git.oblomov.eu Git - linux-2.6/blob - 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         IOCB_t *cmd;
 196
 197         /* Abort outstanding I/O on NPort <nlp_DID> */
 198         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 199                          "0205 Abort outstanding I/O on NPort x%x "
 200                          "Data: x%x x%x x%x\n",
 201                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 202                          ndlp->nlp_rpi);
 203
 204         lpfc_fabric_abort_nport(ndlp);
 205
 206         /* First check the txq */
 207         spin_lock_irq(&phba->hbalock);
 208         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 209                 /* Check to see if iocb matches the nport we are looking for */
 210                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 211                         /* It matches, so deque and call compl with anp 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 for */
 220                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 221                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 222                 }
 223         }
 224         spin_unlock_irq(&phba->hbalock);
 225
 226         while (!list_empty(&completions)) {
 227                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
 228                 cmd = &iocb->iocb;
 229                 list_del_init(&iocb->list);
 230
 231                 if (!iocb->iocb_cmpl)
 232                         lpfc_sli_release_iocbq(phba, iocb);
 233                 else {
 234                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 235                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 236                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 237                 }
 238         }
 239         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 240         return 0;
 241 }
 242
 243 static int
 244 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 245                struct lpfc_iocbq *cmdiocb)
 246 {
 247         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 248         struct lpfc_hba    *phba = vport->phba;
 249         struct lpfc_dmabuf *pcmd;
 250         uint32_t *lp;
 251         IOCB_t *icmd;
 252         struct serv_parm *sp;
 253         LPFC_MBOXQ_t *mbox;
 254         struct ls_rjt stat;
 255         int rc;
 256
 257         memset(&stat, 0, sizeof (struct ls_rjt));
 258         if (vport->port_state <= LPFC_FLOGI) {
 259                 /* Before responding to PLOGI, check for pt2pt mode.
 260                  * If we are pt2pt, with an outstanding FLOGI, abort
 261                  * the FLOGI and resend it first.
 262                  */
 263                 if (vport->fc_flag & FC_PT2PT) {
 264                          lpfc_els_abort_flogi(phba);
 265                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 266                                 /* If the other side is supposed to initiate
 267                                  * the PLOGI anyway, just ACC it now and
 268                                  * move on with discovery.
 269                                  */
 270                                 phba->fc_edtov = FF_DEF_EDTOV;
 271                                 phba->fc_ratov = FF_DEF_RATOV;
 272                                 /* Start discovery - this should just do
 273                                    CLEAR_LA */
 274                                 lpfc_disc_start(vport);
 275                         } else
 276                                 lpfc_initial_flogi(vport);
 277                 } else {
 278                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 279                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 280                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 281                                             ndlp, NULL);
 282                         return 0;
 283                 }
 284         }
 285         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 286         lp = (uint32_t *) pcmd->virt;
 287         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 288         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 289                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 290                                  "0140 PLOGI Reject: invalid nname\n");
 291                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 292                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 293                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 294                         NULL);
 295                 return 0;
 296         }
 297         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 298                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 299                                  "0141 PLOGI Reject: invalid pname\n");
 300                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 301                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 302                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 303                         NULL);
 304                 return 0;
 305         }
 306         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
 307                 /* Reject this request because invalid parameters */
 308                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 309                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 310                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 311                         NULL);
 312                 return 0;
 313         }
 314         icmd = &cmdiocb->iocb;
 315
 316         /* PLOGI chkparm OK */
 317         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 318                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 319                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 320                          ndlp->nlp_rpi);
 321
 322         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 323                 ndlp->nlp_fcp_info |= CLASS2;
 324         else
 325                 ndlp->nlp_fcp_info |= CLASS3;
 326
 327         ndlp->nlp_class_sup = 0;
 328         if (sp->cls1.classValid)
 329                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 330         if (sp->cls2.classValid)
 331                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 332         if (sp->cls3.classValid)
 333                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 334         if (sp->cls4.classValid)
 335                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 336         ndlp->nlp_maxframe =
 337                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 338
 339         /* no need to reg_login if we are already in one of these states */
 340         switch (ndlp->nlp_state) {
 341         case  NLP_STE_NPR_NODE:
 342                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 343                         break;
 344         case  NLP_STE_REG_LOGIN_ISSUE:
 345         case  NLP_STE_PRLI_ISSUE:
 346         case  NLP_STE_UNMAPPED_NODE:
 347         case  NLP_STE_MAPPED_NODE:
 348                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 349                 return 1;
 350         }
 351
 352         if ((vport->fc_flag & FC_PT2PT) &&
 353             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 354                 /* rcv'ed PLOGI decides what our NPortId will be */
 355                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 356                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 357                 if (mbox == NULL)
 358                         goto out;
 359                 lpfc_config_link(phba, mbox);
 360                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 361                 mbox->vport = vport;
 362                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 363                 if (rc == MBX_NOT_FINISHED) {
 364                         mempool_free(mbox, phba->mbox_mem_pool);
 365                         goto out;
 366                 }
 367
 368                 lpfc_can_disctmo(vport);
 369         }
 370         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 371         if (!mbox)
 372                 goto out;
 373
 374         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 375                             (uint8_t *) sp, mbox, 0);
 376         if (rc) {
 377                 mempool_free(mbox, phba->mbox_mem_pool);
 378                 goto out;
 379         }
 380
 381         /* ACC PLOGI rsp command needs to execute first,
 382          * queue this mbox command to be processed later.
 383          */
 384         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 385         /*
 386          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 387          * command issued in lpfc_cmpl_els_acc().
 388          */
 389         mbox->vport = vport;
 390         spin_lock_irq(shost->host_lock);
 391         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 392         spin_unlock_irq(shost->host_lock);
 393
 394         /*
 395          * If there is an outstanding PLOGI issued, abort it before
 396          * sending ACC rsp for received PLOGI. If pending plogi
 397          * is not canceled here, the plogi will be rejected by
 398          * remote port and will be retried. On a configuration with
 399          * single discovery thread, this will cause a huge delay in
 400          * discovery. Also this will cause multiple state machines
 401          * running in parallel for this node.
 402          */
 403         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 404                 /* software abort outstanding PLOGI */
 405                 lpfc_els_abort(phba, ndlp);
 406         }
 407
 408         if ((vport->port_type == LPFC_NPIV_PORT &&
 409              vport->cfg_restrict_login)) {
 410
 411                 /* In order to preserve RPIs, we want to cleanup
 412                  * the default RPI the firmware created to rcv
 413                  * this ELS request. The only way to do this is
 414                  * to register, then unregister the RPI.
 415                  */
 416                 spin_lock_irq(shost->host_lock);
 417                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 418                 spin_unlock_irq(shost->host_lock);
 419                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 420                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 421                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 422                         ndlp, mbox);
 423                 return 1;
 424         }
 425         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 426         return 1;
 427 out:
 428         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 429         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 430         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 431         return 0;
 432 }
 433
 434 static int
 435 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 436                 struct lpfc_iocbq *cmdiocb)
 437 {
 438         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 439         struct lpfc_dmabuf *pcmd;
 440         struct serv_parm   *sp;
 441         struct lpfc_name   *pnn, *ppn;
 442         struct ls_rjt stat;
 443         ADISC *ap;
 444         IOCB_t *icmd;
 445         uint32_t *lp;
 446         uint32_t cmd;
 447
 448         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 449         lp = (uint32_t *) pcmd->virt;
 450
 451         cmd = *lp++;
 452         if (cmd == ELS_CMD_ADISC) {
 453                 ap = (ADISC *) lp;
 454                 pnn = (struct lpfc_name *) & ap->nodeName;
 455                 ppn = (struct lpfc_name *) & ap->portName;
 456         } else {
 457                 sp = (struct serv_parm *) lp;
 458                 pnn = (struct lpfc_name *) & sp->nodeName;
 459                 ppn = (struct lpfc_name *) & sp->portName;
 460         }
 461
 462         icmd = &cmdiocb->iocb;
 463         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 464                 if (cmd == ELS_CMD_ADISC) {
 465                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 466                 } else {
 467                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 468                                          NULL);
 469                 }
 470                 return 1;
 471         }
 472         /* Reject this request because invalid parameters */
 473         stat.un.b.lsRjtRsvd0 = 0;
 474         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 475         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 476         stat.un.b.vendorUnique = 0;
 477         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 478
 479         /* 1 sec timeout */
 480         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 481
 482         spin_lock_irq(shost->host_lock);
 483         ndlp->nlp_flag |= NLP_DELAY_TMO;
 484         spin_unlock_irq(shost->host_lock);
 485         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 486         ndlp->nlp_prev_state = ndlp->nlp_state;
 487         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 488         return 0;
 489 }
 490
 491 static int
 492 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 493               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 494 {
 495         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 496
 497         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 498         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 499          * PLOGIs during LOGO storms from a device.
 500          */
 501         spin_lock_irq(shost->host_lock);
 502         ndlp->nlp_flag |= NLP_LOGO_ACC;
 503         spin_unlock_irq(shost->host_lock);
 504         if (els_cmd == ELS_CMD_PRLO)
 505                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 506         else
 507                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 508
 509         if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 510              ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 511               !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 512             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 513                 /* Only try to re-login if this is NOT a Fabric Node */
 514                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 515                 spin_lock_irq(shost->host_lock);
 516                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 517                 spin_unlock_irq(shost->host_lock);
 518
 519                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 520         }
 521         ndlp->nlp_prev_state = ndlp->nlp_state;
 522         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 523
 524         spin_lock_irq(shost->host_lock);
 525         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 526         spin_unlock_irq(shost->host_lock);
 527         /* The driver has to wait until the ACC completes before it continues
 528          * processing the LOGO.  The action will resume in
 529          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 530          * unreg_login, the driver waits so the ACC does not get aborted.
 531          */
 532         return 0;
 533 }
 534
 535 static void
 536 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 537               struct lpfc_iocbq *cmdiocb)
 538 {
 539         struct lpfc_dmabuf *pcmd;
 540         uint32_t *lp;
 541         PRLI *npr;
 542         struct fc_rport *rport = ndlp->rport;
 543         u32 roles;
 544
 545         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 546         lp = (uint32_t *) pcmd->virt;
 547         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 548
 549         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 550         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 551         if (npr->prliType == PRLI_FCP_TYPE) {
 552                 if (npr->initiatorFunc)
 553                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 554                 if (npr->targetFunc)
 555                         ndlp->nlp_type |= NLP_FCP_TARGET;
 556                 if (npr->Retry)
 557                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 558         }
 559         if (rport) {
 560                 /* We need to update the rport role values */
 561                 roles = FC_RPORT_ROLE_UNKNOWN;
 562                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 563                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 564                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 565                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 566
 567                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 568                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 569                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 570
 571                 fc_remote_port_rolechg(rport, roles);
 572         }
 573 }
 574
 575 static uint32_t
 576 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 577 {
 578         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 579
 580         if (!ndlp->nlp_rpi) {
 581                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 582                 return 0;
 583         }
 584
 585         if (!(vport->fc_flag & FC_PT2PT)) {
 586                 /* Check config parameter use-adisc or FCP-2 */
 587                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 588                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 589                         spin_lock_irq(shost->host_lock);
 590                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 591                         spin_unlock_irq(shost->host_lock);
 592                         return 1;
 593                 }
 594         }
 595         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 596         lpfc_unreg_rpi(vport, ndlp);
 597         return 0;
 598 }
 599
 600 static uint32_t
 601 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 602                   void *arg, uint32_t evt)
 603 {
 604         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 605                          "0271 Illegal State Transition: node x%x "
 606                          "event x%x, state x%x Data: x%x x%x\n",
 607                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 608                          ndlp->nlp_flag);
 609         return ndlp->nlp_state;
 610 }
 611
 612 static uint32_t
 613 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 614                   void *arg, uint32_t evt)
 615 {
 616         /* This transition is only legal if we previously
 617          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 618          * working on the same NPortID, do nothing for this thread
 619          * to stop it.
 620          */
 621         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 622                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 623                          "0272 Illegal State Transition: node x%x "
 624                          "event x%x, state x%x Data: x%x x%x\n",
 625                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 626                          ndlp->nlp_flag);
 627         }
 628         return ndlp->nlp_state;
 629 }
 630
 631 /* Start of Discovery State Machine routines */
 632
 633 static uint32_t
 634 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 635                            void *arg, uint32_t evt)
 636 {
 637         struct lpfc_iocbq *cmdiocb;
 638
 639         cmdiocb = (struct lpfc_iocbq *) arg;
 640
 641         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 642                 return ndlp->nlp_state;
 643         }
 644         return NLP_STE_FREED_NODE;
 645 }
 646
 647 static uint32_t
 648 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 649                          void *arg, uint32_t evt)
 650 {
 651         lpfc_issue_els_logo(vport, ndlp, 0);
 652         return ndlp->nlp_state;
 653 }
 654
 655 static uint32_t
 656 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 657                           void *arg, uint32_t evt)
 658 {
 659         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 660         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 661
 662         spin_lock_irq(shost->host_lock);
 663         ndlp->nlp_flag |= NLP_LOGO_ACC;
 664         spin_unlock_irq(shost->host_lock);
 665         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 666
 667         return ndlp->nlp_state;
 668 }
 669
 670 static uint32_t
 671 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 672                            void *arg, uint32_t evt)
 673 {
 674         return NLP_STE_FREED_NODE;
 675 }
 676
 677 static uint32_t
 678 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 679                            void *arg, uint32_t evt)
 680 {
 681         return NLP_STE_FREED_NODE;
 682 }
 683
 684 static uint32_t
 685 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 686                            void *arg, uint32_t evt)
 687 {
 688         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 689         struct lpfc_hba   *phba = vport->phba;
 690         struct lpfc_iocbq *cmdiocb = arg;
 691         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 692         uint32_t *lp = (uint32_t *) pcmd->virt;
 693         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 694         struct ls_rjt stat;
 695         int port_cmp;
 696
 697         memset(&stat, 0, sizeof (struct ls_rjt));
 698
 699         /* For a PLOGI, we only accept if our portname is less
 700          * than the remote portname.
 701          */
 702         phba->fc_stat.elsLogiCol++;
 703         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 704                           sizeof(struct lpfc_name));
 705
 706         if (port_cmp >= 0) {
 707                 /* Reject this request because the remote node will accept
 708                    ours */
 709                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 710                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 711                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 712                         NULL);
 713         } else {
 714                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 715                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 716                     (vport->num_disc_nodes)) {
 717                         spin_lock_irq(shost->host_lock);
 718                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 719                         spin_unlock_irq(shost->host_lock);
 720                         /* Check if there are more PLOGIs to be sent */
 721                         lpfc_more_plogi(vport);
 722                         if (vport->num_disc_nodes == 0) {
 723                                 spin_lock_irq(shost->host_lock);
 724                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 725                                 spin_unlock_irq(shost->host_lock);
 726                                 lpfc_can_disctmo(vport);
 727                                 lpfc_end_rscn(vport);
 728                         }
 729                 }
 730         } /* If our portname was less */
 731
 732         return ndlp->nlp_state;
 733 }
 734
 735 static uint32_t
 736 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 737                           void *arg, uint32_t evt)
 738 {
 739         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 740         struct ls_rjt     stat;
 741
 742         memset(&stat, 0, sizeof (struct ls_rjt));
 743         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 744         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 745         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 746         return ndlp->nlp_state;
 747 }
 748
 749 static uint32_t
 750 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 751                           void *arg, uint32_t evt)
 752 {
 753         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 754
 755                                 /* software abort outstanding PLOGI */
 756         lpfc_els_abort(vport->phba, ndlp);
 757
 758         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 759         return ndlp->nlp_state;
 760 }
 761
 762 static uint32_t
 763 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 764                          void *arg, uint32_t evt)
 765 {
 766         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 767         struct lpfc_hba   *phba = vport->phba;
 768         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 769
 770         /* software abort outstanding PLOGI */
 771         lpfc_els_abort(phba, ndlp);
 772
 773         if (evt == NLP_EVT_RCV_LOGO) {
 774                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 775         } else {
 776                 lpfc_issue_els_logo(vport, ndlp, 0);
 777         }
 778
 779         /* Put ndlp in npr state set plogi timer for 1 sec */
 780         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 781         spin_lock_irq(shost->host_lock);
 782         ndlp->nlp_flag |= NLP_DELAY_TMO;
 783         spin_unlock_irq(shost->host_lock);
 784         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 785         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 786         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 787
 788         return ndlp->nlp_state;
 789 }
 790
 791 static uint32_t
 792 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 793                             struct lpfc_nodelist *ndlp,
 794                             void *arg,
 795                             uint32_t evt)
 796 {
 797         struct lpfc_hba    *phba = vport->phba;
 798         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 799         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 800         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 801         uint32_t *lp;
 802         IOCB_t *irsp;
 803         struct serv_parm *sp;
 804         LPFC_MBOXQ_t *mbox;
 805
 806         cmdiocb = (struct lpfc_iocbq *) arg;
 807         rspiocb = cmdiocb->context_un.rsp_iocb;
 808
 809         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 810                 /* Recovery from PLOGI collision logic */
 811                 return ndlp->nlp_state;
 812         }
 813
 814         irsp = &rspiocb->iocb;
 815
 816         if (irsp->ulpStatus)
 817                 goto out;
 818
 819         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 820
 821         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 822
 823         lp = (uint32_t *) prsp->virt;
 824         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 825
 826         /* Some switches have FDMI servers returning 0 for WWN */
 827         if ((ndlp->nlp_DID != FDMI_DID) &&
 828                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
 829                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
 830                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 831                                  "0142 PLOGI RSP: Invalid WWN.\n");
 832                 goto out;
 833         }
 834         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 835                 goto out;
 836         /* PLOGI chkparm OK */
 837         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 838                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 839                          ndlp->nlp_DID, ndlp->nlp_state,
 840                          ndlp->nlp_flag, ndlp->nlp_rpi);
 841         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 842                 ndlp->nlp_fcp_info |= CLASS2;
 843         else
 844                 ndlp->nlp_fcp_info |= CLASS3;
 845
 846         ndlp->nlp_class_sup = 0;
 847         if (sp->cls1.classValid)
 848                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 849         if (sp->cls2.classValid)
 850                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 851         if (sp->cls3.classValid)
 852                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 853         if (sp->cls4.classValid)
 854                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 855         ndlp->nlp_maxframe =
 856                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 857
 858         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 859         if (!mbox) {
 860                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 861                         "0133 PLOGI: no memory for reg_login "
 862                         "Data: x%x x%x x%x x%x\n",
 863                         ndlp->nlp_DID, ndlp->nlp_state,
 864                         ndlp->nlp_flag, ndlp->nlp_rpi);
 865                 goto out;
 866         }
 867
 868         lpfc_unreg_rpi(vport, ndlp);
 869
 870         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 871                            (uint8_t *) sp, mbox, 0) == 0) {
 872                 switch (ndlp->nlp_DID) {
 873                 case NameServer_DID:
 874                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 875                         break;
 876                 case FDMI_DID:
 877                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 878                         break;
 879                 default:
 880                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 881                 }
 882                 mbox->context2 = lpfc_nlp_get(ndlp);
 883                 mbox->vport = vport;
 884                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 885                     != MBX_NOT_FINISHED) {
 886                         lpfc_nlp_set_state(vport, ndlp,
 887                                            NLP_STE_REG_LOGIN_ISSUE);
 888                         return ndlp->nlp_state;
 889                 }
 890                 /* decrement node reference count to the failed mbox
 891                  * command
 892                  */
 893                 lpfc_nlp_put(ndlp);
 894                 mp = (struct lpfc_dmabuf *) mbox->context1;
 895                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 896                 kfree(mp);
 897                 mempool_free(mbox, phba->mbox_mem_pool);
 898
 899                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 900                                  "0134 PLOGI: cannot issue reg_login "
 901                                  "Data: x%x x%x x%x x%x\n",
 902                                  ndlp->nlp_DID, ndlp->nlp_state,
 903                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 904         } else {
 905                 mempool_free(mbox, phba->mbox_mem_pool);
 906
 907                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 908                                  "0135 PLOGI: cannot format reg_login "
 909                                  "Data: x%x x%x x%x x%x\n",
 910                                  ndlp->nlp_DID, ndlp->nlp_state,
 911                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 912         }
 913
 914
 915 out:
 916         if (ndlp->nlp_DID == NameServer_DID) {
 917                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 918                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 919                                  "0261 Cannot Register NameServer login\n");
 920         }
 921
 922         spin_lock_irq(shost->host_lock);
 923         ndlp->nlp_flag |= NLP_DEFER_RM;
 924         spin_unlock_irq(shost->host_lock);
 925         return NLP_STE_FREED_NODE;
 926 }
 927
 928 static uint32_t
 929 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 930                            void *arg, uint32_t evt)
 931 {
 932         return ndlp->nlp_state;
 933 }
 934
 935 static uint32_t
 936 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
 937         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
 938 {
 939         return ndlp->nlp_state;
 940 }
 941
 942 static uint32_t
 943 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 944                            void *arg, uint32_t evt)
 945 {
 946         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 947
 948         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 949                 spin_lock_irq(shost->host_lock);
 950                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 951                 spin_unlock_irq(shost->host_lock);
 952                 return ndlp->nlp_state;
 953         } else {
 954                 /* software abort outstanding PLOGI */
 955                 lpfc_els_abort(vport->phba, ndlp);
 956
 957                 lpfc_drop_node(vport, ndlp);
 958                 return NLP_STE_FREED_NODE;
 959         }
 960 }
 961
 962 static uint32_t
 963 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 964                               struct lpfc_nodelist *ndlp,
 965                               void *arg,
 966                               uint32_t evt)
 967 {
 968         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 969         struct lpfc_hba  *phba = vport->phba;
 970
 971         /* Don't do anything that will mess up processing of the
 972          * previous RSCN.
 973          */
 974         if (vport->fc_flag & FC_RSCN_DEFERRED)
 975                 return ndlp->nlp_state;
 976
 977         /* software abort outstanding PLOGI */
 978         lpfc_els_abort(phba, ndlp);
 979
 980         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 981         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 982         spin_lock_irq(shost->host_lock);
 983         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 984         spin_unlock_irq(shost->host_lock);
 985
 986         return ndlp->nlp_state;
 987 }
 988
 989 static uint32_t
 990 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 991                            void *arg, uint32_t evt)
 992 {
 993         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 994         struct lpfc_hba   *phba = vport->phba;
 995         struct lpfc_iocbq *cmdiocb;
 996
 997         /* software abort outstanding ADISC */
 998         lpfc_els_abort(phba, ndlp);
 999
1000         cmdiocb = (struct lpfc_iocbq *) arg;
1001
1002         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1003                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1004                         spin_lock_irq(shost->host_lock);
1005                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1006                         spin_unlock_irq(shost->host_lock);
1007                         if (vport->num_disc_nodes)
1008                                 lpfc_more_adisc(vport);
1009                 }
1010                 return ndlp->nlp_state;
1011         }
1012         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1013         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1014         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1015
1016         return ndlp->nlp_state;
1017 }
1018
1019 static uint32_t
1020 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1021                           void *arg, uint32_t evt)
1022 {
1023         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1024
1025         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1026         return ndlp->nlp_state;
1027 }
1028
1029 static uint32_t
1030 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1031                           void *arg, uint32_t evt)
1032 {
1033         struct lpfc_hba *phba = vport->phba;
1034         struct lpfc_iocbq *cmdiocb;
1035
1036         cmdiocb = (struct lpfc_iocbq *) arg;
1037
1038         /* software abort outstanding ADISC */
1039         lpfc_els_abort(phba, ndlp);
1040
1041         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1042         return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1047                             struct lpfc_nodelist *ndlp,
1048                             void *arg, uint32_t evt)
1049 {
1050         struct lpfc_iocbq *cmdiocb;
1051
1052         cmdiocb = (struct lpfc_iocbq *) arg;
1053
1054         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1055         return ndlp->nlp_state;
1056 }
1057
1058 static uint32_t
1059 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1060                           void *arg, uint32_t evt)
1061 {
1062         struct lpfc_iocbq *cmdiocb;
1063
1064         cmdiocb = (struct lpfc_iocbq *) arg;
1065
1066         /* Treat like rcv logo */
1067         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1068         return ndlp->nlp_state;
1069 }
1070
1071 static uint32_t
1072 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1073                             struct lpfc_nodelist *ndlp,
1074                             void *arg, uint32_t evt)
1075 {
1076         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1077         struct lpfc_hba   *phba = vport->phba;
1078         struct lpfc_iocbq *cmdiocb, *rspiocb;
1079         IOCB_t *irsp;
1080         ADISC *ap;
1081
1082         cmdiocb = (struct lpfc_iocbq *) arg;
1083         rspiocb = cmdiocb->context_un.rsp_iocb;
1084
1085         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1086         irsp = &rspiocb->iocb;
1087
1088         if ((irsp->ulpStatus) ||
1089             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1090                 /* 1 sec timeout */
1091                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1092                 spin_lock_irq(shost->host_lock);
1093                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1094                 spin_unlock_irq(shost->host_lock);
1095                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1096
1097                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1098                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1099
1100                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1101                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1102                 lpfc_unreg_rpi(vport, ndlp);
1103                 return ndlp->nlp_state;
1104         }
1105
1106         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1107                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1108                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1109         } else {
1110                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1111                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1112         }
1113         return ndlp->nlp_state;
1114 }
1115
1116 static uint32_t
1117 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1118                            void *arg, uint32_t evt)
1119 {
1120         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1121
1122         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1123                 spin_lock_irq(shost->host_lock);
1124                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1125                 spin_unlock_irq(shost->host_lock);
1126                 return ndlp->nlp_state;
1127         } else {
1128                 /* software abort outstanding ADISC */
1129                 lpfc_els_abort(vport->phba, ndlp);
1130
1131                 lpfc_drop_node(vport, ndlp);
1132                 return NLP_STE_FREED_NODE;
1133         }
1134 }
1135
1136 static uint32_t
1137 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1138                               struct lpfc_nodelist *ndlp,
1139                               void *arg,
1140                               uint32_t evt)
1141 {
1142         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1143         struct lpfc_hba  *phba = vport->phba;
1144
1145         /* Don't do anything that will mess up processing of the
1146          * previous RSCN.
1147          */
1148         if (vport->fc_flag & FC_RSCN_DEFERRED)
1149                 return ndlp->nlp_state;
1150
1151         /* software abort outstanding ADISC */
1152         lpfc_els_abort(phba, ndlp);
1153
1154         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1155         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1156         spin_lock_irq(shost->host_lock);
1157         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1158         spin_unlock_irq(shost->host_lock);
1159         lpfc_disc_set_adisc(vport, ndlp);
1160         return ndlp->nlp_state;
1161 }
1162
1163 static uint32_t
1164 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1165                               struct lpfc_nodelist *ndlp,
1166                               void *arg,
1167                               uint32_t evt)
1168 {
1169         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1170
1171         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1172         return ndlp->nlp_state;
1173 }
1174
1175 static uint32_t
1176 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1177                              struct lpfc_nodelist *ndlp,
1178                              void *arg,
1179                              uint32_t evt)
1180 {
1181         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1182
1183         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1184         return ndlp->nlp_state;
1185 }
1186
1187 static uint32_t
1188 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1189                              struct lpfc_nodelist *ndlp,
1190                              void *arg,
1191                              uint32_t evt)
1192 {
1193         struct lpfc_hba   *phba = vport->phba;
1194         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1195         LPFC_MBOXQ_t      *mb;
1196         LPFC_MBOXQ_t      *nextmb;
1197         struct lpfc_dmabuf *mp;
1198
1199         cmdiocb = (struct lpfc_iocbq *) arg;
1200
1201         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1202         if ((mb = phba->sli.mbox_active)) {
1203                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1204                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1205                         lpfc_nlp_put(ndlp);
1206                         mb->context2 = NULL;
1207                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1208                 }
1209         }
1210
1211         spin_lock_irq(&phba->hbalock);
1212         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1213                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1214                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1215                         mp = (struct lpfc_dmabuf *) (mb->context1);
1216                         if (mp) {
1217                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1218                                 kfree(mp);
1219                         }
1220                         lpfc_nlp_put(ndlp);
1221                         list_del(&mb->list);
1222                         mempool_free(mb, phba->mbox_mem_pool);
1223                 }
1224         }
1225         spin_unlock_irq(&phba->hbalock);
1226
1227         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1228         return ndlp->nlp_state;
1229 }
1230
1231 static uint32_t
1232 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1233                                struct lpfc_nodelist *ndlp,
1234                                void *arg,
1235                                uint32_t evt)
1236 {
1237         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1238
1239         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1240         return ndlp->nlp_state;
1241 }
1242
1243 static uint32_t
1244 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1245                              struct lpfc_nodelist *ndlp,
1246                              void *arg,
1247                              uint32_t evt)
1248 {
1249         struct lpfc_iocbq *cmdiocb;
1250
1251         cmdiocb = (struct lpfc_iocbq *) arg;
1252         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1253         return ndlp->nlp_state;
1254 }
1255
1256 static uint32_t
1257 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1258                                   struct lpfc_nodelist *ndlp,
1259                                   void *arg,
1260                                   uint32_t evt)
1261 {
1262         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1263         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1264         MAILBOX_t *mb = &pmb->mb;
1265         uint32_t did  = mb->un.varWords[1];
1266
1267         if (mb->mbxStatus) {
1268                 /* RegLogin failed */
1269                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1270                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1271                                 did, mb->mbxStatus, vport->port_state);
1272                 /*
1273                  * If RegLogin failed due to lack of HBA resources do not
1274                  * retry discovery.
1275                  */
1276                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1277                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1278                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1279                         return ndlp->nlp_state;
1280                 }
1281
1282                 /* Put ndlp in npr state set plogi timer for 1 sec */
1283                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1284                 spin_lock_irq(shost->host_lock);
1285                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1286                 spin_unlock_irq(shost->host_lock);
1287                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1288
1289                 lpfc_issue_els_logo(vport, ndlp, 0);
1290                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1291                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1292                 return ndlp->nlp_state;
1293         }
1294
1295         ndlp->nlp_rpi = mb->un.varWords[0];
1296
1297         /* Only if we are not a fabric nport do we issue PRLI */
1298         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1299                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1300                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1301                 lpfc_issue_els_prli(vport, ndlp, 0);
1302         } else {
1303                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1304                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1305         }
1306         return ndlp->nlp_state;
1307 }
1308
1309 static uint32_t
1310 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1311                               struct lpfc_nodelist *ndlp,
1312                               void *arg,
1313                               uint32_t evt)
1314 {
1315         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1316
1317         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1318                 spin_lock_irq(shost->host_lock);
1319                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1320                 spin_unlock_irq(shost->host_lock);
1321                 return ndlp->nlp_state;
1322         } else {
1323                 lpfc_drop_node(vport, ndlp);
1324                 return NLP_STE_FREED_NODE;
1325         }
1326 }
1327
1328 static uint32_t
1329 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1330                                  struct lpfc_nodelist *ndlp,
1331                                  void *arg,
1332                                  uint32_t evt)
1333 {
1334         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1335
1336         /* Don't do anything that will mess up processing of the
1337          * previous RSCN.
1338          */
1339         if (vport->fc_flag & FC_RSCN_DEFERRED)
1340                 return ndlp->nlp_state;
1341
1342         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1343         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1344         spin_lock_irq(shost->host_lock);
1345         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1346         spin_unlock_irq(shost->host_lock);
1347         lpfc_disc_set_adisc(vport, ndlp);
1348         return ndlp->nlp_state;
1349 }
1350
1351 static uint32_t
1352 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1353                           void *arg, uint32_t evt)
1354 {
1355         struct lpfc_iocbq *cmdiocb;
1356
1357         cmdiocb = (struct lpfc_iocbq *) arg;
1358
1359         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1360         return ndlp->nlp_state;
1361 }
1362
1363 static uint32_t
1364 lpfc_rcv_prli_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         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1370         return ndlp->nlp_state;
1371 }
1372
1373 static uint32_t
1374 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1375                          void *arg, uint32_t evt)
1376 {
1377         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1378
1379         /* Software abort outstanding PRLI before sending acc */
1380         lpfc_els_abort(vport->phba, ndlp);
1381
1382         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1383         return ndlp->nlp_state;
1384 }
1385
1386 static uint32_t
1387 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1388                            void *arg, uint32_t evt)
1389 {
1390         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1391
1392         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1393         return ndlp->nlp_state;
1394 }
1395
1396 /* This routine is envoked when we rcv a PRLO request from a nport
1397  * we are logged into.  We should send back a PRLO rsp setting the
1398  * appropriate bits.
1399  * NEXT STATE = PRLI_ISSUE
1400  */
1401 static uint32_t
1402 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1403                          void *arg, uint32_t evt)
1404 {
1405         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1406
1407         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1408         return ndlp->nlp_state;
1409 }
1410
1411 static uint32_t
1412 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1413                           void *arg, uint32_t evt)
1414 {
1415         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1416         struct lpfc_iocbq *cmdiocb, *rspiocb;
1417         struct lpfc_hba   *phba = vport->phba;
1418         IOCB_t *irsp;
1419         PRLI *npr;
1420
1421         cmdiocb = (struct lpfc_iocbq *) arg;
1422         rspiocb = cmdiocb->context_un.rsp_iocb;
1423         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1424
1425         irsp = &rspiocb->iocb;
1426         if (irsp->ulpStatus) {
1427                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1428                     vport->cfg_restrict_login) {
1429                         goto out;
1430                 }
1431                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1432                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1433                 return ndlp->nlp_state;
1434         }
1435
1436         /* Check out PRLI rsp */
1437         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1438         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1439         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1440             (npr->prliType == PRLI_FCP_TYPE)) {
1441                 if (npr->initiatorFunc)
1442                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1443                 if (npr->targetFunc)
1444                         ndlp->nlp_type |= NLP_FCP_TARGET;
1445                 if (npr->Retry)
1446                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1447         }
1448         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1449             (vport->port_type == LPFC_NPIV_PORT) &&
1450              vport->cfg_restrict_login) {
1451 out:
1452                 spin_lock_irq(shost->host_lock);
1453                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1454                 spin_unlock_irq(shost->host_lock);
1455                 lpfc_issue_els_logo(vport, ndlp, 0);
1456
1457                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1458                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1459                 return ndlp->nlp_state;
1460         }
1461
1462         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1463         if (ndlp->nlp_type & NLP_FCP_TARGET)
1464                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1465         else
1466                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1467         return ndlp->nlp_state;
1468 }
1469
1470 /*! lpfc_device_rm_prli_issue
1471  *
1472  * \pre
1473  * \post
1474  * \param   phba
1475  * \param   ndlp
1476  * \param   arg
1477  * \param   evt
1478  * \return  uint32_t
1479  *
1480  * \b Description:
1481  *    This routine is envoked when we a request to remove a nport we are in the
1482  *    process of PRLIing. We should software abort outstanding prli, unreg
1483  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1484  *    on plogi list so it can be freed when LOGO completes.
1485  *
1486  */
1487
1488 static uint32_t
1489 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1490                           void *arg, uint32_t evt)
1491 {
1492         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1493
1494         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1495                 spin_lock_irq(shost->host_lock);
1496                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1497                 spin_unlock_irq(shost->host_lock);
1498                 return ndlp->nlp_state;
1499         } else {
1500                 /* software abort outstanding PLOGI */
1501                 lpfc_els_abort(vport->phba, ndlp);
1502
1503                 lpfc_drop_node(vport, ndlp);
1504                 return NLP_STE_FREED_NODE;
1505         }
1506 }
1507
1508
1509 /*! lpfc_device_recov_prli_issue
1510  *
1511  * \pre
1512  * \post
1513  * \param   phba
1514  * \param   ndlp
1515  * \param   arg
1516  * \param   evt
1517  * \return  uint32_t
1518  *
1519  * \b Description:
1520  *    The routine is envoked when the state of a device is unknown, like
1521  *    during a link down. We should remove the nodelist entry from the
1522  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1523  *    outstanding PRLI command, then free the node entry.
1524  */
1525 static uint32_t
1526 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1527                              struct lpfc_nodelist *ndlp,
1528                              void *arg,
1529                              uint32_t evt)
1530 {
1531         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532         struct lpfc_hba  *phba = vport->phba;
1533
1534         /* Don't do anything that will mess up processing of the
1535          * previous RSCN.
1536          */
1537         if (vport->fc_flag & FC_RSCN_DEFERRED)
1538                 return ndlp->nlp_state;
1539
1540         /* software abort outstanding PRLI */
1541         lpfc_els_abort(phba, ndlp);
1542
1543         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1544         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1545         spin_lock_irq(shost->host_lock);
1546         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1547         spin_unlock_irq(shost->host_lock);
1548         lpfc_disc_set_adisc(vport, ndlp);
1549         return ndlp->nlp_state;
1550 }
1551
1552 static uint32_t
1553 lpfc_rcv_plogi_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_plogi(vport, ndlp, cmdiocb);
1559         return ndlp->nlp_state;
1560 }
1561
1562 static uint32_t
1563 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1564                          void *arg, uint32_t evt)
1565 {
1566         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1567
1568         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1569         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1570         return ndlp->nlp_state;
1571 }
1572
1573 static uint32_t
1574 lpfc_rcv_logo_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_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1580         return ndlp->nlp_state;
1581 }
1582
1583 static uint32_t
1584 lpfc_rcv_padisc_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_rcv_padisc(vport, ndlp, cmdiocb);
1590         return ndlp->nlp_state;
1591 }
1592
1593 static uint32_t
1594 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1595                          void *arg, uint32_t evt)
1596 {
1597         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1598
1599         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1600         return ndlp->nlp_state;
1601 }
1602
1603 static uint32_t
1604 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1605                              struct lpfc_nodelist *ndlp,
1606                              void *arg,
1607                              uint32_t evt)
1608 {
1609         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1610
1611         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1612         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1613         spin_lock_irq(shost->host_lock);
1614         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1615         spin_unlock_irq(shost->host_lock);
1616         lpfc_disc_set_adisc(vport, ndlp);
1617
1618         return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_plogi_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_rcv_plogi(vport, ndlp, cmdiocb);
1628         return ndlp->nlp_state;
1629 }
1630
1631 static uint32_t
1632 lpfc_rcv_prli_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_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1638         return ndlp->nlp_state;
1639 }
1640
1641 static uint32_t
1642 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1643                           void *arg, uint32_t evt)
1644 {
1645         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1646
1647         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1648         return ndlp->nlp_state;
1649 }
1650
1651 static uint32_t
1652 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1653                             struct lpfc_nodelist *ndlp,
1654                             void *arg, uint32_t evt)
1655 {
1656         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1657
1658         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1659         return ndlp->nlp_state;
1660 }
1661
1662 static uint32_t
1663 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1664                           void *arg, uint32_t evt)
1665 {
1666         struct lpfc_hba  *phba = vport->phba;
1667         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1668
1669         /* flush the target */
1670         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1671                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1672
1673         /* Treat like rcv logo */
1674         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1675         return ndlp->nlp_state;
1676 }
1677
1678 static uint32_t
1679 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1680                               struct lpfc_nodelist *ndlp,
1681                               void *arg,
1682                               uint32_t evt)
1683 {
1684         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1685
1686         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1687         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1688         spin_lock_irq(shost->host_lock);
1689         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1690         spin_unlock_irq(shost->host_lock);
1691         lpfc_disc_set_adisc(vport, ndlp);
1692         return ndlp->nlp_state;
1693 }
1694
1695 static uint32_t
1696 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1697                         void *arg, uint32_t evt)
1698 {
1699         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1700         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1701
1702         /* Ignore PLOGI if we have an outstanding LOGO */
1703         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1704                 return ndlp->nlp_state;
1705         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1706                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1707                 spin_lock_irq(shost->host_lock);
1708                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1709                 spin_unlock_irq(shost->host_lock);
1710         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1711                 /* send PLOGI immediately, move to PLOGI issue state */
1712                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1713                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1714                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1715                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1716                 }
1717         }
1718         return ndlp->nlp_state;
1719 }
1720
1721 static uint32_t
1722 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1723                        void *arg, uint32_t evt)
1724 {
1725         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1726         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1727         struct ls_rjt     stat;
1728
1729         memset(&stat, 0, sizeof (struct ls_rjt));
1730         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1731         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1732         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1733
1734         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1735                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1736                         spin_lock_irq(shost->host_lock);
1737                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1738                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1739                         spin_unlock_irq(shost->host_lock);
1740                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1741                         lpfc_issue_els_adisc(vport, ndlp, 0);
1742                 } else {
1743                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1744                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1745                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1746                 }
1747         }
1748         return ndlp->nlp_state;
1749 }
1750
1751 static uint32_t
1752 lpfc_rcv_logo_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_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1758         return ndlp->nlp_state;
1759 }
1760
1761 static uint32_t
1762 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1763                          void *arg, uint32_t evt)
1764 {
1765         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1766
1767         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1768         /*
1769          * Do not start discovery if discovery is about to start
1770          * or discovery in progress for this node. Starting discovery
1771          * here will affect the counting of discovery threads.
1772          */
1773         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1774             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1775                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1776                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1777                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1778                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1779                         lpfc_issue_els_adisc(vport, ndlp, 0);
1780                 } else {
1781                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1782                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1783                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1784                 }
1785         }
1786         return ndlp->nlp_state;
1787 }
1788
1789 static uint32_t
1790 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1791                        void *arg, uint32_t evt)
1792 {
1793         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1794         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1795
1796         spin_lock_irq(shost->host_lock);
1797         ndlp->nlp_flag |= NLP_LOGO_ACC;
1798         spin_unlock_irq(shost->host_lock);
1799
1800         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1801
1802         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1803                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1804                 spin_lock_irq(shost->host_lock);
1805                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1806                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1807                 spin_unlock_irq(shost->host_lock);
1808                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1809         } else {
1810                 spin_lock_irq(shost->host_lock);
1811                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1812                 spin_unlock_irq(shost->host_lock);
1813         }
1814         return ndlp->nlp_state;
1815 }
1816
1817 static uint32_t
1818 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1819                          void *arg, uint32_t evt)
1820 {
1821         struct lpfc_iocbq *cmdiocb, *rspiocb;
1822         IOCB_t *irsp;
1823
1824         cmdiocb = (struct lpfc_iocbq *) arg;
1825         rspiocb = cmdiocb->context_un.rsp_iocb;
1826
1827         irsp = &rspiocb->iocb;
1828         if (irsp->ulpStatus) {
1829                 ndlp->nlp_flag |= NLP_DEFER_RM;
1830                 return NLP_STE_FREED_NODE;
1831         }
1832         return ndlp->nlp_state;
1833 }
1834
1835 static uint32_t
1836 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1837                         void *arg, uint32_t evt)
1838 {
1839         struct lpfc_iocbq *cmdiocb, *rspiocb;
1840         IOCB_t *irsp;
1841
1842         cmdiocb = (struct lpfc_iocbq *) arg;
1843         rspiocb = cmdiocb->context_un.rsp_iocb;
1844
1845         irsp = &rspiocb->iocb;
1846         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1847                 lpfc_drop_node(vport, ndlp);
1848                 return NLP_STE_FREED_NODE;
1849         }
1850         return ndlp->nlp_state;
1851 }
1852
1853 static uint32_t
1854 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1855                         void *arg, uint32_t evt)
1856 {
1857         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1858         if (ndlp->nlp_DID == Fabric_DID) {
1859                 spin_lock_irq(shost->host_lock);
1860                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1861                 spin_unlock_irq(shost->host_lock);
1862         }
1863         lpfc_unreg_rpi(vport, ndlp);
1864         return ndlp->nlp_state;
1865 }
1866
1867 static uint32_t
1868 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1869                          void *arg, uint32_t evt)
1870 {
1871         struct lpfc_iocbq *cmdiocb, *rspiocb;
1872         IOCB_t *irsp;
1873
1874         cmdiocb = (struct lpfc_iocbq *) arg;
1875         rspiocb = cmdiocb->context_un.rsp_iocb;
1876
1877         irsp = &rspiocb->iocb;
1878         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1879                 lpfc_drop_node(vport, ndlp);
1880                 return NLP_STE_FREED_NODE;
1881         }
1882         return ndlp->nlp_state;
1883 }
1884
1885 static uint32_t
1886 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1887                             struct lpfc_nodelist *ndlp,
1888                             void *arg, uint32_t evt)
1889 {
1890         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1891         MAILBOX_t    *mb = &pmb->mb;
1892
1893         if (!mb->mbxStatus)
1894                 ndlp->nlp_rpi = mb->un.varWords[0];
1895         else {
1896                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1897                         lpfc_drop_node(vport, ndlp);
1898                         return NLP_STE_FREED_NODE;
1899                 }
1900         }
1901         return ndlp->nlp_state;
1902 }
1903
1904 static uint32_t
1905 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1906                         void *arg, uint32_t evt)
1907 {
1908         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1909
1910         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1911                 spin_lock_irq(shost->host_lock);
1912                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1913                 spin_unlock_irq(shost->host_lock);
1914                 return ndlp->nlp_state;
1915         }
1916         lpfc_drop_node(vport, ndlp);
1917         return NLP_STE_FREED_NODE;
1918 }
1919
1920 static uint32_t
1921 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1922                            void *arg, uint32_t evt)
1923 {
1924         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1925
1926         /* Don't do anything that will mess up processing of the
1927          * previous RSCN.
1928          */
1929         if (vport->fc_flag & FC_RSCN_DEFERRED)
1930                 return ndlp->nlp_state;
1931
1932         spin_lock_irq(shost->host_lock);
1933         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1934         spin_unlock_irq(shost->host_lock);
1935         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1936         return ndlp->nlp_state;
1937 }
1938
1939
1940 /* This next section defines the NPort Discovery State Machine */
1941
1942 /* There are 4 different double linked lists nodelist entries can reside on.
1943  * The plogi list and adisc list are used when Link Up discovery or RSCN
1944  * processing is needed. Each list holds the nodes that we will send PLOGI
1945  * or ADISC on. These lists will keep track of what nodes will be effected
1946  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1947  * The unmapped_list will contain all nodes that we have successfully logged
1948  * into at the Fibre Channel level. The mapped_list will contain all nodes
1949  * that are mapped FCP targets.
1950  */
1951 /*
1952  * The bind list is a list of undiscovered (potentially non-existent) nodes
1953  * that we have saved binding information on. This information is used when
1954  * nodes transition from the unmapped to the mapped list.
1955  */
1956 /* For UNUSED_NODE state, the node has just been allocated .
1957  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1958  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1959  * and put on the unmapped list. For ADISC processing, the node is taken off
1960  * the ADISC list and placed on either the mapped or unmapped list (depending
1961  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1962  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1963  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1964  * node, the node is taken off the unmapped list. The binding list is checked
1965  * for a valid binding, or a binding is automatically assigned. If binding
1966  * assignment is unsuccessful, the node is left on the unmapped list. If
1967  * binding assignment is successful, the associated binding list entry (if
1968  * any) is removed, and the node is placed on the mapped list.
1969  */
1970 /*
1971  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1972  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1973  * expire, all effected nodes will receive a DEVICE_RM event.
1974  */
1975 /*
1976  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1977  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1978  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1979  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1980  * we will first process the ADISC list.  32 entries are processed initially and
1981  * ADISC is initited for each one.  Completions / Events for each node are
1982  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1983  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1984  * waiting, and the ADISC list count is identically 0, then we are done. For
1985  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1986  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1987  * list.  32 entries are processed initially and PLOGI is initited for each one.
1988  * Completions / Events for each node are funnelled thru the state machine.  As
1989  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1990  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1991  * indentically 0, then we are done. We have now completed discovery / RSCN
1992  * handling. Upon completion, ALL nodes should be on either the mapped or
1993  * unmapped lists.
1994  */
1995
1996 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1997      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1998         /* Action routine                  Event       Current State  */
1999         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2000         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2001         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2002         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2003         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2004         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2005         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2006         lpfc_disc_illegal,              /* CMPL_PRLI       */
2007         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2008         lpfc_disc_illegal,              /* CMPL_ADISC      */
2009         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2010         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2011         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2012
2013         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2014         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2015         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2016         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2017         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2018         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2019         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2020         lpfc_disc_illegal,              /* CMPL_PRLI       */
2021         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2022         lpfc_disc_illegal,              /* CMPL_ADISC      */
2023         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2024         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2025         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2026
2027         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2028         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2029         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2030         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2031         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2032         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2033         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2034         lpfc_disc_illegal,              /* CMPL_PRLI       */
2035         lpfc_disc_illegal,              /* CMPL_LOGO       */
2036         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2037         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2038         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2039         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2040
2041         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2042         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2043         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2044         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2045         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2046         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2047         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2048         lpfc_disc_illegal,              /* CMPL_PRLI       */
2049         lpfc_disc_illegal,              /* CMPL_LOGO       */
2050         lpfc_disc_illegal,              /* CMPL_ADISC      */
2051         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2052         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2053         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2054
2055         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2056         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2057         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2058         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2059         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2060         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2061         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2062         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2063         lpfc_disc_illegal,              /* CMPL_LOGO       */
2064         lpfc_disc_illegal,              /* CMPL_ADISC      */
2065         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2066         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2067         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2068
2069         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2070         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2071         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2072         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2073         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2074         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2075         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2076         lpfc_disc_illegal,              /* CMPL_PRLI       */
2077         lpfc_disc_illegal,              /* CMPL_LOGO       */
2078         lpfc_disc_illegal,              /* CMPL_ADISC      */
2079         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2080         lpfc_disc_illegal,              /* DEVICE_RM       */
2081         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2082
2083         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2084         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2085         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2086         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2087         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2088         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2089         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2090         lpfc_disc_illegal,              /* CMPL_PRLI       */
2091         lpfc_disc_illegal,              /* CMPL_LOGO       */
2092         lpfc_disc_illegal,              /* CMPL_ADISC      */
2093         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2094         lpfc_disc_illegal,              /* DEVICE_RM       */
2095         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2096
2097         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2098         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2099         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2100         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2101         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2102         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2103         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2104         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2105         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2106         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2107         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2108         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2109         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2110 };
2111
2112 int
2113 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2114                         void *arg, uint32_t evt)
2115 {
2116         uint32_t cur_state, rc;
2117         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2118                          uint32_t);
2119         uint32_t got_ndlp = 0;
2120
2121         if (lpfc_nlp_get(ndlp))
2122                 got_ndlp = 1;
2123
2124         cur_state = ndlp->nlp_state;
2125
2126         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2127         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2128                          "0211 DSM in event x%x on NPort x%x in "
2129                          "state %d Data: x%x\n",
2130                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2131
2132         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2133                  "DSM in:          evt:%d ste:%d did:x%x",
2134                 evt, cur_state, ndlp->nlp_DID);
2135
2136         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2137         rc = (func) (vport, ndlp, arg, evt);
2138
2139         /* DSM out state <rc> on NPort <nlp_DID> */
2140         if (got_ndlp) {
2141                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2142                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2143                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2144
2145                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2146                         "DSM out:         ste:%d did:x%x flg:x%x",
2147                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2148                 /* Decrement the ndlp reference count held for this function */
2149                 lpfc_nlp_put(ndlp);
2150         } else {
2151                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2152                         "0213 DSM out state %d on NPort free\n", rc);
2153
2154                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2155                         "DSM out:         ste:%d did:x%x flg:x%x",
2156                         rc, 0, 0);
2157         }
2158
2159         return rc;
2160 }