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         if (!ndlp)
 118                 return;
 119
 120         vport = ndlp->vport;
 121         phba  = vport->phba;
 122
 123         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 124                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 125                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 126
 127         /* Don't defer this if we are in the process of deleting the vport
 128          * or unloading the driver. The unload will cleanup the node
 129          * appropriately we just need to cleanup the ndlp rport info here.
 130          */
 131         if (vport->load_flag & FC_UNLOADING) {
 132                 put_node = rdata->pnode != NULL;
 133                 put_rport = ndlp->rport != NULL;
 134                 rdata->pnode = NULL;
 135                 ndlp->rport = NULL;
 136                 if (put_node)
 137                         lpfc_nlp_put(ndlp);
 138                 if (put_rport)
 139                         put_device(&rport->dev);
 140                 return;
 141         }
 142
 143         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 144                 return;
 145
 146         evtp = &ndlp->dev_loss_evt;
 147
 148         if (!list_empty(&evtp->evt_listp))
 149                 return;
 150
 151         spin_lock_irq(&phba->hbalock);
 152         evtp->evt_arg1  = ndlp;
 153         evtp->evt       = LPFC_EVT_DEV_LOSS;
 154         list_add_tail(&evtp->evt_listp, &phba->work_list);
 155         if (phba->work_wait)
 156                 wake_up(phba->work_wait);
 157
 158         spin_unlock_irq(&phba->hbalock);
 159
 160         return;
 161 }
 162
 163 /*
 164  * This function is called from the worker thread when dev_loss_tmo
 165  * expire.
 166  */
 167 static void
 168 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 169 {
 170         struct lpfc_rport_data *rdata;
 171         struct fc_rport   *rport;
 172         struct lpfc_vport *vport;
 173         struct lpfc_hba   *phba;
 174         uint8_t *name;
 175         int  put_node;
 176         int  put_rport;
 177         int warn_on = 0;
 178
 179         rport = ndlp->rport;
 180
 181         if (!rport)
 182                 return;
 183
 184         rdata = rport->dd_data;
 185         name = (uint8_t *) &ndlp->nlp_portname;
 186         vport = ndlp->vport;
 187         phba  = vport->phba;
 188
 189         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 190                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 191                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 192
 193         /* Don't defer this if we are in the process of deleting the vport
 194          * or unloading the driver. The unload will cleanup the node
 195          * appropriately we just need to cleanup the ndlp rport info here.
 196          */
 197         if (vport->load_flag & FC_UNLOADING) {
 198                 if (ndlp->nlp_sid != NLP_NO_SID) {
 199                         /* flush the target */
 200                         lpfc_sli_abort_iocb(vport,
 201                                         &phba->sli.ring[phba->sli.fcp_ring],
 202                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 203                 }
 204                 put_node = rdata->pnode != NULL;
 205                 put_rport = ndlp->rport != NULL;
 206                 rdata->pnode = NULL;
 207                 ndlp->rport = NULL;
 208                 if (put_node)
 209                         lpfc_nlp_put(ndlp);
 210                 if (put_rport)
 211                         put_device(&rport->dev);
 212                 return;
 213         }
 214
 215         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 216                 return;
 217
 218         if (ndlp->nlp_type & NLP_FABRIC) {
 219                 /* We will clean up these Nodes in linkup */
 220                 put_node = rdata->pnode != NULL;
 221                 put_rport = ndlp->rport != NULL;
 222                 rdata->pnode = NULL;
 223                 ndlp->rport = NULL;
 224                 if (put_node)
 225                         lpfc_nlp_put(ndlp);
 226                 if (put_rport)
 227                         put_device(&rport->dev);
 228                 return;
 229         }
 230
 231         if (ndlp->nlp_sid != NLP_NO_SID) {
 232                 warn_on = 1;
 233                 /* flush the target */
 234                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 235                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 236         }
 237         if (vport->load_flag & FC_UNLOADING)
 238                 warn_on = 0;
 239
 240         if (warn_on) {
 241                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 242                                  "0203 Devloss timeout on "
 243                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 244                                  "NPort x%x Data: x%x x%x x%x\n",
 245                                  *name, *(name+1), *(name+2), *(name+3),
 246                                  *(name+4), *(name+5), *(name+6), *(name+7),
 247                                  ndlp->nlp_DID, ndlp->nlp_flag,
 248                                  ndlp->nlp_state, ndlp->nlp_rpi);
 249         } else {
 250                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 251                                  "0204 Devloss timeout on "
 252                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 253                                  "NPort x%x Data: x%x x%x x%x\n",
 254                                  *name, *(name+1), *(name+2), *(name+3),
 255                                  *(name+4), *(name+5), *(name+6), *(name+7),
 256                                  ndlp->nlp_DID, ndlp->nlp_flag,
 257                                  ndlp->nlp_state, ndlp->nlp_rpi);
 258         }
 259
 260         put_node = rdata->pnode != NULL;
 261         put_rport = ndlp->rport != NULL;
 262         rdata->pnode = NULL;
 263         ndlp->rport = NULL;
 264         if (put_node)
 265                 lpfc_nlp_put(ndlp);
 266         if (put_rport)
 267                 put_device(&rport->dev);
 268
 269         if (!(vport->load_flag & FC_UNLOADING) &&
 270             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 271             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 272             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) {
 273                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 274         }
 275 }
 276
 277
 278 void
 279 lpfc_worker_wake_up(struct lpfc_hba *phba)
 280 {
 281         wake_up(phba->work_wait);
 282         return;
 283 }
 284
 285 static void
 286 lpfc_work_list_done(struct lpfc_hba *phba)
 287 {
 288         struct lpfc_work_evt  *evtp = NULL;
 289         struct lpfc_nodelist  *ndlp;
 290         int free_evt;
 291
 292         spin_lock_irq(&phba->hbalock);
 293         while (!list_empty(&phba->work_list)) {
 294                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 295                                  evt_listp);
 296                 spin_unlock_irq(&phba->hbalock);
 297                 free_evt = 1;
 298                 switch (evtp->evt) {
 299                 case LPFC_EVT_ELS_RETRY:
 300                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 301                         lpfc_els_retry_delay_handler(ndlp);
 302                         free_evt = 0; /* evt is part of ndlp */
 303                         break;
 304                 case LPFC_EVT_DEV_LOSS:
 305                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 306                         lpfc_nlp_get(ndlp);
 307                         lpfc_dev_loss_tmo_handler(ndlp);
 308                         free_evt = 0;
 309                         lpfc_nlp_put(ndlp);
 310                         break;
 311                 case LPFC_EVT_ONLINE:
 312                         if (phba->link_state < LPFC_LINK_DOWN)
 313                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 314                         else
 315                                 *(int *) (evtp->evt_arg1) = 0;
 316                         complete((struct completion *)(evtp->evt_arg2));
 317                         break;
 318                 case LPFC_EVT_OFFLINE_PREP:
 319                         if (phba->link_state >= LPFC_LINK_DOWN)
 320                                 lpfc_offline_prep(phba);
 321                         *(int *)(evtp->evt_arg1) = 0;
 322                         complete((struct completion *)(evtp->evt_arg2));
 323                         break;
 324                 case LPFC_EVT_OFFLINE:
 325                         lpfc_offline(phba);
 326                         lpfc_sli_brdrestart(phba);
 327                         *(int *)(evtp->evt_arg1) =
 328                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 329                         lpfc_unblock_mgmt_io(phba);
 330                         complete((struct completion *)(evtp->evt_arg2));
 331                         break;
 332                 case LPFC_EVT_WARM_START:
 333                         lpfc_offline(phba);
 334                         lpfc_reset_barrier(phba);
 335                         lpfc_sli_brdreset(phba);
 336                         lpfc_hba_down_post(phba);
 337                         *(int *)(evtp->evt_arg1) =
 338                                 lpfc_sli_brdready(phba, HS_MBRDY);
 339                         lpfc_unblock_mgmt_io(phba);
 340                         complete((struct completion *)(evtp->evt_arg2));
 341                         break;
 342                 case LPFC_EVT_KILL:
 343                         lpfc_offline(phba);
 344                         *(int *)(evtp->evt_arg1)
 345                                 = (phba->pport->stopped)
 346                                         ? 0 : lpfc_sli_brdkill(phba);
 347                         lpfc_unblock_mgmt_io(phba);
 348                         complete((struct completion *)(evtp->evt_arg2));
 349                         break;
 350                 }
 351                 if (free_evt)
 352                         kfree(evtp);
 353                 spin_lock_irq(&phba->hbalock);
 354         }
 355         spin_unlock_irq(&phba->hbalock);
 356
 357 }
 358
 359 static void
 360 lpfc_work_done(struct lpfc_hba *phba)
 361 {
 362         struct lpfc_sli_ring *pring;
 363         uint32_t ha_copy, status, control, work_port_events;
 364         struct lpfc_vport **vports;
 365         struct lpfc_vport *vport;
 366         int i;
 367
 368         spin_lock_irq(&phba->hbalock);
 369         ha_copy = phba->work_ha;
 370         phba->work_ha = 0;
 371         spin_unlock_irq(&phba->hbalock);
 372
 373         if (ha_copy & HA_ERATT)
 374                 lpfc_handle_eratt(phba);
 375
 376         if (ha_copy & HA_MBATT)
 377                 lpfc_sli_handle_mb_event(phba);
 378
 379         if (ha_copy & HA_LATT)
 380                 lpfc_handle_latt(phba);
 381         vports = lpfc_create_vport_work_array(phba);
 382         if (vports != NULL)
 383                 for(i = 0; i <= phba->max_vpi; i++) {
 384                         /*
 385                          * We could have no vports in array if unloading, so if
 386                          * this happens then just use the pport
 387                          */
 388                         if (vports[i] == NULL && i == 0)
 389                                 vport = phba->pport;
 390                         else
 391                                 vport = vports[i];
 392                         if (vport == NULL)
 393                                 break;
 394                         work_port_events = vport->work_port_events;
 395                         if (work_port_events & WORKER_DISC_TMO)
 396                                 lpfc_disc_timeout_handler(vport);
 397                         if (work_port_events & WORKER_ELS_TMO)
 398                                 lpfc_els_timeout_handler(vport);
 399                         if (work_port_events & WORKER_HB_TMO)
 400                                 lpfc_hb_timeout_handler(phba);
 401                         if (work_port_events & WORKER_MBOX_TMO)
 402                                 lpfc_mbox_timeout_handler(phba);
 403                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 404                                 lpfc_unblock_fabric_iocbs(phba);
 405                         if (work_port_events & WORKER_FDMI_TMO)
 406                                 lpfc_fdmi_timeout_handler(vport);
 407                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 408                                 lpfc_ramp_down_queue_handler(phba);
 409                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 410                                 lpfc_ramp_up_queue_handler(phba);
 411                         spin_lock_irq(&vport->work_port_lock);
 412                         vport->work_port_events &= ~work_port_events;
 413                         spin_unlock_irq(&vport->work_port_lock);
 414                 }
 415         lpfc_destroy_vport_work_array(phba, vports);
 416
 417         pring = &phba->sli.ring[LPFC_ELS_RING];
 418         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 419         status >>= (4*LPFC_ELS_RING);
 420         if ((status & HA_RXMASK)
 421                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 422                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 423                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 424                 } else {
 425                         lpfc_sli_handle_slow_ring_event(phba, pring,
 426                                                         (status &
 427                                                          HA_RXMASK));
 428                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 429                 }
 430                 /*
 431                  * Turn on Ring interrupts
 432                  */
 433                 spin_lock_irq(&phba->hbalock);
 434                 control = readl(phba->HCregaddr);
 435                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 436                         lpfc_debugfs_slow_ring_trc(phba,
 437                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 438                                 control, ha_copy, 0);
 439
 440                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 441                         writel(control, phba->HCregaddr);
 442                         readl(phba->HCregaddr); /* flush */
 443                 }
 444                 else {
 445                         lpfc_debugfs_slow_ring_trc(phba,
 446                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 447                                 control, ha_copy, 0);
 448                 }
 449                 spin_unlock_irq(&phba->hbalock);
 450         }
 451         lpfc_work_list_done(phba);
 452 }
 453
 454 static int
 455 check_work_wait_done(struct lpfc_hba *phba)
 456 {
 457         struct lpfc_vport *vport;
 458         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 459         int rc = 0;
 460
 461         spin_lock_irq(&phba->hbalock);
 462         list_for_each_entry(vport, &phba->port_list, listentry) {
 463                 if (vport->work_port_events) {
 464                         rc = 1;
 465                         break;
 466                 }
 467         }
 468         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 469             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 470                 rc = 1;
 471                 phba->work_found++;
 472         } else
 473                 phba->work_found = 0;
 474         spin_unlock_irq(&phba->hbalock);
 475         return rc;
 476 }
 477
 478
 479 int
 480 lpfc_do_work(void *p)
 481 {
 482         struct lpfc_hba *phba = p;
 483         int rc;
 484         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 485
 486         set_user_nice(current, -20);
 487         phba->work_wait = &work_waitq;
 488         phba->work_found = 0;
 489
 490         while (1) {
 491
 492                 rc = wait_event_interruptible(work_waitq,
 493                                               check_work_wait_done(phba));
 494
 495                 BUG_ON(rc);
 496
 497                 if (kthread_should_stop())
 498                         break;
 499
 500                 lpfc_work_done(phba);
 501
 502                 /* If there is alot of slow ring work, like during link up
 503                  * check_work_wait_done() may cause this thread to not give
 504                  * up the CPU for very long periods of time. This may cause
 505                  * soft lockups or other problems. To avoid these situations
 506                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 507                  * consecutive iterations.
 508                  */
 509                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 510                         phba->work_found = 0;
 511                         schedule();
 512                 }
 513         }
 514         phba->work_wait = NULL;
 515         return 0;
 516 }
 517
 518 /*
 519  * This is only called to handle FC worker events. Since this a rare
 520  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 521  * embedding it in the IOCB.
 522  */
 523 int
 524 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 525                       uint32_t evt)
 526 {
 527         struct lpfc_work_evt  *evtp;
 528         unsigned long flags;
 529
 530         /*
 531          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 532          * be queued to worker thread for processing
 533          */
 534         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 535         if (!evtp)
 536                 return 0;
 537
 538         evtp->evt_arg1  = arg1;
 539         evtp->evt_arg2  = arg2;
 540         evtp->evt       = evt;
 541
 542         spin_lock_irqsave(&phba->hbalock, flags);
 543         list_add_tail(&evtp->evt_listp, &phba->work_list);
 544         if (phba->work_wait)
 545                 lpfc_worker_wake_up(phba);
 546         spin_unlock_irqrestore(&phba->hbalock, flags);
 547
 548         return 1;
 549 }
 550
 551 void
 552 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 553 {
 554         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 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                 spin_lock_irq(shost->host_lock);
 579                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 580                 spin_unlock_irq(shost->host_lock);
 581         }
 582 }
 583
 584 void
 585 lpfc_port_link_failure(struct lpfc_vport *vport)
 586 {
 587         /* Cleanup any outstanding RSCN activity */
 588         lpfc_els_flush_rscn(vport);
 589
 590         /* Cleanup any outstanding ELS commands */
 591         lpfc_els_flush_cmd(vport);
 592
 593         lpfc_cleanup_rpis(vport, 0);
 594
 595         /* Turn off discovery timer if its running */
 596         lpfc_can_disctmo(vport);
 597 }
 598
 599 static void
 600 lpfc_linkdown_port(struct lpfc_vport *vport)
 601 {
 602         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 603
 604         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 605
 606         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 607                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 608                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 609
 610         lpfc_port_link_failure(vport);
 611
 612 }
 613
 614 int
 615 lpfc_linkdown(struct lpfc_hba *phba)
 616 {
 617         struct lpfc_vport *vport = phba->pport;
 618         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 619         struct lpfc_vport **vports;
 620         LPFC_MBOXQ_t          *mb;
 621         int i;
 622
 623         if (phba->link_state == LPFC_LINK_DOWN) {
 624                 return 0;
 625         }
 626         spin_lock_irq(&phba->hbalock);
 627         if (phba->link_state > LPFC_LINK_DOWN) {
 628                 phba->link_state = LPFC_LINK_DOWN;
 629                 phba->pport->fc_flag &= ~FC_LBIT;
 630         }
 631         spin_unlock_irq(&phba->hbalock);
 632         vports = lpfc_create_vport_work_array(phba);
 633         if (vports != NULL)
 634                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
 635                         /* Issue a LINK DOWN event to all nodes */
 636                         lpfc_linkdown_port(vports[i]);
 637                 }
 638         lpfc_destroy_vport_work_array(phba, vports);
 639         /* Clean up any firmware default rpi's */
 640         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 641         if (mb) {
 642                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 643                 mb->vport = vport;
 644                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 645                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 646                     == MBX_NOT_FINISHED) {
 647                         mempool_free(mb, phba->mbox_mem_pool);
 648                 }
 649         }
 650
 651         /* Setup myDID for link up if we are in pt2pt mode */
 652         if (phba->pport->fc_flag & FC_PT2PT) {
 653                 phba->pport->fc_myDID = 0;
 654                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 655                 if (mb) {
 656                         lpfc_config_link(phba, mb);
 657                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 658                         mb->vport = vport;
 659                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 660                             == MBX_NOT_FINISHED) {
 661                                 mempool_free(mb, phba->mbox_mem_pool);
 662                         }
 663                 }
 664                 spin_lock_irq(shost->host_lock);
 665                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 666                 spin_unlock_irq(shost->host_lock);
 667         }
 668
 669         return 0;
 670 }
 671
 672 static void
 673 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 674 {
 675         struct lpfc_nodelist *ndlp;
 676
 677         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 678                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 679                         continue;
 680
 681                 if (ndlp->nlp_type & NLP_FABRIC) {
 682                                 /* On Linkup its safe to clean up the ndlp
 683                                  * from Fabric connections.
 684                                  */
 685                         if (ndlp->nlp_DID != Fabric_DID)
 686                                 lpfc_unreg_rpi(vport, ndlp);
 687                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 688                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 689                                 /* Fail outstanding IO now since device is
 690                                  * marked for PLOGI.
 691                                  */
 692                         lpfc_unreg_rpi(vport, ndlp);
 693                 }
 694         }
 695 }
 696
 697 static void
 698 lpfc_linkup_port(struct lpfc_vport *vport)
 699 {
 700         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 701         struct lpfc_hba  *phba = vport->phba;
 702
 703         if ((vport->load_flag & FC_UNLOADING) != 0)
 704                 return;
 705
 706         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 707                 "Link Up:         top:x%x speed:x%x flg:x%x",
 708                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 709
 710         /* If NPIV is not enabled, only bring the physical port up */
 711         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 712                 (vport != phba->pport))
 713                 return;
 714
 715         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 716
 717         spin_lock_irq(shost->host_lock);
 718         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 719                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 720         vport->fc_flag |= FC_NDISC_ACTIVE;
 721         vport->fc_ns_retry = 0;
 722         spin_unlock_irq(shost->host_lock);
 723
 724         if (vport->fc_flag & FC_LBIT)
 725                 lpfc_linkup_cleanup_nodes(vport);
 726
 727 }
 728
 729 static int
 730 lpfc_linkup(struct lpfc_hba *phba)
 731 {
 732         struct lpfc_vport **vports;
 733         int i;
 734
 735         phba->link_state = LPFC_LINK_UP;
 736
 737         /* Unblock fabric iocbs if they are blocked */
 738         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 739         del_timer_sync(&phba->fabric_block_timer);
 740
 741         vports = lpfc_create_vport_work_array(phba);
 742         if (vports != NULL)
 743                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
 744                         lpfc_linkup_port(vports[i]);
 745         lpfc_destroy_vport_work_array(phba, vports);
 746         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 747                 lpfc_issue_clear_la(phba, phba->pport);
 748
 749         return 0;
 750 }
 751
 752 /*
 753  * This routine handles processing a CLEAR_LA mailbox
 754  * command upon completion. It is setup in the LPFC_MBOXQ
 755  * as the completion routine when the command is
 756  * handed off to the SLI layer.
 757  */
 758 static void
 759 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 760 {
 761         struct lpfc_vport *vport = pmb->vport;
 762         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 763         struct lpfc_sli   *psli = &phba->sli;
 764         MAILBOX_t *mb = &pmb->mb;
 765         uint32_t control;
 766
 767         /* Since we don't do discovery right now, turn these off here */
 768         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 769         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 770         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 771
 772         /* Check for error */
 773         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 774                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 775                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 776                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 777                                  "state x%x\n",
 778                                  mb->mbxStatus, vport->port_state);
 779                 phba->link_state = LPFC_HBA_ERROR;
 780                 goto out;
 781         }
 782
 783         if (vport->port_type == LPFC_PHYSICAL_PORT)
 784                 phba->link_state = LPFC_HBA_READY;
 785
 786         spin_lock_irq(&phba->hbalock);
 787         psli->sli_flag |= LPFC_PROCESS_LA;
 788         control = readl(phba->HCregaddr);
 789         control |= HC_LAINT_ENA;
 790         writel(control, phba->HCregaddr);
 791         readl(phba->HCregaddr); /* flush */
 792         spin_unlock_irq(&phba->hbalock);
 793         return;
 794
 795         vport->num_disc_nodes = 0;
 796         /* go thru NPR nodes and issue ELS PLOGIs */
 797         if (vport->fc_npr_cnt)
 798                 lpfc_els_disc_plogi(vport);
 799
 800         if (!vport->num_disc_nodes) {
 801                 spin_lock_irq(shost->host_lock);
 802                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 803                 spin_unlock_irq(shost->host_lock);
 804         }
 805
 806         vport->port_state = LPFC_VPORT_READY;
 807
 808 out:
 809         /* Device Discovery completes */
 810         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 811                          "0225 Device Discovery completes\n");
 812         mempool_free(pmb, phba->mbox_mem_pool);
 813
 814         spin_lock_irq(shost->host_lock);
 815         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 816         spin_unlock_irq(shost->host_lock);
 817
 818         del_timer_sync(&phba->fc_estabtmo);
 819
 820         lpfc_can_disctmo(vport);
 821
 822         /* turn on Link Attention interrupts */
 823
 824         spin_lock_irq(&phba->hbalock);
 825         psli->sli_flag |= LPFC_PROCESS_LA;
 826         control = readl(phba->HCregaddr);
 827         control |= HC_LAINT_ENA;
 828         writel(control, phba->HCregaddr);
 829         readl(phba->HCregaddr); /* flush */
 830         spin_unlock_irq(&phba->hbalock);
 831
 832         return;
 833 }
 834
 835
 836 static void
 837 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 838 {
 839         struct lpfc_vport *vport = pmb->vport;
 840
 841         if (pmb->mb.mbxStatus)
 842                 goto out;
 843
 844         mempool_free(pmb, phba->mbox_mem_pool);
 845
 846         if (phba->fc_topology == TOPOLOGY_LOOP &&
 847             vport->fc_flag & FC_PUBLIC_LOOP &&
 848             !(vport->fc_flag & FC_LBIT)) {
 849                         /* Need to wait for FAN - use discovery timer
 850                          * for timeout.  port_state is identically
 851                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 852                          */
 853                         lpfc_set_disctmo(vport);
 854                         return;
 855         }
 856
 857         /* Start discovery by sending a FLOGI. port_state is identically
 858          * LPFC_FLOGI while waiting for FLOGI cmpl
 859          */
 860         if (vport->port_state != LPFC_FLOGI) {
 861                 lpfc_initial_flogi(vport);
 862         }
 863         return;
 864
 865 out:
 866         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 867                          "0306 CONFIG_LINK mbxStatus error x%x "
 868                          "HBA state x%x\n",
 869                          pmb->mb.mbxStatus, vport->port_state);
 870         mempool_free(pmb, phba->mbox_mem_pool);
 871
 872         lpfc_linkdown(phba);
 873
 874         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 875                          "0200 CONFIG_LINK bad hba state x%x\n",
 876                          vport->port_state);
 877
 878         lpfc_issue_clear_la(phba, vport);
 879         return;
 880 }
 881
 882 static void
 883 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 884 {
 885         MAILBOX_t *mb = &pmb->mb;
 886         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 887         struct lpfc_vport  *vport = pmb->vport;
 888
 889
 890         /* Check for error */
 891         if (mb->mbxStatus) {
 892                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 893                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 894                                  "0319 READ_SPARAM mbxStatus error x%x "
 895                                  "hba state x%x>\n",
 896                                  mb->mbxStatus, vport->port_state);
 897                 lpfc_linkdown(phba);
 898                 goto out;
 899         }
 900
 901         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 902                sizeof (struct serv_parm));
 903         if (phba->cfg_soft_wwnn)
 904                 u64_to_wwn(phba->cfg_soft_wwnn,
 905                            vport->fc_sparam.nodeName.u.wwn);
 906         if (phba->cfg_soft_wwpn)
 907                 u64_to_wwn(phba->cfg_soft_wwpn,
 908                            vport->fc_sparam.portName.u.wwn);
 909         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 910                sizeof(vport->fc_nodename));
 911         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 912                sizeof(vport->fc_portname));
 913         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 914                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 915                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 916         }
 917
 918         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 919         kfree(mp);
 920         mempool_free(pmb, phba->mbox_mem_pool);
 921         return;
 922
 923 out:
 924         pmb->context1 = NULL;
 925         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 926         kfree(mp);
 927         lpfc_issue_clear_la(phba, vport);
 928         mempool_free(pmb, phba->mbox_mem_pool);
 929         return;
 930 }
 931
 932 static void
 933 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 934 {
 935         struct lpfc_vport *vport = phba->pport;
 936         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 937         int i;
 938         struct lpfc_dmabuf *mp;
 939         int rc;
 940
 941         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 942         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 943
 944         spin_lock_irq(&phba->hbalock);
 945         switch (la->UlnkSpeed) {
 946         case LA_1GHZ_LINK:
 947                 phba->fc_linkspeed = LA_1GHZ_LINK;
 948                 break;
 949         case LA_2GHZ_LINK:
 950                 phba->fc_linkspeed = LA_2GHZ_LINK;
 951                 break;
 952         case LA_4GHZ_LINK:
 953                 phba->fc_linkspeed = LA_4GHZ_LINK;
 954                 break;
 955         case LA_8GHZ_LINK:
 956                 phba->fc_linkspeed = LA_8GHZ_LINK;
 957                 break;
 958         default:
 959                 phba->fc_linkspeed = LA_UNKNW_LINK;
 960                 break;
 961         }
 962
 963         phba->fc_topology = la->topology;
 964         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 965
 966         if (phba->fc_topology == TOPOLOGY_LOOP) {
 967                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 968
 969                                 /* Get Loop Map information */
 970                 if (la->il)
 971                         vport->fc_flag |= FC_LBIT;
 972
 973                 vport->fc_myDID = la->granted_AL_PA;
 974                 i = la->un.lilpBde64.tus.f.bdeSize;
 975
 976                 if (i == 0) {
 977                         phba->alpa_map[0] = 0;
 978                 } else {
 979                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 980                                 int numalpa, j, k;
 981                                 union {
 982                                         uint8_t pamap[16];
 983                                         struct {
 984                                                 uint32_t wd1;
 985                                                 uint32_t wd2;
 986                                                 uint32_t wd3;
 987                                                 uint32_t wd4;
 988                                         } pa;
 989                                 } un;
 990                                 numalpa = phba->alpa_map[0];
 991                                 j = 0;
 992                                 while (j < numalpa) {
 993                                         memset(un.pamap, 0, 16);
 994                                         for (k = 1; j < numalpa; k++) {
 995                                                 un.pamap[k - 1] =
 996                                                         phba->alpa_map[j + 1];
 997                                                 j++;
 998                                                 if (k == 16)
 999                                                         break;
1000                                         }
1001                                         /* Link Up Event ALPA map */
1002                                         lpfc_printf_log(phba,
1003                                                         KERN_WARNING,
1004                                                         LOG_LINK_EVENT,
1005                                                         "1304 Link Up Event "
1006                                                         "ALPA map Data: x%x "
1007                                                         "x%x x%x x%x\n",
1008                                                         un.pa.wd1, un.pa.wd2,
1009                                                         un.pa.wd3, un.pa.wd4);
1010                                 }
1011                         }
1012                 }
1013         } else {
1014                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1015                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1016                            (phba->sli_rev == 3))
1017                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1018                 }
1019                 vport->fc_myDID = phba->fc_pref_DID;
1020                 vport->fc_flag |= FC_LBIT;
1021         }
1022         spin_unlock_irq(&phba->hbalock);
1023
1024         lpfc_linkup(phba);
1025         if (sparam_mbox) {
1026                 lpfc_read_sparam(phba, sparam_mbox, 0);
1027                 sparam_mbox->vport = vport;
1028                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1029                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1030                 if (rc == MBX_NOT_FINISHED) {
1031                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1032                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1033                         kfree(mp);
1034                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1035                         if (cfglink_mbox)
1036                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1037                         goto out;
1038                 }
1039         }
1040
1041         if (cfglink_mbox) {
1042                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1043                 lpfc_config_link(phba, cfglink_mbox);
1044                 cfglink_mbox->vport = vport;
1045                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1046                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1047                 if (rc != MBX_NOT_FINISHED)
1048                         return;
1049                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1050         }
1051 out:
1052         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1053         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1054                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1055                          vport->port_state, sparam_mbox, cfglink_mbox);
1056         lpfc_issue_clear_la(phba, vport);
1057         return;
1058 }
1059
1060 static void
1061 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1062 {
1063         uint32_t control;
1064         struct lpfc_sli *psli = &phba->sli;
1065
1066         lpfc_linkdown(phba);
1067
1068         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1069         spin_lock_irq(&phba->hbalock);
1070         psli->sli_flag |= LPFC_PROCESS_LA;
1071         control = readl(phba->HCregaddr);
1072         control |= HC_LAINT_ENA;
1073         writel(control, phba->HCregaddr);
1074         readl(phba->HCregaddr); /* flush */
1075         spin_unlock_irq(&phba->hbalock);
1076 }
1077
1078 /*
1079  * This routine handles processing a READ_LA mailbox
1080  * command upon completion. It is setup in the LPFC_MBOXQ
1081  * as the completion routine when the command is
1082  * handed off to the SLI layer.
1083  */
1084 void
1085 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1086 {
1087         struct lpfc_vport *vport = pmb->vport;
1088         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1089         READ_LA_VAR *la;
1090         MAILBOX_t *mb = &pmb->mb;
1091         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1092
1093         /* Check for error */
1094         if (mb->mbxStatus) {
1095                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1096                                 "1307 READ_LA mbox error x%x state x%x\n",
1097                                 mb->mbxStatus, vport->port_state);
1098                 lpfc_mbx_issue_link_down(phba);
1099                 phba->link_state = LPFC_HBA_ERROR;
1100                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1101         }
1102
1103         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1104
1105         memcpy(&phba->alpa_map[0], mp->virt, 128);
1106
1107         spin_lock_irq(shost->host_lock);
1108         if (la->pb)
1109                 vport->fc_flag |= FC_BYPASSED_MODE;
1110         else
1111                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1112         spin_unlock_irq(shost->host_lock);
1113
1114         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1115             (phba->fc_eventTag == la->eventTag)) {
1116                 phba->fc_stat.LinkMultiEvent++;
1117                 if (la->attType == AT_LINK_UP)
1118                         if (phba->fc_eventTag != 0)
1119                                 lpfc_linkdown(phba);
1120         }
1121
1122         phba->fc_eventTag = la->eventTag;
1123
1124         if (la->attType == AT_LINK_UP) {
1125                 phba->fc_stat.LinkUp++;
1126                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1127                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1128                                         "1306 Link Up Event in loop back mode "
1129                                         "x%x received Data: x%x x%x x%x x%x\n",
1130                                         la->eventTag, phba->fc_eventTag,
1131                                         la->granted_AL_PA, la->UlnkSpeed,
1132                                         phba->alpa_map[0]);
1133                 } else {
1134                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1135                                         "1303 Link Up Event x%x received "
1136                                         "Data: x%x x%x x%x x%x\n",
1137                                         la->eventTag, phba->fc_eventTag,
1138                                         la->granted_AL_PA, la->UlnkSpeed,
1139                                         phba->alpa_map[0]);
1140                 }
1141                 lpfc_mbx_process_link_up(phba, la);
1142         } else {
1143                 phba->fc_stat.LinkDown++;
1144                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1145                                 "1305 Link Down Event x%x received "
1146                                 "Data: x%x x%x x%x\n",
1147                                 la->eventTag, phba->fc_eventTag,
1148                                 phba->pport->port_state, vport->fc_flag);
1149                 lpfc_mbx_issue_link_down(phba);
1150         }
1151
1152 lpfc_mbx_cmpl_read_la_free_mbuf:
1153         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1154         kfree(mp);
1155         mempool_free(pmb, phba->mbox_mem_pool);
1156         return;
1157 }
1158
1159 /*
1160  * This routine handles processing a REG_LOGIN mailbox
1161  * command upon completion. It is setup in the LPFC_MBOXQ
1162  * as the completion routine when the command is
1163  * handed off to the SLI layer.
1164  */
1165 void
1166 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1167 {
1168         struct lpfc_vport  *vport = pmb->vport;
1169         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1170         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1171
1172         pmb->context1 = NULL;
1173
1174         /* Good status, call state machine */
1175         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1176         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1177         kfree(mp);
1178         mempool_free(pmb, phba->mbox_mem_pool);
1179         lpfc_nlp_put(ndlp);
1180
1181         return;
1182 }
1183
1184 static void
1185 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1186 {
1187         MAILBOX_t *mb = &pmb->mb;
1188         struct lpfc_vport *vport = pmb->vport;
1189         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1190
1191         switch (mb->mbxStatus) {
1192         case 0x0011:
1193         case 0x0020:
1194         case 0x9700:
1195                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1196                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1197                                  mb->mbxStatus);
1198                 break;
1199         }
1200         vport->unreg_vpi_cmpl = VPORT_OK;
1201         mempool_free(pmb, phba->mbox_mem_pool);
1202         /*
1203          * This shost reference might have been taken at the beginning of
1204          * lpfc_vport_delete()
1205          */
1206         if (vport->load_flag & FC_UNLOADING)
1207                 scsi_host_put(shost);
1208 }
1209
1210 void
1211 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1212 {
1213         struct lpfc_hba  *phba = vport->phba;
1214         LPFC_MBOXQ_t *mbox;
1215         int rc;
1216
1217         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1218         if (!mbox)
1219                 return;
1220
1221         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1222         mbox->vport = vport;
1223         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1224         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1225         if (rc == MBX_NOT_FINISHED) {
1226                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1227                                  "1800 Could not issue unreg_vpi\n");
1228                 mempool_free(mbox, phba->mbox_mem_pool);
1229                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1230         }
1231 }
1232
1233 static void
1234 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1235 {
1236         struct lpfc_vport *vport = pmb->vport;
1237         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1238         MAILBOX_t *mb = &pmb->mb;
1239
1240         switch (mb->mbxStatus) {
1241         case 0x0011:
1242         case 0x9601:
1243         case 0x9602:
1244                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1245                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1246                                  mb->mbxStatus);
1247                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1248                 spin_lock_irq(shost->host_lock);
1249                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1250                 spin_unlock_irq(shost->host_lock);
1251                 vport->fc_myDID = 0;
1252                 goto out;
1253         }
1254
1255         vport->num_disc_nodes = 0;
1256         /* go thru NPR list and issue ELS PLOGIs */
1257         if (vport->fc_npr_cnt)
1258                 lpfc_els_disc_plogi(vport);
1259
1260         if (!vport->num_disc_nodes) {
1261                 spin_lock_irq(shost->host_lock);
1262                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1263                 spin_unlock_irq(shost->host_lock);
1264                 lpfc_can_disctmo(vport);
1265         }
1266         vport->port_state = LPFC_VPORT_READY;
1267
1268 out:
1269         mempool_free(pmb, phba->mbox_mem_pool);
1270         return;
1271 }
1272
1273 /*
1274  * This routine handles processing a Fabric REG_LOGIN mailbox
1275  * command upon completion. It is setup in the LPFC_MBOXQ
1276  * as the completion routine when the command is
1277  * handed off to the SLI layer.
1278  */
1279 void
1280 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1281 {
1282         struct lpfc_vport *vport = pmb->vport;
1283         MAILBOX_t *mb = &pmb->mb;
1284         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1285         struct lpfc_nodelist *ndlp;
1286         struct lpfc_vport **vports;
1287         int i;
1288
1289         ndlp = (struct lpfc_nodelist *) pmb->context2;
1290         pmb->context1 = NULL;
1291         pmb->context2 = NULL;
1292         if (mb->mbxStatus) {
1293                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1294                 kfree(mp);
1295                 mempool_free(pmb, phba->mbox_mem_pool);
1296                 lpfc_nlp_put(ndlp);
1297
1298                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1299                         /* FLOGI failed, use loop map to make discovery list */
1300                         lpfc_disc_list_loopmap(vport);
1301
1302                         /* Start discovery */
1303                         lpfc_disc_start(vport);
1304                         return;
1305                 }
1306
1307                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1308                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1309                                  "0258 Register Fabric login error: 0x%x\n",
1310                                  mb->mbxStatus);
1311                 return;
1312         }
1313
1314         ndlp->nlp_rpi = mb->un.varWords[0];
1315         ndlp->nlp_type |= NLP_FABRIC;
1316         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1317
1318         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1319
1320         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1321                 vports = lpfc_create_vport_work_array(phba);
1322                 if (vports != NULL)
1323                         for(i = 0;
1324                             i <= phba->max_vpi && vports[i] != NULL;
1325                             i++) {
1326                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1327                                         continue;
1328                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1329                                         lpfc_initial_fdisc(vports[i]);
1330                                 else if (phba->sli3_options &
1331                                                 LPFC_SLI3_NPIV_ENABLED) {
1332                                         lpfc_vport_set_state(vports[i],
1333                                                 FC_VPORT_NO_FABRIC_SUPP);
1334                                         lpfc_printf_vlog(vport, KERN_ERR,
1335                                                          LOG_ELS,
1336                                                         "0259 No NPIV "
1337                                                         "Fabric support\n");
1338                                 }
1339                         }
1340                 lpfc_destroy_vport_work_array(phba, vports);
1341                 lpfc_do_scr_ns_plogi(phba, vport);
1342         }
1343
1344         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1345         kfree(mp);
1346         mempool_free(pmb, phba->mbox_mem_pool);
1347         return;
1348 }
1349
1350 /*
1351  * This routine handles processing a NameServer REG_LOGIN mailbox
1352  * command upon completion. It is setup in the LPFC_MBOXQ
1353  * as the completion routine when the command is
1354  * handed off to the SLI layer.
1355  */
1356 void
1357 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1358 {
1359         MAILBOX_t *mb = &pmb->mb;
1360         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1361         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1362         struct lpfc_vport *vport = pmb->vport;
1363
1364         if (mb->mbxStatus) {
1365 out:
1366                 lpfc_nlp_put(ndlp);
1367                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1368                 kfree(mp);
1369                 mempool_free(pmb, phba->mbox_mem_pool);
1370
1371                 /* If no other thread is using the ndlp, free it */
1372                 lpfc_nlp_not_used(ndlp);
1373
1374                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1375                         /*
1376                          * RegLogin failed, use loop map to make discovery
1377                          * list
1378                          */
1379                         lpfc_disc_list_loopmap(vport);
1380
1381                         /* Start discovery */
1382                         lpfc_disc_start(vport);
1383                         return;
1384                 }
1385                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1386                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1387                                  "0260 Register NameServer error: 0x%x\n",
1388                                  mb->mbxStatus);
1389                 return;
1390         }
1391
1392         pmb->context1 = NULL;
1393
1394         ndlp->nlp_rpi = mb->un.varWords[0];
1395         ndlp->nlp_type |= NLP_FABRIC;
1396         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1397
1398         if (vport->port_state < LPFC_VPORT_READY) {
1399                 /* Link up discovery requires Fabric registration. */
1400                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1401                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1402                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1403                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1404                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1405
1406                 /* Issue SCR just before NameServer GID_FT Query */
1407                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1408         }
1409
1410         vport->fc_ns_retry = 0;
1411         /* Good status, issue CT Request to NameServer */
1412         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1413                 /* Cannot issue NameServer Query, so finish up discovery */
1414                 goto out;
1415         }
1416
1417         lpfc_nlp_put(ndlp);
1418         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1419         kfree(mp);
1420         mempool_free(pmb, phba->mbox_mem_pool);
1421
1422         return;
1423 }
1424
1425 static void
1426 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1427 {
1428         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1429         struct fc_rport  *rport;
1430         struct lpfc_rport_data *rdata;
1431         struct fc_rport_identifiers rport_ids;
1432         struct lpfc_hba  *phba = vport->phba;
1433
1434         /* Remote port has reappeared. Re-register w/ FC transport */
1435         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1436         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1437         rport_ids.port_id = ndlp->nlp_DID;
1438         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1439
1440         /*
1441          * We leave our node pointer in rport->dd_data when we unregister a
1442          * FCP target port.  But fc_remote_port_add zeros the space to which
1443          * rport->dd_data points.  So, if we're reusing a previously
1444          * registered port, drop the reference that we took the last time we
1445          * registered the port.
1446          */
1447         if (ndlp->rport && ndlp->rport->dd_data &&
1448             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1449                 lpfc_nlp_put(ndlp);
1450         }
1451
1452         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1453                 "rport add:       did:x%x flg:x%x type x%x",
1454                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1455
1456         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1457         if (!rport || !get_device(&rport->dev)) {
1458                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1459                            "Warning: fc_remote_port_add failed\n");
1460                 return;
1461         }
1462
1463         /* initialize static port data */
1464         rport->maxframe_size = ndlp->nlp_maxframe;
1465         rport->supported_classes = ndlp->nlp_class_sup;
1466         rdata = rport->dd_data;
1467         rdata->pnode = lpfc_nlp_get(ndlp);
1468
1469         if (ndlp->nlp_type & NLP_FCP_TARGET)
1470                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1471         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1472                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1473
1474
1475         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1476                 fc_remote_port_rolechg(rport, rport_ids.roles);
1477
1478         if ((rport->scsi_target_id != -1) &&
1479             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1480                 ndlp->nlp_sid = rport->scsi_target_id;
1481         }
1482         return;
1483 }
1484
1485 static void
1486 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1487 {
1488         struct fc_rport *rport = ndlp->rport;
1489
1490         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1491                 "rport delete:    did:x%x flg:x%x type x%x",
1492                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1493
1494         fc_remote_port_delete(rport);
1495
1496         return;
1497 }
1498
1499 static void
1500 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1501 {
1502         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1503
1504         spin_lock_irq(shost->host_lock);
1505         switch (state) {
1506         case NLP_STE_UNUSED_NODE:
1507                 vport->fc_unused_cnt += count;
1508                 break;
1509         case NLP_STE_PLOGI_ISSUE:
1510                 vport->fc_plogi_cnt += count;
1511                 break;
1512         case NLP_STE_ADISC_ISSUE:
1513                 vport->fc_adisc_cnt += count;
1514                 break;
1515         case NLP_STE_REG_LOGIN_ISSUE:
1516                 vport->fc_reglogin_cnt += count;
1517                 break;
1518         case NLP_STE_PRLI_ISSUE:
1519                 vport->fc_prli_cnt += count;
1520                 break;
1521         case NLP_STE_UNMAPPED_NODE:
1522                 vport->fc_unmap_cnt += count;
1523                 break;
1524         case NLP_STE_MAPPED_NODE:
1525                 vport->fc_map_cnt += count;
1526                 break;
1527         case NLP_STE_NPR_NODE:
1528                 vport->fc_npr_cnt += count;
1529                 break;
1530         }
1531         spin_unlock_irq(shost->host_lock);
1532 }
1533
1534 static void
1535 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1536                        int old_state, int new_state)
1537 {
1538         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1539
1540         if (new_state == NLP_STE_UNMAPPED_NODE) {
1541                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1542                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1543                 ndlp->nlp_type |= NLP_FC_NODE;
1544         }
1545         if (new_state == NLP_STE_MAPPED_NODE)
1546                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1547         if (new_state == NLP_STE_NPR_NODE)
1548                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1549
1550         /* Transport interface */
1551         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1552                             old_state == NLP_STE_UNMAPPED_NODE)) {
1553                 vport->phba->nport_event_cnt++;
1554                 lpfc_unregister_remote_port(ndlp);
1555         }
1556
1557         if (new_state ==  NLP_STE_MAPPED_NODE ||
1558             new_state == NLP_STE_UNMAPPED_NODE) {
1559                 vport->phba->nport_event_cnt++;
1560                 /*
1561                  * Tell the fc transport about the port, if we haven't
1562                  * already. If we have, and it's a scsi entity, be
1563                  * sure to unblock any attached scsi devices
1564                  */
1565                 lpfc_register_remote_port(vport, ndlp);
1566         }
1567         /*
1568          * if we added to Mapped list, but the remote port
1569          * registration failed or assigned a target id outside
1570          * our presentable range - move the node to the
1571          * Unmapped List
1572          */
1573         if (new_state == NLP_STE_MAPPED_NODE &&
1574             (!ndlp->rport ||
1575              ndlp->rport->scsi_target_id == -1 ||
1576              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1577                 spin_lock_irq(shost->host_lock);
1578                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1579                 spin_unlock_irq(shost->host_lock);
1580                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1581         }
1582 }
1583
1584 static char *
1585 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1586 {
1587         static char *states[] = {
1588                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1589                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1590                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1591                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1592                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1593                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1594                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1595                 [NLP_STE_NPR_NODE] = "NPR",
1596         };
1597
1598         if (state < NLP_STE_MAX_STATE && states[state])
1599                 strlcpy(buffer, states[state], size);
1600         else
1601                 snprintf(buffer, size, "unknown (%d)", state);
1602         return buffer;
1603 }
1604
1605 void
1606 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1607                    int state)
1608 {
1609         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1610         int  old_state = ndlp->nlp_state;
1611         char name1[16], name2[16];
1612
1613         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1614                          "0904 NPort state transition x%06x, %s -> %s\n",
1615                          ndlp->nlp_DID,
1616                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1617                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1618
1619         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1620                 "node statechg    did:x%x old:%d ste:%d",
1621                 ndlp->nlp_DID, old_state, state);
1622
1623         if (old_state == NLP_STE_NPR_NODE &&
1624             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1625             state != NLP_STE_NPR_NODE)
1626                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1627         if (old_state == NLP_STE_UNMAPPED_NODE) {
1628                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1629                 ndlp->nlp_type &= ~NLP_FC_NODE;
1630         }
1631
1632         if (list_empty(&ndlp->nlp_listp)) {
1633                 spin_lock_irq(shost->host_lock);
1634                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1635                 spin_unlock_irq(shost->host_lock);
1636         } else if (old_state)
1637                 lpfc_nlp_counters(vport, old_state, -1);
1638
1639         ndlp->nlp_state = state;
1640         lpfc_nlp_counters(vport, state, 1);
1641         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1642 }
1643
1644 void
1645 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1646 {
1647         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1648
1649         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1650                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1651         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1652                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1653         spin_lock_irq(shost->host_lock);
1654         list_del_init(&ndlp->nlp_listp);
1655         spin_unlock_irq(shost->host_lock);
1656         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1657                                NLP_STE_UNUSED_NODE);
1658 }
1659
1660 void
1661 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1662 {
1663         /*
1664          * Use of lpfc_drop_node and UNUSED list. lpfc_drop_node should
1665          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1666          * the ndlp from the vport.  The ndlp resides on the UNUSED list
1667          * until ALL other outstanding threads have completed. Thus, if a
1668          * ndlp is on the UNUSED list already, we should never do another
1669          * lpfc_drop_node() on it.
1670          */
1671         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1672         lpfc_nlp_put(ndlp);
1673         return;
1674 }
1675
1676 /*
1677  * Start / ReStart rescue timer for Discovery / RSCN handling
1678  */
1679 void
1680 lpfc_set_disctmo(struct lpfc_vport *vport)
1681 {
1682         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1683         struct lpfc_hba  *phba = vport->phba;
1684         uint32_t tmo;
1685
1686         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1687                 /* For FAN, timeout should be greater then edtov */
1688                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1689         } else {
1690                 /* Normal discovery timeout should be > then ELS/CT timeout
1691                  * FC spec states we need 3 * ratov for CT requests
1692                  */
1693                 tmo = ((phba->fc_ratov * 3) + 3);
1694         }
1695
1696
1697         if (!timer_pending(&vport->fc_disctmo)) {
1698                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1699                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1700                         tmo, vport->port_state, vport->fc_flag);
1701         }
1702
1703         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1704         spin_lock_irq(shost->host_lock);
1705         vport->fc_flag |= FC_DISC_TMO;
1706         spin_unlock_irq(shost->host_lock);
1707
1708         /* Start Discovery Timer state <hba_state> */
1709         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1710                          "0247 Start Discovery Timer state x%x "
1711                          "Data: x%x x%lx x%x x%x\n",
1712                          vport->port_state, tmo,
1713                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1714                          vport->fc_adisc_cnt);
1715
1716         return;
1717 }
1718
1719 /*
1720  * Cancel rescue timer for Discovery / RSCN handling
1721  */
1722 int
1723 lpfc_can_disctmo(struct lpfc_vport *vport)
1724 {
1725         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1726         unsigned long iflags;
1727
1728         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1729                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1730                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1731
1732         /* Turn off discovery timer if its running */
1733         if (vport->fc_flag & FC_DISC_TMO) {
1734                 spin_lock_irqsave(shost->host_lock, iflags);
1735                 vport->fc_flag &= ~FC_DISC_TMO;
1736                 spin_unlock_irqrestore(shost->host_lock, iflags);
1737                 del_timer_sync(&vport->fc_disctmo);
1738                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1739                 vport->work_port_events &= ~WORKER_DISC_TMO;
1740                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1741         }
1742
1743         /* Cancel Discovery Timer state <hba_state> */
1744         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1745                          "0248 Cancel Discovery Timer state x%x "
1746                          "Data: x%x x%x x%x\n",
1747                          vport->port_state, vport->fc_flag,
1748                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1749         return 0;
1750 }
1751
1752 /*
1753  * Check specified ring for outstanding IOCB on the SLI queue
1754  * Return true if iocb matches the specified nport
1755  */
1756 int
1757 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1758                     struct lpfc_sli_ring *pring,
1759                     struct lpfc_iocbq *iocb,
1760                     struct lpfc_nodelist *ndlp)
1761 {
1762         struct lpfc_sli *psli = &phba->sli;
1763         IOCB_t *icmd = &iocb->iocb;
1764         struct lpfc_vport    *vport = ndlp->vport;
1765
1766         if (iocb->vport != vport)
1767                 return 0;
1768
1769         if (pring->ringno == LPFC_ELS_RING) {
1770                 switch (icmd->ulpCommand) {
1771                 case CMD_GEN_REQUEST64_CR:
1772                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1773                                 return 1;
1774                 case CMD_ELS_REQUEST64_CR:
1775                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1776                                 return 1;
1777                 case CMD_XMIT_ELS_RSP64_CX:
1778                         if (iocb->context1 == (uint8_t *) ndlp)
1779                                 return 1;
1780                 }
1781         } else if (pring->ringno == psli->extra_ring) {
1782
1783         } else if (pring->ringno == psli->fcp_ring) {
1784                 /* Skip match check if waiting to relogin to FCP target */
1785                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1786                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1787                         return 0;
1788                 }
1789                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1790                         return 1;
1791                 }
1792         } else if (pring->ringno == psli->next_ring) {
1793
1794         }
1795         return 0;
1796 }
1797
1798 /*
1799  * Free resources / clean up outstanding I/Os
1800  * associated with nlp_rpi in the LPFC_NODELIST entry.
1801  */
1802 static int
1803 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1804 {
1805         LIST_HEAD(completions);
1806         struct lpfc_sli *psli;
1807         struct lpfc_sli_ring *pring;
1808         struct lpfc_iocbq *iocb, *next_iocb;
1809         IOCB_t *icmd;
1810         uint32_t rpi, i;
1811
1812         lpfc_fabric_abort_nport(ndlp);
1813
1814         /*
1815          * Everything that matches on txcmplq will be returned
1816          * by firmware with a no rpi error.
1817          */
1818         psli = &phba->sli;
1819         rpi = ndlp->nlp_rpi;
1820         if (rpi) {
1821                 /* Now process each ring */
1822                 for (i = 0; i < psli->num_rings; i++) {
1823                         pring = &psli->ring[i];
1824
1825                         spin_lock_irq(&phba->hbalock);
1826                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1827                                                  list) {
1828                                 /*
1829                                  * Check to see if iocb matches the nport we are
1830                                  * looking for
1831                                  */
1832                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1833                                                          ndlp))) {
1834                                         /* It matches, so deque and call compl
1835                                            with an error */
1836                                         list_move_tail(&iocb->list,
1837                                                        &completions);
1838                                         pring->txq_cnt--;
1839                                 }
1840                         }
1841                         spin_unlock_irq(&phba->hbalock);
1842                 }
1843         }
1844
1845         while (!list_empty(&completions)) {
1846                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1847                 list_del_init(&iocb->list);
1848
1849                 if (!iocb->iocb_cmpl)
1850                         lpfc_sli_release_iocbq(phba, iocb);
1851                 else {
1852                         icmd = &iocb->iocb;
1853                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1854                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1855                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1856                 }
1857         }
1858
1859         return 0;
1860 }
1861
1862 /*
1863  * Free rpi associated with LPFC_NODELIST entry.
1864  * This routine is called from lpfc_freenode(), when we are removing
1865  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1866  * LOGO that completes successfully, and we are waiting to PLOGI back
1867  * to the remote NPort. In addition, it is called after we receive
1868  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1869  * we are waiting to PLOGI back to the remote NPort.
1870  */
1871 int
1872 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1873 {
1874         struct lpfc_hba *phba = vport->phba;
1875         LPFC_MBOXQ_t    *mbox;
1876         int rc;
1877
1878         if (ndlp->nlp_rpi) {
1879                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1880                 if (mbox) {
1881                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1882                         mbox->vport = vport;
1883                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1884                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1885                         if (rc == MBX_NOT_FINISHED)
1886                                 mempool_free(mbox, phba->mbox_mem_pool);
1887                 }
1888                 lpfc_no_rpi(phba, ndlp);
1889                 ndlp->nlp_rpi = 0;
1890                 return 1;
1891         }
1892         return 0;
1893 }
1894
1895 void
1896 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1897 {
1898         struct lpfc_hba  *phba  = vport->phba;
1899         LPFC_MBOXQ_t     *mbox;
1900         int rc;
1901
1902         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1903         if (mbox) {
1904                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1905                 mbox->vport = vport;
1906                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1907                 mbox->context1 = NULL;
1908                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1909                 if (rc == MBX_NOT_FINISHED) {
1910                         mempool_free(mbox, phba->mbox_mem_pool);
1911                 }
1912         }
1913 }
1914
1915 void
1916 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1917 {
1918         struct lpfc_hba  *phba  = vport->phba;
1919         LPFC_MBOXQ_t     *mbox;
1920         int rc;
1921
1922         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1923         if (mbox) {
1924                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1925                 mbox->vport = vport;
1926                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1927                 mbox->context1 = NULL;
1928                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1929                 if (rc == MBX_NOT_FINISHED) {
1930                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1931                                          "1815 Could not issue "
1932                                          "unreg_did (default rpis)\n");
1933                         mempool_free(mbox, phba->mbox_mem_pool);
1934                 }
1935         }
1936 }
1937
1938 /*
1939  * Free resources associated with LPFC_NODELIST entry
1940  * so it can be freed.
1941  */
1942 static int
1943 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1944 {
1945         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1946         struct lpfc_hba  *phba = vport->phba;
1947         LPFC_MBOXQ_t *mb, *nextmb;
1948         struct lpfc_dmabuf *mp;
1949
1950         /* Cleanup node for NPort <nlp_DID> */
1951         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1952                          "0900 Cleanup node for NPort x%x "
1953                          "Data: x%x x%x x%x\n",
1954                          ndlp->nlp_DID, ndlp->nlp_flag,
1955                          ndlp->nlp_state, ndlp->nlp_rpi);
1956         lpfc_dequeue_node(vport, ndlp);
1957
1958         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1959         if ((mb = phba->sli.mbox_active)) {
1960                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1961                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1962                         mb->context2 = NULL;
1963                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1964                 }
1965         }
1966
1967         spin_lock_irq(&phba->hbalock);
1968         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1969                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1970                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1971                         mp = (struct lpfc_dmabuf *) (mb->context1);
1972                         if (mp) {
1973                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1974                                 kfree(mp);
1975                         }
1976                         list_del(&mb->list);
1977                         mempool_free(mb, phba->mbox_mem_pool);
1978                         lpfc_nlp_put(ndlp);
1979                 }
1980         }
1981         spin_unlock_irq(&phba->hbalock);
1982
1983         lpfc_els_abort(phba,ndlp);
1984         spin_lock_irq(shost->host_lock);
1985         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1986         spin_unlock_irq(shost->host_lock);
1987
1988         ndlp->nlp_last_elscmd = 0;
1989         del_timer_sync(&ndlp->nlp_delayfunc);
1990
1991         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1992                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1993         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1994                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1995
1996         lpfc_unreg_rpi(vport, ndlp);
1997
1998         return 0;
1999 }
2000
2001 /*
2002  * Check to see if we can free the nlp back to the freelist.
2003  * If we are in the middle of using the nlp in the discovery state
2004  * machine, defer the free till we reach the end of the state machine.
2005  */
2006 static void
2007 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2008 {
2009         struct lpfc_hba  *phba = vport->phba;
2010         struct lpfc_rport_data *rdata;
2011         LPFC_MBOXQ_t *mbox;
2012         int rc;
2013
2014         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2015                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2016         }
2017
2018         if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2019                 /* For this case we need to cleanup the default rpi
2020                  * allocated by the firmware.
2021                  */
2022                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2023                         != NULL) {
2024                         rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2025                             (uint8_t *) &vport->fc_sparam, mbox, 0);
2026                         if (rc) {
2027                                 mempool_free(mbox, phba->mbox_mem_pool);
2028                         }
2029                         else {
2030                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2031                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2032                                 mbox->vport = vport;
2033                                 mbox->context2 = NULL;
2034                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2035                                 if (rc == MBX_NOT_FINISHED) {
2036                                         mempool_free(mbox, phba->mbox_mem_pool);
2037                                 }
2038                         }
2039                 }
2040         }
2041
2042         lpfc_cleanup_node(vport, ndlp);
2043
2044         /*
2045          * We can get here with a non-NULL ndlp->rport because when we
2046          * unregister a rport we don't break the rport/node linkage.  So if we
2047          * do, make sure we don't leaving any dangling pointers behind.
2048          */
2049         if (ndlp->rport) {
2050                 rdata = ndlp->rport->dd_data;
2051                 rdata->pnode = NULL;
2052                 ndlp->rport = NULL;
2053         }
2054 }
2055
2056 static int
2057 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2058               uint32_t did)
2059 {
2060         D_ID mydid, ndlpdid, matchdid;
2061
2062         if (did == Bcast_DID)
2063                 return 0;
2064
2065         if (ndlp->nlp_DID == 0) {
2066                 return 0;
2067         }
2068
2069         /* First check for Direct match */
2070         if (ndlp->nlp_DID == did)
2071                 return 1;
2072
2073         /* Next check for area/domain identically equals 0 match */
2074         mydid.un.word = vport->fc_myDID;
2075         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2076                 return 0;
2077         }
2078
2079         matchdid.un.word = did;
2080         ndlpdid.un.word = ndlp->nlp_DID;
2081         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2082                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2083                     (mydid.un.b.area == matchdid.un.b.area)) {
2084                         if ((ndlpdid.un.b.domain == 0) &&
2085                             (ndlpdid.un.b.area == 0)) {
2086                                 if (ndlpdid.un.b.id)
2087                                         return 1;
2088                         }
2089                         return 0;
2090                 }
2091
2092                 matchdid.un.word = ndlp->nlp_DID;
2093                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2094                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2095                         if ((matchdid.un.b.domain == 0) &&
2096                             (matchdid.un.b.area == 0)) {
2097                                 if (matchdid.un.b.id)
2098                                         return 1;
2099                         }
2100                 }
2101         }
2102         return 0;
2103 }
2104
2105 /* Search for a nodelist entry */
2106 static struct lpfc_nodelist *
2107 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2108 {
2109         struct lpfc_nodelist *ndlp;
2110         uint32_t data1;
2111
2112         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2113                 if (lpfc_matchdid(vport, ndlp, did)) {
2114                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2115                                  ((uint32_t) ndlp->nlp_xri << 16) |
2116                                  ((uint32_t) ndlp->nlp_type << 8) |
2117                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2118                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2119                                          "0929 FIND node DID "
2120                                          "Data: x%p x%x x%x x%x\n",
2121                                          ndlp, ndlp->nlp_DID,
2122                                          ndlp->nlp_flag, data1);
2123                         return ndlp;
2124                 }
2125         }
2126
2127         /* FIND node did <did> NOT FOUND */
2128         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2129                          "0932 FIND node did x%x NOT FOUND.\n", did);
2130         return NULL;
2131 }
2132
2133 struct lpfc_nodelist *
2134 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2135 {
2136         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2137         struct lpfc_nodelist *ndlp;
2138
2139         spin_lock_irq(shost->host_lock);
2140         ndlp = __lpfc_findnode_did(vport, did);
2141         spin_unlock_irq(shost->host_lock);
2142         return ndlp;
2143 }
2144
2145 struct lpfc_nodelist *
2146 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2147 {
2148         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2149         struct lpfc_nodelist *ndlp;
2150
2151         ndlp = lpfc_findnode_did(vport, did);
2152         if (!ndlp) {
2153                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2154                     lpfc_rscn_payload_check(vport, did) == 0)
2155                         return NULL;
2156                 ndlp = (struct lpfc_nodelist *)
2157                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2158                 if (!ndlp)
2159                         return NULL;
2160                 lpfc_nlp_init(vport, ndlp, did);
2161                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2162                 spin_lock_irq(shost->host_lock);
2163                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2164                 spin_unlock_irq(shost->host_lock);
2165                 return ndlp;
2166         }
2167         if (vport->fc_flag & FC_RSCN_MODE) {
2168                 if (lpfc_rscn_payload_check(vport, did)) {
2169                         /* If we've already recieved a PLOGI from this NPort
2170                          * we don't need to try to discover it again.
2171                          */
2172                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2173                                 return NULL;
2174
2175                         spin_lock_irq(shost->host_lock);
2176                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2177                         spin_unlock_irq(shost->host_lock);
2178
2179                         /* Since this node is marked for discovery,
2180                          * delay timeout is not needed.
2181                          */
2182                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2183                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2184                 } else
2185                         ndlp = NULL;
2186         } else {
2187                 /* If we've already recieved a PLOGI from this NPort,
2188                  * or we are already in the process of discovery on it,
2189                  * we don't need to try to discover it again.
2190                  */
2191                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2192                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2193                     ndlp->nlp_flag & NLP_RCV_PLOGI)
2194                         return NULL;
2195                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2196                 spin_lock_irq(shost->host_lock);
2197                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2198                 spin_unlock_irq(shost->host_lock);
2199         }
2200         return ndlp;
2201 }
2202
2203 /* Build a list of nodes to discover based on the loopmap */
2204 void
2205 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2206 {
2207         struct lpfc_hba  *phba = vport->phba;
2208         int j;
2209         uint32_t alpa, index;
2210
2211         if (!lpfc_is_link_up(phba))
2212                 return;
2213
2214         if (phba->fc_topology != TOPOLOGY_LOOP)
2215                 return;
2216
2217         /* Check for loop map present or not */
2218         if (phba->alpa_map[0]) {
2219                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2220                         alpa = phba->alpa_map[j];
2221                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2222                                 continue;
2223                         lpfc_setup_disc_node(vport, alpa);
2224                 }
2225         } else {
2226                 /* No alpamap, so try all alpa's */
2227                 for (j = 0; j < FC_MAXLOOP; j++) {
2228                         /* If cfg_scan_down is set, start from highest
2229                          * ALPA (0xef) to lowest (0x1).
2230                          */
2231                         if (vport->cfg_scan_down)
2232                                 index = j;
2233                         else
2234                                 index = FC_MAXLOOP - j - 1;
2235                         alpa = lpfcAlpaArray[index];
2236                         if ((vport->fc_myDID & 0xff) == alpa)
2237                                 continue;
2238                         lpfc_setup_disc_node(vport, alpa);
2239                 }
2240         }
2241         return;
2242 }
2243
2244 void
2245 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2246 {
2247         LPFC_MBOXQ_t *mbox;
2248         struct lpfc_sli *psli = &phba->sli;
2249         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2250         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2251         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2252         int  rc;
2253
2254         /*
2255          * if it's not a physical port or if we already send
2256          * clear_la then don't send it.
2257          */
2258         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2259             (vport->port_type != LPFC_PHYSICAL_PORT))
2260                 return;
2261
2262                         /* Link up discovery */
2263         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2264                 phba->link_state = LPFC_CLEAR_LA;
2265                 lpfc_clear_la(phba, mbox);
2266                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2267                 mbox->vport = vport;
2268                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2269                 if (rc == MBX_NOT_FINISHED) {
2270                         mempool_free(mbox, phba->mbox_mem_pool);
2271                         lpfc_disc_flush_list(vport);
2272                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2273                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2274                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2275                         phba->link_state = LPFC_HBA_ERROR;
2276                 }
2277         }
2278 }
2279
2280 /* Reg_vpi to tell firmware to resume normal operations */
2281 void
2282 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2283 {
2284         LPFC_MBOXQ_t *regvpimbox;
2285
2286         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2287         if (regvpimbox) {
2288                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2289                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2290                 regvpimbox->vport = vport;
2291                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2292                                         == MBX_NOT_FINISHED) {
2293                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2294                 }
2295         }
2296 }
2297
2298 /* Start Link up / RSCN discovery on NPR nodes */
2299 void
2300 lpfc_disc_start(struct lpfc_vport *vport)
2301 {
2302         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2303         struct lpfc_hba  *phba = vport->phba;
2304         uint32_t num_sent;
2305         uint32_t clear_la_pending;
2306         int did_changed;
2307
2308         if (!lpfc_is_link_up(phba))
2309                 return;
2310
2311         if (phba->link_state == LPFC_CLEAR_LA)
2312                 clear_la_pending = 1;
2313         else
2314                 clear_la_pending = 0;
2315
2316         if (vport->port_state < LPFC_VPORT_READY)
2317                 vport->port_state = LPFC_DISC_AUTH;
2318
2319         lpfc_set_disctmo(vport);
2320
2321         if (vport->fc_prevDID == vport->fc_myDID)
2322                 did_changed = 0;
2323         else
2324                 did_changed = 1;
2325
2326         vport->fc_prevDID = vport->fc_myDID;
2327         vport->num_disc_nodes = 0;
2328
2329         /* Start Discovery state <hba_state> */
2330         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2331                          "0202 Start Discovery hba state x%x "
2332                          "Data: x%x x%x x%x\n",
2333                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2334                          vport->fc_adisc_cnt);
2335
2336         /* First do ADISCs - if any */
2337         num_sent = lpfc_els_disc_adisc(vport);
2338
2339         if (num_sent)
2340                 return;
2341
2342         /*
2343          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2344          * continue discovery.
2345          */
2346         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2347             !(vport->fc_flag & FC_RSCN_MODE)) {
2348                 lpfc_issue_reg_vpi(phba, vport);
2349                 return;
2350         }
2351
2352         /*
2353          * For SLI2, we need to set port_state to READY and continue
2354          * discovery.
2355          */
2356         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2357                 /* If we get here, there is nothing to ADISC */
2358                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2359                         lpfc_issue_clear_la(phba, vport);
2360
2361                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2362                         vport->num_disc_nodes = 0;
2363                         /* go thru NPR nodes and issue ELS PLOGIs */
2364                         if (vport->fc_npr_cnt)
2365                                 lpfc_els_disc_plogi(vport);
2366
2367                         if (!vport->num_disc_nodes) {
2368                                 spin_lock_irq(shost->host_lock);
2369                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2370                                 spin_unlock_irq(shost->host_lock);
2371                                 lpfc_can_disctmo(vport);
2372                         }
2373                 }
2374                 vport->port_state = LPFC_VPORT_READY;
2375         } else {
2376                 /* Next do PLOGIs - if any */
2377                 num_sent = lpfc_els_disc_plogi(vport);
2378
2379                 if (num_sent)
2380                         return;
2381
2382                 if (vport->fc_flag & FC_RSCN_MODE) {
2383                         /* Check to see if more RSCNs came in while we
2384                          * were processing this one.
2385                          */
2386                         if ((vport->fc_rscn_id_cnt == 0) &&
2387                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2388                                 spin_lock_irq(shost->host_lock);
2389                                 vport->fc_flag &= ~FC_RSCN_MODE;
2390                                 spin_unlock_irq(shost->host_lock);
2391                                 lpfc_can_disctmo(vport);
2392                         } else
2393                                 lpfc_els_handle_rscn(vport);
2394                 }
2395         }
2396         return;
2397 }
2398
2399 /*
2400  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2401  *  ring the match the sppecified nodelist.
2402  */
2403 static void
2404 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2405 {
2406         LIST_HEAD(completions);
2407         struct lpfc_sli *psli;
2408         IOCB_t     *icmd;
2409         struct lpfc_iocbq    *iocb, *next_iocb;
2410         struct lpfc_sli_ring *pring;
2411
2412         psli = &phba->sli;
2413         pring = &psli->ring[LPFC_ELS_RING];
2414
2415         /* Error matching iocb on txq or txcmplq
2416          * First check the txq.
2417          */
2418         spin_lock_irq(&phba->hbalock);
2419         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2420                 if (iocb->context1 != ndlp) {
2421                         continue;
2422                 }
2423                 icmd = &iocb->iocb;
2424                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2425                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2426
2427                         list_move_tail(&iocb->list, &completions);
2428                         pring->txq_cnt--;
2429                 }
2430         }
2431
2432         /* Next check the txcmplq */
2433         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2434                 if (iocb->context1 != ndlp) {
2435                         continue;
2436                 }
2437                 icmd = &iocb->iocb;
2438                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2439                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2440                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2441                 }
2442         }
2443         spin_unlock_irq(&phba->hbalock);
2444
2445         while (!list_empty(&completions)) {
2446                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2447                 list_del_init(&iocb->list);
2448
2449                 if (!iocb->iocb_cmpl)
2450                         lpfc_sli_release_iocbq(phba, iocb);
2451                 else {
2452                         icmd = &iocb->iocb;
2453                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2454                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2455                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2456                 }
2457         }
2458 }
2459
2460 static void
2461 lpfc_disc_flush_list(struct lpfc_vport *vport)
2462 {
2463         struct lpfc_nodelist *ndlp, *next_ndlp;
2464         struct lpfc_hba *phba = vport->phba;
2465
2466         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2467                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2468                                          nlp_listp) {
2469                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2470                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2471                                 lpfc_free_tx(phba, ndlp);
2472                         }
2473                 }
2474         }
2475 }
2476
2477 void
2478 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2479 {
2480         lpfc_els_flush_rscn(vport);
2481         lpfc_els_flush_cmd(vport);
2482         lpfc_disc_flush_list(vport);
2483 }
2484
2485 /*****************************************************************************/
2486 /*
2487  * NAME:     lpfc_disc_timeout
2488  *
2489  * FUNCTION: Fibre Channel driver discovery timeout routine.
2490  *
2491  * EXECUTION ENVIRONMENT: interrupt only
2492  *
2493  * CALLED FROM:
2494  *      Timer function
2495  *
2496  * RETURNS:
2497  *      none
2498  */
2499 /*****************************************************************************/
2500 void
2501 lpfc_disc_timeout(unsigned long ptr)
2502 {
2503         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2504         struct lpfc_hba   *phba = vport->phba;
2505         unsigned long flags = 0;
2506
2507         if (unlikely(!phba))
2508                 return;
2509
2510         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2511                 spin_lock_irqsave(&vport->work_port_lock, flags);
2512                 vport->work_port_events |= WORKER_DISC_TMO;
2513                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2514
2515                 spin_lock_irqsave(&phba->hbalock, flags);
2516                 if (phba->work_wait)
2517                         lpfc_worker_wake_up(phba);
2518                 spin_unlock_irqrestore(&phba->hbalock, flags);
2519         }
2520         return;
2521 }
2522
2523 static void
2524 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2525 {
2526         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2527         struct lpfc_hba  *phba = vport->phba;
2528         struct lpfc_sli  *psli = &phba->sli;
2529         struct lpfc_nodelist *ndlp, *next_ndlp;
2530         LPFC_MBOXQ_t *initlinkmbox;
2531         int rc, clrlaerr = 0;
2532
2533         if (!(vport->fc_flag & FC_DISC_TMO))
2534                 return;
2535
2536         spin_lock_irq(shost->host_lock);
2537         vport->fc_flag &= ~FC_DISC_TMO;
2538         spin_unlock_irq(shost->host_lock);
2539
2540         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2541                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2542                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2543
2544         switch (vport->port_state) {
2545
2546         case LPFC_LOCAL_CFG_LINK:
2547         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2548          * FAN
2549          */
2550                                 /* FAN timeout */
2551                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2552                                  "0221 FAN timeout\n");
2553                 /* Start discovery by sending FLOGI, clean up old rpis */
2554                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2555                                          nlp_listp) {
2556                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2557                                 continue;
2558                         if (ndlp->nlp_type & NLP_FABRIC) {
2559                                 /* Clean up the ndlp on Fabric connections */
2560                                 lpfc_drop_node(vport, ndlp);
2561
2562                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2563                                 /* Fail outstanding IO now since device
2564                                  * is marked for PLOGI.
2565                                  */
2566                                 lpfc_unreg_rpi(vport, ndlp);
2567                         }
2568                 }
2569                 if (vport->port_state != LPFC_FLOGI) {
2570                         lpfc_initial_flogi(vport);
2571                         return;
2572                 }
2573                 break;
2574
2575         case LPFC_FDISC:
2576         case LPFC_FLOGI:
2577         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2578                 /* Initial FLOGI timeout */
2579                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2580                                  "0222 Initial %s timeout\n",
2581                                  vport->vpi ? "FDISC" : "FLOGI");
2582
2583                 /* Assume no Fabric and go on with discovery.
2584                  * Check for outstanding ELS FLOGI to abort.
2585                  */
2586
2587                 /* FLOGI failed, so just use loop map to make discovery list */
2588                 lpfc_disc_list_loopmap(vport);
2589
2590                 /* Start discovery */
2591                 lpfc_disc_start(vport);
2592                 break;
2593
2594         case LPFC_FABRIC_CFG_LINK:
2595         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2596            NameServer login */
2597                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2598                                  "0223 Timeout while waiting for "
2599                                  "NameServer login\n");
2600                 /* Next look for NameServer ndlp */
2601                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2602                 if (ndlp)
2603                         lpfc_els_abort(phba, ndlp);
2604
2605                 /* ReStart discovery */
2606                 goto restart_disc;
2607
2608         case LPFC_NS_QRY:
2609         /* Check for wait for NameServer Rsp timeout */
2610                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2611                                  "0224 NameServer Query timeout "
2612                                  "Data: x%x x%x\n",
2613                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2614
2615                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2616                         /* Try it one more time */
2617                         vport->fc_ns_retry++;
2618                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2619                                          vport->fc_ns_retry, 0);
2620                         if (rc == 0)
2621                                 break;
2622                 }
2623                 vport->fc_ns_retry = 0;
2624
2625 restart_disc:
2626                 /*
2627                  * Discovery is over.
2628                  * set port_state to PORT_READY if SLI2.
2629                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2630                  */
2631                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2632                         lpfc_issue_reg_vpi(phba, vport);
2633                 else  { /* NPIV Not enabled */
2634                         lpfc_issue_clear_la(phba, vport);
2635                         vport->port_state = LPFC_VPORT_READY;
2636                 }
2637
2638                 /* Setup and issue mailbox INITIALIZE LINK command */
2639                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2640                 if (!initlinkmbox) {
2641                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2642                                          "0206 Device Discovery "
2643                                          "completion error\n");
2644                         phba->link_state = LPFC_HBA_ERROR;
2645                         break;
2646                 }
2647
2648                 lpfc_linkdown(phba);
2649                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2650                                phba->cfg_link_speed);
2651                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2652                 initlinkmbox->vport = vport;
2653                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2654                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2655                 lpfc_set_loopback_flag(phba);
2656                 if (rc == MBX_NOT_FINISHED)
2657                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2658
2659                 break;
2660
2661         case LPFC_DISC_AUTH:
2662         /* Node Authentication timeout */
2663                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2664                                  "0227 Node Authentication timeout\n");
2665                 lpfc_disc_flush_list(vport);
2666
2667                 /*
2668                  * set port_state to PORT_READY if SLI2.
2669                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2670                  */
2671                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2672                         lpfc_issue_reg_vpi(phba, vport);
2673                 else {  /* NPIV Not enabled */
2674                         lpfc_issue_clear_la(phba, vport);
2675                         vport->port_state = LPFC_VPORT_READY;
2676                 }
2677                 break;
2678
2679         case LPFC_VPORT_READY:
2680                 if (vport->fc_flag & FC_RSCN_MODE) {
2681                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2682                                          "0231 RSCN timeout Data: x%x "
2683                                          "x%x\n",
2684                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2685
2686                         /* Cleanup any outstanding ELS commands */
2687                         lpfc_els_flush_cmd(vport);
2688
2689                         lpfc_els_flush_rscn(vport);
2690                         lpfc_disc_flush_list(vport);
2691                 }
2692                 break;
2693
2694         default:
2695                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2696                                  "0229 Unexpected discovery timeout, "
2697                                  "vport State x%x\n", vport->port_state);
2698                 break;
2699         }
2700
2701         switch (phba->link_state) {
2702         case LPFC_CLEAR_LA:
2703                                 /* CLEAR LA timeout */
2704                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2705                                  "0228 CLEAR LA timeout\n");
2706                 clrlaerr = 1;
2707                 break;
2708
2709         case LPFC_LINK_UP:
2710                 lpfc_issue_clear_la(phba, vport);
2711                 /* Drop thru */
2712         case LPFC_LINK_UNKNOWN:
2713         case LPFC_WARM_START:
2714         case LPFC_INIT_START:
2715         case LPFC_INIT_MBX_CMDS:
2716         case LPFC_LINK_DOWN:
2717         case LPFC_HBA_ERROR:
2718                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2719                                  "0230 Unexpected timeout, hba link "
2720                                  "state x%x\n", phba->link_state);
2721                 clrlaerr = 1;
2722                 break;
2723
2724         case LPFC_HBA_READY:
2725                 break;
2726         }
2727
2728         if (clrlaerr) {
2729                 lpfc_disc_flush_list(vport);
2730                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2731                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2732                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2733                 vport->port_state = LPFC_VPORT_READY;
2734         }
2735
2736         return;
2737 }
2738
2739 /*
2740  * This routine handles processing a NameServer REG_LOGIN mailbox
2741  * command upon completion. It is setup in the LPFC_MBOXQ
2742  * as the completion routine when the command is
2743  * handed off to the SLI layer.
2744  */
2745 void
2746 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2747 {
2748         MAILBOX_t *mb = &pmb->mb;
2749         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2750         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2751         struct lpfc_vport    *vport = pmb->vport;
2752
2753         pmb->context1 = NULL;
2754
2755         ndlp->nlp_rpi = mb->un.varWords[0];
2756         ndlp->nlp_type |= NLP_FABRIC;
2757         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2758
2759         /*
2760          * Start issuing Fabric-Device Management Interface (FDMI) command to
2761          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2762          * fdmi-on=2 (supporting RPA/hostnmae)
2763          */
2764
2765         if (vport->cfg_fdmi_on == 1)
2766                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2767         else
2768                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2769
2770                                 /* Mailbox took a reference to the node */
2771         lpfc_nlp_put(ndlp);
2772         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2773         kfree(mp);
2774         mempool_free(pmb, phba->mbox_mem_pool);
2775
2776         return;
2777 }
2778
2779 static int
2780 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2781 {
2782         uint16_t *rpi = param;
2783
2784         return ndlp->nlp_rpi == *rpi;
2785 }
2786
2787 static int
2788 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2789 {
2790         return memcmp(&ndlp->nlp_portname, param,
2791                       sizeof(ndlp->nlp_portname)) == 0;
2792 }
2793
2794 static struct lpfc_nodelist *
2795 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2796 {
2797         struct lpfc_nodelist *ndlp;
2798
2799         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2800                 if (filter(ndlp, param))
2801                         return ndlp;
2802         }
2803         return NULL;
2804 }
2805
2806 #if 0
2807 /*
2808  * Search node lists for a remote port matching filter criteria
2809  * Caller needs to hold host_lock before calling this routine.
2810  */
2811 struct lpfc_nodelist *
2812 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2813 {
2814         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2815         struct lpfc_nodelist *ndlp;
2816
2817         spin_lock_irq(shost->host_lock);
2818         ndlp = __lpfc_find_node(vport, filter, param);
2819         spin_unlock_irq(shost->host_lock);
2820         return ndlp;
2821 }
2822 #endif  /*  0  */
2823
2824 /*
2825  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2826  * returns the node list element pointer else return NULL.
2827  */
2828 struct lpfc_nodelist *
2829 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2830 {
2831         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2832 }
2833
2834 #if 0
2835 struct lpfc_nodelist *
2836 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2837 {
2838         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2839         struct lpfc_nodelist *ndlp;
2840
2841         spin_lock_irq(shost->host_lock);
2842         ndlp = __lpfc_findnode_rpi(vport, rpi);
2843         spin_unlock_irq(shost->host_lock);
2844         return ndlp;
2845 }
2846 #endif  /*  0  */
2847
2848 /*
2849  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2850  * returns the node element list pointer else return NULL.
2851  */
2852 struct lpfc_nodelist *
2853 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2854 {
2855         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2856         struct lpfc_nodelist *ndlp;
2857
2858         spin_lock_irq(shost->host_lock);
2859         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2860         spin_unlock_irq(shost->host_lock);
2861         return ndlp;
2862 }
2863
2864 void
2865 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2866               uint32_t did)
2867 {
2868         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2869         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2870         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2871         init_timer(&ndlp->nlp_delayfunc);
2872         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2873         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2874         ndlp->nlp_DID = did;
2875         ndlp->vport = vport;
2876         ndlp->nlp_sid = NLP_NO_SID;
2877         INIT_LIST_HEAD(&ndlp->nlp_listp);
2878         kref_init(&ndlp->kref);
2879
2880         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2881                 "node init:       did:x%x",
2882                 ndlp->nlp_DID, 0, 0);
2883
2884         return;
2885 }
2886
2887 /* This routine releases all resources associated with a specifc NPort's ndlp
2888  * and mempool_free's the nodelist.
2889  */
2890 static void
2891 lpfc_nlp_release(struct kref *kref)
2892 {
2893         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2894                                                   kref);
2895
2896         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2897                 "node release:    did:x%x flg:x%x type:x%x",
2898                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2899
2900         lpfc_nlp_remove(ndlp->vport, ndlp);
2901         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2902 }
2903
2904 /* This routine bumps the reference count for a ndlp structure to ensure
2905  * that one discovery thread won't free a ndlp while another discovery thread
2906  * is using it.
2907  */
2908 struct lpfc_nodelist *
2909 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2910 {
2911         if (ndlp) {
2912                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2913                         "node get:        did:x%x flg:x%x refcnt:x%x",
2914                         ndlp->nlp_DID, ndlp->nlp_flag,
2915                         atomic_read(&ndlp->kref.refcount));
2916                 kref_get(&ndlp->kref);
2917         }
2918         return ndlp;
2919 }
2920
2921
2922 /* This routine decrements the reference count for a ndlp structure. If the
2923  * count goes to 0, this indicates the the associated nodelist should be freed.
2924  */
2925 int
2926 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2927 {
2928         if (ndlp) {
2929                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2930                 "node put:        did:x%x flg:x%x refcnt:x%x",
2931                         ndlp->nlp_DID, ndlp->nlp_flag,
2932                         atomic_read(&ndlp->kref.refcount));
2933         }
2934         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2935 }
2936
2937 /* This routine free's the specified nodelist if it is not in use
2938  * by any other discovery thread. This routine returns 1 if the ndlp
2939  * is not being used by anyone and has been freed. A return value of
2940  * 0 indicates it is being used by another discovery thread and the
2941  * refcount is left unchanged.
2942  */
2943 int
2944 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
2945 {
2946         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2947                 "node not used:   did:x%x flg:x%x refcnt:x%x",
2948                 ndlp->nlp_DID, ndlp->nlp_flag,
2949                 atomic_read(&ndlp->kref.refcount));
2950
2951         if (atomic_read(&ndlp->kref.refcount) == 1) {
2952                 lpfc_nlp_put(ndlp);
2953                 return 1;
2954         }
2955         return 0;
2956 }
2957