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

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2008 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         /* Unblock ELS traffic */
1091         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1092         /* Check for error */
1093         if (mb->mbxStatus) {
1094                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1095                                 "1307 READ_LA mbox error x%x state x%x\n",
1096                                 mb->mbxStatus, vport->port_state);
1097                 lpfc_mbx_issue_link_down(phba);
1098                 phba->link_state = LPFC_HBA_ERROR;
1099                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1100         }
1101
1102         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1103
1104         memcpy(&phba->alpa_map[0], mp->virt, 128);
1105
1106         spin_lock_irq(shost->host_lock);
1107         if (la->pb)
1108                 vport->fc_flag |= FC_BYPASSED_MODE;
1109         else
1110                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1111         spin_unlock_irq(shost->host_lock);
1112
1113         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1114             (phba->fc_eventTag == la->eventTag)) {
1115                 phba->fc_stat.LinkMultiEvent++;
1116                 if (la->attType == AT_LINK_UP)
1117                         if (phba->fc_eventTag != 0)
1118                                 lpfc_linkdown(phba);
1119         }
1120
1121         phba->fc_eventTag = la->eventTag;
1122
1123         if (la->attType == AT_LINK_UP) {
1124                 phba->fc_stat.LinkUp++;
1125                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1126                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1127                                         "1306 Link Up Event in loop back mode "
1128                                         "x%x received Data: x%x x%x x%x x%x\n",
1129                                         la->eventTag, phba->fc_eventTag,
1130                                         la->granted_AL_PA, la->UlnkSpeed,
1131                                         phba->alpa_map[0]);
1132                 } else {
1133                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1134                                         "1303 Link Up Event x%x received "
1135                                         "Data: x%x x%x x%x x%x\n",
1136                                         la->eventTag, phba->fc_eventTag,
1137                                         la->granted_AL_PA, la->UlnkSpeed,
1138                                         phba->alpa_map[0]);
1139                 }
1140                 lpfc_mbx_process_link_up(phba, la);
1141         } else {
1142                 phba->fc_stat.LinkDown++;
1143                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1144                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1145                                 "1308 Link Down Event in loop back mode "
1146                                 "x%x received "
1147                                 "Data: x%x x%x x%x\n",
1148                                 la->eventTag, phba->fc_eventTag,
1149                                 phba->pport->port_state, vport->fc_flag);
1150                 }
1151                 else {
1152                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1153                                 "1305 Link Down Event x%x received "
1154                                 "Data: x%x x%x x%x\n",
1155                                 la->eventTag, phba->fc_eventTag,
1156                                 phba->pport->port_state, vport->fc_flag);
1157                 }
1158                 lpfc_mbx_issue_link_down(phba);
1159         }
1160
1161 lpfc_mbx_cmpl_read_la_free_mbuf:
1162         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1163         kfree(mp);
1164         mempool_free(pmb, phba->mbox_mem_pool);
1165         return;
1166 }
1167
1168 /*
1169  * This routine handles processing a REG_LOGIN mailbox
1170  * command upon completion. It is setup in the LPFC_MBOXQ
1171  * as the completion routine when the command is
1172  * handed off to the SLI layer.
1173  */
1174 void
1175 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1176 {
1177         struct lpfc_vport  *vport = pmb->vport;
1178         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1179         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1180
1181         pmb->context1 = NULL;
1182
1183         /* Good status, call state machine */
1184         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1185         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1186         kfree(mp);
1187         mempool_free(pmb, phba->mbox_mem_pool);
1188         /* decrement the node reference count held for this callback
1189          * function.
1190          */
1191         lpfc_nlp_put(ndlp);
1192
1193         return;
1194 }
1195
1196 static void
1197 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1198 {
1199         MAILBOX_t *mb = &pmb->mb;
1200         struct lpfc_vport *vport = pmb->vport;
1201         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1202
1203         switch (mb->mbxStatus) {
1204         case 0x0011:
1205         case 0x0020:
1206         case 0x9700:
1207                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1208                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1209                                  mb->mbxStatus);
1210                 break;
1211         }
1212         vport->unreg_vpi_cmpl = VPORT_OK;
1213         mempool_free(pmb, phba->mbox_mem_pool);
1214         /*
1215          * This shost reference might have been taken at the beginning of
1216          * lpfc_vport_delete()
1217          */
1218         if (vport->load_flag & FC_UNLOADING)
1219                 scsi_host_put(shost);
1220 }
1221
1222 void
1223 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1224 {
1225         struct lpfc_hba  *phba = vport->phba;
1226         LPFC_MBOXQ_t *mbox;
1227         int rc;
1228
1229         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1230         if (!mbox)
1231                 return;
1232
1233         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1234         mbox->vport = vport;
1235         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1236         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1237         if (rc == MBX_NOT_FINISHED) {
1238                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1239                                  "1800 Could not issue unreg_vpi\n");
1240                 mempool_free(mbox, phba->mbox_mem_pool);
1241                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1242         }
1243 }
1244
1245 static void
1246 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1247 {
1248         struct lpfc_vport *vport = pmb->vport;
1249         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1250         MAILBOX_t *mb = &pmb->mb;
1251
1252         switch (mb->mbxStatus) {
1253         case 0x0011:
1254         case 0x9601:
1255         case 0x9602:
1256                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1257                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1258                                  mb->mbxStatus);
1259                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1260                 spin_lock_irq(shost->host_lock);
1261                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1262                 spin_unlock_irq(shost->host_lock);
1263                 vport->fc_myDID = 0;
1264                 goto out;
1265         }
1266
1267         vport->num_disc_nodes = 0;
1268         /* go thru NPR list and issue ELS PLOGIs */
1269         if (vport->fc_npr_cnt)
1270                 lpfc_els_disc_plogi(vport);
1271
1272         if (!vport->num_disc_nodes) {
1273                 spin_lock_irq(shost->host_lock);
1274                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1275                 spin_unlock_irq(shost->host_lock);
1276                 lpfc_can_disctmo(vport);
1277         }
1278         vport->port_state = LPFC_VPORT_READY;
1279
1280 out:
1281         mempool_free(pmb, phba->mbox_mem_pool);
1282         return;
1283 }
1284
1285 /*
1286  * This routine handles processing a Fabric REG_LOGIN mailbox
1287  * command upon completion. It is setup in the LPFC_MBOXQ
1288  * as the completion routine when the command is
1289  * handed off to the SLI layer.
1290  */
1291 void
1292 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1293 {
1294         struct lpfc_vport *vport = pmb->vport;
1295         MAILBOX_t *mb = &pmb->mb;
1296         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1297         struct lpfc_nodelist *ndlp;
1298         struct lpfc_vport **vports;
1299         int i;
1300
1301         ndlp = (struct lpfc_nodelist *) pmb->context2;
1302         pmb->context1 = NULL;
1303         pmb->context2 = NULL;
1304         if (mb->mbxStatus) {
1305                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1306                 kfree(mp);
1307                 mempool_free(pmb, phba->mbox_mem_pool);
1308
1309                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1310                         /* FLOGI failed, use loop map to make discovery list */
1311                         lpfc_disc_list_loopmap(vport);
1312
1313                         /* Start discovery */
1314                         lpfc_disc_start(vport);
1315                         /* Decrement the reference count to ndlp after the
1316                          * reference to the ndlp are done.
1317                          */
1318                         lpfc_nlp_put(ndlp);
1319                         return;
1320                 }
1321
1322                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1323                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1324                                  "0258 Register Fabric login error: 0x%x\n",
1325                                  mb->mbxStatus);
1326                 /* Decrement the reference count to ndlp after the reference
1327                  * to the ndlp are done.
1328                  */
1329                 lpfc_nlp_put(ndlp);
1330                 return;
1331         }
1332
1333         ndlp->nlp_rpi = mb->un.varWords[0];
1334         ndlp->nlp_type |= NLP_FABRIC;
1335         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1336
1337         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1338                 vports = lpfc_create_vport_work_array(phba);
1339                 if (vports != NULL)
1340                         for(i = 0;
1341                             i <= phba->max_vpi && vports[i] != NULL;
1342                             i++) {
1343                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1344                                         continue;
1345                                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1346                                         lpfc_vport_set_state(vports[i],
1347                                                         FC_VPORT_LINKDOWN);
1348                                         continue;
1349                                 }
1350                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1351                                         lpfc_initial_fdisc(vports[i]);
1352                                 else {
1353                                         lpfc_vport_set_state(vports[i],
1354                                                 FC_VPORT_NO_FABRIC_SUPP);
1355                                         lpfc_printf_vlog(vport, KERN_ERR,
1356                                                          LOG_ELS,
1357                                                         "0259 No NPIV "
1358                                                         "Fabric support\n");
1359                                 }
1360                         }
1361                 lpfc_destroy_vport_work_array(phba, vports);
1362                 lpfc_do_scr_ns_plogi(phba, vport);
1363         }
1364
1365         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1366         kfree(mp);
1367         mempool_free(pmb, phba->mbox_mem_pool);
1368
1369         /* Drop the reference count from the mbox at the end after
1370          * all the current reference to the ndlp have been done.
1371          */
1372         lpfc_nlp_put(ndlp);
1373         return;
1374 }
1375
1376 /*
1377  * This routine handles processing a NameServer REG_LOGIN mailbox
1378  * command upon completion. It is setup in the LPFC_MBOXQ
1379  * as the completion routine when the command is
1380  * handed off to the SLI layer.
1381  */
1382 void
1383 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1384 {
1385         MAILBOX_t *mb = &pmb->mb;
1386         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1387         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1388         struct lpfc_vport *vport = pmb->vport;
1389
1390         if (mb->mbxStatus) {
1391 out:
1392                 /* decrement the node reference count held for this
1393                  * callback function.
1394                  */
1395                 lpfc_nlp_put(ndlp);
1396                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1397                 kfree(mp);
1398                 mempool_free(pmb, phba->mbox_mem_pool);
1399
1400                 /* If no other thread is using the ndlp, free it */
1401                 lpfc_nlp_not_used(ndlp);
1402
1403                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1404                         /*
1405                          * RegLogin failed, use loop map to make discovery
1406                          * list
1407                          */
1408                         lpfc_disc_list_loopmap(vport);
1409
1410                         /* Start discovery */
1411                         lpfc_disc_start(vport);
1412                         return;
1413                 }
1414                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1415                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1416                                  "0260 Register NameServer error: 0x%x\n",
1417                                  mb->mbxStatus);
1418                 return;
1419         }
1420
1421         pmb->context1 = NULL;
1422
1423         ndlp->nlp_rpi = mb->un.varWords[0];
1424         ndlp->nlp_type |= NLP_FABRIC;
1425         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1426
1427         if (vport->port_state < LPFC_VPORT_READY) {
1428                 /* Link up discovery requires Fabric registration. */
1429                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1430                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1431                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1432                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1433                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1434
1435                 /* Issue SCR just before NameServer GID_FT Query */
1436                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1437         }
1438
1439         vport->fc_ns_retry = 0;
1440         /* Good status, issue CT Request to NameServer */
1441         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1442                 /* Cannot issue NameServer Query, so finish up discovery */
1443                 goto out;
1444         }
1445
1446         /* decrement the node reference count held for this
1447          * callback function.
1448          */
1449         lpfc_nlp_put(ndlp);
1450         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1451         kfree(mp);
1452         mempool_free(pmb, phba->mbox_mem_pool);
1453
1454         return;
1455 }
1456
1457 static void
1458 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1459 {
1460         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1461         struct fc_rport  *rport;
1462         struct lpfc_rport_data *rdata;
1463         struct fc_rport_identifiers rport_ids;
1464         struct lpfc_hba  *phba = vport->phba;
1465
1466         /* Remote port has reappeared. Re-register w/ FC transport */
1467         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1468         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1469         rport_ids.port_id = ndlp->nlp_DID;
1470         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1471
1472         /*
1473          * We leave our node pointer in rport->dd_data when we unregister a
1474          * FCP target port.  But fc_remote_port_add zeros the space to which
1475          * rport->dd_data points.  So, if we're reusing a previously
1476          * registered port, drop the reference that we took the last time we
1477          * registered the port.
1478          */
1479         if (ndlp->rport && ndlp->rport->dd_data &&
1480             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1481                 lpfc_nlp_put(ndlp);
1482
1483         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1484                 "rport add:       did:x%x flg:x%x type x%x",
1485                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1486
1487         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1488         if (!rport || !get_device(&rport->dev)) {
1489                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1490                            "Warning: fc_remote_port_add failed\n");
1491                 return;
1492         }
1493
1494         /* initialize static port data */
1495         rport->maxframe_size = ndlp->nlp_maxframe;
1496         rport->supported_classes = ndlp->nlp_class_sup;
1497         rdata = rport->dd_data;
1498         rdata->pnode = lpfc_nlp_get(ndlp);
1499
1500         if (ndlp->nlp_type & NLP_FCP_TARGET)
1501                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1502         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1503                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1504
1505
1506         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1507                 fc_remote_port_rolechg(rport, rport_ids.roles);
1508
1509         if ((rport->scsi_target_id != -1) &&
1510             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1511                 ndlp->nlp_sid = rport->scsi_target_id;
1512         }
1513         return;
1514 }
1515
1516 static void
1517 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1518 {
1519         struct fc_rport *rport = ndlp->rport;
1520
1521         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1522                 "rport delete:    did:x%x flg:x%x type x%x",
1523                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1524
1525         fc_remote_port_delete(rport);
1526
1527         return;
1528 }
1529
1530 static void
1531 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1532 {
1533         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1534
1535         spin_lock_irq(shost->host_lock);
1536         switch (state) {
1537         case NLP_STE_UNUSED_NODE:
1538                 vport->fc_unused_cnt += count;
1539                 break;
1540         case NLP_STE_PLOGI_ISSUE:
1541                 vport->fc_plogi_cnt += count;
1542                 break;
1543         case NLP_STE_ADISC_ISSUE:
1544                 vport->fc_adisc_cnt += count;
1545                 break;
1546         case NLP_STE_REG_LOGIN_ISSUE:
1547                 vport->fc_reglogin_cnt += count;
1548                 break;
1549         case NLP_STE_PRLI_ISSUE:
1550                 vport->fc_prli_cnt += count;
1551                 break;
1552         case NLP_STE_UNMAPPED_NODE:
1553                 vport->fc_unmap_cnt += count;
1554                 break;
1555         case NLP_STE_MAPPED_NODE:
1556                 vport->fc_map_cnt += count;
1557                 break;
1558         case NLP_STE_NPR_NODE:
1559                 vport->fc_npr_cnt += count;
1560                 break;
1561         }
1562         spin_unlock_irq(shost->host_lock);
1563 }
1564
1565 static void
1566 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1567                        int old_state, int new_state)
1568 {
1569         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1570
1571         if (new_state == NLP_STE_UNMAPPED_NODE) {
1572                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1573                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1574                 ndlp->nlp_type |= NLP_FC_NODE;
1575         }
1576         if (new_state == NLP_STE_MAPPED_NODE)
1577                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1578         if (new_state == NLP_STE_NPR_NODE)
1579                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1580
1581         /* Transport interface */
1582         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1583                             old_state == NLP_STE_UNMAPPED_NODE)) {
1584                 vport->phba->nport_event_cnt++;
1585                 lpfc_unregister_remote_port(ndlp);
1586         }
1587
1588         if (new_state ==  NLP_STE_MAPPED_NODE ||
1589             new_state == NLP_STE_UNMAPPED_NODE) {
1590                 vport->phba->nport_event_cnt++;
1591                 /*
1592                  * Tell the fc transport about the port, if we haven't
1593                  * already. If we have, and it's a scsi entity, be
1594                  * sure to unblock any attached scsi devices
1595                  */
1596                 lpfc_register_remote_port(vport, ndlp);
1597         }
1598         /*
1599          * if we added to Mapped list, but the remote port
1600          * registration failed or assigned a target id outside
1601          * our presentable range - move the node to the
1602          * Unmapped List
1603          */
1604         if (new_state == NLP_STE_MAPPED_NODE &&
1605             (!ndlp->rport ||
1606              ndlp->rport->scsi_target_id == -1 ||
1607              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1608                 spin_lock_irq(shost->host_lock);
1609                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1610                 spin_unlock_irq(shost->host_lock);
1611                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1612         }
1613 }
1614
1615 static char *
1616 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1617 {
1618         static char *states[] = {
1619                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1620                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1621                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1622                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1623                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1624                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1625                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1626                 [NLP_STE_NPR_NODE] = "NPR",
1627         };
1628
1629         if (state < NLP_STE_MAX_STATE && states[state])
1630                 strlcpy(buffer, states[state], size);
1631         else
1632                 snprintf(buffer, size, "unknown (%d)", state);
1633         return buffer;
1634 }
1635
1636 void
1637 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1638                    int state)
1639 {
1640         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1641         int  old_state = ndlp->nlp_state;
1642         char name1[16], name2[16];
1643
1644         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1645                          "0904 NPort state transition x%06x, %s -> %s\n",
1646                          ndlp->nlp_DID,
1647                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1648                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1649
1650         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1651                 "node statechg    did:x%x old:%d ste:%d",
1652                 ndlp->nlp_DID, old_state, state);
1653
1654         if (old_state == NLP_STE_NPR_NODE &&
1655             state != NLP_STE_NPR_NODE)
1656                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1657         if (old_state == NLP_STE_UNMAPPED_NODE) {
1658                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1659                 ndlp->nlp_type &= ~NLP_FC_NODE;
1660         }
1661
1662         if (list_empty(&ndlp->nlp_listp)) {
1663                 spin_lock_irq(shost->host_lock);
1664                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1665                 spin_unlock_irq(shost->host_lock);
1666         } else if (old_state)
1667                 lpfc_nlp_counters(vport, old_state, -1);
1668
1669         ndlp->nlp_state = state;
1670         lpfc_nlp_counters(vport, state, 1);
1671         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1672 }
1673
1674 void
1675 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1676 {
1677         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1678
1679         if (list_empty(&ndlp->nlp_listp)) {
1680                 spin_lock_irq(shost->host_lock);
1681                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1682                 spin_unlock_irq(shost->host_lock);
1683         }
1684 }
1685
1686 void
1687 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1688 {
1689         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1690
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         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1705         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1706                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1707         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1708                                 NLP_STE_UNUSED_NODE);
1709 }
1710
1711 struct lpfc_nodelist *
1712 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1713                  int state)
1714 {
1715         struct lpfc_hba *phba = vport->phba;
1716         uint32_t did;
1717         unsigned long flags;
1718
1719         if (!ndlp)
1720                 return NULL;
1721
1722         spin_lock_irqsave(&phba->ndlp_lock, flags);
1723         /* The ndlp should not be in memory free mode */
1724         if (NLP_CHK_FREE_REQ(ndlp)) {
1725                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1726                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1727                                 "0277 lpfc_enable_node: ndlp:x%p "
1728                                 "usgmap:x%x refcnt:%d\n",
1729                                 (void *)ndlp, ndlp->nlp_usg_map,
1730                                 atomic_read(&ndlp->kref.refcount));
1731                 return NULL;
1732         }
1733         /* The ndlp should not already be in active mode */
1734         if (NLP_CHK_NODE_ACT(ndlp)) {
1735                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1736                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1737                                 "0278 lpfc_enable_node: ndlp:x%p "
1738                                 "usgmap:x%x refcnt:%d\n",
1739                                 (void *)ndlp, ndlp->nlp_usg_map,
1740                                 atomic_read(&ndlp->kref.refcount));
1741                 return NULL;
1742         }
1743
1744         /* Keep the original DID */
1745         did = ndlp->nlp_DID;
1746
1747         /* re-initialize ndlp except of ndlp linked list pointer */
1748         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1749                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1750         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1751         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1752         init_timer(&ndlp->nlp_delayfunc);
1753         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1754         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1755         ndlp->nlp_DID = did;
1756         ndlp->vport = vport;
1757         ndlp->nlp_sid = NLP_NO_SID;
1758         /* ndlp management re-initialize */
1759         kref_init(&ndlp->kref);
1760         NLP_INT_NODE_ACT(ndlp);
1761
1762         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1763
1764         if (state != NLP_STE_UNUSED_NODE)
1765                 lpfc_nlp_set_state(vport, ndlp, state);
1766
1767         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1768                 "node enable:       did:x%x",
1769                 ndlp->nlp_DID, 0, 0);
1770         return ndlp;
1771 }
1772
1773 void
1774 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1775 {
1776         /*
1777          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1778          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1779          * the ndlp from the vport. The ndlp marked as UNUSED on the list
1780          * until ALL other outstanding threads have completed. We check
1781          * that the ndlp not already in the UNUSED state before we proceed.
1782          */
1783         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1784                 return;
1785         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1786         lpfc_nlp_put(ndlp);
1787         return;
1788 }
1789
1790 /*
1791  * Start / ReStart rescue timer for Discovery / RSCN handling
1792  */
1793 void
1794 lpfc_set_disctmo(struct lpfc_vport *vport)
1795 {
1796         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1797         struct lpfc_hba  *phba = vport->phba;
1798         uint32_t tmo;
1799
1800         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1801                 /* For FAN, timeout should be greater then edtov */
1802                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1803         } else {
1804                 /* Normal discovery timeout should be > then ELS/CT timeout
1805                  * FC spec states we need 3 * ratov for CT requests
1806                  */
1807                 tmo = ((phba->fc_ratov * 3) + 3);
1808         }
1809
1810
1811         if (!timer_pending(&vport->fc_disctmo)) {
1812                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1813                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1814                         tmo, vport->port_state, vport->fc_flag);
1815         }
1816
1817         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1818         spin_lock_irq(shost->host_lock);
1819         vport->fc_flag |= FC_DISC_TMO;
1820         spin_unlock_irq(shost->host_lock);
1821
1822         /* Start Discovery Timer state <hba_state> */
1823         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1824                          "0247 Start Discovery Timer state x%x "
1825                          "Data: x%x x%lx x%x x%x\n",
1826                          vport->port_state, tmo,
1827                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1828                          vport->fc_adisc_cnt);
1829
1830         return;
1831 }
1832
1833 /*
1834  * Cancel rescue timer for Discovery / RSCN handling
1835  */
1836 int
1837 lpfc_can_disctmo(struct lpfc_vport *vport)
1838 {
1839         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1840         unsigned long iflags;
1841
1842         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1843                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1844                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1845
1846         /* Turn off discovery timer if its running */
1847         if (vport->fc_flag & FC_DISC_TMO) {
1848                 spin_lock_irqsave(shost->host_lock, iflags);
1849                 vport->fc_flag &= ~FC_DISC_TMO;
1850                 spin_unlock_irqrestore(shost->host_lock, iflags);
1851                 del_timer_sync(&vport->fc_disctmo);
1852                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1853                 vport->work_port_events &= ~WORKER_DISC_TMO;
1854                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1855         }
1856
1857         /* Cancel Discovery Timer state <hba_state> */
1858         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1859                          "0248 Cancel Discovery Timer state x%x "
1860                          "Data: x%x x%x x%x\n",
1861                          vport->port_state, vport->fc_flag,
1862                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1863         return 0;
1864 }
1865
1866 /*
1867  * Check specified ring for outstanding IOCB on the SLI queue
1868  * Return true if iocb matches the specified nport
1869  */
1870 int
1871 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1872                     struct lpfc_sli_ring *pring,
1873                     struct lpfc_iocbq *iocb,
1874                     struct lpfc_nodelist *ndlp)
1875 {
1876         struct lpfc_sli *psli = &phba->sli;
1877         IOCB_t *icmd = &iocb->iocb;
1878         struct lpfc_vport    *vport = ndlp->vport;
1879
1880         if (iocb->vport != vport)
1881                 return 0;
1882
1883         if (pring->ringno == LPFC_ELS_RING) {
1884                 switch (icmd->ulpCommand) {
1885                 case CMD_GEN_REQUEST64_CR:
1886                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1887                                 return 1;
1888                 case CMD_ELS_REQUEST64_CR:
1889                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1890                                 return 1;
1891                 case CMD_XMIT_ELS_RSP64_CX:
1892                         if (iocb->context1 == (uint8_t *) ndlp)
1893                                 return 1;
1894                 }
1895         } else if (pring->ringno == psli->extra_ring) {
1896
1897         } else if (pring->ringno == psli->fcp_ring) {
1898                 /* Skip match check if waiting to relogin to FCP target */
1899                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1900                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1901                         return 0;
1902                 }
1903                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1904                         return 1;
1905                 }
1906         } else if (pring->ringno == psli->next_ring) {
1907
1908         }
1909         return 0;
1910 }
1911
1912 /*
1913  * Free resources / clean up outstanding I/Os
1914  * associated with nlp_rpi in the LPFC_NODELIST entry.
1915  */
1916 static int
1917 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1918 {
1919         LIST_HEAD(completions);
1920         struct lpfc_sli *psli;
1921         struct lpfc_sli_ring *pring;
1922         struct lpfc_iocbq *iocb, *next_iocb;
1923         IOCB_t *icmd;
1924         uint32_t rpi, i;
1925
1926         lpfc_fabric_abort_nport(ndlp);
1927
1928         /*
1929          * Everything that matches on txcmplq will be returned
1930          * by firmware with a no rpi error.
1931          */
1932         psli = &phba->sli;
1933         rpi = ndlp->nlp_rpi;
1934         if (rpi) {
1935                 /* Now process each ring */
1936                 for (i = 0; i < psli->num_rings; i++) {
1937                         pring = &psli->ring[i];
1938
1939                         spin_lock_irq(&phba->hbalock);
1940                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1941                                                  list) {
1942                                 /*
1943                                  * Check to see if iocb matches the nport we are
1944                                  * looking for
1945                                  */
1946                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1947                                                          ndlp))) {
1948                                         /* It matches, so deque and call compl
1949                                            with an error */
1950                                         list_move_tail(&iocb->list,
1951                                                        &completions);
1952                                         pring->txq_cnt--;
1953                                 }
1954                         }
1955                         spin_unlock_irq(&phba->hbalock);
1956                 }
1957         }
1958
1959         while (!list_empty(&completions)) {
1960                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1961                 list_del_init(&iocb->list);
1962
1963                 if (!iocb->iocb_cmpl)
1964                         lpfc_sli_release_iocbq(phba, iocb);
1965                 else {
1966                         icmd = &iocb->iocb;
1967                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1968                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1969                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1970                 }
1971         }
1972
1973         return 0;
1974 }
1975
1976 /*
1977  * Free rpi associated with LPFC_NODELIST entry.
1978  * This routine is called from lpfc_freenode(), when we are removing
1979  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1980  * LOGO that completes successfully, and we are waiting to PLOGI back
1981  * to the remote NPort. In addition, it is called after we receive
1982  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1983  * we are waiting to PLOGI back to the remote NPort.
1984  */
1985 int
1986 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1987 {
1988         struct lpfc_hba *phba = vport->phba;
1989         LPFC_MBOXQ_t    *mbox;
1990         int rc;
1991
1992         if (ndlp->nlp_rpi) {
1993                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1994                 if (mbox) {
1995                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1996                         mbox->vport = vport;
1997                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1998                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1999                         if (rc == MBX_NOT_FINISHED)
2000                                 mempool_free(mbox, phba->mbox_mem_pool);
2001                 }
2002                 lpfc_no_rpi(phba, ndlp);
2003                 ndlp->nlp_rpi = 0;
2004                 return 1;
2005         }
2006         return 0;
2007 }
2008
2009 void
2010 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2011 {
2012         struct lpfc_hba  *phba  = vport->phba;
2013         LPFC_MBOXQ_t     *mbox;
2014         int rc;
2015
2016         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2017         if (mbox) {
2018                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2019                 mbox->vport = vport;
2020                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2021                 mbox->context1 = NULL;
2022                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2023                 if (rc == MBX_NOT_FINISHED) {
2024                         mempool_free(mbox, phba->mbox_mem_pool);
2025                 }
2026         }
2027 }
2028
2029 void
2030 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2031 {
2032         struct lpfc_hba  *phba  = vport->phba;
2033         LPFC_MBOXQ_t     *mbox;
2034         int rc;
2035
2036         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2037         if (mbox) {
2038                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2039                 mbox->vport = vport;
2040                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2041                 mbox->context1 = NULL;
2042                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2043                 if (rc == MBX_NOT_FINISHED) {
2044                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2045                                          "1815 Could not issue "
2046                                          "unreg_did (default rpis)\n");
2047                         mempool_free(mbox, phba->mbox_mem_pool);
2048                 }
2049         }
2050 }
2051
2052 /*
2053  * Free resources associated with LPFC_NODELIST entry
2054  * so it can be freed.
2055  */
2056 static int
2057 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2058 {
2059         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2060         struct lpfc_hba  *phba = vport->phba;
2061         LPFC_MBOXQ_t *mb, *nextmb;
2062         struct lpfc_dmabuf *mp;
2063
2064         /* Cleanup node for NPort <nlp_DID> */
2065         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2066                          "0900 Cleanup node for NPort x%x "
2067                          "Data: x%x x%x x%x\n",
2068                          ndlp->nlp_DID, ndlp->nlp_flag,
2069                          ndlp->nlp_state, ndlp->nlp_rpi);
2070         if (NLP_CHK_FREE_REQ(ndlp)) {
2071                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2072                                 "0280 lpfc_cleanup_node: ndlp:x%p "
2073                                 "usgmap:x%x refcnt:%d\n",
2074                                 (void *)ndlp, ndlp->nlp_usg_map,
2075                                 atomic_read(&ndlp->kref.refcount));
2076                 lpfc_dequeue_node(vport, ndlp);
2077         } else {
2078                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2079                                 "0281 lpfc_cleanup_node: ndlp:x%p "
2080                                 "usgmap:x%x refcnt:%d\n",
2081                                 (void *)ndlp, ndlp->nlp_usg_map,
2082                                 atomic_read(&ndlp->kref.refcount));
2083                 lpfc_disable_node(vport, ndlp);
2084         }
2085
2086         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2087         if ((mb = phba->sli.mbox_active)) {
2088                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2089                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2090                         mb->context2 = NULL;
2091                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2092                 }
2093         }
2094
2095         spin_lock_irq(&phba->hbalock);
2096         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2097                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2098                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2099                         mp = (struct lpfc_dmabuf *) (mb->context1);
2100                         if (mp) {
2101                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2102                                 kfree(mp);
2103                         }
2104                         list_del(&mb->list);
2105                         mempool_free(mb, phba->mbox_mem_pool);
2106                         /* We shall not invoke the lpfc_nlp_put to decrement
2107                          * the ndlp reference count as we are in the process
2108                          * of lpfc_nlp_release.
2109                          */
2110                 }
2111         }
2112         spin_unlock_irq(&phba->hbalock);
2113
2114         lpfc_els_abort(phba, ndlp);
2115
2116         spin_lock_irq(shost->host_lock);
2117         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2118         spin_unlock_irq(shost->host_lock);
2119
2120         ndlp->nlp_last_elscmd = 0;
2121         del_timer_sync(&ndlp->nlp_delayfunc);
2122
2123         list_del_init(&ndlp->els_retry_evt.evt_listp);
2124         list_del_init(&ndlp->dev_loss_evt.evt_listp);
2125
2126         lpfc_unreg_rpi(vport, ndlp);
2127
2128         return 0;
2129 }
2130
2131 /*
2132  * Check to see if we can free the nlp back to the freelist.
2133  * If we are in the middle of using the nlp in the discovery state
2134  * machine, defer the free till we reach the end of the state machine.
2135  */
2136 static void
2137 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2138 {
2139         struct lpfc_hba  *phba = vport->phba;
2140         struct lpfc_rport_data *rdata;
2141         LPFC_MBOXQ_t *mbox;
2142         int rc;
2143
2144         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2145         if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2146                 /* For this case we need to cleanup the default rpi
2147                  * allocated by the firmware.
2148                  */
2149                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2150                         != NULL) {
2151                         rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2152                             (uint8_t *) &vport->fc_sparam, mbox, 0);
2153                         if (rc) {
2154                                 mempool_free(mbox, phba->mbox_mem_pool);
2155                         }
2156                         else {
2157                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2158                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2159                                 mbox->vport = vport;
2160                                 mbox->context2 = NULL;
2161                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2162                                 if (rc == MBX_NOT_FINISHED) {
2163                                         mempool_free(mbox, phba->mbox_mem_pool);
2164                                 }
2165                         }
2166                 }
2167         }
2168         lpfc_cleanup_node(vport, ndlp);
2169
2170         /*
2171          * We can get here with a non-NULL ndlp->rport because when we
2172          * unregister a rport we don't break the rport/node linkage.  So if we
2173          * do, make sure we don't leaving any dangling pointers behind.
2174          */
2175         if (ndlp->rport) {
2176                 rdata = ndlp->rport->dd_data;
2177                 rdata->pnode = NULL;
2178                 ndlp->rport = NULL;
2179         }
2180 }
2181
2182 static int
2183 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2184               uint32_t did)
2185 {
2186         D_ID mydid, ndlpdid, matchdid;
2187
2188         if (did == Bcast_DID)
2189                 return 0;
2190
2191         /* First check for Direct match */
2192         if (ndlp->nlp_DID == did)
2193                 return 1;
2194
2195         /* Next check for area/domain identically equals 0 match */
2196         mydid.un.word = vport->fc_myDID;
2197         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2198                 return 0;
2199         }
2200
2201         matchdid.un.word = did;
2202         ndlpdid.un.word = ndlp->nlp_DID;
2203         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2204                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2205                     (mydid.un.b.area == matchdid.un.b.area)) {
2206                         if ((ndlpdid.un.b.domain == 0) &&
2207                             (ndlpdid.un.b.area == 0)) {
2208                                 if (ndlpdid.un.b.id)
2209                                         return 1;
2210                         }
2211                         return 0;
2212                 }
2213
2214                 matchdid.un.word = ndlp->nlp_DID;
2215                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2216                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2217                         if ((matchdid.un.b.domain == 0) &&
2218                             (matchdid.un.b.area == 0)) {
2219                                 if (matchdid.un.b.id)
2220                                         return 1;
2221                         }
2222                 }
2223         }
2224         return 0;
2225 }
2226
2227 /* Search for a nodelist entry */
2228 static struct lpfc_nodelist *
2229 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2230 {
2231         struct lpfc_nodelist *ndlp;
2232         uint32_t data1;
2233
2234         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2235                 if (lpfc_matchdid(vport, ndlp, did)) {
2236                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2237                                  ((uint32_t) ndlp->nlp_xri << 16) |
2238                                  ((uint32_t) ndlp->nlp_type << 8) |
2239                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2240                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2241                                          "0929 FIND node DID "
2242                                          "Data: x%p x%x x%x x%x\n",
2243                                          ndlp, ndlp->nlp_DID,
2244                                          ndlp->nlp_flag, data1);
2245                         return ndlp;
2246                 }
2247         }
2248
2249         /* FIND node did <did> NOT FOUND */
2250         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2251                          "0932 FIND node did x%x NOT FOUND.\n", did);
2252         return NULL;
2253 }
2254
2255 struct lpfc_nodelist *
2256 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2257 {
2258         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2259         struct lpfc_nodelist *ndlp;
2260
2261         spin_lock_irq(shost->host_lock);
2262         ndlp = __lpfc_findnode_did(vport, did);
2263         spin_unlock_irq(shost->host_lock);
2264         return ndlp;
2265 }
2266
2267 struct lpfc_nodelist *
2268 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2269 {
2270         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2271         struct lpfc_nodelist *ndlp;
2272
2273         ndlp = lpfc_findnode_did(vport, did);
2274         if (!ndlp) {
2275                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2276                     lpfc_rscn_payload_check(vport, did) == 0)
2277                         return NULL;
2278                 ndlp = (struct lpfc_nodelist *)
2279                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2280                 if (!ndlp)
2281                         return NULL;
2282                 lpfc_nlp_init(vport, ndlp, did);
2283                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2284                 spin_lock_irq(shost->host_lock);
2285                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2286                 spin_unlock_irq(shost->host_lock);
2287                 return ndlp;
2288         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2289                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2290                 if (!ndlp)
2291                         return NULL;
2292                 spin_lock_irq(shost->host_lock);
2293                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2294                 spin_unlock_irq(shost->host_lock);
2295                 return ndlp;
2296         }
2297
2298         if ((vport->fc_flag & FC_RSCN_MODE) &&
2299             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2300                 if (lpfc_rscn_payload_check(vport, did)) {
2301                         /* If we've already recieved a PLOGI from this NPort
2302                          * we don't need to try to discover it again.
2303                          */
2304                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2305                                 return NULL;
2306
2307                         spin_lock_irq(shost->host_lock);
2308                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2309                         spin_unlock_irq(shost->host_lock);
2310
2311                         /* Since this node is marked for discovery,
2312                          * delay timeout is not needed.
2313                          */
2314                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2315                 } else
2316                         ndlp = NULL;
2317         } else {
2318                 /* If we've already recieved a PLOGI from this NPort,
2319                  * or we are already in the process of discovery on it,
2320                  * we don't need to try to discover it again.
2321                  */
2322                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2323                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2324                     ndlp->nlp_flag & NLP_RCV_PLOGI)
2325                         return NULL;
2326                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2327                 spin_lock_irq(shost->host_lock);
2328                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2329                 spin_unlock_irq(shost->host_lock);
2330         }
2331         return ndlp;
2332 }
2333
2334 /* Build a list of nodes to discover based on the loopmap */
2335 void
2336 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2337 {
2338         struct lpfc_hba  *phba = vport->phba;
2339         int j;
2340         uint32_t alpa, index;
2341
2342         if (!lpfc_is_link_up(phba))
2343                 return;
2344
2345         if (phba->fc_topology != TOPOLOGY_LOOP)
2346                 return;
2347
2348         /* Check for loop map present or not */
2349         if (phba->alpa_map[0]) {
2350                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2351                         alpa = phba->alpa_map[j];
2352                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2353                                 continue;
2354                         lpfc_setup_disc_node(vport, alpa);
2355                 }
2356         } else {
2357                 /* No alpamap, so try all alpa's */
2358                 for (j = 0; j < FC_MAXLOOP; j++) {
2359                         /* If cfg_scan_down is set, start from highest
2360                          * ALPA (0xef) to lowest (0x1).
2361                          */
2362                         if (vport->cfg_scan_down)
2363                                 index = j;
2364                         else
2365                                 index = FC_MAXLOOP - j - 1;
2366                         alpa = lpfcAlpaArray[index];
2367                         if ((vport->fc_myDID & 0xff) == alpa)
2368                                 continue;
2369                         lpfc_setup_disc_node(vport, alpa);
2370                 }
2371         }
2372         return;
2373 }
2374
2375 void
2376 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2377 {
2378         LPFC_MBOXQ_t *mbox;
2379         struct lpfc_sli *psli = &phba->sli;
2380         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2381         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2382         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2383         int  rc;
2384
2385         /*
2386          * if it's not a physical port or if we already send
2387          * clear_la then don't send it.
2388          */
2389         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2390             (vport->port_type != LPFC_PHYSICAL_PORT))
2391                 return;
2392
2393                         /* Link up discovery */
2394         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2395                 phba->link_state = LPFC_CLEAR_LA;
2396                 lpfc_clear_la(phba, mbox);
2397                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2398                 mbox->vport = vport;
2399                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2400                 if (rc == MBX_NOT_FINISHED) {
2401                         mempool_free(mbox, phba->mbox_mem_pool);
2402                         lpfc_disc_flush_list(vport);
2403                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2404                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2405                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2406                         phba->link_state = LPFC_HBA_ERROR;
2407                 }
2408         }
2409 }
2410
2411 /* Reg_vpi to tell firmware to resume normal operations */
2412 void
2413 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2414 {
2415         LPFC_MBOXQ_t *regvpimbox;
2416
2417         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2418         if (regvpimbox) {
2419                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2420                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2421                 regvpimbox->vport = vport;
2422                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2423                                         == MBX_NOT_FINISHED) {
2424                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2425                 }
2426         }
2427 }
2428
2429 /* Start Link up / RSCN discovery on NPR nodes */
2430 void
2431 lpfc_disc_start(struct lpfc_vport *vport)
2432 {
2433         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2434         struct lpfc_hba  *phba = vport->phba;
2435         uint32_t num_sent;
2436         uint32_t clear_la_pending;
2437         int did_changed;
2438
2439         if (!lpfc_is_link_up(phba))
2440                 return;
2441
2442         if (phba->link_state == LPFC_CLEAR_LA)
2443                 clear_la_pending = 1;
2444         else
2445                 clear_la_pending = 0;
2446
2447         if (vport->port_state < LPFC_VPORT_READY)
2448                 vport->port_state = LPFC_DISC_AUTH;
2449
2450         lpfc_set_disctmo(vport);
2451
2452         if (vport->fc_prevDID == vport->fc_myDID)
2453                 did_changed = 0;
2454         else
2455                 did_changed = 1;
2456
2457         vport->fc_prevDID = vport->fc_myDID;
2458         vport->num_disc_nodes = 0;
2459
2460         /* Start Discovery state <hba_state> */
2461         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2462                          "0202 Start Discovery hba state x%x "
2463                          "Data: x%x x%x x%x\n",
2464                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2465                          vport->fc_adisc_cnt);
2466
2467         /* First do ADISCs - if any */
2468         num_sent = lpfc_els_disc_adisc(vport);
2469
2470         if (num_sent)
2471                 return;
2472
2473         /*
2474          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2475          * continue discovery.
2476          */
2477         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2478             !(vport->fc_flag & FC_PT2PT) &&
2479             !(vport->fc_flag & FC_RSCN_MODE)) {
2480                 lpfc_issue_reg_vpi(phba, vport);
2481                 return;
2482         }
2483
2484         /*
2485          * For SLI2, we need to set port_state to READY and continue
2486          * discovery.
2487          */
2488         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2489                 /* If we get here, there is nothing to ADISC */
2490                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2491                         lpfc_issue_clear_la(phba, vport);
2492
2493                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2494                         vport->num_disc_nodes = 0;
2495                         /* go thru NPR nodes and issue ELS PLOGIs */
2496                         if (vport->fc_npr_cnt)
2497                                 lpfc_els_disc_plogi(vport);
2498
2499                         if (!vport->num_disc_nodes) {
2500                                 spin_lock_irq(shost->host_lock);
2501                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2502                                 spin_unlock_irq(shost->host_lock);
2503                                 lpfc_can_disctmo(vport);
2504                         }
2505                 }
2506                 vport->port_state = LPFC_VPORT_READY;
2507         } else {
2508                 /* Next do PLOGIs - if any */
2509                 num_sent = lpfc_els_disc_plogi(vport);
2510
2511                 if (num_sent)
2512                         return;
2513
2514                 if (vport->fc_flag & FC_RSCN_MODE) {
2515                         /* Check to see if more RSCNs came in while we
2516                          * were processing this one.
2517                          */
2518                         if ((vport->fc_rscn_id_cnt == 0) &&
2519                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2520                                 spin_lock_irq(shost->host_lock);
2521                                 vport->fc_flag &= ~FC_RSCN_MODE;
2522                                 spin_unlock_irq(shost->host_lock);
2523                                 lpfc_can_disctmo(vport);
2524                         } else
2525                                 lpfc_els_handle_rscn(vport);
2526                 }
2527         }
2528         return;
2529 }
2530
2531 /*
2532  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2533  *  ring the match the sppecified nodelist.
2534  */
2535 static void
2536 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2537 {
2538         LIST_HEAD(completions);
2539         struct lpfc_sli *psli;
2540         IOCB_t     *icmd;
2541         struct lpfc_iocbq    *iocb, *next_iocb;
2542         struct lpfc_sli_ring *pring;
2543
2544         psli = &phba->sli;
2545         pring = &psli->ring[LPFC_ELS_RING];
2546
2547         /* Error matching iocb on txq or txcmplq
2548          * First check the txq.
2549          */
2550         spin_lock_irq(&phba->hbalock);
2551         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2552                 if (iocb->context1 != ndlp) {
2553                         continue;
2554                 }
2555                 icmd = &iocb->iocb;
2556                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2557                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2558
2559                         list_move_tail(&iocb->list, &completions);
2560                         pring->txq_cnt--;
2561                 }
2562         }
2563
2564         /* Next check the txcmplq */
2565         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2566                 if (iocb->context1 != ndlp) {
2567                         continue;
2568                 }
2569                 icmd = &iocb->iocb;
2570                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2571                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2572                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2573                 }
2574         }
2575         spin_unlock_irq(&phba->hbalock);
2576
2577         while (!list_empty(&completions)) {
2578                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2579                 list_del_init(&iocb->list);
2580
2581                 if (!iocb->iocb_cmpl)
2582                         lpfc_sli_release_iocbq(phba, iocb);
2583                 else {
2584                         icmd = &iocb->iocb;
2585                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2586                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2587                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2588                 }
2589         }
2590 }
2591
2592 static void
2593 lpfc_disc_flush_list(struct lpfc_vport *vport)
2594 {
2595         struct lpfc_nodelist *ndlp, *next_ndlp;
2596         struct lpfc_hba *phba = vport->phba;
2597
2598         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2599                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2600                                          nlp_listp) {
2601                         if (!NLP_CHK_NODE_ACT(ndlp))
2602                                 continue;
2603                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2604                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2605                                 lpfc_free_tx(phba, ndlp);
2606                         }
2607                 }
2608         }
2609 }
2610
2611 void
2612 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2613 {
2614         lpfc_els_flush_rscn(vport);
2615         lpfc_els_flush_cmd(vport);
2616         lpfc_disc_flush_list(vport);
2617 }
2618
2619 /*****************************************************************************/
2620 /*
2621  * NAME:     lpfc_disc_timeout
2622  *
2623  * FUNCTION: Fibre Channel driver discovery timeout routine.
2624  *
2625  * EXECUTION ENVIRONMENT: interrupt only
2626  *
2627  * CALLED FROM:
2628  *      Timer function
2629  *
2630  * RETURNS:
2631  *      none
2632  */
2633 /*****************************************************************************/
2634 void
2635 lpfc_disc_timeout(unsigned long ptr)
2636 {
2637         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2638         struct lpfc_hba   *phba = vport->phba;
2639         unsigned long flags = 0;
2640
2641         if (unlikely(!phba))
2642                 return;
2643
2644         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2645                 spin_lock_irqsave(&vport->work_port_lock, flags);
2646                 vport->work_port_events |= WORKER_DISC_TMO;
2647                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2648
2649                 spin_lock_irqsave(&phba->hbalock, flags);
2650                 if (phba->work_wait)
2651                         lpfc_worker_wake_up(phba);
2652                 spin_unlock_irqrestore(&phba->hbalock, flags);
2653         }
2654         return;
2655 }
2656
2657 static void
2658 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2659 {
2660         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2661         struct lpfc_hba  *phba = vport->phba;
2662         struct lpfc_sli  *psli = &phba->sli;
2663         struct lpfc_nodelist *ndlp, *next_ndlp;
2664         LPFC_MBOXQ_t *initlinkmbox;
2665         int rc, clrlaerr = 0;
2666
2667         if (!(vport->fc_flag & FC_DISC_TMO))
2668                 return;
2669
2670         spin_lock_irq(shost->host_lock);
2671         vport->fc_flag &= ~FC_DISC_TMO;
2672         spin_unlock_irq(shost->host_lock);
2673
2674         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2675                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2676                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2677
2678         switch (vport->port_state) {
2679
2680         case LPFC_LOCAL_CFG_LINK:
2681         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2682          * FAN
2683          */
2684                                 /* FAN timeout */
2685                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2686                                  "0221 FAN timeout\n");
2687                 /* Start discovery by sending FLOGI, clean up old rpis */
2688                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2689                                          nlp_listp) {
2690                         if (!NLP_CHK_NODE_ACT(ndlp))
2691                                 continue;
2692                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2693                                 continue;
2694                         if (ndlp->nlp_type & NLP_FABRIC) {
2695                                 /* Clean up the ndlp on Fabric connections */
2696                                 lpfc_drop_node(vport, ndlp);
2697
2698                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2699                                 /* Fail outstanding IO now since device
2700                                  * is marked for PLOGI.
2701                                  */
2702                                 lpfc_unreg_rpi(vport, ndlp);
2703                         }
2704                 }
2705                 if (vport->port_state != LPFC_FLOGI) {
2706                         lpfc_initial_flogi(vport);
2707                         return;
2708                 }
2709                 break;
2710
2711         case LPFC_FDISC:
2712         case LPFC_FLOGI:
2713         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2714                 /* Initial FLOGI timeout */
2715                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2716                                  "0222 Initial %s timeout\n",
2717                                  vport->vpi ? "FDISC" : "FLOGI");
2718
2719                 /* Assume no Fabric and go on with discovery.
2720                  * Check for outstanding ELS FLOGI to abort.
2721                  */
2722
2723                 /* FLOGI failed, so just use loop map to make discovery list */
2724                 lpfc_disc_list_loopmap(vport);
2725
2726                 /* Start discovery */
2727                 lpfc_disc_start(vport);
2728                 break;
2729
2730         case LPFC_FABRIC_CFG_LINK:
2731         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2732            NameServer login */
2733                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2734                                  "0223 Timeout while waiting for "
2735                                  "NameServer login\n");
2736                 /* Next look for NameServer ndlp */
2737                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2738                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2739                         lpfc_els_abort(phba, ndlp);
2740
2741                 /* ReStart discovery */
2742                 goto restart_disc;
2743
2744         case LPFC_NS_QRY:
2745         /* Check for wait for NameServer Rsp timeout */
2746                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2747                                  "0224 NameServer Query timeout "
2748                                  "Data: x%x x%x\n",
2749                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2750
2751                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2752                         /* Try it one more time */
2753                         vport->fc_ns_retry++;
2754                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2755                                          vport->fc_ns_retry, 0);
2756                         if (rc == 0)
2757                                 break;
2758                 }
2759                 vport->fc_ns_retry = 0;
2760
2761 restart_disc:
2762                 /*
2763                  * Discovery is over.
2764                  * set port_state to PORT_READY if SLI2.
2765                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2766                  */
2767                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2768                         lpfc_issue_reg_vpi(phba, vport);
2769                 else  { /* NPIV Not enabled */
2770                         lpfc_issue_clear_la(phba, vport);
2771                         vport->port_state = LPFC_VPORT_READY;
2772                 }
2773
2774                 /* Setup and issue mailbox INITIALIZE LINK command */
2775                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2776                 if (!initlinkmbox) {
2777                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2778                                          "0206 Device Discovery "
2779                                          "completion error\n");
2780                         phba->link_state = LPFC_HBA_ERROR;
2781                         break;
2782                 }
2783
2784                 lpfc_linkdown(phba);
2785                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2786                                phba->cfg_link_speed);
2787                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2788                 initlinkmbox->vport = vport;
2789                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2790                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2791                 lpfc_set_loopback_flag(phba);
2792                 if (rc == MBX_NOT_FINISHED)
2793                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2794
2795                 break;
2796
2797         case LPFC_DISC_AUTH:
2798         /* Node Authentication timeout */
2799                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2800                                  "0227 Node Authentication timeout\n");
2801                 lpfc_disc_flush_list(vport);
2802
2803                 /*
2804                  * set port_state to PORT_READY if SLI2.
2805                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2806                  */
2807                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2808                         lpfc_issue_reg_vpi(phba, vport);
2809                 else {  /* NPIV Not enabled */
2810                         lpfc_issue_clear_la(phba, vport);
2811                         vport->port_state = LPFC_VPORT_READY;
2812                 }
2813                 break;
2814
2815         case LPFC_VPORT_READY:
2816                 if (vport->fc_flag & FC_RSCN_MODE) {
2817                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2818                                          "0231 RSCN timeout Data: x%x "
2819                                          "x%x\n",
2820                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2821
2822                         /* Cleanup any outstanding ELS commands */
2823                         lpfc_els_flush_cmd(vport);
2824
2825                         lpfc_els_flush_rscn(vport);
2826                         lpfc_disc_flush_list(vport);
2827                 }
2828                 break;
2829
2830         default:
2831                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2832                                  "0229 Unexpected discovery timeout, "
2833                                  "vport State x%x\n", vport->port_state);
2834                 break;
2835         }
2836
2837         switch (phba->link_state) {
2838         case LPFC_CLEAR_LA:
2839                                 /* CLEAR LA timeout */
2840                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2841                                  "0228 CLEAR LA timeout\n");
2842                 clrlaerr = 1;
2843                 break;
2844
2845         case LPFC_LINK_UP:
2846                 lpfc_issue_clear_la(phba, vport);
2847                 /* Drop thru */
2848         case LPFC_LINK_UNKNOWN:
2849         case LPFC_WARM_START:
2850         case LPFC_INIT_START:
2851         case LPFC_INIT_MBX_CMDS:
2852         case LPFC_LINK_DOWN:
2853         case LPFC_HBA_ERROR:
2854                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2855                                  "0230 Unexpected timeout, hba link "
2856                                  "state x%x\n", phba->link_state);
2857                 clrlaerr = 1;
2858                 break;
2859
2860         case LPFC_HBA_READY:
2861                 break;
2862         }
2863
2864         if (clrlaerr) {
2865                 lpfc_disc_flush_list(vport);
2866                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2867                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2868                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2869                 vport->port_state = LPFC_VPORT_READY;
2870         }
2871
2872         return;
2873 }
2874
2875 /*
2876  * This routine handles processing a NameServer REG_LOGIN mailbox
2877  * command upon completion. It is setup in the LPFC_MBOXQ
2878  * as the completion routine when the command is
2879  * handed off to the SLI layer.
2880  */
2881 void
2882 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2883 {
2884         MAILBOX_t *mb = &pmb->mb;
2885         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2886         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2887         struct lpfc_vport    *vport = pmb->vport;
2888
2889         pmb->context1 = NULL;
2890
2891         ndlp->nlp_rpi = mb->un.varWords[0];
2892         ndlp->nlp_type |= NLP_FABRIC;
2893         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2894
2895         /*
2896          * Start issuing Fabric-Device Management Interface (FDMI) command to
2897          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2898          * fdmi-on=2 (supporting RPA/hostnmae)
2899          */
2900
2901         if (vport->cfg_fdmi_on == 1)
2902                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2903         else
2904                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2905
2906         /* decrement the node reference count held for this callback
2907          * function.
2908          */
2909         lpfc_nlp_put(ndlp);
2910         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2911         kfree(mp);
2912         mempool_free(pmb, phba->mbox_mem_pool);
2913
2914         return;
2915 }
2916
2917 static int
2918 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2919 {
2920         uint16_t *rpi = param;
2921
2922         return ndlp->nlp_rpi == *rpi;
2923 }
2924
2925 static int
2926 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2927 {
2928         return memcmp(&ndlp->nlp_portname, param,
2929                       sizeof(ndlp->nlp_portname)) == 0;
2930 }
2931
2932 static struct lpfc_nodelist *
2933 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2934 {
2935         struct lpfc_nodelist *ndlp;
2936
2937         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2938                 if (filter(ndlp, param))
2939                         return ndlp;
2940         }
2941         return NULL;
2942 }
2943
2944 /*
2945  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2946  * returns the node list element pointer else return NULL.
2947  */
2948 struct lpfc_nodelist *
2949 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2950 {
2951         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2952 }
2953
2954 /*
2955  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2956  * returns the node element list pointer else return NULL.
2957  */
2958 struct lpfc_nodelist *
2959 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2960 {
2961         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2962         struct lpfc_nodelist *ndlp;
2963
2964         spin_lock_irq(shost->host_lock);
2965         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2966         spin_unlock_irq(shost->host_lock);
2967         return ndlp;
2968 }
2969
2970 void
2971 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2972               uint32_t did)
2973 {
2974         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2975         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2976         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2977         init_timer(&ndlp->nlp_delayfunc);
2978         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2979         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2980         ndlp->nlp_DID = did;
2981         ndlp->vport = vport;
2982         ndlp->nlp_sid = NLP_NO_SID;
2983         INIT_LIST_HEAD(&ndlp->nlp_listp);
2984         kref_init(&ndlp->kref);
2985         NLP_INT_NODE_ACT(ndlp);
2986
2987         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2988                 "node init:       did:x%x",
2989                 ndlp->nlp_DID, 0, 0);
2990
2991         return;
2992 }
2993
2994 /* This routine releases all resources associated with a specifc NPort's ndlp
2995  * and mempool_free's the nodelist.
2996  */
2997 static void
2998 lpfc_nlp_release(struct kref *kref)
2999 {
3000         struct lpfc_hba *phba;
3001         unsigned long flags;
3002         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3003                                                   kref);
3004
3005         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3006                 "node release:    did:x%x flg:x%x type:x%x",
3007                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3008
3009         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3010                         "0279 lpfc_nlp_release: ndlp:x%p "
3011                         "usgmap:x%x refcnt:%d\n",
3012                         (void *)ndlp, ndlp->nlp_usg_map,
3013                         atomic_read(&ndlp->kref.refcount));
3014
3015         /* remove ndlp from action. */
3016         lpfc_nlp_remove(ndlp->vport, ndlp);
3017
3018         /* clear the ndlp active flag for all release cases */
3019         phba = ndlp->vport->phba;
3020         spin_lock_irqsave(&phba->ndlp_lock, flags);
3021         NLP_CLR_NODE_ACT(ndlp);
3022         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3023
3024         /* free ndlp memory for final ndlp release */
3025         if (NLP_CHK_FREE_REQ(ndlp))
3026                 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3027 }
3028
3029 /* This routine bumps the reference count for a ndlp structure to ensure
3030  * that one discovery thread won't free a ndlp while another discovery thread
3031  * is using it.
3032  */
3033 struct lpfc_nodelist *
3034 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3035 {
3036         struct lpfc_hba *phba;
3037         unsigned long flags;
3038
3039         if (ndlp) {
3040                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3041                         "node get:        did:x%x flg:x%x refcnt:x%x",
3042                         ndlp->nlp_DID, ndlp->nlp_flag,
3043                         atomic_read(&ndlp->kref.refcount));
3044                 /* The check of ndlp usage to prevent incrementing the
3045                  * ndlp reference count that is in the process of being
3046                  * released.
3047                  */
3048                 phba = ndlp->vport->phba;
3049                 spin_lock_irqsave(&phba->ndlp_lock, flags);
3050                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3051                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3052                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3053                                 "0276 lpfc_nlp_get: ndlp:x%p "
3054                                 "usgmap:x%x refcnt:%d\n",
3055                                 (void *)ndlp, ndlp->nlp_usg_map,
3056                                 atomic_read(&ndlp->kref.refcount));
3057                         return NULL;
3058                 } else
3059                         kref_get(&ndlp->kref);
3060                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3061         }
3062         return ndlp;
3063 }
3064
3065 /* This routine decrements the reference count for a ndlp structure. If the
3066  * count goes to 0, this indicates the the associated nodelist should be
3067  * freed. Returning 1 indicates the ndlp resource has been released; on the
3068  * other hand, returning 0 indicates the ndlp resource has not been released
3069  * yet.
3070  */
3071 int
3072 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3073 {
3074         struct lpfc_hba *phba;
3075         unsigned long flags;
3076
3077         if (!ndlp)
3078                 return 1;
3079
3080         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3081         "node put:        did:x%x flg:x%x refcnt:x%x",
3082                 ndlp->nlp_DID, ndlp->nlp_flag,
3083                 atomic_read(&ndlp->kref.refcount));
3084         phba = ndlp->vport->phba;
3085         spin_lock_irqsave(&phba->ndlp_lock, flags);
3086         /* Check the ndlp memory free acknowledge flag to avoid the
3087          * possible race condition that kref_put got invoked again
3088          * after previous one has done ndlp memory free.
3089          */
3090         if (NLP_CHK_FREE_ACK(ndlp)) {
3091                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3092                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3093                                 "0274 lpfc_nlp_put: ndlp:x%p "
3094                                 "usgmap:x%x refcnt:%d\n",
3095                                 (void *)ndlp, ndlp->nlp_usg_map,
3096                                 atomic_read(&ndlp->kref.refcount));
3097                 return 1;
3098         }
3099         /* Check the ndlp inactivate log flag to avoid the possible
3100          * race condition that kref_put got invoked again after ndlp
3101          * is already in inactivating state.
3102          */
3103         if (NLP_CHK_IACT_REQ(ndlp)) {
3104                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3105                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3106                                 "0275 lpfc_nlp_put: ndlp:x%p "
3107                                 "usgmap:x%x refcnt:%d\n",
3108                                 (void *)ndlp, ndlp->nlp_usg_map,
3109                                 atomic_read(&ndlp->kref.refcount));
3110                 return 1;
3111         }
3112         /* For last put, mark the ndlp usage flags to make sure no
3113          * other kref_get and kref_put on the same ndlp shall get
3114          * in between the process when the final kref_put has been
3115          * invoked on this ndlp.
3116          */
3117         if (atomic_read(&ndlp->kref.refcount) == 1) {
3118                 /* Indicate ndlp is put to inactive state. */
3119                 NLP_SET_IACT_REQ(ndlp);
3120                 /* Acknowledge ndlp memory free has been seen. */
3121                 if (NLP_CHK_FREE_REQ(ndlp))
3122                         NLP_SET_FREE_ACK(ndlp);
3123         }
3124         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3125         /* Note, the kref_put returns 1 when decrementing a reference
3126          * count that was 1, it invokes the release callback function,
3127          * but it still left the reference count as 1 (not actually
3128          * performs the last decrementation). Otherwise, it actually
3129          * decrements the reference count and returns 0.
3130          */
3131         return kref_put(&ndlp->kref, lpfc_nlp_release);
3132 }
3133
3134 /* This routine free's the specified nodelist if it is not in use
3135  * by any other discovery thread. This routine returns 1 if the
3136  * ndlp has been freed. A return value of 0 indicates the ndlp is
3137  * not yet been released.
3138  */
3139 int
3140 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3141 {
3142         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3143                 "node not used:   did:x%x flg:x%x refcnt:x%x",
3144                 ndlp->nlp_DID, ndlp->nlp_flag,
3145                 atomic_read(&ndlp->kref.refcount));
3146         if (atomic_read(&ndlp->kref.refcount) == 1)
3147                 if (lpfc_nlp_put(ndlp))
3148                         return 1;
3149         return 0;
3150 }