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) 2004-2007 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_disc.h"
  34 #include "lpfc_scsi.h"
  35 #include "lpfc.h"
  36 #include "lpfc_logmsg.h"
  37 #include "lpfc_crtn.h"
  38 #include "lpfc_vport.h"
  39
  40
  41 /* Called to verify a rcv'ed ADISC was intended for us. */
  42 static int
  43 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  44                  struct lpfc_name *nn, struct lpfc_name *pn)
  45 {
  46         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  47          * table entry for that node.
  48          */
  49         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  50                 return 0;
  51
  52         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  53                 return 0;
  54
  55         /* we match, return success */
  56         return 1;
  57 }
  58
  59 int
  60 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  61                  struct serv_parm * sp, uint32_t class)
  62 {
  63         volatile struct serv_parm *hsp = &vport->fc_sparam;
  64         uint16_t hsp_value, ssp_value = 0;
  65
  66         /*
  67          * The receive data field size and buffer-to-buffer receive data field
  68          * size entries are 16 bits but are represented as two 8-bit fields in
  69          * the driver data structure to account for rsvd bits and other control
  70          * bits.  Reconstruct and compare the fields as a 16-bit values before
  71          * correcting the byte values.
  72          */
  73         if (sp->cls1.classValid) {
  74                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  75                                 hsp->cls1.rcvDataSizeLsb;
  76                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  77                                 sp->cls1.rcvDataSizeLsb;
  78                 if (!ssp_value)
  79                         goto bad_service_param;
  80                 if (ssp_value > hsp_value) {
  81                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  82                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  83                 }
  84         } else if (class == CLASS1) {
  85                 goto bad_service_param;
  86         }
  87
  88         if (sp->cls2.classValid) {
  89                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  90                                 hsp->cls2.rcvDataSizeLsb;
  91                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  92                                 sp->cls2.rcvDataSizeLsb;
  93                 if (!ssp_value)
  94                         goto bad_service_param;
  95                 if (ssp_value > hsp_value) {
  96                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  97                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  98                 }
  99         } else if (class == CLASS2) {
 100                 goto bad_service_param;
 101         }
 102
 103         if (sp->cls3.classValid) {
 104                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 105                                 hsp->cls3.rcvDataSizeLsb;
 106                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 107                                 sp->cls3.rcvDataSizeLsb;
 108                 if (!ssp_value)
 109                         goto bad_service_param;
 110                 if (ssp_value > hsp_value) {
 111                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 112                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 113                 }
 114         } else if (class == CLASS3) {
 115                 goto bad_service_param;
 116         }
 117
 118         /*
 119          * Preserve the upper four bits of the MSB from the PLOGI response.
 120          * These bits contain the Buffer-to-Buffer State Change Number
 121          * from the target and need to be passed to the FW.
 122          */
 123         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 124         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 125         if (ssp_value > hsp_value) {
 126                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 127                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 128                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 129         }
 130
 131         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 132         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 133         return 1;
 134 bad_service_param:
 135         lpfc_printf_log(vport->phba, KERN_ERR, LOG_DISCOVERY,
 136                         "%d (%d):0207 Device %x "
 137                         "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 138                         "invalid service parameters.  Ignoring device.\n",
 139                         vport->phba->brd_no, ndlp->vport->vpi, ndlp->nlp_DID,
 140                         sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 141                         sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 142                         sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 143                         sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 144         return 0;
 145 }
 146
 147 static void *
 148 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 149                         struct lpfc_iocbq *rspiocb)
 150 {
 151         struct lpfc_dmabuf *pcmd, *prsp;
 152         uint32_t *lp;
 153         void     *ptr = NULL;
 154         IOCB_t   *irsp;
 155
 156         irsp = &rspiocb->iocb;
 157         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 158
 159         /* For lpfc_els_abort, context2 could be zero'ed to delay
 160          * freeing associated memory till after ABTS completes.
 161          */
 162         if (pcmd) {
 163                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 164                                        list);
 165                 if (prsp) {
 166                         lp = (uint32_t *) prsp->virt;
 167                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 168                 }
 169         } else {
 170                 /* Force ulpStatus error since we are returning NULL ptr */
 171                 if (!(irsp->ulpStatus)) {
 172                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 173                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 174                 }
 175                 ptr = NULL;
 176         }
 177         return ptr;
 178 }
 179
 180
 181 /*
 182  * Free resources / clean up outstanding I/Os
 183  * associated with a LPFC_NODELIST entry. This
 184  * routine effectively results in a "software abort".
 185  */
 186 int
 187 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 188 {
 189         LIST_HEAD(completions);
 190         struct lpfc_sli  *psli = &phba->sli;
 191         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 192         struct lpfc_iocbq *iocb, *next_iocb;
 193         IOCB_t *cmd;
 194
 195         /* Abort outstanding I/O on NPort <nlp_DID> */
 196         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 197                         "%d (%d):0205 Abort outstanding I/O on NPort x%x "
 198                         "Data: x%x x%x x%x\n",
 199                         phba->brd_no, ndlp->vport->vpi, ndlp->nlp_DID,
 200                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
 201
 202         lpfc_fabric_abort_nport(ndlp);
 203
 204         /* First check the txq */
 205         spin_lock_irq(&phba->hbalock);
 206         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 207                 /* Check to see if iocb matches the nport we are looking
 208                    for */
 209                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 210                         /* It matches, so deque and call compl with an
 211                            error */
 212                         list_move_tail(&iocb->list, &completions);
 213                         pring->txq_cnt--;
 214                 }
 215         }
 216
 217         /* Next check the txcmplq */
 218         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 219                 /* Check to see if iocb matches the nport we are looking
 220                    for */
 221                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 222                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 223                 }
 224         }
 225         spin_unlock_irq(&phba->hbalock);
 226
 227         while (!list_empty(&completions)) {
 228                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
 229                 cmd = &iocb->iocb;
 230                 list_del_init(&iocb->list);
 231
 232                 if (!iocb->iocb_cmpl)
 233                         lpfc_sli_release_iocbq(phba, iocb);
 234                 else {
 235                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 236                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 237                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 238                 }
 239         }
 240
 241         /* If we are delaying issuing an ELS command, cancel it */
 242         if (ndlp->nlp_flag & NLP_DELAY_TMO)
 243                 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 244         return 0;
 245 }
 246
 247 static int
 248 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 249                struct lpfc_iocbq *cmdiocb)
 250 {
 251         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 252         struct lpfc_hba    *phba = vport->phba;
 253         struct lpfc_dmabuf *pcmd;
 254         uint32_t *lp;
 255         IOCB_t *icmd;
 256         struct serv_parm *sp;
 257         LPFC_MBOXQ_t *mbox;
 258         struct ls_rjt stat;
 259         int rc;
 260
 261         memset(&stat, 0, sizeof (struct ls_rjt));
 262         if (vport->port_state <= LPFC_FLOGI) {
 263                 /* Before responding to PLOGI, check for pt2pt mode.
 264                  * If we are pt2pt, with an outstanding FLOGI, abort
 265                  * the FLOGI and resend it first.
 266                  */
 267                 if (vport->fc_flag & FC_PT2PT) {
 268                          lpfc_els_abort_flogi(phba);
 269                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 270                                 /* If the other side is supposed to initiate
 271                                  * the PLOGI anyway, just ACC it now and
 272                                  * move on with discovery.
 273                                  */
 274                                 phba->fc_edtov = FF_DEF_EDTOV;
 275                                 phba->fc_ratov = FF_DEF_RATOV;
 276                                 /* Start discovery - this should just do
 277                                    CLEAR_LA */
 278                                 lpfc_disc_start(vport);
 279                         } else
 280                                 lpfc_initial_flogi(vport);
 281                 } else {
 282                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 283                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 284                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 285                                             ndlp);
 286                         return 0;
 287                 }
 288         }
 289         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 290         lp = (uint32_t *) pcmd->virt;
 291         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 292         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
 293                 /* Reject this request because invalid parameters */
 294                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 295                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 296                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp);
 297                 return 0;
 298         }
 299         icmd = &cmdiocb->iocb;
 300
 301         /* PLOGI chkparm OK */
 302         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 303                         "%d (%d):0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 304                         phba->brd_no, vport->vpi,
 305                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 306                         ndlp->nlp_rpi);
 307
 308         if (phba->cfg_fcp_class == 2 && sp->cls2.classValid)
 309                 ndlp->nlp_fcp_info |= CLASS2;
 310         else
 311                 ndlp->nlp_fcp_info |= CLASS3;
 312
 313         ndlp->nlp_class_sup = 0;
 314         if (sp->cls1.classValid)
 315                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 316         if (sp->cls2.classValid)
 317                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 318         if (sp->cls3.classValid)
 319                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 320         if (sp->cls4.classValid)
 321                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 322         ndlp->nlp_maxframe =
 323                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 324
 325         /* no need to reg_login if we are already in one of these states */
 326         switch (ndlp->nlp_state) {
 327         case  NLP_STE_NPR_NODE:
 328                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 329                         break;
 330         case  NLP_STE_REG_LOGIN_ISSUE:
 331         case  NLP_STE_PRLI_ISSUE:
 332         case  NLP_STE_UNMAPPED_NODE:
 333         case  NLP_STE_MAPPED_NODE:
 334                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 335                 return 1;
 336         }
 337
 338         if ((vport->fc_flag & FC_PT2PT) &&
 339             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 340                 /* rcv'ed PLOGI decides what our NPortId will be */
 341                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 342                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 343                 if (mbox == NULL)
 344                         goto out;
 345                 lpfc_config_link(phba, mbox);
 346                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 347                 mbox->vport = vport;
 348                 rc = lpfc_sli_issue_mbox
 349                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 350                 if (rc == MBX_NOT_FINISHED) {
 351                         mempool_free(mbox, phba->mbox_mem_pool);
 352                         goto out;
 353                 }
 354
 355                 lpfc_can_disctmo(vport);
 356         }
 357         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 358         if (!mbox)
 359                 goto out;
 360
 361         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 362                             (uint8_t *) sp, mbox, 0);
 363         if (rc) {
 364                 mempool_free(mbox, phba->mbox_mem_pool);
 365                 goto out;
 366         }
 367
 368         /* ACC PLOGI rsp command needs to execute first,
 369          * queue this mbox command to be processed later.
 370          */
 371         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 372         /*
 373          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 374          * command issued in lpfc_cmpl_els_acc().
 375          */
 376         mbox->vport = vport;
 377         spin_lock_irq(shost->host_lock);
 378         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 379         spin_unlock_irq(shost->host_lock);
 380
 381         /*
 382          * If there is an outstanding PLOGI issued, abort it before
 383          * sending ACC rsp for received PLOGI. If pending plogi
 384          * is not canceled here, the plogi will be rejected by
 385          * remote port and will be retried. On a configuration with
 386          * single discovery thread, this will cause a huge delay in
 387          * discovery. Also this will cause multiple state machines
 388          * running in parallel for this node.
 389          */
 390         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 391                 /* software abort outstanding PLOGI */
 392                 lpfc_els_abort(phba, ndlp);
 393         }
 394
 395         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 396         return 1;
 397
 398 out:
 399         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 400         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 401         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp);
 402         return 0;
 403 }
 404
 405 static int
 406 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 407                 struct lpfc_iocbq *cmdiocb)
 408 {
 409         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 410         struct lpfc_dmabuf *pcmd;
 411         struct serv_parm   *sp;
 412         struct lpfc_name   *pnn, *ppn;
 413         struct ls_rjt stat;
 414         ADISC *ap;
 415         IOCB_t *icmd;
 416         uint32_t *lp;
 417         uint32_t cmd;
 418
 419         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 420         lp = (uint32_t *) pcmd->virt;
 421
 422         cmd = *lp++;
 423         if (cmd == ELS_CMD_ADISC) {
 424                 ap = (ADISC *) lp;
 425                 pnn = (struct lpfc_name *) & ap->nodeName;
 426                 ppn = (struct lpfc_name *) & ap->portName;
 427         } else {
 428                 sp = (struct serv_parm *) lp;
 429                 pnn = (struct lpfc_name *) & sp->nodeName;
 430                 ppn = (struct lpfc_name *) & sp->portName;
 431         }
 432
 433         icmd = &cmdiocb->iocb;
 434         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 435                 if (cmd == ELS_CMD_ADISC) {
 436                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 437                 } else {
 438                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 439                                          NULL, 0);
 440                 }
 441                 return 1;
 442         }
 443         /* Reject this request because invalid parameters */
 444         stat.un.b.lsRjtRsvd0 = 0;
 445         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 446         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 447         stat.un.b.vendorUnique = 0;
 448         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp);
 449
 450         /* 1 sec timeout */
 451         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 452
 453         spin_lock_irq(shost->host_lock);
 454         ndlp->nlp_flag |= NLP_DELAY_TMO;
 455         spin_unlock_irq(shost->host_lock);
 456         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 457         ndlp->nlp_prev_state = ndlp->nlp_state;
 458         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 459         return 0;
 460 }
 461
 462 static int
 463 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 464               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 465 {
 466         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 467
 468         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 469         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 470          * PLOGIs during LOGO storms from a device.
 471          */
 472         spin_lock_irq(shost->host_lock);
 473         ndlp->nlp_flag |= NLP_LOGO_ACC;
 474         spin_unlock_irq(shost->host_lock);
 475         if (els_cmd == ELS_CMD_PRLO)
 476                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
 477         else
 478                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 479
 480         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 481             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 482                 /* Only try to re-login if this is NOT a Fabric Node */
 483                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 484                 spin_lock_irq(shost->host_lock);
 485                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 486                 spin_unlock_irq(shost->host_lock);
 487
 488                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 489                 ndlp->nlp_prev_state = ndlp->nlp_state;
 490                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 491         } else {
 492                 ndlp->nlp_prev_state = ndlp->nlp_state;
 493                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 494         }
 495
 496         spin_lock_irq(shost->host_lock);
 497         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 498         spin_unlock_irq(shost->host_lock);
 499         /* The driver has to wait until the ACC completes before it continues
 500          * processing the LOGO.  The action will resume in
 501          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 502          * unreg_login, the driver waits so the ACC does not get aborted.
 503          */
 504         return 0;
 505 }
 506
 507 static void
 508 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 509               struct lpfc_iocbq *cmdiocb)
 510 {
 511         struct lpfc_dmabuf *pcmd;
 512         uint32_t *lp;
 513         PRLI *npr;
 514         struct fc_rport *rport = ndlp->rport;
 515         u32 roles;
 516
 517         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 518         lp = (uint32_t *) pcmd->virt;
 519         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 520
 521         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 522         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 523         if (npr->prliType == PRLI_FCP_TYPE) {
 524                 if (npr->initiatorFunc)
 525                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 526                 if (npr->targetFunc)
 527                         ndlp->nlp_type |= NLP_FCP_TARGET;
 528                 if (npr->Retry)
 529                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 530         }
 531         if (rport) {
 532                 /* We need to update the rport role values */
 533                 roles = FC_RPORT_ROLE_UNKNOWN;
 534                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 535                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 536                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 537                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 538                 fc_remote_port_rolechg(rport, roles);
 539         }
 540 }
 541
 542 static uint32_t
 543 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 544 {
 545         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 546         struct lpfc_hba  *phba = vport->phba;
 547
 548         /* Check config parameter use-adisc or FCP-2 */
 549         if ((phba->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 550             ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 551                 spin_lock_irq(shost->host_lock);
 552                 ndlp->nlp_flag |= NLP_NPR_ADISC;
 553                 spin_unlock_irq(shost->host_lock);
 554                 return 1;
 555         }
 556         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 557         lpfc_unreg_rpi(vport, ndlp);
 558         return 0;
 559 }
 560
 561 static uint32_t
 562 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 563                   void *arg, uint32_t evt)
 564 {
 565         lpfc_printf_log(vport->phba, KERN_ERR, LOG_DISCOVERY,
 566                         "%d (%d):0253 Illegal State Transition: node x%x "
 567                         "event x%x, state x%x Data: x%x x%x\n",
 568                         vport->phba->brd_no, vport->vpi,
 569                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 570                         ndlp->nlp_flag);
 571         return ndlp->nlp_state;
 572 }
 573
 574 /* Start of Discovery State Machine routines */
 575
 576 static uint32_t
 577 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 578                            void *arg, uint32_t evt)
 579 {
 580         struct lpfc_iocbq *cmdiocb;
 581
 582         cmdiocb = (struct lpfc_iocbq *) arg;
 583
 584         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 585                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 586                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 587                 return ndlp->nlp_state;
 588         }
 589         lpfc_drop_node(vport, ndlp);
 590         return NLP_STE_FREED_NODE;
 591 }
 592
 593 static uint32_t
 594 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 595                          void *arg, uint32_t evt)
 596 {
 597         lpfc_issue_els_logo(vport, ndlp, 0);
 598         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 599         return ndlp->nlp_state;
 600 }
 601
 602 static uint32_t
 603 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 604                           void *arg, uint32_t evt)
 605 {
 606         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 607         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 608
 609         spin_lock_irq(shost->host_lock);
 610         ndlp->nlp_flag |= NLP_LOGO_ACC;
 611         spin_unlock_irq(shost->host_lock);
 612         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 613         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 614
 615         return ndlp->nlp_state;
 616 }
 617
 618 static uint32_t
 619 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 620                            void *arg, uint32_t evt)
 621 {
 622         lpfc_drop_node(vport, ndlp);
 623         return NLP_STE_FREED_NODE;
 624 }
 625
 626 static uint32_t
 627 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 628                            void *arg, uint32_t evt)
 629 {
 630         lpfc_drop_node(vport, ndlp);
 631         return NLP_STE_FREED_NODE;
 632 }
 633
 634 static uint32_t
 635 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 636                            void *arg, uint32_t evt)
 637 {
 638         struct lpfc_hba   *phba = vport->phba;
 639         struct lpfc_iocbq *cmdiocb = arg;
 640         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 641         uint32_t *lp = (uint32_t *) pcmd->virt;
 642         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 643         struct ls_rjt stat;
 644         int port_cmp;
 645
 646         memset(&stat, 0, sizeof (struct ls_rjt));
 647
 648         /* For a PLOGI, we only accept if our portname is less
 649          * than the remote portname.
 650          */
 651         phba->fc_stat.elsLogiCol++;
 652         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 653                           sizeof(struct lpfc_name));
 654
 655         if (port_cmp >= 0) {
 656                 /* Reject this request because the remote node will accept
 657                    ours */
 658                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 659                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 660                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp);
 661         } else {
 662                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
 663         } /* If our portname was less */
 664
 665         return ndlp->nlp_state;
 666 }
 667
 668 static uint32_t
 669 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 670                           void *arg, uint32_t evt)
 671 {
 672         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 673         struct ls_rjt     stat;
 674
 675         memset(&stat, 0, sizeof (struct ls_rjt));
 676         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 677         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 678         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp);
 679         return ndlp->nlp_state;
 680 }
 681
 682 static uint32_t
 683 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 684                           void *arg, uint32_t evt)
 685 {
 686         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 687
 688                                 /* software abort outstanding PLOGI */
 689         lpfc_els_abort(vport->phba, ndlp);
 690
 691         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 692         return ndlp->nlp_state;
 693 }
 694
 695 static uint32_t
 696 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 697                          void *arg, uint32_t evt)
 698 {
 699         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 700         struct lpfc_hba   *phba = vport->phba;
 701         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 702
 703         /* software abort outstanding PLOGI */
 704         lpfc_els_abort(phba, ndlp);
 705
 706         if (evt == NLP_EVT_RCV_LOGO) {
 707                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 708         } else {
 709                 lpfc_issue_els_logo(vport, ndlp, 0);
 710         }
 711
 712         /* Put ndlp in npr state set plogi timer for 1 sec */
 713         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 714         spin_lock_irq(shost->host_lock);
 715         ndlp->nlp_flag |= NLP_DELAY_TMO;
 716         spin_unlock_irq(shost->host_lock);
 717         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 718         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 719         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 720
 721         return ndlp->nlp_state;
 722 }
 723
 724 static uint32_t
 725 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 726                             struct lpfc_nodelist *ndlp,
 727                             void *arg,
 728                             uint32_t evt)
 729 {
 730         struct lpfc_hba    *phba = vport->phba;
 731         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 732         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 733         uint32_t *lp;
 734         IOCB_t *irsp;
 735         struct serv_parm *sp;
 736         LPFC_MBOXQ_t *mbox;
 737
 738         cmdiocb = (struct lpfc_iocbq *) arg;
 739         rspiocb = cmdiocb->context_un.rsp_iocb;
 740
 741         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 742                 /* Recovery from PLOGI collision logic */
 743                 return ndlp->nlp_state;
 744         }
 745
 746         irsp = &rspiocb->iocb;
 747
 748         if (irsp->ulpStatus)
 749                 goto out;
 750
 751         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 752
 753         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 754
 755         lp = (uint32_t *) prsp->virt;
 756         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 757         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 758                 goto out;
 759
 760         /* PLOGI chkparm OK */
 761         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 762                         "%d (%d):0121 PLOGI chkparm OK "
 763                         "Data: x%x x%x x%x x%x\n",
 764                         phba->brd_no, vport->vpi,
 765                         ndlp->nlp_DID, ndlp->nlp_state,
 766                         ndlp->nlp_flag, ndlp->nlp_rpi);
 767
 768         if (phba->cfg_fcp_class == 2 && (sp->cls2.classValid))
 769                 ndlp->nlp_fcp_info |= CLASS2;
 770         else
 771                 ndlp->nlp_fcp_info |= CLASS3;
 772
 773         ndlp->nlp_class_sup = 0;
 774         if (sp->cls1.classValid)
 775                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 776         if (sp->cls2.classValid)
 777                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 778         if (sp->cls3.classValid)
 779                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 780         if (sp->cls4.classValid)
 781                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 782         ndlp->nlp_maxframe =
 783                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 784
 785         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 786         if (!mbox) {
 787                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 788                         "%d (%d):0133 PLOGI: no memory for reg_login "
 789                         "Data: x%x x%x x%x x%x\n",
 790                         phba->brd_no, vport->vpi,
 791                         ndlp->nlp_DID, ndlp->nlp_state,
 792                         ndlp->nlp_flag, ndlp->nlp_rpi);
 793                 goto out;
 794         }
 795
 796         lpfc_unreg_rpi(vport, ndlp);
 797
 798         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 799                            (uint8_t *) sp, mbox, 0) == 0) {
 800                 switch (ndlp->nlp_DID) {
 801                 case NameServer_DID:
 802                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 803                         break;
 804                 case FDMI_DID:
 805                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 806                         break;
 807                 default:
 808                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 809                 }
 810                 mbox->context2 = lpfc_nlp_get(ndlp);
 811                 mbox->vport = vport;
 812                 if (lpfc_sli_issue_mbox(phba, mbox,
 813                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 814                     != MBX_NOT_FINISHED) {
 815                         lpfc_nlp_set_state(vport, ndlp,
 816                                            NLP_STE_REG_LOGIN_ISSUE);
 817                         return ndlp->nlp_state;
 818                 }
 819                 lpfc_nlp_put(ndlp);
 820                 mp = (struct lpfc_dmabuf *) mbox->context1;
 821                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 822                 kfree(mp);
 823                 mempool_free(mbox, phba->mbox_mem_pool);
 824
 825                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 826                         "%d (%d):0134 PLOGI: cannot issue reg_login "
 827                         "Data: x%x x%x x%x x%x\n",
 828                         phba->brd_no, vport->vpi,
 829                         ndlp->nlp_DID, ndlp->nlp_state,
 830                         ndlp->nlp_flag, ndlp->nlp_rpi);
 831         } else {
 832                 mempool_free(mbox, phba->mbox_mem_pool);
 833
 834                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 835                         "%d (%d):0135 PLOGI: cannot format reg_login "
 836                         "Data: x%x x%x x%x x%x\n",
 837                         phba->brd_no, vport->vpi,
 838                         ndlp->nlp_DID, ndlp->nlp_state,
 839                         ndlp->nlp_flag, ndlp->nlp_rpi);
 840         }
 841
 842
 843 out:
 844         if (ndlp->nlp_DID == NameServer_DID) {
 845                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 846                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 847                         "%d (%d):0261 Cannot Register NameServer login\n",
 848                         phba->brd_no, vport->vpi);
 849         }
 850
 851         /* Free this node since the driver cannot login or has the wrong
 852            sparm */
 853         lpfc_drop_node(vport, ndlp);
 854         return NLP_STE_FREED_NODE;
 855 }
 856
 857 static uint32_t
 858 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 859                            void *arg, uint32_t evt)
 860 {
 861         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 862
 863         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 864                 spin_lock_irq(shost->host_lock);
 865                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 866                 spin_unlock_irq(shost->host_lock);
 867                 return ndlp->nlp_state;
 868         } else {
 869                 /* software abort outstanding PLOGI */
 870                 lpfc_els_abort(vport->phba, ndlp);
 871
 872                 lpfc_drop_node(vport, ndlp);
 873                 return NLP_STE_FREED_NODE;
 874         }
 875 }
 876
 877 static uint32_t
 878 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 879                               struct lpfc_nodelist *ndlp,
 880                               void *arg,
 881                               uint32_t evt)
 882 {
 883         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 884         struct lpfc_hba  *phba = vport->phba;
 885
 886         /* Don't do anything that will mess up processing of the
 887          * previous RSCN.
 888          */
 889         if (vport->fc_flag & FC_RSCN_DEFERRED)
 890                 return ndlp->nlp_state;
 891
 892         /* software abort outstanding PLOGI */
 893         lpfc_els_abort(phba, ndlp);
 894
 895         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 896         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 897         spin_lock_irq(shost->host_lock);
 898         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 899         spin_unlock_irq(shost->host_lock);
 900
 901         return ndlp->nlp_state;
 902 }
 903
 904 static uint32_t
 905 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 906                            void *arg, uint32_t evt)
 907 {
 908         struct lpfc_hba   *phba = vport->phba;
 909         struct lpfc_iocbq *cmdiocb;
 910
 911         /* software abort outstanding ADISC */
 912         lpfc_els_abort(phba, ndlp);
 913
 914         cmdiocb = (struct lpfc_iocbq *) arg;
 915
 916         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
 917                 return ndlp->nlp_state;
 918
 919         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 920         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
 921         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
 922
 923         return ndlp->nlp_state;
 924 }
 925
 926 static uint32_t
 927 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 928                           void *arg, uint32_t evt)
 929 {
 930         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 931
 932         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
 933         return ndlp->nlp_state;
 934 }
 935
 936 static uint32_t
 937 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 938                           void *arg, uint32_t evt)
 939 {
 940         struct lpfc_hba *phba = vport->phba;
 941         struct lpfc_iocbq *cmdiocb;
 942
 943         cmdiocb = (struct lpfc_iocbq *) arg;
 944
 945         /* software abort outstanding ADISC */
 946         lpfc_els_abort(phba, ndlp);
 947
 948         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 949         return ndlp->nlp_state;
 950 }
 951
 952 static uint32_t
 953 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
 954                             struct lpfc_nodelist *ndlp,
 955                             void *arg, uint32_t evt)
 956 {
 957         struct lpfc_iocbq *cmdiocb;
 958
 959         cmdiocb = (struct lpfc_iocbq *) arg;
 960
 961         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
 962         return ndlp->nlp_state;
 963 }
 964
 965 static uint32_t
 966 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 967                           void *arg, uint32_t evt)
 968 {
 969         struct lpfc_iocbq *cmdiocb;
 970
 971         cmdiocb = (struct lpfc_iocbq *) arg;
 972
 973         /* Treat like rcv logo */
 974         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
 975         return ndlp->nlp_state;
 976 }
 977
 978 static uint32_t
 979 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
 980                             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, *rspiocb;
 986         IOCB_t *irsp;
 987         ADISC *ap;
 988
 989         cmdiocb = (struct lpfc_iocbq *) arg;
 990         rspiocb = cmdiocb->context_un.rsp_iocb;
 991
 992         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 993         irsp = &rspiocb->iocb;
 994
 995         if ((irsp->ulpStatus) ||
 996             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
 997                 /* 1 sec timeout */
 998                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 999                 spin_lock_irq(shost->host_lock);
1000                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1001                 spin_unlock_irq(shost->host_lock);
1002                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1003
1004                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1005                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1006
1007                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1008                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1009                 lpfc_unreg_rpi(vport, ndlp);
1010                 return ndlp->nlp_state;
1011         }
1012
1013         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1014                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1015                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1016         } else {
1017                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1018                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1019         }
1020         return ndlp->nlp_state;
1021 }
1022
1023 static uint32_t
1024 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1025                            void *arg, uint32_t evt)
1026 {
1027         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1028
1029         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1030                 spin_lock_irq(shost->host_lock);
1031                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1032                 spin_unlock_irq(shost->host_lock);
1033                 return ndlp->nlp_state;
1034         } else {
1035                 /* software abort outstanding ADISC */
1036                 lpfc_els_abort(vport->phba, ndlp);
1037
1038                 lpfc_drop_node(vport, ndlp);
1039                 return NLP_STE_FREED_NODE;
1040         }
1041 }
1042
1043 static uint32_t
1044 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1045                               struct lpfc_nodelist *ndlp,
1046                               void *arg,
1047                               uint32_t evt)
1048 {
1049         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1050         struct lpfc_hba  *phba = vport->phba;
1051
1052         /* Don't do anything that will mess up processing of the
1053          * previous RSCN.
1054          */
1055         if (vport->fc_flag & FC_RSCN_DEFERRED)
1056                 return ndlp->nlp_state;
1057
1058         /* software abort outstanding ADISC */
1059         lpfc_els_abort(phba, ndlp);
1060
1061         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1062         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1063         spin_lock_irq(shost->host_lock);
1064         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1065         spin_unlock_irq(shost->host_lock);
1066         lpfc_disc_set_adisc(vport, ndlp);
1067         return ndlp->nlp_state;
1068 }
1069
1070 static uint32_t
1071 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1072                               struct lpfc_nodelist *ndlp,
1073                               void *arg,
1074                               uint32_t evt)
1075 {
1076         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1077
1078         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1079         return ndlp->nlp_state;
1080 }
1081
1082 static uint32_t
1083 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1084                              struct lpfc_nodelist *ndlp,
1085                              void *arg,
1086                              uint32_t evt)
1087 {
1088         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1089
1090         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1091         return ndlp->nlp_state;
1092 }
1093
1094 static uint32_t
1095 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1096                              struct lpfc_nodelist *ndlp,
1097                              void *arg,
1098                              uint32_t evt)
1099 {
1100         struct lpfc_hba   *phba = vport->phba;
1101         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1102         LPFC_MBOXQ_t      *mb;
1103         LPFC_MBOXQ_t      *nextmb;
1104         struct lpfc_dmabuf *mp;
1105
1106         cmdiocb = (struct lpfc_iocbq *) arg;
1107
1108         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1109         if ((mb = phba->sli.mbox_active)) {
1110                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1111                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1112                         lpfc_nlp_put(ndlp);
1113                         mb->context2 = NULL;
1114                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1115                 }
1116         }
1117
1118         spin_lock_irq(&phba->hbalock);
1119         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1120                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1121                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1122                         mp = (struct lpfc_dmabuf *) (mb->context1);
1123                         if (mp) {
1124                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1125                                 kfree(mp);
1126                         }
1127                         lpfc_nlp_put(ndlp);
1128                         list_del(&mb->list);
1129                         mempool_free(mb, phba->mbox_mem_pool);
1130                 }
1131         }
1132         spin_unlock_irq(&phba->hbalock);
1133
1134         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1135         return ndlp->nlp_state;
1136 }
1137
1138 static uint32_t
1139 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1140                                struct lpfc_nodelist *ndlp,
1141                                void *arg,
1142                                uint32_t evt)
1143 {
1144         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1145
1146         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1147         return ndlp->nlp_state;
1148 }
1149
1150 static uint32_t
1151 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1152                              struct lpfc_nodelist *ndlp,
1153                              void *arg,
1154                              uint32_t evt)
1155 {
1156         struct lpfc_iocbq *cmdiocb;
1157
1158         cmdiocb = (struct lpfc_iocbq *) arg;
1159         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1160         return ndlp->nlp_state;
1161 }
1162
1163 static uint32_t
1164 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1165                                   struct lpfc_nodelist *ndlp,
1166                                   void *arg,
1167                                   uint32_t evt)
1168 {
1169         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1170         struct lpfc_hba  *phba = vport->phba;
1171         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1172         MAILBOX_t *mb = &pmb->mb;
1173         uint32_t did  = mb->un.varWords[1];
1174
1175         if (mb->mbxStatus) {
1176                 /* RegLogin failed */
1177                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
1178                                 "%d (%d):0246 RegLogin failed Data: x%x x%x "
1179                                 "x%x\n",
1180                                 phba->brd_no, vport->vpi,
1181                                 did, mb->mbxStatus, vport->port_state);
1182
1183                 /*
1184                  * If RegLogin failed due to lack of HBA resources do not
1185                  * retry discovery.
1186                  */
1187                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1188                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1189                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1190                         return ndlp->nlp_state;
1191                 }
1192
1193                 /* Put ndlp in npr state set plogi timer for 1 sec */
1194                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1195                 spin_lock_irq(shost->host_lock);
1196                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1197                 spin_unlock_irq(shost->host_lock);
1198                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1199
1200                 lpfc_issue_els_logo(vport, ndlp, 0);
1201                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1202                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1203                 return ndlp->nlp_state;
1204         }
1205
1206         ndlp->nlp_rpi = mb->un.varWords[0];
1207
1208         /* Only if we are not a fabric nport do we issue PRLI */
1209         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1210                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1211                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1212                 lpfc_issue_els_prli(vport, ndlp, 0);
1213         } else {
1214                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1215                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1216         }
1217         return ndlp->nlp_state;
1218 }
1219
1220 static uint32_t
1221 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1222                               struct lpfc_nodelist *ndlp,
1223                               void *arg,
1224                               uint32_t evt)
1225 {
1226         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1227
1228         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1229                 spin_lock_irq(shost->host_lock);
1230                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1231                 spin_unlock_irq(shost->host_lock);
1232                 return ndlp->nlp_state;
1233         } else {
1234                 lpfc_drop_node(vport, ndlp);
1235                 return NLP_STE_FREED_NODE;
1236         }
1237 }
1238
1239 static uint32_t
1240 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1241                                  struct lpfc_nodelist *ndlp,
1242                                  void *arg,
1243                                  uint32_t evt)
1244 {
1245         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1246
1247         /* Don't do anything that will mess up processing of the
1248          * previous RSCN.
1249          */
1250         if (vport->fc_flag & FC_RSCN_DEFERRED)
1251                 return ndlp->nlp_state;
1252
1253         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1254         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1255         spin_lock_irq(shost->host_lock);
1256         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1257         spin_unlock_irq(shost->host_lock);
1258         lpfc_disc_set_adisc(vport, ndlp);
1259         return ndlp->nlp_state;
1260 }
1261
1262 static uint32_t
1263 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1264                           void *arg, uint32_t evt)
1265 {
1266         struct lpfc_iocbq *cmdiocb;
1267
1268         cmdiocb = (struct lpfc_iocbq *) arg;
1269
1270         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1271         return ndlp->nlp_state;
1272 }
1273
1274 static uint32_t
1275 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1276                          void *arg, uint32_t evt)
1277 {
1278         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1279
1280         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1281         return ndlp->nlp_state;
1282 }
1283
1284 static uint32_t
1285 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1286                          void *arg, uint32_t evt)
1287 {
1288         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1289
1290         /* Software abort outstanding PRLI before sending acc */
1291         lpfc_els_abort(vport->phba, ndlp);
1292
1293         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1294         return ndlp->nlp_state;
1295 }
1296
1297 static uint32_t
1298 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1299                            void *arg, uint32_t evt)
1300 {
1301         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1302
1303         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1304         return ndlp->nlp_state;
1305 }
1306
1307 /* This routine is envoked when we rcv a PRLO request from a nport
1308  * we are logged into.  We should send back a PRLO rsp setting the
1309  * appropriate bits.
1310  * NEXT STATE = PRLI_ISSUE
1311  */
1312 static uint32_t
1313 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1314                          void *arg, uint32_t evt)
1315 {
1316         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1317
1318         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1319         return ndlp->nlp_state;
1320 }
1321
1322 static uint32_t
1323 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1324                           void *arg, uint32_t evt)
1325 {
1326         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1327         struct lpfc_iocbq *cmdiocb, *rspiocb;
1328         struct lpfc_hba   *phba = vport->phba;
1329         IOCB_t *irsp;
1330         PRLI *npr;
1331
1332         cmdiocb = (struct lpfc_iocbq *) arg;
1333         rspiocb = cmdiocb->context_un.rsp_iocb;
1334         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1335
1336         irsp = &rspiocb->iocb;
1337         if (irsp->ulpStatus) {
1338                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1339                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1340                 return ndlp->nlp_state;
1341         }
1342
1343         /* Check out PRLI rsp */
1344         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1345         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1346         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1347             (npr->prliType == PRLI_FCP_TYPE)) {
1348                 if (npr->initiatorFunc)
1349                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1350                 if (npr->targetFunc)
1351                         ndlp->nlp_type |= NLP_FCP_TARGET;
1352                 if (npr->Retry)
1353                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1354         }
1355         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1356             (vport->port_type == LPFC_NPIV_PORT) &&
1357              phba->cfg_vport_restrict_login) {
1358                 spin_lock_irq(shost->host_lock);
1359                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1360                 spin_unlock_irq(shost->host_lock);
1361                 lpfc_issue_els_logo(vport, ndlp, 0);
1362
1363                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1364                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1365                 return ndlp->nlp_state;
1366         }
1367
1368         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1369         if (ndlp->nlp_type & NLP_FCP_TARGET)
1370                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1371         else
1372                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1373         return ndlp->nlp_state;
1374 }
1375
1376 /*! lpfc_device_rm_prli_issue
1377  *
1378  * \pre
1379  * \post
1380  * \param   phba
1381  * \param   ndlp
1382  * \param   arg
1383  * \param   evt
1384  * \return  uint32_t
1385  *
1386  * \b Description:
1387  *    This routine is envoked when we a request to remove a nport we are in the
1388  *    process of PRLIing. We should software abort outstanding prli, unreg
1389  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1390  *    on plogi list so it can be freed when LOGO completes.
1391  *
1392  */
1393
1394 static uint32_t
1395 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1396                           void *arg, uint32_t evt)
1397 {
1398         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1399
1400         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1401                 spin_lock_irq(shost->host_lock);
1402                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1403                 spin_unlock_irq(shost->host_lock);
1404                 return ndlp->nlp_state;
1405         } else {
1406                 /* software abort outstanding PLOGI */
1407                 lpfc_els_abort(vport->phba, ndlp);
1408
1409                 lpfc_drop_node(vport, ndlp);
1410                 return NLP_STE_FREED_NODE;
1411         }
1412 }
1413
1414
1415 /*! lpfc_device_recov_prli_issue
1416  *
1417  * \pre
1418  * \post
1419  * \param   phba
1420  * \param   ndlp
1421  * \param   arg
1422  * \param   evt
1423  * \return  uint32_t
1424  *
1425  * \b Description:
1426  *    The routine is envoked when the state of a device is unknown, like
1427  *    during a link down. We should remove the nodelist entry from the
1428  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1429  *    outstanding PRLI command, then free the node entry.
1430  */
1431 static uint32_t
1432 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1433                              struct lpfc_nodelist *ndlp,
1434                              void *arg,
1435                              uint32_t evt)
1436 {
1437         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1438         struct lpfc_hba  *phba = vport->phba;
1439
1440         /* Don't do anything that will mess up processing of the
1441          * previous RSCN.
1442          */
1443         if (vport->fc_flag & FC_RSCN_DEFERRED)
1444                 return ndlp->nlp_state;
1445
1446         /* software abort outstanding PRLI */
1447         lpfc_els_abort(phba, ndlp);
1448
1449         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1450         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1451         spin_lock_irq(shost->host_lock);
1452         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1453         spin_unlock_irq(shost->host_lock);
1454         lpfc_disc_set_adisc(vport, ndlp);
1455         return ndlp->nlp_state;
1456 }
1457
1458 static uint32_t
1459 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1460                           void *arg, uint32_t evt)
1461 {
1462         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1463
1464         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1465         return ndlp->nlp_state;
1466 }
1467
1468 static uint32_t
1469 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1470                          void *arg, uint32_t evt)
1471 {
1472         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1473
1474         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1475         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1476         return ndlp->nlp_state;
1477 }
1478
1479 static uint32_t
1480 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1481                          void *arg, uint32_t evt)
1482 {
1483         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1484
1485         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1486         return ndlp->nlp_state;
1487 }
1488
1489 static uint32_t
1490 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1491                            void *arg, uint32_t evt)
1492 {
1493         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1494
1495         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1496         return ndlp->nlp_state;
1497 }
1498
1499 static uint32_t
1500 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1501                          void *arg, uint32_t evt)
1502 {
1503         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1504
1505         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1506         return ndlp->nlp_state;
1507 }
1508
1509 static uint32_t
1510 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1511                              struct lpfc_nodelist *ndlp,
1512                              void *arg,
1513                              uint32_t evt)
1514 {
1515         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1516
1517         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1518         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1519         spin_lock_irq(shost->host_lock);
1520         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1521         spin_unlock_irq(shost->host_lock);
1522         lpfc_disc_set_adisc(vport, ndlp);
1523
1524         return ndlp->nlp_state;
1525 }
1526
1527 static uint32_t
1528 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1529                            void *arg, uint32_t evt)
1530 {
1531         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1532
1533         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1534         return ndlp->nlp_state;
1535 }
1536
1537 static uint32_t
1538 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1539                           void *arg, uint32_t evt)
1540 {
1541         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1542
1543         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1544         return ndlp->nlp_state;
1545 }
1546
1547 static uint32_t
1548 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1549                           void *arg, uint32_t evt)
1550 {
1551         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1552
1553         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1554         return ndlp->nlp_state;
1555 }
1556
1557 static uint32_t
1558 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1559                             struct lpfc_nodelist *ndlp,
1560                             void *arg, uint32_t evt)
1561 {
1562         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1563
1564         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1565         return ndlp->nlp_state;
1566 }
1567
1568 static uint32_t
1569 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1570                           void *arg, uint32_t evt)
1571 {
1572         struct lpfc_hba  *phba = vport->phba;
1573         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1574
1575         /* flush the target */
1576         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1577                             ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1578
1579         /* Treat like rcv logo */
1580         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1581         return ndlp->nlp_state;
1582 }
1583
1584 static uint32_t
1585 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1586                               struct lpfc_nodelist *ndlp,
1587                               void *arg,
1588                               uint32_t evt)
1589 {
1590         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1591
1592         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1593         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1594         spin_lock_irq(shost->host_lock);
1595         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1596         spin_unlock_irq(shost->host_lock);
1597         lpfc_disc_set_adisc(vport, ndlp);
1598         return ndlp->nlp_state;
1599 }
1600
1601 static uint32_t
1602 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1603                         void *arg, uint32_t evt)
1604 {
1605         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1606         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1607
1608         /* Ignore PLOGI if we have an outstanding LOGO */
1609         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1610                 return ndlp->nlp_state;
1611         }
1612
1613         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1614                 spin_lock_irq(shost->host_lock);
1615                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1616                 spin_unlock_irq(shost->host_lock);
1617                 return ndlp->nlp_state;
1618         }
1619
1620         /* send PLOGI immediately, move to PLOGI issue state */
1621         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1622                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1623                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1624                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1625         }
1626
1627         return ndlp->nlp_state;
1628 }
1629
1630 static uint32_t
1631 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1632                        void *arg, uint32_t evt)
1633 {
1634         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1635         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1636         struct ls_rjt     stat;
1637
1638         memset(&stat, 0, sizeof (struct ls_rjt));
1639         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1640         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1641         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp);
1642
1643         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1644                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1645                         spin_lock_irq(shost->host_lock);
1646                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1647                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1648                         spin_unlock_irq(shost->host_lock);
1649                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1650                         lpfc_issue_els_adisc(vport, ndlp, 0);
1651                 } else {
1652                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1653                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1654                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1655                 }
1656         }
1657         return ndlp->nlp_state;
1658 }
1659
1660 static uint32_t
1661 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1662                        void *arg, uint32_t evt)
1663 {
1664         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1665
1666         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1667         return ndlp->nlp_state;
1668 }
1669
1670 static uint32_t
1671 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1672                          void *arg, uint32_t evt)
1673 {
1674         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1675
1676         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1677
1678         /*
1679          * Do not start discovery if discovery is about to start
1680          * or discovery in progress for this node. Starting discovery
1681          * here will affect the counting of discovery threads.
1682          */
1683         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1684             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1685                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1686                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1687                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1688                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1689                         lpfc_issue_els_adisc(vport, ndlp, 0);
1690                 } else {
1691                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1692                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1693                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1694                 }
1695         }
1696         return ndlp->nlp_state;
1697 }
1698
1699 static uint32_t
1700 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1701                        void *arg, uint32_t evt)
1702 {
1703         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1704         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1705
1706         spin_lock_irq(shost->host_lock);
1707         ndlp->nlp_flag |= NLP_LOGO_ACC;
1708         spin_unlock_irq(shost->host_lock);
1709
1710         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1711
1712         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1713                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1714                 spin_lock_irq(shost->host_lock);
1715                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1716                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1717                 spin_unlock_irq(shost->host_lock);
1718                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1719         } else {
1720                 spin_lock_irq(shost->host_lock);
1721                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1722                 spin_unlock_irq(shost->host_lock);
1723         }
1724         return ndlp->nlp_state;
1725 }
1726
1727 static uint32_t
1728 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1729                          void *arg, uint32_t evt)
1730 {
1731         struct lpfc_iocbq *cmdiocb, *rspiocb;
1732         IOCB_t *irsp;
1733
1734         cmdiocb = (struct lpfc_iocbq *) arg;
1735         rspiocb = cmdiocb->context_un.rsp_iocb;
1736
1737         irsp = &rspiocb->iocb;
1738         if (irsp->ulpStatus) {
1739                 lpfc_drop_node(vport, ndlp);
1740                 return NLP_STE_FREED_NODE;
1741         }
1742         return ndlp->nlp_state;
1743 }
1744
1745 static uint32_t
1746 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1747                         void *arg, uint32_t evt)
1748 {
1749         struct lpfc_iocbq *cmdiocb, *rspiocb;
1750         IOCB_t *irsp;
1751
1752         cmdiocb = (struct lpfc_iocbq *) arg;
1753         rspiocb = cmdiocb->context_un.rsp_iocb;
1754
1755         irsp = &rspiocb->iocb;
1756         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1757                 lpfc_drop_node(vport, ndlp);
1758                 return NLP_STE_FREED_NODE;
1759         }
1760         return ndlp->nlp_state;
1761 }
1762
1763 static uint32_t
1764 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1765                         void *arg, uint32_t evt)
1766 {
1767         lpfc_unreg_rpi(vport, ndlp);
1768         /* This routine does nothing, just return the current state */
1769         return ndlp->nlp_state;
1770 }
1771
1772 static uint32_t
1773 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1774                          void *arg, uint32_t evt)
1775 {
1776         struct lpfc_iocbq *cmdiocb, *rspiocb;
1777         IOCB_t *irsp;
1778
1779         cmdiocb = (struct lpfc_iocbq *) arg;
1780         rspiocb = cmdiocb->context_un.rsp_iocb;
1781
1782         irsp = &rspiocb->iocb;
1783         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1784                 lpfc_drop_node(vport, ndlp);
1785                 return NLP_STE_FREED_NODE;
1786         }
1787         return ndlp->nlp_state;
1788 }
1789
1790 static uint32_t
1791 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1792                             struct lpfc_nodelist *ndlp,
1793                             void *arg, uint32_t evt)
1794 {
1795         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1796         MAILBOX_t    *mb = &pmb->mb;
1797
1798         if (!mb->mbxStatus)
1799                 ndlp->nlp_rpi = mb->un.varWords[0];
1800         else {
1801                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1802                         lpfc_drop_node(vport, ndlp);
1803                         return NLP_STE_FREED_NODE;
1804                 }
1805         }
1806         return ndlp->nlp_state;
1807 }
1808
1809 static uint32_t
1810 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1811                         void *arg, uint32_t evt)
1812 {
1813         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1814
1815         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1816                 spin_lock_irq(shost->host_lock);
1817                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1818                 spin_unlock_irq(shost->host_lock);
1819                 return ndlp->nlp_state;
1820         }
1821         lpfc_drop_node(vport, ndlp);
1822         return NLP_STE_FREED_NODE;
1823 }
1824
1825 static uint32_t
1826 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1827                            void *arg, uint32_t evt)
1828 {
1829         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1830
1831         /* Don't do anything that will mess up processing of the
1832          * previous RSCN.
1833          */
1834         if (vport->fc_flag & FC_RSCN_DEFERRED)
1835                 return ndlp->nlp_state;
1836
1837         spin_lock_irq(shost->host_lock);
1838         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1839         spin_unlock_irq(shost->host_lock);
1840         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1841                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1842         }
1843         return ndlp->nlp_state;
1844 }
1845
1846
1847 /* This next section defines the NPort Discovery State Machine */
1848
1849 /* There are 4 different double linked lists nodelist entries can reside on.
1850  * The plogi list and adisc list are used when Link Up discovery or RSCN
1851  * processing is needed. Each list holds the nodes that we will send PLOGI
1852  * or ADISC on. These lists will keep track of what nodes will be effected
1853  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1854  * The unmapped_list will contain all nodes that we have successfully logged
1855  * into at the Fibre Channel level. The mapped_list will contain all nodes
1856  * that are mapped FCP targets.
1857  */
1858 /*
1859  * The bind list is a list of undiscovered (potentially non-existent) nodes
1860  * that we have saved binding information on. This information is used when
1861  * nodes transition from the unmapped to the mapped list.
1862  */
1863 /* For UNUSED_NODE state, the node has just been allocated .
1864  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1865  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1866  * and put on the unmapped list. For ADISC processing, the node is taken off
1867  * the ADISC list and placed on either the mapped or unmapped list (depending
1868  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1869  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1870  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1871  * node, the node is taken off the unmapped list. The binding list is checked
1872  * for a valid binding, or a binding is automatically assigned. If binding
1873  * assignment is unsuccessful, the node is left on the unmapped list. If
1874  * binding assignment is successful, the associated binding list entry (if
1875  * any) is removed, and the node is placed on the mapped list.
1876  */
1877 /*
1878  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1879  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1880  * expire, all effected nodes will receive a DEVICE_RM event.
1881  */
1882 /*
1883  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1884  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1885  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1886  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1887  * we will first process the ADISC list.  32 entries are processed initially and
1888  * ADISC is initited for each one.  Completions / Events for each node are
1889  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1890  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1891  * waiting, and the ADISC list count is identically 0, then we are done. For
1892  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1893  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1894  * list.  32 entries are processed initially and PLOGI is initited for each one.
1895  * Completions / Events for each node are funnelled thru the state machine.  As
1896  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1897  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1898  * indentically 0, then we are done. We have now completed discovery / RSCN
1899  * handling. Upon completion, ALL nodes should be on either the mapped or
1900  * unmapped lists.
1901  */
1902
1903 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1904      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1905         /* Action routine                  Event       Current State  */
1906         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1907         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1908         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1909         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1910         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1911         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1912         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1913         lpfc_disc_illegal,              /* CMPL_PRLI       */
1914         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1915         lpfc_disc_illegal,              /* CMPL_ADISC      */
1916         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1917         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1918         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1919
1920         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1921         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
1922         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1923         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1924         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1925         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1926         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1927         lpfc_disc_illegal,              /* CMPL_PRLI       */
1928         lpfc_disc_illegal,              /* CMPL_LOGO       */
1929         lpfc_disc_illegal,              /* CMPL_ADISC      */
1930         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1931         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1932         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1933
1934         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1935         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1936         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1937         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1938         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1939         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1940         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1941         lpfc_disc_illegal,              /* CMPL_PRLI       */
1942         lpfc_disc_illegal,              /* CMPL_LOGO       */
1943         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1944         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1945         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1946         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1947
1948         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1949         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1950         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1951         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1952         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1953         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1954         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1955         lpfc_disc_illegal,              /* CMPL_PRLI       */
1956         lpfc_disc_illegal,              /* CMPL_LOGO       */
1957         lpfc_disc_illegal,              /* CMPL_ADISC      */
1958         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1959         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1960         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1961
1962         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1963         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1964         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1965         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1966         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1967         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1968         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1969         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1970         lpfc_disc_illegal,              /* CMPL_LOGO       */
1971         lpfc_disc_illegal,              /* CMPL_ADISC      */
1972         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1973         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1974         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1975
1976         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1977         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1978         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1979         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1980         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1981         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1982         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1983         lpfc_disc_illegal,              /* CMPL_PRLI       */
1984         lpfc_disc_illegal,              /* CMPL_LOGO       */
1985         lpfc_disc_illegal,              /* CMPL_ADISC      */
1986         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1987         lpfc_disc_illegal,              /* DEVICE_RM       */
1988         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1989
1990         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1991         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1992         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1993         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1994         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1995         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1996         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1997         lpfc_disc_illegal,              /* CMPL_PRLI       */
1998         lpfc_disc_illegal,              /* CMPL_LOGO       */
1999         lpfc_disc_illegal,              /* CMPL_ADISC      */
2000         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2001         lpfc_disc_illegal,              /* DEVICE_RM       */
2002         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2003
2004         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2005         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2006         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2007         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2008         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2009         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2010         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2011         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2012         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2013         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2014         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2015         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2016         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2017 };
2018
2019 int
2020 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2021                         void *arg, uint32_t evt)
2022 {
2023         struct lpfc_hba  *phba = vport->phba;
2024         uint32_t cur_state, rc;
2025         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2026                          uint32_t);
2027
2028         lpfc_nlp_get(ndlp);
2029         cur_state = ndlp->nlp_state;
2030
2031         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2032         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2033                         "%d (%d):0211 DSM in event x%x on NPort x%x in "
2034                         "state %d Data: x%x\n",
2035                         phba->brd_no, vport->vpi,
2036                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2037
2038         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2039         rc = (func) (vport, ndlp, arg, evt);
2040
2041         /* DSM out state <rc> on NPort <nlp_DID> */
2042         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2043                         "%d (%d):0212 DSM out state %d on NPort x%x "
2044                         "Data: x%x\n",
2045                         phba->brd_no, vport->vpi,
2046                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2047
2048         lpfc_nlp_put(ndlp);
2049
2050         return rc;
2051 }