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