Pileus Git - ~andy/linux/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) 2004-2009 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_rpi(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         if ((ndlp->nlp_DID == Fabric_DID) &&
 501                 vport->port_type == LPFC_NPIV_PORT) {
 502                 lpfc_linkdown_port(vport);
 503                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 504                 spin_lock_irq(shost->host_lock);
 505                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 506                 spin_unlock_irq(shost->host_lock);
 507
 508                 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 509         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 510                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 511                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 512                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 513                 /* Only try to re-login if this is NOT a Fabric Node */
 514                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 515                 spin_lock_irq(shost->host_lock);
 516                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 517                 spin_unlock_irq(shost->host_lock);
 518
 519                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 520         }
 521         ndlp->nlp_prev_state = ndlp->nlp_state;
 522         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 523
 524         spin_lock_irq(shost->host_lock);
 525         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 526         spin_unlock_irq(shost->host_lock);
 527         /* The driver has to wait until the ACC completes before it continues
 528          * processing the LOGO.  The action will resume in
 529          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 530          * unreg_login, the driver waits so the ACC does not get aborted.
 531          */
 532         return 0;
 533 }
 534
 535 static void
 536 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 537               struct lpfc_iocbq *cmdiocb)
 538 {
 539         struct lpfc_dmabuf *pcmd;
 540         uint32_t *lp;
 541         PRLI *npr;
 542         struct fc_rport *rport = ndlp->rport;
 543         u32 roles;
 544
 545         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 546         lp = (uint32_t *) pcmd->virt;
 547         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 548
 549         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 550         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 551         if (npr->prliType == PRLI_FCP_TYPE) {
 552                 if (npr->initiatorFunc)
 553                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 554                 if (npr->targetFunc)
 555                         ndlp->nlp_type |= NLP_FCP_TARGET;
 556                 if (npr->Retry)
 557                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 558         }
 559         if (rport) {
 560                 /* We need to update the rport role values */
 561                 roles = FC_RPORT_ROLE_UNKNOWN;
 562                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 563                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 564                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 565                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 566
 567                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 568                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 569                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 570
 571                 fc_remote_port_rolechg(rport, roles);
 572         }
 573 }
 574
 575 static uint32_t
 576 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 577 {
 578         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 579
 580         if (!(ndlp->nlp_flag & NLP_RPI_VALID)) {
 581                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 582                 return 0;
 583         }
 584
 585         if (!(vport->fc_flag & FC_PT2PT)) {
 586                 /* Check config parameter use-adisc or FCP-2 */
 587                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 588                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 589                         spin_lock_irq(shost->host_lock);
 590                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 591                         spin_unlock_irq(shost->host_lock);
 592                         return 1;
 593                 }
 594         }
 595         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 596         lpfc_unreg_rpi(vport, ndlp);
 597         return 0;
 598 }
 599
 600 static uint32_t
 601 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 602                   void *arg, uint32_t evt)
 603 {
 604         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 605                          "0271 Illegal State Transition: node x%x "
 606                          "event x%x, state x%x Data: x%x x%x\n",
 607                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 608                          ndlp->nlp_flag);
 609         return ndlp->nlp_state;
 610 }
 611
 612 static uint32_t
 613 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 614                   void *arg, uint32_t evt)
 615 {
 616         /* This transition is only legal if we previously
 617          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 618          * working on the same NPortID, do nothing for this thread
 619          * to stop it.
 620          */
 621         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 622                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 623                          "0272 Illegal State Transition: node x%x "
 624                          "event x%x, state x%x Data: x%x x%x\n",
 625                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 626                          ndlp->nlp_flag);
 627         }
 628         return ndlp->nlp_state;
 629 }
 630
 631 /* Start of Discovery State Machine routines */
 632
 633 static uint32_t
 634 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 635                            void *arg, uint32_t evt)
 636 {
 637         struct lpfc_iocbq *cmdiocb;
 638
 639         cmdiocb = (struct lpfc_iocbq *) arg;
 640
 641         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 642                 return ndlp->nlp_state;
 643         }
 644         return NLP_STE_FREED_NODE;
 645 }
 646
 647 static uint32_t
 648 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 649                          void *arg, uint32_t evt)
 650 {
 651         lpfc_issue_els_logo(vport, ndlp, 0);
 652         return ndlp->nlp_state;
 653 }
 654
 655 static uint32_t
 656 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 657                           void *arg, uint32_t evt)
 658 {
 659         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 660         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 661
 662         spin_lock_irq(shost->host_lock);
 663         ndlp->nlp_flag |= NLP_LOGO_ACC;
 664         spin_unlock_irq(shost->host_lock);
 665         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 666
 667         return ndlp->nlp_state;
 668 }
 669
 670 static uint32_t
 671 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 672                            void *arg, uint32_t evt)
 673 {
 674         return NLP_STE_FREED_NODE;
 675 }
 676
 677 static uint32_t
 678 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 679                            void *arg, uint32_t evt)
 680 {
 681         return NLP_STE_FREED_NODE;
 682 }
 683
 684 static uint32_t
 685 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 686                            void *arg, uint32_t evt)
 687 {
 688         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 689         struct lpfc_hba   *phba = vport->phba;
 690         struct lpfc_iocbq *cmdiocb = arg;
 691         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 692         uint32_t *lp = (uint32_t *) pcmd->virt;
 693         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 694         struct ls_rjt stat;
 695         int port_cmp;
 696
 697         memset(&stat, 0, sizeof (struct ls_rjt));
 698
 699         /* For a PLOGI, we only accept if our portname is less
 700          * than the remote portname.
 701          */
 702         phba->fc_stat.elsLogiCol++;
 703         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 704                           sizeof(struct lpfc_name));
 705
 706         if (port_cmp >= 0) {
 707                 /* Reject this request because the remote node will accept
 708                    ours */
 709                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 710                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 711                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 712                         NULL);
 713         } else {
 714                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 715                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 716                     (vport->num_disc_nodes)) {
 717                         spin_lock_irq(shost->host_lock);
 718                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 719                         spin_unlock_irq(shost->host_lock);
 720                         /* Check if there are more PLOGIs to be sent */
 721                         lpfc_more_plogi(vport);
 722                         if (vport->num_disc_nodes == 0) {
 723                                 spin_lock_irq(shost->host_lock);
 724                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 725                                 spin_unlock_irq(shost->host_lock);
 726                                 lpfc_can_disctmo(vport);
 727                                 lpfc_end_rscn(vport);
 728                         }
 729                 }
 730         } /* If our portname was less */
 731
 732         return ndlp->nlp_state;
 733 }
 734
 735 static uint32_t
 736 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 737                           void *arg, uint32_t evt)
 738 {
 739         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 740         struct ls_rjt     stat;
 741
 742         memset(&stat, 0, sizeof (struct ls_rjt));
 743         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 744         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 745         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 746         return ndlp->nlp_state;
 747 }
 748
 749 static uint32_t
 750 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 751                           void *arg, uint32_t evt)
 752 {
 753         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 754
 755                                 /* software abort outstanding PLOGI */
 756         lpfc_els_abort(vport->phba, ndlp);
 757
 758         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 759         return ndlp->nlp_state;
 760 }
 761
 762 static uint32_t
 763 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 764                          void *arg, uint32_t evt)
 765 {
 766         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 767         struct lpfc_hba   *phba = vport->phba;
 768         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 769
 770         /* software abort outstanding PLOGI */
 771         lpfc_els_abort(phba, ndlp);
 772
 773         if (evt == NLP_EVT_RCV_LOGO) {
 774                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 775         } else {
 776                 lpfc_issue_els_logo(vport, ndlp, 0);
 777         }
 778
 779         /* Put ndlp in npr state set plogi timer for 1 sec */
 780         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 781         spin_lock_irq(shost->host_lock);
 782         ndlp->nlp_flag |= NLP_DELAY_TMO;
 783         spin_unlock_irq(shost->host_lock);
 784         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 785         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 786         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 787
 788         return ndlp->nlp_state;
 789 }
 790
 791 static uint32_t
 792 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 793                             struct lpfc_nodelist *ndlp,
 794                             void *arg,
 795                             uint32_t evt)
 796 {
 797         struct lpfc_hba    *phba = vport->phba;
 798         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 799         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 800         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 801         uint32_t *lp;
 802         IOCB_t *irsp;
 803         struct serv_parm *sp;
 804         LPFC_MBOXQ_t *mbox;
 805
 806         cmdiocb = (struct lpfc_iocbq *) arg;
 807         rspiocb = cmdiocb->context_un.rsp_iocb;
 808
 809         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 810                 /* Recovery from PLOGI collision logic */
 811                 return ndlp->nlp_state;
 812         }
 813
 814         irsp = &rspiocb->iocb;
 815
 816         if (irsp->ulpStatus)
 817                 goto out;
 818
 819         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 820
 821         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 822
 823         lp = (uint32_t *) prsp->virt;
 824         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 825
 826         /* Some switches have FDMI servers returning 0 for WWN */
 827         if ((ndlp->nlp_DID != FDMI_DID) &&
 828                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
 829                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
 830                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 831                                  "0142 PLOGI RSP: Invalid WWN.\n");
 832                 goto out;
 833         }
 834         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 835                 goto out;
 836         /* PLOGI chkparm OK */
 837         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 838                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 839                          ndlp->nlp_DID, ndlp->nlp_state,
 840                          ndlp->nlp_flag, ndlp->nlp_rpi);
 841         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 842                 ndlp->nlp_fcp_info |= CLASS2;
 843         else
 844                 ndlp->nlp_fcp_info |= CLASS3;
 845
 846         ndlp->nlp_class_sup = 0;
 847         if (sp->cls1.classValid)
 848                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 849         if (sp->cls2.classValid)
 850                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 851         if (sp->cls3.classValid)
 852                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 853         if (sp->cls4.classValid)
 854                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 855         ndlp->nlp_maxframe =
 856                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 857
 858         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 859         if (!mbox) {
 860                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 861                         "0133 PLOGI: no memory for reg_login "
 862                         "Data: x%x x%x x%x x%x\n",
 863                         ndlp->nlp_DID, ndlp->nlp_state,
 864                         ndlp->nlp_flag, ndlp->nlp_rpi);
 865                 goto out;
 866         }
 867
 868         lpfc_unreg_rpi(vport, ndlp);
 869
 870         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 871                            (uint8_t *) sp, mbox, 0) == 0) {
 872                 switch (ndlp->nlp_DID) {
 873                 case NameServer_DID:
 874                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 875                         break;
 876                 case FDMI_DID:
 877                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 878                         break;
 879                 default:
 880                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 881                 }
 882                 mbox->context2 = lpfc_nlp_get(ndlp);
 883                 mbox->vport = vport;
 884                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 885                     != MBX_NOT_FINISHED) {
 886                         lpfc_nlp_set_state(vport, ndlp,
 887                                            NLP_STE_REG_LOGIN_ISSUE);
 888                         return ndlp->nlp_state;
 889                 }
 890                 /* decrement node reference count to the failed mbox
 891                  * command
 892                  */
 893                 lpfc_nlp_put(ndlp);
 894                 mp = (struct lpfc_dmabuf *) mbox->context1;
 895                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 896                 kfree(mp);
 897                 mempool_free(mbox, phba->mbox_mem_pool);
 898
 899                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 900                                  "0134 PLOGI: cannot issue reg_login "
 901                                  "Data: x%x x%x x%x x%x\n",
 902                                  ndlp->nlp_DID, ndlp->nlp_state,
 903                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 904         } else {
 905                 mempool_free(mbox, phba->mbox_mem_pool);
 906
 907                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 908                                  "0135 PLOGI: cannot format reg_login "
 909                                  "Data: x%x x%x x%x x%x\n",
 910                                  ndlp->nlp_DID, ndlp->nlp_state,
 911                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 912         }
 913
 914
 915 out:
 916         if (ndlp->nlp_DID == NameServer_DID) {
 917                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 918                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 919                                  "0261 Cannot Register NameServer login\n");
 920         }
 921
 922         spin_lock_irq(shost->host_lock);
 923         ndlp->nlp_flag |= NLP_DEFER_RM;
 924         spin_unlock_irq(shost->host_lock);
 925         return NLP_STE_FREED_NODE;
 926 }
 927
 928 static uint32_t
 929 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 930                            void *arg, uint32_t evt)
 931 {
 932         return ndlp->nlp_state;
 933 }
 934
 935 static uint32_t
 936 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
 937         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
 938 {
 939         return ndlp->nlp_state;
 940 }
 941
 942 static uint32_t
 943 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 944                            void *arg, uint32_t evt)
 945 {
 946         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 947
 948         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 949                 spin_lock_irq(shost->host_lock);
 950                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 951                 spin_unlock_irq(shost->host_lock);
 952                 return ndlp->nlp_state;
 953         } else {
 954                 /* software abort outstanding PLOGI */
 955                 lpfc_els_abort(vport->phba, ndlp);
 956
 957                 lpfc_drop_node(vport, ndlp);
 958                 return NLP_STE_FREED_NODE;
 959         }
 960 }
 961
 962 static uint32_t
 963 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 964                               struct lpfc_nodelist *ndlp,
 965                               void *arg,
 966                               uint32_t evt)
 967 {
 968         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 969         struct lpfc_hba  *phba = vport->phba;
 970
 971         /* Don't do anything that will mess up processing of the
 972          * previous RSCN.
 973          */
 974         if (vport->fc_flag & FC_RSCN_DEFERRED)
 975                 return ndlp->nlp_state;
 976
 977         /* software abort outstanding PLOGI */
 978         lpfc_els_abort(phba, ndlp);
 979
 980         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 981         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 982         spin_lock_irq(shost->host_lock);
 983         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 984         spin_unlock_irq(shost->host_lock);
 985
 986         return ndlp->nlp_state;
 987 }
 988
 989 static uint32_t
 990 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 991                            void *arg, uint32_t evt)
 992 {
 993         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 994         struct lpfc_hba   *phba = vport->phba;
 995         struct lpfc_iocbq *cmdiocb;
 996
 997         /* software abort outstanding ADISC */
 998         lpfc_els_abort(phba, ndlp);
 999
1000         cmdiocb = (struct lpfc_iocbq *) arg;
1001
1002         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1003                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1004                         spin_lock_irq(shost->host_lock);
1005                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1006                         spin_unlock_irq(shost->host_lock);
1007                         if (vport->num_disc_nodes)
1008                                 lpfc_more_adisc(vport);
1009                 }
1010                 return ndlp->nlp_state;
1011         }
1012         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1013         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1014         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1015
1016         return ndlp->nlp_state;
1017 }
1018
1019 static uint32_t
1020 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1021                           void *arg, uint32_t evt)
1022 {
1023         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1024
1025         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1026         return ndlp->nlp_state;
1027 }
1028
1029 static uint32_t
1030 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1031                           void *arg, uint32_t evt)
1032 {
1033         struct lpfc_hba *phba = vport->phba;
1034         struct lpfc_iocbq *cmdiocb;
1035
1036         cmdiocb = (struct lpfc_iocbq *) arg;
1037
1038         /* software abort outstanding ADISC */
1039         lpfc_els_abort(phba, ndlp);
1040
1041         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1042         return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1047                             struct lpfc_nodelist *ndlp,
1048                             void *arg, uint32_t evt)
1049 {
1050         struct lpfc_iocbq *cmdiocb;
1051
1052         cmdiocb = (struct lpfc_iocbq *) arg;
1053
1054         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1055         return ndlp->nlp_state;
1056 }
1057
1058 static uint32_t
1059 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1060                           void *arg, uint32_t evt)
1061 {
1062         struct lpfc_iocbq *cmdiocb;
1063
1064         cmdiocb = (struct lpfc_iocbq *) arg;
1065
1066         /* Treat like rcv logo */
1067         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1068         return ndlp->nlp_state;
1069 }
1070
1071 static uint32_t
1072 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1073                             struct lpfc_nodelist *ndlp,
1074                             void *arg, uint32_t evt)
1075 {
1076         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1077         struct lpfc_hba   *phba = vport->phba;
1078         struct lpfc_iocbq *cmdiocb, *rspiocb;
1079         IOCB_t *irsp;
1080         ADISC *ap;
1081         int rc;
1082
1083         cmdiocb = (struct lpfc_iocbq *) arg;
1084         rspiocb = cmdiocb->context_un.rsp_iocb;
1085
1086         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1087         irsp = &rspiocb->iocb;
1088
1089         if ((irsp->ulpStatus) ||
1090             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1091                 /* 1 sec timeout */
1092                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1093                 spin_lock_irq(shost->host_lock);
1094                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1095                 spin_unlock_irq(shost->host_lock);
1096                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1097
1098                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1099                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1100
1101                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1102                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1103                 lpfc_unreg_rpi(vport, ndlp);
1104                 return ndlp->nlp_state;
1105         }
1106
1107         if (phba->sli_rev == LPFC_SLI_REV4) {
1108                 rc = lpfc_sli4_resume_rpi(ndlp);
1109                 if (rc) {
1110                         /* Stay in state and retry. */
1111                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1112                         return ndlp->nlp_state;
1113                 }
1114         }
1115
1116         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1117                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1118                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1119         } else {
1120                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1121                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1122         }
1123
1124         return ndlp->nlp_state;
1125 }
1126
1127 static uint32_t
1128 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1129                            void *arg, uint32_t evt)
1130 {
1131         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1132
1133         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1134                 spin_lock_irq(shost->host_lock);
1135                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1136                 spin_unlock_irq(shost->host_lock);
1137                 return ndlp->nlp_state;
1138         } else {
1139                 /* software abort outstanding ADISC */
1140                 lpfc_els_abort(vport->phba, ndlp);
1141
1142                 lpfc_drop_node(vport, ndlp);
1143                 return NLP_STE_FREED_NODE;
1144         }
1145 }
1146
1147 static uint32_t
1148 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1149                               struct lpfc_nodelist *ndlp,
1150                               void *arg,
1151                               uint32_t evt)
1152 {
1153         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1154         struct lpfc_hba  *phba = vport->phba;
1155
1156         /* Don't do anything that will mess up processing of the
1157          * previous RSCN.
1158          */
1159         if (vport->fc_flag & FC_RSCN_DEFERRED)
1160                 return ndlp->nlp_state;
1161
1162         /* software abort outstanding ADISC */
1163         lpfc_els_abort(phba, ndlp);
1164
1165         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1166         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1167         spin_lock_irq(shost->host_lock);
1168         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1169         spin_unlock_irq(shost->host_lock);
1170         lpfc_disc_set_adisc(vport, ndlp);
1171         return ndlp->nlp_state;
1172 }
1173
1174 static uint32_t
1175 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1176                               struct lpfc_nodelist *ndlp,
1177                               void *arg,
1178                               uint32_t evt)
1179 {
1180         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1181
1182         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1183         return ndlp->nlp_state;
1184 }
1185
1186 static uint32_t
1187 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1188                              struct lpfc_nodelist *ndlp,
1189                              void *arg,
1190                              uint32_t evt)
1191 {
1192         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1193
1194         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1195         return ndlp->nlp_state;
1196 }
1197
1198 static uint32_t
1199 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1200                              struct lpfc_nodelist *ndlp,
1201                              void *arg,
1202                              uint32_t evt)
1203 {
1204         struct lpfc_hba   *phba = vport->phba;
1205         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1206         LPFC_MBOXQ_t      *mb;
1207         LPFC_MBOXQ_t      *nextmb;
1208         struct lpfc_dmabuf *mp;
1209
1210         cmdiocb = (struct lpfc_iocbq *) arg;
1211
1212         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1213         if ((mb = phba->sli.mbox_active)) {
1214                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1215                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1216                         lpfc_nlp_put(ndlp);
1217                         mb->context2 = NULL;
1218                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1219                 }
1220         }
1221
1222         spin_lock_irq(&phba->hbalock);
1223         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1224                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1225                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1226                         if (phba->sli_rev == LPFC_SLI_REV4) {
1227                                 spin_unlock_irq(&phba->hbalock);
1228                                 lpfc_sli4_free_rpi(phba,
1229                                         mb->u.mb.un.varRegLogin.rpi);
1230                                 spin_lock_irq(&phba->hbalock);
1231                         }
1232                         mp = (struct lpfc_dmabuf *) (mb->context1);
1233                         if (mp) {
1234                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1235                                 kfree(mp);
1236                         }
1237                         lpfc_nlp_put(ndlp);
1238                         list_del(&mb->list);
1239                         phba->sli.mboxq_cnt--;
1240                         mempool_free(mb, phba->mbox_mem_pool);
1241                 }
1242         }
1243         spin_unlock_irq(&phba->hbalock);
1244
1245         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1246         return ndlp->nlp_state;
1247 }
1248
1249 static uint32_t
1250 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1251                                struct lpfc_nodelist *ndlp,
1252                                void *arg,
1253                                uint32_t evt)
1254 {
1255         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1256
1257         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1258         return ndlp->nlp_state;
1259 }
1260
1261 static uint32_t
1262 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1263                              struct lpfc_nodelist *ndlp,
1264                              void *arg,
1265                              uint32_t evt)
1266 {
1267         struct lpfc_iocbq *cmdiocb;
1268
1269         cmdiocb = (struct lpfc_iocbq *) arg;
1270         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1271         return ndlp->nlp_state;
1272 }
1273
1274 static uint32_t
1275 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1276                                   struct lpfc_nodelist *ndlp,
1277                                   void *arg,
1278                                   uint32_t evt)
1279 {
1280         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1281         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1282         MAILBOX_t *mb = &pmb->u.mb;
1283         uint32_t did  = mb->un.varWords[1];
1284
1285         if (mb->mbxStatus) {
1286                 /* RegLogin failed */
1287                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1288                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1289                                 did, mb->mbxStatus, vport->port_state);
1290                 /*
1291                  * If RegLogin failed due to lack of HBA resources do not
1292                  * retry discovery.
1293                  */
1294                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1295                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1296                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1297                         return ndlp->nlp_state;
1298                 }
1299
1300                 /* Put ndlp in npr state set plogi timer for 1 sec */
1301                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1302                 spin_lock_irq(shost->host_lock);
1303                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1304                 spin_unlock_irq(shost->host_lock);
1305                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1306
1307                 lpfc_issue_els_logo(vport, ndlp, 0);
1308                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1309                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1310                 return ndlp->nlp_state;
1311         }
1312
1313         ndlp->nlp_rpi = mb->un.varWords[0];
1314         ndlp->nlp_flag |= NLP_RPI_VALID;
1315
1316         /* Only if we are not a fabric nport do we issue PRLI */
1317         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1318                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1319                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1320                 lpfc_issue_els_prli(vport, ndlp, 0);
1321         } else {
1322                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1323                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1324         }
1325         return ndlp->nlp_state;
1326 }
1327
1328 static uint32_t
1329 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1330                               struct lpfc_nodelist *ndlp,
1331                               void *arg,
1332                               uint32_t evt)
1333 {
1334         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1335
1336         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1337                 spin_lock_irq(shost->host_lock);
1338                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1339                 spin_unlock_irq(shost->host_lock);
1340                 return ndlp->nlp_state;
1341         } else {
1342                 lpfc_drop_node(vport, ndlp);
1343                 return NLP_STE_FREED_NODE;
1344         }
1345 }
1346
1347 static uint32_t
1348 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1349                                  struct lpfc_nodelist *ndlp,
1350                                  void *arg,
1351                                  uint32_t evt)
1352 {
1353         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1354
1355         /* Don't do anything that will mess up processing of the
1356          * previous RSCN.
1357          */
1358         if (vport->fc_flag & FC_RSCN_DEFERRED)
1359                 return ndlp->nlp_state;
1360
1361         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1362         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1363         spin_lock_irq(shost->host_lock);
1364         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1365         spin_unlock_irq(shost->host_lock);
1366         lpfc_disc_set_adisc(vport, ndlp);
1367         return ndlp->nlp_state;
1368 }
1369
1370 static uint32_t
1371 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1372                           void *arg, uint32_t evt)
1373 {
1374         struct lpfc_iocbq *cmdiocb;
1375
1376         cmdiocb = (struct lpfc_iocbq *) arg;
1377
1378         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1379         return ndlp->nlp_state;
1380 }
1381
1382 static uint32_t
1383 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1384                          void *arg, uint32_t evt)
1385 {
1386         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1387
1388         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1389         return ndlp->nlp_state;
1390 }
1391
1392 static uint32_t
1393 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1394                          void *arg, uint32_t evt)
1395 {
1396         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1397
1398         /* Software abort outstanding PRLI before sending acc */
1399         lpfc_els_abort(vport->phba, ndlp);
1400
1401         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1402         return ndlp->nlp_state;
1403 }
1404
1405 static uint32_t
1406 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1407                            void *arg, uint32_t evt)
1408 {
1409         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1410
1411         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1412         return ndlp->nlp_state;
1413 }
1414
1415 /* This routine is envoked when we rcv a PRLO request from a nport
1416  * we are logged into.  We should send back a PRLO rsp setting the
1417  * appropriate bits.
1418  * NEXT STATE = PRLI_ISSUE
1419  */
1420 static uint32_t
1421 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1422                          void *arg, uint32_t evt)
1423 {
1424         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1425
1426         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1427         return ndlp->nlp_state;
1428 }
1429
1430 static uint32_t
1431 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1432                           void *arg, uint32_t evt)
1433 {
1434         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1435         struct lpfc_iocbq *cmdiocb, *rspiocb;
1436         struct lpfc_hba   *phba = vport->phba;
1437         IOCB_t *irsp;
1438         PRLI *npr;
1439
1440         cmdiocb = (struct lpfc_iocbq *) arg;
1441         rspiocb = cmdiocb->context_un.rsp_iocb;
1442         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1443
1444         irsp = &rspiocb->iocb;
1445         if (irsp->ulpStatus) {
1446                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1447                     vport->cfg_restrict_login) {
1448                         goto out;
1449                 }
1450                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1451                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1452                 return ndlp->nlp_state;
1453         }
1454
1455         /* Check out PRLI rsp */
1456         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1457         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1458         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1459             (npr->prliType == PRLI_FCP_TYPE)) {
1460                 if (npr->initiatorFunc)
1461                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1462                 if (npr->targetFunc)
1463                         ndlp->nlp_type |= NLP_FCP_TARGET;
1464                 if (npr->Retry)
1465                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1466         }
1467         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1468             (vport->port_type == LPFC_NPIV_PORT) &&
1469              vport->cfg_restrict_login) {
1470 out:
1471                 spin_lock_irq(shost->host_lock);
1472                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1473                 spin_unlock_irq(shost->host_lock);
1474                 lpfc_issue_els_logo(vport, ndlp, 0);
1475
1476                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1477                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1478                 return ndlp->nlp_state;
1479         }
1480
1481         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1482         if (ndlp->nlp_type & NLP_FCP_TARGET)
1483                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1484         else
1485                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1486         return ndlp->nlp_state;
1487 }
1488
1489 /*! lpfc_device_rm_prli_issue
1490  *
1491  * \pre
1492  * \post
1493  * \param   phba
1494  * \param   ndlp
1495  * \param   arg
1496  * \param   evt
1497  * \return  uint32_t
1498  *
1499  * \b Description:
1500  *    This routine is envoked when we a request to remove a nport we are in the
1501  *    process of PRLIing. We should software abort outstanding prli, unreg
1502  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1503  *    on plogi list so it can be freed when LOGO completes.
1504  *
1505  */
1506
1507 static uint32_t
1508 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1509                           void *arg, uint32_t evt)
1510 {
1511         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1512
1513         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1514                 spin_lock_irq(shost->host_lock);
1515                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1516                 spin_unlock_irq(shost->host_lock);
1517                 return ndlp->nlp_state;
1518         } else {
1519                 /* software abort outstanding PLOGI */
1520                 lpfc_els_abort(vport->phba, ndlp);
1521
1522                 lpfc_drop_node(vport, ndlp);
1523                 return NLP_STE_FREED_NODE;
1524         }
1525 }
1526
1527
1528 /*! lpfc_device_recov_prli_issue
1529  *
1530  * \pre
1531  * \post
1532  * \param   phba
1533  * \param   ndlp
1534  * \param   arg
1535  * \param   evt
1536  * \return  uint32_t
1537  *
1538  * \b Description:
1539  *    The routine is envoked when the state of a device is unknown, like
1540  *    during a link down. We should remove the nodelist entry from the
1541  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1542  *    outstanding PRLI command, then free the node entry.
1543  */
1544 static uint32_t
1545 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1546                              struct lpfc_nodelist *ndlp,
1547                              void *arg,
1548                              uint32_t evt)
1549 {
1550         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1551         struct lpfc_hba  *phba = vport->phba;
1552
1553         /* Don't do anything that will mess up processing of the
1554          * previous RSCN.
1555          */
1556         if (vport->fc_flag & FC_RSCN_DEFERRED)
1557                 return ndlp->nlp_state;
1558
1559         /* software abort outstanding PRLI */
1560         lpfc_els_abort(phba, ndlp);
1561
1562         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1563         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1564         spin_lock_irq(shost->host_lock);
1565         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1566         spin_unlock_irq(shost->host_lock);
1567         lpfc_disc_set_adisc(vport, ndlp);
1568         return ndlp->nlp_state;
1569 }
1570
1571 static uint32_t
1572 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1573                           void *arg, uint32_t evt)
1574 {
1575         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1576
1577         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1578         return ndlp->nlp_state;
1579 }
1580
1581 static uint32_t
1582 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1583                          void *arg, uint32_t evt)
1584 {
1585         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1586
1587         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1588         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1589         return ndlp->nlp_state;
1590 }
1591
1592 static uint32_t
1593 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1594                          void *arg, uint32_t evt)
1595 {
1596         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1597
1598         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1599         return ndlp->nlp_state;
1600 }
1601
1602 static uint32_t
1603 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1604                            void *arg, uint32_t evt)
1605 {
1606         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1607
1608         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1609         return ndlp->nlp_state;
1610 }
1611
1612 static uint32_t
1613 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1614                          void *arg, uint32_t evt)
1615 {
1616         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1617
1618         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1619         return ndlp->nlp_state;
1620 }
1621
1622 static uint32_t
1623 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1624                              struct lpfc_nodelist *ndlp,
1625                              void *arg,
1626                              uint32_t evt)
1627 {
1628         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1629
1630         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1631         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1632         spin_lock_irq(shost->host_lock);
1633         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1634         spin_unlock_irq(shost->host_lock);
1635         lpfc_disc_set_adisc(vport, ndlp);
1636
1637         return ndlp->nlp_state;
1638 }
1639
1640 static uint32_t
1641 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1642                            void *arg, uint32_t evt)
1643 {
1644         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1645
1646         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1647         return ndlp->nlp_state;
1648 }
1649
1650 static uint32_t
1651 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1652                           void *arg, uint32_t evt)
1653 {
1654         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1655
1656         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1657         return ndlp->nlp_state;
1658 }
1659
1660 static uint32_t
1661 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1662                           void *arg, uint32_t evt)
1663 {
1664         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1665
1666         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1667         return ndlp->nlp_state;
1668 }
1669
1670 static uint32_t
1671 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1672                             struct lpfc_nodelist *ndlp,
1673                             void *arg, uint32_t evt)
1674 {
1675         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1676
1677         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1678         return ndlp->nlp_state;
1679 }
1680
1681 static uint32_t
1682 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1683                           void *arg, uint32_t evt)
1684 {
1685         struct lpfc_hba  *phba = vport->phba;
1686         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1687
1688         /* flush the target */
1689         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1690                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1691
1692         /* Treat like rcv logo */
1693         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1694         return ndlp->nlp_state;
1695 }
1696
1697 static uint32_t
1698 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1699                               struct lpfc_nodelist *ndlp,
1700                               void *arg,
1701                               uint32_t evt)
1702 {
1703         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1704
1705         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1706         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1707         spin_lock_irq(shost->host_lock);
1708         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1709         spin_unlock_irq(shost->host_lock);
1710         lpfc_disc_set_adisc(vport, ndlp);
1711         return ndlp->nlp_state;
1712 }
1713
1714 static uint32_t
1715 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1716                         void *arg, uint32_t evt)
1717 {
1718         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1719         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1720
1721         /* Ignore PLOGI if we have an outstanding LOGO */
1722         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1723                 return ndlp->nlp_state;
1724         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1725                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1726                 spin_lock_irq(shost->host_lock);
1727                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1728                 spin_unlock_irq(shost->host_lock);
1729         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1730                 /* send PLOGI immediately, move to PLOGI issue state */
1731                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1732                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1733                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1734                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1735                 }
1736         }
1737         return ndlp->nlp_state;
1738 }
1739
1740 static uint32_t
1741 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1742                        void *arg, uint32_t evt)
1743 {
1744         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1745         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1746         struct ls_rjt     stat;
1747
1748         memset(&stat, 0, sizeof (struct ls_rjt));
1749         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1750         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1751         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1752
1753         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1754                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1755                         spin_lock_irq(shost->host_lock);
1756                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1757                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1758                         spin_unlock_irq(shost->host_lock);
1759                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1760                         lpfc_issue_els_adisc(vport, ndlp, 0);
1761                 } else {
1762                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1763                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1764                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1765                 }
1766         }
1767         return ndlp->nlp_state;
1768 }
1769
1770 static uint32_t
1771 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1772                        void *arg, uint32_t evt)
1773 {
1774         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1775
1776         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1777         return ndlp->nlp_state;
1778 }
1779
1780 static uint32_t
1781 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1782                          void *arg, uint32_t evt)
1783 {
1784         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1785
1786         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1787         /*
1788          * Do not start discovery if discovery is about to start
1789          * or discovery in progress for this node. Starting discovery
1790          * here will affect the counting of discovery threads.
1791          */
1792         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1793             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1794                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1795                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1796                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1797                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1798                         lpfc_issue_els_adisc(vport, ndlp, 0);
1799                 } else {
1800                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1801                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1802                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1803                 }
1804         }
1805         return ndlp->nlp_state;
1806 }
1807
1808 static uint32_t
1809 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1810                        void *arg, uint32_t evt)
1811 {
1812         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1813         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1814
1815         spin_lock_irq(shost->host_lock);
1816         ndlp->nlp_flag |= NLP_LOGO_ACC;
1817         spin_unlock_irq(shost->host_lock);
1818
1819         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1820
1821         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1822                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1823                 spin_lock_irq(shost->host_lock);
1824                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1825                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1826                 spin_unlock_irq(shost->host_lock);
1827                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1828         } else {
1829                 spin_lock_irq(shost->host_lock);
1830                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1831                 spin_unlock_irq(shost->host_lock);
1832         }
1833         return ndlp->nlp_state;
1834 }
1835
1836 static uint32_t
1837 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1838                          void *arg, uint32_t evt)
1839 {
1840         struct lpfc_iocbq *cmdiocb, *rspiocb;
1841         IOCB_t *irsp;
1842
1843         cmdiocb = (struct lpfc_iocbq *) arg;
1844         rspiocb = cmdiocb->context_un.rsp_iocb;
1845
1846         irsp = &rspiocb->iocb;
1847         if (irsp->ulpStatus) {
1848                 ndlp->nlp_flag |= NLP_DEFER_RM;
1849                 return NLP_STE_FREED_NODE;
1850         }
1851         return ndlp->nlp_state;
1852 }
1853
1854 static uint32_t
1855 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1856                         void *arg, uint32_t evt)
1857 {
1858         struct lpfc_iocbq *cmdiocb, *rspiocb;
1859         IOCB_t *irsp;
1860
1861         cmdiocb = (struct lpfc_iocbq *) arg;
1862         rspiocb = cmdiocb->context_un.rsp_iocb;
1863
1864         irsp = &rspiocb->iocb;
1865         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1866                 lpfc_drop_node(vport, ndlp);
1867                 return NLP_STE_FREED_NODE;
1868         }
1869         return ndlp->nlp_state;
1870 }
1871
1872 static uint32_t
1873 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1874                         void *arg, uint32_t evt)
1875 {
1876         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1877         if (ndlp->nlp_DID == Fabric_DID) {
1878                 spin_lock_irq(shost->host_lock);
1879                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1880                 spin_unlock_irq(shost->host_lock);
1881         }
1882         lpfc_unreg_rpi(vport, ndlp);
1883         return ndlp->nlp_state;
1884 }
1885
1886 static uint32_t
1887 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1888                          void *arg, uint32_t evt)
1889 {
1890         struct lpfc_iocbq *cmdiocb, *rspiocb;
1891         IOCB_t *irsp;
1892
1893         cmdiocb = (struct lpfc_iocbq *) arg;
1894         rspiocb = cmdiocb->context_un.rsp_iocb;
1895
1896         irsp = &rspiocb->iocb;
1897         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1898                 lpfc_drop_node(vport, ndlp);
1899                 return NLP_STE_FREED_NODE;
1900         }
1901         return ndlp->nlp_state;
1902 }
1903
1904 static uint32_t
1905 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1906                             struct lpfc_nodelist *ndlp,
1907                             void *arg, uint32_t evt)
1908 {
1909         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1910         MAILBOX_t    *mb = &pmb->u.mb;
1911
1912         if (!mb->mbxStatus) {
1913                 ndlp->nlp_rpi = mb->un.varWords[0];
1914                 ndlp->nlp_flag |= NLP_RPI_VALID;
1915         } else {
1916                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1917                         lpfc_drop_node(vport, ndlp);
1918                         return NLP_STE_FREED_NODE;
1919                 }
1920         }
1921         return ndlp->nlp_state;
1922 }
1923
1924 static uint32_t
1925 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1926                         void *arg, uint32_t evt)
1927 {
1928         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1929
1930         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1931                 spin_lock_irq(shost->host_lock);
1932                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1933                 spin_unlock_irq(shost->host_lock);
1934                 return ndlp->nlp_state;
1935         }
1936         lpfc_drop_node(vport, ndlp);
1937         return NLP_STE_FREED_NODE;
1938 }
1939
1940 static uint32_t
1941 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1942                            void *arg, uint32_t evt)
1943 {
1944         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1945
1946         /* Don't do anything that will mess up processing of the
1947          * previous RSCN.
1948          */
1949         if (vport->fc_flag & FC_RSCN_DEFERRED)
1950                 return ndlp->nlp_state;
1951
1952         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1953         spin_lock_irq(shost->host_lock);
1954         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1955         spin_unlock_irq(shost->host_lock);
1956         return ndlp->nlp_state;
1957 }
1958
1959
1960 /* This next section defines the NPort Discovery State Machine */
1961
1962 /* There are 4 different double linked lists nodelist entries can reside on.
1963  * The plogi list and adisc list are used when Link Up discovery or RSCN
1964  * processing is needed. Each list holds the nodes that we will send PLOGI
1965  * or ADISC on. These lists will keep track of what nodes will be effected
1966  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1967  * The unmapped_list will contain all nodes that we have successfully logged
1968  * into at the Fibre Channel level. The mapped_list will contain all nodes
1969  * that are mapped FCP targets.
1970  */
1971 /*
1972  * The bind list is a list of undiscovered (potentially non-existent) nodes
1973  * that we have saved binding information on. This information is used when
1974  * nodes transition from the unmapped to the mapped list.
1975  */
1976 /* For UNUSED_NODE state, the node has just been allocated .
1977  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1978  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1979  * and put on the unmapped list. For ADISC processing, the node is taken off
1980  * the ADISC list and placed on either the mapped or unmapped list (depending
1981  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1982  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1983  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1984  * node, the node is taken off the unmapped list. The binding list is checked
1985  * for a valid binding, or a binding is automatically assigned. If binding
1986  * assignment is unsuccessful, the node is left on the unmapped list. If
1987  * binding assignment is successful, the associated binding list entry (if
1988  * any) is removed, and the node is placed on the mapped list.
1989  */
1990 /*
1991  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1992  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1993  * expire, all effected nodes will receive a DEVICE_RM event.
1994  */
1995 /*
1996  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1997  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1998  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1999  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2000  * we will first process the ADISC list.  32 entries are processed initially and
2001  * ADISC is initited for each one.  Completions / Events for each node are
2002  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2003  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2004  * waiting, and the ADISC list count is identically 0, then we are done. For
2005  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2006  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2007  * list.  32 entries are processed initially and PLOGI is initited for each one.
2008  * Completions / Events for each node are funnelled thru the state machine.  As
2009  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2010  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2011  * indentically 0, then we are done. We have now completed discovery / RSCN
2012  * handling. Upon completion, ALL nodes should be on either the mapped or
2013  * unmapped lists.
2014  */
2015
2016 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2017      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2018         /* Action routine                  Event       Current State  */
2019         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2020         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2021         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2022         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2023         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2024         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2025         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2026         lpfc_disc_illegal,              /* CMPL_PRLI       */
2027         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2028         lpfc_disc_illegal,              /* CMPL_ADISC      */
2029         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2030         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2031         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2032
2033         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2034         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2035         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2036         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2037         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2038         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2039         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2040         lpfc_disc_illegal,              /* CMPL_PRLI       */
2041         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2042         lpfc_disc_illegal,              /* CMPL_ADISC      */
2043         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2044         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2045         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2046
2047         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2048         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2049         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2050         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2051         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2052         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2053         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2054         lpfc_disc_illegal,              /* CMPL_PRLI       */
2055         lpfc_disc_illegal,              /* CMPL_LOGO       */
2056         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2057         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2058         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2059         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2060
2061         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2062         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2063         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2064         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2065         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2066         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2067         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2068         lpfc_disc_illegal,              /* CMPL_PRLI       */
2069         lpfc_disc_illegal,              /* CMPL_LOGO       */
2070         lpfc_disc_illegal,              /* CMPL_ADISC      */
2071         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2072         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2073         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2074
2075         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2076         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2077         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2078         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2079         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2080         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2081         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2082         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2083         lpfc_disc_illegal,              /* CMPL_LOGO       */
2084         lpfc_disc_illegal,              /* CMPL_ADISC      */
2085         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2086         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2087         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2088
2089         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2090         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2091         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2092         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2093         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2094         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2095         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2096         lpfc_disc_illegal,              /* CMPL_PRLI       */
2097         lpfc_disc_illegal,              /* CMPL_LOGO       */
2098         lpfc_disc_illegal,              /* CMPL_ADISC      */
2099         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2100         lpfc_disc_illegal,              /* DEVICE_RM       */
2101         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2102
2103         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2104         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2105         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2106         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2107         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2108         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2109         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2110         lpfc_disc_illegal,              /* CMPL_PRLI       */
2111         lpfc_disc_illegal,              /* CMPL_LOGO       */
2112         lpfc_disc_illegal,              /* CMPL_ADISC      */
2113         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2114         lpfc_disc_illegal,              /* DEVICE_RM       */
2115         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2116
2117         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2118         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2119         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2120         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2121         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2122         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2123         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2124         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2125         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2126         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2127         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2128         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2129         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2130 };
2131
2132 int
2133 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2134                         void *arg, uint32_t evt)
2135 {
2136         uint32_t cur_state, rc;
2137         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2138                          uint32_t);
2139         uint32_t got_ndlp = 0;
2140
2141         if (lpfc_nlp_get(ndlp))
2142                 got_ndlp = 1;
2143
2144         cur_state = ndlp->nlp_state;
2145
2146         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2147         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2148                          "0211 DSM in event x%x on NPort x%x in "
2149                          "state %d Data: x%x\n",
2150                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2151
2152         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2153                  "DSM in:          evt:%d ste:%d did:x%x",
2154                 evt, cur_state, ndlp->nlp_DID);
2155
2156         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2157         rc = (func) (vport, ndlp, arg, evt);
2158
2159         /* DSM out state <rc> on NPort <nlp_DID> */
2160         if (got_ndlp) {
2161                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2162                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2163                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2164
2165                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2166                         "DSM out:         ste:%d did:x%x flg:x%x",
2167                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2168                 /* Decrement the ndlp reference count held for this function */
2169                 lpfc_nlp_put(ndlp);
2170         } else {
2171                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2172                         "0213 DSM out state %d on NPort free\n", rc);
2173
2174                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2175                         "DSM out:         ste:%d did:x%x flg:x%x",
2176                         rc, 0, 0);
2177         }
2178
2179         return rc;
2180 }