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         mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
 306         mbox->context2 = ndlp;
 307
 308         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
 309         if (rc == MBX_NOT_FINISHED)
 310                 goto fail_free_mbox;
 311
 312         return 0;
 313
 314  fail_free_mbox:
 315         mempool_free(mbox, phba->mbox_mem_pool);
 316  fail:
 317         return -ENXIO;
 318 }
 319
 320 /*
 321  * We FLOGIed into an NPort, initiate pt2pt protocol
 322  */
 323 static int
 324 lpfc_cmpl_els_flogi_nport(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
 325                 struct serv_parm *sp)
 326 {
 327         LPFC_MBOXQ_t *mbox;
 328         int rc;
 329
 330         spin_lock_irq(phba->host->host_lock);
 331         phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 332         spin_unlock_irq(phba->host->host_lock);
 333
 334         phba->fc_edtov = FF_DEF_EDTOV;
 335         phba->fc_ratov = FF_DEF_RATOV;
 336         rc = memcmp(&phba->fc_portname, &sp->portName,
 337                         sizeof(struct lpfc_name));
 338         if (rc >= 0) {
 339                 /* This side will initiate the PLOGI */
 340                 spin_lock_irq(phba->host->host_lock);
 341                 phba->fc_flag |= FC_PT2PT_PLOGI;
 342                 spin_unlock_irq(phba->host->host_lock);
 343
 344                 /*
 345                  * N_Port ID cannot be 0, set our to LocalID the other
 346                  * side will be RemoteID.
 347                  */
 348
 349                 /* not equal */
 350                 if (rc)
 351                         phba->fc_myDID = PT2PT_LocalID;
 352
 353                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 354                 if (!mbox)
 355                         goto fail;
 356
 357                 lpfc_config_link(phba, mbox);
 358
 359                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 360                 rc = lpfc_sli_issue_mbox(phba, mbox,
 361                                 MBX_NOWAIT | MBX_STOP_IOCB);
 362                 if (rc == MBX_NOT_FINISHED) {
 363                         mempool_free(mbox, phba->mbox_mem_pool);
 364                         goto fail;
 365                 }
 366                 mempool_free(ndlp, phba->nlp_mem_pool);
 367
 368                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, PT2PT_RemoteID);
 369                 if (!ndlp) {
 370                         /*
 371                          * Cannot find existing Fabric ndlp, so allocate a
 372                          * new one
 373                          */
 374                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 375                         if (!ndlp)
 376                                 goto fail;
 377
 378                         lpfc_nlp_init(phba, ndlp, PT2PT_RemoteID);
 379                 }
 380
 381                 memcpy(&ndlp->nlp_portname, &sp->portName,
 382                                 sizeof(struct lpfc_name));
 383                 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
 384                                 sizeof(struct lpfc_name));
 385                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 386                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 387                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 388         } else {
 389                 /* This side will wait for the PLOGI */
 390                 mempool_free( ndlp, phba->nlp_mem_pool);
 391         }
 392
 393         spin_lock_irq(phba->host->host_lock);
 394         phba->fc_flag |= FC_PT2PT;
 395         spin_unlock_irq(phba->host->host_lock);
 396
 397         /* Start discovery - this should just do CLEAR_LA */
 398         lpfc_disc_start(phba);
 399         return 0;
 400  fail:
 401         return -ENXIO;
 402 }
 403
 404 static void
 405 lpfc_cmpl_els_flogi(struct lpfc_hba * phba,
 406                     struct lpfc_iocbq * cmdiocb, struct lpfc_iocbq * rspiocb)
 407 {
 408         IOCB_t *irsp = &rspiocb->iocb;
 409         struct lpfc_nodelist *ndlp = cmdiocb->context1;
 410         struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
 411         struct serv_parm *sp;
 412         int rc;
 413
 414         /* Check to see if link went down during discovery */
 415         if (lpfc_els_chk_latt(phba)) {
 416                 lpfc_nlp_remove(phba, ndlp);
 417                 goto out;
 418         }
 419
 420         if (irsp->ulpStatus) {
 421                 /* Check for retry */
 422                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 423                         /* ELS command is being retried */
 424                         goto out;
 425                 }
 426                 /* FLOGI failed, so there is no fabric */
 427                 spin_lock_irq(phba->host->host_lock);
 428                 phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 429                 spin_unlock_irq(phba->host->host_lock);
 430
 431                 /* If private loop, then allow max outstandting els to be
 432                  * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
 433                  * alpa map would take too long otherwise.
 434                  */
 435                 if (phba->alpa_map[0] == 0) {
 436                         phba->cfg_discovery_threads =
 437                             LPFC_MAX_DISC_THREADS;
 438                 }
 439
 440                 /* FLOGI failure */
 441                 lpfc_printf_log(phba,
 442                                 KERN_INFO,
 443                                 LOG_ELS,
 444                                 "%d:0100 FLOGI failure Data: x%x x%x x%x\n",
 445                                 phba->brd_no,
 446                                 irsp->ulpStatus, irsp->un.ulpWord[4],
 447                                 irsp->ulpTimeout);
 448                 goto flogifail;
 449         }
 450
 451         /*
 452          * The FLogI succeeded.  Sync the data for the CPU before
 453          * accessing it.
 454          */
 455         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 456
 457         sp = prsp->virt + sizeof(uint32_t);
 458
 459         /* FLOGI completes successfully */
 460         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 461                         "%d:0101 FLOGI completes sucessfully "
 462                         "Data: x%x x%x x%x x%x\n",
 463                         phba->brd_no,
 464                         irsp->un.ulpWord[4], sp->cmn.e_d_tov,
 465                         sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
 466
 467         if (phba->hba_state == LPFC_FLOGI) {
 468                 /*
 469                  * If Common Service Parameters indicate Nport
 470                  * we are point to point, if Fport we are Fabric.
 471                  */
 472                 if (sp->cmn.fPort)
 473                         rc = lpfc_cmpl_els_flogi_fabric(phba, ndlp, sp, irsp);
 474                 else
 475                         rc = lpfc_cmpl_els_flogi_nport(phba, ndlp, sp);
 476
 477                 if (!rc)
 478                         goto out;
 479         }
 480
 481 flogifail:
 482         lpfc_nlp_remove(phba, ndlp);
 483
 484         if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
 485             (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED &&
 486              irsp->un.ulpWord[4] != IOERR_SLI_DOWN)) {
 487                 /* FLOGI failed, so just use loop map to make discovery list */
 488                 lpfc_disc_list_loopmap(phba);
 489
 490                 /* Start discovery */
 491                 lpfc_disc_start(phba);
 492         }
 493
 494 out:
 495         lpfc_els_free_iocb(phba, cmdiocb);
 496 }
 497
 498 static int
 499 lpfc_issue_els_flogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 500                      uint8_t retry)
 501 {
 502         struct serv_parm *sp;
 503         IOCB_t *icmd;
 504         struct lpfc_iocbq *elsiocb;
 505         struct lpfc_sli_ring *pring;
 506         uint8_t *pcmd;
 507         uint16_t cmdsize;
 508         uint32_t tmo;
 509         int rc;
 510
 511         pring = &phba->sli.ring[LPFC_ELS_RING];
 512
 513         cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
 514         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
 515                                                  ndlp->nlp_DID, ELS_CMD_FLOGI);
 516         if (!elsiocb)
 517                 return 1;
 518
 519         icmd = &elsiocb->iocb;
 520         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 521
 522         /* For FLOGI request, remainder of payload is service parameters */
 523         *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
 524         pcmd += sizeof (uint32_t);
 525         memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
 526         sp = (struct serv_parm *) pcmd;
 527
 528         /* Setup CSPs accordingly for Fabric */
 529         sp->cmn.e_d_tov = 0;
 530         sp->cmn.w2.r_a_tov = 0;
 531         sp->cls1.classValid = 0;
 532         sp->cls2.seqDelivery = 1;
 533         sp->cls3.seqDelivery = 1;
 534         if (sp->cmn.fcphLow < FC_PH3)
 535                 sp->cmn.fcphLow = FC_PH3;
 536         if (sp->cmn.fcphHigh < FC_PH3)
 537                 sp->cmn.fcphHigh = FC_PH3;
 538
 539         tmo = phba->fc_ratov;
 540         phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
 541         lpfc_set_disctmo(phba);
 542         phba->fc_ratov = tmo;
 543
 544         phba->fc_stat.elsXmitFLOGI++;
 545         elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
 546         spin_lock_irq(phba->host->host_lock);
 547         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
 548         spin_unlock_irq(phba->host->host_lock);
 549         if (rc == IOCB_ERROR) {
 550                 lpfc_els_free_iocb(phba, elsiocb);
 551                 return 1;
 552         }
 553         return 0;
 554 }
 555
 556 int
 557 lpfc_els_abort_flogi(struct lpfc_hba * phba)
 558 {
 559         struct lpfc_sli_ring *pring;
 560         struct lpfc_iocbq *iocb, *next_iocb;
 561         struct lpfc_nodelist *ndlp;
 562         IOCB_t *icmd;
 563
 564         /* Abort outstanding I/O on NPort <nlp_DID> */
 565         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 566                         "%d:0201 Abort outstanding I/O on NPort x%x\n",
 567                         phba->brd_no, Fabric_DID);
 568
 569         pring = &phba->sli.ring[LPFC_ELS_RING];
 570
 571         /*
 572          * Check the txcmplq for an iocb that matches the nport the driver is
 573          * searching for.
 574          */
 575         spin_lock_irq(phba->host->host_lock);
 576         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 577                 icmd = &iocb->iocb;
 578                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
 579                         ndlp = (struct lpfc_nodelist *)(iocb->context1);
 580                         if (ndlp && (ndlp->nlp_DID == Fabric_DID)) {
 581                                 list_del(&iocb->list);
 582                                 pring->txcmplq_cnt--;
 583
 584                                 if ((icmd->un.elsreq64.bdl.ulpIoTag32)) {
 585                                         lpfc_sli_issue_abort_iotag32
 586                                                 (phba, pring, iocb);
 587                                 }
 588                                 if (iocb->iocb_cmpl) {
 589                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 590                                         icmd->un.ulpWord[4] =
 591                                             IOERR_SLI_ABORTED;
 592                                         spin_unlock_irq(phba->host->host_lock);
 593                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 594                                         spin_lock_irq(phba->host->host_lock);
 595                                 } else
 596                                         lpfc_sli_release_iocbq(phba, iocb);
 597                         }
 598                 }
 599         }
 600         spin_unlock_irq(phba->host->host_lock);
 601
 602         return 0;
 603 }
 604
 605 int
 606 lpfc_initial_flogi(struct lpfc_hba * phba)
 607 {
 608         struct lpfc_nodelist *ndlp;
 609
 610         /* First look for the Fabric ndlp */
 611         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, Fabric_DID);
 612         if (!ndlp) {
 613                 /* Cannot find existing Fabric ndlp, so allocate a new one */
 614                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
 615                 if (!ndlp)
 616                         return 0;
 617                 lpfc_nlp_init(phba, ndlp, Fabric_DID);
 618         } else {
 619                 lpfc_nlp_list(phba, ndlp, NLP_JUST_DQ);
 620         }
 621         if (lpfc_issue_els_flogi(phba, ndlp, 0)) {
 622                 mempool_free( ndlp, phba->nlp_mem_pool);
 623         }
 624         return 1;
 625 }
 626
 627 static void
 628 lpfc_more_plogi(struct lpfc_hba * phba)
 629 {
 630         int sentplogi;
 631
 632         if (phba->num_disc_nodes)
 633                 phba->num_disc_nodes--;
 634
 635         /* Continue discovery with <num_disc_nodes> PLOGIs to go */
 636         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 637                         "%d:0232 Continue discovery with %d PLOGIs to go "
 638                         "Data: x%x x%x x%x\n",
 639                         phba->brd_no, phba->num_disc_nodes, phba->fc_plogi_cnt,
 640                         phba->fc_flag, phba->hba_state);
 641
 642         /* Check to see if there are more PLOGIs to be sent */
 643         if (phba->fc_flag & FC_NLP_MORE) {
 644                 /* go thru NPR list and issue any remaining ELS PLOGIs */
 645                 sentplogi = lpfc_els_disc_plogi(phba);
 646         }
 647         return;
 648 }
 649
 650 static struct lpfc_nodelist *
 651 lpfc_plogi_confirm_nport(struct lpfc_hba * phba, struct lpfc_dmabuf *prsp,
 652                          struct lpfc_nodelist *ndlp)
 653 {
 654         struct lpfc_nodelist *new_ndlp;
 655         uint32_t *lp;
 656         struct serv_parm *sp;
 657         uint8_t name[sizeof (struct lpfc_name)];
 658         uint32_t rc;
 659
 660         lp = (uint32_t *) prsp->virt;
 661         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 662         memset(name, 0, sizeof (struct lpfc_name));
 663
 664         /* Now we to find out if the NPort we are logging into, matches the WWPN
 665          * we have for that ndlp. If not, we have some work to do.
 666          */
 667         new_ndlp = lpfc_findnode_wwpn(phba, NLP_SEARCH_ALL, &sp->portName);
 668
 669         if (new_ndlp == ndlp)
 670                 return ndlp;
 671
 672         if (!new_ndlp) {
 673                 rc =
 674                    memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name));
 675                 if (!rc)
 676                         return ndlp;
 677                 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
 678                 if (!new_ndlp)
 679                         return ndlp;
 680
 681                 lpfc_nlp_init(phba, new_ndlp, ndlp->nlp_DID);
 682         }
 683
 684         lpfc_unreg_rpi(phba, new_ndlp);
 685         new_ndlp->nlp_DID = ndlp->nlp_DID;
 686         new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
 687         new_ndlp->nlp_state = ndlp->nlp_state;
 688         lpfc_nlp_list(phba, new_ndlp, ndlp->nlp_flag & NLP_LIST_MASK);
 689
 690         /* Move this back to NPR list */
 691         if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
 692                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 693         }
 694         else {
 695                 lpfc_unreg_rpi(phba, ndlp);
 696                 ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */
 697                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 698                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 699         }
 700         return new_ndlp;
 701 }
 702
 703 static void
 704 lpfc_cmpl_els_plogi(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 705                     struct lpfc_iocbq * rspiocb)
 706 {
 707         IOCB_t *irsp;
 708         struct lpfc_nodelist *ndlp;
 709         struct lpfc_dmabuf *prsp;
 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                 prsp = list_entry(((struct lpfc_dmabuf *)
 777                         cmdiocb->context2)->list.next,
 778                         struct lpfc_dmabuf, list);
 779                 ndlp = lpfc_plogi_confirm_nport(phba, prsp, ndlp);
 780                 rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 781                                         NLP_EVT_CMPL_PLOGI);
 782         }
 783
 784         if (disc && phba->num_disc_nodes) {
 785                 /* Check to see if there are more PLOGIs to be sent */
 786                 lpfc_more_plogi(phba);
 787
 788                 if (phba->num_disc_nodes == 0) {
 789                         spin_lock_irq(phba->host->host_lock);
 790                         phba->fc_flag &= ~FC_NDISC_ACTIVE;
 791                         spin_unlock_irq(phba->host->host_lock);
 792
 793                         lpfc_can_disctmo(phba);
 794                         if (phba->fc_flag & FC_RSCN_MODE) {
 795                                 /*
 796                                  * Check to see if more RSCNs came in while
 797                                  * we were processing this one.
 798                                  */
 799                                 if ((phba->fc_rscn_id_cnt == 0) &&
 800                                 (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
 801                                         spin_lock_irq(phba->host->host_lock);
 802                                         phba->fc_flag &= ~FC_RSCN_MODE;
 803                                         spin_unlock_irq(phba->host->host_lock);
 804                                 } else {
 805                                         lpfc_els_handle_rscn(phba);
 806                                 }
 807                         }
 808                 }
 809         }
 810
 811 out:
 812         lpfc_els_free_iocb(phba, cmdiocb);
 813         return;
 814 }
 815
 816 int
 817 lpfc_issue_els_plogi(struct lpfc_hba * phba, uint32_t did, uint8_t retry)
 818 {
 819         struct serv_parm *sp;
 820         IOCB_t *icmd;
 821         struct lpfc_iocbq *elsiocb;
 822         struct lpfc_sli_ring *pring;
 823         struct lpfc_sli *psli;
 824         uint8_t *pcmd;
 825         uint16_t cmdsize;
 826
 827         psli = &phba->sli;
 828         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 829
 830         cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
 831         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, NULL, did,
 832                                                                 ELS_CMD_PLOGI);
 833         if (!elsiocb)
 834                 return 1;
 835
 836         icmd = &elsiocb->iocb;
 837         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 838
 839         /* For PLOGI request, remainder of payload is service parameters */
 840         *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
 841         pcmd += sizeof (uint32_t);
 842         memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
 843         sp = (struct serv_parm *) pcmd;
 844
 845         if (sp->cmn.fcphLow < FC_PH_4_3)
 846                 sp->cmn.fcphLow = FC_PH_4_3;
 847
 848         if (sp->cmn.fcphHigh < FC_PH3)
 849                 sp->cmn.fcphHigh = FC_PH3;
 850
 851         phba->fc_stat.elsXmitPLOGI++;
 852         elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
 853         spin_lock_irq(phba->host->host_lock);
 854         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
 855                 spin_unlock_irq(phba->host->host_lock);
 856                 lpfc_els_free_iocb(phba, elsiocb);
 857                 return 1;
 858         }
 859         spin_unlock_irq(phba->host->host_lock);
 860         return 0;
 861 }
 862
 863 static void
 864 lpfc_cmpl_els_prli(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 865                    struct lpfc_iocbq * rspiocb)
 866 {
 867         IOCB_t *irsp;
 868         struct lpfc_sli *psli;
 869         struct lpfc_nodelist *ndlp;
 870
 871         psli = &phba->sli;
 872         /* we pass cmdiocb to state machine which needs rspiocb as well */
 873         cmdiocb->context_un.rsp_iocb = rspiocb;
 874
 875         irsp = &(rspiocb->iocb);
 876         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
 877         spin_lock_irq(phba->host->host_lock);
 878         ndlp->nlp_flag &= ~NLP_PRLI_SND;
 879         spin_unlock_irq(phba->host->host_lock);
 880
 881         /* PRLI completes to NPort <nlp_DID> */
 882         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 883                         "%d:0103 PRLI completes to NPort x%x "
 884                         "Data: x%x x%x x%x x%x\n",
 885                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
 886                         irsp->un.ulpWord[4], irsp->ulpTimeout,
 887                         phba->num_disc_nodes);
 888
 889         phba->fc_prli_sent--;
 890         /* Check to see if link went down during discovery */
 891         if (lpfc_els_chk_latt(phba))
 892                 goto out;
 893
 894         if (irsp->ulpStatus) {
 895                 /* Check for retry */
 896                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
 897                         /* ELS command is being retried */
 898                         goto out;
 899                 }
 900                 /* PRLI failed */
 901                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
 902                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
 903                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
 904                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
 905                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
 906                         goto out;
 907                 } else {
 908                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
 909                                         NLP_EVT_CMPL_PRLI);
 910                 }
 911         } else {
 912                 /* Good status, call state machine */
 913                 lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI);
 914         }
 915
 916 out:
 917         lpfc_els_free_iocb(phba, cmdiocb);
 918         return;
 919 }
 920
 921 int
 922 lpfc_issue_els_prli(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 923                     uint8_t retry)
 924 {
 925         PRLI *npr;
 926         IOCB_t *icmd;
 927         struct lpfc_iocbq *elsiocb;
 928         struct lpfc_sli_ring *pring;
 929         struct lpfc_sli *psli;
 930         uint8_t *pcmd;
 931         uint16_t cmdsize;
 932
 933         psli = &phba->sli;
 934         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 935
 936         cmdsize = (sizeof (uint32_t) + sizeof (PRLI));
 937         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
 938                                         ndlp->nlp_DID, ELS_CMD_PRLI);
 939         if (!elsiocb)
 940                 return 1;
 941
 942         icmd = &elsiocb->iocb;
 943         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
 944
 945         /* For PRLI request, remainder of payload is service parameters */
 946         memset(pcmd, 0, (sizeof (PRLI) + sizeof (uint32_t)));
 947         *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
 948         pcmd += sizeof (uint32_t);
 949
 950         /* For PRLI, remainder of payload is PRLI parameter page */
 951         npr = (PRLI *) pcmd;
 952         /*
 953          * If our firmware version is 3.20 or later,
 954          * set the following bits for FC-TAPE support.
 955          */
 956         if (phba->vpd.rev.feaLevelHigh >= 0x02) {
 957                 npr->ConfmComplAllowed = 1;
 958                 npr->Retry = 1;
 959                 npr->TaskRetryIdReq = 1;
 960         }
 961         npr->estabImagePair = 1;
 962         npr->readXferRdyDis = 1;
 963
 964         /* For FCP support */
 965         npr->prliType = PRLI_FCP_TYPE;
 966         npr->initiatorFunc = 1;
 967
 968         phba->fc_stat.elsXmitPRLI++;
 969         elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
 970         spin_lock_irq(phba->host->host_lock);
 971         ndlp->nlp_flag |= NLP_PRLI_SND;
 972         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
 973                 ndlp->nlp_flag &= ~NLP_PRLI_SND;
 974                 spin_unlock_irq(phba->host->host_lock);
 975                 lpfc_els_free_iocb(phba, elsiocb);
 976                 return 1;
 977         }
 978         spin_unlock_irq(phba->host->host_lock);
 979         phba->fc_prli_sent++;
 980         return 0;
 981 }
 982
 983 static void
 984 lpfc_more_adisc(struct lpfc_hba * phba)
 985 {
 986         int sentadisc;
 987
 988         if (phba->num_disc_nodes)
 989                 phba->num_disc_nodes--;
 990
 991         /* Continue discovery with <num_disc_nodes> ADISCs to go */
 992         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 993                         "%d:0210 Continue discovery with %d ADISCs to go "
 994                         "Data: x%x x%x x%x\n",
 995                         phba->brd_no, phba->num_disc_nodes, phba->fc_adisc_cnt,
 996                         phba->fc_flag, phba->hba_state);
 997
 998         /* Check to see if there are more ADISCs to be sent */
 999         if (phba->fc_flag & FC_NLP_MORE) {
1000                 lpfc_set_disctmo(phba);
1001
1002                 /* go thru NPR list and issue any remaining ELS ADISCs */
1003                 sentadisc = lpfc_els_disc_adisc(phba);
1004         }
1005         return;
1006 }
1007
1008 static void
1009 lpfc_rscn_disc(struct lpfc_hba * phba)
1010 {
1011         /* RSCN discovery */
1012         /* go thru NPR list and issue ELS PLOGIs */
1013         if (phba->fc_npr_cnt) {
1014                 if (lpfc_els_disc_plogi(phba))
1015                         return;
1016         }
1017         if (phba->fc_flag & FC_RSCN_MODE) {
1018                 /* Check to see if more RSCNs came in while we were
1019                  * processing this one.
1020                  */
1021                 if ((phba->fc_rscn_id_cnt == 0) &&
1022                     (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
1023                         spin_lock_irq(phba->host->host_lock);
1024                         phba->fc_flag &= ~FC_RSCN_MODE;
1025                         spin_unlock_irq(phba->host->host_lock);
1026                 } else {
1027                         lpfc_els_handle_rscn(phba);
1028                 }
1029         }
1030 }
1031
1032 static void
1033 lpfc_cmpl_els_adisc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1034                     struct lpfc_iocbq * rspiocb)
1035 {
1036         IOCB_t *irsp;
1037         struct lpfc_sli *psli;
1038         struct lpfc_nodelist *ndlp;
1039         LPFC_MBOXQ_t *mbox;
1040         int disc, rc;
1041
1042         psli = &phba->sli;
1043
1044         /* we pass cmdiocb to state machine which needs rspiocb as well */
1045         cmdiocb->context_un.rsp_iocb = rspiocb;
1046
1047         irsp = &(rspiocb->iocb);
1048         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1049
1050         /* Since ndlp can be freed in the disc state machine, note if this node
1051          * is being used during discovery.
1052          */
1053         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1054         spin_lock_irq(phba->host->host_lock);
1055         ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1056         spin_unlock_irq(phba->host->host_lock);
1057
1058         /* ADISC completes to NPort <nlp_DID> */
1059         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1060                         "%d:0104 ADISC completes to NPort x%x "
1061                         "Data: x%x x%x x%x x%x x%x\n",
1062                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1063                         irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
1064                         phba->num_disc_nodes);
1065
1066         /* Check to see if link went down during discovery */
1067         if (lpfc_els_chk_latt(phba)) {
1068                 spin_lock_irq(phba->host->host_lock);
1069                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1070                 spin_unlock_irq(phba->host->host_lock);
1071                 goto out;
1072         }
1073
1074         if (irsp->ulpStatus) {
1075                 /* Check for retry */
1076                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1077                         /* ELS command is being retried */
1078                         if (disc) {
1079                                 spin_lock_irq(phba->host->host_lock);
1080                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1081                                 spin_unlock_irq(phba->host->host_lock);
1082                                 lpfc_set_disctmo(phba);
1083                         }
1084                         goto out;
1085                 }
1086                 /* ADISC failed */
1087                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1088                 if ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
1089                    ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
1090                    (irsp->un.ulpWord[4] != IOERR_LINK_DOWN) &&
1091                    (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) {
1092                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1093                                         NLP_EVT_CMPL_ADISC);
1094                 }
1095         } else {
1096                 /* Good status, call state machine */
1097                 lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1098                                         NLP_EVT_CMPL_ADISC);
1099         }
1100
1101         if (disc && phba->num_disc_nodes) {
1102                 /* Check to see if there are more ADISCs to be sent */
1103                 lpfc_more_adisc(phba);
1104
1105                 /* Check to see if we are done with ADISC authentication */
1106                 if (phba->num_disc_nodes == 0) {
1107                         lpfc_can_disctmo(phba);
1108                         /* If we get here, there is nothing left to wait for */
1109                         if ((phba->hba_state < LPFC_HBA_READY) &&
1110                             (phba->hba_state != LPFC_CLEAR_LA)) {
1111                                 /* Link up discovery */
1112                                 if ((mbox = mempool_alloc(phba->mbox_mem_pool,
1113                                                           GFP_KERNEL))) {
1114                                         phba->hba_state = LPFC_CLEAR_LA;
1115                                         lpfc_clear_la(phba, mbox);
1116                                         mbox->mbox_cmpl =
1117                                             lpfc_mbx_cmpl_clear_la;
1118                                         rc = lpfc_sli_issue_mbox
1119                                                 (phba, mbox,
1120                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
1121                                         if (rc == MBX_NOT_FINISHED) {
1122                                                 mempool_free(mbox,
1123                                                      phba->mbox_mem_pool);
1124                                                 lpfc_disc_flush_list(phba);
1125                                                 psli->ring[(psli->ip_ring)].
1126                                                     flag &=
1127                                                     ~LPFC_STOP_IOCB_EVENT;
1128                                                 psli->ring[(psli->fcp_ring)].
1129                                                     flag &=
1130                                                     ~LPFC_STOP_IOCB_EVENT;
1131                                                 psli->ring[(psli->next_ring)].
1132                                                     flag &=
1133                                                     ~LPFC_STOP_IOCB_EVENT;
1134                                                 phba->hba_state =
1135                                                     LPFC_HBA_READY;
1136                                         }
1137                                 }
1138                         } else {
1139                                 lpfc_rscn_disc(phba);
1140                         }
1141                 }
1142         }
1143 out:
1144         lpfc_els_free_iocb(phba, cmdiocb);
1145         return;
1146 }
1147
1148 int
1149 lpfc_issue_els_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
1150                      uint8_t retry)
1151 {
1152         ADISC *ap;
1153         IOCB_t *icmd;
1154         struct lpfc_iocbq *elsiocb;
1155         struct lpfc_sli_ring *pring;
1156         struct lpfc_sli *psli;
1157         uint8_t *pcmd;
1158         uint16_t cmdsize;
1159
1160         psli = &phba->sli;
1161         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1162
1163         cmdsize = (sizeof (uint32_t) + sizeof (ADISC));
1164         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1165                                                 ndlp->nlp_DID, ELS_CMD_ADISC);
1166         if (!elsiocb)
1167                 return 1;
1168
1169         icmd = &elsiocb->iocb;
1170         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1171
1172         /* For ADISC request, remainder of payload is service parameters */
1173         *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1174         pcmd += sizeof (uint32_t);
1175
1176         /* Fill in ADISC payload */
1177         ap = (ADISC *) pcmd;
1178         ap->hardAL_PA = phba->fc_pref_ALPA;
1179         memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
1180         memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1181         ap->DID = be32_to_cpu(phba->fc_myDID);
1182
1183         phba->fc_stat.elsXmitADISC++;
1184         elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
1185         spin_lock_irq(phba->host->host_lock);
1186         ndlp->nlp_flag |= NLP_ADISC_SND;
1187         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1188                 ndlp->nlp_flag &= ~NLP_ADISC_SND;
1189                 spin_unlock_irq(phba->host->host_lock);
1190                 lpfc_els_free_iocb(phba, elsiocb);
1191                 return 1;
1192         }
1193         spin_unlock_irq(phba->host->host_lock);
1194         return 0;
1195 }
1196
1197 static void
1198 lpfc_cmpl_els_logo(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1199                    struct lpfc_iocbq * rspiocb)
1200 {
1201         IOCB_t *irsp;
1202         struct lpfc_sli *psli;
1203         struct lpfc_nodelist *ndlp;
1204
1205         psli = &phba->sli;
1206         /* we pass cmdiocb to state machine which needs rspiocb as well */
1207         cmdiocb->context_un.rsp_iocb = rspiocb;
1208
1209         irsp = &(rspiocb->iocb);
1210         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1211         spin_lock_irq(phba->host->host_lock);
1212         ndlp->nlp_flag &= ~NLP_LOGO_SND;
1213         spin_unlock_irq(phba->host->host_lock);
1214
1215         /* LOGO completes to NPort <nlp_DID> */
1216         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1217                         "%d:0105 LOGO completes to NPort x%x "
1218                         "Data: x%x x%x x%x x%x\n",
1219                         phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1220                         irsp->un.ulpWord[4], irsp->ulpTimeout,
1221                         phba->num_disc_nodes);
1222
1223         /* Check to see if link went down during discovery */
1224         if (lpfc_els_chk_latt(phba))
1225                 goto out;
1226
1227         if (irsp->ulpStatus) {
1228                 /* Check for retry */
1229                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1230                         /* ELS command is being retried */
1231                         goto out;
1232                 }
1233                 /* LOGO failed */
1234                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1235                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1236                    ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
1237                    (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
1238                    (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
1239                         goto out;
1240                 } else {
1241                         lpfc_disc_state_machine(phba, ndlp, cmdiocb,
1242                                         NLP_EVT_CMPL_LOGO);
1243                 }
1244         } else {
1245                 /* Good status, call state machine.
1246                  * This will unregister the rpi if needed.
1247                  */
1248                 lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
1249         }
1250
1251 out:
1252         lpfc_els_free_iocb(phba, cmdiocb);
1253         return;
1254 }
1255
1256 int
1257 lpfc_issue_els_logo(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
1258                     uint8_t retry)
1259 {
1260         IOCB_t *icmd;
1261         struct lpfc_iocbq *elsiocb;
1262         struct lpfc_sli_ring *pring;
1263         struct lpfc_sli *psli;
1264         uint8_t *pcmd;
1265         uint16_t cmdsize;
1266
1267         psli = &phba->sli;
1268         pring = &psli->ring[LPFC_ELS_RING];
1269
1270         cmdsize = (2 * sizeof (uint32_t)) + sizeof (struct lpfc_name);
1271         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1272                                                 ndlp->nlp_DID, ELS_CMD_LOGO);
1273         if (!elsiocb)
1274                 return 1;
1275
1276         icmd = &elsiocb->iocb;
1277         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1278         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
1279         pcmd += sizeof (uint32_t);
1280
1281         /* Fill in LOGO payload */
1282         *((uint32_t *) (pcmd)) = be32_to_cpu(phba->fc_myDID);
1283         pcmd += sizeof (uint32_t);
1284         memcpy(pcmd, &phba->fc_portname, sizeof (struct lpfc_name));
1285
1286         phba->fc_stat.elsXmitLOGO++;
1287         elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
1288         spin_lock_irq(phba->host->host_lock);
1289         ndlp->nlp_flag |= NLP_LOGO_SND;
1290         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1291                 ndlp->nlp_flag &= ~NLP_LOGO_SND;
1292                 spin_unlock_irq(phba->host->host_lock);
1293                 lpfc_els_free_iocb(phba, elsiocb);
1294                 return 1;
1295         }
1296         spin_unlock_irq(phba->host->host_lock);
1297         return 0;
1298 }
1299
1300 static void
1301 lpfc_cmpl_els_cmd(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1302                   struct lpfc_iocbq * rspiocb)
1303 {
1304         IOCB_t *irsp;
1305
1306         irsp = &rspiocb->iocb;
1307
1308         /* ELS cmd tag <ulpIoTag> completes */
1309         lpfc_printf_log(phba,
1310                         KERN_INFO,
1311                         LOG_ELS,
1312                         "%d:0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
1313                         phba->brd_no,
1314                         irsp->ulpIoTag, irsp->ulpStatus,
1315                         irsp->un.ulpWord[4], irsp->ulpTimeout);
1316
1317         /* Check to see if link went down during discovery */
1318         lpfc_els_chk_latt(phba);
1319         lpfc_els_free_iocb(phba, cmdiocb);
1320         return;
1321 }
1322
1323 int
1324 lpfc_issue_els_scr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
1325 {
1326         IOCB_t *icmd;
1327         struct lpfc_iocbq *elsiocb;
1328         struct lpfc_sli_ring *pring;
1329         struct lpfc_sli *psli;
1330         uint8_t *pcmd;
1331         uint16_t cmdsize;
1332         struct lpfc_nodelist *ndlp;
1333
1334         psli = &phba->sli;
1335         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1336         cmdsize = (sizeof (uint32_t) + sizeof (SCR));
1337         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1338         if (!ndlp)
1339                 return 1;
1340
1341         lpfc_nlp_init(phba, ndlp, nportid);
1342
1343         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1344                                                 ndlp->nlp_DID, ELS_CMD_SCR);
1345         if (!elsiocb) {
1346                 mempool_free( ndlp, phba->nlp_mem_pool);
1347                 return 1;
1348         }
1349
1350         icmd = &elsiocb->iocb;
1351         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1352
1353         *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
1354         pcmd += sizeof (uint32_t);
1355
1356         /* For SCR, remainder of payload is SCR parameter page */
1357         memset(pcmd, 0, sizeof (SCR));
1358         ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
1359
1360         phba->fc_stat.elsXmitSCR++;
1361         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
1362         spin_lock_irq(phba->host->host_lock);
1363         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1364                 spin_unlock_irq(phba->host->host_lock);
1365                 mempool_free( ndlp, phba->nlp_mem_pool);
1366                 lpfc_els_free_iocb(phba, elsiocb);
1367                 return 1;
1368         }
1369         spin_unlock_irq(phba->host->host_lock);
1370         mempool_free( ndlp, phba->nlp_mem_pool);
1371         return 0;
1372 }
1373
1374 static int
1375 lpfc_issue_els_farpr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
1376 {
1377         IOCB_t *icmd;
1378         struct lpfc_iocbq *elsiocb;
1379         struct lpfc_sli_ring *pring;
1380         struct lpfc_sli *psli;
1381         FARP *fp;
1382         uint8_t *pcmd;
1383         uint32_t *lp;
1384         uint16_t cmdsize;
1385         struct lpfc_nodelist *ondlp;
1386         struct lpfc_nodelist *ndlp;
1387
1388         psli = &phba->sli;
1389         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1390         cmdsize = (sizeof (uint32_t) + sizeof (FARP));
1391         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1392         if (!ndlp)
1393                 return 1;
1394         lpfc_nlp_init(phba, ndlp, nportid);
1395
1396         elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
1397                                                 ndlp->nlp_DID, ELS_CMD_RNID);
1398         if (!elsiocb) {
1399                 mempool_free( ndlp, phba->nlp_mem_pool);
1400                 return 1;
1401         }
1402
1403         icmd = &elsiocb->iocb;
1404         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1405
1406         *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
1407         pcmd += sizeof (uint32_t);
1408
1409         /* Fill in FARPR payload */
1410         fp = (FARP *) (pcmd);
1411         memset(fp, 0, sizeof (FARP));
1412         lp = (uint32_t *) pcmd;
1413         *lp++ = be32_to_cpu(nportid);
1414         *lp++ = be32_to_cpu(phba->fc_myDID);
1415         fp->Rflags = 0;
1416         fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
1417
1418         memcpy(&fp->RportName, &phba->fc_portname, sizeof (struct lpfc_name));
1419         memcpy(&fp->RnodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1420         if ((ondlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, nportid))) {
1421                 memcpy(&fp->OportName, &ondlp->nlp_portname,
1422                        sizeof (struct lpfc_name));
1423                 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
1424                        sizeof (struct lpfc_name));
1425         }
1426
1427         phba->fc_stat.elsXmitFARPR++;
1428         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
1429         spin_lock_irq(phba->host->host_lock);
1430         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
1431                 spin_unlock_irq(phba->host->host_lock);
1432                 mempool_free( ndlp, phba->nlp_mem_pool);
1433                 lpfc_els_free_iocb(phba, elsiocb);
1434                 return 1;
1435         }
1436         spin_unlock_irq(phba->host->host_lock);
1437         mempool_free( ndlp, phba->nlp_mem_pool);
1438         return 0;
1439 }
1440
1441 void
1442 lpfc_cancel_retry_delay_tmo(struct lpfc_hba *phba, struct lpfc_nodelist * nlp)
1443 {
1444         nlp->nlp_flag &= ~NLP_DELAY_TMO;
1445         del_timer_sync(&nlp->nlp_delayfunc);
1446         nlp->nlp_last_elscmd = 0;
1447
1448         if (!list_empty(&nlp->els_retry_evt.evt_listp))
1449                 list_del_init(&nlp->els_retry_evt.evt_listp);
1450
1451         if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
1452                 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1453                 if (phba->num_disc_nodes) {
1454                         /* Check to see if there are more
1455                          * PLOGIs to be sent
1456                          */
1457                         lpfc_more_plogi(phba);
1458
1459                         if (phba->num_disc_nodes == 0) {
1460                                 phba->fc_flag &= ~FC_NDISC_ACTIVE;
1461                                 lpfc_can_disctmo(phba);
1462                                 if (phba->fc_flag & FC_RSCN_MODE) {
1463                                         /*
1464                                          * Check to see if more RSCNs
1465                                          * came in while we were
1466                                          * processing this one.
1467                                          */
1468                                         if((phba->fc_rscn_id_cnt==0) &&
1469                                          !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
1470                                                 phba->fc_flag &= ~FC_RSCN_MODE;
1471                                         }
1472                                         else {
1473                                                 lpfc_els_handle_rscn(phba);
1474                                         }
1475                                 }
1476                         }
1477                 }
1478         }
1479         return;
1480 }
1481
1482 void
1483 lpfc_els_retry_delay(unsigned long ptr)
1484 {
1485         struct lpfc_nodelist *ndlp;
1486         struct lpfc_hba *phba;
1487         unsigned long iflag;
1488         struct lpfc_work_evt  *evtp;
1489
1490         ndlp = (struct lpfc_nodelist *)ptr;
1491         phba = ndlp->nlp_phba;
1492         evtp = &ndlp->els_retry_evt;
1493
1494         spin_lock_irqsave(phba->host->host_lock, iflag);
1495         if (!list_empty(&evtp->evt_listp)) {
1496                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1497                 return;
1498         }
1499
1500         evtp->evt_arg1  = ndlp;
1501         evtp->evt       = LPFC_EVT_ELS_RETRY;
1502         list_add_tail(&evtp->evt_listp, &phba->work_list);
1503         if (phba->work_wait)
1504                 wake_up(phba->work_wait);
1505
1506         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1507         return;
1508 }
1509
1510 void
1511 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
1512 {
1513         struct lpfc_hba *phba;
1514         uint32_t cmd;
1515         uint32_t did;
1516         uint8_t retry;
1517
1518         phba = ndlp->nlp_phba;
1519         spin_lock_irq(phba->host->host_lock);
1520         did = ndlp->nlp_DID;
1521         cmd = ndlp->nlp_last_elscmd;
1522         ndlp->nlp_last_elscmd = 0;
1523
1524         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1525                 spin_unlock_irq(phba->host->host_lock);
1526                 return;
1527         }
1528
1529         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1530         spin_unlock_irq(phba->host->host_lock);
1531         /*
1532          * If a discovery event readded nlp_delayfunc after timer
1533          * firing and before processing the timer, cancel the
1534          * nlp_delayfunc.
1535          */
1536         del_timer_sync(&ndlp->nlp_delayfunc);
1537         retry = ndlp->nlp_retry;
1538
1539         switch (cmd) {
1540         case ELS_CMD_FLOGI:
1541                 lpfc_issue_els_flogi(phba, ndlp, retry);
1542                 break;
1543         case ELS_CMD_PLOGI:
1544                 if(!lpfc_issue_els_plogi(phba, ndlp->nlp_DID, retry)) {
1545                         ndlp->nlp_prev_state = ndlp->nlp_state;
1546                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1547                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1548                 }
1549                 break;
1550         case ELS_CMD_ADISC:
1551                 if (!lpfc_issue_els_adisc(phba, ndlp, retry)) {
1552                         ndlp->nlp_prev_state = ndlp->nlp_state;
1553                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1554                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1555                 }
1556                 break;
1557         case ELS_CMD_PRLI:
1558                 if (!lpfc_issue_els_prli(phba, ndlp, retry)) {
1559                         ndlp->nlp_prev_state = ndlp->nlp_state;
1560                         ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1561                         lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1562                 }
1563                 break;
1564         case ELS_CMD_LOGO:
1565                 if (!lpfc_issue_els_logo(phba, ndlp, retry)) {
1566                         ndlp->nlp_prev_state = ndlp->nlp_state;
1567                         ndlp->nlp_state = NLP_STE_NPR_NODE;
1568                         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1569                 }
1570                 break;
1571         }
1572         return;
1573 }
1574
1575 static int
1576 lpfc_els_retry(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1577                struct lpfc_iocbq * rspiocb)
1578 {
1579         IOCB_t *irsp;
1580         struct lpfc_dmabuf *pcmd;
1581         struct lpfc_nodelist *ndlp;
1582         uint32_t *elscmd;
1583         struct ls_rjt stat;
1584         int retry, maxretry;
1585         int delay;
1586         uint32_t cmd;
1587         uint32_t did;
1588
1589         retry = 0;
1590         delay = 0;
1591         maxretry = lpfc_max_els_tries;
1592         irsp = &rspiocb->iocb;
1593         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1594         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1595         cmd = 0;
1596
1597         /* Note: context2 may be 0 for internal driver abort
1598          * of delays ELS command.
1599          */
1600
1601         if (pcmd && pcmd->virt) {
1602                 elscmd = (uint32_t *) (pcmd->virt);
1603                 cmd = *elscmd++;
1604         }
1605
1606         if(ndlp)
1607                 did = ndlp->nlp_DID;
1608         else {
1609                 /* We should only hit this case for retrying PLOGI */
1610                 did = irsp->un.elsreq64.remoteID;
1611                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
1612                 if (!ndlp && (cmd != ELS_CMD_PLOGI))
1613                         return 1;
1614         }
1615
1616         switch (irsp->ulpStatus) {
1617         case IOSTAT_FCP_RSP_ERROR:
1618         case IOSTAT_REMOTE_STOP:
1619                 break;
1620
1621         case IOSTAT_LOCAL_REJECT:
1622                 switch ((irsp->un.ulpWord[4] & 0xff)) {
1623                 case IOERR_LOOP_OPEN_FAILURE:
1624                         if (cmd == ELS_CMD_PLOGI) {
1625                                 if (cmdiocb->retry == 0) {
1626                                         delay = 1;
1627                                 }
1628                         }
1629                         retry = 1;
1630                         break;
1631
1632                 case IOERR_SEQUENCE_TIMEOUT:
1633                         retry = 1;
1634                         break;
1635
1636                 case IOERR_NO_RESOURCES:
1637                         if (cmd == ELS_CMD_PLOGI) {
1638                                 delay = 1;
1639                         }
1640                         retry = 1;
1641                         break;
1642
1643                 case IOERR_INVALID_RPI:
1644                         retry = 1;
1645                         break;
1646                 }
1647                 break;
1648
1649         case IOSTAT_NPORT_RJT:
1650         case IOSTAT_FABRIC_RJT:
1651                 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
1652                         retry = 1;
1653                         break;
1654                 }
1655                 break;
1656
1657         case IOSTAT_NPORT_BSY:
1658         case IOSTAT_FABRIC_BSY:
1659                 retry = 1;
1660                 break;
1661
1662         case IOSTAT_LS_RJT:
1663                 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
1664                 /* Added for Vendor specifc support
1665                  * Just keep retrying for these Rsn / Exp codes
1666                  */
1667                 switch (stat.un.b.lsRjtRsnCode) {
1668                 case LSRJT_UNABLE_TPC:
1669                         if (stat.un.b.lsRjtRsnCodeExp ==
1670                             LSEXP_CMD_IN_PROGRESS) {
1671                                 if (cmd == ELS_CMD_PLOGI) {
1672                                         delay = 1;
1673                                         maxretry = 48;
1674                                 }
1675                                 retry = 1;
1676                                 break;
1677                         }
1678                         if (cmd == ELS_CMD_PLOGI) {
1679                                 delay = 1;
1680                                 maxretry = lpfc_max_els_tries + 1;
1681                                 retry = 1;
1682                                 break;
1683                         }
1684                         break;
1685
1686                 case LSRJT_LOGICAL_BSY:
1687                         if (cmd == ELS_CMD_PLOGI) {
1688                                 delay = 1;
1689                                 maxretry = 48;
1690                         }
1691                         retry = 1;
1692                         break;
1693                 }
1694                 break;
1695
1696         case IOSTAT_INTERMED_RSP:
1697         case IOSTAT_BA_RJT:
1698                 break;
1699
1700         default:
1701                 break;
1702         }
1703
1704         if (did == FDMI_DID)
1705                 retry = 1;
1706
1707         if ((++cmdiocb->retry) >= maxretry) {
1708                 phba->fc_stat.elsRetryExceeded++;
1709                 retry = 0;
1710         }
1711
1712         if (retry) {
1713
1714                 /* Retry ELS command <elsCmd> to remote NPORT <did> */
1715                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1716                                 "%d:0107 Retry ELS command x%x to remote "
1717                                 "NPORT x%x Data: x%x x%x\n",
1718                                 phba->brd_no,
1719                                 cmd, did, cmdiocb->retry, delay);
1720
1721                 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) {
1722                         /* If discovery / RSCN timer is running, reset it */
1723                         if (timer_pending(&phba->fc_disctmo) ||
1724                               (phba->fc_flag & FC_RSCN_MODE)) {
1725                                 lpfc_set_disctmo(phba);
1726                         }
1727                 }
1728
1729                 phba->fc_stat.elsXmitRetry++;
1730                 if (ndlp && delay) {
1731                         phba->fc_stat.elsDelayRetry++;
1732                         ndlp->nlp_retry = cmdiocb->retry;
1733
1734                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1735                         ndlp->nlp_flag |= NLP_DELAY_TMO;
1736
1737                         ndlp->nlp_prev_state = ndlp->nlp_state;
1738                         ndlp->nlp_state = NLP_STE_NPR_NODE;
1739                         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1740                         ndlp->nlp_last_elscmd = cmd;
1741
1742                         return 1;
1743                 }
1744                 switch (cmd) {
1745                 case ELS_CMD_FLOGI:
1746                         lpfc_issue_els_flogi(phba, ndlp, cmdiocb->retry);
1747                         return 1;
1748                 case ELS_CMD_PLOGI:
1749                         if (ndlp) {
1750                                 ndlp->nlp_prev_state = ndlp->nlp_state;
1751                                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1752                                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1753                         }
1754                         lpfc_issue_els_plogi(phba, did, cmdiocb->retry);
1755                         return 1;
1756                 case ELS_CMD_ADISC:
1757                         ndlp->nlp_prev_state = ndlp->nlp_state;
1758                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1759                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1760                         lpfc_issue_els_adisc(phba, ndlp, cmdiocb->retry);
1761                         return 1;
1762                 case ELS_CMD_PRLI:
1763                         ndlp->nlp_prev_state = ndlp->nlp_state;
1764                         ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1765                         lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1766                         lpfc_issue_els_prli(phba, ndlp, cmdiocb->retry);
1767                         return 1;
1768                 case ELS_CMD_LOGO:
1769                         ndlp->nlp_prev_state = ndlp->nlp_state;
1770                         ndlp->nlp_state = NLP_STE_NPR_NODE;
1771                         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1772                         lpfc_issue_els_logo(phba, ndlp, cmdiocb->retry);
1773                         return 1;
1774                 }
1775         }
1776
1777         /* No retry ELS command <elsCmd> to remote NPORT <did> */
1778         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1779                         "%d:0108 No retry ELS command x%x to remote NPORT x%x "
1780                         "Data: x%x\n",
1781                         phba->brd_no,
1782                         cmd, did, cmdiocb->retry);
1783
1784         return 0;
1785 }
1786
1787 int
1788 lpfc_els_free_iocb(struct lpfc_hba * phba, struct lpfc_iocbq * elsiocb)
1789 {
1790         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
1791
1792         /* context2  = cmd,  context2->next = rsp, context3 = bpl */
1793         if (elsiocb->context2) {
1794                 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
1795                 /* Free the response before processing the command.  */
1796                 if (!list_empty(&buf_ptr1->list)) {
1797                         list_remove_head(&buf_ptr1->list, buf_ptr,
1798                                          struct lpfc_dmabuf,
1799                                          list);
1800                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1801                         kfree(buf_ptr);
1802                 }
1803                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
1804                 kfree(buf_ptr1);
1805         }
1806
1807         if (elsiocb->context3) {
1808                 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
1809                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1810                 kfree(buf_ptr);
1811         }
1812         spin_lock_irq(phba->host->host_lock);
1813         lpfc_sli_release_iocbq(phba, elsiocb);
1814         spin_unlock_irq(phba->host->host_lock);
1815         return 0;
1816 }
1817
1818 static void
1819 lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1820                        struct lpfc_iocbq * rspiocb)
1821 {
1822         struct lpfc_nodelist *ndlp;
1823
1824         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1825
1826         /* ACC to LOGO completes to NPort <nlp_DID> */
1827         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1828                         "%d:0109 ACC to LOGO completes to NPort x%x "
1829                         "Data: x%x x%x x%x\n",
1830                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
1831                         ndlp->nlp_state, ndlp->nlp_rpi);
1832
1833         switch (ndlp->nlp_state) {
1834         case NLP_STE_UNUSED_NODE:       /* node is just allocated */
1835                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1836                 break;
1837         case NLP_STE_NPR_NODE:          /* NPort Recovery mode */
1838                 lpfc_unreg_rpi(phba, ndlp);
1839                 break;
1840         default:
1841                 break;
1842         }
1843         lpfc_els_free_iocb(phba, cmdiocb);
1844         return;
1845 }
1846
1847 static void
1848 lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
1849                   struct lpfc_iocbq * rspiocb)
1850 {
1851         struct lpfc_nodelist *ndlp;
1852         LPFC_MBOXQ_t *mbox = NULL;
1853
1854         ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1855         if (cmdiocb->context_un.mbox)
1856                 mbox = cmdiocb->context_un.mbox;
1857
1858
1859         /* Check to see if link went down during discovery */
1860         if ((lpfc_els_chk_latt(phba)) || !ndlp) {
1861                 if (mbox) {
1862                         mempool_free( mbox, phba->mbox_mem_pool);
1863                 }
1864                 goto out;
1865         }
1866
1867         /* ELS response tag <ulpIoTag> completes */
1868         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1869                         "%d:0110 ELS response tag x%x completes "
1870                         "Data: x%x x%x x%x x%x x%x x%x x%x\n",
1871                         phba->brd_no,
1872                         cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
1873                         rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
1874                         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
1875                         ndlp->nlp_rpi);
1876
1877         if (mbox) {
1878                 if ((rspiocb->iocb.ulpStatus == 0)
1879                     && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
1880                         lpfc_unreg_rpi(phba, ndlp);
1881                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1882                         mbox->context2 = ndlp;
1883                         ndlp->nlp_prev_state = ndlp->nlp_state;
1884                         ndlp->nlp_state = NLP_STE_REG_LOGIN_ISSUE;
1885                         lpfc_nlp_list(phba, ndlp, NLP_REGLOGIN_LIST);
1886                         if (lpfc_sli_issue_mbox(phba, mbox,
1887                                                 (MBX_NOWAIT | MBX_STOP_IOCB))
1888                             != MBX_NOT_FINISHED) {
1889                                 goto out;
1890                         }
1891                         /* NOTE: we should have messages for unsuccessful
1892                            reglogin */
1893                         mempool_free( mbox, phba->mbox_mem_pool);
1894                 } else {
1895                         mempool_free( mbox, phba->mbox_mem_pool);
1896                         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1897                                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1898                                 ndlp = NULL;
1899                         }
1900                 }
1901         }
1902 out:
1903         if (ndlp) {
1904                 spin_lock_irq(phba->host->host_lock);
1905                 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
1906                 spin_unlock_irq(phba->host->host_lock);
1907         }
1908         lpfc_els_free_iocb(phba, cmdiocb);
1909         return;
1910 }
1911
1912 int
1913 lpfc_els_rsp_acc(struct lpfc_hba * phba, uint32_t flag,
1914                  struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp,
1915                  LPFC_MBOXQ_t * mbox, uint8_t newnode)
1916 {
1917         IOCB_t *icmd;
1918         IOCB_t *oldcmd;
1919         struct lpfc_iocbq *elsiocb;
1920         struct lpfc_sli_ring *pring;
1921         struct lpfc_sli *psli;
1922         uint8_t *pcmd;
1923         uint16_t cmdsize;
1924         int rc;
1925         ELS_PKT *els_pkt_ptr;
1926
1927         psli = &phba->sli;
1928         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
1929         oldcmd = &oldiocb->iocb;
1930
1931         switch (flag) {
1932         case ELS_CMD_ACC:
1933                 cmdsize = sizeof (uint32_t);
1934                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1935                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
1936                 if (!elsiocb) {
1937                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
1938                         return 1;
1939                 }
1940                 icmd = &elsiocb->iocb;
1941                 icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1942                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1943                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
1944                 pcmd += sizeof (uint32_t);
1945                 break;
1946         case ELS_CMD_PLOGI:
1947                 cmdsize = (sizeof (struct serv_parm) + sizeof (uint32_t));
1948                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1949                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
1950                 if (!elsiocb)
1951                         return 1;
1952
1953                 icmd = &elsiocb->iocb;
1954                 icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
1955                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1956
1957                 if (mbox)
1958                         elsiocb->context_un.mbox = mbox;
1959
1960                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
1961                 pcmd += sizeof (uint32_t);
1962                 memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
1963                 break;
1964         case ELS_CMD_PRLO:
1965                 cmdsize = sizeof (uint32_t) + sizeof (PRLO);
1966                 elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
1967                                              ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
1968                 if (!elsiocb)
1969                         return 1;
1970
1971                 icmd = &elsiocb->iocb;
1972                 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
1973                 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1974
1975                 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
1976                        sizeof (uint32_t) + sizeof (PRLO));
1977                 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
1978                 els_pkt_ptr = (ELS_PKT *) pcmd;
1979                 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
1980                 break;
1981         default:
1982                 return 1;
1983         }
1984
1985         if (newnode)
1986                 elsiocb->context1 = NULL;
1987
1988         /* Xmit ELS ACC response tag <ulpIoTag> */
1989         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1990                         "%d:0128 Xmit ELS ACC response tag x%x "
1991                         "Data: x%x x%x x%x x%x x%x\n",
1992                         phba->brd_no,
1993                         elsiocb->iocb.ulpIoTag,
1994                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
1995                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
1996
1997         if (ndlp->nlp_flag & NLP_LOGO_ACC) {
1998                 spin_lock_irq(phba->host->host_lock);
1999                 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
2000                 spin_unlock_irq(phba->host->host_lock);
2001                 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
2002         } else {
2003                 elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2004         }
2005
2006         phba->fc_stat.elsXmitACC++;
2007         spin_lock_irq(phba->host->host_lock);
2008         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2009         spin_unlock_irq(phba->host->host_lock);
2010         if (rc == IOCB_ERROR) {
2011                 lpfc_els_free_iocb(phba, elsiocb);
2012                 return 1;
2013         }
2014         return 0;
2015 }
2016
2017 int
2018 lpfc_els_rsp_reject(struct lpfc_hba * phba, uint32_t rejectError,
2019                     struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2020 {
2021         IOCB_t *icmd;
2022         IOCB_t *oldcmd;
2023         struct lpfc_iocbq *elsiocb;
2024         struct lpfc_sli_ring *pring;
2025         struct lpfc_sli *psli;
2026         uint8_t *pcmd;
2027         uint16_t cmdsize;
2028         int rc;
2029
2030         psli = &phba->sli;
2031         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2032
2033         cmdsize = 2 * sizeof (uint32_t);
2034         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2035                                         ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
2036         if (!elsiocb)
2037                 return 1;
2038
2039         icmd = &elsiocb->iocb;
2040         oldcmd = &oldiocb->iocb;
2041         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2042         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2043
2044         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
2045         pcmd += sizeof (uint32_t);
2046         *((uint32_t *) (pcmd)) = rejectError;
2047
2048         /* Xmit ELS RJT <err> response tag <ulpIoTag> */
2049         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2050                         "%d:0129 Xmit ELS RJT x%x response tag x%x "
2051                         "Data: x%x x%x x%x x%x x%x\n",
2052                         phba->brd_no,
2053                         rejectError, elsiocb->iocb.ulpIoTag,
2054                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2055                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2056
2057         phba->fc_stat.elsXmitLSRJT++;
2058         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2059         spin_lock_irq(phba->host->host_lock);
2060         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2061         spin_unlock_irq(phba->host->host_lock);
2062         if (rc == IOCB_ERROR) {
2063                 lpfc_els_free_iocb(phba, elsiocb);
2064                 return 1;
2065         }
2066         return 0;
2067 }
2068
2069 int
2070 lpfc_els_rsp_adisc_acc(struct lpfc_hba * phba,
2071                        struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2072 {
2073         ADISC *ap;
2074         IOCB_t *icmd;
2075         IOCB_t *oldcmd;
2076         struct lpfc_iocbq *elsiocb;
2077         struct lpfc_sli_ring *pring;
2078         struct lpfc_sli *psli;
2079         uint8_t *pcmd;
2080         uint16_t cmdsize;
2081         int rc;
2082
2083         psli = &phba->sli;
2084         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2085
2086         cmdsize = sizeof (uint32_t) + sizeof (ADISC);
2087         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2088                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2089         if (!elsiocb)
2090                 return 1;
2091
2092         /* Xmit ADISC ACC response tag <ulpIoTag> */
2093         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2094                         "%d:0130 Xmit ADISC ACC response tag x%x "
2095                         "Data: x%x x%x x%x x%x x%x\n",
2096                         phba->brd_no,
2097                         elsiocb->iocb.ulpIoTag,
2098                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2099                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2100
2101         icmd = &elsiocb->iocb;
2102         oldcmd = &oldiocb->iocb;
2103         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2104         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2105
2106         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2107         pcmd += sizeof (uint32_t);
2108
2109         ap = (ADISC *) (pcmd);
2110         ap->hardAL_PA = phba->fc_pref_ALPA;
2111         memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
2112         memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
2113         ap->DID = be32_to_cpu(phba->fc_myDID);
2114
2115         phba->fc_stat.elsXmitACC++;
2116         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2117         spin_lock_irq(phba->host->host_lock);
2118         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2119         spin_unlock_irq(phba->host->host_lock);
2120         if (rc == IOCB_ERROR) {
2121                 lpfc_els_free_iocb(phba, elsiocb);
2122                 return 1;
2123         }
2124         return 0;
2125 }
2126
2127 int
2128 lpfc_els_rsp_prli_acc(struct lpfc_hba * phba,
2129                       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2130 {
2131         PRLI *npr;
2132         lpfc_vpd_t *vpd;
2133         IOCB_t *icmd;
2134         IOCB_t *oldcmd;
2135         struct lpfc_iocbq *elsiocb;
2136         struct lpfc_sli_ring *pring;
2137         struct lpfc_sli *psli;
2138         uint8_t *pcmd;
2139         uint16_t cmdsize;
2140         int rc;
2141
2142         psli = &phba->sli;
2143         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2144
2145         cmdsize = sizeof (uint32_t) + sizeof (PRLI);
2146         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, ndlp,
2147                 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
2148         if (!elsiocb)
2149                 return 1;
2150
2151         /* Xmit PRLI ACC response tag <ulpIoTag> */
2152         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2153                         "%d:0131 Xmit PRLI ACC response tag x%x "
2154                         "Data: x%x x%x x%x x%x x%x\n",
2155                         phba->brd_no,
2156                         elsiocb->iocb.ulpIoTag,
2157                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2158                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2159
2160         icmd = &elsiocb->iocb;
2161         oldcmd = &oldiocb->iocb;
2162         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2163         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2164
2165         *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
2166         pcmd += sizeof (uint32_t);
2167
2168         /* For PRLI, remainder of payload is PRLI parameter page */
2169         memset(pcmd, 0, sizeof (PRLI));
2170
2171         npr = (PRLI *) pcmd;
2172         vpd = &phba->vpd;
2173         /*
2174          * If our firmware version is 3.20 or later,
2175          * set the following bits for FC-TAPE support.
2176          */
2177         if (vpd->rev.feaLevelHigh >= 0x02) {
2178                 npr->ConfmComplAllowed = 1;
2179                 npr->Retry = 1;
2180                 npr->TaskRetryIdReq = 1;
2181         }
2182
2183         npr->acceptRspCode = PRLI_REQ_EXECUTED;
2184         npr->estabImagePair = 1;
2185         npr->readXferRdyDis = 1;
2186         npr->ConfmComplAllowed = 1;
2187
2188         npr->prliType = PRLI_FCP_TYPE;
2189         npr->initiatorFunc = 1;
2190
2191         phba->fc_stat.elsXmitACC++;
2192         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2193
2194         spin_lock_irq(phba->host->host_lock);
2195         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2196         spin_unlock_irq(phba->host->host_lock);
2197         if (rc == IOCB_ERROR) {
2198                 lpfc_els_free_iocb(phba, elsiocb);
2199                 return 1;
2200         }
2201         return 0;
2202 }
2203
2204 static int
2205 lpfc_els_rsp_rnid_acc(struct lpfc_hba * phba,
2206                       uint8_t format,
2207                       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2208 {
2209         RNID *rn;
2210         IOCB_t *icmd;
2211         IOCB_t *oldcmd;
2212         struct lpfc_iocbq *elsiocb;
2213         struct lpfc_sli_ring *pring;
2214         struct lpfc_sli *psli;
2215         uint8_t *pcmd;
2216         uint16_t cmdsize;
2217         int rc;
2218
2219         psli = &phba->sli;
2220         pring = &psli->ring[LPFC_ELS_RING];
2221
2222         cmdsize = sizeof (uint32_t) + sizeof (uint32_t)
2223                 + (2 * sizeof (struct lpfc_name));
2224         if (format)
2225                 cmdsize += sizeof (RNID_TOP_DISC);
2226
2227         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2228                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2229         if (!elsiocb)
2230                 return 1;
2231
2232         /* Xmit RNID ACC response tag <ulpIoTag> */
2233         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2234                         "%d:0132 Xmit RNID ACC response tag x%x "
2235                         "Data: x%x\n",
2236                         phba->brd_no,
2237                         elsiocb->iocb.ulpIoTag,
2238                         elsiocb->iocb.ulpContext);
2239
2240         icmd = &elsiocb->iocb;
2241         oldcmd = &oldiocb->iocb;
2242         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2243         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2244
2245         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2246         pcmd += sizeof (uint32_t);
2247
2248         memset(pcmd, 0, sizeof (RNID));
2249         rn = (RNID *) (pcmd);
2250         rn->Format = format;
2251         rn->CommonLen = (2 * sizeof (struct lpfc_name));
2252         memcpy(&rn->portName, &phba->fc_portname, sizeof (struct lpfc_name));
2253         memcpy(&rn->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
2254         switch (format) {
2255         case 0:
2256                 rn->SpecificLen = 0;
2257                 break;
2258         case RNID_TOPOLOGY_DISC:
2259                 rn->SpecificLen = sizeof (RNID_TOP_DISC);
2260                 memcpy(&rn->un.topologyDisc.portName,
2261                        &phba->fc_portname, sizeof (struct lpfc_name));
2262                 rn->un.topologyDisc.unitType = RNID_HBA;
2263                 rn->un.topologyDisc.physPort = 0;
2264                 rn->un.topologyDisc.attachedNodes = 0;
2265                 break;
2266         default:
2267                 rn->CommonLen = 0;
2268                 rn->SpecificLen = 0;
2269                 break;
2270         }
2271
2272         phba->fc_stat.elsXmitACC++;
2273         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2274         elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
2275                                     * it could be freed */
2276
2277         spin_lock_irq(phba->host->host_lock);
2278         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
2279         spin_unlock_irq(phba->host->host_lock);
2280         if (rc == IOCB_ERROR) {
2281                 lpfc_els_free_iocb(phba, elsiocb);
2282                 return 1;
2283         }
2284         return 0;
2285 }
2286
2287 int
2288 lpfc_els_disc_adisc(struct lpfc_hba * phba)
2289 {
2290         int sentadisc;
2291         struct lpfc_nodelist *ndlp, *next_ndlp;
2292
2293         sentadisc = 0;
2294         /* go thru NPR list and issue any remaining ELS ADISCs */
2295         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2296                         nlp_listp) {
2297                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2298                         if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2299                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2300                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2301                                 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
2302                                 lpfc_nlp_list(phba, ndlp,
2303                                         NLP_ADISC_LIST);
2304                                 lpfc_issue_els_adisc(phba, ndlp, 0);
2305                                 sentadisc++;
2306                                 phba->num_disc_nodes++;
2307                                 if (phba->num_disc_nodes >=
2308                                     phba->cfg_discovery_threads) {
2309                                         spin_lock_irq(phba->host->host_lock);
2310                                         phba->fc_flag |= FC_NLP_MORE;
2311                                         spin_unlock_irq(phba->host->host_lock);
2312                                         break;
2313                                 }
2314                         }
2315                 }
2316         }
2317         if (sentadisc == 0) {
2318                 spin_lock_irq(phba->host->host_lock);
2319                 phba->fc_flag &= ~FC_NLP_MORE;
2320                 spin_unlock_irq(phba->host->host_lock);
2321         }
2322         return sentadisc;
2323 }
2324
2325 int
2326 lpfc_els_disc_plogi(struct lpfc_hba * phba)
2327 {
2328         int sentplogi;
2329         struct lpfc_nodelist *ndlp, *next_ndlp;
2330
2331         sentplogi = 0;
2332         /* go thru NPR list and issue any remaining ELS PLOGIs */
2333         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2334                                 nlp_listp) {
2335                 if ((ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
2336                    (!(ndlp->nlp_flag & NLP_DELAY_TMO))) {
2337                         if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2338                                 ndlp->nlp_prev_state = ndlp->nlp_state;
2339                                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
2340                                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
2341                                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
2342                                 sentplogi++;
2343                                 phba->num_disc_nodes++;
2344                                 if (phba->num_disc_nodes >=
2345                                     phba->cfg_discovery_threads) {
2346                                         spin_lock_irq(phba->host->host_lock);
2347                                         phba->fc_flag |= FC_NLP_MORE;
2348                                         spin_unlock_irq(phba->host->host_lock);
2349                                         break;
2350                                 }
2351                         }
2352                 }
2353         }
2354         if (sentplogi == 0) {
2355                 spin_lock_irq(phba->host->host_lock);
2356                 phba->fc_flag &= ~FC_NLP_MORE;
2357                 spin_unlock_irq(phba->host->host_lock);
2358         }
2359         return sentplogi;
2360 }
2361
2362 int
2363 lpfc_els_flush_rscn(struct lpfc_hba * phba)
2364 {
2365         struct lpfc_dmabuf *mp;
2366         int i;
2367
2368         for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
2369                 mp = phba->fc_rscn_id_list[i];
2370                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2371                 kfree(mp);
2372                 phba->fc_rscn_id_list[i] = NULL;
2373         }
2374         phba->fc_rscn_id_cnt = 0;
2375         spin_lock_irq(phba->host->host_lock);
2376         phba->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
2377         spin_unlock_irq(phba->host->host_lock);
2378         lpfc_can_disctmo(phba);
2379         return 0;
2380 }
2381
2382 int
2383 lpfc_rscn_payload_check(struct lpfc_hba * phba, uint32_t did)
2384 {
2385         D_ID ns_did;
2386         D_ID rscn_did;
2387         struct lpfc_dmabuf *mp;
2388         uint32_t *lp;
2389         uint32_t payload_len, cmd, i, match;
2390
2391         ns_did.un.word = did;
2392         match = 0;
2393
2394         /* Never match fabric nodes for RSCNs */
2395         if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
2396                 return(0);
2397
2398         /* If we are doing a FULL RSCN rediscovery, match everything */
2399         if (phba->fc_flag & FC_RSCN_DISCOVERY) {
2400                 return did;
2401         }
2402
2403         for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
2404                 mp = phba->fc_rscn_id_list[i];
2405                 lp = (uint32_t *) mp->virt;
2406                 cmd = *lp++;
2407                 payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */
2408                 payload_len -= sizeof (uint32_t);       /* take off word 0 */
2409                 while (payload_len) {
2410                         rscn_did.un.word = *lp++;
2411                         rscn_did.un.word = be32_to_cpu(rscn_did.un.word);
2412                         payload_len -= sizeof (uint32_t);
2413                         switch (rscn_did.un.b.resv) {
2414                         case 0: /* Single N_Port ID effected */
2415                                 if (ns_did.un.word == rscn_did.un.word) {
2416                                         match = did;
2417                                 }
2418                                 break;
2419                         case 1: /* Whole N_Port Area effected */
2420                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
2421                                     && (ns_did.un.b.area == rscn_did.un.b.area))
2422                                         {
2423                                                 match = did;
2424                                         }
2425                                 break;
2426                         case 2: /* Whole N_Port Domain effected */
2427                                 if (ns_did.un.b.domain == rscn_did.un.b.domain)
2428                                         {
2429                                                 match = did;
2430                                         }
2431                                 break;
2432                         case 3: /* Whole Fabric effected */
2433                                 match = did;
2434                                 break;
2435                         default:
2436                                 /* Unknown Identifier in RSCN list */
2437                                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2438                                                 "%d:0217 Unknown Identifier in "
2439                                                 "RSCN payload Data: x%x\n",
2440                                                 phba->brd_no, rscn_did.un.word);
2441                                 break;
2442                         }
2443                         if (match) {
2444                                 break;
2445                         }
2446                 }
2447         }
2448         return match;
2449 }
2450
2451 static int
2452 lpfc_rscn_recovery_check(struct lpfc_hba * phba)
2453 {
2454         struct lpfc_nodelist *ndlp = NULL, *next_ndlp;
2455         struct list_head *listp;
2456         struct list_head *node_list[7];
2457         int i;
2458
2459         /* Look at all nodes effected by pending RSCNs and move
2460          * them to NPR list.
2461          */
2462         node_list[0] = &phba->fc_npr_list;  /* MUST do this list first */
2463         node_list[1] = &phba->fc_nlpmap_list;
2464         node_list[2] = &phba->fc_nlpunmap_list;
2465         node_list[3] = &phba->fc_prli_list;
2466         node_list[4] = &phba->fc_reglogin_list;
2467         node_list[5] = &phba->fc_adisc_list;
2468         node_list[6] = &phba->fc_plogi_list;
2469         for (i = 0; i < 7; i++) {
2470                 listp = node_list[i];
2471                 if (list_empty(listp))
2472                         continue;
2473
2474                 list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
2475                         if (!(lpfc_rscn_payload_check(phba, ndlp->nlp_DID)))
2476                                 continue;
2477
2478                         lpfc_disc_state_machine(phba, ndlp, NULL,
2479                                         NLP_EVT_DEVICE_RECOVERY);
2480
2481                         /* Make sure NLP_DELAY_TMO is NOT running
2482                          * after a device recovery event.
2483                          */
2484                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2485                                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
2486                 }
2487         }
2488         return 0;
2489 }
2490
2491 static int
2492 lpfc_els_rcv_rscn(struct lpfc_hba * phba,
2493                   struct lpfc_iocbq * cmdiocb,
2494                   struct lpfc_nodelist * ndlp, uint8_t newnode)
2495 {
2496         struct lpfc_dmabuf *pcmd;
2497         uint32_t *lp;
2498         IOCB_t *icmd;
2499         uint32_t payload_len, cmd;
2500
2501         icmd = &cmdiocb->iocb;
2502         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2503         lp = (uint32_t *) pcmd->virt;
2504
2505         cmd = *lp++;
2506         payload_len = be32_to_cpu(cmd) & 0xffff;        /* payload length */
2507         payload_len -= sizeof (uint32_t);       /* take off word 0 */
2508         cmd &= ELS_CMD_MASK;
2509
2510         /* RSCN received */
2511         lpfc_printf_log(phba,
2512                         KERN_INFO,
2513                         LOG_DISCOVERY,
2514                         "%d:0214 RSCN received Data: x%x x%x x%x x%x\n",
2515                         phba->brd_no,
2516                         phba->fc_flag, payload_len, *lp, phba->fc_rscn_id_cnt);
2517
2518         /* If we are about to begin discovery, just ACC the RSCN.
2519          * Discovery processing will satisfy it.
2520          */
2521         if (phba->hba_state <= LPFC_NS_QRY) {
2522                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
2523                                                                 newnode);
2524                 return 0;
2525         }
2526
2527         /* If we are already processing an RSCN, save the received
2528          * RSCN payload buffer, cmdiocb->context2 to process later.
2529          */
2530         if (phba->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
2531                 if ((phba->fc_rscn_id_cnt < FC_MAX_HOLD_RSCN) &&
2532                     !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
2533                         spin_lock_irq(phba->host->host_lock);
2534                         phba->fc_flag |= FC_RSCN_MODE;
2535                         spin_unlock_irq(phba->host->host_lock);
2536                         phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
2537
2538                         /* If we zero, cmdiocb->context2, the calling
2539                          * routine will not try to free it.
2540                          */
2541                         cmdiocb->context2 = NULL;
2542
2543                         /* Deferred RSCN */
2544                         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2545                                         "%d:0235 Deferred RSCN "
2546                                         "Data: x%x x%x x%x\n",
2547                                         phba->brd_no, phba->fc_rscn_id_cnt,
2548                                         phba->fc_flag, phba->hba_state);
2549                 } else {
2550                         spin_lock_irq(phba->host->host_lock);
2551                         phba->fc_flag |= FC_RSCN_DISCOVERY;
2552                         spin_unlock_irq(phba->host->host_lock);
2553                         /* ReDiscovery RSCN */
2554                         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2555                                         "%d:0234 ReDiscovery RSCN "
2556                                         "Data: x%x x%x x%x\n",
2557                                         phba->brd_no, phba->fc_rscn_id_cnt,
2558                                         phba->fc_flag, phba->hba_state);
2559                 }
2560                 /* Send back ACC */
2561                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
2562                                                                 newnode);
2563
2564                 /* send RECOVERY event for ALL nodes that match RSCN payload */
2565                 lpfc_rscn_recovery_check(phba);
2566                 return 0;
2567         }
2568
2569         phba->fc_flag |= FC_RSCN_MODE;
2570         phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
2571         /*
2572          * If we zero, cmdiocb->context2, the calling routine will
2573          * not try to free it.
2574          */
2575         cmdiocb->context2 = NULL;
2576
2577         lpfc_set_disctmo(phba);
2578
2579         /* Send back ACC */
2580         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, newnode);
2581
2582         /* send RECOVERY event for ALL nodes that match RSCN payload */
2583         lpfc_rscn_recovery_check(phba);
2584
2585         return lpfc_els_handle_rscn(phba);
2586 }
2587
2588 int
2589 lpfc_els_handle_rscn(struct lpfc_hba * phba)
2590 {
2591         struct lpfc_nodelist *ndlp;
2592
2593         /* Start timer for RSCN processing */
2594         lpfc_set_disctmo(phba);
2595
2596         /* RSCN processed */
2597         lpfc_printf_log(phba,
2598                         KERN_INFO,
2599                         LOG_DISCOVERY,
2600                         "%d:0215 RSCN processed Data: x%x x%x x%x x%x\n",
2601                         phba->brd_no,
2602                         phba->fc_flag, 0, phba->fc_rscn_id_cnt,
2603                         phba->hba_state);
2604
2605         /* To process RSCN, first compare RSCN data with NameServer */
2606         phba->fc_ns_retry = 0;
2607         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED, NameServer_DID);
2608         if (ndlp) {
2609                 /* Good ndlp, issue CT Request to NameServer */
2610                 if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT) == 0) {
2611                         /* Wait for NameServer query cmpl before we can
2612                            continue */
2613                         return 1;
2614                 }
2615         } else {
2616                 /* If login to NameServer does not exist, issue one */
2617                 /* Good status, issue PLOGI to NameServer */
2618                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
2619                 if (ndlp) {
2620                         /* Wait for NameServer login cmpl before we can
2621                            continue */
2622                         return 1;
2623                 }
2624                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2625                 if (!ndlp) {
2626                         lpfc_els_flush_rscn(phba);
2627                         return 0;
2628                 } else {
2629                         lpfc_nlp_init(phba, ndlp, NameServer_DID);
2630                         ndlp->nlp_type |= NLP_FABRIC;
2631                         ndlp->nlp_prev_state = ndlp->nlp_state;
2632                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
2633                         lpfc_issue_els_plogi(phba, NameServer_DID, 0);
2634                         /* Wait for NameServer login cmpl before we can
2635                            continue */
2636                         return 1;
2637                 }
2638         }
2639
2640         lpfc_els_flush_rscn(phba);
2641         return 0;
2642 }
2643
2644 static int
2645 lpfc_els_rcv_flogi(struct lpfc_hba * phba,
2646                    struct lpfc_iocbq * cmdiocb,
2647                    struct lpfc_nodelist * ndlp, uint8_t newnode)
2648 {
2649         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2650         uint32_t *lp = (uint32_t *) pcmd->virt;
2651         IOCB_t *icmd = &cmdiocb->iocb;
2652         struct serv_parm *sp;
2653         LPFC_MBOXQ_t *mbox;
2654         struct ls_rjt stat;
2655         uint32_t cmd, did;
2656         int rc;
2657
2658         cmd = *lp++;
2659         sp = (struct serv_parm *) lp;
2660
2661         /* FLOGI received */
2662
2663         lpfc_set_disctmo(phba);
2664
2665         if (phba->fc_topology == TOPOLOGY_LOOP) {
2666                 /* We should never receive a FLOGI in loop mode, ignore it */
2667                 did = icmd->un.elsreq64.remoteID;
2668
2669                 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
2670                    Loop Mode */
2671                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
2672                                 "%d:0113 An FLOGI ELS command x%x was received "
2673                                 "from DID x%x in Loop Mode\n",
2674                                 phba->brd_no, cmd, did);
2675                 return 1;
2676         }
2677
2678         did = Fabric_DID;
2679
2680         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3))) {
2681                 /* For a FLOGI we accept, then if our portname is greater
2682                  * then the remote portname we initiate Nport login.
2683                  */
2684
2685                 rc = memcmp(&phba->fc_portname, &sp->portName,
2686                             sizeof (struct lpfc_name));
2687
2688                 if (!rc) {
2689                         if ((mbox = mempool_alloc(phba->mbox_mem_pool,
2690                                                   GFP_KERNEL)) == 0) {
2691                                 return 1;
2692                         }
2693                         lpfc_linkdown(phba);
2694                         lpfc_init_link(phba, mbox,
2695                                        phba->cfg_topology,
2696                                        phba->cfg_link_speed);
2697                         mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2698                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2699                         rc = lpfc_sli_issue_mbox
2700                                 (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
2701                         if (rc == MBX_NOT_FINISHED) {
2702                                 mempool_free( mbox, phba->mbox_mem_pool);
2703                         }
2704                         return 1;
2705                 } else if (rc > 0) {    /* greater than */
2706                         spin_lock_irq(phba->host->host_lock);
2707                         phba->fc_flag |= FC_PT2PT_PLOGI;
2708                         spin_unlock_irq(phba->host->host_lock);
2709                 }
2710                 phba->fc_flag |= FC_PT2PT;
2711                 phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2712         } else {
2713                 /* Reject this request because invalid parameters */
2714                 stat.un.b.lsRjtRsvd0 = 0;
2715                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2716                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
2717                 stat.un.b.vendorUnique = 0;
2718                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2719                 return 1;
2720         }
2721
2722         /* Send back ACC */
2723         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, newnode);
2724
2725         return 0;
2726 }
2727
2728 static int
2729 lpfc_els_rcv_rnid(struct lpfc_hba * phba,
2730                   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
2731 {
2732         struct lpfc_dmabuf *pcmd;
2733         uint32_t *lp;
2734         IOCB_t *icmd;
2735         RNID *rn;
2736         struct ls_rjt stat;
2737         uint32_t cmd, did;
2738
2739         icmd = &cmdiocb->iocb;
2740         did = icmd->un.elsreq64.remoteID;
2741         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2742         lp = (uint32_t *) pcmd->virt;
2743
2744         cmd = *lp++;
2745         rn = (RNID *) lp;
2746
2747         /* RNID received */
2748
2749         switch (rn->Format) {
2750         case 0:
2751         case RNID_TOPOLOGY_DISC:
2752                 /* Send back ACC */
2753                 lpfc_els_rsp_rnid_acc(phba, rn->Format, cmdiocb, ndlp);
2754                 break;
2755         default:
2756                 /* Reject this request because format not supported */
2757                 stat.un.b.lsRjtRsvd0 = 0;
2758                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2759                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2760                 stat.un.b.vendorUnique = 0;
2761                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2762         }
2763         return 0;
2764 }
2765
2766 static int
2767 lpfc_els_rcv_lirr(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2768                  struct lpfc_nodelist * ndlp)
2769 {
2770         struct ls_rjt stat;
2771
2772         /* For now, unconditionally reject this command */
2773         stat.un.b.lsRjtRsvd0 = 0;
2774         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2775         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2776         stat.un.b.vendorUnique = 0;
2777         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2778         return 0;
2779 }
2780
2781 static void
2782 lpfc_els_rsp_rps_acc(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
2783 {
2784         struct lpfc_sli *psli;
2785         struct lpfc_sli_ring *pring;
2786         MAILBOX_t *mb;
2787         IOCB_t *icmd;
2788         RPS_RSP *rps_rsp;
2789         uint8_t *pcmd;
2790         struct lpfc_iocbq *elsiocb;
2791         struct lpfc_nodelist *ndlp;
2792         uint16_t xri, status;
2793         uint32_t cmdsize;
2794
2795         psli = &phba->sli;
2796         pring = &psli->ring[LPFC_ELS_RING];
2797         mb = &pmb->mb;
2798
2799         ndlp = (struct lpfc_nodelist *) pmb->context2;
2800         xri = (uint16_t) ((unsigned long)(pmb->context1));
2801         pmb->context1 = NULL;
2802         pmb->context2 = NULL;
2803
2804         if (mb->mbxStatus) {
2805                 mempool_free( pmb, phba->mbox_mem_pool);
2806                 return;
2807         }
2808
2809         cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
2810         mempool_free( pmb, phba->mbox_mem_pool);
2811         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, lpfc_max_els_tries, ndlp,
2812                                                 ndlp->nlp_DID, ELS_CMD_ACC);
2813         if (!elsiocb)
2814                 return;
2815
2816         icmd = &elsiocb->iocb;
2817         icmd->ulpContext = xri;
2818
2819         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2820         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2821         pcmd += sizeof (uint32_t); /* Skip past command */
2822         rps_rsp = (RPS_RSP *)pcmd;
2823
2824         if (phba->fc_topology != TOPOLOGY_LOOP)
2825                 status = 0x10;
2826         else
2827                 status = 0x8;
2828         if (phba->fc_flag & FC_FABRIC)
2829                 status |= 0x4;
2830
2831         rps_rsp->rsvd1 = 0;
2832         rps_rsp->portStatus = be16_to_cpu(status);
2833         rps_rsp->linkFailureCnt = be32_to_cpu(mb->un.varRdLnk.linkFailureCnt);
2834         rps_rsp->lossSyncCnt = be32_to_cpu(mb->un.varRdLnk.lossSyncCnt);
2835         rps_rsp->lossSignalCnt = be32_to_cpu(mb->un.varRdLnk.lossSignalCnt);
2836         rps_rsp->primSeqErrCnt = be32_to_cpu(mb->un.varRdLnk.primSeqErrCnt);
2837         rps_rsp->invalidXmitWord = be32_to_cpu(mb->un.varRdLnk.invalidXmitWord);
2838         rps_rsp->crcCnt = be32_to_cpu(mb->un.varRdLnk.crcCnt);
2839
2840         /* Xmit ELS RPS ACC response tag <ulpIoTag> */
2841         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2842                         "%d:0128 Xmit ELS RPS ACC response tag x%x "
2843                         "Data: x%x x%x x%x x%x x%x\n",
2844                         phba->brd_no,
2845                         elsiocb->iocb.ulpIoTag,
2846                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2847                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2848
2849         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2850         phba->fc_stat.elsXmitACC++;
2851         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2852                 lpfc_els_free_iocb(phba, elsiocb);
2853         }
2854         return;
2855 }
2856
2857 static int
2858 lpfc_els_rcv_rps(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2859                  struct lpfc_nodelist * ndlp)
2860 {
2861         uint32_t *lp;
2862         uint8_t flag;
2863         LPFC_MBOXQ_t *mbox;
2864         struct lpfc_dmabuf *pcmd;
2865         RPS *rps;
2866         struct ls_rjt stat;
2867
2868         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2869             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2870                 stat.un.b.lsRjtRsvd0 = 0;
2871                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2872                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2873                 stat.un.b.vendorUnique = 0;
2874                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2875         }
2876
2877         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2878         lp = (uint32_t *) pcmd->virt;
2879         flag = (be32_to_cpu(*lp++) & 0xf);
2880         rps = (RPS *) lp;
2881
2882         if ((flag == 0) ||
2883             ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
2884             ((flag == 2) && (memcmp(&rps->un.portName, &phba->fc_portname,
2885                            sizeof (struct lpfc_name)) == 0))) {
2886                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC))) {
2887                         lpfc_read_lnk_stat(phba, mbox);
2888                         mbox->context1 =
2889                             (void *)((unsigned long)cmdiocb->iocb.ulpContext);
2890                         mbox->context2 = ndlp;
2891                         mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
2892                         if (lpfc_sli_issue_mbox (phba, mbox,
2893                             (MBX_NOWAIT | MBX_STOP_IOCB)) != MBX_NOT_FINISHED) {
2894                                 /* Mbox completion will send ELS Response */
2895                                 return 0;
2896                         }
2897                         mempool_free(mbox, phba->mbox_mem_pool);
2898                 }
2899         }
2900         stat.un.b.lsRjtRsvd0 = 0;
2901         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2902         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2903         stat.un.b.vendorUnique = 0;
2904         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2905         return 0;
2906 }
2907
2908 static int
2909 lpfc_els_rsp_rpl_acc(struct lpfc_hba * phba, uint16_t cmdsize,
2910                  struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
2911 {
2912         IOCB_t *icmd;
2913         IOCB_t *oldcmd;
2914         RPL_RSP rpl_rsp;
2915         struct lpfc_iocbq *elsiocb;
2916         struct lpfc_sli_ring *pring;
2917         struct lpfc_sli *psli;
2918         uint8_t *pcmd;
2919
2920         psli = &phba->sli;
2921         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
2922
2923         elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
2924                                         ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
2925         if (!elsiocb)
2926                 return 1;
2927
2928         icmd = &elsiocb->iocb;
2929         oldcmd = &oldiocb->iocb;
2930         icmd->ulpContext = oldcmd->ulpContext;  /* Xri */
2931
2932         pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2933         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
2934         pcmd += sizeof (uint16_t);
2935         *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
2936         pcmd += sizeof(uint16_t);
2937
2938         /* Setup the RPL ACC payload */
2939         rpl_rsp.listLen = be32_to_cpu(1);
2940         rpl_rsp.index = 0;
2941         rpl_rsp.port_num_blk.portNum = 0;
2942         rpl_rsp.port_num_blk.portID = be32_to_cpu(phba->fc_myDID);
2943         memcpy(&rpl_rsp.port_num_blk.portName, &phba->fc_portname,
2944             sizeof(struct lpfc_name));
2945
2946         memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
2947
2948
2949         /* Xmit ELS RPL ACC response tag <ulpIoTag> */
2950         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2951                         "%d:0128 Xmit ELS RPL ACC response tag x%x "
2952                         "Data: x%x x%x x%x x%x x%x\n",
2953                         phba->brd_no,
2954                         elsiocb->iocb.ulpIoTag,
2955                         elsiocb->iocb.ulpContext, ndlp->nlp_DID,
2956                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
2957
2958         elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2959
2960         phba->fc_stat.elsXmitACC++;
2961         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2962                 lpfc_els_free_iocb(phba, elsiocb);
2963                 return 1;
2964         }
2965         return 0;
2966 }
2967
2968 static int
2969 lpfc_els_rcv_rpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2970                  struct lpfc_nodelist * ndlp)
2971 {
2972         struct lpfc_dmabuf *pcmd;
2973         uint32_t *lp;
2974         uint32_t maxsize;
2975         uint16_t cmdsize;
2976         RPL *rpl;
2977         struct ls_rjt stat;
2978
2979         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2980             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2981                 stat.un.b.lsRjtRsvd0 = 0;
2982                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2983                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
2984                 stat.un.b.vendorUnique = 0;
2985                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2986         }
2987
2988         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2989         lp = (uint32_t *) pcmd->virt;
2990         rpl = (RPL *) (lp + 1);
2991
2992         maxsize = be32_to_cpu(rpl->maxsize);
2993
2994         /* We support only one port */
2995         if ((rpl->index == 0) &&
2996             ((maxsize == 0) ||
2997              ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
2998                 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
2999         } else {
3000                 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
3001         }
3002         lpfc_els_rsp_rpl_acc(phba, cmdsize, cmdiocb, ndlp);
3003
3004         return 0;
3005 }
3006
3007 static int
3008 lpfc_els_rcv_farp(struct lpfc_hba * phba,
3009                   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
3010 {
3011         struct lpfc_dmabuf *pcmd;
3012         uint32_t *lp;
3013         IOCB_t *icmd;
3014         FARP *fp;
3015         uint32_t cmd, cnt, did;
3016
3017         icmd = &cmdiocb->iocb;
3018         did = icmd->un.elsreq64.remoteID;
3019         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3020         lp = (uint32_t *) pcmd->virt;
3021
3022         cmd = *lp++;
3023         fp = (FARP *) lp;
3024
3025         /* FARP-REQ received from DID <did> */
3026         lpfc_printf_log(phba,
3027                          KERN_INFO,
3028                          LOG_IP,
3029                          "%d:0601 FARP-REQ received from DID x%x\n",
3030                          phba->brd_no, did);
3031
3032         /* We will only support match on WWPN or WWNN */
3033         if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
3034                 return 0;
3035         }
3036
3037         cnt = 0;
3038         /* If this FARP command is searching for my portname */
3039         if (fp->Mflags & FARP_MATCH_PORT) {
3040                 if (memcmp(&fp->RportName, &phba->fc_portname,
3041                            sizeof (struct lpfc_name)) == 0)
3042                         cnt = 1;
3043         }
3044
3045         /* If this FARP command is searching for my nodename */
3046         if (fp->Mflags & FARP_MATCH_NODE) {
3047                 if (memcmp(&fp->RnodeName, &phba->fc_nodename,
3048                            sizeof (struct lpfc_name)) == 0)
3049                         cnt = 1;
3050         }
3051
3052         if (cnt) {
3053                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
3054                    (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
3055                         /* Log back into the node before sending the FARP. */
3056                         if (fp->Rflags & FARP_REQUEST_PLOGI) {
3057                                 ndlp->nlp_prev_state = ndlp->nlp_state;
3058                                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
3059                                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
3060                                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
3061                         }
3062
3063                         /* Send a FARP response to that node */
3064                         if (fp->Rflags & FARP_REQUEST_FARPR) {
3065                                 lpfc_issue_els_farpr(phba, did, 0);
3066                         }
3067                 }
3068         }
3069         return 0;
3070 }
3071
3072 static int
3073 lpfc_els_rcv_farpr(struct lpfc_hba * phba,
3074                    struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
3075 {
3076         struct lpfc_dmabuf *pcmd;
3077         uint32_t *lp;
3078         IOCB_t *icmd;
3079         uint32_t cmd, did;
3080
3081         icmd = &cmdiocb->iocb;
3082         did = icmd->un.elsreq64.remoteID;
3083         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3084         lp = (uint32_t *) pcmd->virt;
3085
3086         cmd = *lp++;
3087         /* FARP-RSP received from DID <did> */
3088         lpfc_printf_log(phba,
3089                          KERN_INFO,
3090                          LOG_IP,
3091                          "%d:0600 FARP-RSP received from DID x%x\n",
3092                          phba->brd_no, did);
3093
3094         /* ACCEPT the Farp resp request */
3095         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
3096
3097         return 0;
3098 }
3099
3100 static int
3101 lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
3102                  struct lpfc_nodelist * fan_ndlp)
3103 {
3104         struct lpfc_dmabuf *pcmd;
3105         uint32_t *lp;
3106         IOCB_t *icmd;
3107         uint32_t cmd, did;
3108         FAN *fp;
3109         struct lpfc_nodelist *ndlp, *next_ndlp;
3110
3111         /* FAN received */
3112         lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "%d:265 FAN received\n",
3113                                                                 phba->brd_no);
3114
3115         icmd = &cmdiocb->iocb;
3116         did = icmd->un.elsreq64.remoteID;
3117         pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
3118         lp = (uint32_t *)pcmd->virt;
3119
3120         cmd = *lp++;
3121         fp = (FAN *)lp;
3122
3123         /* FAN received; Fan does not have a reply sequence */
3124
3125         if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
3126                 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
3127                         sizeof(struct lpfc_name)) != 0) ||
3128                     (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
3129                         sizeof(struct lpfc_name)) != 0)) {
3130                         /*
3131                          * This node has switched fabrics.  FLOGI is required
3132                          * Clean up the old rpi's
3133                          */
3134
3135                         list_for_each_entry_safe(ndlp, next_ndlp,
3136                                 &phba->fc_npr_list, nlp_listp) {
3137
3138                                 if (ndlp->nlp_type & NLP_FABRIC) {
3139                                         /*
3140                                          * Clean up old Fabric, Nameserver and
3141                                          * other NLP_FABRIC logins
3142                                          */
3143                                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3144                                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3145                                         /* Fail outstanding I/O now since this
3146                                          * device is marked for PLOGI
3147                                          */
3148                                         lpfc_unreg_rpi(phba, ndlp);
3149                                 }
3150                         }
3151
3152                         phba->hba_state = LPFC_FLOGI;
3153                         lpfc_set_disctmo(phba);
3154                         lpfc_initial_flogi(phba);
3155                         return 0;
3156                 }
3157                 /* Discovery not needed,
3158                  * move the nodes to their original state.
3159                  */
3160                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
3161                         nlp_listp) {
3162
3163                         switch (ndlp->nlp_prev_state) {
3164                         case NLP_STE_UNMAPPED_NODE:
3165                                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3166                                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
3167                                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
3168                                 break;
3169
3170                         case NLP_STE_MAPPED_NODE:
3171                                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3172                                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
3173                                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
3174                                 break;
3175
3176                         default:
3177                                 break;
3178                         }
3179                 }
3180
3181                 /* Start discovery - this should just do CLEAR_LA */
3182                 lpfc_disc_start(phba);
3183         }
3184         return 0;
3185 }
3186
3187 void
3188 lpfc_els_timeout(unsigned long ptr)
3189 {
3190         struct lpfc_hba *phba;
3191         unsigned long iflag;
3192
3193         phba = (struct lpfc_hba *)ptr;
3194         if (phba == 0)
3195                 return;
3196         spin_lock_irqsave(phba->host->host_lock, iflag);
3197         if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
3198                 phba->work_hba_events |= WORKER_ELS_TMO;
3199                 if (phba->work_wait)
3200                         wake_up(phba->work_wait);
3201         }
3202         spin_unlock_irqrestore(phba->host->host_lock, iflag);
3203         return;
3204 }
3205
3206 void
3207 lpfc_els_timeout_handler(struct lpfc_hba *phba)
3208 {
3209         struct lpfc_sli_ring *pring;
3210         struct lpfc_iocbq *tmp_iocb, *piocb;
3211         IOCB_t *cmd = NULL;
3212         struct lpfc_dmabuf *pcmd;
3213         struct list_head *dlp;
3214         uint32_t *elscmd;
3215         uint32_t els_command;
3216         uint32_t timeout;
3217         uint32_t remote_ID;
3218
3219         if (phba == 0)
3220                 return;
3221         spin_lock_irq(phba->host->host_lock);
3222         /* If the timer is already canceled do nothing */
3223         if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
3224                 spin_unlock_irq(phba->host->host_lock);
3225                 return;
3226         }
3227         timeout = (uint32_t)(phba->fc_ratov << 1);
3228
3229         pring = &phba->sli.ring[LPFC_ELS_RING];
3230         dlp = &pring->txcmplq;
3231
3232         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
3233                 cmd = &piocb->iocb;
3234
3235                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3236                         continue;
3237                 }
3238                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3239                 elscmd = (uint32_t *) (pcmd->virt);
3240                 els_command = *elscmd;
3241
3242                 if ((els_command == ELS_CMD_FARP)
3243                     || (els_command == ELS_CMD_FARPR)) {
3244                         continue;
3245                 }
3246
3247                 if (piocb->drvrTimeout > 0) {
3248                         if (piocb->drvrTimeout >= timeout) {
3249                                 piocb->drvrTimeout -= timeout;
3250                         } else {
3251                                 piocb->drvrTimeout = 0;
3252                         }
3253                         continue;
3254                 }
3255
3256                 list_del(&piocb->list);
3257                 pring->txcmplq_cnt--;
3258
3259                 if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
3260                         struct lpfc_nodelist *ndlp;
3261                         spin_unlock_irq(phba->host->host_lock);
3262                         ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext);
3263                         spin_lock_irq(phba->host->host_lock);
3264                         remote_ID = ndlp->nlp_DID;
3265                         if (cmd->un.elsreq64.bdl.ulpIoTag32) {
3266                                 lpfc_sli_issue_abort_iotag32(phba,
3267                                         pring, piocb);
3268                         }
3269                 } else {
3270                         remote_ID = cmd->un.elsreq64.remoteID;
3271                 }
3272
3273                 lpfc_printf_log(phba,
3274                                 KERN_ERR,
3275                                 LOG_ELS,
3276                                 "%d:0127 ELS timeout Data: x%x x%x x%x x%x\n",
3277                                 phba->brd_no, els_command,
3278                                 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
3279
3280                 /*
3281                  * The iocb has timed out; abort it.
3282                  */
3283                 if (piocb->iocb_cmpl) {
3284                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3285                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3286                         spin_unlock_irq(phba->host->host_lock);
3287                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3288                         spin_lock_irq(phba->host->host_lock);
3289                 } else
3290                         lpfc_sli_release_iocbq(phba, piocb);
3291         }
3292         if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
3293                 mod_timer(&phba->els_tmofunc, jiffies + HZ * timeout);
3294
3295         spin_unlock_irq(phba->host->host_lock);
3296 }
3297
3298 void
3299 lpfc_els_flush_cmd(struct lpfc_hba * phba)
3300 {
3301         struct lpfc_sli_ring *pring;
3302         struct lpfc_iocbq *tmp_iocb, *piocb;
3303         IOCB_t *cmd = NULL;
3304         struct lpfc_dmabuf *pcmd;
3305         uint32_t *elscmd;
3306         uint32_t els_command;
3307
3308         pring = &phba->sli.ring[LPFC_ELS_RING];
3309         spin_lock_irq(phba->host->host_lock);
3310         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
3311                 cmd = &piocb->iocb;
3312
3313                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3314                         continue;
3315                 }
3316
3317                 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
3318                 if ((cmd->ulpCommand == CMD_QUE_RING_BUF_CN) ||
3319                     (cmd->ulpCommand == CMD_QUE_RING_BUF64_CN) ||
3320                     (cmd->ulpCommand == CMD_CLOSE_XRI_CN) ||
3321                     (cmd->ulpCommand == CMD_ABORT_XRI_CN)) {
3322                         continue;
3323                 }
3324
3325                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3326                 elscmd = (uint32_t *) (pcmd->virt);
3327                 els_command = *elscmd;
3328
3329                 list_del(&piocb->list);
3330                 pring->txcmplq_cnt--;
3331
3332                 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3333                 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3334
3335                 if (piocb->iocb_cmpl) {
3336                         spin_unlock_irq(phba->host->host_lock);
3337                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3338                         spin_lock_irq(phba->host->host_lock);
3339                 } else
3340                         lpfc_sli_release_iocbq(phba, piocb);
3341         }
3342
3343         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
3344                 cmd = &piocb->iocb;
3345
3346                 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
3347                         continue;
3348                 }
3349                 pcmd = (struct lpfc_dmabuf *) piocb->context2;
3350                 elscmd = (uint32_t *) (pcmd->virt);
3351                 els_command = *elscmd;
3352
3353                 list_del(&piocb->list);
3354                 pring->txcmplq_cnt--;
3355
3356                 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3357                 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
3358
3359                 if (piocb->iocb_cmpl) {
3360                         spin_unlock_irq(phba->host->host_lock);
3361                         (piocb->iocb_cmpl) (phba, piocb, piocb);
3362                         spin_lock_irq(phba->host->host_lock);
3363                 } else
3364                         lpfc_sli_release_iocbq(phba, piocb);
3365         }
3366         spin_unlock_irq(phba->host->host_lock);
3367         return;
3368 }
3369
3370 void
3371 lpfc_els_unsol_event(struct lpfc_hba * phba,
3372                      struct lpfc_sli_ring * pring, struct lpfc_iocbq * elsiocb)
3373 {
3374         struct lpfc_sli *psli;
3375         struct lpfc_nodelist *ndlp;
3376         struct lpfc_dmabuf *mp;
3377         uint32_t *lp;
3378         IOCB_t *icmd;
3379         struct ls_rjt stat;
3380         uint32_t cmd;
3381         uint32_t did;
3382         uint32_t newnode;
3383         uint32_t drop_cmd = 0;  /* by default do NOT drop received cmd */
3384         uint32_t rjt_err = 0;
3385
3386         psli = &phba->sli;
3387         icmd = &elsiocb->iocb;
3388
3389         if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) &&
3390                 ((icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING)) {
3391                 /* Not enough posted buffers; Try posting more buffers */
3392                 phba->fc_stat.NoRcvBuf++;
3393                 lpfc_post_buffer(phba, pring, 0, 1);
3394                 return;
3395         }
3396
3397         /* If there are no BDEs associated with this IOCB,
3398          * there is nothing to do.
3399          */
3400         if (icmd->ulpBdeCount == 0)
3401                 return;
3402
3403         /* type of ELS cmd is first 32bit word in packet */
3404         mp = lpfc_sli_ringpostbuf_get(phba, pring, getPaddr(icmd->un.
3405                                                             cont64[0].
3406                                                             addrHigh,
3407                                                             icmd->un.
3408                                                             cont64[0].addrLow));
3409         if (mp == 0) {
3410                 drop_cmd = 1;
3411                 goto dropit;
3412         }
3413
3414         newnode = 0;
3415         lp = (uint32_t *) mp->virt;
3416         cmd = *lp++;
3417         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], 1, 1);
3418
3419         if (icmd->ulpStatus) {
3420                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3421                 kfree(mp);
3422                 drop_cmd = 1;
3423                 goto dropit;
3424         }
3425
3426         /* Check to see if link went down during discovery */
3427         if (lpfc_els_chk_latt(phba)) {
3428                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3429                 kfree(mp);
3430                 drop_cmd = 1;
3431                 goto dropit;
3432         }
3433
3434         did = icmd->un.rcvels.remoteID;
3435         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
3436         if (!ndlp) {
3437                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3438                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3439                 if (!ndlp) {
3440                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3441                         kfree(mp);
3442                         drop_cmd = 1;
3443                         goto dropit;
3444                 }
3445
3446                 lpfc_nlp_init(phba, ndlp, did);
3447                 newnode = 1;
3448                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) {
3449                         ndlp->nlp_type |= NLP_FABRIC;
3450                 }
3451                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
3452                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
3453         }
3454
3455         phba->fc_stat.elsRcvFrame++;
3456         elsiocb->context1 = ndlp;
3457         elsiocb->context2 = mp;
3458
3459         if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
3460                 cmd &= ELS_CMD_MASK;
3461         }
3462         /* ELS command <elsCmd> received from NPORT <did> */
3463         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3464                         "%d:0112 ELS command x%x received from NPORT x%x "
3465                         "Data: x%x\n", phba->brd_no, cmd, did, phba->hba_state);
3466
3467         switch (cmd) {
3468         case ELS_CMD_PLOGI:
3469                 phba->fc_stat.elsRcvPLOGI++;
3470                 if (phba->hba_state < LPFC_DISC_AUTH) {
3471                         rjt_err = 1;
3472                         break;
3473                 }
3474                 ndlp = lpfc_plogi_confirm_nport(phba, mp, ndlp);
3475                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PLOGI);
3476                 break;
3477         case ELS_CMD_FLOGI:
3478                 phba->fc_stat.elsRcvFLOGI++;
3479                 lpfc_els_rcv_flogi(phba, elsiocb, ndlp, newnode);
3480                 if (newnode) {
3481                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3482                 }
3483                 break;
3484         case ELS_CMD_LOGO:
3485                 phba->fc_stat.elsRcvLOGO++;
3486                 if (phba->hba_state < LPFC_DISC_AUTH) {
3487                         rjt_err = 1;
3488                         break;
3489                 }
3490                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
3491                 break;
3492         case ELS_CMD_PRLO:
3493                 phba->fc_stat.elsRcvPRLO++;
3494                 if (phba->hba_state < LPFC_DISC_AUTH) {
3495                         rjt_err = 1;
3496                         break;
3497                 }
3498                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
3499                 break;
3500         case ELS_CMD_RSCN:
3501                 phba->fc_stat.elsRcvRSCN++;
3502                 lpfc_els_rcv_rscn(phba, elsiocb, ndlp, newnode);
3503                 if (newnode) {
3504                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3505                 }
3506                 break;
3507         case ELS_CMD_ADISC:
3508                 phba->fc_stat.elsRcvADISC++;
3509                 if (phba->hba_state < LPFC_DISC_AUTH) {
3510                         rjt_err = 1;
3511                         break;
3512                 }
3513                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_ADISC);
3514                 break;
3515         case ELS_CMD_PDISC:
3516                 phba->fc_stat.elsRcvPDISC++;
3517                 if (phba->hba_state < LPFC_DISC_AUTH) {
3518                         rjt_err = 1;
3519                         break;
3520                 }
3521                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PDISC);
3522                 break;
3523         case ELS_CMD_FARPR:
3524                 phba->fc_stat.elsRcvFARPR++;
3525                 lpfc_els_rcv_farpr(phba, elsiocb, ndlp);
3526                 break;
3527         case ELS_CMD_FARP:
3528                 phba->fc_stat.elsRcvFARP++;
3529                 lpfc_els_rcv_farp(phba, elsiocb, ndlp);
3530                 break;
3531         case ELS_CMD_FAN:
3532                 phba->fc_stat.elsRcvFAN++;
3533                 lpfc_els_rcv_fan(phba, elsiocb, ndlp);
3534                 break;
3535         case ELS_CMD_PRLI:
3536                 phba->fc_stat.elsRcvPRLI++;
3537                 if (phba->hba_state < LPFC_DISC_AUTH) {
3538                         rjt_err = 1;
3539                         break;
3540                 }
3541                 lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
3542                 break;
3543         case ELS_CMD_LIRR:
3544                 phba->fc_stat.elsRcvLIRR++;
3545                 lpfc_els_rcv_lirr(phba, elsiocb, ndlp);
3546                 if (newnode) {
3547                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3548                 }
3549                 break;
3550         case ELS_CMD_RPS:
3551                 phba->fc_stat.elsRcvRPS++;
3552                 lpfc_els_rcv_rps(phba, elsiocb, ndlp);
3553                 if (newnode) {
3554                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3555                 }
3556                 break;
3557         case ELS_CMD_RPL:
3558                 phba->fc_stat.elsRcvRPL++;
3559                 lpfc_els_rcv_rpl(phba, elsiocb, ndlp);
3560                 if (newnode) {
3561                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3562                 }
3563                 break;
3564         case ELS_CMD_RNID:
3565                 phba->fc_stat.elsRcvRNID++;
3566                 lpfc_els_rcv_rnid(phba, elsiocb, ndlp);
3567                 if (newnode) {
3568                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3569                 }
3570                 break;
3571         default:
3572                 /* Unsupported ELS command, reject */
3573                 rjt_err = 1;
3574
3575                 /* Unknown ELS command <elsCmd> received from NPORT <did> */
3576                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
3577                                 "%d:0115 Unknown ELS command x%x received from "
3578                                 "NPORT x%x\n", phba->brd_no, cmd, did);
3579                 if (newnode) {
3580                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
3581                 }
3582                 break;
3583         }
3584
3585         /* check if need to LS_RJT received ELS cmd */
3586         if (rjt_err) {
3587                 stat.un.b.lsRjtRsvd0 = 0;
3588                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
3589                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
3590                 stat.un.b.vendorUnique = 0;
3591                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, elsiocb, ndlp);
3592         }
3593
3594         if (elsiocb->context2) {
3595                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3596                 kfree(mp);
3597         }
3598 dropit:
3599         /* check if need to drop received ELS cmd */
3600         if (drop_cmd == 1) {
3601                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
3602                                 "%d:0111 Dropping received ELS cmd "
3603                                 "Data: x%x x%x x%x\n", phba->brd_no,
3604                                 icmd->ulpStatus, icmd->un.ulpWord[4],
3605                                 icmd->ulpTimeout);
3606                 phba->fc_stat.elsRcvDrop++;
3607         }
3608         return;
3609 }