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 Data: x%x x%x\n",
 226                                 phba->brd_no, elscmd,
 227                                 did, icmd->ulpIoTag, 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 Data: x%x x%x\n",
 233                                 phba->brd_no, elscmd,
 234                                 ndlp->nlp_DID, icmd->ulpIoTag, 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         int rc;
 247
 248         spin_lock_irq(phba->host->host_lock);
 249         phba->fc_flag |= FC_FABRIC;
 250         spin_unlock_irq(phba->host->host_lock);
 251
 252         phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
 253         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
 254                 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
 255
 256         phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
 257
 258         if (phba->fc_topology == TOPOLOGY_LOOP) {
 259                 spin_lock_irq(phba->host->host_lock);
 260                 phba->fc_flag |= FC_PUBLIC_LOOP;
 261                 spin_unlock_irq(phba->host->host_lock);
 262         } else {
 263                 /*
 264                  * If we are a N-port connected to a Fabric, fixup sparam's so
 265                  * logins to devices on remote loops work.
 266                  */
 267                 phba->fc_sparam.cmn.altBbCredit = 1;
 268         }
 269
 270         phba->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
 271         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
 272         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 273         ndlp->nlp_class_sup = 0;
 274         if (sp->cls1.classValid)
 275                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 276         if (sp->cls2.classValid)
 277                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 278         if (sp->cls3.classValid)
 279                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 280         if (sp->cls4.classValid)
 281                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 282         ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 283                                 sp->cmn.bbRcvSizeLsb;
 284         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 285
 286         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 287         if (!mbox)
 288                 goto fail;
 289
 290         phba->hba_state = LPFC_FABRIC_CFG_LINK;
 291         lpfc_config_link(phba, mbox);
 292         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 293
 294         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
 295         if (rc == MBX_NOT_FINISHED)
 296                 goto fail_free_mbox;
 297
 298         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 299         if (!mbox)
 300                 goto fail;
 301
 302         if (lpfc_reg_login(phba, Fabric_DID, (uint8_t *) sp, mbox, 0))
 303                 goto fail_free_mbox;
 304
 305         /*
 306          * set_slim mailbox command needs to execute first,
 307          * queue this command to be processed later.
 308          */
 309         mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
 310         mbox->context2 = ndlp;
 311
 312         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
 313         if (rc == MBX_NOT_FINISHED)
 314                 goto fail_free_mbox;
 315
 316         return 0;
 317
 318  fail_free_mbox:
 319         mempool_free(mbox, phba->mbox_mem_pool);
 320  fail:
 321         return -ENXIO;
 322 }
 323
 324 /*
 325  * We FLOGIed into an NPort, initiate pt2pt protocol
 326  */
 327 static int
 328 lpfc_cmpl_els_flogi_nport(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
 329                 struct serv_parm *sp)
 330 {
 331         LPFC_MBOXQ_t *mbox;
 332         int rc;
 333
 334         spin_lock_irq(phba->host->host_lock);
 335         phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 336         spin_unlock_irq(phba->host->host_lock);
 337
 338         phba->fc_edtov = FF_DEF_EDTOV;
 339         phba->fc_ratov = FF_DEF_RATOV;
 340         rc = memcmp(&phba->fc_portname, &sp->portName,
 341                         sizeof(struct lpfc_name));
 342         if (rc >= 0) {
 343                 /* This side will initiate the PLOGI */
 344                 spin_lock_irq(phba->host->host_lock);
 345                 phba->fc_flag |= FC_PT2PT_PLOGI;
 346                 spin_unlock_irq(phba->host->host_lock);
 347
 348                 /*
 349                  * N_Port ID cannot be 0, set our to LocalID the other
 350                  * side will be RemoteID.
 351                  */
 352
 353                 /* not equal */
 354                 if (rc)
 355                         phba->fc_myDID = PT2PT_LocalID;
 356
 357                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 358                 if (!mbox)
 359                         goto fail;
 360
 361                 lpfc_config_link(phba, mbox);
 362
 363                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 364                 rc = lpfc_sli_issue_mbox(phba, mbox,
 365                                 MBX_NOWAIT | MBX_STOP_IOCB);
 366                 if (rc == MBX_NOT_FINISHED) {
 367                         mempool_free(mbox, phba->mbox_mem_pool);
 368                         goto fail;
 369                 }
 370                 mempool_free(ndlp, phba->nlp_mem_pool);
 371
 372                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, PT2PT_RemoteID);
 373                 if (!ndlp) {
 374                         /*
 375                          * Cannot find existing Fabric ndlp, so allocate a
 376                          * new one
 377                          */
 378                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 379                         if (!ndlp)
 380                                 goto fail;
 381
 382                         lpfc_nlp_init(phba, ndlp, PT2PT_RemoteID);
 383                 }
 384
 385                 memcpy(&ndlp->nlp_portname, &sp->portName,
 386                                 sizeof(struct lpfc_name));
 387                 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
 388                                 sizeof(struct lpfc_name));
 389                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 390                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 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                                 list_del(&iocb->list);
 586                                 pring->txcmplq_cnt--;
 587
 588                                 if ((icmd->un.elsreq64.bdl.ulpIoTag32)) {
 589                                         lpfc_sli_issue_abort_iotag32
 590                                                 (phba, pring, iocb);
 591                                 }
 592                                 if (iocb->iocb_cmpl) {
 593                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 594                                         icmd->un.ulpWord[4] =
 595                                             IOERR_SLI_ABORTED;
 596                                         spin_unlock_irq(phba->host->host_lock);
 597                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 598                                         spin_lock_irq(phba->host->host_lock);
 599                                 } else
 600                                         lpfc_sli_release_iocbq(phba, iocb);
 601                         }
 602                 }
 603         }
 604         spin_unlock_irq(phba->host->host_lock);
 605
 606         return 0;
 607 }
 608
 609 int
 610 lpfc_initial_flogi(struct lpfc_hba * phba)
 611 {
 612         struct lpfc_nodelist *ndlp;
 613
 614         /* First look for the Fabric ndlp */
 615         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, Fabric_DID);
 616         if (!ndlp) {
 617                 /* Cannot find existing Fabric ndlp, so allocate a new one */
 618                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 619                 if (!ndlp)
 620                         return 0;
 621                 lpfc_nlp_init(phba, ndlp, Fabric_DID);
 622         } else {
 623                 lpfc_nlp_list(phba, ndlp, NLP_JUST_DQ);
 624         }
 625         if (lpfc_issue_els_flogi(phba, ndlp, 0)) {
 626                 mempool_free( ndlp, phba->nlp_mem_pool);
 627         }
 628         return 1;
 629 }
 630
 631 static void
 632 lpfc_more_plogi(struct lpfc_hba * phba)
 633 {
 634         int sentplogi;
 635
 636         if (phba->num_disc_nodes)
 637                 phba->num_disc_nodes--;
 638
 639         /* Continue discovery with <num_disc_nodes> PLOGIs to go */
 640         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 641                         "%d:0232 Continue discovery with %d PLOGIs to go "
 642                         "Data: x%x x%x x%x\n",
 643                         phba->brd_no, phba->num_disc_nodes, phba->fc_plogi_cnt,
 644                         phba->fc_flag, phba->hba_state);
 645
 646         /* Check to see if there are more PLOGIs to be sent */
 647         if (phba->fc_flag & FC_NLP_MORE) {
 648                 /* go thru NPR list and issue any remaining ELS PLOGIs */
 649                 sentplogi = lpfc_els_disc_plogi(phba);
 650         }
 651         return;
 652 }
 653
 654 static struct lpfc_nodelist *
 655 lpfc_plogi_confirm_nport(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 656                          struct lpfc_nodelist *ndlp)
 657 {
 658         struct lpfc_nodelist *new_ndlp;
 659         struct lpfc_dmabuf *pcmd, *prsp;
 660         uint32_t *lp;
 661         struct serv_parm *sp;
 662         uint8_t name[sizeof (struct lpfc_name)];
 663         uint32_t rc;
 664
 665         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 666         prsp = (struct lpfc_dmabuf *) pcmd->list.next;
 667         lp = (uint32_t *) prsp->virt;
 668         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 669
 670         /* Now we to find out if the NPort we are logging into, matches the WWPN
 671          * we have for that ndlp. If not, we have some work to do.
 672          */
 673         new_ndlp = lpfc_findnode_wwpn(phba, NLP_SEARCH_ALL, &sp->portName);
 674
 675         memset(name, 0, sizeof (struct lpfc_name));
 676         rc =  memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name));
 677         if (!rc || (new_ndlp == ndlp)) {
 678                 return ndlp;
 679         }
 680
 681         if (!new_ndlp) {
 682                 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
 683                 if (!new_ndlp)
 684                         return ndlp;
 685
 686                 lpfc_nlp_init(phba, new_ndlp, ndlp->nlp_DID);
 687         }
 688
 689         lpfc_unreg_rpi(phba, new_ndlp);
 690         new_ndlp->nlp_prev_state = ndlp->nlp_state;
 691         new_ndlp->nlp_DID = ndlp->nlp_DID;
 692         new_ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 693         lpfc_nlp_list(phba, new_ndlp, NLP_PLOGI_LIST);
 694
 695         /* Move this back to NPR list */
 696         lpfc_unreg_rpi(phba, ndlp);
 697         ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */
 698         ndlp->nlp_state = NLP_STE_NPR_NODE;
 699         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 700
 701         return new_ndlp;
 702 }
 703
 704 static void
 705 lpfc_cmpl_els_plogi(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 706                     struct lpfc_iocbq * rspiocb)
 707 {
 708         IOCB_t *irsp;
 709         struct lpfc_nodelist *ndlp;
 710         int disc, rc, did, type;
 711
 712
 713         /* we pass cmdiocb to state machine which needs rspiocb as well */
 714         cmdiocb->context_un.rsp_iocb = rspiocb;
 715
 716         irsp = &rspiocb->iocb;
 717         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL,
 718                                                 irsp->un.elsreq64.remoteID);
 719         if (!ndlp)
 720                 goto out;
 721
 722         /* Since ndlp can be freed in the disc state machine, note if this node
 723          * is being used during discovery.
 724          */
 725         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
 726         spin_lock_irq(phba->host->host_lock);
 727         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 728         spin_unlock_irq(phba->host->host_lock);
 729         rc   = 0;
 730
 731         /* PLOGI completes to NPort <nlp_DID> */
 732         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 733                         "%d:0102 PLOGI completes to NPort x%x "
 734                         "Data: x%x x%x x%x x%x x%x\n",
 735                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
 736                         irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
 737                         phba->num_disc_nodes);
 738
 739         /* Check to see if link went down during discovery */
 740         if (lpfc_els_chk_latt(phba)) {
 741                 spin_lock_irq(phba->host->host_lock);
 742                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 743                 spin_unlock_irq(phba->host->host_lock);
 744                 goto out;
 745         }
 746
 747         /* ndlp could be freed in DSM, save these values now */
 748         type = ndlp->nlp_type;
 749         did = ndlp->nlp_DID;
 750
 751         if (irsp->ulpStatus) {
 752                 /* Check for retry */
 753                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 754                         /* ELS command is being retried */
 755                         if (disc) {
 756                                 spin_lock_irq(phba->host->host_lock);
 757                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 758                                 spin_unlock_irq(phba->host->host_lock);
 759                         }
 760                         goto out;
 761                 }
 762
 763                 /* PLOGI failed */
 764                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
 765                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
 766                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
 767                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
 768                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
 769                         rc = NLP_STE_FREED_NODE;
 770                 } else {
 771                         rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 772                                         NLP_EVT_CMPL_PLOGI);
 773                 }
 774         } else {
 775                 /* Good status, call state machine */
 776                 ndlp = lpfc_plogi_confirm_nport(phba, cmdiocb, ndlp);
 777                 rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 778                                         NLP_EVT_CMPL_PLOGI);
 779         }
 780
 781         if (disc && phba->num_disc_nodes) {
 782                 /* Check to see if there are more PLOGIs to be sent */
 783                 lpfc_more_plogi(phba);
 784         }
 785
 786         if (phba->num_disc_nodes == 0) {
 787                 spin_lock_irq(phba->host->host_lock);
 788                 phba->fc_flag &= ~FC_NDISC_ACTIVE;
 789                 spin_unlock_irq(phba->host->host_lock);
 790
 791                 lpfc_can_disctmo(phba);
 792                 if (phba->fc_flag & FC_RSCN_MODE) {
 793                         /* Check to see if more RSCNs came in while we were
 794                          * processing this one.
 795                          */
 796                         if ((phba->fc_rscn_id_cnt == 0) &&
 797                             (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
 798                                 spin_lock_irq(phba->host->host_lock);
 799                                 phba->fc_flag &= ~FC_RSCN_MODE;
 800                                 spin_unlock_irq(phba->host->host_lock);
 801                         } else {
 802                                 lpfc_els_handle_rscn(phba);
 803                         }
 804                 }
 805         }
 806
 807 out:
 808         lpfc_els_free_iocb(phba, cmdiocb);
 809         return;
 810 }
 811
 812 int
 813 lpfc_issue_els_plogi(struct lpfc_hba * phba, uint32_t did, uint8_t retry)
 814 {
 815         struct serv_parm *sp;
 816         IOCB_t *icmd;
 817         struct lpfc_iocbq *elsiocb;
 818         struct lpfc_sli_ring *pring;
 819         struct lpfc_sli *psli;
 820         uint8_t *pcmd;
 821         uint16_t cmdsize;
 822
 823         psli = &phba->sli;
 824         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 825
 826         cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
 827         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, 0, did,
 828                                                                 ELS_CMD_PLOGI);
 829         if (!elsiocb)
 830                 return 1;
 831
 832         icmd = &elsiocb->iocb;
 833         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 834
 835         /* For PLOGI request, remainder of payload is service parameters */
 836         *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
 837         pcmd += sizeof (uint32_t);
 838         memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
 839         sp = (struct serv_parm *) pcmd;
 840
 841         if (sp->cmn.fcphLow < FC_PH_4_3)
 842                 sp->cmn.fcphLow = FC_PH_4_3;
 843
 844         if (sp->cmn.fcphHigh < FC_PH3)
 845                 sp->cmn.fcphHigh = FC_PH3;
 846
 847         phba->fc_stat.elsXmitPLOGI++;
 848         elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
 849         spin_lock_irq(phba->host->host_lock);
 850         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
 851                 spin_unlock_irq(phba->host->host_lock);
 852                 lpfc_els_free_iocb(phba, elsiocb);
 853                 return 1;
 854         }
 855         spin_unlock_irq(phba->host->host_lock);
 856         return 0;
 857 }
 858
 859 static void
 860 lpfc_cmpl_els_prli(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 861                    struct lpfc_iocbq * rspiocb)
 862 {
 863         IOCB_t *irsp;
 864         struct lpfc_sli *psli;
 865         struct lpfc_nodelist *ndlp;
 866
 867         psli = &phba->sli;
 868         /* we pass cmdiocb to state machine which needs rspiocb as well */
 869         cmdiocb->context_un.rsp_iocb = rspiocb;
 870
 871         irsp = &(rspiocb->iocb);
 872         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
 873         spin_lock_irq(phba->host->host_lock);
 874         ndlp->nlp_flag &= ~NLP_PRLI_SND;
 875         spin_unlock_irq(phba->host->host_lock);
 876
 877         /* PRLI completes to NPort <nlp_DID> */
 878         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 879                         "%d:0103 PRLI completes to NPort x%x "
 880                         "Data: x%x x%x x%x x%x\n",
 881                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
 882                         irsp->un.ulpWord[4], irsp->ulpTimeout,
 883                         phba->num_disc_nodes);
 884
 885         phba->fc_prli_sent--;
 886         /* Check to see if link went down during discovery */
 887         if (lpfc_els_chk_latt(phba))
 888                 goto out;
 889
 890         if (irsp->ulpStatus) {
 891                 /* Check for retry */
 892                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 893                         /* ELS command is being retried */
 894                         goto out;
 895                 }
 896                 /* PRLI failed */
 897                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
 898                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
 899                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
 900                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
 901                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
 902                         goto out;
 903                 } else {
 904                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 905                                         NLP_EVT_CMPL_PRLI);
 906                 }
 907         } else {
 908                 /* Good status, call state machine */
 909                 lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI);
 910         }
 911
 912 out:
 913         lpfc_els_free_iocb(phba, cmdiocb);
 914         return;
 915 }
 916
 917 int
 918 lpfc_issue_els_prli(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 919                     uint8_t retry)
 920 {
 921         PRLI *npr;
 922         IOCB_t *icmd;
 923         struct lpfc_iocbq *elsiocb;
 924         struct lpfc_sli_ring *pring;
 925         struct lpfc_sli *psli;
 926         uint8_t *pcmd;
 927         uint16_t cmdsize;
 928
 929         psli = &phba->sli;
 930         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 931
 932         cmdsize = (sizeof (uint32_t) + sizeof (PRLI));
 933         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
 934                                         ndlp->nlp_DID, ELS_CMD_PRLI);
 935         if (!elsiocb)
 936                 return 1;
 937
 938         icmd = &elsiocb->iocb;
 939         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 940
 941         /* For PRLI request, remainder of payload is service parameters */
 942         memset(pcmd, 0, (sizeof (PRLI) + sizeof (uint32_t)));
 943         *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
 944         pcmd += sizeof (uint32_t);
 945
 946         /* For PRLI, remainder of payload is PRLI parameter page */
 947         npr = (PRLI *) pcmd;
 948         /*
 949          * If our firmware version is 3.20 or later,
 950          * set the following bits for FC-TAPE support.
 951          */
 952         if (phba->vpd.rev.feaLevelHigh >= 0x02) {
 953                 npr->ConfmComplAllowed = 1;
 954                 npr->Retry = 1;
 955                 npr->TaskRetryIdReq = 1;
 956         }
 957         npr->estabImagePair = 1;
 958         npr->readXferRdyDis = 1;
 959
 960         /* For FCP support */
 961         npr->prliType = PRLI_FCP_TYPE;
 962         npr->initiatorFunc = 1;
 963
 964         phba->fc_stat.elsXmitPRLI++;
 965         elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
 966         spin_lock_irq(phba->host->host_lock);
 967         ndlp->nlp_flag |= NLP_PRLI_SND;
 968         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
 969                 ndlp->nlp_flag &= ~NLP_PRLI_SND;
 970                 spin_unlock_irq(phba->host->host_lock);
 971                 lpfc_els_free_iocb(phba, elsiocb);
 972                 return 1;
 973         }
 974         spin_unlock_irq(phba->host->host_lock);
 975         phba->fc_prli_sent++;
 976         return 0;
 977 }
 978
 979 static void
 980 lpfc_more_adisc(struct lpfc_hba * phba)
 981 {
 982         int sentadisc;
 983
 984         if (phba->num_disc_nodes)
 985                 phba->num_disc_nodes--;
 986
 987         /* Continue discovery with <num_disc_nodes> ADISCs to go */
 988         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 989                         "%d:0210 Continue discovery with %d ADISCs to go "
 990                         "Data: x%x x%x x%x\n",
 991                         phba->brd_no, phba->num_disc_nodes, phba->fc_adisc_cnt,
 992                         phba->fc_flag, phba->hba_state);
 993
 994         /* Check to see if there are more ADISCs to be sent */
 995         if (phba->fc_flag & FC_NLP_MORE) {
 996                 lpfc_set_disctmo(phba);
 997
 998                 /* go thru NPR list and issue any remaining ELS ADISCs */
 999                 sentadisc = lpfc_els_disc_adisc(phba);
1000         }
1001         return;
1002 }
1003
1004 static void
1005 lpfc_rscn_disc(struct lpfc_hba * phba)
1006 {
1007         /* RSCN discovery */
1008         /* go thru NPR list and issue ELS PLOGIs */
1009         if (phba->fc_npr_cnt) {
1010                 if (lpfc_els_disc_plogi(phba))
1011                         return;
1012         }
1013         if (phba->fc_flag & FC_RSCN_MODE) {
1014                 /* Check to see if more RSCNs came in while we were
1015                  * processing this one.
1016                  */
1017                 if ((phba->fc_rscn_id_cnt == 0) &&
1018                     (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
1019                         spin_lock_irq(phba->host->host_lock);
1020                         phba->fc_flag &= ~FC_RSCN_MODE;
1021                         spin_unlock_irq(phba->host->host_lock);
1022                 } else {
1023                         lpfc_els_handle_rscn(phba);
1024                 }
1025         }
1026 }
1027
1028 static void
1029 lpfc_cmpl_els_adisc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1030                     struct lpfc_iocbq * rspiocb)
1031 {
1032         IOCB_t *irsp;
1033         struct lpfc_sli *psli;
1034         struct lpfc_nodelist *ndlp;
1035         LPFC_MBOXQ_t *mbox;
1036         int disc, rc;
1037
1038         psli = &phba->sli;
1039
1040         /* we pass cmdiocb to state machine which needs rspiocb as well */
1041         cmdiocb->context_un.rsp_iocb = rspiocb;
1042
1043         irsp = &(rspiocb->iocb);
1044         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1045
1046         /* Since ndlp can be freed in the disc state machine, note if this node
1047          * is being used during discovery.
1048          */
1049         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1050         spin_lock_irq(phba->host->host_lock);
1051         ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1052         spin_unlock_irq(phba->host->host_lock);
1053
1054         /* ADISC completes to NPort <nlp_DID> */
1055         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1056                         "%d:0104 ADISC completes to NPort x%x "
1057                         "Data: x%x x%x x%x x%x x%x\n",
1058                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1059                         irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
1060                         phba->num_disc_nodes);
1061
1062         /* Check to see if link went down during discovery */
1063         if (lpfc_els_chk_latt(phba)) {
1064                 spin_lock_irq(phba->host->host_lock);
1065                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1066                 spin_unlock_irq(phba->host->host_lock);
1067                 goto out;
1068         }
1069
1070         if (irsp->ulpStatus) {
1071                 /* Check for retry */
1072                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1073                         /* ELS command is being retried */
1074                         if (disc) {
1075                                 spin_lock_irq(phba->host->host_lock);
1076                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1077                                 spin_unlock_irq(phba->host->host_lock);
1078                                 lpfc_set_disctmo(phba);
1079                         }
1080                         goto out;
1081                 }
1082                 /* ADISC failed */
1083                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1084                 if ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
1085                    ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
1086                    (irsp->un.ulpWord[4] != IOERR_LINK_DOWN) &&
1087                    (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) {
1088                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1089                                         NLP_EVT_CMPL_ADISC);
1090                 }
1091         } else {
1092                 /* Good status, call state machine */
1093                 lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1094                                         NLP_EVT_CMPL_ADISC);
1095         }
1096
1097         if (disc && phba->num_disc_nodes) {
1098                 /* Check to see if there are more ADISCs to be sent */
1099                 lpfc_more_adisc(phba);
1100
1101                 /* Check to see if we are done with ADISC authentication */
1102                 if (phba->num_disc_nodes == 0) {
1103                         lpfc_can_disctmo(phba);
1104                         /* If we get here, there is nothing left to wait for */
1105                         if ((phba->hba_state < LPFC_HBA_READY) &&
1106                             (phba->hba_state != LPFC_CLEAR_LA)) {
1107                                 /* Link up discovery */
1108                                 if ((mbox = mempool_alloc(phba->mbox_mem_pool,
1109                                                           GFP_KERNEL))) {
1110                                         phba->hba_state = LPFC_CLEAR_LA;
1111                                         lpfc_clear_la(phba, mbox);
1112                                         mbox->mbox_cmpl =
1113                                             lpfc_mbx_cmpl_clear_la;
1114                                         rc = lpfc_sli_issue_mbox
1115                                                 (phba, mbox,
1116                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
1117                                         if (rc == MBX_NOT_FINISHED) {
1118                                                 mempool_free(mbox,
1119                                                      phba->mbox_mem_pool);
1120                                                 lpfc_disc_flush_list(phba);
1121                                                 psli->ring[(psli->ip_ring)].
1122                                                     flag &=
1123                                                     ~LPFC_STOP_IOCB_EVENT;
1124                                                 psli->ring[(psli->fcp_ring)].
1125                                                     flag &=
1126                                                     ~LPFC_STOP_IOCB_EVENT;
1127                                                 psli->ring[(psli->next_ring)].
1128                                                     flag &=
1129                                                     ~LPFC_STOP_IOCB_EVENT;
1130                                                 phba->hba_state =
1131                                                     LPFC_HBA_READY;
1132                                         }
1133                                 }
1134                         } else {
1135                                 lpfc_rscn_disc(phba);
1136                         }
1137                 }
1138         }
1139 out:
1140         lpfc_els_free_iocb(phba, cmdiocb);
1141         return;
1142 }
1143
1144 int
1145 lpfc_issue_els_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
1146                      uint8_t retry)
1147 {
1148         ADISC *ap;
1149         IOCB_t *icmd;
1150         struct lpfc_iocbq *elsiocb;
1151         struct lpfc_sli_ring *pring;
1152         struct lpfc_sli *psli;
1153         uint8_t *pcmd;
1154         uint16_t cmdsize;
1155
1156         psli = &phba->sli;
1157         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1158
1159         cmdsize = (sizeof (uint32_t) + sizeof (ADISC));
1160         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1161                                                 ndlp->nlp_DID, ELS_CMD_ADISC);
1162         if (!elsiocb)
1163                 return 1;
1164
1165         icmd = &elsiocb->iocb;
1166         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1167
1168         /* For ADISC request, remainder of payload is service parameters */
1169         *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1170         pcmd += sizeof (uint32_t);
1171
1172         /* Fill in ADISC payload */
1173         ap = (ADISC *) pcmd;
1174         ap->hardAL_PA = phba->fc_pref_ALPA;
1175         memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
1176         memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1177         ap->DID = be32_to_cpu(phba->fc_myDID);
1178
1179         phba->fc_stat.elsXmitADISC++;
1180         elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
1181         spin_lock_irq(phba->host->host_lock);
1182         ndlp->nlp_flag |= NLP_ADISC_SND;
1183         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1184                 ndlp->nlp_flag &= ~NLP_ADISC_SND;
1185                 spin_unlock_irq(phba->host->host_lock);
1186                 lpfc_els_free_iocb(phba, elsiocb);
1187                 return 1;
1188         }
1189         spin_unlock_irq(phba->host->host_lock);
1190         return 0;
1191 }
1192
1193 static void
1194 lpfc_cmpl_els_logo(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1195                    struct lpfc_iocbq * rspiocb)
1196 {
1197         IOCB_t *irsp;
1198         struct lpfc_sli *psli;
1199         struct lpfc_nodelist *ndlp;
1200
1201         psli = &phba->sli;
1202         /* we pass cmdiocb to state machine which needs rspiocb as well */
1203         cmdiocb->context_un.rsp_iocb = rspiocb;
1204
1205         irsp = &(rspiocb->iocb);
1206         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1207         spin_lock_irq(phba->host->host_lock);
1208         ndlp->nlp_flag &= ~NLP_LOGO_SND;
1209         spin_unlock_irq(phba->host->host_lock);
1210
1211         /* LOGO completes to NPort <nlp_DID> */
1212         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1213                         "%d:0105 LOGO completes to NPort x%x "
1214                         "Data: x%x x%x x%x x%x\n",
1215                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1216                         irsp->un.ulpWord[4], irsp->ulpTimeout,
1217                         phba->num_disc_nodes);
1218
1219         /* Check to see if link went down during discovery */
1220         if (lpfc_els_chk_latt(phba))
1221                 goto out;
1222
1223         if (irsp->ulpStatus) {
1224                 /* Check for retry */
1225                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1226                         /* ELS command is being retried */
1227                         goto out;
1228                 }
1229                 /* LOGO failed */
1230                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1231                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1232                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
1233                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
1234                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
1235                         goto out;
1236                 } else {
1237                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1238                                         NLP_EVT_CMPL_LOGO);
1239                 }
1240         } else {
1241                 /* Good status, call state machine.
1242                  * This will unregister the rpi if needed.
1243                  */
1244                 lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
1245         }
1246
1247 out:
1248         lpfc_els_free_iocb(phba, cmdiocb);
1249         return;
1250 }
1251
1252 int
1253 lpfc_issue_els_logo(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
1254                     uint8_t retry)
1255 {
1256         IOCB_t *icmd;
1257         struct lpfc_iocbq *elsiocb;
1258         struct lpfc_sli_ring *pring;
1259         struct lpfc_sli *psli;
1260         uint8_t *pcmd;
1261         uint16_t cmdsize;
1262
1263         psli = &phba->sli;
1264         pring = &psli->ring[LPFC_ELS_RING];
1265
1266         cmdsize = 2 * (sizeof (uint32_t) + sizeof (struct lpfc_name));
1267         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1268                                                 ndlp->nlp_DID, ELS_CMD_LOGO);
1269         if (!elsiocb)
1270                 return 1;
1271
1272         icmd = &elsiocb->iocb;
1273         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1274         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
1275         pcmd += sizeof (uint32_t);
1276
1277         /* Fill in LOGO payload */
1278         *((uint32_t *) (pcmd)) = be32_to_cpu(phba->fc_myDID);
1279         pcmd += sizeof (uint32_t);
1280         memcpy(pcmd, &phba->fc_portname, sizeof (struct lpfc_name));
1281
1282         phba->fc_stat.elsXmitLOGO++;
1283         elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
1284         spin_lock_irq(phba->host->host_lock);
1285         ndlp->nlp_flag |= NLP_LOGO_SND;
1286         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1287                 ndlp->nlp_flag &= ~NLP_LOGO_SND;
1288                 spin_unlock_irq(phba->host->host_lock);
1289                 lpfc_els_free_iocb(phba, elsiocb);
1290                 return 1;
1291         }
1292         spin_unlock_irq(phba->host->host_lock);
1293         return 0;
1294 }
1295
1296 static void
1297 lpfc_cmpl_els_cmd(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1298                   struct lpfc_iocbq * rspiocb)
1299 {
1300         IOCB_t *irsp;
1301
1302         irsp = &rspiocb->iocb;
1303
1304         /* ELS cmd tag <ulpIoTag> completes */
1305         lpfc_printf_log(phba,
1306                         KERN_INFO,
1307                         LOG_ELS,
1308                         "%d:0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
1309                         phba->brd_no,
1310                         irsp->ulpIoTag, irsp->ulpStatus,
1311                         irsp->un.ulpWord[4], irsp->ulpTimeout);
1312
1313         /* Check to see if link went down during discovery */
1314         lpfc_els_chk_latt(phba);
1315         lpfc_els_free_iocb(phba, cmdiocb);
1316         return;
1317 }
1318
1319 int
1320 lpfc_issue_els_scr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
1321 {
1322         IOCB_t *icmd;
1323         struct lpfc_iocbq *elsiocb;
1324         struct lpfc_sli_ring *pring;
1325         struct lpfc_sli *psli;
1326         uint8_t *pcmd;
1327         uint16_t cmdsize;
1328         struct lpfc_nodelist *ndlp;
1329
1330         psli = &phba->sli;
1331         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1332         cmdsize = (sizeof (uint32_t) + sizeof (SCR));
1333         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1334         if (!ndlp)
1335                 return 1;
1336
1337         lpfc_nlp_init(phba, ndlp, nportid);
1338
1339         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1340                                                 ndlp->nlp_DID, ELS_CMD_SCR);
1341         if (!elsiocb) {
1342                 mempool_free( ndlp, phba->nlp_mem_pool);
1343                 return 1;
1344         }
1345
1346         icmd = &elsiocb->iocb;
1347         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1348
1349         *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
1350         pcmd += sizeof (uint32_t);
1351
1352         /* For SCR, remainder of payload is SCR parameter page */
1353         memset(pcmd, 0, sizeof (SCR));
1354         ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
1355
1356         phba->fc_stat.elsXmitSCR++;
1357         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
1358         spin_lock_irq(phba->host->host_lock);
1359         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1360                 spin_unlock_irq(phba->host->host_lock);
1361                 mempool_free( ndlp, phba->nlp_mem_pool);
1362                 lpfc_els_free_iocb(phba, elsiocb);
1363                 return 1;
1364         }
1365         spin_unlock_irq(phba->host->host_lock);
1366         mempool_free( ndlp, phba->nlp_mem_pool);
1367         return 0;
1368 }
1369
1370 static int
1371 lpfc_issue_els_farpr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
1372 {
1373         IOCB_t *icmd;
1374         struct lpfc_iocbq *elsiocb;
1375         struct lpfc_sli_ring *pring;
1376         struct lpfc_sli *psli;
1377         FARP *fp;
1378         uint8_t *pcmd;
1379         uint32_t *lp;
1380         uint16_t cmdsize;
1381         struct lpfc_nodelist *ondlp;
1382         struct lpfc_nodelist *ndlp;
1383
1384         psli = &phba->sli;
1385         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1386         cmdsize = (sizeof (uint32_t) + sizeof (FARP));
1387         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1388         if (!ndlp)
1389                 return 1;
1390         lpfc_nlp_init(phba, ndlp, nportid);
1391
1392         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1393                                                 ndlp->nlp_DID, ELS_CMD_RNID);
1394         if (!elsiocb) {
1395                 mempool_free( ndlp, phba->nlp_mem_pool);
1396                 return 1;
1397         }
1398
1399         icmd = &elsiocb->iocb;
1400         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1401
1402         *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
1403         pcmd += sizeof (uint32_t);
1404
1405         /* Fill in FARPR payload */
1406         fp = (FARP *) (pcmd);
1407         memset(fp, 0, sizeof (FARP));
1408         lp = (uint32_t *) pcmd;
1409         *lp++ = be32_to_cpu(nportid);
1410         *lp++ = be32_to_cpu(phba->fc_myDID);
1411         fp->Rflags = 0;
1412         fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
1413
1414         memcpy(&fp->RportName, &phba->fc_portname, sizeof (struct lpfc_name));
1415         memcpy(&fp->RnodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1416         if ((ondlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, nportid))) {
1417                 memcpy(&fp->OportName, &ondlp->nlp_portname,
1418                        sizeof (struct lpfc_name));
1419                 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
1420                        sizeof (struct lpfc_name));
1421         }
1422
1423         phba->fc_stat.elsXmitFARPR++;
1424         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
1425         spin_lock_irq(phba->host->host_lock);
1426         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1427                 spin_unlock_irq(phba->host->host_lock);
1428                 mempool_free( ndlp, phba->nlp_mem_pool);
1429                 lpfc_els_free_iocb(phba, elsiocb);
1430                 return 1;
1431         }
1432         spin_unlock_irq(phba->host->host_lock);
1433         mempool_free( ndlp, phba->nlp_mem_pool);
1434         return 0;
1435 }
1436
1437 void
1438 lpfc_els_retry_delay(unsigned long ptr)
1439 {
1440         struct lpfc_nodelist *ndlp;
1441         struct lpfc_hba *phba;
1442         unsigned long iflag;
1443         struct lpfc_work_evt  *evtp;
1444
1445         ndlp = (struct lpfc_nodelist *)ptr;
1446         phba = ndlp->nlp_phba;
1447         evtp = &ndlp->els_retry_evt;
1448
1449         spin_lock_irqsave(phba->host->host_lock, iflag);
1450         if (!list_empty(&evtp->evt_listp)) {
1451                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1452                 return;
1453         }
1454
1455         evtp->evt_arg1  = ndlp;
1456         evtp->evt       = LPFC_EVT_ELS_RETRY;
1457         list_add_tail(&evtp->evt_listp, &phba->work_list);
1458         if (phba->work_wait)
1459                 wake_up(phba->work_wait);
1460
1461         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1462         return;
1463 }
1464
1465 void
1466 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
1467 {
1468         struct lpfc_hba *phba;
1469         uint32_t cmd;
1470         uint32_t did;
1471         uint8_t retry;
1472
1473         phba = ndlp->nlp_phba;
1474         spin_lock_irq(phba->host->host_lock);
1475         did = ndlp->nlp_DID;
1476         cmd = ndlp->nlp_last_elscmd;
1477         ndlp->nlp_last_elscmd = 0;
1478
1479         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1480                 spin_unlock_irq(phba->host->host_lock);
1481                 return;
1482         }
1483
1484         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1485         spin_unlock_irq(phba->host->host_lock);
1486         retry = ndlp->nlp_retry;
1487
1488         switch (cmd) {
1489         case ELS_CMD_FLOGI:
1490                 lpfc_issue_els_flogi(phba, ndlp, retry);
1491                 break;
1492         case ELS_CMD_PLOGI:
1493                 if(!lpfc_issue_els_plogi(phba, ndlp->nlp_DID, retry)) {
1494                         ndlp->nlp_prev_state = ndlp->nlp_state;
1495                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1496                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1497                 }
1498                 break;
1499         case ELS_CMD_ADISC:
1500                 if (!lpfc_issue_els_adisc(phba, ndlp, retry)) {
1501                         ndlp->nlp_prev_state = ndlp->nlp_state;
1502                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1503                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1504                 }
1505                 break;
1506         case ELS_CMD_PRLI:
1507                 if (!lpfc_issue_els_prli(phba, ndlp, retry)) {
1508                         ndlp->nlp_prev_state = ndlp->nlp_state;
1509                         ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1510                         lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1511                 }
1512                 break;
1513         case ELS_CMD_LOGO:
1514                 if (!lpfc_issue_els_logo(phba, ndlp, retry)) {
1515                         ndlp->nlp_prev_state = ndlp->nlp_state;
1516                         ndlp->nlp_state = NLP_STE_NPR_NODE;
1517                         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1518                 }
1519                 break;
1520         }
1521         return;
1522 }
1523
1524 static int
1525 lpfc_els_retry(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1526                struct lpfc_iocbq * rspiocb)
1527 {
1528         IOCB_t *irsp;
1529         struct lpfc_dmabuf *pcmd;
1530         struct lpfc_nodelist *ndlp;
1531         uint32_t *elscmd;
1532         struct ls_rjt stat;
1533         int retry, maxretry;
1534         int delay;
1535         uint32_t cmd;
1536         uint32_t did;
1537
1538         retry = 0;
1539         delay = 0;
1540         maxretry = lpfc_max_els_tries;
1541         irsp = &rspiocb->iocb;
1542         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1543         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1544         cmd = 0;
1545
1546         /* Note: context2 may be 0 for internal driver abort
1547          * of delays ELS command.
1548          */
1549
1550         if (pcmd && pcmd->virt) {
1551                 elscmd = (uint32_t *) (pcmd->virt);
1552                 cmd = *elscmd++;
1553         }
1554
1555         if(ndlp)
1556                 did = ndlp->nlp_DID;
1557         else {
1558                 /* We should only hit this case for retrying PLOGI */
1559                 did = irsp->un.elsreq64.remoteID;
1560                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
1561                 if (!ndlp && (cmd != ELS_CMD_PLOGI))
1562                         return 1;
1563         }
1564
1565         switch (irsp->ulpStatus) {
1566         case IOSTAT_FCP_RSP_ERROR:
1567         case IOSTAT_REMOTE_STOP:
1568                 break;
1569
1570         case IOSTAT_LOCAL_REJECT:
1571                 switch ((irsp->un.ulpWord[4] & 0xff)) {
1572                 case IOERR_LOOP_OPEN_FAILURE:
1573                         if (cmd == ELS_CMD_PLOGI) {
1574                                 if (cmdiocb->retry == 0) {
1575                                         delay = 1;
1576                                 }
1577                         }
1578                         retry = 1;
1579                         break;
1580
1581                 case IOERR_SEQUENCE_TIMEOUT:
1582                         retry = 1;
1583                         break;
1584
1585                 case IOERR_NO_RESOURCES:
1586                         if (cmd == ELS_CMD_PLOGI) {
1587                                 delay = 1;
1588                         }
1589                         retry = 1;
1590                         break;
1591
1592                 case IOERR_INVALID_RPI:
1593                         retry = 1;
1594                         break;
1595                 }
1596                 break;
1597
1598         case IOSTAT_NPORT_RJT:
1599         case IOSTAT_FABRIC_RJT:
1600                 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
1601                         retry = 1;
1602                         break;
1603                 }
1604                 break;
1605
1606         case IOSTAT_NPORT_BSY:
1607         case IOSTAT_FABRIC_BSY:
1608                 retry = 1;
1609                 break;
1610
1611         case IOSTAT_LS_RJT:
1612                 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
1613                 /* Added for Vendor specifc support
1614                  * Just keep retrying for these Rsn / Exp codes
1615                  */
1616                 switch (stat.un.b.lsRjtRsnCode) {
1617                 case LSRJT_UNABLE_TPC:
1618                         if (stat.un.b.lsRjtRsnCodeExp ==
1619                             LSEXP_CMD_IN_PROGRESS) {
1620                                 if (cmd == ELS_CMD_PLOGI) {
1621                                         delay = 1;
1622                                         maxretry = 48;
1623                                 }
1624                                 retry = 1;
1625                                 break;
1626                         }
1627                         if (cmd == ELS_CMD_PLOGI) {
1628                                 delay = 1;
1629                                 maxretry = lpfc_max_els_tries + 1;
1630                                 retry = 1;
1631                                 break;
1632                         }
1633                         break;
1634
1635                 case LSRJT_LOGICAL_BSY:
1636                         if (cmd == ELS_CMD_PLOGI) {
1637                                 delay = 1;
1638                                 maxretry = 48;
1639                         }
1640                         retry = 1;
1641                         break;
1642                 }
1643                 break;
1644
1645         case IOSTAT_INTERMED_RSP:
1646         case IOSTAT_BA_RJT:
1647                 break;
1648
1649         default:
1650                 break;
1651         }
1652
1653         if (did == FDMI_DID)
1654                 retry = 1;
1655
1656         if ((++cmdiocb->retry) >= maxretry) {
1657                 phba->fc_stat.elsRetryExceeded++;
1658                 retry = 0;
1659         }
1660
1661         if (retry) {
1662
1663                 /* Retry ELS command <elsCmd> to remote NPORT <did> */
1664                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1665                                 "%d:0107 Retry ELS command x%x to remote "
1666                                 "NPORT x%x Data: x%x x%x\n",
1667                                 phba->brd_no,
1668                                 cmd, did, cmdiocb->retry, delay);
1669
1670                 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) {
1671                         /* If discovery / RSCN timer is running, reset it */
1672                         if (timer_pending(&phba->fc_disctmo) ||
1673                               (phba->fc_flag & FC_RSCN_MODE)) {
1674                                 lpfc_set_disctmo(phba);
1675                         }
1676                 }
1677
1678                 phba->fc_stat.elsXmitRetry++;
1679                 if (ndlp && delay) {
1680                         phba->fc_stat.elsDelayRetry++;
1681                         ndlp->nlp_retry = cmdiocb->retry;
1682
1683                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1684                         ndlp->nlp_flag |= NLP_DELAY_TMO;
1685
1686                         ndlp->nlp_prev_state = ndlp->nlp_state;
1687                         ndlp->nlp_state = NLP_STE_NPR_NODE;
1688                         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1689                         ndlp->nlp_last_elscmd = cmd;
1690
1691                         return 1;
1692                 }
1693                 switch (cmd) {
1694                 case ELS_CMD_FLOGI:
1695                         lpfc_issue_els_flogi(phba, ndlp, cmdiocb->retry);
1696                         return 1;
1697                 case ELS_CMD_PLOGI:
1698                         if (ndlp) {
1699                                 ndlp->nlp_prev_state = ndlp->nlp_state;
1700                                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1701                                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1702                         }
1703                         lpfc_issue_els_plogi(phba, did, cmdiocb->retry);
1704                         return 1;
1705                 case ELS_CMD_ADISC:
1706                         ndlp->nlp_prev_state = ndlp->nlp_state;
1707                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1708                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1709                         lpfc_issue_els_adisc(phba, ndlp, cmdiocb->retry);
1710                         return 1;
1711                 case ELS_CMD_PRLI:
1712                         ndlp->nlp_prev_state = ndlp->nlp_state;
1713                         ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1714                         lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1715                         lpfc_issue_els_prli(phba, ndlp, cmdiocb->retry);
1716                         return 1;
1717                 case ELS_CMD_LOGO:
1718                         ndlp->nlp_prev_state = ndlp->nlp_state;
1719                         ndlp->nlp_state = NLP_STE_NPR_NODE;
1720                         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1721                         lpfc_issue_els_logo(phba, ndlp, cmdiocb->retry);
1722                         return 1;
1723                 }
1724         }
1725
1726         /* No retry ELS command <elsCmd> to remote NPORT <did> */
1727         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1728                         "%d:0108 No retry ELS command x%x to remote NPORT x%x "
1729                         "Data: x%x\n",
1730                         phba->brd_no,
1731                         cmd, did, cmdiocb->retry);
1732
1733         return 0;
1734 }
1735
1736 int
1737 lpfc_els_free_iocb(struct lpfc_hba * phba, struct lpfc_iocbq * elsiocb)
1738 {
1739         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
1740
1741         /* context2  = cmd,  context2->next = rsp, context3 = bpl */
1742         if (elsiocb->context2) {
1743                 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
1744                 /* Free the response before processing the command.  */
1745                 if (!list_empty(&buf_ptr1->list)) {
1746                         list_remove_head(&buf_ptr1->list, buf_ptr,
1747                                          struct lpfc_dmabuf,
1748                                          list);
1749                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1750                         kfree(buf_ptr);
1751                 }
1752                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
1753                 kfree(buf_ptr1);
1754         }
1755
1756         if (elsiocb->context3) {
1757                 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
1758                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1759                 kfree(buf_ptr);
1760         }
1761         spin_lock_irq(phba->host->host_lock);
1762         lpfc_sli_release_iocbq(phba, elsiocb);
1763         spin_unlock_irq(phba->host->host_lock);
1764         return 0;
1765 }
1766
1767 static void
1768 lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1769                        struct lpfc_iocbq * rspiocb)
1770 {
1771         struct lpfc_nodelist *ndlp;
1772
1773         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1774
1775         /* ACC to LOGO completes to NPort <nlp_DID> */
1776         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1777                         "%d:0109 ACC to LOGO completes to NPort x%x "
1778                         "Data: x%x x%x x%x\n",
1779                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
1780                         ndlp->nlp_state, ndlp->nlp_rpi);
1781
1782         switch (ndlp->nlp_state) {
1783         case NLP_STE_UNUSED_NODE:       /* node is just allocated */
1784                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1785                 break;
1786         case NLP_STE_NPR_NODE:          /* NPort Recovery mode */
1787                 lpfc_unreg_rpi(phba, ndlp);
1788                 break;
1789         default:
1790                 break;
1791         }
1792         lpfc_els_free_iocb(phba, cmdiocb);
1793         return;
1794 }
1795
1796 static void
1797 lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1798                   struct lpfc_iocbq * rspiocb)
1799 {
1800         struct lpfc_nodelist *ndlp;
1801         LPFC_MBOXQ_t *mbox = NULL;
1802
1803         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1804         if (cmdiocb->context_un.mbox)
1805                 mbox = cmdiocb->context_un.mbox;
1806
1807
1808         /* Check to see if link went down during discovery */
1809         if ((lpfc_els_chk_latt(phba)) || !ndlp) {
1810                 if (mbox) {
1811                         mempool_free( mbox, phba->mbox_mem_pool);
1812                 }
1813                 goto out;
1814         }
1815
1816         /* ELS response tag <ulpIoTag> completes */
1817         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1818                         "%d:0110 ELS response tag x%x completes "
1819                         "Data: x%x x%x x%x x%x x%x x%x x%x\n",
1820                         phba->brd_no,
1821                         cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
1822                         rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
1823                         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
1824                         ndlp->nlp_rpi);
1825
1826         if (mbox) {
1827                 if ((rspiocb->iocb.ulpStatus == 0)
1828                     && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
1829                         /* set_slim mailbox command needs to execute first,
1830                          * queue this command to be processed later.
1831                          */
1832                         lpfc_unreg_rpi(phba, ndlp);
1833                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1834                         mbox->context2 = ndlp;
1835                         ndlp->nlp_prev_state = ndlp->nlp_state;
1836                         ndlp->nlp_state = NLP_STE_REG_LOGIN_ISSUE;
1837                         lpfc_nlp_list(phba, ndlp, NLP_REGLOGIN_LIST);
1838                         if (lpfc_sli_issue_mbox(phba, mbox,
1839                                                 (MBX_NOWAIT | MBX_STOP_IOCB))
1840                             != MBX_NOT_FINISHED) {
1841                                 goto out;
1842                         }
1843                         /* NOTE: we should have messages for unsuccessful
1844                            reglogin */
1845                         mempool_free( mbox, phba->mbox_mem_pool);
1846                 } else {
1847                         mempool_free( mbox, phba->mbox_mem_pool);
1848                         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1849                                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1850                                 ndlp = NULL;
1851                         }
1852                 }
1853         }
1854 out:
1855         if (ndlp) {
1856                 spin_lock_irq(phba->host->host_lock);
1857                 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
1858                 spin_unlock_irq(phba->host->host_lock);
1859         }
1860         lpfc_els_free_iocb(phba, cmdiocb);
1861         return;
1862 }
1863
1864 int
1865 lpfc_els_rsp_acc(struct lpfc_hba * phba, uint32_t flag,
1866                  struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp,
1867                  LPFC_MBOXQ_t * mbox, uint8_t newnode)
1868 {
1869         IOCB_t *icmd;
1870         IOCB_t *oldcmd;
1871         struct lpfc_iocbq *elsiocb;
1872         struct lpfc_sli_ring *pring;
1873         struct lpfc_sli *psli;
1874         uint8_t *pcmd;
1875         uint16_t cmdsize;
1876         int rc;
1877
1878         psli = &phba->sli;
1879         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1880         oldcmd = &oldiocb->iocb;
1881
1882         switch (flag) {
1883         case ELS_CMD_ACC:
1884                 cmdsize = sizeof (uint32_t);
1885                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1886                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
1887                 if (!elsiocb) {
1888                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
1889                         return 1;
1890                 }
1891                 icmd = &elsiocb->iocb;
1892                 icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1893                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1894                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
1895                 pcmd += sizeof (uint32_t);
1896                 break;
1897         case ELS_CMD_PLOGI:
1898                 cmdsize = (sizeof (struct serv_parm) + sizeof (uint32_t));
1899                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1900                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
1901                 if (!elsiocb)
1902                         return 1;
1903
1904                 icmd = &elsiocb->iocb;
1905                 icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1906                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1907
1908                 if (mbox)
1909                         elsiocb->context_un.mbox = mbox;
1910
1911                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
1912                 pcmd += sizeof (uint32_t);
1913                 memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
1914                 break;
1915         default:
1916                 return 1;
1917         }
1918
1919         if (newnode)
1920                 elsiocb->context1 = NULL;
1921
1922         /* Xmit ELS ACC response tag <ulpIoTag> */
1923         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1924                         "%d:0128 Xmit ELS ACC response tag x%x "
1925                         "Data: x%x x%x x%x x%x x%x\n",
1926                         phba->brd_no,
1927                         elsiocb->iocb.ulpIoTag,
1928                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
1929                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
1930
1931         if (ndlp->nlp_flag & NLP_LOGO_ACC) {
1932                 spin_lock_irq(phba->host->host_lock);
1933                 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
1934                 spin_unlock_irq(phba->host->host_lock);
1935                 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
1936         } else {
1937                 elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
1938         }
1939
1940         phba->fc_stat.elsXmitACC++;
1941         spin_lock_irq(phba->host->host_lock);
1942         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
1943         spin_unlock_irq(phba->host->host_lock);
1944         if (rc == IOCB_ERROR) {
1945                 lpfc_els_free_iocb(phba, elsiocb);
1946                 return 1;
1947         }
1948         return 0;
1949 }
1950
1951 int
1952 lpfc_els_rsp_reject(struct lpfc_hba * phba, uint32_t rejectError,
1953                     struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
1954 {
1955         IOCB_t *icmd;
1956         IOCB_t *oldcmd;
1957         struct lpfc_iocbq *elsiocb;
1958         struct lpfc_sli_ring *pring;
1959         struct lpfc_sli *psli;
1960         uint8_t *pcmd;
1961         uint16_t cmdsize;
1962         int rc;
1963
1964         psli = &phba->sli;
1965         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1966
1967         cmdsize = 2 * sizeof (uint32_t);
1968         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1969                                         ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
1970         if (!elsiocb)
1971                 return 1;
1972
1973         icmd = &elsiocb->iocb;
1974         oldcmd = &oldiocb->iocb;
1975         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1976         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1977
1978         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
1979         pcmd += sizeof (uint32_t);
1980         *((uint32_t *) (pcmd)) = rejectError;
1981
1982         /* Xmit ELS RJT <err> response tag <ulpIoTag> */
1983         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1984                         "%d:0129 Xmit ELS RJT x%x response tag x%x "
1985                         "Data: x%x x%x x%x x%x x%x\n",
1986                         phba->brd_no,
1987                         rejectError, elsiocb->iocb.ulpIoTag,
1988                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
1989                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
1990
1991         phba->fc_stat.elsXmitLSRJT++;
1992         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
1993         spin_lock_irq(phba->host->host_lock);
1994         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
1995         spin_unlock_irq(phba->host->host_lock);
1996         if (rc == IOCB_ERROR) {
1997                 lpfc_els_free_iocb(phba, elsiocb);
1998                 return 1;
1999         }
2000         return 0;
2001 }
2002
2003 int
2004 lpfc_els_rsp_adisc_acc(struct lpfc_hba * phba,
2005                        struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2006 {
2007         ADISC *ap;
2008         IOCB_t *icmd;
2009         IOCB_t *oldcmd;
2010         struct lpfc_iocbq *elsiocb;
2011         struct lpfc_sli_ring *pring;
2012         struct lpfc_sli *psli;
2013         uint8_t *pcmd;
2014         uint16_t cmdsize;
2015         int rc;
2016
2017         psli = &phba->sli;
2018         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2019
2020         cmdsize = sizeof (uint32_t) + sizeof (ADISC);
2021         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2022                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2023         if (!elsiocb)
2024                 return 1;
2025
2026         /* Xmit ADISC ACC response tag <ulpIoTag> */
2027         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2028                         "%d:0130 Xmit ADISC ACC response tag x%x "
2029                         "Data: x%x x%x x%x x%x x%x\n",
2030                         phba->brd_no,
2031                         elsiocb->iocb.ulpIoTag,
2032                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2033                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2034
2035         icmd = &elsiocb->iocb;
2036         oldcmd = &oldiocb->iocb;
2037         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2038         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2039
2040         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2041         pcmd += sizeof (uint32_t);
2042
2043         ap = (ADISC *) (pcmd);
2044         ap->hardAL_PA = phba->fc_pref_ALPA;
2045         memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
2046         memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
2047         ap->DID = be32_to_cpu(phba->fc_myDID);
2048
2049         phba->fc_stat.elsXmitACC++;
2050         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2051         spin_lock_irq(phba->host->host_lock);
2052         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2053         spin_unlock_irq(phba->host->host_lock);
2054         if (rc == IOCB_ERROR) {
2055                 lpfc_els_free_iocb(phba, elsiocb);
2056                 return 1;
2057         }
2058         return 0;
2059 }
2060
2061 int
2062 lpfc_els_rsp_prli_acc(struct lpfc_hba * phba,
2063                       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2064 {
2065         PRLI *npr;
2066         lpfc_vpd_t *vpd;
2067         IOCB_t *icmd;
2068         IOCB_t *oldcmd;
2069         struct lpfc_iocbq *elsiocb;
2070         struct lpfc_sli_ring *pring;
2071         struct lpfc_sli *psli;
2072         uint8_t *pcmd;
2073         uint16_t cmdsize;
2074         int rc;
2075
2076         psli = &phba->sli;
2077         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2078
2079         cmdsize = sizeof (uint32_t) + sizeof (PRLI);
2080         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, ndlp,
2081                 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
2082         if (!elsiocb)
2083                 return 1;
2084
2085         /* Xmit PRLI ACC response tag <ulpIoTag> */
2086         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2087                         "%d:0131 Xmit PRLI ACC response tag x%x "
2088                         "Data: x%x x%x x%x x%x x%x\n",
2089                         phba->brd_no,
2090                         elsiocb->iocb.ulpIoTag,
2091                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2092                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2093
2094         icmd = &elsiocb->iocb;
2095         oldcmd = &oldiocb->iocb;
2096         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2097         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2098
2099         *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
2100         pcmd += sizeof (uint32_t);
2101
2102         /* For PRLI, remainder of payload is PRLI parameter page */
2103         memset(pcmd, 0, sizeof (PRLI));
2104
2105         npr = (PRLI *) pcmd;
2106         vpd = &phba->vpd;
2107         /*
2108          * If our firmware version is 3.20 or later,
2109          * set the following bits for FC-TAPE support.
2110          */
2111         if (vpd->rev.feaLevelHigh >= 0x02) {
2112                 npr->ConfmComplAllowed = 1;
2113                 npr->Retry = 1;
2114                 npr->TaskRetryIdReq = 1;
2115         }
2116
2117         npr->acceptRspCode = PRLI_REQ_EXECUTED;
2118         npr->estabImagePair = 1;
2119         npr->readXferRdyDis = 1;
2120         npr->ConfmComplAllowed = 1;
2121
2122         npr->prliType = PRLI_FCP_TYPE;
2123         npr->initiatorFunc = 1;
2124
2125         phba->fc_stat.elsXmitACC++;
2126         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2127
2128         spin_lock_irq(phba->host->host_lock);
2129         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2130         spin_unlock_irq(phba->host->host_lock);
2131         if (rc == IOCB_ERROR) {
2132                 lpfc_els_free_iocb(phba, elsiocb);
2133                 return 1;
2134         }
2135         return 0;
2136 }
2137
2138 static int
2139 lpfc_els_rsp_rnid_acc(struct lpfc_hba * phba,
2140                       uint8_t format,
2141                       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2142 {
2143         RNID *rn;
2144         IOCB_t *icmd;
2145         IOCB_t *oldcmd;
2146         struct lpfc_iocbq *elsiocb;
2147         struct lpfc_sli_ring *pring;
2148         struct lpfc_sli *psli;
2149         uint8_t *pcmd;
2150         uint16_t cmdsize;
2151         int rc;
2152
2153         psli = &phba->sli;
2154         pring = &psli->ring[LPFC_ELS_RING];
2155
2156         cmdsize = sizeof (uint32_t) + sizeof (uint32_t)
2157                 + (2 * sizeof (struct lpfc_name));
2158         if (format)
2159                 cmdsize += sizeof (RNID_TOP_DISC);
2160
2161         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2162                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2163         if (!elsiocb)
2164                 return 1;
2165
2166         /* Xmit RNID ACC response tag <ulpIoTag> */
2167         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2168                         "%d:0132 Xmit RNID ACC response tag x%x "
2169                         "Data: x%x\n",
2170                         phba->brd_no,
2171                         elsiocb->iocb.ulpIoTag,
2172                         elsiocb->iocb.ulpContext);
2173
2174         icmd = &elsiocb->iocb;
2175         oldcmd = &oldiocb->iocb;
2176         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2177         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2178
2179         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2180         pcmd += sizeof (uint32_t);
2181
2182         memset(pcmd, 0, sizeof (RNID));
2183         rn = (RNID *) (pcmd);
2184         rn->Format = format;
2185         rn->CommonLen = (2 * sizeof (struct lpfc_name));
2186         memcpy(&rn->portName, &phba->fc_portname, sizeof (struct lpfc_name));
2187         memcpy(&rn->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
2188         switch (format) {
2189         case 0:
2190                 rn->SpecificLen = 0;
2191                 break;
2192         case RNID_TOPOLOGY_DISC:
2193                 rn->SpecificLen = sizeof (RNID_TOP_DISC);
2194                 memcpy(&rn->un.topologyDisc.portName,
2195                        &phba->fc_portname, sizeof (struct lpfc_name));
2196                 rn->un.topologyDisc.unitType = RNID_HBA;
2197                 rn->un.topologyDisc.physPort = 0;
2198                 rn->un.topologyDisc.attachedNodes = 0;
2199                 break;
2200         default:
2201                 rn->CommonLen = 0;
2202                 rn->SpecificLen = 0;
2203                 break;
2204         }
2205
2206         phba->fc_stat.elsXmitACC++;
2207         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2208         elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
2209                                     * it could be freed */
2210
2211         spin_lock_irq(phba->host->host_lock);
2212         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2213         spin_unlock_irq(phba->host->host_lock);
2214         if (rc == IOCB_ERROR) {
2215                 lpfc_els_free_iocb(phba, elsiocb);
2216                 return 1;
2217         }
2218         return 0;
2219 }
2220
2221 int
2222 lpfc_els_disc_adisc(struct lpfc_hba * phba)
2223 {
2224         int sentadisc;
2225         struct lpfc_nodelist *ndlp, *next_ndlp;
2226
2227         sentadisc = 0;
2228         /* go thru NPR list and issue any remaining ELS ADISCs */
2229         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2230                         nlp_listp) {
2231                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2232                         if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2233                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2234                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2235                                 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
2236                                 lpfc_nlp_list(phba, ndlp,
2237                                         NLP_ADISC_LIST);
2238                                 lpfc_issue_els_adisc(phba, ndlp, 0);
2239                                 sentadisc++;
2240                                 phba->num_disc_nodes++;
2241                                 if (phba->num_disc_nodes >=
2242                                     phba->cfg_discovery_threads) {
2243                                         spin_lock_irq(phba->host->host_lock);
2244                                         phba->fc_flag |= FC_NLP_MORE;
2245                                         spin_unlock_irq(phba->host->host_lock);
2246                                         break;
2247                                 }
2248                         }
2249                 }
2250         }
2251         if (sentadisc == 0) {
2252                 spin_lock_irq(phba->host->host_lock);
2253                 phba->fc_flag &= ~FC_NLP_MORE;
2254                 spin_unlock_irq(phba->host->host_lock);
2255         }
2256         return sentadisc;
2257 }
2258
2259 int
2260 lpfc_els_disc_plogi(struct lpfc_hba * phba)
2261 {
2262         int sentplogi;
2263         struct lpfc_nodelist *ndlp, *next_ndlp;
2264
2265         sentplogi = 0;
2266         /* go thru NPR list and issue any remaining ELS PLOGIs */
2267         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2268                                 nlp_listp) {
2269                 if ((ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
2270                    (!(ndlp->nlp_flag & NLP_DELAY_TMO))) {
2271                         if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2272                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2273                                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
2274                                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
2275                                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
2276                                 sentplogi++;
2277                                 phba->num_disc_nodes++;
2278                                 if (phba->num_disc_nodes >=
2279                                     phba->cfg_discovery_threads) {
2280                                         spin_lock_irq(phba->host->host_lock);
2281                                         phba->fc_flag |= FC_NLP_MORE;
2282                                         spin_unlock_irq(phba->host->host_lock);
2283                                         break;
2284                                 }
2285                         }
2286                 }
2287         }
2288         if (sentplogi == 0) {
2289                 spin_lock_irq(phba->host->host_lock);
2290                 phba->fc_flag &= ~FC_NLP_MORE;
2291                 spin_unlock_irq(phba->host->host_lock);
2292         }
2293         return sentplogi;
2294 }
2295
2296 int
2297 lpfc_els_flush_rscn(struct lpfc_hba * phba)
2298 {
2299         struct lpfc_dmabuf *mp;
2300         int i;
2301
2302         for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
2303                 mp = phba->fc_rscn_id_list[i];
2304                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2305                 kfree(mp);
2306                 phba->fc_rscn_id_list[i] = NULL;
2307         }
2308         phba->fc_rscn_id_cnt = 0;
2309         spin_lock_irq(phba->host->host_lock);
2310         phba->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
2311         spin_unlock_irq(phba->host->host_lock);
2312         lpfc_can_disctmo(phba);
2313         return 0;
2314 }
2315
2316 int
2317 lpfc_rscn_payload_check(struct lpfc_hba * phba, uint32_t did)
2318 {
2319         D_ID ns_did;
2320         D_ID rscn_did;
2321         struct lpfc_dmabuf *mp;
2322         uint32_t *lp;
2323         uint32_t payload_len, cmd, i, match;
2324
2325         ns_did.un.word = did;
2326         match = 0;
2327
2328         /* Never match fabric nodes for RSCNs */
2329         if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
2330                 return(0);
2331
2332         /* If we are doing a FULL RSCN rediscovery, match everything */
2333         if (phba->fc_flag & FC_RSCN_DISCOVERY) {
2334                 return did;
2335         }
2336
2337         for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
2338                 mp = phba->fc_rscn_id_list[i];
2339                 lp = (uint32_t *) mp->virt;
2340                 cmd = *lp++;
2341                 payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */
2342                 payload_len -= sizeof (uint32_t);       /* take off word 0 */
2343                 while (payload_len) {
2344                         rscn_did.un.word = *lp++;
2345                         rscn_did.un.word = be32_to_cpu(rscn_did.un.word);
2346                         payload_len -= sizeof (uint32_t);
2347                         switch (rscn_did.un.b.resv) {
2348                         case 0: /* Single N_Port ID effected */
2349                                 if (ns_did.un.word == rscn_did.un.word) {
2350                                         match = did;
2351                                 }
2352                                 break;
2353                         case 1: /* Whole N_Port Area effected */
2354                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
2355                                     && (ns_did.un.b.area == rscn_did.un.b.area))
2356                                         {
2357                                                 match = did;
2358                                         }
2359                                 break;
2360                         case 2: /* Whole N_Port Domain effected */
2361                                 if (ns_did.un.b.domain == rscn_did.un.b.domain)
2362                                         {
2363                                                 match = did;
2364                                         }
2365                                 break;
2366                         case 3: /* Whole Fabric effected */
2367                                 match = did;
2368                                 break;
2369                         default:
2370                                 /* Unknown Identifier in RSCN list */
2371                                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2372                                                 "%d:0217 Unknown Identifier in "
2373                                                 "RSCN payload Data: x%x\n",
2374                                                 phba->brd_no, rscn_did.un.word);
2375                                 break;
2376                         }
2377                         if (match) {
2378                                 break;
2379                         }
2380                 }
2381         }
2382         return match;
2383 }
2384
2385 static int
2386 lpfc_rscn_recovery_check(struct lpfc_hba * phba)
2387 {
2388         struct lpfc_nodelist *ndlp = NULL, *next_ndlp;
2389         struct list_head *listp;
2390         struct list_head *node_list[7];
2391         int i;
2392
2393         /* Look at all nodes effected by pending RSCNs and move
2394          * them to NPR list.
2395          */
2396         node_list[0] = &phba->fc_npr_list;  /* MUST do this list first */
2397         node_list[1] = &phba->fc_nlpmap_list;
2398         node_list[2] = &phba->fc_nlpunmap_list;
2399         node_list[3] = &phba->fc_prli_list;
2400         node_list[4] = &phba->fc_reglogin_list;
2401         node_list[5] = &phba->fc_adisc_list;
2402         node_list[6] = &phba->fc_plogi_list;
2403         for (i = 0; i < 7; i++) {
2404                 listp = node_list[i];
2405                 if (list_empty(listp))
2406                         continue;
2407
2408                 list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
2409                         if (!(lpfc_rscn_payload_check(phba, ndlp->nlp_DID)))
2410                                 continue;
2411
2412                         lpfc_disc_state_machine(phba, ndlp, NULL,
2413                                         NLP_EVT_DEVICE_RECOVERY);
2414
2415                         /* Make sure NLP_DELAY_TMO is NOT running
2416                          * after a device recovery event.
2417                          */
2418                         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2419                                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2420                                 ndlp->nlp_last_elscmd = 0;
2421                                 del_timer_sync(&ndlp->nlp_delayfunc);
2422                                 if (!list_empty(&ndlp->
2423                                                 els_retry_evt.evt_listp))
2424                                         list_del_init(&ndlp->
2425                                                 els_retry_evt.evt_listp);
2426                         }
2427                 }
2428         }
2429         return 0;
2430 }
2431
2432 static int
2433 lpfc_els_rcv_rscn(struct lpfc_hba * phba,
2434                   struct lpfc_iocbq * cmdiocb,
2435                   struct lpfc_nodelist * ndlp, uint8_t newnode)
2436 {
2437         struct lpfc_dmabuf *pcmd;
2438         uint32_t *lp;
2439         IOCB_t *icmd;
2440         uint32_t payload_len, cmd;
2441
2442         icmd = &cmdiocb->iocb;
2443         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2444         lp = (uint32_t *) pcmd->virt;
2445
2446         cmd = *lp++;
2447         payload_len = be32_to_cpu(cmd) & 0xffff;        /* payload length */
2448         payload_len -= sizeof (uint32_t);       /* take off word 0 */
2449         cmd &= ELS_CMD_MASK;
2450
2451         /* RSCN received */
2452         lpfc_printf_log(phba,
2453                         KERN_INFO,
2454                         LOG_DISCOVERY,
2455                         "%d:0214 RSCN received Data: x%x x%x x%x x%x\n",
2456                         phba->brd_no,
2457                         phba->fc_flag, payload_len, *lp, phba->fc_rscn_id_cnt);
2458
2459         /* If we are about to begin discovery, just ACC the RSCN.
2460          * Discovery processing will satisfy it.
2461          */
2462         if (phba->hba_state < LPFC_NS_QRY) {
2463                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
2464                                                                 newnode);
2465                 return 0;
2466         }
2467
2468         /* If we are already processing an RSCN, save the received
2469          * RSCN payload buffer, cmdiocb->context2 to process later.
2470          */
2471         if (phba->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
2472                 if ((phba->fc_rscn_id_cnt < FC_MAX_HOLD_RSCN) &&
2473                     !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
2474                         spin_lock_irq(phba->host->host_lock);
2475                         phba->fc_flag |= FC_RSCN_MODE;
2476                         spin_unlock_irq(phba->host->host_lock);
2477                         phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
2478
2479                         /* If we zero, cmdiocb->context2, the calling
2480                          * routine will not try to free it.
2481                          */
2482                         cmdiocb->context2 = NULL;
2483
2484                         /* Deferred RSCN */
2485                         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2486                                         "%d:0235 Deferred RSCN "
2487                                         "Data: x%x x%x x%x\n",
2488                                         phba->brd_no, phba->fc_rscn_id_cnt,
2489                                         phba->fc_flag, phba->hba_state);
2490                 } else {
2491                         spin_lock_irq(phba->host->host_lock);
2492                         phba->fc_flag |= FC_RSCN_DISCOVERY;
2493                         spin_unlock_irq(phba->host->host_lock);
2494                         /* ReDiscovery RSCN */
2495                         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2496                                         "%d:0234 ReDiscovery RSCN "
2497                                         "Data: x%x x%x x%x\n",
2498                                         phba->brd_no, phba->fc_rscn_id_cnt,
2499                                         phba->fc_flag, phba->hba_state);
2500                 }
2501                 /* Send back ACC */
2502                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
2503                                                                 newnode);
2504
2505                 /* send RECOVERY event for ALL nodes that match RSCN payload */
2506                 lpfc_rscn_recovery_check(phba);
2507                 return 0;
2508         }
2509
2510         phba->fc_flag |= FC_RSCN_MODE;
2511         phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
2512         /*
2513          * If we zero, cmdiocb->context2, the calling routine will
2514          * not try to free it.
2515          */
2516         cmdiocb->context2 = NULL;
2517
2518         lpfc_set_disctmo(phba);
2519
2520         /* Send back ACC */
2521         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, newnode);
2522
2523         /* send RECOVERY event for ALL nodes that match RSCN payload */
2524         lpfc_rscn_recovery_check(phba);
2525
2526         return lpfc_els_handle_rscn(phba);
2527 }
2528
2529 int
2530 lpfc_els_handle_rscn(struct lpfc_hba * phba)
2531 {
2532         struct lpfc_nodelist *ndlp;
2533
2534         /* Start timer for RSCN processing */
2535         lpfc_set_disctmo(phba);
2536
2537         /* RSCN processed */
2538         lpfc_printf_log(phba,
2539                         KERN_INFO,
2540                         LOG_DISCOVERY,
2541                         "%d:0215 RSCN processed Data: x%x x%x x%x x%x\n",
2542                         phba->brd_no,
2543                         phba->fc_flag, 0, phba->fc_rscn_id_cnt,
2544                         phba->hba_state);
2545
2546         /* To process RSCN, first compare RSCN data with NameServer */
2547         phba->fc_ns_retry = 0;
2548         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED, NameServer_DID);
2549         if (ndlp) {
2550                 /* Good ndlp, issue CT Request to NameServer */
2551                 if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT) == 0) {
2552                         /* Wait for NameServer query cmpl before we can
2553                            continue */
2554                         return 1;
2555                 }
2556         } else {
2557                 /* If login to NameServer does not exist, issue one */
2558                 /* Good status, issue PLOGI to NameServer */
2559                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
2560                 if (ndlp) {
2561                         /* Wait for NameServer login cmpl before we can
2562                            continue */
2563                         return 1;
2564                 }
2565                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2566                 if (!ndlp) {
2567                         lpfc_els_flush_rscn(phba);
2568                         return 0;
2569                 } else {
2570                         lpfc_nlp_init(phba, ndlp, NameServer_DID);
2571                         ndlp->nlp_type |= NLP_FABRIC;
2572                         ndlp->nlp_prev_state = ndlp->nlp_state;
2573                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
2574                         lpfc_issue_els_plogi(phba, NameServer_DID, 0);
2575                         /* Wait for NameServer login cmpl before we can
2576                            continue */
2577                         return 1;
2578                 }
2579         }
2580
2581         lpfc_els_flush_rscn(phba);
2582         return 0;
2583 }
2584
2585 static int
2586 lpfc_els_rcv_flogi(struct lpfc_hba * phba,
2587                    struct lpfc_iocbq * cmdiocb,
2588                    struct lpfc_nodelist * ndlp, uint8_t newnode)
2589 {
2590         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2591         uint32_t *lp = (uint32_t *) pcmd->virt;
2592         IOCB_t *icmd = &cmdiocb->iocb;
2593         struct serv_parm *sp;
2594         LPFC_MBOXQ_t *mbox;
2595         struct ls_rjt stat;
2596         uint32_t cmd, did;
2597         int rc;
2598
2599         cmd = *lp++;
2600         sp = (struct serv_parm *) lp;
2601
2602         /* FLOGI received */
2603
2604         lpfc_set_disctmo(phba);
2605
2606         if (phba->fc_topology == TOPOLOGY_LOOP) {
2607                 /* We should never receive a FLOGI in loop mode, ignore it */
2608                 did = icmd->un.elsreq64.remoteID;
2609
2610                 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
2611                    Loop Mode */
2612                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
2613                                 "%d:0113 An FLOGI ELS command x%x was received "
2614                                 "from DID x%x in Loop Mode\n",
2615                                 phba->brd_no, cmd, did);
2616                 return 1;
2617         }
2618
2619         did = Fabric_DID;
2620
2621         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3))) {
2622                 /* For a FLOGI we accept, then if our portname is greater
2623                  * then the remote portname we initiate Nport login.
2624                  */
2625
2626                 rc = memcmp(&phba->fc_portname, &sp->portName,
2627                             sizeof (struct lpfc_name));
2628
2629                 if (!rc) {
2630                         if ((mbox = mempool_alloc(phba->mbox_mem_pool,
2631                                                   GFP_KERNEL)) == 0) {
2632                                 return 1;
2633                         }
2634                         lpfc_linkdown(phba);
2635                         lpfc_init_link(phba, mbox,
2636                                        phba->cfg_topology,
2637                                        phba->cfg_link_speed);
2638                         mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2639                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2640                         rc = lpfc_sli_issue_mbox
2641                                 (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
2642                         if (rc == MBX_NOT_FINISHED) {
2643                                 mempool_free( mbox, phba->mbox_mem_pool);
2644                         }
2645                         return 1;
2646                 } else if (rc > 0) {    /* greater than */
2647                         spin_lock_irq(phba->host->host_lock);
2648                         phba->fc_flag |= FC_PT2PT_PLOGI;
2649                         spin_unlock_irq(phba->host->host_lock);
2650                 }
2651                 phba->fc_flag |= FC_PT2PT;
2652                 phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2653         } else {
2654                 /* Reject this request because invalid parameters */
2655                 stat.un.b.lsRjtRsvd0 = 0;
2656                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2657                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
2658                 stat.un.b.vendorUnique = 0;
2659                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2660                 return 1;
2661         }
2662
2663         /* Send back ACC */
2664         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, newnode);
2665
2666         return 0;
2667 }
2668
2669 static int
2670 lpfc_els_rcv_rnid(struct lpfc_hba * phba,
2671                   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
2672 {
2673         struct lpfc_dmabuf *pcmd;
2674         uint32_t *lp;
2675         IOCB_t *icmd;
2676         RNID *rn;
2677         struct ls_rjt stat;
2678         uint32_t cmd, did;
2679
2680         icmd = &cmdiocb->iocb;
2681         did = icmd->un.elsreq64.remoteID;
2682         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2683         lp = (uint32_t *) pcmd->virt;
2684
2685         cmd = *lp++;
2686         rn = (RNID *) lp;
2687
2688         /* RNID received */
2689
2690         switch (rn->Format) {
2691         case 0:
2692         case RNID_TOPOLOGY_DISC:
2693                 /* Send back ACC */
2694                 lpfc_els_rsp_rnid_acc(phba, rn->Format, cmdiocb, ndlp);
2695                 break;
2696         default:
2697                 /* Reject this request because format not supported */
2698                 stat.un.b.lsRjtRsvd0 = 0;
2699                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2700                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2701                 stat.un.b.vendorUnique = 0;
2702                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2703         }
2704         return 0;
2705 }
2706
2707 static int
2708 lpfc_els_rcv_lirr(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2709                  struct lpfc_nodelist * ndlp)
2710 {
2711         struct ls_rjt stat;
2712
2713         /* For now, unconditionally reject this command */
2714         stat.un.b.lsRjtRsvd0 = 0;
2715         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2716         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2717         stat.un.b.vendorUnique = 0;
2718         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2719         return 0;
2720 }
2721
2722 static void
2723 lpfc_els_rsp_rps_acc(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
2724 {
2725         struct lpfc_sli *psli;
2726         struct lpfc_sli_ring *pring;
2727         MAILBOX_t *mb;
2728         IOCB_t *icmd;
2729         RPS_RSP *rps_rsp;
2730         uint8_t *pcmd;
2731         struct lpfc_iocbq *elsiocb;
2732         struct lpfc_nodelist *ndlp;
2733         uint16_t xri, status;
2734         uint32_t cmdsize;
2735
2736         psli = &phba->sli;
2737         pring = &psli->ring[LPFC_ELS_RING];
2738         mb = &pmb->mb;
2739
2740         ndlp = (struct lpfc_nodelist *) pmb->context2;
2741         xri = (uint16_t) ((unsigned long)(pmb->context1));
2742         pmb->context1 = 0;
2743         pmb->context2 = 0;
2744
2745         if (mb->mbxStatus) {
2746                 mempool_free( pmb, phba->mbox_mem_pool);
2747                 return;
2748         }
2749
2750         cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
2751         mempool_free( pmb, phba->mbox_mem_pool);
2752         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, lpfc_max_els_tries, ndlp,
2753                                                 ndlp->nlp_DID, ELS_CMD_ACC);
2754         if (!elsiocb)
2755                 return;
2756
2757         icmd = &elsiocb->iocb;
2758         icmd->ulpContext = xri;
2759
2760         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2761         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2762         pcmd += sizeof (uint32_t); /* Skip past command */
2763         rps_rsp = (RPS_RSP *)pcmd;
2764
2765         if (phba->fc_topology != TOPOLOGY_LOOP)
2766                 status = 0x10;
2767         else
2768                 status = 0x8;
2769         if (phba->fc_flag & FC_FABRIC)
2770                 status |= 0x4;
2771
2772         rps_rsp->rsvd1 = 0;
2773         rps_rsp->portStatus = be16_to_cpu(status);
2774         rps_rsp->linkFailureCnt = be32_to_cpu(mb->un.varRdLnk.linkFailureCnt);
2775         rps_rsp->lossSyncCnt = be32_to_cpu(mb->un.varRdLnk.lossSyncCnt);
2776         rps_rsp->lossSignalCnt = be32_to_cpu(mb->un.varRdLnk.lossSignalCnt);
2777         rps_rsp->primSeqErrCnt = be32_to_cpu(mb->un.varRdLnk.primSeqErrCnt);
2778         rps_rsp->invalidXmitWord = be32_to_cpu(mb->un.varRdLnk.invalidXmitWord);
2779         rps_rsp->crcCnt = be32_to_cpu(mb->un.varRdLnk.crcCnt);
2780
2781         /* Xmit ELS RPS ACC response tag <ulpIoTag> */
2782         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2783                         "%d:0128 Xmit ELS RPS ACC response tag x%x "
2784                         "Data: x%x x%x x%x x%x x%x\n",
2785                         phba->brd_no,
2786                         elsiocb->iocb.ulpIoTag,
2787                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2788                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2789
2790         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2791         phba->fc_stat.elsXmitACC++;
2792         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2793                 lpfc_els_free_iocb(phba, elsiocb);
2794         }
2795         return;
2796 }
2797
2798 static int
2799 lpfc_els_rcv_rps(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2800                  struct lpfc_nodelist * ndlp)
2801 {
2802         uint32_t *lp;
2803         uint8_t flag;
2804         LPFC_MBOXQ_t *mbox;
2805         struct lpfc_dmabuf *pcmd;
2806         RPS *rps;
2807         struct ls_rjt stat;
2808
2809         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2810             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2811                 stat.un.b.lsRjtRsvd0 = 0;
2812                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2813                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2814                 stat.un.b.vendorUnique = 0;
2815                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2816         }
2817
2818         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2819         lp = (uint32_t *) pcmd->virt;
2820         flag = (be32_to_cpu(*lp++) & 0xf);
2821         rps = (RPS *) lp;
2822
2823         if ((flag == 0) ||
2824             ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
2825             ((flag == 2) && (memcmp(&rps->un.portName, &phba->fc_portname,
2826                            sizeof (struct lpfc_name)) == 0))) {
2827                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC))) {
2828                         lpfc_read_lnk_stat(phba, mbox);
2829                         mbox->context1 =
2830                             (void *)((unsigned long)cmdiocb->iocb.ulpContext);
2831                         mbox->context2 = ndlp;
2832                         mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
2833                         if (lpfc_sli_issue_mbox (phba, mbox,
2834                             (MBX_NOWAIT | MBX_STOP_IOCB)) != MBX_NOT_FINISHED) {
2835                                 /* Mbox completion will send ELS Response */
2836                                 return 0;
2837                         }
2838                         mempool_free(mbox, phba->mbox_mem_pool);
2839                 }
2840         }
2841         stat.un.b.lsRjtRsvd0 = 0;
2842         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2843         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2844         stat.un.b.vendorUnique = 0;
2845         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2846         return 0;
2847 }
2848
2849 static int
2850 lpfc_els_rsp_rpl_acc(struct lpfc_hba * phba, uint16_t cmdsize,
2851                  struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2852 {
2853         IOCB_t *icmd;
2854         IOCB_t *oldcmd;
2855         RPL_RSP rpl_rsp;
2856         struct lpfc_iocbq *elsiocb;
2857         struct lpfc_sli_ring *pring;
2858         struct lpfc_sli *psli;
2859         uint8_t *pcmd;
2860
2861         psli = &phba->sli;
2862         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2863
2864         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2865                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2866         if (!elsiocb)
2867                 return 1;
2868
2869         icmd = &elsiocb->iocb;
2870         oldcmd = &oldiocb->iocb;
2871         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2872
2873         pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2874         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2875         pcmd += sizeof (uint16_t);
2876         *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
2877         pcmd += sizeof(uint16_t);
2878
2879         /* Setup the RPL ACC payload */
2880         rpl_rsp.listLen = be32_to_cpu(1);
2881         rpl_rsp.index = 0;
2882         rpl_rsp.port_num_blk.portNum = 0;
2883         rpl_rsp.port_num_blk.portID = be32_to_cpu(phba->fc_myDID);
2884         memcpy(&rpl_rsp.port_num_blk.portName, &phba->fc_portname,
2885             sizeof(struct lpfc_name));
2886
2887         memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
2888
2889
2890         /* Xmit ELS RPL ACC response tag <ulpIoTag> */
2891         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2892                         "%d:0128 Xmit ELS RPL ACC response tag x%x "
2893                         "Data: x%x x%x x%x x%x x%x\n",
2894                         phba->brd_no,
2895                         elsiocb->iocb.ulpIoTag,
2896                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2897                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2898
2899         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2900
2901         phba->fc_stat.elsXmitACC++;
2902         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2903                 lpfc_els_free_iocb(phba, elsiocb);
2904                 return 1;
2905         }
2906         return 0;
2907 }
2908
2909 static int
2910 lpfc_els_rcv_rpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2911                  struct lpfc_nodelist * ndlp)
2912 {
2913         struct lpfc_dmabuf *pcmd;
2914         uint32_t *lp;
2915         uint32_t maxsize;
2916         uint16_t cmdsize;
2917         RPL *rpl;
2918         struct ls_rjt stat;
2919
2920         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2921             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2922                 stat.un.b.lsRjtRsvd0 = 0;
2923                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2924                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2925                 stat.un.b.vendorUnique = 0;
2926                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2927         }
2928
2929         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2930         lp = (uint32_t *) pcmd->virt;
2931         rpl = (RPL *) (lp + 1);
2932
2933         maxsize = be32_to_cpu(rpl->maxsize);
2934
2935         /* We support only one port */
2936         if ((rpl->index == 0) &&
2937             ((maxsize == 0) ||
2938              ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
2939                 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
2940         } else {
2941                 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
2942         }
2943         lpfc_els_rsp_rpl_acc(phba, cmdsize, cmdiocb, ndlp);
2944
2945         return 0;
2946 }
2947
2948 static int
2949 lpfc_els_rcv_farp(struct lpfc_hba * phba,
2950                   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
2951 {
2952         struct lpfc_dmabuf *pcmd;
2953         uint32_t *lp;
2954         IOCB_t *icmd;
2955         FARP *fp;
2956         uint32_t cmd, cnt, did;
2957
2958         icmd = &cmdiocb->iocb;
2959         did = icmd->un.elsreq64.remoteID;
2960         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2961         lp = (uint32_t *) pcmd->virt;
2962
2963         cmd = *lp++;
2964         fp = (FARP *) lp;
2965
2966         /* FARP-REQ received from DID <did> */
2967         lpfc_printf_log(phba,
2968                          KERN_INFO,
2969                          LOG_IP,
2970                          "%d:0601 FARP-REQ received from DID x%x\n",
2971                          phba->brd_no, did);
2972
2973         /* We will only support match on WWPN or WWNN */
2974         if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
2975                 return 0;
2976         }
2977
2978         cnt = 0;
2979         /* If this FARP command is searching for my portname */
2980         if (fp->Mflags & FARP_MATCH_PORT) {
2981                 if (memcmp(&fp->RportName, &phba->fc_portname,
2982                            sizeof (struct lpfc_name)) == 0)
2983                         cnt = 1;
2984         }
2985
2986         /* If this FARP command is searching for my nodename */
2987         if (fp->Mflags & FARP_MATCH_NODE) {
2988                 if (memcmp(&fp->RnodeName, &phba->fc_nodename,
2989                            sizeof (struct lpfc_name)) == 0)
2990                         cnt = 1;
2991         }
2992
2993         if (cnt) {
2994                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
2995                    (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
2996                         /* Log back into the node before sending the FARP. */
2997                         if (fp->Rflags & FARP_REQUEST_PLOGI) {
2998                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2999                                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
3000                                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
3001                                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
3002                         }
3003
3004                         /* Send a FARP response to that node */
3005                         if (fp->Rflags & FARP_REQUEST_FARPR) {
3006                                 lpfc_issue_els_farpr(phba, did, 0);
3007                         }
3008                 }
3009         }
3010         return 0;
3011 }
3012
3013 static int
3014 lpfc_els_rcv_farpr(struct lpfc_hba * phba,
3015                    struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
3016 {
3017         struct lpfc_dmabuf *pcmd;
3018         uint32_t *lp;
3019         IOCB_t *icmd;
3020         uint32_t cmd, did;
3021
3022         icmd = &cmdiocb->iocb;
3023         did = icmd->un.elsreq64.remoteID;
3024         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3025         lp = (uint32_t *) pcmd->virt;
3026
3027         cmd = *lp++;
3028         /* FARP-RSP received from DID <did> */
3029         lpfc_printf_log(phba,
3030                          KERN_INFO,
3031                          LOG_IP,
3032                          "%d:0600 FARP-RSP received from DID x%x\n",
3033                          phba->brd_no, did);
3034
3035         /* ACCEPT the Farp resp request */
3036         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
3037
3038         return 0;
3039 }
3040
3041 static int
3042 lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
3043                  struct lpfc_nodelist * fan_ndlp)
3044 {
3045         struct lpfc_dmabuf *pcmd;
3046         uint32_t *lp;
3047         IOCB_t *icmd;
3048         uint32_t cmd, did;
3049         FAN *fp;
3050         struct lpfc_nodelist *ndlp, *next_ndlp;
3051
3052         /* FAN received */
3053         lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "%d:265 FAN received\n",
3054                                                                 phba->brd_no);
3055
3056         icmd = &cmdiocb->iocb;
3057         did = icmd->un.elsreq64.remoteID;
3058         pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
3059         lp = (uint32_t *)pcmd->virt;
3060
3061         cmd = *lp++;
3062         fp = (FAN *)lp;
3063
3064         /* FAN received; Fan does not have a reply sequence */
3065
3066         if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
3067                 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
3068                         sizeof(struct lpfc_name)) != 0) ||
3069                     (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
3070                         sizeof(struct lpfc_name)) != 0)) {
3071                         /*
3072                          * This node has switched fabrics.  FLOGI is required
3073                          * Clean up the old rpi's
3074                          */
3075
3076                         list_for_each_entry_safe(ndlp, next_ndlp,
3077                                 &phba->fc_npr_list, nlp_listp) {
3078
3079                                 if (ndlp->nlp_type & NLP_FABRIC) {
3080                                         /*
3081                                          * Clean up old Fabric, Nameserver and
3082                                          * other NLP_FABRIC logins
3083                                          */
3084                                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3085                                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3086                                         /* Fail outstanding I/O now since this
3087                                          * device is marked for PLOGI
3088                                          */
3089                                         lpfc_unreg_rpi(phba, ndlp);
3090                                 }
3091                         }
3092
3093                         phba->hba_state = LPFC_FLOGI;
3094                         lpfc_set_disctmo(phba);
3095                         lpfc_initial_flogi(phba);
3096                         return 0;
3097                 }
3098                 /* Discovery not needed,
3099                  * move the nodes to their original state.
3100                  */
3101                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
3102                         nlp_listp) {
3103
3104                         switch (ndlp->nlp_prev_state) {
3105                         case NLP_STE_UNMAPPED_NODE:
3106                                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3107                                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
3108                                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
3109                                 break;
3110
3111                         case NLP_STE_MAPPED_NODE:
3112                                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3113                                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
3114                                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
3115                                 break;
3116
3117                         default:
3118                                 break;
3119                         }
3120                 }
3121
3122                 /* Start discovery - this should just do CLEAR_LA */
3123                 lpfc_disc_start(phba);
3124         }
3125         return 0;
3126 }
3127
3128 void
3129 lpfc_els_timeout(unsigned long ptr)
3130 {
3131         struct lpfc_hba *phba;
3132         unsigned long iflag;
3133
3134         phba = (struct lpfc_hba *)ptr;
3135         if (phba == 0)
3136                 return;
3137         spin_lock_irqsave(phba->host->host_lock, iflag);
3138         if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
3139                 phba->work_hba_events |= WORKER_ELS_TMO;
3140                 if (phba->work_wait)
3141                         wake_up(phba->work_wait);
3142         }
3143         spin_unlock_irqrestore(phba->host->host_lock, iflag);
3144         return;
3145 }
3146
3147 void
3148 lpfc_els_timeout_handler(struct lpfc_hba *phba)
3149 {
3150         struct lpfc_sli_ring *pring;
3151         struct lpfc_iocbq *tmp_iocb, *piocb;
3152         IOCB_t *cmd = NULL;
3153         struct lpfc_dmabuf *pcmd;
3154         struct list_head *dlp;
3155         uint32_t *elscmd;
3156         uint32_t els_command;
3157         uint32_t timeout;
3158         uint32_t remote_ID;
3159
3160         if (phba == 0)
3161                 return;
3162         spin_lock_irq(phba->host->host_lock);
3163         /* If the timer is already canceled do nothing */
3164         if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
3165                 spin_unlock_irq(phba->host->host_lock);
3166                 return;
3167         }
3168         timeout = (uint32_t)(phba->fc_ratov << 1);
3169
3170         pring = &phba->sli.ring[LPFC_ELS_RING];
3171         dlp = &pring->txcmplq;
3172
3173         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
3174                 cmd = &piocb->iocb;
3175
3176                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3177                         continue;
3178                 }
3179                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3180                 elscmd = (uint32_t *) (pcmd->virt);
3181                 els_command = *elscmd;
3182
3183                 if ((els_command == ELS_CMD_FARP)
3184                     || (els_command == ELS_CMD_FARPR)) {
3185                         continue;
3186                 }
3187
3188                 if (piocb->drvrTimeout > 0) {
3189                         if (piocb->drvrTimeout >= timeout) {
3190                                 piocb->drvrTimeout -= timeout;
3191                         } else {
3192                                 piocb->drvrTimeout = 0;
3193                         }
3194                         continue;
3195                 }
3196
3197                 list_del(&piocb->list);
3198                 pring->txcmplq_cnt--;
3199
3200                 if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
3201                         struct lpfc_nodelist *ndlp;
3202                         spin_unlock_irq(phba->host->host_lock);
3203                         ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext);
3204                         spin_lock_irq(phba->host->host_lock);
3205                         remote_ID = ndlp->nlp_DID;
3206                         if (cmd->un.elsreq64.bdl.ulpIoTag32) {
3207                                 lpfc_sli_issue_abort_iotag32(phba,
3208                                         pring, piocb);
3209                         }
3210                 } else {
3211                         remote_ID = cmd->un.elsreq64.remoteID;
3212                 }
3213
3214                 lpfc_printf_log(phba,
3215                                 KERN_ERR,
3216                                 LOG_ELS,
3217                                 "%d:0127 ELS timeout Data: x%x x%x x%x x%x\n",
3218                                 phba->brd_no, els_command,
3219                                 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
3220
3221                 /*
3222                  * The iocb has timed out; abort it.
3223                  */
3224                 if (piocb->iocb_cmpl) {
3225                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3226                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3227                         spin_unlock_irq(phba->host->host_lock);
3228                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3229                         spin_lock_irq(phba->host->host_lock);
3230                 } else
3231                         lpfc_sli_release_iocbq(phba, piocb);
3232         }
3233         if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt) {
3234                 phba->els_tmofunc.expires = jiffies + HZ * timeout;
3235                 add_timer(&phba->els_tmofunc);
3236         }
3237         spin_unlock_irq(phba->host->host_lock);
3238 }
3239
3240 void
3241 lpfc_els_flush_cmd(struct lpfc_hba * phba)
3242 {
3243         struct lpfc_sli_ring *pring;
3244         struct lpfc_iocbq *tmp_iocb, *piocb;
3245         IOCB_t *cmd = NULL;
3246         struct lpfc_dmabuf *pcmd;
3247         uint32_t *elscmd;
3248         uint32_t els_command;
3249
3250         pring = &phba->sli.ring[LPFC_ELS_RING];
3251         spin_lock_irq(phba->host->host_lock);
3252         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
3253                 cmd = &piocb->iocb;
3254
3255                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3256                         continue;
3257                 }
3258
3259                 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
3260                 if ((cmd->ulpCommand == CMD_QUE_RING_BUF_CN) ||
3261                     (cmd->ulpCommand == CMD_QUE_RING_BUF64_CN) ||
3262                     (cmd->ulpCommand == CMD_CLOSE_XRI_CN) ||
3263                     (cmd->ulpCommand == CMD_ABORT_XRI_CN)) {
3264                         continue;
3265                 }
3266
3267                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3268                 elscmd = (uint32_t *) (pcmd->virt);
3269                 els_command = *elscmd;
3270
3271                 list_del(&piocb->list);
3272                 pring->txcmplq_cnt--;
3273
3274                 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3275                 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3276
3277                 if (piocb->iocb_cmpl) {
3278                         spin_unlock_irq(phba->host->host_lock);
3279                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3280                         spin_lock_irq(phba->host->host_lock);
3281                 } else
3282                         lpfc_sli_release_iocbq(phba, piocb);
3283         }
3284
3285         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
3286                 cmd = &piocb->iocb;
3287
3288                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3289                         continue;
3290                 }
3291                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3292                 elscmd = (uint32_t *) (pcmd->virt);
3293                 els_command = *elscmd;
3294
3295                 list_del(&piocb->list);
3296                 pring->txcmplq_cnt--;
3297
3298                 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3299                 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3300
3301                 if (piocb->iocb_cmpl) {
3302                         spin_unlock_irq(phba->host->host_lock);
3303                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3304                         spin_lock_irq(phba->host->host_lock);
3305                 } else
3306                         lpfc_sli_release_iocbq(phba, piocb);
3307         }
3308         spin_unlock_irq(phba->host->host_lock);
3309         return;
3310 }
3311
3312 void
3313 lpfc_els_unsol_event(struct lpfc_hba * phba,
3314                      struct lpfc_sli_ring * pring, struct lpfc_iocbq * elsiocb)
3315 {
3316         struct lpfc_sli *psli;
3317         struct lpfc_nodelist *ndlp;
3318         struct lpfc_dmabuf *mp;
3319         uint32_t *lp;
3320         IOCB_t *icmd;
3321         struct ls_rjt stat;
3322         uint32_t cmd;
3323         uint32_t did;
3324         uint32_t newnode;
3325         uint32_t drop_cmd = 0;  /* by default do NOT drop received cmd */
3326         uint32_t rjt_err = 0;
3327
3328         psli = &phba->sli;
3329         icmd = &elsiocb->iocb;
3330
3331         if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) &&
3332                 ((icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING)) {
3333                 /* Not enough posted buffers; Try posting more buffers */
3334                 phba->fc_stat.NoRcvBuf++;
3335                 lpfc_post_buffer(phba, pring, 0, 1);
3336                 return;
3337         }
3338
3339         /* If there are no BDEs associated with this IOCB,
3340          * there is nothing to do.
3341          */
3342         if (icmd->ulpBdeCount == 0)
3343                 return;
3344
3345         /* type of ELS cmd is first 32bit word in packet */
3346         mp = lpfc_sli_ringpostbuf_get(phba, pring, getPaddr(icmd->un.
3347                                                             cont64[0].
3348                                                             addrHigh,
3349                                                             icmd->un.
3350                                                             cont64[0].addrLow));
3351         if (mp == 0) {
3352                 drop_cmd = 1;
3353                 goto dropit;
3354         }
3355
3356         newnode = 0;
3357         lp = (uint32_t *) mp->virt;
3358         cmd = *lp++;
3359         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], 1, 1);
3360
3361         if (icmd->ulpStatus) {
3362                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3363                 kfree(mp);
3364                 drop_cmd = 1;
3365                 goto dropit;
3366         }
3367
3368         /* Check to see if link went down during discovery */
3369         if (lpfc_els_chk_latt(phba)) {
3370                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3371                 kfree(mp);
3372                 drop_cmd = 1;
3373                 goto dropit;
3374         }
3375
3376         did = icmd->un.rcvels.remoteID;
3377         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
3378         if (!ndlp) {
3379                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3380                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3381                 if (!ndlp) {
3382                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3383                         kfree(mp);
3384                         drop_cmd = 1;
3385                         goto dropit;
3386                 }
3387
3388                 lpfc_nlp_init(phba, ndlp, did);
3389                 newnode = 1;
3390                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) {
3391                         ndlp->nlp_type |= NLP_FABRIC;
3392                 }
3393         }
3394
3395         phba->fc_stat.elsRcvFrame++;
3396         elsiocb->context1 = ndlp;
3397         elsiocb->context2 = mp;
3398
3399         if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
3400                 cmd &= ELS_CMD_MASK;
3401         }
3402         /* ELS command <elsCmd> received from NPORT <did> */
3403         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3404                         "%d:0112 ELS command x%x received from NPORT x%x "
3405                         "Data: x%x\n", phba->brd_no, cmd, did, phba->hba_state);
3406
3407         switch (cmd) {
3408         case ELS_CMD_PLOGI:
3409                 phba->fc_stat.elsRcvPLOGI++;
3410                 if (phba->hba_state < LPFC_DISC_AUTH) {
3411                         rjt_err = 1;
3412                         break;
3413                 }
3414                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PLOGI);
3415                 break;
3416         case ELS_CMD_FLOGI:
3417                 phba->fc_stat.elsRcvFLOGI++;
3418                 lpfc_els_rcv_flogi(phba, elsiocb, ndlp, newnode);
3419                 if (newnode) {
3420                         mempool_free( ndlp, phba->nlp_mem_pool);
3421                 }
3422                 break;
3423         case ELS_CMD_LOGO:
3424                 phba->fc_stat.elsRcvLOGO++;
3425                 if (phba->hba_state < LPFC_DISC_AUTH) {
3426                         rjt_err = 1;
3427                         break;
3428                 }
3429                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
3430                 break;
3431         case ELS_CMD_PRLO:
3432                 phba->fc_stat.elsRcvPRLO++;
3433                 if (phba->hba_state < LPFC_DISC_AUTH) {
3434                         rjt_err = 1;
3435                         break;
3436                 }
3437                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
3438                 break;
3439         case ELS_CMD_RSCN:
3440                 phba->fc_stat.elsRcvRSCN++;
3441                 lpfc_els_rcv_rscn(phba, elsiocb, ndlp, newnode);
3442                 if (newnode) {
3443                         mempool_free( ndlp, phba->nlp_mem_pool);
3444                 }
3445                 break;
3446         case ELS_CMD_ADISC:
3447                 phba->fc_stat.elsRcvADISC++;
3448                 if (phba->hba_state < LPFC_DISC_AUTH) {
3449                         rjt_err = 1;
3450                         break;
3451                 }
3452                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_ADISC);
3453                 break;
3454         case ELS_CMD_PDISC:
3455                 phba->fc_stat.elsRcvPDISC++;
3456                 if (phba->hba_state < LPFC_DISC_AUTH) {
3457                         rjt_err = 1;
3458                         break;
3459                 }
3460                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PDISC);
3461                 break;
3462         case ELS_CMD_FARPR:
3463                 phba->fc_stat.elsRcvFARPR++;
3464                 lpfc_els_rcv_farpr(phba, elsiocb, ndlp);
3465                 break;
3466         case ELS_CMD_FARP:
3467                 phba->fc_stat.elsRcvFARP++;
3468                 lpfc_els_rcv_farp(phba, elsiocb, ndlp);
3469                 break;
3470         case ELS_CMD_FAN:
3471                 phba->fc_stat.elsRcvFAN++;
3472                 lpfc_els_rcv_fan(phba, elsiocb, ndlp);
3473                 break;
3474         case ELS_CMD_PRLI:
3475                 phba->fc_stat.elsRcvPRLI++;
3476                 if (phba->hba_state < LPFC_DISC_AUTH) {
3477                         rjt_err = 1;
3478                         break;
3479                 }
3480                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
3481                 break;
3482         case ELS_CMD_LIRR:
3483                 phba->fc_stat.elsRcvLIRR++;
3484                 lpfc_els_rcv_lirr(phba, elsiocb, ndlp);
3485                 if (newnode) {
3486                         mempool_free( ndlp, phba->nlp_mem_pool);
3487                 }
3488                 break;
3489         case ELS_CMD_RPS:
3490                 phba->fc_stat.elsRcvRPS++;
3491                 lpfc_els_rcv_rps(phba, elsiocb, ndlp);
3492                 if (newnode) {
3493                         mempool_free( ndlp, phba->nlp_mem_pool);
3494                 }
3495                 break;
3496         case ELS_CMD_RPL:
3497                 phba->fc_stat.elsRcvRPL++;
3498                 lpfc_els_rcv_rpl(phba, elsiocb, ndlp);
3499                 if (newnode) {
3500                         mempool_free( ndlp, phba->nlp_mem_pool);
3501                 }
3502                 break;
3503         case ELS_CMD_RNID:
3504                 phba->fc_stat.elsRcvRNID++;
3505                 lpfc_els_rcv_rnid(phba, elsiocb, ndlp);
3506                 if (newnode) {
3507                         mempool_free( ndlp, phba->nlp_mem_pool);
3508                 }
3509                 break;
3510         default:
3511                 /* Unsupported ELS command, reject */
3512                 rjt_err = 1;
3513
3514                 /* Unknown ELS command <elsCmd> received from NPORT <did> */
3515                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
3516                                 "%d:0115 Unknown ELS command x%x received from "
3517                                 "NPORT x%x\n", phba->brd_no, cmd, did);
3518                 if (newnode) {
3519                         mempool_free( ndlp, phba->nlp_mem_pool);
3520                 }
3521                 break;
3522         }
3523
3524         /* check if need to LS_RJT received ELS cmd */
3525         if (rjt_err) {
3526                 stat.un.b.lsRjtRsvd0 = 0;
3527                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
3528                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
3529                 stat.un.b.vendorUnique = 0;
3530                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, elsiocb, ndlp);
3531         }
3532
3533         if (elsiocb->context2) {
3534                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3535                 kfree(mp);
3536         }
3537 dropit:
3538         /* check if need to drop received ELS cmd */
3539         if (drop_cmd == 1) {
3540                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
3541                                 "%d:0111 Dropping received ELS cmd "
3542                                 "Data: x%x x%x x%x\n", phba->brd_no,
3543                                 icmd->ulpStatus, icmd->un.ulpWord[4],
3544                                 icmd->ulpTimeout);
3545                 phba->fc_stat.elsRcvDrop++;
3546         }
3547         return;
3548 }