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) 2004-2008 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <scsi/scsi.h>
  27 #include <scsi/scsi_device.h>
  28 #include <scsi/scsi_host.h>
  29 #include <scsi/scsi_transport_fc.h>
  30
  31 #include "lpfc_hw.h"
  32 #include "lpfc_sli.h"
  33 #include "lpfc_nl.h"
  34 #include "lpfc_disc.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_vport.h"
  40 #include "lpfc_debugfs.h"
  41
  42
  43 /* Called to verify a rcv'ed ADISC was intended for us. */
  44 static int
  45 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  46                  struct lpfc_name *nn, struct lpfc_name *pn)
  47 {
  48         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  49          * table entry for that node.
  50          */
  51         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  52                 return 0;
  53
  54         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  55                 return 0;
  56
  57         /* we match, return success */
  58         return 1;
  59 }
  60
  61 int
  62 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  63                  struct serv_parm * sp, uint32_t class)
  64 {
  65         volatile struct serv_parm *hsp = &vport->fc_sparam;
  66         uint16_t hsp_value, ssp_value = 0;
  67
  68         /*
  69          * The receive data field size and buffer-to-buffer receive data field
  70          * size entries are 16 bits but are represented as two 8-bit fields in
  71          * the driver data structure to account for rsvd bits and other control
  72          * bits.  Reconstruct and compare the fields as a 16-bit values before
  73          * correcting the byte values.
  74          */
  75         if (sp->cls1.classValid) {
  76                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  77                                 hsp->cls1.rcvDataSizeLsb;
  78                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  79                                 sp->cls1.rcvDataSizeLsb;
  80                 if (!ssp_value)
  81                         goto bad_service_param;
  82                 if (ssp_value > hsp_value) {
  83                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  84                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  85                 }
  86         } else if (class == CLASS1) {
  87                 goto bad_service_param;
  88         }
  89
  90         if (sp->cls2.classValid) {
  91                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  92                                 hsp->cls2.rcvDataSizeLsb;
  93                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  94                                 sp->cls2.rcvDataSizeLsb;
  95                 if (!ssp_value)
  96                         goto bad_service_param;
  97                 if (ssp_value > hsp_value) {
  98                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  99                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
 100                 }
 101         } else if (class == CLASS2) {
 102                 goto bad_service_param;
 103         }
 104
 105         if (sp->cls3.classValid) {
 106                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 107                                 hsp->cls3.rcvDataSizeLsb;
 108                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 109                                 sp->cls3.rcvDataSizeLsb;
 110                 if (!ssp_value)
 111                         goto bad_service_param;
 112                 if (ssp_value > hsp_value) {
 113                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 114                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 115                 }
 116         } else if (class == CLASS3) {
 117                 goto bad_service_param;
 118         }
 119
 120         /*
 121          * Preserve the upper four bits of the MSB from the PLOGI response.
 122          * These bits contain the Buffer-to-Buffer State Change Number
 123          * from the target and need to be passed to the FW.
 124          */
 125         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 126         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 127         if (ssp_value > hsp_value) {
 128                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 129                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 130                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 131         }
 132
 133         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 134         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 135         return 1;
 136 bad_service_param:
 137         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 138                          "0207 Device %x "
 139                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 140                          "invalid service parameters.  Ignoring device.\n",
 141                          ndlp->nlp_DID,
 142                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 143                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 144                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 145                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 146         return 0;
 147 }
 148
 149 static void *
 150 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 151                         struct lpfc_iocbq *rspiocb)
 152 {
 153         struct lpfc_dmabuf *pcmd, *prsp;
 154         uint32_t *lp;
 155         void     *ptr = NULL;
 156         IOCB_t   *irsp;
 157
 158         irsp = &rspiocb->iocb;
 159         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 160
 161         /* For lpfc_els_abort, context2 could be zero'ed to delay
 162          * freeing associated memory till after ABTS completes.
 163          */
 164         if (pcmd) {
 165                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 166                                        list);
 167                 if (prsp) {
 168                         lp = (uint32_t *) prsp->virt;
 169                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 170                 }
 171         } else {
 172                 /* Force ulpStatus error since we are returning NULL ptr */
 173                 if (!(irsp->ulpStatus)) {
 174                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 175                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 176                 }
 177                 ptr = NULL;
 178         }
 179         return ptr;
 180 }
 181
 182
 183 /*
 184  * Free resources / clean up outstanding I/Os
 185  * associated with a LPFC_NODELIST entry. This
 186  * routine effectively results in a "software abort".
 187  */
 188 int
 189 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 190 {
 191         LIST_HEAD(completions);
 192         struct lpfc_sli  *psli = &phba->sli;
 193         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 194         struct lpfc_iocbq *iocb, *next_iocb;
 195
 196         /* Abort outstanding I/O on NPort <nlp_DID> */
 197         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 198                          "0205 Abort outstanding I/O on NPort x%x "
 199                          "Data: x%x x%x x%x\n",
 200                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 201                          ndlp->nlp_rpi);
 202
 203         lpfc_fabric_abort_nport(ndlp);
 204
 205         /* First check the txq */
 206         spin_lock_irq(&phba->hbalock);
 207         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 208                 /* Check to see if iocb matches the nport we are looking for */
 209                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 210                         /* It matches, so deque and call compl with anp error */
 211                         list_move_tail(&iocb->list, &completions);
 212                         pring->txq_cnt--;
 213                 }
 214         }
 215
 216         /* Next check the txcmplq */
 217         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 218                 /* Check to see if iocb matches the nport we are looking for */
 219                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 220                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 221                 }
 222         }
 223         spin_unlock_irq(&phba->hbalock);
 224
 225         /* Cancel all the IOCBs from the completions list */
 226         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 227                               IOERR_SLI_ABORTED);
 228
 229         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 230         return 0;
 231 }
 232
 233 static int
 234 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 235                struct lpfc_iocbq *cmdiocb)
 236 {
 237         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 238         struct lpfc_hba    *phba = vport->phba;
 239         struct lpfc_dmabuf *pcmd;
 240         uint32_t *lp;
 241         IOCB_t *icmd;
 242         struct serv_parm *sp;
 243         LPFC_MBOXQ_t *mbox;
 244         struct ls_rjt stat;
 245         int rc;
 246
 247         memset(&stat, 0, sizeof (struct ls_rjt));
 248         if (vport->port_state <= LPFC_FLOGI) {
 249                 /* Before responding to PLOGI, check for pt2pt mode.
 250                  * If we are pt2pt, with an outstanding FLOGI, abort
 251                  * the FLOGI and resend it first.
 252                  */
 253                 if (vport->fc_flag & FC_PT2PT) {
 254                          lpfc_els_abort_flogi(phba);
 255                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 256                                 /* If the other side is supposed to initiate
 257                                  * the PLOGI anyway, just ACC it now and
 258                                  * move on with discovery.
 259                                  */
 260                                 phba->fc_edtov = FF_DEF_EDTOV;
 261                                 phba->fc_ratov = FF_DEF_RATOV;
 262                                 /* Start discovery - this should just do
 263                                    CLEAR_LA */
 264                                 lpfc_disc_start(vport);
 265                         } else
 266                                 lpfc_initial_flogi(vport);
 267                 } else {
 268                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 269                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 270                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 271                                             ndlp, NULL);
 272                         return 0;
 273                 }
 274         }
 275         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 276         lp = (uint32_t *) pcmd->virt;
 277         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 278         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 279                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 280                                  "0140 PLOGI Reject: invalid nname\n");
 281                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 282                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 283                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 284                         NULL);
 285                 return 0;
 286         }
 287         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 288                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 289                                  "0141 PLOGI Reject: invalid pname\n");
 290                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 291                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 292                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 293                         NULL);
 294                 return 0;
 295         }
 296         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
 297                 /* Reject this request because invalid parameters */
 298                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 299                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 300                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 301                         NULL);
 302                 return 0;
 303         }
 304         icmd = &cmdiocb->iocb;
 305
 306         /* PLOGI chkparm OK */
 307         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 308                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 309                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 310                          ndlp->nlp_rpi);
 311
 312         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 313                 ndlp->nlp_fcp_info |= CLASS2;
 314         else
 315                 ndlp->nlp_fcp_info |= CLASS3;
 316
 317         ndlp->nlp_class_sup = 0;
 318         if (sp->cls1.classValid)
 319                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 320         if (sp->cls2.classValid)
 321                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 322         if (sp->cls3.classValid)
 323                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 324         if (sp->cls4.classValid)
 325                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 326         ndlp->nlp_maxframe =
 327                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 328
 329         /* no need to reg_login if we are already in one of these states */
 330         switch (ndlp->nlp_state) {
 331         case  NLP_STE_NPR_NODE:
 332                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 333                         break;
 334         case  NLP_STE_REG_LOGIN_ISSUE:
 335         case  NLP_STE_PRLI_ISSUE:
 336         case  NLP_STE_UNMAPPED_NODE:
 337         case  NLP_STE_MAPPED_NODE:
 338                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 339                 return 1;
 340         }
 341
 342         if ((vport->fc_flag & FC_PT2PT) &&
 343             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 344                 /* rcv'ed PLOGI decides what our NPortId will be */
 345                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 346                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 347                 if (mbox == NULL)
 348                         goto out;
 349                 lpfc_config_link(phba, mbox);
 350                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 351                 mbox->vport = vport;
 352                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 353                 if (rc == MBX_NOT_FINISHED) {
 354                         mempool_free(mbox, phba->mbox_mem_pool);
 355                         goto out;
 356                 }
 357
 358                 lpfc_can_disctmo(vport);
 359         }
 360         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 361         if (!mbox)
 362                 goto out;
 363
 364         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 365                             (uint8_t *) sp, mbox, 0);
 366         if (rc) {
 367                 mempool_free(mbox, phba->mbox_mem_pool);
 368                 goto out;
 369         }
 370
 371         /* ACC PLOGI rsp command needs to execute first,
 372          * queue this mbox command to be processed later.
 373          */
 374         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 375         /*
 376          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 377          * command issued in lpfc_cmpl_els_acc().
 378          */
 379         mbox->vport = vport;
 380         spin_lock_irq(shost->host_lock);
 381         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 382         spin_unlock_irq(shost->host_lock);
 383
 384         /*
 385          * If there is an outstanding PLOGI issued, abort it before
 386          * sending ACC rsp for received PLOGI. If pending plogi
 387          * is not canceled here, the plogi will be rejected by
 388          * remote port and will be retried. On a configuration with
 389          * single discovery thread, this will cause a huge delay in
 390          * discovery. Also this will cause multiple state machines
 391          * running in parallel for this node.
 392          */
 393         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 394                 /* software abort outstanding PLOGI */
 395                 lpfc_els_abort(phba, ndlp);
 396         }
 397
 398         if ((vport->port_type == LPFC_NPIV_PORT &&
 399              vport->cfg_restrict_login)) {
 400
 401                 /* In order to preserve RPIs, we want to cleanup
 402                  * the default RPI the firmware created to rcv
 403                  * this ELS request. The only way to do this is
 404                  * to register, then unregister the RPI.
 405                  */
 406                 spin_lock_irq(shost->host_lock);
 407                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 408                 spin_unlock_irq(shost->host_lock);
 409                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 410                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 411                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 412                         ndlp, mbox);
 413                 return 1;
 414         }
 415         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 416         return 1;
 417 out:
 418         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 419         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 420         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 421         return 0;
 422 }
 423
 424 static int
 425 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 426                 struct lpfc_iocbq *cmdiocb)
 427 {
 428         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 429         struct lpfc_dmabuf *pcmd;
 430         struct serv_parm   *sp;
 431         struct lpfc_name   *pnn, *ppn;
 432         struct ls_rjt stat;
 433         ADISC *ap;
 434         IOCB_t *icmd;
 435         uint32_t *lp;
 436         uint32_t cmd;
 437
 438         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 439         lp = (uint32_t *) pcmd->virt;
 440
 441         cmd = *lp++;
 442         if (cmd == ELS_CMD_ADISC) {
 443                 ap = (ADISC *) lp;
 444                 pnn = (struct lpfc_name *) & ap->nodeName;
 445                 ppn = (struct lpfc_name *) & ap->portName;
 446         } else {
 447                 sp = (struct serv_parm *) lp;
 448                 pnn = (struct lpfc_name *) & sp->nodeName;
 449                 ppn = (struct lpfc_name *) & sp->portName;
 450         }
 451
 452         icmd = &cmdiocb->iocb;
 453         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 454                 if (cmd == ELS_CMD_ADISC) {
 455                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 456                 } else {
 457                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 458                                          NULL);
 459                 }
 460                 return 1;
 461         }
 462         /* Reject this request because invalid parameters */
 463         stat.un.b.lsRjtRsvd0 = 0;
 464         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 465         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 466         stat.un.b.vendorUnique = 0;
 467         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 468
 469         /* 1 sec timeout */
 470         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 471
 472         spin_lock_irq(shost->host_lock);
 473         ndlp->nlp_flag |= NLP_DELAY_TMO;
 474         spin_unlock_irq(shost->host_lock);
 475         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 476         ndlp->nlp_prev_state = ndlp->nlp_state;
 477         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 478         return 0;
 479 }
 480
 481 static int
 482 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 483               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 484 {
 485         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 486
 487         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 488         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 489          * PLOGIs during LOGO storms from a device.
 490          */
 491         spin_lock_irq(shost->host_lock);
 492         ndlp->nlp_flag |= NLP_LOGO_ACC;
 493         spin_unlock_irq(shost->host_lock);
 494         if (els_cmd == ELS_CMD_PRLO)
 495                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 496         else
 497                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 498
 499         if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 500              ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 501               !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 502             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 503                 /* Only try to re-login if this is NOT a Fabric Node */
 504                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 505                 spin_lock_irq(shost->host_lock);
 506                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 507                 spin_unlock_irq(shost->host_lock);
 508
 509                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 510         }
 511         ndlp->nlp_prev_state = ndlp->nlp_state;
 512         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 513
 514         spin_lock_irq(shost->host_lock);
 515         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 516         spin_unlock_irq(shost->host_lock);
 517         /* The driver has to wait until the ACC completes before it continues
 518          * processing the LOGO.  The action will resume in
 519          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 520          * unreg_login, the driver waits so the ACC does not get aborted.
 521          */
 522         return 0;
 523 }
 524
 525 static void
 526 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 527               struct lpfc_iocbq *cmdiocb)
 528 {
 529         struct lpfc_dmabuf *pcmd;
 530         uint32_t *lp;
 531         PRLI *npr;
 532         struct fc_rport *rport = ndlp->rport;
 533         u32 roles;
 534
 535         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 536         lp = (uint32_t *) pcmd->virt;
 537         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 538
 539         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 540         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 541         if (npr->prliType == PRLI_FCP_TYPE) {
 542                 if (npr->initiatorFunc)
 543                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 544                 if (npr->targetFunc)
 545                         ndlp->nlp_type |= NLP_FCP_TARGET;
 546                 if (npr->Retry)
 547                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 548         }
 549         if (rport) {
 550                 /* We need to update the rport role values */
 551                 roles = FC_RPORT_ROLE_UNKNOWN;
 552                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 553                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 554                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 555                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 556
 557                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 558                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 559                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 560
 561                 fc_remote_port_rolechg(rport, roles);
 562         }
 563 }
 564
 565 static uint32_t
 566 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 567 {
 568         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 569
 570         if (!ndlp->nlp_rpi) {
 571                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 572                 return 0;
 573         }
 574
 575         if (!(vport->fc_flag & FC_PT2PT)) {
 576                 /* Check config parameter use-adisc or FCP-2 */
 577                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 578                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 579                         spin_lock_irq(shost->host_lock);
 580                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 581                         spin_unlock_irq(shost->host_lock);
 582                         return 1;
 583                 }
 584         }
 585         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 586         lpfc_unreg_rpi(vport, ndlp);
 587         return 0;
 588 }
 589
 590 static uint32_t
 591 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 592                   void *arg, uint32_t evt)
 593 {
 594         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 595                          "0271 Illegal State Transition: node x%x "
 596                          "event x%x, state x%x Data: x%x x%x\n",
 597                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 598                          ndlp->nlp_flag);
 599         return ndlp->nlp_state;
 600 }
 601
 602 static uint32_t
 603 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 604                   void *arg, uint32_t evt)
 605 {
 606         /* This transition is only legal if we previously
 607          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 608          * working on the same NPortID, do nothing for this thread
 609          * to stop it.
 610          */
 611         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 612                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 613                          "0272 Illegal State Transition: node x%x "
 614                          "event x%x, state x%x Data: x%x x%x\n",
 615                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 616                          ndlp->nlp_flag);
 617         }
 618         return ndlp->nlp_state;
 619 }
 620
 621 /* Start of Discovery State Machine routines */
 622
 623 static uint32_t
 624 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 625                            void *arg, uint32_t evt)
 626 {
 627         struct lpfc_iocbq *cmdiocb;
 628
 629         cmdiocb = (struct lpfc_iocbq *) arg;
 630
 631         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 632                 return ndlp->nlp_state;
 633         }
 634         return NLP_STE_FREED_NODE;
 635 }
 636
 637 static uint32_t
 638 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 639                          void *arg, uint32_t evt)
 640 {
 641         lpfc_issue_els_logo(vport, ndlp, 0);
 642         return ndlp->nlp_state;
 643 }
 644
 645 static uint32_t
 646 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 647                           void *arg, uint32_t evt)
 648 {
 649         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 650         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 651
 652         spin_lock_irq(shost->host_lock);
 653         ndlp->nlp_flag |= NLP_LOGO_ACC;
 654         spin_unlock_irq(shost->host_lock);
 655         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 656
 657         return ndlp->nlp_state;
 658 }
 659
 660 static uint32_t
 661 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 662                            void *arg, uint32_t evt)
 663 {
 664         return NLP_STE_FREED_NODE;
 665 }
 666
 667 static uint32_t
 668 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 669                            void *arg, uint32_t evt)
 670 {
 671         return NLP_STE_FREED_NODE;
 672 }
 673
 674 static uint32_t
 675 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 676                            void *arg, uint32_t evt)
 677 {
 678         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 679         struct lpfc_hba   *phba = vport->phba;
 680         struct lpfc_iocbq *cmdiocb = arg;
 681         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 682         uint32_t *lp = (uint32_t *) pcmd->virt;
 683         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 684         struct ls_rjt stat;
 685         int port_cmp;
 686
 687         memset(&stat, 0, sizeof (struct ls_rjt));
 688
 689         /* For a PLOGI, we only accept if our portname is less
 690          * than the remote portname.
 691          */
 692         phba->fc_stat.elsLogiCol++;
 693         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 694                           sizeof(struct lpfc_name));
 695
 696         if (port_cmp >= 0) {
 697                 /* Reject this request because the remote node will accept
 698                    ours */
 699                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 700                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 701                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 702                         NULL);
 703         } else {
 704                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 705                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 706                     (vport->num_disc_nodes)) {
 707                         spin_lock_irq(shost->host_lock);
 708                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 709                         spin_unlock_irq(shost->host_lock);
 710                         /* Check if there are more PLOGIs to be sent */
 711                         lpfc_more_plogi(vport);
 712                         if (vport->num_disc_nodes == 0) {
 713                                 spin_lock_irq(shost->host_lock);
 714                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 715                                 spin_unlock_irq(shost->host_lock);
 716                                 lpfc_can_disctmo(vport);
 717                                 lpfc_end_rscn(vport);
 718                         }
 719                 }
 720         } /* If our portname was less */
 721
 722         return ndlp->nlp_state;
 723 }
 724
 725 static uint32_t
 726 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 727                           void *arg, uint32_t evt)
 728 {
 729         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 730         struct ls_rjt     stat;
 731
 732         memset(&stat, 0, sizeof (struct ls_rjt));
 733         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 734         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 735         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 736         return ndlp->nlp_state;
 737 }
 738
 739 static uint32_t
 740 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 741                           void *arg, uint32_t evt)
 742 {
 743         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 744
 745                                 /* software abort outstanding PLOGI */
 746         lpfc_els_abort(vport->phba, ndlp);
 747
 748         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 749         return ndlp->nlp_state;
 750 }
 751
 752 static uint32_t
 753 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 754                          void *arg, uint32_t evt)
 755 {
 756         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 757         struct lpfc_hba   *phba = vport->phba;
 758         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 759
 760         /* software abort outstanding PLOGI */
 761         lpfc_els_abort(phba, ndlp);
 762
 763         if (evt == NLP_EVT_RCV_LOGO) {
 764                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 765         } else {
 766                 lpfc_issue_els_logo(vport, ndlp, 0);
 767         }
 768
 769         /* Put ndlp in npr state set plogi timer for 1 sec */
 770         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 771         spin_lock_irq(shost->host_lock);
 772         ndlp->nlp_flag |= NLP_DELAY_TMO;
 773         spin_unlock_irq(shost->host_lock);
 774         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 775         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 776         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 777
 778         return ndlp->nlp_state;
 779 }
 780
 781 static uint32_t
 782 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 783                             struct lpfc_nodelist *ndlp,
 784                             void *arg,
 785                             uint32_t evt)
 786 {
 787         struct lpfc_hba    *phba = vport->phba;
 788         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 789         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 790         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 791         uint32_t *lp;
 792         IOCB_t *irsp;
 793         struct serv_parm *sp;
 794         LPFC_MBOXQ_t *mbox;
 795
 796         cmdiocb = (struct lpfc_iocbq *) arg;
 797         rspiocb = cmdiocb->context_un.rsp_iocb;
 798
 799         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 800                 /* Recovery from PLOGI collision logic */
 801                 return ndlp->nlp_state;
 802         }
 803
 804         irsp = &rspiocb->iocb;
 805
 806         if (irsp->ulpStatus)
 807                 goto out;
 808
 809         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 810
 811         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 812
 813         lp = (uint32_t *) prsp->virt;
 814         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 815
 816         /* Some switches have FDMI servers returning 0 for WWN */
 817         if ((ndlp->nlp_DID != FDMI_DID) &&
 818                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
 819                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
 820                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 821                                  "0142 PLOGI RSP: Invalid WWN.\n");
 822                 goto out;
 823         }
 824         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 825                 goto out;
 826         /* PLOGI chkparm OK */
 827         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 828                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 829                          ndlp->nlp_DID, ndlp->nlp_state,
 830                          ndlp->nlp_flag, ndlp->nlp_rpi);
 831         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 832                 ndlp->nlp_fcp_info |= CLASS2;
 833         else
 834                 ndlp->nlp_fcp_info |= CLASS3;
 835
 836         ndlp->nlp_class_sup = 0;
 837         if (sp->cls1.classValid)
 838                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 839         if (sp->cls2.classValid)
 840                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 841         if (sp->cls3.classValid)
 842                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 843         if (sp->cls4.classValid)
 844                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 845         ndlp->nlp_maxframe =
 846                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 847
 848         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 849         if (!mbox) {
 850                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 851                         "0133 PLOGI: no memory for reg_login "
 852                         "Data: x%x x%x x%x x%x\n",
 853                         ndlp->nlp_DID, ndlp->nlp_state,
 854                         ndlp->nlp_flag, ndlp->nlp_rpi);
 855                 goto out;
 856         }
 857
 858         lpfc_unreg_rpi(vport, ndlp);
 859
 860         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 861                            (uint8_t *) sp, mbox, 0) == 0) {
 862                 switch (ndlp->nlp_DID) {
 863                 case NameServer_DID:
 864                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 865                         break;
 866                 case FDMI_DID:
 867                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 868                         break;
 869                 default:
 870                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 871                 }
 872                 mbox->context2 = lpfc_nlp_get(ndlp);
 873                 mbox->vport = vport;
 874                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 875                     != MBX_NOT_FINISHED) {
 876                         lpfc_nlp_set_state(vport, ndlp,
 877                                            NLP_STE_REG_LOGIN_ISSUE);
 878                         return ndlp->nlp_state;
 879                 }
 880                 /* decrement node reference count to the failed mbox
 881                  * command
 882                  */
 883                 lpfc_nlp_put(ndlp);
 884                 mp = (struct lpfc_dmabuf *) mbox->context1;
 885                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 886                 kfree(mp);
 887                 mempool_free(mbox, phba->mbox_mem_pool);
 888
 889                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 890                                  "0134 PLOGI: cannot issue reg_login "
 891                                  "Data: x%x x%x x%x x%x\n",
 892                                  ndlp->nlp_DID, ndlp->nlp_state,
 893                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 894         } else {
 895                 mempool_free(mbox, phba->mbox_mem_pool);
 896
 897                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 898                                  "0135 PLOGI: cannot format reg_login "
 899                                  "Data: x%x x%x x%x x%x\n",
 900                                  ndlp->nlp_DID, ndlp->nlp_state,
 901                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 902         }
 903
 904
 905 out:
 906         if (ndlp->nlp_DID == NameServer_DID) {
 907                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 908                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 909                                  "0261 Cannot Register NameServer login\n");
 910         }
 911
 912         spin_lock_irq(shost->host_lock);
 913         ndlp->nlp_flag |= NLP_DEFER_RM;
 914         spin_unlock_irq(shost->host_lock);
 915         return NLP_STE_FREED_NODE;
 916 }
 917
 918 static uint32_t
 919 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 920                            void *arg, uint32_t evt)
 921 {
 922         return ndlp->nlp_state;
 923 }
 924
 925 static uint32_t
 926 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
 927         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
 928 {
 929         return ndlp->nlp_state;
 930 }
 931
 932 static uint32_t
 933 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 934                            void *arg, uint32_t evt)
 935 {
 936         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 937
 938         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 939                 spin_lock_irq(shost->host_lock);
 940                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 941                 spin_unlock_irq(shost->host_lock);
 942                 return ndlp->nlp_state;
 943         } else {
 944                 /* software abort outstanding PLOGI */
 945                 lpfc_els_abort(vport->phba, ndlp);
 946
 947                 lpfc_drop_node(vport, ndlp);
 948                 return NLP_STE_FREED_NODE;
 949         }
 950 }
 951
 952 static uint32_t
 953 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 954                               struct lpfc_nodelist *ndlp,
 955                               void *arg,
 956                               uint32_t evt)
 957 {
 958         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 959         struct lpfc_hba  *phba = vport->phba;
 960
 961         /* Don't do anything that will mess up processing of the
 962          * previous RSCN.
 963          */
 964         if (vport->fc_flag & FC_RSCN_DEFERRED)
 965                 return ndlp->nlp_state;
 966
 967         /* software abort outstanding PLOGI */
 968         lpfc_els_abort(phba, ndlp);
 969
 970         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 971         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 972         spin_lock_irq(shost->host_lock);
 973         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 974         spin_unlock_irq(shost->host_lock);
 975
 976         return ndlp->nlp_state;
 977 }
 978
 979 static uint32_t
 980 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 981                            void *arg, uint32_t evt)
 982 {
 983         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 984         struct lpfc_hba   *phba = vport->phba;
 985         struct lpfc_iocbq *cmdiocb;
 986
 987         /* software abort outstanding ADISC */
 988         lpfc_els_abort(phba, ndlp);
 989
 990         cmdiocb = (struct lpfc_iocbq *) arg;
 991
 992         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 993                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 994                         spin_lock_irq(shost->host_lock);
 995                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 996                         spin_unlock_irq(shost->host_lock);
 997                         if (vport->num_disc_nodes)
 998                                 lpfc_more_adisc(vport);
 999                 }
1000                 return ndlp->nlp_state;
1001         }
1002         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1003         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1004         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1005
1006         return ndlp->nlp_state;
1007 }
1008
1009 static uint32_t
1010 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1011                           void *arg, uint32_t evt)
1012 {
1013         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1014
1015         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1016         return ndlp->nlp_state;
1017 }
1018
1019 static uint32_t
1020 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1021                           void *arg, uint32_t evt)
1022 {
1023         struct lpfc_hba *phba = vport->phba;
1024         struct lpfc_iocbq *cmdiocb;
1025
1026         cmdiocb = (struct lpfc_iocbq *) arg;
1027
1028         /* software abort outstanding ADISC */
1029         lpfc_els_abort(phba, ndlp);
1030
1031         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1032         return ndlp->nlp_state;
1033 }
1034
1035 static uint32_t
1036 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1037                             struct lpfc_nodelist *ndlp,
1038                             void *arg, uint32_t evt)
1039 {
1040         struct lpfc_iocbq *cmdiocb;
1041
1042         cmdiocb = (struct lpfc_iocbq *) arg;
1043
1044         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1045         return ndlp->nlp_state;
1046 }
1047
1048 static uint32_t
1049 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1050                           void *arg, uint32_t evt)
1051 {
1052         struct lpfc_iocbq *cmdiocb;
1053
1054         cmdiocb = (struct lpfc_iocbq *) arg;
1055
1056         /* Treat like rcv logo */
1057         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1058         return ndlp->nlp_state;
1059 }
1060
1061 static uint32_t
1062 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1063                             struct lpfc_nodelist *ndlp,
1064                             void *arg, uint32_t evt)
1065 {
1066         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1067         struct lpfc_hba   *phba = vport->phba;
1068         struct lpfc_iocbq *cmdiocb, *rspiocb;
1069         IOCB_t *irsp;
1070         ADISC *ap;
1071
1072         cmdiocb = (struct lpfc_iocbq *) arg;
1073         rspiocb = cmdiocb->context_un.rsp_iocb;
1074
1075         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1076         irsp = &rspiocb->iocb;
1077
1078         if ((irsp->ulpStatus) ||
1079             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1080                 /* 1 sec timeout */
1081                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1082                 spin_lock_irq(shost->host_lock);
1083                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1084                 spin_unlock_irq(shost->host_lock);
1085                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1086
1087                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1088                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1089
1090                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1091                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1092                 lpfc_unreg_rpi(vport, ndlp);
1093                 return ndlp->nlp_state;
1094         }
1095
1096         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1097                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1098                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1099         } else {
1100                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1101                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1102         }
1103         return ndlp->nlp_state;
1104 }
1105
1106 static uint32_t
1107 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1108                            void *arg, uint32_t evt)
1109 {
1110         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1111
1112         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1113                 spin_lock_irq(shost->host_lock);
1114                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1115                 spin_unlock_irq(shost->host_lock);
1116                 return ndlp->nlp_state;
1117         } else {
1118                 /* software abort outstanding ADISC */
1119                 lpfc_els_abort(vport->phba, ndlp);
1120
1121                 lpfc_drop_node(vport, ndlp);
1122                 return NLP_STE_FREED_NODE;
1123         }
1124 }
1125
1126 static uint32_t
1127 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1128                               struct lpfc_nodelist *ndlp,
1129                               void *arg,
1130                               uint32_t evt)
1131 {
1132         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1133         struct lpfc_hba  *phba = vport->phba;
1134
1135         /* Don't do anything that will mess up processing of the
1136          * previous RSCN.
1137          */
1138         if (vport->fc_flag & FC_RSCN_DEFERRED)
1139                 return ndlp->nlp_state;
1140
1141         /* software abort outstanding ADISC */
1142         lpfc_els_abort(phba, ndlp);
1143
1144         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1145         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1146         spin_lock_irq(shost->host_lock);
1147         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1148         spin_unlock_irq(shost->host_lock);
1149         lpfc_disc_set_adisc(vport, ndlp);
1150         return ndlp->nlp_state;
1151 }
1152
1153 static uint32_t
1154 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1155                               struct lpfc_nodelist *ndlp,
1156                               void *arg,
1157                               uint32_t evt)
1158 {
1159         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1160
1161         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1162         return ndlp->nlp_state;
1163 }
1164
1165 static uint32_t
1166 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1167                              struct lpfc_nodelist *ndlp,
1168                              void *arg,
1169                              uint32_t evt)
1170 {
1171         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1172
1173         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1174         return ndlp->nlp_state;
1175 }
1176
1177 static uint32_t
1178 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1179                              struct lpfc_nodelist *ndlp,
1180                              void *arg,
1181                              uint32_t evt)
1182 {
1183         struct lpfc_hba   *phba = vport->phba;
1184         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1185         LPFC_MBOXQ_t      *mb;
1186         LPFC_MBOXQ_t      *nextmb;
1187         struct lpfc_dmabuf *mp;
1188
1189         cmdiocb = (struct lpfc_iocbq *) arg;
1190
1191         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1192         if ((mb = phba->sli.mbox_active)) {
1193                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1194                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1195                         lpfc_nlp_put(ndlp);
1196                         mb->context2 = NULL;
1197                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1198                 }
1199         }
1200
1201         spin_lock_irq(&phba->hbalock);
1202         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1203                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1204                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1205                         mp = (struct lpfc_dmabuf *) (mb->context1);
1206                         if (mp) {
1207                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1208                                 kfree(mp);
1209                         }
1210                         lpfc_nlp_put(ndlp);
1211                         list_del(&mb->list);
1212                         mempool_free(mb, phba->mbox_mem_pool);
1213                 }
1214         }
1215         spin_unlock_irq(&phba->hbalock);
1216
1217         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1218         return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1223                                struct lpfc_nodelist *ndlp,
1224                                void *arg,
1225                                uint32_t evt)
1226 {
1227         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1228
1229         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1230         return ndlp->nlp_state;
1231 }
1232
1233 static uint32_t
1234 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1235                              struct lpfc_nodelist *ndlp,
1236                              void *arg,
1237                              uint32_t evt)
1238 {
1239         struct lpfc_iocbq *cmdiocb;
1240
1241         cmdiocb = (struct lpfc_iocbq *) arg;
1242         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1243         return ndlp->nlp_state;
1244 }
1245
1246 static uint32_t
1247 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1248                                   struct lpfc_nodelist *ndlp,
1249                                   void *arg,
1250                                   uint32_t evt)
1251 {
1252         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1253         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1254         MAILBOX_t *mb = &pmb->mb;
1255         uint32_t did  = mb->un.varWords[1];
1256
1257         if (mb->mbxStatus) {
1258                 /* RegLogin failed */
1259                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1260                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1261                                 did, mb->mbxStatus, vport->port_state);
1262                 /*
1263                  * If RegLogin failed due to lack of HBA resources do not
1264                  * retry discovery.
1265                  */
1266                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1267                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1268                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1269                         return ndlp->nlp_state;
1270                 }
1271
1272                 /* Put ndlp in npr state set plogi timer for 1 sec */
1273                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1274                 spin_lock_irq(shost->host_lock);
1275                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1276                 spin_unlock_irq(shost->host_lock);
1277                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1278
1279                 lpfc_issue_els_logo(vport, ndlp, 0);
1280                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1281                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1282                 return ndlp->nlp_state;
1283         }
1284
1285         ndlp->nlp_rpi = mb->un.varWords[0];
1286
1287         /* Only if we are not a fabric nport do we issue PRLI */
1288         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1289                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1290                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1291                 lpfc_issue_els_prli(vport, ndlp, 0);
1292         } else {
1293                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1294                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1295         }
1296         return ndlp->nlp_state;
1297 }
1298
1299 static uint32_t
1300 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1301                               struct lpfc_nodelist *ndlp,
1302                               void *arg,
1303                               uint32_t evt)
1304 {
1305         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1306
1307         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1308                 spin_lock_irq(shost->host_lock);
1309                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1310                 spin_unlock_irq(shost->host_lock);
1311                 return ndlp->nlp_state;
1312         } else {
1313                 lpfc_drop_node(vport, ndlp);
1314                 return NLP_STE_FREED_NODE;
1315         }
1316 }
1317
1318 static uint32_t
1319 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1320                                  struct lpfc_nodelist *ndlp,
1321                                  void *arg,
1322                                  uint32_t evt)
1323 {
1324         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1325
1326         /* Don't do anything that will mess up processing of the
1327          * previous RSCN.
1328          */
1329         if (vport->fc_flag & FC_RSCN_DEFERRED)
1330                 return ndlp->nlp_state;
1331
1332         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1333         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1334         spin_lock_irq(shost->host_lock);
1335         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1336         spin_unlock_irq(shost->host_lock);
1337         lpfc_disc_set_adisc(vport, ndlp);
1338         return ndlp->nlp_state;
1339 }
1340
1341 static uint32_t
1342 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1343                           void *arg, uint32_t evt)
1344 {
1345         struct lpfc_iocbq *cmdiocb;
1346
1347         cmdiocb = (struct lpfc_iocbq *) arg;
1348
1349         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1350         return ndlp->nlp_state;
1351 }
1352
1353 static uint32_t
1354 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1355                          void *arg, uint32_t evt)
1356 {
1357         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1358
1359         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1360         return ndlp->nlp_state;
1361 }
1362
1363 static uint32_t
1364 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1365                          void *arg, uint32_t evt)
1366 {
1367         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1368
1369         /* Software abort outstanding PRLI before sending acc */
1370         lpfc_els_abort(vport->phba, ndlp);
1371
1372         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1373         return ndlp->nlp_state;
1374 }
1375
1376 static uint32_t
1377 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1378                            void *arg, uint32_t evt)
1379 {
1380         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1381
1382         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1383         return ndlp->nlp_state;
1384 }
1385
1386 /* This routine is envoked when we rcv a PRLO request from a nport
1387  * we are logged into.  We should send back a PRLO rsp setting the
1388  * appropriate bits.
1389  * NEXT STATE = PRLI_ISSUE
1390  */
1391 static uint32_t
1392 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1393                          void *arg, uint32_t evt)
1394 {
1395         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1396
1397         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1398         return ndlp->nlp_state;
1399 }
1400
1401 static uint32_t
1402 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1403                           void *arg, uint32_t evt)
1404 {
1405         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1406         struct lpfc_iocbq *cmdiocb, *rspiocb;
1407         struct lpfc_hba   *phba = vport->phba;
1408         IOCB_t *irsp;
1409         PRLI *npr;
1410
1411         cmdiocb = (struct lpfc_iocbq *) arg;
1412         rspiocb = cmdiocb->context_un.rsp_iocb;
1413         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1414
1415         irsp = &rspiocb->iocb;
1416         if (irsp->ulpStatus) {
1417                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1418                     vport->cfg_restrict_login) {
1419                         goto out;
1420                 }
1421                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1422                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1423                 return ndlp->nlp_state;
1424         }
1425
1426         /* Check out PRLI rsp */
1427         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1428         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1429         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1430             (npr->prliType == PRLI_FCP_TYPE)) {
1431                 if (npr->initiatorFunc)
1432                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1433                 if (npr->targetFunc)
1434                         ndlp->nlp_type |= NLP_FCP_TARGET;
1435                 if (npr->Retry)
1436                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1437         }
1438         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1439             (vport->port_type == LPFC_NPIV_PORT) &&
1440              vport->cfg_restrict_login) {
1441 out:
1442                 spin_lock_irq(shost->host_lock);
1443                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1444                 spin_unlock_irq(shost->host_lock);
1445                 lpfc_issue_els_logo(vport, ndlp, 0);
1446
1447                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1448                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1449                 return ndlp->nlp_state;
1450         }
1451
1452         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1453         if (ndlp->nlp_type & NLP_FCP_TARGET)
1454                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1455         else
1456                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1457         return ndlp->nlp_state;
1458 }
1459
1460 /*! lpfc_device_rm_prli_issue
1461  *
1462  * \pre
1463  * \post
1464  * \param   phba
1465  * \param   ndlp
1466  * \param   arg
1467  * \param   evt
1468  * \return  uint32_t
1469  *
1470  * \b Description:
1471  *    This routine is envoked when we a request to remove a nport we are in the
1472  *    process of PRLIing. We should software abort outstanding prli, unreg
1473  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1474  *    on plogi list so it can be freed when LOGO completes.
1475  *
1476  */
1477
1478 static uint32_t
1479 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1480                           void *arg, uint32_t evt)
1481 {
1482         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1483
1484         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1485                 spin_lock_irq(shost->host_lock);
1486                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1487                 spin_unlock_irq(shost->host_lock);
1488                 return ndlp->nlp_state;
1489         } else {
1490                 /* software abort outstanding PLOGI */
1491                 lpfc_els_abort(vport->phba, ndlp);
1492
1493                 lpfc_drop_node(vport, ndlp);
1494                 return NLP_STE_FREED_NODE;
1495         }
1496 }
1497
1498
1499 /*! lpfc_device_recov_prli_issue
1500  *
1501  * \pre
1502  * \post
1503  * \param   phba
1504  * \param   ndlp
1505  * \param   arg
1506  * \param   evt
1507  * \return  uint32_t
1508  *
1509  * \b Description:
1510  *    The routine is envoked when the state of a device is unknown, like
1511  *    during a link down. We should remove the nodelist entry from the
1512  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1513  *    outstanding PRLI command, then free the node entry.
1514  */
1515 static uint32_t
1516 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1517                              struct lpfc_nodelist *ndlp,
1518                              void *arg,
1519                              uint32_t evt)
1520 {
1521         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1522         struct lpfc_hba  *phba = vport->phba;
1523
1524         /* Don't do anything that will mess up processing of the
1525          * previous RSCN.
1526          */
1527         if (vport->fc_flag & FC_RSCN_DEFERRED)
1528                 return ndlp->nlp_state;
1529
1530         /* software abort outstanding PRLI */
1531         lpfc_els_abort(phba, ndlp);
1532
1533         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1534         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1535         spin_lock_irq(shost->host_lock);
1536         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1537         spin_unlock_irq(shost->host_lock);
1538         lpfc_disc_set_adisc(vport, ndlp);
1539         return ndlp->nlp_state;
1540 }
1541
1542 static uint32_t
1543 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1544                           void *arg, uint32_t evt)
1545 {
1546         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1547
1548         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1549         return ndlp->nlp_state;
1550 }
1551
1552 static uint32_t
1553 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1554                          void *arg, uint32_t evt)
1555 {
1556         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1557
1558         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1559         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1560         return ndlp->nlp_state;
1561 }
1562
1563 static uint32_t
1564 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1565                          void *arg, uint32_t evt)
1566 {
1567         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1568
1569         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1570         return ndlp->nlp_state;
1571 }
1572
1573 static uint32_t
1574 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1575                            void *arg, uint32_t evt)
1576 {
1577         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1578
1579         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1580         return ndlp->nlp_state;
1581 }
1582
1583 static uint32_t
1584 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1585                          void *arg, uint32_t evt)
1586 {
1587         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1588
1589         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1590         return ndlp->nlp_state;
1591 }
1592
1593 static uint32_t
1594 lpfc_device_recov_unmap_node(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         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1602         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1603         spin_lock_irq(shost->host_lock);
1604         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1605         spin_unlock_irq(shost->host_lock);
1606         lpfc_disc_set_adisc(vport, ndlp);
1607
1608         return ndlp->nlp_state;
1609 }
1610
1611 static uint32_t
1612 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1613                            void *arg, uint32_t evt)
1614 {
1615         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1616
1617         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1618         return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1623                           void *arg, uint32_t evt)
1624 {
1625         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1626
1627         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1628         return ndlp->nlp_state;
1629 }
1630
1631 static uint32_t
1632 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1633                           void *arg, uint32_t evt)
1634 {
1635         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1636
1637         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1638         return ndlp->nlp_state;
1639 }
1640
1641 static uint32_t
1642 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1643                             struct lpfc_nodelist *ndlp,
1644                             void *arg, uint32_t evt)
1645 {
1646         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1647
1648         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1649         return ndlp->nlp_state;
1650 }
1651
1652 static uint32_t
1653 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1654                           void *arg, uint32_t evt)
1655 {
1656         struct lpfc_hba  *phba = vport->phba;
1657         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1658
1659         /* flush the target */
1660         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1661                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1662
1663         /* Treat like rcv logo */
1664         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1665         return ndlp->nlp_state;
1666 }
1667
1668 static uint32_t
1669 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1670                               struct lpfc_nodelist *ndlp,
1671                               void *arg,
1672                               uint32_t evt)
1673 {
1674         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1675
1676         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1677         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1678         spin_lock_irq(shost->host_lock);
1679         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1680         spin_unlock_irq(shost->host_lock);
1681         lpfc_disc_set_adisc(vport, ndlp);
1682         return ndlp->nlp_state;
1683 }
1684
1685 static uint32_t
1686 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1687                         void *arg, uint32_t evt)
1688 {
1689         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1690         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1691
1692         /* Ignore PLOGI if we have an outstanding LOGO */
1693         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1694                 return ndlp->nlp_state;
1695         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1696                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1697                 spin_lock_irq(shost->host_lock);
1698                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1699                 spin_unlock_irq(shost->host_lock);
1700         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1701                 /* send PLOGI immediately, move to PLOGI issue state */
1702                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1703                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1704                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1705                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1706                 }
1707         }
1708         return ndlp->nlp_state;
1709 }
1710
1711 static uint32_t
1712 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1713                        void *arg, uint32_t evt)
1714 {
1715         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1716         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1717         struct ls_rjt     stat;
1718
1719         memset(&stat, 0, sizeof (struct ls_rjt));
1720         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1721         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1722         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1723
1724         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1725                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1726                         spin_lock_irq(shost->host_lock);
1727                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1728                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1729                         spin_unlock_irq(shost->host_lock);
1730                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1731                         lpfc_issue_els_adisc(vport, ndlp, 0);
1732                 } else {
1733                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1734                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1735                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1736                 }
1737         }
1738         return ndlp->nlp_state;
1739 }
1740
1741 static uint32_t
1742 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1743                        void *arg, uint32_t evt)
1744 {
1745         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1746
1747         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1748         return ndlp->nlp_state;
1749 }
1750
1751 static uint32_t
1752 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1753                          void *arg, uint32_t evt)
1754 {
1755         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1756
1757         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1758         /*
1759          * Do not start discovery if discovery is about to start
1760          * or discovery in progress for this node. Starting discovery
1761          * here will affect the counting of discovery threads.
1762          */
1763         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1764             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1765                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1766                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1767                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1768                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1769                         lpfc_issue_els_adisc(vport, ndlp, 0);
1770                 } else {
1771                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1772                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1773                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1774                 }
1775         }
1776         return ndlp->nlp_state;
1777 }
1778
1779 static uint32_t
1780 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1781                        void *arg, uint32_t evt)
1782 {
1783         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1784         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1785
1786         spin_lock_irq(shost->host_lock);
1787         ndlp->nlp_flag |= NLP_LOGO_ACC;
1788         spin_unlock_irq(shost->host_lock);
1789
1790         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1791
1792         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1793                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1794                 spin_lock_irq(shost->host_lock);
1795                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1796                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1797                 spin_unlock_irq(shost->host_lock);
1798                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1799         } else {
1800                 spin_lock_irq(shost->host_lock);
1801                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1802                 spin_unlock_irq(shost->host_lock);
1803         }
1804         return ndlp->nlp_state;
1805 }
1806
1807 static uint32_t
1808 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1809                          void *arg, uint32_t evt)
1810 {
1811         struct lpfc_iocbq *cmdiocb, *rspiocb;
1812         IOCB_t *irsp;
1813
1814         cmdiocb = (struct lpfc_iocbq *) arg;
1815         rspiocb = cmdiocb->context_un.rsp_iocb;
1816
1817         irsp = &rspiocb->iocb;
1818         if (irsp->ulpStatus) {
1819                 ndlp->nlp_flag |= NLP_DEFER_RM;
1820                 return NLP_STE_FREED_NODE;
1821         }
1822         return ndlp->nlp_state;
1823 }
1824
1825 static uint32_t
1826 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1827                         void *arg, uint32_t evt)
1828 {
1829         struct lpfc_iocbq *cmdiocb, *rspiocb;
1830         IOCB_t *irsp;
1831
1832         cmdiocb = (struct lpfc_iocbq *) arg;
1833         rspiocb = cmdiocb->context_un.rsp_iocb;
1834
1835         irsp = &rspiocb->iocb;
1836         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1837                 lpfc_drop_node(vport, ndlp);
1838                 return NLP_STE_FREED_NODE;
1839         }
1840         return ndlp->nlp_state;
1841 }
1842
1843 static uint32_t
1844 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1845                         void *arg, uint32_t evt)
1846 {
1847         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1848         if (ndlp->nlp_DID == Fabric_DID) {
1849                 spin_lock_irq(shost->host_lock);
1850                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1851                 spin_unlock_irq(shost->host_lock);
1852         }
1853         lpfc_unreg_rpi(vport, ndlp);
1854         return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859                          void *arg, uint32_t evt)
1860 {
1861         struct lpfc_iocbq *cmdiocb, *rspiocb;
1862         IOCB_t *irsp;
1863
1864         cmdiocb = (struct lpfc_iocbq *) arg;
1865         rspiocb = cmdiocb->context_un.rsp_iocb;
1866
1867         irsp = &rspiocb->iocb;
1868         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1869                 lpfc_drop_node(vport, ndlp);
1870                 return NLP_STE_FREED_NODE;
1871         }
1872         return ndlp->nlp_state;
1873 }
1874
1875 static uint32_t
1876 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1877                             struct lpfc_nodelist *ndlp,
1878                             void *arg, uint32_t evt)
1879 {
1880         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1881         MAILBOX_t    *mb = &pmb->mb;
1882
1883         if (!mb->mbxStatus)
1884                 ndlp->nlp_rpi = mb->un.varWords[0];
1885         else {
1886                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1887                         lpfc_drop_node(vport, ndlp);
1888                         return NLP_STE_FREED_NODE;
1889                 }
1890         }
1891         return ndlp->nlp_state;
1892 }
1893
1894 static uint32_t
1895 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1896                         void *arg, uint32_t evt)
1897 {
1898         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1899
1900         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1901                 spin_lock_irq(shost->host_lock);
1902                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1903                 spin_unlock_irq(shost->host_lock);
1904                 return ndlp->nlp_state;
1905         }
1906         lpfc_drop_node(vport, ndlp);
1907         return NLP_STE_FREED_NODE;
1908 }
1909
1910 static uint32_t
1911 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1912                            void *arg, uint32_t evt)
1913 {
1914         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1915
1916         /* Don't do anything that will mess up processing of the
1917          * previous RSCN.
1918          */
1919         if (vport->fc_flag & FC_RSCN_DEFERRED)
1920                 return ndlp->nlp_state;
1921
1922         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1923         spin_lock_irq(shost->host_lock);
1924         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1925         spin_unlock_irq(shost->host_lock);
1926         return ndlp->nlp_state;
1927 }
1928
1929
1930 /* This next section defines the NPort Discovery State Machine */
1931
1932 /* There are 4 different double linked lists nodelist entries can reside on.
1933  * The plogi list and adisc list are used when Link Up discovery or RSCN
1934  * processing is needed. Each list holds the nodes that we will send PLOGI
1935  * or ADISC on. These lists will keep track of what nodes will be effected
1936  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1937  * The unmapped_list will contain all nodes that we have successfully logged
1938  * into at the Fibre Channel level. The mapped_list will contain all nodes
1939  * that are mapped FCP targets.
1940  */
1941 /*
1942  * The bind list is a list of undiscovered (potentially non-existent) nodes
1943  * that we have saved binding information on. This information is used when
1944  * nodes transition from the unmapped to the mapped list.
1945  */
1946 /* For UNUSED_NODE state, the node has just been allocated .
1947  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1948  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1949  * and put on the unmapped list. For ADISC processing, the node is taken off
1950  * the ADISC list and placed on either the mapped or unmapped list (depending
1951  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1952  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1953  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1954  * node, the node is taken off the unmapped list. The binding list is checked
1955  * for a valid binding, or a binding is automatically assigned. If binding
1956  * assignment is unsuccessful, the node is left on the unmapped list. If
1957  * binding assignment is successful, the associated binding list entry (if
1958  * any) is removed, and the node is placed on the mapped list.
1959  */
1960 /*
1961  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1962  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1963  * expire, all effected nodes will receive a DEVICE_RM event.
1964  */
1965 /*
1966  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1967  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1968  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1969  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1970  * we will first process the ADISC list.  32 entries are processed initially and
1971  * ADISC is initited for each one.  Completions / Events for each node are
1972  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1973  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1974  * waiting, and the ADISC list count is identically 0, then we are done. For
1975  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1976  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1977  * list.  32 entries are processed initially and PLOGI is initited for each one.
1978  * Completions / Events for each node are funnelled thru the state machine.  As
1979  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1980  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1981  * indentically 0, then we are done. We have now completed discovery / RSCN
1982  * handling. Upon completion, ALL nodes should be on either the mapped or
1983  * unmapped lists.
1984  */
1985
1986 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1987      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1988         /* Action routine                  Event       Current State  */
1989         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1990         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1991         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1992         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1993         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1994         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1995         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1996         lpfc_disc_illegal,              /* CMPL_PRLI       */
1997         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1998         lpfc_disc_illegal,              /* CMPL_ADISC      */
1999         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2000         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2001         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2002
2003         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2004         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2005         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2006         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2007         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2008         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2009         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2010         lpfc_disc_illegal,              /* CMPL_PRLI       */
2011         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2012         lpfc_disc_illegal,              /* CMPL_ADISC      */
2013         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2014         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2015         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2016
2017         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2018         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2019         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2020         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2021         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2022         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2023         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2024         lpfc_disc_illegal,              /* CMPL_PRLI       */
2025         lpfc_disc_illegal,              /* CMPL_LOGO       */
2026         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2027         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2028         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2029         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2030
2031         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2032         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2033         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2034         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2035         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2036         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2037         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2038         lpfc_disc_illegal,              /* CMPL_PRLI       */
2039         lpfc_disc_illegal,              /* CMPL_LOGO       */
2040         lpfc_disc_illegal,              /* CMPL_ADISC      */
2041         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2042         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2043         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2044
2045         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2046         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2047         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2048         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2049         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2050         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2051         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2052         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2053         lpfc_disc_illegal,              /* CMPL_LOGO       */
2054         lpfc_disc_illegal,              /* CMPL_ADISC      */
2055         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2056         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2057         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2058
2059         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2060         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2061         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2062         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2063         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2064         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2065         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2066         lpfc_disc_illegal,              /* CMPL_PRLI       */
2067         lpfc_disc_illegal,              /* CMPL_LOGO       */
2068         lpfc_disc_illegal,              /* CMPL_ADISC      */
2069         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2070         lpfc_disc_illegal,              /* DEVICE_RM       */
2071         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2072
2073         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2074         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2075         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2076         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2077         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2078         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2079         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2080         lpfc_disc_illegal,              /* CMPL_PRLI       */
2081         lpfc_disc_illegal,              /* CMPL_LOGO       */
2082         lpfc_disc_illegal,              /* CMPL_ADISC      */
2083         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2084         lpfc_disc_illegal,              /* DEVICE_RM       */
2085         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2086
2087         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2088         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2089         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2090         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2091         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2092         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2093         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2094         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2095         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2096         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2097         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2098         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2099         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2100 };
2101
2102 int
2103 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2104                         void *arg, uint32_t evt)
2105 {
2106         uint32_t cur_state, rc;
2107         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2108                          uint32_t);
2109         uint32_t got_ndlp = 0;
2110
2111         if (lpfc_nlp_get(ndlp))
2112                 got_ndlp = 1;
2113
2114         cur_state = ndlp->nlp_state;
2115
2116         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2117         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2118                          "0211 DSM in event x%x on NPort x%x in "
2119                          "state %d Data: x%x\n",
2120                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2121
2122         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2123                  "DSM in:          evt:%d ste:%d did:x%x",
2124                 evt, cur_state, ndlp->nlp_DID);
2125
2126         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2127         rc = (func) (vport, ndlp, arg, evt);
2128
2129         /* DSM out state <rc> on NPort <nlp_DID> */
2130         if (got_ndlp) {
2131                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2132                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2133                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2134
2135                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2136                         "DSM out:         ste:%d did:x%x flg:x%x",
2137                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2138                 /* Decrement the ndlp reference count held for this function */
2139                 lpfc_nlp_put(ndlp);
2140         } else {
2141                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2142                         "0213 DSM out state %d on NPort free\n", rc);
2143
2144                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2145                         "DSM out:         ste:%d did:x%x flg:x%x",
2146                         rc, 0, 0);
2147         }
2148
2149         return rc;
2150 }