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) 2004-2008 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 || !NLP_CHK_NODE_ACT(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 || !NLP_CHK_NODE_ACT(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 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 247                                  "NPort x%06x 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 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 256                                  "NPort x%06x 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 void
 281 lpfc_worker_wake_up(struct lpfc_hba *phba)
 282 {
 283         wake_up(phba->work_wait);
 284         return;
 285 }
 286
 287 static void
 288 lpfc_work_list_done(struct lpfc_hba *phba)
 289 {
 290         struct lpfc_work_evt  *evtp = NULL;
 291         struct lpfc_nodelist  *ndlp;
 292         int free_evt;
 293
 294         spin_lock_irq(&phba->hbalock);
 295         while (!list_empty(&phba->work_list)) {
 296                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 297                                  evt_listp);
 298                 spin_unlock_irq(&phba->hbalock);
 299                 free_evt = 1;
 300                 switch (evtp->evt) {
 301                 case LPFC_EVT_ELS_RETRY:
 302                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 303                         lpfc_els_retry_delay_handler(ndlp);
 304                         free_evt = 0; /* evt is part of ndlp */
 305                         /* decrement the node reference count held
 306                          * for this queued work
 307                          */
 308                         lpfc_nlp_put(ndlp);
 309                         break;
 310                 case LPFC_EVT_DEV_LOSS:
 311                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 312                         lpfc_dev_loss_tmo_handler(ndlp);
 313                         free_evt = 0;
 314                         /* decrement the node reference count held for
 315                          * this queued work
 316                          */
 317                         lpfc_nlp_put(ndlp);
 318                         break;
 319                 case LPFC_EVT_ONLINE:
 320                         if (phba->link_state < LPFC_LINK_DOWN)
 321                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 322                         else
 323                                 *(int *) (evtp->evt_arg1) = 0;
 324                         complete((struct completion *)(evtp->evt_arg2));
 325                         break;
 326                 case LPFC_EVT_OFFLINE_PREP:
 327                         if (phba->link_state >= LPFC_LINK_DOWN)
 328                                 lpfc_offline_prep(phba);
 329                         *(int *)(evtp->evt_arg1) = 0;
 330                         complete((struct completion *)(evtp->evt_arg2));
 331                         break;
 332                 case LPFC_EVT_OFFLINE:
 333                         lpfc_offline(phba);
 334                         lpfc_sli_brdrestart(phba);
 335                         *(int *)(evtp->evt_arg1) =
 336                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 337                         lpfc_unblock_mgmt_io(phba);
 338                         complete((struct completion *)(evtp->evt_arg2));
 339                         break;
 340                 case LPFC_EVT_WARM_START:
 341                         lpfc_offline(phba);
 342                         lpfc_reset_barrier(phba);
 343                         lpfc_sli_brdreset(phba);
 344                         lpfc_hba_down_post(phba);
 345                         *(int *)(evtp->evt_arg1) =
 346                                 lpfc_sli_brdready(phba, HS_MBRDY);
 347                         lpfc_unblock_mgmt_io(phba);
 348                         complete((struct completion *)(evtp->evt_arg2));
 349                         break;
 350                 case LPFC_EVT_KILL:
 351                         lpfc_offline(phba);
 352                         *(int *)(evtp->evt_arg1)
 353                                 = (phba->pport->stopped)
 354                                         ? 0 : lpfc_sli_brdkill(phba);
 355                         lpfc_unblock_mgmt_io(phba);
 356                         complete((struct completion *)(evtp->evt_arg2));
 357                         break;
 358                 }
 359                 if (free_evt)
 360                         kfree(evtp);
 361                 spin_lock_irq(&phba->hbalock);
 362         }
 363         spin_unlock_irq(&phba->hbalock);
 364
 365 }
 366
 367 static void
 368 lpfc_work_done(struct lpfc_hba *phba)
 369 {
 370         struct lpfc_sli_ring *pring;
 371         uint32_t ha_copy, status, control, work_port_events;
 372         struct lpfc_vport **vports;
 373         struct lpfc_vport *vport;
 374         int i;
 375
 376         spin_lock_irq(&phba->hbalock);
 377         ha_copy = phba->work_ha;
 378         phba->work_ha = 0;
 379         spin_unlock_irq(&phba->hbalock);
 380
 381         if (ha_copy & HA_ERATT)
 382                 lpfc_handle_eratt(phba);
 383
 384         if (ha_copy & HA_MBATT)
 385                 lpfc_sli_handle_mb_event(phba);
 386
 387         if (ha_copy & HA_LATT)
 388                 lpfc_handle_latt(phba);
 389         vports = lpfc_create_vport_work_array(phba);
 390         if (vports != NULL)
 391                 for(i = 0; i <= phba->max_vpi; i++) {
 392                         /*
 393                          * We could have no vports in array if unloading, so if
 394                          * this happens then just use the pport
 395                          */
 396                         if (vports[i] == NULL && i == 0)
 397                                 vport = phba->pport;
 398                         else
 399                                 vport = vports[i];
 400                         if (vport == NULL)
 401                                 break;
 402                         spin_lock_irq(&vport->work_port_lock);
 403                         work_port_events = vport->work_port_events;
 404                         vport->work_port_events &= ~work_port_events;
 405                         spin_unlock_irq(&vport->work_port_lock);
 406                         if (work_port_events & WORKER_DISC_TMO)
 407                                 lpfc_disc_timeout_handler(vport);
 408                         if (work_port_events & WORKER_ELS_TMO)
 409                                 lpfc_els_timeout_handler(vport);
 410                         if (work_port_events & WORKER_HB_TMO)
 411                                 lpfc_hb_timeout_handler(phba);
 412                         if (work_port_events & WORKER_MBOX_TMO)
 413                                 lpfc_mbox_timeout_handler(phba);
 414                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 415                                 lpfc_unblock_fabric_iocbs(phba);
 416                         if (work_port_events & WORKER_FDMI_TMO)
 417                                 lpfc_fdmi_timeout_handler(vport);
 418                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 419                                 lpfc_ramp_down_queue_handler(phba);
 420                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 421                                 lpfc_ramp_up_queue_handler(phba);
 422                 }
 423         lpfc_destroy_vport_work_array(phba, vports);
 424
 425         pring = &phba->sli.ring[LPFC_ELS_RING];
 426         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 427         status >>= (4*LPFC_ELS_RING);
 428         if ((status & HA_RXMASK)
 429                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 430                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 431                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 432                 } else {
 433                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 434                         lpfc_sli_handle_slow_ring_event(phba, pring,
 435                                                         (status &
 436                                                          HA_RXMASK));
 437                 }
 438                 /*
 439                  * Turn on Ring interrupts
 440                  */
 441                 spin_lock_irq(&phba->hbalock);
 442                 control = readl(phba->HCregaddr);
 443                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 444                         lpfc_debugfs_slow_ring_trc(phba,
 445                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 446                                 control, ha_copy, 0);
 447
 448                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 449                         writel(control, phba->HCregaddr);
 450                         readl(phba->HCregaddr); /* flush */
 451                 }
 452                 else {
 453                         lpfc_debugfs_slow_ring_trc(phba,
 454                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 455                                 control, ha_copy, 0);
 456                 }
 457                 spin_unlock_irq(&phba->hbalock);
 458         }
 459         lpfc_work_list_done(phba);
 460 }
 461
 462 static int
 463 check_work_wait_done(struct lpfc_hba *phba)
 464 {
 465         struct lpfc_vport *vport;
 466         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 467         int rc = 0;
 468
 469         spin_lock_irq(&phba->hbalock);
 470         list_for_each_entry(vport, &phba->port_list, listentry) {
 471                 if (vport->work_port_events) {
 472                         rc = 1;
 473                         break;
 474                 }
 475         }
 476         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 477             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 478                 rc = 1;
 479                 phba->work_found++;
 480         } else
 481                 phba->work_found = 0;
 482         spin_unlock_irq(&phba->hbalock);
 483         return rc;
 484 }
 485
 486
 487 int
 488 lpfc_do_work(void *p)
 489 {
 490         struct lpfc_hba *phba = p;
 491         int rc;
 492         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 493
 494         set_user_nice(current, -20);
 495         phba->work_wait = &work_waitq;
 496         phba->work_found = 0;
 497
 498         while (1) {
 499
 500                 rc = wait_event_interruptible(work_waitq,
 501                                               check_work_wait_done(phba));
 502
 503                 BUG_ON(rc);
 504
 505                 if (kthread_should_stop())
 506                         break;
 507
 508                 lpfc_work_done(phba);
 509
 510                 /* If there is alot of slow ring work, like during link up
 511                  * check_work_wait_done() may cause this thread to not give
 512                  * up the CPU for very long periods of time. This may cause
 513                  * soft lockups or other problems. To avoid these situations
 514                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 515                  * consecutive iterations.
 516                  */
 517                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 518                         phba->work_found = 0;
 519                         schedule();
 520                 }
 521         }
 522         spin_lock_irq(&phba->hbalock);
 523         phba->work_wait = NULL;
 524         spin_unlock_irq(&phba->hbalock);
 525         return 0;
 526 }
 527
 528 /*
 529  * This is only called to handle FC worker events. Since this a rare
 530  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 531  * embedding it in the IOCB.
 532  */
 533 int
 534 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 535                       uint32_t evt)
 536 {
 537         struct lpfc_work_evt  *evtp;
 538         unsigned long flags;
 539
 540         /*
 541          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 542          * be queued to worker thread for processing
 543          */
 544         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 545         if (!evtp)
 546                 return 0;
 547
 548         evtp->evt_arg1  = arg1;
 549         evtp->evt_arg2  = arg2;
 550         evtp->evt       = evt;
 551
 552         spin_lock_irqsave(&phba->hbalock, flags);
 553         list_add_tail(&evtp->evt_listp, &phba->work_list);
 554         if (phba->work_wait)
 555                 lpfc_worker_wake_up(phba);
 556         spin_unlock_irqrestore(&phba->hbalock, flags);
 557
 558         return 1;
 559 }
 560
 561 void
 562 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 563 {
 564         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 565         struct lpfc_hba  *phba = vport->phba;
 566         struct lpfc_nodelist *ndlp, *next_ndlp;
 567         int  rc;
 568
 569         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 570                 if (!NLP_CHK_NODE_ACT(ndlp))
 571                         continue;
 572                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 573                         continue;
 574                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 575                         ((vport->port_type == LPFC_NPIV_PORT) &&
 576                         (ndlp->nlp_DID == NameServer_DID)))
 577                         lpfc_unreg_rpi(vport, ndlp);
 578
 579                 /* Leave Fabric nodes alone on link down */
 580                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 581                         continue;
 582                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 583                                              remove
 584                                              ? NLP_EVT_DEVICE_RM
 585                                              : NLP_EVT_DEVICE_RECOVERY);
 586         }
 587         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 588                 lpfc_mbx_unreg_vpi(vport);
 589                 spin_lock_irq(shost->host_lock);
 590                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 591                 spin_unlock_irq(shost->host_lock);
 592         }
 593 }
 594
 595 void
 596 lpfc_port_link_failure(struct lpfc_vport *vport)
 597 {
 598         /* Cleanup any outstanding RSCN activity */
 599         lpfc_els_flush_rscn(vport);
 600
 601         /* Cleanup any outstanding ELS commands */
 602         lpfc_els_flush_cmd(vport);
 603
 604         lpfc_cleanup_rpis(vport, 0);
 605
 606         /* Turn off discovery timer if its running */
 607         lpfc_can_disctmo(vport);
 608 }
 609
 610 static void
 611 lpfc_linkdown_port(struct lpfc_vport *vport)
 612 {
 613         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 614
 615         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 616
 617         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 618                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 619                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 620
 621         lpfc_port_link_failure(vport);
 622
 623 }
 624
 625 int
 626 lpfc_linkdown(struct lpfc_hba *phba)
 627 {
 628         struct lpfc_vport *vport = phba->pport;
 629         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 630         struct lpfc_vport **vports;
 631         LPFC_MBOXQ_t          *mb;
 632         int i;
 633
 634         if (phba->link_state == LPFC_LINK_DOWN)
 635                 return 0;
 636         spin_lock_irq(&phba->hbalock);
 637         if (phba->link_state > LPFC_LINK_DOWN) {
 638                 phba->link_state = LPFC_LINK_DOWN;
 639                 phba->pport->fc_flag &= ~FC_LBIT;
 640         }
 641         spin_unlock_irq(&phba->hbalock);
 642         vports = lpfc_create_vport_work_array(phba);
 643         if (vports != NULL)
 644                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
 645                         /* Issue a LINK DOWN event to all nodes */
 646                         lpfc_linkdown_port(vports[i]);
 647                 }
 648         lpfc_destroy_vport_work_array(phba, vports);
 649         /* Clean up any firmware default rpi's */
 650         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 651         if (mb) {
 652                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 653                 mb->vport = vport;
 654                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 655                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 656                     == MBX_NOT_FINISHED) {
 657                         mempool_free(mb, phba->mbox_mem_pool);
 658                 }
 659         }
 660
 661         /* Setup myDID for link up if we are in pt2pt mode */
 662         if (phba->pport->fc_flag & FC_PT2PT) {
 663                 phba->pport->fc_myDID = 0;
 664                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 665                 if (mb) {
 666                         lpfc_config_link(phba, mb);
 667                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 668                         mb->vport = vport;
 669                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 670                             == MBX_NOT_FINISHED) {
 671                                 mempool_free(mb, phba->mbox_mem_pool);
 672                         }
 673                 }
 674                 spin_lock_irq(shost->host_lock);
 675                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 676                 spin_unlock_irq(shost->host_lock);
 677         }
 678
 679         return 0;
 680 }
 681
 682 static void
 683 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 684 {
 685         struct lpfc_nodelist *ndlp;
 686
 687         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 688                 if (!NLP_CHK_NODE_ACT(ndlp))
 689                         continue;
 690                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 691                         continue;
 692                 if (ndlp->nlp_type & NLP_FABRIC) {
 693                         /* On Linkup its safe to clean up the ndlp
 694                          * from Fabric connections.
 695                          */
 696                         if (ndlp->nlp_DID != Fabric_DID)
 697                                 lpfc_unreg_rpi(vport, ndlp);
 698                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 699                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 700                         /* Fail outstanding IO now since device is
 701                          * marked for PLOGI.
 702                          */
 703                         lpfc_unreg_rpi(vport, ndlp);
 704                 }
 705         }
 706 }
 707
 708 static void
 709 lpfc_linkup_port(struct lpfc_vport *vport)
 710 {
 711         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 712         struct lpfc_hba  *phba = vport->phba;
 713
 714         if ((vport->load_flag & FC_UNLOADING) != 0)
 715                 return;
 716
 717         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 718                 "Link Up:         top:x%x speed:x%x flg:x%x",
 719                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 720
 721         /* If NPIV is not enabled, only bring the physical port up */
 722         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 723                 (vport != phba->pport))
 724                 return;
 725
 726         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 727
 728         spin_lock_irq(shost->host_lock);
 729         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 730                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 731         vport->fc_flag |= FC_NDISC_ACTIVE;
 732         vport->fc_ns_retry = 0;
 733         spin_unlock_irq(shost->host_lock);
 734
 735         if (vport->fc_flag & FC_LBIT)
 736                 lpfc_linkup_cleanup_nodes(vport);
 737
 738 }
 739
 740 static int
 741 lpfc_linkup(struct lpfc_hba *phba)
 742 {
 743         struct lpfc_vport **vports;
 744         int i;
 745
 746         phba->link_state = LPFC_LINK_UP;
 747
 748         /* Unblock fabric iocbs if they are blocked */
 749         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 750         del_timer_sync(&phba->fabric_block_timer);
 751
 752         vports = lpfc_create_vport_work_array(phba);
 753         if (vports != NULL)
 754                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
 755                         lpfc_linkup_port(vports[i]);
 756         lpfc_destroy_vport_work_array(phba, vports);
 757         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 758                 lpfc_issue_clear_la(phba, phba->pport);
 759
 760         return 0;
 761 }
 762
 763 /*
 764  * This routine handles processing a CLEAR_LA mailbox
 765  * command upon completion. It is setup in the LPFC_MBOXQ
 766  * as the completion routine when the command is
 767  * handed off to the SLI layer.
 768  */
 769 static void
 770 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 771 {
 772         struct lpfc_vport *vport = pmb->vport;
 773         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 774         struct lpfc_sli   *psli = &phba->sli;
 775         MAILBOX_t *mb = &pmb->mb;
 776         uint32_t control;
 777
 778         /* Since we don't do discovery right now, turn these off here */
 779         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 780         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 781         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 782
 783         /* Check for error */
 784         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 785                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 786                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 787                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 788                                  "state x%x\n",
 789                                  mb->mbxStatus, vport->port_state);
 790                 phba->link_state = LPFC_HBA_ERROR;
 791                 goto out;
 792         }
 793
 794         if (vport->port_type == LPFC_PHYSICAL_PORT)
 795                 phba->link_state = LPFC_HBA_READY;
 796
 797         spin_lock_irq(&phba->hbalock);
 798         psli->sli_flag |= LPFC_PROCESS_LA;
 799         control = readl(phba->HCregaddr);
 800         control |= HC_LAINT_ENA;
 801         writel(control, phba->HCregaddr);
 802         readl(phba->HCregaddr); /* flush */
 803         spin_unlock_irq(&phba->hbalock);
 804         mempool_free(pmb, phba->mbox_mem_pool);
 805         return;
 806
 807 out:
 808         /* Device Discovery completes */
 809         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 810                          "0225 Device Discovery completes\n");
 811         mempool_free(pmb, phba->mbox_mem_pool);
 812
 813         spin_lock_irq(shost->host_lock);
 814         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
 815         spin_unlock_irq(shost->host_lock);
 816
 817         lpfc_can_disctmo(vport);
 818
 819         /* turn on Link Attention interrupts */
 820
 821         spin_lock_irq(&phba->hbalock);
 822         psli->sli_flag |= LPFC_PROCESS_LA;
 823         control = readl(phba->HCregaddr);
 824         control |= HC_LAINT_ENA;
 825         writel(control, phba->HCregaddr);
 826         readl(phba->HCregaddr); /* flush */
 827         spin_unlock_irq(&phba->hbalock);
 828
 829         return;
 830 }
 831
 832
 833 static void
 834 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 835 {
 836         struct lpfc_vport *vport = pmb->vport;
 837
 838         if (pmb->mb.mbxStatus)
 839                 goto out;
 840
 841         mempool_free(pmb, phba->mbox_mem_pool);
 842
 843         if (phba->fc_topology == TOPOLOGY_LOOP &&
 844             vport->fc_flag & FC_PUBLIC_LOOP &&
 845             !(vport->fc_flag & FC_LBIT)) {
 846                         /* Need to wait for FAN - use discovery timer
 847                          * for timeout.  port_state is identically
 848                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 849                          */
 850                         lpfc_set_disctmo(vport);
 851                         return;
 852         }
 853
 854         /* Start discovery by sending a FLOGI. port_state is identically
 855          * LPFC_FLOGI while waiting for FLOGI cmpl
 856          */
 857         if (vport->port_state != LPFC_FLOGI) {
 858                 lpfc_initial_flogi(vport);
 859         }
 860         return;
 861
 862 out:
 863         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 864                          "0306 CONFIG_LINK mbxStatus error x%x "
 865                          "HBA state x%x\n",
 866                          pmb->mb.mbxStatus, vport->port_state);
 867         mempool_free(pmb, phba->mbox_mem_pool);
 868
 869         lpfc_linkdown(phba);
 870
 871         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 872                          "0200 CONFIG_LINK bad hba state x%x\n",
 873                          vport->port_state);
 874
 875         lpfc_issue_clear_la(phba, vport);
 876         return;
 877 }
 878
 879 static void
 880 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 881 {
 882         MAILBOX_t *mb = &pmb->mb;
 883         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 884         struct lpfc_vport  *vport = pmb->vport;
 885
 886
 887         /* Check for error */
 888         if (mb->mbxStatus) {
 889                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 890                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 891                                  "0319 READ_SPARAM mbxStatus error x%x "
 892                                  "hba state x%x>\n",
 893                                  mb->mbxStatus, vport->port_state);
 894                 lpfc_linkdown(phba);
 895                 goto out;
 896         }
 897
 898         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 899                sizeof (struct serv_parm));
 900         if (phba->cfg_soft_wwnn)
 901                 u64_to_wwn(phba->cfg_soft_wwnn,
 902                            vport->fc_sparam.nodeName.u.wwn);
 903         if (phba->cfg_soft_wwpn)
 904                 u64_to_wwn(phba->cfg_soft_wwpn,
 905                            vport->fc_sparam.portName.u.wwn);
 906         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 907                sizeof(vport->fc_nodename));
 908         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 909                sizeof(vport->fc_portname));
 910         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 911                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 912                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 913         }
 914
 915         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 916         kfree(mp);
 917         mempool_free(pmb, phba->mbox_mem_pool);
 918         return;
 919
 920 out:
 921         pmb->context1 = NULL;
 922         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 923         kfree(mp);
 924         lpfc_issue_clear_la(phba, vport);
 925         mempool_free(pmb, phba->mbox_mem_pool);
 926         return;
 927 }
 928
 929 static void
 930 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 931 {
 932         struct lpfc_vport *vport = phba->pport;
 933         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 934         int i;
 935         struct lpfc_dmabuf *mp;
 936         int rc;
 937
 938         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 939         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 940
 941         spin_lock_irq(&phba->hbalock);
 942         switch (la->UlnkSpeed) {
 943         case LA_1GHZ_LINK:
 944                 phba->fc_linkspeed = LA_1GHZ_LINK;
 945                 break;
 946         case LA_2GHZ_LINK:
 947                 phba->fc_linkspeed = LA_2GHZ_LINK;
 948                 break;
 949         case LA_4GHZ_LINK:
 950                 phba->fc_linkspeed = LA_4GHZ_LINK;
 951                 break;
 952         case LA_8GHZ_LINK:
 953                 phba->fc_linkspeed = LA_8GHZ_LINK;
 954                 break;
 955         default:
 956                 phba->fc_linkspeed = LA_UNKNW_LINK;
 957                 break;
 958         }
 959
 960         phba->fc_topology = la->topology;
 961         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 962
 963         if (phba->fc_topology == TOPOLOGY_LOOP) {
 964                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 965
 966                                 /* Get Loop Map information */
 967                 if (la->il)
 968                         vport->fc_flag |= FC_LBIT;
 969
 970                 vport->fc_myDID = la->granted_AL_PA;
 971                 i = la->un.lilpBde64.tus.f.bdeSize;
 972
 973                 if (i == 0) {
 974                         phba->alpa_map[0] = 0;
 975                 } else {
 976                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
 977                                 int numalpa, j, k;
 978                                 union {
 979                                         uint8_t pamap[16];
 980                                         struct {
 981                                                 uint32_t wd1;
 982                                                 uint32_t wd2;
 983                                                 uint32_t wd3;
 984                                                 uint32_t wd4;
 985                                         } pa;
 986                                 } un;
 987                                 numalpa = phba->alpa_map[0];
 988                                 j = 0;
 989                                 while (j < numalpa) {
 990                                         memset(un.pamap, 0, 16);
 991                                         for (k = 1; j < numalpa; k++) {
 992                                                 un.pamap[k - 1] =
 993                                                         phba->alpa_map[j + 1];
 994                                                 j++;
 995                                                 if (k == 16)
 996                                                         break;
 997                                         }
 998                                         /* Link Up Event ALPA map */
 999                                         lpfc_printf_log(phba,
1000                                                         KERN_WARNING,
1001                                                         LOG_LINK_EVENT,
1002                                                         "1304 Link Up Event "
1003                                                         "ALPA map Data: x%x "
1004                                                         "x%x x%x x%x\n",
1005                                                         un.pa.wd1, un.pa.wd2,
1006                                                         un.pa.wd3, un.pa.wd4);
1007                                 }
1008                         }
1009                 }
1010         } else {
1011                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1012                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1013                            (phba->sli_rev == 3))
1014                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1015                 }
1016                 vport->fc_myDID = phba->fc_pref_DID;
1017                 vport->fc_flag |= FC_LBIT;
1018         }
1019         spin_unlock_irq(&phba->hbalock);
1020
1021         lpfc_linkup(phba);
1022         if (sparam_mbox) {
1023                 lpfc_read_sparam(phba, sparam_mbox, 0);
1024                 sparam_mbox->vport = vport;
1025                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1026                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1027                 if (rc == MBX_NOT_FINISHED) {
1028                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1029                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1030                         kfree(mp);
1031                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1032                         if (cfglink_mbox)
1033                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1034                         goto out;
1035                 }
1036         }
1037
1038         if (cfglink_mbox) {
1039                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1040                 lpfc_config_link(phba, cfglink_mbox);
1041                 cfglink_mbox->vport = vport;
1042                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1043                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1044                 if (rc != MBX_NOT_FINISHED)
1045                         return;
1046                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1047         }
1048 out:
1049         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1050         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1051                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1052                          vport->port_state, sparam_mbox, cfglink_mbox);
1053         lpfc_issue_clear_la(phba, vport);
1054         return;
1055 }
1056
1057 static void
1058 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1059 {
1060         uint32_t control;
1061         struct lpfc_sli *psli = &phba->sli;
1062
1063         lpfc_linkdown(phba);
1064
1065         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1066         spin_lock_irq(&phba->hbalock);
1067         psli->sli_flag |= LPFC_PROCESS_LA;
1068         control = readl(phba->HCregaddr);
1069         control |= HC_LAINT_ENA;
1070         writel(control, phba->HCregaddr);
1071         readl(phba->HCregaddr); /* flush */
1072         spin_unlock_irq(&phba->hbalock);
1073 }
1074
1075 /*
1076  * This routine handles processing a READ_LA mailbox
1077  * command upon completion. It is setup in the LPFC_MBOXQ
1078  * as the completion routine when the command is
1079  * handed off to the SLI layer.
1080  */
1081 void
1082 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1083 {
1084         struct lpfc_vport *vport = pmb->vport;
1085         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1086         READ_LA_VAR *la;
1087         MAILBOX_t *mb = &pmb->mb;
1088         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1089
1090         /* Check for error */
1091         if (mb->mbxStatus) {
1092                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1093                                 "1307 READ_LA mbox error x%x state x%x\n",
1094                                 mb->mbxStatus, vport->port_state);
1095                 lpfc_mbx_issue_link_down(phba);
1096                 phba->link_state = LPFC_HBA_ERROR;
1097                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1098         }
1099
1100         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1101
1102         memcpy(&phba->alpa_map[0], mp->virt, 128);
1103
1104         spin_lock_irq(shost->host_lock);
1105         if (la->pb)
1106                 vport->fc_flag |= FC_BYPASSED_MODE;
1107         else
1108                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1109         spin_unlock_irq(shost->host_lock);
1110
1111         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1112             (phba->fc_eventTag == la->eventTag)) {
1113                 phba->fc_stat.LinkMultiEvent++;
1114                 if (la->attType == AT_LINK_UP)
1115                         if (phba->fc_eventTag != 0)
1116                                 lpfc_linkdown(phba);
1117         }
1118
1119         phba->fc_eventTag = la->eventTag;
1120
1121         if (la->attType == AT_LINK_UP) {
1122                 phba->fc_stat.LinkUp++;
1123                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1124                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1125                                         "1306 Link Up Event in loop back mode "
1126                                         "x%x received Data: x%x x%x x%x x%x\n",
1127                                         la->eventTag, phba->fc_eventTag,
1128                                         la->granted_AL_PA, la->UlnkSpeed,
1129                                         phba->alpa_map[0]);
1130                 } else {
1131                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1132                                         "1303 Link Up Event x%x received "
1133                                         "Data: x%x x%x x%x x%x\n",
1134                                         la->eventTag, phba->fc_eventTag,
1135                                         la->granted_AL_PA, la->UlnkSpeed,
1136                                         phba->alpa_map[0]);
1137                 }
1138                 lpfc_mbx_process_link_up(phba, la);
1139         } else {
1140                 phba->fc_stat.LinkDown++;
1141                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1142                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1143                                 "1308 Link Down Event in loop back mode "
1144                                 "x%x received "
1145                                 "Data: x%x x%x x%x\n",
1146                                 la->eventTag, phba->fc_eventTag,
1147                                 phba->pport->port_state, vport->fc_flag);
1148                 }
1149                 else {
1150                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1151                                 "1305 Link Down Event x%x received "
1152                                 "Data: x%x x%x x%x\n",
1153                                 la->eventTag, phba->fc_eventTag,
1154                                 phba->pport->port_state, vport->fc_flag);
1155                 }
1156                 lpfc_mbx_issue_link_down(phba);
1157         }
1158
1159 lpfc_mbx_cmpl_read_la_free_mbuf:
1160         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1161         kfree(mp);
1162         mempool_free(pmb, phba->mbox_mem_pool);
1163         return;
1164 }
1165
1166 /*
1167  * This routine handles processing a REG_LOGIN mailbox
1168  * command upon completion. It is setup in the LPFC_MBOXQ
1169  * as the completion routine when the command is
1170  * handed off to the SLI layer.
1171  */
1172 void
1173 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1174 {
1175         struct lpfc_vport  *vport = pmb->vport;
1176         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1177         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1178
1179         pmb->context1 = NULL;
1180
1181         /* Good status, call state machine */
1182         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1183         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1184         kfree(mp);
1185         mempool_free(pmb, phba->mbox_mem_pool);
1186         /* decrement the node reference count held for this callback
1187          * function.
1188          */
1189         lpfc_nlp_put(ndlp);
1190
1191         return;
1192 }
1193
1194 static void
1195 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1196 {
1197         MAILBOX_t *mb = &pmb->mb;
1198         struct lpfc_vport *vport = pmb->vport;
1199         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1200
1201         switch (mb->mbxStatus) {
1202         case 0x0011:
1203         case 0x0020:
1204         case 0x9700:
1205                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1206                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1207                                  mb->mbxStatus);
1208                 break;
1209         }
1210         vport->unreg_vpi_cmpl = VPORT_OK;
1211         mempool_free(pmb, phba->mbox_mem_pool);
1212         /*
1213          * This shost reference might have been taken at the beginning of
1214          * lpfc_vport_delete()
1215          */
1216         if (vport->load_flag & FC_UNLOADING)
1217                 scsi_host_put(shost);
1218 }
1219
1220 void
1221 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1222 {
1223         struct lpfc_hba  *phba = vport->phba;
1224         LPFC_MBOXQ_t *mbox;
1225         int rc;
1226
1227         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1228         if (!mbox)
1229                 return;
1230
1231         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1232         mbox->vport = vport;
1233         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1234         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1235         if (rc == MBX_NOT_FINISHED) {
1236                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1237                                  "1800 Could not issue unreg_vpi\n");
1238                 mempool_free(mbox, phba->mbox_mem_pool);
1239                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1240         }
1241 }
1242
1243 static void
1244 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1245 {
1246         struct lpfc_vport *vport = pmb->vport;
1247         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1248         MAILBOX_t *mb = &pmb->mb;
1249
1250         switch (mb->mbxStatus) {
1251         case 0x0011:
1252         case 0x9601:
1253         case 0x9602:
1254                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1255                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1256                                  mb->mbxStatus);
1257                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1258                 spin_lock_irq(shost->host_lock);
1259                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1260                 spin_unlock_irq(shost->host_lock);
1261                 vport->fc_myDID = 0;
1262                 goto out;
1263         }
1264
1265         vport->num_disc_nodes = 0;
1266         /* go thru NPR list and issue ELS PLOGIs */
1267         if (vport->fc_npr_cnt)
1268                 lpfc_els_disc_plogi(vport);
1269
1270         if (!vport->num_disc_nodes) {
1271                 spin_lock_irq(shost->host_lock);
1272                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1273                 spin_unlock_irq(shost->host_lock);
1274                 lpfc_can_disctmo(vport);
1275         }
1276         vport->port_state = LPFC_VPORT_READY;
1277
1278 out:
1279         mempool_free(pmb, phba->mbox_mem_pool);
1280         return;
1281 }
1282
1283 /*
1284  * This routine handles processing a Fabric REG_LOGIN mailbox
1285  * command upon completion. It is setup in the LPFC_MBOXQ
1286  * as the completion routine when the command is
1287  * handed off to the SLI layer.
1288  */
1289 void
1290 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1291 {
1292         struct lpfc_vport *vport = pmb->vport;
1293         MAILBOX_t *mb = &pmb->mb;
1294         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1295         struct lpfc_nodelist *ndlp;
1296         struct lpfc_vport **vports;
1297         int i;
1298
1299         ndlp = (struct lpfc_nodelist *) pmb->context2;
1300         pmb->context1 = NULL;
1301         pmb->context2 = NULL;
1302         if (mb->mbxStatus) {
1303                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1304                 kfree(mp);
1305                 mempool_free(pmb, phba->mbox_mem_pool);
1306
1307                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1308                         /* FLOGI failed, use loop map to make discovery list */
1309                         lpfc_disc_list_loopmap(vport);
1310
1311                         /* Start discovery */
1312                         lpfc_disc_start(vport);
1313                         /* Decrement the reference count to ndlp after the
1314                          * reference to the ndlp are done.
1315                          */
1316                         lpfc_nlp_put(ndlp);
1317                         return;
1318                 }
1319
1320                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1321                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1322                                  "0258 Register Fabric login error: 0x%x\n",
1323                                  mb->mbxStatus);
1324                 /* Decrement the reference count to ndlp after the reference
1325                  * to the ndlp are done.
1326                  */
1327                 lpfc_nlp_put(ndlp);
1328                 return;
1329         }
1330
1331         ndlp->nlp_rpi = mb->un.varWords[0];
1332         ndlp->nlp_type |= NLP_FABRIC;
1333         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1334
1335         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1336                 vports = lpfc_create_vport_work_array(phba);
1337                 if (vports != NULL)
1338                         for(i = 0;
1339                             i <= phba->max_vpi && vports[i] != NULL;
1340                             i++) {
1341                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1342                                         continue;
1343                                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1344                                         lpfc_vport_set_state(vports[i],
1345                                                         FC_VPORT_LINKDOWN);
1346                                         continue;
1347                                 }
1348                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1349                                         lpfc_initial_fdisc(vports[i]);
1350                                 else {
1351                                         lpfc_vport_set_state(vports[i],
1352                                                 FC_VPORT_NO_FABRIC_SUPP);
1353                                         lpfc_printf_vlog(vport, KERN_ERR,
1354                                                          LOG_ELS,
1355                                                         "0259 No NPIV "
1356                                                         "Fabric support\n");
1357                                 }
1358                         }
1359                 lpfc_destroy_vport_work_array(phba, vports);
1360                 lpfc_do_scr_ns_plogi(phba, vport);
1361         }
1362
1363         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1364         kfree(mp);
1365         mempool_free(pmb, phba->mbox_mem_pool);
1366
1367         /* Drop the reference count from the mbox at the end after
1368          * all the current reference to the ndlp have been done.
1369          */
1370         lpfc_nlp_put(ndlp);
1371         return;
1372 }
1373
1374 /*
1375  * This routine handles processing a NameServer REG_LOGIN mailbox
1376  * command upon completion. It is setup in the LPFC_MBOXQ
1377  * as the completion routine when the command is
1378  * handed off to the SLI layer.
1379  */
1380 void
1381 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1382 {
1383         MAILBOX_t *mb = &pmb->mb;
1384         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1385         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1386         struct lpfc_vport *vport = pmb->vport;
1387
1388         if (mb->mbxStatus) {
1389 out:
1390                 /* decrement the node reference count held for this
1391                  * callback function.
1392                  */
1393                 lpfc_nlp_put(ndlp);
1394                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1395                 kfree(mp);
1396                 mempool_free(pmb, phba->mbox_mem_pool);
1397
1398                 /* If no other thread is using the ndlp, free it */
1399                 lpfc_nlp_not_used(ndlp);
1400
1401                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1402                         /*
1403                          * RegLogin failed, use loop map to make discovery
1404                          * list
1405                          */
1406                         lpfc_disc_list_loopmap(vport);
1407
1408                         /* Start discovery */
1409                         lpfc_disc_start(vport);
1410                         return;
1411                 }
1412                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1413                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1414                                  "0260 Register NameServer error: 0x%x\n",
1415                                  mb->mbxStatus);
1416                 return;
1417         }
1418
1419         pmb->context1 = NULL;
1420
1421         ndlp->nlp_rpi = mb->un.varWords[0];
1422         ndlp->nlp_type |= NLP_FABRIC;
1423         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1424
1425         if (vport->port_state < LPFC_VPORT_READY) {
1426                 /* Link up discovery requires Fabric registration. */
1427                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1428                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1429                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1430                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1431                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1432
1433                 /* Issue SCR just before NameServer GID_FT Query */
1434                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1435         }
1436
1437         vport->fc_ns_retry = 0;
1438         /* Good status, issue CT Request to NameServer */
1439         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1440                 /* Cannot issue NameServer Query, so finish up discovery */
1441                 goto out;
1442         }
1443
1444         /* decrement the node reference count held for this
1445          * callback function.
1446          */
1447         lpfc_nlp_put(ndlp);
1448         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1449         kfree(mp);
1450         mempool_free(pmb, phba->mbox_mem_pool);
1451
1452         return;
1453 }
1454
1455 static void
1456 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1457 {
1458         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1459         struct fc_rport  *rport;
1460         struct lpfc_rport_data *rdata;
1461         struct fc_rport_identifiers rport_ids;
1462         struct lpfc_hba  *phba = vport->phba;
1463
1464         /* Remote port has reappeared. Re-register w/ FC transport */
1465         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1466         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1467         rport_ids.port_id = ndlp->nlp_DID;
1468         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1469
1470         /*
1471          * We leave our node pointer in rport->dd_data when we unregister a
1472          * FCP target port.  But fc_remote_port_add zeros the space to which
1473          * rport->dd_data points.  So, if we're reusing a previously
1474          * registered port, drop the reference that we took the last time we
1475          * registered the port.
1476          */
1477         if (ndlp->rport && ndlp->rport->dd_data &&
1478             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1479                 lpfc_nlp_put(ndlp);
1480
1481         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1482                 "rport add:       did:x%x flg:x%x type x%x",
1483                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1484
1485         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1486         if (!rport || !get_device(&rport->dev)) {
1487                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1488                            "Warning: fc_remote_port_add failed\n");
1489                 return;
1490         }
1491
1492         /* initialize static port data */
1493         rport->maxframe_size = ndlp->nlp_maxframe;
1494         rport->supported_classes = ndlp->nlp_class_sup;
1495         rdata = rport->dd_data;
1496         rdata->pnode = lpfc_nlp_get(ndlp);
1497
1498         if (ndlp->nlp_type & NLP_FCP_TARGET)
1499                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1500         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1501                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1502
1503
1504         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1505                 fc_remote_port_rolechg(rport, rport_ids.roles);
1506
1507         if ((rport->scsi_target_id != -1) &&
1508             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1509                 ndlp->nlp_sid = rport->scsi_target_id;
1510         }
1511         return;
1512 }
1513
1514 static void
1515 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1516 {
1517         struct fc_rport *rport = ndlp->rport;
1518
1519         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1520                 "rport delete:    did:x%x flg:x%x type x%x",
1521                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1522
1523         fc_remote_port_delete(rport);
1524
1525         return;
1526 }
1527
1528 static void
1529 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1530 {
1531         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532
1533         spin_lock_irq(shost->host_lock);
1534         switch (state) {
1535         case NLP_STE_UNUSED_NODE:
1536                 vport->fc_unused_cnt += count;
1537                 break;
1538         case NLP_STE_PLOGI_ISSUE:
1539                 vport->fc_plogi_cnt += count;
1540                 break;
1541         case NLP_STE_ADISC_ISSUE:
1542                 vport->fc_adisc_cnt += count;
1543                 break;
1544         case NLP_STE_REG_LOGIN_ISSUE:
1545                 vport->fc_reglogin_cnt += count;
1546                 break;
1547         case NLP_STE_PRLI_ISSUE:
1548                 vport->fc_prli_cnt += count;
1549                 break;
1550         case NLP_STE_UNMAPPED_NODE:
1551                 vport->fc_unmap_cnt += count;
1552                 break;
1553         case NLP_STE_MAPPED_NODE:
1554                 vport->fc_map_cnt += count;
1555                 break;
1556         case NLP_STE_NPR_NODE:
1557                 vport->fc_npr_cnt += count;
1558                 break;
1559         }
1560         spin_unlock_irq(shost->host_lock);
1561 }
1562
1563 static void
1564 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1565                        int old_state, int new_state)
1566 {
1567         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568
1569         if (new_state == NLP_STE_UNMAPPED_NODE) {
1570                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1571                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1572                 ndlp->nlp_type |= NLP_FC_NODE;
1573         }
1574         if (new_state == NLP_STE_MAPPED_NODE)
1575                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1576         if (new_state == NLP_STE_NPR_NODE)
1577                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1578
1579         /* Transport interface */
1580         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1581                             old_state == NLP_STE_UNMAPPED_NODE)) {
1582                 vport->phba->nport_event_cnt++;
1583                 lpfc_unregister_remote_port(ndlp);
1584         }
1585
1586         if (new_state ==  NLP_STE_MAPPED_NODE ||
1587             new_state == NLP_STE_UNMAPPED_NODE) {
1588                 vport->phba->nport_event_cnt++;
1589                 /*
1590                  * Tell the fc transport about the port, if we haven't
1591                  * already. If we have, and it's a scsi entity, be
1592                  * sure to unblock any attached scsi devices
1593                  */
1594                 lpfc_register_remote_port(vport, ndlp);
1595         }
1596         /*
1597          * if we added to Mapped list, but the remote port
1598          * registration failed or assigned a target id outside
1599          * our presentable range - move the node to the
1600          * Unmapped List
1601          */
1602         if (new_state == NLP_STE_MAPPED_NODE &&
1603             (!ndlp->rport ||
1604              ndlp->rport->scsi_target_id == -1 ||
1605              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1606                 spin_lock_irq(shost->host_lock);
1607                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1608                 spin_unlock_irq(shost->host_lock);
1609                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1610         }
1611 }
1612
1613 static char *
1614 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1615 {
1616         static char *states[] = {
1617                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1618                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1619                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1620                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1621                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1622                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1623                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1624                 [NLP_STE_NPR_NODE] = "NPR",
1625         };
1626
1627         if (state < NLP_STE_MAX_STATE && states[state])
1628                 strlcpy(buffer, states[state], size);
1629         else
1630                 snprintf(buffer, size, "unknown (%d)", state);
1631         return buffer;
1632 }
1633
1634 void
1635 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1636                    int state)
1637 {
1638         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1639         int  old_state = ndlp->nlp_state;
1640         char name1[16], name2[16];
1641
1642         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1643                          "0904 NPort state transition x%06x, %s -> %s\n",
1644                          ndlp->nlp_DID,
1645                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1646                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1647
1648         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1649                 "node statechg    did:x%x old:%d ste:%d",
1650                 ndlp->nlp_DID, old_state, state);
1651
1652         if (old_state == NLP_STE_NPR_NODE &&
1653             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1654             state != NLP_STE_NPR_NODE)
1655                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1656         if (old_state == NLP_STE_UNMAPPED_NODE) {
1657                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1658                 ndlp->nlp_type &= ~NLP_FC_NODE;
1659         }
1660
1661         if (list_empty(&ndlp->nlp_listp)) {
1662                 spin_lock_irq(shost->host_lock);
1663                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1664                 spin_unlock_irq(shost->host_lock);
1665         } else if (old_state)
1666                 lpfc_nlp_counters(vport, old_state, -1);
1667
1668         ndlp->nlp_state = state;
1669         lpfc_nlp_counters(vport, state, 1);
1670         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1671 }
1672
1673 void
1674 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1675 {
1676         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1677
1678         if (list_empty(&ndlp->nlp_listp)) {
1679                 spin_lock_irq(shost->host_lock);
1680                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1681                 spin_unlock_irq(shost->host_lock);
1682         }
1683 }
1684
1685 void
1686 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1687 {
1688         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1689
1690         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1691                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1692         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1693                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1694         spin_lock_irq(shost->host_lock);
1695         list_del_init(&ndlp->nlp_listp);
1696         spin_unlock_irq(shost->host_lock);
1697         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1698                                 NLP_STE_UNUSED_NODE);
1699 }
1700
1701 static void
1702 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1703 {
1704         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1705                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1706         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1707                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1708         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1709                                 NLP_STE_UNUSED_NODE);
1710 }
1711
1712 struct lpfc_nodelist *
1713 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1714                  int state)
1715 {
1716         struct lpfc_hba *phba = vport->phba;
1717         uint32_t did;
1718         unsigned long flags;
1719
1720         if (!ndlp)
1721                 return NULL;
1722
1723         spin_lock_irqsave(&phba->ndlp_lock, flags);
1724         /* The ndlp should not be in memory free mode */
1725         if (NLP_CHK_FREE_REQ(ndlp)) {
1726                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1727                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1728                                 "0277 lpfc_enable_node: ndlp:x%p "
1729                                 "usgmap:x%x refcnt:%d\n",
1730                                 (void *)ndlp, ndlp->nlp_usg_map,
1731                                 atomic_read(&ndlp->kref.refcount));
1732                 return NULL;
1733         }
1734         /* The ndlp should not already be in active mode */
1735         if (NLP_CHK_NODE_ACT(ndlp)) {
1736                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1737                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1738                                 "0278 lpfc_enable_node: ndlp:x%p "
1739                                 "usgmap:x%x refcnt:%d\n",
1740                                 (void *)ndlp, ndlp->nlp_usg_map,
1741                                 atomic_read(&ndlp->kref.refcount));
1742                 return NULL;
1743         }
1744
1745         /* Keep the original DID */
1746         did = ndlp->nlp_DID;
1747
1748         /* re-initialize ndlp except of ndlp linked list pointer */
1749         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1750                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1751         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1752         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1753         init_timer(&ndlp->nlp_delayfunc);
1754         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1755         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1756         ndlp->nlp_DID = did;
1757         ndlp->vport = vport;
1758         ndlp->nlp_sid = NLP_NO_SID;
1759         /* ndlp management re-initialize */
1760         kref_init(&ndlp->kref);
1761         NLP_INT_NODE_ACT(ndlp);
1762
1763         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1764
1765         if (state != NLP_STE_UNUSED_NODE)
1766                 lpfc_nlp_set_state(vport, ndlp, state);
1767
1768         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1769                 "node enable:       did:x%x",
1770                 ndlp->nlp_DID, 0, 0);
1771         return ndlp;
1772 }
1773
1774 void
1775 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1776 {
1777         /*
1778          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1779          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1780          * the ndlp from the vport. The ndlp marked as UNUSED on the list
1781          * until ALL other outstanding threads have completed. We check
1782          * that the ndlp not already in the UNUSED state before we proceed.
1783          */
1784         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1785                 return;
1786         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1787         lpfc_nlp_put(ndlp);
1788         return;
1789 }
1790
1791 /*
1792  * Start / ReStart rescue timer for Discovery / RSCN handling
1793  */
1794 void
1795 lpfc_set_disctmo(struct lpfc_vport *vport)
1796 {
1797         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1798         struct lpfc_hba  *phba = vport->phba;
1799         uint32_t tmo;
1800
1801         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1802                 /* For FAN, timeout should be greater then edtov */
1803                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1804         } else {
1805                 /* Normal discovery timeout should be > then ELS/CT timeout
1806                  * FC spec states we need 3 * ratov for CT requests
1807                  */
1808                 tmo = ((phba->fc_ratov * 3) + 3);
1809         }
1810
1811
1812         if (!timer_pending(&vport->fc_disctmo)) {
1813                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1814                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1815                         tmo, vport->port_state, vport->fc_flag);
1816         }
1817
1818         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1819         spin_lock_irq(shost->host_lock);
1820         vport->fc_flag |= FC_DISC_TMO;
1821         spin_unlock_irq(shost->host_lock);
1822
1823         /* Start Discovery Timer state <hba_state> */
1824         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1825                          "0247 Start Discovery Timer state x%x "
1826                          "Data: x%x x%lx x%x x%x\n",
1827                          vport->port_state, tmo,
1828                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1829                          vport->fc_adisc_cnt);
1830
1831         return;
1832 }
1833
1834 /*
1835  * Cancel rescue timer for Discovery / RSCN handling
1836  */
1837 int
1838 lpfc_can_disctmo(struct lpfc_vport *vport)
1839 {
1840         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1841         unsigned long iflags;
1842
1843         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1844                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1845                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1846
1847         /* Turn off discovery timer if its running */
1848         if (vport->fc_flag & FC_DISC_TMO) {
1849                 spin_lock_irqsave(shost->host_lock, iflags);
1850                 vport->fc_flag &= ~FC_DISC_TMO;
1851                 spin_unlock_irqrestore(shost->host_lock, iflags);
1852                 del_timer_sync(&vport->fc_disctmo);
1853                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1854                 vport->work_port_events &= ~WORKER_DISC_TMO;
1855                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1856         }
1857
1858         /* Cancel Discovery Timer state <hba_state> */
1859         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1860                          "0248 Cancel Discovery Timer state x%x "
1861                          "Data: x%x x%x x%x\n",
1862                          vport->port_state, vport->fc_flag,
1863                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1864         return 0;
1865 }
1866
1867 /*
1868  * Check specified ring for outstanding IOCB on the SLI queue
1869  * Return true if iocb matches the specified nport
1870  */
1871 int
1872 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1873                     struct lpfc_sli_ring *pring,
1874                     struct lpfc_iocbq *iocb,
1875                     struct lpfc_nodelist *ndlp)
1876 {
1877         struct lpfc_sli *psli = &phba->sli;
1878         IOCB_t *icmd = &iocb->iocb;
1879         struct lpfc_vport    *vport = ndlp->vport;
1880
1881         if (iocb->vport != vport)
1882                 return 0;
1883
1884         if (pring->ringno == LPFC_ELS_RING) {
1885                 switch (icmd->ulpCommand) {
1886                 case CMD_GEN_REQUEST64_CR:
1887                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1888                                 return 1;
1889                 case CMD_ELS_REQUEST64_CR:
1890                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1891                                 return 1;
1892                 case CMD_XMIT_ELS_RSP64_CX:
1893                         if (iocb->context1 == (uint8_t *) ndlp)
1894                                 return 1;
1895                 }
1896         } else if (pring->ringno == psli->extra_ring) {
1897
1898         } else if (pring->ringno == psli->fcp_ring) {
1899                 /* Skip match check if waiting to relogin to FCP target */
1900                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1901                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1902                         return 0;
1903                 }
1904                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1905                         return 1;
1906                 }
1907         } else if (pring->ringno == psli->next_ring) {
1908
1909         }
1910         return 0;
1911 }
1912
1913 /*
1914  * Free resources / clean up outstanding I/Os
1915  * associated with nlp_rpi in the LPFC_NODELIST entry.
1916  */
1917 static int
1918 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1919 {
1920         LIST_HEAD(completions);
1921         struct lpfc_sli *psli;
1922         struct lpfc_sli_ring *pring;
1923         struct lpfc_iocbq *iocb, *next_iocb;
1924         IOCB_t *icmd;
1925         uint32_t rpi, i;
1926
1927         lpfc_fabric_abort_nport(ndlp);
1928
1929         /*
1930          * Everything that matches on txcmplq will be returned
1931          * by firmware with a no rpi error.
1932          */
1933         psli = &phba->sli;
1934         rpi = ndlp->nlp_rpi;
1935         if (rpi) {
1936                 /* Now process each ring */
1937                 for (i = 0; i < psli->num_rings; i++) {
1938                         pring = &psli->ring[i];
1939
1940                         spin_lock_irq(&phba->hbalock);
1941                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1942                                                  list) {
1943                                 /*
1944                                  * Check to see if iocb matches the nport we are
1945                                  * looking for
1946                                  */
1947                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1948                                                          ndlp))) {
1949                                         /* It matches, so deque and call compl
1950                                            with an error */
1951                                         list_move_tail(&iocb->list,
1952                                                        &completions);
1953                                         pring->txq_cnt--;
1954                                 }
1955                         }
1956                         spin_unlock_irq(&phba->hbalock);
1957                 }
1958         }
1959
1960         while (!list_empty(&completions)) {
1961                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1962                 list_del_init(&iocb->list);
1963
1964                 if (!iocb->iocb_cmpl)
1965                         lpfc_sli_release_iocbq(phba, iocb);
1966                 else {
1967                         icmd = &iocb->iocb;
1968                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1969                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1970                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1971                 }
1972         }
1973
1974         return 0;
1975 }
1976
1977 /*
1978  * Free rpi associated with LPFC_NODELIST entry.
1979  * This routine is called from lpfc_freenode(), when we are removing
1980  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1981  * LOGO that completes successfully, and we are waiting to PLOGI back
1982  * to the remote NPort. In addition, it is called after we receive
1983  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1984  * we are waiting to PLOGI back to the remote NPort.
1985  */
1986 int
1987 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1988 {
1989         struct lpfc_hba *phba = vport->phba;
1990         LPFC_MBOXQ_t    *mbox;
1991         int rc;
1992
1993         if (ndlp->nlp_rpi) {
1994                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1995                 if (mbox) {
1996                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1997                         mbox->vport = vport;
1998                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1999                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2000                         if (rc == MBX_NOT_FINISHED)
2001                                 mempool_free(mbox, phba->mbox_mem_pool);
2002                 }
2003                 lpfc_no_rpi(phba, ndlp);
2004                 ndlp->nlp_rpi = 0;
2005                 return 1;
2006         }
2007         return 0;
2008 }
2009
2010 void
2011 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2012 {
2013         struct lpfc_hba  *phba  = vport->phba;
2014         LPFC_MBOXQ_t     *mbox;
2015         int rc;
2016
2017         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2018         if (mbox) {
2019                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2020                 mbox->vport = vport;
2021                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2022                 mbox->context1 = NULL;
2023                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2024                 if (rc == MBX_NOT_FINISHED) {
2025                         mempool_free(mbox, phba->mbox_mem_pool);
2026                 }
2027         }
2028 }
2029
2030 void
2031 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2032 {
2033         struct lpfc_hba  *phba  = vport->phba;
2034         LPFC_MBOXQ_t     *mbox;
2035         int rc;
2036
2037         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2038         if (mbox) {
2039                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2040                 mbox->vport = vport;
2041                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2042                 mbox->context1 = NULL;
2043                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2044                 if (rc == MBX_NOT_FINISHED) {
2045                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2046                                          "1815 Could not issue "
2047                                          "unreg_did (default rpis)\n");
2048                         mempool_free(mbox, phba->mbox_mem_pool);
2049                 }
2050         }
2051 }
2052
2053 /*
2054  * Free resources associated with LPFC_NODELIST entry
2055  * so it can be freed.
2056  */
2057 static int
2058 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2059 {
2060         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2061         struct lpfc_hba  *phba = vport->phba;
2062         LPFC_MBOXQ_t *mb, *nextmb;
2063         struct lpfc_dmabuf *mp;
2064
2065         /* Cleanup node for NPort <nlp_DID> */
2066         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2067                          "0900 Cleanup node for NPort x%x "
2068                          "Data: x%x x%x x%x\n",
2069                          ndlp->nlp_DID, ndlp->nlp_flag,
2070                          ndlp->nlp_state, ndlp->nlp_rpi);
2071         if (NLP_CHK_FREE_REQ(ndlp)) {
2072                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2073                                 "0280 lpfc_cleanup_node: ndlp:x%p "
2074                                 "usgmap:x%x refcnt:%d\n",
2075                                 (void *)ndlp, ndlp->nlp_usg_map,
2076                                 atomic_read(&ndlp->kref.refcount));
2077                 lpfc_dequeue_node(vport, ndlp);
2078         } else {
2079                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2080                                 "0281 lpfc_cleanup_node: ndlp:x%p "
2081                                 "usgmap:x%x refcnt:%d\n",
2082                                 (void *)ndlp, ndlp->nlp_usg_map,
2083                                 atomic_read(&ndlp->kref.refcount));
2084                 lpfc_disable_node(vport, ndlp);
2085         }
2086
2087         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2088         if ((mb = phba->sli.mbox_active)) {
2089                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2090                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2091                         mb->context2 = NULL;
2092                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2093                 }
2094         }
2095
2096         spin_lock_irq(&phba->hbalock);
2097         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2098                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2099                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2100                         mp = (struct lpfc_dmabuf *) (mb->context1);
2101                         if (mp) {
2102                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2103                                 kfree(mp);
2104                         }
2105                         list_del(&mb->list);
2106                         mempool_free(mb, phba->mbox_mem_pool);
2107                         /* We shall not invoke the lpfc_nlp_put to decrement
2108                          * the ndlp reference count as we are in the process
2109                          * of lpfc_nlp_release.
2110                          */
2111                 }
2112         }
2113         spin_unlock_irq(&phba->hbalock);
2114
2115         lpfc_els_abort(phba, ndlp);
2116
2117         spin_lock_irq(shost->host_lock);
2118         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2119         spin_unlock_irq(shost->host_lock);
2120
2121         ndlp->nlp_last_elscmd = 0;
2122         del_timer_sync(&ndlp->nlp_delayfunc);
2123
2124         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
2125                 list_del_init(&ndlp->els_retry_evt.evt_listp);
2126         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
2127                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2128
2129         lpfc_unreg_rpi(vport, ndlp);
2130
2131         return 0;
2132 }
2133
2134 /*
2135  * Check to see if we can free the nlp back to the freelist.
2136  * If we are in the middle of using the nlp in the discovery state
2137  * machine, defer the free till we reach the end of the state machine.
2138  */
2139 static void
2140 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2141 {
2142         struct lpfc_hba  *phba = vport->phba;
2143         struct lpfc_rport_data *rdata;
2144         LPFC_MBOXQ_t *mbox;
2145         int rc;
2146
2147         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2148                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2149         }
2150
2151         if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2152                 /* For this case we need to cleanup the default rpi
2153                  * allocated by the firmware.
2154                  */
2155                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2156                         != NULL) {
2157                         rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2158                             (uint8_t *) &vport->fc_sparam, mbox, 0);
2159                         if (rc) {
2160                                 mempool_free(mbox, phba->mbox_mem_pool);
2161                         }
2162                         else {
2163                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2164                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2165                                 mbox->vport = vport;
2166                                 mbox->context2 = NULL;
2167                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2168                                 if (rc == MBX_NOT_FINISHED) {
2169                                         mempool_free(mbox, phba->mbox_mem_pool);
2170                                 }
2171                         }
2172                 }
2173         }
2174         lpfc_cleanup_node(vport, ndlp);
2175
2176         /*
2177          * We can get here with a non-NULL ndlp->rport because when we
2178          * unregister a rport we don't break the rport/node linkage.  So if we
2179          * do, make sure we don't leaving any dangling pointers behind.
2180          */
2181         if (ndlp->rport) {
2182                 rdata = ndlp->rport->dd_data;
2183                 rdata->pnode = NULL;
2184                 ndlp->rport = NULL;
2185         }
2186 }
2187
2188 static int
2189 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2190               uint32_t did)
2191 {
2192         D_ID mydid, ndlpdid, matchdid;
2193
2194         if (did == Bcast_DID)
2195                 return 0;
2196
2197         /* First check for Direct match */
2198         if (ndlp->nlp_DID == did)
2199                 return 1;
2200
2201         /* Next check for area/domain identically equals 0 match */
2202         mydid.un.word = vport->fc_myDID;
2203         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2204                 return 0;
2205         }
2206
2207         matchdid.un.word = did;
2208         ndlpdid.un.word = ndlp->nlp_DID;
2209         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2210                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2211                     (mydid.un.b.area == matchdid.un.b.area)) {
2212                         if ((ndlpdid.un.b.domain == 0) &&
2213                             (ndlpdid.un.b.area == 0)) {
2214                                 if (ndlpdid.un.b.id)
2215                                         return 1;
2216                         }
2217                         return 0;
2218                 }
2219
2220                 matchdid.un.word = ndlp->nlp_DID;
2221                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2222                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2223                         if ((matchdid.un.b.domain == 0) &&
2224                             (matchdid.un.b.area == 0)) {
2225                                 if (matchdid.un.b.id)
2226                                         return 1;
2227                         }
2228                 }
2229         }
2230         return 0;
2231 }
2232
2233 /* Search for a nodelist entry */
2234 static struct lpfc_nodelist *
2235 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2236 {
2237         struct lpfc_nodelist *ndlp;
2238         uint32_t data1;
2239
2240         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2241                 if (lpfc_matchdid(vport, ndlp, did)) {
2242                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2243                                  ((uint32_t) ndlp->nlp_xri << 16) |
2244                                  ((uint32_t) ndlp->nlp_type << 8) |
2245                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2246                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2247                                          "0929 FIND node DID "
2248                                          "Data: x%p x%x x%x x%x\n",
2249                                          ndlp, ndlp->nlp_DID,
2250                                          ndlp->nlp_flag, data1);
2251                         return ndlp;
2252                 }
2253         }
2254
2255         /* FIND node did <did> NOT FOUND */
2256         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2257                          "0932 FIND node did x%x NOT FOUND.\n", did);
2258         return NULL;
2259 }
2260
2261 struct lpfc_nodelist *
2262 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2263 {
2264         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2265         struct lpfc_nodelist *ndlp;
2266
2267         spin_lock_irq(shost->host_lock);
2268         ndlp = __lpfc_findnode_did(vport, did);
2269         spin_unlock_irq(shost->host_lock);
2270         return ndlp;
2271 }
2272
2273 struct lpfc_nodelist *
2274 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2275 {
2276         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2277         struct lpfc_nodelist *ndlp;
2278
2279         ndlp = lpfc_findnode_did(vport, did);
2280         if (!ndlp) {
2281                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2282                     lpfc_rscn_payload_check(vport, did) == 0)
2283                         return NULL;
2284                 ndlp = (struct lpfc_nodelist *)
2285                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2286                 if (!ndlp)
2287                         return NULL;
2288                 lpfc_nlp_init(vport, ndlp, did);
2289                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2290                 spin_lock_irq(shost->host_lock);
2291                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2292                 spin_unlock_irq(shost->host_lock);
2293                 return ndlp;
2294         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2295                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2296                 if (!ndlp)
2297                         return NULL;
2298                 spin_lock_irq(shost->host_lock);
2299                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2300                 spin_unlock_irq(shost->host_lock);
2301                 return ndlp;
2302         }
2303
2304         if ((vport->fc_flag & FC_RSCN_MODE) &&
2305             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2306                 if (lpfc_rscn_payload_check(vport, did)) {
2307                         /* If we've already recieved a PLOGI from this NPort
2308                          * we don't need to try to discover it again.
2309                          */
2310                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2311                                 return NULL;
2312
2313                         spin_lock_irq(shost->host_lock);
2314                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2315                         spin_unlock_irq(shost->host_lock);
2316
2317                         /* Since this node is marked for discovery,
2318                          * delay timeout is not needed.
2319                          */
2320                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2321                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2322                 } else
2323                         ndlp = NULL;
2324         } else {
2325                 /* If we've already recieved a PLOGI from this NPort,
2326                  * or we are already in the process of discovery on it,
2327                  * we don't need to try to discover it again.
2328                  */
2329                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2330                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2331                     ndlp->nlp_flag & NLP_RCV_PLOGI)
2332                         return NULL;
2333                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2334                 spin_lock_irq(shost->host_lock);
2335                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2336                 spin_unlock_irq(shost->host_lock);
2337         }
2338         return ndlp;
2339 }
2340
2341 /* Build a list of nodes to discover based on the loopmap */
2342 void
2343 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2344 {
2345         struct lpfc_hba  *phba = vport->phba;
2346         int j;
2347         uint32_t alpa, index;
2348
2349         if (!lpfc_is_link_up(phba))
2350                 return;
2351
2352         if (phba->fc_topology != TOPOLOGY_LOOP)
2353                 return;
2354
2355         /* Check for loop map present or not */
2356         if (phba->alpa_map[0]) {
2357                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2358                         alpa = phba->alpa_map[j];
2359                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2360                                 continue;
2361                         lpfc_setup_disc_node(vport, alpa);
2362                 }
2363         } else {
2364                 /* No alpamap, so try all alpa's */
2365                 for (j = 0; j < FC_MAXLOOP; j++) {
2366                         /* If cfg_scan_down is set, start from highest
2367                          * ALPA (0xef) to lowest (0x1).
2368                          */
2369                         if (vport->cfg_scan_down)
2370                                 index = j;
2371                         else
2372                                 index = FC_MAXLOOP - j - 1;
2373                         alpa = lpfcAlpaArray[index];
2374                         if ((vport->fc_myDID & 0xff) == alpa)
2375                                 continue;
2376                         lpfc_setup_disc_node(vport, alpa);
2377                 }
2378         }
2379         return;
2380 }
2381
2382 void
2383 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2384 {
2385         LPFC_MBOXQ_t *mbox;
2386         struct lpfc_sli *psli = &phba->sli;
2387         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2388         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2389         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2390         int  rc;
2391
2392         /*
2393          * if it's not a physical port or if we already send
2394          * clear_la then don't send it.
2395          */
2396         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2397             (vport->port_type != LPFC_PHYSICAL_PORT))
2398                 return;
2399
2400                         /* Link up discovery */
2401         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2402                 phba->link_state = LPFC_CLEAR_LA;
2403                 lpfc_clear_la(phba, mbox);
2404                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2405                 mbox->vport = vport;
2406                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2407                 if (rc == MBX_NOT_FINISHED) {
2408                         mempool_free(mbox, phba->mbox_mem_pool);
2409                         lpfc_disc_flush_list(vport);
2410                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2411                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2412                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2413                         phba->link_state = LPFC_HBA_ERROR;
2414                 }
2415         }
2416 }
2417
2418 /* Reg_vpi to tell firmware to resume normal operations */
2419 void
2420 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2421 {
2422         LPFC_MBOXQ_t *regvpimbox;
2423
2424         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2425         if (regvpimbox) {
2426                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2427                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2428                 regvpimbox->vport = vport;
2429                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2430                                         == MBX_NOT_FINISHED) {
2431                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2432                 }
2433         }
2434 }
2435
2436 /* Start Link up / RSCN discovery on NPR nodes */
2437 void
2438 lpfc_disc_start(struct lpfc_vport *vport)
2439 {
2440         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2441         struct lpfc_hba  *phba = vport->phba;
2442         uint32_t num_sent;
2443         uint32_t clear_la_pending;
2444         int did_changed;
2445
2446         if (!lpfc_is_link_up(phba))
2447                 return;
2448
2449         if (phba->link_state == LPFC_CLEAR_LA)
2450                 clear_la_pending = 1;
2451         else
2452                 clear_la_pending = 0;
2453
2454         if (vport->port_state < LPFC_VPORT_READY)
2455                 vport->port_state = LPFC_DISC_AUTH;
2456
2457         lpfc_set_disctmo(vport);
2458
2459         if (vport->fc_prevDID == vport->fc_myDID)
2460                 did_changed = 0;
2461         else
2462                 did_changed = 1;
2463
2464         vport->fc_prevDID = vport->fc_myDID;
2465         vport->num_disc_nodes = 0;
2466
2467         /* Start Discovery state <hba_state> */
2468         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2469                          "0202 Start Discovery hba state x%x "
2470                          "Data: x%x x%x x%x\n",
2471                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2472                          vport->fc_adisc_cnt);
2473
2474         /* First do ADISCs - if any */
2475         num_sent = lpfc_els_disc_adisc(vport);
2476
2477         if (num_sent)
2478                 return;
2479
2480         /*
2481          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2482          * continue discovery.
2483          */
2484         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2485             !(vport->fc_flag & FC_PT2PT) &&
2486             !(vport->fc_flag & FC_RSCN_MODE)) {
2487                 lpfc_issue_reg_vpi(phba, vport);
2488                 return;
2489         }
2490
2491         /*
2492          * For SLI2, we need to set port_state to READY and continue
2493          * discovery.
2494          */
2495         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2496                 /* If we get here, there is nothing to ADISC */
2497                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2498                         lpfc_issue_clear_la(phba, vport);
2499
2500                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2501                         vport->num_disc_nodes = 0;
2502                         /* go thru NPR nodes and issue ELS PLOGIs */
2503                         if (vport->fc_npr_cnt)
2504                                 lpfc_els_disc_plogi(vport);
2505
2506                         if (!vport->num_disc_nodes) {
2507                                 spin_lock_irq(shost->host_lock);
2508                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2509                                 spin_unlock_irq(shost->host_lock);
2510                                 lpfc_can_disctmo(vport);
2511                         }
2512                 }
2513                 vport->port_state = LPFC_VPORT_READY;
2514         } else {
2515                 /* Next do PLOGIs - if any */
2516                 num_sent = lpfc_els_disc_plogi(vport);
2517
2518                 if (num_sent)
2519                         return;
2520
2521                 if (vport->fc_flag & FC_RSCN_MODE) {
2522                         /* Check to see if more RSCNs came in while we
2523                          * were processing this one.
2524                          */
2525                         if ((vport->fc_rscn_id_cnt == 0) &&
2526                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2527                                 spin_lock_irq(shost->host_lock);
2528                                 vport->fc_flag &= ~FC_RSCN_MODE;
2529                                 spin_unlock_irq(shost->host_lock);
2530                                 lpfc_can_disctmo(vport);
2531                         } else
2532                                 lpfc_els_handle_rscn(vport);
2533                 }
2534         }
2535         return;
2536 }
2537
2538 /*
2539  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2540  *  ring the match the sppecified nodelist.
2541  */
2542 static void
2543 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2544 {
2545         LIST_HEAD(completions);
2546         struct lpfc_sli *psli;
2547         IOCB_t     *icmd;
2548         struct lpfc_iocbq    *iocb, *next_iocb;
2549         struct lpfc_sli_ring *pring;
2550
2551         psli = &phba->sli;
2552         pring = &psli->ring[LPFC_ELS_RING];
2553
2554         /* Error matching iocb on txq or txcmplq
2555          * First check the txq.
2556          */
2557         spin_lock_irq(&phba->hbalock);
2558         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2559                 if (iocb->context1 != ndlp) {
2560                         continue;
2561                 }
2562                 icmd = &iocb->iocb;
2563                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2564                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2565
2566                         list_move_tail(&iocb->list, &completions);
2567                         pring->txq_cnt--;
2568                 }
2569         }
2570
2571         /* Next check the txcmplq */
2572         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2573                 if (iocb->context1 != ndlp) {
2574                         continue;
2575                 }
2576                 icmd = &iocb->iocb;
2577                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2578                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2579                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2580                 }
2581         }
2582         spin_unlock_irq(&phba->hbalock);
2583
2584         while (!list_empty(&completions)) {
2585                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2586                 list_del_init(&iocb->list);
2587
2588                 if (!iocb->iocb_cmpl)
2589                         lpfc_sli_release_iocbq(phba, iocb);
2590                 else {
2591                         icmd = &iocb->iocb;
2592                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2593                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2594                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2595                 }
2596         }
2597 }
2598
2599 static void
2600 lpfc_disc_flush_list(struct lpfc_vport *vport)
2601 {
2602         struct lpfc_nodelist *ndlp, *next_ndlp;
2603         struct lpfc_hba *phba = vport->phba;
2604
2605         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2606                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2607                                          nlp_listp) {
2608                         if (!NLP_CHK_NODE_ACT(ndlp))
2609                                 continue;
2610                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2611                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2612                                 lpfc_free_tx(phba, ndlp);
2613                         }
2614                 }
2615         }
2616 }
2617
2618 void
2619 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2620 {
2621         lpfc_els_flush_rscn(vport);
2622         lpfc_els_flush_cmd(vport);
2623         lpfc_disc_flush_list(vport);
2624 }
2625
2626 /*****************************************************************************/
2627 /*
2628  * NAME:     lpfc_disc_timeout
2629  *
2630  * FUNCTION: Fibre Channel driver discovery timeout routine.
2631  *
2632  * EXECUTION ENVIRONMENT: interrupt only
2633  *
2634  * CALLED FROM:
2635  *      Timer function
2636  *
2637  * RETURNS:
2638  *      none
2639  */
2640 /*****************************************************************************/
2641 void
2642 lpfc_disc_timeout(unsigned long ptr)
2643 {
2644         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2645         struct lpfc_hba   *phba = vport->phba;
2646         unsigned long flags = 0;
2647
2648         if (unlikely(!phba))
2649                 return;
2650
2651         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2652                 spin_lock_irqsave(&vport->work_port_lock, flags);
2653                 vport->work_port_events |= WORKER_DISC_TMO;
2654                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2655
2656                 spin_lock_irqsave(&phba->hbalock, flags);
2657                 if (phba->work_wait)
2658                         lpfc_worker_wake_up(phba);
2659                 spin_unlock_irqrestore(&phba->hbalock, flags);
2660         }
2661         return;
2662 }
2663
2664 static void
2665 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2666 {
2667         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2668         struct lpfc_hba  *phba = vport->phba;
2669         struct lpfc_sli  *psli = &phba->sli;
2670         struct lpfc_nodelist *ndlp, *next_ndlp;
2671         LPFC_MBOXQ_t *initlinkmbox;
2672         int rc, clrlaerr = 0;
2673
2674         if (!(vport->fc_flag & FC_DISC_TMO))
2675                 return;
2676
2677         spin_lock_irq(shost->host_lock);
2678         vport->fc_flag &= ~FC_DISC_TMO;
2679         spin_unlock_irq(shost->host_lock);
2680
2681         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2682                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2683                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2684
2685         switch (vport->port_state) {
2686
2687         case LPFC_LOCAL_CFG_LINK:
2688         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2689          * FAN
2690          */
2691                                 /* FAN timeout */
2692                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2693                                  "0221 FAN timeout\n");
2694                 /* Start discovery by sending FLOGI, clean up old rpis */
2695                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2696                                          nlp_listp) {
2697                         if (!NLP_CHK_NODE_ACT(ndlp))
2698                                 continue;
2699                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2700                                 continue;
2701                         if (ndlp->nlp_type & NLP_FABRIC) {
2702                                 /* Clean up the ndlp on Fabric connections */
2703                                 lpfc_drop_node(vport, ndlp);
2704
2705                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2706                                 /* Fail outstanding IO now since device
2707                                  * is marked for PLOGI.
2708                                  */
2709                                 lpfc_unreg_rpi(vport, ndlp);
2710                         }
2711                 }
2712                 if (vport->port_state != LPFC_FLOGI) {
2713                         lpfc_initial_flogi(vport);
2714                         return;
2715                 }
2716                 break;
2717
2718         case LPFC_FDISC:
2719         case LPFC_FLOGI:
2720         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2721                 /* Initial FLOGI timeout */
2722                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2723                                  "0222 Initial %s timeout\n",
2724                                  vport->vpi ? "FDISC" : "FLOGI");
2725
2726                 /* Assume no Fabric and go on with discovery.
2727                  * Check for outstanding ELS FLOGI to abort.
2728                  */
2729
2730                 /* FLOGI failed, so just use loop map to make discovery list */
2731                 lpfc_disc_list_loopmap(vport);
2732
2733                 /* Start discovery */
2734                 lpfc_disc_start(vport);
2735                 break;
2736
2737         case LPFC_FABRIC_CFG_LINK:
2738         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2739            NameServer login */
2740                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2741                                  "0223 Timeout while waiting for "
2742                                  "NameServer login\n");
2743                 /* Next look for NameServer ndlp */
2744                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2745                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2746                         lpfc_els_abort(phba, ndlp);
2747
2748                 /* ReStart discovery */
2749                 goto restart_disc;
2750
2751         case LPFC_NS_QRY:
2752         /* Check for wait for NameServer Rsp timeout */
2753                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2754                                  "0224 NameServer Query timeout "
2755                                  "Data: x%x x%x\n",
2756                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2757
2758                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2759                         /* Try it one more time */
2760                         vport->fc_ns_retry++;
2761                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2762                                          vport->fc_ns_retry, 0);
2763                         if (rc == 0)
2764                                 break;
2765                 }
2766                 vport->fc_ns_retry = 0;
2767
2768 restart_disc:
2769                 /*
2770                  * Discovery is over.
2771                  * set port_state to PORT_READY if SLI2.
2772                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2773                  */
2774                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2775                         lpfc_issue_reg_vpi(phba, vport);
2776                 else  { /* NPIV Not enabled */
2777                         lpfc_issue_clear_la(phba, vport);
2778                         vport->port_state = LPFC_VPORT_READY;
2779                 }
2780
2781                 /* Setup and issue mailbox INITIALIZE LINK command */
2782                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2783                 if (!initlinkmbox) {
2784                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2785                                          "0206 Device Discovery "
2786                                          "completion error\n");
2787                         phba->link_state = LPFC_HBA_ERROR;
2788                         break;
2789                 }
2790
2791                 lpfc_linkdown(phba);
2792                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2793                                phba->cfg_link_speed);
2794                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2795                 initlinkmbox->vport = vport;
2796                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2797                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2798                 lpfc_set_loopback_flag(phba);
2799                 if (rc == MBX_NOT_FINISHED)
2800                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2801
2802                 break;
2803
2804         case LPFC_DISC_AUTH:
2805         /* Node Authentication timeout */
2806                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2807                                  "0227 Node Authentication timeout\n");
2808                 lpfc_disc_flush_list(vport);
2809
2810                 /*
2811                  * set port_state to PORT_READY if SLI2.
2812                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2813                  */
2814                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2815                         lpfc_issue_reg_vpi(phba, vport);
2816                 else {  /* NPIV Not enabled */
2817                         lpfc_issue_clear_la(phba, vport);
2818                         vport->port_state = LPFC_VPORT_READY;
2819                 }
2820                 break;
2821
2822         case LPFC_VPORT_READY:
2823                 if (vport->fc_flag & FC_RSCN_MODE) {
2824                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2825                                          "0231 RSCN timeout Data: x%x "
2826                                          "x%x\n",
2827                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2828
2829                         /* Cleanup any outstanding ELS commands */
2830                         lpfc_els_flush_cmd(vport);
2831
2832                         lpfc_els_flush_rscn(vport);
2833                         lpfc_disc_flush_list(vport);
2834                 }
2835                 break;
2836
2837         default:
2838                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2839                                  "0229 Unexpected discovery timeout, "
2840                                  "vport State x%x\n", vport->port_state);
2841                 break;
2842         }
2843
2844         switch (phba->link_state) {
2845         case LPFC_CLEAR_LA:
2846                                 /* CLEAR LA timeout */
2847                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2848                                  "0228 CLEAR LA timeout\n");
2849                 clrlaerr = 1;
2850                 break;
2851
2852         case LPFC_LINK_UP:
2853                 lpfc_issue_clear_la(phba, vport);
2854                 /* Drop thru */
2855         case LPFC_LINK_UNKNOWN:
2856         case LPFC_WARM_START:
2857         case LPFC_INIT_START:
2858         case LPFC_INIT_MBX_CMDS:
2859         case LPFC_LINK_DOWN:
2860         case LPFC_HBA_ERROR:
2861                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2862                                  "0230 Unexpected timeout, hba link "
2863                                  "state x%x\n", phba->link_state);
2864                 clrlaerr = 1;
2865                 break;
2866
2867         case LPFC_HBA_READY:
2868                 break;
2869         }
2870
2871         if (clrlaerr) {
2872                 lpfc_disc_flush_list(vport);
2873                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2874                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2875                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2876                 vport->port_state = LPFC_VPORT_READY;
2877         }
2878
2879         return;
2880 }
2881
2882 /*
2883  * This routine handles processing a NameServer REG_LOGIN mailbox
2884  * command upon completion. It is setup in the LPFC_MBOXQ
2885  * as the completion routine when the command is
2886  * handed off to the SLI layer.
2887  */
2888 void
2889 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2890 {
2891         MAILBOX_t *mb = &pmb->mb;
2892         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2893         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2894         struct lpfc_vport    *vport = pmb->vport;
2895
2896         pmb->context1 = NULL;
2897
2898         ndlp->nlp_rpi = mb->un.varWords[0];
2899         ndlp->nlp_type |= NLP_FABRIC;
2900         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2901
2902         /*
2903          * Start issuing Fabric-Device Management Interface (FDMI) command to
2904          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2905          * fdmi-on=2 (supporting RPA/hostnmae)
2906          */
2907
2908         if (vport->cfg_fdmi_on == 1)
2909                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2910         else
2911                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2912
2913         /* decrement the node reference count held for this callback
2914          * function.
2915          */
2916         lpfc_nlp_put(ndlp);
2917         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2918         kfree(mp);
2919         mempool_free(pmb, phba->mbox_mem_pool);
2920
2921         return;
2922 }
2923
2924 static int
2925 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2926 {
2927         uint16_t *rpi = param;
2928
2929         return ndlp->nlp_rpi == *rpi;
2930 }
2931
2932 static int
2933 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2934 {
2935         return memcmp(&ndlp->nlp_portname, param,
2936                       sizeof(ndlp->nlp_portname)) == 0;
2937 }
2938
2939 static struct lpfc_nodelist *
2940 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2941 {
2942         struct lpfc_nodelist *ndlp;
2943
2944         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2945                 if (filter(ndlp, param))
2946                         return ndlp;
2947         }
2948         return NULL;
2949 }
2950
2951 /*
2952  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2953  * returns the node list element pointer else return NULL.
2954  */
2955 struct lpfc_nodelist *
2956 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2957 {
2958         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2959 }
2960
2961 /*
2962  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2963  * returns the node element list pointer else return NULL.
2964  */
2965 struct lpfc_nodelist *
2966 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2967 {
2968         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2969         struct lpfc_nodelist *ndlp;
2970
2971         spin_lock_irq(shost->host_lock);
2972         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2973         spin_unlock_irq(shost->host_lock);
2974         return ndlp;
2975 }
2976
2977 void
2978 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2979               uint32_t did)
2980 {
2981         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2982         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2983         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2984         init_timer(&ndlp->nlp_delayfunc);
2985         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2986         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2987         ndlp->nlp_DID = did;
2988         ndlp->vport = vport;
2989         ndlp->nlp_sid = NLP_NO_SID;
2990         INIT_LIST_HEAD(&ndlp->nlp_listp);
2991         kref_init(&ndlp->kref);
2992         NLP_INT_NODE_ACT(ndlp);
2993
2994         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2995                 "node init:       did:x%x",
2996                 ndlp->nlp_DID, 0, 0);
2997
2998         return;
2999 }
3000
3001 /* This routine releases all resources associated with a specifc NPort's ndlp
3002  * and mempool_free's the nodelist.
3003  */
3004 static void
3005 lpfc_nlp_release(struct kref *kref)
3006 {
3007         struct lpfc_hba *phba;
3008         unsigned long flags;
3009         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3010                                                   kref);
3011
3012         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3013                 "node release:    did:x%x flg:x%x type:x%x",
3014                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3015
3016         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3017                         "0279 lpfc_nlp_release: ndlp:x%p "
3018                         "usgmap:x%x refcnt:%d\n",
3019                         (void *)ndlp, ndlp->nlp_usg_map,
3020                         atomic_read(&ndlp->kref.refcount));
3021
3022         /* remove ndlp from action. */
3023         lpfc_nlp_remove(ndlp->vport, ndlp);
3024
3025         /* clear the ndlp active flag for all release cases */
3026         phba = ndlp->vport->phba;
3027         spin_lock_irqsave(&phba->ndlp_lock, flags);
3028         NLP_CLR_NODE_ACT(ndlp);
3029         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3030
3031         /* free ndlp memory for final ndlp release */
3032         if (NLP_CHK_FREE_REQ(ndlp))
3033                 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3034 }
3035
3036 /* This routine bumps the reference count for a ndlp structure to ensure
3037  * that one discovery thread won't free a ndlp while another discovery thread
3038  * is using it.
3039  */
3040 struct lpfc_nodelist *
3041 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3042 {
3043         struct lpfc_hba *phba;
3044         unsigned long flags;
3045
3046         if (ndlp) {
3047                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3048                         "node get:        did:x%x flg:x%x refcnt:x%x",
3049                         ndlp->nlp_DID, ndlp->nlp_flag,
3050                         atomic_read(&ndlp->kref.refcount));
3051                 /* The check of ndlp usage to prevent incrementing the
3052                  * ndlp reference count that is in the process of being
3053                  * released.
3054                  */
3055                 phba = ndlp->vport->phba;
3056                 spin_lock_irqsave(&phba->ndlp_lock, flags);
3057                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3058                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3059                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3060                                 "0276 lpfc_nlp_get: ndlp:x%p "
3061                                 "usgmap:x%x refcnt:%d\n",
3062                                 (void *)ndlp, ndlp->nlp_usg_map,
3063                                 atomic_read(&ndlp->kref.refcount));
3064                         return NULL;
3065                 } else
3066                         kref_get(&ndlp->kref);
3067                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3068         }
3069         return ndlp;
3070 }
3071
3072 /* This routine decrements the reference count for a ndlp structure. If the
3073  * count goes to 0, this indicates the the associated nodelist should be
3074  * freed. Returning 1 indicates the ndlp resource has been released; on the
3075  * other hand, returning 0 indicates the ndlp resource has not been released
3076  * yet.
3077  */
3078 int
3079 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3080 {
3081         struct lpfc_hba *phba;
3082         unsigned long flags;
3083
3084         if (!ndlp)
3085                 return 1;
3086
3087         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3088         "node put:        did:x%x flg:x%x refcnt:x%x",
3089                 ndlp->nlp_DID, ndlp->nlp_flag,
3090                 atomic_read(&ndlp->kref.refcount));
3091         phba = ndlp->vport->phba;
3092         spin_lock_irqsave(&phba->ndlp_lock, flags);
3093         /* Check the ndlp memory free acknowledge flag to avoid the
3094          * possible race condition that kref_put got invoked again
3095          * after previous one has done ndlp memory free.
3096          */
3097         if (NLP_CHK_FREE_ACK(ndlp)) {
3098                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3099                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3100                                 "0274 lpfc_nlp_put: ndlp:x%p "
3101                                 "usgmap:x%x refcnt:%d\n",
3102                                 (void *)ndlp, ndlp->nlp_usg_map,
3103                                 atomic_read(&ndlp->kref.refcount));
3104                 return 1;
3105         }
3106         /* Check the ndlp inactivate log flag to avoid the possible
3107          * race condition that kref_put got invoked again after ndlp
3108          * is already in inactivating state.
3109          */
3110         if (NLP_CHK_IACT_REQ(ndlp)) {
3111                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3112                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3113                                 "0275 lpfc_nlp_put: ndlp:x%p "
3114                                 "usgmap:x%x refcnt:%d\n",
3115                                 (void *)ndlp, ndlp->nlp_usg_map,
3116                                 atomic_read(&ndlp->kref.refcount));
3117                 return 1;
3118         }
3119         /* For last put, mark the ndlp usage flags to make sure no
3120          * other kref_get and kref_put on the same ndlp shall get
3121          * in between the process when the final kref_put has been
3122          * invoked on this ndlp.
3123          */
3124         if (atomic_read(&ndlp->kref.refcount) == 1) {
3125                 /* Indicate ndlp is put to inactive state. */
3126                 NLP_SET_IACT_REQ(ndlp);
3127                 /* Acknowledge ndlp memory free has been seen. */
3128                 if (NLP_CHK_FREE_REQ(ndlp))
3129                         NLP_SET_FREE_ACK(ndlp);
3130         }
3131         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3132         /* Note, the kref_put returns 1 when decrementing a reference
3133          * count that was 1, it invokes the release callback function,
3134          * but it still left the reference count as 1 (not actually
3135          * performs the last decrementation). Otherwise, it actually
3136          * decrements the reference count and returns 0.
3137          */
3138         return kref_put(&ndlp->kref, lpfc_nlp_release);
3139 }
3140
3141 /* This routine free's the specified nodelist if it is not in use
3142  * by any other discovery thread. This routine returns 1 if the
3143  * ndlp has been freed. A return value of 0 indicates the ndlp is
3144  * not yet been released.
3145  */
3146 int
3147 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3148 {
3149         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3150                 "node not used:   did:x%x flg:x%x refcnt:x%x",
3151                 ndlp->nlp_DID, ndlp->nlp_flag,
3152                 atomic_read(&ndlp->kref.refcount));
3153         if (atomic_read(&ndlp->kref.refcount) == 1)
3154                 if (lpfc_nlp_put(ndlp))
3155                         return 1;
3156         return 0;
3157 }