drivers/scsi/lpfc/lpfc_nportdisc.c

   1  /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2013 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/slab.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_sli4.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45
  46 /* Called to verify a rcv'ed ADISC was intended for us. */
  47 static int
  48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  49                  struct lpfc_name *nn, struct lpfc_name *pn)
  50 {
  51         /* First, we MUST have a RPI registered */
  52         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  53                 return 0;
  54
  55         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  56          * table entry for that node.
  57          */
  58         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  59                 return 0;
  60
  61         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  62                 return 0;
  63
  64         /* we match, return success */
  65         return 1;
  66 }
  67
  68 int
  69 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  70                  struct serv_parm *sp, uint32_t class, int flogi)
  71 {
  72         volatile struct serv_parm *hsp = &vport->fc_sparam;
  73         uint16_t hsp_value, ssp_value = 0;
  74
  75         /*
  76          * The receive data field size and buffer-to-buffer receive data field
  77          * size entries are 16 bits but are represented as two 8-bit fields in
  78          * the driver data structure to account for rsvd bits and other control
  79          * bits.  Reconstruct and compare the fields as a 16-bit values before
  80          * correcting the byte values.
  81          */
  82         if (sp->cls1.classValid) {
  83                 if (!flogi) {
  84                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  85                                      hsp->cls1.rcvDataSizeLsb);
  86                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  87                                      sp->cls1.rcvDataSizeLsb);
  88                         if (!ssp_value)
  89                                 goto bad_service_param;
  90                         if (ssp_value > hsp_value) {
  91                                 sp->cls1.rcvDataSizeLsb =
  92                                         hsp->cls1.rcvDataSizeLsb;
  93                                 sp->cls1.rcvDataSizeMsb =
  94                                         hsp->cls1.rcvDataSizeMsb;
  95                         }
  96                 }
  97         } else if (class == CLASS1)
  98                 goto bad_service_param;
  99         if (sp->cls2.classValid) {
 100                 if (!flogi) {
 101                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 102                                      hsp->cls2.rcvDataSizeLsb);
 103                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 104                                      sp->cls2.rcvDataSizeLsb);
 105                         if (!ssp_value)
 106                                 goto bad_service_param;
 107                         if (ssp_value > hsp_value) {
 108                                 sp->cls2.rcvDataSizeLsb =
 109                                         hsp->cls2.rcvDataSizeLsb;
 110                                 sp->cls2.rcvDataSizeMsb =
 111                                         hsp->cls2.rcvDataSizeMsb;
 112                         }
 113                 }
 114         } else if (class == CLASS2)
 115                 goto bad_service_param;
 116         if (sp->cls3.classValid) {
 117                 if (!flogi) {
 118                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 119                                      hsp->cls3.rcvDataSizeLsb);
 120                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 121                                      sp->cls3.rcvDataSizeLsb);
 122                         if (!ssp_value)
 123                                 goto bad_service_param;
 124                         if (ssp_value > hsp_value) {
 125                                 sp->cls3.rcvDataSizeLsb =
 126                                         hsp->cls3.rcvDataSizeLsb;
 127                                 sp->cls3.rcvDataSizeMsb =
 128                                         hsp->cls3.rcvDataSizeMsb;
 129                         }
 130                 }
 131         } else if (class == CLASS3)
 132                 goto bad_service_param;
 133
 134         /*
 135          * Preserve the upper four bits of the MSB from the PLOGI response.
 136          * These bits contain the Buffer-to-Buffer State Change Number
 137          * from the target and need to be passed to the FW.
 138          */
 139         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 140         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 141         if (ssp_value > hsp_value) {
 142                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 143                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 144                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 145         }
 146
 147         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 148         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 149         return 1;
 150 bad_service_param:
 151         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 152                          "0207 Device %x "
 153                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 154                          "invalid service parameters.  Ignoring device.\n",
 155                          ndlp->nlp_DID,
 156                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 157                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 158                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 159                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 160         return 0;
 161 }
 162
 163 static void *
 164 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 165                         struct lpfc_iocbq *rspiocb)
 166 {
 167         struct lpfc_dmabuf *pcmd, *prsp;
 168         uint32_t *lp;
 169         void     *ptr = NULL;
 170         IOCB_t   *irsp;
 171
 172         irsp = &rspiocb->iocb;
 173         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 174
 175         /* For lpfc_els_abort, context2 could be zero'ed to delay
 176          * freeing associated memory till after ABTS completes.
 177          */
 178         if (pcmd) {
 179                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 180                                        list);
 181                 if (prsp) {
 182                         lp = (uint32_t *) prsp->virt;
 183                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 184                 }
 185         } else {
 186                 /* Force ulpStatus error since we are returning NULL ptr */
 187                 if (!(irsp->ulpStatus)) {
 188                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 189                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 190                 }
 191                 ptr = NULL;
 192         }
 193         return ptr;
 194 }
 195
 196
 197
 198 /*
 199  * Free resources / clean up outstanding I/Os
 200  * associated with a LPFC_NODELIST entry. This
 201  * routine effectively results in a "software abort".
 202  */
 203 int
 204 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 205 {
 206         LIST_HEAD(completions);
 207         LIST_HEAD(txcmplq_completions);
 208         LIST_HEAD(abort_list);
 209         struct lpfc_sli  *psli = &phba->sli;
 210         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 211         struct lpfc_iocbq *iocb, *next_iocb;
 212
 213         /* Abort outstanding I/O on NPort <nlp_DID> */
 214         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 215                          "2819 Abort outstanding I/O on NPort x%x "
 216                          "Data: x%x x%x x%x\n",
 217                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 218                          ndlp->nlp_rpi);
 219
 220         lpfc_fabric_abort_nport(ndlp);
 221
 222         /* First check the txq */
 223         spin_lock_irq(&phba->hbalock);
 224         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 225                 /* Check to see if iocb matches the nport we are looking for */
 226                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 227                         /* It matches, so deque and call compl with anp error */
 228                         list_move_tail(&iocb->list, &completions);
 229                 }
 230         }
 231
 232         /* Next check the txcmplq */
 233         list_splice_init(&pring->txcmplq, &txcmplq_completions);
 234         spin_unlock_irq(&phba->hbalock);
 235
 236         list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
 237                 /* Check to see if iocb matches the nport we are looking for */
 238                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 239                         list_add_tail(&iocb->dlist, &abort_list);
 240         }
 241         spin_lock_irq(&phba->hbalock);
 242         list_splice(&txcmplq_completions, &pring->txcmplq);
 243         spin_unlock_irq(&phba->hbalock);
 244
 245         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 246                         spin_lock_irq(&phba->hbalock);
 247                         list_del_init(&iocb->dlist);
 248                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 249                         spin_unlock_irq(&phba->hbalock);
 250         }
 251
 252         /* Cancel all the IOCBs from the completions list */
 253         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 254                               IOERR_SLI_ABORTED);
 255
 256         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 257         return 0;
 258 }
 259
 260 static int
 261 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 262                struct lpfc_iocbq *cmdiocb)
 263 {
 264         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 265         struct lpfc_hba    *phba = vport->phba;
 266         struct lpfc_dmabuf *pcmd;
 267         uint32_t *lp;
 268         IOCB_t *icmd;
 269         struct serv_parm *sp;
 270         LPFC_MBOXQ_t *mbox;
 271         struct ls_rjt stat;
 272         int rc;
 273
 274         memset(&stat, 0, sizeof (struct ls_rjt));
 275         if (vport->port_state <= LPFC_FDISC) {
 276                 /* Before responding to PLOGI, check for pt2pt mode.
 277                  * If we are pt2pt, with an outstanding FLOGI, abort
 278                  * the FLOGI and resend it first.
 279                  */
 280                 if (vport->fc_flag & FC_PT2PT) {
 281                          lpfc_els_abort_flogi(phba);
 282                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 283                                 /* If the other side is supposed to initiate
 284                                  * the PLOGI anyway, just ACC it now and
 285                                  * move on with discovery.
 286                                  */
 287                                 phba->fc_edtov = FF_DEF_EDTOV;
 288                                 phba->fc_ratov = FF_DEF_RATOV;
 289                                 /* Start discovery - this should just do
 290                                    CLEAR_LA */
 291                                 lpfc_disc_start(vport);
 292                         } else
 293                                 lpfc_initial_flogi(vport);
 294                 } else {
 295                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 296                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 297                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 298                                             ndlp, NULL);
 299                         return 0;
 300                 }
 301         }
 302         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 303         lp = (uint32_t *) pcmd->virt;
 304         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 305         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 306                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 307                                  "0140 PLOGI Reject: invalid nname\n");
 308                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 309                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 310                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 311                         NULL);
 312                 return 0;
 313         }
 314         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 315                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 316                                  "0141 PLOGI Reject: invalid pname\n");
 317                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 318                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 319                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 320                         NULL);
 321                 return 0;
 322         }
 323         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 324                 /* Reject this request because invalid parameters */
 325                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 326                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 327                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 328                         NULL);
 329                 return 0;
 330         }
 331         icmd = &cmdiocb->iocb;
 332
 333         /* PLOGI chkparm OK */
 334         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 335                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 336                          "x%x x%x x%x\n",
 337                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 338                          ndlp->nlp_rpi, vport->port_state,
 339                          vport->fc_flag);
 340
 341         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 342                 ndlp->nlp_fcp_info |= CLASS2;
 343         else
 344                 ndlp->nlp_fcp_info |= CLASS3;
 345
 346         ndlp->nlp_class_sup = 0;
 347         if (sp->cls1.classValid)
 348                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 349         if (sp->cls2.classValid)
 350                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 351         if (sp->cls3.classValid)
 352                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 353         if (sp->cls4.classValid)
 354                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 355         ndlp->nlp_maxframe =
 356                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 357
 358         /* no need to reg_login if we are already in one of these states */
 359         switch (ndlp->nlp_state) {
 360         case  NLP_STE_NPR_NODE:
 361                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 362                         break;
 363         case  NLP_STE_REG_LOGIN_ISSUE:
 364         case  NLP_STE_PRLI_ISSUE:
 365         case  NLP_STE_UNMAPPED_NODE:
 366         case  NLP_STE_MAPPED_NODE:
 367                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 368                 return 1;
 369         }
 370
 371         /* Check for Nport to NPort pt2pt protocol */
 372         if ((vport->fc_flag & FC_PT2PT) &&
 373             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 374
 375                 /* rcv'ed PLOGI decides what our NPortId will be */
 376                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 377                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 378                 if (mbox == NULL)
 379                         goto out;
 380                 lpfc_config_link(phba, mbox);
 381                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 382                 mbox->vport = vport;
 383                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 384                 if (rc == MBX_NOT_FINISHED) {
 385                         mempool_free(mbox, phba->mbox_mem_pool);
 386                         goto out;
 387                 }
 388                 /*
 389                  * For SLI4, the VFI/VPI are registered AFTER the
 390                  * Nport with the higher WWPN sends us a PLOGI with
 391                  * our assigned NPortId.
 392                  */
 393                 if (phba->sli_rev == LPFC_SLI_REV4)
 394                         lpfc_issue_reg_vfi(vport);
 395
 396                 lpfc_can_disctmo(vport);
 397         }
 398         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 399         if (!mbox)
 400                 goto out;
 401
 402         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 403         if (phba->sli_rev == LPFC_SLI_REV4)
 404                 lpfc_unreg_rpi(vport, ndlp);
 405
 406         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 407                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 408         if (rc) {
 409                 mempool_free(mbox, phba->mbox_mem_pool);
 410                 goto out;
 411         }
 412
 413         /* ACC PLOGI rsp command needs to execute first,
 414          * queue this mbox command to be processed later.
 415          */
 416         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 417         /*
 418          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 419          * command issued in lpfc_cmpl_els_acc().
 420          */
 421         mbox->vport = vport;
 422         spin_lock_irq(shost->host_lock);
 423         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 424         spin_unlock_irq(shost->host_lock);
 425
 426         /*
 427          * If there is an outstanding PLOGI issued, abort it before
 428          * sending ACC rsp for received PLOGI. If pending plogi
 429          * is not canceled here, the plogi will be rejected by
 430          * remote port and will be retried. On a configuration with
 431          * single discovery thread, this will cause a huge delay in
 432          * discovery. Also this will cause multiple state machines
 433          * running in parallel for this node.
 434          */
 435         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 436                 /* software abort outstanding PLOGI */
 437                 lpfc_els_abort(phba, ndlp);
 438         }
 439
 440         if ((vport->port_type == LPFC_NPIV_PORT &&
 441              vport->cfg_restrict_login)) {
 442
 443                 /* In order to preserve RPIs, we want to cleanup
 444                  * the default RPI the firmware created to rcv
 445                  * this ELS request. The only way to do this is
 446                  * to register, then unregister the RPI.
 447                  */
 448                 spin_lock_irq(shost->host_lock);
 449                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 450                 spin_unlock_irq(shost->host_lock);
 451                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 452                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 453                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 454                         ndlp, mbox);
 455                 if (rc)
 456                         mempool_free(mbox, phba->mbox_mem_pool);
 457                 return 1;
 458         }
 459         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 460         if (rc)
 461                 mempool_free(mbox, phba->mbox_mem_pool);
 462         return 1;
 463 out:
 464         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 465         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 466         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 467         return 0;
 468 }
 469
 470 /**
 471  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 472  * @phba: pointer to lpfc hba data structure.
 473  * @mboxq: pointer to mailbox object
 474  *
 475  * This routine is invoked to issue a completion to a rcv'ed
 476  * ADISC or PDISC after the paused RPI has been resumed.
 477  **/
 478 static void
 479 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 480 {
 481         struct lpfc_vport *vport;
 482         struct lpfc_iocbq *elsiocb;
 483         struct lpfc_nodelist *ndlp;
 484         uint32_t cmd;
 485
 486         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 487         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 488         vport = mboxq->vport;
 489         cmd = elsiocb->drvrTimeout;
 490
 491         if (cmd == ELS_CMD_ADISC) {
 492                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 493         } else {
 494                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 495                         ndlp, NULL);
 496         }
 497         kfree(elsiocb);
 498         mempool_free(mboxq, phba->mbox_mem_pool);
 499 }
 500
 501 static int
 502 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 503                 struct lpfc_iocbq *cmdiocb)
 504 {
 505         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 506         struct lpfc_iocbq  *elsiocb;
 507         struct lpfc_dmabuf *pcmd;
 508         struct serv_parm   *sp;
 509         struct lpfc_name   *pnn, *ppn;
 510         struct ls_rjt stat;
 511         ADISC *ap;
 512         IOCB_t *icmd;
 513         uint32_t *lp;
 514         uint32_t cmd;
 515
 516         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 517         lp = (uint32_t *) pcmd->virt;
 518
 519         cmd = *lp++;
 520         if (cmd == ELS_CMD_ADISC) {
 521                 ap = (ADISC *) lp;
 522                 pnn = (struct lpfc_name *) & ap->nodeName;
 523                 ppn = (struct lpfc_name *) & ap->portName;
 524         } else {
 525                 sp = (struct serv_parm *) lp;
 526                 pnn = (struct lpfc_name *) & sp->nodeName;
 527                 ppn = (struct lpfc_name *) & sp->portName;
 528         }
 529
 530         icmd = &cmdiocb->iocb;
 531         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 532
 533                 /*
 534                  * As soon as  we send ACC, the remote NPort can
 535                  * start sending us data. Thus, for SLI4 we must
 536                  * resume the RPI before the ACC goes out.
 537                  */
 538                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 539                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 540                                 GFP_KERNEL);
 541                         if (elsiocb) {
 542
 543                                 /* Save info from cmd IOCB used in rsp */
 544                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 545                                         sizeof(struct lpfc_iocbq));
 546
 547                                 /* Save the ELS cmd */
 548                                 elsiocb->drvrTimeout = cmd;
 549
 550                                 lpfc_sli4_resume_rpi(ndlp,
 551                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 552                                 goto out;
 553                         }
 554                 }
 555
 556                 if (cmd == ELS_CMD_ADISC) {
 557                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 558                 } else {
 559                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 560                                 ndlp, NULL);
 561                 }
 562 out:
 563                 /* If we are authenticated, move to the proper state */
 564                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 565                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 566                 else
 567                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 568
 569                 return 1;
 570         }
 571         /* Reject this request because invalid parameters */
 572         stat.un.b.lsRjtRsvd0 = 0;
 573         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 574         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 575         stat.un.b.vendorUnique = 0;
 576         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 577
 578         /* 1 sec timeout */
 579         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 580
 581         spin_lock_irq(shost->host_lock);
 582         ndlp->nlp_flag |= NLP_DELAY_TMO;
 583         spin_unlock_irq(shost->host_lock);
 584         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 585         ndlp->nlp_prev_state = ndlp->nlp_state;
 586         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 587         return 0;
 588 }
 589
 590 static int
 591 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 592               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 593 {
 594         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 595         struct lpfc_hba    *phba = vport->phba;
 596         struct lpfc_vport **vports;
 597         int i, active_vlink_present = 0 ;
 598
 599         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 600         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 601          * PLOGIs during LOGO storms from a device.
 602          */
 603         spin_lock_irq(shost->host_lock);
 604         ndlp->nlp_flag |= NLP_LOGO_ACC;
 605         spin_unlock_irq(shost->host_lock);
 606         if (els_cmd == ELS_CMD_PRLO)
 607                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 608         else
 609                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 610         if (ndlp->nlp_DID == Fabric_DID) {
 611                 if (vport->port_state <= LPFC_FDISC)
 612                         goto out;
 613                 lpfc_linkdown_port(vport);
 614                 spin_lock_irq(shost->host_lock);
 615                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 616                 spin_unlock_irq(shost->host_lock);
 617                 vports = lpfc_create_vport_work_array(phba);
 618                 if (vports) {
 619                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 620                                         i++) {
 621                                 if ((!(vports[i]->fc_flag &
 622                                         FC_VPORT_LOGO_RCVD)) &&
 623                                         (vports[i]->port_state > LPFC_FDISC)) {
 624                                         active_vlink_present = 1;
 625                                         break;
 626                                 }
 627                         }
 628                         lpfc_destroy_vport_work_array(phba, vports);
 629                 }
 630
 631                 if (active_vlink_present) {
 632                         /*
 633                          * If there are other active VLinks present,
 634                          * re-instantiate the Vlink using FDISC.
 635                          */
 636                         mod_timer(&ndlp->nlp_delayfunc,
 637                                   jiffies + msecs_to_jiffies(1000));
 638                         spin_lock_irq(shost->host_lock);
 639                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 640                         spin_unlock_irq(shost->host_lock);
 641                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 642                         vport->port_state = LPFC_FDISC;
 643                 } else {
 644                         spin_lock_irq(shost->host_lock);
 645                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 646                         spin_unlock_irq(shost->host_lock);
 647                         lpfc_retry_pport_discovery(phba);
 648                 }
 649         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 650                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 651                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 652                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 653                 /* Only try to re-login if this is NOT a Fabric Node */
 654                 mod_timer(&ndlp->nlp_delayfunc,
 655                           jiffies + msecs_to_jiffies(1000 * 1));
 656                 spin_lock_irq(shost->host_lock);
 657                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 658                 spin_unlock_irq(shost->host_lock);
 659
 660                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 661         }
 662 out:
 663         ndlp->nlp_prev_state = ndlp->nlp_state;
 664         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 665
 666         spin_lock_irq(shost->host_lock);
 667         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 668         spin_unlock_irq(shost->host_lock);
 669         /* The driver has to wait until the ACC completes before it continues
 670          * processing the LOGO.  The action will resume in
 671          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 672          * unreg_login, the driver waits so the ACC does not get aborted.
 673          */
 674         return 0;
 675 }
 676
 677 static void
 678 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 679               struct lpfc_iocbq *cmdiocb)
 680 {
 681         struct lpfc_dmabuf *pcmd;
 682         uint32_t *lp;
 683         PRLI *npr;
 684         struct fc_rport *rport = ndlp->rport;
 685         u32 roles;
 686
 687         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 688         lp = (uint32_t *) pcmd->virt;
 689         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 690
 691         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 692         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 693         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 694         if (npr->prliType == PRLI_FCP_TYPE) {
 695                 if (npr->initiatorFunc)
 696                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 697                 if (npr->targetFunc) {
 698                         ndlp->nlp_type |= NLP_FCP_TARGET;
 699                         if (npr->writeXferRdyDis)
 700                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 701                 }
 702                 if (npr->Retry)
 703                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 704         }
 705         if (rport) {
 706                 /* We need to update the rport role values */
 707                 roles = FC_RPORT_ROLE_UNKNOWN;
 708                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 709                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 710                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 711                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 712
 713                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 714                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 715                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 716
 717                 fc_remote_port_rolechg(rport, roles);
 718         }
 719 }
 720
 721 static uint32_t
 722 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 723 {
 724         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 725
 726         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 727                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 728                 return 0;
 729         }
 730
 731         if (!(vport->fc_flag & FC_PT2PT)) {
 732                 /* Check config parameter use-adisc or FCP-2 */
 733                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 734                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 735                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 736                         spin_lock_irq(shost->host_lock);
 737                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 738                         spin_unlock_irq(shost->host_lock);
 739                         return 1;
 740                 }
 741         }
 742         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 743         lpfc_unreg_rpi(vport, ndlp);
 744         return 0;
 745 }
 746
 747 /**
 748  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 749  * @phba : Pointer to lpfc_hba structure.
 750  * @vport: Pointer to lpfc_vport structure.
 751  * @rpi  : rpi to be release.
 752  *
 753  * This function will send a unreg_login mailbox command to the firmware
 754  * to release a rpi.
 755  **/
 756 void
 757 lpfc_release_rpi(struct lpfc_hba *phba,
 758                 struct lpfc_vport *vport,
 759                 uint16_t rpi)
 760 {
 761         LPFC_MBOXQ_t *pmb;
 762         int rc;
 763
 764         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 765                         GFP_KERNEL);
 766         if (!pmb)
 767                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 768                         "2796 mailbox memory allocation failed \n");
 769         else {
 770                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 771                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 772                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 773                 if (rc == MBX_NOT_FINISHED)
 774                         mempool_free(pmb, phba->mbox_mem_pool);
 775         }
 776 }
 777
 778 static uint32_t
 779 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 780                   void *arg, uint32_t evt)
 781 {
 782         struct lpfc_hba *phba;
 783         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 784         MAILBOX_t *mb;
 785         uint16_t rpi;
 786
 787         phba = vport->phba;
 788         /* Release the RPI if reglogin completing */
 789         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 790                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 791                 (!pmb->u.mb.mbxStatus)) {
 792                 mb = &pmb->u.mb;
 793                 rpi = pmb->u.mb.un.varWords[0];
 794                 lpfc_release_rpi(phba, vport, rpi);
 795         }
 796         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 797                          "0271 Illegal State Transition: node x%x "
 798                          "event x%x, state x%x Data: x%x x%x\n",
 799                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 800                          ndlp->nlp_flag);
 801         return ndlp->nlp_state;
 802 }
 803
 804 static uint32_t
 805 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 806                   void *arg, uint32_t evt)
 807 {
 808         /* This transition is only legal if we previously
 809          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 810          * working on the same NPortID, do nothing for this thread
 811          * to stop it.
 812          */
 813         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 814                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 815                          "0272 Illegal State Transition: node x%x "
 816                          "event x%x, state x%x Data: x%x x%x\n",
 817                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 818                          ndlp->nlp_flag);
 819         }
 820         return ndlp->nlp_state;
 821 }
 822
 823 /* Start of Discovery State Machine routines */
 824
 825 static uint32_t
 826 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 827                            void *arg, uint32_t evt)
 828 {
 829         struct lpfc_iocbq *cmdiocb;
 830
 831         cmdiocb = (struct lpfc_iocbq *) arg;
 832
 833         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 834                 return ndlp->nlp_state;
 835         }
 836         return NLP_STE_FREED_NODE;
 837 }
 838
 839 static uint32_t
 840 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 841                          void *arg, uint32_t evt)
 842 {
 843         lpfc_issue_els_logo(vport, ndlp, 0);
 844         return ndlp->nlp_state;
 845 }
 846
 847 static uint32_t
 848 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 849                           void *arg, uint32_t evt)
 850 {
 851         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 852         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 853
 854         spin_lock_irq(shost->host_lock);
 855         ndlp->nlp_flag |= NLP_LOGO_ACC;
 856         spin_unlock_irq(shost->host_lock);
 857         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 858
 859         return ndlp->nlp_state;
 860 }
 861
 862 static uint32_t
 863 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 864                            void *arg, uint32_t evt)
 865 {
 866         return NLP_STE_FREED_NODE;
 867 }
 868
 869 static uint32_t
 870 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 871                            void *arg, uint32_t evt)
 872 {
 873         return NLP_STE_FREED_NODE;
 874 }
 875
 876 static uint32_t
 877 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 878                         struct lpfc_nodelist *ndlp,
 879                            void *arg, uint32_t evt)
 880 {
 881         return ndlp->nlp_state;
 882 }
 883
 884 static uint32_t
 885 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 886                            void *arg, uint32_t evt)
 887 {
 888         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 889         struct lpfc_hba   *phba = vport->phba;
 890         struct lpfc_iocbq *cmdiocb = arg;
 891         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 892         uint32_t *lp = (uint32_t *) pcmd->virt;
 893         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 894         struct ls_rjt stat;
 895         int port_cmp;
 896
 897         memset(&stat, 0, sizeof (struct ls_rjt));
 898
 899         /* For a PLOGI, we only accept if our portname is less
 900          * than the remote portname.
 901          */
 902         phba->fc_stat.elsLogiCol++;
 903         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 904                           sizeof(struct lpfc_name));
 905
 906         if (port_cmp >= 0) {
 907                 /* Reject this request because the remote node will accept
 908                    ours */
 909                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 910                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 911                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 912                         NULL);
 913         } else {
 914                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 915                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 916                     (vport->num_disc_nodes)) {
 917                         spin_lock_irq(shost->host_lock);
 918                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 919                         spin_unlock_irq(shost->host_lock);
 920                         /* Check if there are more PLOGIs to be sent */
 921                         lpfc_more_plogi(vport);
 922                         if (vport->num_disc_nodes == 0) {
 923                                 spin_lock_irq(shost->host_lock);
 924                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 925                                 spin_unlock_irq(shost->host_lock);
 926                                 lpfc_can_disctmo(vport);
 927                                 lpfc_end_rscn(vport);
 928                         }
 929                 }
 930         } /* If our portname was less */
 931
 932         return ndlp->nlp_state;
 933 }
 934
 935 static uint32_t
 936 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 937                           void *arg, uint32_t evt)
 938 {
 939         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 940         struct ls_rjt     stat;
 941
 942         memset(&stat, 0, sizeof (struct ls_rjt));
 943         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 944         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 945         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 946         return ndlp->nlp_state;
 947 }
 948
 949 static uint32_t
 950 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 951                           void *arg, uint32_t evt)
 952 {
 953         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 954
 955                                 /* software abort outstanding PLOGI */
 956         lpfc_els_abort(vport->phba, ndlp);
 957
 958         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 959         return ndlp->nlp_state;
 960 }
 961
 962 static uint32_t
 963 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 964                          void *arg, uint32_t evt)
 965 {
 966         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 967         struct lpfc_hba   *phba = vport->phba;
 968         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 969
 970         /* software abort outstanding PLOGI */
 971         lpfc_els_abort(phba, ndlp);
 972
 973         if (evt == NLP_EVT_RCV_LOGO) {
 974                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 975         } else {
 976                 lpfc_issue_els_logo(vport, ndlp, 0);
 977         }
 978
 979         /* Put ndlp in npr state set plogi timer for 1 sec */
 980         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
 981         spin_lock_irq(shost->host_lock);
 982         ndlp->nlp_flag |= NLP_DELAY_TMO;
 983         spin_unlock_irq(shost->host_lock);
 984         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 985         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 986         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 987
 988         return ndlp->nlp_state;
 989 }
 990
 991 static uint32_t
 992 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 993                             struct lpfc_nodelist *ndlp,
 994                             void *arg,
 995                             uint32_t evt)
 996 {
 997         struct lpfc_hba    *phba = vport->phba;
 998         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 999         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1000         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1001         uint32_t *lp;
1002         IOCB_t *irsp;
1003         struct serv_parm *sp;
1004         LPFC_MBOXQ_t *mbox;
1005
1006         cmdiocb = (struct lpfc_iocbq *) arg;
1007         rspiocb = cmdiocb->context_un.rsp_iocb;
1008
1009         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1010                 /* Recovery from PLOGI collision logic */
1011                 return ndlp->nlp_state;
1012         }
1013
1014         irsp = &rspiocb->iocb;
1015
1016         if (irsp->ulpStatus)
1017                 goto out;
1018
1019         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1020
1021         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1022
1023         lp = (uint32_t *) prsp->virt;
1024         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1025
1026         /* Some switches have FDMI servers returning 0 for WWN */
1027         if ((ndlp->nlp_DID != FDMI_DID) &&
1028                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1029                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1030                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1031                                  "0142 PLOGI RSP: Invalid WWN.\n");
1032                 goto out;
1033         }
1034         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1035                 goto out;
1036         /* PLOGI chkparm OK */
1037         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1038                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1039                          ndlp->nlp_DID, ndlp->nlp_state,
1040                          ndlp->nlp_flag, ndlp->nlp_rpi);
1041         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1042                 ndlp->nlp_fcp_info |= CLASS2;
1043         else
1044                 ndlp->nlp_fcp_info |= CLASS3;
1045
1046         ndlp->nlp_class_sup = 0;
1047         if (sp->cls1.classValid)
1048                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1049         if (sp->cls2.classValid)
1050                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1051         if (sp->cls3.classValid)
1052                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1053         if (sp->cls4.classValid)
1054                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1055         ndlp->nlp_maxframe =
1056                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1057
1058         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1059         if (!mbox) {
1060                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1061                         "0133 PLOGI: no memory for reg_login "
1062                         "Data: x%x x%x x%x x%x\n",
1063                         ndlp->nlp_DID, ndlp->nlp_state,
1064                         ndlp->nlp_flag, ndlp->nlp_rpi);
1065                 goto out;
1066         }
1067
1068         lpfc_unreg_rpi(vport, ndlp);
1069
1070         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1071                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1072                 switch (ndlp->nlp_DID) {
1073                 case NameServer_DID:
1074                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1075                         break;
1076                 case FDMI_DID:
1077                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1078                         break;
1079                 default:
1080                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1081                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1082                 }
1083                 mbox->context2 = lpfc_nlp_get(ndlp);
1084                 mbox->vport = vport;
1085                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1086                     != MBX_NOT_FINISHED) {
1087                         lpfc_nlp_set_state(vport, ndlp,
1088                                            NLP_STE_REG_LOGIN_ISSUE);
1089                         return ndlp->nlp_state;
1090                 }
1091                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1092                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1093                 /* decrement node reference count to the failed mbox
1094                  * command
1095                  */
1096                 lpfc_nlp_put(ndlp);
1097                 mp = (struct lpfc_dmabuf *) mbox->context1;
1098                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1099                 kfree(mp);
1100                 mempool_free(mbox, phba->mbox_mem_pool);
1101
1102                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1103                                  "0134 PLOGI: cannot issue reg_login "
1104                                  "Data: x%x x%x x%x x%x\n",
1105                                  ndlp->nlp_DID, ndlp->nlp_state,
1106                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1107         } else {
1108                 mempool_free(mbox, phba->mbox_mem_pool);
1109
1110                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1111                                  "0135 PLOGI: cannot format reg_login "
1112                                  "Data: x%x x%x x%x x%x\n",
1113                                  ndlp->nlp_DID, ndlp->nlp_state,
1114                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1115         }
1116
1117
1118 out:
1119         if (ndlp->nlp_DID == NameServer_DID) {
1120                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1121                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1122                                  "0261 Cannot Register NameServer login\n");
1123         }
1124
1125         /*
1126         ** In case the node reference counter does not go to zero, ensure that
1127         ** the stale state for the node is not processed.
1128         */
1129
1130         ndlp->nlp_prev_state = ndlp->nlp_state;
1131         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1132         spin_lock_irq(shost->host_lock);
1133         ndlp->nlp_flag |= NLP_DEFER_RM;
1134         spin_unlock_irq(shost->host_lock);
1135         return NLP_STE_FREED_NODE;
1136 }
1137
1138 static uint32_t
1139 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1140                            void *arg, uint32_t evt)
1141 {
1142         return ndlp->nlp_state;
1143 }
1144
1145 static uint32_t
1146 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1147         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1148 {
1149         struct lpfc_hba *phba;
1150         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1151         MAILBOX_t *mb = &pmb->u.mb;
1152         uint16_t rpi;
1153
1154         phba = vport->phba;
1155         /* Release the RPI */
1156         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1157                 !mb->mbxStatus) {
1158                 rpi = pmb->u.mb.un.varWords[0];
1159                 lpfc_release_rpi(phba, vport, rpi);
1160         }
1161         return ndlp->nlp_state;
1162 }
1163
1164 static uint32_t
1165 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1166                            void *arg, uint32_t evt)
1167 {
1168         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1169
1170         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1171                 spin_lock_irq(shost->host_lock);
1172                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1173                 spin_unlock_irq(shost->host_lock);
1174                 return ndlp->nlp_state;
1175         } else {
1176                 /* software abort outstanding PLOGI */
1177                 lpfc_els_abort(vport->phba, ndlp);
1178
1179                 lpfc_drop_node(vport, ndlp);
1180                 return NLP_STE_FREED_NODE;
1181         }
1182 }
1183
1184 static uint32_t
1185 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1186                               struct lpfc_nodelist *ndlp,
1187                               void *arg,
1188                               uint32_t evt)
1189 {
1190         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1191         struct lpfc_hba  *phba = vport->phba;
1192
1193         /* Don't do anything that will mess up processing of the
1194          * previous RSCN.
1195          */
1196         if (vport->fc_flag & FC_RSCN_DEFERRED)
1197                 return ndlp->nlp_state;
1198
1199         /* software abort outstanding PLOGI */
1200         lpfc_els_abort(phba, ndlp);
1201
1202         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1203         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1204         spin_lock_irq(shost->host_lock);
1205         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1206         spin_unlock_irq(shost->host_lock);
1207
1208         return ndlp->nlp_state;
1209 }
1210
1211 static uint32_t
1212 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1213                            void *arg, uint32_t evt)
1214 {
1215         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1216         struct lpfc_hba   *phba = vport->phba;
1217         struct lpfc_iocbq *cmdiocb;
1218
1219         /* software abort outstanding ADISC */
1220         lpfc_els_abort(phba, ndlp);
1221
1222         cmdiocb = (struct lpfc_iocbq *) arg;
1223
1224         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1225                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1226                         spin_lock_irq(shost->host_lock);
1227                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1228                         spin_unlock_irq(shost->host_lock);
1229                         if (vport->num_disc_nodes)
1230                                 lpfc_more_adisc(vport);
1231                 }
1232                 return ndlp->nlp_state;
1233         }
1234         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1235         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1236         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1237
1238         return ndlp->nlp_state;
1239 }
1240
1241 static uint32_t
1242 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1243                           void *arg, uint32_t evt)
1244 {
1245         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1246
1247         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1248         return ndlp->nlp_state;
1249 }
1250
1251 static uint32_t
1252 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1253                           void *arg, uint32_t evt)
1254 {
1255         struct lpfc_hba *phba = vport->phba;
1256         struct lpfc_iocbq *cmdiocb;
1257
1258         cmdiocb = (struct lpfc_iocbq *) arg;
1259
1260         /* software abort outstanding ADISC */
1261         lpfc_els_abort(phba, ndlp);
1262
1263         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1264         return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1269                             struct lpfc_nodelist *ndlp,
1270                             void *arg, uint32_t evt)
1271 {
1272         struct lpfc_iocbq *cmdiocb;
1273
1274         cmdiocb = (struct lpfc_iocbq *) arg;
1275
1276         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1277         return ndlp->nlp_state;
1278 }
1279
1280 static uint32_t
1281 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1282                           void *arg, uint32_t evt)
1283 {
1284         struct lpfc_iocbq *cmdiocb;
1285
1286         cmdiocb = (struct lpfc_iocbq *) arg;
1287
1288         /* Treat like rcv logo */
1289         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1290         return ndlp->nlp_state;
1291 }
1292
1293 static uint32_t
1294 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1295                             struct lpfc_nodelist *ndlp,
1296                             void *arg, uint32_t evt)
1297 {
1298         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1299         struct lpfc_hba   *phba = vport->phba;
1300         struct lpfc_iocbq *cmdiocb, *rspiocb;
1301         IOCB_t *irsp;
1302         ADISC *ap;
1303         int rc;
1304
1305         cmdiocb = (struct lpfc_iocbq *) arg;
1306         rspiocb = cmdiocb->context_un.rsp_iocb;
1307
1308         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1309         irsp = &rspiocb->iocb;
1310
1311         if ((irsp->ulpStatus) ||
1312             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1313                 /* 1 sec timeout */
1314                 mod_timer(&ndlp->nlp_delayfunc,
1315                           jiffies + msecs_to_jiffies(1000));
1316                 spin_lock_irq(shost->host_lock);
1317                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1318                 spin_unlock_irq(shost->host_lock);
1319                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1320
1321                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1322                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1323
1324                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1325                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1326                 lpfc_unreg_rpi(vport, ndlp);
1327                 return ndlp->nlp_state;
1328         }
1329
1330         if (phba->sli_rev == LPFC_SLI_REV4) {
1331                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1332                 if (rc) {
1333                         /* Stay in state and retry. */
1334                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1335                         return ndlp->nlp_state;
1336                 }
1337         }
1338
1339         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1340                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1341                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1342         } else {
1343                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1344                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1345         }
1346
1347         return ndlp->nlp_state;
1348 }
1349
1350 static uint32_t
1351 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1352                            void *arg, uint32_t evt)
1353 {
1354         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1355
1356         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1357                 spin_lock_irq(shost->host_lock);
1358                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1359                 spin_unlock_irq(shost->host_lock);
1360                 return ndlp->nlp_state;
1361         } else {
1362                 /* software abort outstanding ADISC */
1363                 lpfc_els_abort(vport->phba, ndlp);
1364
1365                 lpfc_drop_node(vport, ndlp);
1366                 return NLP_STE_FREED_NODE;
1367         }
1368 }
1369
1370 static uint32_t
1371 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1372                               struct lpfc_nodelist *ndlp,
1373                               void *arg,
1374                               uint32_t evt)
1375 {
1376         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1377         struct lpfc_hba  *phba = vport->phba;
1378
1379         /* Don't do anything that will mess up processing of the
1380          * previous RSCN.
1381          */
1382         if (vport->fc_flag & FC_RSCN_DEFERRED)
1383                 return ndlp->nlp_state;
1384
1385         /* software abort outstanding ADISC */
1386         lpfc_els_abort(phba, ndlp);
1387
1388         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1389         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1390         spin_lock_irq(shost->host_lock);
1391         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1392         spin_unlock_irq(shost->host_lock);
1393         lpfc_disc_set_adisc(vport, ndlp);
1394         return ndlp->nlp_state;
1395 }
1396
1397 static uint32_t
1398 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1399                               struct lpfc_nodelist *ndlp,
1400                               void *arg,
1401                               uint32_t evt)
1402 {
1403         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1404
1405         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1406         return ndlp->nlp_state;
1407 }
1408
1409 static uint32_t
1410 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1411                              struct lpfc_nodelist *ndlp,
1412                              void *arg,
1413                              uint32_t evt)
1414 {
1415         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1416
1417         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1418         return ndlp->nlp_state;
1419 }
1420
1421 static uint32_t
1422 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1423                              struct lpfc_nodelist *ndlp,
1424                              void *arg,
1425                              uint32_t evt)
1426 {
1427         struct lpfc_hba   *phba = vport->phba;
1428         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1429         LPFC_MBOXQ_t      *mb;
1430         LPFC_MBOXQ_t      *nextmb;
1431         struct lpfc_dmabuf *mp;
1432
1433         cmdiocb = (struct lpfc_iocbq *) arg;
1434
1435         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1436         if ((mb = phba->sli.mbox_active)) {
1437                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1438                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1439                         lpfc_nlp_put(ndlp);
1440                         mb->context2 = NULL;
1441                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1442                 }
1443         }
1444
1445         spin_lock_irq(&phba->hbalock);
1446         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1447                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1448                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1449                         mp = (struct lpfc_dmabuf *) (mb->context1);
1450                         if (mp) {
1451                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1452                                 kfree(mp);
1453                         }
1454                         lpfc_nlp_put(ndlp);
1455                         list_del(&mb->list);
1456                         phba->sli.mboxq_cnt--;
1457                         mempool_free(mb, phba->mbox_mem_pool);
1458                 }
1459         }
1460         spin_unlock_irq(&phba->hbalock);
1461
1462         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1463         return ndlp->nlp_state;
1464 }
1465
1466 static uint32_t
1467 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1468                                struct lpfc_nodelist *ndlp,
1469                                void *arg,
1470                                uint32_t evt)
1471 {
1472         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1473
1474         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1475         return ndlp->nlp_state;
1476 }
1477
1478 static uint32_t
1479 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1480                              struct lpfc_nodelist *ndlp,
1481                              void *arg,
1482                              uint32_t evt)
1483 {
1484         struct lpfc_iocbq *cmdiocb;
1485
1486         cmdiocb = (struct lpfc_iocbq *) arg;
1487         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1488         return ndlp->nlp_state;
1489 }
1490
1491 static uint32_t
1492 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1493                                   struct lpfc_nodelist *ndlp,
1494                                   void *arg,
1495                                   uint32_t evt)
1496 {
1497         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1498         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1499         MAILBOX_t *mb = &pmb->u.mb;
1500         uint32_t did  = mb->un.varWords[1];
1501
1502         if (mb->mbxStatus) {
1503                 /* RegLogin failed */
1504                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1505                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1506                                  "x%x\n",
1507                                  did, mb->mbxStatus, vport->port_state,
1508                                  mb->un.varRegLogin.vpi,
1509                                  mb->un.varRegLogin.rpi);
1510                 /*
1511                  * If RegLogin failed due to lack of HBA resources do not
1512                  * retry discovery.
1513                  */
1514                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1515                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1516                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1517                         return ndlp->nlp_state;
1518                 }
1519
1520                 /* Put ndlp in npr state set plogi timer for 1 sec */
1521                 mod_timer(&ndlp->nlp_delayfunc,
1522                           jiffies + msecs_to_jiffies(1000 * 1));
1523                 spin_lock_irq(shost->host_lock);
1524                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1525                 spin_unlock_irq(shost->host_lock);
1526                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1527
1528                 lpfc_issue_els_logo(vport, ndlp, 0);
1529                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1530                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1531                 return ndlp->nlp_state;
1532         }
1533
1534         /* SLI4 ports have preallocated logical rpis. */
1535         if (vport->phba->sli_rev < LPFC_SLI_REV4)
1536                 ndlp->nlp_rpi = mb->un.varWords[0];
1537
1538         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1539
1540         /* Only if we are not a fabric nport do we issue PRLI */
1541         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1542                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1543                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1544                 lpfc_issue_els_prli(vport, ndlp, 0);
1545         } else {
1546                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1547                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1548         }
1549         return ndlp->nlp_state;
1550 }
1551
1552 static uint32_t
1553 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1554                               struct lpfc_nodelist *ndlp,
1555                               void *arg,
1556                               uint32_t evt)
1557 {
1558         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1559
1560         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1561                 spin_lock_irq(shost->host_lock);
1562                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1563                 spin_unlock_irq(shost->host_lock);
1564                 return ndlp->nlp_state;
1565         } else {
1566                 lpfc_drop_node(vport, ndlp);
1567                 return NLP_STE_FREED_NODE;
1568         }
1569 }
1570
1571 static uint32_t
1572 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1573                                  struct lpfc_nodelist *ndlp,
1574                                  void *arg,
1575                                  uint32_t evt)
1576 {
1577         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1578
1579         /* Don't do anything that will mess up processing of the
1580          * previous RSCN.
1581          */
1582         if (vport->fc_flag & FC_RSCN_DEFERRED)
1583                 return ndlp->nlp_state;
1584
1585         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1586         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1587         spin_lock_irq(shost->host_lock);
1588         ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1589         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1590         spin_unlock_irq(shost->host_lock);
1591         lpfc_disc_set_adisc(vport, ndlp);
1592         return ndlp->nlp_state;
1593 }
1594
1595 static uint32_t
1596 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1597                           void *arg, uint32_t evt)
1598 {
1599         struct lpfc_iocbq *cmdiocb;
1600
1601         cmdiocb = (struct lpfc_iocbq *) arg;
1602
1603         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1604         return ndlp->nlp_state;
1605 }
1606
1607 static uint32_t
1608 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1609                          void *arg, uint32_t evt)
1610 {
1611         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1612
1613         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1614         return ndlp->nlp_state;
1615 }
1616
1617 static uint32_t
1618 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1619                          void *arg, uint32_t evt)
1620 {
1621         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1622
1623         /* Software abort outstanding PRLI before sending acc */
1624         lpfc_els_abort(vport->phba, ndlp);
1625
1626         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1627         return ndlp->nlp_state;
1628 }
1629
1630 static uint32_t
1631 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1632                            void *arg, uint32_t evt)
1633 {
1634         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1635
1636         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1637         return ndlp->nlp_state;
1638 }
1639
1640 /* This routine is envoked when we rcv a PRLO request from a nport
1641  * we are logged into.  We should send back a PRLO rsp setting the
1642  * appropriate bits.
1643  * NEXT STATE = PRLI_ISSUE
1644  */
1645 static uint32_t
1646 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1647                          void *arg, uint32_t evt)
1648 {
1649         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1650
1651         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1652         return ndlp->nlp_state;
1653 }
1654
1655 static uint32_t
1656 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1657                           void *arg, uint32_t evt)
1658 {
1659         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1660         struct lpfc_iocbq *cmdiocb, *rspiocb;
1661         struct lpfc_hba   *phba = vport->phba;
1662         IOCB_t *irsp;
1663         PRLI *npr;
1664
1665         cmdiocb = (struct lpfc_iocbq *) arg;
1666         rspiocb = cmdiocb->context_un.rsp_iocb;
1667         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1668
1669         irsp = &rspiocb->iocb;
1670         if (irsp->ulpStatus) {
1671                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1672                     vport->cfg_restrict_login) {
1673                         goto out;
1674                 }
1675                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1676                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1677                 return ndlp->nlp_state;
1678         }
1679
1680         /* Check out PRLI rsp */
1681         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1682         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1683         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1684         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1685             (npr->prliType == PRLI_FCP_TYPE)) {
1686                 if (npr->initiatorFunc)
1687                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1688                 if (npr->targetFunc) {
1689                         ndlp->nlp_type |= NLP_FCP_TARGET;
1690                         if (npr->writeXferRdyDis)
1691                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1692                 }
1693                 if (npr->Retry)
1694                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1695         }
1696         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1697             (vport->port_type == LPFC_NPIV_PORT) &&
1698              vport->cfg_restrict_login) {
1699 out:
1700                 spin_lock_irq(shost->host_lock);
1701                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1702                 spin_unlock_irq(shost->host_lock);
1703                 lpfc_issue_els_logo(vport, ndlp, 0);
1704
1705                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1706                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1707                 return ndlp->nlp_state;
1708         }
1709
1710         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1711         if (ndlp->nlp_type & NLP_FCP_TARGET)
1712                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1713         else
1714                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1715         return ndlp->nlp_state;
1716 }
1717
1718 /*! lpfc_device_rm_prli_issue
1719  *
1720  * \pre
1721  * \post
1722  * \param   phba
1723  * \param   ndlp
1724  * \param   arg
1725  * \param   evt
1726  * \return  uint32_t
1727  *
1728  * \b Description:
1729  *    This routine is envoked when we a request to remove a nport we are in the
1730  *    process of PRLIing. We should software abort outstanding prli, unreg
1731  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1732  *    on plogi list so it can be freed when LOGO completes.
1733  *
1734  */
1735
1736 static uint32_t
1737 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1738                           void *arg, uint32_t evt)
1739 {
1740         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1741
1742         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1743                 spin_lock_irq(shost->host_lock);
1744                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1745                 spin_unlock_irq(shost->host_lock);
1746                 return ndlp->nlp_state;
1747         } else {
1748                 /* software abort outstanding PLOGI */
1749                 lpfc_els_abort(vport->phba, ndlp);
1750
1751                 lpfc_drop_node(vport, ndlp);
1752                 return NLP_STE_FREED_NODE;
1753         }
1754 }
1755
1756
1757 /*! lpfc_device_recov_prli_issue
1758  *
1759  * \pre
1760  * \post
1761  * \param   phba
1762  * \param   ndlp
1763  * \param   arg
1764  * \param   evt
1765  * \return  uint32_t
1766  *
1767  * \b Description:
1768  *    The routine is envoked when the state of a device is unknown, like
1769  *    during a link down. We should remove the nodelist entry from the
1770  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1771  *    outstanding PRLI command, then free the node entry.
1772  */
1773 static uint32_t
1774 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1775                              struct lpfc_nodelist *ndlp,
1776                              void *arg,
1777                              uint32_t evt)
1778 {
1779         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1780         struct lpfc_hba  *phba = vport->phba;
1781
1782         /* Don't do anything that will mess up processing of the
1783          * previous RSCN.
1784          */
1785         if (vport->fc_flag & FC_RSCN_DEFERRED)
1786                 return ndlp->nlp_state;
1787
1788         /* software abort outstanding PRLI */
1789         lpfc_els_abort(phba, ndlp);
1790
1791         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1792         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1793         spin_lock_irq(shost->host_lock);
1794         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1795         spin_unlock_irq(shost->host_lock);
1796         lpfc_disc_set_adisc(vport, ndlp);
1797         return ndlp->nlp_state;
1798 }
1799
1800 static uint32_t
1801 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1802                           void *arg, uint32_t evt)
1803 {
1804         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1805         struct ls_rjt     stat;
1806
1807         memset(&stat, 0, sizeof(struct ls_rjt));
1808         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1809         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1810         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1811         return ndlp->nlp_state;
1812 }
1813
1814 static uint32_t
1815 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1816                          void *arg, uint32_t evt)
1817 {
1818         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1819         struct ls_rjt     stat;
1820
1821         memset(&stat, 0, sizeof(struct ls_rjt));
1822         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1823         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1824         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1825         return ndlp->nlp_state;
1826 }
1827
1828 static uint32_t
1829 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1830                          void *arg, uint32_t evt)
1831 {
1832         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1833         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1834
1835         spin_lock_irq(shost->host_lock);
1836         ndlp->nlp_flag &= NLP_LOGO_ACC;
1837         spin_unlock_irq(shost->host_lock);
1838         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1839         return ndlp->nlp_state;
1840 }
1841
1842 static uint32_t
1843 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1844                            void *arg, uint32_t evt)
1845 {
1846         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1847         struct ls_rjt     stat;
1848
1849         memset(&stat, 0, sizeof(struct ls_rjt));
1850         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1851         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1852         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1853         return ndlp->nlp_state;
1854 }
1855
1856 static uint32_t
1857 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1858                          void *arg, uint32_t evt)
1859 {
1860         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1861         struct ls_rjt     stat;
1862
1863         memset(&stat, 0, sizeof(struct ls_rjt));
1864         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1865         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1866         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1867         return ndlp->nlp_state;
1868 }
1869
1870 static uint32_t
1871 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1872                           void *arg, uint32_t evt)
1873 {
1874         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1875
1876         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1877         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1878         spin_lock_irq(shost->host_lock);
1879         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1880         spin_unlock_irq(shost->host_lock);
1881         lpfc_disc_set_adisc(vport, ndlp);
1882         return ndlp->nlp_state;
1883 }
1884
1885 static uint32_t
1886 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1887                           void *arg, uint32_t evt)
1888 {
1889         /*
1890          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
1891          * timed out and is calling for Device Remove.  In this case, the LOGO
1892          * must be allowed to complete in state LOGO_ISSUE so that the rpi
1893          * and other NLP flags are correctly cleaned up.
1894          */
1895         return ndlp->nlp_state;
1896 }
1897
1898 static uint32_t
1899 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1900                              struct lpfc_nodelist *ndlp,
1901                              void *arg, uint32_t evt)
1902 {
1903         /*
1904          * Device Recovery events have no meaning for a node with a LOGO
1905          * outstanding.  The LOGO has to complete first and handle the
1906          * node from that point.
1907          */
1908         return ndlp->nlp_state;
1909 }
1910
1911 static uint32_t
1912 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1913                           void *arg, uint32_t evt)
1914 {
1915         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1916
1917         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1918         return ndlp->nlp_state;
1919 }
1920
1921 static uint32_t
1922 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1923                          void *arg, uint32_t evt)
1924 {
1925         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1926
1927         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1928         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1929         return ndlp->nlp_state;
1930 }
1931
1932 static uint32_t
1933 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1934                          void *arg, uint32_t evt)
1935 {
1936         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1937
1938         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1939         return ndlp->nlp_state;
1940 }
1941
1942 static uint32_t
1943 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1944                            void *arg, uint32_t evt)
1945 {
1946         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1947
1948         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1949         return ndlp->nlp_state;
1950 }
1951
1952 static uint32_t
1953 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1954                          void *arg, uint32_t evt)
1955 {
1956         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1957
1958         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1959         return ndlp->nlp_state;
1960 }
1961
1962 static uint32_t
1963 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1964                              struct lpfc_nodelist *ndlp,
1965                              void *arg,
1966                              uint32_t evt)
1967 {
1968         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1969
1970         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1971         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1972         spin_lock_irq(shost->host_lock);
1973         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1974         spin_unlock_irq(shost->host_lock);
1975         lpfc_disc_set_adisc(vport, ndlp);
1976
1977         return ndlp->nlp_state;
1978 }
1979
1980 static uint32_t
1981 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1982                            void *arg, uint32_t evt)
1983 {
1984         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1985
1986         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1987         return ndlp->nlp_state;
1988 }
1989
1990 static uint32_t
1991 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1992                           void *arg, uint32_t evt)
1993 {
1994         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1995
1996         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1997         return ndlp->nlp_state;
1998 }
1999
2000 static uint32_t
2001 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2002                           void *arg, uint32_t evt)
2003 {
2004         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2005
2006         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2007         return ndlp->nlp_state;
2008 }
2009
2010 static uint32_t
2011 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2012                             struct lpfc_nodelist *ndlp,
2013                             void *arg, uint32_t evt)
2014 {
2015         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2016
2017         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2018         return ndlp->nlp_state;
2019 }
2020
2021 static uint32_t
2022 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2023                           void *arg, uint32_t evt)
2024 {
2025         struct lpfc_hba  *phba = vport->phba;
2026         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2027
2028         /* flush the target */
2029         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2030                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2031
2032         /* Treat like rcv logo */
2033         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2034         return ndlp->nlp_state;
2035 }
2036
2037 static uint32_t
2038 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2039                               struct lpfc_nodelist *ndlp,
2040                               void *arg,
2041                               uint32_t evt)
2042 {
2043         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2044
2045         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2046         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2047         spin_lock_irq(shost->host_lock);
2048         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2049         spin_unlock_irq(shost->host_lock);
2050         lpfc_disc_set_adisc(vport, ndlp);
2051         return ndlp->nlp_state;
2052 }
2053
2054 static uint32_t
2055 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2056                         void *arg, uint32_t evt)
2057 {
2058         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2059         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2060
2061         /* Ignore PLOGI if we have an outstanding LOGO */
2062         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2063                 return ndlp->nlp_state;
2064         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2065                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2066                 spin_lock_irq(shost->host_lock);
2067                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2068                 spin_unlock_irq(shost->host_lock);
2069         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2070                 /* send PLOGI immediately, move to PLOGI issue state */
2071                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2072                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2073                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2074                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2075                 }
2076         }
2077         return ndlp->nlp_state;
2078 }
2079
2080 static uint32_t
2081 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2082                        void *arg, uint32_t evt)
2083 {
2084         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2085         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2086         struct ls_rjt     stat;
2087
2088         memset(&stat, 0, sizeof (struct ls_rjt));
2089         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2090         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2091         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2092
2093         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2094                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2095                         spin_lock_irq(shost->host_lock);
2096                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2097                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2098                         spin_unlock_irq(shost->host_lock);
2099                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2100                         lpfc_issue_els_adisc(vport, ndlp, 0);
2101                 } else {
2102                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2103                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2104                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2105                 }
2106         }
2107         return ndlp->nlp_state;
2108 }
2109
2110 static uint32_t
2111 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2112                        void *arg, uint32_t evt)
2113 {
2114         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2115
2116         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2117         return ndlp->nlp_state;
2118 }
2119
2120 static uint32_t
2121 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2122                          void *arg, uint32_t evt)
2123 {
2124         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2125
2126         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2127         /*
2128          * Do not start discovery if discovery is about to start
2129          * or discovery in progress for this node. Starting discovery
2130          * here will affect the counting of discovery threads.
2131          */
2132         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2133             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2134                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2135                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2136                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2137                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2138                         lpfc_issue_els_adisc(vport, ndlp, 0);
2139                 } else {
2140                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2141                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2142                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2143                 }
2144         }
2145         return ndlp->nlp_state;
2146 }
2147
2148 static uint32_t
2149 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2150                        void *arg, uint32_t evt)
2151 {
2152         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2153         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2154
2155         spin_lock_irq(shost->host_lock);
2156         ndlp->nlp_flag |= NLP_LOGO_ACC;
2157         spin_unlock_irq(shost->host_lock);
2158
2159         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2160
2161         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2162                 mod_timer(&ndlp->nlp_delayfunc,
2163                           jiffies + msecs_to_jiffies(1000 * 1));
2164                 spin_lock_irq(shost->host_lock);
2165                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2166                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2167                 spin_unlock_irq(shost->host_lock);
2168                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2169         } else {
2170                 spin_lock_irq(shost->host_lock);
2171                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2172                 spin_unlock_irq(shost->host_lock);
2173         }
2174         return ndlp->nlp_state;
2175 }
2176
2177 static uint32_t
2178 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2179                          void *arg, uint32_t evt)
2180 {
2181         struct lpfc_iocbq *cmdiocb, *rspiocb;
2182         IOCB_t *irsp;
2183         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2184
2185         cmdiocb = (struct lpfc_iocbq *) arg;
2186         rspiocb = cmdiocb->context_un.rsp_iocb;
2187
2188         irsp = &rspiocb->iocb;
2189         if (irsp->ulpStatus) {
2190                 spin_lock_irq(shost->host_lock);
2191                 ndlp->nlp_flag |= NLP_DEFER_RM;
2192                 spin_unlock_irq(shost->host_lock);
2193                 return NLP_STE_FREED_NODE;
2194         }
2195         return ndlp->nlp_state;
2196 }
2197
2198 static uint32_t
2199 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2200                         void *arg, uint32_t evt)
2201 {
2202         struct lpfc_iocbq *cmdiocb, *rspiocb;
2203         IOCB_t *irsp;
2204
2205         cmdiocb = (struct lpfc_iocbq *) arg;
2206         rspiocb = cmdiocb->context_un.rsp_iocb;
2207
2208         irsp = &rspiocb->iocb;
2209         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2210                 lpfc_drop_node(vport, ndlp);
2211                 return NLP_STE_FREED_NODE;
2212         }
2213         return ndlp->nlp_state;
2214 }
2215
2216 static uint32_t
2217 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2218                         void *arg, uint32_t evt)
2219 {
2220         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2221
2222         /* For the fabric port just clear the fc flags. */
2223         if (ndlp->nlp_DID == Fabric_DID) {
2224                 spin_lock_irq(shost->host_lock);
2225                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2226                 spin_unlock_irq(shost->host_lock);
2227         }
2228         lpfc_unreg_rpi(vport, ndlp);
2229         return ndlp->nlp_state;
2230 }
2231
2232 static uint32_t
2233 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2234                          void *arg, uint32_t evt)
2235 {
2236         struct lpfc_iocbq *cmdiocb, *rspiocb;
2237         IOCB_t *irsp;
2238
2239         cmdiocb = (struct lpfc_iocbq *) arg;
2240         rspiocb = cmdiocb->context_un.rsp_iocb;
2241
2242         irsp = &rspiocb->iocb;
2243         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2244                 lpfc_drop_node(vport, ndlp);
2245                 return NLP_STE_FREED_NODE;
2246         }
2247         return ndlp->nlp_state;
2248 }
2249
2250 static uint32_t
2251 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2252                             struct lpfc_nodelist *ndlp,
2253                             void *arg, uint32_t evt)
2254 {
2255         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2256         MAILBOX_t    *mb = &pmb->u.mb;
2257
2258         if (!mb->mbxStatus) {
2259                 /* SLI4 ports have preallocated logical rpis. */
2260                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2261                         ndlp->nlp_rpi = mb->un.varWords[0];
2262                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2263         } else {
2264                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2265                         lpfc_drop_node(vport, ndlp);
2266                         return NLP_STE_FREED_NODE;
2267                 }
2268         }
2269         return ndlp->nlp_state;
2270 }
2271
2272 static uint32_t
2273 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2274                         void *arg, uint32_t evt)
2275 {
2276         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2277
2278         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2279                 spin_lock_irq(shost->host_lock);
2280                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2281                 spin_unlock_irq(shost->host_lock);
2282                 return ndlp->nlp_state;
2283         }
2284         lpfc_drop_node(vport, ndlp);
2285         return NLP_STE_FREED_NODE;
2286 }
2287
2288 static uint32_t
2289 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2290                            void *arg, uint32_t evt)
2291 {
2292         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2293
2294         /* Don't do anything that will mess up processing of the
2295          * previous RSCN.
2296          */
2297         if (vport->fc_flag & FC_RSCN_DEFERRED)
2298                 return ndlp->nlp_state;
2299
2300         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2301         spin_lock_irq(shost->host_lock);
2302         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2303         spin_unlock_irq(shost->host_lock);
2304         return ndlp->nlp_state;
2305 }
2306
2307
2308 /* This next section defines the NPort Discovery State Machine */
2309
2310 /* There are 4 different double linked lists nodelist entries can reside on.
2311  * The plogi list and adisc list are used when Link Up discovery or RSCN
2312  * processing is needed. Each list holds the nodes that we will send PLOGI
2313  * or ADISC on. These lists will keep track of what nodes will be effected
2314  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2315  * The unmapped_list will contain all nodes that we have successfully logged
2316  * into at the Fibre Channel level. The mapped_list will contain all nodes
2317  * that are mapped FCP targets.
2318  */
2319 /*
2320  * The bind list is a list of undiscovered (potentially non-existent) nodes
2321  * that we have saved binding information on. This information is used when
2322  * nodes transition from the unmapped to the mapped list.
2323  */
2324 /* For UNUSED_NODE state, the node has just been allocated .
2325  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2326  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2327  * and put on the unmapped list. For ADISC processing, the node is taken off
2328  * the ADISC list and placed on either the mapped or unmapped list (depending
2329  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2330  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2331  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2332  * node, the node is taken off the unmapped list. The binding list is checked
2333  * for a valid binding, or a binding is automatically assigned. If binding
2334  * assignment is unsuccessful, the node is left on the unmapped list. If
2335  * binding assignment is successful, the associated binding list entry (if
2336  * any) is removed, and the node is placed on the mapped list.
2337  */
2338 /*
2339  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2340  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2341  * expire, all effected nodes will receive a DEVICE_RM event.
2342  */
2343 /*
2344  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2345  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2346  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2347  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2348  * we will first process the ADISC list.  32 entries are processed initially and
2349  * ADISC is initited for each one.  Completions / Events for each node are
2350  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2351  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2352  * waiting, and the ADISC list count is identically 0, then we are done. For
2353  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2354  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2355  * list.  32 entries are processed initially and PLOGI is initited for each one.
2356  * Completions / Events for each node are funnelled thru the state machine.  As
2357  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2358  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2359  * indentically 0, then we are done. We have now completed discovery / RSCN
2360  * handling. Upon completion, ALL nodes should be on either the mapped or
2361  * unmapped lists.
2362  */
2363
2364 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2365      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2366         /* Action routine                  Event       Current State  */
2367         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2368         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2369         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2370         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2371         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2372         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2373         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2374         lpfc_disc_illegal,              /* CMPL_PRLI       */
2375         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2376         lpfc_disc_illegal,              /* CMPL_ADISC      */
2377         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2378         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2379         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2380
2381         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2382         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2383         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2384         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2385         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2386         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2387         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2388         lpfc_disc_illegal,              /* CMPL_PRLI       */
2389         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2390         lpfc_disc_illegal,              /* CMPL_ADISC      */
2391         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2392         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2393         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2394
2395         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2396         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2397         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2398         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2399         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2400         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2401         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2402         lpfc_disc_illegal,              /* CMPL_PRLI       */
2403         lpfc_disc_illegal,              /* CMPL_LOGO       */
2404         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2405         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2406         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2407         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2408
2409         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2410         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2411         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2412         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2413         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2414         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2415         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2416         lpfc_disc_illegal,              /* CMPL_PRLI       */
2417         lpfc_disc_illegal,              /* CMPL_LOGO       */
2418         lpfc_disc_illegal,              /* CMPL_ADISC      */
2419         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2420         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2421         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2422
2423         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2424         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2425         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2426         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2427         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2428         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2429         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2430         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2431         lpfc_disc_illegal,              /* CMPL_LOGO       */
2432         lpfc_disc_illegal,              /* CMPL_ADISC      */
2433         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2434         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2435         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2436
2437         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2438         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2439         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2440         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2441         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2442         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2443         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2444         lpfc_disc_illegal,              /* CMPL_PRLI       */
2445         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2446         lpfc_disc_illegal,              /* CMPL_ADISC      */
2447         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2448         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2449         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2450
2451         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2452         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2453         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2454         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2455         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2456         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2457         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2458         lpfc_disc_illegal,              /* CMPL_PRLI       */
2459         lpfc_disc_illegal,              /* CMPL_LOGO       */
2460         lpfc_disc_illegal,              /* CMPL_ADISC      */
2461         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2462         lpfc_disc_illegal,              /* DEVICE_RM       */
2463         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2464
2465         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2466         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2467         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2468         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2469         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2470         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2471         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2472         lpfc_disc_illegal,              /* CMPL_PRLI       */
2473         lpfc_disc_illegal,              /* CMPL_LOGO       */
2474         lpfc_disc_illegal,              /* CMPL_ADISC      */
2475         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2476         lpfc_disc_illegal,              /* DEVICE_RM       */
2477         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2478
2479         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2480         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2481         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2482         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2483         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2484         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2485         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2486         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2487         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2488         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2489         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2490         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2491         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2492 };
2493
2494 int
2495 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2496                         void *arg, uint32_t evt)
2497 {
2498         uint32_t cur_state, rc;
2499         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2500                          uint32_t);
2501         uint32_t got_ndlp = 0;
2502
2503         if (lpfc_nlp_get(ndlp))
2504                 got_ndlp = 1;
2505
2506         cur_state = ndlp->nlp_state;
2507
2508         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2509         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2510                          "0211 DSM in event x%x on NPort x%x in "
2511                          "state %d Data: x%x\n",
2512                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2513
2514         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2515                  "DSM in:          evt:%d ste:%d did:x%x",
2516                 evt, cur_state, ndlp->nlp_DID);
2517
2518         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2519         rc = (func) (vport, ndlp, arg, evt);
2520
2521         /* DSM out state <rc> on NPort <nlp_DID> */
2522         if (got_ndlp) {
2523                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2524                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2525                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2526
2527                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2528                         "DSM out:         ste:%d did:x%x flg:x%x",
2529                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2530                 /* Decrement the ndlp reference count held for this function */
2531                 lpfc_nlp_put(ndlp);
2532         } else {
2533                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2534                         "0213 DSM out state %d on NPort free\n", rc);
2535
2536                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2537                         "DSM out:         ste:%d did:x%x flg:x%x",
2538                         rc, 0, 0);
2539         }
2540
2541         return rc;
2542 }