git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_vport.h"
  40 #include "lpfc_debugfs.h"
  41
  42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  43 static uint8_t lpfcAlpaArray[] = {
  44         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  45         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  46         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  47         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  48         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  49         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  50         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  51         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  52         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  53         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  54         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  55         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  56         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  57 };
  58
  59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  60 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  61
  62 void
  63 lpfc_terminate_rport_io(struct fc_rport *rport)
  64 {
  65         struct lpfc_rport_data *rdata;
  66         struct lpfc_nodelist * ndlp;
  67         struct lpfc_hba *phba;
  68
  69         rdata = rport->dd_data;
  70         ndlp = rdata->pnode;
  71
  72         if (!ndlp) {
  73                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  74                         printk(KERN_ERR "Cannot find remote node"
  75                         " to terminate I/O Data x%x\n",
  76                         rport->port_id);
  77                 return;
  78         }
  79
  80         phba  = ndlp->vport->phba;
  81
  82         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  83                 "rport terminate: sid:x%x did:x%x flg:x%x",
  84                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  85
  86         if (ndlp->nlp_sid != NLP_NO_SID) {
  87                 lpfc_sli_abort_iocb(ndlp->vport,
  88                         &phba->sli.ring[phba->sli.fcp_ring],
  89                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  90         }
  91
  92         /*
  93          * A device is normally blocked for rediscovery and unblocked when
  94          * devloss timeout happens.  In case a vport is removed or driver
  95          * unloaded before devloss timeout happens, we need to unblock here.
  96          */
  97         scsi_target_unblock(&rport->dev);
  98         return;
  99 }
 100
 101 /*
 102  * This function will be called when dev_loss_tmo fire.
 103  */
 104 void
 105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 106 {
 107         struct lpfc_rport_data *rdata;
 108         struct lpfc_nodelist * ndlp;
 109         struct lpfc_vport *vport;
 110         struct lpfc_hba   *phba;
 111         struct lpfc_work_evt *evtp;
 112         int  put_node;
 113         int  put_rport;
 114
 115         rdata = rport->dd_data;
 116         ndlp = rdata->pnode;
 117         if (!ndlp)
 118                 return;
 119
 120         vport = ndlp->vport;
 121         phba  = vport->phba;
 122
 123         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 124                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 125                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 126
 127         /* Don't defer this if we are in the process of deleting the vport
 128          * or unloading the driver. The unload will cleanup the node
 129          * appropriately we just need to cleanup the ndlp rport info here.
 130          */
 131         if (vport->load_flag & FC_UNLOADING) {
 132                 put_node = rdata->pnode != NULL;
 133                 put_rport = ndlp->rport != NULL;
 134                 rdata->pnode = NULL;
 135                 ndlp->rport = NULL;
 136                 if (put_node)
 137                         lpfc_nlp_put(ndlp);
 138                 if (put_rport)
 139                         put_device(&rport->dev);
 140                 return;
 141         }
 142
 143         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 144                 return;
 145
 146         evtp = &ndlp->dev_loss_evt;
 147
 148         if (!list_empty(&evtp->evt_listp))
 149                 return;
 150
 151         spin_lock_irq(&phba->hbalock);
 152         /* We need to hold the node by incrementing the reference
 153          * count until this queued work is done
 154          */
 155         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 156         evtp->evt       = LPFC_EVT_DEV_LOSS;
 157         list_add_tail(&evtp->evt_listp, &phba->work_list);
 158         if (phba->work_wait)
 159                 wake_up(phba->work_wait);
 160
 161         spin_unlock_irq(&phba->hbalock);
 162
 163         return;
 164 }
 165
 166 /*
 167  * This function is called from the worker thread when dev_loss_tmo
 168  * expire.
 169  */
 170 static void
 171 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 172 {
 173         struct lpfc_rport_data *rdata;
 174         struct fc_rport   *rport;
 175         struct lpfc_vport *vport;
 176         struct lpfc_hba   *phba;
 177         uint8_t *name;
 178         int  put_node;
 179         int  put_rport;
 180         int warn_on = 0;
 181
 182         rport = ndlp->rport;
 183
 184         if (!rport)
 185                 return;
 186
 187         rdata = rport->dd_data;
 188         name = (uint8_t *) &ndlp->nlp_portname;
 189         vport = ndlp->vport;
 190         phba  = vport->phba;
 191
 192         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 193                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 194                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 195
 196         /* Don't defer this if we are in the process of deleting the vport
 197          * or unloading the driver. The unload will cleanup the node
 198          * appropriately we just need to cleanup the ndlp rport info here.
 199          */
 200         if (vport->load_flag & FC_UNLOADING) {
 201                 if (ndlp->nlp_sid != NLP_NO_SID) {
 202                         /* flush the target */
 203                         lpfc_sli_abort_iocb(vport,
 204                                         &phba->sli.ring[phba->sli.fcp_ring],
 205                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 206                 }
 207                 put_node = rdata->pnode != NULL;
 208                 put_rport = ndlp->rport != NULL;
 209                 rdata->pnode = NULL;
 210                 ndlp->rport = NULL;
 211                 if (put_node)
 212                         lpfc_nlp_put(ndlp);
 213                 if (put_rport)
 214                         put_device(&rport->dev);
 215                 return;
 216         }
 217
 218         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 219                 return;
 220
 221         if (ndlp->nlp_type & NLP_FABRIC) {
 222                 /* We will clean up these Nodes in linkup */
 223                 put_node = rdata->pnode != NULL;
 224                 put_rport = ndlp->rport != NULL;
 225                 rdata->pnode = NULL;
 226                 ndlp->rport = NULL;
 227                 if (put_node)
 228                         lpfc_nlp_put(ndlp);
 229                 if (put_rport)
 230                         put_device(&rport->dev);
 231                 return;
 232         }
 233
 234         if (ndlp->nlp_sid != NLP_NO_SID) {
 235                 warn_on = 1;
 236                 /* flush the target */
 237                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 238                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 239         }
 240         if (vport->load_flag & FC_UNLOADING)
 241                 warn_on = 0;
 242
 243         if (warn_on) {
 244                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 245                                  "0203 Devloss timeout on "
 246                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 247                                  "NPort x%x Data: x%x x%x x%x\n",
 248                                  *name, *(name+1), *(name+2), *(name+3),
 249                                  *(name+4), *(name+5), *(name+6), *(name+7),
 250                                  ndlp->nlp_DID, ndlp->nlp_flag,
 251                                  ndlp->nlp_state, ndlp->nlp_rpi);
 252         } else {
 253                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 254                                  "0204 Devloss timeout on "
 255                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 256                                  "NPort x%x Data: x%x x%x x%x\n",
 257                                  *name, *(name+1), *(name+2), *(name+3),
 258                                  *(name+4), *(name+5), *(name+6), *(name+7),
 259                                  ndlp->nlp_DID, ndlp->nlp_flag,
 260                                  ndlp->nlp_state, ndlp->nlp_rpi);
 261         }
 262
 263         put_node = rdata->pnode != NULL;
 264         put_rport = ndlp->rport != NULL;
 265         rdata->pnode = NULL;
 266         ndlp->rport = NULL;
 267         if (put_node)
 268                 lpfc_nlp_put(ndlp);
 269         if (put_rport)
 270                 put_device(&rport->dev);
 271
 272         if (!(vport->load_flag & FC_UNLOADING) &&
 273             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 274             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 275             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) {
 276                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 277         }
 278 }
 279
 280
 281 void
 282 lpfc_worker_wake_up(struct lpfc_hba *phba)
 283 {
 284         wake_up(phba->work_wait);
 285         return;
 286 }
 287
 288 static void
 289 lpfc_work_list_done(struct lpfc_hba *phba)
 290 {
 291         struct lpfc_work_evt  *evtp = NULL;
 292         struct lpfc_nodelist  *ndlp;
 293         int free_evt;
 294
 295         spin_lock_irq(&phba->hbalock);
 296         while (!list_empty(&phba->work_list)) {
 297                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 298                                  evt_listp);
 299                 spin_unlock_irq(&phba->hbalock);
 300                 free_evt = 1;
 301                 switch (evtp->evt) {
 302                 case LPFC_EVT_ELS_RETRY:
 303                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 304                         lpfc_els_retry_delay_handler(ndlp);
 305                         free_evt = 0; /* evt is part of ndlp */
 306                         /* decrement the node reference count held
 307                          * for this queued work
 308                          */
 309                         lpfc_nlp_put(ndlp);
 310                         break;
 311                 case LPFC_EVT_DEV_LOSS:
 312                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 313                         lpfc_dev_loss_tmo_handler(ndlp);
 314                         free_evt = 0;
 315                         /* decrement the node reference count held for
 316                          * this queued work
 317                          */
 318                         lpfc_nlp_put(ndlp);
 319                         break;
 320                 case LPFC_EVT_ONLINE:
 321                         if (phba->link_state < LPFC_LINK_DOWN)
 322                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 323                         else
 324                                 *(int *) (evtp->evt_arg1) = 0;
 325                         complete((struct completion *)(evtp->evt_arg2));
 326                         break;
 327                 case LPFC_EVT_OFFLINE_PREP:
 328                         if (phba->link_state >= LPFC_LINK_DOWN)
 329                                 lpfc_offline_prep(phba);
 330                         *(int *)(evtp->evt_arg1) = 0;
 331                         complete((struct completion *)(evtp->evt_arg2));
 332                         break;
 333                 case LPFC_EVT_OFFLINE:
 334                         lpfc_offline(phba);
 335                         lpfc_sli_brdrestart(phba);
 336                         *(int *)(evtp->evt_arg1) =
 337                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 338                         lpfc_unblock_mgmt_io(phba);
 339                         complete((struct completion *)(evtp->evt_arg2));
 340                         break;
 341                 case LPFC_EVT_WARM_START:
 342                         lpfc_offline(phba);
 343                         lpfc_reset_barrier(phba);
 344                         lpfc_sli_brdreset(phba);
 345                         lpfc_hba_down_post(phba);
 346                         *(int *)(evtp->evt_arg1) =
 347                                 lpfc_sli_brdready(phba, HS_MBRDY);
 348                         lpfc_unblock_mgmt_io(phba);
 349                         complete((struct completion *)(evtp->evt_arg2));
 350                         break;
 351                 case LPFC_EVT_KILL:
 352                         lpfc_offline(phba);
 353                         *(int *)(evtp->evt_arg1)
 354                                 = (phba->pport->stopped)
 355                                         ? 0 : lpfc_sli_brdkill(phba);
 356                         lpfc_unblock_mgmt_io(phba);
 357                         complete((struct completion *)(evtp->evt_arg2));
 358                         break;
 359                 }
 360                 if (free_evt)
 361                         kfree(evtp);
 362                 spin_lock_irq(&phba->hbalock);
 363         }
 364         spin_unlock_irq(&phba->hbalock);
 365
 366 }
 367
 368 static void
 369 lpfc_work_done(struct lpfc_hba *phba)
 370 {
 371         struct lpfc_sli_ring *pring;
 372         uint32_t ha_copy, status, control, work_port_events;
 373         struct lpfc_vport **vports;
 374         struct lpfc_vport *vport;
 375         int i;
 376
 377         spin_lock_irq(&phba->hbalock);
 378         ha_copy = phba->work_ha;
 379         phba->work_ha = 0;
 380         spin_unlock_irq(&phba->hbalock);
 381
 382         if (ha_copy & HA_ERATT)
 383                 lpfc_handle_eratt(phba);
 384
 385         if (ha_copy & HA_MBATT)
 386                 lpfc_sli_handle_mb_event(phba);
 387
 388         if (ha_copy & HA_LATT)
 389                 lpfc_handle_latt(phba);
 390         vports = lpfc_create_vport_work_array(phba);
 391         if (vports != NULL)
 392                 for(i = 0; i <= phba->max_vpi; i++) {
 393                         /*
 394                          * We could have no vports in array if unloading, so if
 395                          * this happens then just use the pport
 396                          */
 397                         if (vports[i] == NULL && i == 0)
 398                                 vport = phba->pport;
 399                         else
 400                                 vport = vports[i];
 401                         if (vport == NULL)
 402                                 break;
 403                         work_port_events = vport->work_port_events;
 404                         if (work_port_events & WORKER_DISC_TMO)
 405                                 lpfc_disc_timeout_handler(vport);
 406                         if (work_port_events & WORKER_ELS_TMO)
 407                                 lpfc_els_timeout_handler(vport);
 408                         if (work_port_events & WORKER_HB_TMO)
 409                                 lpfc_hb_timeout_handler(phba);
 410                         if (work_port_events & WORKER_MBOX_TMO)
 411                                 lpfc_mbox_timeout_handler(phba);
 412                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 413                                 lpfc_unblock_fabric_iocbs(phba);
 414                         if (work_port_events & WORKER_FDMI_TMO)
 415                                 lpfc_fdmi_timeout_handler(vport);
 416                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 417                                 lpfc_ramp_down_queue_handler(phba);
 418                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 419                                 lpfc_ramp_up_queue_handler(phba);
 420                         spin_lock_irq(&vport->work_port_lock);
 421                         vport->work_port_events &= ~work_port_events;
 422                         spin_unlock_irq(&vport->work_port_lock);
 423                 }
 424         lpfc_destroy_vport_work_array(phba, vports);
 425
 426         pring = &phba->sli.ring[LPFC_ELS_RING];
 427         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 428         status >>= (4*LPFC_ELS_RING);
 429         if ((status & HA_RXMASK)
 430                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 431                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 432                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 433                 } else {
 434                         lpfc_sli_handle_slow_ring_event(phba, pring,
 435                                                         (status &
 436                                                          HA_RXMASK));
 437                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 438                 }
 439                 /*
 440                  * Turn on Ring interrupts
 441                  */
 442                 spin_lock_irq(&phba->hbalock);
 443                 control = readl(phba->HCregaddr);
 444                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 445                         lpfc_debugfs_slow_ring_trc(phba,
 446                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 447                                 control, ha_copy, 0);
 448
 449                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 450                         writel(control, phba->HCregaddr);
 451                         readl(phba->HCregaddr); /* flush */
 452                 }
 453                 else {
 454                         lpfc_debugfs_slow_ring_trc(phba,
 455                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 456                                 control, ha_copy, 0);
 457                 }
 458                 spin_unlock_irq(&phba->hbalock);
 459         }
 460         lpfc_work_list_done(phba);
 461 }
 462
 463 static int
 464 check_work_wait_done(struct lpfc_hba *phba)
 465 {
 466         struct lpfc_vport *vport;
 467         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 468         int rc = 0;
 469
 470         spin_lock_irq(&phba->hbalock);
 471         list_for_each_entry(vport, &phba->port_list, listentry) {
 472                 if (vport->work_port_events) {
 473                         rc = 1;
 474                         break;
 475                 }
 476         }
 477         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 478             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 479                 rc = 1;
 480                 phba->work_found++;
 481         } else
 482                 phba->work_found = 0;
 483         spin_unlock_irq(&phba->hbalock);
 484         return rc;
 485 }
 486
 487
 488 int
 489 lpfc_do_work(void *p)
 490 {
 491         struct lpfc_hba *phba = p;
 492         int rc;
 493         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 494
 495         set_user_nice(current, -20);
 496         phba->work_wait = &work_waitq;
 497         phba->work_found = 0;
 498
 499         while (1) {
 500
 501                 rc = wait_event_interruptible(work_waitq,
 502                                               check_work_wait_done(phba));
 503
 504                 BUG_ON(rc);
 505
 506                 if (kthread_should_stop())
 507                         break;
 508
 509                 lpfc_work_done(phba);
 510
 511                 /* If there is alot of slow ring work, like during link up
 512                  * check_work_wait_done() may cause this thread to not give
 513                  * up the CPU for very long periods of time. This may cause
 514                  * soft lockups or other problems. To avoid these situations
 515                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 516                  * consecutive iterations.
 517                  */
 518                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 519                         phba->work_found = 0;
 520                         schedule();
 521                 }
 522         }
 523         phba->work_wait = NULL;
 524         return 0;
 525 }
 526
 527 /*
 528  * This is only called to handle FC worker events. Since this a rare
 529  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 530  * embedding it in the IOCB.
 531  */
 532 int
 533 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 534                       uint32_t evt)
 535 {
 536         struct lpfc_work_evt  *evtp;
 537         unsigned long flags;
 538
 539         /*
 540          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 541          * be queued to worker thread for processing
 542          */
 543         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 544         if (!evtp)
 545                 return 0;
 546
 547         evtp->evt_arg1  = arg1;
 548         evtp->evt_arg2  = arg2;
 549         evtp->evt       = evt;
 550
 551         spin_lock_irqsave(&phba->hbalock, flags);
 552         list_add_tail(&evtp->evt_listp, &phba->work_list);
 553         if (phba->work_wait)
 554                 lpfc_worker_wake_up(phba);
 555         spin_unlock_irqrestore(&phba->hbalock, flags);
 556
 557         return 1;
 558 }
 559
 560 void
 561 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 562 {
 563         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 564         struct lpfc_hba  *phba = vport->phba;
 565         struct lpfc_nodelist *ndlp, *next_ndlp;
 566         int  rc;
 567
 568         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 569                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 570                         continue;
 571
 572                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 573                         ((vport->port_type == LPFC_NPIV_PORT) &&
 574                         (ndlp->nlp_DID == NameServer_DID)))
 575                         lpfc_unreg_rpi(vport, ndlp);
 576
 577                 /* Leave Fabric nodes alone on link down */
 578                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 579                         continue;
 580                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 581                                              remove
 582                                              ? NLP_EVT_DEVICE_RM
 583                                              : NLP_EVT_DEVICE_RECOVERY);
 584         }
 585         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 586                 lpfc_mbx_unreg_vpi(vport);
 587                 spin_lock_irq(shost->host_lock);
 588                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 589                 spin_unlock_irq(shost->host_lock);
 590         }
 591 }
 592
 593 void
 594 lpfc_port_link_failure(struct lpfc_vport *vport)
 595 {
 596         /* Cleanup any outstanding RSCN activity */
 597         lpfc_els_flush_rscn(vport);
 598
 599         /* Cleanup any outstanding ELS commands */
 600         lpfc_els_flush_cmd(vport);
 601
 602         lpfc_cleanup_rpis(vport, 0);
 603
 604         /* Turn off discovery timer if its running */
 605         lpfc_can_disctmo(vport);
 606 }
 607
 608 static void
 609 lpfc_linkdown_port(struct lpfc_vport *vport)
 610 {
 611         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 612
 613         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 614
 615         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 616                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 617                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 618
 619         lpfc_port_link_failure(vport);
 620
 621 }
 622
 623 int
 624 lpfc_linkdown(struct lpfc_hba *phba)
 625 {
 626         struct lpfc_vport *vport = phba->pport;
 627         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 628         struct lpfc_vport **vports;
 629         LPFC_MBOXQ_t          *mb;
 630         int i;
 631
 632         if (phba->link_state == LPFC_LINK_DOWN) {
 633                 return 0;
 634         }
 635         spin_lock_irq(&phba->hbalock);
 636         if (phba->link_state > LPFC_LINK_DOWN) {
 637                 phba->link_state = LPFC_LINK_DOWN;
 638                 phba->pport->fc_flag &= ~FC_LBIT;
 639         }
 640         spin_unlock_irq(&phba->hbalock);
 641         vports = lpfc_create_vport_work_array(phba);
 642         if (vports != NULL)
 643                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
 644                         /* Issue a LINK DOWN event to all nodes */
 645                         lpfc_linkdown_port(vports[i]);
 646                 }
 647         lpfc_destroy_vport_work_array(phba, vports);
 648         /* Clean up any firmware default rpi's */
 649         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 650         if (mb) {
 651                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 652                 mb->vport = vport;
 653                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 654                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 655                     == MBX_NOT_FINISHED) {
 656                         mempool_free(mb, phba->mbox_mem_pool);
 657                 }
 658         }
 659
 660         /* Setup myDID for link up if we are in pt2pt mode */
 661         if (phba->pport->fc_flag & FC_PT2PT) {
 662                 phba->pport->fc_myDID = 0;
 663                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 664                 if (mb) {
 665                         lpfc_config_link(phba, mb);
 666                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 667                         mb->vport = vport;
 668                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 669                             == MBX_NOT_FINISHED) {
 670                                 mempool_free(mb, phba->mbox_mem_pool);
 671                         }
 672                 }
 673                 spin_lock_irq(shost->host_lock);
 674                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 675                 spin_unlock_irq(shost->host_lock);
 676         }
 677
 678         return 0;
 679 }
 680
 681 static void
 682 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 683 {
 684         struct lpfc_nodelist *ndlp;
 685
 686         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 687                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 688                         continue;
 689
 690                 if (ndlp->nlp_type & NLP_FABRIC) {
 691                                 /* On Linkup its safe to clean up the ndlp
 692                                  * from Fabric connections.
 693                                  */
 694                         if (ndlp->nlp_DID != Fabric_DID)
 695                                 lpfc_unreg_rpi(vport, ndlp);
 696                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 697                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 698                                 /* Fail outstanding IO now since device is
 699                                  * marked for PLOGI.
 700                                  */
 701                         lpfc_unreg_rpi(vport, ndlp);
 702                 }
 703         }
 704 }
 705
 706 static void
 707 lpfc_linkup_port(struct lpfc_vport *vport)
 708 {
 709         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 710         struct lpfc_hba  *phba = vport->phba;
 711
 712         if ((vport->load_flag & FC_UNLOADING) != 0)
 713                 return;
 714
 715         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 716                 "Link Up:         top:x%x speed:x%x flg:x%x",
 717                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 718
 719         /* If NPIV is not enabled, only bring the physical port up */
 720         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 721                 (vport != phba->pport))
 722                 return;
 723
 724         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 725
 726         spin_lock_irq(shost->host_lock);
 727         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 728                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 729         vport->fc_flag |= FC_NDISC_ACTIVE;
 730         vport->fc_ns_retry = 0;
 731         spin_unlock_irq(shost->host_lock);
 732
 733         if (vport->fc_flag & FC_LBIT)
 734                 lpfc_linkup_cleanup_nodes(vport);
 735
 736 }
 737
 738 static int
 739 lpfc_linkup(struct lpfc_hba *phba)
 740 {
 741         struct lpfc_vport **vports;
 742         int i;
 743
 744         phba->link_state = LPFC_LINK_UP;
 745
 746         /* Unblock fabric iocbs if they are blocked */
 747         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 748         del_timer_sync(&phba->fabric_block_timer);
 749
 750         vports = lpfc_create_vport_work_array(phba);
 751         if (vports != NULL)
 752                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
 753                         lpfc_linkup_port(vports[i]);
 754         lpfc_destroy_vport_work_array(phba, vports);
 755         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 756                 lpfc_issue_clear_la(phba, phba->pport);
 757
 758         return 0;
 759 }
 760
 761 /*
 762  * This routine handles processing a CLEAR_LA mailbox
 763  * command upon completion. It is setup in the LPFC_MBOXQ
 764  * as the completion routine when the command is
 765  * handed off to the SLI layer.
 766  */
 767 static void
 768 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 769 {
 770         struct lpfc_vport *vport = pmb->vport;
 771         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 772         struct lpfc_sli   *psli = &phba->sli;
 773         MAILBOX_t *mb = &pmb->mb;
 774         uint32_t control;
 775
 776         /* Since we don't do discovery right now, turn these off here */
 777         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 778         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 779         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 780
 781         /* Check for error */
 782         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 783                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 784                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 785                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 786                                  "state x%x\n",
 787                                  mb->mbxStatus, vport->port_state);
 788                 phba->link_state = LPFC_HBA_ERROR;
 789                 goto out;
 790         }
 791
 792         if (vport->port_type == LPFC_PHYSICAL_PORT)
 793                 phba->link_state = LPFC_HBA_READY;
 794
 795         spin_lock_irq(&phba->hbalock);
 796         psli->sli_flag |= LPFC_PROCESS_LA;
 797         control = readl(phba->HCregaddr);
 798         control |= HC_LAINT_ENA;
 799         writel(control, phba->HCregaddr);
 800         readl(phba->HCregaddr); /* flush */
 801         spin_unlock_irq(&phba->hbalock);
 802         return;
 803
 804         vport->num_disc_nodes = 0;
 805         /* go thru NPR nodes and issue ELS PLOGIs */
 806         if (vport->fc_npr_cnt)
 807                 lpfc_els_disc_plogi(vport);
 808
 809         if (!vport->num_disc_nodes) {
 810                 spin_lock_irq(shost->host_lock);
 811                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 812                 spin_unlock_irq(shost->host_lock);
 813         }
 814
 815         vport->port_state = LPFC_VPORT_READY;
 816
 817 out:
 818         /* Device Discovery completes */
 819         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 820                          "0225 Device Discovery completes\n");
 821         mempool_free(pmb, phba->mbox_mem_pool);
 822
 823         spin_lock_irq(shost->host_lock);
 824         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 825         spin_unlock_irq(shost->host_lock);
 826
 827         del_timer_sync(&phba->fc_estabtmo);
 828
 829         lpfc_can_disctmo(vport);
 830
 831         /* turn on Link Attention interrupts */
 832
 833         spin_lock_irq(&phba->hbalock);
 834         psli->sli_flag |= LPFC_PROCESS_LA;
 835         control = readl(phba->HCregaddr);
 836         control |= HC_LAINT_ENA;
 837         writel(control, phba->HCregaddr);
 838         readl(phba->HCregaddr); /* flush */
 839         spin_unlock_irq(&phba->hbalock);
 840
 841         return;
 842 }
 843
 844
 845 static void
 846 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 847 {
 848         struct lpfc_vport *vport = pmb->vport;
 849
 850         if (pmb->mb.mbxStatus)
 851                 goto out;
 852
 853         mempool_free(pmb, phba->mbox_mem_pool);
 854
 855         if (phba->fc_topology == TOPOLOGY_LOOP &&
 856             vport->fc_flag & FC_PUBLIC_LOOP &&
 857             !(vport->fc_flag & FC_LBIT)) {
 858                         /* Need to wait for FAN - use discovery timer
 859                          * for timeout.  port_state is identically
 860                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 861                          */
 862                         lpfc_set_disctmo(vport);
 863                         return;
 864         }
 865
 866         /* Start discovery by sending a FLOGI. port_state is identically
 867          * LPFC_FLOGI while waiting for FLOGI cmpl
 868          */
 869         if (vport->port_state != LPFC_FLOGI) {
 870                 lpfc_initial_flogi(vport);
 871         }
 872         return;
 873
 874 out:
 875         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 876                          "0306 CONFIG_LINK mbxStatus error x%x "
 877                          "HBA state x%x\n",
 878                          pmb->mb.mbxStatus, vport->port_state);
 879         mempool_free(pmb, phba->mbox_mem_pool);
 880
 881         lpfc_linkdown(phba);
 882
 883         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 884                          "0200 CONFIG_LINK bad hba state x%x\n",
 885                          vport->port_state);
 886
 887         lpfc_issue_clear_la(phba, vport);
 888         return;
 889 }
 890
 891 static void
 892 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 893 {
 894         MAILBOX_t *mb = &pmb->mb;
 895         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 896         struct lpfc_vport  *vport = pmb->vport;
 897
 898
 899         /* Check for error */
 900         if (mb->mbxStatus) {
 901                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 902                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 903                                  "0319 READ_SPARAM mbxStatus error x%x "
 904                                  "hba state x%x>\n",
 905                                  mb->mbxStatus, vport->port_state);
 906                 lpfc_linkdown(phba);
 907                 goto out;
 908         }
 909
 910         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 911                sizeof (struct serv_parm));
 912         if (phba->cfg_soft_wwnn)
 913                 u64_to_wwn(phba->cfg_soft_wwnn,
 914                            vport->fc_sparam.nodeName.u.wwn);
 915         if (phba->cfg_soft_wwpn)
 916                 u64_to_wwn(phba->cfg_soft_wwpn,
 917                            vport->fc_sparam.portName.u.wwn);
 918         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 919                sizeof(vport->fc_nodename));
 920         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 921                sizeof(vport->fc_portname));
 922         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 923                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 924                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 925         }
 926
 927         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 928         kfree(mp);
 929         mempool_free(pmb, phba->mbox_mem_pool);
 930         return;
 931
 932 out:
 933         pmb->context1 = NULL;
 934         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 935         kfree(mp);
 936         lpfc_issue_clear_la(phba, vport);
 937         mempool_free(pmb, phba->mbox_mem_pool);
 938         return;
 939 }
 940
 941 static void
 942 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 943 {
 944         struct lpfc_vport *vport = phba->pport;
 945         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 946         int i;
 947         struct lpfc_dmabuf *mp;
 948         int rc;
 949
 950         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 951         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 952
 953         spin_lock_irq(&phba->hbalock);
 954         switch (la->UlnkSpeed) {
 955         case LA_1GHZ_LINK:
 956                 phba->fc_linkspeed = LA_1GHZ_LINK;
 957                 break;
 958         case LA_2GHZ_LINK:
 959                 phba->fc_linkspeed = LA_2GHZ_LINK;
 960                 break;
 961         case LA_4GHZ_LINK:
 962                 phba->fc_linkspeed = LA_4GHZ_LINK;
 963                 break;
 964         case LA_8GHZ_LINK:
 965                 phba->fc_linkspeed = LA_8GHZ_LINK;
 966                 break;
 967         default:
 968                 phba->fc_linkspeed = LA_UNKNW_LINK;
 969                 break;
 970         }
 971
 972         phba->fc_topology = la->topology;
 973         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 974
 975         if (phba->fc_topology == TOPOLOGY_LOOP) {
 976                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 977
 978                                 /* Get Loop Map information */
 979                 if (la->il)
 980                         vport->fc_flag |= FC_LBIT;
 981
 982                 vport->fc_myDID = la->granted_AL_PA;
 983                 i = la->un.lilpBde64.tus.f.bdeSize;
 984
 985                 if (i == 0) {
 986                         phba->alpa_map[0] = 0;
 987                 } else {
 988                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 989                                 int numalpa, j, k;
 990                                 union {
 991                                         uint8_t pamap[16];
 992                                         struct {
 993                                                 uint32_t wd1;
 994                                                 uint32_t wd2;
 995                                                 uint32_t wd3;
 996                                                 uint32_t wd4;
 997                                         } pa;
 998                                 } un;
 999                                 numalpa = phba->alpa_map[0];
1000                                 j = 0;
1001                                 while (j < numalpa) {
1002                                         memset(un.pamap, 0, 16);
1003                                         for (k = 1; j < numalpa; k++) {
1004                                                 un.pamap[k - 1] =
1005                                                         phba->alpa_map[j + 1];
1006                                                 j++;
1007                                                 if (k == 16)
1008                                                         break;
1009                                         }
1010                                         /* Link Up Event ALPA map */
1011                                         lpfc_printf_log(phba,
1012                                                         KERN_WARNING,
1013                                                         LOG_LINK_EVENT,
1014                                                         "1304 Link Up Event "
1015                                                         "ALPA map Data: x%x "
1016                                                         "x%x x%x x%x\n",
1017                                                         un.pa.wd1, un.pa.wd2,
1018                                                         un.pa.wd3, un.pa.wd4);
1019                                 }
1020                         }
1021                 }
1022         } else {
1023                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1024                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1025                            (phba->sli_rev == 3))
1026                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1027                 }
1028                 vport->fc_myDID = phba->fc_pref_DID;
1029                 vport->fc_flag |= FC_LBIT;
1030         }
1031         spin_unlock_irq(&phba->hbalock);
1032
1033         lpfc_linkup(phba);
1034         if (sparam_mbox) {
1035                 lpfc_read_sparam(phba, sparam_mbox, 0);
1036                 sparam_mbox->vport = vport;
1037                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1038                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1039                 if (rc == MBX_NOT_FINISHED) {
1040                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1041                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1042                         kfree(mp);
1043                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1044                         if (cfglink_mbox)
1045                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1046                         goto out;
1047                 }
1048         }
1049
1050         if (cfglink_mbox) {
1051                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1052                 lpfc_config_link(phba, cfglink_mbox);
1053                 cfglink_mbox->vport = vport;
1054                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1055                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1056                 if (rc != MBX_NOT_FINISHED)
1057                         return;
1058                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1059         }
1060 out:
1061         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1062         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1063                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1064                          vport->port_state, sparam_mbox, cfglink_mbox);
1065         lpfc_issue_clear_la(phba, vport);
1066         return;
1067 }
1068
1069 static void
1070 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1071 {
1072         uint32_t control;
1073         struct lpfc_sli *psli = &phba->sli;
1074
1075         lpfc_linkdown(phba);
1076
1077         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1078         spin_lock_irq(&phba->hbalock);
1079         psli->sli_flag |= LPFC_PROCESS_LA;
1080         control = readl(phba->HCregaddr);
1081         control |= HC_LAINT_ENA;
1082         writel(control, phba->HCregaddr);
1083         readl(phba->HCregaddr); /* flush */
1084         spin_unlock_irq(&phba->hbalock);
1085 }
1086
1087 /*
1088  * This routine handles processing a READ_LA mailbox
1089  * command upon completion. It is setup in the LPFC_MBOXQ
1090  * as the completion routine when the command is
1091  * handed off to the SLI layer.
1092  */
1093 void
1094 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1095 {
1096         struct lpfc_vport *vport = pmb->vport;
1097         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1098         READ_LA_VAR *la;
1099         MAILBOX_t *mb = &pmb->mb;
1100         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1101
1102         /* Check for error */
1103         if (mb->mbxStatus) {
1104                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1105                                 "1307 READ_LA mbox error x%x state x%x\n",
1106                                 mb->mbxStatus, vport->port_state);
1107                 lpfc_mbx_issue_link_down(phba);
1108                 phba->link_state = LPFC_HBA_ERROR;
1109                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1110         }
1111
1112         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1113
1114         memcpy(&phba->alpa_map[0], mp->virt, 128);
1115
1116         spin_lock_irq(shost->host_lock);
1117         if (la->pb)
1118                 vport->fc_flag |= FC_BYPASSED_MODE;
1119         else
1120                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1121         spin_unlock_irq(shost->host_lock);
1122
1123         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1124             (phba->fc_eventTag == la->eventTag)) {
1125                 phba->fc_stat.LinkMultiEvent++;
1126                 if (la->attType == AT_LINK_UP)
1127                         if (phba->fc_eventTag != 0)
1128                                 lpfc_linkdown(phba);
1129         }
1130
1131         phba->fc_eventTag = la->eventTag;
1132
1133         if (la->attType == AT_LINK_UP) {
1134                 phba->fc_stat.LinkUp++;
1135                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1136                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1137                                         "1306 Link Up Event in loop back mode "
1138                                         "x%x received Data: x%x x%x x%x x%x\n",
1139                                         la->eventTag, phba->fc_eventTag,
1140                                         la->granted_AL_PA, la->UlnkSpeed,
1141                                         phba->alpa_map[0]);
1142                 } else {
1143                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1144                                         "1303 Link Up Event x%x received "
1145                                         "Data: x%x x%x x%x x%x\n",
1146                                         la->eventTag, phba->fc_eventTag,
1147                                         la->granted_AL_PA, la->UlnkSpeed,
1148                                         phba->alpa_map[0]);
1149                 }
1150                 lpfc_mbx_process_link_up(phba, la);
1151         } else {
1152                 phba->fc_stat.LinkDown++;
1153                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1154                                 "1305 Link Down Event x%x received "
1155                                 "Data: x%x x%x x%x\n",
1156                                 la->eventTag, phba->fc_eventTag,
1157                                 phba->pport->port_state, vport->fc_flag);
1158                 lpfc_mbx_issue_link_down(phba);
1159         }
1160
1161 lpfc_mbx_cmpl_read_la_free_mbuf:
1162         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1163         kfree(mp);
1164         mempool_free(pmb, phba->mbox_mem_pool);
1165         return;
1166 }
1167
1168 /*
1169  * This routine handles processing a REG_LOGIN mailbox
1170  * command upon completion. It is setup in the LPFC_MBOXQ
1171  * as the completion routine when the command is
1172  * handed off to the SLI layer.
1173  */
1174 void
1175 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1176 {
1177         struct lpfc_vport  *vport = pmb->vport;
1178         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1179         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1180
1181         pmb->context1 = NULL;
1182
1183         /* Good status, call state machine */
1184         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1185         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1186         kfree(mp);
1187         mempool_free(pmb, phba->mbox_mem_pool);
1188         /* decrement the node reference count held for this callback
1189          * function.
1190          */
1191         lpfc_nlp_put(ndlp);
1192
1193         return;
1194 }
1195
1196 static void
1197 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1198 {
1199         MAILBOX_t *mb = &pmb->mb;
1200         struct lpfc_vport *vport = pmb->vport;
1201         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1202
1203         switch (mb->mbxStatus) {
1204         case 0x0011:
1205         case 0x0020:
1206         case 0x9700:
1207                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1208                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1209                                  mb->mbxStatus);
1210                 break;
1211         }
1212         vport->unreg_vpi_cmpl = VPORT_OK;
1213         mempool_free(pmb, phba->mbox_mem_pool);
1214         /*
1215          * This shost reference might have been taken at the beginning of
1216          * lpfc_vport_delete()
1217          */
1218         if (vport->load_flag & FC_UNLOADING)
1219                 scsi_host_put(shost);
1220 }
1221
1222 void
1223 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1224 {
1225         struct lpfc_hba  *phba = vport->phba;
1226         LPFC_MBOXQ_t *mbox;
1227         int rc;
1228
1229         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1230         if (!mbox)
1231                 return;
1232
1233         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1234         mbox->vport = vport;
1235         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1236         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1237         if (rc == MBX_NOT_FINISHED) {
1238                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1239                                  "1800 Could not issue unreg_vpi\n");
1240                 mempool_free(mbox, phba->mbox_mem_pool);
1241                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1242         }
1243 }
1244
1245 static void
1246 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1247 {
1248         struct lpfc_vport *vport = pmb->vport;
1249         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1250         MAILBOX_t *mb = &pmb->mb;
1251
1252         switch (mb->mbxStatus) {
1253         case 0x0011:
1254         case 0x9601:
1255         case 0x9602:
1256                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1257                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1258                                  mb->mbxStatus);
1259                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1260                 spin_lock_irq(shost->host_lock);
1261                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1262                 spin_unlock_irq(shost->host_lock);
1263                 vport->fc_myDID = 0;
1264                 goto out;
1265         }
1266
1267         vport->num_disc_nodes = 0;
1268         /* go thru NPR list and issue ELS PLOGIs */
1269         if (vport->fc_npr_cnt)
1270                 lpfc_els_disc_plogi(vport);
1271
1272         if (!vport->num_disc_nodes) {
1273                 spin_lock_irq(shost->host_lock);
1274                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1275                 spin_unlock_irq(shost->host_lock);
1276                 lpfc_can_disctmo(vport);
1277         }
1278         vport->port_state = LPFC_VPORT_READY;
1279
1280 out:
1281         mempool_free(pmb, phba->mbox_mem_pool);
1282         return;
1283 }
1284
1285 /*
1286  * This routine handles processing a Fabric REG_LOGIN mailbox
1287  * command upon completion. It is setup in the LPFC_MBOXQ
1288  * as the completion routine when the command is
1289  * handed off to the SLI layer.
1290  */
1291 void
1292 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1293 {
1294         struct lpfc_vport *vport = pmb->vport;
1295         MAILBOX_t *mb = &pmb->mb;
1296         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1297         struct lpfc_nodelist *ndlp;
1298         struct lpfc_vport **vports;
1299         int i;
1300
1301         ndlp = (struct lpfc_nodelist *) pmb->context2;
1302         pmb->context1 = NULL;
1303         pmb->context2 = NULL;
1304         if (mb->mbxStatus) {
1305                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1306                 kfree(mp);
1307                 mempool_free(pmb, phba->mbox_mem_pool);
1308                 lpfc_nlp_put(ndlp);
1309
1310                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1311                         /* FLOGI failed, use loop map to make discovery list */
1312                         lpfc_disc_list_loopmap(vport);
1313
1314                         /* Start discovery */
1315                         lpfc_disc_start(vport);
1316                         return;
1317                 }
1318
1319                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1320                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1321                                  "0258 Register Fabric login error: 0x%x\n",
1322                                  mb->mbxStatus);
1323                 return;
1324         }
1325
1326         ndlp->nlp_rpi = mb->un.varWords[0];
1327         ndlp->nlp_type |= NLP_FABRIC;
1328         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1329
1330         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1331
1332         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1333                 vports = lpfc_create_vport_work_array(phba);
1334                 if (vports != NULL)
1335                         for(i = 0;
1336                             i <= phba->max_vpi && vports[i] != NULL;
1337                             i++) {
1338                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1339                                         continue;
1340                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1341                                         lpfc_initial_fdisc(vports[i]);
1342                                 else if (phba->sli3_options &
1343                                                 LPFC_SLI3_NPIV_ENABLED) {
1344                                         lpfc_vport_set_state(vports[i],
1345                                                 FC_VPORT_NO_FABRIC_SUPP);
1346                                         lpfc_printf_vlog(vport, KERN_ERR,
1347                                                          LOG_ELS,
1348                                                         "0259 No NPIV "
1349                                                         "Fabric support\n");
1350                                 }
1351                         }
1352                 lpfc_destroy_vport_work_array(phba, vports);
1353                 lpfc_do_scr_ns_plogi(phba, vport);
1354         }
1355
1356         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1357         kfree(mp);
1358         mempool_free(pmb, phba->mbox_mem_pool);
1359         return;
1360 }
1361
1362 /*
1363  * This routine handles processing a NameServer REG_LOGIN mailbox
1364  * command upon completion. It is setup in the LPFC_MBOXQ
1365  * as the completion routine when the command is
1366  * handed off to the SLI layer.
1367  */
1368 void
1369 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1370 {
1371         MAILBOX_t *mb = &pmb->mb;
1372         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1373         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1374         struct lpfc_vport *vport = pmb->vport;
1375
1376         if (mb->mbxStatus) {
1377 out:
1378                 /* decrement the node reference count held for this
1379                  * callback function.
1380                  */
1381                 lpfc_nlp_put(ndlp);
1382                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1383                 kfree(mp);
1384                 mempool_free(pmb, phba->mbox_mem_pool);
1385
1386                 /* If no other thread is using the ndlp, free it */
1387                 lpfc_nlp_not_used(ndlp);
1388
1389                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1390                         /*
1391                          * RegLogin failed, use loop map to make discovery
1392                          * list
1393                          */
1394                         lpfc_disc_list_loopmap(vport);
1395
1396                         /* Start discovery */
1397                         lpfc_disc_start(vport);
1398                         return;
1399                 }
1400                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1401                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1402                                  "0260 Register NameServer error: 0x%x\n",
1403                                  mb->mbxStatus);
1404                 return;
1405         }
1406
1407         pmb->context1 = NULL;
1408
1409         ndlp->nlp_rpi = mb->un.varWords[0];
1410         ndlp->nlp_type |= NLP_FABRIC;
1411         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1412
1413         if (vport->port_state < LPFC_VPORT_READY) {
1414                 /* Link up discovery requires Fabric registration. */
1415                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1416                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1417                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1418                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1419                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1420
1421                 /* Issue SCR just before NameServer GID_FT Query */
1422                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1423         }
1424
1425         vport->fc_ns_retry = 0;
1426         /* Good status, issue CT Request to NameServer */
1427         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1428                 /* Cannot issue NameServer Query, so finish up discovery */
1429                 goto out;
1430         }
1431
1432         /* decrement the node reference count held for this
1433          * callback function.
1434          */
1435         lpfc_nlp_put(ndlp);
1436         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1437         kfree(mp);
1438         mempool_free(pmb, phba->mbox_mem_pool);
1439
1440         return;
1441 }
1442
1443 static void
1444 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1445 {
1446         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1447         struct fc_rport  *rport;
1448         struct lpfc_rport_data *rdata;
1449         struct fc_rport_identifiers rport_ids;
1450         struct lpfc_hba  *phba = vport->phba;
1451
1452         /* Remote port has reappeared. Re-register w/ FC transport */
1453         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1454         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1455         rport_ids.port_id = ndlp->nlp_DID;
1456         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1457
1458         /*
1459          * We leave our node pointer in rport->dd_data when we unregister a
1460          * FCP target port.  But fc_remote_port_add zeros the space to which
1461          * rport->dd_data points.  So, if we're reusing a previously
1462          * registered port, drop the reference that we took the last time we
1463          * registered the port.
1464          */
1465         if (ndlp->rport && ndlp->rport->dd_data &&
1466             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1467                 lpfc_nlp_put(ndlp);
1468         }
1469
1470         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1471                 "rport add:       did:x%x flg:x%x type x%x",
1472                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1473
1474         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1475         if (!rport || !get_device(&rport->dev)) {
1476                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1477                            "Warning: fc_remote_port_add failed\n");
1478                 return;
1479         }
1480
1481         /* initialize static port data */
1482         rport->maxframe_size = ndlp->nlp_maxframe;
1483         rport->supported_classes = ndlp->nlp_class_sup;
1484         rdata = rport->dd_data;
1485         rdata->pnode = lpfc_nlp_get(ndlp);
1486
1487         if (ndlp->nlp_type & NLP_FCP_TARGET)
1488                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1489         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1490                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1491
1492
1493         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1494                 fc_remote_port_rolechg(rport, rport_ids.roles);
1495
1496         if ((rport->scsi_target_id != -1) &&
1497             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1498                 ndlp->nlp_sid = rport->scsi_target_id;
1499         }
1500         return;
1501 }
1502
1503 static void
1504 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1505 {
1506         struct fc_rport *rport = ndlp->rport;
1507
1508         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1509                 "rport delete:    did:x%x flg:x%x type x%x",
1510                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1511
1512         fc_remote_port_delete(rport);
1513
1514         return;
1515 }
1516
1517 static void
1518 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1519 {
1520         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1521
1522         spin_lock_irq(shost->host_lock);
1523         switch (state) {
1524         case NLP_STE_UNUSED_NODE:
1525                 vport->fc_unused_cnt += count;
1526                 break;
1527         case NLP_STE_PLOGI_ISSUE:
1528                 vport->fc_plogi_cnt += count;
1529                 break;
1530         case NLP_STE_ADISC_ISSUE:
1531                 vport->fc_adisc_cnt += count;
1532                 break;
1533         case NLP_STE_REG_LOGIN_ISSUE:
1534                 vport->fc_reglogin_cnt += count;
1535                 break;
1536         case NLP_STE_PRLI_ISSUE:
1537                 vport->fc_prli_cnt += count;
1538                 break;
1539         case NLP_STE_UNMAPPED_NODE:
1540                 vport->fc_unmap_cnt += count;
1541                 break;
1542         case NLP_STE_MAPPED_NODE:
1543                 vport->fc_map_cnt += count;
1544                 break;
1545         case NLP_STE_NPR_NODE:
1546                 vport->fc_npr_cnt += count;
1547                 break;
1548         }
1549         spin_unlock_irq(shost->host_lock);
1550 }
1551
1552 static void
1553 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1554                        int old_state, int new_state)
1555 {
1556         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1557
1558         if (new_state == NLP_STE_UNMAPPED_NODE) {
1559                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1560                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1561                 ndlp->nlp_type |= NLP_FC_NODE;
1562         }
1563         if (new_state == NLP_STE_MAPPED_NODE)
1564                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1565         if (new_state == NLP_STE_NPR_NODE)
1566                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1567
1568         /* Transport interface */
1569         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1570                             old_state == NLP_STE_UNMAPPED_NODE)) {
1571                 vport->phba->nport_event_cnt++;
1572                 lpfc_unregister_remote_port(ndlp);
1573         }
1574
1575         if (new_state ==  NLP_STE_MAPPED_NODE ||
1576             new_state == NLP_STE_UNMAPPED_NODE) {
1577                 vport->phba->nport_event_cnt++;
1578                 /*
1579                  * Tell the fc transport about the port, if we haven't
1580                  * already. If we have, and it's a scsi entity, be
1581                  * sure to unblock any attached scsi devices
1582                  */
1583                 lpfc_register_remote_port(vport, ndlp);
1584         }
1585         /*
1586          * if we added to Mapped list, but the remote port
1587          * registration failed or assigned a target id outside
1588          * our presentable range - move the node to the
1589          * Unmapped List
1590          */
1591         if (new_state == NLP_STE_MAPPED_NODE &&
1592             (!ndlp->rport ||
1593              ndlp->rport->scsi_target_id == -1 ||
1594              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1595                 spin_lock_irq(shost->host_lock);
1596                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1597                 spin_unlock_irq(shost->host_lock);
1598                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1599         }
1600 }
1601
1602 static char *
1603 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1604 {
1605         static char *states[] = {
1606                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1607                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1608                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1609                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1610                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1611                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1612                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1613                 [NLP_STE_NPR_NODE] = "NPR",
1614         };
1615
1616         if (state < NLP_STE_MAX_STATE && states[state])
1617                 strlcpy(buffer, states[state], size);
1618         else
1619                 snprintf(buffer, size, "unknown (%d)", state);
1620         return buffer;
1621 }
1622
1623 void
1624 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1625                    int state)
1626 {
1627         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1628         int  old_state = ndlp->nlp_state;
1629         char name1[16], name2[16];
1630
1631         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1632                          "0904 NPort state transition x%06x, %s -> %s\n",
1633                          ndlp->nlp_DID,
1634                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1635                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1636
1637         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1638                 "node statechg    did:x%x old:%d ste:%d",
1639                 ndlp->nlp_DID, old_state, state);
1640
1641         if (old_state == NLP_STE_NPR_NODE &&
1642             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1643             state != NLP_STE_NPR_NODE)
1644                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1645         if (old_state == NLP_STE_UNMAPPED_NODE) {
1646                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1647                 ndlp->nlp_type &= ~NLP_FC_NODE;
1648         }
1649
1650         if (list_empty(&ndlp->nlp_listp)) {
1651                 spin_lock_irq(shost->host_lock);
1652                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1653                 spin_unlock_irq(shost->host_lock);
1654         } else if (old_state)
1655                 lpfc_nlp_counters(vport, old_state, -1);
1656
1657         ndlp->nlp_state = state;
1658         lpfc_nlp_counters(vport, state, 1);
1659         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1660 }
1661
1662 void
1663 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1664 {
1665         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1666
1667         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1668                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1669         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1670                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1671         spin_lock_irq(shost->host_lock);
1672         list_del_init(&ndlp->nlp_listp);
1673         spin_unlock_irq(shost->host_lock);
1674         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1675                                NLP_STE_UNUSED_NODE);
1676 }
1677
1678 void
1679 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1680 {
1681         /*
1682          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1683          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1684          * the ndlp from the vport. The ndlp marked as UNUSED on the list
1685          * until ALL other outstanding threads have completed. We check
1686          * that the ndlp not already in the UNUSED state before we proceed.
1687          */
1688         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1689                 return;
1690         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1691         lpfc_nlp_put(ndlp);
1692         return;
1693 }
1694
1695 /*
1696  * Start / ReStart rescue timer for Discovery / RSCN handling
1697  */
1698 void
1699 lpfc_set_disctmo(struct lpfc_vport *vport)
1700 {
1701         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1702         struct lpfc_hba  *phba = vport->phba;
1703         uint32_t tmo;
1704
1705         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1706                 /* For FAN, timeout should be greater then edtov */
1707                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1708         } else {
1709                 /* Normal discovery timeout should be > then ELS/CT timeout
1710                  * FC spec states we need 3 * ratov for CT requests
1711                  */
1712                 tmo = ((phba->fc_ratov * 3) + 3);
1713         }
1714
1715
1716         if (!timer_pending(&vport->fc_disctmo)) {
1717                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1718                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1719                         tmo, vport->port_state, vport->fc_flag);
1720         }
1721
1722         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1723         spin_lock_irq(shost->host_lock);
1724         vport->fc_flag |= FC_DISC_TMO;
1725         spin_unlock_irq(shost->host_lock);
1726
1727         /* Start Discovery Timer state <hba_state> */
1728         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1729                          "0247 Start Discovery Timer state x%x "
1730                          "Data: x%x x%lx x%x x%x\n",
1731                          vport->port_state, tmo,
1732                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1733                          vport->fc_adisc_cnt);
1734
1735         return;
1736 }
1737
1738 /*
1739  * Cancel rescue timer for Discovery / RSCN handling
1740  */
1741 int
1742 lpfc_can_disctmo(struct lpfc_vport *vport)
1743 {
1744         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1745         unsigned long iflags;
1746
1747         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1748                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1749                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1750
1751         /* Turn off discovery timer if its running */
1752         if (vport->fc_flag & FC_DISC_TMO) {
1753                 spin_lock_irqsave(shost->host_lock, iflags);
1754                 vport->fc_flag &= ~FC_DISC_TMO;
1755                 spin_unlock_irqrestore(shost->host_lock, iflags);
1756                 del_timer_sync(&vport->fc_disctmo);
1757                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1758                 vport->work_port_events &= ~WORKER_DISC_TMO;
1759                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1760         }
1761
1762         /* Cancel Discovery Timer state <hba_state> */
1763         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1764                          "0248 Cancel Discovery Timer state x%x "
1765                          "Data: x%x x%x x%x\n",
1766                          vport->port_state, vport->fc_flag,
1767                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1768         return 0;
1769 }
1770
1771 /*
1772  * Check specified ring for outstanding IOCB on the SLI queue
1773  * Return true if iocb matches the specified nport
1774  */
1775 int
1776 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1777                     struct lpfc_sli_ring *pring,
1778                     struct lpfc_iocbq *iocb,
1779                     struct lpfc_nodelist *ndlp)
1780 {
1781         struct lpfc_sli *psli = &phba->sli;
1782         IOCB_t *icmd = &iocb->iocb;
1783         struct lpfc_vport    *vport = ndlp->vport;
1784
1785         if (iocb->vport != vport)
1786                 return 0;
1787
1788         if (pring->ringno == LPFC_ELS_RING) {
1789                 switch (icmd->ulpCommand) {
1790                 case CMD_GEN_REQUEST64_CR:
1791                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1792                                 return 1;
1793                 case CMD_ELS_REQUEST64_CR:
1794                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1795                                 return 1;
1796                 case CMD_XMIT_ELS_RSP64_CX:
1797                         if (iocb->context1 == (uint8_t *) ndlp)
1798                                 return 1;
1799                 }
1800         } else if (pring->ringno == psli->extra_ring) {
1801
1802         } else if (pring->ringno == psli->fcp_ring) {
1803                 /* Skip match check if waiting to relogin to FCP target */
1804                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1805                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1806                         return 0;
1807                 }
1808                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1809                         return 1;
1810                 }
1811         } else if (pring->ringno == psli->next_ring) {
1812
1813         }
1814         return 0;
1815 }
1816
1817 /*
1818  * Free resources / clean up outstanding I/Os
1819  * associated with nlp_rpi in the LPFC_NODELIST entry.
1820  */
1821 static int
1822 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1823 {
1824         LIST_HEAD(completions);
1825         struct lpfc_sli *psli;
1826         struct lpfc_sli_ring *pring;
1827         struct lpfc_iocbq *iocb, *next_iocb;
1828         IOCB_t *icmd;
1829         uint32_t rpi, i;
1830
1831         lpfc_fabric_abort_nport(ndlp);
1832
1833         /*
1834          * Everything that matches on txcmplq will be returned
1835          * by firmware with a no rpi error.
1836          */
1837         psli = &phba->sli;
1838         rpi = ndlp->nlp_rpi;
1839         if (rpi) {
1840                 /* Now process each ring */
1841                 for (i = 0; i < psli->num_rings; i++) {
1842                         pring = &psli->ring[i];
1843
1844                         spin_lock_irq(&phba->hbalock);
1845                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1846                                                  list) {
1847                                 /*
1848                                  * Check to see if iocb matches the nport we are
1849                                  * looking for
1850                                  */
1851                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1852                                                          ndlp))) {
1853                                         /* It matches, so deque and call compl
1854                                            with an error */
1855                                         list_move_tail(&iocb->list,
1856                                                        &completions);
1857                                         pring->txq_cnt--;
1858                                 }
1859                         }
1860                         spin_unlock_irq(&phba->hbalock);
1861                 }
1862         }
1863
1864         while (!list_empty(&completions)) {
1865                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1866                 list_del_init(&iocb->list);
1867
1868                 if (!iocb->iocb_cmpl)
1869                         lpfc_sli_release_iocbq(phba, iocb);
1870                 else {
1871                         icmd = &iocb->iocb;
1872                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1873                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1874                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1875                 }
1876         }
1877
1878         return 0;
1879 }
1880
1881 /*
1882  * Free rpi associated with LPFC_NODELIST entry.
1883  * This routine is called from lpfc_freenode(), when we are removing
1884  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1885  * LOGO that completes successfully, and we are waiting to PLOGI back
1886  * to the remote NPort. In addition, it is called after we receive
1887  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1888  * we are waiting to PLOGI back to the remote NPort.
1889  */
1890 int
1891 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1892 {
1893         struct lpfc_hba *phba = vport->phba;
1894         LPFC_MBOXQ_t    *mbox;
1895         int rc;
1896
1897         if (ndlp->nlp_rpi) {
1898                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1899                 if (mbox) {
1900                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1901                         mbox->vport = vport;
1902                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1903                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1904                         if (rc == MBX_NOT_FINISHED)
1905                                 mempool_free(mbox, phba->mbox_mem_pool);
1906                 }
1907                 lpfc_no_rpi(phba, ndlp);
1908                 ndlp->nlp_rpi = 0;
1909                 return 1;
1910         }
1911         return 0;
1912 }
1913
1914 void
1915 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1916 {
1917         struct lpfc_hba  *phba  = vport->phba;
1918         LPFC_MBOXQ_t     *mbox;
1919         int rc;
1920
1921         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1922         if (mbox) {
1923                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1924                 mbox->vport = vport;
1925                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1926                 mbox->context1 = NULL;
1927                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1928                 if (rc == MBX_NOT_FINISHED) {
1929                         mempool_free(mbox, phba->mbox_mem_pool);
1930                 }
1931         }
1932 }
1933
1934 void
1935 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1936 {
1937         struct lpfc_hba  *phba  = vport->phba;
1938         LPFC_MBOXQ_t     *mbox;
1939         int rc;
1940
1941         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1942         if (mbox) {
1943                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1944                 mbox->vport = vport;
1945                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1946                 mbox->context1 = NULL;
1947                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1948                 if (rc == MBX_NOT_FINISHED) {
1949                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1950                                          "1815 Could not issue "
1951                                          "unreg_did (default rpis)\n");
1952                         mempool_free(mbox, phba->mbox_mem_pool);
1953                 }
1954         }
1955 }
1956
1957 /*
1958  * Free resources associated with LPFC_NODELIST entry
1959  * so it can be freed.
1960  */
1961 static int
1962 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1963 {
1964         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1965         struct lpfc_hba  *phba = vport->phba;
1966         LPFC_MBOXQ_t *mb, *nextmb;
1967         struct lpfc_dmabuf *mp;
1968
1969         /* Cleanup node for NPort <nlp_DID> */
1970         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1971                          "0900 Cleanup node for NPort x%x "
1972                          "Data: x%x x%x x%x\n",
1973                          ndlp->nlp_DID, ndlp->nlp_flag,
1974                          ndlp->nlp_state, ndlp->nlp_rpi);
1975         lpfc_dequeue_node(vport, ndlp);
1976
1977         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1978         if ((mb = phba->sli.mbox_active)) {
1979                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1980                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1981                         mb->context2 = NULL;
1982                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1983                 }
1984         }
1985
1986         spin_lock_irq(&phba->hbalock);
1987         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1988                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1989                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1990                         mp = (struct lpfc_dmabuf *) (mb->context1);
1991                         if (mp) {
1992                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1993                                 kfree(mp);
1994                         }
1995                         list_del(&mb->list);
1996                         mempool_free(mb, phba->mbox_mem_pool);
1997                         lpfc_nlp_put(ndlp);
1998                 }
1999         }
2000         spin_unlock_irq(&phba->hbalock);
2001
2002         lpfc_els_abort(phba,ndlp);
2003         spin_lock_irq(shost->host_lock);
2004         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2005         spin_unlock_irq(shost->host_lock);
2006
2007         ndlp->nlp_last_elscmd = 0;
2008         del_timer_sync(&ndlp->nlp_delayfunc);
2009
2010         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
2011                 list_del_init(&ndlp->els_retry_evt.evt_listp);
2012         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
2013                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2014
2015         lpfc_unreg_rpi(vport, ndlp);
2016
2017         return 0;
2018 }
2019
2020 /*
2021  * Check to see if we can free the nlp back to the freelist.
2022  * If we are in the middle of using the nlp in the discovery state
2023  * machine, defer the free till we reach the end of the state machine.
2024  */
2025 static void
2026 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2027 {
2028         struct lpfc_hba  *phba = vport->phba;
2029         struct lpfc_rport_data *rdata;
2030         LPFC_MBOXQ_t *mbox;
2031         int rc;
2032
2033         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2034                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2035         }
2036
2037         if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2038                 /* For this case we need to cleanup the default rpi
2039                  * allocated by the firmware.
2040                  */
2041                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2042                         != NULL) {
2043                         rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2044                             (uint8_t *) &vport->fc_sparam, mbox, 0);
2045                         if (rc) {
2046                                 mempool_free(mbox, phba->mbox_mem_pool);
2047                         }
2048                         else {
2049                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2050                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2051                                 mbox->vport = vport;
2052                                 mbox->context2 = NULL;
2053                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2054                                 if (rc == MBX_NOT_FINISHED) {
2055                                         mempool_free(mbox, phba->mbox_mem_pool);
2056                                 }
2057                         }
2058                 }
2059         }
2060
2061         lpfc_cleanup_node(vport, ndlp);
2062
2063         /*
2064          * We can get here with a non-NULL ndlp->rport because when we
2065          * unregister a rport we don't break the rport/node linkage.  So if we
2066          * do, make sure we don't leaving any dangling pointers behind.
2067          */
2068         if (ndlp->rport) {
2069                 rdata = ndlp->rport->dd_data;
2070                 rdata->pnode = NULL;
2071                 ndlp->rport = NULL;
2072         }
2073 }
2074
2075 static int
2076 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2077               uint32_t did)
2078 {
2079         D_ID mydid, ndlpdid, matchdid;
2080
2081         if (did == Bcast_DID)
2082                 return 0;
2083
2084         if (ndlp->nlp_DID == 0) {
2085                 return 0;
2086         }
2087
2088         /* First check for Direct match */
2089         if (ndlp->nlp_DID == did)
2090                 return 1;
2091
2092         /* Next check for area/domain identically equals 0 match */
2093         mydid.un.word = vport->fc_myDID;
2094         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2095                 return 0;
2096         }
2097
2098         matchdid.un.word = did;
2099         ndlpdid.un.word = ndlp->nlp_DID;
2100         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2101                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2102                     (mydid.un.b.area == matchdid.un.b.area)) {
2103                         if ((ndlpdid.un.b.domain == 0) &&
2104                             (ndlpdid.un.b.area == 0)) {
2105                                 if (ndlpdid.un.b.id)
2106                                         return 1;
2107                         }
2108                         return 0;
2109                 }
2110
2111                 matchdid.un.word = ndlp->nlp_DID;
2112                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2113                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2114                         if ((matchdid.un.b.domain == 0) &&
2115                             (matchdid.un.b.area == 0)) {
2116                                 if (matchdid.un.b.id)
2117                                         return 1;
2118                         }
2119                 }
2120         }
2121         return 0;
2122 }
2123
2124 /* Search for a nodelist entry */
2125 static struct lpfc_nodelist *
2126 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2127 {
2128         struct lpfc_nodelist *ndlp;
2129         uint32_t data1;
2130
2131         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2132                 if (lpfc_matchdid(vport, ndlp, did)) {
2133                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2134                                  ((uint32_t) ndlp->nlp_xri << 16) |
2135                                  ((uint32_t) ndlp->nlp_type << 8) |
2136                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2137                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2138                                          "0929 FIND node DID "
2139                                          "Data: x%p x%x x%x x%x\n",
2140                                          ndlp, ndlp->nlp_DID,
2141                                          ndlp->nlp_flag, data1);
2142                         return ndlp;
2143                 }
2144         }
2145
2146         /* FIND node did <did> NOT FOUND */
2147         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2148                          "0932 FIND node did x%x NOT FOUND.\n", did);
2149         return NULL;
2150 }
2151
2152 struct lpfc_nodelist *
2153 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2154 {
2155         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2156         struct lpfc_nodelist *ndlp;
2157
2158         spin_lock_irq(shost->host_lock);
2159         ndlp = __lpfc_findnode_did(vport, did);
2160         spin_unlock_irq(shost->host_lock);
2161         return ndlp;
2162 }
2163
2164 struct lpfc_nodelist *
2165 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2166 {
2167         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2168         struct lpfc_nodelist *ndlp;
2169
2170         ndlp = lpfc_findnode_did(vport, did);
2171         if (!ndlp) {
2172                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2173                     lpfc_rscn_payload_check(vport, did) == 0)
2174                         return NULL;
2175                 ndlp = (struct lpfc_nodelist *)
2176                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2177                 if (!ndlp)
2178                         return NULL;
2179                 lpfc_nlp_init(vport, ndlp, did);
2180                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2181                 spin_lock_irq(shost->host_lock);
2182                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2183                 spin_unlock_irq(shost->host_lock);
2184                 return ndlp;
2185         }
2186         if (vport->fc_flag & FC_RSCN_MODE) {
2187                 if (lpfc_rscn_payload_check(vport, did)) {
2188                         /* If we've already recieved a PLOGI from this NPort
2189                          * we don't need to try to discover it again.
2190                          */
2191                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2192                                 return NULL;
2193
2194                         spin_lock_irq(shost->host_lock);
2195                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2196                         spin_unlock_irq(shost->host_lock);
2197
2198                         /* Since this node is marked for discovery,
2199                          * delay timeout is not needed.
2200                          */
2201                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2202                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2203                 } else
2204                         ndlp = NULL;
2205         } else {
2206                 /* If we've already recieved a PLOGI from this NPort,
2207                  * or we are already in the process of discovery on it,
2208                  * we don't need to try to discover it again.
2209                  */
2210                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2211                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2212                     ndlp->nlp_flag & NLP_RCV_PLOGI)
2213                         return NULL;
2214                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2215                 spin_lock_irq(shost->host_lock);
2216                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2217                 spin_unlock_irq(shost->host_lock);
2218         }
2219         return ndlp;
2220 }
2221
2222 /* Build a list of nodes to discover based on the loopmap */
2223 void
2224 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2225 {
2226         struct lpfc_hba  *phba = vport->phba;
2227         int j;
2228         uint32_t alpa, index;
2229
2230         if (!lpfc_is_link_up(phba))
2231                 return;
2232
2233         if (phba->fc_topology != TOPOLOGY_LOOP)
2234                 return;
2235
2236         /* Check for loop map present or not */
2237         if (phba->alpa_map[0]) {
2238                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2239                         alpa = phba->alpa_map[j];
2240                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2241                                 continue;
2242                         lpfc_setup_disc_node(vport, alpa);
2243                 }
2244         } else {
2245                 /* No alpamap, so try all alpa's */
2246                 for (j = 0; j < FC_MAXLOOP; j++) {
2247                         /* If cfg_scan_down is set, start from highest
2248                          * ALPA (0xef) to lowest (0x1).
2249                          */
2250                         if (vport->cfg_scan_down)
2251                                 index = j;
2252                         else
2253                                 index = FC_MAXLOOP - j - 1;
2254                         alpa = lpfcAlpaArray[index];
2255                         if ((vport->fc_myDID & 0xff) == alpa)
2256                                 continue;
2257                         lpfc_setup_disc_node(vport, alpa);
2258                 }
2259         }
2260         return;
2261 }
2262
2263 void
2264 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2265 {
2266         LPFC_MBOXQ_t *mbox;
2267         struct lpfc_sli *psli = &phba->sli;
2268         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2269         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2270         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2271         int  rc;
2272
2273         /*
2274          * if it's not a physical port or if we already send
2275          * clear_la then don't send it.
2276          */
2277         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2278             (vport->port_type != LPFC_PHYSICAL_PORT))
2279                 return;
2280
2281                         /* Link up discovery */
2282         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2283                 phba->link_state = LPFC_CLEAR_LA;
2284                 lpfc_clear_la(phba, mbox);
2285                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2286                 mbox->vport = vport;
2287                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2288                 if (rc == MBX_NOT_FINISHED) {
2289                         mempool_free(mbox, phba->mbox_mem_pool);
2290                         lpfc_disc_flush_list(vport);
2291                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2292                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2293                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2294                         phba->link_state = LPFC_HBA_ERROR;
2295                 }
2296         }
2297 }
2298
2299 /* Reg_vpi to tell firmware to resume normal operations */
2300 void
2301 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2302 {
2303         LPFC_MBOXQ_t *regvpimbox;
2304
2305         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2306         if (regvpimbox) {
2307                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2308                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2309                 regvpimbox->vport = vport;
2310                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2311                                         == MBX_NOT_FINISHED) {
2312                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2313                 }
2314         }
2315 }
2316
2317 /* Start Link up / RSCN discovery on NPR nodes */
2318 void
2319 lpfc_disc_start(struct lpfc_vport *vport)
2320 {
2321         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2322         struct lpfc_hba  *phba = vport->phba;
2323         uint32_t num_sent;
2324         uint32_t clear_la_pending;
2325         int did_changed;
2326
2327         if (!lpfc_is_link_up(phba))
2328                 return;
2329
2330         if (phba->link_state == LPFC_CLEAR_LA)
2331                 clear_la_pending = 1;
2332         else
2333                 clear_la_pending = 0;
2334
2335         if (vport->port_state < LPFC_VPORT_READY)
2336                 vport->port_state = LPFC_DISC_AUTH;
2337
2338         lpfc_set_disctmo(vport);
2339
2340         if (vport->fc_prevDID == vport->fc_myDID)
2341                 did_changed = 0;
2342         else
2343                 did_changed = 1;
2344
2345         vport->fc_prevDID = vport->fc_myDID;
2346         vport->num_disc_nodes = 0;
2347
2348         /* Start Discovery state <hba_state> */
2349         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2350                          "0202 Start Discovery hba state x%x "
2351                          "Data: x%x x%x x%x\n",
2352                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2353                          vport->fc_adisc_cnt);
2354
2355         /* First do ADISCs - if any */
2356         num_sent = lpfc_els_disc_adisc(vport);
2357
2358         if (num_sent)
2359                 return;
2360
2361         /*
2362          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2363          * continue discovery.
2364          */
2365         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2366             !(vport->fc_flag & FC_RSCN_MODE)) {
2367                 lpfc_issue_reg_vpi(phba, vport);
2368                 return;
2369         }
2370
2371         /*
2372          * For SLI2, we need to set port_state to READY and continue
2373          * discovery.
2374          */
2375         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2376                 /* If we get here, there is nothing to ADISC */
2377                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2378                         lpfc_issue_clear_la(phba, vport);
2379
2380                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2381                         vport->num_disc_nodes = 0;
2382                         /* go thru NPR nodes and issue ELS PLOGIs */
2383                         if (vport->fc_npr_cnt)
2384                                 lpfc_els_disc_plogi(vport);
2385
2386                         if (!vport->num_disc_nodes) {
2387                                 spin_lock_irq(shost->host_lock);
2388                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2389                                 spin_unlock_irq(shost->host_lock);
2390                                 lpfc_can_disctmo(vport);
2391                         }
2392                 }
2393                 vport->port_state = LPFC_VPORT_READY;
2394         } else {
2395                 /* Next do PLOGIs - if any */
2396                 num_sent = lpfc_els_disc_plogi(vport);
2397
2398                 if (num_sent)
2399                         return;
2400
2401                 if (vport->fc_flag & FC_RSCN_MODE) {
2402                         /* Check to see if more RSCNs came in while we
2403                          * were processing this one.
2404                          */
2405                         if ((vport->fc_rscn_id_cnt == 0) &&
2406                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2407                                 spin_lock_irq(shost->host_lock);
2408                                 vport->fc_flag &= ~FC_RSCN_MODE;
2409                                 spin_unlock_irq(shost->host_lock);
2410                                 lpfc_can_disctmo(vport);
2411                         } else
2412                                 lpfc_els_handle_rscn(vport);
2413                 }
2414         }
2415         return;
2416 }
2417
2418 /*
2419  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2420  *  ring the match the sppecified nodelist.
2421  */
2422 static void
2423 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2424 {
2425         LIST_HEAD(completions);
2426         struct lpfc_sli *psli;
2427         IOCB_t     *icmd;
2428         struct lpfc_iocbq    *iocb, *next_iocb;
2429         struct lpfc_sli_ring *pring;
2430
2431         psli = &phba->sli;
2432         pring = &psli->ring[LPFC_ELS_RING];
2433
2434         /* Error matching iocb on txq or txcmplq
2435          * First check the txq.
2436          */
2437         spin_lock_irq(&phba->hbalock);
2438         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2439                 if (iocb->context1 != ndlp) {
2440                         continue;
2441                 }
2442                 icmd = &iocb->iocb;
2443                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2444                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2445
2446                         list_move_tail(&iocb->list, &completions);
2447                         pring->txq_cnt--;
2448                 }
2449         }
2450
2451         /* Next check the txcmplq */
2452         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2453                 if (iocb->context1 != ndlp) {
2454                         continue;
2455                 }
2456                 icmd = &iocb->iocb;
2457                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2458                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2459                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2460                 }
2461         }
2462         spin_unlock_irq(&phba->hbalock);
2463
2464         while (!list_empty(&completions)) {
2465                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2466                 list_del_init(&iocb->list);
2467
2468                 if (!iocb->iocb_cmpl)
2469                         lpfc_sli_release_iocbq(phba, iocb);
2470                 else {
2471                         icmd = &iocb->iocb;
2472                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2473                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2474                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2475                 }
2476         }
2477 }
2478
2479 static void
2480 lpfc_disc_flush_list(struct lpfc_vport *vport)
2481 {
2482         struct lpfc_nodelist *ndlp, *next_ndlp;
2483         struct lpfc_hba *phba = vport->phba;
2484
2485         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2486                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2487                                          nlp_listp) {
2488                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2489                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2490                                 lpfc_free_tx(phba, ndlp);
2491                         }
2492                 }
2493         }
2494 }
2495
2496 void
2497 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2498 {
2499         lpfc_els_flush_rscn(vport);
2500         lpfc_els_flush_cmd(vport);
2501         lpfc_disc_flush_list(vport);
2502 }
2503
2504 /*****************************************************************************/
2505 /*
2506  * NAME:     lpfc_disc_timeout
2507  *
2508  * FUNCTION: Fibre Channel driver discovery timeout routine.
2509  *
2510  * EXECUTION ENVIRONMENT: interrupt only
2511  *
2512  * CALLED FROM:
2513  *      Timer function
2514  *
2515  * RETURNS:
2516  *      none
2517  */
2518 /*****************************************************************************/
2519 void
2520 lpfc_disc_timeout(unsigned long ptr)
2521 {
2522         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2523         struct lpfc_hba   *phba = vport->phba;
2524         unsigned long flags = 0;
2525
2526         if (unlikely(!phba))
2527                 return;
2528
2529         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2530                 spin_lock_irqsave(&vport->work_port_lock, flags);
2531                 vport->work_port_events |= WORKER_DISC_TMO;
2532                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2533
2534                 spin_lock_irqsave(&phba->hbalock, flags);
2535                 if (phba->work_wait)
2536                         lpfc_worker_wake_up(phba);
2537                 spin_unlock_irqrestore(&phba->hbalock, flags);
2538         }
2539         return;
2540 }
2541
2542 static void
2543 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2544 {
2545         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2546         struct lpfc_hba  *phba = vport->phba;
2547         struct lpfc_sli  *psli = &phba->sli;
2548         struct lpfc_nodelist *ndlp, *next_ndlp;
2549         LPFC_MBOXQ_t *initlinkmbox;
2550         int rc, clrlaerr = 0;
2551
2552         if (!(vport->fc_flag & FC_DISC_TMO))
2553                 return;
2554
2555         spin_lock_irq(shost->host_lock);
2556         vport->fc_flag &= ~FC_DISC_TMO;
2557         spin_unlock_irq(shost->host_lock);
2558
2559         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2560                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2561                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2562
2563         switch (vport->port_state) {
2564
2565         case LPFC_LOCAL_CFG_LINK:
2566         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2567          * FAN
2568          */
2569                                 /* FAN timeout */
2570                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2571                                  "0221 FAN timeout\n");
2572                 /* Start discovery by sending FLOGI, clean up old rpis */
2573                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2574                                          nlp_listp) {
2575                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2576                                 continue;
2577                         if (ndlp->nlp_type & NLP_FABRIC) {
2578                                 /* Clean up the ndlp on Fabric connections */
2579                                 lpfc_drop_node(vport, ndlp);
2580
2581                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2582                                 /* Fail outstanding IO now since device
2583                                  * is marked for PLOGI.
2584                                  */
2585                                 lpfc_unreg_rpi(vport, ndlp);
2586                         }
2587                 }
2588                 if (vport->port_state != LPFC_FLOGI) {
2589                         lpfc_initial_flogi(vport);
2590                         return;
2591                 }
2592                 break;
2593
2594         case LPFC_FDISC:
2595         case LPFC_FLOGI:
2596         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2597                 /* Initial FLOGI timeout */
2598                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2599                                  "0222 Initial %s timeout\n",
2600                                  vport->vpi ? "FDISC" : "FLOGI");
2601
2602                 /* Assume no Fabric and go on with discovery.
2603                  * Check for outstanding ELS FLOGI to abort.
2604                  */
2605
2606                 /* FLOGI failed, so just use loop map to make discovery list */
2607                 lpfc_disc_list_loopmap(vport);
2608
2609                 /* Start discovery */
2610                 lpfc_disc_start(vport);
2611                 break;
2612
2613         case LPFC_FABRIC_CFG_LINK:
2614         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2615            NameServer login */
2616                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2617                                  "0223 Timeout while waiting for "
2618                                  "NameServer login\n");
2619                 /* Next look for NameServer ndlp */
2620                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2621                 if (ndlp)
2622                         lpfc_els_abort(phba, ndlp);
2623
2624                 /* ReStart discovery */
2625                 goto restart_disc;
2626
2627         case LPFC_NS_QRY:
2628         /* Check for wait for NameServer Rsp timeout */
2629                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2630                                  "0224 NameServer Query timeout "
2631                                  "Data: x%x x%x\n",
2632                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2633
2634                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2635                         /* Try it one more time */
2636                         vport->fc_ns_retry++;
2637                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2638                                          vport->fc_ns_retry, 0);
2639                         if (rc == 0)
2640                                 break;
2641                 }
2642                 vport->fc_ns_retry = 0;
2643
2644 restart_disc:
2645                 /*
2646                  * Discovery is over.
2647                  * set port_state to PORT_READY if SLI2.
2648                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2649                  */
2650                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2651                         lpfc_issue_reg_vpi(phba, vport);
2652                 else  { /* NPIV Not enabled */
2653                         lpfc_issue_clear_la(phba, vport);
2654                         vport->port_state = LPFC_VPORT_READY;
2655                 }
2656
2657                 /* Setup and issue mailbox INITIALIZE LINK command */
2658                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2659                 if (!initlinkmbox) {
2660                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2661                                          "0206 Device Discovery "
2662                                          "completion error\n");
2663                         phba->link_state = LPFC_HBA_ERROR;
2664                         break;
2665                 }
2666
2667                 lpfc_linkdown(phba);
2668                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2669                                phba->cfg_link_speed);
2670                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2671                 initlinkmbox->vport = vport;
2672                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2673                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2674                 lpfc_set_loopback_flag(phba);
2675                 if (rc == MBX_NOT_FINISHED)
2676                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2677
2678                 break;
2679
2680         case LPFC_DISC_AUTH:
2681         /* Node Authentication timeout */
2682                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2683                                  "0227 Node Authentication timeout\n");
2684                 lpfc_disc_flush_list(vport);
2685
2686                 /*
2687                  * set port_state to PORT_READY if SLI2.
2688                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2689                  */
2690                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2691                         lpfc_issue_reg_vpi(phba, vport);
2692                 else {  /* NPIV Not enabled */
2693                         lpfc_issue_clear_la(phba, vport);
2694                         vport->port_state = LPFC_VPORT_READY;
2695                 }
2696                 break;
2697
2698         case LPFC_VPORT_READY:
2699                 if (vport->fc_flag & FC_RSCN_MODE) {
2700                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2701                                          "0231 RSCN timeout Data: x%x "
2702                                          "x%x\n",
2703                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2704
2705                         /* Cleanup any outstanding ELS commands */
2706                         lpfc_els_flush_cmd(vport);
2707
2708                         lpfc_els_flush_rscn(vport);
2709                         lpfc_disc_flush_list(vport);
2710                 }
2711                 break;
2712
2713         default:
2714                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2715                                  "0229 Unexpected discovery timeout, "
2716                                  "vport State x%x\n", vport->port_state);
2717                 break;
2718         }
2719
2720         switch (phba->link_state) {
2721         case LPFC_CLEAR_LA:
2722                                 /* CLEAR LA timeout */
2723                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2724                                  "0228 CLEAR LA timeout\n");
2725                 clrlaerr = 1;
2726                 break;
2727
2728         case LPFC_LINK_UP:
2729                 lpfc_issue_clear_la(phba, vport);
2730                 /* Drop thru */
2731         case LPFC_LINK_UNKNOWN:
2732         case LPFC_WARM_START:
2733         case LPFC_INIT_START:
2734         case LPFC_INIT_MBX_CMDS:
2735         case LPFC_LINK_DOWN:
2736         case LPFC_HBA_ERROR:
2737                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2738                                  "0230 Unexpected timeout, hba link "
2739                                  "state x%x\n", phba->link_state);
2740                 clrlaerr = 1;
2741                 break;
2742
2743         case LPFC_HBA_READY:
2744                 break;
2745         }
2746
2747         if (clrlaerr) {
2748                 lpfc_disc_flush_list(vport);
2749                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2750                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2751                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2752                 vport->port_state = LPFC_VPORT_READY;
2753         }
2754
2755         return;
2756 }
2757
2758 /*
2759  * This routine handles processing a NameServer REG_LOGIN mailbox
2760  * command upon completion. It is setup in the LPFC_MBOXQ
2761  * as the completion routine when the command is
2762  * handed off to the SLI layer.
2763  */
2764 void
2765 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2766 {
2767         MAILBOX_t *mb = &pmb->mb;
2768         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2769         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2770         struct lpfc_vport    *vport = pmb->vport;
2771
2772         pmb->context1 = NULL;
2773
2774         ndlp->nlp_rpi = mb->un.varWords[0];
2775         ndlp->nlp_type |= NLP_FABRIC;
2776         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2777
2778         /*
2779          * Start issuing Fabric-Device Management Interface (FDMI) command to
2780          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2781          * fdmi-on=2 (supporting RPA/hostnmae)
2782          */
2783
2784         if (vport->cfg_fdmi_on == 1)
2785                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2786         else
2787                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2788
2789         /* decrement the node reference count held for this callback
2790          * function.
2791          */
2792         lpfc_nlp_put(ndlp);
2793         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2794         kfree(mp);
2795         mempool_free(pmb, phba->mbox_mem_pool);
2796
2797         return;
2798 }
2799
2800 static int
2801 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2802 {
2803         uint16_t *rpi = param;
2804
2805         return ndlp->nlp_rpi == *rpi;
2806 }
2807
2808 static int
2809 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2810 {
2811         return memcmp(&ndlp->nlp_portname, param,
2812                       sizeof(ndlp->nlp_portname)) == 0;
2813 }
2814
2815 static struct lpfc_nodelist *
2816 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2817 {
2818         struct lpfc_nodelist *ndlp;
2819
2820         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2821                 if (filter(ndlp, param))
2822                         return ndlp;
2823         }
2824         return NULL;
2825 }
2826
2827 #if 0
2828 /*
2829  * Search node lists for a remote port matching filter criteria
2830  * Caller needs to hold host_lock before calling this routine.
2831  */
2832 struct lpfc_nodelist *
2833 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2834 {
2835         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2836         struct lpfc_nodelist *ndlp;
2837
2838         spin_lock_irq(shost->host_lock);
2839         ndlp = __lpfc_find_node(vport, filter, param);
2840         spin_unlock_irq(shost->host_lock);
2841         return ndlp;
2842 }
2843 #endif  /*  0  */
2844
2845 /*
2846  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2847  * returns the node list element pointer else return NULL.
2848  */
2849 struct lpfc_nodelist *
2850 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2851 {
2852         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2853 }
2854
2855 #if 0
2856 struct lpfc_nodelist *
2857 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2858 {
2859         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2860         struct lpfc_nodelist *ndlp;
2861
2862         spin_lock_irq(shost->host_lock);
2863         ndlp = __lpfc_findnode_rpi(vport, rpi);
2864         spin_unlock_irq(shost->host_lock);
2865         return ndlp;
2866 }
2867 #endif  /*  0  */
2868
2869 /*
2870  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2871  * returns the node element list pointer else return NULL.
2872  */
2873 struct lpfc_nodelist *
2874 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2875 {
2876         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2877         struct lpfc_nodelist *ndlp;
2878
2879         spin_lock_irq(shost->host_lock);
2880         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2881         spin_unlock_irq(shost->host_lock);
2882         return ndlp;
2883 }
2884
2885 void
2886 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2887               uint32_t did)
2888 {
2889         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2890         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2891         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2892         init_timer(&ndlp->nlp_delayfunc);
2893         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2894         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2895         ndlp->nlp_DID = did;
2896         ndlp->vport = vport;
2897         ndlp->nlp_sid = NLP_NO_SID;
2898         INIT_LIST_HEAD(&ndlp->nlp_listp);
2899         kref_init(&ndlp->kref);
2900
2901         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2902                 "node init:       did:x%x",
2903                 ndlp->nlp_DID, 0, 0);
2904
2905         return;
2906 }
2907
2908 /* This routine releases all resources associated with a specifc NPort's ndlp
2909  * and mempool_free's the nodelist.
2910  */
2911 static void
2912 lpfc_nlp_release(struct kref *kref)
2913 {
2914         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2915                                                   kref);
2916
2917         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2918                 "node release:    did:x%x flg:x%x type:x%x",
2919                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2920
2921         lpfc_nlp_remove(ndlp->vport, ndlp);
2922         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2923 }
2924
2925 /* This routine bumps the reference count for a ndlp structure to ensure
2926  * that one discovery thread won't free a ndlp while another discovery thread
2927  * is using it.
2928  */
2929 struct lpfc_nodelist *
2930 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2931 {
2932         if (ndlp) {
2933                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2934                         "node get:        did:x%x flg:x%x refcnt:x%x",
2935                         ndlp->nlp_DID, ndlp->nlp_flag,
2936                         atomic_read(&ndlp->kref.refcount));
2937                 kref_get(&ndlp->kref);
2938         }
2939         return ndlp;
2940 }
2941
2942
2943 /* This routine decrements the reference count for a ndlp structure. If the
2944  * count goes to 0, this indicates the the associated nodelist should be freed.
2945  */
2946 int
2947 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2948 {
2949         if (ndlp) {
2950                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2951                 "node put:        did:x%x flg:x%x refcnt:x%x",
2952                         ndlp->nlp_DID, ndlp->nlp_flag,
2953                         atomic_read(&ndlp->kref.refcount));
2954         }
2955         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2956 }
2957
2958 /* This routine free's the specified nodelist if it is not in use
2959  * by any other discovery thread. This routine returns 1 if the ndlp
2960  * is not being used by anyone and has been freed. A return value of
2961  * 0 indicates it is being used by another discovery thread and the
2962  * refcount is left unchanged.
2963  */
2964 int
2965 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
2966 {
2967         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2968                 "node not used:   did:x%x flg:x%x refcnt:x%x",
2969                 ndlp->nlp_DID, ndlp->nlp_flag,
2970                 atomic_read(&ndlp->kref.refcount));
2971
2972         if (atomic_read(&ndlp->kref.refcount) == 1) {
2973                 lpfc_nlp_put(ndlp);
2974                 return 1;
2975         }
2976         return 0;
2977 }
2978