SAFE public projects git trees. - safe/jmp/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_hw4.h"
  32 #include "lpfc_hw.h"
  33 #include "lpfc_sli.h"
  34 #include "lpfc_sli4.h"
  35 #include "lpfc_nl.h"
  36 #include "lpfc_disc.h"
  37 #include "lpfc_scsi.h"
  38 #include "lpfc.h"
  39 #include "lpfc_logmsg.h"
  40 #include "lpfc_crtn.h"
  41 #include "lpfc_vport.h"
  42 #include "lpfc_debugfs.h"
  43
  44
  45 /* Called to verify a rcv'ed ADISC was intended for us. */
  46 static int
  47 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  48                  struct lpfc_name *nn, struct lpfc_name *pn)
  49 {
  50         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  51          * table entry for that node.
  52          */
  53         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  54                 return 0;
  55
  56         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  57                 return 0;
  58
  59         /* we match, return success */
  60         return 1;
  61 }
  62
  63 int
  64 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  65                  struct serv_parm * sp, uint32_t class)
  66 {
  67         volatile struct serv_parm *hsp = &vport->fc_sparam;
  68         uint16_t hsp_value, ssp_value = 0;
  69
  70         /*
  71          * The receive data field size and buffer-to-buffer receive data field
  72          * size entries are 16 bits but are represented as two 8-bit fields in
  73          * the driver data structure to account for rsvd bits and other control
  74          * bits.  Reconstruct and compare the fields as a 16-bit values before
  75          * correcting the byte values.
  76          */
  77         if (sp->cls1.classValid) {
  78                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  79                                 hsp->cls1.rcvDataSizeLsb;
  80                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  81                                 sp->cls1.rcvDataSizeLsb;
  82                 if (!ssp_value)
  83                         goto bad_service_param;
  84                 if (ssp_value > hsp_value) {
  85                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  86                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  87                 }
  88         } else if (class == CLASS1) {
  89                 goto bad_service_param;
  90         }
  91
  92         if (sp->cls2.classValid) {
  93                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  94                                 hsp->cls2.rcvDataSizeLsb;
  95                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  96                                 sp->cls2.rcvDataSizeLsb;
  97                 if (!ssp_value)
  98                         goto bad_service_param;
  99                 if (ssp_value > hsp_value) {
 100                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
 101                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
 102                 }
 103         } else if (class == CLASS2) {
 104                 goto bad_service_param;
 105         }
 106
 107         if (sp->cls3.classValid) {
 108                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 109                                 hsp->cls3.rcvDataSizeLsb;
 110                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 111                                 sp->cls3.rcvDataSizeLsb;
 112                 if (!ssp_value)
 113                         goto bad_service_param;
 114                 if (ssp_value > hsp_value) {
 115                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 116                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 117                 }
 118         } else if (class == CLASS3) {
 119                 goto bad_service_param;
 120         }
 121
 122         /*
 123          * Preserve the upper four bits of the MSB from the PLOGI response.
 124          * These bits contain the Buffer-to-Buffer State Change Number
 125          * from the target and need to be passed to the FW.
 126          */
 127         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 128         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 129         if (ssp_value > hsp_value) {
 130                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 131                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 132                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 133         }
 134
 135         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 136         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 137         return 1;
 138 bad_service_param:
 139         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 140                          "0207 Device %x "
 141                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 142                          "invalid service parameters.  Ignoring device.\n",
 143                          ndlp->nlp_DID,
 144                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 145                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 146                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 147                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 148         return 0;
 149 }
 150
 151 static void *
 152 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 153                         struct lpfc_iocbq *rspiocb)
 154 {
 155         struct lpfc_dmabuf *pcmd, *prsp;
 156         uint32_t *lp;
 157         void     *ptr = NULL;
 158         IOCB_t   *irsp;
 159
 160         irsp = &rspiocb->iocb;
 161         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 162
 163         /* For lpfc_els_abort, context2 could be zero'ed to delay
 164          * freeing associated memory till after ABTS completes.
 165          */
 166         if (pcmd) {
 167                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 168                                        list);
 169                 if (prsp) {
 170                         lp = (uint32_t *) prsp->virt;
 171                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 172                 }
 173         } else {
 174                 /* Force ulpStatus error since we are returning NULL ptr */
 175                 if (!(irsp->ulpStatus)) {
 176                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 177                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 178                 }
 179                 ptr = NULL;
 180         }
 181         return ptr;
 182 }
 183
 184
 185 /*
 186  * Free resources / clean up outstanding I/Os
 187  * associated with a LPFC_NODELIST entry. This
 188  * routine effectively results in a "software abort".
 189  */
 190 int
 191 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 192 {
 193         LIST_HEAD(completions);
 194         struct lpfc_sli  *psli = &phba->sli;
 195         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 196         struct lpfc_iocbq *iocb, *next_iocb;
 197
 198         /* Abort outstanding I/O on NPort <nlp_DID> */
 199         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 200                          "0205 Abort outstanding I/O on NPort x%x "
 201                          "Data: x%x x%x x%x\n",
 202                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 203                          ndlp->nlp_rpi);
 204
 205         lpfc_fabric_abort_nport(ndlp);
 206
 207         /* First check the txq */
 208         spin_lock_irq(&phba->hbalock);
 209         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 210                 /* Check to see if iocb matches the nport we are looking for */
 211                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 212                         /* It matches, so deque and call compl with anp error */
 213                         list_move_tail(&iocb->list, &completions);
 214                         pring->txq_cnt--;
 215                 }
 216         }
 217
 218         /* Next check the txcmplq */
 219         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 220                 /* Check to see if iocb matches the nport we are looking for */
 221                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 222                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 223                 }
 224         }
 225         spin_unlock_irq(&phba->hbalock);
 226
 227         /* Cancel all the IOCBs from the completions list */
 228         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 229                               IOERR_SLI_ABORTED);
 230
 231         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 232         return 0;
 233 }
 234
 235 static int
 236 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 237                struct lpfc_iocbq *cmdiocb)
 238 {
 239         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 240         struct lpfc_hba    *phba = vport->phba;
 241         struct lpfc_dmabuf *pcmd;
 242         uint32_t *lp;
 243         IOCB_t *icmd;
 244         struct serv_parm *sp;
 245         LPFC_MBOXQ_t *mbox;
 246         struct ls_rjt stat;
 247         int rc;
 248
 249         memset(&stat, 0, sizeof (struct ls_rjt));
 250         if (vport->port_state <= LPFC_FLOGI) {
 251                 /* Before responding to PLOGI, check for pt2pt mode.
 252                  * If we are pt2pt, with an outstanding FLOGI, abort
 253                  * the FLOGI and resend it first.
 254                  */
 255                 if (vport->fc_flag & FC_PT2PT) {
 256                          lpfc_els_abort_flogi(phba);
 257                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 258                                 /* If the other side is supposed to initiate
 259                                  * the PLOGI anyway, just ACC it now and
 260                                  * move on with discovery.
 261                                  */
 262                                 phba->fc_edtov = FF_DEF_EDTOV;
 263                                 phba->fc_ratov = FF_DEF_RATOV;
 264                                 /* Start discovery - this should just do
 265                                    CLEAR_LA */
 266                                 lpfc_disc_start(vport);
 267                         } else
 268                                 lpfc_initial_flogi(vport);
 269                 } else {
 270                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 271                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 272                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 273                                             ndlp, NULL);
 274                         return 0;
 275                 }
 276         }
 277         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 278         lp = (uint32_t *) pcmd->virt;
 279         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 280         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 281                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 282                                  "0140 PLOGI Reject: invalid nname\n");
 283                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 284                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 285                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 286                         NULL);
 287                 return 0;
 288         }
 289         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 290                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 291                                  "0141 PLOGI Reject: invalid pname\n");
 292                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 293                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 294                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 295                         NULL);
 296                 return 0;
 297         }
 298         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
 299                 /* Reject this request because invalid parameters */
 300                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 301                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 302                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 303                         NULL);
 304                 return 0;
 305         }
 306         icmd = &cmdiocb->iocb;
 307
 308         /* PLOGI chkparm OK */
 309         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 310                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 311                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 312                          ndlp->nlp_rpi);
 313
 314         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 315                 ndlp->nlp_fcp_info |= CLASS2;
 316         else
 317                 ndlp->nlp_fcp_info |= CLASS3;
 318
 319         ndlp->nlp_class_sup = 0;
 320         if (sp->cls1.classValid)
 321                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 322         if (sp->cls2.classValid)
 323                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 324         if (sp->cls3.classValid)
 325                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 326         if (sp->cls4.classValid)
 327                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 328         ndlp->nlp_maxframe =
 329                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 330
 331         /* no need to reg_login if we are already in one of these states */
 332         switch (ndlp->nlp_state) {
 333         case  NLP_STE_NPR_NODE:
 334                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 335                         break;
 336         case  NLP_STE_REG_LOGIN_ISSUE:
 337         case  NLP_STE_PRLI_ISSUE:
 338         case  NLP_STE_UNMAPPED_NODE:
 339         case  NLP_STE_MAPPED_NODE:
 340                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 341                 return 1;
 342         }
 343
 344         if ((vport->fc_flag & FC_PT2PT) &&
 345             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 346                 /* rcv'ed PLOGI decides what our NPortId will be */
 347                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 348                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 349                 if (mbox == NULL)
 350                         goto out;
 351                 lpfc_config_link(phba, mbox);
 352                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 353                 mbox->vport = vport;
 354                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 355                 if (rc == MBX_NOT_FINISHED) {
 356                         mempool_free(mbox, phba->mbox_mem_pool);
 357                         goto out;
 358                 }
 359
 360                 lpfc_can_disctmo(vport);
 361         }
 362         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 363         if (!mbox)
 364                 goto out;
 365
 366         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 367                             (uint8_t *) sp, mbox, 0);
 368         if (rc) {
 369                 mempool_free(mbox, phba->mbox_mem_pool);
 370                 goto out;
 371         }
 372
 373         /* ACC PLOGI rsp command needs to execute first,
 374          * queue this mbox command to be processed later.
 375          */
 376         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 377         /*
 378          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 379          * command issued in lpfc_cmpl_els_acc().
 380          */
 381         mbox->vport = vport;
 382         spin_lock_irq(shost->host_lock);
 383         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 384         spin_unlock_irq(shost->host_lock);
 385
 386         /*
 387          * If there is an outstanding PLOGI issued, abort it before
 388          * sending ACC rsp for received PLOGI. If pending plogi
 389          * is not canceled here, the plogi will be rejected by
 390          * remote port and will be retried. On a configuration with
 391          * single discovery thread, this will cause a huge delay in
 392          * discovery. Also this will cause multiple state machines
 393          * running in parallel for this node.
 394          */
 395         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 396                 /* software abort outstanding PLOGI */
 397                 lpfc_els_abort(phba, ndlp);
 398         }
 399
 400         if ((vport->port_type == LPFC_NPIV_PORT &&
 401              vport->cfg_restrict_login)) {
 402
 403                 /* In order to preserve RPIs, we want to cleanup
 404                  * the default RPI the firmware created to rcv
 405                  * this ELS request. The only way to do this is
 406                  * to register, then unregister the RPI.
 407                  */
 408                 spin_lock_irq(shost->host_lock);
 409                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 410                 spin_unlock_irq(shost->host_lock);
 411                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 412                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 413                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 414                         ndlp, mbox);
 415                 return 1;
 416         }
 417         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 418         return 1;
 419 out:
 420         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 421         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 422         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 423         return 0;
 424 }
 425
 426 static int
 427 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 428                 struct lpfc_iocbq *cmdiocb)
 429 {
 430         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 431         struct lpfc_dmabuf *pcmd;
 432         struct serv_parm   *sp;
 433         struct lpfc_name   *pnn, *ppn;
 434         struct ls_rjt stat;
 435         ADISC *ap;
 436         IOCB_t *icmd;
 437         uint32_t *lp;
 438         uint32_t cmd;
 439
 440         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 441         lp = (uint32_t *) pcmd->virt;
 442
 443         cmd = *lp++;
 444         if (cmd == ELS_CMD_ADISC) {
 445                 ap = (ADISC *) lp;
 446                 pnn = (struct lpfc_name *) & ap->nodeName;
 447                 ppn = (struct lpfc_name *) & ap->portName;
 448         } else {
 449                 sp = (struct serv_parm *) lp;
 450                 pnn = (struct lpfc_name *) & sp->nodeName;
 451                 ppn = (struct lpfc_name *) & sp->portName;
 452         }
 453
 454         icmd = &cmdiocb->iocb;
 455         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 456                 if (cmd == ELS_CMD_ADISC) {
 457                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 458                 } else {
 459                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 460                                          NULL);
 461                 }
 462                 return 1;
 463         }
 464         /* Reject this request because invalid parameters */
 465         stat.un.b.lsRjtRsvd0 = 0;
 466         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 467         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 468         stat.un.b.vendorUnique = 0;
 469         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 470
 471         /* 1 sec timeout */
 472         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 473
 474         spin_lock_irq(shost->host_lock);
 475         ndlp->nlp_flag |= NLP_DELAY_TMO;
 476         spin_unlock_irq(shost->host_lock);
 477         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 478         ndlp->nlp_prev_state = ndlp->nlp_state;
 479         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 480         return 0;
 481 }
 482
 483 static int
 484 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 485               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 486 {
 487         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 488
 489         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 490         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 491          * PLOGIs during LOGO storms from a device.
 492          */
 493         spin_lock_irq(shost->host_lock);
 494         ndlp->nlp_flag |= NLP_LOGO_ACC;
 495         spin_unlock_irq(shost->host_lock);
 496         if (els_cmd == ELS_CMD_PRLO)
 497                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 498         else
 499                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 500
 501         if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 502              ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 503               !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 504             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 505                 /* Only try to re-login if this is NOT a Fabric Node */
 506                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 507                 spin_lock_irq(shost->host_lock);
 508                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 509                 spin_unlock_irq(shost->host_lock);
 510
 511                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 512         }
 513         ndlp->nlp_prev_state = ndlp->nlp_state;
 514         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 515
 516         spin_lock_irq(shost->host_lock);
 517         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 518         spin_unlock_irq(shost->host_lock);
 519         /* The driver has to wait until the ACC completes before it continues
 520          * processing the LOGO.  The action will resume in
 521          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 522          * unreg_login, the driver waits so the ACC does not get aborted.
 523          */
 524         return 0;
 525 }
 526
 527 static void
 528 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 529               struct lpfc_iocbq *cmdiocb)
 530 {
 531         struct lpfc_dmabuf *pcmd;
 532         uint32_t *lp;
 533         PRLI *npr;
 534         struct fc_rport *rport = ndlp->rport;
 535         u32 roles;
 536
 537         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 538         lp = (uint32_t *) pcmd->virt;
 539         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 540
 541         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 542         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 543         if (npr->prliType == PRLI_FCP_TYPE) {
 544                 if (npr->initiatorFunc)
 545                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 546                 if (npr->targetFunc)
 547                         ndlp->nlp_type |= NLP_FCP_TARGET;
 548                 if (npr->Retry)
 549                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 550         }
 551         if (rport) {
 552                 /* We need to update the rport role values */
 553                 roles = FC_RPORT_ROLE_UNKNOWN;
 554                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 555                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 556                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 557                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 558
 559                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 560                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 561                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 562
 563                 fc_remote_port_rolechg(rport, roles);
 564         }
 565 }
 566
 567 static uint32_t
 568 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 569 {
 570         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 571
 572         if (!ndlp->nlp_rpi) {
 573                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 574                 return 0;
 575         }
 576
 577         if (!(vport->fc_flag & FC_PT2PT)) {
 578                 /* Check config parameter use-adisc or FCP-2 */
 579                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 580                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 581                         spin_lock_irq(shost->host_lock);
 582                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 583                         spin_unlock_irq(shost->host_lock);
 584                         return 1;
 585                 }
 586         }
 587         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 588         lpfc_unreg_rpi(vport, ndlp);
 589         return 0;
 590 }
 591
 592 static uint32_t
 593 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 594                   void *arg, uint32_t evt)
 595 {
 596         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 597                          "0271 Illegal State Transition: node x%x "
 598                          "event x%x, state x%x Data: x%x x%x\n",
 599                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 600                          ndlp->nlp_flag);
 601         return ndlp->nlp_state;
 602 }
 603
 604 static uint32_t
 605 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 606                   void *arg, uint32_t evt)
 607 {
 608         /* This transition is only legal if we previously
 609          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 610          * working on the same NPortID, do nothing for this thread
 611          * to stop it.
 612          */
 613         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 614                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 615                          "0272 Illegal State Transition: node x%x "
 616                          "event x%x, state x%x Data: x%x x%x\n",
 617                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 618                          ndlp->nlp_flag);
 619         }
 620         return ndlp->nlp_state;
 621 }
 622
 623 /* Start of Discovery State Machine routines */
 624
 625 static uint32_t
 626 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 627                            void *arg, uint32_t evt)
 628 {
 629         struct lpfc_iocbq *cmdiocb;
 630
 631         cmdiocb = (struct lpfc_iocbq *) arg;
 632
 633         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 634                 return ndlp->nlp_state;
 635         }
 636         return NLP_STE_FREED_NODE;
 637 }
 638
 639 static uint32_t
 640 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 641                          void *arg, uint32_t evt)
 642 {
 643         lpfc_issue_els_logo(vport, ndlp, 0);
 644         return ndlp->nlp_state;
 645 }
 646
 647 static uint32_t
 648 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 649                           void *arg, uint32_t evt)
 650 {
 651         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 652         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 653
 654         spin_lock_irq(shost->host_lock);
 655         ndlp->nlp_flag |= NLP_LOGO_ACC;
 656         spin_unlock_irq(shost->host_lock);
 657         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 658
 659         return ndlp->nlp_state;
 660 }
 661
 662 static uint32_t
 663 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 664                            void *arg, uint32_t evt)
 665 {
 666         return NLP_STE_FREED_NODE;
 667 }
 668
 669 static uint32_t
 670 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 671                            void *arg, uint32_t evt)
 672 {
 673         return NLP_STE_FREED_NODE;
 674 }
 675
 676 static uint32_t
 677 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 678                            void *arg, uint32_t evt)
 679 {
 680         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 681         struct lpfc_hba   *phba = vport->phba;
 682         struct lpfc_iocbq *cmdiocb = arg;
 683         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 684         uint32_t *lp = (uint32_t *) pcmd->virt;
 685         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 686         struct ls_rjt stat;
 687         int port_cmp;
 688
 689         memset(&stat, 0, sizeof (struct ls_rjt));
 690
 691         /* For a PLOGI, we only accept if our portname is less
 692          * than the remote portname.
 693          */
 694         phba->fc_stat.elsLogiCol++;
 695         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 696                           sizeof(struct lpfc_name));
 697
 698         if (port_cmp >= 0) {
 699                 /* Reject this request because the remote node will accept
 700                    ours */
 701                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 702                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 703                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 704                         NULL);
 705         } else {
 706                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 707                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 708                     (vport->num_disc_nodes)) {
 709                         spin_lock_irq(shost->host_lock);
 710                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 711                         spin_unlock_irq(shost->host_lock);
 712                         /* Check if there are more PLOGIs to be sent */
 713                         lpfc_more_plogi(vport);
 714                         if (vport->num_disc_nodes == 0) {
 715                                 spin_lock_irq(shost->host_lock);
 716                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 717                                 spin_unlock_irq(shost->host_lock);
 718                                 lpfc_can_disctmo(vport);
 719                                 lpfc_end_rscn(vport);
 720                         }
 721                 }
 722         } /* If our portname was less */
 723
 724         return ndlp->nlp_state;
 725 }
 726
 727 static uint32_t
 728 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 729                           void *arg, uint32_t evt)
 730 {
 731         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 732         struct ls_rjt     stat;
 733
 734         memset(&stat, 0, sizeof (struct ls_rjt));
 735         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 736         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 737         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 738         return ndlp->nlp_state;
 739 }
 740
 741 static uint32_t
 742 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 743                           void *arg, uint32_t evt)
 744 {
 745         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 746
 747                                 /* software abort outstanding PLOGI */
 748         lpfc_els_abort(vport->phba, ndlp);
 749
 750         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 751         return ndlp->nlp_state;
 752 }
 753
 754 static uint32_t
 755 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 756                          void *arg, uint32_t evt)
 757 {
 758         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 759         struct lpfc_hba   *phba = vport->phba;
 760         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 761
 762         /* software abort outstanding PLOGI */
 763         lpfc_els_abort(phba, ndlp);
 764
 765         if (evt == NLP_EVT_RCV_LOGO) {
 766                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 767         } else {
 768                 lpfc_issue_els_logo(vport, ndlp, 0);
 769         }
 770
 771         /* Put ndlp in npr state set plogi timer for 1 sec */
 772         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 773         spin_lock_irq(shost->host_lock);
 774         ndlp->nlp_flag |= NLP_DELAY_TMO;
 775         spin_unlock_irq(shost->host_lock);
 776         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 777         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 778         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 779
 780         return ndlp->nlp_state;
 781 }
 782
 783 static uint32_t
 784 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 785                             struct lpfc_nodelist *ndlp,
 786                             void *arg,
 787                             uint32_t evt)
 788 {
 789         struct lpfc_hba    *phba = vport->phba;
 790         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 791         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 792         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 793         uint32_t *lp;
 794         IOCB_t *irsp;
 795         struct serv_parm *sp;
 796         LPFC_MBOXQ_t *mbox;
 797
 798         cmdiocb = (struct lpfc_iocbq *) arg;
 799         rspiocb = cmdiocb->context_un.rsp_iocb;
 800
 801         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 802                 /* Recovery from PLOGI collision logic */
 803                 return ndlp->nlp_state;
 804         }
 805
 806         irsp = &rspiocb->iocb;
 807
 808         if (irsp->ulpStatus)
 809                 goto out;
 810
 811         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 812
 813         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 814
 815         lp = (uint32_t *) prsp->virt;
 816         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 817
 818         /* Some switches have FDMI servers returning 0 for WWN */
 819         if ((ndlp->nlp_DID != FDMI_DID) &&
 820                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
 821                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
 822                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 823                                  "0142 PLOGI RSP: Invalid WWN.\n");
 824                 goto out;
 825         }
 826         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 827                 goto out;
 828         /* PLOGI chkparm OK */
 829         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 830                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 831                          ndlp->nlp_DID, ndlp->nlp_state,
 832                          ndlp->nlp_flag, ndlp->nlp_rpi);
 833         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 834                 ndlp->nlp_fcp_info |= CLASS2;
 835         else
 836                 ndlp->nlp_fcp_info |= CLASS3;
 837
 838         ndlp->nlp_class_sup = 0;
 839         if (sp->cls1.classValid)
 840                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 841         if (sp->cls2.classValid)
 842                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 843         if (sp->cls3.classValid)
 844                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 845         if (sp->cls4.classValid)
 846                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 847         ndlp->nlp_maxframe =
 848                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 849
 850         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 851         if (!mbox) {
 852                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 853                         "0133 PLOGI: no memory for reg_login "
 854                         "Data: x%x x%x x%x x%x\n",
 855                         ndlp->nlp_DID, ndlp->nlp_state,
 856                         ndlp->nlp_flag, ndlp->nlp_rpi);
 857                 goto out;
 858         }
 859
 860         lpfc_unreg_rpi(vport, ndlp);
 861
 862         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 863                            (uint8_t *) sp, mbox, 0) == 0) {
 864                 switch (ndlp->nlp_DID) {
 865                 case NameServer_DID:
 866                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 867                         break;
 868                 case FDMI_DID:
 869                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 870                         break;
 871                 default:
 872                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 873                 }
 874                 mbox->context2 = lpfc_nlp_get(ndlp);
 875                 mbox->vport = vport;
 876                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 877                     != MBX_NOT_FINISHED) {
 878                         lpfc_nlp_set_state(vport, ndlp,
 879                                            NLP_STE_REG_LOGIN_ISSUE);
 880                         return ndlp->nlp_state;
 881                 }
 882                 /* decrement node reference count to the failed mbox
 883                  * command
 884                  */
 885                 lpfc_nlp_put(ndlp);
 886                 mp = (struct lpfc_dmabuf *) mbox->context1;
 887                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 888                 kfree(mp);
 889                 mempool_free(mbox, phba->mbox_mem_pool);
 890
 891                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 892                                  "0134 PLOGI: cannot issue reg_login "
 893                                  "Data: x%x x%x x%x x%x\n",
 894                                  ndlp->nlp_DID, ndlp->nlp_state,
 895                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 896         } else {
 897                 mempool_free(mbox, phba->mbox_mem_pool);
 898
 899                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 900                                  "0135 PLOGI: cannot format 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         }
 905
 906
 907 out:
 908         if (ndlp->nlp_DID == NameServer_DID) {
 909                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 910                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 911                                  "0261 Cannot Register NameServer login\n");
 912         }
 913
 914         spin_lock_irq(shost->host_lock);
 915         ndlp->nlp_flag |= NLP_DEFER_RM;
 916         spin_unlock_irq(shost->host_lock);
 917         return NLP_STE_FREED_NODE;
 918 }
 919
 920 static uint32_t
 921 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 922                            void *arg, uint32_t evt)
 923 {
 924         return ndlp->nlp_state;
 925 }
 926
 927 static uint32_t
 928 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
 929         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
 930 {
 931         return ndlp->nlp_state;
 932 }
 933
 934 static uint32_t
 935 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 936                            void *arg, uint32_t evt)
 937 {
 938         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 939
 940         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 941                 spin_lock_irq(shost->host_lock);
 942                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 943                 spin_unlock_irq(shost->host_lock);
 944                 return ndlp->nlp_state;
 945         } else {
 946                 /* software abort outstanding PLOGI */
 947                 lpfc_els_abort(vport->phba, ndlp);
 948
 949                 lpfc_drop_node(vport, ndlp);
 950                 return NLP_STE_FREED_NODE;
 951         }
 952 }
 953
 954 static uint32_t
 955 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 956                               struct lpfc_nodelist *ndlp,
 957                               void *arg,
 958                               uint32_t evt)
 959 {
 960         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 961         struct lpfc_hba  *phba = vport->phba;
 962
 963         /* Don't do anything that will mess up processing of the
 964          * previous RSCN.
 965          */
 966         if (vport->fc_flag & FC_RSCN_DEFERRED)
 967                 return ndlp->nlp_state;
 968
 969         /* software abort outstanding PLOGI */
 970         lpfc_els_abort(phba, ndlp);
 971
 972         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 973         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 974         spin_lock_irq(shost->host_lock);
 975         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 976         spin_unlock_irq(shost->host_lock);
 977
 978         return ndlp->nlp_state;
 979 }
 980
 981 static uint32_t
 982 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 983                            void *arg, uint32_t evt)
 984 {
 985         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 986         struct lpfc_hba   *phba = vport->phba;
 987         struct lpfc_iocbq *cmdiocb;
 988
 989         /* software abort outstanding ADISC */
 990         lpfc_els_abort(phba, ndlp);
 991
 992         cmdiocb = (struct lpfc_iocbq *) arg;
 993
 994         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 995                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 996                         spin_lock_irq(shost->host_lock);
 997                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 998                         spin_unlock_irq(shost->host_lock);
 999                         if (vport->num_disc_nodes)
1000                                 lpfc_more_adisc(vport);
1001                 }
1002                 return ndlp->nlp_state;
1003         }
1004         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1005         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1006         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1007
1008         return ndlp->nlp_state;
1009 }
1010
1011 static uint32_t
1012 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1013                           void *arg, uint32_t evt)
1014 {
1015         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1016
1017         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1018         return ndlp->nlp_state;
1019 }
1020
1021 static uint32_t
1022 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1023                           void *arg, uint32_t evt)
1024 {
1025         struct lpfc_hba *phba = vport->phba;
1026         struct lpfc_iocbq *cmdiocb;
1027
1028         cmdiocb = (struct lpfc_iocbq *) arg;
1029
1030         /* software abort outstanding ADISC */
1031         lpfc_els_abort(phba, ndlp);
1032
1033         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1034         return ndlp->nlp_state;
1035 }
1036
1037 static uint32_t
1038 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1039                             struct lpfc_nodelist *ndlp,
1040                             void *arg, uint32_t evt)
1041 {
1042         struct lpfc_iocbq *cmdiocb;
1043
1044         cmdiocb = (struct lpfc_iocbq *) arg;
1045
1046         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1047         return ndlp->nlp_state;
1048 }
1049
1050 static uint32_t
1051 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1052                           void *arg, uint32_t evt)
1053 {
1054         struct lpfc_iocbq *cmdiocb;
1055
1056         cmdiocb = (struct lpfc_iocbq *) arg;
1057
1058         /* Treat like rcv logo */
1059         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1060         return ndlp->nlp_state;
1061 }
1062
1063 static uint32_t
1064 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1065                             struct lpfc_nodelist *ndlp,
1066                             void *arg, uint32_t evt)
1067 {
1068         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1069         struct lpfc_hba   *phba = vport->phba;
1070         struct lpfc_iocbq *cmdiocb, *rspiocb;
1071         IOCB_t *irsp;
1072         ADISC *ap;
1073
1074         cmdiocb = (struct lpfc_iocbq *) arg;
1075         rspiocb = cmdiocb->context_un.rsp_iocb;
1076
1077         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1078         irsp = &rspiocb->iocb;
1079
1080         if ((irsp->ulpStatus) ||
1081             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1082                 /* 1 sec timeout */
1083                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1084                 spin_lock_irq(shost->host_lock);
1085                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1086                 spin_unlock_irq(shost->host_lock);
1087                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1088
1089                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1090                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1091
1092                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1093                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1094                 lpfc_unreg_rpi(vport, ndlp);
1095                 return ndlp->nlp_state;
1096         }
1097
1098         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1099                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1100                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1101         } else {
1102                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1103                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1104         }
1105         return ndlp->nlp_state;
1106 }
1107
1108 static uint32_t
1109 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1110                            void *arg, uint32_t evt)
1111 {
1112         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1113
1114         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1115                 spin_lock_irq(shost->host_lock);
1116                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1117                 spin_unlock_irq(shost->host_lock);
1118                 return ndlp->nlp_state;
1119         } else {
1120                 /* software abort outstanding ADISC */
1121                 lpfc_els_abort(vport->phba, ndlp);
1122
1123                 lpfc_drop_node(vport, ndlp);
1124                 return NLP_STE_FREED_NODE;
1125         }
1126 }
1127
1128 static uint32_t
1129 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1130                               struct lpfc_nodelist *ndlp,
1131                               void *arg,
1132                               uint32_t evt)
1133 {
1134         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1135         struct lpfc_hba  *phba = vport->phba;
1136
1137         /* Don't do anything that will mess up processing of the
1138          * previous RSCN.
1139          */
1140         if (vport->fc_flag & FC_RSCN_DEFERRED)
1141                 return ndlp->nlp_state;
1142
1143         /* software abort outstanding ADISC */
1144         lpfc_els_abort(phba, ndlp);
1145
1146         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1147         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1148         spin_lock_irq(shost->host_lock);
1149         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1150         spin_unlock_irq(shost->host_lock);
1151         lpfc_disc_set_adisc(vport, ndlp);
1152         return ndlp->nlp_state;
1153 }
1154
1155 static uint32_t
1156 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1157                               struct lpfc_nodelist *ndlp,
1158                               void *arg,
1159                               uint32_t evt)
1160 {
1161         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1162
1163         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1164         return ndlp->nlp_state;
1165 }
1166
1167 static uint32_t
1168 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1169                              struct lpfc_nodelist *ndlp,
1170                              void *arg,
1171                              uint32_t evt)
1172 {
1173         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1174
1175         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1176         return ndlp->nlp_state;
1177 }
1178
1179 static uint32_t
1180 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1181                              struct lpfc_nodelist *ndlp,
1182                              void *arg,
1183                              uint32_t evt)
1184 {
1185         struct lpfc_hba   *phba = vport->phba;
1186         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1187         LPFC_MBOXQ_t      *mb;
1188         LPFC_MBOXQ_t      *nextmb;
1189         struct lpfc_dmabuf *mp;
1190
1191         cmdiocb = (struct lpfc_iocbq *) arg;
1192
1193         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1194         if ((mb = phba->sli.mbox_active)) {
1195                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1196                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1197                         lpfc_nlp_put(ndlp);
1198                         mb->context2 = NULL;
1199                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1200                 }
1201         }
1202
1203         spin_lock_irq(&phba->hbalock);
1204         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1205                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1206                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1207                         mp = (struct lpfc_dmabuf *) (mb->context1);
1208                         if (mp) {
1209                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1210                                 kfree(mp);
1211                         }
1212                         lpfc_nlp_put(ndlp);
1213                         list_del(&mb->list);
1214                         mempool_free(mb, phba->mbox_mem_pool);
1215                 }
1216         }
1217         spin_unlock_irq(&phba->hbalock);
1218
1219         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1220         return ndlp->nlp_state;
1221 }
1222
1223 static uint32_t
1224 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1225                                struct lpfc_nodelist *ndlp,
1226                                void *arg,
1227                                uint32_t evt)
1228 {
1229         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1230
1231         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1232         return ndlp->nlp_state;
1233 }
1234
1235 static uint32_t
1236 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1237                              struct lpfc_nodelist *ndlp,
1238                              void *arg,
1239                              uint32_t evt)
1240 {
1241         struct lpfc_iocbq *cmdiocb;
1242
1243         cmdiocb = (struct lpfc_iocbq *) arg;
1244         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1245         return ndlp->nlp_state;
1246 }
1247
1248 static uint32_t
1249 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1250                                   struct lpfc_nodelist *ndlp,
1251                                   void *arg,
1252                                   uint32_t evt)
1253 {
1254         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1255         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1256         MAILBOX_t *mb = &pmb->mb;
1257         uint32_t did  = mb->un.varWords[1];
1258
1259         if (mb->mbxStatus) {
1260                 /* RegLogin failed */
1261                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1262                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1263                                 did, mb->mbxStatus, vport->port_state);
1264                 /*
1265                  * If RegLogin failed due to lack of HBA resources do not
1266                  * retry discovery.
1267                  */
1268                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1269                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1270                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1271                         return ndlp->nlp_state;
1272                 }
1273
1274                 /* Put ndlp in npr state set plogi timer for 1 sec */
1275                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1276                 spin_lock_irq(shost->host_lock);
1277                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1278                 spin_unlock_irq(shost->host_lock);
1279                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1280
1281                 lpfc_issue_els_logo(vport, ndlp, 0);
1282                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1283                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1284                 return ndlp->nlp_state;
1285         }
1286
1287         ndlp->nlp_rpi = mb->un.varWords[0];
1288
1289         /* Only if we are not a fabric nport do we issue PRLI */
1290         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1291                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1292                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1293                 lpfc_issue_els_prli(vport, ndlp, 0);
1294         } else {
1295                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1296                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1297         }
1298         return ndlp->nlp_state;
1299 }
1300
1301 static uint32_t
1302 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1303                               struct lpfc_nodelist *ndlp,
1304                               void *arg,
1305                               uint32_t evt)
1306 {
1307         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1308
1309         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1310                 spin_lock_irq(shost->host_lock);
1311                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1312                 spin_unlock_irq(shost->host_lock);
1313                 return ndlp->nlp_state;
1314         } else {
1315                 lpfc_drop_node(vport, ndlp);
1316                 return NLP_STE_FREED_NODE;
1317         }
1318 }
1319
1320 static uint32_t
1321 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1322                                  struct lpfc_nodelist *ndlp,
1323                                  void *arg,
1324                                  uint32_t evt)
1325 {
1326         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1327
1328         /* Don't do anything that will mess up processing of the
1329          * previous RSCN.
1330          */
1331         if (vport->fc_flag & FC_RSCN_DEFERRED)
1332                 return ndlp->nlp_state;
1333
1334         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1335         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1336         spin_lock_irq(shost->host_lock);
1337         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1338         spin_unlock_irq(shost->host_lock);
1339         lpfc_disc_set_adisc(vport, ndlp);
1340         return ndlp->nlp_state;
1341 }
1342
1343 static uint32_t
1344 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1345                           void *arg, uint32_t evt)
1346 {
1347         struct lpfc_iocbq *cmdiocb;
1348
1349         cmdiocb = (struct lpfc_iocbq *) arg;
1350
1351         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1352         return ndlp->nlp_state;
1353 }
1354
1355 static uint32_t
1356 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1357                          void *arg, uint32_t evt)
1358 {
1359         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1360
1361         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1362         return ndlp->nlp_state;
1363 }
1364
1365 static uint32_t
1366 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1367                          void *arg, uint32_t evt)
1368 {
1369         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1370
1371         /* Software abort outstanding PRLI before sending acc */
1372         lpfc_els_abort(vport->phba, ndlp);
1373
1374         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1375         return ndlp->nlp_state;
1376 }
1377
1378 static uint32_t
1379 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1380                            void *arg, uint32_t evt)
1381 {
1382         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1383
1384         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1385         return ndlp->nlp_state;
1386 }
1387
1388 /* This routine is envoked when we rcv a PRLO request from a nport
1389  * we are logged into.  We should send back a PRLO rsp setting the
1390  * appropriate bits.
1391  * NEXT STATE = PRLI_ISSUE
1392  */
1393 static uint32_t
1394 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1395                          void *arg, uint32_t evt)
1396 {
1397         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1398
1399         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1400         return ndlp->nlp_state;
1401 }
1402
1403 static uint32_t
1404 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1405                           void *arg, uint32_t evt)
1406 {
1407         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1408         struct lpfc_iocbq *cmdiocb, *rspiocb;
1409         struct lpfc_hba   *phba = vport->phba;
1410         IOCB_t *irsp;
1411         PRLI *npr;
1412
1413         cmdiocb = (struct lpfc_iocbq *) arg;
1414         rspiocb = cmdiocb->context_un.rsp_iocb;
1415         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1416
1417         irsp = &rspiocb->iocb;
1418         if (irsp->ulpStatus) {
1419                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1420                     vport->cfg_restrict_login) {
1421                         goto out;
1422                 }
1423                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1424                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1425                 return ndlp->nlp_state;
1426         }
1427
1428         /* Check out PRLI rsp */
1429         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1430         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1431         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1432             (npr->prliType == PRLI_FCP_TYPE)) {
1433                 if (npr->initiatorFunc)
1434                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1435                 if (npr->targetFunc)
1436                         ndlp->nlp_type |= NLP_FCP_TARGET;
1437                 if (npr->Retry)
1438                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1439         }
1440         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1441             (vport->port_type == LPFC_NPIV_PORT) &&
1442              vport->cfg_restrict_login) {
1443 out:
1444                 spin_lock_irq(shost->host_lock);
1445                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1446                 spin_unlock_irq(shost->host_lock);
1447                 lpfc_issue_els_logo(vport, ndlp, 0);
1448
1449                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1450                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1451                 return ndlp->nlp_state;
1452         }
1453
1454         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1455         if (ndlp->nlp_type & NLP_FCP_TARGET)
1456                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1457         else
1458                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1459         return ndlp->nlp_state;
1460 }
1461
1462 /*! lpfc_device_rm_prli_issue
1463  *
1464  * \pre
1465  * \post
1466  * \param   phba
1467  * \param   ndlp
1468  * \param   arg
1469  * \param   evt
1470  * \return  uint32_t
1471  *
1472  * \b Description:
1473  *    This routine is envoked when we a request to remove a nport we are in the
1474  *    process of PRLIing. We should software abort outstanding prli, unreg
1475  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1476  *    on plogi list so it can be freed when LOGO completes.
1477  *
1478  */
1479
1480 static uint32_t
1481 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1482                           void *arg, uint32_t evt)
1483 {
1484         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1485
1486         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1487                 spin_lock_irq(shost->host_lock);
1488                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1489                 spin_unlock_irq(shost->host_lock);
1490                 return ndlp->nlp_state;
1491         } else {
1492                 /* software abort outstanding PLOGI */
1493                 lpfc_els_abort(vport->phba, ndlp);
1494
1495                 lpfc_drop_node(vport, ndlp);
1496                 return NLP_STE_FREED_NODE;
1497         }
1498 }
1499
1500
1501 /*! lpfc_device_recov_prli_issue
1502  *
1503  * \pre
1504  * \post
1505  * \param   phba
1506  * \param   ndlp
1507  * \param   arg
1508  * \param   evt
1509  * \return  uint32_t
1510  *
1511  * \b Description:
1512  *    The routine is envoked when the state of a device is unknown, like
1513  *    during a link down. We should remove the nodelist entry from the
1514  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1515  *    outstanding PRLI command, then free the node entry.
1516  */
1517 static uint32_t
1518 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1519                              struct lpfc_nodelist *ndlp,
1520                              void *arg,
1521                              uint32_t evt)
1522 {
1523         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1524         struct lpfc_hba  *phba = vport->phba;
1525
1526         /* Don't do anything that will mess up processing of the
1527          * previous RSCN.
1528          */
1529         if (vport->fc_flag & FC_RSCN_DEFERRED)
1530                 return ndlp->nlp_state;
1531
1532         /* software abort outstanding PRLI */
1533         lpfc_els_abort(phba, ndlp);
1534
1535         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1536         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1537         spin_lock_irq(shost->host_lock);
1538         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1539         spin_unlock_irq(shost->host_lock);
1540         lpfc_disc_set_adisc(vport, ndlp);
1541         return ndlp->nlp_state;
1542 }
1543
1544 static uint32_t
1545 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1546                           void *arg, uint32_t evt)
1547 {
1548         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1549
1550         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1551         return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1556                          void *arg, uint32_t evt)
1557 {
1558         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1559
1560         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1561         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1562         return ndlp->nlp_state;
1563 }
1564
1565 static uint32_t
1566 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1567                          void *arg, uint32_t evt)
1568 {
1569         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1570
1571         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1572         return ndlp->nlp_state;
1573 }
1574
1575 static uint32_t
1576 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1577                            void *arg, uint32_t evt)
1578 {
1579         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1580
1581         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1582         return ndlp->nlp_state;
1583 }
1584
1585 static uint32_t
1586 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1587                          void *arg, uint32_t evt)
1588 {
1589         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1590
1591         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1592         return ndlp->nlp_state;
1593 }
1594
1595 static uint32_t
1596 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1597                              struct lpfc_nodelist *ndlp,
1598                              void *arg,
1599                              uint32_t evt)
1600 {
1601         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1602
1603         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1604         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1605         spin_lock_irq(shost->host_lock);
1606         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1607         spin_unlock_irq(shost->host_lock);
1608         lpfc_disc_set_adisc(vport, ndlp);
1609
1610         return ndlp->nlp_state;
1611 }
1612
1613 static uint32_t
1614 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1615                            void *arg, uint32_t evt)
1616 {
1617         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1618
1619         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1620         return ndlp->nlp_state;
1621 }
1622
1623 static uint32_t
1624 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1625                           void *arg, uint32_t evt)
1626 {
1627         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1628
1629         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1630         return ndlp->nlp_state;
1631 }
1632
1633 static uint32_t
1634 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1635                           void *arg, uint32_t evt)
1636 {
1637         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1638
1639         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1640         return ndlp->nlp_state;
1641 }
1642
1643 static uint32_t
1644 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1645                             struct lpfc_nodelist *ndlp,
1646                             void *arg, uint32_t evt)
1647 {
1648         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1649
1650         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1651         return ndlp->nlp_state;
1652 }
1653
1654 static uint32_t
1655 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1656                           void *arg, uint32_t evt)
1657 {
1658         struct lpfc_hba  *phba = vport->phba;
1659         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1660
1661         /* flush the target */
1662         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1663                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1664
1665         /* Treat like rcv logo */
1666         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1667         return ndlp->nlp_state;
1668 }
1669
1670 static uint32_t
1671 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1672                               struct lpfc_nodelist *ndlp,
1673                               void *arg,
1674                               uint32_t evt)
1675 {
1676         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1677
1678         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1679         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1680         spin_lock_irq(shost->host_lock);
1681         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1682         spin_unlock_irq(shost->host_lock);
1683         lpfc_disc_set_adisc(vport, ndlp);
1684         return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1689                         void *arg, uint32_t evt)
1690 {
1691         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1692         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1693
1694         /* Ignore PLOGI if we have an outstanding LOGO */
1695         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1696                 return ndlp->nlp_state;
1697         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1698                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1699                 spin_lock_irq(shost->host_lock);
1700                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1701                 spin_unlock_irq(shost->host_lock);
1702         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1703                 /* send PLOGI immediately, move to PLOGI issue state */
1704                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1705                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1706                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1707                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1708                 }
1709         }
1710         return ndlp->nlp_state;
1711 }
1712
1713 static uint32_t
1714 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1715                        void *arg, uint32_t evt)
1716 {
1717         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1718         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1719         struct ls_rjt     stat;
1720
1721         memset(&stat, 0, sizeof (struct ls_rjt));
1722         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1723         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1724         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1725
1726         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1727                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1728                         spin_lock_irq(shost->host_lock);
1729                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1730                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1731                         spin_unlock_irq(shost->host_lock);
1732                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1733                         lpfc_issue_els_adisc(vport, ndlp, 0);
1734                 } else {
1735                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1736                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1737                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1738                 }
1739         }
1740         return ndlp->nlp_state;
1741 }
1742
1743 static uint32_t
1744 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1745                        void *arg, uint32_t evt)
1746 {
1747         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1748
1749         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1750         return ndlp->nlp_state;
1751 }
1752
1753 static uint32_t
1754 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1755                          void *arg, uint32_t evt)
1756 {
1757         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1758
1759         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1760         /*
1761          * Do not start discovery if discovery is about to start
1762          * or discovery in progress for this node. Starting discovery
1763          * here will affect the counting of discovery threads.
1764          */
1765         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1766             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1767                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1768                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1769                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1770                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1771                         lpfc_issue_els_adisc(vport, ndlp, 0);
1772                 } else {
1773                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1774                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1775                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1776                 }
1777         }
1778         return ndlp->nlp_state;
1779 }
1780
1781 static uint32_t
1782 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1783                        void *arg, uint32_t evt)
1784 {
1785         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1786         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1787
1788         spin_lock_irq(shost->host_lock);
1789         ndlp->nlp_flag |= NLP_LOGO_ACC;
1790         spin_unlock_irq(shost->host_lock);
1791
1792         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1793
1794         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1795                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1796                 spin_lock_irq(shost->host_lock);
1797                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1798                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1799                 spin_unlock_irq(shost->host_lock);
1800                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1801         } else {
1802                 spin_lock_irq(shost->host_lock);
1803                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1804                 spin_unlock_irq(shost->host_lock);
1805         }
1806         return ndlp->nlp_state;
1807 }
1808
1809 static uint32_t
1810 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1811                          void *arg, uint32_t evt)
1812 {
1813         struct lpfc_iocbq *cmdiocb, *rspiocb;
1814         IOCB_t *irsp;
1815
1816         cmdiocb = (struct lpfc_iocbq *) arg;
1817         rspiocb = cmdiocb->context_un.rsp_iocb;
1818
1819         irsp = &rspiocb->iocb;
1820         if (irsp->ulpStatus) {
1821                 ndlp->nlp_flag |= NLP_DEFER_RM;
1822                 return NLP_STE_FREED_NODE;
1823         }
1824         return ndlp->nlp_state;
1825 }
1826
1827 static uint32_t
1828 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1829                         void *arg, uint32_t evt)
1830 {
1831         struct lpfc_iocbq *cmdiocb, *rspiocb;
1832         IOCB_t *irsp;
1833
1834         cmdiocb = (struct lpfc_iocbq *) arg;
1835         rspiocb = cmdiocb->context_un.rsp_iocb;
1836
1837         irsp = &rspiocb->iocb;
1838         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1839                 lpfc_drop_node(vport, ndlp);
1840                 return NLP_STE_FREED_NODE;
1841         }
1842         return ndlp->nlp_state;
1843 }
1844
1845 static uint32_t
1846 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1847                         void *arg, uint32_t evt)
1848 {
1849         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1850         if (ndlp->nlp_DID == Fabric_DID) {
1851                 spin_lock_irq(shost->host_lock);
1852                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1853                 spin_unlock_irq(shost->host_lock);
1854         }
1855         lpfc_unreg_rpi(vport, ndlp);
1856         return ndlp->nlp_state;
1857 }
1858
1859 static uint32_t
1860 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1861                          void *arg, uint32_t evt)
1862 {
1863         struct lpfc_iocbq *cmdiocb, *rspiocb;
1864         IOCB_t *irsp;
1865
1866         cmdiocb = (struct lpfc_iocbq *) arg;
1867         rspiocb = cmdiocb->context_un.rsp_iocb;
1868
1869         irsp = &rspiocb->iocb;
1870         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1871                 lpfc_drop_node(vport, ndlp);
1872                 return NLP_STE_FREED_NODE;
1873         }
1874         return ndlp->nlp_state;
1875 }
1876
1877 static uint32_t
1878 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1879                             struct lpfc_nodelist *ndlp,
1880                             void *arg, uint32_t evt)
1881 {
1882         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1883         MAILBOX_t    *mb = &pmb->mb;
1884
1885         if (!mb->mbxStatus)
1886                 ndlp->nlp_rpi = mb->un.varWords[0];
1887         else {
1888                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1889                         lpfc_drop_node(vport, ndlp);
1890                         return NLP_STE_FREED_NODE;
1891                 }
1892         }
1893         return ndlp->nlp_state;
1894 }
1895
1896 static uint32_t
1897 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1898                         void *arg, uint32_t evt)
1899 {
1900         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1901
1902         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1903                 spin_lock_irq(shost->host_lock);
1904                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1905                 spin_unlock_irq(shost->host_lock);
1906                 return ndlp->nlp_state;
1907         }
1908         lpfc_drop_node(vport, ndlp);
1909         return NLP_STE_FREED_NODE;
1910 }
1911
1912 static uint32_t
1913 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1914                            void *arg, uint32_t evt)
1915 {
1916         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1917
1918         /* Don't do anything that will mess up processing of the
1919          * previous RSCN.
1920          */
1921         if (vport->fc_flag & FC_RSCN_DEFERRED)
1922                 return ndlp->nlp_state;
1923
1924         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1925         spin_lock_irq(shost->host_lock);
1926         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1927         spin_unlock_irq(shost->host_lock);
1928         return ndlp->nlp_state;
1929 }
1930
1931
1932 /* This next section defines the NPort Discovery State Machine */
1933
1934 /* There are 4 different double linked lists nodelist entries can reside on.
1935  * The plogi list and adisc list are used when Link Up discovery or RSCN
1936  * processing is needed. Each list holds the nodes that we will send PLOGI
1937  * or ADISC on. These lists will keep track of what nodes will be effected
1938  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1939  * The unmapped_list will contain all nodes that we have successfully logged
1940  * into at the Fibre Channel level. The mapped_list will contain all nodes
1941  * that are mapped FCP targets.
1942  */
1943 /*
1944  * The bind list is a list of undiscovered (potentially non-existent) nodes
1945  * that we have saved binding information on. This information is used when
1946  * nodes transition from the unmapped to the mapped list.
1947  */
1948 /* For UNUSED_NODE state, the node has just been allocated .
1949  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1950  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1951  * and put on the unmapped list. For ADISC processing, the node is taken off
1952  * the ADISC list and placed on either the mapped or unmapped list (depending
1953  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1954  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1955  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1956  * node, the node is taken off the unmapped list. The binding list is checked
1957  * for a valid binding, or a binding is automatically assigned. If binding
1958  * assignment is unsuccessful, the node is left on the unmapped list. If
1959  * binding assignment is successful, the associated binding list entry (if
1960  * any) is removed, and the node is placed on the mapped list.
1961  */
1962 /*
1963  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1964  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1965  * expire, all effected nodes will receive a DEVICE_RM event.
1966  */
1967 /*
1968  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1969  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1970  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1971  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1972  * we will first process the ADISC list.  32 entries are processed initially and
1973  * ADISC is initited for each one.  Completions / Events for each node are
1974  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1975  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1976  * waiting, and the ADISC list count is identically 0, then we are done. For
1977  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1978  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1979  * list.  32 entries are processed initially and PLOGI is initited for each one.
1980  * Completions / Events for each node are funnelled thru the state machine.  As
1981  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1982  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1983  * indentically 0, then we are done. We have now completed discovery / RSCN
1984  * handling. Upon completion, ALL nodes should be on either the mapped or
1985  * unmapped lists.
1986  */
1987
1988 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1989      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1990         /* Action routine                  Event       Current State  */
1991         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1992         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1993         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1994         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1995         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1996         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1997         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1998         lpfc_disc_illegal,              /* CMPL_PRLI       */
1999         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2000         lpfc_disc_illegal,              /* CMPL_ADISC      */
2001         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2002         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2003         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2004
2005         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2006         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2007         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2008         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2009         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2010         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2011         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2012         lpfc_disc_illegal,              /* CMPL_PRLI       */
2013         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2014         lpfc_disc_illegal,              /* CMPL_ADISC      */
2015         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2016         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2017         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2018
2019         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2020         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2021         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2022         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2023         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2024         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2025         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2026         lpfc_disc_illegal,              /* CMPL_PRLI       */
2027         lpfc_disc_illegal,              /* CMPL_LOGO       */
2028         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2029         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2030         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2031         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2032
2033         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2034         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2035         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2036         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2037         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2038         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2039         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2040         lpfc_disc_illegal,              /* CMPL_PRLI       */
2041         lpfc_disc_illegal,              /* CMPL_LOGO       */
2042         lpfc_disc_illegal,              /* CMPL_ADISC      */
2043         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2044         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2045         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2046
2047         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2048         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2049         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2050         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2051         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2052         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2053         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2054         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2055         lpfc_disc_illegal,              /* CMPL_LOGO       */
2056         lpfc_disc_illegal,              /* CMPL_ADISC      */
2057         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2058         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2059         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2060
2061         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2062         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2063         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2064         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2065         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2066         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2067         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2068         lpfc_disc_illegal,              /* CMPL_PRLI       */
2069         lpfc_disc_illegal,              /* CMPL_LOGO       */
2070         lpfc_disc_illegal,              /* CMPL_ADISC      */
2071         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2072         lpfc_disc_illegal,              /* DEVICE_RM       */
2073         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2074
2075         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2076         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2077         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2078         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2079         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2080         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2081         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2082         lpfc_disc_illegal,              /* CMPL_PRLI       */
2083         lpfc_disc_illegal,              /* CMPL_LOGO       */
2084         lpfc_disc_illegal,              /* CMPL_ADISC      */
2085         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2086         lpfc_disc_illegal,              /* DEVICE_RM       */
2087         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2088
2089         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2090         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2091         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2092         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2093         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2094         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2095         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2096         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2097         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2098         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2099         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2100         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2101         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2102 };
2103
2104 int
2105 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2106                         void *arg, uint32_t evt)
2107 {
2108         uint32_t cur_state, rc;
2109         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2110                          uint32_t);
2111         uint32_t got_ndlp = 0;
2112
2113         if (lpfc_nlp_get(ndlp))
2114                 got_ndlp = 1;
2115
2116         cur_state = ndlp->nlp_state;
2117
2118         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2119         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2120                          "0211 DSM in event x%x on NPort x%x in "
2121                          "state %d Data: x%x\n",
2122                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2123
2124         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2125                  "DSM in:          evt:%d ste:%d did:x%x",
2126                 evt, cur_state, ndlp->nlp_DID);
2127
2128         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2129         rc = (func) (vport, ndlp, arg, evt);
2130
2131         /* DSM out state <rc> on NPort <nlp_DID> */
2132         if (got_ndlp) {
2133                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2134                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2135                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2136
2137                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2138                         "DSM out:         ste:%d did:x%x flg:x%x",
2139                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2140                 /* Decrement the ndlp reference count held for this function */
2141                 lpfc_nlp_put(ndlp);
2142         } else {
2143                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2144                         "0213 DSM out state %d on NPort free\n", rc);
2145
2146                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2147                         "DSM out:         ste:%d did:x%x flg:x%x",
2148                         rc, 0, 0);
2149         }
2150
2151         return rc;
2152 }