git.oblomov.eu 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 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  61
  62 void
  63 lpfc_terminate_rport_io(struct fc_rport *rport)
  64 {
  65         struct lpfc_rport_data *rdata;
  66         struct lpfc_nodelist * ndlp;
  67         struct lpfc_hba *phba;
  68
  69         rdata = rport->dd_data;
  70         ndlp = rdata->pnode;
  71
  72         if (!ndlp) {
  73                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  74                         printk(KERN_ERR "Cannot find remote node"
  75                         " to terminate I/O Data x%x\n",
  76                         rport->port_id);
  77                 return;
  78         }
  79
  80         phba  = ndlp->vport->phba;
  81
  82         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  83                 "rport terminate: sid:x%x did:x%x flg:x%x",
  84                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  85
  86         if (ndlp->nlp_sid != NLP_NO_SID) {
  87                 lpfc_sli_abort_iocb(ndlp->vport,
  88                         &phba->sli.ring[phba->sli.fcp_ring],
  89                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  90         }
  91
  92         /*
  93          * A device is normally blocked for rediscovery and unblocked when
  94          * devloss timeout happens.  In case a vport is removed or driver
  95          * unloaded before devloss timeout happens, we need to unblock here.
  96          */
  97         scsi_target_unblock(&rport->dev);
  98         return;
  99 }
 100
 101 /*
 102  * This function will be called when dev_loss_tmo fire.
 103  */
 104 void
 105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 106 {
 107         struct lpfc_rport_data *rdata;
 108         struct lpfc_nodelist * ndlp;
 109         struct lpfc_vport *vport;
 110         struct lpfc_hba   *phba;
 111         struct lpfc_work_evt *evtp;
 112         int  put_node;
 113         int  put_rport;
 114
 115         rdata = rport->dd_data;
 116         ndlp = rdata->pnode;
 117
 118         if (!ndlp) {
 119                 if (rport->scsi_target_id != -1) {
 120                         printk(KERN_ERR "Cannot find remote node"
 121                                 " for rport in dev_loss_tmo_callbk x%x\n",
 122                                 rport->port_id);
 123                 }
 124                 return;
 125         }
 126
 127         vport = ndlp->vport;
 128         phba  = vport->phba;
 129
 130         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 131                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 132                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 133
 134         /* Don't defer this if we are in the process of deleting the vport
 135          * or unloading the driver. The unload will cleanup the node
 136          * appropriately we just need to cleanup the ndlp rport info here.
 137          */
 138         if (vport->load_flag & FC_UNLOADING) {
 139                 put_node = rdata->pnode != NULL;
 140                 put_rport = ndlp->rport != NULL;
 141                 rdata->pnode = NULL;
 142                 ndlp->rport = NULL;
 143                 if (put_node)
 144                         lpfc_nlp_put(ndlp);
 145                 if (put_rport)
 146                         put_device(&rport->dev);
 147                 return;
 148         }
 149
 150         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 151                 return;
 152
 153         evtp = &ndlp->dev_loss_evt;
 154
 155         if (!list_empty(&evtp->evt_listp))
 156                 return;
 157
 158         spin_lock_irq(&phba->hbalock);
 159         evtp->evt_arg1  = ndlp;
 160         evtp->evt       = LPFC_EVT_DEV_LOSS;
 161         list_add_tail(&evtp->evt_listp, &phba->work_list);
 162         if (phba->work_wait)
 163                 wake_up(phba->work_wait);
 164
 165         spin_unlock_irq(&phba->hbalock);
 166
 167         return;
 168 }
 169
 170 /*
 171  * This function is called from the worker thread when dev_loss_tmo
 172  * expire.
 173  */
 174 static void
 175 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 176 {
 177         struct lpfc_rport_data *rdata;
 178         struct fc_rport   *rport;
 179         struct lpfc_vport *vport;
 180         struct lpfc_hba   *phba;
 181         uint8_t *name;
 182         int  put_node;
 183         int  put_rport;
 184         int warn_on = 0;
 185
 186         rport = ndlp->rport;
 187
 188         if (!rport)
 189                 return;
 190
 191         rdata = rport->dd_data;
 192         name = (uint8_t *) &ndlp->nlp_portname;
 193         vport = ndlp->vport;
 194         phba  = vport->phba;
 195
 196         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 197                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 198                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 199
 200         /* Don't defer this if we are in the process of deleting the vport
 201          * or unloading the driver. The unload will cleanup the node
 202          * appropriately we just need to cleanup the ndlp rport info here.
 203          */
 204         if (vport->load_flag & FC_UNLOADING) {
 205                 put_node = rdata->pnode != NULL;
 206                 put_rport = ndlp->rport != NULL;
 207                 rdata->pnode = NULL;
 208                 ndlp->rport = NULL;
 209                 if (put_node)
 210                         lpfc_nlp_put(ndlp);
 211                 if (put_rport)
 212                         put_device(&rport->dev);
 213                 return;
 214         }
 215
 216         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 217                 return;
 218
 219         if (ndlp->nlp_type & NLP_FABRIC) {
 220                 /* We will clean up these Nodes in linkup */
 221                 put_node = rdata->pnode != NULL;
 222                 put_rport = ndlp->rport != NULL;
 223                 rdata->pnode = NULL;
 224                 ndlp->rport = NULL;
 225                 if (put_node)
 226                         lpfc_nlp_put(ndlp);
 227                 if (put_rport)
 228                         put_device(&rport->dev);
 229                 return;
 230         }
 231
 232         if (ndlp->nlp_sid != NLP_NO_SID) {
 233                 warn_on = 1;
 234                 /* flush the target */
 235                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 236                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 237         }
 238         if (vport->load_flag & FC_UNLOADING)
 239                 warn_on = 0;
 240
 241         if (warn_on) {
 242                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 243                                  "0203 Devloss timeout on "
 244                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 245                                  "NPort x%x Data: x%x x%x x%x\n",
 246                                  *name, *(name+1), *(name+2), *(name+3),
 247                                  *(name+4), *(name+5), *(name+6), *(name+7),
 248                                  ndlp->nlp_DID, ndlp->nlp_flag,
 249                                  ndlp->nlp_state, ndlp->nlp_rpi);
 250         } else {
 251                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 252                                  "0204 Devloss timeout on "
 253                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 254                                  "NPort x%x Data: x%x x%x x%x\n",
 255                                  *name, *(name+1), *(name+2), *(name+3),
 256                                  *(name+4), *(name+5), *(name+6), *(name+7),
 257                                  ndlp->nlp_DID, ndlp->nlp_flag,
 258                                  ndlp->nlp_state, ndlp->nlp_rpi);
 259         }
 260
 261         put_node = rdata->pnode != NULL;
 262         put_rport = ndlp->rport != NULL;
 263         rdata->pnode = NULL;
 264         ndlp->rport = NULL;
 265         if (put_node)
 266                 lpfc_nlp_put(ndlp);
 267         if (put_rport)
 268                 put_device(&rport->dev);
 269
 270         if (!(vport->load_flag & FC_UNLOADING) &&
 271             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 272             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 273             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) {
 274                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 275         }
 276 }
 277
 278
 279 void
 280 lpfc_worker_wake_up(struct lpfc_hba *phba)
 281 {
 282         wake_up(phba->work_wait);
 283         return;
 284 }
 285
 286 static void
 287 lpfc_work_list_done(struct lpfc_hba *phba)
 288 {
 289         struct lpfc_work_evt  *evtp = NULL;
 290         struct lpfc_nodelist  *ndlp;
 291         int free_evt;
 292
 293         spin_lock_irq(&phba->hbalock);
 294         while (!list_empty(&phba->work_list)) {
 295                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 296                                  evt_listp);
 297                 spin_unlock_irq(&phba->hbalock);
 298                 free_evt = 1;
 299                 switch (evtp->evt) {
 300                 case LPFC_EVT_ELS_RETRY:
 301                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 302                         lpfc_els_retry_delay_handler(ndlp);
 303                         free_evt = 0; /* evt is part of ndlp */
 304                         break;
 305                 case LPFC_EVT_DEV_LOSS:
 306                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 307                         lpfc_nlp_get(ndlp);
 308                         lpfc_dev_loss_tmo_handler(ndlp);
 309                         free_evt = 0;
 310                         lpfc_nlp_put(ndlp);
 311                         break;
 312                 case LPFC_EVT_ONLINE:
 313                         if (phba->link_state < LPFC_LINK_DOWN)
 314                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 315                         else
 316                                 *(int *) (evtp->evt_arg1) = 0;
 317                         complete((struct completion *)(evtp->evt_arg2));
 318                         break;
 319                 case LPFC_EVT_OFFLINE_PREP:
 320                         if (phba->link_state >= LPFC_LINK_DOWN)
 321                                 lpfc_offline_prep(phba);
 322                         *(int *)(evtp->evt_arg1) = 0;
 323                         complete((struct completion *)(evtp->evt_arg2));
 324                         break;
 325                 case LPFC_EVT_OFFLINE:
 326                         lpfc_offline(phba);
 327                         lpfc_sli_brdrestart(phba);
 328                         *(int *)(evtp->evt_arg1) =
 329                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 330                         lpfc_unblock_mgmt_io(phba);
 331                         complete((struct completion *)(evtp->evt_arg2));
 332                         break;
 333                 case LPFC_EVT_WARM_START:
 334                         lpfc_offline(phba);
 335                         lpfc_reset_barrier(phba);
 336                         lpfc_sli_brdreset(phba);
 337                         lpfc_hba_down_post(phba);
 338                         *(int *)(evtp->evt_arg1) =
 339                                 lpfc_sli_brdready(phba, HS_MBRDY);
 340                         lpfc_unblock_mgmt_io(phba);
 341                         complete((struct completion *)(evtp->evt_arg2));
 342                         break;
 343                 case LPFC_EVT_KILL:
 344                         lpfc_offline(phba);
 345                         *(int *)(evtp->evt_arg1)
 346                                 = (phba->pport->stopped)
 347                                         ? 0 : lpfc_sli_brdkill(phba);
 348                         lpfc_unblock_mgmt_io(phba);
 349                         complete((struct completion *)(evtp->evt_arg2));
 350                         break;
 351                 }
 352                 if (free_evt)
 353                         kfree(evtp);
 354                 spin_lock_irq(&phba->hbalock);
 355         }
 356         spin_unlock_irq(&phba->hbalock);
 357
 358 }
 359
 360 static void
 361 lpfc_work_done(struct lpfc_hba *phba)
 362 {
 363         struct lpfc_sli_ring *pring;
 364         uint32_t ha_copy, status, control, work_port_events;
 365         struct lpfc_vport **vports;
 366         struct lpfc_vport *vport;
 367         int i;
 368
 369         spin_lock_irq(&phba->hbalock);
 370         ha_copy = phba->work_ha;
 371         phba->work_ha = 0;
 372         spin_unlock_irq(&phba->hbalock);
 373
 374         if (ha_copy & HA_ERATT)
 375                 lpfc_handle_eratt(phba);
 376
 377         if (ha_copy & HA_MBATT)
 378                 lpfc_sli_handle_mb_event(phba);
 379
 380         if (ha_copy & HA_LATT)
 381                 lpfc_handle_latt(phba);
 382         vports = lpfc_create_vport_work_array(phba);
 383         if (vports != NULL)
 384                 for(i = 0; i < LPFC_MAX_VPORTS; i++) {
 385                         /*
 386                          * We could have no vports in array if unloading, so if
 387                          * this happens then just use the pport
 388                          */
 389                         if (vports[i] == NULL && i == 0)
 390                                 vport = phba->pport;
 391                         else
 392                                 vport = vports[i];
 393                         if (vport == NULL)
 394                                 break;
 395                         work_port_events = vport->work_port_events;
 396                         if (work_port_events & WORKER_DISC_TMO)
 397                                 lpfc_disc_timeout_handler(vport);
 398                         if (work_port_events & WORKER_ELS_TMO)
 399                                 lpfc_els_timeout_handler(vport);
 400                         if (work_port_events & WORKER_HB_TMO)
 401                                 lpfc_hb_timeout_handler(phba);
 402                         if (work_port_events & WORKER_MBOX_TMO)
 403                                 lpfc_mbox_timeout_handler(phba);
 404                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 405                                 lpfc_unblock_fabric_iocbs(phba);
 406                         if (work_port_events & WORKER_FDMI_TMO)
 407                                 lpfc_fdmi_timeout_handler(vport);
 408                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 409                                 lpfc_ramp_down_queue_handler(phba);
 410                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 411                                 lpfc_ramp_up_queue_handler(phba);
 412                         spin_lock_irq(&vport->work_port_lock);
 413                         vport->work_port_events &= ~work_port_events;
 414                         spin_unlock_irq(&vport->work_port_lock);
 415                 }
 416         lpfc_destroy_vport_work_array(vports);
 417
 418         pring = &phba->sli.ring[LPFC_ELS_RING];
 419         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 420         status >>= (4*LPFC_ELS_RING);
 421         if ((status & HA_RXMASK)
 422                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 423                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 424                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 425                 } else {
 426                         lpfc_sli_handle_slow_ring_event(phba, pring,
 427                                                         (status &
 428                                                          HA_RXMASK));
 429                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 430                 }
 431                 /*
 432                  * Turn on Ring interrupts
 433                  */
 434                 spin_lock_irq(&phba->hbalock);
 435                 control = readl(phba->HCregaddr);
 436                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 437                         lpfc_debugfs_slow_ring_trc(phba,
 438                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 439                                 control, ha_copy, 0);
 440
 441                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 442                         writel(control, phba->HCregaddr);
 443                         readl(phba->HCregaddr); /* flush */
 444                 }
 445                 else {
 446                         lpfc_debugfs_slow_ring_trc(phba,
 447                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 448                                 control, ha_copy, 0);
 449                 }
 450                 spin_unlock_irq(&phba->hbalock);
 451         }
 452         lpfc_work_list_done(phba);
 453 }
 454
 455 static int
 456 check_work_wait_done(struct lpfc_hba *phba)
 457 {
 458         struct lpfc_vport *vport;
 459         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 460         int rc = 0;
 461
 462         spin_lock_irq(&phba->hbalock);
 463         list_for_each_entry(vport, &phba->port_list, listentry) {
 464                 if (vport->work_port_events) {
 465                         rc = 1;
 466                         break;
 467                 }
 468         }
 469         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 470             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 471                 rc = 1;
 472                 phba->work_found++;
 473         } else
 474                 phba->work_found = 0;
 475         spin_unlock_irq(&phba->hbalock);
 476         return rc;
 477 }
 478
 479
 480 int
 481 lpfc_do_work(void *p)
 482 {
 483         struct lpfc_hba *phba = p;
 484         int rc;
 485         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 486
 487         set_user_nice(current, -20);
 488         phba->work_wait = &work_waitq;
 489         phba->work_found = 0;
 490
 491         while (1) {
 492
 493                 rc = wait_event_interruptible(work_waitq,
 494                                               check_work_wait_done(phba));
 495
 496                 BUG_ON(rc);
 497
 498                 if (kthread_should_stop())
 499                         break;
 500
 501                 lpfc_work_done(phba);
 502
 503                 /* If there is alot of slow ring work, like during link up
 504                  * check_work_wait_done() may cause this thread to not give
 505                  * up the CPU for very long periods of time. This may cause
 506                  * soft lockups or other problems. To avoid these situations
 507                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 508                  * consecutive iterations.
 509                  */
 510                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 511                         phba->work_found = 0;
 512                         schedule();
 513                 }
 514         }
 515         phba->work_wait = NULL;
 516         return 0;
 517 }
 518
 519 /*
 520  * This is only called to handle FC worker events. Since this a rare
 521  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 522  * embedding it in the IOCB.
 523  */
 524 int
 525 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 526                       uint32_t evt)
 527 {
 528         struct lpfc_work_evt  *evtp;
 529         unsigned long flags;
 530
 531         /*
 532          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 533          * be queued to worker thread for processing
 534          */
 535         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 536         if (!evtp)
 537                 return 0;
 538
 539         evtp->evt_arg1  = arg1;
 540         evtp->evt_arg2  = arg2;
 541         evtp->evt       = evt;
 542
 543         spin_lock_irqsave(&phba->hbalock, flags);
 544         list_add_tail(&evtp->evt_listp, &phba->work_list);
 545         if (phba->work_wait)
 546                 lpfc_worker_wake_up(phba);
 547         spin_unlock_irqrestore(&phba->hbalock, flags);
 548
 549         return 1;
 550 }
 551
 552 void
 553 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 554 {
 555         struct lpfc_hba  *phba = vport->phba;
 556         struct lpfc_nodelist *ndlp, *next_ndlp;
 557         int  rc;
 558
 559         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 560                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 561                         continue;
 562
 563                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 564                         ((vport->port_type == LPFC_NPIV_PORT) &&
 565                         (ndlp->nlp_DID == NameServer_DID)))
 566                         lpfc_unreg_rpi(vport, ndlp);
 567
 568                 /* Leave Fabric nodes alone on link down */
 569                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 570                         continue;
 571                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 572                                              remove
 573                                              ? NLP_EVT_DEVICE_RM
 574                                              : NLP_EVT_DEVICE_RECOVERY);
 575         }
 576         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 577                 lpfc_mbx_unreg_vpi(vport);
 578                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 579         }
 580 }
 581
 582 void
 583 lpfc_port_link_failure(struct lpfc_vport *vport)
 584 {
 585         /* Cleanup any outstanding RSCN activity */
 586         lpfc_els_flush_rscn(vport);
 587
 588         /* Cleanup any outstanding ELS commands */
 589         lpfc_els_flush_cmd(vport);
 590
 591         lpfc_cleanup_rpis(vport, 0);
 592
 593         /* Turn off discovery timer if its running */
 594         lpfc_can_disctmo(vport);
 595 }
 596
 597 static void
 598 lpfc_linkdown_port(struct lpfc_vport *vport)
 599 {
 600         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 601
 602         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 603
 604         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 605                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 606                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 607
 608         lpfc_port_link_failure(vport);
 609
 610 }
 611
 612 int
 613 lpfc_linkdown(struct lpfc_hba *phba)
 614 {
 615         struct lpfc_vport *vport = phba->pport;
 616         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 617         struct lpfc_vport **vports;
 618         LPFC_MBOXQ_t          *mb;
 619         int i;
 620
 621         if (phba->link_state == LPFC_LINK_DOWN) {
 622                 return 0;
 623         }
 624         spin_lock_irq(&phba->hbalock);
 625         if (phba->link_state > LPFC_LINK_DOWN) {
 626                 phba->link_state = LPFC_LINK_DOWN;
 627                 phba->pport->fc_flag &= ~FC_LBIT;
 628         }
 629         spin_unlock_irq(&phba->hbalock);
 630         vports = lpfc_create_vport_work_array(phba);
 631         if (vports != NULL)
 632                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 633                         /* Issue a LINK DOWN event to all nodes */
 634                         lpfc_linkdown_port(vports[i]);
 635                 }
 636         lpfc_destroy_vport_work_array(vports);
 637         /* Clean up any firmware default rpi's */
 638         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 639         if (mb) {
 640                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 641                 mb->vport = vport;
 642                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 643                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 644                     == MBX_NOT_FINISHED) {
 645                         mempool_free(mb, phba->mbox_mem_pool);
 646                 }
 647         }
 648
 649         /* Setup myDID for link up if we are in pt2pt mode */
 650         if (phba->pport->fc_flag & FC_PT2PT) {
 651                 phba->pport->fc_myDID = 0;
 652                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 653                 if (mb) {
 654                         lpfc_config_link(phba, mb);
 655                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 656                         mb->vport = vport;
 657                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 658                             == MBX_NOT_FINISHED) {
 659                                 mempool_free(mb, phba->mbox_mem_pool);
 660                         }
 661                 }
 662                 spin_lock_irq(shost->host_lock);
 663                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 664                 spin_unlock_irq(shost->host_lock);
 665         }
 666
 667         return 0;
 668 }
 669
 670 static void
 671 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 672 {
 673         struct lpfc_nodelist *ndlp;
 674
 675         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 676                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 677                         continue;
 678
 679                 if (ndlp->nlp_type & NLP_FABRIC) {
 680                                 /* On Linkup its safe to clean up the ndlp
 681                                  * from Fabric connections.
 682                                  */
 683                         if (ndlp->nlp_DID != Fabric_DID)
 684                                 lpfc_unreg_rpi(vport, ndlp);
 685                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 686                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 687                                 /* Fail outstanding IO now since device is
 688                                  * marked for PLOGI.
 689                                  */
 690                         lpfc_unreg_rpi(vport, ndlp);
 691                 }
 692         }
 693 }
 694
 695 static void
 696 lpfc_linkup_port(struct lpfc_vport *vport)
 697 {
 698         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 699         struct lpfc_hba  *phba = vport->phba;
 700
 701         if ((vport->load_flag & FC_UNLOADING) != 0)
 702                 return;
 703
 704         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 705                 "Link Up:         top:x%x speed:x%x flg:x%x",
 706                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 707
 708         /* If NPIV is not enabled, only bring the physical port up */
 709         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 710                 (vport != phba->pport))
 711                 return;
 712
 713         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 714
 715         spin_lock_irq(shost->host_lock);
 716         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 717                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 718         vport->fc_flag |= FC_NDISC_ACTIVE;
 719         vport->fc_ns_retry = 0;
 720         spin_unlock_irq(shost->host_lock);
 721
 722         if (vport->fc_flag & FC_LBIT)
 723                 lpfc_linkup_cleanup_nodes(vport);
 724
 725 }
 726
 727 static int
 728 lpfc_linkup(struct lpfc_hba *phba)
 729 {
 730         struct lpfc_vport **vports;
 731         int i;
 732
 733         phba->link_state = LPFC_LINK_UP;
 734
 735         /* Unblock fabric iocbs if they are blocked */
 736         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 737         del_timer_sync(&phba->fabric_block_timer);
 738
 739         vports = lpfc_create_vport_work_array(phba);
 740         if (vports != NULL)
 741                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
 742                         lpfc_linkup_port(vports[i]);
 743         lpfc_destroy_vport_work_array(vports);
 744         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 745                 lpfc_issue_clear_la(phba, phba->pport);
 746
 747         return 0;
 748 }
 749
 750 /*
 751  * This routine handles processing a CLEAR_LA mailbox
 752  * command upon completion. It is setup in the LPFC_MBOXQ
 753  * as the completion routine when the command is
 754  * handed off to the SLI layer.
 755  */
 756 static void
 757 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 758 {
 759         struct lpfc_vport *vport = pmb->vport;
 760         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 761         struct lpfc_sli   *psli = &phba->sli;
 762         MAILBOX_t *mb = &pmb->mb;
 763         uint32_t control;
 764
 765         /* Since we don't do discovery right now, turn these off here */
 766         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 767         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 768         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 769
 770         /* Check for error */
 771         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 772                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 773                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 774                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 775                                  "state x%x\n",
 776                                  mb->mbxStatus, vport->port_state);
 777                 phba->link_state = LPFC_HBA_ERROR;
 778                 goto out;
 779         }
 780
 781         if (vport->port_type == LPFC_PHYSICAL_PORT)
 782                 phba->link_state = LPFC_HBA_READY;
 783
 784         spin_lock_irq(&phba->hbalock);
 785         psli->sli_flag |= LPFC_PROCESS_LA;
 786         control = readl(phba->HCregaddr);
 787         control |= HC_LAINT_ENA;
 788         writel(control, phba->HCregaddr);
 789         readl(phba->HCregaddr); /* flush */
 790         spin_unlock_irq(&phba->hbalock);
 791         return;
 792
 793         vport->num_disc_nodes = 0;
 794         /* go thru NPR nodes and issue ELS PLOGIs */
 795         if (vport->fc_npr_cnt)
 796                 lpfc_els_disc_plogi(vport);
 797
 798         if (!vport->num_disc_nodes) {
 799                 spin_lock_irq(shost->host_lock);
 800                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 801                 spin_unlock_irq(shost->host_lock);
 802         }
 803
 804         vport->port_state = LPFC_VPORT_READY;
 805
 806 out:
 807         /* Device Discovery completes */
 808         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 809                          "0225 Device Discovery completes\n");
 810         mempool_free(pmb, phba->mbox_mem_pool);
 811
 812         spin_lock_irq(shost->host_lock);
 813         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 814         spin_unlock_irq(shost->host_lock);
 815
 816         del_timer_sync(&phba->fc_estabtmo);
 817
 818         lpfc_can_disctmo(vport);
 819
 820         /* turn on Link Attention interrupts */
 821
 822         spin_lock_irq(&phba->hbalock);
 823         psli->sli_flag |= LPFC_PROCESS_LA;
 824         control = readl(phba->HCregaddr);
 825         control |= HC_LAINT_ENA;
 826         writel(control, phba->HCregaddr);
 827         readl(phba->HCregaddr); /* flush */
 828         spin_unlock_irq(&phba->hbalock);
 829
 830         return;
 831 }
 832
 833
 834 static void
 835 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 836 {
 837         struct lpfc_vport *vport = pmb->vport;
 838
 839         if (pmb->mb.mbxStatus)
 840                 goto out;
 841
 842         mempool_free(pmb, phba->mbox_mem_pool);
 843
 844         if (phba->fc_topology == TOPOLOGY_LOOP &&
 845             vport->fc_flag & FC_PUBLIC_LOOP &&
 846             !(vport->fc_flag & FC_LBIT)) {
 847                         /* Need to wait for FAN - use discovery timer
 848                          * for timeout.  port_state is identically
 849                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 850                          */
 851                         lpfc_set_disctmo(vport);
 852                         return;
 853         }
 854
 855         /* Start discovery by sending a FLOGI. port_state is identically
 856          * LPFC_FLOGI while waiting for FLOGI cmpl
 857          */
 858         if (vport->port_state != LPFC_FLOGI) {
 859                 lpfc_initial_flogi(vport);
 860         }
 861         return;
 862
 863 out:
 864         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 865                          "0306 CONFIG_LINK mbxStatus error x%x "
 866                          "HBA state x%x\n",
 867                          pmb->mb.mbxStatus, vport->port_state);
 868         mempool_free(pmb, phba->mbox_mem_pool);
 869
 870         lpfc_linkdown(phba);
 871
 872         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 873                          "0200 CONFIG_LINK bad hba state x%x\n",
 874                          vport->port_state);
 875
 876         lpfc_issue_clear_la(phba, vport);
 877         return;
 878 }
 879
 880 static void
 881 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 882 {
 883         MAILBOX_t *mb = &pmb->mb;
 884         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 885         struct lpfc_vport  *vport = pmb->vport;
 886
 887
 888         /* Check for error */
 889         if (mb->mbxStatus) {
 890                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 891                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 892                                  "0319 READ_SPARAM mbxStatus error x%x "
 893                                  "hba state x%x>\n",
 894                                  mb->mbxStatus, vport->port_state);
 895                 lpfc_linkdown(phba);
 896                 goto out;
 897         }
 898
 899         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 900                sizeof (struct serv_parm));
 901         if (phba->cfg_soft_wwnn)
 902                 u64_to_wwn(phba->cfg_soft_wwnn,
 903                            vport->fc_sparam.nodeName.u.wwn);
 904         if (phba->cfg_soft_wwpn)
 905                 u64_to_wwn(phba->cfg_soft_wwpn,
 906                            vport->fc_sparam.portName.u.wwn);
 907         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 908                sizeof(vport->fc_nodename));
 909         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 910                sizeof(vport->fc_portname));
 911         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 912                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 913                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 914         }
 915
 916         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 917         kfree(mp);
 918         mempool_free(pmb, phba->mbox_mem_pool);
 919         return;
 920
 921 out:
 922         pmb->context1 = NULL;
 923         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 924         kfree(mp);
 925         lpfc_issue_clear_la(phba, vport);
 926         mempool_free(pmb, phba->mbox_mem_pool);
 927         return;
 928 }
 929
 930 static void
 931 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 932 {
 933         struct lpfc_vport *vport = phba->pport;
 934         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 935         int i;
 936         struct lpfc_dmabuf *mp;
 937         int rc;
 938
 939         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 940         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 941
 942         spin_lock_irq(&phba->hbalock);
 943         switch (la->UlnkSpeed) {
 944         case LA_1GHZ_LINK:
 945                 phba->fc_linkspeed = LA_1GHZ_LINK;
 946                 break;
 947         case LA_2GHZ_LINK:
 948                 phba->fc_linkspeed = LA_2GHZ_LINK;
 949                 break;
 950         case LA_4GHZ_LINK:
 951                 phba->fc_linkspeed = LA_4GHZ_LINK;
 952                 break;
 953         case LA_8GHZ_LINK:
 954                 phba->fc_linkspeed = LA_8GHZ_LINK;
 955                 break;
 956         default:
 957                 phba->fc_linkspeed = LA_UNKNW_LINK;
 958                 break;
 959         }
 960
 961         phba->fc_topology = la->topology;
 962         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 963
 964         if (phba->fc_topology == TOPOLOGY_LOOP) {
 965                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 966
 967                                 /* Get Loop Map information */
 968                 if (la->il)
 969                         vport->fc_flag |= FC_LBIT;
 970
 971                 vport->fc_myDID = la->granted_AL_PA;
 972                 i = la->un.lilpBde64.tus.f.bdeSize;
 973
 974                 if (i == 0) {
 975                         phba->alpa_map[0] = 0;
 976                 } else {
 977                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 978                                 int numalpa, j, k;
 979                                 union {
 980                                         uint8_t pamap[16];
 981                                         struct {
 982                                                 uint32_t wd1;
 983                                                 uint32_t wd2;
 984                                                 uint32_t wd3;
 985                                                 uint32_t wd4;
 986                                         } pa;
 987                                 } un;
 988                                 numalpa = phba->alpa_map[0];
 989                                 j = 0;
 990                                 while (j < numalpa) {
 991                                         memset(un.pamap, 0, 16);
 992                                         for (k = 1; j < numalpa; k++) {
 993                                                 un.pamap[k - 1] =
 994                                                         phba->alpa_map[j + 1];
 995                                                 j++;
 996                                                 if (k == 16)
 997                                                         break;
 998                                         }
 999                                         /* Link Up Event ALPA map */
1000                                         lpfc_printf_log(phba,
1001                                                         KERN_WARNING,
1002                                                         LOG_LINK_EVENT,
1003                                                         "1304 Link Up Event "
1004                                                         "ALPA map Data: x%x "
1005                                                         "x%x x%x x%x\n",
1006                                                         un.pa.wd1, un.pa.wd2,
1007                                                         un.pa.wd3, un.pa.wd4);
1008                                 }
1009                         }
1010                 }
1011         } else {
1012                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1013                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1014                            (phba->sli_rev == 3))
1015                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1016                 }
1017                 vport->fc_myDID = phba->fc_pref_DID;
1018                 vport->fc_flag |= FC_LBIT;
1019         }
1020         spin_unlock_irq(&phba->hbalock);
1021
1022         lpfc_linkup(phba);
1023         if (sparam_mbox) {
1024                 lpfc_read_sparam(phba, sparam_mbox, 0);
1025                 sparam_mbox->vport = vport;
1026                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1027                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1028                 if (rc == MBX_NOT_FINISHED) {
1029                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1030                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1031                         kfree(mp);
1032                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1033                         if (cfglink_mbox)
1034                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1035                         goto out;
1036                 }
1037         }
1038
1039         if (cfglink_mbox) {
1040                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1041                 lpfc_config_link(phba, cfglink_mbox);
1042                 cfglink_mbox->vport = vport;
1043                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1044                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1045                 if (rc != MBX_NOT_FINISHED)
1046                         return;
1047                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1048         }
1049 out:
1050         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1051         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1052                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1053                          vport->port_state, sparam_mbox, cfglink_mbox);
1054         lpfc_issue_clear_la(phba, vport);
1055         return;
1056 }
1057
1058 static void
1059 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1060 {
1061         uint32_t control;
1062         struct lpfc_sli *psli = &phba->sli;
1063
1064         lpfc_linkdown(phba);
1065
1066         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1067         spin_lock_irq(&phba->hbalock);
1068         psli->sli_flag |= LPFC_PROCESS_LA;
1069         control = readl(phba->HCregaddr);
1070         control |= HC_LAINT_ENA;
1071         writel(control, phba->HCregaddr);
1072         readl(phba->HCregaddr); /* flush */
1073         spin_unlock_irq(&phba->hbalock);
1074 }
1075
1076 /*
1077  * This routine handles processing a READ_LA mailbox
1078  * command upon completion. It is setup in the LPFC_MBOXQ
1079  * as the completion routine when the command is
1080  * handed off to the SLI layer.
1081  */
1082 void
1083 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1084 {
1085         struct lpfc_vport *vport = pmb->vport;
1086         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1087         READ_LA_VAR *la;
1088         MAILBOX_t *mb = &pmb->mb;
1089         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1090
1091         /* Check for error */
1092         if (mb->mbxStatus) {
1093                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1094                                 "1307 READ_LA mbox error x%x state x%x\n",
1095                                 mb->mbxStatus, vport->port_state);
1096                 lpfc_mbx_issue_link_down(phba);
1097                 phba->link_state = LPFC_HBA_ERROR;
1098                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1099         }
1100
1101         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1102
1103         memcpy(&phba->alpa_map[0], mp->virt, 128);
1104
1105         spin_lock_irq(shost->host_lock);
1106         if (la->pb)
1107                 vport->fc_flag |= FC_BYPASSED_MODE;
1108         else
1109                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1110         spin_unlock_irq(shost->host_lock);
1111
1112         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1113             (phba->fc_eventTag == la->eventTag)) {
1114                 phba->fc_stat.LinkMultiEvent++;
1115                 if (la->attType == AT_LINK_UP)
1116                         if (phba->fc_eventTag != 0)
1117                                 lpfc_linkdown(phba);
1118         }
1119
1120         phba->fc_eventTag = la->eventTag;
1121
1122         if (la->attType == AT_LINK_UP) {
1123                 phba->fc_stat.LinkUp++;
1124                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1125                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1126                                         "1306 Link Up Event in loop back mode "
1127                                         "x%x received Data: x%x x%x x%x x%x\n",
1128                                         la->eventTag, phba->fc_eventTag,
1129                                         la->granted_AL_PA, la->UlnkSpeed,
1130                                         phba->alpa_map[0]);
1131                 } else {
1132                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1133                                         "1303 Link Up Event x%x received "
1134                                         "Data: x%x x%x x%x x%x\n",
1135                                         la->eventTag, phba->fc_eventTag,
1136                                         la->granted_AL_PA, la->UlnkSpeed,
1137                                         phba->alpa_map[0]);
1138                 }
1139                 lpfc_mbx_process_link_up(phba, la);
1140         } else {
1141                 phba->fc_stat.LinkDown++;
1142                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1143                                 "1305 Link Down Event x%x received "
1144                                 "Data: x%x x%x x%x\n",
1145                                 la->eventTag, phba->fc_eventTag,
1146                                 phba->pport->port_state, vport->fc_flag);
1147                 lpfc_mbx_issue_link_down(phba);
1148         }
1149
1150 lpfc_mbx_cmpl_read_la_free_mbuf:
1151         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1152         kfree(mp);
1153         mempool_free(pmb, phba->mbox_mem_pool);
1154         return;
1155 }
1156
1157 /*
1158  * This routine handles processing a REG_LOGIN mailbox
1159  * command upon completion. It is setup in the LPFC_MBOXQ
1160  * as the completion routine when the command is
1161  * handed off to the SLI layer.
1162  */
1163 void
1164 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1165 {
1166         struct lpfc_vport  *vport = pmb->vport;
1167         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1168         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1169
1170         pmb->context1 = NULL;
1171
1172         /* Good status, call state machine */
1173         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1174         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1175         kfree(mp);
1176         mempool_free(pmb, phba->mbox_mem_pool);
1177         lpfc_nlp_put(ndlp);
1178
1179         return;
1180 }
1181
1182 static void
1183 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1184 {
1185         MAILBOX_t *mb = &pmb->mb;
1186         struct lpfc_vport *vport = pmb->vport;
1187         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1188
1189         switch (mb->mbxStatus) {
1190         case 0x0011:
1191         case 0x0020:
1192         case 0x9700:
1193                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1194                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1195                                  mb->mbxStatus);
1196                 break;
1197         }
1198         vport->unreg_vpi_cmpl = VPORT_OK;
1199         mempool_free(pmb, phba->mbox_mem_pool);
1200         /*
1201          * This shost reference might have been taken at the beginning of
1202          * lpfc_vport_delete()
1203          */
1204         if (vport->load_flag & FC_UNLOADING)
1205                 scsi_host_put(shost);
1206 }
1207
1208 void
1209 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1210 {
1211         struct lpfc_hba  *phba = vport->phba;
1212         LPFC_MBOXQ_t *mbox;
1213         int rc;
1214
1215         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1216         if (!mbox)
1217                 return;
1218
1219         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1220         mbox->vport = vport;
1221         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1222         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1223         if (rc == MBX_NOT_FINISHED) {
1224                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1225                                  "1800 Could not issue unreg_vpi\n");
1226                 mempool_free(mbox, phba->mbox_mem_pool);
1227                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1228         }
1229 }
1230
1231 static void
1232 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1233 {
1234         struct lpfc_vport *vport = pmb->vport;
1235         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1236         MAILBOX_t *mb = &pmb->mb;
1237
1238         switch (mb->mbxStatus) {
1239         case 0x0011:
1240         case 0x9601:
1241         case 0x9602:
1242                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1243                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1244                                  mb->mbxStatus);
1245                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1246                 spin_lock_irq(shost->host_lock);
1247                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1248                 spin_unlock_irq(shost->host_lock);
1249                 vport->fc_myDID = 0;
1250                 goto out;
1251         }
1252
1253         vport->num_disc_nodes = 0;
1254         /* go thru NPR list and issue ELS PLOGIs */
1255         if (vport->fc_npr_cnt)
1256                 lpfc_els_disc_plogi(vport);
1257
1258         if (!vport->num_disc_nodes) {
1259                 spin_lock_irq(shost->host_lock);
1260                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1261                 spin_unlock_irq(shost->host_lock);
1262                 lpfc_can_disctmo(vport);
1263         }
1264         vport->port_state = LPFC_VPORT_READY;
1265
1266 out:
1267         mempool_free(pmb, phba->mbox_mem_pool);
1268         return;
1269 }
1270
1271 /*
1272  * This routine handles processing a Fabric REG_LOGIN mailbox
1273  * command upon completion. It is setup in the LPFC_MBOXQ
1274  * as the completion routine when the command is
1275  * handed off to the SLI layer.
1276  */
1277 void
1278 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1279 {
1280         struct lpfc_vport *vport = pmb->vport;
1281         MAILBOX_t *mb = &pmb->mb;
1282         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1283         struct lpfc_nodelist *ndlp;
1284         struct lpfc_vport **vports;
1285         int i;
1286
1287         ndlp = (struct lpfc_nodelist *) pmb->context2;
1288         pmb->context1 = NULL;
1289         pmb->context2 = NULL;
1290         if (mb->mbxStatus) {
1291                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1292                 kfree(mp);
1293                 mempool_free(pmb, phba->mbox_mem_pool);
1294                 lpfc_nlp_put(ndlp);
1295
1296                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1297                         /* FLOGI failed, use loop map to make discovery list */
1298                         lpfc_disc_list_loopmap(vport);
1299
1300                         /* Start discovery */
1301                         lpfc_disc_start(vport);
1302                         return;
1303                 }
1304
1305                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1306                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1307                                  "0258 Register Fabric login error: 0x%x\n",
1308                                  mb->mbxStatus);
1309                 return;
1310         }
1311
1312         ndlp->nlp_rpi = mb->un.varWords[0];
1313         ndlp->nlp_type |= NLP_FABRIC;
1314         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1315
1316         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1317
1318         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1319                 vports = lpfc_create_vport_work_array(phba);
1320                 if (vports != NULL)
1321                         for(i = 0;
1322                             i < LPFC_MAX_VPORTS && vports[i] != NULL;
1323                             i++) {
1324                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1325                                         continue;
1326                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1327                                         lpfc_initial_fdisc(vports[i]);
1328                                 else if (phba->sli3_options &
1329                                                 LPFC_SLI3_NPIV_ENABLED) {
1330                                         lpfc_vport_set_state(vports[i],
1331                                                 FC_VPORT_NO_FABRIC_SUPP);
1332                                         lpfc_printf_vlog(vport, KERN_ERR,
1333                                                          LOG_ELS,
1334                                                         "0259 No NPIV "
1335                                                         "Fabric support\n");
1336                                 }
1337                         }
1338                 lpfc_destroy_vport_work_array(vports);
1339                 lpfc_do_scr_ns_plogi(phba, vport);
1340         }
1341
1342         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1343         kfree(mp);
1344         mempool_free(pmb, phba->mbox_mem_pool);
1345         return;
1346 }
1347
1348 /*
1349  * This routine handles processing a NameServer REG_LOGIN mailbox
1350  * command upon completion. It is setup in the LPFC_MBOXQ
1351  * as the completion routine when the command is
1352  * handed off to the SLI layer.
1353  */
1354 void
1355 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1356 {
1357         MAILBOX_t *mb = &pmb->mb;
1358         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1359         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1360         struct lpfc_vport *vport = pmb->vport;
1361
1362         if (mb->mbxStatus) {
1363 out:
1364                 lpfc_nlp_put(ndlp);
1365                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1366                 kfree(mp);
1367                 mempool_free(pmb, phba->mbox_mem_pool);
1368
1369                 /* If no other thread is using the ndlp, free it */
1370                 lpfc_nlp_not_used(ndlp);
1371
1372                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1373                         /*
1374                          * RegLogin failed, use loop map to make discovery
1375                          * list
1376                          */
1377                         lpfc_disc_list_loopmap(vport);
1378
1379                         /* Start discovery */
1380                         lpfc_disc_start(vport);
1381                         return;
1382                 }
1383                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1384                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1385                                  "0260 Register NameServer error: 0x%x\n",
1386                                  mb->mbxStatus);
1387                 return;
1388         }
1389
1390         pmb->context1 = NULL;
1391
1392         ndlp->nlp_rpi = mb->un.varWords[0];
1393         ndlp->nlp_type |= NLP_FABRIC;
1394         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1395
1396         if (vport->port_state < LPFC_VPORT_READY) {
1397                 /* Link up discovery requires Fabric registration. */
1398                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1399                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1400                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1401                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1402                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1403
1404                 /* Issue SCR just before NameServer GID_FT Query */
1405                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1406         }
1407
1408         vport->fc_ns_retry = 0;
1409         /* Good status, issue CT Request to NameServer */
1410         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1411                 /* Cannot issue NameServer Query, so finish up discovery */
1412                 goto out;
1413         }
1414
1415         lpfc_nlp_put(ndlp);
1416         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1417         kfree(mp);
1418         mempool_free(pmb, phba->mbox_mem_pool);
1419
1420         return;
1421 }
1422
1423 static void
1424 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1425 {
1426         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1427         struct fc_rport  *rport;
1428         struct lpfc_rport_data *rdata;
1429         struct fc_rport_identifiers rport_ids;
1430         struct lpfc_hba  *phba = vport->phba;
1431
1432         /* Remote port has reappeared. Re-register w/ FC transport */
1433         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1434         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1435         rport_ids.port_id = ndlp->nlp_DID;
1436         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1437
1438         /*
1439          * We leave our node pointer in rport->dd_data when we unregister a
1440          * FCP target port.  But fc_remote_port_add zeros the space to which
1441          * rport->dd_data points.  So, if we're reusing a previously
1442          * registered port, drop the reference that we took the last time we
1443          * registered the port.
1444          */
1445         if (ndlp->rport && ndlp->rport->dd_data &&
1446             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1447                 lpfc_nlp_put(ndlp);
1448         }
1449
1450         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1451                 "rport add:       did:x%x flg:x%x type x%x",
1452                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1453
1454         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1455         if (!rport || !get_device(&rport->dev)) {
1456                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1457                            "Warning: fc_remote_port_add failed\n");
1458                 return;
1459         }
1460
1461         /* initialize static port data */
1462         rport->maxframe_size = ndlp->nlp_maxframe;
1463         rport->supported_classes = ndlp->nlp_class_sup;
1464         rdata = rport->dd_data;
1465         rdata->pnode = lpfc_nlp_get(ndlp);
1466
1467         if (ndlp->nlp_type & NLP_FCP_TARGET)
1468                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1469         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1470                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1471
1472
1473         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1474                 fc_remote_port_rolechg(rport, rport_ids.roles);
1475
1476         if ((rport->scsi_target_id != -1) &&
1477             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1478                 ndlp->nlp_sid = rport->scsi_target_id;
1479         }
1480         return;
1481 }
1482
1483 static void
1484 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1485 {
1486         struct fc_rport *rport = ndlp->rport;
1487
1488         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1489                 "rport delete:    did:x%x flg:x%x type x%x",
1490                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1491
1492         fc_remote_port_delete(rport);
1493
1494         return;
1495 }
1496
1497 static void
1498 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1499 {
1500         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1501
1502         spin_lock_irq(shost->host_lock);
1503         switch (state) {
1504         case NLP_STE_UNUSED_NODE:
1505                 vport->fc_unused_cnt += count;
1506                 break;
1507         case NLP_STE_PLOGI_ISSUE:
1508                 vport->fc_plogi_cnt += count;
1509                 break;
1510         case NLP_STE_ADISC_ISSUE:
1511                 vport->fc_adisc_cnt += count;
1512                 break;
1513         case NLP_STE_REG_LOGIN_ISSUE:
1514                 vport->fc_reglogin_cnt += count;
1515                 break;
1516         case NLP_STE_PRLI_ISSUE:
1517                 vport->fc_prli_cnt += count;
1518                 break;
1519         case NLP_STE_UNMAPPED_NODE:
1520                 vport->fc_unmap_cnt += count;
1521                 break;
1522         case NLP_STE_MAPPED_NODE:
1523                 vport->fc_map_cnt += count;
1524                 break;
1525         case NLP_STE_NPR_NODE:
1526                 vport->fc_npr_cnt += count;
1527                 break;
1528         }
1529         spin_unlock_irq(shost->host_lock);
1530 }
1531
1532 static void
1533 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1534                        int old_state, int new_state)
1535 {
1536         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1537
1538         if (new_state == NLP_STE_UNMAPPED_NODE) {
1539                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1540                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1541                 ndlp->nlp_type |= NLP_FC_NODE;
1542         }
1543         if (new_state == NLP_STE_MAPPED_NODE)
1544                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1545         if (new_state == NLP_STE_NPR_NODE)
1546                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1547
1548         /* Transport interface */
1549         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1550                             old_state == NLP_STE_UNMAPPED_NODE)) {
1551                 vport->phba->nport_event_cnt++;
1552                 lpfc_unregister_remote_port(ndlp);
1553         }
1554
1555         if (new_state ==  NLP_STE_MAPPED_NODE ||
1556             new_state == NLP_STE_UNMAPPED_NODE) {
1557                 vport->phba->nport_event_cnt++;
1558                 /*
1559                  * Tell the fc transport about the port, if we haven't
1560                  * already. If we have, and it's a scsi entity, be
1561                  * sure to unblock any attached scsi devices
1562                  */
1563                 lpfc_register_remote_port(vport, ndlp);
1564         }
1565         /*
1566          * if we added to Mapped list, but the remote port
1567          * registration failed or assigned a target id outside
1568          * our presentable range - move the node to the
1569          * Unmapped List
1570          */
1571         if (new_state == NLP_STE_MAPPED_NODE &&
1572             (!ndlp->rport ||
1573              ndlp->rport->scsi_target_id == -1 ||
1574              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1575                 spin_lock_irq(shost->host_lock);
1576                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1577                 spin_unlock_irq(shost->host_lock);
1578                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1579         }
1580 }
1581
1582 static char *
1583 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1584 {
1585         static char *states[] = {
1586                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1587                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1588                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1589                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1590                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1591                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1592                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1593                 [NLP_STE_NPR_NODE] = "NPR",
1594         };
1595
1596         if (state < NLP_STE_MAX_STATE && states[state])
1597                 strlcpy(buffer, states[state], size);
1598         else
1599                 snprintf(buffer, size, "unknown (%d)", state);
1600         return buffer;
1601 }
1602
1603 void
1604 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1605                    int state)
1606 {
1607         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1608         int  old_state = ndlp->nlp_state;
1609         char name1[16], name2[16];
1610
1611         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1612                          "0904 NPort state transition x%06x, %s -> %s\n",
1613                          ndlp->nlp_DID,
1614                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1615                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1616
1617         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1618                 "node statechg    did:x%x old:%d ste:%d",
1619                 ndlp->nlp_DID, old_state, state);
1620
1621         if (old_state == NLP_STE_NPR_NODE &&
1622             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1623             state != NLP_STE_NPR_NODE)
1624                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1625         if (old_state == NLP_STE_UNMAPPED_NODE) {
1626                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1627                 ndlp->nlp_type &= ~NLP_FC_NODE;
1628         }
1629
1630         if (list_empty(&ndlp->nlp_listp)) {
1631                 spin_lock_irq(shost->host_lock);
1632                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1633                 spin_unlock_irq(shost->host_lock);
1634         } else if (old_state)
1635                 lpfc_nlp_counters(vport, old_state, -1);
1636
1637         ndlp->nlp_state = state;
1638         lpfc_nlp_counters(vport, state, 1);
1639         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1640 }
1641
1642 void
1643 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1644 {
1645         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1646
1647         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1648                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1649         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1650                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1651         spin_lock_irq(shost->host_lock);
1652         list_del_init(&ndlp->nlp_listp);
1653         spin_unlock_irq(shost->host_lock);
1654         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1655                                NLP_STE_UNUSED_NODE);
1656 }
1657
1658 void
1659 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1660 {
1661         /*
1662          * Use of lpfc_drop_node and UNUSED list. lpfc_drop_node should
1663          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1664          * the ndlp from the vport.  The ndlp resides on the UNUSED list
1665          * until ALL other outstanding threads have completed. Thus, if a
1666          * ndlp is on the UNUSED list already, we should never do another
1667          * lpfc_drop_node() on it.
1668          */
1669         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1670         lpfc_nlp_put(ndlp);
1671         return;
1672 }
1673
1674 /*
1675  * Start / ReStart rescue timer for Discovery / RSCN handling
1676  */
1677 void
1678 lpfc_set_disctmo(struct lpfc_vport *vport)
1679 {
1680         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1681         struct lpfc_hba  *phba = vport->phba;
1682         uint32_t tmo;
1683
1684         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1685                 /* For FAN, timeout should be greater then edtov */
1686                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1687         } else {
1688                 /* Normal discovery timeout should be > then ELS/CT timeout
1689                  * FC spec states we need 3 * ratov for CT requests
1690                  */
1691                 tmo = ((phba->fc_ratov * 3) + 3);
1692         }
1693
1694
1695         if (!timer_pending(&vport->fc_disctmo)) {
1696                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1697                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1698                         tmo, vport->port_state, vport->fc_flag);
1699         }
1700
1701         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1702         spin_lock_irq(shost->host_lock);
1703         vport->fc_flag |= FC_DISC_TMO;
1704         spin_unlock_irq(shost->host_lock);
1705
1706         /* Start Discovery Timer state <hba_state> */
1707         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1708                          "0247 Start Discovery Timer state x%x "
1709                          "Data: x%x x%lx x%x x%x\n",
1710                          vport->port_state, tmo,
1711                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1712                          vport->fc_adisc_cnt);
1713
1714         return;
1715 }
1716
1717 /*
1718  * Cancel rescue timer for Discovery / RSCN handling
1719  */
1720 int
1721 lpfc_can_disctmo(struct lpfc_vport *vport)
1722 {
1723         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1724         unsigned long iflags;
1725
1726         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1727                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1728                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1729
1730         /* Turn off discovery timer if its running */
1731         if (vport->fc_flag & FC_DISC_TMO) {
1732                 spin_lock_irqsave(shost->host_lock, iflags);
1733                 vport->fc_flag &= ~FC_DISC_TMO;
1734                 spin_unlock_irqrestore(shost->host_lock, iflags);
1735                 del_timer_sync(&vport->fc_disctmo);
1736                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1737                 vport->work_port_events &= ~WORKER_DISC_TMO;
1738                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1739         }
1740
1741         /* Cancel Discovery Timer state <hba_state> */
1742         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1743                          "0248 Cancel Discovery Timer state x%x "
1744                          "Data: x%x x%x x%x\n",
1745                          vport->port_state, vport->fc_flag,
1746                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1747         return 0;
1748 }
1749
1750 /*
1751  * Check specified ring for outstanding IOCB on the SLI queue
1752  * Return true if iocb matches the specified nport
1753  */
1754 int
1755 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1756                     struct lpfc_sli_ring *pring,
1757                     struct lpfc_iocbq *iocb,
1758                     struct lpfc_nodelist *ndlp)
1759 {
1760         struct lpfc_sli *psli = &phba->sli;
1761         IOCB_t *icmd = &iocb->iocb;
1762         struct lpfc_vport    *vport = ndlp->vport;
1763
1764         if (iocb->vport != vport)
1765                 return 0;
1766
1767         if (pring->ringno == LPFC_ELS_RING) {
1768                 switch (icmd->ulpCommand) {
1769                 case CMD_GEN_REQUEST64_CR:
1770                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1771                                 return 1;
1772                 case CMD_ELS_REQUEST64_CR:
1773                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1774                                 return 1;
1775                 case CMD_XMIT_ELS_RSP64_CX:
1776                         if (iocb->context1 == (uint8_t *) ndlp)
1777                                 return 1;
1778                 }
1779         } else if (pring->ringno == psli->extra_ring) {
1780
1781         } else if (pring->ringno == psli->fcp_ring) {
1782                 /* Skip match check if waiting to relogin to FCP target */
1783                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1784                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1785                         return 0;
1786                 }
1787                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1788                         return 1;
1789                 }
1790         } else if (pring->ringno == psli->next_ring) {
1791
1792         }
1793         return 0;
1794 }
1795
1796 /*
1797  * Free resources / clean up outstanding I/Os
1798  * associated with nlp_rpi in the LPFC_NODELIST entry.
1799  */
1800 static int
1801 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1802 {
1803         LIST_HEAD(completions);
1804         struct lpfc_sli *psli;
1805         struct lpfc_sli_ring *pring;
1806         struct lpfc_iocbq *iocb, *next_iocb;
1807         IOCB_t *icmd;
1808         uint32_t rpi, i;
1809
1810         lpfc_fabric_abort_nport(ndlp);
1811
1812         /*
1813          * Everything that matches on txcmplq will be returned
1814          * by firmware with a no rpi error.
1815          */
1816         psli = &phba->sli;
1817         rpi = ndlp->nlp_rpi;
1818         if (rpi) {
1819                 /* Now process each ring */
1820                 for (i = 0; i < psli->num_rings; i++) {
1821                         pring = &psli->ring[i];
1822
1823                         spin_lock_irq(&phba->hbalock);
1824                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1825                                                  list) {
1826                                 /*
1827                                  * Check to see if iocb matches the nport we are
1828                                  * looking for
1829                                  */
1830                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1831                                                          ndlp))) {
1832                                         /* It matches, so deque and call compl
1833                                            with an error */
1834                                         list_move_tail(&iocb->list,
1835                                                        &completions);
1836                                         pring->txq_cnt--;
1837                                 }
1838                         }
1839                         spin_unlock_irq(&phba->hbalock);
1840                 }
1841         }
1842
1843         while (!list_empty(&completions)) {
1844                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1845                 list_del_init(&iocb->list);
1846
1847                 if (!iocb->iocb_cmpl)
1848                         lpfc_sli_release_iocbq(phba, iocb);
1849                 else {
1850                         icmd = &iocb->iocb;
1851                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1852                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1853                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1854                 }
1855         }
1856
1857         return 0;
1858 }
1859
1860 /*
1861  * Free rpi associated with LPFC_NODELIST entry.
1862  * This routine is called from lpfc_freenode(), when we are removing
1863  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1864  * LOGO that completes successfully, and we are waiting to PLOGI back
1865  * to the remote NPort. In addition, it is called after we receive
1866  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1867  * we are waiting to PLOGI back to the remote NPort.
1868  */
1869 int
1870 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1871 {
1872         struct lpfc_hba *phba = vport->phba;
1873         LPFC_MBOXQ_t    *mbox;
1874         int rc;
1875
1876         if (ndlp->nlp_rpi) {
1877                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1878                 if (mbox) {
1879                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1880                         mbox->vport = vport;
1881                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1882                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1883                         if (rc == MBX_NOT_FINISHED)
1884                                 mempool_free(mbox, phba->mbox_mem_pool);
1885                 }
1886                 lpfc_no_rpi(phba, ndlp);
1887                 ndlp->nlp_rpi = 0;
1888                 return 1;
1889         }
1890         return 0;
1891 }
1892
1893 void
1894 lpfc_unreg_all_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_login(phba, vport->vpi, 0xffff, 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                         mempool_free(mbox, phba->mbox_mem_pool);
1908                 }
1909         }
1910 }
1911
1912 void
1913 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1914 {
1915         struct lpfc_hba  *phba  = vport->phba;
1916         LPFC_MBOXQ_t     *mbox;
1917         int rc;
1918
1919         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1920         if (mbox) {
1921                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1922                 mbox->vport = vport;
1923                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1924                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1925                 if (rc == MBX_NOT_FINISHED) {
1926                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1927                                          "1815 Could not issue "
1928                                          "unreg_did (default rpis)\n");
1929                         mempool_free(mbox, phba->mbox_mem_pool);
1930                 }
1931         }
1932 }
1933
1934 /*
1935  * Free resources associated with LPFC_NODELIST entry
1936  * so it can be freed.
1937  */
1938 static int
1939 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1940 {
1941         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1942         struct lpfc_hba  *phba = vport->phba;
1943         LPFC_MBOXQ_t *mb, *nextmb;
1944         struct lpfc_dmabuf *mp;
1945
1946         /* Cleanup node for NPort <nlp_DID> */
1947         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1948                          "0900 Cleanup node for NPort x%x "
1949                          "Data: x%x x%x x%x\n",
1950                          ndlp->nlp_DID, ndlp->nlp_flag,
1951                          ndlp->nlp_state, ndlp->nlp_rpi);
1952         lpfc_dequeue_node(vport, ndlp);
1953
1954         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1955         if ((mb = phba->sli.mbox_active)) {
1956                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1957                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1958                         mb->context2 = NULL;
1959                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1960                 }
1961         }
1962
1963         spin_lock_irq(&phba->hbalock);
1964         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1965                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1966                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1967                         mp = (struct lpfc_dmabuf *) (mb->context1);
1968                         if (mp) {
1969                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1970                                 kfree(mp);
1971                         }
1972                         list_del(&mb->list);
1973                         mempool_free(mb, phba->mbox_mem_pool);
1974                         lpfc_nlp_put(ndlp);
1975                 }
1976         }
1977         spin_unlock_irq(&phba->hbalock);
1978
1979         lpfc_els_abort(phba,ndlp);
1980         spin_lock_irq(shost->host_lock);
1981         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1982         spin_unlock_irq(shost->host_lock);
1983
1984         ndlp->nlp_last_elscmd = 0;
1985         del_timer_sync(&ndlp->nlp_delayfunc);
1986
1987         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1988                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1989         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1990                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1991
1992         lpfc_unreg_rpi(vport, ndlp);
1993
1994         return 0;
1995 }
1996
1997 /*
1998  * Check to see if we can free the nlp back to the freelist.
1999  * If we are in the middle of using the nlp in the discovery state
2000  * machine, defer the free till we reach the end of the state machine.
2001  */
2002 static void
2003 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2004 {
2005         struct lpfc_hba  *phba = vport->phba;
2006         struct lpfc_rport_data *rdata;
2007         LPFC_MBOXQ_t *mbox;
2008         int rc;
2009
2010         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2011                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2012         }
2013
2014         if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2015                 /* For this case we need to cleanup the default rpi
2016                  * allocated by the firmware.
2017                  */
2018                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2019                         != NULL) {
2020                         rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2021                             (uint8_t *) &vport->fc_sparam, mbox, 0);
2022                         if (rc) {
2023                                 mempool_free(mbox, phba->mbox_mem_pool);
2024                         }
2025                         else {
2026                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2027                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2028                                 mbox->vport = vport;
2029                                 mbox->context2 = 0;
2030                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2031                                 if (rc == MBX_NOT_FINISHED) {
2032                                         mempool_free(mbox, phba->mbox_mem_pool);
2033                                 }
2034                         }
2035                 }
2036         }
2037
2038         lpfc_cleanup_node(vport, ndlp);
2039
2040         /*
2041          * We can get here with a non-NULL ndlp->rport because when we
2042          * unregister a rport we don't break the rport/node linkage.  So if we
2043          * do, make sure we don't leaving any dangling pointers behind.
2044          */
2045         if (ndlp->rport) {
2046                 rdata = ndlp->rport->dd_data;
2047                 rdata->pnode = NULL;
2048                 ndlp->rport = NULL;
2049         }
2050 }
2051
2052 static int
2053 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2054               uint32_t did)
2055 {
2056         D_ID mydid, ndlpdid, matchdid;
2057
2058         if (did == Bcast_DID)
2059                 return 0;
2060
2061         if (ndlp->nlp_DID == 0) {
2062                 return 0;
2063         }
2064
2065         /* First check for Direct match */
2066         if (ndlp->nlp_DID == did)
2067                 return 1;
2068
2069         /* Next check for area/domain identically equals 0 match */
2070         mydid.un.word = vport->fc_myDID;
2071         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2072                 return 0;
2073         }
2074
2075         matchdid.un.word = did;
2076         ndlpdid.un.word = ndlp->nlp_DID;
2077         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2078                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2079                     (mydid.un.b.area == matchdid.un.b.area)) {
2080                         if ((ndlpdid.un.b.domain == 0) &&
2081                             (ndlpdid.un.b.area == 0)) {
2082                                 if (ndlpdid.un.b.id)
2083                                         return 1;
2084                         }
2085                         return 0;
2086                 }
2087
2088                 matchdid.un.word = ndlp->nlp_DID;
2089                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2090                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2091                         if ((matchdid.un.b.domain == 0) &&
2092                             (matchdid.un.b.area == 0)) {
2093                                 if (matchdid.un.b.id)
2094                                         return 1;
2095                         }
2096                 }
2097         }
2098         return 0;
2099 }
2100
2101 /* Search for a nodelist entry */
2102 static struct lpfc_nodelist *
2103 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2104 {
2105         struct lpfc_nodelist *ndlp;
2106         uint32_t data1;
2107
2108         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2109                 if (lpfc_matchdid(vport, ndlp, did)) {
2110                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2111                                  ((uint32_t) ndlp->nlp_xri << 16) |
2112                                  ((uint32_t) ndlp->nlp_type << 8) |
2113                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2114                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2115                                          "0929 FIND node DID "
2116                                          "Data: x%p x%x x%x x%x\n",
2117                                          ndlp, ndlp->nlp_DID,
2118                                          ndlp->nlp_flag, data1);
2119                         return ndlp;
2120                 }
2121         }
2122
2123         /* FIND node did <did> NOT FOUND */
2124         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2125                          "0932 FIND node did x%x NOT FOUND.\n", did);
2126         return NULL;
2127 }
2128
2129 struct lpfc_nodelist *
2130 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2131 {
2132         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2133         struct lpfc_nodelist *ndlp;
2134
2135         spin_lock_irq(shost->host_lock);
2136         ndlp = __lpfc_findnode_did(vport, did);
2137         spin_unlock_irq(shost->host_lock);
2138         return ndlp;
2139 }
2140
2141 struct lpfc_nodelist *
2142 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2143 {
2144         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2145         struct lpfc_nodelist *ndlp;
2146
2147         ndlp = lpfc_findnode_did(vport, did);
2148         if (!ndlp) {
2149                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2150                     lpfc_rscn_payload_check(vport, did) == 0)
2151                         return NULL;
2152                 ndlp = (struct lpfc_nodelist *)
2153                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2154                 if (!ndlp)
2155                         return NULL;
2156                 lpfc_nlp_init(vport, ndlp, did);
2157                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2158                 spin_lock_irq(shost->host_lock);
2159                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2160                 spin_unlock_irq(shost->host_lock);
2161                 return ndlp;
2162         }
2163         if (vport->fc_flag & FC_RSCN_MODE) {
2164                 if (lpfc_rscn_payload_check(vport, did)) {
2165                         /* If we've already recieved a PLOGI from this NPort
2166                          * we don't need to try to discover it again.
2167                          */
2168                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2169                                 return NULL;
2170
2171                         spin_lock_irq(shost->host_lock);
2172                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2173                         spin_unlock_irq(shost->host_lock);
2174
2175                         /* Since this node is marked for discovery,
2176                          * delay timeout is not needed.
2177                          */
2178                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2179                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2180                 } else
2181                         ndlp = NULL;
2182         } else {
2183                 /* If we've already recieved a PLOGI from this NPort,
2184                  * or we are already in the process of discovery on it,
2185                  * we don't need to try to discover it again.
2186                  */
2187                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2188                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2189                     ndlp->nlp_flag & NLP_RCV_PLOGI)
2190                         return NULL;
2191                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2192                 spin_lock_irq(shost->host_lock);
2193                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2194                 spin_unlock_irq(shost->host_lock);
2195         }
2196         return ndlp;
2197 }
2198
2199 /* Build a list of nodes to discover based on the loopmap */
2200 void
2201 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2202 {
2203         struct lpfc_hba  *phba = vport->phba;
2204         int j;
2205         uint32_t alpa, index;
2206
2207         if (!lpfc_is_link_up(phba))
2208                 return;
2209
2210         if (phba->fc_topology != TOPOLOGY_LOOP)
2211                 return;
2212
2213         /* Check for loop map present or not */
2214         if (phba->alpa_map[0]) {
2215                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2216                         alpa = phba->alpa_map[j];
2217                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2218                                 continue;
2219                         lpfc_setup_disc_node(vport, alpa);
2220                 }
2221         } else {
2222                 /* No alpamap, so try all alpa's */
2223                 for (j = 0; j < FC_MAXLOOP; j++) {
2224                         /* If cfg_scan_down is set, start from highest
2225                          * ALPA (0xef) to lowest (0x1).
2226                          */
2227                         if (vport->cfg_scan_down)
2228                                 index = j;
2229                         else
2230                                 index = FC_MAXLOOP - j - 1;
2231                         alpa = lpfcAlpaArray[index];
2232                         if ((vport->fc_myDID & 0xff) == alpa)
2233                                 continue;
2234                         lpfc_setup_disc_node(vport, alpa);
2235                 }
2236         }
2237         return;
2238 }
2239
2240 void
2241 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2242 {
2243         LPFC_MBOXQ_t *mbox;
2244         struct lpfc_sli *psli = &phba->sli;
2245         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2246         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2247         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2248         int  rc;
2249
2250         /*
2251          * if it's not a physical port or if we already send
2252          * clear_la then don't send it.
2253          */
2254         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2255             (vport->port_type != LPFC_PHYSICAL_PORT))
2256                 return;
2257
2258                         /* Link up discovery */
2259         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2260                 phba->link_state = LPFC_CLEAR_LA;
2261                 lpfc_clear_la(phba, mbox);
2262                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2263                 mbox->vport = vport;
2264                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2265                 if (rc == MBX_NOT_FINISHED) {
2266                         mempool_free(mbox, phba->mbox_mem_pool);
2267                         lpfc_disc_flush_list(vport);
2268                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2269                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2270                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2271                         phba->link_state = LPFC_HBA_ERROR;
2272                 }
2273         }
2274 }
2275
2276 /* Reg_vpi to tell firmware to resume normal operations */
2277 void
2278 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2279 {
2280         LPFC_MBOXQ_t *regvpimbox;
2281
2282         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2283         if (regvpimbox) {
2284                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2285                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2286                 regvpimbox->vport = vport;
2287                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2288                                         == MBX_NOT_FINISHED) {
2289                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2290                 }
2291         }
2292 }
2293
2294 /* Start Link up / RSCN discovery on NPR nodes */
2295 void
2296 lpfc_disc_start(struct lpfc_vport *vport)
2297 {
2298         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2299         struct lpfc_hba  *phba = vport->phba;
2300         uint32_t num_sent;
2301         uint32_t clear_la_pending;
2302         int did_changed;
2303
2304         if (!lpfc_is_link_up(phba))
2305                 return;
2306
2307         if (phba->link_state == LPFC_CLEAR_LA)
2308                 clear_la_pending = 1;
2309         else
2310                 clear_la_pending = 0;
2311
2312         if (vport->port_state < LPFC_VPORT_READY)
2313                 vport->port_state = LPFC_DISC_AUTH;
2314
2315         lpfc_set_disctmo(vport);
2316
2317         if (vport->fc_prevDID == vport->fc_myDID)
2318                 did_changed = 0;
2319         else
2320                 did_changed = 1;
2321
2322         vport->fc_prevDID = vport->fc_myDID;
2323         vport->num_disc_nodes = 0;
2324
2325         /* Start Discovery state <hba_state> */
2326         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2327                          "0202 Start Discovery hba state x%x "
2328                          "Data: x%x x%x x%x\n",
2329                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2330                          vport->fc_adisc_cnt);
2331
2332         /* First do ADISCs - if any */
2333         num_sent = lpfc_els_disc_adisc(vport);
2334
2335         if (num_sent)
2336                 return;
2337
2338         /*
2339          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2340          * continue discovery.
2341          */
2342         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2343             !(vport->fc_flag & FC_RSCN_MODE)) {
2344                 lpfc_issue_reg_vpi(phba, vport);
2345                 return;
2346         }
2347
2348         /*
2349          * For SLI2, we need to set port_state to READY and continue
2350          * discovery.
2351          */
2352         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2353                 /* If we get here, there is nothing to ADISC */
2354                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2355                         lpfc_issue_clear_la(phba, vport);
2356
2357                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2358                         vport->num_disc_nodes = 0;
2359                         /* go thru NPR nodes and issue ELS PLOGIs */
2360                         if (vport->fc_npr_cnt)
2361                                 lpfc_els_disc_plogi(vport);
2362
2363                         if (!vport->num_disc_nodes) {
2364                                 spin_lock_irq(shost->host_lock);
2365                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2366                                 spin_unlock_irq(shost->host_lock);
2367                                 lpfc_can_disctmo(vport);
2368                         }
2369                 }
2370                 vport->port_state = LPFC_VPORT_READY;
2371         } else {
2372                 /* Next do PLOGIs - if any */
2373                 num_sent = lpfc_els_disc_plogi(vport);
2374
2375                 if (num_sent)
2376                         return;
2377
2378                 if (vport->fc_flag & FC_RSCN_MODE) {
2379                         /* Check to see if more RSCNs came in while we
2380                          * were processing this one.
2381                          */
2382                         if ((vport->fc_rscn_id_cnt == 0) &&
2383                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2384                                 spin_lock_irq(shost->host_lock);
2385                                 vport->fc_flag &= ~FC_RSCN_MODE;
2386                                 spin_unlock_irq(shost->host_lock);
2387                                 lpfc_can_disctmo(vport);
2388                         } else
2389                                 lpfc_els_handle_rscn(vport);
2390                 }
2391         }
2392         return;
2393 }
2394
2395 /*
2396  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2397  *  ring the match the sppecified nodelist.
2398  */
2399 static void
2400 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2401 {
2402         LIST_HEAD(completions);
2403         struct lpfc_sli *psli;
2404         IOCB_t     *icmd;
2405         struct lpfc_iocbq    *iocb, *next_iocb;
2406         struct lpfc_sli_ring *pring;
2407
2408         psli = &phba->sli;
2409         pring = &psli->ring[LPFC_ELS_RING];
2410
2411         /* Error matching iocb on txq or txcmplq
2412          * First check the txq.
2413          */
2414         spin_lock_irq(&phba->hbalock);
2415         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2416                 if (iocb->context1 != ndlp) {
2417                         continue;
2418                 }
2419                 icmd = &iocb->iocb;
2420                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2421                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2422
2423                         list_move_tail(&iocb->list, &completions);
2424                         pring->txq_cnt--;
2425                 }
2426         }
2427
2428         /* Next check the txcmplq */
2429         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2430                 if (iocb->context1 != ndlp) {
2431                         continue;
2432                 }
2433                 icmd = &iocb->iocb;
2434                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2435                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2436                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2437                 }
2438         }
2439         spin_unlock_irq(&phba->hbalock);
2440
2441         while (!list_empty(&completions)) {
2442                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2443                 list_del_init(&iocb->list);
2444
2445                 if (!iocb->iocb_cmpl)
2446                         lpfc_sli_release_iocbq(phba, iocb);
2447                 else {
2448                         icmd = &iocb->iocb;
2449                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2450                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2451                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2452                 }
2453         }
2454 }
2455
2456 static void
2457 lpfc_disc_flush_list(struct lpfc_vport *vport)
2458 {
2459         struct lpfc_nodelist *ndlp, *next_ndlp;
2460         struct lpfc_hba *phba = vport->phba;
2461
2462         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2463                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2464                                          nlp_listp) {
2465                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2466                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2467                                 lpfc_free_tx(phba, ndlp);
2468                         }
2469                 }
2470         }
2471 }
2472
2473 void
2474 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2475 {
2476         lpfc_els_flush_rscn(vport);
2477         lpfc_els_flush_cmd(vport);
2478         lpfc_disc_flush_list(vport);
2479 }
2480
2481 /*****************************************************************************/
2482 /*
2483  * NAME:     lpfc_disc_timeout
2484  *
2485  * FUNCTION: Fibre Channel driver discovery timeout routine.
2486  *
2487  * EXECUTION ENVIRONMENT: interrupt only
2488  *
2489  * CALLED FROM:
2490  *      Timer function
2491  *
2492  * RETURNS:
2493  *      none
2494  */
2495 /*****************************************************************************/
2496 void
2497 lpfc_disc_timeout(unsigned long ptr)
2498 {
2499         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2500         struct lpfc_hba   *phba = vport->phba;
2501         unsigned long flags = 0;
2502
2503         if (unlikely(!phba))
2504                 return;
2505
2506         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2507                 spin_lock_irqsave(&vport->work_port_lock, flags);
2508                 vport->work_port_events |= WORKER_DISC_TMO;
2509                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2510
2511                 spin_lock_irqsave(&phba->hbalock, flags);
2512                 if (phba->work_wait)
2513                         lpfc_worker_wake_up(phba);
2514                 spin_unlock_irqrestore(&phba->hbalock, flags);
2515         }
2516         return;
2517 }
2518
2519 static void
2520 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2521 {
2522         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2523         struct lpfc_hba  *phba = vport->phba;
2524         struct lpfc_sli  *psli = &phba->sli;
2525         struct lpfc_nodelist *ndlp, *next_ndlp;
2526         LPFC_MBOXQ_t *initlinkmbox;
2527         int rc, clrlaerr = 0;
2528
2529         if (!(vport->fc_flag & FC_DISC_TMO))
2530                 return;
2531
2532         spin_lock_irq(shost->host_lock);
2533         vport->fc_flag &= ~FC_DISC_TMO;
2534         spin_unlock_irq(shost->host_lock);
2535
2536         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2537                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2538                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2539
2540         switch (vport->port_state) {
2541
2542         case LPFC_LOCAL_CFG_LINK:
2543         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2544          * FAN
2545          */
2546                                 /* FAN timeout */
2547                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2548                                  "0221 FAN timeout\n");
2549                 /* Start discovery by sending FLOGI, clean up old rpis */
2550                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2551                                          nlp_listp) {
2552                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2553                                 continue;
2554                         if (ndlp->nlp_type & NLP_FABRIC) {
2555                                 /* Clean up the ndlp on Fabric connections */
2556                                 lpfc_drop_node(vport, ndlp);
2557
2558                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2559                                 /* Fail outstanding IO now since device
2560                                  * is marked for PLOGI.
2561                                  */
2562                                 lpfc_unreg_rpi(vport, ndlp);
2563                         }
2564                 }
2565                 if (vport->port_state != LPFC_FLOGI) {
2566                         lpfc_initial_flogi(vport);
2567                 }
2568                 break;
2569
2570         case LPFC_FDISC:
2571         case LPFC_FLOGI:
2572         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2573                 /* Initial FLOGI timeout */
2574                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2575                                  "0222 Initial %s timeout\n",
2576                                  vport->vpi ? "FDISC" : "FLOGI");
2577
2578                 /* Assume no Fabric and go on with discovery.
2579                  * Check for outstanding ELS FLOGI to abort.
2580                  */
2581
2582                 /* FLOGI failed, so just use loop map to make discovery list */
2583                 lpfc_disc_list_loopmap(vport);
2584
2585                 /* Start discovery */
2586                 lpfc_disc_start(vport);
2587                 break;
2588
2589         case LPFC_FABRIC_CFG_LINK:
2590         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2591            NameServer login */
2592                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2593                                  "0223 Timeout while waiting for "
2594                                  "NameServer login\n");
2595                 /* Next look for NameServer ndlp */
2596                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2597                 if (ndlp)
2598                         lpfc_els_abort(phba, ndlp);
2599
2600                 /* ReStart discovery */
2601                 goto restart_disc;
2602
2603         case LPFC_NS_QRY:
2604         /* Check for wait for NameServer Rsp timeout */
2605                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2606                                  "0224 NameServer Query timeout "
2607                                  "Data: x%x x%x\n",
2608                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2609
2610                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2611                         /* Try it one more time */
2612                         vport->fc_ns_retry++;
2613                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2614                                          vport->fc_ns_retry, 0);
2615                         if (rc == 0)
2616                                 break;
2617                 }
2618                 vport->fc_ns_retry = 0;
2619
2620 restart_disc:
2621                 /*
2622                  * Discovery is over.
2623                  * set port_state to PORT_READY if SLI2.
2624                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2625                  */
2626                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2627                         lpfc_issue_reg_vpi(phba, vport);
2628                 else  { /* NPIV Not enabled */
2629                         lpfc_issue_clear_la(phba, vport);
2630                         vport->port_state = LPFC_VPORT_READY;
2631                 }
2632
2633                 /* Setup and issue mailbox INITIALIZE LINK command */
2634                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2635                 if (!initlinkmbox) {
2636                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2637                                          "0206 Device Discovery "
2638                                          "completion error\n");
2639                         phba->link_state = LPFC_HBA_ERROR;
2640                         break;
2641                 }
2642
2643                 lpfc_linkdown(phba);
2644                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2645                                phba->cfg_link_speed);
2646                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2647                 initlinkmbox->vport = vport;
2648                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2649                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2650                 lpfc_set_loopback_flag(phba);
2651                 if (rc == MBX_NOT_FINISHED)
2652                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2653
2654                 break;
2655
2656         case LPFC_DISC_AUTH:
2657         /* Node Authentication timeout */
2658                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2659                                  "0227 Node Authentication timeout\n");
2660                 lpfc_disc_flush_list(vport);
2661
2662                 /*
2663                  * set port_state to PORT_READY if SLI2.
2664                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2665                  */
2666                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2667                         lpfc_issue_reg_vpi(phba, vport);
2668                 else {  /* NPIV Not enabled */
2669                         lpfc_issue_clear_la(phba, vport);
2670                         vport->port_state = LPFC_VPORT_READY;
2671                 }
2672                 break;
2673
2674         case LPFC_VPORT_READY:
2675                 if (vport->fc_flag & FC_RSCN_MODE) {
2676                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2677                                          "0231 RSCN timeout Data: x%x "
2678                                          "x%x\n",
2679                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2680
2681                         /* Cleanup any outstanding ELS commands */
2682                         lpfc_els_flush_cmd(vport);
2683
2684                         lpfc_els_flush_rscn(vport);
2685                         lpfc_disc_flush_list(vport);
2686                 }
2687                 break;
2688
2689         default:
2690                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2691                                  "0229 Unexpected discovery timeout, "
2692                                  "vport State x%x\n", vport->port_state);
2693                 break;
2694         }
2695
2696         switch (phba->link_state) {
2697         case LPFC_CLEAR_LA:
2698                                 /* CLEAR LA timeout */
2699                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2700                                  "0228 CLEAR LA timeout\n");
2701                 clrlaerr = 1;
2702                 break;
2703
2704         case LPFC_LINK_UNKNOWN:
2705         case LPFC_WARM_START:
2706         case LPFC_INIT_START:
2707         case LPFC_INIT_MBX_CMDS:
2708         case LPFC_LINK_DOWN:
2709         case LPFC_LINK_UP:
2710         case LPFC_HBA_ERROR:
2711                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2712                                  "0230 Unexpected timeout, hba link "
2713                                  "state x%x\n", phba->link_state);
2714                 clrlaerr = 1;
2715                 break;
2716
2717         case LPFC_HBA_READY:
2718                 break;
2719         }
2720
2721         if (clrlaerr) {
2722                 lpfc_disc_flush_list(vport);
2723                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2724                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2725                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2726                 vport->port_state = LPFC_VPORT_READY;
2727         }
2728
2729         return;
2730 }
2731
2732 /*
2733  * This routine handles processing a NameServer REG_LOGIN mailbox
2734  * command upon completion. It is setup in the LPFC_MBOXQ
2735  * as the completion routine when the command is
2736  * handed off to the SLI layer.
2737  */
2738 void
2739 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2740 {
2741         MAILBOX_t *mb = &pmb->mb;
2742         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2743         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2744         struct lpfc_vport    *vport = pmb->vport;
2745
2746         pmb->context1 = NULL;
2747
2748         ndlp->nlp_rpi = mb->un.varWords[0];
2749         ndlp->nlp_type |= NLP_FABRIC;
2750         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2751
2752         /*
2753          * Start issuing Fabric-Device Management Interface (FDMI) command to
2754          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2755          * fdmi-on=2 (supporting RPA/hostnmae)
2756          */
2757
2758         if (vport->cfg_fdmi_on == 1)
2759                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2760         else
2761                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2762
2763                                 /* Mailbox took a reference to the node */
2764         lpfc_nlp_put(ndlp);
2765         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2766         kfree(mp);
2767         mempool_free(pmb, phba->mbox_mem_pool);
2768
2769         return;
2770 }
2771
2772 static int
2773 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2774 {
2775         uint16_t *rpi = param;
2776
2777         return ndlp->nlp_rpi == *rpi;
2778 }
2779
2780 static int
2781 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2782 {
2783         return memcmp(&ndlp->nlp_portname, param,
2784                       sizeof(ndlp->nlp_portname)) == 0;
2785 }
2786
2787 static struct lpfc_nodelist *
2788 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2789 {
2790         struct lpfc_nodelist *ndlp;
2791
2792         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2793                 if (filter(ndlp, param))
2794                         return ndlp;
2795         }
2796         return NULL;
2797 }
2798
2799 #if 0
2800 /*
2801  * Search node lists for a remote port matching filter criteria
2802  * Caller needs to hold host_lock before calling this routine.
2803  */
2804 struct lpfc_nodelist *
2805 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2806 {
2807         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2808         struct lpfc_nodelist *ndlp;
2809
2810         spin_lock_irq(shost->host_lock);
2811         ndlp = __lpfc_find_node(vport, filter, param);
2812         spin_unlock_irq(shost->host_lock);
2813         return ndlp;
2814 }
2815 #endif  /*  0  */
2816
2817 /*
2818  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2819  * returns the node list element pointer else return NULL.
2820  */
2821 struct lpfc_nodelist *
2822 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2823 {
2824         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2825 }
2826
2827 #if 0
2828 struct lpfc_nodelist *
2829 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2830 {
2831         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2832         struct lpfc_nodelist *ndlp;
2833
2834         spin_lock_irq(shost->host_lock);
2835         ndlp = __lpfc_findnode_rpi(vport, rpi);
2836         spin_unlock_irq(shost->host_lock);
2837         return ndlp;
2838 }
2839 #endif  /*  0  */
2840
2841 /*
2842  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2843  * returns the node element list pointer else return NULL.
2844  */
2845 struct lpfc_nodelist *
2846 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2847 {
2848         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2849         struct lpfc_nodelist *ndlp;
2850
2851         spin_lock_irq(shost->host_lock);
2852         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2853         spin_unlock_irq(shost->host_lock);
2854         return ndlp;
2855 }
2856
2857 void
2858 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2859               uint32_t did)
2860 {
2861         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2862         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2863         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2864         init_timer(&ndlp->nlp_delayfunc);
2865         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2866         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2867         ndlp->nlp_DID = did;
2868         ndlp->vport = vport;
2869         ndlp->nlp_sid = NLP_NO_SID;
2870         INIT_LIST_HEAD(&ndlp->nlp_listp);
2871         kref_init(&ndlp->kref);
2872
2873         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2874                 "node init:       did:x%x",
2875                 ndlp->nlp_DID, 0, 0);
2876
2877         return;
2878 }
2879
2880 /* This routine releases all resources associated with a specifc NPort's ndlp
2881  * and mempool_free's the nodelist.
2882  */
2883 static void
2884 lpfc_nlp_release(struct kref *kref)
2885 {
2886         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2887                                                   kref);
2888
2889         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2890                 "node release:    did:x%x flg:x%x type:x%x",
2891                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2892
2893         lpfc_nlp_remove(ndlp->vport, ndlp);
2894         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2895 }
2896
2897 /* This routine bumps the reference count for a ndlp structure to ensure
2898  * that one discovery thread won't free a ndlp while another discovery thread
2899  * is using it.
2900  */
2901 struct lpfc_nodelist *
2902 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2903 {
2904         if (ndlp) {
2905                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2906                         "node get:        did:x%x flg:x%x refcnt:x%x",
2907                         ndlp->nlp_DID, ndlp->nlp_flag,
2908                         atomic_read(&ndlp->kref.refcount));
2909                 kref_get(&ndlp->kref);
2910         }
2911         return ndlp;
2912 }
2913
2914
2915 /* This routine decrements the reference count for a ndlp structure. If the
2916  * count goes to 0, this indicates the the associated nodelist should be freed.
2917  */
2918 int
2919 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2920 {
2921         if (ndlp) {
2922                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2923                 "node put:        did:x%x flg:x%x refcnt:x%x",
2924                         ndlp->nlp_DID, ndlp->nlp_flag,
2925                         atomic_read(&ndlp->kref.refcount));
2926         }
2927         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2928 }
2929
2930 /* This routine free's the specified nodelist if it is not in use
2931  * by any other discovery thread. This routine returns 1 if the ndlp
2932  * is not being used by anyone and has been freed. A return value of
2933  * 0 indicates it is being used by another discovery thread and the
2934  * refcount is left unchanged.
2935  */
2936 int
2937 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
2938 {
2939         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2940                 "node not used:   did:x%x flg:x%x refcnt:x%x",
2941                 ndlp->nlp_DID, ndlp->nlp_flag,
2942                 atomic_read(&ndlp->kref.refcount));
2943
2944         if (atomic_read(&ndlp->kref.refcount) == 1) {
2945                 lpfc_nlp_put(ndlp);
2946                 return 1;
2947         }
2948         return 0;
2949 }
2950