drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_vport.h"
  40 #include "lpfc_debugfs.h"
  41
  42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  43 static uint8_t lpfcAlpaArray[] = {
  44         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  45         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  46         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  47         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  48         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  49         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  50         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  51         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  52         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  53         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  54         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  55         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  56         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  57 };
  58
  59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  60
  61 void
  62 lpfc_terminate_rport_io(struct fc_rport *rport)
  63 {
  64         struct lpfc_rport_data *rdata;
  65         struct lpfc_nodelist * ndlp;
  66         struct lpfc_hba *phba;
  67
  68         rdata = rport->dd_data;
  69         ndlp = rdata->pnode;
  70
  71         if (!ndlp) {
  72                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  73                         printk(KERN_ERR "Cannot find remote node"
  74                         " to terminate I/O Data x%x\n",
  75                         rport->port_id);
  76                 return;
  77         }
  78
  79         phba  = ndlp->vport->phba;
  80
  81         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  82                 "rport terminate: sid:x%x did:x%x flg:x%x",
  83                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  84
  85         if (ndlp->nlp_sid != NLP_NO_SID) {
  86                 lpfc_sli_abort_iocb(ndlp->vport,
  87                         &phba->sli.ring[phba->sli.fcp_ring],
  88                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  89         }
  90
  91         /*
  92          * A device is normally blocked for rediscovery and unblocked when
  93          * devloss timeout happens.  In case a vport is removed or driver
  94          * unloaded before devloss timeout happens, we need to unblock here.
  95          */
  96         scsi_target_unblock(&rport->dev);
  97         return;
  98 }
  99
 100 /*
 101  * This function will be called when dev_loss_tmo fire.
 102  */
 103 void
 104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 105 {
 106         struct lpfc_rport_data *rdata;
 107         struct lpfc_nodelist * ndlp;
 108         struct lpfc_vport *vport;
 109         struct lpfc_hba   *phba;
 110         struct completion devloss_compl;
 111         struct lpfc_work_evt *evtp;
 112
 113         rdata = rport->dd_data;
 114         ndlp = rdata->pnode;
 115
 116         if (!ndlp) {
 117                 if (rport->scsi_target_id != -1) {
 118                         printk(KERN_ERR "Cannot find remote node"
 119                                 " for rport in dev_loss_tmo_callbk x%x\n",
 120                                 rport->port_id);
 121                 }
 122                 return;
 123         }
 124
 125         vport = ndlp->vport;
 126         phba  = vport->phba;
 127
 128         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 129                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 130                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 131
 132         init_completion(&devloss_compl);
 133         evtp = &ndlp->dev_loss_evt;
 134
 135         if (!list_empty(&evtp->evt_listp))
 136                 return;
 137
 138         spin_lock_irq(&phba->hbalock);
 139         evtp->evt_arg1  = ndlp;
 140         evtp->evt_arg2  = &devloss_compl;
 141         evtp->evt       = LPFC_EVT_DEV_LOSS;
 142         list_add_tail(&evtp->evt_listp, &phba->work_list);
 143         if (phba->work_wait)
 144                 wake_up(phba->work_wait);
 145
 146         spin_unlock_irq(&phba->hbalock);
 147
 148         wait_for_completion(&devloss_compl);
 149
 150         return;
 151 }
 152
 153 /*
 154  * This function is called from the worker thread when dev_loss_tmo
 155  * expire.
 156  */
 157 void
 158 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 159 {
 160         struct lpfc_rport_data *rdata;
 161         struct fc_rport   *rport;
 162         struct lpfc_vport *vport;
 163         struct lpfc_hba   *phba;
 164         uint8_t *name;
 165         int warn_on = 0;
 166
 167         rport = ndlp->rport;
 168
 169         if (!rport)
 170                 return;
 171
 172         rdata = rport->dd_data;
 173         name = (uint8_t *) &ndlp->nlp_portname;
 174         vport = ndlp->vport;
 175         phba  = vport->phba;
 176
 177         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 178                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 179                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 180
 181         if (!(vport->load_flag & FC_UNLOADING) &&
 182             ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 183                 return;
 184
 185         if (ndlp->nlp_type & NLP_FABRIC) {
 186                 int  put_node;
 187                 int  put_rport;
 188
 189                 /* We will clean up these Nodes in linkup */
 190                 put_node = rdata->pnode != NULL;
 191                 put_rport = ndlp->rport != NULL;
 192                 rdata->pnode = NULL;
 193                 ndlp->rport = NULL;
 194                 if (put_node)
 195                         lpfc_nlp_put(ndlp);
 196                 if (put_rport)
 197                         put_device(&rport->dev);
 198                 return;
 199         }
 200
 201         if (ndlp->nlp_sid != NLP_NO_SID) {
 202                 warn_on = 1;
 203                 /* flush the target */
 204                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 205                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 206         }
 207         if (vport->load_flag & FC_UNLOADING)
 208                 warn_on = 0;
 209
 210         if (warn_on) {
 211                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 212                                  "0203 Devloss timeout on "
 213                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 214                                  "NPort x%x Data: x%x x%x x%x\n",
 215                                  *name, *(name+1), *(name+2), *(name+3),
 216                                  *(name+4), *(name+5), *(name+6), *(name+7),
 217                                  ndlp->nlp_DID, ndlp->nlp_flag,
 218                                  ndlp->nlp_state, ndlp->nlp_rpi);
 219         } else {
 220                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 221                                  "0204 Devloss timeout on "
 222                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 223                                  "NPort x%x Data: x%x x%x x%x\n",
 224                                  *name, *(name+1), *(name+2), *(name+3),
 225                                  *(name+4), *(name+5), *(name+6), *(name+7),
 226                                  ndlp->nlp_DID, ndlp->nlp_flag,
 227                                  ndlp->nlp_state, ndlp->nlp_rpi);
 228         }
 229
 230         if (!(vport->load_flag & FC_UNLOADING) &&
 231             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 232             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 233             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 234                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 235         else {
 236                 int  put_node;
 237                 int  put_rport;
 238
 239                 put_node = rdata->pnode != NULL;
 240                 put_rport = ndlp->rport != NULL;
 241                 rdata->pnode = NULL;
 242                 ndlp->rport = NULL;
 243                 if (put_node)
 244                         lpfc_nlp_put(ndlp);
 245                 if (put_rport)
 246                         put_device(&rport->dev);
 247         }
 248 }
 249
 250
 251 void
 252 lpfc_worker_wake_up(struct lpfc_hba *phba)
 253 {
 254         wake_up(phba->work_wait);
 255         return;
 256 }
 257
 258 static void
 259 lpfc_work_list_done(struct lpfc_hba *phba)
 260 {
 261         struct lpfc_work_evt  *evtp = NULL;
 262         struct lpfc_nodelist  *ndlp;
 263         struct lpfc_vport     *vport;
 264         int free_evt;
 265
 266         spin_lock_irq(&phba->hbalock);
 267         while (!list_empty(&phba->work_list)) {
 268                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 269                                  evt_listp);
 270                 spin_unlock_irq(&phba->hbalock);
 271                 free_evt = 1;
 272                 switch (evtp->evt) {
 273                 case LPFC_EVT_DEV_LOSS_DELAY:
 274                         free_evt = 0; /* evt is part of ndlp */
 275                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 276                         vport = ndlp->vport;
 277                         if (!vport)
 278                                 break;
 279
 280                         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 281                                 "rport devlossdly:did:x%x flg:x%x",
 282                                 ndlp->nlp_DID, ndlp->nlp_flag, 0);
 283
 284                         if (!(vport->load_flag & FC_UNLOADING) &&
 285                             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 286                             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
 287                                 lpfc_disc_state_machine(vport, ndlp, NULL,
 288                                         NLP_EVT_DEVICE_RM);
 289                         }
 290                         break;
 291                 case LPFC_EVT_ELS_RETRY:
 292                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 293                         lpfc_els_retry_delay_handler(ndlp);
 294                         free_evt = 0; /* evt is part of ndlp */
 295                         break;
 296                 case LPFC_EVT_DEV_LOSS:
 297                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 298                         lpfc_nlp_get(ndlp);
 299                         lpfc_dev_loss_tmo_handler(ndlp);
 300                         free_evt = 0;
 301                         complete((struct completion *)(evtp->evt_arg2));
 302                         lpfc_nlp_put(ndlp);
 303                         break;
 304                 case LPFC_EVT_ONLINE:
 305                         if (phba->link_state < LPFC_LINK_DOWN)
 306                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 307                         else
 308                                 *(int *) (evtp->evt_arg1) = 0;
 309                         complete((struct completion *)(evtp->evt_arg2));
 310                         break;
 311                 case LPFC_EVT_OFFLINE_PREP:
 312                         if (phba->link_state >= LPFC_LINK_DOWN)
 313                                 lpfc_offline_prep(phba);
 314                         *(int *)(evtp->evt_arg1) = 0;
 315                         complete((struct completion *)(evtp->evt_arg2));
 316                         break;
 317                 case LPFC_EVT_OFFLINE:
 318                         lpfc_offline(phba);
 319                         lpfc_sli_brdrestart(phba);
 320                         *(int *)(evtp->evt_arg1) =
 321                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 322                         lpfc_unblock_mgmt_io(phba);
 323                         complete((struct completion *)(evtp->evt_arg2));
 324                         break;
 325                 case LPFC_EVT_WARM_START:
 326                         lpfc_offline(phba);
 327                         lpfc_reset_barrier(phba);
 328                         lpfc_sli_brdreset(phba);
 329                         lpfc_hba_down_post(phba);
 330                         *(int *)(evtp->evt_arg1) =
 331                                 lpfc_sli_brdready(phba, HS_MBRDY);
 332                         lpfc_unblock_mgmt_io(phba);
 333                         complete((struct completion *)(evtp->evt_arg2));
 334                         break;
 335                 case LPFC_EVT_KILL:
 336                         lpfc_offline(phba);
 337                         *(int *)(evtp->evt_arg1)
 338                                 = (phba->pport->stopped)
 339                                         ? 0 : lpfc_sli_brdkill(phba);
 340                         lpfc_unblock_mgmt_io(phba);
 341                         complete((struct completion *)(evtp->evt_arg2));
 342                         break;
 343                 }
 344                 if (free_evt)
 345                         kfree(evtp);
 346                 spin_lock_irq(&phba->hbalock);
 347         }
 348         spin_unlock_irq(&phba->hbalock);
 349
 350 }
 351
 352 static void
 353 lpfc_work_done(struct lpfc_hba *phba)
 354 {
 355         struct lpfc_sli_ring *pring;
 356         uint32_t ha_copy, status, control, work_port_events;
 357         struct lpfc_vport **vports;
 358         struct lpfc_vport *vport;
 359         int i;
 360
 361         spin_lock_irq(&phba->hbalock);
 362         ha_copy = phba->work_ha;
 363         phba->work_ha = 0;
 364         spin_unlock_irq(&phba->hbalock);
 365
 366         if (ha_copy & HA_ERATT)
 367                 lpfc_handle_eratt(phba);
 368
 369         if (ha_copy & HA_MBATT)
 370                 lpfc_sli_handle_mb_event(phba);
 371
 372         if (ha_copy & HA_LATT)
 373                 lpfc_handle_latt(phba);
 374         vports = lpfc_create_vport_work_array(phba);
 375         if (vports != NULL)
 376                 for(i = 0; i < LPFC_MAX_VPORTS; i++) {
 377                         /*
 378                          * We could have no vports in array if unloading, so if
 379                          * this happens then just use the pport
 380                          */
 381                         if (vports[i] == NULL && i == 0)
 382                                 vport = phba->pport;
 383                         else
 384                                 vport = vports[i];
 385                         if (vport == NULL)
 386                                 break;
 387                         work_port_events = vport->work_port_events;
 388                         if (work_port_events & WORKER_DISC_TMO)
 389                                 lpfc_disc_timeout_handler(vport);
 390                         if (work_port_events & WORKER_ELS_TMO)
 391                                 lpfc_els_timeout_handler(vport);
 392                         if (work_port_events & WORKER_HB_TMO)
 393                                 lpfc_hb_timeout_handler(phba);
 394                         if (work_port_events & WORKER_MBOX_TMO)
 395                                 lpfc_mbox_timeout_handler(phba);
 396                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 397                                 lpfc_unblock_fabric_iocbs(phba);
 398                         if (work_port_events & WORKER_FDMI_TMO)
 399                                 lpfc_fdmi_timeout_handler(vport);
 400                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 401                                 lpfc_ramp_down_queue_handler(phba);
 402                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 403                                 lpfc_ramp_up_queue_handler(phba);
 404                         spin_lock_irq(&vport->work_port_lock);
 405                         vport->work_port_events &= ~work_port_events;
 406                         spin_unlock_irq(&vport->work_port_lock);
 407                 }
 408         lpfc_destroy_vport_work_array(vports);
 409
 410         pring = &phba->sli.ring[LPFC_ELS_RING];
 411         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 412         status >>= (4*LPFC_ELS_RING);
 413         if ((status & HA_RXMASK)
 414                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 415                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 416                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 417                 } else {
 418                         lpfc_sli_handle_slow_ring_event(phba, pring,
 419                                                         (status &
 420                                                          HA_RXMASK));
 421                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 422                 }
 423                 /*
 424                  * Turn on Ring interrupts
 425                  */
 426                 spin_lock_irq(&phba->hbalock);
 427                 control = readl(phba->HCregaddr);
 428                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 429                         lpfc_debugfs_slow_ring_trc(phba,
 430                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 431                                 control, ha_copy, 0);
 432
 433                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 434                         writel(control, phba->HCregaddr);
 435                         readl(phba->HCregaddr); /* flush */
 436                 }
 437                 else {
 438                         lpfc_debugfs_slow_ring_trc(phba,
 439                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 440                                 control, ha_copy, 0);
 441                 }
 442                 spin_unlock_irq(&phba->hbalock);
 443         }
 444         lpfc_work_list_done(phba);
 445 }
 446
 447 static int
 448 check_work_wait_done(struct lpfc_hba *phba)
 449 {
 450         struct lpfc_vport *vport;
 451         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 452         int rc = 0;
 453
 454         spin_lock_irq(&phba->hbalock);
 455         list_for_each_entry(vport, &phba->port_list, listentry) {
 456                 if (vport->work_port_events) {
 457                         rc = 1;
 458                         break;
 459                 }
 460         }
 461         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 462             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 463                 rc = 1;
 464                 phba->work_found++;
 465         } else
 466                 phba->work_found = 0;
 467         spin_unlock_irq(&phba->hbalock);
 468         return rc;
 469 }
 470
 471
 472 int
 473 lpfc_do_work(void *p)
 474 {
 475         struct lpfc_hba *phba = p;
 476         int rc;
 477         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 478
 479         set_user_nice(current, -20);
 480         phba->work_wait = &work_waitq;
 481         phba->work_found = 0;
 482
 483         while (1) {
 484
 485                 rc = wait_event_interruptible(work_waitq,
 486                                               check_work_wait_done(phba));
 487
 488                 BUG_ON(rc);
 489
 490                 if (kthread_should_stop())
 491                         break;
 492
 493                 lpfc_work_done(phba);
 494
 495                 /* If there is alot of slow ring work, like during link up
 496                  * check_work_wait_done() may cause this thread to not give
 497                  * up the CPU for very long periods of time. This may cause
 498                  * soft lockups or other problems. To avoid these situations
 499                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 500                  * consecutive iterations.
 501                  */
 502                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 503                         phba->work_found = 0;
 504                         schedule();
 505                 }
 506         }
 507         phba->work_wait = NULL;
 508         return 0;
 509 }
 510
 511 /*
 512  * This is only called to handle FC worker events. Since this a rare
 513  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 514  * embedding it in the IOCB.
 515  */
 516 int
 517 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 518                       uint32_t evt)
 519 {
 520         struct lpfc_work_evt  *evtp;
 521         unsigned long flags;
 522
 523         /*
 524          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 525          * be queued to worker thread for processing
 526          */
 527         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 528         if (!evtp)
 529                 return 0;
 530
 531         evtp->evt_arg1  = arg1;
 532         evtp->evt_arg2  = arg2;
 533         evtp->evt       = evt;
 534
 535         spin_lock_irqsave(&phba->hbalock, flags);
 536         list_add_tail(&evtp->evt_listp, &phba->work_list);
 537         if (phba->work_wait)
 538                 lpfc_worker_wake_up(phba);
 539         spin_unlock_irqrestore(&phba->hbalock, flags);
 540
 541         return 1;
 542 }
 543
 544 void
 545 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 546 {
 547         struct lpfc_hba  *phba = vport->phba;
 548         struct lpfc_nodelist *ndlp, *next_ndlp;
 549         int  rc;
 550
 551         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 552                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 553                         continue;
 554
 555                 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN)
 556                         lpfc_unreg_rpi(vport, ndlp);
 557
 558                 /* Leave Fabric nodes alone on link down */
 559                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 560                         continue;
 561                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 562                                              remove
 563                                              ? NLP_EVT_DEVICE_RM
 564                                              : NLP_EVT_DEVICE_RECOVERY);
 565         }
 566         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 567                 lpfc_mbx_unreg_vpi(vport);
 568                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 569         }
 570 }
 571
 572 static void
 573 lpfc_linkdown_port(struct lpfc_vport *vport)
 574 {
 575         struct lpfc_nodelist *ndlp, *next_ndlp;
 576         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 577
 578         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 579
 580         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 581                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 582                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 583
 584         /* Cleanup any outstanding RSCN activity */
 585         lpfc_els_flush_rscn(vport);
 586
 587         /* Cleanup any outstanding ELS commands */
 588         lpfc_els_flush_cmd(vport);
 589
 590         lpfc_cleanup_rpis(vport, 0);
 591
 592         /* free any ndlp's on unused list */
 593         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
 594                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 595                         lpfc_drop_node(vport, ndlp);
 596
 597         /* Turn off discovery timer if its running */
 598         lpfc_can_disctmo(vport);
 599 }
 600
 601 int
 602 lpfc_linkdown(struct lpfc_hba *phba)
 603 {
 604         struct lpfc_vport *vport = phba->pport;
 605         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 606         struct lpfc_vport **vports;
 607         LPFC_MBOXQ_t          *mb;
 608         int i;
 609
 610         if (phba->link_state == LPFC_LINK_DOWN) {
 611                 return 0;
 612         }
 613         spin_lock_irq(&phba->hbalock);
 614         if (phba->link_state > LPFC_LINK_DOWN) {
 615                 phba->link_state = LPFC_LINK_DOWN;
 616                 phba->pport->fc_flag &= ~FC_LBIT;
 617         }
 618         spin_unlock_irq(&phba->hbalock);
 619         vports = lpfc_create_vport_work_array(phba);
 620         if (vports != NULL)
 621                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 622                         /* Issue a LINK DOWN event to all nodes */
 623                         lpfc_linkdown_port(vports[i]);
 624                 }
 625         lpfc_destroy_vport_work_array(vports);
 626         /* Clean up any firmware default rpi's */
 627         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 628         if (mb) {
 629                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 630                 mb->vport = vport;
 631                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 632                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 633                     == MBX_NOT_FINISHED) {
 634                         mempool_free(mb, phba->mbox_mem_pool);
 635                 }
 636         }
 637
 638         /* Setup myDID for link up if we are in pt2pt mode */
 639         if (phba->pport->fc_flag & FC_PT2PT) {
 640                 phba->pport->fc_myDID = 0;
 641                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 642                 if (mb) {
 643                         lpfc_config_link(phba, mb);
 644                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 645                         mb->vport = vport;
 646                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 647                             == MBX_NOT_FINISHED) {
 648                                 mempool_free(mb, phba->mbox_mem_pool);
 649                         }
 650                 }
 651                 spin_lock_irq(shost->host_lock);
 652                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 653                 spin_unlock_irq(shost->host_lock);
 654         }
 655
 656         return 0;
 657 }
 658
 659 static void
 660 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 661 {
 662         struct lpfc_nodelist *ndlp;
 663
 664         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 665                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 666                         continue;
 667
 668                 if (ndlp->nlp_type & NLP_FABRIC) {
 669                                 /* On Linkup its safe to clean up the ndlp
 670                                  * from Fabric connections.
 671                                  */
 672                         if (ndlp->nlp_DID != Fabric_DID)
 673                                 lpfc_unreg_rpi(vport, ndlp);
 674                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 675                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 676                                 /* Fail outstanding IO now since device is
 677                                  * marked for PLOGI.
 678                                  */
 679                         lpfc_unreg_rpi(vport, ndlp);
 680                 }
 681         }
 682 }
 683
 684 static void
 685 lpfc_linkup_port(struct lpfc_vport *vport)
 686 {
 687         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 688         struct lpfc_nodelist *ndlp, *next_ndlp;
 689         struct lpfc_hba  *phba = vport->phba;
 690
 691         if ((vport->load_flag & FC_UNLOADING) != 0)
 692                 return;
 693
 694         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 695                 "Link Up:         top:x%x speed:x%x flg:x%x",
 696                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 697
 698         /* If NPIV is not enabled, only bring the physical port up */
 699         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 700                 (vport != phba->pport))
 701                 return;
 702
 703         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 704
 705         spin_lock_irq(shost->host_lock);
 706         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 707                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 708         vport->fc_flag |= FC_NDISC_ACTIVE;
 709         vport->fc_ns_retry = 0;
 710         spin_unlock_irq(shost->host_lock);
 711
 712         if (vport->fc_flag & FC_LBIT)
 713                 lpfc_linkup_cleanup_nodes(vport);
 714
 715                                 /* free any ndlp's in unused state */
 716         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
 717                                  nlp_listp)
 718                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 719                         lpfc_drop_node(vport, ndlp);
 720 }
 721
 722 static int
 723 lpfc_linkup(struct lpfc_hba *phba)
 724 {
 725         struct lpfc_vport **vports;
 726         int i;
 727
 728         phba->link_state = LPFC_LINK_UP;
 729
 730         /* Unblock fabric iocbs if they are blocked */
 731         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 732         del_timer_sync(&phba->fabric_block_timer);
 733
 734         vports = lpfc_create_vport_work_array(phba);
 735         if (vports != NULL)
 736                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
 737                         lpfc_linkup_port(vports[i]);
 738         lpfc_destroy_vport_work_array(vports);
 739         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 740                 lpfc_issue_clear_la(phba, phba->pport);
 741
 742         return 0;
 743 }
 744
 745 /*
 746  * This routine handles processing a CLEAR_LA mailbox
 747  * command upon completion. It is setup in the LPFC_MBOXQ
 748  * as the completion routine when the command is
 749  * handed off to the SLI layer.
 750  */
 751 void
 752 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 753 {
 754         struct lpfc_vport *vport = pmb->vport;
 755         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 756         struct lpfc_sli   *psli = &phba->sli;
 757         MAILBOX_t *mb = &pmb->mb;
 758         uint32_t control;
 759
 760         /* Since we don't do discovery right now, turn these off here */
 761         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 762         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 763         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 764
 765         /* Check for error */
 766         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 767                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 768                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 769                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 770                                  "state x%x\n",
 771                                  mb->mbxStatus, vport->port_state);
 772                 phba->link_state = LPFC_HBA_ERROR;
 773                 goto out;
 774         }
 775
 776         if (vport->port_type == LPFC_PHYSICAL_PORT)
 777                 phba->link_state = LPFC_HBA_READY;
 778
 779         spin_lock_irq(&phba->hbalock);
 780         psli->sli_flag |= LPFC_PROCESS_LA;
 781         control = readl(phba->HCregaddr);
 782         control |= HC_LAINT_ENA;
 783         writel(control, phba->HCregaddr);
 784         readl(phba->HCregaddr); /* flush */
 785         spin_unlock_irq(&phba->hbalock);
 786         return;
 787
 788         vport->num_disc_nodes = 0;
 789         /* go thru NPR nodes and issue ELS PLOGIs */
 790         if (vport->fc_npr_cnt)
 791                 lpfc_els_disc_plogi(vport);
 792
 793         if (!vport->num_disc_nodes) {
 794                 spin_lock_irq(shost->host_lock);
 795                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 796                 spin_unlock_irq(shost->host_lock);
 797         }
 798
 799         vport->port_state = LPFC_VPORT_READY;
 800
 801 out:
 802         /* Device Discovery completes */
 803         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 804                          "0225 Device Discovery completes\n");
 805         mempool_free(pmb, phba->mbox_mem_pool);
 806
 807         spin_lock_irq(shost->host_lock);
 808         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 809         spin_unlock_irq(shost->host_lock);
 810
 811         del_timer_sync(&phba->fc_estabtmo);
 812
 813         lpfc_can_disctmo(vport);
 814
 815         /* turn on Link Attention interrupts */
 816
 817         spin_lock_irq(&phba->hbalock);
 818         psli->sli_flag |= LPFC_PROCESS_LA;
 819         control = readl(phba->HCregaddr);
 820         control |= HC_LAINT_ENA;
 821         writel(control, phba->HCregaddr);
 822         readl(phba->HCregaddr); /* flush */
 823         spin_unlock_irq(&phba->hbalock);
 824
 825         return;
 826 }
 827
 828
 829 static void
 830 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 831 {
 832         struct lpfc_vport *vport = pmb->vport;
 833
 834         if (pmb->mb.mbxStatus)
 835                 goto out;
 836
 837         mempool_free(pmb, phba->mbox_mem_pool);
 838
 839         if (phba->fc_topology == TOPOLOGY_LOOP &&
 840             vport->fc_flag & FC_PUBLIC_LOOP &&
 841             !(vport->fc_flag & FC_LBIT)) {
 842                         /* Need to wait for FAN - use discovery timer
 843                          * for timeout.  port_state is identically
 844                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 845                          */
 846                         lpfc_set_disctmo(vport);
 847                         return;
 848         }
 849
 850         /* Start discovery by sending a FLOGI. port_state is identically
 851          * LPFC_FLOGI while waiting for FLOGI cmpl
 852          */
 853         if (vport->port_state != LPFC_FLOGI) {
 854                 vport->port_state = LPFC_FLOGI;
 855                 lpfc_set_disctmo(vport);
 856                 lpfc_initial_flogi(vport);
 857         }
 858         return;
 859
 860 out:
 861         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 862                          "0306 CONFIG_LINK mbxStatus error x%x "
 863                          "HBA state x%x\n",
 864                          pmb->mb.mbxStatus, vport->port_state);
 865         mempool_free(pmb, phba->mbox_mem_pool);
 866
 867         lpfc_linkdown(phba);
 868
 869         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 870                          "0200 CONFIG_LINK bad hba state x%x\n",
 871                          vport->port_state);
 872
 873         lpfc_issue_clear_la(phba, vport);
 874         return;
 875 }
 876
 877 static void
 878 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 879 {
 880         MAILBOX_t *mb = &pmb->mb;
 881         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 882         struct lpfc_vport  *vport = pmb->vport;
 883
 884
 885         /* Check for error */
 886         if (mb->mbxStatus) {
 887                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 888                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 889                                  "0319 READ_SPARAM mbxStatus error x%x "
 890                                  "hba state x%x>\n",
 891                                  mb->mbxStatus, vport->port_state);
 892                 lpfc_linkdown(phba);
 893                 goto out;
 894         }
 895
 896         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 897                sizeof (struct serv_parm));
 898         if (phba->cfg_soft_wwnn)
 899                 u64_to_wwn(phba->cfg_soft_wwnn,
 900                            vport->fc_sparam.nodeName.u.wwn);
 901         if (phba->cfg_soft_wwpn)
 902                 u64_to_wwn(phba->cfg_soft_wwpn,
 903                            vport->fc_sparam.portName.u.wwn);
 904         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 905                sizeof(vport->fc_nodename));
 906         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 907                sizeof(vport->fc_portname));
 908         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 909                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 910                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 911         }
 912
 913         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 914         kfree(mp);
 915         mempool_free(pmb, phba->mbox_mem_pool);
 916         return;
 917
 918 out:
 919         pmb->context1 = NULL;
 920         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 921         kfree(mp);
 922         lpfc_issue_clear_la(phba, vport);
 923         mempool_free(pmb, phba->mbox_mem_pool);
 924         return;
 925 }
 926
 927 static void
 928 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 929 {
 930         struct lpfc_vport *vport = phba->pport;
 931         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 932         int i;
 933         struct lpfc_dmabuf *mp;
 934         int rc;
 935
 936         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 937         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 938
 939         spin_lock_irq(&phba->hbalock);
 940         switch (la->UlnkSpeed) {
 941         case LA_1GHZ_LINK:
 942                 phba->fc_linkspeed = LA_1GHZ_LINK;
 943                 break;
 944         case LA_2GHZ_LINK:
 945                 phba->fc_linkspeed = LA_2GHZ_LINK;
 946                 break;
 947         case LA_4GHZ_LINK:
 948                 phba->fc_linkspeed = LA_4GHZ_LINK;
 949                 break;
 950         case LA_8GHZ_LINK:
 951                 phba->fc_linkspeed = LA_8GHZ_LINK;
 952                 break;
 953         default:
 954                 phba->fc_linkspeed = LA_UNKNW_LINK;
 955                 break;
 956         }
 957
 958         phba->fc_topology = la->topology;
 959         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 960
 961         if (phba->fc_topology == TOPOLOGY_LOOP) {
 962                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 963
 964                                 /* Get Loop Map information */
 965                 if (la->il)
 966                         vport->fc_flag |= FC_LBIT;
 967
 968                 vport->fc_myDID = la->granted_AL_PA;
 969                 i = la->un.lilpBde64.tus.f.bdeSize;
 970
 971                 if (i == 0) {
 972                         phba->alpa_map[0] = 0;
 973                 } else {
 974                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 975                                 int numalpa, j, k;
 976                                 union {
 977                                         uint8_t pamap[16];
 978                                         struct {
 979                                                 uint32_t wd1;
 980                                                 uint32_t wd2;
 981                                                 uint32_t wd3;
 982                                                 uint32_t wd4;
 983                                         } pa;
 984                                 } un;
 985                                 numalpa = phba->alpa_map[0];
 986                                 j = 0;
 987                                 while (j < numalpa) {
 988                                         memset(un.pamap, 0, 16);
 989                                         for (k = 1; j < numalpa; k++) {
 990                                                 un.pamap[k - 1] =
 991                                                         phba->alpa_map[j + 1];
 992                                                 j++;
 993                                                 if (k == 16)
 994                                                         break;
 995                                         }
 996                                         /* Link Up Event ALPA map */
 997                                         lpfc_printf_log(phba,
 998                                                         KERN_WARNING,
 999                                                         LOG_LINK_EVENT,
1000                                                         "1304 Link Up Event "
1001                                                         "ALPA map Data: x%x "
1002                                                         "x%x x%x x%x\n",
1003                                                         un.pa.wd1, un.pa.wd2,
1004                                                         un.pa.wd3, un.pa.wd4);
1005                                 }
1006                         }
1007                 }
1008         } else {
1009                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1010                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1011                            (phba->sli_rev == 3))
1012                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1013                 }
1014                 vport->fc_myDID = phba->fc_pref_DID;
1015                 vport->fc_flag |= FC_LBIT;
1016         }
1017         spin_unlock_irq(&phba->hbalock);
1018
1019         lpfc_linkup(phba);
1020         if (sparam_mbox) {
1021                 lpfc_read_sparam(phba, sparam_mbox, 0);
1022                 sparam_mbox->vport = vport;
1023                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1024                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1025                 if (rc == MBX_NOT_FINISHED) {
1026                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1027                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1028                         kfree(mp);
1029                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1030                         if (cfglink_mbox)
1031                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1032                         goto out;
1033                 }
1034         }
1035
1036         if (cfglink_mbox) {
1037                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1038                 lpfc_config_link(phba, cfglink_mbox);
1039                 cfglink_mbox->vport = vport;
1040                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1041                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1042                 if (rc != MBX_NOT_FINISHED)
1043                         return;
1044                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1045         }
1046 out:
1047         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1048         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1049                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1050                          vport->port_state, sparam_mbox, cfglink_mbox);
1051         lpfc_issue_clear_la(phba, vport);
1052         return;
1053 }
1054
1055 static void
1056 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1057 {
1058         uint32_t control;
1059         struct lpfc_sli *psli = &phba->sli;
1060
1061         lpfc_linkdown(phba);
1062
1063         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1064         spin_lock_irq(&phba->hbalock);
1065         psli->sli_flag |= LPFC_PROCESS_LA;
1066         control = readl(phba->HCregaddr);
1067         control |= HC_LAINT_ENA;
1068         writel(control, phba->HCregaddr);
1069         readl(phba->HCregaddr); /* flush */
1070         spin_unlock_irq(&phba->hbalock);
1071 }
1072
1073 /*
1074  * This routine handles processing a READ_LA mailbox
1075  * command upon completion. It is setup in the LPFC_MBOXQ
1076  * as the completion routine when the command is
1077  * handed off to the SLI layer.
1078  */
1079 void
1080 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1081 {
1082         struct lpfc_vport *vport = pmb->vport;
1083         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1084         READ_LA_VAR *la;
1085         MAILBOX_t *mb = &pmb->mb;
1086         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1087
1088         /* Check for error */
1089         if (mb->mbxStatus) {
1090                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1091                                 "1307 READ_LA mbox error x%x state x%x\n",
1092                                 mb->mbxStatus, vport->port_state);
1093                 lpfc_mbx_issue_link_down(phba);
1094                 phba->link_state = LPFC_HBA_ERROR;
1095                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1096         }
1097
1098         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1099
1100         memcpy(&phba->alpa_map[0], mp->virt, 128);
1101
1102         spin_lock_irq(shost->host_lock);
1103         if (la->pb)
1104                 vport->fc_flag |= FC_BYPASSED_MODE;
1105         else
1106                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1107         spin_unlock_irq(shost->host_lock);
1108
1109         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1110             (phba->fc_eventTag == la->eventTag)) {
1111                 phba->fc_stat.LinkMultiEvent++;
1112                 if (la->attType == AT_LINK_UP)
1113                         if (phba->fc_eventTag != 0)
1114                                 lpfc_linkdown(phba);
1115         }
1116
1117         phba->fc_eventTag = la->eventTag;
1118
1119         if (la->attType == AT_LINK_UP) {
1120                 phba->fc_stat.LinkUp++;
1121                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1122                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1123                                         "1306 Link Up Event in loop back mode "
1124                                         "x%x received Data: x%x x%x x%x x%x\n",
1125                                         la->eventTag, phba->fc_eventTag,
1126                                         la->granted_AL_PA, la->UlnkSpeed,
1127                                         phba->alpa_map[0]);
1128                 } else {
1129                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1130                                         "1303 Link Up Event x%x received "
1131                                         "Data: x%x x%x x%x x%x\n",
1132                                         la->eventTag, phba->fc_eventTag,
1133                                         la->granted_AL_PA, la->UlnkSpeed,
1134                                         phba->alpa_map[0]);
1135                 }
1136                 lpfc_mbx_process_link_up(phba, la);
1137         } else {
1138                 phba->fc_stat.LinkDown++;
1139                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1140                                 "1305 Link Down Event x%x received "
1141                                 "Data: x%x x%x x%x\n",
1142                                 la->eventTag, phba->fc_eventTag,
1143                                 phba->pport->port_state, vport->fc_flag);
1144                 lpfc_mbx_issue_link_down(phba);
1145         }
1146
1147 lpfc_mbx_cmpl_read_la_free_mbuf:
1148         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1149         kfree(mp);
1150         mempool_free(pmb, phba->mbox_mem_pool);
1151         return;
1152 }
1153
1154 /*
1155  * This routine handles processing a REG_LOGIN mailbox
1156  * command upon completion. It is setup in the LPFC_MBOXQ
1157  * as the completion routine when the command is
1158  * handed off to the SLI layer.
1159  */
1160 void
1161 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1162 {
1163         struct lpfc_vport  *vport = pmb->vport;
1164         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1165         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1166
1167         pmb->context1 = NULL;
1168
1169         /* Good status, call state machine */
1170         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1171         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1172         kfree(mp);
1173         mempool_free(pmb, phba->mbox_mem_pool);
1174         lpfc_nlp_put(ndlp);
1175
1176         return;
1177 }
1178
1179 static void
1180 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1181 {
1182         MAILBOX_t *mb = &pmb->mb;
1183         struct lpfc_vport *vport = pmb->vport;
1184         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1185
1186         switch (mb->mbxStatus) {
1187         case 0x0011:
1188         case 0x0020:
1189         case 0x9700:
1190                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1191                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1192                                  mb->mbxStatus);
1193                 break;
1194         }
1195         vport->unreg_vpi_cmpl = VPORT_OK;
1196         mempool_free(pmb, phba->mbox_mem_pool);
1197         /*
1198          * This shost reference might have been taken at the beginning of
1199          * lpfc_vport_delete()
1200          */
1201         if (vport->load_flag & FC_UNLOADING)
1202                 scsi_host_put(shost);
1203 }
1204
1205 void
1206 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1207 {
1208         struct lpfc_hba  *phba = vport->phba;
1209         LPFC_MBOXQ_t *mbox;
1210         int rc;
1211
1212         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1213         if (!mbox)
1214                 return;
1215
1216         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1217         mbox->vport = vport;
1218         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1219         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1220         if (rc == MBX_NOT_FINISHED) {
1221                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1222                                  "1800 Could not issue unreg_vpi\n");
1223                 mempool_free(mbox, phba->mbox_mem_pool);
1224                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1225         }
1226 }
1227
1228 static void
1229 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1230 {
1231         struct lpfc_vport *vport = pmb->vport;
1232         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1233         MAILBOX_t *mb = &pmb->mb;
1234
1235         switch (mb->mbxStatus) {
1236         case 0x0011:
1237         case 0x9601:
1238         case 0x9602:
1239                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1240                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1241                                  mb->mbxStatus);
1242                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1243                 spin_lock_irq(shost->host_lock);
1244                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1245                 spin_unlock_irq(shost->host_lock);
1246                 vport->fc_myDID = 0;
1247                 goto out;
1248         }
1249
1250         vport->num_disc_nodes = 0;
1251         /* go thru NPR list and issue ELS PLOGIs */
1252         if (vport->fc_npr_cnt)
1253                 lpfc_els_disc_plogi(vport);
1254
1255         if (!vport->num_disc_nodes) {
1256                 spin_lock_irq(shost->host_lock);
1257                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1258                 spin_unlock_irq(shost->host_lock);
1259                 lpfc_can_disctmo(vport);
1260         }
1261         vport->port_state = LPFC_VPORT_READY;
1262
1263 out:
1264         mempool_free(pmb, phba->mbox_mem_pool);
1265         return;
1266 }
1267
1268 /*
1269  * This routine handles processing a Fabric REG_LOGIN mailbox
1270  * command upon completion. It is setup in the LPFC_MBOXQ
1271  * as the completion routine when the command is
1272  * handed off to the SLI layer.
1273  */
1274 void
1275 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1276 {
1277         struct lpfc_vport *vport = pmb->vport;
1278         MAILBOX_t *mb = &pmb->mb;
1279         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1280         struct lpfc_nodelist *ndlp;
1281         struct lpfc_vport **vports;
1282         int i;
1283
1284         ndlp = (struct lpfc_nodelist *) pmb->context2;
1285         pmb->context1 = NULL;
1286         pmb->context2 = NULL;
1287         if (mb->mbxStatus) {
1288                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1289                 kfree(mp);
1290                 mempool_free(pmb, phba->mbox_mem_pool);
1291                 lpfc_nlp_put(ndlp);
1292
1293                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1294                         /* FLOGI failed, use loop map to make discovery list */
1295                         lpfc_disc_list_loopmap(vport);
1296
1297                         /* Start discovery */
1298                         lpfc_disc_start(vport);
1299                         return;
1300                 }
1301
1302                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1303                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1304                                  "0258 Register Fabric login error: 0x%x\n",
1305                                  mb->mbxStatus);
1306                 return;
1307         }
1308
1309         ndlp->nlp_rpi = mb->un.varWords[0];
1310         ndlp->nlp_type |= NLP_FABRIC;
1311         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1312
1313         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1314
1315         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1316                 vports = lpfc_create_vport_work_array(phba);
1317                 if (vports != NULL)
1318                         for(i = 0;
1319                             i < LPFC_MAX_VPORTS && vports[i] != NULL;
1320                             i++) {
1321                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1322                                         continue;
1323                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1324                                         lpfc_initial_fdisc(vports[i]);
1325                                 else if (phba->sli3_options &
1326                                                 LPFC_SLI3_NPIV_ENABLED) {
1327                                         lpfc_vport_set_state(vports[i],
1328                                                 FC_VPORT_NO_FABRIC_SUPP);
1329                                         lpfc_printf_vlog(vport, KERN_ERR,
1330                                                          LOG_ELS,
1331                                                         "0259 No NPIV "
1332                                                         "Fabric support\n");
1333                                 }
1334                         }
1335                 lpfc_destroy_vport_work_array(vports);
1336                 lpfc_do_scr_ns_plogi(phba, vport);
1337         }
1338
1339         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1340         kfree(mp);
1341         mempool_free(pmb, phba->mbox_mem_pool);
1342         return;
1343 }
1344
1345 /*
1346  * This routine handles processing a NameServer REG_LOGIN mailbox
1347  * command upon completion. It is setup in the LPFC_MBOXQ
1348  * as the completion routine when the command is
1349  * handed off to the SLI layer.
1350  */
1351 void
1352 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1353 {
1354         MAILBOX_t *mb = &pmb->mb;
1355         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1356         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1357         struct lpfc_vport *vport = pmb->vport;
1358
1359         if (mb->mbxStatus) {
1360 out:
1361                 lpfc_nlp_put(ndlp);
1362                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1363                 kfree(mp);
1364                 mempool_free(pmb, phba->mbox_mem_pool);
1365                 lpfc_drop_node(vport, ndlp);
1366
1367                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1368                         /*
1369                          * RegLogin failed, use loop map to make discovery
1370                          * list
1371                          */
1372                         lpfc_disc_list_loopmap(vport);
1373
1374                         /* Start discovery */
1375                         lpfc_disc_start(vport);
1376                         return;
1377                 }
1378                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1379                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1380                                  "0260 Register NameServer error: 0x%x\n",
1381                                  mb->mbxStatus);
1382                 return;
1383         }
1384
1385         pmb->context1 = NULL;
1386
1387         ndlp->nlp_rpi = mb->un.varWords[0];
1388         ndlp->nlp_type |= NLP_FABRIC;
1389         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1390
1391         if (vport->port_state < LPFC_VPORT_READY) {
1392                 /* Link up discovery requires Fabric registration. */
1393                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1394                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1395                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1396                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1397                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1398
1399                 /* Issue SCR just before NameServer GID_FT Query */
1400                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1401         }
1402
1403         vport->fc_ns_retry = 0;
1404         /* Good status, issue CT Request to NameServer */
1405         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1406                 /* Cannot issue NameServer Query, so finish up discovery */
1407                 goto out;
1408         }
1409
1410         lpfc_nlp_put(ndlp);
1411         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1412         kfree(mp);
1413         mempool_free(pmb, phba->mbox_mem_pool);
1414
1415         return;
1416 }
1417
1418 static void
1419 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1420 {
1421         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1422         struct fc_rport  *rport;
1423         struct lpfc_rport_data *rdata;
1424         struct fc_rport_identifiers rport_ids;
1425         struct lpfc_hba  *phba = vport->phba;
1426
1427         /* Remote port has reappeared. Re-register w/ FC transport */
1428         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1429         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1430         rport_ids.port_id = ndlp->nlp_DID;
1431         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1432
1433         /*
1434          * We leave our node pointer in rport->dd_data when we unregister a
1435          * FCP target port.  But fc_remote_port_add zeros the space to which
1436          * rport->dd_data points.  So, if we're reusing a previously
1437          * registered port, drop the reference that we took the last time we
1438          * registered the port.
1439          */
1440         if (ndlp->rport && ndlp->rport->dd_data &&
1441             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1442                 lpfc_nlp_put(ndlp);
1443         }
1444
1445         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1446                 "rport add:       did:x%x flg:x%x type x%x",
1447                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1448
1449         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1450         if (!rport || !get_device(&rport->dev)) {
1451                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1452                            "Warning: fc_remote_port_add failed\n");
1453                 return;
1454         }
1455
1456         /* initialize static port data */
1457         rport->maxframe_size = ndlp->nlp_maxframe;
1458         rport->supported_classes = ndlp->nlp_class_sup;
1459         rdata = rport->dd_data;
1460         rdata->pnode = lpfc_nlp_get(ndlp);
1461
1462         if (ndlp->nlp_type & NLP_FCP_TARGET)
1463                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1464         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1465                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1466
1467
1468         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1469                 fc_remote_port_rolechg(rport, rport_ids.roles);
1470
1471         if ((rport->scsi_target_id != -1) &&
1472             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1473                 ndlp->nlp_sid = rport->scsi_target_id;
1474         }
1475         return;
1476 }
1477
1478 static void
1479 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1480 {
1481         struct fc_rport *rport = ndlp->rport;
1482
1483         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1484                 "rport delete:    did:x%x flg:x%x type x%x",
1485                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1486
1487         fc_remote_port_delete(rport);
1488
1489         return;
1490 }
1491
1492 static void
1493 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1494 {
1495         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1496
1497         spin_lock_irq(shost->host_lock);
1498         switch (state) {
1499         case NLP_STE_UNUSED_NODE:
1500                 vport->fc_unused_cnt += count;
1501                 break;
1502         case NLP_STE_PLOGI_ISSUE:
1503                 vport->fc_plogi_cnt += count;
1504                 break;
1505         case NLP_STE_ADISC_ISSUE:
1506                 vport->fc_adisc_cnt += count;
1507                 break;
1508         case NLP_STE_REG_LOGIN_ISSUE:
1509                 vport->fc_reglogin_cnt += count;
1510                 break;
1511         case NLP_STE_PRLI_ISSUE:
1512                 vport->fc_prli_cnt += count;
1513                 break;
1514         case NLP_STE_UNMAPPED_NODE:
1515                 vport->fc_unmap_cnt += count;
1516                 break;
1517         case NLP_STE_MAPPED_NODE:
1518                 vport->fc_map_cnt += count;
1519                 break;
1520         case NLP_STE_NPR_NODE:
1521                 vport->fc_npr_cnt += count;
1522                 break;
1523         }
1524         spin_unlock_irq(shost->host_lock);
1525 }
1526
1527 static void
1528 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1529                        int old_state, int new_state)
1530 {
1531         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532
1533         if (new_state == NLP_STE_UNMAPPED_NODE) {
1534                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1535                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1536                 ndlp->nlp_type |= NLP_FC_NODE;
1537         }
1538         if (new_state == NLP_STE_MAPPED_NODE)
1539                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1540         if (new_state == NLP_STE_NPR_NODE)
1541                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1542
1543         /* Transport interface */
1544         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1545                             old_state == NLP_STE_UNMAPPED_NODE)) {
1546                 vport->phba->nport_event_cnt++;
1547                 lpfc_unregister_remote_port(ndlp);
1548         }
1549
1550         if (new_state ==  NLP_STE_MAPPED_NODE ||
1551             new_state == NLP_STE_UNMAPPED_NODE) {
1552                 vport->phba->nport_event_cnt++;
1553                 /*
1554                  * Tell the fc transport about the port, if we haven't
1555                  * already. If we have, and it's a scsi entity, be
1556                  * sure to unblock any attached scsi devices
1557                  */
1558                 lpfc_register_remote_port(vport, ndlp);
1559         }
1560         /*
1561          * if we added to Mapped list, but the remote port
1562          * registration failed or assigned a target id outside
1563          * our presentable range - move the node to the
1564          * Unmapped List
1565          */
1566         if (new_state == NLP_STE_MAPPED_NODE &&
1567             (!ndlp->rport ||
1568              ndlp->rport->scsi_target_id == -1 ||
1569              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1570                 spin_lock_irq(shost->host_lock);
1571                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1572                 spin_unlock_irq(shost->host_lock);
1573                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1574         }
1575 }
1576
1577 static char *
1578 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1579 {
1580         static char *states[] = {
1581                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1582                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1583                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1584                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1585                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1586                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1587                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1588                 [NLP_STE_NPR_NODE] = "NPR",
1589         };
1590
1591         if (state < NLP_STE_MAX_STATE && states[state])
1592                 strlcpy(buffer, states[state], size);
1593         else
1594                 snprintf(buffer, size, "unknown (%d)", state);
1595         return buffer;
1596 }
1597
1598 void
1599 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1600                    int state)
1601 {
1602         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1603         int  old_state = ndlp->nlp_state;
1604         char name1[16], name2[16];
1605
1606         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1607                          "0904 NPort state transition x%06x, %s -> %s\n",
1608                          ndlp->nlp_DID,
1609                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1610                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1611
1612         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1613                 "node statechg    did:x%x old:%d ste:%d",
1614                 ndlp->nlp_DID, old_state, state);
1615
1616         if (old_state == NLP_STE_NPR_NODE &&
1617             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1618             state != NLP_STE_NPR_NODE)
1619                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1620         if (old_state == NLP_STE_UNMAPPED_NODE) {
1621                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1622                 ndlp->nlp_type &= ~NLP_FC_NODE;
1623         }
1624
1625         if (list_empty(&ndlp->nlp_listp)) {
1626                 spin_lock_irq(shost->host_lock);
1627                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1628                 spin_unlock_irq(shost->host_lock);
1629         } else if (old_state)
1630                 lpfc_nlp_counters(vport, old_state, -1);
1631
1632         ndlp->nlp_state = state;
1633         lpfc_nlp_counters(vport, state, 1);
1634         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1635 }
1636
1637 void
1638 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1639 {
1640         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1641
1642         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1643                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1644         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1645                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1646         spin_lock_irq(shost->host_lock);
1647         list_del_init(&ndlp->nlp_listp);
1648         spin_unlock_irq(shost->host_lock);
1649         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1650                                NLP_STE_UNUSED_NODE);
1651 }
1652
1653 void
1654 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1655 {
1656         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1657         lpfc_nlp_put(ndlp);
1658 }
1659
1660 /*
1661  * Start / ReStart rescue timer for Discovery / RSCN handling
1662  */
1663 void
1664 lpfc_set_disctmo(struct lpfc_vport *vport)
1665 {
1666         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1667         struct lpfc_hba  *phba = vport->phba;
1668         uint32_t tmo;
1669
1670         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1671                 /* For FAN, timeout should be greater then edtov */
1672                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1673         } else {
1674                 /* Normal discovery timeout should be > then ELS/CT timeout
1675                  * FC spec states we need 3 * ratov for CT requests
1676                  */
1677                 tmo = ((phba->fc_ratov * 3) + 3);
1678         }
1679
1680
1681         if (!timer_pending(&vport->fc_disctmo)) {
1682                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1683                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1684                         tmo, vport->port_state, vport->fc_flag);
1685         }
1686
1687         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1688         spin_lock_irq(shost->host_lock);
1689         vport->fc_flag |= FC_DISC_TMO;
1690         spin_unlock_irq(shost->host_lock);
1691
1692         /* Start Discovery Timer state <hba_state> */
1693         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1694                          "0247 Start Discovery Timer state x%x "
1695                          "Data: x%x x%lx x%x x%x\n",
1696                          vport->port_state, tmo,
1697                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1698                          vport->fc_adisc_cnt);
1699
1700         return;
1701 }
1702
1703 /*
1704  * Cancel rescue timer for Discovery / RSCN handling
1705  */
1706 int
1707 lpfc_can_disctmo(struct lpfc_vport *vport)
1708 {
1709         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1710         unsigned long iflags;
1711
1712         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1713                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1714                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1715
1716         /* Turn off discovery timer if its running */
1717         if (vport->fc_flag & FC_DISC_TMO) {
1718                 spin_lock_irqsave(shost->host_lock, iflags);
1719                 vport->fc_flag &= ~FC_DISC_TMO;
1720                 spin_unlock_irqrestore(shost->host_lock, iflags);
1721                 del_timer_sync(&vport->fc_disctmo);
1722                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1723                 vport->work_port_events &= ~WORKER_DISC_TMO;
1724                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1725         }
1726
1727         /* Cancel Discovery Timer state <hba_state> */
1728         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1729                          "0248 Cancel Discovery Timer state x%x "
1730                          "Data: x%x x%x x%x\n",
1731                          vport->port_state, vport->fc_flag,
1732                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1733         return 0;
1734 }
1735
1736 /*
1737  * Check specified ring for outstanding IOCB on the SLI queue
1738  * Return true if iocb matches the specified nport
1739  */
1740 int
1741 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1742                     struct lpfc_sli_ring *pring,
1743                     struct lpfc_iocbq *iocb,
1744                     struct lpfc_nodelist *ndlp)
1745 {
1746         struct lpfc_sli *psli = &phba->sli;
1747         IOCB_t *icmd = &iocb->iocb;
1748         struct lpfc_vport    *vport = ndlp->vport;
1749
1750         if (iocb->vport != vport)
1751                 return 0;
1752
1753         if (pring->ringno == LPFC_ELS_RING) {
1754                 switch (icmd->ulpCommand) {
1755                 case CMD_GEN_REQUEST64_CR:
1756                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1757                                 return 1;
1758                 case CMD_ELS_REQUEST64_CR:
1759                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1760                                 return 1;
1761                 case CMD_XMIT_ELS_RSP64_CX:
1762                         if (iocb->context1 == (uint8_t *) ndlp)
1763                                 return 1;
1764                 }
1765         } else if (pring->ringno == psli->extra_ring) {
1766
1767         } else if (pring->ringno == psli->fcp_ring) {
1768                 /* Skip match check if waiting to relogin to FCP target */
1769                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1770                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1771                         return 0;
1772                 }
1773                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1774                         return 1;
1775                 }
1776         } else if (pring->ringno == psli->next_ring) {
1777
1778         }
1779         return 0;
1780 }
1781
1782 /*
1783  * Free resources / clean up outstanding I/Os
1784  * associated with nlp_rpi in the LPFC_NODELIST entry.
1785  */
1786 static int
1787 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1788 {
1789         LIST_HEAD(completions);
1790         struct lpfc_sli *psli;
1791         struct lpfc_sli_ring *pring;
1792         struct lpfc_iocbq *iocb, *next_iocb;
1793         IOCB_t *icmd;
1794         uint32_t rpi, i;
1795
1796         lpfc_fabric_abort_nport(ndlp);
1797
1798         /*
1799          * Everything that matches on txcmplq will be returned
1800          * by firmware with a no rpi error.
1801          */
1802         psli = &phba->sli;
1803         rpi = ndlp->nlp_rpi;
1804         if (rpi) {
1805                 /* Now process each ring */
1806                 for (i = 0; i < psli->num_rings; i++) {
1807                         pring = &psli->ring[i];
1808
1809                         spin_lock_irq(&phba->hbalock);
1810                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1811                                                  list) {
1812                                 /*
1813                                  * Check to see if iocb matches the nport we are
1814                                  * looking for
1815                                  */
1816                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1817                                                          ndlp))) {
1818                                         /* It matches, so deque and call compl
1819                                            with an error */
1820                                         list_move_tail(&iocb->list,
1821                                                        &completions);
1822                                         pring->txq_cnt--;
1823                                 }
1824                         }
1825                         spin_unlock_irq(&phba->hbalock);
1826                 }
1827         }
1828
1829         while (!list_empty(&completions)) {
1830                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1831                 list_del_init(&iocb->list);
1832
1833                 if (!iocb->iocb_cmpl)
1834                         lpfc_sli_release_iocbq(phba, iocb);
1835                 else {
1836                         icmd = &iocb->iocb;
1837                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1838                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1839                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1840                 }
1841         }
1842
1843         return 0;
1844 }
1845
1846 /*
1847  * Free rpi associated with LPFC_NODELIST entry.
1848  * This routine is called from lpfc_freenode(), when we are removing
1849  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1850  * LOGO that completes successfully, and we are waiting to PLOGI back
1851  * to the remote NPort. In addition, it is called after we receive
1852  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1853  * we are waiting to PLOGI back to the remote NPort.
1854  */
1855 int
1856 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1857 {
1858         struct lpfc_hba *phba = vport->phba;
1859         LPFC_MBOXQ_t    *mbox;
1860         int rc;
1861
1862         if (ndlp->nlp_rpi) {
1863                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1864                 if (mbox) {
1865                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1866                         mbox->vport = vport;
1867                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1868                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1869                         if (rc == MBX_NOT_FINISHED)
1870                                 mempool_free(mbox, phba->mbox_mem_pool);
1871                 }
1872                 lpfc_no_rpi(phba, ndlp);
1873                 ndlp->nlp_rpi = 0;
1874                 return 1;
1875         }
1876         return 0;
1877 }
1878
1879 void
1880 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1881 {
1882         struct lpfc_hba  *phba  = vport->phba;
1883         LPFC_MBOXQ_t     *mbox;
1884         int rc;
1885
1886         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1887         if (mbox) {
1888                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1889                 mbox->vport = vport;
1890                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1891                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1892                 if (rc == MBX_NOT_FINISHED) {
1893                         mempool_free(mbox, phba->mbox_mem_pool);
1894                 }
1895         }
1896 }
1897
1898 void
1899 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1900 {
1901         struct lpfc_hba  *phba  = vport->phba;
1902         LPFC_MBOXQ_t     *mbox;
1903         int rc;
1904
1905         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1906         if (mbox) {
1907                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1908                 mbox->vport = vport;
1909                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1910                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1911                 if (rc == MBX_NOT_FINISHED) {
1912                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1913                                          "1815 Could not issue "
1914                                          "unreg_did (default rpis)\n");
1915                         mempool_free(mbox, phba->mbox_mem_pool);
1916                 }
1917         }
1918 }
1919
1920 /*
1921  * Free resources associated with LPFC_NODELIST entry
1922  * so it can be freed.
1923  */
1924 static int
1925 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1926 {
1927         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1928         struct lpfc_hba  *phba = vport->phba;
1929         LPFC_MBOXQ_t *mb, *nextmb;
1930         struct lpfc_dmabuf *mp;
1931
1932         /* Cleanup node for NPort <nlp_DID> */
1933         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1934                          "0900 Cleanup node for NPort x%x "
1935                          "Data: x%x x%x x%x\n",
1936                          ndlp->nlp_DID, ndlp->nlp_flag,
1937                          ndlp->nlp_state, ndlp->nlp_rpi);
1938         lpfc_dequeue_node(vport, ndlp);
1939
1940         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1941         if ((mb = phba->sli.mbox_active)) {
1942                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1943                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1944                         mb->context2 = NULL;
1945                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1946                 }
1947         }
1948
1949         spin_lock_irq(&phba->hbalock);
1950         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1951                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1952                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1953                         mp = (struct lpfc_dmabuf *) (mb->context1);
1954                         if (mp) {
1955                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1956                                 kfree(mp);
1957                         }
1958                         list_del(&mb->list);
1959                         mempool_free(mb, phba->mbox_mem_pool);
1960                         lpfc_nlp_put(ndlp);
1961                 }
1962         }
1963         spin_unlock_irq(&phba->hbalock);
1964
1965         lpfc_els_abort(phba,ndlp);
1966         spin_lock_irq(shost->host_lock);
1967         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1968         spin_unlock_irq(shost->host_lock);
1969
1970         ndlp->nlp_last_elscmd = 0;
1971         del_timer_sync(&ndlp->nlp_delayfunc);
1972
1973         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1974                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1975         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1976                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1977
1978         if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) {
1979                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1980                 complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2));
1981         }
1982
1983         lpfc_unreg_rpi(vport, ndlp);
1984
1985         return 0;
1986 }
1987
1988 /*
1989  * Check to see if we can free the nlp back to the freelist.
1990  * If we are in the middle of using the nlp in the discovery state
1991  * machine, defer the free till we reach the end of the state machine.
1992  */
1993 static void
1994 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1995 {
1996         struct lpfc_rport_data *rdata;
1997
1998         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1999                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2000         }
2001
2002         lpfc_cleanup_node(vport, ndlp);
2003
2004         /*
2005          * We can get here with a non-NULL ndlp->rport because when we
2006          * unregister a rport we don't break the rport/node linkage.  So if we
2007          * do, make sure we don't leaving any dangling pointers behind.
2008          */
2009         if (ndlp->rport) {
2010                 rdata = ndlp->rport->dd_data;
2011                 rdata->pnode = NULL;
2012                 ndlp->rport = NULL;
2013         }
2014 }
2015
2016 static int
2017 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2018               uint32_t did)
2019 {
2020         D_ID mydid, ndlpdid, matchdid;
2021
2022         if (did == Bcast_DID)
2023                 return 0;
2024
2025         if (ndlp->nlp_DID == 0) {
2026                 return 0;
2027         }
2028
2029         /* First check for Direct match */
2030         if (ndlp->nlp_DID == did)
2031                 return 1;
2032
2033         /* Next check for area/domain identically equals 0 match */
2034         mydid.un.word = vport->fc_myDID;
2035         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2036                 return 0;
2037         }
2038
2039         matchdid.un.word = did;
2040         ndlpdid.un.word = ndlp->nlp_DID;
2041         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2042                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2043                     (mydid.un.b.area == matchdid.un.b.area)) {
2044                         if ((ndlpdid.un.b.domain == 0) &&
2045                             (ndlpdid.un.b.area == 0)) {
2046                                 if (ndlpdid.un.b.id)
2047                                         return 1;
2048                         }
2049                         return 0;
2050                 }
2051
2052                 matchdid.un.word = ndlp->nlp_DID;
2053                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2054                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2055                         if ((matchdid.un.b.domain == 0) &&
2056                             (matchdid.un.b.area == 0)) {
2057                                 if (matchdid.un.b.id)
2058                                         return 1;
2059                         }
2060                 }
2061         }
2062         return 0;
2063 }
2064
2065 /* Search for a nodelist entry */
2066 static struct lpfc_nodelist *
2067 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2068 {
2069         struct lpfc_nodelist *ndlp;
2070         uint32_t data1;
2071
2072         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2073                 if (lpfc_matchdid(vport, ndlp, did)) {
2074                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2075                                  ((uint32_t) ndlp->nlp_xri << 16) |
2076                                  ((uint32_t) ndlp->nlp_type << 8) |
2077                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2078                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2079                                          "0929 FIND node DID "
2080                                          "Data: x%p x%x x%x x%x\n",
2081                                          ndlp, ndlp->nlp_DID,
2082                                          ndlp->nlp_flag, data1);
2083                         return ndlp;
2084                 }
2085         }
2086
2087         /* FIND node did <did> NOT FOUND */
2088         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2089                          "0932 FIND node did x%x NOT FOUND.\n", did);
2090         return NULL;
2091 }
2092
2093 struct lpfc_nodelist *
2094 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2095 {
2096         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2097         struct lpfc_nodelist *ndlp;
2098
2099         spin_lock_irq(shost->host_lock);
2100         ndlp = __lpfc_findnode_did(vport, did);
2101         spin_unlock_irq(shost->host_lock);
2102         return ndlp;
2103 }
2104
2105 struct lpfc_nodelist *
2106 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2107 {
2108         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2109         struct lpfc_nodelist *ndlp;
2110
2111         ndlp = lpfc_findnode_did(vport, did);
2112         if (!ndlp) {
2113                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2114                     lpfc_rscn_payload_check(vport, did) == 0)
2115                         return NULL;
2116                 ndlp = (struct lpfc_nodelist *)
2117                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2118                 if (!ndlp)
2119                         return NULL;
2120                 lpfc_nlp_init(vport, ndlp, did);
2121                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2122                 spin_lock_irq(shost->host_lock);
2123                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2124                 spin_unlock_irq(shost->host_lock);
2125                 return ndlp;
2126         }
2127         if (vport->fc_flag & FC_RSCN_MODE) {
2128                 if (lpfc_rscn_payload_check(vport, did)) {
2129                         spin_lock_irq(shost->host_lock);
2130                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2131                         spin_unlock_irq(shost->host_lock);
2132
2133                         /* Since this node is marked for discovery,
2134                          * delay timeout is not needed.
2135                          */
2136                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2137                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2138                 } else
2139                         ndlp = NULL;
2140         } else {
2141                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2142                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
2143                         return NULL;
2144                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2145                 spin_lock_irq(shost->host_lock);
2146                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2147                 spin_unlock_irq(shost->host_lock);
2148         }
2149         return ndlp;
2150 }
2151
2152 /* Build a list of nodes to discover based on the loopmap */
2153 void
2154 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2155 {
2156         struct lpfc_hba  *phba = vport->phba;
2157         int j;
2158         uint32_t alpa, index;
2159
2160         if (!lpfc_is_link_up(phba))
2161                 return;
2162
2163         if (phba->fc_topology != TOPOLOGY_LOOP)
2164                 return;
2165
2166         /* Check for loop map present or not */
2167         if (phba->alpa_map[0]) {
2168                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2169                         alpa = phba->alpa_map[j];
2170                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2171                                 continue;
2172                         lpfc_setup_disc_node(vport, alpa);
2173                 }
2174         } else {
2175                 /* No alpamap, so try all alpa's */
2176                 for (j = 0; j < FC_MAXLOOP; j++) {
2177                         /* If cfg_scan_down is set, start from highest
2178                          * ALPA (0xef) to lowest (0x1).
2179                          */
2180                         if (vport->cfg_scan_down)
2181                                 index = j;
2182                         else
2183                                 index = FC_MAXLOOP - j - 1;
2184                         alpa = lpfcAlpaArray[index];
2185                         if ((vport->fc_myDID & 0xff) == alpa)
2186                                 continue;
2187                         lpfc_setup_disc_node(vport, alpa);
2188                 }
2189         }
2190         return;
2191 }
2192
2193 void
2194 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2195 {
2196         LPFC_MBOXQ_t *mbox;
2197         struct lpfc_sli *psli = &phba->sli;
2198         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2199         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2200         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2201         int  rc;
2202
2203         /*
2204          * if it's not a physical port or if we already send
2205          * clear_la then don't send it.
2206          */
2207         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2208             (vport->port_type != LPFC_PHYSICAL_PORT))
2209                 return;
2210
2211                         /* Link up discovery */
2212         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2213                 phba->link_state = LPFC_CLEAR_LA;
2214                 lpfc_clear_la(phba, mbox);
2215                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2216                 mbox->vport = vport;
2217                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2218                 if (rc == MBX_NOT_FINISHED) {
2219                         mempool_free(mbox, phba->mbox_mem_pool);
2220                         lpfc_disc_flush_list(vport);
2221                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2222                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2223                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2224                         phba->link_state = LPFC_HBA_ERROR;
2225                 }
2226         }
2227 }
2228
2229 /* Reg_vpi to tell firmware to resume normal operations */
2230 void
2231 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2232 {
2233         LPFC_MBOXQ_t *regvpimbox;
2234
2235         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2236         if (regvpimbox) {
2237                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2238                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2239                 regvpimbox->vport = vport;
2240                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2241                                         == MBX_NOT_FINISHED) {
2242                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2243                 }
2244         }
2245 }
2246
2247 /* Start Link up / RSCN discovery on NPR nodes */
2248 void
2249 lpfc_disc_start(struct lpfc_vport *vport)
2250 {
2251         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2252         struct lpfc_hba  *phba = vport->phba;
2253         uint32_t num_sent;
2254         uint32_t clear_la_pending;
2255         int did_changed;
2256
2257         if (!lpfc_is_link_up(phba))
2258                 return;
2259
2260         if (phba->link_state == LPFC_CLEAR_LA)
2261                 clear_la_pending = 1;
2262         else
2263                 clear_la_pending = 0;
2264
2265         if (vport->port_state < LPFC_VPORT_READY)
2266                 vport->port_state = LPFC_DISC_AUTH;
2267
2268         lpfc_set_disctmo(vport);
2269
2270         if (vport->fc_prevDID == vport->fc_myDID)
2271                 did_changed = 0;
2272         else
2273                 did_changed = 1;
2274
2275         vport->fc_prevDID = vport->fc_myDID;
2276         vport->num_disc_nodes = 0;
2277
2278         /* Start Discovery state <hba_state> */
2279         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2280                          "0202 Start Discovery hba state x%x "
2281                          "Data: x%x x%x x%x\n",
2282                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2283                          vport->fc_adisc_cnt);
2284
2285         /* First do ADISCs - if any */
2286         num_sent = lpfc_els_disc_adisc(vport);
2287
2288         if (num_sent)
2289                 return;
2290
2291         /*
2292          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2293          * continue discovery.
2294          */
2295         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2296             !(vport->fc_flag & FC_RSCN_MODE)) {
2297                 lpfc_issue_reg_vpi(phba, vport);
2298                 return;
2299         }
2300
2301         /*
2302          * For SLI2, we need to set port_state to READY and continue
2303          * discovery.
2304          */
2305         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2306                 /* If we get here, there is nothing to ADISC */
2307                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2308                         lpfc_issue_clear_la(phba, vport);
2309
2310                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2311                         vport->num_disc_nodes = 0;
2312                         /* go thru NPR nodes and issue ELS PLOGIs */
2313                         if (vport->fc_npr_cnt)
2314                                 lpfc_els_disc_plogi(vport);
2315
2316                         if (!vport->num_disc_nodes) {
2317                                 spin_lock_irq(shost->host_lock);
2318                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2319                                 spin_unlock_irq(shost->host_lock);
2320                                 lpfc_can_disctmo(vport);
2321                         }
2322                 }
2323                 vport->port_state = LPFC_VPORT_READY;
2324         } else {
2325                 /* Next do PLOGIs - if any */
2326                 num_sent = lpfc_els_disc_plogi(vport);
2327
2328                 if (num_sent)
2329                         return;
2330
2331                 if (vport->fc_flag & FC_RSCN_MODE) {
2332                         /* Check to see if more RSCNs came in while we
2333                          * were processing this one.
2334                          */
2335                         if ((vport->fc_rscn_id_cnt == 0) &&
2336                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2337                                 spin_lock_irq(shost->host_lock);
2338                                 vport->fc_flag &= ~FC_RSCN_MODE;
2339                                 spin_unlock_irq(shost->host_lock);
2340                                 lpfc_can_disctmo(vport);
2341                         } else
2342                                 lpfc_els_handle_rscn(vport);
2343                 }
2344         }
2345         return;
2346 }
2347
2348 /*
2349  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2350  *  ring the match the sppecified nodelist.
2351  */
2352 static void
2353 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2354 {
2355         LIST_HEAD(completions);
2356         struct lpfc_sli *psli;
2357         IOCB_t     *icmd;
2358         struct lpfc_iocbq    *iocb, *next_iocb;
2359         struct lpfc_sli_ring *pring;
2360
2361         psli = &phba->sli;
2362         pring = &psli->ring[LPFC_ELS_RING];
2363
2364         /* Error matching iocb on txq or txcmplq
2365          * First check the txq.
2366          */
2367         spin_lock_irq(&phba->hbalock);
2368         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2369                 if (iocb->context1 != ndlp) {
2370                         continue;
2371                 }
2372                 icmd = &iocb->iocb;
2373                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2374                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2375
2376                         list_move_tail(&iocb->list, &completions);
2377                         pring->txq_cnt--;
2378                 }
2379         }
2380
2381         /* Next check the txcmplq */
2382         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2383                 if (iocb->context1 != ndlp) {
2384                         continue;
2385                 }
2386                 icmd = &iocb->iocb;
2387                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2388                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2389                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2390                 }
2391         }
2392         spin_unlock_irq(&phba->hbalock);
2393
2394         while (!list_empty(&completions)) {
2395                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2396                 list_del_init(&iocb->list);
2397
2398                 if (!iocb->iocb_cmpl)
2399                         lpfc_sli_release_iocbq(phba, iocb);
2400                 else {
2401                         icmd = &iocb->iocb;
2402                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2403                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2404                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2405                 }
2406         }
2407 }
2408
2409 void
2410 lpfc_disc_flush_list(struct lpfc_vport *vport)
2411 {
2412         struct lpfc_nodelist *ndlp, *next_ndlp;
2413         struct lpfc_hba *phba = vport->phba;
2414
2415         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2416                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2417                                          nlp_listp) {
2418                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2419                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2420                                 lpfc_free_tx(phba, ndlp);
2421                                 lpfc_nlp_put(ndlp);
2422                         }
2423                 }
2424         }
2425 }
2426
2427 void
2428 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2429 {
2430         lpfc_els_flush_rscn(vport);
2431         lpfc_els_flush_cmd(vport);
2432         lpfc_disc_flush_list(vport);
2433 }
2434
2435 /*****************************************************************************/
2436 /*
2437  * NAME:     lpfc_disc_timeout
2438  *
2439  * FUNCTION: Fibre Channel driver discovery timeout routine.
2440  *
2441  * EXECUTION ENVIRONMENT: interrupt only
2442  *
2443  * CALLED FROM:
2444  *      Timer function
2445  *
2446  * RETURNS:
2447  *      none
2448  */
2449 /*****************************************************************************/
2450 void
2451 lpfc_disc_timeout(unsigned long ptr)
2452 {
2453         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2454         struct lpfc_hba   *phba = vport->phba;
2455         unsigned long flags = 0;
2456
2457         if (unlikely(!phba))
2458                 return;
2459
2460         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2461                 spin_lock_irqsave(&vport->work_port_lock, flags);
2462                 vport->work_port_events |= WORKER_DISC_TMO;
2463                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2464
2465                 spin_lock_irqsave(&phba->hbalock, flags);
2466                 if (phba->work_wait)
2467                         lpfc_worker_wake_up(phba);
2468                 spin_unlock_irqrestore(&phba->hbalock, flags);
2469         }
2470         return;
2471 }
2472
2473 static void
2474 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2475 {
2476         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2477         struct lpfc_hba  *phba = vport->phba;
2478         struct lpfc_sli  *psli = &phba->sli;
2479         struct lpfc_nodelist *ndlp, *next_ndlp;
2480         LPFC_MBOXQ_t *initlinkmbox;
2481         int rc, clrlaerr = 0;
2482
2483         if (!(vport->fc_flag & FC_DISC_TMO))
2484                 return;
2485
2486         spin_lock_irq(shost->host_lock);
2487         vport->fc_flag &= ~FC_DISC_TMO;
2488         spin_unlock_irq(shost->host_lock);
2489
2490         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2491                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2492                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2493
2494         switch (vport->port_state) {
2495
2496         case LPFC_LOCAL_CFG_LINK:
2497         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2498          * FAN
2499          */
2500                                 /* FAN timeout */
2501                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2502                                  "0221 FAN timeout\n");
2503                 /* Start discovery by sending FLOGI, clean up old rpis */
2504                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2505                                          nlp_listp) {
2506                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2507                                 continue;
2508                         if (ndlp->nlp_type & NLP_FABRIC) {
2509                                 /* Clean up the ndlp on Fabric connections */
2510                                 lpfc_drop_node(vport, ndlp);
2511                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2512                                 /* Fail outstanding IO now since device
2513                                  * is marked for PLOGI.
2514                                  */
2515                                 lpfc_unreg_rpi(vport, ndlp);
2516                         }
2517                 }
2518                 if (vport->port_state != LPFC_FLOGI) {
2519                         vport->port_state = LPFC_FLOGI;
2520                         lpfc_set_disctmo(vport);
2521                         lpfc_initial_flogi(vport);
2522                 }
2523                 break;
2524
2525         case LPFC_FDISC:
2526         case LPFC_FLOGI:
2527         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2528                 /* Initial FLOGI timeout */
2529                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2530                                  "0222 Initial %s timeout\n",
2531                                  vport->vpi ? "FLOGI" : "FDISC");
2532
2533                 /* Assume no Fabric and go on with discovery.
2534                  * Check for outstanding ELS FLOGI to abort.
2535                  */
2536
2537                 /* FLOGI failed, so just use loop map to make discovery list */
2538                 lpfc_disc_list_loopmap(vport);
2539
2540                 /* Start discovery */
2541                 lpfc_disc_start(vport);
2542                 break;
2543
2544         case LPFC_FABRIC_CFG_LINK:
2545         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2546            NameServer login */
2547                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2548                                  "0223 Timeout while waiting for "
2549                                  "NameServer login\n");
2550                 /* Next look for NameServer ndlp */
2551                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2552                 if (ndlp)
2553                         lpfc_nlp_put(ndlp);
2554                 /* Start discovery */
2555                 lpfc_disc_start(vport);
2556                 break;
2557
2558         case LPFC_NS_QRY:
2559         /* Check for wait for NameServer Rsp timeout */
2560                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2561                                  "0224 NameServer Query timeout "
2562                                  "Data: x%x x%x\n",
2563                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2564
2565                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2566                         /* Try it one more time */
2567                         vport->fc_ns_retry++;
2568                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2569                                          vport->fc_ns_retry, 0);
2570                         if (rc == 0)
2571                                 break;
2572                 }
2573                 vport->fc_ns_retry = 0;
2574
2575                 /*
2576                  * Discovery is over.
2577                  * set port_state to PORT_READY if SLI2.
2578                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2579                  */
2580                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2581                         lpfc_issue_reg_vpi(phba, vport);
2582                 else  { /* NPIV Not enabled */
2583                         lpfc_issue_clear_la(phba, vport);
2584                         vport->port_state = LPFC_VPORT_READY;
2585                 }
2586
2587                 /* Setup and issue mailbox INITIALIZE LINK command */
2588                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2589                 if (!initlinkmbox) {
2590                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2591                                          "0206 Device Discovery "
2592                                          "completion error\n");
2593                         phba->link_state = LPFC_HBA_ERROR;
2594                         break;
2595                 }
2596
2597                 lpfc_linkdown(phba);
2598                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2599                                phba->cfg_link_speed);
2600                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2601                 initlinkmbox->vport = vport;
2602                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2603                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2604                 lpfc_set_loopback_flag(phba);
2605                 if (rc == MBX_NOT_FINISHED)
2606                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2607
2608                 break;
2609
2610         case LPFC_DISC_AUTH:
2611         /* Node Authentication timeout */
2612                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2613                                  "0227 Node Authentication timeout\n");
2614                 lpfc_disc_flush_list(vport);
2615
2616                 /*
2617                  * set port_state to PORT_READY if SLI2.
2618                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2619                  */
2620                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2621                         lpfc_issue_reg_vpi(phba, vport);
2622                 else {  /* NPIV Not enabled */
2623                         lpfc_issue_clear_la(phba, vport);
2624                         vport->port_state = LPFC_VPORT_READY;
2625                 }
2626                 break;
2627
2628         case LPFC_VPORT_READY:
2629                 if (vport->fc_flag & FC_RSCN_MODE) {
2630                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2631                                          "0231 RSCN timeout Data: x%x "
2632                                          "x%x\n",
2633                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2634
2635                         /* Cleanup any outstanding ELS commands */
2636                         lpfc_els_flush_cmd(vport);
2637
2638                         lpfc_els_flush_rscn(vport);
2639                         lpfc_disc_flush_list(vport);
2640                 }
2641                 break;
2642
2643         default:
2644                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2645                                  "0229 Unexpected discovery timeout, "
2646                                  "vport State x%x\n", vport->port_state);
2647                 break;
2648         }
2649
2650         switch (phba->link_state) {
2651         case LPFC_CLEAR_LA:
2652                                 /* CLEAR LA timeout */
2653                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2654                                  "0228 CLEAR LA timeout\n");
2655                 clrlaerr = 1;
2656                 break;
2657
2658         case LPFC_LINK_UNKNOWN:
2659         case LPFC_WARM_START:
2660         case LPFC_INIT_START:
2661         case LPFC_INIT_MBX_CMDS:
2662         case LPFC_LINK_DOWN:
2663         case LPFC_LINK_UP:
2664         case LPFC_HBA_ERROR:
2665                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2666                                  "0230 Unexpected timeout, hba link "
2667                                  "state x%x\n", phba->link_state);
2668                 clrlaerr = 1;
2669                 break;
2670
2671         case LPFC_HBA_READY:
2672                 break;
2673         }
2674
2675         if (clrlaerr) {
2676                 lpfc_disc_flush_list(vport);
2677                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2678                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2679                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2680                 vport->port_state = LPFC_VPORT_READY;
2681         }
2682
2683         return;
2684 }
2685
2686 /*
2687  * This routine handles processing a NameServer REG_LOGIN mailbox
2688  * command upon completion. It is setup in the LPFC_MBOXQ
2689  * as the completion routine when the command is
2690  * handed off to the SLI layer.
2691  */
2692 void
2693 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2694 {
2695         MAILBOX_t *mb = &pmb->mb;
2696         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2697         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2698         struct lpfc_vport    *vport = pmb->vport;
2699
2700         pmb->context1 = NULL;
2701
2702         ndlp->nlp_rpi = mb->un.varWords[0];
2703         ndlp->nlp_type |= NLP_FABRIC;
2704         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2705
2706         /*
2707          * Start issuing Fabric-Device Management Interface (FDMI) command to
2708          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2709          * fdmi-on=2 (supporting RPA/hostnmae)
2710          */
2711
2712         if (vport->cfg_fdmi_on == 1)
2713                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2714         else
2715                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2716
2717                                 /* Mailbox took a reference to the node */
2718         lpfc_nlp_put(ndlp);
2719         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2720         kfree(mp);
2721         mempool_free(pmb, phba->mbox_mem_pool);
2722
2723         return;
2724 }
2725
2726 static int
2727 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2728 {
2729         uint16_t *rpi = param;
2730
2731         return ndlp->nlp_rpi == *rpi;
2732 }
2733
2734 static int
2735 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2736 {
2737         return memcmp(&ndlp->nlp_portname, param,
2738                       sizeof(ndlp->nlp_portname)) == 0;
2739 }
2740
2741 struct lpfc_nodelist *
2742 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2743 {
2744         struct lpfc_nodelist *ndlp;
2745
2746         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2747                 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE &&
2748                     filter(ndlp, param))
2749                         return ndlp;
2750         }
2751         return NULL;
2752 }
2753
2754 /*
2755  * Search node lists for a remote port matching filter criteria
2756  * Caller needs to hold host_lock before calling this routine.
2757  */
2758 struct lpfc_nodelist *
2759 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2760 {
2761         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2762         struct lpfc_nodelist *ndlp;
2763
2764         spin_lock_irq(shost->host_lock);
2765         ndlp = __lpfc_find_node(vport, filter, param);
2766         spin_unlock_irq(shost->host_lock);
2767         return ndlp;
2768 }
2769
2770 /*
2771  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2772  * returns the node list element pointer else return NULL.
2773  */
2774 struct lpfc_nodelist *
2775 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2776 {
2777         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2778 }
2779
2780 struct lpfc_nodelist *
2781 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2782 {
2783         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2784         struct lpfc_nodelist *ndlp;
2785
2786         spin_lock_irq(shost->host_lock);
2787         ndlp = __lpfc_findnode_rpi(vport, rpi);
2788         spin_unlock_irq(shost->host_lock);
2789         return ndlp;
2790 }
2791
2792 /*
2793  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2794  * returns the node element list pointer else return NULL.
2795  */
2796 struct lpfc_nodelist *
2797 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2798 {
2799         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2800         struct lpfc_nodelist *ndlp;
2801
2802         spin_lock_irq(shost->host_lock);
2803         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2804         spin_unlock_irq(shost->host_lock);
2805         return ndlp;
2806 }
2807
2808 void
2809 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2810               uint32_t did)
2811 {
2812         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2813         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2814         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2815         init_timer(&ndlp->nlp_delayfunc);
2816         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2817         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2818         ndlp->nlp_DID = did;
2819         ndlp->vport = vport;
2820         ndlp->nlp_sid = NLP_NO_SID;
2821         INIT_LIST_HEAD(&ndlp->nlp_listp);
2822         kref_init(&ndlp->kref);
2823
2824         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2825                 "node init:       did:x%x",
2826                 ndlp->nlp_DID, 0, 0);
2827
2828         return;
2829 }
2830
2831 static void
2832 lpfc_nlp_release(struct kref *kref)
2833 {
2834         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2835                                                   kref);
2836
2837         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2838                 "node release:    did:x%x flg:x%x type:x%x",
2839                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2840
2841         lpfc_nlp_remove(ndlp->vport, ndlp);
2842         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2843 }
2844
2845 struct lpfc_nodelist *
2846 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2847 {
2848         if (ndlp)
2849                 kref_get(&ndlp->kref);
2850         return ndlp;
2851 }
2852
2853 int
2854 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2855 {
2856         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2857 }