Check the region signature first */
6395         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6396                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6397                         "2567 Config region 23 has bad signature\n");
6398                 return;
6399         }
6400
6401         offset += 4;
6402
6403         /* Check the data structure version */
6404         if (buff[offset] != LPFC_REGION23_VERSION) {
6405                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6406                         "2568 Config region 23 has bad version\n");
6407                 return;
6408         }
6409         offset += 4;
6410
6411         /* Read FCoE param record */
6412         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6413                         size - offset, FCOE_PARAM_TYPE);
6414         if (rec_ptr)
6415                 lpfc_read_fcoe_param(phba, rec_ptr);
6416
6417         /* Read FCF connection table */
6418         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6419                 size - offset, FCOE_CONN_TBL_TYPE);
6420         if (rec_ptr)
6421                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
6422
6423 }