err.no Git - linux-2.6/blob - 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) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_vport.h"
  40 #include "lpfc_debugfs.h"
  41
  42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  43 static uint8_t lpfcAlpaArray[] = {
  44         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  45         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  46         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  47         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  48         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  49         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  50         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  51         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  52         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  53         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  54         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  55         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  56         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  57 };
  58
  59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  60
  61 void
  62 lpfc_terminate_rport_io(struct fc_rport *rport)
  63 {
  64         struct lpfc_rport_data *rdata;
  65         struct lpfc_nodelist * ndlp;
  66         struct lpfc_hba *phba;
  67
  68         rdata = rport->dd_data;
  69         ndlp = rdata->pnode;
  70
  71         if (!ndlp) {
  72                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  73                         printk(KERN_ERR "Cannot find remote node"
  74                         " to terminate I/O Data x%x\n",
  75                         rport->port_id);
  76                 return;
  77         }
  78
  79         phba  = ndlp->vport->phba;
  80
  81         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  82                 "rport terminate: sid:x%x did:x%x flg:x%x",
  83                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  84
  85         if (ndlp->nlp_sid != NLP_NO_SID) {
  86                 lpfc_sli_abort_iocb(ndlp->vport,
  87                         &phba->sli.ring[phba->sli.fcp_ring],
  88                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  89         }
  90
  91         /*
  92          * A device is normally blocked for rediscovery and unblocked when
  93          * devloss timeout happens.  In case a vport is removed or driver
  94          * unloaded before devloss timeout happens, we need to unblock here.
  95          */
  96         scsi_target_unblock(&rport->dev);
  97         return;
  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
 112         rdata = rport->dd_data;
 113         ndlp = rdata->pnode;
 114
 115         if (!ndlp) {
 116                 if (rport->scsi_target_id != -1) {
 117                         printk(KERN_ERR "Cannot find remote node"
 118                                 " for rport in dev_loss_tmo_callbk x%x\n",
 119                                 rport->port_id);
 120                 }
 121                 return;
 122         }
 123
 124         vport = ndlp->vport;
 125         phba  = vport->phba;
 126
 127         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 128                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 129                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 130
 131         evtp = &ndlp->dev_loss_evt;
 132
 133         if (!list_empty(&evtp->evt_listp))
 134                 return;
 135
 136         spin_lock_irq(&phba->hbalock);
 137         evtp->evt_arg1  = ndlp;
 138         evtp->evt       = LPFC_EVT_DEV_LOSS;
 139         list_add_tail(&evtp->evt_listp, &phba->work_list);
 140         if (phba->work_wait)
 141                 wake_up(phba->work_wait);
 142
 143         spin_unlock_irq(&phba->hbalock);
 144
 145         return;
 146 }
 147
 148 /*
 149  * This function is called from the worker thread when dev_loss_tmo
 150  * expire.
 151  */
 152 void
 153 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 154 {
 155         struct lpfc_rport_data *rdata;
 156         struct fc_rport   *rport;
 157         struct lpfc_vport *vport;
 158         struct lpfc_hba   *phba;
 159         uint8_t *name;
 160         int warn_on = 0;
 161
 162         rport = ndlp->rport;
 163
 164         if (!rport)
 165                 return;
 166
 167         rdata = rport->dd_data;
 168         name = (uint8_t *) &ndlp->nlp_portname;
 169         vport = ndlp->vport;
 170         phba  = vport->phba;
 171
 172         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 173                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 174                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 175
 176         if (!(vport->load_flag & FC_UNLOADING) &&
 177             ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 178                 return;
 179
 180         if (ndlp->nlp_type & NLP_FABRIC) {
 181                 int  put_node;
 182                 int  put_rport;
 183
 184                 /* We will clean up these Nodes in linkup */
 185                 put_node = rdata->pnode != NULL;
 186                 put_rport = ndlp->rport != NULL;
 187                 rdata->pnode = NULL;
 188                 ndlp->rport = NULL;
 189                 if (put_node)
 190                         lpfc_nlp_put(ndlp);
 191                 if (put_rport)
 192                         put_device(&rport->dev);
 193                 return;
 194         }
 195
 196         if (ndlp->nlp_sid != NLP_NO_SID) {
 197                 warn_on = 1;
 198                 /* flush the target */
 199                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 200                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 201         }
 202         if (vport->load_flag & FC_UNLOADING)
 203                 warn_on = 0;
 204
 205         if (warn_on) {
 206                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 207                                  "0203 Devloss timeout on "
 208                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 209                                  "NPort x%x Data: x%x x%x x%x\n",
 210                                  *name, *(name+1), *(name+2), *(name+3),
 211                                  *(name+4), *(name+5), *(name+6), *(name+7),
 212                                  ndlp->nlp_DID, ndlp->nlp_flag,
 213                                  ndlp->nlp_state, ndlp->nlp_rpi);
 214         } else {
 215                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 216                                  "0204 Devloss timeout on "
 217                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 218                                  "NPort x%x Data: x%x x%x x%x\n",
 219                                  *name, *(name+1), *(name+2), *(name+3),
 220                                  *(name+4), *(name+5), *(name+6), *(name+7),
 221                                  ndlp->nlp_DID, ndlp->nlp_flag,
 222                                  ndlp->nlp_state, ndlp->nlp_rpi);
 223         }
 224
 225         if (!(vport->load_flag & FC_UNLOADING) &&
 226             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 227             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 228             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 229                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 230         else {
 231                 int  put_node;
 232                 int  put_rport;
 233
 234                 put_node = rdata->pnode != NULL;
 235                 put_rport = ndlp->rport != NULL;
 236                 rdata->pnode = NULL;
 237                 ndlp->rport = NULL;
 238                 if (put_node)
 239                         lpfc_nlp_put(ndlp);
 240                 if (put_rport)
 241                         put_device(&rport->dev);
 242         }
 243 }
 244
 245
 246 void
 247 lpfc_worker_wake_up(struct lpfc_hba *phba)
 248 {
 249         wake_up(phba->work_wait);
 250         return;
 251 }
 252
 253 static void
 254 lpfc_work_list_done(struct lpfc_hba *phba)
 255 {
 256         struct lpfc_work_evt  *evtp = NULL;
 257         struct lpfc_nodelist  *ndlp;
 258         int free_evt;
 259
 260         spin_lock_irq(&phba->hbalock);
 261         while (!list_empty(&phba->work_list)) {
 262                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 263                                  evt_listp);
 264                 spin_unlock_irq(&phba->hbalock);
 265                 free_evt = 1;
 266                 switch (evtp->evt) {
 267                 case LPFC_EVT_ELS_RETRY:
 268                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 269                         lpfc_els_retry_delay_handler(ndlp);
 270                         free_evt = 0; /* evt is part of ndlp */
 271                         break;
 272                 case LPFC_EVT_DEV_LOSS:
 273                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 274                         lpfc_nlp_get(ndlp);
 275                         lpfc_dev_loss_tmo_handler(ndlp);
 276                         free_evt = 0;
 277                         lpfc_nlp_put(ndlp);
 278                         break;
 279                 case LPFC_EVT_ONLINE:
 280                         if (phba->link_state < LPFC_LINK_DOWN)
 281                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 282                         else
 283                                 *(int *) (evtp->evt_arg1) = 0;
 284                         complete((struct completion *)(evtp->evt_arg2));
 285                         break;
 286                 case LPFC_EVT_OFFLINE_PREP:
 287                         if (phba->link_state >= LPFC_LINK_DOWN)
 288                                 lpfc_offline_prep(phba);
 289                         *(int *)(evtp->evt_arg1) = 0;
 290                         complete((struct completion *)(evtp->evt_arg2));
 291                         break;
 292                 case LPFC_EVT_OFFLINE:
 293                         lpfc_offline(phba);
 294                         lpfc_sli_brdrestart(phba);
 295                         *(int *)(evtp->evt_arg1) =
 296                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 297                         lpfc_unblock_mgmt_io(phba);
 298                         complete((struct completion *)(evtp->evt_arg2));
 299                         break;
 300                 case LPFC_EVT_WARM_START:
 301                         lpfc_offline(phba);
 302                         lpfc_reset_barrier(phba);
 303                         lpfc_sli_brdreset(phba);
 304                         lpfc_hba_down_post(phba);
 305                         *(int *)(evtp->evt_arg1) =
 306                                 lpfc_sli_brdready(phba, HS_MBRDY);
 307                         lpfc_unblock_mgmt_io(phba);
 308                         complete((struct completion *)(evtp->evt_arg2));
 309                         break;
 310                 case LPFC_EVT_KILL:
 311                         lpfc_offline(phba);
 312                         *(int *)(evtp->evt_arg1)
 313                                 = (phba->pport->stopped)
 314                                         ? 0 : lpfc_sli_brdkill(phba);
 315                         lpfc_unblock_mgmt_io(phba);
 316                         complete((struct completion *)(evtp->evt_arg2));
 317                         break;
 318                 }
 319                 if (free_evt)
 320                         kfree(evtp);
 321                 spin_lock_irq(&phba->hbalock);
 322         }
 323         spin_unlock_irq(&phba->hbalock);
 324
 325 }
 326
 327 static void
 328 lpfc_work_done(struct lpfc_hba *phba)
 329 {
 330         struct lpfc_sli_ring *pring;
 331         uint32_t ha_copy, status, control, work_port_events;
 332         struct lpfc_vport **vports;
 333         struct lpfc_vport *vport;
 334         int i;
 335
 336         spin_lock_irq(&phba->hbalock);
 337         ha_copy = phba->work_ha;
 338         phba->work_ha = 0;
 339         spin_unlock_irq(&phba->hbalock);
 340
 341         if (ha_copy & HA_ERATT)
 342                 lpfc_handle_eratt(phba);
 343
 344         if (ha_copy & HA_MBATT)
 345                 lpfc_sli_handle_mb_event(phba);
 346
 347         if (ha_copy & HA_LATT)
 348                 lpfc_handle_latt(phba);
 349         vports = lpfc_create_vport_work_array(phba);
 350         if (vports != NULL)
 351                 for(i = 0; i < LPFC_MAX_VPORTS; i++) {
 352                         /*
 353                          * We could have no vports in array if unloading, so if
 354                          * this happens then just use the pport
 355                          */
 356                         if (vports[i] == NULL && i == 0)
 357                                 vport = phba->pport;
 358                         else
 359                                 vport = vports[i];
 360                         if (vport == NULL)
 361                                 break;
 362                         work_port_events = vport->work_port_events;
 363                         if (work_port_events & WORKER_DISC_TMO)
 364                                 lpfc_disc_timeout_handler(vport);
 365                         if (work_port_events & WORKER_ELS_TMO)
 366                                 lpfc_els_timeout_handler(vport);
 367                         if (work_port_events & WORKER_HB_TMO)
 368                                 lpfc_hb_timeout_handler(phba);
 369                         if (work_port_events & WORKER_MBOX_TMO)
 370                                 lpfc_mbox_timeout_handler(phba);
 371                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 372                                 lpfc_unblock_fabric_iocbs(phba);
 373                         if (work_port_events & WORKER_FDMI_TMO)
 374                                 lpfc_fdmi_timeout_handler(vport);
 375                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 376                                 lpfc_ramp_down_queue_handler(phba);
 377                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 378                                 lpfc_ramp_up_queue_handler(phba);
 379                         spin_lock_irq(&vport->work_port_lock);
 380                         vport->work_port_events &= ~work_port_events;
 381                         spin_unlock_irq(&vport->work_port_lock);
 382                 }
 383         lpfc_destroy_vport_work_array(vports);
 384
 385         pring = &phba->sli.ring[LPFC_ELS_RING];
 386         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 387         status >>= (4*LPFC_ELS_RING);
 388         if ((status & HA_RXMASK)
 389                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 390                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 391                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 392                 } else {
 393                         lpfc_sli_handle_slow_ring_event(phba, pring,
 394                                                         (status &
 395                                                          HA_RXMASK));
 396                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 397                 }
 398                 /*
 399                  * Turn on Ring interrupts
 400                  */
 401                 spin_lock_irq(&phba->hbalock);
 402                 control = readl(phba->HCregaddr);
 403                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 404                         lpfc_debugfs_slow_ring_trc(phba,
 405                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 406                                 control, ha_copy, 0);
 407
 408                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 409                         writel(control, phba->HCregaddr);
 410                         readl(phba->HCregaddr); /* flush */
 411                 }
 412                 else {
 413                         lpfc_debugfs_slow_ring_trc(phba,
 414                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 415                                 control, ha_copy, 0);
 416                 }
 417                 spin_unlock_irq(&phba->hbalock);
 418         }
 419         lpfc_work_list_done(phba);
 420 }
 421
 422 static int
 423 check_work_wait_done(struct lpfc_hba *phba)
 424 {
 425         struct lpfc_vport *vport;
 426         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 427         int rc = 0;
 428
 429         spin_lock_irq(&phba->hbalock);
 430         list_for_each_entry(vport, &phba->port_list, listentry) {
 431                 if (vport->work_port_events) {
 432                         rc = 1;
 433                         break;
 434                 }
 435         }
 436         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 437             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 438                 rc = 1;
 439                 phba->work_found++;
 440         } else
 441                 phba->work_found = 0;
 442         spin_unlock_irq(&phba->hbalock);
 443         return rc;
 444 }
 445
 446
 447 int
 448 lpfc_do_work(void *p)
 449 {
 450         struct lpfc_hba *phba = p;
 451         int rc;
 452         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 453
 454         set_user_nice(current, -20);
 455         phba->work_wait = &work_waitq;
 456         phba->work_found = 0;
 457
 458         while (1) {
 459
 460                 rc = wait_event_interruptible(work_waitq,
 461                                               check_work_wait_done(phba));
 462
 463                 BUG_ON(rc);
 464
 465                 if (kthread_should_stop())
 466                         break;
 467
 468                 lpfc_work_done(phba);
 469
 470                 /* If there is alot of slow ring work, like during link up
 471                  * check_work_wait_done() may cause this thread to not give
 472                  * up the CPU for very long periods of time. This may cause
 473                  * soft lockups or other problems. To avoid these situations
 474                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 475                  * consecutive iterations.
 476                  */
 477                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 478                         phba->work_found = 0;
 479                         schedule();
 480                 }
 481         }
 482         phba->work_wait = NULL;
 483         return 0;
 484 }
 485
 486 /*
 487  * This is only called to handle FC worker events. Since this a rare
 488  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 489  * embedding it in the IOCB.
 490  */
 491 int
 492 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 493                       uint32_t evt)
 494 {
 495         struct lpfc_work_evt  *evtp;
 496         unsigned long flags;
 497
 498         /*
 499          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 500          * be queued to worker thread for processing
 501          */
 502         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 503         if (!evtp)
 504                 return 0;
 505
 506         evtp->evt_arg1  = arg1;
 507         evtp->evt_arg2  = arg2;
 508         evtp->evt       = evt;
 509
 510         spin_lock_irqsave(&phba->hbalock, flags);
 511         list_add_tail(&evtp->evt_listp, &phba->work_list);
 512         if (phba->work_wait)
 513                 lpfc_worker_wake_up(phba);
 514         spin_unlock_irqrestore(&phba->hbalock, flags);
 515
 516         return 1;
 517 }
 518
 519 void
 520 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 521 {
 522         struct lpfc_hba  *phba = vport->phba;
 523         struct lpfc_nodelist *ndlp, *next_ndlp;
 524         int  rc;
 525
 526         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 527                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 528                         continue;
 529
 530                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 531                         ((vport->port_type == LPFC_NPIV_PORT) &&
 532                         (ndlp->nlp_DID == NameServer_DID)))
 533                         lpfc_unreg_rpi(vport, ndlp);
 534
 535                 /* Leave Fabric nodes alone on link down */
 536                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 537                         continue;
 538                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 539                                              remove
 540                                              ? NLP_EVT_DEVICE_RM
 541                                              : NLP_EVT_DEVICE_RECOVERY);
 542         }
 543         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 544                 lpfc_mbx_unreg_vpi(vport);
 545                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 546         }
 547 }
 548
 549 static void
 550 lpfc_port_link_failure(struct lpfc_vport *vport)
 551 {
 552         struct lpfc_nodelist *ndlp, *next_ndlp;
 553
 554         /* Cleanup any outstanding RSCN activity */
 555         lpfc_els_flush_rscn(vport);
 556
 557         /* Cleanup any outstanding ELS commands */
 558         lpfc_els_flush_cmd(vport);
 559
 560         lpfc_cleanup_rpis(vport, 0);
 561
 562         /* free any ndlp's on unused list */
 563         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
 564                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 565                         lpfc_drop_node(vport, ndlp);
 566
 567         /* Turn off discovery timer if its running */
 568         lpfc_can_disctmo(vport);
 569 }
 570
 571 static void
 572 lpfc_linkdown_port(struct lpfc_vport *vport)
 573 {
 574         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 575
 576         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 577
 578         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 579                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 580                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 581
 582         lpfc_port_link_failure(vport);
 583
 584 }
 585
 586 int
 587 lpfc_linkdown(struct lpfc_hba *phba)
 588 {
 589         struct lpfc_vport *vport = phba->pport;
 590         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 591         struct lpfc_vport **vports;
 592         LPFC_MBOXQ_t          *mb;
 593         int i;
 594
 595         if (phba->link_state == LPFC_LINK_DOWN) {
 596                 return 0;
 597         }
 598         spin_lock_irq(&phba->hbalock);
 599         if (phba->link_state > LPFC_LINK_DOWN) {
 600                 phba->link_state = LPFC_LINK_DOWN;
 601                 phba->pport->fc_flag &= ~FC_LBIT;
 602         }
 603         spin_unlock_irq(&phba->hbalock);
 604         vports = lpfc_create_vport_work_array(phba);
 605         if (vports != NULL)
 606                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 607                         /* Issue a LINK DOWN event to all nodes */
 608                         lpfc_linkdown_port(vports[i]);
 609                 }
 610         lpfc_destroy_vport_work_array(vports);
 611         /* Clean up any firmware default rpi's */
 612         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 613         if (mb) {
 614                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 615                 mb->vport = vport;
 616                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 617                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 618                     == MBX_NOT_FINISHED) {
 619                         mempool_free(mb, phba->mbox_mem_pool);
 620                 }
 621         }
 622
 623         /* Setup myDID for link up if we are in pt2pt mode */
 624         if (phba->pport->fc_flag & FC_PT2PT) {
 625                 phba->pport->fc_myDID = 0;
 626                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 627                 if (mb) {
 628                         lpfc_config_link(phba, mb);
 629                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 630                         mb->vport = vport;
 631                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 632                             == MBX_NOT_FINISHED) {
 633                                 mempool_free(mb, phba->mbox_mem_pool);
 634                         }
 635                 }
 636                 spin_lock_irq(shost->host_lock);
 637                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 638                 spin_unlock_irq(shost->host_lock);
 639         }
 640
 641         return 0;
 642 }
 643
 644 static void
 645 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 646 {
 647         struct lpfc_nodelist *ndlp;
 648
 649         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 650                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 651                         continue;
 652
 653                 if (ndlp->nlp_type & NLP_FABRIC) {
 654                                 /* On Linkup its safe to clean up the ndlp
 655                                  * from Fabric connections.
 656                                  */
 657                         if (ndlp->nlp_DID != Fabric_DID)
 658                                 lpfc_unreg_rpi(vport, ndlp);
 659                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 660                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 661                                 /* Fail outstanding IO now since device is
 662                                  * marked for PLOGI.
 663                                  */
 664                         lpfc_unreg_rpi(vport, ndlp);
 665                 }
 666         }
 667 }
 668
 669 static void
 670 lpfc_linkup_port(struct lpfc_vport *vport)
 671 {
 672         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 673         struct lpfc_nodelist *ndlp, *next_ndlp;
 674         struct lpfc_hba  *phba = vport->phba;
 675
 676         if ((vport->load_flag & FC_UNLOADING) != 0)
 677                 return;
 678
 679         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 680                 "Link Up:         top:x%x speed:x%x flg:x%x",
 681                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 682
 683         /* If NPIV is not enabled, only bring the physical port up */
 684         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 685                 (vport != phba->pport))
 686                 return;
 687
 688         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 689
 690         spin_lock_irq(shost->host_lock);
 691         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 692                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 693         vport->fc_flag |= FC_NDISC_ACTIVE;
 694         vport->fc_ns_retry = 0;
 695         spin_unlock_irq(shost->host_lock);
 696
 697         if (vport->fc_flag & FC_LBIT)
 698                 lpfc_linkup_cleanup_nodes(vport);
 699
 700                                 /* free any ndlp's in unused state */
 701         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
 702                                  nlp_listp)
 703                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 704                         lpfc_drop_node(vport, ndlp);
 705 }
 706
 707 static int
 708 lpfc_linkup(struct lpfc_hba *phba)
 709 {
 710         struct lpfc_vport **vports;
 711         int i;
 712
 713         phba->link_state = LPFC_LINK_UP;
 714
 715         /* Unblock fabric iocbs if they are blocked */
 716         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 717         del_timer_sync(&phba->fabric_block_timer);
 718
 719         vports = lpfc_create_vport_work_array(phba);
 720         if (vports != NULL)
 721                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
 722                         lpfc_linkup_port(vports[i]);
 723         lpfc_destroy_vport_work_array(vports);
 724         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 725                 lpfc_issue_clear_la(phba, phba->pport);
 726
 727         return 0;
 728 }
 729
 730 /*
 731  * This routine handles processing a CLEAR_LA mailbox
 732  * command upon completion. It is setup in the LPFC_MBOXQ
 733  * as the completion routine when the command is
 734  * handed off to the SLI layer.
 735  */
 736 void
 737 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 738 {
 739         struct lpfc_vport *vport = pmb->vport;
 740         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 741         struct lpfc_sli   *psli = &phba->sli;
 742         MAILBOX_t *mb = &pmb->mb;
 743         uint32_t control;
 744
 745         /* Since we don't do discovery right now, turn these off here */
 746         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 747         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 748         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 749
 750         /* Check for error */
 751         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 752                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 753                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 754                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 755                                  "state x%x\n",
 756                                  mb->mbxStatus, vport->port_state);
 757                 phba->link_state = LPFC_HBA_ERROR;
 758                 goto out;
 759         }
 760
 761         if (vport->port_type == LPFC_PHYSICAL_PORT)
 762                 phba->link_state = LPFC_HBA_READY;
 763
 764         spin_lock_irq(&phba->hbalock);
 765         psli->sli_flag |= LPFC_PROCESS_LA;
 766         control = readl(phba->HCregaddr);
 767         control |= HC_LAINT_ENA;
 768         writel(control, phba->HCregaddr);
 769         readl(phba->HCregaddr); /* flush */
 770         spin_unlock_irq(&phba->hbalock);
 771         return;
 772
 773         vport->num_disc_nodes = 0;
 774         /* go thru NPR nodes and issue ELS PLOGIs */
 775         if (vport->fc_npr_cnt)
 776                 lpfc_els_disc_plogi(vport);
 777
 778         if (!vport->num_disc_nodes) {
 779                 spin_lock_irq(shost->host_lock);
 780                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 781                 spin_unlock_irq(shost->host_lock);
 782         }
 783
 784         vport->port_state = LPFC_VPORT_READY;
 785
 786 out:
 787         /* Device Discovery completes */
 788         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 789                          "0225 Device Discovery completes\n");
 790         mempool_free(pmb, phba->mbox_mem_pool);
 791
 792         spin_lock_irq(shost->host_lock);
 793         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 794         spin_unlock_irq(shost->host_lock);
 795
 796         del_timer_sync(&phba->fc_estabtmo);
 797
 798         lpfc_can_disctmo(vport);
 799
 800         /* turn on Link Attention interrupts */
 801
 802         spin_lock_irq(&phba->hbalock);
 803         psli->sli_flag |= LPFC_PROCESS_LA;
 804         control = readl(phba->HCregaddr);
 805         control |= HC_LAINT_ENA;
 806         writel(control, phba->HCregaddr);
 807         readl(phba->HCregaddr); /* flush */
 808         spin_unlock_irq(&phba->hbalock);
 809
 810         return;
 811 }
 812
 813
 814 static void
 815 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 816 {
 817         struct lpfc_vport *vport = pmb->vport;
 818
 819         if (pmb->mb.mbxStatus)
 820                 goto out;
 821
 822         mempool_free(pmb, phba->mbox_mem_pool);
 823
 824         if (phba->fc_topology == TOPOLOGY_LOOP &&
 825             vport->fc_flag & FC_PUBLIC_LOOP &&
 826             !(vport->fc_flag & FC_LBIT)) {
 827                         /* Need to wait for FAN - use discovery timer
 828                          * for timeout.  port_state is identically
 829                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 830                          */
 831                         lpfc_set_disctmo(vport);
 832                         return;
 833         }
 834
 835         /* Start discovery by sending a FLOGI. port_state is identically
 836          * LPFC_FLOGI while waiting for FLOGI cmpl
 837          */
 838         if (vport->port_state != LPFC_FLOGI) {
 839                 lpfc_initial_flogi(vport);
 840         }
 841         return;
 842
 843 out:
 844         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 845                          "0306 CONFIG_LINK mbxStatus error x%x "
 846                          "HBA state x%x\n",
 847                          pmb->mb.mbxStatus, vport->port_state);
 848         mempool_free(pmb, phba->mbox_mem_pool);
 849
 850         lpfc_linkdown(phba);
 851
 852         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 853                          "0200 CONFIG_LINK bad hba state x%x\n",
 854                          vport->port_state);
 855
 856         lpfc_issue_clear_la(phba, vport);
 857         return;
 858 }
 859
 860 static void
 861 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 862 {
 863         MAILBOX_t *mb = &pmb->mb;
 864         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 865         struct lpfc_vport  *vport = pmb->vport;
 866
 867
 868         /* Check for error */
 869         if (mb->mbxStatus) {
 870                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 871                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 872                                  "0319 READ_SPARAM mbxStatus error x%x "
 873                                  "hba state x%x>\n",
 874                                  mb->mbxStatus, vport->port_state);
 875                 lpfc_linkdown(phba);
 876                 goto out;
 877         }
 878
 879         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 880                sizeof (struct serv_parm));
 881         if (phba->cfg_soft_wwnn)
 882                 u64_to_wwn(phba->cfg_soft_wwnn,
 883                            vport->fc_sparam.nodeName.u.wwn);
 884         if (phba->cfg_soft_wwpn)
 885                 u64_to_wwn(phba->cfg_soft_wwpn,
 886                            vport->fc_sparam.portName.u.wwn);
 887         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 888                sizeof(vport->fc_nodename));
 889         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 890                sizeof(vport->fc_portname));
 891         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 892                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 893                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 894         }
 895
 896         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 897         kfree(mp);
 898         mempool_free(pmb, phba->mbox_mem_pool);
 899         return;
 900
 901 out:
 902         pmb->context1 = NULL;
 903         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 904         kfree(mp);
 905         lpfc_issue_clear_la(phba, vport);
 906         mempool_free(pmb, phba->mbox_mem_pool);
 907         return;
 908 }
 909
 910 static void
 911 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 912 {
 913         struct lpfc_vport *vport = phba->pport;
 914         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 915         int i;
 916         struct lpfc_dmabuf *mp;
 917         int rc;
 918
 919         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 920         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 921
 922         spin_lock_irq(&phba->hbalock);
 923         switch (la->UlnkSpeed) {
 924         case LA_1GHZ_LINK:
 925                 phba->fc_linkspeed = LA_1GHZ_LINK;
 926                 break;
 927         case LA_2GHZ_LINK:
 928                 phba->fc_linkspeed = LA_2GHZ_LINK;
 929                 break;
 930         case LA_4GHZ_LINK:
 931                 phba->fc_linkspeed = LA_4GHZ_LINK;
 932                 break;
 933         case LA_8GHZ_LINK:
 934                 phba->fc_linkspeed = LA_8GHZ_LINK;
 935                 break;
 936         default:
 937                 phba->fc_linkspeed = LA_UNKNW_LINK;
 938                 break;
 939         }
 940
 941         phba->fc_topology = la->topology;
 942         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 943
 944         if (phba->fc_topology == TOPOLOGY_LOOP) {
 945                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 946
 947                                 /* Get Loop Map information */
 948                 if (la->il)
 949                         vport->fc_flag |= FC_LBIT;
 950
 951                 vport->fc_myDID = la->granted_AL_PA;
 952                 i = la->un.lilpBde64.tus.f.bdeSize;
 953
 954                 if (i == 0) {
 955                         phba->alpa_map[0] = 0;
 956                 } else {
 957                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 958                                 int numalpa, j, k;
 959                                 union {
 960                                         uint8_t pamap[16];
 961                                         struct {
 962                                                 uint32_t wd1;
 963                                                 uint32_t wd2;
 964                                                 uint32_t wd3;
 965                                                 uint32_t wd4;
 966                                         } pa;
 967                                 } un;
 968                                 numalpa = phba->alpa_map[0];
 969                                 j = 0;
 970                                 while (j < numalpa) {
 971                                         memset(un.pamap, 0, 16);
 972                                         for (k = 1; j < numalpa; k++) {
 973                                                 un.pamap[k - 1] =
 974                                                         phba->alpa_map[j + 1];
 975                                                 j++;
 976                                                 if (k == 16)
 977                                                         break;
 978                                         }
 979                                         /* Link Up Event ALPA map */
 980                                         lpfc_printf_log(phba,
 981                                                         KERN_WARNING,
 982                                                         LOG_LINK_EVENT,
 983                                                         "1304 Link Up Event "
 984                                                         "ALPA map Data: x%x "
 985                                                         "x%x x%x x%x\n",
 986                                                         un.pa.wd1, un.pa.wd2,
 987                                                         un.pa.wd3, un.pa.wd4);
 988                                 }
 989                         }
 990                 }
 991         } else {
 992                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
 993                         if (phba->max_vpi && phba->cfg_enable_npiv &&
 994                            (phba->sli_rev == 3))
 995                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
 996                 }
 997                 vport->fc_myDID = phba->fc_pref_DID;
 998                 vport->fc_flag |= FC_LBIT;
 999         }
1000         spin_unlock_irq(&phba->hbalock);
1001
1002         lpfc_linkup(phba);
1003         if (sparam_mbox) {
1004                 lpfc_read_sparam(phba, sparam_mbox, 0);
1005                 sparam_mbox->vport = vport;
1006                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1007                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1008                 if (rc == MBX_NOT_FINISHED) {
1009                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1010                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1011                         kfree(mp);
1012                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1013                         if (cfglink_mbox)
1014                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1015                         goto out;
1016                 }
1017         }
1018
1019         if (cfglink_mbox) {
1020                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1021                 lpfc_config_link(phba, cfglink_mbox);
1022                 cfglink_mbox->vport = vport;
1023                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1024                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1025                 if (rc != MBX_NOT_FINISHED)
1026                         return;
1027                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1028         }
1029 out:
1030         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1031         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1032                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1033                          vport->port_state, sparam_mbox, cfglink_mbox);
1034         lpfc_issue_clear_la(phba, vport);
1035         return;
1036 }
1037
1038 static void
1039 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1040 {
1041         uint32_t control;
1042         struct lpfc_sli *psli = &phba->sli;
1043
1044         lpfc_linkdown(phba);
1045
1046         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1047         spin_lock_irq(&phba->hbalock);
1048         psli->sli_flag |= LPFC_PROCESS_LA;
1049         control = readl(phba->HCregaddr);
1050         control |= HC_LAINT_ENA;
1051         writel(control, phba->HCregaddr);
1052         readl(phba->HCregaddr); /* flush */
1053         spin_unlock_irq(&phba->hbalock);
1054 }
1055
1056 /*
1057  * This routine handles processing a READ_LA mailbox
1058  * command upon completion. It is setup in the LPFC_MBOXQ
1059  * as the completion routine when the command is
1060  * handed off to the SLI layer.
1061  */
1062 void
1063 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1064 {
1065         struct lpfc_vport *vport = pmb->vport;
1066         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1067         READ_LA_VAR *la;
1068         MAILBOX_t *mb = &pmb->mb;
1069         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1070
1071         /* Check for error */
1072         if (mb->mbxStatus) {
1073                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1074                                 "1307 READ_LA mbox error x%x state x%x\n",
1075                                 mb->mbxStatus, vport->port_state);
1076                 lpfc_mbx_issue_link_down(phba);
1077                 phba->link_state = LPFC_HBA_ERROR;
1078                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1079         }
1080
1081         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1082
1083         memcpy(&phba->alpa_map[0], mp->virt, 128);
1084
1085         spin_lock_irq(shost->host_lock);
1086         if (la->pb)
1087                 vport->fc_flag |= FC_BYPASSED_MODE;
1088         else
1089                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1090         spin_unlock_irq(shost->host_lock);
1091
1092         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1093             (phba->fc_eventTag == la->eventTag)) {
1094                 phba->fc_stat.LinkMultiEvent++;
1095                 if (la->attType == AT_LINK_UP)
1096                         if (phba->fc_eventTag != 0)
1097                                 lpfc_linkdown(phba);
1098         }
1099
1100         phba->fc_eventTag = la->eventTag;
1101
1102         if (la->attType == AT_LINK_UP) {
1103                 phba->fc_stat.LinkUp++;
1104                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1105                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1106                                         "1306 Link Up Event in loop back mode "
1107                                         "x%x received Data: x%x x%x x%x x%x\n",
1108                                         la->eventTag, phba->fc_eventTag,
1109                                         la->granted_AL_PA, la->UlnkSpeed,
1110                                         phba->alpa_map[0]);
1111                 } else {
1112                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1113                                         "1303 Link Up Event x%x received "
1114                                         "Data: x%x x%x x%x x%x\n",
1115                                         la->eventTag, phba->fc_eventTag,
1116                                         la->granted_AL_PA, la->UlnkSpeed,
1117                                         phba->alpa_map[0]);
1118                 }
1119                 lpfc_mbx_process_link_up(phba, la);
1120         } else {
1121                 phba->fc_stat.LinkDown++;
1122                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1123                                 "1305 Link Down Event x%x received "
1124                                 "Data: x%x x%x x%x\n",
1125                                 la->eventTag, phba->fc_eventTag,
1126                                 phba->pport->port_state, vport->fc_flag);
1127                 lpfc_mbx_issue_link_down(phba);
1128         }
1129
1130 lpfc_mbx_cmpl_read_la_free_mbuf:
1131         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1132         kfree(mp);
1133         mempool_free(pmb, phba->mbox_mem_pool);
1134         return;
1135 }
1136
1137 /*
1138  * This routine handles processing a REG_LOGIN mailbox
1139  * command upon completion. It is setup in the LPFC_MBOXQ
1140  * as the completion routine when the command is
1141  * handed off to the SLI layer.
1142  */
1143 void
1144 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1145 {
1146         struct lpfc_vport  *vport = pmb->vport;
1147         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1148         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1149
1150         pmb->context1 = NULL;
1151
1152         /* Good status, call state machine */
1153         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1154         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1155         kfree(mp);
1156         mempool_free(pmb, phba->mbox_mem_pool);
1157         lpfc_nlp_put(ndlp);
1158
1159         return;
1160 }
1161
1162 static void
1163 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1164 {
1165         MAILBOX_t *mb = &pmb->mb;
1166         struct lpfc_vport *vport = pmb->vport;
1167         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1168
1169         switch (mb->mbxStatus) {
1170         case 0x0011:
1171         case 0x0020:
1172         case 0x9700:
1173                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1174                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1175                                  mb->mbxStatus);
1176                 break;
1177         }
1178         vport->unreg_vpi_cmpl = VPORT_OK;
1179         mempool_free(pmb, phba->mbox_mem_pool);
1180         /*
1181          * This shost reference might have been taken at the beginning of
1182          * lpfc_vport_delete()
1183          */
1184         if (vport->load_flag & FC_UNLOADING)
1185                 scsi_host_put(shost);
1186 }
1187
1188 void
1189 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1190 {
1191         struct lpfc_hba  *phba = vport->phba;
1192         LPFC_MBOXQ_t *mbox;
1193         int rc;
1194
1195         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1196         if (!mbox)
1197                 return;
1198
1199         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1200         mbox->vport = vport;
1201         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1202         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1203         if (rc == MBX_NOT_FINISHED) {
1204                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1205                                  "1800 Could not issue unreg_vpi\n");
1206                 mempool_free(mbox, phba->mbox_mem_pool);
1207                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1208         }
1209 }
1210
1211 static void
1212 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1213 {
1214         struct lpfc_vport *vport = pmb->vport;
1215         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1216         MAILBOX_t *mb = &pmb->mb;
1217
1218         switch (mb->mbxStatus) {
1219         case 0x0011:
1220         case 0x9601:
1221         case 0x9602:
1222                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1223                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1224                                  mb->mbxStatus);
1225                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1226                 spin_lock_irq(shost->host_lock);
1227                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1228                 spin_unlock_irq(shost->host_lock);
1229                 vport->fc_myDID = 0;
1230                 goto out;
1231         }
1232
1233         vport->num_disc_nodes = 0;
1234         /* go thru NPR list and issue ELS PLOGIs */
1235         if (vport->fc_npr_cnt)
1236                 lpfc_els_disc_plogi(vport);
1237
1238         if (!vport->num_disc_nodes) {
1239                 spin_lock_irq(shost->host_lock);
1240                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1241                 spin_unlock_irq(shost->host_lock);
1242                 lpfc_can_disctmo(vport);
1243         }
1244         vport->port_state = LPFC_VPORT_READY;
1245
1246 out:
1247         mempool_free(pmb, phba->mbox_mem_pool);
1248         return;
1249 }
1250
1251 /*
1252  * This routine handles processing a Fabric REG_LOGIN mailbox
1253  * command upon completion. It is setup in the LPFC_MBOXQ
1254  * as the completion routine when the command is
1255  * handed off to the SLI layer.
1256  */
1257 void
1258 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1259 {
1260         struct lpfc_vport *vport = pmb->vport;
1261         MAILBOX_t *mb = &pmb->mb;
1262         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1263         struct lpfc_nodelist *ndlp;
1264         struct lpfc_vport **vports;
1265         int i;
1266
1267         ndlp = (struct lpfc_nodelist *) pmb->context2;
1268         pmb->context1 = NULL;
1269         pmb->context2 = NULL;
1270         if (mb->mbxStatus) {
1271                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1272                 kfree(mp);
1273                 mempool_free(pmb, phba->mbox_mem_pool);
1274                 lpfc_nlp_put(ndlp);
1275
1276                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1277                         /* FLOGI failed, use loop map to make discovery list */
1278                         lpfc_disc_list_loopmap(vport);
1279
1280                         /* Start discovery */
1281                         lpfc_disc_start(vport);
1282                         return;
1283                 }
1284
1285                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1286                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1287                                  "0258 Register Fabric login error: 0x%x\n",
1288                                  mb->mbxStatus);
1289                 return;
1290         }
1291
1292         ndlp->nlp_rpi = mb->un.varWords[0];
1293         ndlp->nlp_type |= NLP_FABRIC;
1294         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1295
1296         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1297
1298         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1299                 vports = lpfc_create_vport_work_array(phba);
1300                 if (vports != NULL)
1301                         for(i = 0;
1302                             i < LPFC_MAX_VPORTS && vports[i] != NULL;
1303                             i++) {
1304                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1305                                         continue;
1306                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1307                                         lpfc_initial_fdisc(vports[i]);
1308                                 else if (phba->sli3_options &
1309                                                 LPFC_SLI3_NPIV_ENABLED) {
1310                                         lpfc_vport_set_state(vports[i],
1311                                                 FC_VPORT_NO_FABRIC_SUPP);
1312                                         lpfc_printf_vlog(vport, KERN_ERR,
1313                                                          LOG_ELS,
1314                                                         "0259 No NPIV "
1315                                                         "Fabric support\n");
1316                                 }
1317                         }
1318                 lpfc_destroy_vport_work_array(vports);
1319                 lpfc_do_scr_ns_plogi(phba, vport);
1320         }
1321
1322         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1323         kfree(mp);
1324         mempool_free(pmb, phba->mbox_mem_pool);
1325         return;
1326 }
1327
1328 /*
1329  * This routine handles processing a NameServer REG_LOGIN mailbox
1330  * command upon completion. It is setup in the LPFC_MBOXQ
1331  * as the completion routine when the command is
1332  * handed off to the SLI layer.
1333  */
1334 void
1335 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1336 {
1337         MAILBOX_t *mb = &pmb->mb;
1338         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1339         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1340         struct lpfc_vport *vport = pmb->vport;
1341
1342         if (mb->mbxStatus) {
1343 out:
1344                 lpfc_nlp_put(ndlp);
1345                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1346                 kfree(mp);
1347                 mempool_free(pmb, phba->mbox_mem_pool);
1348                 lpfc_drop_node(vport, ndlp);
1349
1350                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1351                         /*
1352                          * RegLogin failed, use loop map to make discovery
1353                          * list
1354                          */
1355                         lpfc_disc_list_loopmap(vport);
1356
1357                         /* Start discovery */
1358                         lpfc_disc_start(vport);
1359                         return;
1360                 }
1361                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1362                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1363                                  "0260 Register NameServer error: 0x%x\n",
1364                                  mb->mbxStatus);
1365                 return;
1366         }
1367
1368         pmb->context1 = NULL;
1369
1370         ndlp->nlp_rpi = mb->un.varWords[0];
1371         ndlp->nlp_type |= NLP_FABRIC;
1372         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1373
1374         if (vport->port_state < LPFC_VPORT_READY) {
1375                 /* Link up discovery requires Fabric registration. */
1376                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1377                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1378                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1379                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1380                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1381
1382                 /* Issue SCR just before NameServer GID_FT Query */
1383                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1384         }
1385
1386         vport->fc_ns_retry = 0;
1387         /* Good status, issue CT Request to NameServer */
1388         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1389                 /* Cannot issue NameServer Query, so finish up discovery */
1390                 goto out;
1391         }
1392
1393         lpfc_nlp_put(ndlp);
1394         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1395         kfree(mp);
1396         mempool_free(pmb, phba->mbox_mem_pool);
1397
1398         return;
1399 }
1400
1401 static void
1402 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1403 {
1404         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1405         struct fc_rport  *rport;
1406         struct lpfc_rport_data *rdata;
1407         struct fc_rport_identifiers rport_ids;
1408         struct lpfc_hba  *phba = vport->phba;
1409
1410         /* Remote port has reappeared. Re-register w/ FC transport */
1411         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1412         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1413         rport_ids.port_id = ndlp->nlp_DID;
1414         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1415
1416         /*
1417          * We leave our node pointer in rport->dd_data when we unregister a
1418          * FCP target port.  But fc_remote_port_add zeros the space to which
1419          * rport->dd_data points.  So, if we're reusing a previously
1420          * registered port, drop the reference that we took the last time we
1421          * registered the port.
1422          */
1423         if (ndlp->rport && ndlp->rport->dd_data &&
1424             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1425                 lpfc_nlp_put(ndlp);
1426         }
1427
1428         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1429                 "rport add:       did:x%x flg:x%x type x%x",
1430                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1431
1432         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1433         if (!rport || !get_device(&rport->dev)) {
1434                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1435                            "Warning: fc_remote_port_add failed\n");
1436                 return;
1437         }
1438
1439         /* initialize static port data */
1440         rport->maxframe_size = ndlp->nlp_maxframe;
1441         rport->supported_classes = ndlp->nlp_class_sup;
1442         rdata = rport->dd_data;
1443         rdata->pnode = lpfc_nlp_get(ndlp);
1444
1445         if (ndlp->nlp_type & NLP_FCP_TARGET)
1446                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1447         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1448                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1449
1450
1451         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1452                 fc_remote_port_rolechg(rport, rport_ids.roles);
1453
1454         if ((rport->scsi_target_id != -1) &&
1455             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1456                 ndlp->nlp_sid = rport->scsi_target_id;
1457         }
1458         return;
1459 }
1460
1461 static void
1462 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1463 {
1464         struct fc_rport *rport = ndlp->rport;
1465
1466         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1467                 "rport delete:    did:x%x flg:x%x type x%x",
1468                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1469
1470         fc_remote_port_delete(rport);
1471
1472         return;
1473 }
1474
1475 static void
1476 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1477 {
1478         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1479
1480         spin_lock_irq(shost->host_lock);
1481         switch (state) {
1482         case NLP_STE_UNUSED_NODE:
1483                 vport->fc_unused_cnt += count;
1484                 break;
1485         case NLP_STE_PLOGI_ISSUE:
1486                 vport->fc_plogi_cnt += count;
1487                 break;
1488         case NLP_STE_ADISC_ISSUE:
1489                 vport->fc_adisc_cnt += count;
1490                 break;
1491         case NLP_STE_REG_LOGIN_ISSUE:
1492                 vport->fc_reglogin_cnt += count;
1493                 break;
1494         case NLP_STE_PRLI_ISSUE:
1495                 vport->fc_prli_cnt += count;
1496                 break;
1497         case NLP_STE_UNMAPPED_NODE:
1498                 vport->fc_unmap_cnt += count;
1499                 break;
1500         case NLP_STE_MAPPED_NODE:
1501                 vport->fc_map_cnt += count;
1502                 break;
1503         case NLP_STE_NPR_NODE:
1504                 vport->fc_npr_cnt += count;
1505                 break;
1506         }
1507         spin_unlock_irq(shost->host_lock);
1508 }
1509
1510 static void
1511 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1512                        int old_state, int new_state)
1513 {
1514         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1515
1516         if (new_state == NLP_STE_UNMAPPED_NODE) {
1517                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1518                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1519                 ndlp->nlp_type |= NLP_FC_NODE;
1520         }
1521         if (new_state == NLP_STE_MAPPED_NODE)
1522                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1523         if (new_state == NLP_STE_NPR_NODE)
1524                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1525
1526         /* Transport interface */
1527         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1528                             old_state == NLP_STE_UNMAPPED_NODE)) {
1529                 vport->phba->nport_event_cnt++;
1530                 lpfc_unregister_remote_port(ndlp);
1531         }
1532
1533         if (new_state ==  NLP_STE_MAPPED_NODE ||
1534             new_state == NLP_STE_UNMAPPED_NODE) {
1535                 vport->phba->nport_event_cnt++;
1536                 /*
1537                  * Tell the fc transport about the port, if we haven't
1538                  * already. If we have, and it's a scsi entity, be
1539                  * sure to unblock any attached scsi devices
1540                  */
1541                 lpfc_register_remote_port(vport, ndlp);
1542         }
1543         /*
1544          * if we added to Mapped list, but the remote port
1545          * registration failed or assigned a target id outside
1546          * our presentable range - move the node to the
1547          * Unmapped List
1548          */
1549         if (new_state == NLP_STE_MAPPED_NODE &&
1550             (!ndlp->rport ||
1551              ndlp->rport->scsi_target_id == -1 ||
1552              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1553                 spin_lock_irq(shost->host_lock);
1554                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1555                 spin_unlock_irq(shost->host_lock);
1556                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1557         }
1558 }
1559
1560 static char *
1561 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1562 {
1563         static char *states[] = {
1564                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1565                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1566                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1567                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1568                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1569                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1570                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1571                 [NLP_STE_NPR_NODE] = "NPR",
1572         };
1573
1574         if (state < NLP_STE_MAX_STATE && states[state])
1575                 strlcpy(buffer, states[state], size);
1576         else
1577                 snprintf(buffer, size, "unknown (%d)", state);
1578         return buffer;
1579 }
1580
1581 void
1582 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1583                    int state)
1584 {
1585         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1586         int  old_state = ndlp->nlp_state;
1587         char name1[16], name2[16];
1588
1589         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1590                          "0904 NPort state transition x%06x, %s -> %s\n",
1591                          ndlp->nlp_DID,
1592                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1593                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1594
1595         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1596                 "node statechg    did:x%x old:%d ste:%d",
1597                 ndlp->nlp_DID, old_state, state);
1598
1599         if (old_state == NLP_STE_NPR_NODE &&
1600             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1601             state != NLP_STE_NPR_NODE)
1602                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1603         if (old_state == NLP_STE_UNMAPPED_NODE) {
1604                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1605                 ndlp->nlp_type &= ~NLP_FC_NODE;
1606         }
1607
1608         if ((old_state == NLP_STE_UNUSED_NODE) &&
1609             (state != NLP_STE_UNUSED_NODE) &&
1610             (ndlp->nlp_flag & NLP_DELAYED_RM)) {
1611                 /* We are using the ndlp after all, so reverse
1612                  * the delayed removal of it.
1613                  */
1614                 ndlp->nlp_flag &= ~NLP_DELAYED_RM;
1615                 lpfc_nlp_get(ndlp);
1616         }
1617
1618         if (list_empty(&ndlp->nlp_listp)) {
1619                 spin_lock_irq(shost->host_lock);
1620                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1621                 spin_unlock_irq(shost->host_lock);
1622         } else if (old_state)
1623                 lpfc_nlp_counters(vport, old_state, -1);
1624
1625         ndlp->nlp_state = state;
1626         lpfc_nlp_counters(vport, state, 1);
1627         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1628 }
1629
1630 void
1631 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1632 {
1633         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1634
1635         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1636                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1637         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1638                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1639         spin_lock_irq(shost->host_lock);
1640         list_del_init(&ndlp->nlp_listp);
1641         spin_unlock_irq(shost->host_lock);
1642         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1643                                NLP_STE_UNUSED_NODE);
1644 }
1645
1646 void
1647 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1648 {
1649         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1650         if (!(ndlp->nlp_flag & NLP_DELAYED_RM))
1651                 lpfc_nlp_put(ndlp);
1652         return;
1653 }
1654
1655 /*
1656  * Start / ReStart rescue timer for Discovery / RSCN handling
1657  */
1658 void
1659 lpfc_set_disctmo(struct lpfc_vport *vport)
1660 {
1661         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1662         struct lpfc_hba  *phba = vport->phba;
1663         uint32_t tmo;
1664
1665         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1666                 /* For FAN, timeout should be greater then edtov */
1667                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1668         } else {
1669                 /* Normal discovery timeout should be > then ELS/CT timeout
1670                  * FC spec states we need 3 * ratov for CT requests
1671                  */
1672                 tmo = ((phba->fc_ratov * 3) + 3);
1673         }
1674
1675
1676         if (!timer_pending(&vport->fc_disctmo)) {
1677                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1678                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1679                         tmo, vport->port_state, vport->fc_flag);
1680         }
1681
1682         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1683         spin_lock_irq(shost->host_lock);
1684         vport->fc_flag |= FC_DISC_TMO;
1685         spin_unlock_irq(shost->host_lock);
1686
1687         /* Start Discovery Timer state <hba_state> */
1688         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1689                          "0247 Start Discovery Timer state x%x "
1690                          "Data: x%x x%lx x%x x%x\n",
1691                          vport->port_state, tmo,
1692                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1693                          vport->fc_adisc_cnt);
1694
1695         return;
1696 }
1697
1698 /*
1699  * Cancel rescue timer for Discovery / RSCN handling
1700  */
1701 int
1702 lpfc_can_disctmo(struct lpfc_vport *vport)
1703 {
1704         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1705         unsigned long iflags;
1706
1707         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1708                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1709                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1710
1711         /* Turn off discovery timer if its running */
1712         if (vport->fc_flag & FC_DISC_TMO) {
1713                 spin_lock_irqsave(shost->host_lock, iflags);
1714                 vport->fc_flag &= ~FC_DISC_TMO;
1715                 spin_unlock_irqrestore(shost->host_lock, iflags);
1716                 del_timer_sync(&vport->fc_disctmo);
1717                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1718                 vport->work_port_events &= ~WORKER_DISC_TMO;
1719                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1720         }
1721
1722         /* Cancel Discovery Timer state <hba_state> */
1723         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1724                          "0248 Cancel Discovery Timer state x%x "
1725                          "Data: x%x x%x x%x\n",
1726                          vport->port_state, vport->fc_flag,
1727                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1728         return 0;
1729 }
1730
1731 /*
1732  * Check specified ring for outstanding IOCB on the SLI queue
1733  * Return true if iocb matches the specified nport
1734  */
1735 int
1736 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1737                     struct lpfc_sli_ring *pring,
1738                     struct lpfc_iocbq *iocb,
1739                     struct lpfc_nodelist *ndlp)
1740 {
1741         struct lpfc_sli *psli = &phba->sli;
1742         IOCB_t *icmd = &iocb->iocb;
1743         struct lpfc_vport    *vport = ndlp->vport;
1744
1745         if (iocb->vport != vport)
1746                 return 0;
1747
1748         if (pring->ringno == LPFC_ELS_RING) {
1749                 switch (icmd->ulpCommand) {
1750                 case CMD_GEN_REQUEST64_CR:
1751                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1752                                 return 1;
1753                 case CMD_ELS_REQUEST64_CR:
1754                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1755                                 return 1;
1756                 case CMD_XMIT_ELS_RSP64_CX:
1757                         if (iocb->context1 == (uint8_t *) ndlp)
1758                                 return 1;
1759                 }
1760         } else if (pring->ringno == psli->extra_ring) {
1761
1762         } else if (pring->ringno == psli->fcp_ring) {
1763                 /* Skip match check if waiting to relogin to FCP target */
1764                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1765                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1766                         return 0;
1767                 }
1768                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1769                         return 1;
1770                 }
1771         } else if (pring->ringno == psli->next_ring) {
1772
1773         }
1774         return 0;
1775 }
1776
1777 /*
1778  * Free resources / clean up outstanding I/Os
1779  * associated with nlp_rpi in the LPFC_NODELIST entry.
1780  */
1781 static int
1782 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1783 {
1784         LIST_HEAD(completions);
1785         struct lpfc_sli *psli;
1786         struct lpfc_sli_ring *pring;
1787         struct lpfc_iocbq *iocb, *next_iocb;
1788         IOCB_t *icmd;
1789         uint32_t rpi, i;
1790
1791         lpfc_fabric_abort_nport(ndlp);
1792
1793         /*
1794          * Everything that matches on txcmplq will be returned
1795          * by firmware with a no rpi error.
1796          */
1797         psli = &phba->sli;
1798         rpi = ndlp->nlp_rpi;
1799         if (rpi) {
1800                 /* Now process each ring */
1801                 for (i = 0; i < psli->num_rings; i++) {
1802                         pring = &psli->ring[i];
1803
1804                         spin_lock_irq(&phba->hbalock);
1805                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1806                                                  list) {
1807                                 /*
1808                                  * Check to see if iocb matches the nport we are
1809                                  * looking for
1810                                  */
1811                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1812                                                          ndlp))) {
1813                                         /* It matches, so deque and call compl
1814                                            with an error */
1815                                         list_move_tail(&iocb->list,
1816                                                        &completions);
1817                                         pring->txq_cnt--;
1818                                 }
1819                         }
1820                         spin_unlock_irq(&phba->hbalock);
1821                 }
1822         }
1823
1824         while (!list_empty(&completions)) {
1825                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1826                 list_del_init(&iocb->list);
1827
1828                 if (!iocb->iocb_cmpl)
1829                         lpfc_sli_release_iocbq(phba, iocb);
1830                 else {
1831                         icmd = &iocb->iocb;
1832                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1833                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1834                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1835                 }
1836         }
1837
1838         return 0;
1839 }
1840
1841 /*
1842  * Free rpi associated with LPFC_NODELIST entry.
1843  * This routine is called from lpfc_freenode(), when we are removing
1844  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1845  * LOGO that completes successfully, and we are waiting to PLOGI back
1846  * to the remote NPort. In addition, it is called after we receive
1847  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1848  * we are waiting to PLOGI back to the remote NPort.
1849  */
1850 int
1851 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1852 {
1853         struct lpfc_hba *phba = vport->phba;
1854         LPFC_MBOXQ_t    *mbox;
1855         int rc;
1856
1857         if (ndlp->nlp_rpi) {
1858                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1859                 if (mbox) {
1860                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1861                         mbox->vport = vport;
1862                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1863                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1864                         if (rc == MBX_NOT_FINISHED)
1865                                 mempool_free(mbox, phba->mbox_mem_pool);
1866                 }
1867                 lpfc_no_rpi(phba, ndlp);
1868                 ndlp->nlp_rpi = 0;
1869                 return 1;
1870         }
1871         return 0;
1872 }
1873
1874 void
1875 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1876 {
1877         struct lpfc_hba  *phba  = vport->phba;
1878         LPFC_MBOXQ_t     *mbox;
1879         int rc;
1880
1881         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1882         if (mbox) {
1883                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1884                 mbox->vport = vport;
1885                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1886                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1887                 if (rc == MBX_NOT_FINISHED) {
1888                         mempool_free(mbox, phba->mbox_mem_pool);
1889                 }
1890         }
1891 }
1892
1893 void
1894 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1895 {
1896         struct lpfc_hba  *phba  = vport->phba;
1897         LPFC_MBOXQ_t     *mbox;
1898         int rc;
1899
1900         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1901         if (mbox) {
1902                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1903                 mbox->vport = vport;
1904                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1905                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1906                 if (rc == MBX_NOT_FINISHED) {
1907                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1908                                          "1815 Could not issue "
1909                                          "unreg_did (default rpis)\n");
1910                         mempool_free(mbox, phba->mbox_mem_pool);
1911                 }
1912         }
1913 }
1914
1915 /*
1916  * Free resources associated with LPFC_NODELIST entry
1917  * so it can be freed.
1918  */
1919 static int
1920 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1921 {
1922         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1923         struct lpfc_hba  *phba = vport->phba;
1924         LPFC_MBOXQ_t *mb, *nextmb;
1925         struct lpfc_dmabuf *mp;
1926
1927         /* Cleanup node for NPort <nlp_DID> */
1928         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1929                          "0900 Cleanup node for NPort x%x "
1930                          "Data: x%x x%x x%x\n",
1931                          ndlp->nlp_DID, ndlp->nlp_flag,
1932                          ndlp->nlp_state, ndlp->nlp_rpi);
1933         lpfc_dequeue_node(vport, ndlp);
1934
1935         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1936         if ((mb = phba->sli.mbox_active)) {
1937                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1938                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1939                         mb->context2 = NULL;
1940                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1941                 }
1942         }
1943
1944         spin_lock_irq(&phba->hbalock);
1945         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1946                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1947                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1948                         mp = (struct lpfc_dmabuf *) (mb->context1);
1949                         if (mp) {
1950                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1951                                 kfree(mp);
1952                         }
1953                         list_del(&mb->list);
1954                         mempool_free(mb, phba->mbox_mem_pool);
1955                         lpfc_nlp_put(ndlp);
1956                 }
1957         }
1958         spin_unlock_irq(&phba->hbalock);
1959
1960         lpfc_els_abort(phba,ndlp);
1961         spin_lock_irq(shost->host_lock);
1962         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1963         spin_unlock_irq(shost->host_lock);
1964
1965         ndlp->nlp_last_elscmd = 0;
1966         del_timer_sync(&ndlp->nlp_delayfunc);
1967
1968         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1969                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1970         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1971                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1972
1973         lpfc_unreg_rpi(vport, ndlp);
1974
1975         return 0;
1976 }
1977
1978 /*
1979  * Check to see if we can free the nlp back to the freelist.
1980  * If we are in the middle of using the nlp in the discovery state
1981  * machine, defer the free till we reach the end of the state machine.
1982  */
1983 static void
1984 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1985 {
1986         struct lpfc_rport_data *rdata;
1987
1988         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1989                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1990         }
1991
1992         lpfc_cleanup_node(vport, ndlp);
1993
1994         /*
1995          * We can get here with a non-NULL ndlp->rport because when we
1996          * unregister a rport we don't break the rport/node linkage.  So if we
1997          * do, make sure we don't leaving any dangling pointers behind.
1998          */
1999         if (ndlp->rport) {
2000                 rdata = ndlp->rport->dd_data;
2001                 rdata->pnode = NULL;
2002                 ndlp->rport = NULL;
2003         }
2004 }
2005
2006 static int
2007 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2008               uint32_t did)
2009 {
2010         D_ID mydid, ndlpdid, matchdid;
2011
2012         if (did == Bcast_DID)
2013                 return 0;
2014
2015         if (ndlp->nlp_DID == 0) {
2016                 return 0;
2017         }
2018
2019         /* First check for Direct match */
2020         if (ndlp->nlp_DID == did)
2021                 return 1;
2022
2023         /* Next check for area/domain identically equals 0 match */
2024         mydid.un.word = vport->fc_myDID;
2025         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2026                 return 0;
2027         }
2028
2029         matchdid.un.word = did;
2030         ndlpdid.un.word = ndlp->nlp_DID;
2031         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2032                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2033                     (mydid.un.b.area == matchdid.un.b.area)) {
2034                         if ((ndlpdid.un.b.domain == 0) &&
2035                             (ndlpdid.un.b.area == 0)) {
2036                                 if (ndlpdid.un.b.id)
2037                                         return 1;
2038                         }
2039                         return 0;
2040                 }
2041
2042                 matchdid.un.word = ndlp->nlp_DID;
2043                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2044                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2045                         if ((matchdid.un.b.domain == 0) &&
2046                             (matchdid.un.b.area == 0)) {
2047                                 if (matchdid.un.b.id)
2048                                         return 1;
2049                         }
2050                 }
2051         }
2052         return 0;
2053 }
2054
2055 /* Search for a nodelist entry */
2056 static struct lpfc_nodelist *
2057 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2058 {
2059         struct lpfc_nodelist *ndlp;
2060         uint32_t data1;
2061
2062         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2063                 if (lpfc_matchdid(vport, ndlp, did)) {
2064                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2065                                  ((uint32_t) ndlp->nlp_xri << 16) |
2066                                  ((uint32_t) ndlp->nlp_type << 8) |
2067                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2068                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2069                                          "0929 FIND node DID "
2070                                          "Data: x%p x%x x%x x%x\n",
2071                                          ndlp, ndlp->nlp_DID,
2072                                          ndlp->nlp_flag, data1);
2073                         return ndlp;
2074                 }
2075         }
2076
2077         /* FIND node did <did> NOT FOUND */
2078         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2079                          "0932 FIND node did x%x NOT FOUND.\n", did);
2080         return NULL;
2081 }
2082
2083 struct lpfc_nodelist *
2084 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2085 {
2086         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2087         struct lpfc_nodelist *ndlp;
2088
2089         spin_lock_irq(shost->host_lock);
2090         ndlp = __lpfc_findnode_did(vport, did);
2091         spin_unlock_irq(shost->host_lock);
2092         return ndlp;
2093 }
2094
2095 struct lpfc_nodelist *
2096 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2097 {
2098         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2099         struct lpfc_nodelist *ndlp;
2100
2101         ndlp = lpfc_findnode_did(vport, did);
2102         if (!ndlp) {
2103                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2104                     lpfc_rscn_payload_check(vport, did) == 0)
2105                         return NULL;
2106                 ndlp = (struct lpfc_nodelist *)
2107                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2108                 if (!ndlp)
2109                         return NULL;
2110                 lpfc_nlp_init(vport, ndlp, did);
2111                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2112                 spin_lock_irq(shost->host_lock);
2113                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2114                 spin_unlock_irq(shost->host_lock);
2115                 return ndlp;
2116         }
2117         if (vport->fc_flag & FC_RSCN_MODE) {
2118                 if (lpfc_rscn_payload_check(vport, did)) {
2119                         spin_lock_irq(shost->host_lock);
2120                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2121                         spin_unlock_irq(shost->host_lock);
2122
2123                         /* Since this node is marked for discovery,
2124                          * delay timeout is not needed.
2125                          */
2126                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2127                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2128                 } else
2129                         ndlp = NULL;
2130         } else {
2131                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2132                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
2133                         return NULL;
2134                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2135                 spin_lock_irq(shost->host_lock);
2136                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2137                 spin_unlock_irq(shost->host_lock);
2138         }
2139         return ndlp;
2140 }
2141
2142 /* Build a list of nodes to discover based on the loopmap */
2143 void
2144 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2145 {
2146         struct lpfc_hba  *phba = vport->phba;
2147         int j;
2148         uint32_t alpa, index;
2149
2150         if (!lpfc_is_link_up(phba))
2151                 return;
2152
2153         if (phba->fc_topology != TOPOLOGY_LOOP)
2154                 return;
2155
2156         /* Check for loop map present or not */
2157         if (phba->alpa_map[0]) {
2158                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2159                         alpa = phba->alpa_map[j];
2160                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2161                                 continue;
2162                         lpfc_setup_disc_node(vport, alpa);
2163                 }
2164         } else {
2165                 /* No alpamap, so try all alpa's */
2166                 for (j = 0; j < FC_MAXLOOP; j++) {
2167                         /* If cfg_scan_down is set, start from highest
2168                          * ALPA (0xef) to lowest (0x1).
2169                          */
2170                         if (vport->cfg_scan_down)
2171                                 index = j;
2172                         else
2173                                 index = FC_MAXLOOP - j - 1;
2174                         alpa = lpfcAlpaArray[index];
2175                         if ((vport->fc_myDID & 0xff) == alpa)
2176                                 continue;
2177                         lpfc_setup_disc_node(vport, alpa);
2178                 }
2179         }
2180         return;
2181 }
2182
2183 void
2184 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2185 {
2186         LPFC_MBOXQ_t *mbox;
2187         struct lpfc_sli *psli = &phba->sli;
2188         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2189         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2190         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2191         int  rc;
2192
2193         /*
2194          * if it's not a physical port or if we already send
2195          * clear_la then don't send it.
2196          */
2197         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2198             (vport->port_type != LPFC_PHYSICAL_PORT))
2199                 return;
2200
2201                         /* Link up discovery */
2202         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2203                 phba->link_state = LPFC_CLEAR_LA;
2204                 lpfc_clear_la(phba, mbox);
2205                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2206                 mbox->vport = vport;
2207                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2208                 if (rc == MBX_NOT_FINISHED) {
2209                         mempool_free(mbox, phba->mbox_mem_pool);
2210                         lpfc_disc_flush_list(vport);
2211                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2212                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2213                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2214                         phba->link_state = LPFC_HBA_ERROR;
2215                 }
2216         }
2217 }
2218
2219 /* Reg_vpi to tell firmware to resume normal operations */
2220 void
2221 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2222 {
2223         LPFC_MBOXQ_t *regvpimbox;
2224
2225         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2226         if (regvpimbox) {
2227                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2228                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2229                 regvpimbox->vport = vport;
2230                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2231                                         == MBX_NOT_FINISHED) {
2232                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2233                 }
2234         }
2235 }
2236
2237 /* Start Link up / RSCN discovery on NPR nodes */
2238 void
2239 lpfc_disc_start(struct lpfc_vport *vport)
2240 {
2241         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2242         struct lpfc_hba  *phba = vport->phba;
2243         uint32_t num_sent;
2244         uint32_t clear_la_pending;
2245         int did_changed;
2246
2247         if (!lpfc_is_link_up(phba))
2248                 return;
2249
2250         if (phba->link_state == LPFC_CLEAR_LA)
2251                 clear_la_pending = 1;
2252         else
2253                 clear_la_pending = 0;
2254
2255         if (vport->port_state < LPFC_VPORT_READY)
2256                 vport->port_state = LPFC_DISC_AUTH;
2257
2258         lpfc_set_disctmo(vport);
2259
2260         if (vport->fc_prevDID == vport->fc_myDID)
2261                 did_changed = 0;
2262         else
2263                 did_changed = 1;
2264
2265         vport->fc_prevDID = vport->fc_myDID;
2266         vport->num_disc_nodes = 0;
2267
2268         /* Start Discovery state <hba_state> */
2269         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2270                          "0202 Start Discovery hba state x%x "
2271                          "Data: x%x x%x x%x\n",
2272                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2273                          vport->fc_adisc_cnt);
2274
2275         /* First do ADISCs - if any */
2276         num_sent = lpfc_els_disc_adisc(vport);
2277
2278         if (num_sent)
2279                 return;
2280
2281         /*
2282          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2283          * continue discovery.
2284          */
2285         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2286             !(vport->fc_flag & FC_RSCN_MODE)) {
2287                 lpfc_issue_reg_vpi(phba, vport);
2288                 return;
2289         }
2290
2291         /*
2292          * For SLI2, we need to set port_state to READY and continue
2293          * discovery.
2294          */
2295         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2296                 /* If we get here, there is nothing to ADISC */
2297                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2298                         lpfc_issue_clear_la(phba, vport);
2299
2300                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2301                         vport->num_disc_nodes = 0;
2302                         /* go thru NPR nodes and issue ELS PLOGIs */
2303                         if (vport->fc_npr_cnt)
2304                                 lpfc_els_disc_plogi(vport);
2305
2306                         if (!vport->num_disc_nodes) {
2307                                 spin_lock_irq(shost->host_lock);
2308                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2309                                 spin_unlock_irq(shost->host_lock);
2310                                 lpfc_can_disctmo(vport);
2311                         }
2312                 }
2313                 vport->port_state = LPFC_VPORT_READY;
2314         } else {
2315                 /* Next do PLOGIs - if any */
2316                 num_sent = lpfc_els_disc_plogi(vport);
2317
2318                 if (num_sent)
2319                         return;
2320
2321                 if (vport->fc_flag & FC_RSCN_MODE) {
2322                         /* Check to see if more RSCNs came in while we
2323                          * were processing this one.
2324                          */
2325                         if ((vport->fc_rscn_id_cnt == 0) &&
2326                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2327                                 spin_lock_irq(shost->host_lock);
2328                                 vport->fc_flag &= ~FC_RSCN_MODE;
2329                                 spin_unlock_irq(shost->host_lock);
2330                                 lpfc_can_disctmo(vport);
2331                         } else
2332                                 lpfc_els_handle_rscn(vport);
2333                 }
2334         }
2335         return;
2336 }
2337
2338 /*
2339  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2340  *  ring the match the sppecified nodelist.
2341  */
2342 static void
2343 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2344 {
2345         LIST_HEAD(completions);
2346         struct lpfc_sli *psli;
2347         IOCB_t     *icmd;
2348         struct lpfc_iocbq    *iocb, *next_iocb;
2349         struct lpfc_sli_ring *pring;
2350
2351         psli = &phba->sli;
2352         pring = &psli->ring[LPFC_ELS_RING];
2353
2354         /* Error matching iocb on txq or txcmplq
2355          * First check the txq.
2356          */
2357         spin_lock_irq(&phba->hbalock);
2358         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2359                 if (iocb->context1 != ndlp) {
2360                         continue;
2361                 }
2362                 icmd = &iocb->iocb;
2363                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2364                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2365
2366                         list_move_tail(&iocb->list, &completions);
2367                         pring->txq_cnt--;
2368                 }
2369         }
2370
2371         /* Next check the txcmplq */
2372         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2373                 if (iocb->context1 != ndlp) {
2374                         continue;
2375                 }
2376                 icmd = &iocb->iocb;
2377                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2378                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2379                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2380                 }
2381         }
2382         spin_unlock_irq(&phba->hbalock);
2383
2384         while (!list_empty(&completions)) {
2385                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2386                 list_del_init(&iocb->list);
2387
2388                 if (!iocb->iocb_cmpl)
2389                         lpfc_sli_release_iocbq(phba, iocb);
2390                 else {
2391                         icmd = &iocb->iocb;
2392                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2393                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2394                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2395                 }
2396         }
2397 }
2398
2399 void
2400 lpfc_disc_flush_list(struct lpfc_vport *vport)
2401 {
2402         struct lpfc_nodelist *ndlp, *next_ndlp;
2403         struct lpfc_hba *phba = vport->phba;
2404
2405         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2406                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2407                                          nlp_listp) {
2408                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2409                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2410                                 lpfc_free_tx(phba, ndlp);
2411                         }
2412                 }
2413         }
2414 }
2415
2416 void
2417 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2418 {
2419         lpfc_els_flush_rscn(vport);
2420         lpfc_els_flush_cmd(vport);
2421         lpfc_disc_flush_list(vport);
2422 }
2423
2424 /*****************************************************************************/
2425 /*
2426  * NAME:     lpfc_disc_timeout
2427  *
2428  * FUNCTION: Fibre Channel driver discovery timeout routine.
2429  *
2430  * EXECUTION ENVIRONMENT: interrupt only
2431  *
2432  * CALLED FROM:
2433  *      Timer function
2434  *
2435  * RETURNS:
2436  *      none
2437  */
2438 /*****************************************************************************/
2439 void
2440 lpfc_disc_timeout(unsigned long ptr)
2441 {
2442         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2443         struct lpfc_hba   *phba = vport->phba;
2444         unsigned long flags = 0;
2445
2446         if (unlikely(!phba))
2447                 return;
2448
2449         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2450                 spin_lock_irqsave(&vport->work_port_lock, flags);
2451                 vport->work_port_events |= WORKER_DISC_TMO;
2452                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2453
2454                 spin_lock_irqsave(&phba->hbalock, flags);
2455                 if (phba->work_wait)
2456                         lpfc_worker_wake_up(phba);
2457                 spin_unlock_irqrestore(&phba->hbalock, flags);
2458         }
2459         return;
2460 }
2461
2462 static void
2463 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2464 {
2465         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2466         struct lpfc_hba  *phba = vport->phba;
2467         struct lpfc_sli  *psli = &phba->sli;
2468         struct lpfc_nodelist *ndlp, *next_ndlp;
2469         LPFC_MBOXQ_t *initlinkmbox;
2470         int rc, clrlaerr = 0;
2471
2472         if (!(vport->fc_flag & FC_DISC_TMO))
2473                 return;
2474
2475         spin_lock_irq(shost->host_lock);
2476         vport->fc_flag &= ~FC_DISC_TMO;
2477         spin_unlock_irq(shost->host_lock);
2478
2479         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2480                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2481                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2482
2483         switch (vport->port_state) {
2484
2485         case LPFC_LOCAL_CFG_LINK:
2486         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2487          * FAN
2488          */
2489                                 /* FAN timeout */
2490                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2491                                  "0221 FAN timeout\n");
2492                 /* Start discovery by sending FLOGI, clean up old rpis */
2493                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2494                                          nlp_listp) {
2495                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2496                                 continue;
2497                         if (ndlp->nlp_type & NLP_FABRIC) {
2498                                 /* Clean up the ndlp on Fabric connections */
2499                                 lpfc_drop_node(vport, ndlp);
2500                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2501                                 /* Fail outstanding IO now since device
2502                                  * is marked for PLOGI.
2503                                  */
2504                                 lpfc_unreg_rpi(vport, ndlp);
2505                         }
2506                 }
2507                 if (vport->port_state != LPFC_FLOGI) {
2508                         lpfc_initial_flogi(vport);
2509                 }
2510                 break;
2511
2512         case LPFC_FDISC:
2513         case LPFC_FLOGI:
2514         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2515                 /* Initial FLOGI timeout */
2516                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2517                                  "0222 Initial %s timeout\n",
2518                                  vport->vpi ? "FLOGI" : "FDISC");
2519
2520                 /* Assume no Fabric and go on with discovery.
2521                  * Check for outstanding ELS FLOGI to abort.
2522                  */
2523
2524                 /* FLOGI failed, so just use loop map to make discovery list */
2525                 lpfc_disc_list_loopmap(vport);
2526
2527                 /* Start discovery */
2528                 lpfc_disc_start(vport);
2529                 break;
2530
2531         case LPFC_FABRIC_CFG_LINK:
2532         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2533            NameServer login */
2534                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2535                                  "0223 Timeout while waiting for "
2536                                  "NameServer login\n");
2537                 /* Next look for NameServer ndlp */
2538                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2539                 if (ndlp)
2540                         lpfc_nlp_put(ndlp);
2541                 /* Start discovery */
2542                 lpfc_disc_start(vport);
2543                 break;
2544
2545         case LPFC_NS_QRY:
2546         /* Check for wait for NameServer Rsp timeout */
2547                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2548                                  "0224 NameServer Query timeout "
2549                                  "Data: x%x x%x\n",
2550                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2551
2552                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2553                         /* Try it one more time */
2554                         vport->fc_ns_retry++;
2555                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2556                                          vport->fc_ns_retry, 0);
2557                         if (rc == 0)
2558                                 break;
2559                 }
2560                 vport->fc_ns_retry = 0;
2561
2562                 /*
2563                  * Discovery is over.
2564                  * set port_state to PORT_READY if SLI2.
2565                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2566                  */
2567                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2568                         lpfc_issue_reg_vpi(phba, vport);
2569                 else  { /* NPIV Not enabled */
2570                         lpfc_issue_clear_la(phba, vport);
2571                         vport->port_state = LPFC_VPORT_READY;
2572                 }
2573
2574                 /* Setup and issue mailbox INITIALIZE LINK command */
2575                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2576                 if (!initlinkmbox) {
2577                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2578                                          "0206 Device Discovery "
2579                                          "completion error\n");
2580                         phba->link_state = LPFC_HBA_ERROR;
2581                         break;
2582                 }
2583
2584                 lpfc_linkdown(phba);
2585                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2586                                phba->cfg_link_speed);
2587                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2588                 initlinkmbox->vport = vport;
2589                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2590                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2591                 lpfc_set_loopback_flag(phba);
2592                 if (rc == MBX_NOT_FINISHED)
2593                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2594
2595                 break;
2596
2597         case LPFC_DISC_AUTH:
2598         /* Node Authentication timeout */
2599                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2600                                  "0227 Node Authentication timeout\n");
2601                 lpfc_disc_flush_list(vport);
2602
2603                 /*
2604                  * set port_state to PORT_READY if SLI2.
2605                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2606                  */
2607                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2608                         lpfc_issue_reg_vpi(phba, vport);
2609                 else {  /* NPIV Not enabled */
2610                         lpfc_issue_clear_la(phba, vport);
2611                         vport->port_state = LPFC_VPORT_READY;
2612                 }
2613                 break;
2614
2615         case LPFC_VPORT_READY:
2616                 if (vport->fc_flag & FC_RSCN_MODE) {
2617                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2618                                          "0231 RSCN timeout Data: x%x "
2619                                          "x%x\n",
2620                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2621
2622                         /* Cleanup any outstanding ELS commands */
2623                         lpfc_els_flush_cmd(vport);
2624
2625                         lpfc_els_flush_rscn(vport);
2626                         lpfc_disc_flush_list(vport);
2627                 }
2628                 break;
2629
2630         default:
2631                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2632                                  "0229 Unexpected discovery timeout, "
2633                                  "vport State x%x\n", vport->port_state);
2634                 break;
2635         }
2636
2637         switch (phba->link_state) {
2638         case LPFC_CLEAR_LA:
2639                                 /* CLEAR LA timeout */
2640                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2641                                  "0228 CLEAR LA timeout\n");
2642                 clrlaerr = 1;
2643                 break;
2644
2645         case LPFC_LINK_UNKNOWN:
2646         case LPFC_WARM_START:
2647         case LPFC_INIT_START:
2648         case LPFC_INIT_MBX_CMDS:
2649         case LPFC_LINK_DOWN:
2650         case LPFC_LINK_UP:
2651         case LPFC_HBA_ERROR:
2652                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2653                                  "0230 Unexpected timeout, hba link "
2654                                  "state x%x\n", phba->link_state);
2655                 clrlaerr = 1;
2656                 break;
2657
2658         case LPFC_HBA_READY:
2659                 break;
2660         }
2661
2662         if (clrlaerr) {
2663                 lpfc_disc_flush_list(vport);
2664                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2665                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2666                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2667                 vport->port_state = LPFC_VPORT_READY;
2668         }
2669
2670         return;
2671 }
2672
2673 /*
2674  * This routine handles processing a NameServer REG_LOGIN mailbox
2675  * command upon completion. It is setup in the LPFC_MBOXQ
2676  * as the completion routine when the command is
2677  * handed off to the SLI layer.
2678  */
2679 void
2680 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2681 {
2682         MAILBOX_t *mb = &pmb->mb;
2683         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2684         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2685         struct lpfc_vport    *vport = pmb->vport;
2686
2687         pmb->context1 = NULL;
2688
2689         ndlp->nlp_rpi = mb->un.varWords[0];
2690         ndlp->nlp_type |= NLP_FABRIC;
2691         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2692
2693         /*
2694          * Start issuing Fabric-Device Management Interface (FDMI) command to
2695          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2696          * fdmi-on=2 (supporting RPA/hostnmae)
2697          */
2698
2699         if (vport->cfg_fdmi_on == 1)
2700                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2701         else
2702                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2703
2704                                 /* Mailbox took a reference to the node */
2705         lpfc_nlp_put(ndlp);
2706         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2707         kfree(mp);
2708         mempool_free(pmb, phba->mbox_mem_pool);
2709
2710         return;
2711 }
2712
2713 static int
2714 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2715 {
2716         uint16_t *rpi = param;
2717
2718         return ndlp->nlp_rpi == *rpi;
2719 }
2720
2721 static int
2722 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2723 {
2724         return memcmp(&ndlp->nlp_portname, param,
2725                       sizeof(ndlp->nlp_portname)) == 0;
2726 }
2727
2728 struct lpfc_nodelist *
2729 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2730 {
2731         struct lpfc_nodelist *ndlp;
2732
2733         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2734                 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE &&
2735                     filter(ndlp, param))
2736                         return ndlp;
2737         }
2738         return NULL;
2739 }
2740
2741 /*
2742  * Search node lists for a remote port matching filter criteria
2743  * Caller needs to hold host_lock before calling this routine.
2744  */
2745 struct lpfc_nodelist *
2746 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2747 {
2748         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2749         struct lpfc_nodelist *ndlp;
2750
2751         spin_lock_irq(shost->host_lock);
2752         ndlp = __lpfc_find_node(vport, filter, param);
2753         spin_unlock_irq(shost->host_lock);
2754         return ndlp;
2755 }
2756
2757 /*
2758  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2759  * returns the node list element pointer else return NULL.
2760  */
2761 struct lpfc_nodelist *
2762 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2763 {
2764         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2765 }
2766
2767 struct lpfc_nodelist *
2768 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2769 {
2770         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2771         struct lpfc_nodelist *ndlp;
2772
2773         spin_lock_irq(shost->host_lock);
2774         ndlp = __lpfc_findnode_rpi(vport, rpi);
2775         spin_unlock_irq(shost->host_lock);
2776         return ndlp;
2777 }
2778
2779 /*
2780  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2781  * returns the node element list pointer else return NULL.
2782  */
2783 struct lpfc_nodelist *
2784 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2785 {
2786         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2787         struct lpfc_nodelist *ndlp;
2788
2789         spin_lock_irq(shost->host_lock);
2790         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2791         spin_unlock_irq(shost->host_lock);
2792         return ndlp;
2793 }
2794
2795 void
2796 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2797               uint32_t did)
2798 {
2799         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2800         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2801         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2802         init_timer(&ndlp->nlp_delayfunc);
2803         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2804         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2805         ndlp->nlp_DID = did;
2806         ndlp->vport = vport;
2807         ndlp->nlp_sid = NLP_NO_SID;
2808         INIT_LIST_HEAD(&ndlp->nlp_listp);
2809         kref_init(&ndlp->kref);
2810
2811         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2812                 "node init:       did:x%x",
2813                 ndlp->nlp_DID, 0, 0);
2814
2815         return;
2816 }
2817
2818 /* This routine releases all resources associated with a specifc NPort's ndlp
2819  * and mempool_free's the nodelist.
2820  */
2821 static void
2822 lpfc_nlp_release(struct kref *kref)
2823 {
2824         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2825                                                   kref);
2826
2827         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2828                 "node release:    did:x%x flg:x%x type:x%x",
2829                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2830
2831         lpfc_nlp_remove(ndlp->vport, ndlp);
2832         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2833 }
2834
2835 /* This routine bumps the reference count for a ndlp structure to ensure
2836  * that one discovery thread won't free a ndlp while another discovery thread
2837  * is using it.
2838  */
2839 struct lpfc_nodelist *
2840 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2841 {
2842         if (ndlp) {
2843                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2844                         "node get:        did:x%x flg:x%x refcnt:x%x",
2845                         ndlp->nlp_DID, ndlp->nlp_flag,
2846                         atomic_read(&ndlp->kref.refcount));
2847                 kref_get(&ndlp->kref);
2848         }
2849         return ndlp;
2850 }
2851
2852
2853 /* This routine decrements the reference count for a ndlp structure. If the
2854  * count goes to 0, this indicates the the associated nodelist should be freed.
2855  */
2856 int
2857 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2858 {
2859         if (ndlp) {
2860                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2861                 "node put:        did:x%x flg:x%x refcnt:x%x",
2862                         ndlp->nlp_DID, ndlp->nlp_flag,
2863                         atomic_read(&ndlp->kref.refcount));
2864         }
2865         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2866 }
2867
2868 /* This routine free's the specified nodelist if it is not in use
2869  * by any other discovery thread. This routine returns 1 if the ndlp
2870  * is not being used by anyone and has been freed. A return value of
2871  * 0 indicates it is being used by another discovery thread and the
2872  * refcount is left unchanged.
2873  */
2874 int
2875 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
2876 {
2877         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2878                 "node not used:   did:x%x flg:x%x refcnt:x%x",
2879                 ndlp->nlp_DID, ndlp->nlp_flag,
2880                 atomic_read(&ndlp->kref.refcount));
2881
2882         if (atomic_read(&ndlp->kref.refcount) == 1) {
2883                 lpfc_nlp_put(ndlp);
2884                 return 1;
2885         }
2886         return 0;
2887 }
2888