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) 2004-2012 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/slab.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_sli4.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45
  46 /* Called to verify a rcv'ed ADISC was intended for us. */
  47 static int
  48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  49                  struct lpfc_name *nn, struct lpfc_name *pn)
  50 {
  51         /* First, we MUST have a RPI registered */
  52         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  53                 return 0;
  54
  55         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  56          * table entry for that node.
  57          */
  58         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  59                 return 0;
  60
  61         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  62                 return 0;
  63
  64         /* we match, return success */
  65         return 1;
  66 }
  67
  68 int
  69 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  70                  struct serv_parm *sp, uint32_t class, int flogi)
  71 {
  72         volatile struct serv_parm *hsp = &vport->fc_sparam;
  73         uint16_t hsp_value, ssp_value = 0;
  74
  75         /*
  76          * The receive data field size and buffer-to-buffer receive data field
  77          * size entries are 16 bits but are represented as two 8-bit fields in
  78          * the driver data structure to account for rsvd bits and other control
  79          * bits.  Reconstruct and compare the fields as a 16-bit values before
  80          * correcting the byte values.
  81          */
  82         if (sp->cls1.classValid) {
  83                 if (!flogi) {
  84                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  85                                      hsp->cls1.rcvDataSizeLsb);
  86                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  87                                      sp->cls1.rcvDataSizeLsb);
  88                         if (!ssp_value)
  89                                 goto bad_service_param;
  90                         if (ssp_value > hsp_value) {
  91                                 sp->cls1.rcvDataSizeLsb =
  92                                         hsp->cls1.rcvDataSizeLsb;
  93                                 sp->cls1.rcvDataSizeMsb =
  94                                         hsp->cls1.rcvDataSizeMsb;
  95                         }
  96                 }
  97         } else if (class == CLASS1)
  98                 goto bad_service_param;
  99         if (sp->cls2.classValid) {
 100                 if (!flogi) {
 101                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 102                                      hsp->cls2.rcvDataSizeLsb);
 103                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 104                                      sp->cls2.rcvDataSizeLsb);
 105                         if (!ssp_value)
 106                                 goto bad_service_param;
 107                         if (ssp_value > hsp_value) {
 108                                 sp->cls2.rcvDataSizeLsb =
 109                                         hsp->cls2.rcvDataSizeLsb;
 110                                 sp->cls2.rcvDataSizeMsb =
 111                                         hsp->cls2.rcvDataSizeMsb;
 112                         }
 113                 }
 114         } else if (class == CLASS2)
 115                 goto bad_service_param;
 116         if (sp->cls3.classValid) {
 117                 if (!flogi) {
 118                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 119                                      hsp->cls3.rcvDataSizeLsb);
 120                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 121                                      sp->cls3.rcvDataSizeLsb);
 122                         if (!ssp_value)
 123                                 goto bad_service_param;
 124                         if (ssp_value > hsp_value) {
 125                                 sp->cls3.rcvDataSizeLsb =
 126                                         hsp->cls3.rcvDataSizeLsb;
 127                                 sp->cls3.rcvDataSizeMsb =
 128                                         hsp->cls3.rcvDataSizeMsb;
 129                         }
 130                 }
 131         } else if (class == CLASS3)
 132                 goto bad_service_param;
 133
 134         /*
 135          * Preserve the upper four bits of the MSB from the PLOGI response.
 136          * These bits contain the Buffer-to-Buffer State Change Number
 137          * from the target and need to be passed to the FW.
 138          */
 139         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 140         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 141         if (ssp_value > hsp_value) {
 142                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 143                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 144                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 145         }
 146
 147         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 148         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 149         return 1;
 150 bad_service_param:
 151         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 152                          "0207 Device %x "
 153                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 154                          "invalid service parameters.  Ignoring device.\n",
 155                          ndlp->nlp_DID,
 156                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 157                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 158                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 159                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 160         return 0;
 161 }
 162
 163 static void *
 164 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 165                         struct lpfc_iocbq *rspiocb)
 166 {
 167         struct lpfc_dmabuf *pcmd, *prsp;
 168         uint32_t *lp;
 169         void     *ptr = NULL;
 170         IOCB_t   *irsp;
 171
 172         irsp = &rspiocb->iocb;
 173         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 174
 175         /* For lpfc_els_abort, context2 could be zero'ed to delay
 176          * freeing associated memory till after ABTS completes.
 177          */
 178         if (pcmd) {
 179                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 180                                        list);
 181                 if (prsp) {
 182                         lp = (uint32_t *) prsp->virt;
 183                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 184                 }
 185         } else {
 186                 /* Force ulpStatus error since we are returning NULL ptr */
 187                 if (!(irsp->ulpStatus)) {
 188                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 189                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 190                 }
 191                 ptr = NULL;
 192         }
 193         return ptr;
 194 }
 195
 196
 197
 198 /*
 199  * Free resources / clean up outstanding I/Os
 200  * associated with a LPFC_NODELIST entry. This
 201  * routine effectively results in a "software abort".
 202  */
 203 int
 204 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 205 {
 206         LIST_HEAD(completions);
 207         LIST_HEAD(txcmplq_completions);
 208         LIST_HEAD(abort_list);
 209         struct lpfc_sli  *psli = &phba->sli;
 210         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 211         struct lpfc_iocbq *iocb, *next_iocb;
 212
 213         /* Abort outstanding I/O on NPort <nlp_DID> */
 214         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 215                          "2819 Abort outstanding I/O on NPort x%x "
 216                          "Data: x%x x%x x%x\n",
 217                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 218                          ndlp->nlp_rpi);
 219
 220         lpfc_fabric_abort_nport(ndlp);
 221
 222         /* First check the txq */
 223         spin_lock_irq(&phba->hbalock);
 224         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 225                 /* Check to see if iocb matches the nport we are looking for */
 226                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 227                         /* It matches, so deque and call compl with anp error */
 228                         list_move_tail(&iocb->list, &completions);
 229                         pring->txq_cnt--;
 230                 }
 231         }
 232
 233         /* Next check the txcmplq */
 234         list_splice_init(&pring->txcmplq, &txcmplq_completions);
 235         spin_unlock_irq(&phba->hbalock);
 236
 237         list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
 238                 /* Check to see if iocb matches the nport we are looking for */
 239                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 240                         list_add_tail(&iocb->dlist, &abort_list);
 241         }
 242         spin_lock_irq(&phba->hbalock);
 243         list_splice(&txcmplq_completions, &pring->txcmplq);
 244         spin_unlock_irq(&phba->hbalock);
 245
 246         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 247                         spin_lock_irq(&phba->hbalock);
 248                         list_del_init(&iocb->dlist);
 249                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 250                         spin_unlock_irq(&phba->hbalock);
 251         }
 252
 253         /* Cancel all the IOCBs from the completions list */
 254         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 255                               IOERR_SLI_ABORTED);
 256
 257         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 258         return 0;
 259 }
 260
 261 static int
 262 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 263                struct lpfc_iocbq *cmdiocb)
 264 {
 265         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 266         struct lpfc_hba    *phba = vport->phba;
 267         struct lpfc_dmabuf *pcmd;
 268         uint32_t *lp;
 269         IOCB_t *icmd;
 270         struct serv_parm *sp;
 271         LPFC_MBOXQ_t *mbox;
 272         struct ls_rjt stat;
 273         int rc;
 274
 275         memset(&stat, 0, sizeof (struct ls_rjt));
 276         if (vport->port_state <= LPFC_FDISC) {
 277                 /* Before responding to PLOGI, check for pt2pt mode.
 278                  * If we are pt2pt, with an outstanding FLOGI, abort
 279                  * the FLOGI and resend it first.
 280                  */
 281                 if (vport->fc_flag & FC_PT2PT) {
 282                          lpfc_els_abort_flogi(phba);
 283                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 284                                 /* If the other side is supposed to initiate
 285                                  * the PLOGI anyway, just ACC it now and
 286                                  * move on with discovery.
 287                                  */
 288                                 phba->fc_edtov = FF_DEF_EDTOV;
 289                                 phba->fc_ratov = FF_DEF_RATOV;
 290                                 /* Start discovery - this should just do
 291                                    CLEAR_LA */
 292                                 lpfc_disc_start(vport);
 293                         } else
 294                                 lpfc_initial_flogi(vport);
 295                 } else {
 296                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 297                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 298                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 299                                             ndlp, NULL);
 300                         return 0;
 301                 }
 302         }
 303         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 304         lp = (uint32_t *) pcmd->virt;
 305         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 306         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 307                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 308                                  "0140 PLOGI Reject: invalid nname\n");
 309                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 310                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 311                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 312                         NULL);
 313                 return 0;
 314         }
 315         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 316                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 317                                  "0141 PLOGI Reject: invalid pname\n");
 318                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 319                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 320                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 321                         NULL);
 322                 return 0;
 323         }
 324         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 325                 /* Reject this request because invalid parameters */
 326                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 327                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 328                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 329                         NULL);
 330                 return 0;
 331         }
 332         icmd = &cmdiocb->iocb;
 333
 334         /* PLOGI chkparm OK */
 335         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 336                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 337                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 338                          ndlp->nlp_rpi);
 339
 340         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 341                 ndlp->nlp_fcp_info |= CLASS2;
 342         else
 343                 ndlp->nlp_fcp_info |= CLASS3;
 344
 345         ndlp->nlp_class_sup = 0;
 346         if (sp->cls1.classValid)
 347                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 348         if (sp->cls2.classValid)
 349                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 350         if (sp->cls3.classValid)
 351                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 352         if (sp->cls4.classValid)
 353                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 354         ndlp->nlp_maxframe =
 355                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 356
 357         /* no need to reg_login if we are already in one of these states */
 358         switch (ndlp->nlp_state) {
 359         case  NLP_STE_NPR_NODE:
 360                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 361                         break;
 362         case  NLP_STE_REG_LOGIN_ISSUE:
 363         case  NLP_STE_PRLI_ISSUE:
 364         case  NLP_STE_UNMAPPED_NODE:
 365         case  NLP_STE_MAPPED_NODE:
 366                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 367                 return 1;
 368         }
 369
 370         /* Check for Nport to NPort pt2pt protocol */
 371         if ((vport->fc_flag & FC_PT2PT) &&
 372             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 373
 374                 /* rcv'ed PLOGI decides what our NPortId will be */
 375                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 376                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 377                 if (mbox == NULL)
 378                         goto out;
 379                 lpfc_config_link(phba, mbox);
 380                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 381                 mbox->vport = vport;
 382                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 383                 if (rc == MBX_NOT_FINISHED) {
 384                         mempool_free(mbox, phba->mbox_mem_pool);
 385                         goto out;
 386                 }
 387                 /*
 388                  * For SLI4, the VFI/VPI are registered AFTER the
 389                  * Nport with the higher WWPN sends us a PLOGI with
 390                  * our assigned NPortId.
 391                  */
 392                 if (phba->sli_rev == LPFC_SLI_REV4)
 393                         lpfc_issue_reg_vfi(vport);
 394
 395                 lpfc_can_disctmo(vport);
 396         }
 397         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 398         if (!mbox)
 399                 goto out;
 400
 401         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 402         if (phba->sli_rev == LPFC_SLI_REV4)
 403                 lpfc_unreg_rpi(vport, ndlp);
 404
 405         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 406                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 407         if (rc) {
 408                 mempool_free(mbox, phba->mbox_mem_pool);
 409                 goto out;
 410         }
 411
 412         /* ACC PLOGI rsp command needs to execute first,
 413          * queue this mbox command to be processed later.
 414          */
 415         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 416         /*
 417          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 418          * command issued in lpfc_cmpl_els_acc().
 419          */
 420         mbox->vport = vport;
 421         spin_lock_irq(shost->host_lock);
 422         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 423         spin_unlock_irq(shost->host_lock);
 424
 425         /*
 426          * If there is an outstanding PLOGI issued, abort it before
 427          * sending ACC rsp for received PLOGI. If pending plogi
 428          * is not canceled here, the plogi will be rejected by
 429          * remote port and will be retried. On a configuration with
 430          * single discovery thread, this will cause a huge delay in
 431          * discovery. Also this will cause multiple state machines
 432          * running in parallel for this node.
 433          */
 434         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 435                 /* software abort outstanding PLOGI */
 436                 lpfc_els_abort(phba, ndlp);
 437         }
 438
 439         if ((vport->port_type == LPFC_NPIV_PORT &&
 440              vport->cfg_restrict_login)) {
 441
 442                 /* In order to preserve RPIs, we want to cleanup
 443                  * the default RPI the firmware created to rcv
 444                  * this ELS request. The only way to do this is
 445                  * to register, then unregister the RPI.
 446                  */
 447                 spin_lock_irq(shost->host_lock);
 448                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 449                 spin_unlock_irq(shost->host_lock);
 450                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 451                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 452                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 453                         ndlp, mbox);
 454                 if (rc)
 455                         mempool_free(mbox, phba->mbox_mem_pool);
 456                 return 1;
 457         }
 458         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 459         if (rc)
 460                 mempool_free(mbox, phba->mbox_mem_pool);
 461         return 1;
 462 out:
 463         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 464         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 465         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 466         return 0;
 467 }
 468
 469 /**
 470  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 471  * @phba: pointer to lpfc hba data structure.
 472  * @mboxq: pointer to mailbox object
 473  *
 474  * This routine is invoked to issue a completion to a rcv'ed
 475  * ADISC or PDISC after the paused RPI has been resumed.
 476  **/
 477 static void
 478 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 479 {
 480         struct lpfc_vport *vport;
 481         struct lpfc_iocbq *elsiocb;
 482         struct lpfc_nodelist *ndlp;
 483         uint32_t cmd;
 484
 485         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 486         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 487         vport = mboxq->vport;
 488         cmd = elsiocb->drvrTimeout;
 489
 490         if (cmd == ELS_CMD_ADISC) {
 491                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 492         } else {
 493                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 494                         ndlp, NULL);
 495         }
 496         kfree(elsiocb);
 497         mempool_free(mboxq, phba->mbox_mem_pool);
 498 }
 499
 500 static int
 501 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 502                 struct lpfc_iocbq *cmdiocb)
 503 {
 504         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 505         struct lpfc_iocbq  *elsiocb;
 506         struct lpfc_dmabuf *pcmd;
 507         struct serv_parm   *sp;
 508         struct lpfc_name   *pnn, *ppn;
 509         struct ls_rjt stat;
 510         ADISC *ap;
 511         IOCB_t *icmd;
 512         uint32_t *lp;
 513         uint32_t cmd;
 514
 515         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 516         lp = (uint32_t *) pcmd->virt;
 517
 518         cmd = *lp++;
 519         if (cmd == ELS_CMD_ADISC) {
 520                 ap = (ADISC *) lp;
 521                 pnn = (struct lpfc_name *) & ap->nodeName;
 522                 ppn = (struct lpfc_name *) & ap->portName;
 523         } else {
 524                 sp = (struct serv_parm *) lp;
 525                 pnn = (struct lpfc_name *) & sp->nodeName;
 526                 ppn = (struct lpfc_name *) & sp->portName;
 527         }
 528
 529         icmd = &cmdiocb->iocb;
 530         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 531
 532                 /*
 533                  * As soon as  we send ACC, the remote NPort can
 534                  * start sending us data. Thus, for SLI4 we must
 535                  * resume the RPI before the ACC goes out.
 536                  */
 537                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 538                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 539                                 GFP_KERNEL);
 540                         if (elsiocb) {
 541
 542                                 /* Save info from cmd IOCB used in rsp */
 543                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 544                                         sizeof(struct lpfc_iocbq));
 545
 546                                 /* Save the ELS cmd */
 547                                 elsiocb->drvrTimeout = cmd;
 548
 549                                 lpfc_sli4_resume_rpi(ndlp,
 550                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 551                                 goto out;
 552                         }
 553                 }
 554
 555                 if (cmd == ELS_CMD_ADISC) {
 556                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 557                 } else {
 558                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 559                                 ndlp, NULL);
 560                 }
 561 out:
 562                 /* If we are authenticated, move to the proper state */
 563                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 564                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 565                 else
 566                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 567
 568                 return 1;
 569         }
 570         /* Reject this request because invalid parameters */
 571         stat.un.b.lsRjtRsvd0 = 0;
 572         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 573         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 574         stat.un.b.vendorUnique = 0;
 575         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 576
 577         /* 1 sec timeout */
 578         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 579
 580         spin_lock_irq(shost->host_lock);
 581         ndlp->nlp_flag |= NLP_DELAY_TMO;
 582         spin_unlock_irq(shost->host_lock);
 583         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 584         ndlp->nlp_prev_state = ndlp->nlp_state;
 585         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 586         return 0;
 587 }
 588
 589 static int
 590 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 591               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 592 {
 593         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 594         struct lpfc_hba    *phba = vport->phba;
 595         struct lpfc_vport **vports;
 596         int i, active_vlink_present = 0 ;
 597
 598         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 599         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 600          * PLOGIs during LOGO storms from a device.
 601          */
 602         spin_lock_irq(shost->host_lock);
 603         ndlp->nlp_flag |= NLP_LOGO_ACC;
 604         spin_unlock_irq(shost->host_lock);
 605         if (els_cmd == ELS_CMD_PRLO)
 606                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 607         else
 608                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 609         if (ndlp->nlp_DID == Fabric_DID) {
 610                 if (vport->port_state <= LPFC_FDISC)
 611                         goto out;
 612                 lpfc_linkdown_port(vport);
 613                 spin_lock_irq(shost->host_lock);
 614                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 615                 spin_unlock_irq(shost->host_lock);
 616                 vports = lpfc_create_vport_work_array(phba);
 617                 if (vports) {
 618                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 619                                         i++) {
 620                                 if ((!(vports[i]->fc_flag &
 621                                         FC_VPORT_LOGO_RCVD)) &&
 622                                         (vports[i]->port_state > LPFC_FDISC)) {
 623                                         active_vlink_present = 1;
 624                                         break;
 625                                 }
 626                         }
 627                         lpfc_destroy_vport_work_array(phba, vports);
 628                 }
 629
 630                 if (active_vlink_present) {
 631                         /*
 632                          * If there are other active VLinks present,
 633                          * re-instantiate the Vlink using FDISC.
 634                          */
 635                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 636                         spin_lock_irq(shost->host_lock);
 637                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 638                         spin_unlock_irq(shost->host_lock);
 639                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 640                         vport->port_state = LPFC_FDISC;
 641                 } else {
 642                         spin_lock_irq(shost->host_lock);
 643                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 644                         spin_unlock_irq(shost->host_lock);
 645                         lpfc_retry_pport_discovery(phba);
 646                 }
 647         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 648                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 649                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 650                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 651                 /* Only try to re-login if this is NOT a Fabric Node */
 652                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 653                 spin_lock_irq(shost->host_lock);
 654                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 655                 spin_unlock_irq(shost->host_lock);
 656
 657                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 658         }
 659 out:
 660         ndlp->nlp_prev_state = ndlp->nlp_state;
 661         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 662
 663         spin_lock_irq(shost->host_lock);
 664         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 665         spin_unlock_irq(shost->host_lock);
 666         /* The driver has to wait until the ACC completes before it continues
 667          * processing the LOGO.  The action will resume in
 668          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 669          * unreg_login, the driver waits so the ACC does not get aborted.
 670          */
 671         return 0;
 672 }
 673
 674 static void
 675 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 676               struct lpfc_iocbq *cmdiocb)
 677 {
 678         struct lpfc_dmabuf *pcmd;
 679         uint32_t *lp;
 680         PRLI *npr;
 681         struct fc_rport *rport = ndlp->rport;
 682         u32 roles;
 683
 684         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 685         lp = (uint32_t *) pcmd->virt;
 686         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 687
 688         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 689         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 690         if (npr->prliType == PRLI_FCP_TYPE) {
 691                 if (npr->initiatorFunc)
 692                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 693                 if (npr->targetFunc)
 694                         ndlp->nlp_type |= NLP_FCP_TARGET;
 695                 if (npr->Retry)
 696                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 697         }
 698         if (rport) {
 699                 /* We need to update the rport role values */
 700                 roles = FC_RPORT_ROLE_UNKNOWN;
 701                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 702                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 703                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 704                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 705
 706                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 707                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 708                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 709
 710                 fc_remote_port_rolechg(rport, roles);
 711         }
 712 }
 713
 714 static uint32_t
 715 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 716 {
 717         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 718
 719         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 720                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 721                 return 0;
 722         }
 723
 724         if (!(vport->fc_flag & FC_PT2PT)) {
 725                 /* Check config parameter use-adisc or FCP-2 */
 726                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 727                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 728                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 729                         spin_lock_irq(shost->host_lock);
 730                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 731                         spin_unlock_irq(shost->host_lock);
 732                         return 1;
 733                 }
 734         }
 735         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 736         lpfc_unreg_rpi(vport, ndlp);
 737         return 0;
 738 }
 739
 740 /**
 741  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 742  * @phba : Pointer to lpfc_hba structure.
 743  * @vport: Pointer to lpfc_vport structure.
 744  * @rpi  : rpi to be release.
 745  *
 746  * This function will send a unreg_login mailbox command to the firmware
 747  * to release a rpi.
 748  **/
 749 void
 750 lpfc_release_rpi(struct lpfc_hba *phba,
 751                 struct lpfc_vport *vport,
 752                 uint16_t rpi)
 753 {
 754         LPFC_MBOXQ_t *pmb;
 755         int rc;
 756
 757         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 758                         GFP_KERNEL);
 759         if (!pmb)
 760                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 761                         "2796 mailbox memory allocation failed \n");
 762         else {
 763                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 764                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 765                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 766                 if (rc == MBX_NOT_FINISHED)
 767                         mempool_free(pmb, phba->mbox_mem_pool);
 768         }
 769 }
 770
 771 static uint32_t
 772 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 773                   void *arg, uint32_t evt)
 774 {
 775         struct lpfc_hba *phba;
 776         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 777         MAILBOX_t *mb;
 778         uint16_t rpi;
 779
 780         phba = vport->phba;
 781         /* Release the RPI if reglogin completing */
 782         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 783                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 784                 (!pmb->u.mb.mbxStatus)) {
 785                 mb = &pmb->u.mb;
 786                 rpi = pmb->u.mb.un.varWords[0];
 787                 lpfc_release_rpi(phba, vport, rpi);
 788         }
 789         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 790                          "0271 Illegal State Transition: node x%x "
 791                          "event x%x, state x%x Data: x%x x%x\n",
 792                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 793                          ndlp->nlp_flag);
 794         return ndlp->nlp_state;
 795 }
 796
 797 static uint32_t
 798 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 799                   void *arg, uint32_t evt)
 800 {
 801         /* This transition is only legal if we previously
 802          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 803          * working on the same NPortID, do nothing for this thread
 804          * to stop it.
 805          */
 806         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 807                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 808                          "0272 Illegal State Transition: node x%x "
 809                          "event x%x, state x%x Data: x%x x%x\n",
 810                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 811                          ndlp->nlp_flag);
 812         }
 813         return ndlp->nlp_state;
 814 }
 815
 816 /* Start of Discovery State Machine routines */
 817
 818 static uint32_t
 819 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 820                            void *arg, uint32_t evt)
 821 {
 822         struct lpfc_iocbq *cmdiocb;
 823
 824         cmdiocb = (struct lpfc_iocbq *) arg;
 825
 826         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 827                 return ndlp->nlp_state;
 828         }
 829         return NLP_STE_FREED_NODE;
 830 }
 831
 832 static uint32_t
 833 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 834                          void *arg, uint32_t evt)
 835 {
 836         lpfc_issue_els_logo(vport, ndlp, 0);
 837         return ndlp->nlp_state;
 838 }
 839
 840 static uint32_t
 841 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 842                           void *arg, uint32_t evt)
 843 {
 844         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 845         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 846
 847         spin_lock_irq(shost->host_lock);
 848         ndlp->nlp_flag |= NLP_LOGO_ACC;
 849         spin_unlock_irq(shost->host_lock);
 850         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 851
 852         return ndlp->nlp_state;
 853 }
 854
 855 static uint32_t
 856 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 857                            void *arg, uint32_t evt)
 858 {
 859         return NLP_STE_FREED_NODE;
 860 }
 861
 862 static uint32_t
 863 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 864                            void *arg, uint32_t evt)
 865 {
 866         return NLP_STE_FREED_NODE;
 867 }
 868
 869 static uint32_t
 870 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 871                         struct lpfc_nodelist *ndlp,
 872                            void *arg, uint32_t evt)
 873 {
 874         return ndlp->nlp_state;
 875 }
 876
 877 static uint32_t
 878 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 879                            void *arg, uint32_t evt)
 880 {
 881         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 882         struct lpfc_hba   *phba = vport->phba;
 883         struct lpfc_iocbq *cmdiocb = arg;
 884         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 885         uint32_t *lp = (uint32_t *) pcmd->virt;
 886         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 887         struct ls_rjt stat;
 888         int port_cmp;
 889
 890         memset(&stat, 0, sizeof (struct ls_rjt));
 891
 892         /* For a PLOGI, we only accept if our portname is less
 893          * than the remote portname.
 894          */
 895         phba->fc_stat.elsLogiCol++;
 896         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 897                           sizeof(struct lpfc_name));
 898
 899         if (port_cmp >= 0) {
 900                 /* Reject this request because the remote node will accept
 901                    ours */
 902                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 903                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 904                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 905                         NULL);
 906         } else {
 907                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 908                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 909                     (vport->num_disc_nodes)) {
 910                         spin_lock_irq(shost->host_lock);
 911                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 912                         spin_unlock_irq(shost->host_lock);
 913                         /* Check if there are more PLOGIs to be sent */
 914                         lpfc_more_plogi(vport);
 915                         if (vport->num_disc_nodes == 0) {
 916                                 spin_lock_irq(shost->host_lock);
 917                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 918                                 spin_unlock_irq(shost->host_lock);
 919                                 lpfc_can_disctmo(vport);
 920                                 lpfc_end_rscn(vport);
 921                         }
 922                 }
 923         } /* If our portname was less */
 924
 925         return ndlp->nlp_state;
 926 }
 927
 928 static uint32_t
 929 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 930                           void *arg, uint32_t evt)
 931 {
 932         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 933         struct ls_rjt     stat;
 934
 935         memset(&stat, 0, sizeof (struct ls_rjt));
 936         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 937         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 938         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 939         return ndlp->nlp_state;
 940 }
 941
 942 static uint32_t
 943 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 944                           void *arg, uint32_t evt)
 945 {
 946         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 947
 948                                 /* software abort outstanding PLOGI */
 949         lpfc_els_abort(vport->phba, ndlp);
 950
 951         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 952         return ndlp->nlp_state;
 953 }
 954
 955 static uint32_t
 956 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 957                          void *arg, uint32_t evt)
 958 {
 959         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 960         struct lpfc_hba   *phba = vport->phba;
 961         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 962
 963         /* software abort outstanding PLOGI */
 964         lpfc_els_abort(phba, ndlp);
 965
 966         if (evt == NLP_EVT_RCV_LOGO) {
 967                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 968         } else {
 969                 lpfc_issue_els_logo(vport, ndlp, 0);
 970         }
 971
 972         /* Put ndlp in npr state set plogi timer for 1 sec */
 973         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 974         spin_lock_irq(shost->host_lock);
 975         ndlp->nlp_flag |= NLP_DELAY_TMO;
 976         spin_unlock_irq(shost->host_lock);
 977         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 978         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 979         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 980
 981         return ndlp->nlp_state;
 982 }
 983
 984 static uint32_t
 985 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 986                             struct lpfc_nodelist *ndlp,
 987                             void *arg,
 988                             uint32_t evt)
 989 {
 990         struct lpfc_hba    *phba = vport->phba;
 991         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 992         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 993         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 994         uint32_t *lp;
 995         IOCB_t *irsp;
 996         struct serv_parm *sp;
 997         LPFC_MBOXQ_t *mbox;
 998
 999         cmdiocb = (struct lpfc_iocbq *) arg;
1000         rspiocb = cmdiocb->context_un.rsp_iocb;
1001
1002         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1003                 /* Recovery from PLOGI collision logic */
1004                 return ndlp->nlp_state;
1005         }
1006
1007         irsp = &rspiocb->iocb;
1008
1009         if (irsp->ulpStatus)
1010                 goto out;
1011
1012         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1013
1014         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1015
1016         lp = (uint32_t *) prsp->virt;
1017         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1018
1019         /* Some switches have FDMI servers returning 0 for WWN */
1020         if ((ndlp->nlp_DID != FDMI_DID) &&
1021                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1022                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1023                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1024                                  "0142 PLOGI RSP: Invalid WWN.\n");
1025                 goto out;
1026         }
1027         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1028                 goto out;
1029         /* PLOGI chkparm OK */
1030         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1031                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1032                          ndlp->nlp_DID, ndlp->nlp_state,
1033                          ndlp->nlp_flag, ndlp->nlp_rpi);
1034         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1035                 ndlp->nlp_fcp_info |= CLASS2;
1036         else
1037                 ndlp->nlp_fcp_info |= CLASS3;
1038
1039         ndlp->nlp_class_sup = 0;
1040         if (sp->cls1.classValid)
1041                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1042         if (sp->cls2.classValid)
1043                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1044         if (sp->cls3.classValid)
1045                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1046         if (sp->cls4.classValid)
1047                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1048         ndlp->nlp_maxframe =
1049                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1050
1051         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1052         if (!mbox) {
1053                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1054                         "0133 PLOGI: no memory for reg_login "
1055                         "Data: x%x x%x x%x x%x\n",
1056                         ndlp->nlp_DID, ndlp->nlp_state,
1057                         ndlp->nlp_flag, ndlp->nlp_rpi);
1058                 goto out;
1059         }
1060
1061         lpfc_unreg_rpi(vport, ndlp);
1062
1063         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1064                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1065                 switch (ndlp->nlp_DID) {
1066                 case NameServer_DID:
1067                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1068                         break;
1069                 case FDMI_DID:
1070                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1071                         break;
1072                 default:
1073                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1074                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1075                 }
1076                 mbox->context2 = lpfc_nlp_get(ndlp);
1077                 mbox->vport = vport;
1078                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1079                     != MBX_NOT_FINISHED) {
1080                         lpfc_nlp_set_state(vport, ndlp,
1081                                            NLP_STE_REG_LOGIN_ISSUE);
1082                         return ndlp->nlp_state;
1083                 }
1084                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1085                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1086                 /* decrement node reference count to the failed mbox
1087                  * command
1088                  */
1089                 lpfc_nlp_put(ndlp);
1090                 mp = (struct lpfc_dmabuf *) mbox->context1;
1091                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1092                 kfree(mp);
1093                 mempool_free(mbox, phba->mbox_mem_pool);
1094
1095                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1096                                  "0134 PLOGI: cannot issue reg_login "
1097                                  "Data: x%x x%x x%x x%x\n",
1098                                  ndlp->nlp_DID, ndlp->nlp_state,
1099                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1100         } else {
1101                 mempool_free(mbox, phba->mbox_mem_pool);
1102
1103                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1104                                  "0135 PLOGI: cannot format reg_login "
1105                                  "Data: x%x x%x x%x x%x\n",
1106                                  ndlp->nlp_DID, ndlp->nlp_state,
1107                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1108         }
1109
1110
1111 out:
1112         if (ndlp->nlp_DID == NameServer_DID) {
1113                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1114                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1115                                  "0261 Cannot Register NameServer login\n");
1116         }
1117
1118         /*
1119         ** In case the node reference counter does not go to zero, ensure that
1120         ** the stale state for the node is not processed.
1121         */
1122
1123         ndlp->nlp_prev_state = ndlp->nlp_state;
1124         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1125         spin_lock_irq(shost->host_lock);
1126         ndlp->nlp_flag |= NLP_DEFER_RM;
1127         spin_unlock_irq(shost->host_lock);
1128         return NLP_STE_FREED_NODE;
1129 }
1130
1131 static uint32_t
1132 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1133                            void *arg, uint32_t evt)
1134 {
1135         return ndlp->nlp_state;
1136 }
1137
1138 static uint32_t
1139 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1140         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1141 {
1142         struct lpfc_hba *phba;
1143         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1144         MAILBOX_t *mb = &pmb->u.mb;
1145         uint16_t rpi;
1146
1147         phba = vport->phba;
1148         /* Release the RPI */
1149         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1150                 !mb->mbxStatus) {
1151                 rpi = pmb->u.mb.un.varWords[0];
1152                 lpfc_release_rpi(phba, vport, rpi);
1153         }
1154         return ndlp->nlp_state;
1155 }
1156
1157 static uint32_t
1158 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1159                            void *arg, uint32_t evt)
1160 {
1161         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1162
1163         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1164                 spin_lock_irq(shost->host_lock);
1165                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1166                 spin_unlock_irq(shost->host_lock);
1167                 return ndlp->nlp_state;
1168         } else {
1169                 /* software abort outstanding PLOGI */
1170                 lpfc_els_abort(vport->phba, ndlp);
1171
1172                 lpfc_drop_node(vport, ndlp);
1173                 return NLP_STE_FREED_NODE;
1174         }
1175 }
1176
1177 static uint32_t
1178 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1179                               struct lpfc_nodelist *ndlp,
1180                               void *arg,
1181                               uint32_t evt)
1182 {
1183         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1184         struct lpfc_hba  *phba = vport->phba;
1185
1186         /* Don't do anything that will mess up processing of the
1187          * previous RSCN.
1188          */
1189         if (vport->fc_flag & FC_RSCN_DEFERRED)
1190                 return ndlp->nlp_state;
1191
1192         /* software abort outstanding PLOGI */
1193         lpfc_els_abort(phba, ndlp);
1194
1195         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1196         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1197         spin_lock_irq(shost->host_lock);
1198         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1199         spin_unlock_irq(shost->host_lock);
1200
1201         return ndlp->nlp_state;
1202 }
1203
1204 static uint32_t
1205 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1206                            void *arg, uint32_t evt)
1207 {
1208         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1209         struct lpfc_hba   *phba = vport->phba;
1210         struct lpfc_iocbq *cmdiocb;
1211
1212         /* software abort outstanding ADISC */
1213         lpfc_els_abort(phba, ndlp);
1214
1215         cmdiocb = (struct lpfc_iocbq *) arg;
1216
1217         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1218                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1219                         spin_lock_irq(shost->host_lock);
1220                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1221                         spin_unlock_irq(shost->host_lock);
1222                         if (vport->num_disc_nodes)
1223                                 lpfc_more_adisc(vport);
1224                 }
1225                 return ndlp->nlp_state;
1226         }
1227         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1228         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1229         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1230
1231         return ndlp->nlp_state;
1232 }
1233
1234 static uint32_t
1235 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1236                           void *arg, uint32_t evt)
1237 {
1238         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1239
1240         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1241         return ndlp->nlp_state;
1242 }
1243
1244 static uint32_t
1245 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1246                           void *arg, uint32_t evt)
1247 {
1248         struct lpfc_hba *phba = vport->phba;
1249         struct lpfc_iocbq *cmdiocb;
1250
1251         cmdiocb = (struct lpfc_iocbq *) arg;
1252
1253         /* software abort outstanding ADISC */
1254         lpfc_els_abort(phba, ndlp);
1255
1256         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1257         return ndlp->nlp_state;
1258 }
1259
1260 static uint32_t
1261 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1262                             struct lpfc_nodelist *ndlp,
1263                             void *arg, uint32_t evt)
1264 {
1265         struct lpfc_iocbq *cmdiocb;
1266
1267         cmdiocb = (struct lpfc_iocbq *) arg;
1268
1269         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1270         return ndlp->nlp_state;
1271 }
1272
1273 static uint32_t
1274 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1275                           void *arg, uint32_t evt)
1276 {
1277         struct lpfc_iocbq *cmdiocb;
1278
1279         cmdiocb = (struct lpfc_iocbq *) arg;
1280
1281         /* Treat like rcv logo */
1282         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1283         return ndlp->nlp_state;
1284 }
1285
1286 static uint32_t
1287 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1288                             struct lpfc_nodelist *ndlp,
1289                             void *arg, uint32_t evt)
1290 {
1291         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1292         struct lpfc_hba   *phba = vport->phba;
1293         struct lpfc_iocbq *cmdiocb, *rspiocb;
1294         IOCB_t *irsp;
1295         ADISC *ap;
1296         int rc;
1297
1298         cmdiocb = (struct lpfc_iocbq *) arg;
1299         rspiocb = cmdiocb->context_un.rsp_iocb;
1300
1301         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1302         irsp = &rspiocb->iocb;
1303
1304         if ((irsp->ulpStatus) ||
1305             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1306                 /* 1 sec timeout */
1307                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1308                 spin_lock_irq(shost->host_lock);
1309                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1310                 spin_unlock_irq(shost->host_lock);
1311                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1312
1313                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1314                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1315
1316                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1317                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1318                 lpfc_unreg_rpi(vport, ndlp);
1319                 return ndlp->nlp_state;
1320         }
1321
1322         if (phba->sli_rev == LPFC_SLI_REV4) {
1323                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1324                 if (rc) {
1325                         /* Stay in state and retry. */
1326                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1327                         return ndlp->nlp_state;
1328                 }
1329         }
1330
1331         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1332                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1333                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1334         } else {
1335                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1336                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1337         }
1338
1339         return ndlp->nlp_state;
1340 }
1341
1342 static uint32_t
1343 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1344                            void *arg, uint32_t evt)
1345 {
1346         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1347
1348         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1349                 spin_lock_irq(shost->host_lock);
1350                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1351                 spin_unlock_irq(shost->host_lock);
1352                 return ndlp->nlp_state;
1353         } else {
1354                 /* software abort outstanding ADISC */
1355                 lpfc_els_abort(vport->phba, ndlp);
1356
1357                 lpfc_drop_node(vport, ndlp);
1358                 return NLP_STE_FREED_NODE;
1359         }
1360 }
1361
1362 static uint32_t
1363 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1364                               struct lpfc_nodelist *ndlp,
1365                               void *arg,
1366                               uint32_t evt)
1367 {
1368         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1369         struct lpfc_hba  *phba = vport->phba;
1370
1371         /* Don't do anything that will mess up processing of the
1372          * previous RSCN.
1373          */
1374         if (vport->fc_flag & FC_RSCN_DEFERRED)
1375                 return ndlp->nlp_state;
1376
1377         /* software abort outstanding ADISC */
1378         lpfc_els_abort(phba, ndlp);
1379
1380         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1381         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1382         spin_lock_irq(shost->host_lock);
1383         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1384         spin_unlock_irq(shost->host_lock);
1385         lpfc_disc_set_adisc(vport, ndlp);
1386         return ndlp->nlp_state;
1387 }
1388
1389 static uint32_t
1390 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1391                               struct lpfc_nodelist *ndlp,
1392                               void *arg,
1393                               uint32_t evt)
1394 {
1395         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1396
1397         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1398         return ndlp->nlp_state;
1399 }
1400
1401 static uint32_t
1402 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1403                              struct lpfc_nodelist *ndlp,
1404                              void *arg,
1405                              uint32_t evt)
1406 {
1407         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1408
1409         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1410         return ndlp->nlp_state;
1411 }
1412
1413 static uint32_t
1414 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1415                              struct lpfc_nodelist *ndlp,
1416                              void *arg,
1417                              uint32_t evt)
1418 {
1419         struct lpfc_hba   *phba = vport->phba;
1420         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1421         LPFC_MBOXQ_t      *mb;
1422         LPFC_MBOXQ_t      *nextmb;
1423         struct lpfc_dmabuf *mp;
1424
1425         cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1428         if ((mb = phba->sli.mbox_active)) {
1429                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1430                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1431                         lpfc_nlp_put(ndlp);
1432                         mb->context2 = NULL;
1433                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1434                 }
1435         }
1436
1437         spin_lock_irq(&phba->hbalock);
1438         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1439                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1440                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1441                         mp = (struct lpfc_dmabuf *) (mb->context1);
1442                         if (mp) {
1443                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1444                                 kfree(mp);
1445                         }
1446                         lpfc_nlp_put(ndlp);
1447                         list_del(&mb->list);
1448                         phba->sli.mboxq_cnt--;
1449                         mempool_free(mb, phba->mbox_mem_pool);
1450                 }
1451         }
1452         spin_unlock_irq(&phba->hbalock);
1453
1454         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1455         return ndlp->nlp_state;
1456 }
1457
1458 static uint32_t
1459 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1460                                struct lpfc_nodelist *ndlp,
1461                                void *arg,
1462                                uint32_t evt)
1463 {
1464         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1465
1466         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1467         return ndlp->nlp_state;
1468 }
1469
1470 static uint32_t
1471 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1472                              struct lpfc_nodelist *ndlp,
1473                              void *arg,
1474                              uint32_t evt)
1475 {
1476         struct lpfc_iocbq *cmdiocb;
1477
1478         cmdiocb = (struct lpfc_iocbq *) arg;
1479         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1480         return ndlp->nlp_state;
1481 }
1482
1483 static uint32_t
1484 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1485                                   struct lpfc_nodelist *ndlp,
1486                                   void *arg,
1487                                   uint32_t evt)
1488 {
1489         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1490         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1491         MAILBOX_t *mb = &pmb->u.mb;
1492         uint32_t did  = mb->un.varWords[1];
1493
1494         if (mb->mbxStatus) {
1495                 /* RegLogin failed */
1496                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1497                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1498                                  "x%x\n",
1499                                  did, mb->mbxStatus, vport->port_state,
1500                                  mb->un.varRegLogin.vpi,
1501                                  mb->un.varRegLogin.rpi);
1502                 /*
1503                  * If RegLogin failed due to lack of HBA resources do not
1504                  * retry discovery.
1505                  */
1506                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1507                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1508                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1509                         return ndlp->nlp_state;
1510                 }
1511
1512                 /* Put ndlp in npr state set plogi timer for 1 sec */
1513                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1514                 spin_lock_irq(shost->host_lock);
1515                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1516                 spin_unlock_irq(shost->host_lock);
1517                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1518
1519                 lpfc_issue_els_logo(vport, ndlp, 0);
1520                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1521                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1522                 return ndlp->nlp_state;
1523         }
1524
1525         /* SLI4 ports have preallocated logical rpis. */
1526         if (vport->phba->sli_rev < LPFC_SLI_REV4)
1527                 ndlp->nlp_rpi = mb->un.varWords[0];
1528
1529         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1530
1531         /* Only if we are not a fabric nport do we issue PRLI */
1532         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1533                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1534                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1535                 lpfc_issue_els_prli(vport, ndlp, 0);
1536         } else {
1537                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1538                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1539         }
1540         return ndlp->nlp_state;
1541 }
1542
1543 static uint32_t
1544 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1545                               struct lpfc_nodelist *ndlp,
1546                               void *arg,
1547                               uint32_t evt)
1548 {
1549         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1550
1551         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1552                 spin_lock_irq(shost->host_lock);
1553                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1554                 spin_unlock_irq(shost->host_lock);
1555                 return ndlp->nlp_state;
1556         } else {
1557                 lpfc_drop_node(vport, ndlp);
1558                 return NLP_STE_FREED_NODE;
1559         }
1560 }
1561
1562 static uint32_t
1563 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1564                                  struct lpfc_nodelist *ndlp,
1565                                  void *arg,
1566                                  uint32_t evt)
1567 {
1568         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1569
1570         /* Don't do anything that will mess up processing of the
1571          * previous RSCN.
1572          */
1573         if (vport->fc_flag & FC_RSCN_DEFERRED)
1574                 return ndlp->nlp_state;
1575
1576         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1577         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1578         spin_lock_irq(shost->host_lock);
1579         ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1580         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1581         spin_unlock_irq(shost->host_lock);
1582         lpfc_disc_set_adisc(vport, ndlp);
1583         return ndlp->nlp_state;
1584 }
1585
1586 static uint32_t
1587 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1588                           void *arg, uint32_t evt)
1589 {
1590         struct lpfc_iocbq *cmdiocb;
1591
1592         cmdiocb = (struct lpfc_iocbq *) arg;
1593
1594         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1595         return ndlp->nlp_state;
1596 }
1597
1598 static uint32_t
1599 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1600                          void *arg, uint32_t evt)
1601 {
1602         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1603
1604         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1605         return ndlp->nlp_state;
1606 }
1607
1608 static uint32_t
1609 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1610                          void *arg, uint32_t evt)
1611 {
1612         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1613
1614         /* Software abort outstanding PRLI before sending acc */
1615         lpfc_els_abort(vport->phba, ndlp);
1616
1617         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1618         return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_padisc_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_rcv_padisc(vport, ndlp, cmdiocb);
1628         return ndlp->nlp_state;
1629 }
1630
1631 /* This routine is envoked when we rcv a PRLO request from a nport
1632  * we are logged into.  We should send back a PRLO rsp setting the
1633  * appropriate bits.
1634  * NEXT STATE = PRLI_ISSUE
1635  */
1636 static uint32_t
1637 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1638                          void *arg, uint32_t evt)
1639 {
1640         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1641
1642         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1643         return ndlp->nlp_state;
1644 }
1645
1646 static uint32_t
1647 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1648                           void *arg, uint32_t evt)
1649 {
1650         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1651         struct lpfc_iocbq *cmdiocb, *rspiocb;
1652         struct lpfc_hba   *phba = vport->phba;
1653         IOCB_t *irsp;
1654         PRLI *npr;
1655
1656         cmdiocb = (struct lpfc_iocbq *) arg;
1657         rspiocb = cmdiocb->context_un.rsp_iocb;
1658         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1659
1660         irsp = &rspiocb->iocb;
1661         if (irsp->ulpStatus) {
1662                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1663                     vport->cfg_restrict_login) {
1664                         goto out;
1665                 }
1666                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1667                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1668                 return ndlp->nlp_state;
1669         }
1670
1671         /* Check out PRLI rsp */
1672         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1673         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1674         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1675             (npr->prliType == PRLI_FCP_TYPE)) {
1676                 if (npr->initiatorFunc)
1677                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1678                 if (npr->targetFunc)
1679                         ndlp->nlp_type |= NLP_FCP_TARGET;
1680                 if (npr->Retry)
1681                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1682         }
1683         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1684             (vport->port_type == LPFC_NPIV_PORT) &&
1685              vport->cfg_restrict_login) {
1686 out:
1687                 spin_lock_irq(shost->host_lock);
1688                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1689                 spin_unlock_irq(shost->host_lock);
1690                 lpfc_issue_els_logo(vport, ndlp, 0);
1691
1692                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1693                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1694                 return ndlp->nlp_state;
1695         }
1696
1697         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1698         if (ndlp->nlp_type & NLP_FCP_TARGET)
1699                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1700         else
1701                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1702         return ndlp->nlp_state;
1703 }
1704
1705 /*! lpfc_device_rm_prli_issue
1706  *
1707  * \pre
1708  * \post
1709  * \param   phba
1710  * \param   ndlp
1711  * \param   arg
1712  * \param   evt
1713  * \return  uint32_t
1714  *
1715  * \b Description:
1716  *    This routine is envoked when we a request to remove a nport we are in the
1717  *    process of PRLIing. We should software abort outstanding prli, unreg
1718  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1719  *    on plogi list so it can be freed when LOGO completes.
1720  *
1721  */
1722
1723 static uint32_t
1724 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1725                           void *arg, uint32_t evt)
1726 {
1727         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1728
1729         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1730                 spin_lock_irq(shost->host_lock);
1731                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1732                 spin_unlock_irq(shost->host_lock);
1733                 return ndlp->nlp_state;
1734         } else {
1735                 /* software abort outstanding PLOGI */
1736                 lpfc_els_abort(vport->phba, ndlp);
1737
1738                 lpfc_drop_node(vport, ndlp);
1739                 return NLP_STE_FREED_NODE;
1740         }
1741 }
1742
1743
1744 /*! lpfc_device_recov_prli_issue
1745  *
1746  * \pre
1747  * \post
1748  * \param   phba
1749  * \param   ndlp
1750  * \param   arg
1751  * \param   evt
1752  * \return  uint32_t
1753  *
1754  * \b Description:
1755  *    The routine is envoked when the state of a device is unknown, like
1756  *    during a link down. We should remove the nodelist entry from the
1757  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1758  *    outstanding PRLI command, then free the node entry.
1759  */
1760 static uint32_t
1761 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1762                              struct lpfc_nodelist *ndlp,
1763                              void *arg,
1764                              uint32_t evt)
1765 {
1766         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1767         struct lpfc_hba  *phba = vport->phba;
1768
1769         /* Don't do anything that will mess up processing of the
1770          * previous RSCN.
1771          */
1772         if (vport->fc_flag & FC_RSCN_DEFERRED)
1773                 return ndlp->nlp_state;
1774
1775         /* software abort outstanding PRLI */
1776         lpfc_els_abort(phba, ndlp);
1777
1778         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1779         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1780         spin_lock_irq(shost->host_lock);
1781         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1782         spin_unlock_irq(shost->host_lock);
1783         lpfc_disc_set_adisc(vport, ndlp);
1784         return ndlp->nlp_state;
1785 }
1786
1787 static uint32_t
1788 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1789                           void *arg, uint32_t evt)
1790 {
1791         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1792         struct ls_rjt     stat;
1793
1794         memset(&stat, 0, sizeof(struct ls_rjt));
1795         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1796         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1797         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1798         return ndlp->nlp_state;
1799 }
1800
1801 static uint32_t
1802 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1803                          void *arg, uint32_t evt)
1804 {
1805         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1806         struct ls_rjt     stat;
1807
1808         memset(&stat, 0, sizeof(struct ls_rjt));
1809         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1810         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1811         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1812         return ndlp->nlp_state;
1813 }
1814
1815 static uint32_t
1816 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1817                          void *arg, uint32_t evt)
1818 {
1819         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1820         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1821
1822         spin_lock_irq(shost->host_lock);
1823         ndlp->nlp_flag &= NLP_LOGO_ACC;
1824         spin_unlock_irq(shost->host_lock);
1825         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1826         return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831                            void *arg, uint32_t evt)
1832 {
1833         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1834         struct ls_rjt     stat;
1835
1836         memset(&stat, 0, sizeof(struct ls_rjt));
1837         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1838         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1839         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1840         return ndlp->nlp_state;
1841 }
1842
1843 static uint32_t
1844 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1845                          void *arg, uint32_t evt)
1846 {
1847         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1848         struct ls_rjt     stat;
1849
1850         memset(&stat, 0, sizeof(struct ls_rjt));
1851         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1852         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1853         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1854         return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859                           void *arg, uint32_t evt)
1860 {
1861         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1862
1863         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1864         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1865         spin_lock_irq(shost->host_lock);
1866         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1867         spin_unlock_irq(shost->host_lock);
1868         lpfc_disc_set_adisc(vport, ndlp);
1869         return ndlp->nlp_state;
1870 }
1871
1872 static uint32_t
1873 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1874                           void *arg, uint32_t evt)
1875 {
1876         /*
1877          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
1878          * timed out and is calling for Device Remove.  In this case, the LOGO
1879          * must be allowed to complete in state LOGO_ISSUE so that the rpi
1880          * and other NLP flags are correctly cleaned up.
1881          */
1882         return ndlp->nlp_state;
1883 }
1884
1885 static uint32_t
1886 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1887                              struct lpfc_nodelist *ndlp,
1888                              void *arg, uint32_t evt)
1889 {
1890         /*
1891          * Device Recovery events have no meaning for a node with a LOGO
1892          * outstanding.  The LOGO has to complete first and handle the
1893          * node from that point.
1894          */
1895         return ndlp->nlp_state;
1896 }
1897
1898 static uint32_t
1899 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1900                           void *arg, uint32_t evt)
1901 {
1902         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1903
1904         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1905         return ndlp->nlp_state;
1906 }
1907
1908 static uint32_t
1909 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1910                          void *arg, uint32_t evt)
1911 {
1912         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1913
1914         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1915         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1916         return ndlp->nlp_state;
1917 }
1918
1919 static uint32_t
1920 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1921                          void *arg, uint32_t evt)
1922 {
1923         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1924
1925         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1926         return ndlp->nlp_state;
1927 }
1928
1929 static uint32_t
1930 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1931                            void *arg, uint32_t evt)
1932 {
1933         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1934
1935         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1936         return ndlp->nlp_state;
1937 }
1938
1939 static uint32_t
1940 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1941                          void *arg, uint32_t evt)
1942 {
1943         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1944
1945         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1946         return ndlp->nlp_state;
1947 }
1948
1949 static uint32_t
1950 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1951                              struct lpfc_nodelist *ndlp,
1952                              void *arg,
1953                              uint32_t evt)
1954 {
1955         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1956
1957         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1958         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1959         spin_lock_irq(shost->host_lock);
1960         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1961         spin_unlock_irq(shost->host_lock);
1962         lpfc_disc_set_adisc(vport, ndlp);
1963
1964         return ndlp->nlp_state;
1965 }
1966
1967 static uint32_t
1968 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1969                            void *arg, uint32_t evt)
1970 {
1971         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1972
1973         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1974         return ndlp->nlp_state;
1975 }
1976
1977 static uint32_t
1978 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1979                           void *arg, uint32_t evt)
1980 {
1981         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1982
1983         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1984         return ndlp->nlp_state;
1985 }
1986
1987 static uint32_t
1988 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1989                           void *arg, uint32_t evt)
1990 {
1991         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1992
1993         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1994         return ndlp->nlp_state;
1995 }
1996
1997 static uint32_t
1998 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1999                             struct lpfc_nodelist *ndlp,
2000                             void *arg, uint32_t evt)
2001 {
2002         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2003
2004         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2005         return ndlp->nlp_state;
2006 }
2007
2008 static uint32_t
2009 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2010                           void *arg, uint32_t evt)
2011 {
2012         struct lpfc_hba  *phba = vport->phba;
2013         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2014
2015         /* flush the target */
2016         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2017                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2018
2019         /* Treat like rcv logo */
2020         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2021         return ndlp->nlp_state;
2022 }
2023
2024 static uint32_t
2025 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2026                               struct lpfc_nodelist *ndlp,
2027                               void *arg,
2028                               uint32_t evt)
2029 {
2030         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2031
2032         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2033         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2034         spin_lock_irq(shost->host_lock);
2035         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2036         spin_unlock_irq(shost->host_lock);
2037         lpfc_disc_set_adisc(vport, ndlp);
2038         return ndlp->nlp_state;
2039 }
2040
2041 static uint32_t
2042 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2043                         void *arg, uint32_t evt)
2044 {
2045         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2046         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2047
2048         /* Ignore PLOGI if we have an outstanding LOGO */
2049         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2050                 return ndlp->nlp_state;
2051         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2052                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2053                 spin_lock_irq(shost->host_lock);
2054                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2055                 spin_unlock_irq(shost->host_lock);
2056         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2057                 /* send PLOGI immediately, move to PLOGI issue state */
2058                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2059                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2060                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2061                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2062                 }
2063         }
2064         return ndlp->nlp_state;
2065 }
2066
2067 static uint32_t
2068 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2069                        void *arg, uint32_t evt)
2070 {
2071         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2072         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2073         struct ls_rjt     stat;
2074
2075         memset(&stat, 0, sizeof (struct ls_rjt));
2076         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2077         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2078         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2079
2080         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2081                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2082                         spin_lock_irq(shost->host_lock);
2083                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2084                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2085                         spin_unlock_irq(shost->host_lock);
2086                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2087                         lpfc_issue_els_adisc(vport, ndlp, 0);
2088                 } else {
2089                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2090                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2091                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2092                 }
2093         }
2094         return ndlp->nlp_state;
2095 }
2096
2097 static uint32_t
2098 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2099                        void *arg, uint32_t evt)
2100 {
2101         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2102
2103         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2104         return ndlp->nlp_state;
2105 }
2106
2107 static uint32_t
2108 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2109                          void *arg, uint32_t evt)
2110 {
2111         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2112
2113         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2114         /*
2115          * Do not start discovery if discovery is about to start
2116          * or discovery in progress for this node. Starting discovery
2117          * here will affect the counting of discovery threads.
2118          */
2119         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2120             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2121                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2122                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2123                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2124                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2125                         lpfc_issue_els_adisc(vport, ndlp, 0);
2126                 } else {
2127                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2128                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2129                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2130                 }
2131         }
2132         return ndlp->nlp_state;
2133 }
2134
2135 static uint32_t
2136 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2137                        void *arg, uint32_t evt)
2138 {
2139         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2140         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2141
2142         spin_lock_irq(shost->host_lock);
2143         ndlp->nlp_flag |= NLP_LOGO_ACC;
2144         spin_unlock_irq(shost->host_lock);
2145
2146         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2147
2148         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2149                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
2150                 spin_lock_irq(shost->host_lock);
2151                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2152                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2153                 spin_unlock_irq(shost->host_lock);
2154                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2155         } else {
2156                 spin_lock_irq(shost->host_lock);
2157                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2158                 spin_unlock_irq(shost->host_lock);
2159         }
2160         return ndlp->nlp_state;
2161 }
2162
2163 static uint32_t
2164 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2165                          void *arg, uint32_t evt)
2166 {
2167         struct lpfc_iocbq *cmdiocb, *rspiocb;
2168         IOCB_t *irsp;
2169         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2170
2171         cmdiocb = (struct lpfc_iocbq *) arg;
2172         rspiocb = cmdiocb->context_un.rsp_iocb;
2173
2174         irsp = &rspiocb->iocb;
2175         if (irsp->ulpStatus) {
2176                 spin_lock_irq(shost->host_lock);
2177                 ndlp->nlp_flag |= NLP_DEFER_RM;
2178                 spin_unlock_irq(shost->host_lock);
2179                 return NLP_STE_FREED_NODE;
2180         }
2181         return ndlp->nlp_state;
2182 }
2183
2184 static uint32_t
2185 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2186                         void *arg, uint32_t evt)
2187 {
2188         struct lpfc_iocbq *cmdiocb, *rspiocb;
2189         IOCB_t *irsp;
2190
2191         cmdiocb = (struct lpfc_iocbq *) arg;
2192         rspiocb = cmdiocb->context_un.rsp_iocb;
2193
2194         irsp = &rspiocb->iocb;
2195         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2196                 lpfc_drop_node(vport, ndlp);
2197                 return NLP_STE_FREED_NODE;
2198         }
2199         return ndlp->nlp_state;
2200 }
2201
2202 static uint32_t
2203 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2204                         void *arg, uint32_t evt)
2205 {
2206         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2207
2208         /* For the fabric port just clear the fc flags. */
2209         if (ndlp->nlp_DID == Fabric_DID) {
2210                 spin_lock_irq(shost->host_lock);
2211                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2212                 spin_unlock_irq(shost->host_lock);
2213         }
2214         lpfc_unreg_rpi(vport, ndlp);
2215         return ndlp->nlp_state;
2216 }
2217
2218 static uint32_t
2219 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2220                          void *arg, uint32_t evt)
2221 {
2222         struct lpfc_iocbq *cmdiocb, *rspiocb;
2223         IOCB_t *irsp;
2224
2225         cmdiocb = (struct lpfc_iocbq *) arg;
2226         rspiocb = cmdiocb->context_un.rsp_iocb;
2227
2228         irsp = &rspiocb->iocb;
2229         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2230                 lpfc_drop_node(vport, ndlp);
2231                 return NLP_STE_FREED_NODE;
2232         }
2233         return ndlp->nlp_state;
2234 }
2235
2236 static uint32_t
2237 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2238                             struct lpfc_nodelist *ndlp,
2239                             void *arg, uint32_t evt)
2240 {
2241         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2242         MAILBOX_t    *mb = &pmb->u.mb;
2243
2244         if (!mb->mbxStatus) {
2245                 /* SLI4 ports have preallocated logical rpis. */
2246                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2247                         ndlp->nlp_rpi = mb->un.varWords[0];
2248                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2249         } else {
2250                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2251                         lpfc_drop_node(vport, ndlp);
2252                         return NLP_STE_FREED_NODE;
2253                 }
2254         }
2255         return ndlp->nlp_state;
2256 }
2257
2258 static uint32_t
2259 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2260                         void *arg, uint32_t evt)
2261 {
2262         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2263
2264         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2265                 spin_lock_irq(shost->host_lock);
2266                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2267                 spin_unlock_irq(shost->host_lock);
2268                 return ndlp->nlp_state;
2269         }
2270         lpfc_drop_node(vport, ndlp);
2271         return NLP_STE_FREED_NODE;
2272 }
2273
2274 static uint32_t
2275 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2276                            void *arg, uint32_t evt)
2277 {
2278         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2279
2280         /* Don't do anything that will mess up processing of the
2281          * previous RSCN.
2282          */
2283         if (vport->fc_flag & FC_RSCN_DEFERRED)
2284                 return ndlp->nlp_state;
2285
2286         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2287         spin_lock_irq(shost->host_lock);
2288         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2289         spin_unlock_irq(shost->host_lock);
2290         return ndlp->nlp_state;
2291 }
2292
2293
2294 /* This next section defines the NPort Discovery State Machine */
2295
2296 /* There are 4 different double linked lists nodelist entries can reside on.
2297  * The plogi list and adisc list are used when Link Up discovery or RSCN
2298  * processing is needed. Each list holds the nodes that we will send PLOGI
2299  * or ADISC on. These lists will keep track of what nodes will be effected
2300  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2301  * The unmapped_list will contain all nodes that we have successfully logged
2302  * into at the Fibre Channel level. The mapped_list will contain all nodes
2303  * that are mapped FCP targets.
2304  */
2305 /*
2306  * The bind list is a list of undiscovered (potentially non-existent) nodes
2307  * that we have saved binding information on. This information is used when
2308  * nodes transition from the unmapped to the mapped list.
2309  */
2310 /* For UNUSED_NODE state, the node has just been allocated .
2311  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2312  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2313  * and put on the unmapped list. For ADISC processing, the node is taken off
2314  * the ADISC list and placed on either the mapped or unmapped list (depending
2315  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2316  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2317  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2318  * node, the node is taken off the unmapped list. The binding list is checked
2319  * for a valid binding, or a binding is automatically assigned. If binding
2320  * assignment is unsuccessful, the node is left on the unmapped list. If
2321  * binding assignment is successful, the associated binding list entry (if
2322  * any) is removed, and the node is placed on the mapped list.
2323  */
2324 /*
2325  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2326  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2327  * expire, all effected nodes will receive a DEVICE_RM event.
2328  */
2329 /*
2330  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2331  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2332  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2333  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2334  * we will first process the ADISC list.  32 entries are processed initially and
2335  * ADISC is initited for each one.  Completions / Events for each node are
2336  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2337  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2338  * waiting, and the ADISC list count is identically 0, then we are done. For
2339  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2340  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2341  * list.  32 entries are processed initially and PLOGI is initited for each one.
2342  * Completions / Events for each node are funnelled thru the state machine.  As
2343  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2344  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2345  * indentically 0, then we are done. We have now completed discovery / RSCN
2346  * handling. Upon completion, ALL nodes should be on either the mapped or
2347  * unmapped lists.
2348  */
2349
2350 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2351      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2352         /* Action routine                  Event       Current State  */
2353         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2354         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2355         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2356         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2357         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2358         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2359         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2360         lpfc_disc_illegal,              /* CMPL_PRLI       */
2361         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2362         lpfc_disc_illegal,              /* CMPL_ADISC      */
2363         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2364         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2365         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2366
2367         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2368         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2369         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2370         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2371         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2372         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2373         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2374         lpfc_disc_illegal,              /* CMPL_PRLI       */
2375         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2376         lpfc_disc_illegal,              /* CMPL_ADISC      */
2377         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2378         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2379         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2380
2381         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2382         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2383         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2384         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2385         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2386         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2387         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2388         lpfc_disc_illegal,              /* CMPL_PRLI       */
2389         lpfc_disc_illegal,              /* CMPL_LOGO       */
2390         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2391         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2392         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2393         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2394
2395         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2396         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2397         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2398         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2399         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2400         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2401         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2402         lpfc_disc_illegal,              /* CMPL_PRLI       */
2403         lpfc_disc_illegal,              /* CMPL_LOGO       */
2404         lpfc_disc_illegal,              /* CMPL_ADISC      */
2405         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2406         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2407         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2408
2409         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2410         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2411         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2412         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2413         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2414         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2415         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2416         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2417         lpfc_disc_illegal,              /* CMPL_LOGO       */
2418         lpfc_disc_illegal,              /* CMPL_ADISC      */
2419         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2420         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2421         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2422
2423         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2424         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2425         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2426         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2427         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2428         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2429         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2430         lpfc_disc_illegal,              /* CMPL_PRLI       */
2431         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2432         lpfc_disc_illegal,              /* CMPL_ADISC      */
2433         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2434         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2435         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2436
2437         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2438         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2439         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2440         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2441         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2442         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2443         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2444         lpfc_disc_illegal,              /* CMPL_PRLI       */
2445         lpfc_disc_illegal,              /* CMPL_LOGO       */
2446         lpfc_disc_illegal,              /* CMPL_ADISC      */
2447         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2448         lpfc_disc_illegal,              /* DEVICE_RM       */
2449         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2450
2451         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2452         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2453         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2454         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2455         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2456         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2457         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2458         lpfc_disc_illegal,              /* CMPL_PRLI       */
2459         lpfc_disc_illegal,              /* CMPL_LOGO       */
2460         lpfc_disc_illegal,              /* CMPL_ADISC      */
2461         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2462         lpfc_disc_illegal,              /* DEVICE_RM       */
2463         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2464
2465         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2466         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2467         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2468         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2469         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2470         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2471         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2472         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2473         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2474         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2475         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2476         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2477         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2478 };
2479
2480 int
2481 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2482                         void *arg, uint32_t evt)
2483 {
2484         uint32_t cur_state, rc;
2485         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2486                          uint32_t);
2487         uint32_t got_ndlp = 0;
2488
2489         if (lpfc_nlp_get(ndlp))
2490                 got_ndlp = 1;
2491
2492         cur_state = ndlp->nlp_state;
2493
2494         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2495         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2496                          "0211 DSM in event x%x on NPort x%x in "
2497                          "state %d Data: x%x\n",
2498                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2499
2500         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2501                  "DSM in:          evt:%d ste:%d did:x%x",
2502                 evt, cur_state, ndlp->nlp_DID);
2503
2504         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2505         rc = (func) (vport, ndlp, arg, evt);
2506
2507         /* DSM out state <rc> on NPort <nlp_DID> */
2508         if (got_ndlp) {
2509                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2510                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2511                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2512
2513                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2514                         "DSM out:         ste:%d did:x%x flg:x%x",
2515                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2516                 /* Decrement the ndlp reference count held for this function */
2517                 lpfc_nlp_put(ndlp);
2518         } else {
2519                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2520                         "0213 DSM out state %d on NPort free\n", rc);
2521
2522                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2523                         "DSM out:         ste:%d did:x%x flg:x%x",
2524                         rc, 0, 0);
2525         }
2526
2527         return rc;
2528 }