drivers/scsi/lpfc/lpfc_els.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2006 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/interrupt.h>
  25
  26 #include <scsi/scsi.h>
  27 #include <scsi/scsi_device.h>
  28 #include <scsi/scsi_host.h>
  29 #include <scsi/scsi_transport_fc.h>
  30
  31 #include "lpfc_hw.h"
  32 #include "lpfc_sli.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_scsi.h"
  35 #include "lpfc.h"
  36 #include "lpfc_logmsg.h"
  37 #include "lpfc_crtn.h"
  38
  39 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
  40                           struct lpfc_iocbq *);
  41 static int lpfc_max_els_tries = 3;
  42
  43 static int
  44 lpfc_els_chk_latt(struct lpfc_hba * phba)
  45 {
  46         struct lpfc_sli *psli;
  47         LPFC_MBOXQ_t *mbox;
  48         uint32_t ha_copy;
  49         int rc;
  50
  51         psli = &phba->sli;
  52
  53         if ((phba->hba_state >= LPFC_HBA_READY) ||
  54             (phba->hba_state == LPFC_LINK_DOWN))
  55                 return 0;
  56
  57         /* Read the HBA Host Attention Register */
  58         spin_lock_irq(phba->host->host_lock);
  59         ha_copy = readl(phba->HAregaddr);
  60         spin_unlock_irq(phba->host->host_lock);
  61
  62         if (!(ha_copy & HA_LATT))
  63                 return 0;
  64
  65         /* Pending Link Event during Discovery */
  66         lpfc_printf_log(phba, KERN_WARNING, LOG_DISCOVERY,
  67                         "%d:0237 Pending Link Event during "
  68                         "Discovery: State x%x\n",
  69                         phba->brd_no, phba->hba_state);
  70
  71         /* CLEAR_LA should re-enable link attention events and
  72          * we should then imediately take a LATT event. The
  73          * LATT processing should call lpfc_linkdown() which
  74          * will cleanup any left over in-progress discovery
  75          * events.
  76          */
  77         spin_lock_irq(phba->host->host_lock);
  78         phba->fc_flag |= FC_ABORT_DISCOVERY;
  79         spin_unlock_irq(phba->host->host_lock);
  80
  81         if (phba->hba_state != LPFC_CLEAR_LA) {
  82                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
  83                         phba->hba_state = LPFC_CLEAR_LA;
  84                         lpfc_clear_la(phba, mbox);
  85                         mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
  86                         rc = lpfc_sli_issue_mbox (phba, mbox,
  87                                                   (MBX_NOWAIT | MBX_STOP_IOCB));
  88                         if (rc == MBX_NOT_FINISHED) {
  89                                 mempool_free(mbox, phba->mbox_mem_pool);
  90                                 phba->hba_state = LPFC_HBA_ERROR;
  91                         }
  92                 }
  93         }
  94
  95         return 1;
  96
  97 }
  98
  99 static struct lpfc_iocbq *
 100 lpfc_prep_els_iocb(struct lpfc_hba * phba, uint8_t expectRsp,
 101                    uint16_t cmdSize, uint8_t retry, struct lpfc_nodelist * ndlp,
 102                    uint32_t did, uint32_t elscmd)
 103 {
 104         struct lpfc_sli_ring *pring;
 105         struct lpfc_iocbq *elsiocb;
 106         struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
 107         struct ulp_bde64 *bpl;
 108         IOCB_t *icmd;
 109
 110         pring = &phba->sli.ring[LPFC_ELS_RING];
 111
 112         if (phba->hba_state < LPFC_LINK_UP)
 113                 return  NULL;
 114
 115         /* Allocate buffer for  command iocb */
 116         spin_lock_irq(phba->host->host_lock);
 117         elsiocb = lpfc_sli_get_iocbq(phba);
 118         spin_unlock_irq(phba->host->host_lock);
 119
 120         if (elsiocb == NULL)
 121                 return NULL;
 122         icmd = &elsiocb->iocb;
 123
 124         /* fill in BDEs for command */
 125         /* Allocate buffer for command payload */
 126         if (((pcmd = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
 127             ((pcmd->virt = lpfc_mbuf_alloc(phba,
 128                                            MEM_PRI, &(pcmd->phys))) == 0)) {
 129                 kfree(pcmd);
 130
 131                 spin_lock_irq(phba->host->host_lock);
 132                 lpfc_sli_release_iocbq(phba, elsiocb);
 133                 spin_unlock_irq(phba->host->host_lock);
 134                 return NULL;
 135         }
 136
 137         INIT_LIST_HEAD(&pcmd->list);
 138
 139         /* Allocate buffer for response payload */
 140         if (expectRsp) {
 141                 prsp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
 142                 if (prsp)
 143                         prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
 144                                                      &prsp->phys);
 145                 if (prsp == 0 || prsp->virt == 0) {
 146                         kfree(prsp);
 147                         lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
 148                         kfree(pcmd);
 149                         spin_lock_irq(phba->host->host_lock);
 150                         lpfc_sli_release_iocbq(phba, elsiocb);
 151                         spin_unlock_irq(phba->host->host_lock);
 152                         return NULL;
 153                 }
 154                 INIT_LIST_HEAD(&prsp->list);
 155         } else {
 156                 prsp = NULL;
 157         }
 158
 159         /* Allocate buffer for Buffer ptr list */
 160         pbuflist = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
 161         if (pbuflist)
 162             pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
 163                                              &pbuflist->phys);
 164         if (pbuflist == 0 || pbuflist->virt == 0) {
 165                 spin_lock_irq(phba->host->host_lock);
 166                 lpfc_sli_release_iocbq(phba, elsiocb);
 167                 spin_unlock_irq(phba->host->host_lock);
 168                 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
 169                 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
 170                 kfree(pcmd);
 171                 kfree(prsp);
 172                 kfree(pbuflist);
 173                 return NULL;
 174         }
 175
 176         INIT_LIST_HEAD(&pbuflist->list);
 177
 178         icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
 179         icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
 180         icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BDL;
 181         if (expectRsp) {
 182                 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
 183                 icmd->un.elsreq64.remoteID = did;       /* DID */
 184                 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
 185         } else {
 186                 icmd->un.elsreq64.bdl.bdeSize = sizeof (struct ulp_bde64);
 187                 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
 188         }
 189
 190         icmd->ulpBdeCount = 1;
 191         icmd->ulpLe = 1;
 192         icmd->ulpClass = CLASS3;
 193
 194         bpl = (struct ulp_bde64 *) pbuflist->virt;
 195         bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
 196         bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
 197         bpl->tus.f.bdeSize = cmdSize;
 198         bpl->tus.f.bdeFlags = 0;
 199         bpl->tus.w = le32_to_cpu(bpl->tus.w);
 200
 201         if (expectRsp) {
 202                 bpl++;
 203                 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
 204                 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
 205                 bpl->tus.f.bdeSize = FCELSSIZE;
 206                 bpl->tus.f.bdeFlags = BUFF_USE_RCV;
 207                 bpl->tus.w = le32_to_cpu(bpl->tus.w);
 208         }
 209
 210         /* Save for completion so we can release these resources */
 211         elsiocb->context1 = (uint8_t *) ndlp;
 212         elsiocb->context2 = (uint8_t *) pcmd;
 213         elsiocb->context3 = (uint8_t *) pbuflist;
 214         elsiocb->retry = retry;
 215         elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
 216
 217         if (prsp) {
 218                 list_add(&prsp->list, &pcmd->list);
 219         }
 220
 221         if (expectRsp) {
 222                 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
 223                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 224                                 "%d:0116 Xmit ELS command x%x to remote "
 225                                 "NPORT x%x I/O tag: x%x, HBA state: x%x\n",
 226                                 phba->brd_no, elscmd,
 227                                 did, elsiocb->iotag, phba->hba_state);
 228         } else {
 229                 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
 230                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 231                                 "%d:0117 Xmit ELS response x%x to remote "
 232                                 "NPORT x%x I/O tag: x%x, size: x%x\n",
 233                                 phba->brd_no, elscmd,
 234                                 ndlp->nlp_DID, elsiocb->iotag, cmdSize);
 235         }
 236
 237         return elsiocb;
 238 }
 239
 240
 241 static int
 242 lpfc_cmpl_els_flogi_fabric(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
 243                 struct serv_parm *sp, IOCB_t *irsp)
 244 {
 245         LPFC_MBOXQ_t *mbox;
 246         struct lpfc_dmabuf *mp;
 247         int rc;
 248
 249         spin_lock_irq(phba->host->host_lock);
 250         phba->fc_flag |= FC_FABRIC;
 251         spin_unlock_irq(phba->host->host_lock);
 252
 253         phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
 254         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
 255                 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
 256
 257         phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
 258
 259         if (phba->fc_topology == TOPOLOGY_LOOP) {
 260                 spin_lock_irq(phba->host->host_lock);
 261                 phba->fc_flag |= FC_PUBLIC_LOOP;
 262                 spin_unlock_irq(phba->host->host_lock);
 263         } else {
 264                 /*
 265                  * If we are a N-port connected to a Fabric, fixup sparam's so
 266                  * logins to devices on remote loops work.
 267                  */
 268                 phba->fc_sparam.cmn.altBbCredit = 1;
 269         }
 270
 271         phba->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
 272         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
 273         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 274         ndlp->nlp_class_sup = 0;
 275         if (sp->cls1.classValid)
 276                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 277         if (sp->cls2.classValid)
 278                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 279         if (sp->cls3.classValid)
 280                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 281         if (sp->cls4.classValid)
 282                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 283         ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 284                                 sp->cmn.bbRcvSizeLsb;
 285         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 286
 287         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 288         if (!mbox)
 289                 goto fail;
 290
 291         phba->hba_state = LPFC_FABRIC_CFG_LINK;
 292         lpfc_config_link(phba, mbox);
 293         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 294
 295         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
 296         if (rc == MBX_NOT_FINISHED)
 297                 goto fail_free_mbox;
 298
 299         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 300         if (!mbox)
 301                 goto fail;
 302
 303         if (lpfc_reg_login(phba, Fabric_DID, (uint8_t *) sp, mbox, 0))
 304                 goto fail_free_mbox;
 305
 306         mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
 307         mbox->context2 = ndlp;
 308
 309         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
 310         if (rc == MBX_NOT_FINISHED)
 311                 goto fail_issue_reg_login;
 312
 313         return 0;
 314
 315  fail_issue_reg_login:
 316         mp = (struct lpfc_dmabuf *) mbox->context1;
 317         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 318         kfree(mp);
 319  fail_free_mbox:
 320         mempool_free(mbox, phba->mbox_mem_pool);
 321  fail:
 322         return -ENXIO;
 323 }
 324
 325 /*
 326  * We FLOGIed into an NPort, initiate pt2pt protocol
 327  */
 328 static int
 329 lpfc_cmpl_els_flogi_nport(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
 330                 struct serv_parm *sp)
 331 {
 332         LPFC_MBOXQ_t *mbox;
 333         int rc;
 334
 335         spin_lock_irq(phba->host->host_lock);
 336         phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 337         spin_unlock_irq(phba->host->host_lock);
 338
 339         phba->fc_edtov = FF_DEF_EDTOV;
 340         phba->fc_ratov = FF_DEF_RATOV;
 341         rc = memcmp(&phba->fc_portname, &sp->portName,
 342                         sizeof(struct lpfc_name));
 343         if (rc >= 0) {
 344                 /* This side will initiate the PLOGI */
 345                 spin_lock_irq(phba->host->host_lock);
 346                 phba->fc_flag |= FC_PT2PT_PLOGI;
 347                 spin_unlock_irq(phba->host->host_lock);
 348
 349                 /*
 350                  * N_Port ID cannot be 0, set our to LocalID the other
 351                  * side will be RemoteID.
 352                  */
 353
 354                 /* not equal */
 355                 if (rc)
 356                         phba->fc_myDID = PT2PT_LocalID;
 357
 358                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 359                 if (!mbox)
 360                         goto fail;
 361
 362                 lpfc_config_link(phba, mbox);
 363
 364                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 365                 rc = lpfc_sli_issue_mbox(phba, mbox,
 366                                 MBX_NOWAIT | MBX_STOP_IOCB);
 367                 if (rc == MBX_NOT_FINISHED) {
 368                         mempool_free(mbox, phba->mbox_mem_pool);
 369                         goto fail;
 370                 }
 371                 mempool_free(ndlp, phba->nlp_mem_pool);
 372
 373                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, PT2PT_RemoteID);
 374                 if (!ndlp) {
 375                         /*
 376                          * Cannot find existing Fabric ndlp, so allocate a
 377                          * new one
 378                          */
 379                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 380                         if (!ndlp)
 381                                 goto fail;
 382
 383                         lpfc_nlp_init(phba, ndlp, PT2PT_RemoteID);
 384                 }
 385
 386                 memcpy(&ndlp->nlp_portname, &sp->portName,
 387                                 sizeof(struct lpfc_name));
 388                 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
 389                                 sizeof(struct lpfc_name));
 390                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 391                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 392         } else {
 393                 /* This side will wait for the PLOGI */
 394                 mempool_free( ndlp, phba->nlp_mem_pool);
 395         }
 396
 397         spin_lock_irq(phba->host->host_lock);
 398         phba->fc_flag |= FC_PT2PT;
 399         spin_unlock_irq(phba->host->host_lock);
 400
 401         /* Start discovery - this should just do CLEAR_LA */
 402         lpfc_disc_start(phba);
 403         return 0;
 404  fail:
 405         return -ENXIO;
 406 }
 407
 408 static void
 409 lpfc_cmpl_els_flogi(struct lpfc_hba * phba,
 410                     struct lpfc_iocbq * cmdiocb, struct lpfc_iocbq * rspiocb)
 411 {
 412         IOCB_t *irsp = &rspiocb->iocb;
 413         struct lpfc_nodelist *ndlp = cmdiocb->context1;
 414         struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
 415         struct serv_parm *sp;
 416         int rc;
 417
 418         /* Check to see if link went down during discovery */
 419         if (lpfc_els_chk_latt(phba)) {
 420                 lpfc_nlp_remove(phba, ndlp);
 421                 goto out;
 422         }
 423
 424         if (irsp->ulpStatus) {
 425                 /* Check for retry */
 426                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 427                         /* ELS command is being retried */
 428                         goto out;
 429                 }
 430                 /* FLOGI failed, so there is no fabric */
 431                 spin_lock_irq(phba->host->host_lock);
 432                 phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 433                 spin_unlock_irq(phba->host->host_lock);
 434
 435                 /* If private loop, then allow max outstandting els to be
 436                  * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
 437                  * alpa map would take too long otherwise.
 438                  */
 439                 if (phba->alpa_map[0] == 0) {
 440                         phba->cfg_discovery_threads =
 441                             LPFC_MAX_DISC_THREADS;
 442                 }
 443
 444                 /* FLOGI failure */
 445                 lpfc_printf_log(phba,
 446                                 KERN_INFO,
 447                                 LOG_ELS,
 448                                 "%d:0100 FLOGI failure Data: x%x x%x x%x\n",
 449                                 phba->brd_no,
 450                                 irsp->ulpStatus, irsp->un.ulpWord[4],
 451                                 irsp->ulpTimeout);
 452                 goto flogifail;
 453         }
 454
 455         /*
 456          * The FLogI succeeded.  Sync the data for the CPU before
 457          * accessing it.
 458          */
 459         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 460
 461         sp = prsp->virt + sizeof(uint32_t);
 462
 463         /* FLOGI completes successfully */
 464         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 465                         "%d:0101 FLOGI completes sucessfully "
 466                         "Data: x%x x%x x%x x%x\n",
 467                         phba->brd_no,
 468                         irsp->un.ulpWord[4], sp->cmn.e_d_tov,
 469                         sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
 470
 471         if (phba->hba_state == LPFC_FLOGI) {
 472                 /*
 473                  * If Common Service Parameters indicate Nport
 474                  * we are point to point, if Fport we are Fabric.
 475                  */
 476                 if (sp->cmn.fPort)
 477                         rc = lpfc_cmpl_els_flogi_fabric(phba, ndlp, sp, irsp);
 478                 else
 479                         rc = lpfc_cmpl_els_flogi_nport(phba, ndlp, sp);
 480
 481                 if (!rc)
 482                         goto out;
 483         }
 484
 485 flogifail:
 486         lpfc_nlp_remove(phba, ndlp);
 487
 488         if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
 489             (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED &&
 490              irsp->un.ulpWord[4] != IOERR_SLI_DOWN)) {
 491                 /* FLOGI failed, so just use loop map to make discovery list */
 492                 lpfc_disc_list_loopmap(phba);
 493
 494                 /* Start discovery */
 495                 lpfc_disc_start(phba);
 496         }
 497
 498 out:
 499         lpfc_els_free_iocb(phba, cmdiocb);
 500 }
 501
 502 static int
 503 lpfc_issue_els_flogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 504                      uint8_t retry)
 505 {
 506         struct serv_parm *sp;
 507         IOCB_t *icmd;
 508         struct lpfc_iocbq *elsiocb;
 509         struct lpfc_sli_ring *pring;
 510         uint8_t *pcmd;
 511         uint16_t cmdsize;
 512         uint32_t tmo;
 513         int rc;
 514
 515         pring = &phba->sli.ring[LPFC_ELS_RING];
 516
 517         cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
 518         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
 519                                                  ndlp->nlp_DID, ELS_CMD_FLOGI);
 520         if (!elsiocb)
 521                 return 1;
 522
 523         icmd = &elsiocb->iocb;
 524         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 525
 526         /* For FLOGI request, remainder of payload is service parameters */
 527         *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
 528         pcmd += sizeof (uint32_t);
 529         memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
 530         sp = (struct serv_parm *) pcmd;
 531
 532         /* Setup CSPs accordingly for Fabric */
 533         sp->cmn.e_d_tov = 0;
 534         sp->cmn.w2.r_a_tov = 0;
 535         sp->cls1.classValid = 0;
 536         sp->cls2.seqDelivery = 1;
 537         sp->cls3.seqDelivery = 1;
 538         if (sp->cmn.fcphLow < FC_PH3)
 539                 sp->cmn.fcphLow = FC_PH3;
 540         if (sp->cmn.fcphHigh < FC_PH3)
 541                 sp->cmn.fcphHigh = FC_PH3;
 542
 543         tmo = phba->fc_ratov;
 544         phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
 545         lpfc_set_disctmo(phba);
 546         phba->fc_ratov = tmo;
 547
 548         phba->fc_stat.elsXmitFLOGI++;
 549         elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
 550         spin_lock_irq(phba->host->host_lock);
 551         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
 552         spin_unlock_irq(phba->host->host_lock);
 553         if (rc == IOCB_ERROR) {
 554                 lpfc_els_free_iocb(phba, elsiocb);
 555                 return 1;
 556         }
 557         return 0;
 558 }
 559
 560 int
 561 lpfc_els_abort_flogi(struct lpfc_hba * phba)
 562 {
 563         struct lpfc_sli_ring *pring;
 564         struct lpfc_iocbq *iocb, *next_iocb;
 565         struct lpfc_nodelist *ndlp;
 566         IOCB_t *icmd;
 567
 568         /* Abort outstanding I/O on NPort <nlp_DID> */
 569         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 570                         "%d:0201 Abort outstanding I/O on NPort x%x\n",
 571                         phba->brd_no, Fabric_DID);
 572
 573         pring = &phba->sli.ring[LPFC_ELS_RING];
 574
 575         /*
 576          * Check the txcmplq for an iocb that matches the nport the driver is
 577          * searching for.
 578          */
 579         spin_lock_irq(phba->host->host_lock);
 580         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 581                 icmd = &iocb->iocb;
 582                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
 583                         ndlp = (struct lpfc_nodelist *)(iocb->context1);
 584                         if (ndlp && (ndlp->nlp_DID == Fabric_DID))
 585                                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 586                 }
 587         }
 588         spin_unlock_irq(phba->host->host_lock);
 589
 590         return 0;
 591 }
 592
 593 int
 594 lpfc_initial_flogi(struct lpfc_hba * phba)
 595 {
 596         struct lpfc_nodelist *ndlp;
 597
 598         /* First look for the Fabric ndlp */
 599         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, Fabric_DID);
 600         if (!ndlp) {
 601                 /* Cannot find existing Fabric ndlp, so allocate a new one */
 602                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 603                 if (!ndlp)
 604                         return 0;
 605                 lpfc_nlp_init(phba, ndlp, Fabric_DID);
 606         } else {
 607                 lpfc_dequeue_node(phba, ndlp);
 608         }
 609         if (lpfc_issue_els_flogi(phba, ndlp, 0)) {
 610                 mempool_free( ndlp, phba->nlp_mem_pool);
 611         }
 612         return 1;
 613 }
 614
 615 static void
 616 lpfc_more_plogi(struct lpfc_hba * phba)
 617 {
 618         int sentplogi;
 619
 620         if (phba->num_disc_nodes)
 621                 phba->num_disc_nodes--;
 622
 623         /* Continue discovery with <num_disc_nodes> PLOGIs to go */
 624         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 625                         "%d:0232 Continue discovery with %d PLOGIs to go "
 626                         "Data: x%x x%x x%x\n",
 627                         phba->brd_no, phba->num_disc_nodes, phba->fc_plogi_cnt,
 628                         phba->fc_flag, phba->hba_state);
 629
 630         /* Check to see if there are more PLOGIs to be sent */
 631         if (phba->fc_flag & FC_NLP_MORE) {
 632                 /* go thru NPR list and issue any remaining ELS PLOGIs */
 633                 sentplogi = lpfc_els_disc_plogi(phba);
 634         }
 635         return;
 636 }
 637
 638 static struct lpfc_nodelist *
 639 lpfc_plogi_confirm_nport(struct lpfc_hba * phba, struct lpfc_dmabuf *prsp,
 640                          struct lpfc_nodelist *ndlp)
 641 {
 642         struct lpfc_nodelist *new_ndlp;
 643         uint32_t *lp;
 644         struct serv_parm *sp;
 645         uint8_t name[sizeof (struct lpfc_name)];
 646         uint32_t rc;
 647
 648         /* Fabric nodes can have the same WWPN so we don't bother searching
 649          * by WWPN.  Just return the ndlp that was given to us.
 650          */
 651         if (ndlp->nlp_type & NLP_FABRIC)
 652                 return ndlp;
 653
 654         lp = (uint32_t *) prsp->virt;
 655         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 656         memset(name, 0, sizeof (struct lpfc_name));
 657
 658         /* Now we to find out if the NPort we are logging into, matches the WWPN
 659          * we have for that ndlp. If not, we have some work to do.
 660          */
 661         new_ndlp = lpfc_findnode_wwpn(phba, NLP_SEARCH_ALL, &sp->portName);
 662
 663         if (new_ndlp == ndlp)
 664                 return ndlp;
 665
 666         if (!new_ndlp) {
 667                 rc =
 668                    memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name));
 669                 if (!rc)
 670                         return ndlp;
 671                 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
 672                 if (!new_ndlp)
 673                         return ndlp;
 674
 675                 lpfc_nlp_init(phba, new_ndlp, ndlp->nlp_DID);
 676         }
 677
 678         lpfc_unreg_rpi(phba, new_ndlp);
 679         new_ndlp->nlp_DID = ndlp->nlp_DID;
 680         new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
 681         lpfc_nlp_set_state(phba, new_ndlp, ndlp->nlp_state);
 682
 683         /* Move this back to NPR list */
 684         if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0)
 685                 lpfc_drop_node(phba, ndlp);
 686         else {
 687                 lpfc_unreg_rpi(phba, ndlp);
 688                 ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */
 689                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 690         }
 691         return new_ndlp;
 692 }
 693
 694 static void
 695 lpfc_cmpl_els_plogi(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 696                     struct lpfc_iocbq * rspiocb)
 697 {
 698         IOCB_t *irsp;
 699         struct lpfc_nodelist *ndlp;
 700         struct lpfc_dmabuf *prsp;
 701         int disc, rc, did, type;
 702
 703         /* we pass cmdiocb to state machine which needs rspiocb as well */
 704         cmdiocb->context_un.rsp_iocb = rspiocb;
 705
 706         irsp = &rspiocb->iocb;
 707         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL,
 708                                                 irsp->un.elsreq64.remoteID);
 709         if (!ndlp)
 710                 goto out;
 711
 712         /* Since ndlp can be freed in the disc state machine, note if this node
 713          * is being used during discovery.
 714          */
 715         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
 716         spin_lock_irq(phba->host->host_lock);
 717         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 718         spin_unlock_irq(phba->host->host_lock);
 719         rc   = 0;
 720
 721         /* PLOGI completes to NPort <nlp_DID> */
 722         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 723                         "%d:0102 PLOGI completes to NPort x%x "
 724                         "Data: x%x x%x x%x x%x x%x\n",
 725                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
 726                         irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
 727                         phba->num_disc_nodes);
 728
 729         /* Check to see if link went down during discovery */
 730         if (lpfc_els_chk_latt(phba)) {
 731                 spin_lock_irq(phba->host->host_lock);
 732                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 733                 spin_unlock_irq(phba->host->host_lock);
 734                 goto out;
 735         }
 736
 737         /* ndlp could be freed in DSM, save these values now */
 738         type = ndlp->nlp_type;
 739         did = ndlp->nlp_DID;
 740
 741         if (irsp->ulpStatus) {
 742                 /* Check for retry */
 743                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 744                         /* ELS command is being retried */
 745                         if (disc) {
 746                                 spin_lock_irq(phba->host->host_lock);
 747                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 748                                 spin_unlock_irq(phba->host->host_lock);
 749                         }
 750                         goto out;
 751                 }
 752
 753                 /* PLOGI failed */
 754                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
 755                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
 756                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
 757                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
 758                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
 759                         rc = NLP_STE_FREED_NODE;
 760                 } else {
 761                         rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 762                                         NLP_EVT_CMPL_PLOGI);
 763                 }
 764         } else {
 765                 /* Good status, call state machine */
 766                 prsp = list_entry(((struct lpfc_dmabuf *)
 767                         cmdiocb->context2)->list.next,
 768                         struct lpfc_dmabuf, list);
 769                 ndlp = lpfc_plogi_confirm_nport(phba, prsp, ndlp);
 770                 rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 771                                         NLP_EVT_CMPL_PLOGI);
 772         }
 773
 774         if (disc && phba->num_disc_nodes) {
 775                 /* Check to see if there are more PLOGIs to be sent */
 776                 lpfc_more_plogi(phba);
 777
 778                 if (phba->num_disc_nodes == 0) {
 779                         spin_lock_irq(phba->host->host_lock);
 780                         phba->fc_flag &= ~FC_NDISC_ACTIVE;
 781                         spin_unlock_irq(phba->host->host_lock);
 782
 783                         lpfc_can_disctmo(phba);
 784                         if (phba->fc_flag & FC_RSCN_MODE) {
 785                                 /*
 786                                  * Check to see if more RSCNs came in while
 787                                  * we were processing this one.
 788                                  */
 789                                 if ((phba->fc_rscn_id_cnt == 0) &&
 790                                 (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
 791                                         spin_lock_irq(phba->host->host_lock);
 792                                         phba->fc_flag &= ~FC_RSCN_MODE;
 793                                         spin_unlock_irq(phba->host->host_lock);
 794                                 } else {
 795                                         lpfc_els_handle_rscn(phba);
 796                                 }
 797                         }
 798                 }
 799         }
 800
 801 out:
 802         lpfc_els_free_iocb(phba, cmdiocb);
 803         return;
 804 }
 805
 806 int
 807 lpfc_issue_els_plogi(struct lpfc_hba * phba, uint32_t did, uint8_t retry)
 808 {
 809         struct serv_parm *sp;
 810         IOCB_t *icmd;
 811         struct lpfc_iocbq *elsiocb;
 812         struct lpfc_sli_ring *pring;
 813         struct lpfc_sli *psli;
 814         uint8_t *pcmd;
 815         uint16_t cmdsize;
 816
 817         psli = &phba->sli;
 818         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 819
 820         cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
 821         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, NULL, did,
 822                                                                 ELS_CMD_PLOGI);
 823         if (!elsiocb)
 824                 return 1;
 825
 826         icmd = &elsiocb->iocb;
 827         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 828
 829         /* For PLOGI request, remainder of payload is service parameters */
 830         *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
 831         pcmd += sizeof (uint32_t);
 832         memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
 833         sp = (struct serv_parm *) pcmd;
 834
 835         if (sp->cmn.fcphLow < FC_PH_4_3)
 836                 sp->cmn.fcphLow = FC_PH_4_3;
 837
 838         if (sp->cmn.fcphHigh < FC_PH3)
 839                 sp->cmn.fcphHigh = FC_PH3;
 840
 841         phba->fc_stat.elsXmitPLOGI++;
 842         elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
 843         spin_lock_irq(phba->host->host_lock);
 844         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
 845                 spin_unlock_irq(phba->host->host_lock);
 846                 lpfc_els_free_iocb(phba, elsiocb);
 847                 return 1;
 848         }
 849         spin_unlock_irq(phba->host->host_lock);
 850         return 0;
 851 }
 852
 853 static void
 854 lpfc_cmpl_els_prli(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 855                    struct lpfc_iocbq * rspiocb)
 856 {
 857         IOCB_t *irsp;
 858         struct lpfc_sli *psli;
 859         struct lpfc_nodelist *ndlp;
 860
 861         psli = &phba->sli;
 862         /* we pass cmdiocb to state machine which needs rspiocb as well */
 863         cmdiocb->context_un.rsp_iocb = rspiocb;
 864
 865         irsp = &(rspiocb->iocb);
 866         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
 867         spin_lock_irq(phba->host->host_lock);
 868         ndlp->nlp_flag &= ~NLP_PRLI_SND;
 869         spin_unlock_irq(phba->host->host_lock);
 870
 871         /* PRLI completes to NPort <nlp_DID> */
 872         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 873                         "%d:0103 PRLI completes to NPort x%x "
 874                         "Data: x%x x%x x%x x%x\n",
 875                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
 876                         irsp->un.ulpWord[4], irsp->ulpTimeout,
 877                         phba->num_disc_nodes);
 878
 879         phba->fc_prli_sent--;
 880         /* Check to see if link went down during discovery */
 881         if (lpfc_els_chk_latt(phba))
 882                 goto out;
 883
 884         if (irsp->ulpStatus) {
 885                 /* Check for retry */
 886                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 887                         /* ELS command is being retried */
 888                         goto out;
 889                 }
 890                 /* PRLI failed */
 891                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
 892                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
 893                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
 894                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
 895                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
 896                         goto out;
 897                 } else {
 898                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 899                                         NLP_EVT_CMPL_PRLI);
 900                 }
 901         } else {
 902                 /* Good status, call state machine */
 903                 lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI);
 904         }
 905
 906 out:
 907         lpfc_els_free_iocb(phba, cmdiocb);
 908         return;
 909 }
 910
 911 int
 912 lpfc_issue_els_prli(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 913                     uint8_t retry)
 914 {
 915         PRLI *npr;
 916         IOCB_t *icmd;
 917         struct lpfc_iocbq *elsiocb;
 918         struct lpfc_sli_ring *pring;
 919         struct lpfc_sli *psli;
 920         uint8_t *pcmd;
 921         uint16_t cmdsize;
 922
 923         psli = &phba->sli;
 924         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 925
 926         cmdsize = (sizeof (uint32_t) + sizeof (PRLI));
 927         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
 928                                         ndlp->nlp_DID, ELS_CMD_PRLI);
 929         if (!elsiocb)
 930                 return 1;
 931
 932         icmd = &elsiocb->iocb;
 933         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 934
 935         /* For PRLI request, remainder of payload is service parameters */
 936         memset(pcmd, 0, (sizeof (PRLI) + sizeof (uint32_t)));
 937         *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
 938         pcmd += sizeof (uint32_t);
 939
 940         /* For PRLI, remainder of payload is PRLI parameter page */
 941         npr = (PRLI *) pcmd;
 942         /*
 943          * If our firmware version is 3.20 or later,
 944          * set the following bits for FC-TAPE support.
 945          */
 946         if (phba->vpd.rev.feaLevelHigh >= 0x02) {
 947                 npr->ConfmComplAllowed = 1;
 948                 npr->Retry = 1;
 949                 npr->TaskRetryIdReq = 1;
 950         }
 951         npr->estabImagePair = 1;
 952         npr->readXferRdyDis = 1;
 953
 954         /* For FCP support */
 955         npr->prliType = PRLI_FCP_TYPE;
 956         npr->initiatorFunc = 1;
 957
 958         phba->fc_stat.elsXmitPRLI++;
 959         elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
 960         spin_lock_irq(phba->host->host_lock);
 961         ndlp->nlp_flag |= NLP_PRLI_SND;
 962         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
 963                 ndlp->nlp_flag &= ~NLP_PRLI_SND;
 964                 spin_unlock_irq(phba->host->host_lock);
 965                 lpfc_els_free_iocb(phba, elsiocb);
 966                 return 1;
 967         }
 968         spin_unlock_irq(phba->host->host_lock);
 969         phba->fc_prli_sent++;
 970         return 0;
 971 }
 972
 973 static void
 974 lpfc_more_adisc(struct lpfc_hba * phba)
 975 {
 976         int sentadisc;
 977
 978         if (phba->num_disc_nodes)
 979                 phba->num_disc_nodes--;
 980
 981         /* Continue discovery with <num_disc_nodes> ADISCs to go */
 982         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 983                         "%d:0210 Continue discovery with %d ADISCs to go "
 984                         "Data: x%x x%x x%x\n",
 985                         phba->brd_no, phba->num_disc_nodes, phba->fc_adisc_cnt,
 986                         phba->fc_flag, phba->hba_state);
 987
 988         /* Check to see if there are more ADISCs to be sent */
 989         if (phba->fc_flag & FC_NLP_MORE) {
 990                 lpfc_set_disctmo(phba);
 991
 992                 /* go thru NPR list and issue any remaining ELS ADISCs */
 993                 sentadisc = lpfc_els_disc_adisc(phba);
 994         }
 995         return;
 996 }
 997
 998 static void
 999 lpfc_rscn_disc(struct lpfc_hba * phba)
1000 {
1001         /* RSCN discovery */
1002         /* go thru NPR list and issue ELS PLOGIs */
1003         if (phba->fc_npr_cnt) {
1004                 if (lpfc_els_disc_plogi(phba))
1005                         return;
1006         }
1007         if (phba->fc_flag & FC_RSCN_MODE) {
1008                 /* Check to see if more RSCNs came in while we were
1009                  * processing this one.
1010                  */
1011                 if ((phba->fc_rscn_id_cnt == 0) &&
1012                     (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
1013                         spin_lock_irq(phba->host->host_lock);
1014                         phba->fc_flag &= ~FC_RSCN_MODE;
1015                         spin_unlock_irq(phba->host->host_lock);
1016                 } else {
1017                         lpfc_els_handle_rscn(phba);
1018                 }
1019         }
1020 }
1021
1022 static void
1023 lpfc_cmpl_els_adisc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1024                     struct lpfc_iocbq * rspiocb)
1025 {
1026         IOCB_t *irsp;
1027         struct lpfc_sli *psli;
1028         struct lpfc_nodelist *ndlp;
1029         LPFC_MBOXQ_t *mbox;
1030         int disc, rc;
1031
1032         psli = &phba->sli;
1033
1034         /* we pass cmdiocb to state machine which needs rspiocb as well */
1035         cmdiocb->context_un.rsp_iocb = rspiocb;
1036
1037         irsp = &(rspiocb->iocb);
1038         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1039
1040         /* Since ndlp can be freed in the disc state machine, note if this node
1041          * is being used during discovery.
1042          */
1043         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1044         spin_lock_irq(phba->host->host_lock);
1045         ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1046         spin_unlock_irq(phba->host->host_lock);
1047
1048         /* ADISC completes to NPort <nlp_DID> */
1049         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1050                         "%d:0104 ADISC completes to NPort x%x "
1051                         "Data: x%x x%x x%x x%x x%x\n",
1052                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1053                         irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
1054                         phba->num_disc_nodes);
1055
1056         /* Check to see if link went down during discovery */
1057         if (lpfc_els_chk_latt(phba)) {
1058                 spin_lock_irq(phba->host->host_lock);
1059                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1060                 spin_unlock_irq(phba->host->host_lock);
1061                 goto out;
1062         }
1063
1064         if (irsp->ulpStatus) {
1065                 /* Check for retry */
1066                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1067                         /* ELS command is being retried */
1068                         if (disc) {
1069                                 spin_lock_irq(phba->host->host_lock);
1070                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1071                                 spin_unlock_irq(phba->host->host_lock);
1072                                 lpfc_set_disctmo(phba);
1073                         }
1074                         goto out;
1075                 }
1076                 /* ADISC failed */
1077                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1078                 if ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
1079                    ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
1080                    (irsp->un.ulpWord[4] != IOERR_LINK_DOWN) &&
1081                    (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) {
1082                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1083                                         NLP_EVT_CMPL_ADISC);
1084                 }
1085         } else {
1086                 /* Good status, call state machine */
1087                 lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1088                                         NLP_EVT_CMPL_ADISC);
1089         }
1090
1091         if (disc && phba->num_disc_nodes) {
1092                 /* Check to see if there are more ADISCs to be sent */
1093                 lpfc_more_adisc(phba);
1094
1095                 /* Check to see if we are done with ADISC authentication */
1096                 if (phba->num_disc_nodes == 0) {
1097                         lpfc_can_disctmo(phba);
1098                         /* If we get here, there is nothing left to wait for */
1099                         if ((phba->hba_state < LPFC_HBA_READY) &&
1100                             (phba->hba_state != LPFC_CLEAR_LA)) {
1101                                 /* Link up discovery */
1102                                 if ((mbox = mempool_alloc(phba->mbox_mem_pool,
1103                                                           GFP_KERNEL))) {
1104                                         phba->hba_state = LPFC_CLEAR_LA;
1105                                         lpfc_clear_la(phba, mbox);
1106                                         mbox->mbox_cmpl =
1107                                             lpfc_mbx_cmpl_clear_la;
1108                                         rc = lpfc_sli_issue_mbox
1109                                                 (phba, mbox,
1110                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
1111                                         if (rc == MBX_NOT_FINISHED) {
1112                                                 mempool_free(mbox,
1113                                                      phba->mbox_mem_pool);
1114                                                 lpfc_disc_flush_list(phba);
1115                                                 psli->ring[(psli->extra_ring)].
1116                                                     flag &=
1117                                                     ~LPFC_STOP_IOCB_EVENT;
1118                                                 psli->ring[(psli->fcp_ring)].
1119                                                     flag &=
1120                                                     ~LPFC_STOP_IOCB_EVENT;
1121                                                 psli->ring[(psli->next_ring)].
1122                                                     flag &=
1123                                                     ~LPFC_STOP_IOCB_EVENT;
1124                                                 phba->hba_state =
1125                                                     LPFC_HBA_READY;
1126                                         }
1127                                 }
1128                         } else {
1129                                 lpfc_rscn_disc(phba);
1130                         }
1131                 }
1132         }
1133 out:
1134         lpfc_els_free_iocb(phba, cmdiocb);
1135         return;
1136 }
1137
1138 int
1139 lpfc_issue_els_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
1140                      uint8_t retry)
1141 {
1142         ADISC *ap;
1143         IOCB_t *icmd;
1144         struct lpfc_iocbq *elsiocb;
1145         struct lpfc_sli_ring *pring;
1146         struct lpfc_sli *psli;
1147         uint8_t *pcmd;
1148         uint16_t cmdsize;
1149
1150         psli = &phba->sli;
1151         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1152
1153         cmdsize = (sizeof (uint32_t) + sizeof (ADISC));
1154         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1155                                                 ndlp->nlp_DID, ELS_CMD_ADISC);
1156         if (!elsiocb)
1157                 return 1;
1158
1159         icmd = &elsiocb->iocb;
1160         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1161
1162         /* For ADISC request, remainder of payload is service parameters */
1163         *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1164         pcmd += sizeof (uint32_t);
1165
1166         /* Fill in ADISC payload */
1167         ap = (ADISC *) pcmd;
1168         ap->hardAL_PA = phba->fc_pref_ALPA;
1169         memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
1170         memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1171         ap->DID = be32_to_cpu(phba->fc_myDID);
1172
1173         phba->fc_stat.elsXmitADISC++;
1174         elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
1175         spin_lock_irq(phba->host->host_lock);
1176         ndlp->nlp_flag |= NLP_ADISC_SND;
1177         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1178                 ndlp->nlp_flag &= ~NLP_ADISC_SND;
1179                 spin_unlock_irq(phba->host->host_lock);
1180                 lpfc_els_free_iocb(phba, elsiocb);
1181                 return 1;
1182         }
1183         spin_unlock_irq(phba->host->host_lock);
1184         return 0;
1185 }
1186
1187 static void
1188 lpfc_cmpl_els_logo(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1189                    struct lpfc_iocbq * rspiocb)
1190 {
1191         IOCB_t *irsp;
1192         struct lpfc_sli *psli;
1193         struct lpfc_nodelist *ndlp;
1194
1195         psli = &phba->sli;
1196         /* we pass cmdiocb to state machine which needs rspiocb as well */
1197         cmdiocb->context_un.rsp_iocb = rspiocb;
1198
1199         irsp = &(rspiocb->iocb);
1200         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1201         spin_lock_irq(phba->host->host_lock);
1202         ndlp->nlp_flag &= ~NLP_LOGO_SND;
1203         spin_unlock_irq(phba->host->host_lock);
1204
1205         /* LOGO completes to NPort <nlp_DID> */
1206         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1207                         "%d:0105 LOGO completes to NPort x%x "
1208                         "Data: x%x x%x x%x x%x\n",
1209                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1210                         irsp->un.ulpWord[4], irsp->ulpTimeout,
1211                         phba->num_disc_nodes);
1212
1213         /* Check to see if link went down during discovery */
1214         if (lpfc_els_chk_latt(phba))
1215                 goto out;
1216
1217         if (irsp->ulpStatus) {
1218                 /* Check for retry */
1219                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1220                         /* ELS command is being retried */
1221                         goto out;
1222                 }
1223                 /* LOGO failed */
1224                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1225                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1226                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
1227                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
1228                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
1229                         goto out;
1230                 } else {
1231                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1232                                         NLP_EVT_CMPL_LOGO);
1233                 }
1234         } else {
1235                 /* Good status, call state machine.
1236                  * This will unregister the rpi if needed.
1237                  */
1238                 lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
1239         }
1240
1241 out:
1242         lpfc_els_free_iocb(phba, cmdiocb);
1243         return;
1244 }
1245
1246 int
1247 lpfc_issue_els_logo(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
1248                     uint8_t retry)
1249 {
1250         IOCB_t *icmd;
1251         struct lpfc_iocbq *elsiocb;
1252         struct lpfc_sli_ring *pring;
1253         struct lpfc_sli *psli;
1254         uint8_t *pcmd;
1255         uint16_t cmdsize;
1256
1257         psli = &phba->sli;
1258         pring = &psli->ring[LPFC_ELS_RING];
1259
1260         cmdsize = (2 * sizeof (uint32_t)) + sizeof (struct lpfc_name);
1261         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1262                                                 ndlp->nlp_DID, ELS_CMD_LOGO);
1263         if (!elsiocb)
1264                 return 1;
1265
1266         icmd = &elsiocb->iocb;
1267         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1268         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
1269         pcmd += sizeof (uint32_t);
1270
1271         /* Fill in LOGO payload */
1272         *((uint32_t *) (pcmd)) = be32_to_cpu(phba->fc_myDID);
1273         pcmd += sizeof (uint32_t);
1274         memcpy(pcmd, &phba->fc_portname, sizeof (struct lpfc_name));
1275
1276         phba->fc_stat.elsXmitLOGO++;
1277         elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
1278         spin_lock_irq(phba->host->host_lock);
1279         ndlp->nlp_flag |= NLP_LOGO_SND;
1280         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1281                 ndlp->nlp_flag &= ~NLP_LOGO_SND;
1282                 spin_unlock_irq(phba->host->host_lock);
1283                 lpfc_els_free_iocb(phba, elsiocb);
1284                 return 1;
1285         }
1286         spin_unlock_irq(phba->host->host_lock);
1287         return 0;
1288 }
1289
1290 static void
1291 lpfc_cmpl_els_cmd(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1292                   struct lpfc_iocbq * rspiocb)
1293 {
1294         IOCB_t *irsp;
1295
1296         irsp = &rspiocb->iocb;
1297
1298         /* ELS cmd tag <ulpIoTag> completes */
1299         lpfc_printf_log(phba,
1300                         KERN_INFO,
1301                         LOG_ELS,
1302                         "%d:0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
1303                         phba->brd_no,
1304                         irsp->ulpIoTag, irsp->ulpStatus,
1305                         irsp->un.ulpWord[4], irsp->ulpTimeout);
1306
1307         /* Check to see if link went down during discovery */
1308         lpfc_els_chk_latt(phba);
1309         lpfc_els_free_iocb(phba, cmdiocb);
1310         return;
1311 }
1312
1313 int
1314 lpfc_issue_els_scr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
1315 {
1316         IOCB_t *icmd;
1317         struct lpfc_iocbq *elsiocb;
1318         struct lpfc_sli_ring *pring;
1319         struct lpfc_sli *psli;
1320         uint8_t *pcmd;
1321         uint16_t cmdsize;
1322         struct lpfc_nodelist *ndlp;
1323
1324         psli = &phba->sli;
1325         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1326         cmdsize = (sizeof (uint32_t) + sizeof (SCR));
1327         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1328         if (!ndlp)
1329                 return 1;
1330
1331         lpfc_nlp_init(phba, ndlp, nportid);
1332
1333         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1334                                                 ndlp->nlp_DID, ELS_CMD_SCR);
1335         if (!elsiocb) {
1336                 mempool_free( ndlp, phba->nlp_mem_pool);
1337                 return 1;
1338         }
1339
1340         icmd = &elsiocb->iocb;
1341         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1342
1343         *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
1344         pcmd += sizeof (uint32_t);
1345
1346         /* For SCR, remainder of payload is SCR parameter page */
1347         memset(pcmd, 0, sizeof (SCR));
1348         ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
1349
1350         phba->fc_stat.elsXmitSCR++;
1351         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
1352         spin_lock_irq(phba->host->host_lock);
1353         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1354                 spin_unlock_irq(phba->host->host_lock);
1355                 mempool_free( ndlp, phba->nlp_mem_pool);
1356                 lpfc_els_free_iocb(phba, elsiocb);
1357                 return 1;
1358         }
1359         spin_unlock_irq(phba->host->host_lock);
1360         mempool_free( ndlp, phba->nlp_mem_pool);
1361         return 0;
1362 }
1363
1364 static int
1365 lpfc_issue_els_farpr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
1366 {
1367         IOCB_t *icmd;
1368         struct lpfc_iocbq *elsiocb;
1369         struct lpfc_sli_ring *pring;
1370         struct lpfc_sli *psli;
1371         FARP *fp;
1372         uint8_t *pcmd;
1373         uint32_t *lp;
1374         uint16_t cmdsize;
1375         struct lpfc_nodelist *ondlp;
1376         struct lpfc_nodelist *ndlp;
1377
1378         psli = &phba->sli;
1379         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1380         cmdsize = (sizeof (uint32_t) + sizeof (FARP));
1381         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1382         if (!ndlp)
1383                 return 1;
1384         lpfc_nlp_init(phba, ndlp, nportid);
1385
1386         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1387                                                 ndlp->nlp_DID, ELS_CMD_RNID);
1388         if (!elsiocb) {
1389                 mempool_free( ndlp, phba->nlp_mem_pool);
1390                 return 1;
1391         }
1392
1393         icmd = &elsiocb->iocb;
1394         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1395
1396         *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
1397         pcmd += sizeof (uint32_t);
1398
1399         /* Fill in FARPR payload */
1400         fp = (FARP *) (pcmd);
1401         memset(fp, 0, sizeof (FARP));
1402         lp = (uint32_t *) pcmd;
1403         *lp++ = be32_to_cpu(nportid);
1404         *lp++ = be32_to_cpu(phba->fc_myDID);
1405         fp->Rflags = 0;
1406         fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
1407
1408         memcpy(&fp->RportName, &phba->fc_portname, sizeof (struct lpfc_name));
1409         memcpy(&fp->RnodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1410         if ((ondlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, nportid))) {
1411                 memcpy(&fp->OportName, &ondlp->nlp_portname,
1412                        sizeof (struct lpfc_name));
1413                 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
1414                        sizeof (struct lpfc_name));
1415         }
1416
1417         phba->fc_stat.elsXmitFARPR++;
1418         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
1419         spin_lock_irq(phba->host->host_lock);
1420         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1421                 spin_unlock_irq(phba->host->host_lock);
1422                 mempool_free( ndlp, phba->nlp_mem_pool);
1423                 lpfc_els_free_iocb(phba, elsiocb);
1424                 return 1;
1425         }
1426         spin_unlock_irq(phba->host->host_lock);
1427         mempool_free( ndlp, phba->nlp_mem_pool);
1428         return 0;
1429 }
1430
1431 void
1432 lpfc_cancel_retry_delay_tmo(struct lpfc_hba *phba, struct lpfc_nodelist * nlp)
1433 {
1434         nlp->nlp_flag &= ~NLP_DELAY_TMO;
1435         del_timer_sync(&nlp->nlp_delayfunc);
1436         nlp->nlp_last_elscmd = 0;
1437
1438         if (!list_empty(&nlp->els_retry_evt.evt_listp))
1439                 list_del_init(&nlp->els_retry_evt.evt_listp);
1440
1441         if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
1442                 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1443                 if (phba->num_disc_nodes) {
1444                         /* Check to see if there are more
1445                          * PLOGIs to be sent
1446                          */
1447                         lpfc_more_plogi(phba);
1448
1449                         if (phba->num_disc_nodes == 0) {
1450                                 phba->fc_flag &= ~FC_NDISC_ACTIVE;
1451                                 lpfc_can_disctmo(phba);
1452                                 if (phba->fc_flag & FC_RSCN_MODE) {
1453                                         /*
1454                                          * Check to see if more RSCNs
1455                                          * came in while we were
1456                                          * processing this one.
1457                                          */
1458                                         if((phba->fc_rscn_id_cnt==0) &&
1459                                          !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
1460                                                 phba->fc_flag &= ~FC_RSCN_MODE;
1461                                         }
1462                                         else {
1463                                                 lpfc_els_handle_rscn(phba);
1464                                         }
1465                                 }
1466                         }
1467                 }
1468         }
1469         return;
1470 }
1471
1472 void
1473 lpfc_els_retry_delay(unsigned long ptr)
1474 {
1475         struct lpfc_nodelist *ndlp;
1476         struct lpfc_hba *phba;
1477         unsigned long iflag;
1478         struct lpfc_work_evt  *evtp;
1479
1480         ndlp = (struct lpfc_nodelist *)ptr;
1481         phba = ndlp->nlp_phba;
1482         evtp = &ndlp->els_retry_evt;
1483
1484         spin_lock_irqsave(phba->host->host_lock, iflag);
1485         if (!list_empty(&evtp->evt_listp)) {
1486                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1487                 return;
1488         }
1489
1490         evtp->evt_arg1  = ndlp;
1491         evtp->evt       = LPFC_EVT_ELS_RETRY;
1492         list_add_tail(&evtp->evt_listp, &phba->work_list);
1493         if (phba->work_wait)
1494                 wake_up(phba->work_wait);
1495
1496         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1497         return;
1498 }
1499
1500 void
1501 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
1502 {
1503         struct lpfc_hba *phba;
1504         uint32_t cmd;
1505         uint32_t did;
1506         uint8_t retry;
1507
1508         phba = ndlp->nlp_phba;
1509         spin_lock_irq(phba->host->host_lock);
1510         did = ndlp->nlp_DID;
1511         cmd = ndlp->nlp_last_elscmd;
1512         ndlp->nlp_last_elscmd = 0;
1513
1514         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1515                 spin_unlock_irq(phba->host->host_lock);
1516                 return;
1517         }
1518
1519         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1520         spin_unlock_irq(phba->host->host_lock);
1521         /*
1522          * If a discovery event readded nlp_delayfunc after timer
1523          * firing and before processing the timer, cancel the
1524          * nlp_delayfunc.
1525          */
1526         del_timer_sync(&ndlp->nlp_delayfunc);
1527         retry = ndlp->nlp_retry;
1528
1529         switch (cmd) {
1530         case ELS_CMD_FLOGI:
1531                 lpfc_issue_els_flogi(phba, ndlp, retry);
1532                 break;
1533         case ELS_CMD_PLOGI:
1534                 if(!lpfc_issue_els_plogi(phba, ndlp->nlp_DID, retry)) {
1535                         ndlp->nlp_prev_state = ndlp->nlp_state;
1536                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
1537                 }
1538                 break;
1539         case ELS_CMD_ADISC:
1540                 if (!lpfc_issue_els_adisc(phba, ndlp, retry)) {
1541                         ndlp->nlp_prev_state = ndlp->nlp_state;
1542                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
1543                 }
1544                 break;
1545         case ELS_CMD_PRLI:
1546                 if (!lpfc_issue_els_prli(phba, ndlp, retry)) {
1547                         ndlp->nlp_prev_state = ndlp->nlp_state;
1548                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PRLI_ISSUE);
1549                 }
1550                 break;
1551         case ELS_CMD_LOGO:
1552                 if (!lpfc_issue_els_logo(phba, ndlp, retry)) {
1553                         ndlp->nlp_prev_state = ndlp->nlp_state;
1554                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1555                 }
1556                 break;
1557         }
1558         return;
1559 }
1560
1561 static int
1562 lpfc_els_retry(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1563                struct lpfc_iocbq * rspiocb)
1564 {
1565         IOCB_t *irsp;
1566         struct lpfc_dmabuf *pcmd;
1567         struct lpfc_nodelist *ndlp;
1568         uint32_t *elscmd;
1569         struct ls_rjt stat;
1570         int retry, maxretry;
1571         int delay;
1572         uint32_t cmd;
1573         uint32_t did;
1574
1575         retry = 0;
1576         delay = 0;
1577         maxretry = lpfc_max_els_tries;
1578         irsp = &rspiocb->iocb;
1579         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1580         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1581         cmd = 0;
1582
1583         /* Note: context2 may be 0 for internal driver abort
1584          * of delays ELS command.
1585          */
1586
1587         if (pcmd && pcmd->virt) {
1588                 elscmd = (uint32_t *) (pcmd->virt);
1589                 cmd = *elscmd++;
1590         }
1591
1592         if(ndlp)
1593                 did = ndlp->nlp_DID;
1594         else {
1595                 /* We should only hit this case for retrying PLOGI */
1596                 did = irsp->un.elsreq64.remoteID;
1597                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
1598                 if (!ndlp && (cmd != ELS_CMD_PLOGI))
1599                         return 1;
1600         }
1601
1602         switch (irsp->ulpStatus) {
1603         case IOSTAT_FCP_RSP_ERROR:
1604         case IOSTAT_REMOTE_STOP:
1605                 break;
1606
1607         case IOSTAT_LOCAL_REJECT:
1608                 switch ((irsp->un.ulpWord[4] & 0xff)) {
1609                 case IOERR_LOOP_OPEN_FAILURE:
1610                         if (cmd == ELS_CMD_PLOGI) {
1611                                 if (cmdiocb->retry == 0) {
1612                                         delay = 1;
1613                                 }
1614                         }
1615                         retry = 1;
1616                         break;
1617
1618                 case IOERR_SEQUENCE_TIMEOUT:
1619                         retry = 1;
1620                         break;
1621
1622                 case IOERR_NO_RESOURCES:
1623                         if (cmd == ELS_CMD_PLOGI) {
1624                                 delay = 1;
1625                         }
1626                         retry = 1;
1627                         break;
1628
1629                 case IOERR_INVALID_RPI:
1630                         retry = 1;
1631                         break;
1632                 }
1633                 break;
1634
1635         case IOSTAT_NPORT_RJT:
1636         case IOSTAT_FABRIC_RJT:
1637                 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
1638                         retry = 1;
1639                         break;
1640                 }
1641                 break;
1642
1643         case IOSTAT_NPORT_BSY:
1644         case IOSTAT_FABRIC_BSY:
1645                 retry = 1;
1646                 break;
1647
1648         case IOSTAT_LS_RJT:
1649                 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
1650                 /* Added for Vendor specifc support
1651                  * Just keep retrying for these Rsn / Exp codes
1652                  */
1653                 switch (stat.un.b.lsRjtRsnCode) {
1654                 case LSRJT_UNABLE_TPC:
1655                         if (stat.un.b.lsRjtRsnCodeExp ==
1656                             LSEXP_CMD_IN_PROGRESS) {
1657                                 if (cmd == ELS_CMD_PLOGI) {
1658                                         delay = 1;
1659                                         maxretry = 48;
1660                                 }
1661                                 retry = 1;
1662                                 break;
1663                         }
1664                         if (cmd == ELS_CMD_PLOGI) {
1665                                 delay = 1;
1666                                 maxretry = lpfc_max_els_tries + 1;
1667                                 retry = 1;
1668                                 break;
1669                         }
1670                         break;
1671
1672                 case LSRJT_LOGICAL_BSY:
1673                         if (cmd == ELS_CMD_PLOGI) {
1674                                 delay = 1;
1675                                 maxretry = 48;
1676                         }
1677                         retry = 1;
1678                         break;
1679                 }
1680                 break;
1681
1682         case IOSTAT_INTERMED_RSP:
1683         case IOSTAT_BA_RJT:
1684                 break;
1685
1686         default:
1687                 break;
1688         }
1689
1690         if (did == FDMI_DID)
1691                 retry = 1;
1692
1693         if ((++cmdiocb->retry) >= maxretry) {
1694                 phba->fc_stat.elsRetryExceeded++;
1695                 retry = 0;
1696         }
1697
1698         if (retry) {
1699
1700                 /* Retry ELS command <elsCmd> to remote NPORT <did> */
1701                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1702                                 "%d:0107 Retry ELS command x%x to remote "
1703                                 "NPORT x%x Data: x%x x%x\n",
1704                                 phba->brd_no,
1705                                 cmd, did, cmdiocb->retry, delay);
1706
1707                 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) {
1708                         /* If discovery / RSCN timer is running, reset it */
1709                         if (timer_pending(&phba->fc_disctmo) ||
1710                               (phba->fc_flag & FC_RSCN_MODE)) {
1711                                 lpfc_set_disctmo(phba);
1712                         }
1713                 }
1714
1715                 phba->fc_stat.elsXmitRetry++;
1716                 if (ndlp && delay) {
1717                         phba->fc_stat.elsDelayRetry++;
1718                         ndlp->nlp_retry = cmdiocb->retry;
1719
1720                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1721                         ndlp->nlp_flag |= NLP_DELAY_TMO;
1722
1723                         ndlp->nlp_prev_state = ndlp->nlp_state;
1724                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1725                         ndlp->nlp_last_elscmd = cmd;
1726
1727                         return 1;
1728                 }
1729                 switch (cmd) {
1730                 case ELS_CMD_FLOGI:
1731                         lpfc_issue_els_flogi(phba, ndlp, cmdiocb->retry);
1732                         return 1;
1733                 case ELS_CMD_PLOGI:
1734                         if (ndlp) {
1735                                 ndlp->nlp_prev_state = ndlp->nlp_state;
1736                                 lpfc_nlp_set_state(phba, ndlp,
1737                                                    NLP_STE_PLOGI_ISSUE);
1738                         }
1739                         lpfc_issue_els_plogi(phba, did, cmdiocb->retry);
1740                         return 1;
1741                 case ELS_CMD_ADISC:
1742                         ndlp->nlp_prev_state = ndlp->nlp_state;
1743                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
1744                         lpfc_issue_els_adisc(phba, ndlp, cmdiocb->retry);
1745                         return 1;
1746                 case ELS_CMD_PRLI:
1747                         ndlp->nlp_prev_state = ndlp->nlp_state;
1748                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PRLI_ISSUE);
1749                         lpfc_issue_els_prli(phba, ndlp, cmdiocb->retry);
1750                         return 1;
1751                 case ELS_CMD_LOGO:
1752                         ndlp->nlp_prev_state = ndlp->nlp_state;
1753                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1754                         lpfc_issue_els_logo(phba, ndlp, cmdiocb->retry);
1755                         return 1;
1756                 }
1757         }
1758
1759         /* No retry ELS command <elsCmd> to remote NPORT <did> */
1760         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1761                         "%d:0108 No retry ELS command x%x to remote NPORT x%x "
1762                         "Data: x%x\n",
1763                         phba->brd_no,
1764                         cmd, did, cmdiocb->retry);
1765
1766         return 0;
1767 }
1768
1769 int
1770 lpfc_els_free_iocb(struct lpfc_hba * phba, struct lpfc_iocbq * elsiocb)
1771 {
1772         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
1773
1774         /* context2  = cmd,  context2->next = rsp, context3 = bpl */
1775         if (elsiocb->context2) {
1776                 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
1777                 /* Free the response before processing the command.  */
1778                 if (!list_empty(&buf_ptr1->list)) {
1779                         list_remove_head(&buf_ptr1->list, buf_ptr,
1780                                          struct lpfc_dmabuf,
1781                                          list);
1782                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1783                         kfree(buf_ptr);
1784                 }
1785                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
1786                 kfree(buf_ptr1);
1787         }
1788
1789         if (elsiocb->context3) {
1790                 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
1791                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1792                 kfree(buf_ptr);
1793         }
1794         spin_lock_irq(phba->host->host_lock);
1795         lpfc_sli_release_iocbq(phba, elsiocb);
1796         spin_unlock_irq(phba->host->host_lock);
1797         return 0;
1798 }
1799
1800 static void
1801 lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1802                        struct lpfc_iocbq * rspiocb)
1803 {
1804         struct lpfc_nodelist *ndlp;
1805
1806         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1807
1808         /* ACC to LOGO completes to NPort <nlp_DID> */
1809         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1810                         "%d:0109 ACC to LOGO completes to NPort x%x "
1811                         "Data: x%x x%x x%x\n",
1812                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
1813                         ndlp->nlp_state, ndlp->nlp_rpi);
1814
1815         switch (ndlp->nlp_state) {
1816         case NLP_STE_UNUSED_NODE:       /* node is just allocated */
1817                 lpfc_drop_node(phba, ndlp);
1818                 break;
1819         case NLP_STE_NPR_NODE:          /* NPort Recovery mode */
1820                 lpfc_unreg_rpi(phba, ndlp);
1821                 break;
1822         default:
1823                 break;
1824         }
1825         lpfc_els_free_iocb(phba, cmdiocb);
1826         return;
1827 }
1828
1829 static void
1830 lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1831                   struct lpfc_iocbq * rspiocb)
1832 {
1833         IOCB_t *irsp;
1834         struct lpfc_nodelist *ndlp;
1835         LPFC_MBOXQ_t *mbox = NULL;
1836         struct lpfc_dmabuf *mp;
1837
1838         irsp = &rspiocb->iocb;
1839
1840         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1841         if (cmdiocb->context_un.mbox)
1842                 mbox = cmdiocb->context_un.mbox;
1843
1844
1845         /* Check to see if link went down during discovery */
1846         if ((lpfc_els_chk_latt(phba)) || !ndlp) {
1847                 if (mbox) {
1848                         mp = (struct lpfc_dmabuf *) mbox->context1;
1849                         if (mp) {
1850                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1851                                 kfree(mp);
1852                         }
1853                         mempool_free( mbox, phba->mbox_mem_pool);
1854                 }
1855                 goto out;
1856         }
1857
1858         /* ELS response tag <ulpIoTag> completes */
1859         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1860                         "%d:0110 ELS response tag x%x completes "
1861                         "Data: x%x x%x x%x x%x x%x x%x x%x\n",
1862                         phba->brd_no,
1863                         cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
1864                         rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
1865                         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
1866                         ndlp->nlp_rpi);
1867
1868         if (mbox) {
1869                 if ((rspiocb->iocb.ulpStatus == 0)
1870                     && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
1871                         lpfc_unreg_rpi(phba, ndlp);
1872                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1873                         mbox->context2 = ndlp;
1874                         ndlp->nlp_prev_state = ndlp->nlp_state;
1875                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_REG_LOGIN_ISSUE);
1876                         if (lpfc_sli_issue_mbox(phba, mbox,
1877                                                 (MBX_NOWAIT | MBX_STOP_IOCB))
1878                             != MBX_NOT_FINISHED) {
1879                                 goto out;
1880                         }
1881                         /* NOTE: we should have messages for unsuccessful
1882                            reglogin */
1883                 } else {
1884                         /* Do not call NO_LIST for lpfc_els_abort'ed ELS cmds */
1885                         if (!((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1886                               ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
1887                                (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
1888                                (irsp->un.ulpWord[4] == IOERR_SLI_DOWN)))) {
1889                                 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1890                                         lpfc_drop_node(phba, ndlp);
1891                                         ndlp = NULL;
1892                                 }
1893                         }
1894                 }
1895                 mp = (struct lpfc_dmabuf *) mbox->context1;
1896                 if (mp) {
1897                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1898                         kfree(mp);
1899                 }
1900                 mempool_free(mbox, phba->mbox_mem_pool);
1901         }
1902 out:
1903         if (ndlp) {
1904                 spin_lock_irq(phba->host->host_lock);
1905                 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
1906                 spin_unlock_irq(phba->host->host_lock);
1907         }
1908         lpfc_els_free_iocb(phba, cmdiocb);
1909         return;
1910 }
1911
1912 int
1913 lpfc_els_rsp_acc(struct lpfc_hba * phba, uint32_t flag,
1914                  struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp,
1915                  LPFC_MBOXQ_t * mbox, uint8_t newnode)
1916 {
1917         IOCB_t *icmd;
1918         IOCB_t *oldcmd;
1919         struct lpfc_iocbq *elsiocb;
1920         struct lpfc_sli_ring *pring;
1921         struct lpfc_sli *psli;
1922         uint8_t *pcmd;
1923         uint16_t cmdsize;
1924         int rc;
1925         ELS_PKT *els_pkt_ptr;
1926
1927         psli = &phba->sli;
1928         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1929         oldcmd = &oldiocb->iocb;
1930
1931         switch (flag) {
1932         case ELS_CMD_ACC:
1933                 cmdsize = sizeof (uint32_t);
1934                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1935                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
1936                 if (!elsiocb) {
1937                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
1938                         return 1;
1939                 }
1940                 icmd = &elsiocb->iocb;
1941                 icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1942                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1943                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
1944                 pcmd += sizeof (uint32_t);
1945                 break;
1946         case ELS_CMD_PLOGI:
1947                 cmdsize = (sizeof (struct serv_parm) + sizeof (uint32_t));
1948                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1949                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
1950                 if (!elsiocb)
1951                         return 1;
1952
1953                 icmd = &elsiocb->iocb;
1954                 icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1955                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1956
1957                 if (mbox)
1958                         elsiocb->context_un.mbox = mbox;
1959
1960                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
1961                 pcmd += sizeof (uint32_t);
1962                 memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
1963                 break;
1964         case ELS_CMD_PRLO:
1965                 cmdsize = sizeof (uint32_t) + sizeof (PRLO);
1966                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1967                                              ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
1968                 if (!elsiocb)
1969                         return 1;
1970
1971                 icmd = &elsiocb->iocb;
1972                 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
1973                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1974
1975                 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
1976                        sizeof (uint32_t) + sizeof (PRLO));
1977                 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
1978                 els_pkt_ptr = (ELS_PKT *) pcmd;
1979                 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
1980                 break;
1981         default:
1982                 return 1;
1983         }
1984
1985         if (newnode)
1986                 elsiocb->context1 = NULL;
1987
1988         /* Xmit ELS ACC response tag <ulpIoTag> */
1989         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1990                         "%d:0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
1991                         "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
1992                         phba->brd_no, elsiocb->iotag,
1993                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
1994                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
1995
1996         if (ndlp->nlp_flag & NLP_LOGO_ACC) {
1997                 spin_lock_irq(phba->host->host_lock);
1998                 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
1999                 spin_unlock_irq(phba->host->host_lock);
2000                 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
2001         } else {
2002                 elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2003         }
2004
2005         phba->fc_stat.elsXmitACC++;
2006         spin_lock_irq(phba->host->host_lock);
2007         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2008         spin_unlock_irq(phba->host->host_lock);
2009         if (rc == IOCB_ERROR) {
2010                 lpfc_els_free_iocb(phba, elsiocb);
2011                 return 1;
2012         }
2013         return 0;
2014 }
2015
2016 int
2017 lpfc_els_rsp_reject(struct lpfc_hba * phba, uint32_t rejectError,
2018                     struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2019 {
2020         IOCB_t *icmd;
2021         IOCB_t *oldcmd;
2022         struct lpfc_iocbq *elsiocb;
2023         struct lpfc_sli_ring *pring;
2024         struct lpfc_sli *psli;
2025         uint8_t *pcmd;
2026         uint16_t cmdsize;
2027         int rc;
2028
2029         psli = &phba->sli;
2030         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2031
2032         cmdsize = 2 * sizeof (uint32_t);
2033         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2034                                         ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
2035         if (!elsiocb)
2036                 return 1;
2037
2038         icmd = &elsiocb->iocb;
2039         oldcmd = &oldiocb->iocb;
2040         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2041         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2042
2043         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
2044         pcmd += sizeof (uint32_t);
2045         *((uint32_t *) (pcmd)) = rejectError;
2046
2047         /* Xmit ELS RJT <err> response tag <ulpIoTag> */
2048         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2049                         "%d:0129 Xmit ELS RJT x%x response tag x%x "
2050                         "Data: x%x x%x x%x x%x x%x\n",
2051                         phba->brd_no,
2052                         rejectError, elsiocb->iocb.ulpIoTag,
2053                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2054                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2055
2056         phba->fc_stat.elsXmitLSRJT++;
2057         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2058         spin_lock_irq(phba->host->host_lock);
2059         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2060         spin_unlock_irq(phba->host->host_lock);
2061         if (rc == IOCB_ERROR) {
2062                 lpfc_els_free_iocb(phba, elsiocb);
2063                 return 1;
2064         }
2065         return 0;
2066 }
2067
2068 int
2069 lpfc_els_rsp_adisc_acc(struct lpfc_hba * phba,
2070                        struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2071 {
2072         ADISC *ap;
2073         IOCB_t *icmd;
2074         IOCB_t *oldcmd;
2075         struct lpfc_iocbq *elsiocb;
2076         struct lpfc_sli_ring *pring;
2077         struct lpfc_sli *psli;
2078         uint8_t *pcmd;
2079         uint16_t cmdsize;
2080         int rc;
2081
2082         psli = &phba->sli;
2083         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2084
2085         cmdsize = sizeof (uint32_t) + sizeof (ADISC);
2086         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2087                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2088         if (!elsiocb)
2089                 return 1;
2090
2091         /* Xmit ADISC ACC response tag <ulpIoTag> */
2092         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2093                         "%d:0130 Xmit ADISC ACC response tag x%x "
2094                         "Data: x%x x%x x%x x%x x%x\n",
2095                         phba->brd_no,
2096                         elsiocb->iocb.ulpIoTag,
2097                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2098                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2099
2100         icmd = &elsiocb->iocb;
2101         oldcmd = &oldiocb->iocb;
2102         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2103         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2104
2105         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2106         pcmd += sizeof (uint32_t);
2107
2108         ap = (ADISC *) (pcmd);
2109         ap->hardAL_PA = phba->fc_pref_ALPA;
2110         memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
2111         memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
2112         ap->DID = be32_to_cpu(phba->fc_myDID);
2113
2114         phba->fc_stat.elsXmitACC++;
2115         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2116         spin_lock_irq(phba->host->host_lock);
2117         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2118         spin_unlock_irq(phba->host->host_lock);
2119         if (rc == IOCB_ERROR) {
2120                 lpfc_els_free_iocb(phba, elsiocb);
2121                 return 1;
2122         }
2123         return 0;
2124 }
2125
2126 int
2127 lpfc_els_rsp_prli_acc(struct lpfc_hba * phba,
2128                       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2129 {
2130         PRLI *npr;
2131         lpfc_vpd_t *vpd;
2132         IOCB_t *icmd;
2133         IOCB_t *oldcmd;
2134         struct lpfc_iocbq *elsiocb;
2135         struct lpfc_sli_ring *pring;
2136         struct lpfc_sli *psli;
2137         uint8_t *pcmd;
2138         uint16_t cmdsize;
2139         int rc;
2140
2141         psli = &phba->sli;
2142         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2143
2144         cmdsize = sizeof (uint32_t) + sizeof (PRLI);
2145         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, ndlp,
2146                 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
2147         if (!elsiocb)
2148                 return 1;
2149
2150         /* Xmit PRLI ACC response tag <ulpIoTag> */
2151         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2152                         "%d:0131 Xmit PRLI ACC response tag x%x "
2153                         "Data: x%x x%x x%x x%x x%x\n",
2154                         phba->brd_no,
2155                         elsiocb->iocb.ulpIoTag,
2156                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2157                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2158
2159         icmd = &elsiocb->iocb;
2160         oldcmd = &oldiocb->iocb;
2161         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2162         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2163
2164         *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
2165         pcmd += sizeof (uint32_t);
2166
2167         /* For PRLI, remainder of payload is PRLI parameter page */
2168         memset(pcmd, 0, sizeof (PRLI));
2169
2170         npr = (PRLI *) pcmd;
2171         vpd = &phba->vpd;
2172         /*
2173          * If our firmware version is 3.20 or later,
2174          * set the following bits for FC-TAPE support.
2175          */
2176         if (vpd->rev.feaLevelHigh >= 0x02) {
2177                 npr->ConfmComplAllowed = 1;
2178                 npr->Retry = 1;
2179                 npr->TaskRetryIdReq = 1;
2180         }
2181
2182         npr->acceptRspCode = PRLI_REQ_EXECUTED;
2183         npr->estabImagePair = 1;
2184         npr->readXferRdyDis = 1;
2185         npr->ConfmComplAllowed = 1;
2186
2187         npr->prliType = PRLI_FCP_TYPE;
2188         npr->initiatorFunc = 1;
2189
2190         phba->fc_stat.elsXmitACC++;
2191         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2192
2193         spin_lock_irq(phba->host->host_lock);
2194         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2195         spin_unlock_irq(phba->host->host_lock);
2196         if (rc == IOCB_ERROR) {
2197                 lpfc_els_free_iocb(phba, elsiocb);
2198                 return 1;
2199         }
2200         return 0;
2201 }
2202
2203 static int
2204 lpfc_els_rsp_rnid_acc(struct lpfc_hba * phba,
2205                       uint8_t format,
2206                       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2207 {
2208         RNID *rn;
2209         IOCB_t *icmd;
2210         IOCB_t *oldcmd;
2211         struct lpfc_iocbq *elsiocb;
2212         struct lpfc_sli_ring *pring;
2213         struct lpfc_sli *psli;
2214         uint8_t *pcmd;
2215         uint16_t cmdsize;
2216         int rc;
2217
2218         psli = &phba->sli;
2219         pring = &psli->ring[LPFC_ELS_RING];
2220
2221         cmdsize = sizeof (uint32_t) + sizeof (uint32_t)
2222                 + (2 * sizeof (struct lpfc_name));
2223         if (format)
2224                 cmdsize += sizeof (RNID_TOP_DISC);
2225
2226         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2227                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2228         if (!elsiocb)
2229                 return 1;
2230
2231         /* Xmit RNID ACC response tag <ulpIoTag> */
2232         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2233                         "%d:0132 Xmit RNID ACC response tag x%x "
2234                         "Data: x%x\n",
2235                         phba->brd_no,
2236                         elsiocb->iocb.ulpIoTag,
2237                         elsiocb->iocb.ulpContext);
2238
2239         icmd = &elsiocb->iocb;
2240         oldcmd = &oldiocb->iocb;
2241         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2242         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2243
2244         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2245         pcmd += sizeof (uint32_t);
2246
2247         memset(pcmd, 0, sizeof (RNID));
2248         rn = (RNID *) (pcmd);
2249         rn->Format = format;
2250         rn->CommonLen = (2 * sizeof (struct lpfc_name));
2251         memcpy(&rn->portName, &phba->fc_portname, sizeof (struct lpfc_name));
2252         memcpy(&rn->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
2253         switch (format) {
2254         case 0:
2255                 rn->SpecificLen = 0;
2256                 break;
2257         case RNID_TOPOLOGY_DISC:
2258                 rn->SpecificLen = sizeof (RNID_TOP_DISC);
2259                 memcpy(&rn->un.topologyDisc.portName,
2260                        &phba->fc_portname, sizeof (struct lpfc_name));
2261                 rn->un.topologyDisc.unitType = RNID_HBA;
2262                 rn->un.topologyDisc.physPort = 0;
2263                 rn->un.topologyDisc.attachedNodes = 0;
2264                 break;
2265         default:
2266                 rn->CommonLen = 0;
2267                 rn->SpecificLen = 0;
2268                 break;
2269         }
2270
2271         phba->fc_stat.elsXmitACC++;
2272         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2273         elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
2274                                     * it could be freed */
2275
2276         spin_lock_irq(phba->host->host_lock);
2277         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2278         spin_unlock_irq(phba->host->host_lock);
2279         if (rc == IOCB_ERROR) {
2280                 lpfc_els_free_iocb(phba, elsiocb);
2281                 return 1;
2282         }
2283         return 0;
2284 }
2285
2286 int
2287 lpfc_els_disc_adisc(struct lpfc_hba * phba)
2288 {
2289         int sentadisc;
2290         struct lpfc_nodelist *ndlp, *next_ndlp;
2291
2292         sentadisc = 0;
2293         /* go thru NPR list and issue any remaining ELS ADISCs */
2294         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2295                         nlp_listp) {
2296                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2297                         if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2298                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2299                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2300                                 lpfc_nlp_set_state(phba, ndlp,
2301                                                    NLP_STE_ADISC_ISSUE);
2302                                 lpfc_issue_els_adisc(phba, ndlp, 0);
2303                                 sentadisc++;
2304                                 phba->num_disc_nodes++;
2305                                 if (phba->num_disc_nodes >=
2306                                     phba->cfg_discovery_threads) {
2307                                         spin_lock_irq(phba->host->host_lock);
2308                                         phba->fc_flag |= FC_NLP_MORE;
2309                                         spin_unlock_irq(phba->host->host_lock);
2310                                         break;
2311                                 }
2312                         }
2313                 }
2314         }
2315         if (sentadisc == 0) {
2316                 spin_lock_irq(phba->host->host_lock);
2317                 phba->fc_flag &= ~FC_NLP_MORE;
2318                 spin_unlock_irq(phba->host->host_lock);
2319         }
2320         return sentadisc;
2321 }
2322
2323 int
2324 lpfc_els_disc_plogi(struct lpfc_hba * phba)
2325 {
2326         int sentplogi;
2327         struct lpfc_nodelist *ndlp, *next_ndlp;
2328
2329         sentplogi = 0;
2330         /* go thru NPR list and issue any remaining ELS PLOGIs */
2331         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2332                                 nlp_listp) {
2333                 if ((ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
2334                    (!(ndlp->nlp_flag & NLP_DELAY_TMO))) {
2335                         if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2336                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2337                                 lpfc_nlp_set_state(phba, ndlp,
2338                                                    NLP_STE_PLOGI_ISSUE);
2339                                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
2340                                 sentplogi++;
2341                                 phba->num_disc_nodes++;
2342                                 if (phba->num_disc_nodes >=
2343                                     phba->cfg_discovery_threads) {
2344                                         spin_lock_irq(phba->host->host_lock);
2345                                         phba->fc_flag |= FC_NLP_MORE;
2346                                         spin_unlock_irq(phba->host->host_lock);
2347                                         break;
2348                                 }
2349                         }
2350                 }
2351         }
2352         if (sentplogi == 0) {
2353                 spin_lock_irq(phba->host->host_lock);
2354                 phba->fc_flag &= ~FC_NLP_MORE;
2355                 spin_unlock_irq(phba->host->host_lock);
2356         }
2357         return sentplogi;
2358 }
2359
2360 int
2361 lpfc_els_flush_rscn(struct lpfc_hba * phba)
2362 {
2363         struct lpfc_dmabuf *mp;
2364         int i;
2365
2366         for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
2367                 mp = phba->fc_rscn_id_list[i];
2368                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2369                 kfree(mp);
2370                 phba->fc_rscn_id_list[i] = NULL;
2371         }
2372         phba->fc_rscn_id_cnt = 0;
2373         spin_lock_irq(phba->host->host_lock);
2374         phba->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
2375         spin_unlock_irq(phba->host->host_lock);
2376         lpfc_can_disctmo(phba);
2377         return 0;
2378 }
2379
2380 int
2381 lpfc_rscn_payload_check(struct lpfc_hba * phba, uint32_t did)
2382 {
2383         D_ID ns_did;
2384         D_ID rscn_did;
2385         struct lpfc_dmabuf *mp;
2386         uint32_t *lp;
2387         uint32_t payload_len, cmd, i, match;
2388
2389         ns_did.un.word = did;
2390         match = 0;
2391
2392         /* Never match fabric nodes for RSCNs */
2393         if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
2394                 return(0);
2395
2396         /* If we are doing a FULL RSCN rediscovery, match everything */
2397         if (phba->fc_flag & FC_RSCN_DISCOVERY) {
2398                 return did;
2399         }
2400
2401         for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
2402                 mp = phba->fc_rscn_id_list[i];
2403                 lp = (uint32_t *) mp->virt;
2404                 cmd = *lp++;
2405                 payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */
2406                 payload_len -= sizeof (uint32_t);       /* take off word 0 */
2407                 while (payload_len) {
2408                         rscn_did.un.word = *lp++;
2409                         rscn_did.un.word = be32_to_cpu(rscn_did.un.word);
2410                         payload_len -= sizeof (uint32_t);
2411                         switch (rscn_did.un.b.resv) {
2412                         case 0: /* Single N_Port ID effected */
2413                                 if (ns_did.un.word == rscn_did.un.word) {
2414                                         match = did;
2415                                 }
2416                                 break;
2417                         case 1: /* Whole N_Port Area effected */
2418                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
2419                                     && (ns_did.un.b.area == rscn_did.un.b.area))
2420                                         {
2421                                                 match = did;
2422                                         }
2423                                 break;
2424                         case 2: /* Whole N_Port Domain effected */
2425                                 if (ns_did.un.b.domain == rscn_did.un.b.domain)
2426                                         {
2427                                                 match = did;
2428                                         }
2429                                 break;
2430                         case 3: /* Whole Fabric effected */
2431                                 match = did;
2432                                 break;
2433                         default:
2434                                 /* Unknown Identifier in RSCN list */
2435                                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2436                                                 "%d:0217 Unknown Identifier in "
2437                                                 "RSCN payload Data: x%x\n",
2438                                                 phba->brd_no, rscn_did.un.word);
2439                                 break;
2440                         }
2441                         if (match) {
2442                                 break;
2443                         }
2444                 }
2445         }
2446         return match;
2447 }
2448
2449 static int
2450 lpfc_rscn_recovery_check(struct lpfc_hba * phba)
2451 {
2452         struct lpfc_nodelist *ndlp = NULL, *next_ndlp;
2453         struct list_head *listp;
2454         struct list_head *node_list[7];
2455         int i;
2456
2457         /* Look at all nodes effected by pending RSCNs and move
2458          * them to NPR list.
2459          */
2460         node_list[0] = &phba->fc_npr_list;  /* MUST do this list first */
2461         node_list[1] = &phba->fc_nlpmap_list;
2462         node_list[2] = &phba->fc_nlpunmap_list;
2463         node_list[3] = &phba->fc_prli_list;
2464         node_list[4] = &phba->fc_reglogin_list;
2465         node_list[5] = &phba->fc_adisc_list;
2466         node_list[6] = &phba->fc_plogi_list;
2467         for (i = 0; i < 7; i++) {
2468                 listp = node_list[i];
2469                 if (list_empty(listp))
2470                         continue;
2471
2472                 list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
2473                         if (!(lpfc_rscn_payload_check(phba, ndlp->nlp_DID)))
2474                                 continue;
2475
2476                         lpfc_disc_state_machine(phba, ndlp, NULL,
2477                                         NLP_EVT_DEVICE_RECOVERY);
2478
2479                         /* Make sure NLP_DELAY_TMO is NOT running
2480                          * after a device recovery event.
2481                          */
2482                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2483                                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
2484                 }
2485         }
2486         return 0;
2487 }
2488
2489 static int
2490 lpfc_els_rcv_rscn(struct lpfc_hba * phba,
2491                   struct lpfc_iocbq * cmdiocb,
2492                   struct lpfc_nodelist * ndlp, uint8_t newnode)
2493 {
2494         struct lpfc_dmabuf *pcmd;
2495         uint32_t *lp;
2496         IOCB_t *icmd;
2497         uint32_t payload_len, cmd;
2498         int i;
2499
2500         icmd = &cmdiocb->iocb;
2501         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2502         lp = (uint32_t *) pcmd->virt;
2503
2504         cmd = *lp++;
2505         payload_len = be32_to_cpu(cmd) & 0xffff;        /* payload length */
2506         payload_len -= sizeof (uint32_t);       /* take off word 0 */
2507         cmd &= ELS_CMD_MASK;
2508
2509         /* RSCN received */
2510         lpfc_printf_log(phba,
2511                         KERN_INFO,
2512                         LOG_DISCOVERY,
2513                         "%d:0214 RSCN received Data: x%x x%x x%x x%x\n",
2514                         phba->brd_no,
2515                         phba->fc_flag, payload_len, *lp, phba->fc_rscn_id_cnt);
2516
2517         for (i = 0; i < payload_len/sizeof(uint32_t); i++)
2518                 fc_host_post_event(phba->host, fc_get_event_number(),
2519                         FCH_EVT_RSCN, lp[i]);
2520
2521         /* If we are about to begin discovery, just ACC the RSCN.
2522          * Discovery processing will satisfy it.
2523          */
2524         if (phba->hba_state <= LPFC_NS_QRY) {
2525                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
2526                                                                 newnode);
2527                 return 0;
2528         }
2529
2530         /* If we are already processing an RSCN, save the received
2531          * RSCN payload buffer, cmdiocb->context2 to process later.
2532          */
2533         if (phba->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
2534                 if ((phba->fc_rscn_id_cnt < FC_MAX_HOLD_RSCN) &&
2535                     !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
2536                         spin_lock_irq(phba->host->host_lock);
2537                         phba->fc_flag |= FC_RSCN_MODE;
2538                         spin_unlock_irq(phba->host->host_lock);
2539                         phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
2540
2541                         /* If we zero, cmdiocb->context2, the calling
2542                          * routine will not try to free it.
2543                          */
2544                         cmdiocb->context2 = NULL;
2545
2546                         /* Deferred RSCN */
2547                         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2548                                         "%d:0235 Deferred RSCN "
2549                                         "Data: x%x x%x x%x\n",
2550                                         phba->brd_no, phba->fc_rscn_id_cnt,
2551                                         phba->fc_flag, phba->hba_state);
2552                 } else {
2553                         spin_lock_irq(phba->host->host_lock);
2554                         phba->fc_flag |= FC_RSCN_DISCOVERY;
2555                         spin_unlock_irq(phba->host->host_lock);
2556                         /* ReDiscovery RSCN */
2557                         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2558                                         "%d:0234 ReDiscovery RSCN "
2559                                         "Data: x%x x%x x%x\n",
2560                                         phba->brd_no, phba->fc_rscn_id_cnt,
2561                                         phba->fc_flag, phba->hba_state);
2562                 }
2563                 /* Send back ACC */
2564                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
2565                                                                 newnode);
2566
2567                 /* send RECOVERY event for ALL nodes that match RSCN payload */
2568                 lpfc_rscn_recovery_check(phba);
2569                 return 0;
2570         }
2571
2572         phba->fc_flag |= FC_RSCN_MODE;
2573         phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
2574         /*
2575          * If we zero, cmdiocb->context2, the calling routine will
2576          * not try to free it.
2577          */
2578         cmdiocb->context2 = NULL;
2579
2580         lpfc_set_disctmo(phba);
2581
2582         /* Send back ACC */
2583         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, newnode);
2584
2585         /* send RECOVERY event for ALL nodes that match RSCN payload */
2586         lpfc_rscn_recovery_check(phba);
2587
2588         return lpfc_els_handle_rscn(phba);
2589 }
2590
2591 int
2592 lpfc_els_handle_rscn(struct lpfc_hba * phba)
2593 {
2594         struct lpfc_nodelist *ndlp;
2595
2596         /* Start timer for RSCN processing */
2597         lpfc_set_disctmo(phba);
2598
2599         /* RSCN processed */
2600         lpfc_printf_log(phba,
2601                         KERN_INFO,
2602                         LOG_DISCOVERY,
2603                         "%d:0215 RSCN processed Data: x%x x%x x%x x%x\n",
2604                         phba->brd_no,
2605                         phba->fc_flag, 0, phba->fc_rscn_id_cnt,
2606                         phba->hba_state);
2607
2608         /* To process RSCN, first compare RSCN data with NameServer */
2609         phba->fc_ns_retry = 0;
2610         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED, NameServer_DID);
2611         if (ndlp) {
2612                 /* Good ndlp, issue CT Request to NameServer */
2613                 if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT) == 0) {
2614                         /* Wait for NameServer query cmpl before we can
2615                            continue */
2616                         return 1;
2617                 }
2618         } else {
2619                 /* If login to NameServer does not exist, issue one */
2620                 /* Good status, issue PLOGI to NameServer */
2621                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
2622                 if (ndlp) {
2623                         /* Wait for NameServer login cmpl before we can
2624                            continue */
2625                         return 1;
2626                 }
2627                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2628                 if (!ndlp) {
2629                         lpfc_els_flush_rscn(phba);
2630                         return 0;
2631                 } else {
2632                         lpfc_nlp_init(phba, ndlp, NameServer_DID);
2633                         ndlp->nlp_type |= NLP_FABRIC;
2634                         ndlp->nlp_prev_state = ndlp->nlp_state;
2635                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
2636                         lpfc_issue_els_plogi(phba, NameServer_DID, 0);
2637                         /* Wait for NameServer login cmpl before we can
2638                            continue */
2639                         return 1;
2640                 }
2641         }
2642
2643         lpfc_els_flush_rscn(phba);
2644         return 0;
2645 }
2646
2647 static int
2648 lpfc_els_rcv_flogi(struct lpfc_hba * phba,
2649                    struct lpfc_iocbq * cmdiocb,
2650                    struct lpfc_nodelist * ndlp, uint8_t newnode)
2651 {
2652         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2653         uint32_t *lp = (uint32_t *) pcmd->virt;
2654         IOCB_t *icmd = &cmdiocb->iocb;
2655         struct serv_parm *sp;
2656         LPFC_MBOXQ_t *mbox;
2657         struct ls_rjt stat;
2658         uint32_t cmd, did;
2659         int rc;
2660
2661         cmd = *lp++;
2662         sp = (struct serv_parm *) lp;
2663
2664         /* FLOGI received */
2665
2666         lpfc_set_disctmo(phba);
2667
2668         if (phba->fc_topology == TOPOLOGY_LOOP) {
2669                 /* We should never receive a FLOGI in loop mode, ignore it */
2670                 did = icmd->un.elsreq64.remoteID;
2671
2672                 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
2673                    Loop Mode */
2674                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
2675                                 "%d:0113 An FLOGI ELS command x%x was received "
2676                                 "from DID x%x in Loop Mode\n",
2677                                 phba->brd_no, cmd, did);
2678                 return 1;
2679         }
2680
2681         did = Fabric_DID;
2682
2683         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3))) {
2684                 /* For a FLOGI we accept, then if our portname is greater
2685                  * then the remote portname we initiate Nport login.
2686                  */
2687
2688                 rc = memcmp(&phba->fc_portname, &sp->portName,
2689                             sizeof (struct lpfc_name));
2690
2691                 if (!rc) {
2692                         if ((mbox = mempool_alloc(phba->mbox_mem_pool,
2693                                                   GFP_KERNEL)) == 0) {
2694                                 return 1;
2695                         }
2696                         lpfc_linkdown(phba);
2697                         lpfc_init_link(phba, mbox,
2698                                        phba->cfg_topology,
2699                                        phba->cfg_link_speed);
2700                         mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2701                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2702                         rc = lpfc_sli_issue_mbox
2703                                 (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
2704                         if (rc == MBX_NOT_FINISHED) {
2705                                 mempool_free( mbox, phba->mbox_mem_pool);
2706                         }
2707                         return 1;
2708                 } else if (rc > 0) {    /* greater than */
2709                         spin_lock_irq(phba->host->host_lock);
2710                         phba->fc_flag |= FC_PT2PT_PLOGI;
2711                         spin_unlock_irq(phba->host->host_lock);
2712                 }
2713                 phba->fc_flag |= FC_PT2PT;
2714                 phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2715         } else {
2716                 /* Reject this request because invalid parameters */
2717                 stat.un.b.lsRjtRsvd0 = 0;
2718                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2719                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
2720                 stat.un.b.vendorUnique = 0;
2721                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2722                 return 1;
2723         }
2724
2725         /* Send back ACC */
2726         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, newnode);
2727
2728         return 0;
2729 }
2730
2731 static int
2732 lpfc_els_rcv_rnid(struct lpfc_hba * phba,
2733                   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
2734 {
2735         struct lpfc_dmabuf *pcmd;
2736         uint32_t *lp;
2737         IOCB_t *icmd;
2738         RNID *rn;
2739         struct ls_rjt stat;
2740         uint32_t cmd, did;
2741
2742         icmd = &cmdiocb->iocb;
2743         did = icmd->un.elsreq64.remoteID;
2744         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2745         lp = (uint32_t *) pcmd->virt;
2746
2747         cmd = *lp++;
2748         rn = (RNID *) lp;
2749
2750         /* RNID received */
2751
2752         switch (rn->Format) {
2753         case 0:
2754         case RNID_TOPOLOGY_DISC:
2755                 /* Send back ACC */
2756                 lpfc_els_rsp_rnid_acc(phba, rn->Format, cmdiocb, ndlp);
2757                 break;
2758         default:
2759                 /* Reject this request because format not supported */
2760                 stat.un.b.lsRjtRsvd0 = 0;
2761                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2762                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2763                 stat.un.b.vendorUnique = 0;
2764                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2765         }
2766         return 0;
2767 }
2768
2769 static int
2770 lpfc_els_rcv_lirr(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2771                  struct lpfc_nodelist * ndlp)
2772 {
2773         struct ls_rjt stat;
2774
2775         /* For now, unconditionally reject this command */
2776         stat.un.b.lsRjtRsvd0 = 0;
2777         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2778         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2779         stat.un.b.vendorUnique = 0;
2780         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2781         return 0;
2782 }
2783
2784 static void
2785 lpfc_els_rsp_rps_acc(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
2786 {
2787         struct lpfc_sli *psli;
2788         struct lpfc_sli_ring *pring;
2789         MAILBOX_t *mb;
2790         IOCB_t *icmd;
2791         RPS_RSP *rps_rsp;
2792         uint8_t *pcmd;
2793         struct lpfc_iocbq *elsiocb;
2794         struct lpfc_nodelist *ndlp;
2795         uint16_t xri, status;
2796         uint32_t cmdsize;
2797
2798         psli = &phba->sli;
2799         pring = &psli->ring[LPFC_ELS_RING];
2800         mb = &pmb->mb;
2801
2802         ndlp = (struct lpfc_nodelist *) pmb->context2;
2803         xri = (uint16_t) ((unsigned long)(pmb->context1));
2804         pmb->context1 = NULL;
2805         pmb->context2 = NULL;
2806
2807         if (mb->mbxStatus) {
2808                 mempool_free( pmb, phba->mbox_mem_pool);
2809                 return;
2810         }
2811
2812         cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
2813         mempool_free( pmb, phba->mbox_mem_pool);
2814         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, lpfc_max_els_tries, ndlp,
2815                                                 ndlp->nlp_DID, ELS_CMD_ACC);
2816         if (!elsiocb)
2817                 return;
2818
2819         icmd = &elsiocb->iocb;
2820         icmd->ulpContext = xri;
2821
2822         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2823         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2824         pcmd += sizeof (uint32_t); /* Skip past command */
2825         rps_rsp = (RPS_RSP *)pcmd;
2826
2827         if (phba->fc_topology != TOPOLOGY_LOOP)
2828                 status = 0x10;
2829         else
2830                 status = 0x8;
2831         if (phba->fc_flag & FC_FABRIC)
2832                 status |= 0x4;
2833
2834         rps_rsp->rsvd1 = 0;
2835         rps_rsp->portStatus = be16_to_cpu(status);
2836         rps_rsp->linkFailureCnt = be32_to_cpu(mb->un.varRdLnk.linkFailureCnt);
2837         rps_rsp->lossSyncCnt = be32_to_cpu(mb->un.varRdLnk.lossSyncCnt);
2838         rps_rsp->lossSignalCnt = be32_to_cpu(mb->un.varRdLnk.lossSignalCnt);
2839         rps_rsp->primSeqErrCnt = be32_to_cpu(mb->un.varRdLnk.primSeqErrCnt);
2840         rps_rsp->invalidXmitWord = be32_to_cpu(mb->un.varRdLnk.invalidXmitWord);
2841         rps_rsp->crcCnt = be32_to_cpu(mb->un.varRdLnk.crcCnt);
2842
2843         /* Xmit ELS RPS ACC response tag <ulpIoTag> */
2844         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2845                         "%d:0118 Xmit ELS RPS ACC response tag x%x "
2846                         "Data: x%x x%x x%x x%x x%x\n",
2847                         phba->brd_no,
2848                         elsiocb->iocb.ulpIoTag,
2849                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2850                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2851
2852         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2853         phba->fc_stat.elsXmitACC++;
2854         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2855                 lpfc_els_free_iocb(phba, elsiocb);
2856         }
2857         return;
2858 }
2859
2860 static int
2861 lpfc_els_rcv_rps(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2862                  struct lpfc_nodelist * ndlp)
2863 {
2864         uint32_t *lp;
2865         uint8_t flag;
2866         LPFC_MBOXQ_t *mbox;
2867         struct lpfc_dmabuf *pcmd;
2868         RPS *rps;
2869         struct ls_rjt stat;
2870
2871         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2872             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2873                 stat.un.b.lsRjtRsvd0 = 0;
2874                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2875                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2876                 stat.un.b.vendorUnique = 0;
2877                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2878         }
2879
2880         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2881         lp = (uint32_t *) pcmd->virt;
2882         flag = (be32_to_cpu(*lp++) & 0xf);
2883         rps = (RPS *) lp;
2884
2885         if ((flag == 0) ||
2886             ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
2887             ((flag == 2) && (memcmp(&rps->un.portName, &phba->fc_portname,
2888                            sizeof (struct lpfc_name)) == 0))) {
2889                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC))) {
2890                         lpfc_read_lnk_stat(phba, mbox);
2891                         mbox->context1 =
2892                             (void *)((unsigned long)cmdiocb->iocb.ulpContext);
2893                         mbox->context2 = ndlp;
2894                         mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
2895                         if (lpfc_sli_issue_mbox (phba, mbox,
2896                             (MBX_NOWAIT | MBX_STOP_IOCB)) != MBX_NOT_FINISHED) {
2897                                 /* Mbox completion will send ELS Response */
2898                                 return 0;
2899                         }
2900                         mempool_free(mbox, phba->mbox_mem_pool);
2901                 }
2902         }
2903         stat.un.b.lsRjtRsvd0 = 0;
2904         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2905         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2906         stat.un.b.vendorUnique = 0;
2907         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2908         return 0;
2909 }
2910
2911 static int
2912 lpfc_els_rsp_rpl_acc(struct lpfc_hba * phba, uint16_t cmdsize,
2913                  struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2914 {
2915         IOCB_t *icmd;
2916         IOCB_t *oldcmd;
2917         RPL_RSP rpl_rsp;
2918         struct lpfc_iocbq *elsiocb;
2919         struct lpfc_sli_ring *pring;
2920         struct lpfc_sli *psli;
2921         uint8_t *pcmd;
2922
2923         psli = &phba->sli;
2924         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2925
2926         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2927                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2928         if (!elsiocb)
2929                 return 1;
2930
2931         icmd = &elsiocb->iocb;
2932         oldcmd = &oldiocb->iocb;
2933         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2934
2935         pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2936         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2937         pcmd += sizeof (uint16_t);
2938         *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
2939         pcmd += sizeof(uint16_t);
2940
2941         /* Setup the RPL ACC payload */
2942         rpl_rsp.listLen = be32_to_cpu(1);
2943         rpl_rsp.index = 0;
2944         rpl_rsp.port_num_blk.portNum = 0;
2945         rpl_rsp.port_num_blk.portID = be32_to_cpu(phba->fc_myDID);
2946         memcpy(&rpl_rsp.port_num_blk.portName, &phba->fc_portname,
2947             sizeof(struct lpfc_name));
2948
2949         memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
2950
2951
2952         /* Xmit ELS RPL ACC response tag <ulpIoTag> */
2953         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2954                         "%d:0120 Xmit ELS RPL ACC response tag x%x "
2955                         "Data: x%x x%x x%x x%x x%x\n",
2956                         phba->brd_no,
2957                         elsiocb->iocb.ulpIoTag,
2958                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2959                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2960
2961         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2962
2963         phba->fc_stat.elsXmitACC++;
2964         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2965                 lpfc_els_free_iocb(phba, elsiocb);
2966                 return 1;
2967         }
2968         return 0;
2969 }
2970
2971 static int
2972 lpfc_els_rcv_rpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2973                  struct lpfc_nodelist * ndlp)
2974 {
2975         struct lpfc_dmabuf *pcmd;
2976         uint32_t *lp;
2977         uint32_t maxsize;
2978         uint16_t cmdsize;
2979         RPL *rpl;
2980         struct ls_rjt stat;
2981
2982         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2983             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2984                 stat.un.b.lsRjtRsvd0 = 0;
2985                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2986                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2987                 stat.un.b.vendorUnique = 0;
2988                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2989         }
2990
2991         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2992         lp = (uint32_t *) pcmd->virt;
2993         rpl = (RPL *) (lp + 1);
2994
2995         maxsize = be32_to_cpu(rpl->maxsize);
2996
2997         /* We support only one port */
2998         if ((rpl->index == 0) &&
2999             ((maxsize == 0) ||
3000              ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
3001                 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
3002         } else {
3003                 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
3004         }
3005         lpfc_els_rsp_rpl_acc(phba, cmdsize, cmdiocb, ndlp);
3006
3007         return 0;
3008 }
3009
3010 static int
3011 lpfc_els_rcv_farp(struct lpfc_hba * phba,
3012                   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
3013 {
3014         struct lpfc_dmabuf *pcmd;
3015         uint32_t *lp;
3016         IOCB_t *icmd;
3017         FARP *fp;
3018         uint32_t cmd, cnt, did;
3019
3020         icmd = &cmdiocb->iocb;
3021         did = icmd->un.elsreq64.remoteID;
3022         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3023         lp = (uint32_t *) pcmd->virt;
3024
3025         cmd = *lp++;
3026         fp = (FARP *) lp;
3027
3028         /* FARP-REQ received from DID <did> */
3029         lpfc_printf_log(phba,
3030                          KERN_INFO,
3031                          LOG_ELS,
3032                          "%d:0601 FARP-REQ received from DID x%x\n",
3033                          phba->brd_no, did);
3034
3035         /* We will only support match on WWPN or WWNN */
3036         if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
3037                 return 0;
3038         }
3039
3040         cnt = 0;
3041         /* If this FARP command is searching for my portname */
3042         if (fp->Mflags & FARP_MATCH_PORT) {
3043                 if (memcmp(&fp->RportName, &phba->fc_portname,
3044                            sizeof (struct lpfc_name)) == 0)
3045                         cnt = 1;
3046         }
3047
3048         /* If this FARP command is searching for my nodename */
3049         if (fp->Mflags & FARP_MATCH_NODE) {
3050                 if (memcmp(&fp->RnodeName, &phba->fc_nodename,
3051                            sizeof (struct lpfc_name)) == 0)
3052                         cnt = 1;
3053         }
3054
3055         if (cnt) {
3056                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
3057                    (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
3058                         /* Log back into the node before sending the FARP. */
3059                         if (fp->Rflags & FARP_REQUEST_PLOGI) {
3060                                 ndlp->nlp_prev_state = ndlp->nlp_state;
3061                                 lpfc_nlp_set_state(phba, ndlp,
3062                                                    NLP_STE_PLOGI_ISSUE);
3063                                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
3064                         }
3065
3066                         /* Send a FARP response to that node */
3067                         if (fp->Rflags & FARP_REQUEST_FARPR) {
3068                                 lpfc_issue_els_farpr(phba, did, 0);
3069                         }
3070                 }
3071         }
3072         return 0;
3073 }
3074
3075 static int
3076 lpfc_els_rcv_farpr(struct lpfc_hba * phba,
3077                    struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
3078 {
3079         struct lpfc_dmabuf *pcmd;
3080         uint32_t *lp;
3081         IOCB_t *icmd;
3082         uint32_t cmd, did;
3083
3084         icmd = &cmdiocb->iocb;
3085         did = icmd->un.elsreq64.remoteID;
3086         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3087         lp = (uint32_t *) pcmd->virt;
3088
3089         cmd = *lp++;
3090         /* FARP-RSP received from DID <did> */
3091         lpfc_printf_log(phba,
3092                          KERN_INFO,
3093                          LOG_ELS,
3094                          "%d:0600 FARP-RSP received from DID x%x\n",
3095                          phba->brd_no, did);
3096
3097         /* ACCEPT the Farp resp request */
3098         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
3099
3100         return 0;
3101 }
3102
3103 static int
3104 lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
3105                  struct lpfc_nodelist * fan_ndlp)
3106 {
3107         struct lpfc_dmabuf *pcmd;
3108         uint32_t *lp;
3109         IOCB_t *icmd;
3110         uint32_t cmd, did;
3111         FAN *fp;
3112         struct lpfc_nodelist *ndlp, *next_ndlp;
3113
3114         /* FAN received */
3115         lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "%d:0265 FAN received\n",
3116                                                                 phba->brd_no);
3117
3118         icmd = &cmdiocb->iocb;
3119         did = icmd->un.elsreq64.remoteID;
3120         pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
3121         lp = (uint32_t *)pcmd->virt;
3122
3123         cmd = *lp++;
3124         fp = (FAN *)lp;
3125
3126         /* FAN received; Fan does not have a reply sequence */
3127
3128         if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
3129                 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
3130                         sizeof(struct lpfc_name)) != 0) ||
3131                     (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
3132                         sizeof(struct lpfc_name)) != 0)) {
3133                         /*
3134                          * This node has switched fabrics.  FLOGI is required
3135                          * Clean up the old rpi's
3136                          */
3137
3138                         list_for_each_entry_safe(ndlp, next_ndlp,
3139                                 &phba->fc_npr_list, nlp_listp) {
3140
3141                                 if (ndlp->nlp_type & NLP_FABRIC) {
3142                                         /*
3143                                          * Clean up old Fabric, Nameserver and
3144                                          * other NLP_FABRIC logins
3145                                          */
3146                                         lpfc_drop_node(phba, ndlp);
3147                                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3148                                         /* Fail outstanding I/O now since this
3149                                          * device is marked for PLOGI
3150                                          */
3151                                         lpfc_unreg_rpi(phba, ndlp);
3152                                 }
3153                         }
3154
3155                         phba->hba_state = LPFC_FLOGI;
3156                         lpfc_set_disctmo(phba);
3157                         lpfc_initial_flogi(phba);
3158                         return 0;
3159                 }
3160                 /* Discovery not needed,
3161                  * move the nodes to their original state.
3162                  */
3163                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
3164                         nlp_listp) {
3165
3166                         switch (ndlp->nlp_prev_state) {
3167                         case NLP_STE_UNMAPPED_NODE:
3168                                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3169                                 lpfc_nlp_set_state(phba, ndlp,
3170                                                    NLP_STE_UNMAPPED_NODE);
3171                                 break;
3172
3173                         case NLP_STE_MAPPED_NODE:
3174                                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3175                                 lpfc_nlp_set_state(phba, ndlp,
3176                                                    NLP_STE_MAPPED_NODE);
3177                                 break;
3178
3179                         default:
3180                                 break;
3181                         }
3182                 }
3183
3184                 /* Start discovery - this should just do CLEAR_LA */
3185                 lpfc_disc_start(phba);
3186         }
3187         return 0;
3188 }
3189
3190 void
3191 lpfc_els_timeout(unsigned long ptr)
3192 {
3193         struct lpfc_hba *phba;
3194         unsigned long iflag;
3195
3196         phba = (struct lpfc_hba *)ptr;
3197         if (phba == 0)
3198                 return;
3199         spin_lock_irqsave(phba->host->host_lock, iflag);
3200         if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
3201                 phba->work_hba_events |= WORKER_ELS_TMO;
3202                 if (phba->work_wait)
3203                         wake_up(phba->work_wait);
3204         }
3205         spin_unlock_irqrestore(phba->host->host_lock, iflag);
3206         return;
3207 }
3208
3209 void
3210 lpfc_els_timeout_handler(struct lpfc_hba *phba)
3211 {
3212         struct lpfc_sli_ring *pring;
3213         struct lpfc_iocbq *tmp_iocb, *piocb;
3214         IOCB_t *cmd = NULL;
3215         struct lpfc_dmabuf *pcmd;
3216         uint32_t *elscmd;
3217         uint32_t els_command;
3218         uint32_t timeout;
3219         uint32_t remote_ID;
3220
3221         if (phba == 0)
3222                 return;
3223         spin_lock_irq(phba->host->host_lock);
3224         /* If the timer is already canceled do nothing */
3225         if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
3226                 spin_unlock_irq(phba->host->host_lock);
3227                 return;
3228         }
3229         timeout = (uint32_t)(phba->fc_ratov << 1);
3230
3231         pring = &phba->sli.ring[LPFC_ELS_RING];
3232
3233         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
3234                 cmd = &piocb->iocb;
3235
3236                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3237                         continue;
3238                 }
3239                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3240                 elscmd = (uint32_t *) (pcmd->virt);
3241                 els_command = *elscmd;
3242
3243                 if ((els_command == ELS_CMD_FARP)
3244                     || (els_command == ELS_CMD_FARPR)) {
3245                         continue;
3246                 }
3247
3248                 if (piocb->drvrTimeout > 0) {
3249                         if (piocb->drvrTimeout >= timeout) {
3250                                 piocb->drvrTimeout -= timeout;
3251                         } else {
3252                                 piocb->drvrTimeout = 0;
3253                         }
3254                         continue;
3255                 }
3256
3257                 if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
3258                         struct lpfc_nodelist *ndlp;
3259                         ndlp = __lpfc_findnode_rpi(phba, cmd->ulpContext);
3260                         remote_ID = ndlp->nlp_DID;
3261                 } else {
3262                         remote_ID = cmd->un.elsreq64.remoteID;
3263                 }
3264
3265                 lpfc_printf_log(phba,
3266                                 KERN_ERR,
3267                                 LOG_ELS,
3268                                 "%d:0127 ELS timeout Data: x%x x%x x%x x%x\n",
3269                                 phba->brd_no, els_command,
3270                                 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
3271
3272                 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
3273         }
3274         if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
3275                 mod_timer(&phba->els_tmofunc, jiffies + HZ * timeout);
3276
3277         spin_unlock_irq(phba->host->host_lock);
3278 }
3279
3280 void
3281 lpfc_els_flush_cmd(struct lpfc_hba * phba)
3282 {
3283         LIST_HEAD(completions);
3284         struct lpfc_sli_ring *pring;
3285         struct lpfc_iocbq *tmp_iocb, *piocb;
3286         IOCB_t *cmd = NULL;
3287
3288         pring = &phba->sli.ring[LPFC_ELS_RING];
3289         spin_lock_irq(phba->host->host_lock);
3290         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
3291                 cmd = &piocb->iocb;
3292
3293                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3294                         continue;
3295                 }
3296
3297                 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
3298                 if ((cmd->ulpCommand == CMD_QUE_RING_BUF_CN) ||
3299                     (cmd->ulpCommand == CMD_QUE_RING_BUF64_CN) ||
3300                     (cmd->ulpCommand == CMD_CLOSE_XRI_CN) ||
3301                     (cmd->ulpCommand == CMD_ABORT_XRI_CN)) {
3302                         continue;
3303                 }
3304
3305                 list_move_tail(&piocb->list, &completions);
3306                 pring->txq_cnt--;
3307
3308         }
3309
3310         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
3311                 cmd = &piocb->iocb;
3312
3313                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3314                         continue;
3315                 }
3316
3317                 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
3318         }
3319         spin_unlock_irq(phba->host->host_lock);
3320
3321         while(!list_empty(&completions)) {
3322                 piocb = list_get_first(&completions, struct lpfc_iocbq, list);
3323                 cmd = &piocb->iocb;
3324                 list_del(&piocb->list);
3325
3326                 if (piocb->iocb_cmpl) {
3327                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3328                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3329                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3330                 } else
3331                         lpfc_sli_release_iocbq(phba, piocb);
3332         }
3333
3334         return;
3335 }
3336
3337 void
3338 lpfc_els_unsol_event(struct lpfc_hba * phba,
3339                      struct lpfc_sli_ring * pring, struct lpfc_iocbq * elsiocb)
3340 {
3341         struct lpfc_sli *psli;
3342         struct lpfc_nodelist *ndlp;
3343         struct lpfc_dmabuf *mp;
3344         uint32_t *lp;
3345         IOCB_t *icmd;
3346         struct ls_rjt stat;
3347         uint32_t cmd;
3348         uint32_t did;
3349         uint32_t newnode;
3350         uint32_t drop_cmd = 0;  /* by default do NOT drop received cmd */
3351         uint32_t rjt_err = 0;
3352
3353         psli = &phba->sli;
3354         icmd = &elsiocb->iocb;
3355
3356         if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) &&
3357                 ((icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING)) {
3358                 /* Not enough posted buffers; Try posting more buffers */
3359                 phba->fc_stat.NoRcvBuf++;
3360                 lpfc_post_buffer(phba, pring, 0, 1);
3361                 return;
3362         }
3363
3364         /* If there are no BDEs associated with this IOCB,
3365          * there is nothing to do.
3366          */
3367         if (icmd->ulpBdeCount == 0)
3368                 return;
3369
3370         /* type of ELS cmd is first 32bit word in packet */
3371         mp = lpfc_sli_ringpostbuf_get(phba, pring, getPaddr(icmd->un.
3372                                                             cont64[0].
3373                                                             addrHigh,
3374                                                             icmd->un.
3375                                                             cont64[0].addrLow));
3376         if (mp == 0) {
3377                 drop_cmd = 1;
3378                 goto dropit;
3379         }
3380
3381         newnode = 0;
3382         lp = (uint32_t *) mp->virt;
3383         cmd = *lp++;
3384         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], 1, 1);
3385
3386         if (icmd->ulpStatus) {
3387                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3388                 kfree(mp);
3389                 drop_cmd = 1;
3390                 goto dropit;
3391         }
3392
3393         /* Check to see if link went down during discovery */
3394         if (lpfc_els_chk_latt(phba)) {
3395                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3396                 kfree(mp);
3397                 drop_cmd = 1;
3398                 goto dropit;
3399         }
3400
3401         did = icmd->un.rcvels.remoteID;
3402         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
3403         if (!ndlp) {
3404                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3405                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3406                 if (!ndlp) {
3407                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3408                         kfree(mp);
3409                         drop_cmd = 1;
3410                         goto dropit;
3411                 }
3412
3413                 lpfc_nlp_init(phba, ndlp, did);
3414                 newnode = 1;
3415                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) {
3416                         ndlp->nlp_type |= NLP_FABRIC;
3417                 }
3418                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
3419         }
3420
3421         phba->fc_stat.elsRcvFrame++;
3422         elsiocb->context1 = ndlp;
3423         elsiocb->context2 = mp;
3424
3425         if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
3426                 cmd &= ELS_CMD_MASK;
3427         }
3428         /* ELS command <elsCmd> received from NPORT <did> */
3429         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3430                         "%d:0112 ELS command x%x received from NPORT x%x "
3431                         "Data: x%x\n", phba->brd_no, cmd, did, phba->hba_state);
3432
3433         switch (cmd) {
3434         case ELS_CMD_PLOGI:
3435                 phba->fc_stat.elsRcvPLOGI++;
3436                 if (phba->hba_state < LPFC_DISC_AUTH) {
3437                         rjt_err = 1;
3438                         break;
3439                 }
3440                 ndlp = lpfc_plogi_confirm_nport(phba, mp, ndlp);
3441                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PLOGI);
3442                 break;
3443         case ELS_CMD_FLOGI:
3444                 phba->fc_stat.elsRcvFLOGI++;
3445                 lpfc_els_rcv_flogi(phba, elsiocb, ndlp, newnode);
3446                 if (newnode)
3447                         lpfc_drop_node(phba, ndlp);
3448                 break;
3449         case ELS_CMD_LOGO:
3450                 phba->fc_stat.elsRcvLOGO++;
3451                 if (phba->hba_state < LPFC_DISC_AUTH) {
3452                         rjt_err = 1;
3453                         break;
3454                 }
3455                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
3456                 break;
3457         case ELS_CMD_PRLO:
3458                 phba->fc_stat.elsRcvPRLO++;
3459                 if (phba->hba_state < LPFC_DISC_AUTH) {
3460                         rjt_err = 1;
3461                         break;
3462                 }
3463                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
3464                 break;
3465         case ELS_CMD_RSCN:
3466                 phba->fc_stat.elsRcvRSCN++;
3467                 lpfc_els_rcv_rscn(phba, elsiocb, ndlp, newnode);
3468                 if (newnode)
3469                         lpfc_drop_node(phba, ndlp);
3470                 break;
3471         case ELS_CMD_ADISC:
3472                 phba->fc_stat.elsRcvADISC++;
3473                 if (phba->hba_state < LPFC_DISC_AUTH) {
3474                         rjt_err = 1;
3475                         break;
3476                 }
3477                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_ADISC);
3478                 break;
3479         case ELS_CMD_PDISC:
3480                 phba->fc_stat.elsRcvPDISC++;
3481                 if (phba->hba_state < LPFC_DISC_AUTH) {
3482                         rjt_err = 1;
3483                         break;
3484                 }
3485                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PDISC);
3486                 break;
3487         case ELS_CMD_FARPR:
3488                 phba->fc_stat.elsRcvFARPR++;
3489                 lpfc_els_rcv_farpr(phba, elsiocb, ndlp);
3490                 break;
3491         case ELS_CMD_FARP:
3492                 phba->fc_stat.elsRcvFARP++;
3493                 lpfc_els_rcv_farp(phba, elsiocb, ndlp);
3494                 break;
3495         case ELS_CMD_FAN:
3496                 phba->fc_stat.elsRcvFAN++;
3497                 lpfc_els_rcv_fan(phba, elsiocb, ndlp);
3498                 break;
3499         case ELS_CMD_PRLI:
3500                 phba->fc_stat.elsRcvPRLI++;
3501                 if (phba->hba_state < LPFC_DISC_AUTH) {
3502                         rjt_err = 1;
3503                         break;
3504                 }
3505                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
3506                 break;
3507         case ELS_CMD_LIRR:
3508                 phba->fc_stat.elsRcvLIRR++;
3509                 lpfc_els_rcv_lirr(phba, elsiocb, ndlp);
3510                 if (newnode)
3511                         lpfc_drop_node(phba, ndlp);
3512                 break;
3513         case ELS_CMD_RPS:
3514                 phba->fc_stat.elsRcvRPS++;
3515                 lpfc_els_rcv_rps(phba, elsiocb, ndlp);
3516                 if (newnode)
3517                         lpfc_drop_node(phba, ndlp);
3518                 break;
3519         case ELS_CMD_RPL:
3520                 phba->fc_stat.elsRcvRPL++;
3521                 lpfc_els_rcv_rpl(phba, elsiocb, ndlp);
3522                 if (newnode)
3523                         lpfc_drop_node(phba, ndlp);
3524                 break;
3525         case ELS_CMD_RNID:
3526                 phba->fc_stat.elsRcvRNID++;
3527                 lpfc_els_rcv_rnid(phba, elsiocb, ndlp);
3528                 if (newnode)
3529                         lpfc_drop_node(phba, ndlp);
3530                 break;
3531         default:
3532                 /* Unsupported ELS command, reject */
3533                 rjt_err = 1;
3534
3535                 /* Unknown ELS command <elsCmd> received from NPORT <did> */
3536                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
3537                                 "%d:0115 Unknown ELS command x%x received from "
3538                                 "NPORT x%x\n", phba->brd_no, cmd, did);
3539                 if (newnode)
3540                         lpfc_drop_node(phba, ndlp);
3541                 break;
3542         }
3543
3544         /* check if need to LS_RJT received ELS cmd */
3545         if (rjt_err) {
3546                 stat.un.b.lsRjtRsvd0 = 0;
3547                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
3548                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
3549                 stat.un.b.vendorUnique = 0;
3550                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, elsiocb, ndlp);
3551         }
3552
3553         if (elsiocb->context2) {
3554                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3555                 kfree(mp);
3556         }
3557 dropit:
3558         /* check if need to drop received ELS cmd */
3559         if (drop_cmd == 1) {
3560                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
3561                                 "%d:0111 Dropping received ELS cmd "
3562                                 "Data: x%x x%x x%x\n", phba->brd_no,
3563                                 icmd->ulpStatus, icmd->un.ulpWord[4],
3564                                 icmd->ulpTimeout);
3565                 phba->fc_stat.elsRcvDrop++;
3566         }
3567         return;
3568 }