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(abort_list);
 207         struct lpfc_sli  *psli = &phba->sli;
 208         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 209         struct lpfc_iocbq *iocb, *next_iocb;
 210
 211         /* Abort outstanding I/O on NPort <nlp_DID> */
 212         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 213                          "2819 Abort outstanding I/O on NPort x%x "
 214                          "Data: x%x x%x x%x\n",
 215                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 216                          ndlp->nlp_rpi);
 217         /* Clean up all fabric IOs first.*/
 218         lpfc_fabric_abort_nport(ndlp);
 219
 220         /*
 221          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 222          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 223          * txcmplq so that the abort operation completes them successfully.
 224          */
 225         spin_lock_irq(&phba->hbalock);
 226         if (phba->sli_rev == LPFC_SLI_REV4)
 227                 spin_lock(&pring->ring_lock);
 228         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 229         /* Add to abort_list on on NDLP match. */
 230                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 231                         list_add_tail(&iocb->dlist, &abort_list);
 232         }
 233         if (phba->sli_rev == LPFC_SLI_REV4)
 234                 spin_unlock(&pring->ring_lock);
 235         spin_unlock_irq(&phba->hbalock);
 236
 237         /* Abort the targeted IOs and remove them from the abort list. */
 238         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 239                         spin_lock_irq(&phba->hbalock);
 240                         list_del_init(&iocb->dlist);
 241                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 242                         spin_unlock_irq(&phba->hbalock);
 243         }
 244
 245         INIT_LIST_HEAD(&abort_list);
 246
 247         /* Now process the txq */
 248         spin_lock_irq(&phba->hbalock);
 249         if (phba->sli_rev == LPFC_SLI_REV4)
 250                 spin_lock(&pring->ring_lock);
 251
 252         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 253                 /* Check to see if iocb matches the nport we are looking for */
 254                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 255                         list_del_init(&iocb->list);
 256                         list_add_tail(&iocb->list, &abort_list);
 257                 }
 258         }
 259
 260         if (phba->sli_rev == LPFC_SLI_REV4)
 261                 spin_unlock(&pring->ring_lock);
 262         spin_unlock_irq(&phba->hbalock);
 263
 264         /* Cancel all the IOCBs from the completions list */
 265         lpfc_sli_cancel_iocbs(phba, &abort_list,
 266                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 267
 268         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 269         return 0;
 270 }
 271
 272 static int
 273 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 274                struct lpfc_iocbq *cmdiocb)
 275 {
 276         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 277         struct lpfc_hba    *phba = vport->phba;
 278         struct lpfc_dmabuf *pcmd;
 279         uint32_t *lp;
 280         IOCB_t *icmd;
 281         struct serv_parm *sp;
 282         LPFC_MBOXQ_t *mbox;
 283         struct ls_rjt stat;
 284         int rc;
 285
 286         memset(&stat, 0, sizeof (struct ls_rjt));
 287         if (vport->port_state <= LPFC_FDISC) {
 288                 /* Before responding to PLOGI, check for pt2pt mode.
 289                  * If we are pt2pt, with an outstanding FLOGI, abort
 290                  * the FLOGI and resend it first.
 291                  */
 292                 if (vport->fc_flag & FC_PT2PT) {
 293                          lpfc_els_abort_flogi(phba);
 294                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 295                                 /* If the other side is supposed to initiate
 296                                  * the PLOGI anyway, just ACC it now and
 297                                  * move on with discovery.
 298                                  */
 299                                 phba->fc_edtov = FF_DEF_EDTOV;
 300                                 phba->fc_ratov = FF_DEF_RATOV;
 301                                 /* Start discovery - this should just do
 302                                    CLEAR_LA */
 303                                 lpfc_disc_start(vport);
 304                         } else
 305                                 lpfc_initial_flogi(vport);
 306                 } else {
 307                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 308                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 309                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 310                                             ndlp, NULL);
 311                         return 0;
 312                 }
 313         }
 314         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 315         lp = (uint32_t *) pcmd->virt;
 316         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 317         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 318                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 319                                  "0140 PLOGI Reject: invalid nname\n");
 320                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 321                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 322                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 323                         NULL);
 324                 return 0;
 325         }
 326         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 327                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 328                                  "0141 PLOGI Reject: invalid pname\n");
 329                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 330                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 331                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 332                         NULL);
 333                 return 0;
 334         }
 335         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 336                 /* Reject this request because invalid parameters */
 337                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 338                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 339                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 340                         NULL);
 341                 return 0;
 342         }
 343         icmd = &cmdiocb->iocb;
 344
 345         /* PLOGI chkparm OK */
 346         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 347                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 348                          "x%x x%x x%x\n",
 349                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 350                          ndlp->nlp_rpi, vport->port_state,
 351                          vport->fc_flag);
 352
 353         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 354                 ndlp->nlp_fcp_info |= CLASS2;
 355         else
 356                 ndlp->nlp_fcp_info |= CLASS3;
 357
 358         ndlp->nlp_class_sup = 0;
 359         if (sp->cls1.classValid)
 360                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 361         if (sp->cls2.classValid)
 362                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 363         if (sp->cls3.classValid)
 364                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 365         if (sp->cls4.classValid)
 366                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 367         ndlp->nlp_maxframe =
 368                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 369
 370         /* no need to reg_login if we are already in one of these states */
 371         switch (ndlp->nlp_state) {
 372         case  NLP_STE_NPR_NODE:
 373                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 374                         break;
 375         case  NLP_STE_REG_LOGIN_ISSUE:
 376         case  NLP_STE_PRLI_ISSUE:
 377         case  NLP_STE_UNMAPPED_NODE:
 378         case  NLP_STE_MAPPED_NODE:
 379                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 380                 return 1;
 381         }
 382
 383         /* Check for Nport to NPort pt2pt protocol */
 384         if ((vport->fc_flag & FC_PT2PT) &&
 385             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 386
 387                 /* rcv'ed PLOGI decides what our NPortId will be */
 388                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 389                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 390                 if (mbox == NULL)
 391                         goto out;
 392                 lpfc_config_link(phba, mbox);
 393                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 394                 mbox->vport = vport;
 395                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 396                 if (rc == MBX_NOT_FINISHED) {
 397                         mempool_free(mbox, phba->mbox_mem_pool);
 398                         goto out;
 399                 }
 400                 /*
 401                  * For SLI4, the VFI/VPI are registered AFTER the
 402                  * Nport with the higher WWPN sends us a PLOGI with
 403                  * our assigned NPortId.
 404                  */
 405                 if (phba->sli_rev == LPFC_SLI_REV4)
 406                         lpfc_issue_reg_vfi(vport);
 407
 408                 lpfc_can_disctmo(vport);
 409         }
 410         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 411         if (!mbox)
 412                 goto out;
 413
 414         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 415         if (phba->sli_rev == LPFC_SLI_REV4)
 416                 lpfc_unreg_rpi(vport, ndlp);
 417
 418         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 419                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 420         if (rc) {
 421                 mempool_free(mbox, phba->mbox_mem_pool);
 422                 goto out;
 423         }
 424
 425         /* ACC PLOGI rsp command needs to execute first,
 426          * queue this mbox command to be processed later.
 427          */
 428         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 429         /*
 430          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 431          * command issued in lpfc_cmpl_els_acc().
 432          */
 433         mbox->vport = vport;
 434         spin_lock_irq(shost->host_lock);
 435         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 436         spin_unlock_irq(shost->host_lock);
 437
 438         /*
 439          * If there is an outstanding PLOGI issued, abort it before
 440          * sending ACC rsp for received PLOGI. If pending plogi
 441          * is not canceled here, the plogi will be rejected by
 442          * remote port and will be retried. On a configuration with
 443          * single discovery thread, this will cause a huge delay in
 444          * discovery. Also this will cause multiple state machines
 445          * running in parallel for this node.
 446          */
 447         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 448                 /* software abort outstanding PLOGI */
 449                 lpfc_els_abort(phba, ndlp);
 450         }
 451
 452         if ((vport->port_type == LPFC_NPIV_PORT &&
 453              vport->cfg_restrict_login)) {
 454
 455                 /* In order to preserve RPIs, we want to cleanup
 456                  * the default RPI the firmware created to rcv
 457                  * this ELS request. The only way to do this is
 458                  * to register, then unregister the RPI.
 459                  */
 460                 spin_lock_irq(shost->host_lock);
 461                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 462                 spin_unlock_irq(shost->host_lock);
 463                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 464                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 465                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 466                         ndlp, mbox);
 467                 if (rc)
 468                         mempool_free(mbox, phba->mbox_mem_pool);
 469                 return 1;
 470         }
 471         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 472         if (rc)
 473                 mempool_free(mbox, phba->mbox_mem_pool);
 474         return 1;
 475 out:
 476         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 477         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 478         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 479         return 0;
 480 }
 481
 482 /**
 483  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 484  * @phba: pointer to lpfc hba data structure.
 485  * @mboxq: pointer to mailbox object
 486  *
 487  * This routine is invoked to issue a completion to a rcv'ed
 488  * ADISC or PDISC after the paused RPI has been resumed.
 489  **/
 490 static void
 491 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 492 {
 493         struct lpfc_vport *vport;
 494         struct lpfc_iocbq *elsiocb;
 495         struct lpfc_nodelist *ndlp;
 496         uint32_t cmd;
 497
 498         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 499         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 500         vport = mboxq->vport;
 501         cmd = elsiocb->drvrTimeout;
 502
 503         if (cmd == ELS_CMD_ADISC) {
 504                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 505         } else {
 506                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 507                         ndlp, NULL);
 508         }
 509         kfree(elsiocb);
 510         mempool_free(mboxq, phba->mbox_mem_pool);
 511 }
 512
 513 static int
 514 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 515                 struct lpfc_iocbq *cmdiocb)
 516 {
 517         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 518         struct lpfc_iocbq  *elsiocb;
 519         struct lpfc_dmabuf *pcmd;
 520         struct serv_parm   *sp;
 521         struct lpfc_name   *pnn, *ppn;
 522         struct ls_rjt stat;
 523         ADISC *ap;
 524         IOCB_t *icmd;
 525         uint32_t *lp;
 526         uint32_t cmd;
 527
 528         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 529         lp = (uint32_t *) pcmd->virt;
 530
 531         cmd = *lp++;
 532         if (cmd == ELS_CMD_ADISC) {
 533                 ap = (ADISC *) lp;
 534                 pnn = (struct lpfc_name *) & ap->nodeName;
 535                 ppn = (struct lpfc_name *) & ap->portName;
 536         } else {
 537                 sp = (struct serv_parm *) lp;
 538                 pnn = (struct lpfc_name *) & sp->nodeName;
 539                 ppn = (struct lpfc_name *) & sp->portName;
 540         }
 541
 542         icmd = &cmdiocb->iocb;
 543         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 544
 545                 /*
 546                  * As soon as  we send ACC, the remote NPort can
 547                  * start sending us data. Thus, for SLI4 we must
 548                  * resume the RPI before the ACC goes out.
 549                  */
 550                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 551                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 552                                 GFP_KERNEL);
 553                         if (elsiocb) {
 554
 555                                 /* Save info from cmd IOCB used in rsp */
 556                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 557                                         sizeof(struct lpfc_iocbq));
 558
 559                                 /* Save the ELS cmd */
 560                                 elsiocb->drvrTimeout = cmd;
 561
 562                                 lpfc_sli4_resume_rpi(ndlp,
 563                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 564                                 goto out;
 565                         }
 566                 }
 567
 568                 if (cmd == ELS_CMD_ADISC) {
 569                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 570                 } else {
 571                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 572                                 ndlp, NULL);
 573                 }
 574 out:
 575                 /* If we are authenticated, move to the proper state */
 576                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 577                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 578                 else
 579                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 580
 581                 return 1;
 582         }
 583         /* Reject this request because invalid parameters */
 584         stat.un.b.lsRjtRsvd0 = 0;
 585         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 586         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 587         stat.un.b.vendorUnique = 0;
 588         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 589
 590         /* 1 sec timeout */
 591         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 592
 593         spin_lock_irq(shost->host_lock);
 594         ndlp->nlp_flag |= NLP_DELAY_TMO;
 595         spin_unlock_irq(shost->host_lock);
 596         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 597         ndlp->nlp_prev_state = ndlp->nlp_state;
 598         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 599         return 0;
 600 }
 601
 602 static int
 603 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 604               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 605 {
 606         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 607         struct lpfc_hba    *phba = vport->phba;
 608         struct lpfc_vport **vports;
 609         int i, active_vlink_present = 0 ;
 610
 611         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 612         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 613          * PLOGIs during LOGO storms from a device.
 614          */
 615         spin_lock_irq(shost->host_lock);
 616         ndlp->nlp_flag |= NLP_LOGO_ACC;
 617         spin_unlock_irq(shost->host_lock);
 618         if (els_cmd == ELS_CMD_PRLO)
 619                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 620         else
 621                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 622         if (ndlp->nlp_DID == Fabric_DID) {
 623                 if (vport->port_state <= LPFC_FDISC)
 624                         goto out;
 625                 lpfc_linkdown_port(vport);
 626                 spin_lock_irq(shost->host_lock);
 627                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 628                 spin_unlock_irq(shost->host_lock);
 629                 vports = lpfc_create_vport_work_array(phba);
 630                 if (vports) {
 631                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 632                                         i++) {
 633                                 if ((!(vports[i]->fc_flag &
 634                                         FC_VPORT_LOGO_RCVD)) &&
 635                                         (vports[i]->port_state > LPFC_FDISC)) {
 636                                         active_vlink_present = 1;
 637                                         break;
 638                                 }
 639                         }
 640                         lpfc_destroy_vport_work_array(phba, vports);
 641                 }
 642
 643                 if (active_vlink_present) {
 644                         /*
 645                          * If there are other active VLinks present,
 646                          * re-instantiate the Vlink using FDISC.
 647                          */
 648                         mod_timer(&ndlp->nlp_delayfunc,
 649                                   jiffies + msecs_to_jiffies(1000));
 650                         spin_lock_irq(shost->host_lock);
 651                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 652                         spin_unlock_irq(shost->host_lock);
 653                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 654                         vport->port_state = LPFC_FDISC;
 655                 } else {
 656                         spin_lock_irq(shost->host_lock);
 657                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 658                         spin_unlock_irq(shost->host_lock);
 659                         lpfc_retry_pport_discovery(phba);
 660                 }
 661         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 662                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 663                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 664                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 665                 /* Only try to re-login if this is NOT a Fabric Node */
 666                 mod_timer(&ndlp->nlp_delayfunc,
 667                           jiffies + msecs_to_jiffies(1000 * 1));
 668                 spin_lock_irq(shost->host_lock);
 669                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 670                 spin_unlock_irq(shost->host_lock);
 671
 672                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 673         }
 674 out:
 675         ndlp->nlp_prev_state = ndlp->nlp_state;
 676         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 677
 678         spin_lock_irq(shost->host_lock);
 679         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 680         spin_unlock_irq(shost->host_lock);
 681         /* The driver has to wait until the ACC completes before it continues
 682          * processing the LOGO.  The action will resume in
 683          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 684          * unreg_login, the driver waits so the ACC does not get aborted.
 685          */
 686         return 0;
 687 }
 688
 689 static void
 690 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 691               struct lpfc_iocbq *cmdiocb)
 692 {
 693         struct lpfc_dmabuf *pcmd;
 694         uint32_t *lp;
 695         PRLI *npr;
 696         struct fc_rport *rport = ndlp->rport;
 697         u32 roles;
 698
 699         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 700         lp = (uint32_t *) pcmd->virt;
 701         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 702
 703         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 704         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 705         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 706         if (npr->prliType == PRLI_FCP_TYPE) {
 707                 if (npr->initiatorFunc)
 708                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 709                 if (npr->targetFunc) {
 710                         ndlp->nlp_type |= NLP_FCP_TARGET;
 711                         if (npr->writeXferRdyDis)
 712                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 713                 }
 714                 if (npr->Retry)
 715                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 716         }
 717         if (rport) {
 718                 /* We need to update the rport role values */
 719                 roles = FC_RPORT_ROLE_UNKNOWN;
 720                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 721                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 722                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 723                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 724
 725                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 726                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 727                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 728
 729                 fc_remote_port_rolechg(rport, roles);
 730         }
 731 }
 732
 733 static uint32_t
 734 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 735 {
 736         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 737
 738         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 739                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 740                 return 0;
 741         }
 742
 743         if (!(vport->fc_flag & FC_PT2PT)) {
 744                 /* Check config parameter use-adisc or FCP-2 */
 745                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 746                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 747                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 748                         spin_lock_irq(shost->host_lock);
 749                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 750                         spin_unlock_irq(shost->host_lock);
 751                         return 1;
 752                 }
 753         }
 754         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 755         lpfc_unreg_rpi(vport, ndlp);
 756         return 0;
 757 }
 758
 759 /**
 760  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 761  * @phba : Pointer to lpfc_hba structure.
 762  * @vport: Pointer to lpfc_vport structure.
 763  * @rpi  : rpi to be release.
 764  *
 765  * This function will send a unreg_login mailbox command to the firmware
 766  * to release a rpi.
 767  **/
 768 void
 769 lpfc_release_rpi(struct lpfc_hba *phba,
 770                 struct lpfc_vport *vport,
 771                 uint16_t rpi)
 772 {
 773         LPFC_MBOXQ_t *pmb;
 774         int rc;
 775
 776         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 777                         GFP_KERNEL);
 778         if (!pmb)
 779                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 780                         "2796 mailbox memory allocation failed \n");
 781         else {
 782                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 783                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 784                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 785                 if (rc == MBX_NOT_FINISHED)
 786                         mempool_free(pmb, phba->mbox_mem_pool);
 787         }
 788 }
 789
 790 static uint32_t
 791 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 792                   void *arg, uint32_t evt)
 793 {
 794         struct lpfc_hba *phba;
 795         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 796         MAILBOX_t *mb;
 797         uint16_t rpi;
 798
 799         phba = vport->phba;
 800         /* Release the RPI if reglogin completing */
 801         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 802                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 803                 (!pmb->u.mb.mbxStatus)) {
 804                 mb = &pmb->u.mb;
 805                 rpi = pmb->u.mb.un.varWords[0];
 806                 lpfc_release_rpi(phba, vport, rpi);
 807         }
 808         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 809                          "0271 Illegal State Transition: node x%x "
 810                          "event x%x, state x%x Data: x%x x%x\n",
 811                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 812                          ndlp->nlp_flag);
 813         return ndlp->nlp_state;
 814 }
 815
 816 static uint32_t
 817 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 818                   void *arg, uint32_t evt)
 819 {
 820         /* This transition is only legal if we previously
 821          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 822          * working on the same NPortID, do nothing for this thread
 823          * to stop it.
 824          */
 825         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 826                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 827                          "0272 Illegal State Transition: node x%x "
 828                          "event x%x, state x%x Data: x%x x%x\n",
 829                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 830                          ndlp->nlp_flag);
 831         }
 832         return ndlp->nlp_state;
 833 }
 834
 835 /* Start of Discovery State Machine routines */
 836
 837 static uint32_t
 838 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 839                            void *arg, uint32_t evt)
 840 {
 841         struct lpfc_iocbq *cmdiocb;
 842
 843         cmdiocb = (struct lpfc_iocbq *) arg;
 844
 845         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 846                 return ndlp->nlp_state;
 847         }
 848         return NLP_STE_FREED_NODE;
 849 }
 850
 851 static uint32_t
 852 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 853                          void *arg, uint32_t evt)
 854 {
 855         lpfc_issue_els_logo(vport, ndlp, 0);
 856         return ndlp->nlp_state;
 857 }
 858
 859 static uint32_t
 860 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 861                           void *arg, uint32_t evt)
 862 {
 863         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 864         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 865
 866         spin_lock_irq(shost->host_lock);
 867         ndlp->nlp_flag |= NLP_LOGO_ACC;
 868         spin_unlock_irq(shost->host_lock);
 869         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 870
 871         return ndlp->nlp_state;
 872 }
 873
 874 static uint32_t
 875 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 876                            void *arg, uint32_t evt)
 877 {
 878         return NLP_STE_FREED_NODE;
 879 }
 880
 881 static uint32_t
 882 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 883                            void *arg, uint32_t evt)
 884 {
 885         return NLP_STE_FREED_NODE;
 886 }
 887
 888 static uint32_t
 889 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 890                         struct lpfc_nodelist *ndlp,
 891                            void *arg, uint32_t evt)
 892 {
 893         return ndlp->nlp_state;
 894 }
 895
 896 static uint32_t
 897 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 898                            void *arg, uint32_t evt)
 899 {
 900         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 901         struct lpfc_hba   *phba = vport->phba;
 902         struct lpfc_iocbq *cmdiocb = arg;
 903         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 904         uint32_t *lp = (uint32_t *) pcmd->virt;
 905         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 906         struct ls_rjt stat;
 907         int port_cmp;
 908
 909         memset(&stat, 0, sizeof (struct ls_rjt));
 910
 911         /* For a PLOGI, we only accept if our portname is less
 912          * than the remote portname.
 913          */
 914         phba->fc_stat.elsLogiCol++;
 915         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 916                           sizeof(struct lpfc_name));
 917
 918         if (port_cmp >= 0) {
 919                 /* Reject this request because the remote node will accept
 920                    ours */
 921                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 922                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 923                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 924                         NULL);
 925         } else {
 926                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 927                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 928                     (vport->num_disc_nodes)) {
 929                         spin_lock_irq(shost->host_lock);
 930                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 931                         spin_unlock_irq(shost->host_lock);
 932                         /* Check if there are more PLOGIs to be sent */
 933                         lpfc_more_plogi(vport);
 934                         if (vport->num_disc_nodes == 0) {
 935                                 spin_lock_irq(shost->host_lock);
 936                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 937                                 spin_unlock_irq(shost->host_lock);
 938                                 lpfc_can_disctmo(vport);
 939                                 lpfc_end_rscn(vport);
 940                         }
 941                 }
 942         } /* If our portname was less */
 943
 944         return ndlp->nlp_state;
 945 }
 946
 947 static uint32_t
 948 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 949                           void *arg, uint32_t evt)
 950 {
 951         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 952         struct ls_rjt     stat;
 953
 954         memset(&stat, 0, sizeof (struct ls_rjt));
 955         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 956         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 957         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 958         return ndlp->nlp_state;
 959 }
 960
 961 static uint32_t
 962 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 963                           void *arg, uint32_t evt)
 964 {
 965         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 966
 967                                 /* software abort outstanding PLOGI */
 968         lpfc_els_abort(vport->phba, ndlp);
 969
 970         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 971         return ndlp->nlp_state;
 972 }
 973
 974 static uint32_t
 975 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 976                          void *arg, uint32_t evt)
 977 {
 978         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 979         struct lpfc_hba   *phba = vport->phba;
 980         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 981
 982         /* software abort outstanding PLOGI */
 983         lpfc_els_abort(phba, ndlp);
 984
 985         if (evt == NLP_EVT_RCV_LOGO) {
 986                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 987         } else {
 988                 lpfc_issue_els_logo(vport, ndlp, 0);
 989         }
 990
 991         /* Put ndlp in npr state set plogi timer for 1 sec */
 992         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
 993         spin_lock_irq(shost->host_lock);
 994         ndlp->nlp_flag |= NLP_DELAY_TMO;
 995         spin_unlock_irq(shost->host_lock);
 996         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 997         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 998         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 999
1000         return ndlp->nlp_state;
1001 }
1002
1003 static uint32_t
1004 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1005                             struct lpfc_nodelist *ndlp,
1006                             void *arg,
1007                             uint32_t evt)
1008 {
1009         struct lpfc_hba    *phba = vport->phba;
1010         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1011         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1012         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1013         uint32_t *lp;
1014         IOCB_t *irsp;
1015         struct serv_parm *sp;
1016         LPFC_MBOXQ_t *mbox;
1017
1018         cmdiocb = (struct lpfc_iocbq *) arg;
1019         rspiocb = cmdiocb->context_un.rsp_iocb;
1020
1021         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1022                 /* Recovery from PLOGI collision logic */
1023                 return ndlp->nlp_state;
1024         }
1025
1026         irsp = &rspiocb->iocb;
1027
1028         if (irsp->ulpStatus)
1029                 goto out;
1030
1031         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1032
1033         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1034         if (!prsp)
1035                 goto out;
1036
1037         lp = (uint32_t *) prsp->virt;
1038         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1039
1040         /* Some switches have FDMI servers returning 0 for WWN */
1041         if ((ndlp->nlp_DID != FDMI_DID) &&
1042                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1043                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1044                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1045                                  "0142 PLOGI RSP: Invalid WWN.\n");
1046                 goto out;
1047         }
1048         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1049                 goto out;
1050         /* PLOGI chkparm OK */
1051         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1052                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1053                          ndlp->nlp_DID, ndlp->nlp_state,
1054                          ndlp->nlp_flag, ndlp->nlp_rpi);
1055         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1056                 ndlp->nlp_fcp_info |= CLASS2;
1057         else
1058                 ndlp->nlp_fcp_info |= CLASS3;
1059
1060         ndlp->nlp_class_sup = 0;
1061         if (sp->cls1.classValid)
1062                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1063         if (sp->cls2.classValid)
1064                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1065         if (sp->cls3.classValid)
1066                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1067         if (sp->cls4.classValid)
1068                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1069         ndlp->nlp_maxframe =
1070                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1071
1072         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1073         if (!mbox) {
1074                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1075                         "0133 PLOGI: no memory for reg_login "
1076                         "Data: x%x x%x x%x x%x\n",
1077                         ndlp->nlp_DID, ndlp->nlp_state,
1078                         ndlp->nlp_flag, ndlp->nlp_rpi);
1079                 goto out;
1080         }
1081
1082         lpfc_unreg_rpi(vport, ndlp);
1083
1084         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1085                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1086                 switch (ndlp->nlp_DID) {
1087                 case NameServer_DID:
1088                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1089                         break;
1090                 case FDMI_DID:
1091                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1092                         break;
1093                 default:
1094                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1095                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1096                 }
1097                 mbox->context2 = lpfc_nlp_get(ndlp);
1098                 mbox->vport = vport;
1099                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1100                     != MBX_NOT_FINISHED) {
1101                         lpfc_nlp_set_state(vport, ndlp,
1102                                            NLP_STE_REG_LOGIN_ISSUE);
1103                         return ndlp->nlp_state;
1104                 }
1105                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1106                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1107                 /* decrement node reference count to the failed mbox
1108                  * command
1109                  */
1110                 lpfc_nlp_put(ndlp);
1111                 mp = (struct lpfc_dmabuf *) mbox->context1;
1112                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1113                 kfree(mp);
1114                 mempool_free(mbox, phba->mbox_mem_pool);
1115
1116                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1117                                  "0134 PLOGI: cannot issue reg_login "
1118                                  "Data: x%x x%x x%x x%x\n",
1119                                  ndlp->nlp_DID, ndlp->nlp_state,
1120                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1121         } else {
1122                 mempool_free(mbox, phba->mbox_mem_pool);
1123
1124                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1125                                  "0135 PLOGI: cannot format reg_login "
1126                                  "Data: x%x x%x x%x x%x\n",
1127                                  ndlp->nlp_DID, ndlp->nlp_state,
1128                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1129         }
1130
1131
1132 out:
1133         if (ndlp->nlp_DID == NameServer_DID) {
1134                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1135                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1136                                  "0261 Cannot Register NameServer login\n");
1137         }
1138
1139         /*
1140         ** In case the node reference counter does not go to zero, ensure that
1141         ** the stale state for the node is not processed.
1142         */
1143
1144         ndlp->nlp_prev_state = ndlp->nlp_state;
1145         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1146         spin_lock_irq(shost->host_lock);
1147         ndlp->nlp_flag |= NLP_DEFER_RM;
1148         spin_unlock_irq(shost->host_lock);
1149         return NLP_STE_FREED_NODE;
1150 }
1151
1152 static uint32_t
1153 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1154                            void *arg, uint32_t evt)
1155 {
1156         return ndlp->nlp_state;
1157 }
1158
1159 static uint32_t
1160 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1161         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1162 {
1163         struct lpfc_hba *phba;
1164         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1165         MAILBOX_t *mb = &pmb->u.mb;
1166         uint16_t rpi;
1167
1168         phba = vport->phba;
1169         /* Release the RPI */
1170         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1171                 !mb->mbxStatus) {
1172                 rpi = pmb->u.mb.un.varWords[0];
1173                 lpfc_release_rpi(phba, vport, rpi);
1174         }
1175         return ndlp->nlp_state;
1176 }
1177
1178 static uint32_t
1179 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1180                            void *arg, uint32_t evt)
1181 {
1182         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1183
1184         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1185                 spin_lock_irq(shost->host_lock);
1186                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1187                 spin_unlock_irq(shost->host_lock);
1188                 return ndlp->nlp_state;
1189         } else {
1190                 /* software abort outstanding PLOGI */
1191                 lpfc_els_abort(vport->phba, ndlp);
1192
1193                 lpfc_drop_node(vport, ndlp);
1194                 return NLP_STE_FREED_NODE;
1195         }
1196 }
1197
1198 static uint32_t
1199 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1200                               struct lpfc_nodelist *ndlp,
1201                               void *arg,
1202                               uint32_t evt)
1203 {
1204         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1205         struct lpfc_hba  *phba = vport->phba;
1206
1207         /* Don't do anything that will mess up processing of the
1208          * previous RSCN.
1209          */
1210         if (vport->fc_flag & FC_RSCN_DEFERRED)
1211                 return ndlp->nlp_state;
1212
1213         /* software abort outstanding PLOGI */
1214         lpfc_els_abort(phba, ndlp);
1215
1216         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1217         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1218         spin_lock_irq(shost->host_lock);
1219         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1220         spin_unlock_irq(shost->host_lock);
1221
1222         return ndlp->nlp_state;
1223 }
1224
1225 static uint32_t
1226 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1227                            void *arg, uint32_t evt)
1228 {
1229         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1230         struct lpfc_hba   *phba = vport->phba;
1231         struct lpfc_iocbq *cmdiocb;
1232
1233         /* software abort outstanding ADISC */
1234         lpfc_els_abort(phba, ndlp);
1235
1236         cmdiocb = (struct lpfc_iocbq *) arg;
1237
1238         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1239                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1240                         spin_lock_irq(shost->host_lock);
1241                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1242                         spin_unlock_irq(shost->host_lock);
1243                         if (vport->num_disc_nodes)
1244                                 lpfc_more_adisc(vport);
1245                 }
1246                 return ndlp->nlp_state;
1247         }
1248         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1249         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1250         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1251
1252         return ndlp->nlp_state;
1253 }
1254
1255 static uint32_t
1256 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1257                           void *arg, uint32_t evt)
1258 {
1259         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1260
1261         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1262         return ndlp->nlp_state;
1263 }
1264
1265 static uint32_t
1266 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1267                           void *arg, uint32_t evt)
1268 {
1269         struct lpfc_hba *phba = vport->phba;
1270         struct lpfc_iocbq *cmdiocb;
1271
1272         cmdiocb = (struct lpfc_iocbq *) arg;
1273
1274         /* software abort outstanding ADISC */
1275         lpfc_els_abort(phba, ndlp);
1276
1277         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1278         return ndlp->nlp_state;
1279 }
1280
1281 static uint32_t
1282 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1283                             struct lpfc_nodelist *ndlp,
1284                             void *arg, uint32_t evt)
1285 {
1286         struct lpfc_iocbq *cmdiocb;
1287
1288         cmdiocb = (struct lpfc_iocbq *) arg;
1289
1290         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1291         return ndlp->nlp_state;
1292 }
1293
1294 static uint32_t
1295 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1296                           void *arg, uint32_t evt)
1297 {
1298         struct lpfc_iocbq *cmdiocb;
1299
1300         cmdiocb = (struct lpfc_iocbq *) arg;
1301
1302         /* Treat like rcv logo */
1303         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1304         return ndlp->nlp_state;
1305 }
1306
1307 static uint32_t
1308 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1309                             struct lpfc_nodelist *ndlp,
1310                             void *arg, uint32_t evt)
1311 {
1312         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1313         struct lpfc_hba   *phba = vport->phba;
1314         struct lpfc_iocbq *cmdiocb, *rspiocb;
1315         IOCB_t *irsp;
1316         ADISC *ap;
1317         int rc;
1318
1319         cmdiocb = (struct lpfc_iocbq *) arg;
1320         rspiocb = cmdiocb->context_un.rsp_iocb;
1321
1322         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1323         irsp = &rspiocb->iocb;
1324
1325         if ((irsp->ulpStatus) ||
1326             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1327                 /* 1 sec timeout */
1328                 mod_timer(&ndlp->nlp_delayfunc,
1329                           jiffies + msecs_to_jiffies(1000));
1330                 spin_lock_irq(shost->host_lock);
1331                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1332                 spin_unlock_irq(shost->host_lock);
1333                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1334
1335                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1336                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1337
1338                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1339                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1340                 lpfc_unreg_rpi(vport, ndlp);
1341                 return ndlp->nlp_state;
1342         }
1343
1344         if (phba->sli_rev == LPFC_SLI_REV4) {
1345                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1346                 if (rc) {
1347                         /* Stay in state and retry. */
1348                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1349                         return ndlp->nlp_state;
1350                 }
1351         }
1352
1353         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1354                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1355                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1356         } else {
1357                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1358                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1359         }
1360
1361         return ndlp->nlp_state;
1362 }
1363
1364 static uint32_t
1365 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1366                            void *arg, uint32_t evt)
1367 {
1368         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1369
1370         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1371                 spin_lock_irq(shost->host_lock);
1372                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1373                 spin_unlock_irq(shost->host_lock);
1374                 return ndlp->nlp_state;
1375         } else {
1376                 /* software abort outstanding ADISC */
1377                 lpfc_els_abort(vport->phba, ndlp);
1378
1379                 lpfc_drop_node(vport, ndlp);
1380                 return NLP_STE_FREED_NODE;
1381         }
1382 }
1383
1384 static uint32_t
1385 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1386                               struct lpfc_nodelist *ndlp,
1387                               void *arg,
1388                               uint32_t evt)
1389 {
1390         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1391         struct lpfc_hba  *phba = vport->phba;
1392
1393         /* Don't do anything that will mess up processing of the
1394          * previous RSCN.
1395          */
1396         if (vport->fc_flag & FC_RSCN_DEFERRED)
1397                 return ndlp->nlp_state;
1398
1399         /* software abort outstanding ADISC */
1400         lpfc_els_abort(phba, ndlp);
1401
1402         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1403         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1404         spin_lock_irq(shost->host_lock);
1405         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1406         spin_unlock_irq(shost->host_lock);
1407         lpfc_disc_set_adisc(vport, ndlp);
1408         return ndlp->nlp_state;
1409 }
1410
1411 static uint32_t
1412 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1413                               struct lpfc_nodelist *ndlp,
1414                               void *arg,
1415                               uint32_t evt)
1416 {
1417         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1418
1419         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1420         return ndlp->nlp_state;
1421 }
1422
1423 static uint32_t
1424 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1425                              struct lpfc_nodelist *ndlp,
1426                              void *arg,
1427                              uint32_t evt)
1428 {
1429         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1430
1431         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1432         return ndlp->nlp_state;
1433 }
1434
1435 static uint32_t
1436 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1437                              struct lpfc_nodelist *ndlp,
1438                              void *arg,
1439                              uint32_t evt)
1440 {
1441         struct lpfc_hba   *phba = vport->phba;
1442         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1443         LPFC_MBOXQ_t      *mb;
1444         LPFC_MBOXQ_t      *nextmb;
1445         struct lpfc_dmabuf *mp;
1446
1447         cmdiocb = (struct lpfc_iocbq *) arg;
1448
1449         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1450         if ((mb = phba->sli.mbox_active)) {
1451                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1452                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1453                         lpfc_nlp_put(ndlp);
1454                         mb->context2 = NULL;
1455                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1456                 }
1457         }
1458
1459         spin_lock_irq(&phba->hbalock);
1460         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1461                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1462                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1463                         mp = (struct lpfc_dmabuf *) (mb->context1);
1464                         if (mp) {
1465                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1466                                 kfree(mp);
1467                         }
1468                         lpfc_nlp_put(ndlp);
1469                         list_del(&mb->list);
1470                         phba->sli.mboxq_cnt--;
1471                         mempool_free(mb, phba->mbox_mem_pool);
1472                 }
1473         }
1474         spin_unlock_irq(&phba->hbalock);
1475
1476         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1477         return ndlp->nlp_state;
1478 }
1479
1480 static uint32_t
1481 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1482                                struct lpfc_nodelist *ndlp,
1483                                void *arg,
1484                                uint32_t evt)
1485 {
1486         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1487
1488         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1489         return ndlp->nlp_state;
1490 }
1491
1492 static uint32_t
1493 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1494                              struct lpfc_nodelist *ndlp,
1495                              void *arg,
1496                              uint32_t evt)
1497 {
1498         struct lpfc_iocbq *cmdiocb;
1499
1500         cmdiocb = (struct lpfc_iocbq *) arg;
1501         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1502         return ndlp->nlp_state;
1503 }
1504
1505 static uint32_t
1506 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1507                                   struct lpfc_nodelist *ndlp,
1508                                   void *arg,
1509                                   uint32_t evt)
1510 {
1511         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1512         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1513         MAILBOX_t *mb = &pmb->u.mb;
1514         uint32_t did  = mb->un.varWords[1];
1515
1516         if (mb->mbxStatus) {
1517                 /* RegLogin failed */
1518                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1519                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1520                                  "x%x\n",
1521                                  did, mb->mbxStatus, vport->port_state,
1522                                  mb->un.varRegLogin.vpi,
1523                                  mb->un.varRegLogin.rpi);
1524                 /*
1525                  * If RegLogin failed due to lack of HBA resources do not
1526                  * retry discovery.
1527                  */
1528                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
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                 /* Put ndlp in npr state set plogi timer for 1 sec */
1535                 mod_timer(&ndlp->nlp_delayfunc,
1536                           jiffies + msecs_to_jiffies(1000 * 1));
1537                 spin_lock_irq(shost->host_lock);
1538                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1539                 spin_unlock_irq(shost->host_lock);
1540                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1541
1542                 lpfc_issue_els_logo(vport, ndlp, 0);
1543                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1544                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1545                 return ndlp->nlp_state;
1546         }
1547
1548         /* SLI4 ports have preallocated logical rpis. */
1549         if (vport->phba->sli_rev < LPFC_SLI_REV4)
1550                 ndlp->nlp_rpi = mb->un.varWords[0];
1551
1552         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1553
1554         /* Only if we are not a fabric nport do we issue PRLI */
1555         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1556                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1557                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1558                 lpfc_issue_els_prli(vport, ndlp, 0);
1559         } else {
1560                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1561                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1562         }
1563         return ndlp->nlp_state;
1564 }
1565
1566 static uint32_t
1567 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1568                               struct lpfc_nodelist *ndlp,
1569                               void *arg,
1570                               uint32_t evt)
1571 {
1572         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1573
1574         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1575                 spin_lock_irq(shost->host_lock);
1576                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1577                 spin_unlock_irq(shost->host_lock);
1578                 return ndlp->nlp_state;
1579         } else {
1580                 lpfc_drop_node(vport, ndlp);
1581                 return NLP_STE_FREED_NODE;
1582         }
1583 }
1584
1585 static uint32_t
1586 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1587                                  struct lpfc_nodelist *ndlp,
1588                                  void *arg,
1589                                  uint32_t evt)
1590 {
1591         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1592
1593         /* Don't do anything that will mess up processing of the
1594          * previous RSCN.
1595          */
1596         if (vport->fc_flag & FC_RSCN_DEFERRED)
1597                 return ndlp->nlp_state;
1598
1599         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1600         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1601         spin_lock_irq(shost->host_lock);
1602         ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1603         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1604         spin_unlock_irq(shost->host_lock);
1605         lpfc_disc_set_adisc(vport, ndlp);
1606         return ndlp->nlp_state;
1607 }
1608
1609 static uint32_t
1610 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1611                           void *arg, uint32_t evt)
1612 {
1613         struct lpfc_iocbq *cmdiocb;
1614
1615         cmdiocb = (struct lpfc_iocbq *) arg;
1616
1617         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1618         return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1623                          void *arg, uint32_t evt)
1624 {
1625         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1626
1627         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1628         return ndlp->nlp_state;
1629 }
1630
1631 static uint32_t
1632 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1633                          void *arg, uint32_t evt)
1634 {
1635         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1636
1637         /* Software abort outstanding PRLI before sending acc */
1638         lpfc_els_abort(vport->phba, ndlp);
1639
1640         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1641         return ndlp->nlp_state;
1642 }
1643
1644 static uint32_t
1645 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1646                            void *arg, uint32_t evt)
1647 {
1648         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1649
1650         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1651         return ndlp->nlp_state;
1652 }
1653
1654 /* This routine is envoked when we rcv a PRLO request from a nport
1655  * we are logged into.  We should send back a PRLO rsp setting the
1656  * appropriate bits.
1657  * NEXT STATE = PRLI_ISSUE
1658  */
1659 static uint32_t
1660 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1661                          void *arg, uint32_t evt)
1662 {
1663         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1664
1665         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1666         return ndlp->nlp_state;
1667 }
1668
1669 static uint32_t
1670 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1671                           void *arg, uint32_t evt)
1672 {
1673         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1674         struct lpfc_iocbq *cmdiocb, *rspiocb;
1675         struct lpfc_hba   *phba = vport->phba;
1676         IOCB_t *irsp;
1677         PRLI *npr;
1678
1679         cmdiocb = (struct lpfc_iocbq *) arg;
1680         rspiocb = cmdiocb->context_un.rsp_iocb;
1681         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1682
1683         irsp = &rspiocb->iocb;
1684         if (irsp->ulpStatus) {
1685                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1686                     vport->cfg_restrict_login) {
1687                         goto out;
1688                 }
1689                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1690                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1691                 return ndlp->nlp_state;
1692         }
1693
1694         /* Check out PRLI rsp */
1695         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1696         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1697         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1698         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1699             (npr->prliType == PRLI_FCP_TYPE)) {
1700                 if (npr->initiatorFunc)
1701                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1702                 if (npr->targetFunc) {
1703                         ndlp->nlp_type |= NLP_FCP_TARGET;
1704                         if (npr->writeXferRdyDis)
1705                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1706                 }
1707                 if (npr->Retry)
1708                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1709         }
1710         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1711             (vport->port_type == LPFC_NPIV_PORT) &&
1712              vport->cfg_restrict_login) {
1713 out:
1714                 spin_lock_irq(shost->host_lock);
1715                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1716                 spin_unlock_irq(shost->host_lock);
1717                 lpfc_issue_els_logo(vport, ndlp, 0);
1718
1719                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1720                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1721                 return ndlp->nlp_state;
1722         }
1723
1724         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1725         if (ndlp->nlp_type & NLP_FCP_TARGET)
1726                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1727         else
1728                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1729         return ndlp->nlp_state;
1730 }
1731
1732 /*! lpfc_device_rm_prli_issue
1733  *
1734  * \pre
1735  * \post
1736  * \param   phba
1737  * \param   ndlp
1738  * \param   arg
1739  * \param   evt
1740  * \return  uint32_t
1741  *
1742  * \b Description:
1743  *    This routine is envoked when we a request to remove a nport we are in the
1744  *    process of PRLIing. We should software abort outstanding prli, unreg
1745  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1746  *    on plogi list so it can be freed when LOGO completes.
1747  *
1748  */
1749
1750 static uint32_t
1751 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1752                           void *arg, uint32_t evt)
1753 {
1754         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1755
1756         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1757                 spin_lock_irq(shost->host_lock);
1758                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1759                 spin_unlock_irq(shost->host_lock);
1760                 return ndlp->nlp_state;
1761         } else {
1762                 /* software abort outstanding PLOGI */
1763                 lpfc_els_abort(vport->phba, ndlp);
1764
1765                 lpfc_drop_node(vport, ndlp);
1766                 return NLP_STE_FREED_NODE;
1767         }
1768 }
1769
1770
1771 /*! lpfc_device_recov_prli_issue
1772  *
1773  * \pre
1774  * \post
1775  * \param   phba
1776  * \param   ndlp
1777  * \param   arg
1778  * \param   evt
1779  * \return  uint32_t
1780  *
1781  * \b Description:
1782  *    The routine is envoked when the state of a device is unknown, like
1783  *    during a link down. We should remove the nodelist entry from the
1784  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1785  *    outstanding PRLI command, then free the node entry.
1786  */
1787 static uint32_t
1788 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1789                              struct lpfc_nodelist *ndlp,
1790                              void *arg,
1791                              uint32_t evt)
1792 {
1793         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1794         struct lpfc_hba  *phba = vport->phba;
1795
1796         /* Don't do anything that will mess up processing of the
1797          * previous RSCN.
1798          */
1799         if (vport->fc_flag & FC_RSCN_DEFERRED)
1800                 return ndlp->nlp_state;
1801
1802         /* software abort outstanding PRLI */
1803         lpfc_els_abort(phba, ndlp);
1804
1805         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1806         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1807         spin_lock_irq(shost->host_lock);
1808         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1809         spin_unlock_irq(shost->host_lock);
1810         lpfc_disc_set_adisc(vport, ndlp);
1811         return ndlp->nlp_state;
1812 }
1813
1814 static uint32_t
1815 lpfc_rcv_plogi_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_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1830                          void *arg, uint32_t evt)
1831 {
1832         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1833         struct ls_rjt     stat;
1834
1835         memset(&stat, 0, sizeof(struct ls_rjt));
1836         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1837         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1838         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1839         return ndlp->nlp_state;
1840 }
1841
1842 static uint32_t
1843 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1844                          void *arg, uint32_t evt)
1845 {
1846         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1847         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1848
1849         spin_lock_irq(shost->host_lock);
1850         ndlp->nlp_flag &= NLP_LOGO_ACC;
1851         spin_unlock_irq(shost->host_lock);
1852         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1853         return ndlp->nlp_state;
1854 }
1855
1856 static uint32_t
1857 lpfc_rcv_padisc_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_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1872                          void *arg, uint32_t evt)
1873 {
1874         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1875         struct ls_rjt     stat;
1876
1877         memset(&stat, 0, sizeof(struct ls_rjt));
1878         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1879         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1880         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1881         return ndlp->nlp_state;
1882 }
1883
1884 static uint32_t
1885 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1886                           void *arg, uint32_t evt)
1887 {
1888         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1889
1890         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1891         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1892         spin_lock_irq(shost->host_lock);
1893         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1894         spin_unlock_irq(shost->host_lock);
1895         lpfc_disc_set_adisc(vport, ndlp);
1896         return ndlp->nlp_state;
1897 }
1898
1899 static uint32_t
1900 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1901                           void *arg, uint32_t evt)
1902 {
1903         /*
1904          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
1905          * timed out and is calling for Device Remove.  In this case, the LOGO
1906          * must be allowed to complete in state LOGO_ISSUE so that the rpi
1907          * and other NLP flags are correctly cleaned up.
1908          */
1909         return ndlp->nlp_state;
1910 }
1911
1912 static uint32_t
1913 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1914                              struct lpfc_nodelist *ndlp,
1915                              void *arg, uint32_t evt)
1916 {
1917         /*
1918          * Device Recovery events have no meaning for a node with a LOGO
1919          * outstanding.  The LOGO has to complete first and handle the
1920          * node from that point.
1921          */
1922         return ndlp->nlp_state;
1923 }
1924
1925 static uint32_t
1926 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1927                           void *arg, uint32_t evt)
1928 {
1929         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1930
1931         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1932         return ndlp->nlp_state;
1933 }
1934
1935 static uint32_t
1936 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1937                          void *arg, uint32_t evt)
1938 {
1939         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1940
1941         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1942         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1943         return ndlp->nlp_state;
1944 }
1945
1946 static uint32_t
1947 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1948                          void *arg, uint32_t evt)
1949 {
1950         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1951
1952         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1953         return ndlp->nlp_state;
1954 }
1955
1956 static uint32_t
1957 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1958                            void *arg, uint32_t evt)
1959 {
1960         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1961
1962         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1963         return ndlp->nlp_state;
1964 }
1965
1966 static uint32_t
1967 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1968                          void *arg, uint32_t evt)
1969 {
1970         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1971
1972         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1973         return ndlp->nlp_state;
1974 }
1975
1976 static uint32_t
1977 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1978                              struct lpfc_nodelist *ndlp,
1979                              void *arg,
1980                              uint32_t evt)
1981 {
1982         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1983
1984         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1985         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1986         spin_lock_irq(shost->host_lock);
1987         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1988         spin_unlock_irq(shost->host_lock);
1989         lpfc_disc_set_adisc(vport, ndlp);
1990
1991         return ndlp->nlp_state;
1992 }
1993
1994 static uint32_t
1995 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1996                            void *arg, uint32_t evt)
1997 {
1998         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1999
2000         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2001         return ndlp->nlp_state;
2002 }
2003
2004 static uint32_t
2005 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2006                           void *arg, uint32_t evt)
2007 {
2008         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2009
2010         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2011         return ndlp->nlp_state;
2012 }
2013
2014 static uint32_t
2015 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2016                           void *arg, uint32_t evt)
2017 {
2018         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2019
2020         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2021         return ndlp->nlp_state;
2022 }
2023
2024 static uint32_t
2025 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2026                             struct lpfc_nodelist *ndlp,
2027                             void *arg, uint32_t evt)
2028 {
2029         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2030
2031         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2032         return ndlp->nlp_state;
2033 }
2034
2035 static uint32_t
2036 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2037                           void *arg, uint32_t evt)
2038 {
2039         struct lpfc_hba  *phba = vport->phba;
2040         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2041
2042         /* flush the target */
2043         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2044                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2045
2046         /* Treat like rcv logo */
2047         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2048         return ndlp->nlp_state;
2049 }
2050
2051 static uint32_t
2052 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2053                               struct lpfc_nodelist *ndlp,
2054                               void *arg,
2055                               uint32_t evt)
2056 {
2057         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2058
2059         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2060         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2061         spin_lock_irq(shost->host_lock);
2062         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2063         spin_unlock_irq(shost->host_lock);
2064         lpfc_disc_set_adisc(vport, ndlp);
2065         return ndlp->nlp_state;
2066 }
2067
2068 static uint32_t
2069 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2070                         void *arg, uint32_t evt)
2071 {
2072         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2073         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2074
2075         /* Ignore PLOGI if we have an outstanding LOGO */
2076         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2077                 return ndlp->nlp_state;
2078         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2079                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2080                 spin_lock_irq(shost->host_lock);
2081                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2082                 spin_unlock_irq(shost->host_lock);
2083         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2084                 /* send PLOGI immediately, move to PLOGI issue state */
2085                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2086                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2087                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2088                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2089                 }
2090         }
2091         return ndlp->nlp_state;
2092 }
2093
2094 static uint32_t
2095 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2096                        void *arg, uint32_t evt)
2097 {
2098         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2099         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2100         struct ls_rjt     stat;
2101
2102         memset(&stat, 0, sizeof (struct ls_rjt));
2103         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2104         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2105         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2106
2107         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2108                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2109                         spin_lock_irq(shost->host_lock);
2110                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2111                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2112                         spin_unlock_irq(shost->host_lock);
2113                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2114                         lpfc_issue_els_adisc(vport, ndlp, 0);
2115                 } else {
2116                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2117                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2118                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2119                 }
2120         }
2121         return ndlp->nlp_state;
2122 }
2123
2124 static uint32_t
2125 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2126                        void *arg, uint32_t evt)
2127 {
2128         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2129
2130         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2131         return ndlp->nlp_state;
2132 }
2133
2134 static uint32_t
2135 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2136                          void *arg, uint32_t evt)
2137 {
2138         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2139
2140         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2141         /*
2142          * Do not start discovery if discovery is about to start
2143          * or discovery in progress for this node. Starting discovery
2144          * here will affect the counting of discovery threads.
2145          */
2146         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2147             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2148                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2149                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2150                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2151                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2152                         lpfc_issue_els_adisc(vport, ndlp, 0);
2153                 } else {
2154                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2155                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2156                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2157                 }
2158         }
2159         return ndlp->nlp_state;
2160 }
2161
2162 static uint32_t
2163 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2164                        void *arg, uint32_t evt)
2165 {
2166         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2167         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2168
2169         spin_lock_irq(shost->host_lock);
2170         ndlp->nlp_flag |= NLP_LOGO_ACC;
2171         spin_unlock_irq(shost->host_lock);
2172
2173         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2174
2175         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2176                 mod_timer(&ndlp->nlp_delayfunc,
2177                           jiffies + msecs_to_jiffies(1000 * 1));
2178                 spin_lock_irq(shost->host_lock);
2179                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2180                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2181                 spin_unlock_irq(shost->host_lock);
2182                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2183         } else {
2184                 spin_lock_irq(shost->host_lock);
2185                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2186                 spin_unlock_irq(shost->host_lock);
2187         }
2188         return ndlp->nlp_state;
2189 }
2190
2191 static uint32_t
2192 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2193                          void *arg, uint32_t evt)
2194 {
2195         struct lpfc_iocbq *cmdiocb, *rspiocb;
2196         IOCB_t *irsp;
2197         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2198
2199         cmdiocb = (struct lpfc_iocbq *) arg;
2200         rspiocb = cmdiocb->context_un.rsp_iocb;
2201
2202         irsp = &rspiocb->iocb;
2203         if (irsp->ulpStatus) {
2204                 spin_lock_irq(shost->host_lock);
2205                 ndlp->nlp_flag |= NLP_DEFER_RM;
2206                 spin_unlock_irq(shost->host_lock);
2207                 return NLP_STE_FREED_NODE;
2208         }
2209         return ndlp->nlp_state;
2210 }
2211
2212 static uint32_t
2213 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2214                         void *arg, uint32_t evt)
2215 {
2216         struct lpfc_iocbq *cmdiocb, *rspiocb;
2217         IOCB_t *irsp;
2218
2219         cmdiocb = (struct lpfc_iocbq *) arg;
2220         rspiocb = cmdiocb->context_un.rsp_iocb;
2221
2222         irsp = &rspiocb->iocb;
2223         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2224                 lpfc_drop_node(vport, ndlp);
2225                 return NLP_STE_FREED_NODE;
2226         }
2227         return ndlp->nlp_state;
2228 }
2229
2230 static uint32_t
2231 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2232                         void *arg, uint32_t evt)
2233 {
2234         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2235
2236         /* For the fabric port just clear the fc flags. */
2237         if (ndlp->nlp_DID == Fabric_DID) {
2238                 spin_lock_irq(shost->host_lock);
2239                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2240                 spin_unlock_irq(shost->host_lock);
2241         }
2242         lpfc_unreg_rpi(vport, ndlp);
2243         return ndlp->nlp_state;
2244 }
2245
2246 static uint32_t
2247 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2248                          void *arg, uint32_t evt)
2249 {
2250         struct lpfc_iocbq *cmdiocb, *rspiocb;
2251         IOCB_t *irsp;
2252
2253         cmdiocb = (struct lpfc_iocbq *) arg;
2254         rspiocb = cmdiocb->context_un.rsp_iocb;
2255
2256         irsp = &rspiocb->iocb;
2257         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2258                 lpfc_drop_node(vport, ndlp);
2259                 return NLP_STE_FREED_NODE;
2260         }
2261         return ndlp->nlp_state;
2262 }
2263
2264 static uint32_t
2265 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2266                             struct lpfc_nodelist *ndlp,
2267                             void *arg, uint32_t evt)
2268 {
2269         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2270         MAILBOX_t    *mb = &pmb->u.mb;
2271
2272         if (!mb->mbxStatus) {
2273                 /* SLI4 ports have preallocated logical rpis. */
2274                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2275                         ndlp->nlp_rpi = mb->un.varWords[0];
2276                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2277         } else {
2278                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2279                         lpfc_drop_node(vport, ndlp);
2280                         return NLP_STE_FREED_NODE;
2281                 }
2282         }
2283         return ndlp->nlp_state;
2284 }
2285
2286 static uint32_t
2287 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2288                         void *arg, uint32_t evt)
2289 {
2290         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2291
2292         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2293                 spin_lock_irq(shost->host_lock);
2294                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2295                 spin_unlock_irq(shost->host_lock);
2296                 return ndlp->nlp_state;
2297         }
2298         lpfc_drop_node(vport, ndlp);
2299         return NLP_STE_FREED_NODE;
2300 }
2301
2302 static uint32_t
2303 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2304                            void *arg, uint32_t evt)
2305 {
2306         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2307
2308         /* Don't do anything that will mess up processing of the
2309          * previous RSCN.
2310          */
2311         if (vport->fc_flag & FC_RSCN_DEFERRED)
2312                 return ndlp->nlp_state;
2313
2314         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2315         spin_lock_irq(shost->host_lock);
2316         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2317         spin_unlock_irq(shost->host_lock);
2318         return ndlp->nlp_state;
2319 }
2320
2321
2322 /* This next section defines the NPort Discovery State Machine */
2323
2324 /* There are 4 different double linked lists nodelist entries can reside on.
2325  * The plogi list and adisc list are used when Link Up discovery or RSCN
2326  * processing is needed. Each list holds the nodes that we will send PLOGI
2327  * or ADISC on. These lists will keep track of what nodes will be effected
2328  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2329  * The unmapped_list will contain all nodes that we have successfully logged
2330  * into at the Fibre Channel level. The mapped_list will contain all nodes
2331  * that are mapped FCP targets.
2332  */
2333 /*
2334  * The bind list is a list of undiscovered (potentially non-existent) nodes
2335  * that we have saved binding information on. This information is used when
2336  * nodes transition from the unmapped to the mapped list.
2337  */
2338 /* For UNUSED_NODE state, the node has just been allocated .
2339  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2340  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2341  * and put on the unmapped list. For ADISC processing, the node is taken off
2342  * the ADISC list and placed on either the mapped or unmapped list (depending
2343  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2344  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2345  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2346  * node, the node is taken off the unmapped list. The binding list is checked
2347  * for a valid binding, or a binding is automatically assigned. If binding
2348  * assignment is unsuccessful, the node is left on the unmapped list. If
2349  * binding assignment is successful, the associated binding list entry (if
2350  * any) is removed, and the node is placed on the mapped list.
2351  */
2352 /*
2353  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2354  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2355  * expire, all effected nodes will receive a DEVICE_RM event.
2356  */
2357 /*
2358  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2359  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2360  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2361  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2362  * we will first process the ADISC list.  32 entries are processed initially and
2363  * ADISC is initited for each one.  Completions / Events for each node are
2364  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2365  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2366  * waiting, and the ADISC list count is identically 0, then we are done. For
2367  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2368  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2369  * list.  32 entries are processed initially and PLOGI is initited for each one.
2370  * Completions / Events for each node are funnelled thru the state machine.  As
2371  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2372  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2373  * indentically 0, then we are done. We have now completed discovery / RSCN
2374  * handling. Upon completion, ALL nodes should be on either the mapped or
2375  * unmapped lists.
2376  */
2377
2378 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2379      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2380         /* Action routine                  Event       Current State  */
2381         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2382         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2383         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2384         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2385         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2386         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2387         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2388         lpfc_disc_illegal,              /* CMPL_PRLI       */
2389         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2390         lpfc_disc_illegal,              /* CMPL_ADISC      */
2391         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2392         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2393         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2394
2395         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2396         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2397         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2398         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2399         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2400         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2401         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2402         lpfc_disc_illegal,              /* CMPL_PRLI       */
2403         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2404         lpfc_disc_illegal,              /* CMPL_ADISC      */
2405         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2406         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2407         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2408
2409         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2410         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2411         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2412         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2413         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2414         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2415         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2416         lpfc_disc_illegal,              /* CMPL_PRLI       */
2417         lpfc_disc_illegal,              /* CMPL_LOGO       */
2418         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2419         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2420         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2421         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2422
2423         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2424         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2425         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2426         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2427         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2428         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2429         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2430         lpfc_disc_illegal,              /* CMPL_PRLI       */
2431         lpfc_disc_illegal,              /* CMPL_LOGO       */
2432         lpfc_disc_illegal,              /* CMPL_ADISC      */
2433         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2434         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2435         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2436
2437         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2438         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2439         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2440         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2441         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2442         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2443         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2444         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2445         lpfc_disc_illegal,              /* CMPL_LOGO       */
2446         lpfc_disc_illegal,              /* CMPL_ADISC      */
2447         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2448         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2449         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2450
2451         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2452         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2453         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2454         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2455         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2456         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2457         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2458         lpfc_disc_illegal,              /* CMPL_PRLI       */
2459         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2460         lpfc_disc_illegal,              /* CMPL_ADISC      */
2461         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2462         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2463         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2464
2465         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2466         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2467         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2468         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2469         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2470         lpfc_rcv_prlo_unmap_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_unmap_node,   /* DEVICE_RECOVERY */
2478
2479         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2480         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2481         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2482         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2483         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2484         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2485         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2486         lpfc_disc_illegal,              /* CMPL_PRLI       */
2487         lpfc_disc_illegal,              /* CMPL_LOGO       */
2488         lpfc_disc_illegal,              /* CMPL_ADISC      */
2489         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2490         lpfc_disc_illegal,              /* DEVICE_RM       */
2491         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2492
2493         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2494         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2495         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2496         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2497         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2498         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2499         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2500         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2501         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2502         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2503         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2504         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2505         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2506 };
2507
2508 int
2509 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2510                         void *arg, uint32_t evt)
2511 {
2512         uint32_t cur_state, rc;
2513         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2514                          uint32_t);
2515         uint32_t got_ndlp = 0;
2516
2517         if (lpfc_nlp_get(ndlp))
2518                 got_ndlp = 1;
2519
2520         cur_state = ndlp->nlp_state;
2521
2522         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2523         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2524                          "0211 DSM in event x%x on NPort x%x in "
2525                          "state %d Data: x%x\n",
2526                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2527
2528         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2529                  "DSM in:          evt:%d ste:%d did:x%x",
2530                 evt, cur_state, ndlp->nlp_DID);
2531
2532         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2533         rc = (func) (vport, ndlp, arg, evt);
2534
2535         /* DSM out state <rc> on NPort <nlp_DID> */
2536         if (got_ndlp) {
2537                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2538                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2539                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2540
2541                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2542                         "DSM out:         ste:%d did:x%x flg:x%x",
2543                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2544                 /* Decrement the ndlp reference count held for this function */
2545                 lpfc_nlp_put(ndlp);
2546         } else {
2547                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2548                         "0213 DSM out state %d on NPort free\n", rc);
2549
2550                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2551                         "DSM out:         ste:%d did:x%x flg:x%x",
2552                         rc, 0, 0);
2553         }
2554
2555         return rc;
2556 }