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) 2004-2015 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/slab.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_sli4.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45
  46 /* Called to verify a rcv'ed ADISC was intended for us. */
  47 static int
  48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  49                  struct lpfc_name *nn, struct lpfc_name *pn)
  50 {
  51         /* First, we MUST have a RPI registered */
  52         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  53                 return 0;
  54
  55         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  56          * table entry for that node.
  57          */
  58         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  59                 return 0;
  60
  61         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  62                 return 0;
  63
  64         /* we match, return success */
  65         return 1;
  66 }
  67
  68 int
  69 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  70                  struct serv_parm *sp, uint32_t class, int flogi)
  71 {
  72         volatile struct serv_parm *hsp = &vport->fc_sparam;
  73         uint16_t hsp_value, ssp_value = 0;
  74
  75         /*
  76          * The receive data field size and buffer-to-buffer receive data field
  77          * size entries are 16 bits but are represented as two 8-bit fields in
  78          * the driver data structure to account for rsvd bits and other control
  79          * bits.  Reconstruct and compare the fields as a 16-bit values before
  80          * correcting the byte values.
  81          */
  82         if (sp->cls1.classValid) {
  83                 if (!flogi) {
  84                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  85                                      hsp->cls1.rcvDataSizeLsb);
  86                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  87                                      sp->cls1.rcvDataSizeLsb);
  88                         if (!ssp_value)
  89                                 goto bad_service_param;
  90                         if (ssp_value > hsp_value) {
  91                                 sp->cls1.rcvDataSizeLsb =
  92                                         hsp->cls1.rcvDataSizeLsb;
  93                                 sp->cls1.rcvDataSizeMsb =
  94                                         hsp->cls1.rcvDataSizeMsb;
  95                         }
  96                 }
  97         } else if (class == CLASS1)
  98                 goto bad_service_param;
  99         if (sp->cls2.classValid) {
 100                 if (!flogi) {
 101                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 102                                      hsp->cls2.rcvDataSizeLsb);
 103                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 104                                      sp->cls2.rcvDataSizeLsb);
 105                         if (!ssp_value)
 106                                 goto bad_service_param;
 107                         if (ssp_value > hsp_value) {
 108                                 sp->cls2.rcvDataSizeLsb =
 109                                         hsp->cls2.rcvDataSizeLsb;
 110                                 sp->cls2.rcvDataSizeMsb =
 111                                         hsp->cls2.rcvDataSizeMsb;
 112                         }
 113                 }
 114         } else if (class == CLASS2)
 115                 goto bad_service_param;
 116         if (sp->cls3.classValid) {
 117                 if (!flogi) {
 118                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 119                                      hsp->cls3.rcvDataSizeLsb);
 120                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 121                                      sp->cls3.rcvDataSizeLsb);
 122                         if (!ssp_value)
 123                                 goto bad_service_param;
 124                         if (ssp_value > hsp_value) {
 125                                 sp->cls3.rcvDataSizeLsb =
 126                                         hsp->cls3.rcvDataSizeLsb;
 127                                 sp->cls3.rcvDataSizeMsb =
 128                                         hsp->cls3.rcvDataSizeMsb;
 129                         }
 130                 }
 131         } else if (class == CLASS3)
 132                 goto bad_service_param;
 133
 134         /*
 135          * Preserve the upper four bits of the MSB from the PLOGI response.
 136          * These bits contain the Buffer-to-Buffer State Change Number
 137          * from the target and need to be passed to the FW.
 138          */
 139         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 140         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 141         if (ssp_value > hsp_value) {
 142                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 143                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 144                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 145         }
 146
 147         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 148         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 149         return 1;
 150 bad_service_param:
 151         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 152                          "0207 Device %x "
 153                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 154                          "invalid service parameters.  Ignoring device.\n",
 155                          ndlp->nlp_DID,
 156                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 157                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 158                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 159                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 160         return 0;
 161 }
 162
 163 static void *
 164 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 165                         struct lpfc_iocbq *rspiocb)
 166 {
 167         struct lpfc_dmabuf *pcmd, *prsp;
 168         uint32_t *lp;
 169         void     *ptr = NULL;
 170         IOCB_t   *irsp;
 171
 172         irsp = &rspiocb->iocb;
 173         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 174
 175         /* For lpfc_els_abort, context2 could be zero'ed to delay
 176          * freeing associated memory till after ABTS completes.
 177          */
 178         if (pcmd) {
 179                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 180                                        list);
 181                 if (prsp) {
 182                         lp = (uint32_t *) prsp->virt;
 183                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 184                 }
 185         } else {
 186                 /* Force ulpStatus error since we are returning NULL ptr */
 187                 if (!(irsp->ulpStatus)) {
 188                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 189                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 190                 }
 191                 ptr = NULL;
 192         }
 193         return ptr;
 194 }
 195
 196
 197
 198 /*
 199  * Free resources / clean up outstanding I/Os
 200  * associated with a LPFC_NODELIST entry. This
 201  * routine effectively results in a "software abort".
 202  */
 203 int
 204 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 205 {
 206         LIST_HEAD(abort_list);
 207         struct lpfc_sli  *psli = &phba->sli;
 208         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 209         struct lpfc_iocbq *iocb, *next_iocb;
 210
 211         /* Abort outstanding I/O on NPort <nlp_DID> */
 212         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 213                          "2819 Abort outstanding I/O on NPort x%x "
 214                          "Data: x%x x%x x%x\n",
 215                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 216                          ndlp->nlp_rpi);
 217         /* Clean up all fabric IOs first.*/
 218         lpfc_fabric_abort_nport(ndlp);
 219
 220         /*
 221          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 222          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 223          * txcmplq so that the abort operation completes them successfully.
 224          */
 225         spin_lock_irq(&phba->hbalock);
 226         if (phba->sli_rev == LPFC_SLI_REV4)
 227                 spin_lock(&pring->ring_lock);
 228         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 229         /* Add to abort_list on on NDLP match. */
 230                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 231                         list_add_tail(&iocb->dlist, &abort_list);
 232         }
 233         if (phba->sli_rev == LPFC_SLI_REV4)
 234                 spin_unlock(&pring->ring_lock);
 235         spin_unlock_irq(&phba->hbalock);
 236
 237         /* Abort the targeted IOs and remove them from the abort list. */
 238         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 239                         spin_lock_irq(&phba->hbalock);
 240                         list_del_init(&iocb->dlist);
 241                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 242                         spin_unlock_irq(&phba->hbalock);
 243         }
 244
 245         INIT_LIST_HEAD(&abort_list);
 246
 247         /* Now process the txq */
 248         spin_lock_irq(&phba->hbalock);
 249         if (phba->sli_rev == LPFC_SLI_REV4)
 250                 spin_lock(&pring->ring_lock);
 251
 252         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 253                 /* Check to see if iocb matches the nport we are looking for */
 254                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 255                         list_del_init(&iocb->list);
 256                         list_add_tail(&iocb->list, &abort_list);
 257                 }
 258         }
 259
 260         if (phba->sli_rev == LPFC_SLI_REV4)
 261                 spin_unlock(&pring->ring_lock);
 262         spin_unlock_irq(&phba->hbalock);
 263
 264         /* Cancel all the IOCBs from the completions list */
 265         lpfc_sli_cancel_iocbs(phba, &abort_list,
 266                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 267
 268         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 269         return 0;
 270 }
 271
 272 static int
 273 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 274                struct lpfc_iocbq *cmdiocb)
 275 {
 276         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 277         struct lpfc_hba    *phba = vport->phba;
 278         struct lpfc_dmabuf *pcmd;
 279         uint64_t nlp_portwwn = 0;
 280         uint32_t *lp;
 281         IOCB_t *icmd;
 282         struct serv_parm *sp;
 283         LPFC_MBOXQ_t *mbox;
 284         struct ls_rjt stat;
 285         int rc;
 286
 287         memset(&stat, 0, sizeof (struct ls_rjt));
 288         if (vport->port_state <= LPFC_FDISC) {
 289                 /* Before responding to PLOGI, check for pt2pt mode.
 290                  * If we are pt2pt, with an outstanding FLOGI, abort
 291                  * the FLOGI and resend it first.
 292                  */
 293                 if (vport->fc_flag & FC_PT2PT) {
 294                          lpfc_els_abort_flogi(phba);
 295                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 296                                 /* If the other side is supposed to initiate
 297                                  * the PLOGI anyway, just ACC it now and
 298                                  * move on with discovery.
 299                                  */
 300                                 phba->fc_edtov = FF_DEF_EDTOV;
 301                                 phba->fc_ratov = FF_DEF_RATOV;
 302                                 /* Start discovery - this should just do
 303                                    CLEAR_LA */
 304                                 lpfc_disc_start(vport);
 305                         } else
 306                                 lpfc_initial_flogi(vport);
 307                 } else {
 308                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 309                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 310                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 311                                             ndlp, NULL);
 312                         return 0;
 313                 }
 314         }
 315         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 316         lp = (uint32_t *) pcmd->virt;
 317         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 318         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 319                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 320                                  "0140 PLOGI Reject: invalid nname\n");
 321                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 322                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 323                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 324                         NULL);
 325                 return 0;
 326         }
 327         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 328                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 329                                  "0141 PLOGI Reject: invalid pname\n");
 330                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 331                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 332                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 333                         NULL);
 334                 return 0;
 335         }
 336
 337         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 338         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 339                 /* Reject this request because invalid parameters */
 340                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 341                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 342                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 343                         NULL);
 344                 return 0;
 345         }
 346         icmd = &cmdiocb->iocb;
 347
 348         /* PLOGI chkparm OK */
 349         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 350                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 351                          "x%x x%x x%x\n",
 352                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 353                          ndlp->nlp_rpi, vport->port_state,
 354                          vport->fc_flag);
 355
 356         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 357                 ndlp->nlp_fcp_info |= CLASS2;
 358         else
 359                 ndlp->nlp_fcp_info |= CLASS3;
 360
 361         ndlp->nlp_class_sup = 0;
 362         if (sp->cls1.classValid)
 363                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 364         if (sp->cls2.classValid)
 365                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 366         if (sp->cls3.classValid)
 367                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 368         if (sp->cls4.classValid)
 369                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 370         ndlp->nlp_maxframe =
 371                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 372
 373         /* if already logged in, do implicit logout */
 374         switch (ndlp->nlp_state) {
 375         case  NLP_STE_NPR_NODE:
 376                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 377                         break;
 378         case  NLP_STE_REG_LOGIN_ISSUE:
 379         case  NLP_STE_PRLI_ISSUE:
 380         case  NLP_STE_UNMAPPED_NODE:
 381         case  NLP_STE_MAPPED_NODE:
 382                 /* lpfc_plogi_confirm_nport skips fabric did, handle it here */
 383                 if (!(ndlp->nlp_type & NLP_FABRIC)) {
 384                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 385                                          ndlp, NULL);
 386                         return 1;
 387                 }
 388                 if (nlp_portwwn != 0 &&
 389                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 390                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 391                                          "0143 PLOGI recv'd from DID: x%x "
 392                                          "WWPN changed: old %llx new %llx\n",
 393                                          ndlp->nlp_DID,
 394                                          (unsigned long long)nlp_portwwn,
 395                                          (unsigned long long)
 396                                          wwn_to_u64(sp->portName.u.wwn));
 397
 398                 ndlp->nlp_prev_state = ndlp->nlp_state;
 399                 /* rport needs to be unregistered first */
 400                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 401                 break;
 402         }
 403
 404         /* Check for Nport to NPort pt2pt protocol */
 405         if ((vport->fc_flag & FC_PT2PT) &&
 406             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 407
 408                 /* rcv'ed PLOGI decides what our NPortId will be */
 409                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 410                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 411                 if (mbox == NULL)
 412                         goto out;
 413                 lpfc_config_link(phba, mbox);
 414                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 415                 mbox->vport = vport;
 416                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 417                 if (rc == MBX_NOT_FINISHED) {
 418                         mempool_free(mbox, phba->mbox_mem_pool);
 419                         goto out;
 420                 }
 421                 /*
 422                  * For SLI4, the VFI/VPI are registered AFTER the
 423                  * Nport with the higher WWPN sends us a PLOGI with
 424                  * our assigned NPortId.
 425                  */
 426                 if (phba->sli_rev == LPFC_SLI_REV4)
 427                         lpfc_issue_reg_vfi(vport);
 428
 429                 lpfc_can_disctmo(vport);
 430         }
 431         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 432         if (!mbox)
 433                 goto out;
 434
 435         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 436         if (phba->sli_rev == LPFC_SLI_REV4)
 437                 lpfc_unreg_rpi(vport, ndlp);
 438
 439         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 440                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 441         if (rc) {
 442                 mempool_free(mbox, phba->mbox_mem_pool);
 443                 goto out;
 444         }
 445
 446         /* ACC PLOGI rsp command needs to execute first,
 447          * queue this mbox command to be processed later.
 448          */
 449         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 450         /*
 451          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 452          * command issued in lpfc_cmpl_els_acc().
 453          */
 454         mbox->vport = vport;
 455         spin_lock_irq(shost->host_lock);
 456         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 457         spin_unlock_irq(shost->host_lock);
 458
 459         /*
 460          * If there is an outstanding PLOGI issued, abort it before
 461          * sending ACC rsp for received PLOGI. If pending plogi
 462          * is not canceled here, the plogi will be rejected by
 463          * remote port and will be retried. On a configuration with
 464          * single discovery thread, this will cause a huge delay in
 465          * discovery. Also this will cause multiple state machines
 466          * running in parallel for this node.
 467          */
 468         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 469                 /* software abort outstanding PLOGI */
 470                 lpfc_els_abort(phba, ndlp);
 471         }
 472
 473         if ((vport->port_type == LPFC_NPIV_PORT &&
 474              vport->cfg_restrict_login)) {
 475
 476                 /* In order to preserve RPIs, we want to cleanup
 477                  * the default RPI the firmware created to rcv
 478                  * this ELS request. The only way to do this is
 479                  * to register, then unregister the RPI.
 480                  */
 481                 spin_lock_irq(shost->host_lock);
 482                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 483                 spin_unlock_irq(shost->host_lock);
 484                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 485                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 486                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 487                         ndlp, mbox);
 488                 if (rc)
 489                         mempool_free(mbox, phba->mbox_mem_pool);
 490                 return 1;
 491         }
 492         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 493         if (rc)
 494                 mempool_free(mbox, phba->mbox_mem_pool);
 495         return 1;
 496 out:
 497         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 498         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 499         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 500         return 0;
 501 }
 502
 503 /**
 504  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 505  * @phba: pointer to lpfc hba data structure.
 506  * @mboxq: pointer to mailbox object
 507  *
 508  * This routine is invoked to issue a completion to a rcv'ed
 509  * ADISC or PDISC after the paused RPI has been resumed.
 510  **/
 511 static void
 512 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 513 {
 514         struct lpfc_vport *vport;
 515         struct lpfc_iocbq *elsiocb;
 516         struct lpfc_nodelist *ndlp;
 517         uint32_t cmd;
 518
 519         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 520         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 521         vport = mboxq->vport;
 522         cmd = elsiocb->drvrTimeout;
 523
 524         if (cmd == ELS_CMD_ADISC) {
 525                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 526         } else {
 527                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 528                         ndlp, NULL);
 529         }
 530         kfree(elsiocb);
 531         mempool_free(mboxq, phba->mbox_mem_pool);
 532 }
 533
 534 static int
 535 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 536                 struct lpfc_iocbq *cmdiocb)
 537 {
 538         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 539         struct lpfc_iocbq  *elsiocb;
 540         struct lpfc_dmabuf *pcmd;
 541         struct serv_parm   *sp;
 542         struct lpfc_name   *pnn, *ppn;
 543         struct ls_rjt stat;
 544         ADISC *ap;
 545         IOCB_t *icmd;
 546         uint32_t *lp;
 547         uint32_t cmd;
 548
 549         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 550         lp = (uint32_t *) pcmd->virt;
 551
 552         cmd = *lp++;
 553         if (cmd == ELS_CMD_ADISC) {
 554                 ap = (ADISC *) lp;
 555                 pnn = (struct lpfc_name *) & ap->nodeName;
 556                 ppn = (struct lpfc_name *) & ap->portName;
 557         } else {
 558                 sp = (struct serv_parm *) lp;
 559                 pnn = (struct lpfc_name *) & sp->nodeName;
 560                 ppn = (struct lpfc_name *) & sp->portName;
 561         }
 562
 563         icmd = &cmdiocb->iocb;
 564         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 565
 566                 /*
 567                  * As soon as  we send ACC, the remote NPort can
 568                  * start sending us data. Thus, for SLI4 we must
 569                  * resume the RPI before the ACC goes out.
 570                  */
 571                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 572                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 573                                 GFP_KERNEL);
 574                         if (elsiocb) {
 575
 576                                 /* Save info from cmd IOCB used in rsp */
 577                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 578                                         sizeof(struct lpfc_iocbq));
 579
 580                                 /* Save the ELS cmd */
 581                                 elsiocb->drvrTimeout = cmd;
 582
 583                                 lpfc_sli4_resume_rpi(ndlp,
 584                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 585                                 goto out;
 586                         }
 587                 }
 588
 589                 if (cmd == ELS_CMD_ADISC) {
 590                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 591                 } else {
 592                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 593                                 ndlp, NULL);
 594                 }
 595 out:
 596                 /* If we are authenticated, move to the proper state */
 597                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 598                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 599                 else
 600                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 601
 602                 return 1;
 603         }
 604         /* Reject this request because invalid parameters */
 605         stat.un.b.lsRjtRsvd0 = 0;
 606         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 607         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 608         stat.un.b.vendorUnique = 0;
 609         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 610
 611         /* 1 sec timeout */
 612         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 613
 614         spin_lock_irq(shost->host_lock);
 615         ndlp->nlp_flag |= NLP_DELAY_TMO;
 616         spin_unlock_irq(shost->host_lock);
 617         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 618         ndlp->nlp_prev_state = ndlp->nlp_state;
 619         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 620         return 0;
 621 }
 622
 623 static int
 624 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 625               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 626 {
 627         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 628         struct lpfc_hba    *phba = vport->phba;
 629         struct lpfc_vport **vports;
 630         int i, active_vlink_present = 0 ;
 631
 632         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 633         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 634          * PLOGIs during LOGO storms from a device.
 635          */
 636         spin_lock_irq(shost->host_lock);
 637         ndlp->nlp_flag |= NLP_LOGO_ACC;
 638         spin_unlock_irq(shost->host_lock);
 639         if (els_cmd == ELS_CMD_PRLO)
 640                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 641         else
 642                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 643         if (ndlp->nlp_DID == Fabric_DID) {
 644                 if (vport->port_state <= LPFC_FDISC)
 645                         goto out;
 646                 lpfc_linkdown_port(vport);
 647                 spin_lock_irq(shost->host_lock);
 648                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 649                 spin_unlock_irq(shost->host_lock);
 650                 vports = lpfc_create_vport_work_array(phba);
 651                 if (vports) {
 652                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 653                                         i++) {
 654                                 if ((!(vports[i]->fc_flag &
 655                                         FC_VPORT_LOGO_RCVD)) &&
 656                                         (vports[i]->port_state > LPFC_FDISC)) {
 657                                         active_vlink_present = 1;
 658                                         break;
 659                                 }
 660                         }
 661                         lpfc_destroy_vport_work_array(phba, vports);
 662                 }
 663
 664                 /*
 665                  * Don't re-instantiate if vport is marked for deletion.
 666                  * If we are here first then vport_delete is going to wait
 667                  * for discovery to complete.
 668                  */
 669                 if (!(vport->load_flag & FC_UNLOADING) &&
 670                                         active_vlink_present) {
 671                         /*
 672                          * If there are other active VLinks present,
 673                          * re-instantiate the Vlink using FDISC.
 674                          */
 675                         mod_timer(&ndlp->nlp_delayfunc,
 676                                   jiffies + msecs_to_jiffies(1000));
 677                         spin_lock_irq(shost->host_lock);
 678                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 679                         spin_unlock_irq(shost->host_lock);
 680                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 681                         vport->port_state = LPFC_FDISC;
 682                 } else {
 683                         spin_lock_irq(shost->host_lock);
 684                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 685                         spin_unlock_irq(shost->host_lock);
 686                         lpfc_retry_pport_discovery(phba);
 687                 }
 688         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 689                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 690                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 691                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 692                 /* Only try to re-login if this is NOT a Fabric Node */
 693                 mod_timer(&ndlp->nlp_delayfunc,
 694                           jiffies + msecs_to_jiffies(1000 * 1));
 695                 spin_lock_irq(shost->host_lock);
 696                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 697                 spin_unlock_irq(shost->host_lock);
 698
 699                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 700         }
 701 out:
 702         ndlp->nlp_prev_state = ndlp->nlp_state;
 703         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 704
 705         spin_lock_irq(shost->host_lock);
 706         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 707         spin_unlock_irq(shost->host_lock);
 708         /* The driver has to wait until the ACC completes before it continues
 709          * processing the LOGO.  The action will resume in
 710          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 711          * unreg_login, the driver waits so the ACC does not get aborted.
 712          */
 713         return 0;
 714 }
 715
 716 static void
 717 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 718               struct lpfc_iocbq *cmdiocb)
 719 {
 720         struct lpfc_dmabuf *pcmd;
 721         uint32_t *lp;
 722         PRLI *npr;
 723         struct fc_rport *rport = ndlp->rport;
 724         u32 roles;
 725
 726         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 727         lp = (uint32_t *) pcmd->virt;
 728         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 729
 730         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 731         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 732         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 733         if (npr->prliType == PRLI_FCP_TYPE) {
 734                 if (npr->initiatorFunc)
 735                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 736                 if (npr->targetFunc) {
 737                         ndlp->nlp_type |= NLP_FCP_TARGET;
 738                         if (npr->writeXferRdyDis)
 739                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 740                 }
 741                 if (npr->Retry)
 742                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 743         }
 744         if (rport) {
 745                 /* We need to update the rport role values */
 746                 roles = FC_RPORT_ROLE_UNKNOWN;
 747                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 748                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 749                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 750                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 751
 752                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 753                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 754                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 755
 756                 fc_remote_port_rolechg(rport, roles);
 757         }
 758 }
 759
 760 static uint32_t
 761 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 762 {
 763         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 764
 765         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 766                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 767                 return 0;
 768         }
 769
 770         if (!(vport->fc_flag & FC_PT2PT)) {
 771                 /* Check config parameter use-adisc or FCP-2 */
 772                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 773                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 774                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 775                         spin_lock_irq(shost->host_lock);
 776                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 777                         spin_unlock_irq(shost->host_lock);
 778                         return 1;
 779                 }
 780         }
 781         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 782         lpfc_unreg_rpi(vport, ndlp);
 783         return 0;
 784 }
 785
 786 /**
 787  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 788  * @phba : Pointer to lpfc_hba structure.
 789  * @vport: Pointer to lpfc_vport structure.
 790  * @rpi  : rpi to be release.
 791  *
 792  * This function will send a unreg_login mailbox command to the firmware
 793  * to release a rpi.
 794  **/
 795 void
 796 lpfc_release_rpi(struct lpfc_hba *phba,
 797                 struct lpfc_vport *vport,
 798                 uint16_t rpi)
 799 {
 800         LPFC_MBOXQ_t *pmb;
 801         int rc;
 802
 803         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 804                         GFP_KERNEL);
 805         if (!pmb)
 806                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 807                         "2796 mailbox memory allocation failed \n");
 808         else {
 809                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 810                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 811                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 812                 if (rc == MBX_NOT_FINISHED)
 813                         mempool_free(pmb, phba->mbox_mem_pool);
 814         }
 815 }
 816
 817 static uint32_t
 818 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 819                   void *arg, uint32_t evt)
 820 {
 821         struct lpfc_hba *phba;
 822         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 823         MAILBOX_t *mb;
 824         uint16_t rpi;
 825
 826         phba = vport->phba;
 827         /* Release the RPI if reglogin completing */
 828         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 829                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 830                 (!pmb->u.mb.mbxStatus)) {
 831                 mb = &pmb->u.mb;
 832                 rpi = pmb->u.mb.un.varWords[0];
 833                 lpfc_release_rpi(phba, vport, rpi);
 834         }
 835         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 836                          "0271 Illegal State Transition: node x%x "
 837                          "event x%x, state x%x Data: x%x x%x\n",
 838                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 839                          ndlp->nlp_flag);
 840         return ndlp->nlp_state;
 841 }
 842
 843 static uint32_t
 844 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 845                   void *arg, uint32_t evt)
 846 {
 847         /* This transition is only legal if we previously
 848          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 849          * working on the same NPortID, do nothing for this thread
 850          * to stop it.
 851          */
 852         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 853                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 854                          "0272 Illegal State Transition: node x%x "
 855                          "event x%x, state x%x Data: x%x x%x\n",
 856                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 857                          ndlp->nlp_flag);
 858         }
 859         return ndlp->nlp_state;
 860 }
 861
 862 /* Start of Discovery State Machine routines */
 863
 864 static uint32_t
 865 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 866                            void *arg, uint32_t evt)
 867 {
 868         struct lpfc_iocbq *cmdiocb;
 869
 870         cmdiocb = (struct lpfc_iocbq *) arg;
 871
 872         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 873                 return ndlp->nlp_state;
 874         }
 875         return NLP_STE_FREED_NODE;
 876 }
 877
 878 static uint32_t
 879 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 880                          void *arg, uint32_t evt)
 881 {
 882         lpfc_issue_els_logo(vport, ndlp, 0);
 883         return ndlp->nlp_state;
 884 }
 885
 886 static uint32_t
 887 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 888                           void *arg, uint32_t evt)
 889 {
 890         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 891         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 892
 893         spin_lock_irq(shost->host_lock);
 894         ndlp->nlp_flag |= NLP_LOGO_ACC;
 895         spin_unlock_irq(shost->host_lock);
 896         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 897
 898         return ndlp->nlp_state;
 899 }
 900
 901 static uint32_t
 902 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 903                            void *arg, uint32_t evt)
 904 {
 905         return NLP_STE_FREED_NODE;
 906 }
 907
 908 static uint32_t
 909 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 910                            void *arg, uint32_t evt)
 911 {
 912         return NLP_STE_FREED_NODE;
 913 }
 914
 915 static uint32_t
 916 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 917                         struct lpfc_nodelist *ndlp,
 918                            void *arg, uint32_t evt)
 919 {
 920         return ndlp->nlp_state;
 921 }
 922
 923 static uint32_t
 924 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 925                            void *arg, uint32_t evt)
 926 {
 927         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 928         struct lpfc_hba   *phba = vport->phba;
 929         struct lpfc_iocbq *cmdiocb = arg;
 930         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 931         uint32_t *lp = (uint32_t *) pcmd->virt;
 932         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 933         struct ls_rjt stat;
 934         int port_cmp;
 935
 936         memset(&stat, 0, sizeof (struct ls_rjt));
 937
 938         /* For a PLOGI, we only accept if our portname is less
 939          * than the remote portname.
 940          */
 941         phba->fc_stat.elsLogiCol++;
 942         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 943                           sizeof(struct lpfc_name));
 944
 945         if (port_cmp >= 0) {
 946                 /* Reject this request because the remote node will accept
 947                    ours */
 948                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 949                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 950                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 951                         NULL);
 952         } else {
 953                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 954                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 955                     (vport->num_disc_nodes)) {
 956                         spin_lock_irq(shost->host_lock);
 957                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 958                         spin_unlock_irq(shost->host_lock);
 959                         /* Check if there are more PLOGIs to be sent */
 960                         lpfc_more_plogi(vport);
 961                         if (vport->num_disc_nodes == 0) {
 962                                 spin_lock_irq(shost->host_lock);
 963                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 964                                 spin_unlock_irq(shost->host_lock);
 965                                 lpfc_can_disctmo(vport);
 966                                 lpfc_end_rscn(vport);
 967                         }
 968                 }
 969         } /* If our portname was less */
 970
 971         return ndlp->nlp_state;
 972 }
 973
 974 static uint32_t
 975 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 976                           void *arg, uint32_t evt)
 977 {
 978         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 979         struct ls_rjt     stat;
 980
 981         memset(&stat, 0, sizeof (struct ls_rjt));
 982         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 983         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 984         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 985         return ndlp->nlp_state;
 986 }
 987
 988 static uint32_t
 989 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 990                           void *arg, uint32_t evt)
 991 {
 992         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 993
 994                                 /* software abort outstanding PLOGI */
 995         lpfc_els_abort(vport->phba, ndlp);
 996
 997         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 998         return ndlp->nlp_state;
 999 }
1000
1001 static uint32_t
1002 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1003                          void *arg, uint32_t evt)
1004 {
1005         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1006         struct lpfc_hba   *phba = vport->phba;
1007         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1008
1009         /* software abort outstanding PLOGI */
1010         lpfc_els_abort(phba, ndlp);
1011
1012         if (evt == NLP_EVT_RCV_LOGO) {
1013                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1014         } else {
1015                 lpfc_issue_els_logo(vport, ndlp, 0);
1016         }
1017
1018         /* Put ndlp in npr state set plogi timer for 1 sec */
1019         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1020         spin_lock_irq(shost->host_lock);
1021         ndlp->nlp_flag |= NLP_DELAY_TMO;
1022         spin_unlock_irq(shost->host_lock);
1023         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1024         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1025         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1026
1027         return ndlp->nlp_state;
1028 }
1029
1030 static uint32_t
1031 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1032                             struct lpfc_nodelist *ndlp,
1033                             void *arg,
1034                             uint32_t evt)
1035 {
1036         struct lpfc_hba    *phba = vport->phba;
1037         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1038         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1039         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1040         uint32_t *lp;
1041         IOCB_t *irsp;
1042         struct serv_parm *sp;
1043         LPFC_MBOXQ_t *mbox;
1044
1045         cmdiocb = (struct lpfc_iocbq *) arg;
1046         rspiocb = cmdiocb->context_un.rsp_iocb;
1047
1048         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1049                 /* Recovery from PLOGI collision logic */
1050                 return ndlp->nlp_state;
1051         }
1052
1053         irsp = &rspiocb->iocb;
1054
1055         if (irsp->ulpStatus)
1056                 goto out;
1057
1058         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1059
1060         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1061         if (!prsp)
1062                 goto out;
1063
1064         lp = (uint32_t *) prsp->virt;
1065         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1066
1067         /* Some switches have FDMI servers returning 0 for WWN */
1068         if ((ndlp->nlp_DID != FDMI_DID) &&
1069                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1070                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1071                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1072                                  "0142 PLOGI RSP: Invalid WWN.\n");
1073                 goto out;
1074         }
1075         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1076                 goto out;
1077         /* PLOGI chkparm OK */
1078         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1079                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1080                          ndlp->nlp_DID, ndlp->nlp_state,
1081                          ndlp->nlp_flag, ndlp->nlp_rpi);
1082         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1083                 ndlp->nlp_fcp_info |= CLASS2;
1084         else
1085                 ndlp->nlp_fcp_info |= CLASS3;
1086
1087         ndlp->nlp_class_sup = 0;
1088         if (sp->cls1.classValid)
1089                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1090         if (sp->cls2.classValid)
1091                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1092         if (sp->cls3.classValid)
1093                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1094         if (sp->cls4.classValid)
1095                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1096         ndlp->nlp_maxframe =
1097                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1098
1099         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1100         if (!mbox) {
1101                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1102                         "0133 PLOGI: no memory for reg_login "
1103                         "Data: x%x x%x x%x x%x\n",
1104                         ndlp->nlp_DID, ndlp->nlp_state,
1105                         ndlp->nlp_flag, ndlp->nlp_rpi);
1106                 goto out;
1107         }
1108
1109         lpfc_unreg_rpi(vport, ndlp);
1110
1111         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1112                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1113                 switch (ndlp->nlp_DID) {
1114                 case NameServer_DID:
1115                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1116                         break;
1117                 case FDMI_DID:
1118                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1119                         break;
1120                 default:
1121                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1122                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1123                 }
1124                 mbox->context2 = lpfc_nlp_get(ndlp);
1125                 mbox->vport = vport;
1126                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1127                     != MBX_NOT_FINISHED) {
1128                         lpfc_nlp_set_state(vport, ndlp,
1129                                            NLP_STE_REG_LOGIN_ISSUE);
1130                         return ndlp->nlp_state;
1131                 }
1132                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1133                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1134                 /* decrement node reference count to the failed mbox
1135                  * command
1136                  */
1137                 lpfc_nlp_put(ndlp);
1138                 mp = (struct lpfc_dmabuf *) mbox->context1;
1139                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1140                 kfree(mp);
1141                 mempool_free(mbox, phba->mbox_mem_pool);
1142
1143                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1144                                  "0134 PLOGI: cannot issue reg_login "
1145                                  "Data: x%x x%x x%x x%x\n",
1146                                  ndlp->nlp_DID, ndlp->nlp_state,
1147                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1148         } else {
1149                 mempool_free(mbox, phba->mbox_mem_pool);
1150
1151                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1152                                  "0135 PLOGI: cannot format reg_login "
1153                                  "Data: x%x x%x x%x x%x\n",
1154                                  ndlp->nlp_DID, ndlp->nlp_state,
1155                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1156         }
1157
1158
1159 out:
1160         if (ndlp->nlp_DID == NameServer_DID) {
1161                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1162                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1163                                  "0261 Cannot Register NameServer login\n");
1164         }
1165
1166         /*
1167         ** In case the node reference counter does not go to zero, ensure that
1168         ** the stale state for the node is not processed.
1169         */
1170
1171         ndlp->nlp_prev_state = ndlp->nlp_state;
1172         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1173         spin_lock_irq(shost->host_lock);
1174         ndlp->nlp_flag |= NLP_DEFER_RM;
1175         spin_unlock_irq(shost->host_lock);
1176         return NLP_STE_FREED_NODE;
1177 }
1178
1179 static uint32_t
1180 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1181                            void *arg, uint32_t evt)
1182 {
1183         return ndlp->nlp_state;
1184 }
1185
1186 static uint32_t
1187 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1188         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1189 {
1190         struct lpfc_hba *phba;
1191         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1192         MAILBOX_t *mb = &pmb->u.mb;
1193         uint16_t rpi;
1194
1195         phba = vport->phba;
1196         /* Release the RPI */
1197         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1198                 !mb->mbxStatus) {
1199                 rpi = pmb->u.mb.un.varWords[0];
1200                 lpfc_release_rpi(phba, vport, rpi);
1201         }
1202         return ndlp->nlp_state;
1203 }
1204
1205 static uint32_t
1206 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1207                            void *arg, uint32_t evt)
1208 {
1209         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1210
1211         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1212                 spin_lock_irq(shost->host_lock);
1213                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1214                 spin_unlock_irq(shost->host_lock);
1215                 return ndlp->nlp_state;
1216         } else {
1217                 /* software abort outstanding PLOGI */
1218                 lpfc_els_abort(vport->phba, ndlp);
1219
1220                 lpfc_drop_node(vport, ndlp);
1221                 return NLP_STE_FREED_NODE;
1222         }
1223 }
1224
1225 static uint32_t
1226 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1227                               struct lpfc_nodelist *ndlp,
1228                               void *arg,
1229                               uint32_t evt)
1230 {
1231         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1232         struct lpfc_hba  *phba = vport->phba;
1233
1234         /* Don't do anything that will mess up processing of the
1235          * previous RSCN.
1236          */
1237         if (vport->fc_flag & FC_RSCN_DEFERRED)
1238                 return ndlp->nlp_state;
1239
1240         /* software abort outstanding PLOGI */
1241         lpfc_els_abort(phba, ndlp);
1242
1243         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1244         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1245         spin_lock_irq(shost->host_lock);
1246         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1247         spin_unlock_irq(shost->host_lock);
1248
1249         return ndlp->nlp_state;
1250 }
1251
1252 static uint32_t
1253 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1254                            void *arg, uint32_t evt)
1255 {
1256         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1257         struct lpfc_hba   *phba = vport->phba;
1258         struct lpfc_iocbq *cmdiocb;
1259
1260         /* software abort outstanding ADISC */
1261         lpfc_els_abort(phba, ndlp);
1262
1263         cmdiocb = (struct lpfc_iocbq *) arg;
1264
1265         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1266                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1267                         spin_lock_irq(shost->host_lock);
1268                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1269                         spin_unlock_irq(shost->host_lock);
1270                         if (vport->num_disc_nodes)
1271                                 lpfc_more_adisc(vport);
1272                 }
1273                 return ndlp->nlp_state;
1274         }
1275         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1276         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1277         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1278
1279         return ndlp->nlp_state;
1280 }
1281
1282 static uint32_t
1283 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1284                           void *arg, uint32_t evt)
1285 {
1286         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1287
1288         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1289         return ndlp->nlp_state;
1290 }
1291
1292 static uint32_t
1293 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1294                           void *arg, uint32_t evt)
1295 {
1296         struct lpfc_hba *phba = vport->phba;
1297         struct lpfc_iocbq *cmdiocb;
1298
1299         cmdiocb = (struct lpfc_iocbq *) arg;
1300
1301         /* software abort outstanding ADISC */
1302         lpfc_els_abort(phba, ndlp);
1303
1304         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1305         return ndlp->nlp_state;
1306 }
1307
1308 static uint32_t
1309 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1310                             struct lpfc_nodelist *ndlp,
1311                             void *arg, uint32_t evt)
1312 {
1313         struct lpfc_iocbq *cmdiocb;
1314
1315         cmdiocb = (struct lpfc_iocbq *) arg;
1316
1317         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1318         return ndlp->nlp_state;
1319 }
1320
1321 static uint32_t
1322 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1323                           void *arg, uint32_t evt)
1324 {
1325         struct lpfc_iocbq *cmdiocb;
1326
1327         cmdiocb = (struct lpfc_iocbq *) arg;
1328
1329         /* Treat like rcv logo */
1330         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1331         return ndlp->nlp_state;
1332 }
1333
1334 static uint32_t
1335 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1336                             struct lpfc_nodelist *ndlp,
1337                             void *arg, uint32_t evt)
1338 {
1339         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1340         struct lpfc_hba   *phba = vport->phba;
1341         struct lpfc_iocbq *cmdiocb, *rspiocb;
1342         IOCB_t *irsp;
1343         ADISC *ap;
1344         int rc;
1345
1346         cmdiocb = (struct lpfc_iocbq *) arg;
1347         rspiocb = cmdiocb->context_un.rsp_iocb;
1348
1349         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1350         irsp = &rspiocb->iocb;
1351
1352         if ((irsp->ulpStatus) ||
1353             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1354                 /* 1 sec timeout */
1355                 mod_timer(&ndlp->nlp_delayfunc,
1356                           jiffies + msecs_to_jiffies(1000));
1357                 spin_lock_irq(shost->host_lock);
1358                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1359                 spin_unlock_irq(shost->host_lock);
1360                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1361
1362                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1363                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1364
1365                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1366                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1367                 lpfc_unreg_rpi(vport, ndlp);
1368                 return ndlp->nlp_state;
1369         }
1370
1371         if (phba->sli_rev == LPFC_SLI_REV4) {
1372                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1373                 if (rc) {
1374                         /* Stay in state and retry. */
1375                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1376                         return ndlp->nlp_state;
1377                 }
1378         }
1379
1380         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1381                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1382                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1383         } else {
1384                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1385                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1386         }
1387
1388         return ndlp->nlp_state;
1389 }
1390
1391 static uint32_t
1392 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1393                            void *arg, uint32_t evt)
1394 {
1395         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1396
1397         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1398                 spin_lock_irq(shost->host_lock);
1399                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1400                 spin_unlock_irq(shost->host_lock);
1401                 return ndlp->nlp_state;
1402         } else {
1403                 /* software abort outstanding ADISC */
1404                 lpfc_els_abort(vport->phba, ndlp);
1405
1406                 lpfc_drop_node(vport, ndlp);
1407                 return NLP_STE_FREED_NODE;
1408         }
1409 }
1410
1411 static uint32_t
1412 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1413                               struct lpfc_nodelist *ndlp,
1414                               void *arg,
1415                               uint32_t evt)
1416 {
1417         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1418         struct lpfc_hba  *phba = vport->phba;
1419
1420         /* Don't do anything that will mess up processing of the
1421          * previous RSCN.
1422          */
1423         if (vport->fc_flag & FC_RSCN_DEFERRED)
1424                 return ndlp->nlp_state;
1425
1426         /* software abort outstanding ADISC */
1427         lpfc_els_abort(phba, ndlp);
1428
1429         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1430         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1431         spin_lock_irq(shost->host_lock);
1432         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1433         spin_unlock_irq(shost->host_lock);
1434         lpfc_disc_set_adisc(vport, ndlp);
1435         return ndlp->nlp_state;
1436 }
1437
1438 static uint32_t
1439 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1440                               struct lpfc_nodelist *ndlp,
1441                               void *arg,
1442                               uint32_t evt)
1443 {
1444         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1445
1446         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1447         return ndlp->nlp_state;
1448 }
1449
1450 static uint32_t
1451 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1452                              struct lpfc_nodelist *ndlp,
1453                              void *arg,
1454                              uint32_t evt)
1455 {
1456         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1457
1458         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1459         return ndlp->nlp_state;
1460 }
1461
1462 static uint32_t
1463 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1464                              struct lpfc_nodelist *ndlp,
1465                              void *arg,
1466                              uint32_t evt)
1467 {
1468         struct lpfc_hba   *phba = vport->phba;
1469         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1470         LPFC_MBOXQ_t      *mb;
1471         LPFC_MBOXQ_t      *nextmb;
1472         struct lpfc_dmabuf *mp;
1473
1474         cmdiocb = (struct lpfc_iocbq *) arg;
1475
1476         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1477         if ((mb = phba->sli.mbox_active)) {
1478                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1479                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1480                         lpfc_nlp_put(ndlp);
1481                         mb->context2 = NULL;
1482                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1483                 }
1484         }
1485
1486         spin_lock_irq(&phba->hbalock);
1487         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1488                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1489                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1490                         mp = (struct lpfc_dmabuf *) (mb->context1);
1491                         if (mp) {
1492                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1493                                 kfree(mp);
1494                         }
1495                         lpfc_nlp_put(ndlp);
1496                         list_del(&mb->list);
1497                         phba->sli.mboxq_cnt--;
1498                         mempool_free(mb, phba->mbox_mem_pool);
1499                 }
1500         }
1501         spin_unlock_irq(&phba->hbalock);
1502
1503         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1504         return ndlp->nlp_state;
1505 }
1506
1507 static uint32_t
1508 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1509                                struct lpfc_nodelist *ndlp,
1510                                void *arg,
1511                                uint32_t evt)
1512 {
1513         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1514
1515         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1516         return ndlp->nlp_state;
1517 }
1518
1519 static uint32_t
1520 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1521                              struct lpfc_nodelist *ndlp,
1522                              void *arg,
1523                              uint32_t evt)
1524 {
1525         struct lpfc_iocbq *cmdiocb;
1526
1527         cmdiocb = (struct lpfc_iocbq *) arg;
1528         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1529         return ndlp->nlp_state;
1530 }
1531
1532 static uint32_t
1533 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1534                                   struct lpfc_nodelist *ndlp,
1535                                   void *arg,
1536                                   uint32_t evt)
1537 {
1538         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1539         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1540         MAILBOX_t *mb = &pmb->u.mb;
1541         uint32_t did  = mb->un.varWords[1];
1542
1543         if (mb->mbxStatus) {
1544                 /* RegLogin failed */
1545                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1546                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1547                                  "x%x\n",
1548                                  did, mb->mbxStatus, vport->port_state,
1549                                  mb->un.varRegLogin.vpi,
1550                                  mb->un.varRegLogin.rpi);
1551                 /*
1552                  * If RegLogin failed due to lack of HBA resources do not
1553                  * retry discovery.
1554                  */
1555                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1556                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1557                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1558                         return ndlp->nlp_state;
1559                 }
1560
1561                 /* Put ndlp in npr state set plogi timer for 1 sec */
1562                 mod_timer(&ndlp->nlp_delayfunc,
1563                           jiffies + msecs_to_jiffies(1000 * 1));
1564                 spin_lock_irq(shost->host_lock);
1565                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1566                 spin_unlock_irq(shost->host_lock);
1567                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1568
1569                 lpfc_issue_els_logo(vport, ndlp, 0);
1570                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1571                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1572                 return ndlp->nlp_state;
1573         }
1574
1575         /* SLI4 ports have preallocated logical rpis. */
1576         if (vport->phba->sli_rev < LPFC_SLI_REV4)
1577                 ndlp->nlp_rpi = mb->un.varWords[0];
1578
1579         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1580
1581         /* Only if we are not a fabric nport do we issue PRLI */
1582         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1583                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1584                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1585                 lpfc_issue_els_prli(vport, ndlp, 0);
1586         } else {
1587                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1588                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1589         }
1590         return ndlp->nlp_state;
1591 }
1592
1593 static uint32_t
1594 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1595                               struct lpfc_nodelist *ndlp,
1596                               void *arg,
1597                               uint32_t evt)
1598 {
1599         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1600
1601         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1602                 spin_lock_irq(shost->host_lock);
1603                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1604                 spin_unlock_irq(shost->host_lock);
1605                 return ndlp->nlp_state;
1606         } else {
1607                 lpfc_drop_node(vport, ndlp);
1608                 return NLP_STE_FREED_NODE;
1609         }
1610 }
1611
1612 static uint32_t
1613 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1614                                  struct lpfc_nodelist *ndlp,
1615                                  void *arg,
1616                                  uint32_t evt)
1617 {
1618         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1619
1620         /* Don't do anything that will mess up processing of the
1621          * previous RSCN.
1622          */
1623         if (vport->fc_flag & FC_RSCN_DEFERRED)
1624                 return ndlp->nlp_state;
1625
1626         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1627         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1628         spin_lock_irq(shost->host_lock);
1629         ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1630         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1631         spin_unlock_irq(shost->host_lock);
1632         lpfc_disc_set_adisc(vport, ndlp);
1633         return ndlp->nlp_state;
1634 }
1635
1636 static uint32_t
1637 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1638                           void *arg, uint32_t evt)
1639 {
1640         struct lpfc_iocbq *cmdiocb;
1641
1642         cmdiocb = (struct lpfc_iocbq *) arg;
1643
1644         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1645         return ndlp->nlp_state;
1646 }
1647
1648 static uint32_t
1649 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1650                          void *arg, uint32_t evt)
1651 {
1652         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1653
1654         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1655         return ndlp->nlp_state;
1656 }
1657
1658 static uint32_t
1659 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1660                          void *arg, uint32_t evt)
1661 {
1662         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1663
1664         /* Software abort outstanding PRLI before sending acc */
1665         lpfc_els_abort(vport->phba, ndlp);
1666
1667         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1668         return ndlp->nlp_state;
1669 }
1670
1671 static uint32_t
1672 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1673                            void *arg, uint32_t evt)
1674 {
1675         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1676
1677         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1678         return ndlp->nlp_state;
1679 }
1680
1681 /* This routine is envoked when we rcv a PRLO request from a nport
1682  * we are logged into.  We should send back a PRLO rsp setting the
1683  * appropriate bits.
1684  * NEXT STATE = PRLI_ISSUE
1685  */
1686 static uint32_t
1687 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1688                          void *arg, uint32_t evt)
1689 {
1690         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1691
1692         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1693         return ndlp->nlp_state;
1694 }
1695
1696 static uint32_t
1697 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1698                           void *arg, uint32_t evt)
1699 {
1700         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1701         struct lpfc_iocbq *cmdiocb, *rspiocb;
1702         struct lpfc_hba   *phba = vport->phba;
1703         IOCB_t *irsp;
1704         PRLI *npr;
1705
1706         cmdiocb = (struct lpfc_iocbq *) arg;
1707         rspiocb = cmdiocb->context_un.rsp_iocb;
1708         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1709
1710         irsp = &rspiocb->iocb;
1711         if (irsp->ulpStatus) {
1712                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1713                     vport->cfg_restrict_login) {
1714                         goto out;
1715                 }
1716                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1717                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1718                 return ndlp->nlp_state;
1719         }
1720
1721         /* Check out PRLI rsp */
1722         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1723         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1724         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1725         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1726             (npr->prliType == PRLI_FCP_TYPE)) {
1727                 if (npr->initiatorFunc)
1728                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1729                 if (npr->targetFunc) {
1730                         ndlp->nlp_type |= NLP_FCP_TARGET;
1731                         if (npr->writeXferRdyDis)
1732                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1733                 }
1734                 if (npr->Retry)
1735                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1736         }
1737         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1738             (vport->port_type == LPFC_NPIV_PORT) &&
1739              vport->cfg_restrict_login) {
1740 out:
1741                 spin_lock_irq(shost->host_lock);
1742                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1743                 spin_unlock_irq(shost->host_lock);
1744                 lpfc_issue_els_logo(vport, ndlp, 0);
1745
1746                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1747                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1748                 return ndlp->nlp_state;
1749         }
1750
1751         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1752         if (ndlp->nlp_type & NLP_FCP_TARGET)
1753                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1754         else
1755                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1756         return ndlp->nlp_state;
1757 }
1758
1759 /*! lpfc_device_rm_prli_issue
1760  *
1761  * \pre
1762  * \post
1763  * \param   phba
1764  * \param   ndlp
1765  * \param   arg
1766  * \param   evt
1767  * \return  uint32_t
1768  *
1769  * \b Description:
1770  *    This routine is envoked when we a request to remove a nport we are in the
1771  *    process of PRLIing. We should software abort outstanding prli, unreg
1772  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1773  *    on plogi list so it can be freed when LOGO completes.
1774  *
1775  */
1776
1777 static uint32_t
1778 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1779                           void *arg, uint32_t evt)
1780 {
1781         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1782
1783         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1784                 spin_lock_irq(shost->host_lock);
1785                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1786                 spin_unlock_irq(shost->host_lock);
1787                 return ndlp->nlp_state;
1788         } else {
1789                 /* software abort outstanding PLOGI */
1790                 lpfc_els_abort(vport->phba, ndlp);
1791
1792                 lpfc_drop_node(vport, ndlp);
1793                 return NLP_STE_FREED_NODE;
1794         }
1795 }
1796
1797
1798 /*! lpfc_device_recov_prli_issue
1799  *
1800  * \pre
1801  * \post
1802  * \param   phba
1803  * \param   ndlp
1804  * \param   arg
1805  * \param   evt
1806  * \return  uint32_t
1807  *
1808  * \b Description:
1809  *    The routine is envoked when the state of a device is unknown, like
1810  *    during a link down. We should remove the nodelist entry from the
1811  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1812  *    outstanding PRLI command, then free the node entry.
1813  */
1814 static uint32_t
1815 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1816                              struct lpfc_nodelist *ndlp,
1817                              void *arg,
1818                              uint32_t evt)
1819 {
1820         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1821         struct lpfc_hba  *phba = vport->phba;
1822
1823         /* Don't do anything that will mess up processing of the
1824          * previous RSCN.
1825          */
1826         if (vport->fc_flag & FC_RSCN_DEFERRED)
1827                 return ndlp->nlp_state;
1828
1829         /* software abort outstanding PRLI */
1830         lpfc_els_abort(phba, ndlp);
1831
1832         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1833         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1834         spin_lock_irq(shost->host_lock);
1835         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1836         spin_unlock_irq(shost->host_lock);
1837         lpfc_disc_set_adisc(vport, ndlp);
1838         return ndlp->nlp_state;
1839 }
1840
1841 static uint32_t
1842 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1843                           void *arg, uint32_t evt)
1844 {
1845         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1846         struct ls_rjt     stat;
1847
1848         memset(&stat, 0, sizeof(struct ls_rjt));
1849         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1850         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1851         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1852         return ndlp->nlp_state;
1853 }
1854
1855 static uint32_t
1856 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1857                          void *arg, uint32_t evt)
1858 {
1859         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1860         struct ls_rjt     stat;
1861
1862         memset(&stat, 0, sizeof(struct ls_rjt));
1863         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1864         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1865         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1866         return ndlp->nlp_state;
1867 }
1868
1869 static uint32_t
1870 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1871                          void *arg, uint32_t evt)
1872 {
1873         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1874         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1875
1876         spin_lock_irq(shost->host_lock);
1877         ndlp->nlp_flag |= NLP_LOGO_ACC;
1878         spin_unlock_irq(shost->host_lock);
1879         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1880         return ndlp->nlp_state;
1881 }
1882
1883 static uint32_t
1884 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1885                            void *arg, uint32_t evt)
1886 {
1887         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1888         struct ls_rjt     stat;
1889
1890         memset(&stat, 0, sizeof(struct ls_rjt));
1891         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1892         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1893         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1894         return ndlp->nlp_state;
1895 }
1896
1897 static uint32_t
1898 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1899                          void *arg, uint32_t evt)
1900 {
1901         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1902         struct ls_rjt     stat;
1903
1904         memset(&stat, 0, sizeof(struct ls_rjt));
1905         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1906         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1907         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1908         return ndlp->nlp_state;
1909 }
1910
1911 static uint32_t
1912 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1913                           void *arg, uint32_t evt)
1914 {
1915         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1916
1917         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1918         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1919         spin_lock_irq(shost->host_lock);
1920         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1921         spin_unlock_irq(shost->host_lock);
1922         lpfc_disc_set_adisc(vport, ndlp);
1923         return ndlp->nlp_state;
1924 }
1925
1926 static uint32_t
1927 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1928                           void *arg, uint32_t evt)
1929 {
1930         /*
1931          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
1932          * timed out and is calling for Device Remove.  In this case, the LOGO
1933          * must be allowed to complete in state LOGO_ISSUE so that the rpi
1934          * and other NLP flags are correctly cleaned up.
1935          */
1936         return ndlp->nlp_state;
1937 }
1938
1939 static uint32_t
1940 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1941                              struct lpfc_nodelist *ndlp,
1942                              void *arg, uint32_t evt)
1943 {
1944         /*
1945          * Device Recovery events have no meaning for a node with a LOGO
1946          * outstanding.  The LOGO has to complete first and handle the
1947          * node from that point.
1948          */
1949         return ndlp->nlp_state;
1950 }
1951
1952 static uint32_t
1953 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1954                           void *arg, uint32_t evt)
1955 {
1956         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1957
1958         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1959         return ndlp->nlp_state;
1960 }
1961
1962 static uint32_t
1963 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1964                          void *arg, uint32_t evt)
1965 {
1966         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1967
1968         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1969         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1970         return ndlp->nlp_state;
1971 }
1972
1973 static uint32_t
1974 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1975                          void *arg, uint32_t evt)
1976 {
1977         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1978
1979         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1980         return ndlp->nlp_state;
1981 }
1982
1983 static uint32_t
1984 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1985                            void *arg, uint32_t evt)
1986 {
1987         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1988
1989         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1990         return ndlp->nlp_state;
1991 }
1992
1993 static uint32_t
1994 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1995                          void *arg, uint32_t evt)
1996 {
1997         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1998
1999         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2000         return ndlp->nlp_state;
2001 }
2002
2003 static uint32_t
2004 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2005                              struct lpfc_nodelist *ndlp,
2006                              void *arg,
2007                              uint32_t evt)
2008 {
2009         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2010
2011         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2012         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2013         spin_lock_irq(shost->host_lock);
2014         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2015         spin_unlock_irq(shost->host_lock);
2016         lpfc_disc_set_adisc(vport, ndlp);
2017
2018         return ndlp->nlp_state;
2019 }
2020
2021 static uint32_t
2022 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2023                            void *arg, uint32_t evt)
2024 {
2025         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2026
2027         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2028         return ndlp->nlp_state;
2029 }
2030
2031 static uint32_t
2032 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2033                           void *arg, uint32_t evt)
2034 {
2035         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2036
2037         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2038         return ndlp->nlp_state;
2039 }
2040
2041 static uint32_t
2042 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2043                           void *arg, uint32_t evt)
2044 {
2045         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2046
2047         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2048         return ndlp->nlp_state;
2049 }
2050
2051 static uint32_t
2052 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2053                             struct lpfc_nodelist *ndlp,
2054                             void *arg, uint32_t evt)
2055 {
2056         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2057
2058         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2059         return ndlp->nlp_state;
2060 }
2061
2062 static uint32_t
2063 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2064                           void *arg, uint32_t evt)
2065 {
2066         struct lpfc_hba  *phba = vport->phba;
2067         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2068
2069         /* flush the target */
2070         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2071                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2072
2073         /* Treat like rcv logo */
2074         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2075         return ndlp->nlp_state;
2076 }
2077
2078 static uint32_t
2079 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2080                               struct lpfc_nodelist *ndlp,
2081                               void *arg,
2082                               uint32_t evt)
2083 {
2084         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2085
2086         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2087         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2088         spin_lock_irq(shost->host_lock);
2089         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2090         spin_unlock_irq(shost->host_lock);
2091         lpfc_disc_set_adisc(vport, ndlp);
2092         return ndlp->nlp_state;
2093 }
2094
2095 static uint32_t
2096 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2097                         void *arg, uint32_t evt)
2098 {
2099         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2100         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2101
2102         /* Ignore PLOGI if we have an outstanding LOGO */
2103         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2104                 return ndlp->nlp_state;
2105         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2106                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2107                 spin_lock_irq(shost->host_lock);
2108                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2109                 spin_unlock_irq(shost->host_lock);
2110         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2111                 /* send PLOGI immediately, move to PLOGI issue state */
2112                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2113                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2114                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2115                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2116                 }
2117         }
2118         return ndlp->nlp_state;
2119 }
2120
2121 static uint32_t
2122 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2123                        void *arg, uint32_t evt)
2124 {
2125         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2126         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2127         struct ls_rjt     stat;
2128
2129         memset(&stat, 0, sizeof (struct ls_rjt));
2130         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2131         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2132         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2133
2134         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2135                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2136                         spin_lock_irq(shost->host_lock);
2137                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2138                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2139                         spin_unlock_irq(shost->host_lock);
2140                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2141                         lpfc_issue_els_adisc(vport, ndlp, 0);
2142                 } else {
2143                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2144                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2145                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2146                 }
2147         }
2148         return ndlp->nlp_state;
2149 }
2150
2151 static uint32_t
2152 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2153                        void *arg, uint32_t evt)
2154 {
2155         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2156
2157         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2158         return ndlp->nlp_state;
2159 }
2160
2161 static uint32_t
2162 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2163                          void *arg, uint32_t evt)
2164 {
2165         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2166
2167         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2168         /*
2169          * Do not start discovery if discovery is about to start
2170          * or discovery in progress for this node. Starting discovery
2171          * here will affect the counting of discovery threads.
2172          */
2173         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2174             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2175                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2176                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2177                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2178                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2179                         lpfc_issue_els_adisc(vport, ndlp, 0);
2180                 } else {
2181                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2182                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2183                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2184                 }
2185         }
2186         return ndlp->nlp_state;
2187 }
2188
2189 static uint32_t
2190 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2191                        void *arg, uint32_t evt)
2192 {
2193         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2194         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2195
2196         spin_lock_irq(shost->host_lock);
2197         ndlp->nlp_flag |= NLP_LOGO_ACC;
2198         spin_unlock_irq(shost->host_lock);
2199
2200         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2201
2202         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2203                 mod_timer(&ndlp->nlp_delayfunc,
2204                           jiffies + msecs_to_jiffies(1000 * 1));
2205                 spin_lock_irq(shost->host_lock);
2206                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2207                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2208                 spin_unlock_irq(shost->host_lock);
2209                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2210         } else {
2211                 spin_lock_irq(shost->host_lock);
2212                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2213                 spin_unlock_irq(shost->host_lock);
2214         }
2215         return ndlp->nlp_state;
2216 }
2217
2218 static uint32_t
2219 lpfc_cmpl_plogi_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         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2225
2226         cmdiocb = (struct lpfc_iocbq *) arg;
2227         rspiocb = cmdiocb->context_un.rsp_iocb;
2228
2229         irsp = &rspiocb->iocb;
2230         if (irsp->ulpStatus) {
2231                 spin_lock_irq(shost->host_lock);
2232                 ndlp->nlp_flag |= NLP_DEFER_RM;
2233                 spin_unlock_irq(shost->host_lock);
2234                 return NLP_STE_FREED_NODE;
2235         }
2236         return ndlp->nlp_state;
2237 }
2238
2239 static uint32_t
2240 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2241                         void *arg, uint32_t evt)
2242 {
2243         struct lpfc_iocbq *cmdiocb, *rspiocb;
2244         IOCB_t *irsp;
2245
2246         cmdiocb = (struct lpfc_iocbq *) arg;
2247         rspiocb = cmdiocb->context_un.rsp_iocb;
2248
2249         irsp = &rspiocb->iocb;
2250         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2251                 lpfc_drop_node(vport, ndlp);
2252                 return NLP_STE_FREED_NODE;
2253         }
2254         return ndlp->nlp_state;
2255 }
2256
2257 static uint32_t
2258 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2259                         void *arg, uint32_t evt)
2260 {
2261         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2262
2263         /* For the fabric port just clear the fc flags. */
2264         if (ndlp->nlp_DID == Fabric_DID) {
2265                 spin_lock_irq(shost->host_lock);
2266                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2267                 spin_unlock_irq(shost->host_lock);
2268         }
2269         lpfc_unreg_rpi(vport, ndlp);
2270         return ndlp->nlp_state;
2271 }
2272
2273 static uint32_t
2274 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2275                          void *arg, uint32_t evt)
2276 {
2277         struct lpfc_iocbq *cmdiocb, *rspiocb;
2278         IOCB_t *irsp;
2279
2280         cmdiocb = (struct lpfc_iocbq *) arg;
2281         rspiocb = cmdiocb->context_un.rsp_iocb;
2282
2283         irsp = &rspiocb->iocb;
2284         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2285                 lpfc_drop_node(vport, ndlp);
2286                 return NLP_STE_FREED_NODE;
2287         }
2288         return ndlp->nlp_state;
2289 }
2290
2291 static uint32_t
2292 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2293                             struct lpfc_nodelist *ndlp,
2294                             void *arg, uint32_t evt)
2295 {
2296         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2297         MAILBOX_t    *mb = &pmb->u.mb;
2298
2299         if (!mb->mbxStatus) {
2300                 /* SLI4 ports have preallocated logical rpis. */
2301                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2302                         ndlp->nlp_rpi = mb->un.varWords[0];
2303                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2304         } else {
2305                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2306                         lpfc_drop_node(vport, ndlp);
2307                         return NLP_STE_FREED_NODE;
2308                 }
2309         }
2310         return ndlp->nlp_state;
2311 }
2312
2313 static uint32_t
2314 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2315                         void *arg, uint32_t evt)
2316 {
2317         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2318
2319         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2320                 spin_lock_irq(shost->host_lock);
2321                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2322                 spin_unlock_irq(shost->host_lock);
2323                 return ndlp->nlp_state;
2324         }
2325         lpfc_drop_node(vport, ndlp);
2326         return NLP_STE_FREED_NODE;
2327 }
2328
2329 static uint32_t
2330 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2331                            void *arg, uint32_t evt)
2332 {
2333         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2334
2335         /* Don't do anything that will mess up processing of the
2336          * previous RSCN.
2337          */
2338         if (vport->fc_flag & FC_RSCN_DEFERRED)
2339                 return ndlp->nlp_state;
2340
2341         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2342         spin_lock_irq(shost->host_lock);
2343         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2344         spin_unlock_irq(shost->host_lock);
2345         return ndlp->nlp_state;
2346 }
2347
2348
2349 /* This next section defines the NPort Discovery State Machine */
2350
2351 /* There are 4 different double linked lists nodelist entries can reside on.
2352  * The plogi list and adisc list are used when Link Up discovery or RSCN
2353  * processing is needed. Each list holds the nodes that we will send PLOGI
2354  * or ADISC on. These lists will keep track of what nodes will be effected
2355  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2356  * The unmapped_list will contain all nodes that we have successfully logged
2357  * into at the Fibre Channel level. The mapped_list will contain all nodes
2358  * that are mapped FCP targets.
2359  */
2360 /*
2361  * The bind list is a list of undiscovered (potentially non-existent) nodes
2362  * that we have saved binding information on. This information is used when
2363  * nodes transition from the unmapped to the mapped list.
2364  */
2365 /* For UNUSED_NODE state, the node has just been allocated .
2366  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2367  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2368  * and put on the unmapped list. For ADISC processing, the node is taken off
2369  * the ADISC list and placed on either the mapped or unmapped list (depending
2370  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2371  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2372  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2373  * node, the node is taken off the unmapped list. The binding list is checked
2374  * for a valid binding, or a binding is automatically assigned. If binding
2375  * assignment is unsuccessful, the node is left on the unmapped list. If
2376  * binding assignment is successful, the associated binding list entry (if
2377  * any) is removed, and the node is placed on the mapped list.
2378  */
2379 /*
2380  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2381  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2382  * expire, all effected nodes will receive a DEVICE_RM event.
2383  */
2384 /*
2385  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2386  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2387  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2388  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2389  * we will first process the ADISC list.  32 entries are processed initially and
2390  * ADISC is initited for each one.  Completions / Events for each node are
2391  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2392  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2393  * waiting, and the ADISC list count is identically 0, then we are done. For
2394  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2395  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2396  * list.  32 entries are processed initially and PLOGI is initited for each one.
2397  * Completions / Events for each node are funnelled thru the state machine.  As
2398  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2399  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2400  * indentically 0, then we are done. We have now completed discovery / RSCN
2401  * handling. Upon completion, ALL nodes should be on either the mapped or
2402  * unmapped lists.
2403  */
2404
2405 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2406      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2407         /* Action routine                  Event       Current State  */
2408         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2409         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2410         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2411         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2412         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2413         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2414         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2415         lpfc_disc_illegal,              /* CMPL_PRLI       */
2416         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2417         lpfc_disc_illegal,              /* CMPL_ADISC      */
2418         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2419         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2420         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2421
2422         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2423         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2424         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2425         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2426         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2427         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2428         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2429         lpfc_disc_illegal,              /* CMPL_PRLI       */
2430         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2431         lpfc_disc_illegal,              /* CMPL_ADISC      */
2432         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2433         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2434         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2435
2436         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2437         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2438         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2439         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2440         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2441         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2442         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2443         lpfc_disc_illegal,              /* CMPL_PRLI       */
2444         lpfc_disc_illegal,              /* CMPL_LOGO       */
2445         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2446         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2447         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2448         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2449
2450         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2451         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2452         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2453         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2454         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2455         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2456         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2457         lpfc_disc_illegal,              /* CMPL_PRLI       */
2458         lpfc_disc_illegal,              /* CMPL_LOGO       */
2459         lpfc_disc_illegal,              /* CMPL_ADISC      */
2460         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2461         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2462         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2463
2464         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2465         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2466         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2467         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2468         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2469         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2470         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2471         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2472         lpfc_disc_illegal,              /* CMPL_LOGO       */
2473         lpfc_disc_illegal,              /* CMPL_ADISC      */
2474         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2475         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2476         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2477
2478         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2479         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2480         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2481         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2482         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2483         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2484         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2485         lpfc_disc_illegal,              /* CMPL_PRLI       */
2486         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2487         lpfc_disc_illegal,              /* CMPL_ADISC      */
2488         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2489         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2490         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2491
2492         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2493         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2494         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2495         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2496         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2497         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2498         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2499         lpfc_disc_illegal,              /* CMPL_PRLI       */
2500         lpfc_disc_illegal,              /* CMPL_LOGO       */
2501         lpfc_disc_illegal,              /* CMPL_ADISC      */
2502         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2503         lpfc_disc_illegal,              /* DEVICE_RM       */
2504         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2505
2506         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2507         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2508         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2509         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2510         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2511         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2512         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2513         lpfc_disc_illegal,              /* CMPL_PRLI       */
2514         lpfc_disc_illegal,              /* CMPL_LOGO       */
2515         lpfc_disc_illegal,              /* CMPL_ADISC      */
2516         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2517         lpfc_disc_illegal,              /* DEVICE_RM       */
2518         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2519
2520         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2521         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2522         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2523         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2524         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2525         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2526         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2527         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2528         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2529         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2530         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2531         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2532         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2533 };
2534
2535 int
2536 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2537                         void *arg, uint32_t evt)
2538 {
2539         uint32_t cur_state, rc;
2540         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2541                          uint32_t);
2542         uint32_t got_ndlp = 0;
2543
2544         if (lpfc_nlp_get(ndlp))
2545                 got_ndlp = 1;
2546
2547         cur_state = ndlp->nlp_state;
2548
2549         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2550         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2551                          "0211 DSM in event x%x on NPort x%x in "
2552                          "state %d Data: x%x\n",
2553                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2554
2555         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2556                  "DSM in:          evt:%d ste:%d did:x%x",
2557                 evt, cur_state, ndlp->nlp_DID);
2558
2559         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2560         rc = (func) (vport, ndlp, arg, evt);
2561
2562         /* DSM out state <rc> on NPort <nlp_DID> */
2563         if (got_ndlp) {
2564                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2565                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2566                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2567
2568                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2569                         "DSM out:         ste:%d did:x%x flg:x%x",
2570                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2571                 /* Decrement the ndlp reference count held for this function */
2572                 lpfc_nlp_put(ndlp);
2573         } else {
2574                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2575                         "0213 DSM out state %d on NPort free\n", rc);
2576
2577                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2578                         "DSM out:         ste:%d did:x%x flg:x%x",
2579                         rc, 0, 0);
2580         }
2581
2582         return rc;
2583 }