err.no Git - linux-2.6/blob - drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_vport.h"
  40 #include "lpfc_debugfs.h"
  41
  42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  43 static uint8_t lpfcAlpaArray[] = {
  44         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  45         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  46         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  47         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  48         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  49         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  50         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  51         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  52         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  53         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  54         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  55         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  56         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  57 };
  58
  59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  60
  61 void
  62 lpfc_terminate_rport_io(struct fc_rport *rport)
  63 {
  64         struct lpfc_rport_data *rdata;
  65         struct lpfc_nodelist * ndlp;
  66         struct lpfc_hba *phba;
  67
  68         rdata = rport->dd_data;
  69         ndlp = rdata->pnode;
  70
  71         if (!ndlp) {
  72                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  73                         printk(KERN_ERR "Cannot find remote node"
  74                         " to terminate I/O Data x%x\n",
  75                         rport->port_id);
  76                 return;
  77         }
  78
  79         phba  = ndlp->vport->phba;
  80
  81         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  82                 "rport terminate: sid:x%x did:x%x flg:x%x",
  83                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  84
  85         if (ndlp->nlp_sid != NLP_NO_SID) {
  86                 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
  87                         ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
  88         }
  89
  90         return;
  91 }
  92
  93 /*
  94  * This function will be called when dev_loss_tmo fire.
  95  */
  96 void
  97 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
  98 {
  99         struct lpfc_rport_data *rdata;
 100         struct lpfc_nodelist * ndlp;
 101         struct lpfc_vport *vport;
 102         struct lpfc_hba   *phba;
 103         struct completion devloss_compl;
 104         struct lpfc_work_evt *evtp;
 105
 106         rdata = rport->dd_data;
 107         ndlp = rdata->pnode;
 108
 109         if (!ndlp) {
 110                 if (rport->scsi_target_id != -1) {
 111                         printk(KERN_ERR "Cannot find remote node"
 112                                 " for rport in dev_loss_tmo_callbk x%x\n",
 113                                 rport->port_id);
 114                 }
 115                 return;
 116         }
 117
 118         vport = ndlp->vport;
 119         phba  = vport->phba;
 120
 121         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 122                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 123                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 124
 125         init_completion(&devloss_compl);
 126         evtp = &ndlp->dev_loss_evt;
 127
 128         if (!list_empty(&evtp->evt_listp))
 129                 return;
 130
 131         spin_lock_irq(&phba->hbalock);
 132         evtp->evt_arg1  = ndlp;
 133         evtp->evt_arg2  = &devloss_compl;
 134         evtp->evt       = LPFC_EVT_DEV_LOSS;
 135         list_add_tail(&evtp->evt_listp, &phba->work_list);
 136         if (phba->work_wait)
 137                 wake_up(phba->work_wait);
 138
 139         spin_unlock_irq(&phba->hbalock);
 140
 141         wait_for_completion(&devloss_compl);
 142
 143         return;
 144 }
 145
 146 /*
 147  * This function is called from the worker thread when dev_loss_tmo
 148  * expire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 152 {
 153         struct lpfc_rport_data *rdata;
 154         struct fc_rport   *rport;
 155         struct lpfc_vport *vport;
 156         struct lpfc_hba   *phba;
 157         uint8_t *name;
 158         int warn_on = 0;
 159
 160         rport = ndlp->rport;
 161
 162         if (!rport)
 163                 return;
 164
 165         rdata = rport->dd_data;
 166         name = (uint8_t *) &ndlp->nlp_portname;
 167         vport = ndlp->vport;
 168         phba  = vport->phba;
 169
 170         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 171                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 172                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 173
 174         if (!(vport->load_flag & FC_UNLOADING) &&
 175             ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 176                 return;
 177
 178         if (ndlp->nlp_type & NLP_FABRIC) {
 179                 int  put_node;
 180                 int  put_rport;
 181
 182                 /* We will clean up these Nodes in linkup */
 183                 put_node = rdata->pnode != NULL;
 184                 put_rport = ndlp->rport != NULL;
 185                 rdata->pnode = NULL;
 186                 ndlp->rport = NULL;
 187                 if (put_node)
 188                         lpfc_nlp_put(ndlp);
 189                 if (put_rport)
 190                         put_device(&rport->dev);
 191                 return;
 192         }
 193
 194         if (ndlp->nlp_sid != NLP_NO_SID) {
 195                 warn_on = 1;
 196                 /* flush the target */
 197                 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
 198                                     ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
 199         }
 200         if (vport->load_flag & FC_UNLOADING)
 201                 warn_on = 0;
 202
 203         if (warn_on) {
 204                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 205                                  "0203 Devloss timeout on "
 206                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 207                                  "NPort x%x Data: x%x x%x x%x\n",
 208                                  *name, *(name+1), *(name+2), *(name+3),
 209                                  *(name+4), *(name+5), *(name+6), *(name+7),
 210                                  ndlp->nlp_DID, ndlp->nlp_flag,
 211                                  ndlp->nlp_state, ndlp->nlp_rpi);
 212         } else {
 213                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 214                                  "0204 Devloss timeout on "
 215                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 216                                  "NPort x%x Data: x%x x%x x%x\n",
 217                                  *name, *(name+1), *(name+2), *(name+3),
 218                                  *(name+4), *(name+5), *(name+6), *(name+7),
 219                                  ndlp->nlp_DID, ndlp->nlp_flag,
 220                                  ndlp->nlp_state, ndlp->nlp_rpi);
 221         }
 222
 223         if (!(vport->load_flag & FC_UNLOADING) &&
 224             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 225             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 226             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 227                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 228         else {
 229                 int  put_node;
 230                 int  put_rport;
 231
 232                 put_node = rdata->pnode != NULL;
 233                 put_rport = ndlp->rport != NULL;
 234                 rdata->pnode = NULL;
 235                 ndlp->rport = NULL;
 236                 if (put_node)
 237                         lpfc_nlp_put(ndlp);
 238                 if (put_rport)
 239                         put_device(&rport->dev);
 240         }
 241 }
 242
 243
 244 void
 245 lpfc_worker_wake_up(struct lpfc_hba *phba)
 246 {
 247         wake_up(phba->work_wait);
 248         return;
 249 }
 250
 251 static void
 252 lpfc_work_list_done(struct lpfc_hba *phba)
 253 {
 254         struct lpfc_work_evt  *evtp = NULL;
 255         struct lpfc_nodelist  *ndlp;
 256         struct lpfc_vport     *vport;
 257         int free_evt;
 258
 259         spin_lock_irq(&phba->hbalock);
 260         while (!list_empty(&phba->work_list)) {
 261                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 262                                  evt_listp);
 263                 spin_unlock_irq(&phba->hbalock);
 264                 free_evt = 1;
 265                 switch (evtp->evt) {
 266                 case LPFC_EVT_DEV_LOSS_DELAY:
 267                         free_evt = 0; /* evt is part of ndlp */
 268                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 269                         vport = ndlp->vport;
 270                         if (!vport)
 271                                 break;
 272
 273                         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 274                                 "rport devlossdly:did:x%x flg:x%x",
 275                                 ndlp->nlp_DID, ndlp->nlp_flag, 0);
 276
 277                         if (!(vport->load_flag & FC_UNLOADING) &&
 278                             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 279                             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
 280                                 lpfc_disc_state_machine(vport, ndlp, NULL,
 281                                         NLP_EVT_DEVICE_RM);
 282                         }
 283                         break;
 284                 case LPFC_EVT_ELS_RETRY:
 285                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 286                         lpfc_els_retry_delay_handler(ndlp);
 287                         free_evt = 0; /* evt is part of ndlp */
 288                         break;
 289                 case LPFC_EVT_DEV_LOSS:
 290                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 291                         lpfc_nlp_get(ndlp);
 292                         lpfc_dev_loss_tmo_handler(ndlp);
 293                         free_evt = 0;
 294                         complete((struct completion *)(evtp->evt_arg2));
 295                         lpfc_nlp_put(ndlp);
 296                         break;
 297                 case LPFC_EVT_ONLINE:
 298                         if (phba->link_state < LPFC_LINK_DOWN)
 299                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 300                         else
 301                                 *(int *) (evtp->evt_arg1) = 0;
 302                         complete((struct completion *)(evtp->evt_arg2));
 303                         break;
 304                 case LPFC_EVT_OFFLINE_PREP:
 305                         if (phba->link_state >= LPFC_LINK_DOWN)
 306                                 lpfc_offline_prep(phba);
 307                         *(int *)(evtp->evt_arg1) = 0;
 308                         complete((struct completion *)(evtp->evt_arg2));
 309                         break;
 310                 case LPFC_EVT_OFFLINE:
 311                         lpfc_offline(phba);
 312                         lpfc_sli_brdrestart(phba);
 313                         *(int *)(evtp->evt_arg1) =
 314                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 315                         lpfc_unblock_mgmt_io(phba);
 316                         complete((struct completion *)(evtp->evt_arg2));
 317                         break;
 318                 case LPFC_EVT_WARM_START:
 319                         lpfc_offline(phba);
 320                         lpfc_reset_barrier(phba);
 321                         lpfc_sli_brdreset(phba);
 322                         lpfc_hba_down_post(phba);
 323                         *(int *)(evtp->evt_arg1) =
 324                                 lpfc_sli_brdready(phba, HS_MBRDY);
 325                         lpfc_unblock_mgmt_io(phba);
 326                         complete((struct completion *)(evtp->evt_arg2));
 327                         break;
 328                 case LPFC_EVT_KILL:
 329                         lpfc_offline(phba);
 330                         *(int *)(evtp->evt_arg1)
 331                                 = (phba->pport->stopped)
 332                                         ? 0 : lpfc_sli_brdkill(phba);
 333                         lpfc_unblock_mgmt_io(phba);
 334                         complete((struct completion *)(evtp->evt_arg2));
 335                         break;
 336                 }
 337                 if (free_evt)
 338                         kfree(evtp);
 339                 spin_lock_irq(&phba->hbalock);
 340         }
 341         spin_unlock_irq(&phba->hbalock);
 342
 343 }
 344
 345 void
 346 lpfc_work_done(struct lpfc_hba *phba)
 347 {
 348         struct lpfc_sli_ring *pring;
 349         uint32_t ha_copy, status, control, work_port_events;
 350         struct lpfc_vport **vports;
 351         int i;
 352
 353         spin_lock_irq(&phba->hbalock);
 354         ha_copy = phba->work_ha;
 355         phba->work_ha = 0;
 356         spin_unlock_irq(&phba->hbalock);
 357
 358         if (ha_copy & HA_ERATT)
 359                 lpfc_handle_eratt(phba);
 360
 361         if (ha_copy & HA_MBATT)
 362                 lpfc_sli_handle_mb_event(phba);
 363
 364         if (ha_copy & HA_LATT)
 365                 lpfc_handle_latt(phba);
 366         vports = lpfc_create_vport_work_array(phba);
 367         if (vports != NULL)
 368                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 369                         work_port_events = vports[i]->work_port_events;
 370                         if (work_port_events & WORKER_DISC_TMO)
 371                                 lpfc_disc_timeout_handler(vports[i]);
 372                         if (work_port_events & WORKER_ELS_TMO)
 373                                 lpfc_els_timeout_handler(vports[i]);
 374                         if (work_port_events & WORKER_HB_TMO)
 375                                 lpfc_hb_timeout_handler(phba);
 376                         if (work_port_events & WORKER_MBOX_TMO)
 377                                 lpfc_mbox_timeout_handler(phba);
 378                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 379                                 lpfc_unblock_fabric_iocbs(phba);
 380                         if (work_port_events & WORKER_FDMI_TMO)
 381                                 lpfc_fdmi_timeout_handler(vports[i]);
 382                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 383                                 lpfc_ramp_down_queue_handler(phba);
 384                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 385                                 lpfc_ramp_up_queue_handler(phba);
 386                         spin_lock_irq(&vports[i]->work_port_lock);
 387                         vports[i]->work_port_events &= ~work_port_events;
 388                         spin_unlock_irq(&vports[i]->work_port_lock);
 389                 }
 390         lpfc_destroy_vport_work_array(vports);
 391
 392         pring = &phba->sli.ring[LPFC_ELS_RING];
 393         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 394         status >>= (4*LPFC_ELS_RING);
 395         if ((status & HA_RXMASK)
 396                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 397                 if (pring->flag & LPFC_STOP_IOCB_MASK) {
 398                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 399                 } else {
 400                         lpfc_sli_handle_slow_ring_event(phba, pring,
 401                                                         (status &
 402                                                          HA_RXMASK));
 403                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 404                 }
 405                 /*
 406                  * Turn on Ring interrupts
 407                  */
 408                 spin_lock_irq(&phba->hbalock);
 409                 control = readl(phba->HCregaddr);
 410                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 411                         lpfc_debugfs_slow_ring_trc(phba,
 412                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 413                                 control, ha_copy, 0);
 414
 415                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 416                         writel(control, phba->HCregaddr);
 417                         readl(phba->HCregaddr); /* flush */
 418                 }
 419                 else {
 420                         lpfc_debugfs_slow_ring_trc(phba,
 421                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 422                                 control, ha_copy, 0);
 423                 }
 424                 spin_unlock_irq(&phba->hbalock);
 425         }
 426         lpfc_work_list_done(phba);
 427 }
 428
 429 static int
 430 check_work_wait_done(struct lpfc_hba *phba)
 431 {
 432         struct lpfc_vport *vport;
 433         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 434         int rc = 0;
 435
 436         spin_lock_irq(&phba->hbalock);
 437         list_for_each_entry(vport, &phba->port_list, listentry) {
 438                 if (vport->work_port_events) {
 439                         rc = 1;
 440                         break;
 441                 }
 442         }
 443         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 444             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 445                 rc = 1;
 446                 phba->work_found++;
 447         } else
 448                 phba->work_found = 0;
 449         spin_unlock_irq(&phba->hbalock);
 450         return rc;
 451 }
 452
 453
 454 int
 455 lpfc_do_work(void *p)
 456 {
 457         struct lpfc_hba *phba = p;
 458         int rc;
 459         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 460
 461         set_user_nice(current, -20);
 462         phba->work_wait = &work_waitq;
 463         phba->work_found = 0;
 464
 465         while (1) {
 466
 467                 rc = wait_event_interruptible(work_waitq,
 468                                               check_work_wait_done(phba));
 469
 470                 BUG_ON(rc);
 471
 472                 if (kthread_should_stop())
 473                         break;
 474
 475                 lpfc_work_done(phba);
 476
 477                 /* If there is alot of slow ring work, like during link up
 478                  * check_work_wait_done() may cause this thread to not give
 479                  * up the CPU for very long periods of time. This may cause
 480                  * soft lockups or other problems. To avoid these situations
 481                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 482                  * consecutive iterations.
 483                  */
 484                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 485                         phba->work_found = 0;
 486                         schedule();
 487                 }
 488         }
 489         phba->work_wait = NULL;
 490         return 0;
 491 }
 492
 493 /*
 494  * This is only called to handle FC worker events. Since this a rare
 495  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 496  * embedding it in the IOCB.
 497  */
 498 int
 499 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 500                       uint32_t evt)
 501 {
 502         struct lpfc_work_evt  *evtp;
 503         unsigned long flags;
 504
 505         /*
 506          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 507          * be queued to worker thread for processing
 508          */
 509         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 510         if (!evtp)
 511                 return 0;
 512
 513         evtp->evt_arg1  = arg1;
 514         evtp->evt_arg2  = arg2;
 515         evtp->evt       = evt;
 516
 517         spin_lock_irqsave(&phba->hbalock, flags);
 518         list_add_tail(&evtp->evt_listp, &phba->work_list);
 519         if (phba->work_wait)
 520                 lpfc_worker_wake_up(phba);
 521         spin_unlock_irqrestore(&phba->hbalock, flags);
 522
 523         return 1;
 524 }
 525
 526 void
 527 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 528 {
 529         struct lpfc_hba  *phba = vport->phba;
 530         struct lpfc_nodelist *ndlp, *next_ndlp;
 531         int  rc;
 532
 533         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 534                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 535                         continue;
 536
 537                 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN)
 538                         lpfc_unreg_rpi(vport, ndlp);
 539
 540                 /* Leave Fabric nodes alone on link down */
 541                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 542                         continue;
 543                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 544                                              remove
 545                                              ? NLP_EVT_DEVICE_RM
 546                                              : NLP_EVT_DEVICE_RECOVERY);
 547         }
 548         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 549                 lpfc_mbx_unreg_vpi(vport);
 550                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 551         }
 552 }
 553
 554 static void
 555 lpfc_linkdown_port(struct lpfc_vport *vport)
 556 {
 557         struct lpfc_nodelist *ndlp, *next_ndlp;
 558         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 559
 560         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 561
 562         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 563                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 564                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 565
 566         /* Cleanup any outstanding RSCN activity */
 567         lpfc_els_flush_rscn(vport);
 568
 569         /* Cleanup any outstanding ELS commands */
 570         lpfc_els_flush_cmd(vport);
 571
 572         lpfc_cleanup_rpis(vport, 0);
 573
 574         /* free any ndlp's on unused list */
 575         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
 576                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 577                         lpfc_drop_node(vport, ndlp);
 578
 579         /* Turn off discovery timer if its running */
 580         lpfc_can_disctmo(vport);
 581 }
 582
 583 int
 584 lpfc_linkdown(struct lpfc_hba *phba)
 585 {
 586         struct lpfc_vport *vport = phba->pport;
 587         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 588         struct lpfc_vport **vports;
 589         LPFC_MBOXQ_t          *mb;
 590         int i;
 591
 592         if (phba->link_state == LPFC_LINK_DOWN) {
 593                 return 0;
 594         }
 595         spin_lock_irq(&phba->hbalock);
 596         if (phba->link_state > LPFC_LINK_DOWN) {
 597                 phba->link_state = LPFC_LINK_DOWN;
 598                 phba->pport->fc_flag &= ~FC_LBIT;
 599         }
 600         spin_unlock_irq(&phba->hbalock);
 601         vports = lpfc_create_vport_work_array(phba);
 602         if (vports != NULL)
 603                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 604                         /* Issue a LINK DOWN event to all nodes */
 605                         lpfc_linkdown_port(vports[i]);
 606                 }
 607         lpfc_destroy_vport_work_array(vports);
 608         /* Clean up any firmware default rpi's */
 609         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 610         if (mb) {
 611                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 612                 mb->vport = vport;
 613                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 614                 if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
 615                     == MBX_NOT_FINISHED) {
 616                         mempool_free(mb, phba->mbox_mem_pool);
 617                 }
 618         }
 619
 620         /* Setup myDID for link up if we are in pt2pt mode */
 621         if (phba->pport->fc_flag & FC_PT2PT) {
 622                 phba->pport->fc_myDID = 0;
 623                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 624                 if (mb) {
 625                         lpfc_config_link(phba, mb);
 626                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 627                         mb->vport = vport;
 628                         if (lpfc_sli_issue_mbox(phba, mb,
 629                                                 (MBX_NOWAIT | MBX_STOP_IOCB))
 630                             == MBX_NOT_FINISHED) {
 631                                 mempool_free(mb, phba->mbox_mem_pool);
 632                         }
 633                 }
 634                 spin_lock_irq(shost->host_lock);
 635                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 636                 spin_unlock_irq(shost->host_lock);
 637         }
 638
 639         return 0;
 640 }
 641
 642 static void
 643 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 644 {
 645         struct lpfc_nodelist *ndlp;
 646
 647         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 648                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 649                         continue;
 650
 651                 if (ndlp->nlp_type & NLP_FABRIC) {
 652                                 /* On Linkup its safe to clean up the ndlp
 653                                  * from Fabric connections.
 654                                  */
 655                         if (ndlp->nlp_DID != Fabric_DID)
 656                                 lpfc_unreg_rpi(vport, ndlp);
 657                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 658                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 659                                 /* Fail outstanding IO now since device is
 660                                  * marked for PLOGI.
 661                                  */
 662                         lpfc_unreg_rpi(vport, ndlp);
 663                 }
 664         }
 665 }
 666
 667 static void
 668 lpfc_linkup_port(struct lpfc_vport *vport)
 669 {
 670         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 671         struct lpfc_nodelist *ndlp, *next_ndlp;
 672         struct lpfc_hba  *phba = vport->phba;
 673
 674         if ((vport->load_flag & FC_UNLOADING) != 0)
 675                 return;
 676
 677         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 678                 "Link Up:         top:x%x speed:x%x flg:x%x",
 679                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 680
 681         /* If NPIV is not enabled, only bring the physical port up */
 682         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 683                 (vport != phba->pport))
 684                 return;
 685
 686         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 687
 688         spin_lock_irq(shost->host_lock);
 689         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 690                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 691         vport->fc_flag |= FC_NDISC_ACTIVE;
 692         vport->fc_ns_retry = 0;
 693         spin_unlock_irq(shost->host_lock);
 694
 695         if (vport->fc_flag & FC_LBIT)
 696                 lpfc_linkup_cleanup_nodes(vport);
 697
 698                                 /* free any ndlp's in unused state */
 699         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
 700                                  nlp_listp)
 701                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 702                         lpfc_drop_node(vport, ndlp);
 703 }
 704
 705 static int
 706 lpfc_linkup(struct lpfc_hba *phba)
 707 {
 708         struct lpfc_vport **vports;
 709         int i;
 710
 711         phba->link_state = LPFC_LINK_UP;
 712
 713         /* Unblock fabric iocbs if they are blocked */
 714         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 715         del_timer_sync(&phba->fabric_block_timer);
 716
 717         vports = lpfc_create_vport_work_array(phba);
 718         if (vports != NULL)
 719                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
 720                         lpfc_linkup_port(vports[i]);
 721         lpfc_destroy_vport_work_array(vports);
 722         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 723                 lpfc_issue_clear_la(phba, phba->pport);
 724
 725         return 0;
 726 }
 727
 728 /*
 729  * This routine handles processing a CLEAR_LA mailbox
 730  * command upon completion. It is setup in the LPFC_MBOXQ
 731  * as the completion routine when the command is
 732  * handed off to the SLI layer.
 733  */
 734 void
 735 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 736 {
 737         struct lpfc_vport *vport = pmb->vport;
 738         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 739         struct lpfc_sli   *psli = &phba->sli;
 740         MAILBOX_t *mb = &pmb->mb;
 741         uint32_t control;
 742
 743         /* Since we don't do discovery right now, turn these off here */
 744         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 745         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 746         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 747
 748         /* Check for error */
 749         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 750                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 751                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 752                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 753                                  "state x%x\n",
 754                                  mb->mbxStatus, vport->port_state);
 755                 phba->link_state = LPFC_HBA_ERROR;
 756                 goto out;
 757         }
 758
 759         if (vport->port_type == LPFC_PHYSICAL_PORT)
 760                 phba->link_state = LPFC_HBA_READY;
 761
 762         spin_lock_irq(&phba->hbalock);
 763         psli->sli_flag |= LPFC_PROCESS_LA;
 764         control = readl(phba->HCregaddr);
 765         control |= HC_LAINT_ENA;
 766         writel(control, phba->HCregaddr);
 767         readl(phba->HCregaddr); /* flush */
 768         spin_unlock_irq(&phba->hbalock);
 769         return;
 770
 771         vport->num_disc_nodes = 0;
 772         /* go thru NPR nodes and issue ELS PLOGIs */
 773         if (vport->fc_npr_cnt)
 774                 lpfc_els_disc_plogi(vport);
 775
 776         if (!vport->num_disc_nodes) {
 777                 spin_lock_irq(shost->host_lock);
 778                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 779                 spin_unlock_irq(shost->host_lock);
 780         }
 781
 782         vport->port_state = LPFC_VPORT_READY;
 783
 784 out:
 785         /* Device Discovery completes */
 786         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 787                          "0225 Device Discovery completes\n");
 788         mempool_free(pmb, phba->mbox_mem_pool);
 789
 790         spin_lock_irq(shost->host_lock);
 791         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 792         spin_unlock_irq(shost->host_lock);
 793
 794         del_timer_sync(&phba->fc_estabtmo);
 795
 796         lpfc_can_disctmo(vport);
 797
 798         /* turn on Link Attention interrupts */
 799
 800         spin_lock_irq(&phba->hbalock);
 801         psli->sli_flag |= LPFC_PROCESS_LA;
 802         control = readl(phba->HCregaddr);
 803         control |= HC_LAINT_ENA;
 804         writel(control, phba->HCregaddr);
 805         readl(phba->HCregaddr); /* flush */
 806         spin_unlock_irq(&phba->hbalock);
 807
 808         return;
 809 }
 810
 811
 812 static void
 813 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 814 {
 815         struct lpfc_vport *vport = pmb->vport;
 816
 817         if (pmb->mb.mbxStatus)
 818                 goto out;
 819
 820         mempool_free(pmb, phba->mbox_mem_pool);
 821
 822         if (phba->fc_topology == TOPOLOGY_LOOP &&
 823             vport->fc_flag & FC_PUBLIC_LOOP &&
 824             !(vport->fc_flag & FC_LBIT)) {
 825                         /* Need to wait for FAN - use discovery timer
 826                          * for timeout.  port_state is identically
 827                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 828                          */
 829                         lpfc_set_disctmo(vport);
 830                         return;
 831         }
 832
 833         /* Start discovery by sending a FLOGI. port_state is identically
 834          * LPFC_FLOGI while waiting for FLOGI cmpl
 835          */
 836         if (vport->port_state != LPFC_FLOGI) {
 837                 vport->port_state = LPFC_FLOGI;
 838                 lpfc_set_disctmo(vport);
 839                 lpfc_initial_flogi(vport);
 840         }
 841         return;
 842
 843 out:
 844         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 845                          "0306 CONFIG_LINK mbxStatus error x%x "
 846                          "HBA state x%x\n",
 847                          pmb->mb.mbxStatus, vport->port_state);
 848         mempool_free(pmb, phba->mbox_mem_pool);
 849
 850         lpfc_linkdown(phba);
 851
 852         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 853                          "0200 CONFIG_LINK bad hba state x%x\n",
 854                          vport->port_state);
 855
 856         lpfc_issue_clear_la(phba, vport);
 857         return;
 858 }
 859
 860 static void
 861 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 862 {
 863         MAILBOX_t *mb = &pmb->mb;
 864         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 865         struct lpfc_vport  *vport = pmb->vport;
 866
 867
 868         /* Check for error */
 869         if (mb->mbxStatus) {
 870                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 871                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 872                                  "0319 READ_SPARAM mbxStatus error x%x "
 873                                  "hba state x%x>\n",
 874                                  mb->mbxStatus, vport->port_state);
 875                 lpfc_linkdown(phba);
 876                 goto out;
 877         }
 878
 879         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 880                sizeof (struct serv_parm));
 881         if (phba->cfg_soft_wwnn)
 882                 u64_to_wwn(phba->cfg_soft_wwnn,
 883                            vport->fc_sparam.nodeName.u.wwn);
 884         if (phba->cfg_soft_wwpn)
 885                 u64_to_wwn(phba->cfg_soft_wwpn,
 886                            vport->fc_sparam.portName.u.wwn);
 887         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 888                sizeof(vport->fc_nodename));
 889         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 890                sizeof(vport->fc_portname));
 891         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 892                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 893                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 894         }
 895
 896         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 897         kfree(mp);
 898         mempool_free(pmb, phba->mbox_mem_pool);
 899         return;
 900
 901 out:
 902         pmb->context1 = NULL;
 903         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 904         kfree(mp);
 905         lpfc_issue_clear_la(phba, vport);
 906         mempool_free(pmb, phba->mbox_mem_pool);
 907         return;
 908 }
 909
 910 static void
 911 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 912 {
 913         struct lpfc_vport *vport = phba->pport;
 914         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 915         int i;
 916         struct lpfc_dmabuf *mp;
 917         int rc;
 918
 919         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 920         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 921
 922         spin_lock_irq(&phba->hbalock);
 923         switch (la->UlnkSpeed) {
 924         case LA_1GHZ_LINK:
 925                 phba->fc_linkspeed = LA_1GHZ_LINK;
 926                 break;
 927         case LA_2GHZ_LINK:
 928                 phba->fc_linkspeed = LA_2GHZ_LINK;
 929                 break;
 930         case LA_4GHZ_LINK:
 931                 phba->fc_linkspeed = LA_4GHZ_LINK;
 932                 break;
 933         case LA_8GHZ_LINK:
 934                 phba->fc_linkspeed = LA_8GHZ_LINK;
 935                 break;
 936         default:
 937                 phba->fc_linkspeed = LA_UNKNW_LINK;
 938                 break;
 939         }
 940
 941         phba->fc_topology = la->topology;
 942         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 943
 944         if (phba->fc_topology == TOPOLOGY_LOOP) {
 945                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 946
 947                                 /* Get Loop Map information */
 948                 if (la->il)
 949                         vport->fc_flag |= FC_LBIT;
 950
 951                 vport->fc_myDID = la->granted_AL_PA;
 952                 i = la->un.lilpBde64.tus.f.bdeSize;
 953
 954                 if (i == 0) {
 955                         phba->alpa_map[0] = 0;
 956                 } else {
 957                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 958                                 int numalpa, j, k;
 959                                 union {
 960                                         uint8_t pamap[16];
 961                                         struct {
 962                                                 uint32_t wd1;
 963                                                 uint32_t wd2;
 964                                                 uint32_t wd3;
 965                                                 uint32_t wd4;
 966                                         } pa;
 967                                 } un;
 968                                 numalpa = phba->alpa_map[0];
 969                                 j = 0;
 970                                 while (j < numalpa) {
 971                                         memset(un.pamap, 0, 16);
 972                                         for (k = 1; j < numalpa; k++) {
 973                                                 un.pamap[k - 1] =
 974                                                         phba->alpa_map[j + 1];
 975                                                 j++;
 976                                                 if (k == 16)
 977                                                         break;
 978                                         }
 979                                         /* Link Up Event ALPA map */
 980                                         lpfc_printf_log(phba,
 981                                                         KERN_WARNING,
 982                                                         LOG_LINK_EVENT,
 983                                                         "1304 Link Up Event "
 984                                                         "ALPA map Data: x%x "
 985                                                         "x%x x%x x%x\n",
 986                                                         un.pa.wd1, un.pa.wd2,
 987                                                         un.pa.wd3, un.pa.wd4);
 988                                 }
 989                         }
 990                 }
 991         } else {
 992                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
 993                         if (phba->max_vpi && phba->cfg_npiv_enable &&
 994                            (phba->sli_rev == 3))
 995                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
 996                 }
 997                 vport->fc_myDID = phba->fc_pref_DID;
 998                 vport->fc_flag |= FC_LBIT;
 999         }
1000         spin_unlock_irq(&phba->hbalock);
1001
1002         lpfc_linkup(phba);
1003         if (sparam_mbox) {
1004                 lpfc_read_sparam(phba, sparam_mbox, 0);
1005                 sparam_mbox->vport = vport;
1006                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1007                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox,
1008                                     (MBX_NOWAIT | MBX_STOP_IOCB));
1009                 if (rc == MBX_NOT_FINISHED) {
1010                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1011                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1012                         kfree(mp);
1013                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1014                         if (cfglink_mbox)
1015                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1016                         goto out;
1017                 }
1018         }
1019
1020         if (cfglink_mbox) {
1021                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1022                 lpfc_config_link(phba, cfglink_mbox);
1023                 cfglink_mbox->vport = vport;
1024                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1025                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox,
1026                                     (MBX_NOWAIT | MBX_STOP_IOCB));
1027                 if (rc != MBX_NOT_FINISHED)
1028                         return;
1029                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1030         }
1031 out:
1032         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1033         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1034                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1035                          vport->port_state, sparam_mbox, cfglink_mbox);
1036         lpfc_issue_clear_la(phba, vport);
1037         return;
1038 }
1039
1040 static void
1041 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1042 {
1043         uint32_t control;
1044         struct lpfc_sli *psli = &phba->sli;
1045
1046         lpfc_linkdown(phba);
1047
1048         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1049         spin_lock_irq(&phba->hbalock);
1050         psli->sli_flag |= LPFC_PROCESS_LA;
1051         control = readl(phba->HCregaddr);
1052         control |= HC_LAINT_ENA;
1053         writel(control, phba->HCregaddr);
1054         readl(phba->HCregaddr); /* flush */
1055         spin_unlock_irq(&phba->hbalock);
1056 }
1057
1058 /*
1059  * This routine handles processing a READ_LA mailbox
1060  * command upon completion. It is setup in the LPFC_MBOXQ
1061  * as the completion routine when the command is
1062  * handed off to the SLI layer.
1063  */
1064 void
1065 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1066 {
1067         struct lpfc_vport *vport = pmb->vport;
1068         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1069         READ_LA_VAR *la;
1070         MAILBOX_t *mb = &pmb->mb;
1071         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1072
1073         /* Check for error */
1074         if (mb->mbxStatus) {
1075                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1076                                 "1307 READ_LA mbox error x%x state x%x\n",
1077                                 mb->mbxStatus, vport->port_state);
1078                 lpfc_mbx_issue_link_down(phba);
1079                 phba->link_state = LPFC_HBA_ERROR;
1080                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1081         }
1082
1083         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1084
1085         memcpy(&phba->alpa_map[0], mp->virt, 128);
1086
1087         spin_lock_irq(shost->host_lock);
1088         if (la->pb)
1089                 vport->fc_flag |= FC_BYPASSED_MODE;
1090         else
1091                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1092         spin_unlock_irq(shost->host_lock);
1093
1094         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1095             (phba->fc_eventTag == la->eventTag)) {
1096                 phba->fc_stat.LinkMultiEvent++;
1097                 if (la->attType == AT_LINK_UP)
1098                         if (phba->fc_eventTag != 0)
1099                                 lpfc_linkdown(phba);
1100         }
1101
1102         phba->fc_eventTag = la->eventTag;
1103
1104         if (la->attType == AT_LINK_UP) {
1105                 phba->fc_stat.LinkUp++;
1106                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1107                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1108                                         "1306 Link Up Event in loop back mode "
1109                                         "x%x received Data: x%x x%x x%x x%x\n",
1110                                         la->eventTag, phba->fc_eventTag,
1111                                         la->granted_AL_PA, la->UlnkSpeed,
1112                                         phba->alpa_map[0]);
1113                 } else {
1114                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1115                                         "1303 Link Up Event x%x received "
1116                                         "Data: x%x x%x x%x x%x\n",
1117                                         la->eventTag, phba->fc_eventTag,
1118                                         la->granted_AL_PA, la->UlnkSpeed,
1119                                         phba->alpa_map[0]);
1120                 }
1121                 lpfc_mbx_process_link_up(phba, la);
1122         } else {
1123                 phba->fc_stat.LinkDown++;
1124                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1125                                 "1305 Link Down Event x%x received "
1126                                 "Data: x%x x%x x%x\n",
1127                                 la->eventTag, phba->fc_eventTag,
1128                                 phba->pport->port_state, vport->fc_flag);
1129                 lpfc_mbx_issue_link_down(phba);
1130         }
1131
1132 lpfc_mbx_cmpl_read_la_free_mbuf:
1133         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1134         kfree(mp);
1135         mempool_free(pmb, phba->mbox_mem_pool);
1136         return;
1137 }
1138
1139 /*
1140  * This routine handles processing a REG_LOGIN mailbox
1141  * command upon completion. It is setup in the LPFC_MBOXQ
1142  * as the completion routine when the command is
1143  * handed off to the SLI layer.
1144  */
1145 void
1146 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1147 {
1148         struct lpfc_vport  *vport = pmb->vport;
1149         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1150         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1151
1152         pmb->context1 = NULL;
1153
1154         /* Good status, call state machine */
1155         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1156         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1157         kfree(mp);
1158         mempool_free(pmb, phba->mbox_mem_pool);
1159         lpfc_nlp_put(ndlp);
1160
1161         return;
1162 }
1163
1164 static void
1165 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1166 {
1167         MAILBOX_t *mb = &pmb->mb;
1168         struct lpfc_vport *vport = pmb->vport;
1169         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1170
1171         switch (mb->mbxStatus) {
1172         case 0x0011:
1173         case 0x0020:
1174         case 0x9700:
1175                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1176                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1177                                  mb->mbxStatus);
1178                 break;
1179         }
1180         vport->unreg_vpi_cmpl = VPORT_OK;
1181         mempool_free(pmb, phba->mbox_mem_pool);
1182         /*
1183          * This shost reference might have been taken at the beginning of
1184          * lpfc_vport_delete()
1185          */
1186         if (vport->load_flag & FC_UNLOADING)
1187                 scsi_host_put(shost);
1188 }
1189
1190 void
1191 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1192 {
1193         struct lpfc_hba  *phba = vport->phba;
1194         LPFC_MBOXQ_t *mbox;
1195         int rc;
1196
1197         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1198         if (!mbox)
1199                 return;
1200
1201         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1202         mbox->vport = vport;
1203         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1204         rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
1205         if (rc == MBX_NOT_FINISHED) {
1206                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1207                                  "1800 Could not issue unreg_vpi\n");
1208                 mempool_free(mbox, phba->mbox_mem_pool);
1209                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1210         }
1211 }
1212
1213 static void
1214 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1215 {
1216         struct lpfc_vport *vport = pmb->vport;
1217         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1218         MAILBOX_t *mb = &pmb->mb;
1219
1220         switch (mb->mbxStatus) {
1221         case 0x0011:
1222         case 0x9601:
1223         case 0x9602:
1224                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1225                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1226                                  mb->mbxStatus);
1227                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1228                 spin_lock_irq(shost->host_lock);
1229                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1230                 spin_unlock_irq(shost->host_lock);
1231                 vport->fc_myDID = 0;
1232                 goto out;
1233         }
1234
1235         vport->num_disc_nodes = 0;
1236         /* go thru NPR list and issue ELS PLOGIs */
1237         if (vport->fc_npr_cnt)
1238                 lpfc_els_disc_plogi(vport);
1239
1240         if (!vport->num_disc_nodes) {
1241                 spin_lock_irq(shost->host_lock);
1242                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1243                 spin_unlock_irq(shost->host_lock);
1244                 lpfc_can_disctmo(vport);
1245         }
1246         vport->port_state = LPFC_VPORT_READY;
1247
1248 out:
1249         mempool_free(pmb, phba->mbox_mem_pool);
1250         return;
1251 }
1252
1253 /*
1254  * This routine handles processing a Fabric REG_LOGIN mailbox
1255  * command upon completion. It is setup in the LPFC_MBOXQ
1256  * as the completion routine when the command is
1257  * handed off to the SLI layer.
1258  */
1259 void
1260 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1261 {
1262         struct lpfc_vport *vport = pmb->vport;
1263         MAILBOX_t *mb = &pmb->mb;
1264         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1265         struct lpfc_nodelist *ndlp;
1266         struct lpfc_vport **vports;
1267         int i;
1268
1269         ndlp = (struct lpfc_nodelist *) pmb->context2;
1270         pmb->context1 = NULL;
1271         pmb->context2 = NULL;
1272         if (mb->mbxStatus) {
1273                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1274                 kfree(mp);
1275                 mempool_free(pmb, phba->mbox_mem_pool);
1276                 lpfc_nlp_put(ndlp);
1277
1278                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1279                         /* FLOGI failed, use loop map to make discovery list */
1280                         lpfc_disc_list_loopmap(vport);
1281
1282                         /* Start discovery */
1283                         lpfc_disc_start(vport);
1284                         return;
1285                 }
1286
1287                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1288                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1289                                  "0258 Register Fabric login error: 0x%x\n",
1290                                  mb->mbxStatus);
1291                 return;
1292         }
1293
1294         ndlp->nlp_rpi = mb->un.varWords[0];
1295         ndlp->nlp_type |= NLP_FABRIC;
1296         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1297
1298         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1299
1300         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1301                 vports = lpfc_create_vport_work_array(phba);
1302                 if (vports != NULL)
1303                         for(i = 0;
1304                             i < LPFC_MAX_VPORTS && vports[i] != NULL;
1305                             i++) {
1306                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1307                                         continue;
1308                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1309                                         lpfc_initial_fdisc(vports[i]);
1310                                 else if (phba->sli3_options &
1311                                                 LPFC_SLI3_NPIV_ENABLED) {
1312                                         lpfc_vport_set_state(vports[i],
1313                                                 FC_VPORT_NO_FABRIC_SUPP);
1314                                         lpfc_printf_vlog(vport, KERN_ERR,
1315                                                          LOG_ELS,
1316                                                         "0259 No NPIV "
1317                                                         "Fabric support\n");
1318                                 }
1319                         }
1320                 lpfc_destroy_vport_work_array(vports);
1321                 lpfc_do_scr_ns_plogi(phba, vport);
1322         }
1323
1324         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1325         kfree(mp);
1326         mempool_free(pmb, phba->mbox_mem_pool);
1327         return;
1328 }
1329
1330 /*
1331  * This routine handles processing a NameServer REG_LOGIN mailbox
1332  * command upon completion. It is setup in the LPFC_MBOXQ
1333  * as the completion routine when the command is
1334  * handed off to the SLI layer.
1335  */
1336 void
1337 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1338 {
1339         MAILBOX_t *mb = &pmb->mb;
1340         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1341         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1342         struct lpfc_vport *vport = pmb->vport;
1343
1344         if (mb->mbxStatus) {
1345 out:
1346                 lpfc_nlp_put(ndlp);
1347                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1348                 kfree(mp);
1349                 mempool_free(pmb, phba->mbox_mem_pool);
1350                 lpfc_drop_node(vport, ndlp);
1351
1352                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1353                         /*
1354                          * RegLogin failed, use loop map to make discovery
1355                          * list
1356                          */
1357                         lpfc_disc_list_loopmap(vport);
1358
1359                         /* Start discovery */
1360                         lpfc_disc_start(vport);
1361                         return;
1362                 }
1363                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1364                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1365                                  "0260 Register NameServer error: 0x%x\n",
1366                                  mb->mbxStatus);
1367                 return;
1368         }
1369
1370         pmb->context1 = NULL;
1371
1372         ndlp->nlp_rpi = mb->un.varWords[0];
1373         ndlp->nlp_type |= NLP_FABRIC;
1374         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1375
1376         if (vport->port_state < LPFC_VPORT_READY) {
1377                 /* Link up discovery requires Fabric registration. */
1378                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1379                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1380                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1381                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1382                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1383
1384                 /* Issue SCR just before NameServer GID_FT Query */
1385                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1386         }
1387
1388         vport->fc_ns_retry = 0;
1389         /* Good status, issue CT Request to NameServer */
1390         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1391                 /* Cannot issue NameServer Query, so finish up discovery */
1392                 goto out;
1393         }
1394
1395         lpfc_nlp_put(ndlp);
1396         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1397         kfree(mp);
1398         mempool_free(pmb, phba->mbox_mem_pool);
1399
1400         return;
1401 }
1402
1403 static void
1404 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1405 {
1406         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1407         struct fc_rport  *rport;
1408         struct lpfc_rport_data *rdata;
1409         struct fc_rport_identifiers rport_ids;
1410         struct lpfc_hba  *phba = vport->phba;
1411
1412         /* Remote port has reappeared. Re-register w/ FC transport */
1413         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1414         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1415         rport_ids.port_id = ndlp->nlp_DID;
1416         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1417
1418         /*
1419          * We leave our node pointer in rport->dd_data when we unregister a
1420          * FCP target port.  But fc_remote_port_add zeros the space to which
1421          * rport->dd_data points.  So, if we're reusing a previously
1422          * registered port, drop the reference that we took the last time we
1423          * registered the port.
1424          */
1425         if (ndlp->rport && ndlp->rport->dd_data &&
1426             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1427                 lpfc_nlp_put(ndlp);
1428         }
1429
1430         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1431                 "rport add:       did:x%x flg:x%x type x%x",
1432                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1433
1434         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1435         if (!rport || !get_device(&rport->dev)) {
1436                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1437                            "Warning: fc_remote_port_add failed\n");
1438                 return;
1439         }
1440
1441         /* initialize static port data */
1442         rport->maxframe_size = ndlp->nlp_maxframe;
1443         rport->supported_classes = ndlp->nlp_class_sup;
1444         rdata = rport->dd_data;
1445         rdata->pnode = lpfc_nlp_get(ndlp);
1446
1447         if (ndlp->nlp_type & NLP_FCP_TARGET)
1448                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1449         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1450                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1451
1452
1453         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1454                 fc_remote_port_rolechg(rport, rport_ids.roles);
1455
1456         if ((rport->scsi_target_id != -1) &&
1457             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1458                 ndlp->nlp_sid = rport->scsi_target_id;
1459         }
1460         return;
1461 }
1462
1463 static void
1464 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1465 {
1466         struct fc_rport *rport = ndlp->rport;
1467
1468         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1469                 "rport delete:    did:x%x flg:x%x type x%x",
1470                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1471
1472         fc_remote_port_delete(rport);
1473
1474         return;
1475 }
1476
1477 static void
1478 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1479 {
1480         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1481
1482         spin_lock_irq(shost->host_lock);
1483         switch (state) {
1484         case NLP_STE_UNUSED_NODE:
1485                 vport->fc_unused_cnt += count;
1486                 break;
1487         case NLP_STE_PLOGI_ISSUE:
1488                 vport->fc_plogi_cnt += count;
1489                 break;
1490         case NLP_STE_ADISC_ISSUE:
1491                 vport->fc_adisc_cnt += count;
1492                 break;
1493         case NLP_STE_REG_LOGIN_ISSUE:
1494                 vport->fc_reglogin_cnt += count;
1495                 break;
1496         case NLP_STE_PRLI_ISSUE:
1497                 vport->fc_prli_cnt += count;
1498                 break;
1499         case NLP_STE_UNMAPPED_NODE:
1500                 vport->fc_unmap_cnt += count;
1501                 break;
1502         case NLP_STE_MAPPED_NODE:
1503                 vport->fc_map_cnt += count;
1504                 break;
1505         case NLP_STE_NPR_NODE:
1506                 vport->fc_npr_cnt += count;
1507                 break;
1508         }
1509         spin_unlock_irq(shost->host_lock);
1510 }
1511
1512 static void
1513 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1514                        int old_state, int new_state)
1515 {
1516         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1517
1518         if (new_state == NLP_STE_UNMAPPED_NODE) {
1519                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1520                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1521                 ndlp->nlp_type |= NLP_FC_NODE;
1522         }
1523         if (new_state == NLP_STE_MAPPED_NODE)
1524                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1525         if (new_state == NLP_STE_NPR_NODE)
1526                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1527
1528         /* Transport interface */
1529         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1530                             old_state == NLP_STE_UNMAPPED_NODE)) {
1531                 vport->phba->nport_event_cnt++;
1532                 lpfc_unregister_remote_port(ndlp);
1533         }
1534
1535         if (new_state ==  NLP_STE_MAPPED_NODE ||
1536             new_state == NLP_STE_UNMAPPED_NODE) {
1537                 vport->phba->nport_event_cnt++;
1538                 /*
1539                  * Tell the fc transport about the port, if we haven't
1540                  * already. If we have, and it's a scsi entity, be
1541                  * sure to unblock any attached scsi devices
1542                  */
1543                 lpfc_register_remote_port(vport, ndlp);
1544         }
1545         /*
1546          * if we added to Mapped list, but the remote port
1547          * registration failed or assigned a target id outside
1548          * our presentable range - move the node to the
1549          * Unmapped List
1550          */
1551         if (new_state == NLP_STE_MAPPED_NODE &&
1552             (!ndlp->rport ||
1553              ndlp->rport->scsi_target_id == -1 ||
1554              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1555                 spin_lock_irq(shost->host_lock);
1556                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1557                 spin_unlock_irq(shost->host_lock);
1558                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1559         }
1560 }
1561
1562 static char *
1563 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1564 {
1565         static char *states[] = {
1566                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1567                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1568                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1569                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1570                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1571                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1572                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1573                 [NLP_STE_NPR_NODE] = "NPR",
1574         };
1575
1576         if (state < ARRAY_SIZE(states) && states[state])
1577                 strlcpy(buffer, states[state], size);
1578         else
1579                 snprintf(buffer, size, "unknown (%d)", state);
1580         return buffer;
1581 }
1582
1583 void
1584 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1585                    int state)
1586 {
1587         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1588         int  old_state = ndlp->nlp_state;
1589         char name1[16], name2[16];
1590
1591         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1592                          "0904 NPort state transition x%06x, %s -> %s\n",
1593                          ndlp->nlp_DID,
1594                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1595                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1596
1597         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1598                 "node statechg    did:x%x old:%d ste:%d",
1599                 ndlp->nlp_DID, old_state, state);
1600
1601         if (old_state == NLP_STE_NPR_NODE &&
1602             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1603             state != NLP_STE_NPR_NODE)
1604                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1605         if (old_state == NLP_STE_UNMAPPED_NODE) {
1606                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1607                 ndlp->nlp_type &= ~NLP_FC_NODE;
1608         }
1609
1610         if (list_empty(&ndlp->nlp_listp)) {
1611                 spin_lock_irq(shost->host_lock);
1612                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1613                 spin_unlock_irq(shost->host_lock);
1614         } else if (old_state)
1615                 lpfc_nlp_counters(vport, old_state, -1);
1616
1617         ndlp->nlp_state = state;
1618         lpfc_nlp_counters(vport, state, 1);
1619         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1620 }
1621
1622 void
1623 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1624 {
1625         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1626
1627         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1628                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1629         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1630                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1631         spin_lock_irq(shost->host_lock);
1632         list_del_init(&ndlp->nlp_listp);
1633         spin_unlock_irq(shost->host_lock);
1634         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1635                                NLP_STE_UNUSED_NODE);
1636 }
1637
1638 void
1639 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1640 {
1641         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1642
1643         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1644                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1645         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1646                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1647         spin_lock_irq(shost->host_lock);
1648         list_del_init(&ndlp->nlp_listp);
1649         ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
1650         spin_unlock_irq(shost->host_lock);
1651         lpfc_nlp_put(ndlp);
1652 }
1653
1654 /*
1655  * Start / ReStart rescue timer for Discovery / RSCN handling
1656  */
1657 void
1658 lpfc_set_disctmo(struct lpfc_vport *vport)
1659 {
1660         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1661         struct lpfc_hba  *phba = vport->phba;
1662         uint32_t tmo;
1663
1664         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1665                 /* For FAN, timeout should be greater then edtov */
1666                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1667         } else {
1668                 /* Normal discovery timeout should be > then ELS/CT timeout
1669                  * FC spec states we need 3 * ratov for CT requests
1670                  */
1671                 tmo = ((phba->fc_ratov * 3) + 3);
1672         }
1673
1674
1675         if (!timer_pending(&vport->fc_disctmo)) {
1676                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1677                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1678                         tmo, vport->port_state, vport->fc_flag);
1679         }
1680
1681         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1682         spin_lock_irq(shost->host_lock);
1683         vport->fc_flag |= FC_DISC_TMO;
1684         spin_unlock_irq(shost->host_lock);
1685
1686         /* Start Discovery Timer state <hba_state> */
1687         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1688                          "0247 Start Discovery Timer state x%x "
1689                          "Data: x%x x%lx x%x x%x\n",
1690                          vport->port_state, tmo,
1691                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1692                          vport->fc_adisc_cnt);
1693
1694         return;
1695 }
1696
1697 /*
1698  * Cancel rescue timer for Discovery / RSCN handling
1699  */
1700 int
1701 lpfc_can_disctmo(struct lpfc_vport *vport)
1702 {
1703         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1704         unsigned long iflags;
1705
1706         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1707                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1708                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1709
1710         /* Turn off discovery timer if its running */
1711         if (vport->fc_flag & FC_DISC_TMO) {
1712                 spin_lock_irqsave(shost->host_lock, iflags);
1713                 vport->fc_flag &= ~FC_DISC_TMO;
1714                 spin_unlock_irqrestore(shost->host_lock, iflags);
1715                 del_timer_sync(&vport->fc_disctmo);
1716                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1717                 vport->work_port_events &= ~WORKER_DISC_TMO;
1718                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1719         }
1720
1721         /* Cancel Discovery Timer state <hba_state> */
1722         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1723                          "0248 Cancel Discovery Timer state x%x "
1724                          "Data: x%x x%x x%x\n",
1725                          vport->port_state, vport->fc_flag,
1726                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1727         return 0;
1728 }
1729
1730 /*
1731  * Check specified ring for outstanding IOCB on the SLI queue
1732  * Return true if iocb matches the specified nport
1733  */
1734 int
1735 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1736                     struct lpfc_sli_ring *pring,
1737                     struct lpfc_iocbq *iocb,
1738                     struct lpfc_nodelist *ndlp)
1739 {
1740         struct lpfc_sli *psli = &phba->sli;
1741         IOCB_t *icmd = &iocb->iocb;
1742         struct lpfc_vport    *vport = ndlp->vport;
1743
1744         if (iocb->vport != vport)
1745                 return 0;
1746
1747         if (pring->ringno == LPFC_ELS_RING) {
1748                 switch (icmd->ulpCommand) {
1749                 case CMD_GEN_REQUEST64_CR:
1750                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1751                                 return 1;
1752                 case CMD_ELS_REQUEST64_CR:
1753                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1754                                 return 1;
1755                 case CMD_XMIT_ELS_RSP64_CX:
1756                         if (iocb->context1 == (uint8_t *) ndlp)
1757                                 return 1;
1758                 }
1759         } else if (pring->ringno == psli->extra_ring) {
1760
1761         } else if (pring->ringno == psli->fcp_ring) {
1762                 /* Skip match check if waiting to relogin to FCP target */
1763                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1764                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1765                         return 0;
1766                 }
1767                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1768                         return 1;
1769                 }
1770         } else if (pring->ringno == psli->next_ring) {
1771
1772         }
1773         return 0;
1774 }
1775
1776 /*
1777  * Free resources / clean up outstanding I/Os
1778  * associated with nlp_rpi in the LPFC_NODELIST entry.
1779  */
1780 static int
1781 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1782 {
1783         LIST_HEAD(completions);
1784         struct lpfc_sli *psli;
1785         struct lpfc_sli_ring *pring;
1786         struct lpfc_iocbq *iocb, *next_iocb;
1787         IOCB_t *icmd;
1788         uint32_t rpi, i;
1789
1790         lpfc_fabric_abort_nport(ndlp);
1791
1792         /*
1793          * Everything that matches on txcmplq will be returned
1794          * by firmware with a no rpi error.
1795          */
1796         psli = &phba->sli;
1797         rpi = ndlp->nlp_rpi;
1798         if (rpi) {
1799                 /* Now process each ring */
1800                 for (i = 0; i < psli->num_rings; i++) {
1801                         pring = &psli->ring[i];
1802
1803                         spin_lock_irq(&phba->hbalock);
1804                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1805                                                  list) {
1806                                 /*
1807                                  * Check to see if iocb matches the nport we are
1808                                  * looking for
1809                                  */
1810                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1811                                                          ndlp))) {
1812                                         /* It matches, so deque and call compl
1813                                            with an error */
1814                                         list_move_tail(&iocb->list,
1815                                                        &completions);
1816                                         pring->txq_cnt--;
1817                                 }
1818                         }
1819                         spin_unlock_irq(&phba->hbalock);
1820                 }
1821         }
1822
1823         while (!list_empty(&completions)) {
1824                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1825                 list_del_init(&iocb->list);
1826
1827                 if (!iocb->iocb_cmpl)
1828                         lpfc_sli_release_iocbq(phba, iocb);
1829                 else {
1830                         icmd = &iocb->iocb;
1831                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1832                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1833                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1834                 }
1835         }
1836
1837         return 0;
1838 }
1839
1840 /*
1841  * Free rpi associated with LPFC_NODELIST entry.
1842  * This routine is called from lpfc_freenode(), when we are removing
1843  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1844  * LOGO that completes successfully, and we are waiting to PLOGI back
1845  * to the remote NPort. In addition, it is called after we receive
1846  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1847  * we are waiting to PLOGI back to the remote NPort.
1848  */
1849 int
1850 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1851 {
1852         struct lpfc_hba *phba = vport->phba;
1853         LPFC_MBOXQ_t    *mbox;
1854         int rc;
1855
1856         if (ndlp->nlp_rpi) {
1857                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1858                 if (mbox) {
1859                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1860                         mbox->vport = vport;
1861                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1862                         rc = lpfc_sli_issue_mbox(phba, mbox,
1863                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
1864                         if (rc == MBX_NOT_FINISHED)
1865                                 mempool_free(mbox, phba->mbox_mem_pool);
1866                 }
1867                 lpfc_no_rpi(phba, ndlp);
1868                 ndlp->nlp_rpi = 0;
1869                 return 1;
1870         }
1871         return 0;
1872 }
1873
1874 void
1875 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1876 {
1877         struct lpfc_hba  *phba  = vport->phba;
1878         LPFC_MBOXQ_t     *mbox;
1879         int rc;
1880
1881         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1882         if (mbox) {
1883                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1884                 mbox->vport = vport;
1885                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1886                 rc = lpfc_sli_issue_mbox(phba, mbox,
1887                                          (MBX_NOWAIT | MBX_STOP_IOCB));
1888                 if (rc == MBX_NOT_FINISHED) {
1889                         mempool_free(mbox, phba->mbox_mem_pool);
1890                 }
1891         }
1892 }
1893
1894 void
1895 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1896 {
1897         struct lpfc_hba  *phba  = vport->phba;
1898         LPFC_MBOXQ_t     *mbox;
1899         int rc;
1900
1901         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1902         if (mbox) {
1903                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1904                 mbox->vport = vport;
1905                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1906                 rc = lpfc_sli_issue_mbox(phba, mbox,
1907                                          (MBX_NOWAIT | MBX_STOP_IOCB));
1908                 if (rc == MBX_NOT_FINISHED) {
1909                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1910                                          "1815 Could not issue "
1911                                          "unreg_did (default rpis)\n");
1912                         mempool_free(mbox, phba->mbox_mem_pool);
1913                 }
1914         }
1915 }
1916
1917 /*
1918  * Free resources associated with LPFC_NODELIST entry
1919  * so it can be freed.
1920  */
1921 static int
1922 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1923 {
1924         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1925         struct lpfc_hba  *phba = vport->phba;
1926         LPFC_MBOXQ_t *mb, *nextmb;
1927         struct lpfc_dmabuf *mp;
1928
1929         /* Cleanup node for NPort <nlp_DID> */
1930         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1931                          "0900 Cleanup node for NPort x%x "
1932                          "Data: x%x x%x x%x\n",
1933                          ndlp->nlp_DID, ndlp->nlp_flag,
1934                          ndlp->nlp_state, ndlp->nlp_rpi);
1935         lpfc_dequeue_node(vport, ndlp);
1936
1937         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1938         if ((mb = phba->sli.mbox_active)) {
1939                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1940                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1941                         mb->context2 = NULL;
1942                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1943                 }
1944         }
1945
1946         spin_lock_irq(&phba->hbalock);
1947         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1948                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1949                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1950                         mp = (struct lpfc_dmabuf *) (mb->context1);
1951                         if (mp) {
1952                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1953                                 kfree(mp);
1954                         }
1955                         list_del(&mb->list);
1956                         mempool_free(mb, phba->mbox_mem_pool);
1957                         lpfc_nlp_put(ndlp);
1958                 }
1959         }
1960         spin_unlock_irq(&phba->hbalock);
1961
1962         lpfc_els_abort(phba,ndlp);
1963         spin_lock_irq(shost->host_lock);
1964         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1965         spin_unlock_irq(shost->host_lock);
1966
1967         ndlp->nlp_last_elscmd = 0;
1968         del_timer_sync(&ndlp->nlp_delayfunc);
1969
1970         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1971                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1972         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1973                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1974
1975         if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) {
1976                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1977                 complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2));
1978         }
1979
1980         lpfc_unreg_rpi(vport, ndlp);
1981
1982         return 0;
1983 }
1984
1985 /*
1986  * Check to see if we can free the nlp back to the freelist.
1987  * If we are in the middle of using the nlp in the discovery state
1988  * machine, defer the free till we reach the end of the state machine.
1989  */
1990 static void
1991 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1992 {
1993         struct lpfc_rport_data *rdata;
1994
1995         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1996                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1997         }
1998
1999         lpfc_cleanup_node(vport, ndlp);
2000
2001         /*
2002          * We can get here with a non-NULL ndlp->rport because when we
2003          * unregister a rport we don't break the rport/node linkage.  So if we
2004          * do, make sure we don't leaving any dangling pointers behind.
2005          */
2006         if (ndlp->rport) {
2007                 rdata = ndlp->rport->dd_data;
2008                 rdata->pnode = NULL;
2009                 ndlp->rport = NULL;
2010         }
2011 }
2012
2013 static int
2014 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2015               uint32_t did)
2016 {
2017         D_ID mydid, ndlpdid, matchdid;
2018
2019         if (did == Bcast_DID)
2020                 return 0;
2021
2022         if (ndlp->nlp_DID == 0) {
2023                 return 0;
2024         }
2025
2026         /* First check for Direct match */
2027         if (ndlp->nlp_DID == did)
2028                 return 1;
2029
2030         /* Next check for area/domain identically equals 0 match */
2031         mydid.un.word = vport->fc_myDID;
2032         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2033                 return 0;
2034         }
2035
2036         matchdid.un.word = did;
2037         ndlpdid.un.word = ndlp->nlp_DID;
2038         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2039                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2040                     (mydid.un.b.area == matchdid.un.b.area)) {
2041                         if ((ndlpdid.un.b.domain == 0) &&
2042                             (ndlpdid.un.b.area == 0)) {
2043                                 if (ndlpdid.un.b.id)
2044                                         return 1;
2045                         }
2046                         return 0;
2047                 }
2048
2049                 matchdid.un.word = ndlp->nlp_DID;
2050                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2051                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2052                         if ((matchdid.un.b.domain == 0) &&
2053                             (matchdid.un.b.area == 0)) {
2054                                 if (matchdid.un.b.id)
2055                                         return 1;
2056                         }
2057                 }
2058         }
2059         return 0;
2060 }
2061
2062 /* Search for a nodelist entry */
2063 static struct lpfc_nodelist *
2064 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2065 {
2066         struct lpfc_nodelist *ndlp;
2067         uint32_t data1;
2068
2069         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2070                 if (lpfc_matchdid(vport, ndlp, did)) {
2071                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2072                                  ((uint32_t) ndlp->nlp_xri << 16) |
2073                                  ((uint32_t) ndlp->nlp_type << 8) |
2074                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2075                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2076                                          "0929 FIND node DID "
2077                                          "Data: x%p x%x x%x x%x\n",
2078                                          ndlp, ndlp->nlp_DID,
2079                                          ndlp->nlp_flag, data1);
2080                         return ndlp;
2081                 }
2082         }
2083
2084         /* FIND node did <did> NOT FOUND */
2085         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2086                          "0932 FIND node did x%x NOT FOUND.\n", did);
2087         return NULL;
2088 }
2089
2090 struct lpfc_nodelist *
2091 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2092 {
2093         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2094         struct lpfc_nodelist *ndlp;
2095
2096         spin_lock_irq(shost->host_lock);
2097         ndlp = __lpfc_findnode_did(vport, did);
2098         spin_unlock_irq(shost->host_lock);
2099         return ndlp;
2100 }
2101
2102 struct lpfc_nodelist *
2103 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2104 {
2105         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2106         struct lpfc_nodelist *ndlp;
2107
2108         ndlp = lpfc_findnode_did(vport, did);
2109         if (!ndlp) {
2110                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2111                     lpfc_rscn_payload_check(vport, did) == 0)
2112                         return NULL;
2113                 ndlp = (struct lpfc_nodelist *)
2114                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2115                 if (!ndlp)
2116                         return NULL;
2117                 lpfc_nlp_init(vport, ndlp, did);
2118                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2119                 spin_lock_irq(shost->host_lock);
2120                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2121                 spin_unlock_irq(shost->host_lock);
2122                 return ndlp;
2123         }
2124         if (vport->fc_flag & FC_RSCN_MODE) {
2125                 if (lpfc_rscn_payload_check(vport, did)) {
2126                         spin_lock_irq(shost->host_lock);
2127                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2128                         spin_unlock_irq(shost->host_lock);
2129
2130                         /* Since this node is marked for discovery,
2131                          * delay timeout is not needed.
2132                          */
2133                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2134                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2135                 } else
2136                         ndlp = NULL;
2137         } else {
2138                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2139                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
2140                         return NULL;
2141                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2142                 spin_lock_irq(shost->host_lock);
2143                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2144                 spin_unlock_irq(shost->host_lock);
2145         }
2146         return ndlp;
2147 }
2148
2149 /* Build a list of nodes to discover based on the loopmap */
2150 void
2151 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2152 {
2153         struct lpfc_hba  *phba = vport->phba;
2154         int j;
2155         uint32_t alpa, index;
2156
2157         if (!lpfc_is_link_up(phba))
2158                 return;
2159
2160         if (phba->fc_topology != TOPOLOGY_LOOP)
2161                 return;
2162
2163         /* Check for loop map present or not */
2164         if (phba->alpa_map[0]) {
2165                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2166                         alpa = phba->alpa_map[j];
2167                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2168                                 continue;
2169                         lpfc_setup_disc_node(vport, alpa);
2170                 }
2171         } else {
2172                 /* No alpamap, so try all alpa's */
2173                 for (j = 0; j < FC_MAXLOOP; j++) {
2174                         /* If cfg_scan_down is set, start from highest
2175                          * ALPA (0xef) to lowest (0x1).
2176                          */
2177                         if (vport->cfg_scan_down)
2178                                 index = j;
2179                         else
2180                                 index = FC_MAXLOOP - j - 1;
2181                         alpa = lpfcAlpaArray[index];
2182                         if ((vport->fc_myDID & 0xff) == alpa)
2183                                 continue;
2184                         lpfc_setup_disc_node(vport, alpa);
2185                 }
2186         }
2187         return;
2188 }
2189
2190 void
2191 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2192 {
2193         LPFC_MBOXQ_t *mbox;
2194         struct lpfc_sli *psli = &phba->sli;
2195         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2196         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2197         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2198         int  rc;
2199
2200         /*
2201          * if it's not a physical port or if we already send
2202          * clear_la then don't send it.
2203          */
2204         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2205             (vport->port_type != LPFC_PHYSICAL_PORT))
2206                 return;
2207
2208                         /* Link up discovery */
2209         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2210                 phba->link_state = LPFC_CLEAR_LA;
2211                 lpfc_clear_la(phba, mbox);
2212                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2213                 mbox->vport = vport;
2214                 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT |
2215                                                       MBX_STOP_IOCB));
2216                 if (rc == MBX_NOT_FINISHED) {
2217                         mempool_free(mbox, phba->mbox_mem_pool);
2218                         lpfc_disc_flush_list(vport);
2219                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2220                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2221                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2222                         phba->link_state = LPFC_HBA_ERROR;
2223                 }
2224         }
2225 }
2226
2227 /* Reg_vpi to tell firmware to resume normal operations */
2228 void
2229 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2230 {
2231         LPFC_MBOXQ_t *regvpimbox;
2232
2233         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2234         if (regvpimbox) {
2235                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2236                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2237                 regvpimbox->vport = vport;
2238                 if (lpfc_sli_issue_mbox(phba, regvpimbox,
2239                                         (MBX_NOWAIT | MBX_STOP_IOCB))
2240                                         == MBX_NOT_FINISHED) {
2241                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2242                 }
2243         }
2244 }
2245
2246 /* Start Link up / RSCN discovery on NPR nodes */
2247 void
2248 lpfc_disc_start(struct lpfc_vport *vport)
2249 {
2250         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2251         struct lpfc_hba  *phba = vport->phba;
2252         uint32_t num_sent;
2253         uint32_t clear_la_pending;
2254         int did_changed;
2255
2256         if (!lpfc_is_link_up(phba))
2257                 return;
2258
2259         if (phba->link_state == LPFC_CLEAR_LA)
2260                 clear_la_pending = 1;
2261         else
2262                 clear_la_pending = 0;
2263
2264         if (vport->port_state < LPFC_VPORT_READY)
2265                 vport->port_state = LPFC_DISC_AUTH;
2266
2267         lpfc_set_disctmo(vport);
2268
2269         if (vport->fc_prevDID == vport->fc_myDID)
2270                 did_changed = 0;
2271         else
2272                 did_changed = 1;
2273
2274         vport->fc_prevDID = vport->fc_myDID;
2275         vport->num_disc_nodes = 0;
2276
2277         /* Start Discovery state <hba_state> */
2278         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2279                          "0202 Start Discovery hba state x%x "
2280                          "Data: x%x x%x x%x\n",
2281                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2282                          vport->fc_adisc_cnt);
2283
2284         /* First do ADISCs - if any */
2285         num_sent = lpfc_els_disc_adisc(vport);
2286
2287         if (num_sent)
2288                 return;
2289
2290         /*
2291          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2292          * continue discovery.
2293          */
2294         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2295             !(vport->fc_flag & FC_RSCN_MODE)) {
2296                 lpfc_issue_reg_vpi(phba, vport);
2297                 return;
2298         }
2299
2300         /*
2301          * For SLI2, we need to set port_state to READY and continue
2302          * discovery.
2303          */
2304         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2305                 /* If we get here, there is nothing to ADISC */
2306                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2307                         lpfc_issue_clear_la(phba, vport);
2308
2309                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2310                         vport->num_disc_nodes = 0;
2311                         /* go thru NPR nodes and issue ELS PLOGIs */
2312                         if (vport->fc_npr_cnt)
2313                                 lpfc_els_disc_plogi(vport);
2314
2315                         if (!vport->num_disc_nodes) {
2316                                 spin_lock_irq(shost->host_lock);
2317                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2318                                 spin_unlock_irq(shost->host_lock);
2319                                 lpfc_can_disctmo(vport);
2320                         }
2321                 }
2322                 vport->port_state = LPFC_VPORT_READY;
2323         } else {
2324                 /* Next do PLOGIs - if any */
2325                 num_sent = lpfc_els_disc_plogi(vport);
2326
2327                 if (num_sent)
2328                         return;
2329
2330                 if (vport->fc_flag & FC_RSCN_MODE) {
2331                         /* Check to see if more RSCNs came in while we
2332                          * were processing this one.
2333                          */
2334                         if ((vport->fc_rscn_id_cnt == 0) &&
2335                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2336                                 spin_lock_irq(shost->host_lock);
2337                                 vport->fc_flag &= ~FC_RSCN_MODE;
2338                                 spin_unlock_irq(shost->host_lock);
2339                                 lpfc_can_disctmo(vport);
2340                         } else
2341                                 lpfc_els_handle_rscn(vport);
2342                 }
2343         }
2344         return;
2345 }
2346
2347 /*
2348  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2349  *  ring the match the sppecified nodelist.
2350  */
2351 static void
2352 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2353 {
2354         LIST_HEAD(completions);
2355         struct lpfc_sli *psli;
2356         IOCB_t     *icmd;
2357         struct lpfc_iocbq    *iocb, *next_iocb;
2358         struct lpfc_sli_ring *pring;
2359
2360         psli = &phba->sli;
2361         pring = &psli->ring[LPFC_ELS_RING];
2362
2363         /* Error matching iocb on txq or txcmplq
2364          * First check the txq.
2365          */
2366         spin_lock_irq(&phba->hbalock);
2367         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2368                 if (iocb->context1 != ndlp) {
2369                         continue;
2370                 }
2371                 icmd = &iocb->iocb;
2372                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2373                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2374
2375                         list_move_tail(&iocb->list, &completions);
2376                         pring->txq_cnt--;
2377                 }
2378         }
2379
2380         /* Next check the txcmplq */
2381         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2382                 if (iocb->context1 != ndlp) {
2383                         continue;
2384                 }
2385                 icmd = &iocb->iocb;
2386                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2387                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2388                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2389                 }
2390         }
2391         spin_unlock_irq(&phba->hbalock);
2392
2393         while (!list_empty(&completions)) {
2394                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2395                 list_del_init(&iocb->list);
2396
2397                 if (!iocb->iocb_cmpl)
2398                         lpfc_sli_release_iocbq(phba, iocb);
2399                 else {
2400                         icmd = &iocb->iocb;
2401                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2402                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2403                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2404                 }
2405         }
2406 }
2407
2408 void
2409 lpfc_disc_flush_list(struct lpfc_vport *vport)
2410 {
2411         struct lpfc_nodelist *ndlp, *next_ndlp;
2412         struct lpfc_hba *phba = vport->phba;
2413
2414         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2415                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2416                                          nlp_listp) {
2417                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2418                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2419                                 lpfc_free_tx(phba, ndlp);
2420                                 lpfc_nlp_put(ndlp);
2421                         }
2422                 }
2423         }
2424 }
2425
2426 void
2427 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2428 {
2429         lpfc_els_flush_rscn(vport);
2430         lpfc_els_flush_cmd(vport);
2431         lpfc_disc_flush_list(vport);
2432 }
2433
2434 /*****************************************************************************/
2435 /*
2436  * NAME:     lpfc_disc_timeout
2437  *
2438  * FUNCTION: Fibre Channel driver discovery timeout routine.
2439  *
2440  * EXECUTION ENVIRONMENT: interrupt only
2441  *
2442  * CALLED FROM:
2443  *      Timer function
2444  *
2445  * RETURNS:
2446  *      none
2447  */
2448 /*****************************************************************************/
2449 void
2450 lpfc_disc_timeout(unsigned long ptr)
2451 {
2452         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2453         struct lpfc_hba   *phba = vport->phba;
2454         unsigned long flags = 0;
2455
2456         if (unlikely(!phba))
2457                 return;
2458
2459         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2460                 spin_lock_irqsave(&vport->work_port_lock, flags);
2461                 vport->work_port_events |= WORKER_DISC_TMO;
2462                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2463
2464                 spin_lock_irqsave(&phba->hbalock, flags);
2465                 if (phba->work_wait)
2466                         lpfc_worker_wake_up(phba);
2467                 spin_unlock_irqrestore(&phba->hbalock, flags);
2468         }
2469         return;
2470 }
2471
2472 static void
2473 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2474 {
2475         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2476         struct lpfc_hba  *phba = vport->phba;
2477         struct lpfc_sli  *psli = &phba->sli;
2478         struct lpfc_nodelist *ndlp, *next_ndlp;
2479         LPFC_MBOXQ_t *initlinkmbox;
2480         int rc, clrlaerr = 0;
2481
2482         if (!(vport->fc_flag & FC_DISC_TMO))
2483                 return;
2484
2485         spin_lock_irq(shost->host_lock);
2486         vport->fc_flag &= ~FC_DISC_TMO;
2487         spin_unlock_irq(shost->host_lock);
2488
2489         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2490                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2491                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2492
2493         switch (vport->port_state) {
2494
2495         case LPFC_LOCAL_CFG_LINK:
2496         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2497          * FAN
2498          */
2499                                 /* FAN timeout */
2500                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2501                                  "0221 FAN timeout\n");
2502                 /* Start discovery by sending FLOGI, clean up old rpis */
2503                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2504                                          nlp_listp) {
2505                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2506                                 continue;
2507                         if (ndlp->nlp_type & NLP_FABRIC) {
2508                                 /* Clean up the ndlp on Fabric connections */
2509                                 lpfc_drop_node(vport, ndlp);
2510                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2511                                 /* Fail outstanding IO now since device
2512                                  * is marked for PLOGI.
2513                                  */
2514                                 lpfc_unreg_rpi(vport, ndlp);
2515                         }
2516                 }
2517                 if (vport->port_state != LPFC_FLOGI) {
2518                         vport->port_state = LPFC_FLOGI;
2519                         lpfc_set_disctmo(vport);
2520                         lpfc_initial_flogi(vport);
2521                 }
2522                 break;
2523
2524         case LPFC_FDISC:
2525         case LPFC_FLOGI:
2526         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2527                 /* Initial FLOGI timeout */
2528                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2529                                  "0222 Initial %s timeout\n",
2530                                  vport->vpi ? "FLOGI" : "FDISC");
2531
2532                 /* Assume no Fabric and go on with discovery.
2533                  * Check for outstanding ELS FLOGI to abort.
2534                  */
2535
2536                 /* FLOGI failed, so just use loop map to make discovery list */
2537                 lpfc_disc_list_loopmap(vport);
2538
2539                 /* Start discovery */
2540                 lpfc_disc_start(vport);
2541                 break;
2542
2543         case LPFC_FABRIC_CFG_LINK:
2544         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2545            NameServer login */
2546                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2547                                  "0223 Timeout while waiting for "
2548                                  "NameServer login\n");
2549                 /* Next look for NameServer ndlp */
2550                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2551                 if (ndlp)
2552                         lpfc_nlp_put(ndlp);
2553                 /* Start discovery */
2554                 lpfc_disc_start(vport);
2555                 break;
2556
2557         case LPFC_NS_QRY:
2558         /* Check for wait for NameServer Rsp timeout */
2559                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2560                                  "0224 NameServer Query timeout "
2561                                  "Data: x%x x%x\n",
2562                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2563
2564                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2565                         /* Try it one more time */
2566                         vport->fc_ns_retry++;
2567                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2568                                          vport->fc_ns_retry, 0);
2569                         if (rc == 0)
2570                                 break;
2571                 }
2572                 vport->fc_ns_retry = 0;
2573
2574                 /*
2575                  * Discovery is over.
2576                  * set port_state to PORT_READY if SLI2.
2577                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2578                  */
2579                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2580                         lpfc_issue_reg_vpi(phba, vport);
2581                 else  { /* NPIV Not enabled */
2582                         lpfc_issue_clear_la(phba, vport);
2583                         vport->port_state = LPFC_VPORT_READY;
2584                 }
2585
2586                 /* Setup and issue mailbox INITIALIZE LINK command */
2587                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2588                 if (!initlinkmbox) {
2589                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2590                                          "0206 Device Discovery "
2591                                          "completion error\n");
2592                         phba->link_state = LPFC_HBA_ERROR;
2593                         break;
2594                 }
2595
2596                 lpfc_linkdown(phba);
2597                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2598                                phba->cfg_link_speed);
2599                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2600                 initlinkmbox->vport = vport;
2601                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2602                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
2603                                          (MBX_NOWAIT | MBX_STOP_IOCB));
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_dev_loss_delay(unsigned long ptr)
2810 {
2811         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2812         struct lpfc_vport *vport = ndlp->vport;
2813         struct lpfc_hba   *phba = vport->phba;
2814         struct lpfc_work_evt  *evtp = &ndlp->dev_loss_evt;
2815         unsigned long flags;
2816
2817         evtp = &ndlp->dev_loss_evt;
2818
2819         spin_lock_irqsave(&phba->hbalock, flags);
2820         if (!list_empty(&evtp->evt_listp)) {
2821                 spin_unlock_irqrestore(&phba->hbalock, flags);
2822                 return;
2823         }
2824
2825         evtp->evt_arg1  = ndlp;
2826         evtp->evt       = LPFC_EVT_DEV_LOSS_DELAY;
2827         list_add_tail(&evtp->evt_listp, &phba->work_list);
2828         if (phba->work_wait)
2829                 lpfc_worker_wake_up(phba);
2830         spin_unlock_irqrestore(&phba->hbalock, flags);
2831         return;
2832 }
2833
2834 void
2835 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2836               uint32_t did)
2837 {
2838         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2839         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2840         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2841         init_timer(&ndlp->nlp_delayfunc);
2842         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2843         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2844         ndlp->nlp_DID = did;
2845         ndlp->vport = vport;
2846         ndlp->nlp_sid = NLP_NO_SID;
2847         INIT_LIST_HEAD(&ndlp->nlp_listp);
2848         kref_init(&ndlp->kref);
2849
2850         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2851                 "node init:       did:x%x",
2852                 ndlp->nlp_DID, 0, 0);
2853
2854         return;
2855 }
2856
2857 void
2858 lpfc_nlp_release(struct kref *kref)
2859 {
2860         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2861                                                   kref);
2862
2863         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2864                 "node release:    did:x%x flg:x%x type:x%x",
2865                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2866
2867         lpfc_nlp_remove(ndlp->vport, ndlp);
2868         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2869 }
2870
2871 struct lpfc_nodelist *
2872 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2873 {
2874         if (ndlp)
2875                 kref_get(&ndlp->kref);
2876         return ndlp;
2877 }
2878
2879 int
2880 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2881 {
2882         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2883 }