git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/lpfc/lpfc_nportdisc.c

   1  /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <scsi/scsi.h>
  27 #include <scsi/scsi_device.h>
  28 #include <scsi/scsi_host.h>
  29 #include <scsi/scsi_transport_fc.h>
  30
  31 #include "lpfc_hw.h"
  32 #include "lpfc_sli.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_scsi.h"
  35 #include "lpfc.h"
  36 #include "lpfc_logmsg.h"
  37 #include "lpfc_crtn.h"
  38 #include "lpfc_vport.h"
  39 #include "lpfc_debugfs.h"
  40
  41
  42 /* Called to verify a rcv'ed ADISC was intended for us. */
  43 static int
  44 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  45                  struct lpfc_name *nn, struct lpfc_name *pn)
  46 {
  47         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  48          * table entry for that node.
  49          */
  50         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  51                 return 0;
  52
  53         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  54                 return 0;
  55
  56         /* we match, return success */
  57         return 1;
  58 }
  59
  60 int
  61 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  62                  struct serv_parm * sp, uint32_t class)
  63 {
  64         volatile struct serv_parm *hsp = &vport->fc_sparam;
  65         uint16_t hsp_value, ssp_value = 0;
  66
  67         /*
  68          * The receive data field size and buffer-to-buffer receive data field
  69          * size entries are 16 bits but are represented as two 8-bit fields in
  70          * the driver data structure to account for rsvd bits and other control
  71          * bits.  Reconstruct and compare the fields as a 16-bit values before
  72          * correcting the byte values.
  73          */
  74         if (sp->cls1.classValid) {
  75                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  76                                 hsp->cls1.rcvDataSizeLsb;
  77                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  78                                 sp->cls1.rcvDataSizeLsb;
  79                 if (!ssp_value)
  80                         goto bad_service_param;
  81                 if (ssp_value > hsp_value) {
  82                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  83                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  84                 }
  85         } else if (class == CLASS1) {
  86                 goto bad_service_param;
  87         }
  88
  89         if (sp->cls2.classValid) {
  90                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  91                                 hsp->cls2.rcvDataSizeLsb;
  92                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  93                                 sp->cls2.rcvDataSizeLsb;
  94                 if (!ssp_value)
  95                         goto bad_service_param;
  96                 if (ssp_value > hsp_value) {
  97                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  98                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  99                 }
 100         } else if (class == CLASS2) {
 101                 goto bad_service_param;
 102         }
 103
 104         if (sp->cls3.classValid) {
 105                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 106                                 hsp->cls3.rcvDataSizeLsb;
 107                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 108                                 sp->cls3.rcvDataSizeLsb;
 109                 if (!ssp_value)
 110                         goto bad_service_param;
 111                 if (ssp_value > hsp_value) {
 112                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 113                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 114                 }
 115         } else if (class == CLASS3) {
 116                 goto bad_service_param;
 117         }
 118
 119         /*
 120          * Preserve the upper four bits of the MSB from the PLOGI response.
 121          * These bits contain the Buffer-to-Buffer State Change Number
 122          * from the target and need to be passed to the FW.
 123          */
 124         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 125         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 126         if (ssp_value > hsp_value) {
 127                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 128                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 129                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 130         }
 131
 132         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 133         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 134         return 1;
 135 bad_service_param:
 136         lpfc_printf_log(vport->phba, KERN_ERR, LOG_DISCOVERY,
 137                         "%d (%d):0207 Device %x "
 138                         "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 139                         "invalid service parameters.  Ignoring device.\n",
 140                         vport->phba->brd_no, ndlp->vport->vpi, ndlp->nlp_DID,
 141                         sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 142                         sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 143                         sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 144                         sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 145         return 0;
 146 }
 147
 148 static void *
 149 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 150                         struct lpfc_iocbq *rspiocb)
 151 {
 152         struct lpfc_dmabuf *pcmd, *prsp;
 153         uint32_t *lp;
 154         void     *ptr = NULL;
 155         IOCB_t   *irsp;
 156
 157         irsp = &rspiocb->iocb;
 158         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 159
 160         /* For lpfc_els_abort, context2 could be zero'ed to delay
 161          * freeing associated memory till after ABTS completes.
 162          */
 163         if (pcmd) {
 164                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 165                                        list);
 166                 if (prsp) {
 167                         lp = (uint32_t *) prsp->virt;
 168                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 169                 }
 170         } else {
 171                 /* Force ulpStatus error since we are returning NULL ptr */
 172                 if (!(irsp->ulpStatus)) {
 173                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 174                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 175                 }
 176                 ptr = NULL;
 177         }
 178         return ptr;
 179 }
 180
 181
 182 /*
 183  * Free resources / clean up outstanding I/Os
 184  * associated with a LPFC_NODELIST entry. This
 185  * routine effectively results in a "software abort".
 186  */
 187 int
 188 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 189 {
 190         LIST_HEAD(completions);
 191         struct lpfc_sli  *psli = &phba->sli;
 192         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 193         struct lpfc_iocbq *iocb, *next_iocb;
 194         IOCB_t *cmd;
 195
 196         /* Abort outstanding I/O on NPort <nlp_DID> */
 197         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 198                         "%d (%d):0205 Abort outstanding I/O on NPort x%x "
 199                         "Data: x%x x%x x%x\n",
 200                         phba->brd_no, ndlp->vport->vpi, ndlp->nlp_DID,
 201                         ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
 202
 203         lpfc_fabric_abort_nport(ndlp);
 204
 205         /* First check the txq */
 206         spin_lock_irq(&phba->hbalock);
 207         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 208                 /* Check to see if iocb matches the nport we are looking for */
 209                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 210                         /* It matches, so deque and call compl with anp error */
 211                         list_move_tail(&iocb->list, &completions);
 212                         pring->txq_cnt--;
 213                 }
 214         }
 215
 216         /* Next check the txcmplq */
 217         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 218                 /* Check to see if iocb matches the nport we are looking for */
 219                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 220                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 221                 }
 222         }
 223         spin_unlock_irq(&phba->hbalock);
 224
 225         while (!list_empty(&completions)) {
 226                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
 227                 cmd = &iocb->iocb;
 228                 list_del_init(&iocb->list);
 229
 230                 if (!iocb->iocb_cmpl)
 231                         lpfc_sli_release_iocbq(phba, iocb);
 232                 else {
 233                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 234                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 235                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 236                 }
 237         }
 238
 239         /* If we are delaying issuing an ELS command, cancel it */
 240         if (ndlp->nlp_flag & NLP_DELAY_TMO)
 241                 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 242         return 0;
 243 }
 244
 245 static int
 246 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 247                struct lpfc_iocbq *cmdiocb)
 248 {
 249         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 250         struct lpfc_hba    *phba = vport->phba;
 251         struct lpfc_dmabuf *pcmd;
 252         uint32_t *lp;
 253         IOCB_t *icmd;
 254         struct serv_parm *sp;
 255         LPFC_MBOXQ_t *mbox;
 256         struct ls_rjt stat;
 257         int rc;
 258
 259         memset(&stat, 0, sizeof (struct ls_rjt));
 260         if (vport->port_state <= LPFC_FLOGI) {
 261                 /* Before responding to PLOGI, check for pt2pt mode.
 262                  * If we are pt2pt, with an outstanding FLOGI, abort
 263                  * the FLOGI and resend it first.
 264                  */
 265                 if (vport->fc_flag & FC_PT2PT) {
 266                          lpfc_els_abort_flogi(phba);
 267                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 268                                 /* If the other side is supposed to initiate
 269                                  * the PLOGI anyway, just ACC it now and
 270                                  * move on with discovery.
 271                                  */
 272                                 phba->fc_edtov = FF_DEF_EDTOV;
 273                                 phba->fc_ratov = FF_DEF_RATOV;
 274                                 /* Start discovery - this should just do
 275                                    CLEAR_LA */
 276                                 lpfc_disc_start(vport);
 277                         } else
 278                                 lpfc_initial_flogi(vport);
 279                 } else {
 280                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 281                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 282                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 283                                             ndlp, NULL);
 284                         return 0;
 285                 }
 286         }
 287         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 288         lp = (uint32_t *) pcmd->virt;
 289         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 290         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
 291                 /* Reject this request because invalid parameters */
 292                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 293                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 294                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 295                         NULL);
 296                 return 0;
 297         }
 298         icmd = &cmdiocb->iocb;
 299
 300         /* PLOGI chkparm OK */
 301         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 302                         "%d (%d):0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 303                         phba->brd_no, vport->vpi,
 304                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 305                         ndlp->nlp_rpi);
 306
 307         if (phba->cfg_fcp_class == 2 && sp->cls2.classValid)
 308                 ndlp->nlp_fcp_info |= CLASS2;
 309         else
 310                 ndlp->nlp_fcp_info |= CLASS3;
 311
 312         ndlp->nlp_class_sup = 0;
 313         if (sp->cls1.classValid)
 314                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 315         if (sp->cls2.classValid)
 316                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 317         if (sp->cls3.classValid)
 318                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 319         if (sp->cls4.classValid)
 320                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 321         ndlp->nlp_maxframe =
 322                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 323
 324         /* no need to reg_login if we are already in one of these states */
 325         switch (ndlp->nlp_state) {
 326         case  NLP_STE_NPR_NODE:
 327                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 328                         break;
 329         case  NLP_STE_REG_LOGIN_ISSUE:
 330         case  NLP_STE_PRLI_ISSUE:
 331         case  NLP_STE_UNMAPPED_NODE:
 332         case  NLP_STE_MAPPED_NODE:
 333                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 334                 return 1;
 335         }
 336
 337         if ((vport->fc_flag & FC_PT2PT) &&
 338             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 339                 /* rcv'ed PLOGI decides what our NPortId will be */
 340                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 341                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 342                 if (mbox == NULL)
 343                         goto out;
 344                 lpfc_config_link(phba, mbox);
 345                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 346                 mbox->vport = vport;
 347                 rc = lpfc_sli_issue_mbox
 348                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 349                 if (rc == MBX_NOT_FINISHED) {
 350                         mempool_free(mbox, phba->mbox_mem_pool);
 351                         goto out;
 352                 }
 353
 354                 lpfc_can_disctmo(vport);
 355         }
 356         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 357         if (!mbox)
 358                 goto out;
 359
 360         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 361                             (uint8_t *) sp, mbox, 0);
 362         if (rc) {
 363                 mempool_free(mbox, phba->mbox_mem_pool);
 364                 goto out;
 365         }
 366
 367         /* ACC PLOGI rsp command needs to execute first,
 368          * queue this mbox command to be processed later.
 369          */
 370         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 371         /*
 372          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 373          * command issued in lpfc_cmpl_els_acc().
 374          */
 375         mbox->vport = vport;
 376         spin_lock_irq(shost->host_lock);
 377         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 378         spin_unlock_irq(shost->host_lock);
 379
 380         /*
 381          * If there is an outstanding PLOGI issued, abort it before
 382          * sending ACC rsp for received PLOGI. If pending plogi
 383          * is not canceled here, the plogi will be rejected by
 384          * remote port and will be retried. On a configuration with
 385          * single discovery thread, this will cause a huge delay in
 386          * discovery. Also this will cause multiple state machines
 387          * running in parallel for this node.
 388          */
 389         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 390                 /* software abort outstanding PLOGI */
 391                 lpfc_els_abort(phba, ndlp);
 392         }
 393
 394         if ((vport->port_type == LPFC_NPIV_PORT &&
 395               phba->cfg_vport_restrict_login)) {
 396
 397                 /* In order to preserve RPIs, we want to cleanup
 398                  * the default RPI the firmware created to rcv
 399                  * this ELS request. The only way to do this is
 400                  * to register, then unregister the RPI.
 401                  */
 402                 spin_lock_irq(shost->host_lock);
 403                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 404                 spin_unlock_irq(shost->host_lock);
 405                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 406                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 407                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 408                         ndlp, mbox);
 409                 return 1;
 410         }
 411         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 412         return 1;
 413
 414 out:
 415         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 416         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 417         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 418         return 0;
 419 }
 420
 421 static int
 422 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 423                 struct lpfc_iocbq *cmdiocb)
 424 {
 425         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 426         struct lpfc_dmabuf *pcmd;
 427         struct serv_parm   *sp;
 428         struct lpfc_name   *pnn, *ppn;
 429         struct ls_rjt stat;
 430         ADISC *ap;
 431         IOCB_t *icmd;
 432         uint32_t *lp;
 433         uint32_t cmd;
 434
 435         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 436         lp = (uint32_t *) pcmd->virt;
 437
 438         cmd = *lp++;
 439         if (cmd == ELS_CMD_ADISC) {
 440                 ap = (ADISC *) lp;
 441                 pnn = (struct lpfc_name *) & ap->nodeName;
 442                 ppn = (struct lpfc_name *) & ap->portName;
 443         } else {
 444                 sp = (struct serv_parm *) lp;
 445                 pnn = (struct lpfc_name *) & sp->nodeName;
 446                 ppn = (struct lpfc_name *) & sp->portName;
 447         }
 448
 449         icmd = &cmdiocb->iocb;
 450         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 451                 if (cmd == ELS_CMD_ADISC) {
 452                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 453                 } else {
 454                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 455                                          NULL, 0);
 456                 }
 457                 return 1;
 458         }
 459         /* Reject this request because invalid parameters */
 460         stat.un.b.lsRjtRsvd0 = 0;
 461         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 462         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 463         stat.un.b.vendorUnique = 0;
 464         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 465
 466         /* 1 sec timeout */
 467         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 468
 469         spin_lock_irq(shost->host_lock);
 470         ndlp->nlp_flag |= NLP_DELAY_TMO;
 471         spin_unlock_irq(shost->host_lock);
 472         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 473         ndlp->nlp_prev_state = ndlp->nlp_state;
 474         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 475         return 0;
 476 }
 477
 478 static int
 479 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 480               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 481 {
 482         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 483
 484         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 485         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 486          * PLOGIs during LOGO storms from a device.
 487          */
 488         spin_lock_irq(shost->host_lock);
 489         ndlp->nlp_flag |= NLP_LOGO_ACC;
 490         spin_unlock_irq(shost->host_lock);
 491         if (els_cmd == ELS_CMD_PRLO)
 492                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
 493         else
 494                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 495
 496         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 497             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 498                 /* Only try to re-login if this is NOT a Fabric Node */
 499                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 500                 spin_lock_irq(shost->host_lock);
 501                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 502                 spin_unlock_irq(shost->host_lock);
 503
 504                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 505                 ndlp->nlp_prev_state = ndlp->nlp_state;
 506                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 507         } else {
 508                 ndlp->nlp_prev_state = ndlp->nlp_state;
 509                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 510         }
 511
 512         spin_lock_irq(shost->host_lock);
 513         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 514         spin_unlock_irq(shost->host_lock);
 515         /* The driver has to wait until the ACC completes before it continues
 516          * processing the LOGO.  The action will resume in
 517          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 518          * unreg_login, the driver waits so the ACC does not get aborted.
 519          */
 520         return 0;
 521 }
 522
 523 static void
 524 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 525               struct lpfc_iocbq *cmdiocb)
 526 {
 527         struct lpfc_dmabuf *pcmd;
 528         uint32_t *lp;
 529         PRLI *npr;
 530         struct fc_rport *rport = ndlp->rport;
 531         u32 roles;
 532
 533         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 534         lp = (uint32_t *) pcmd->virt;
 535         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 536
 537         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 538         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 539         if (npr->prliType == PRLI_FCP_TYPE) {
 540                 if (npr->initiatorFunc)
 541                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 542                 if (npr->targetFunc)
 543                         ndlp->nlp_type |= NLP_FCP_TARGET;
 544                 if (npr->Retry)
 545                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 546         }
 547         if (rport) {
 548                 /* We need to update the rport role values */
 549                 roles = FC_RPORT_ROLE_UNKNOWN;
 550                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 551                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 552                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 553                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 554
 555                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 556                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 557                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 558
 559                 fc_remote_port_rolechg(rport, roles);
 560         }
 561 }
 562
 563 static uint32_t
 564 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 565 {
 566         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 567         struct lpfc_hba  *phba = vport->phba;
 568
 569         /* Check config parameter use-adisc or FCP-2 */
 570         if ((phba->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 571             ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 572                 spin_lock_irq(shost->host_lock);
 573                 ndlp->nlp_flag |= NLP_NPR_ADISC;
 574                 spin_unlock_irq(shost->host_lock);
 575                 return 1;
 576         }
 577         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 578         lpfc_unreg_rpi(vport, ndlp);
 579         return 0;
 580 }
 581
 582 static uint32_t
 583 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 584                   void *arg, uint32_t evt)
 585 {
 586         lpfc_printf_log(vport->phba, KERN_ERR, LOG_DISCOVERY,
 587                         "%d (%d):0253 Illegal State Transition: node x%x "
 588                         "event x%x, state x%x Data: x%x x%x\n",
 589                         vport->phba->brd_no, vport->vpi,
 590                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 591                         ndlp->nlp_flag);
 592         return ndlp->nlp_state;
 593 }
 594
 595 /* Start of Discovery State Machine routines */
 596
 597 static uint32_t
 598 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 599                            void *arg, uint32_t evt)
 600 {
 601         struct lpfc_iocbq *cmdiocb;
 602
 603         cmdiocb = (struct lpfc_iocbq *) arg;
 604
 605         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 606                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 607                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 608                 return ndlp->nlp_state;
 609         }
 610         lpfc_drop_node(vport, ndlp);
 611         return NLP_STE_FREED_NODE;
 612 }
 613
 614 static uint32_t
 615 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 616                          void *arg, uint32_t evt)
 617 {
 618         lpfc_issue_els_logo(vport, ndlp, 0);
 619         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 620         return ndlp->nlp_state;
 621 }
 622
 623 static uint32_t
 624 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 625                           void *arg, uint32_t evt)
 626 {
 627         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 628         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 629
 630         spin_lock_irq(shost->host_lock);
 631         ndlp->nlp_flag |= NLP_LOGO_ACC;
 632         spin_unlock_irq(shost->host_lock);
 633         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 634         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 635
 636         return ndlp->nlp_state;
 637 }
 638
 639 static uint32_t
 640 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 641                            void *arg, uint32_t evt)
 642 {
 643         lpfc_drop_node(vport, ndlp);
 644         return NLP_STE_FREED_NODE;
 645 }
 646
 647 static uint32_t
 648 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 649                            void *arg, uint32_t evt)
 650 {
 651         lpfc_drop_node(vport, ndlp);
 652         return NLP_STE_FREED_NODE;
 653 }
 654
 655 static uint32_t
 656 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 657                            void *arg, uint32_t evt)
 658 {
 659         struct lpfc_hba   *phba = vport->phba;
 660         struct lpfc_iocbq *cmdiocb = arg;
 661         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 662         uint32_t *lp = (uint32_t *) pcmd->virt;
 663         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 664         struct ls_rjt stat;
 665         int port_cmp;
 666
 667         memset(&stat, 0, sizeof (struct ls_rjt));
 668
 669         /* For a PLOGI, we only accept if our portname is less
 670          * than the remote portname.
 671          */
 672         phba->fc_stat.elsLogiCol++;
 673         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 674                           sizeof(struct lpfc_name));
 675
 676         if (port_cmp >= 0) {
 677                 /* Reject this request because the remote node will accept
 678                    ours */
 679                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 680                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 681                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 682                         NULL);
 683         } else {
 684                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
 685         } /* If our portname was less */
 686
 687         return ndlp->nlp_state;
 688 }
 689
 690 static uint32_t
 691 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 692                           void *arg, uint32_t evt)
 693 {
 694         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 695         struct ls_rjt     stat;
 696
 697         memset(&stat, 0, sizeof (struct ls_rjt));
 698         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 699         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 700         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 701         return ndlp->nlp_state;
 702 }
 703
 704 static uint32_t
 705 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 706                           void *arg, uint32_t evt)
 707 {
 708         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 709
 710                                 /* software abort outstanding PLOGI */
 711         lpfc_els_abort(vport->phba, ndlp);
 712
 713         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 714         return ndlp->nlp_state;
 715 }
 716
 717 static uint32_t
 718 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 719                          void *arg, uint32_t evt)
 720 {
 721         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 722         struct lpfc_hba   *phba = vport->phba;
 723         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 724
 725         /* software abort outstanding PLOGI */
 726         lpfc_els_abort(phba, ndlp);
 727
 728         if (evt == NLP_EVT_RCV_LOGO) {
 729                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 730         } else {
 731                 lpfc_issue_els_logo(vport, ndlp, 0);
 732         }
 733
 734         /* Put ndlp in npr state set plogi timer for 1 sec */
 735         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 736         spin_lock_irq(shost->host_lock);
 737         ndlp->nlp_flag |= NLP_DELAY_TMO;
 738         spin_unlock_irq(shost->host_lock);
 739         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 740         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 741         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 742
 743         return ndlp->nlp_state;
 744 }
 745
 746 static uint32_t
 747 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 748                             struct lpfc_nodelist *ndlp,
 749                             void *arg,
 750                             uint32_t evt)
 751 {
 752         struct lpfc_hba    *phba = vport->phba;
 753         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 754         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 755         uint32_t *lp;
 756         IOCB_t *irsp;
 757         struct serv_parm *sp;
 758         LPFC_MBOXQ_t *mbox;
 759
 760         cmdiocb = (struct lpfc_iocbq *) arg;
 761         rspiocb = cmdiocb->context_un.rsp_iocb;
 762
 763         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 764                 /* Recovery from PLOGI collision logic */
 765                 return ndlp->nlp_state;
 766         }
 767
 768         irsp = &rspiocb->iocb;
 769
 770         if (irsp->ulpStatus)
 771                 goto out;
 772
 773         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 774
 775         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 776
 777         lp = (uint32_t *) prsp->virt;
 778         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 779         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 780                 goto out;
 781
 782         /* PLOGI chkparm OK */
 783         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 784                         "%d (%d):0121 PLOGI chkparm OK "
 785                         "Data: x%x x%x x%x x%x\n",
 786                         phba->brd_no, vport->vpi,
 787                         ndlp->nlp_DID, ndlp->nlp_state,
 788                         ndlp->nlp_flag, ndlp->nlp_rpi);
 789
 790         if (phba->cfg_fcp_class == 2 && (sp->cls2.classValid))
 791                 ndlp->nlp_fcp_info |= CLASS2;
 792         else
 793                 ndlp->nlp_fcp_info |= CLASS3;
 794
 795         ndlp->nlp_class_sup = 0;
 796         if (sp->cls1.classValid)
 797                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 798         if (sp->cls2.classValid)
 799                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 800         if (sp->cls3.classValid)
 801                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 802         if (sp->cls4.classValid)
 803                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 804         ndlp->nlp_maxframe =
 805                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 806
 807         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 808         if (!mbox) {
 809                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 810                         "%d (%d):0133 PLOGI: no memory for reg_login "
 811                         "Data: x%x x%x x%x x%x\n",
 812                         phba->brd_no, vport->vpi,
 813                         ndlp->nlp_DID, ndlp->nlp_state,
 814                         ndlp->nlp_flag, ndlp->nlp_rpi);
 815                 goto out;
 816         }
 817
 818         lpfc_unreg_rpi(vport, ndlp);
 819
 820         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 821                            (uint8_t *) sp, mbox, 0) == 0) {
 822                 switch (ndlp->nlp_DID) {
 823                 case NameServer_DID:
 824                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 825                         break;
 826                 case FDMI_DID:
 827                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 828                         break;
 829                 default:
 830                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 831                 }
 832                 mbox->context2 = lpfc_nlp_get(ndlp);
 833                 mbox->vport = vport;
 834                 if (lpfc_sli_issue_mbox(phba, mbox,
 835                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 836                     != MBX_NOT_FINISHED) {
 837                         lpfc_nlp_set_state(vport, ndlp,
 838                                            NLP_STE_REG_LOGIN_ISSUE);
 839                         return ndlp->nlp_state;
 840                 }
 841                 lpfc_nlp_put(ndlp);
 842                 mp = (struct lpfc_dmabuf *) mbox->context1;
 843                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 844                 kfree(mp);
 845                 mempool_free(mbox, phba->mbox_mem_pool);
 846
 847                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 848                         "%d (%d):0134 PLOGI: cannot issue reg_login "
 849                         "Data: x%x x%x x%x x%x\n",
 850                         phba->brd_no, vport->vpi,
 851                         ndlp->nlp_DID, ndlp->nlp_state,
 852                         ndlp->nlp_flag, ndlp->nlp_rpi);
 853         } else {
 854                 mempool_free(mbox, phba->mbox_mem_pool);
 855
 856                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 857                         "%d (%d):0135 PLOGI: cannot format reg_login "
 858                         "Data: x%x x%x x%x x%x\n",
 859                         phba->brd_no, vport->vpi,
 860                         ndlp->nlp_DID, ndlp->nlp_state,
 861                         ndlp->nlp_flag, ndlp->nlp_rpi);
 862         }
 863
 864
 865 out:
 866         if (ndlp->nlp_DID == NameServer_DID) {
 867                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 868                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 869                         "%d (%d):0261 Cannot Register NameServer login\n",
 870                         phba->brd_no, vport->vpi);
 871         }
 872
 873         /* Free this node since the driver cannot login or has the wrong
 874            sparm */
 875         lpfc_drop_node(vport, ndlp);
 876         return NLP_STE_FREED_NODE;
 877 }
 878
 879 static uint32_t
 880 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 881                            void *arg, uint32_t evt)
 882 {
 883         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 884
 885         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 886                 spin_lock_irq(shost->host_lock);
 887                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 888                 spin_unlock_irq(shost->host_lock);
 889                 return ndlp->nlp_state;
 890         } else {
 891                 /* software abort outstanding PLOGI */
 892                 lpfc_els_abort(vport->phba, ndlp);
 893
 894                 lpfc_drop_node(vport, ndlp);
 895                 return NLP_STE_FREED_NODE;
 896         }
 897 }
 898
 899 static uint32_t
 900 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 901                               struct lpfc_nodelist *ndlp,
 902                               void *arg,
 903                               uint32_t evt)
 904 {
 905         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 906         struct lpfc_hba  *phba = vport->phba;
 907
 908         /* Don't do anything that will mess up processing of the
 909          * previous RSCN.
 910          */
 911         if (vport->fc_flag & FC_RSCN_DEFERRED)
 912                 return ndlp->nlp_state;
 913
 914         /* software abort outstanding PLOGI */
 915         lpfc_els_abort(phba, ndlp);
 916
 917         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 918         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 919         spin_lock_irq(shost->host_lock);
 920         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 921         spin_unlock_irq(shost->host_lock);
 922
 923         return ndlp->nlp_state;
 924 }
 925
 926 static uint32_t
 927 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 928                            void *arg, uint32_t evt)
 929 {
 930         struct lpfc_hba   *phba = vport->phba;
 931         struct lpfc_iocbq *cmdiocb;
 932
 933         /* software abort outstanding ADISC */
 934         lpfc_els_abort(phba, ndlp);
 935
 936         cmdiocb = (struct lpfc_iocbq *) arg;
 937
 938         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
 939                 return ndlp->nlp_state;
 940
 941         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 942         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
 943         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
 944
 945         return ndlp->nlp_state;
 946 }
 947
 948 static uint32_t
 949 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 950                           void *arg, uint32_t evt)
 951 {
 952         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 953
 954         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
 955         return ndlp->nlp_state;
 956 }
 957
 958 static uint32_t
 959 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 960                           void *arg, uint32_t evt)
 961 {
 962         struct lpfc_hba *phba = vport->phba;
 963         struct lpfc_iocbq *cmdiocb;
 964
 965         cmdiocb = (struct lpfc_iocbq *) arg;
 966
 967         /* software abort outstanding ADISC */
 968         lpfc_els_abort(phba, ndlp);
 969
 970         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 971         return ndlp->nlp_state;
 972 }
 973
 974 static uint32_t
 975 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
 976                             struct lpfc_nodelist *ndlp,
 977                             void *arg, uint32_t evt)
 978 {
 979         struct lpfc_iocbq *cmdiocb;
 980
 981         cmdiocb = (struct lpfc_iocbq *) arg;
 982
 983         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
 984         return ndlp->nlp_state;
 985 }
 986
 987 static uint32_t
 988 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 989                           void *arg, uint32_t evt)
 990 {
 991         struct lpfc_iocbq *cmdiocb;
 992
 993         cmdiocb = (struct lpfc_iocbq *) arg;
 994
 995         /* Treat like rcv logo */
 996         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
 997         return ndlp->nlp_state;
 998 }
 999
1000 static uint32_t
1001 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1002                             struct lpfc_nodelist *ndlp,
1003                             void *arg, uint32_t evt)
1004 {
1005         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1006         struct lpfc_hba   *phba = vport->phba;
1007         struct lpfc_iocbq *cmdiocb, *rspiocb;
1008         IOCB_t *irsp;
1009         ADISC *ap;
1010
1011         cmdiocb = (struct lpfc_iocbq *) arg;
1012         rspiocb = cmdiocb->context_un.rsp_iocb;
1013
1014         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1015         irsp = &rspiocb->iocb;
1016
1017         if ((irsp->ulpStatus) ||
1018             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1019                 /* 1 sec timeout */
1020                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1021                 spin_lock_irq(shost->host_lock);
1022                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1023                 spin_unlock_irq(shost->host_lock);
1024                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1025
1026                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1027                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1028
1029                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1030                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1031                 lpfc_unreg_rpi(vport, ndlp);
1032                 return ndlp->nlp_state;
1033         }
1034
1035         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1036                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1037                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1038         } else {
1039                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1040                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1041         }
1042         return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1047                            void *arg, uint32_t evt)
1048 {
1049         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1050
1051         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1052                 spin_lock_irq(shost->host_lock);
1053                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1054                 spin_unlock_irq(shost->host_lock);
1055                 return ndlp->nlp_state;
1056         } else {
1057                 /* software abort outstanding ADISC */
1058                 lpfc_els_abort(vport->phba, ndlp);
1059
1060                 lpfc_drop_node(vport, ndlp);
1061                 return NLP_STE_FREED_NODE;
1062         }
1063 }
1064
1065 static uint32_t
1066 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1067                               struct lpfc_nodelist *ndlp,
1068                               void *arg,
1069                               uint32_t evt)
1070 {
1071         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1072         struct lpfc_hba  *phba = vport->phba;
1073
1074         /* Don't do anything that will mess up processing of the
1075          * previous RSCN.
1076          */
1077         if (vport->fc_flag & FC_RSCN_DEFERRED)
1078                 return ndlp->nlp_state;
1079
1080         /* software abort outstanding ADISC */
1081         lpfc_els_abort(phba, ndlp);
1082
1083         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1084         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1085         spin_lock_irq(shost->host_lock);
1086         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1087         spin_unlock_irq(shost->host_lock);
1088         lpfc_disc_set_adisc(vport, ndlp);
1089         return ndlp->nlp_state;
1090 }
1091
1092 static uint32_t
1093 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1094                               struct lpfc_nodelist *ndlp,
1095                               void *arg,
1096                               uint32_t evt)
1097 {
1098         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1099
1100         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1101         return ndlp->nlp_state;
1102 }
1103
1104 static uint32_t
1105 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1106                              struct lpfc_nodelist *ndlp,
1107                              void *arg,
1108                              uint32_t evt)
1109 {
1110         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1111
1112         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1113         return ndlp->nlp_state;
1114 }
1115
1116 static uint32_t
1117 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1118                              struct lpfc_nodelist *ndlp,
1119                              void *arg,
1120                              uint32_t evt)
1121 {
1122         struct lpfc_hba   *phba = vport->phba;
1123         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1124         LPFC_MBOXQ_t      *mb;
1125         LPFC_MBOXQ_t      *nextmb;
1126         struct lpfc_dmabuf *mp;
1127
1128         cmdiocb = (struct lpfc_iocbq *) arg;
1129
1130         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1131         if ((mb = phba->sli.mbox_active)) {
1132                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1133                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1134                         lpfc_nlp_put(ndlp);
1135                         mb->context2 = NULL;
1136                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1137                 }
1138         }
1139
1140         spin_lock_irq(&phba->hbalock);
1141         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1142                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1143                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1144                         mp = (struct lpfc_dmabuf *) (mb->context1);
1145                         if (mp) {
1146                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1147                                 kfree(mp);
1148                         }
1149                         lpfc_nlp_put(ndlp);
1150                         list_del(&mb->list);
1151                         mempool_free(mb, phba->mbox_mem_pool);
1152                 }
1153         }
1154         spin_unlock_irq(&phba->hbalock);
1155
1156         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1157         return ndlp->nlp_state;
1158 }
1159
1160 static uint32_t
1161 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1162                                struct lpfc_nodelist *ndlp,
1163                                void *arg,
1164                                uint32_t evt)
1165 {
1166         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1167
1168         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1169         return ndlp->nlp_state;
1170 }
1171
1172 static uint32_t
1173 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1174                              struct lpfc_nodelist *ndlp,
1175                              void *arg,
1176                              uint32_t evt)
1177 {
1178         struct lpfc_iocbq *cmdiocb;
1179
1180         cmdiocb = (struct lpfc_iocbq *) arg;
1181         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1182         return ndlp->nlp_state;
1183 }
1184
1185 static uint32_t
1186 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1187                                   struct lpfc_nodelist *ndlp,
1188                                   void *arg,
1189                                   uint32_t evt)
1190 {
1191         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1192         struct lpfc_hba  *phba = vport->phba;
1193         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1194         MAILBOX_t *mb = &pmb->mb;
1195         uint32_t did  = mb->un.varWords[1];
1196
1197         if (mb->mbxStatus) {
1198                 /* RegLogin failed */
1199                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
1200                                 "%d (%d):0246 RegLogin failed Data: x%x x%x "
1201                                 "x%x\n",
1202                                 phba->brd_no, vport->vpi,
1203                                 did, mb->mbxStatus, vport->port_state);
1204
1205                 /*
1206                  * If RegLogin failed due to lack of HBA resources do not
1207                  * retry discovery.
1208                  */
1209                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1210                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1211                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1212                         return ndlp->nlp_state;
1213                 }
1214
1215                 /* Put ndlp in npr state set plogi timer for 1 sec */
1216                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1217                 spin_lock_irq(shost->host_lock);
1218                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1219                 spin_unlock_irq(shost->host_lock);
1220                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1221
1222                 lpfc_issue_els_logo(vport, ndlp, 0);
1223                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1224                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1225                 return ndlp->nlp_state;
1226         }
1227
1228         ndlp->nlp_rpi = mb->un.varWords[0];
1229
1230         /* Only if we are not a fabric nport do we issue PRLI */
1231         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1232                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1233                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1234                 lpfc_issue_els_prli(vport, ndlp, 0);
1235         } else {
1236                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1237                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1238         }
1239         return ndlp->nlp_state;
1240 }
1241
1242 static uint32_t
1243 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1244                               struct lpfc_nodelist *ndlp,
1245                               void *arg,
1246                               uint32_t evt)
1247 {
1248         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1249
1250         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1251                 spin_lock_irq(shost->host_lock);
1252                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1253                 spin_unlock_irq(shost->host_lock);
1254                 return ndlp->nlp_state;
1255         } else {
1256                 lpfc_drop_node(vport, ndlp);
1257                 return NLP_STE_FREED_NODE;
1258         }
1259 }
1260
1261 static uint32_t
1262 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1263                                  struct lpfc_nodelist *ndlp,
1264                                  void *arg,
1265                                  uint32_t evt)
1266 {
1267         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1268
1269         /* Don't do anything that will mess up processing of the
1270          * previous RSCN.
1271          */
1272         if (vport->fc_flag & FC_RSCN_DEFERRED)
1273                 return ndlp->nlp_state;
1274
1275         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1276         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1277         spin_lock_irq(shost->host_lock);
1278         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1279         spin_unlock_irq(shost->host_lock);
1280         lpfc_disc_set_adisc(vport, ndlp);
1281         return ndlp->nlp_state;
1282 }
1283
1284 static uint32_t
1285 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1286                           void *arg, uint32_t evt)
1287 {
1288         struct lpfc_iocbq *cmdiocb;
1289
1290         cmdiocb = (struct lpfc_iocbq *) arg;
1291
1292         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1293         return ndlp->nlp_state;
1294 }
1295
1296 static uint32_t
1297 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1298                          void *arg, uint32_t evt)
1299 {
1300         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1301
1302         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1303         return ndlp->nlp_state;
1304 }
1305
1306 static uint32_t
1307 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1308                          void *arg, uint32_t evt)
1309 {
1310         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1311
1312         /* Software abort outstanding PRLI before sending acc */
1313         lpfc_els_abort(vport->phba, ndlp);
1314
1315         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1316         return ndlp->nlp_state;
1317 }
1318
1319 static uint32_t
1320 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1321                            void *arg, uint32_t evt)
1322 {
1323         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1324
1325         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1326         return ndlp->nlp_state;
1327 }
1328
1329 /* This routine is envoked when we rcv a PRLO request from a nport
1330  * we are logged into.  We should send back a PRLO rsp setting the
1331  * appropriate bits.
1332  * NEXT STATE = PRLI_ISSUE
1333  */
1334 static uint32_t
1335 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1336                          void *arg, uint32_t evt)
1337 {
1338         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1339
1340         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1341         return ndlp->nlp_state;
1342 }
1343
1344 static uint32_t
1345 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1346                           void *arg, uint32_t evt)
1347 {
1348         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1349         struct lpfc_iocbq *cmdiocb, *rspiocb;
1350         struct lpfc_hba   *phba = vport->phba;
1351         IOCB_t *irsp;
1352         PRLI *npr;
1353
1354         cmdiocb = (struct lpfc_iocbq *) arg;
1355         rspiocb = cmdiocb->context_un.rsp_iocb;
1356         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1357
1358         irsp = &rspiocb->iocb;
1359         if (irsp->ulpStatus) {
1360                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1361                         phba->cfg_vport_restrict_login) {
1362                         goto out;
1363                 }
1364                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1365                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1366                 return ndlp->nlp_state;
1367         }
1368
1369         /* Check out PRLI rsp */
1370         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1371         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1372         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1373             (npr->prliType == PRLI_FCP_TYPE)) {
1374                 if (npr->initiatorFunc)
1375                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1376                 if (npr->targetFunc)
1377                         ndlp->nlp_type |= NLP_FCP_TARGET;
1378                 if (npr->Retry)
1379                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1380         }
1381         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1382             (vport->port_type == LPFC_NPIV_PORT) &&
1383              phba->cfg_vport_restrict_login) {
1384 out:
1385                 spin_lock_irq(shost->host_lock);
1386                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1387                 spin_unlock_irq(shost->host_lock);
1388                 lpfc_issue_els_logo(vport, ndlp, 0);
1389
1390                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1391                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1392                 return ndlp->nlp_state;
1393         }
1394
1395         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1396         if (ndlp->nlp_type & NLP_FCP_TARGET)
1397                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1398         else
1399                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1400         return ndlp->nlp_state;
1401 }
1402
1403 /*! lpfc_device_rm_prli_issue
1404  *
1405  * \pre
1406  * \post
1407  * \param   phba
1408  * \param   ndlp
1409  * \param   arg
1410  * \param   evt
1411  * \return  uint32_t
1412  *
1413  * \b Description:
1414  *    This routine is envoked when we a request to remove a nport we are in the
1415  *    process of PRLIing. We should software abort outstanding prli, unreg
1416  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1417  *    on plogi list so it can be freed when LOGO completes.
1418  *
1419  */
1420
1421 static uint32_t
1422 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1423                           void *arg, uint32_t evt)
1424 {
1425         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1426
1427         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1428                 spin_lock_irq(shost->host_lock);
1429                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1430                 spin_unlock_irq(shost->host_lock);
1431                 return ndlp->nlp_state;
1432         } else {
1433                 /* software abort outstanding PLOGI */
1434                 lpfc_els_abort(vport->phba, ndlp);
1435
1436                 lpfc_drop_node(vport, ndlp);
1437                 return NLP_STE_FREED_NODE;
1438         }
1439 }
1440
1441
1442 /*! lpfc_device_recov_prli_issue
1443  *
1444  * \pre
1445  * \post
1446  * \param   phba
1447  * \param   ndlp
1448  * \param   arg
1449  * \param   evt
1450  * \return  uint32_t
1451  *
1452  * \b Description:
1453  *    The routine is envoked when the state of a device is unknown, like
1454  *    during a link down. We should remove the nodelist entry from the
1455  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1456  *    outstanding PRLI command, then free the node entry.
1457  */
1458 static uint32_t
1459 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1460                              struct lpfc_nodelist *ndlp,
1461                              void *arg,
1462                              uint32_t evt)
1463 {
1464         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1465         struct lpfc_hba  *phba = vport->phba;
1466
1467         /* Don't do anything that will mess up processing of the
1468          * previous RSCN.
1469          */
1470         if (vport->fc_flag & FC_RSCN_DEFERRED)
1471                 return ndlp->nlp_state;
1472
1473         /* software abort outstanding PRLI */
1474         lpfc_els_abort(phba, ndlp);
1475
1476         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1477         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1478         spin_lock_irq(shost->host_lock);
1479         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1480         spin_unlock_irq(shost->host_lock);
1481         lpfc_disc_set_adisc(vport, ndlp);
1482         return ndlp->nlp_state;
1483 }
1484
1485 static uint32_t
1486 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1487                           void *arg, uint32_t evt)
1488 {
1489         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1490
1491         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1492         return ndlp->nlp_state;
1493 }
1494
1495 static uint32_t
1496 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1497                          void *arg, uint32_t evt)
1498 {
1499         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1500
1501         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1502         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1503         return ndlp->nlp_state;
1504 }
1505
1506 static uint32_t
1507 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1508                          void *arg, uint32_t evt)
1509 {
1510         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1511
1512         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1513         return ndlp->nlp_state;
1514 }
1515
1516 static uint32_t
1517 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1518                            void *arg, uint32_t evt)
1519 {
1520         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1521
1522         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1523         return ndlp->nlp_state;
1524 }
1525
1526 static uint32_t
1527 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1528                          void *arg, uint32_t evt)
1529 {
1530         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1531
1532         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1533         return ndlp->nlp_state;
1534 }
1535
1536 static uint32_t
1537 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1538                              struct lpfc_nodelist *ndlp,
1539                              void *arg,
1540                              uint32_t evt)
1541 {
1542         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1543
1544         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1545         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1546         spin_lock_irq(shost->host_lock);
1547         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1548         spin_unlock_irq(shost->host_lock);
1549         lpfc_disc_set_adisc(vport, ndlp);
1550
1551         return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1556                            void *arg, uint32_t evt)
1557 {
1558         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1559
1560         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1561         return ndlp->nlp_state;
1562 }
1563
1564 static uint32_t
1565 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1566                           void *arg, uint32_t evt)
1567 {
1568         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1569
1570         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1571         return ndlp->nlp_state;
1572 }
1573
1574 static uint32_t
1575 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1576                           void *arg, uint32_t evt)
1577 {
1578         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1579
1580         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1581         return ndlp->nlp_state;
1582 }
1583
1584 static uint32_t
1585 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1586                             struct lpfc_nodelist *ndlp,
1587                             void *arg, uint32_t evt)
1588 {
1589         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1590
1591         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1592         return ndlp->nlp_state;
1593 }
1594
1595 static uint32_t
1596 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1597                           void *arg, uint32_t evt)
1598 {
1599         struct lpfc_hba  *phba = vport->phba;
1600         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1601
1602         /* flush the target */
1603         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1604                             ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1605
1606         /* Treat like rcv logo */
1607         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1608         return ndlp->nlp_state;
1609 }
1610
1611 static uint32_t
1612 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1613                               struct lpfc_nodelist *ndlp,
1614                               void *arg,
1615                               uint32_t evt)
1616 {
1617         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1618
1619         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1620         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1621         spin_lock_irq(shost->host_lock);
1622         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1623         spin_unlock_irq(shost->host_lock);
1624         lpfc_disc_set_adisc(vport, ndlp);
1625         return ndlp->nlp_state;
1626 }
1627
1628 static uint32_t
1629 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1630                         void *arg, uint32_t evt)
1631 {
1632         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1633         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1634
1635         /* Ignore PLOGI if we have an outstanding LOGO */
1636         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1637                 return ndlp->nlp_state;
1638         }
1639
1640         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1641                 spin_lock_irq(shost->host_lock);
1642                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1643                 spin_unlock_irq(shost->host_lock);
1644                 return ndlp->nlp_state;
1645         }
1646
1647         /* send PLOGI immediately, move to PLOGI issue state */
1648         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1649                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1650                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1651                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1652         }
1653
1654         return ndlp->nlp_state;
1655 }
1656
1657 static uint32_t
1658 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1659                        void *arg, uint32_t evt)
1660 {
1661         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1662         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1663         struct ls_rjt     stat;
1664
1665         memset(&stat, 0, sizeof (struct ls_rjt));
1666         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1667         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1668         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1669
1670         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1671                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1672                         spin_lock_irq(shost->host_lock);
1673                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1674                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1675                         spin_unlock_irq(shost->host_lock);
1676                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1677                         lpfc_issue_els_adisc(vport, ndlp, 0);
1678                 } else {
1679                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1680                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1681                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1682                 }
1683         }
1684         return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1689                        void *arg, uint32_t evt)
1690 {
1691         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1692
1693         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1694         return ndlp->nlp_state;
1695 }
1696
1697 static uint32_t
1698 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1699                          void *arg, uint32_t evt)
1700 {
1701         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1702
1703         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1704
1705         /*
1706          * Do not start discovery if discovery is about to start
1707          * or discovery in progress for this node. Starting discovery
1708          * here will affect the counting of discovery threads.
1709          */
1710         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1711             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1712                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1713                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1714                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1715                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1716                         lpfc_issue_els_adisc(vport, ndlp, 0);
1717                 } else {
1718                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1719                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1720                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1721                 }
1722         }
1723         return ndlp->nlp_state;
1724 }
1725
1726 static uint32_t
1727 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1728                        void *arg, uint32_t evt)
1729 {
1730         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1731         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1732
1733         spin_lock_irq(shost->host_lock);
1734         ndlp->nlp_flag |= NLP_LOGO_ACC;
1735         spin_unlock_irq(shost->host_lock);
1736
1737         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1738
1739         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1740                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1741                 spin_lock_irq(shost->host_lock);
1742                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1743                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1744                 spin_unlock_irq(shost->host_lock);
1745                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1746         } else {
1747                 spin_lock_irq(shost->host_lock);
1748                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1749                 spin_unlock_irq(shost->host_lock);
1750         }
1751         return ndlp->nlp_state;
1752 }
1753
1754 static uint32_t
1755 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1756                          void *arg, uint32_t evt)
1757 {
1758         struct lpfc_iocbq *cmdiocb, *rspiocb;
1759         IOCB_t *irsp;
1760
1761         cmdiocb = (struct lpfc_iocbq *) arg;
1762         rspiocb = cmdiocb->context_un.rsp_iocb;
1763
1764         irsp = &rspiocb->iocb;
1765         if (irsp->ulpStatus) {
1766                 lpfc_drop_node(vport, ndlp);
1767                 return NLP_STE_FREED_NODE;
1768         }
1769         return ndlp->nlp_state;
1770 }
1771
1772 static uint32_t
1773 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1774                         void *arg, uint32_t evt)
1775 {
1776         struct lpfc_iocbq *cmdiocb, *rspiocb;
1777         IOCB_t *irsp;
1778
1779         cmdiocb = (struct lpfc_iocbq *) arg;
1780         rspiocb = cmdiocb->context_un.rsp_iocb;
1781
1782         irsp = &rspiocb->iocb;
1783         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1784                 lpfc_drop_node(vport, ndlp);
1785                 return NLP_STE_FREED_NODE;
1786         }
1787         return ndlp->nlp_state;
1788 }
1789
1790 static uint32_t
1791 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1792                         void *arg, uint32_t evt)
1793 {
1794         lpfc_unreg_rpi(vport, ndlp);
1795         /* This routine does nothing, just return the current state */
1796         return ndlp->nlp_state;
1797 }
1798
1799 static uint32_t
1800 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1801                          void *arg, uint32_t evt)
1802 {
1803         struct lpfc_iocbq *cmdiocb, *rspiocb;
1804         IOCB_t *irsp;
1805
1806         cmdiocb = (struct lpfc_iocbq *) arg;
1807         rspiocb = cmdiocb->context_un.rsp_iocb;
1808
1809         irsp = &rspiocb->iocb;
1810         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1811                 lpfc_drop_node(vport, ndlp);
1812                 return NLP_STE_FREED_NODE;
1813         }
1814         return ndlp->nlp_state;
1815 }
1816
1817 static uint32_t
1818 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1819                             struct lpfc_nodelist *ndlp,
1820                             void *arg, uint32_t evt)
1821 {
1822         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1823         MAILBOX_t    *mb = &pmb->mb;
1824
1825         if (!mb->mbxStatus)
1826                 ndlp->nlp_rpi = mb->un.varWords[0];
1827         else {
1828                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1829                         lpfc_drop_node(vport, ndlp);
1830                         return NLP_STE_FREED_NODE;
1831                 }
1832         }
1833         return ndlp->nlp_state;
1834 }
1835
1836 static uint32_t
1837 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1838                         void *arg, uint32_t evt)
1839 {
1840         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1841
1842         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1843                 spin_lock_irq(shost->host_lock);
1844                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1845                 spin_unlock_irq(shost->host_lock);
1846                 return ndlp->nlp_state;
1847         }
1848         lpfc_drop_node(vport, ndlp);
1849         return NLP_STE_FREED_NODE;
1850 }
1851
1852 static uint32_t
1853 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1854                            void *arg, uint32_t evt)
1855 {
1856         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1857
1858         /* Don't do anything that will mess up processing of the
1859          * previous RSCN.
1860          */
1861         if (vport->fc_flag & FC_RSCN_DEFERRED)
1862                 return ndlp->nlp_state;
1863
1864         spin_lock_irq(shost->host_lock);
1865         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1866         spin_unlock_irq(shost->host_lock);
1867         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1868                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1869         }
1870         return ndlp->nlp_state;
1871 }
1872
1873
1874 /* This next section defines the NPort Discovery State Machine */
1875
1876 /* There are 4 different double linked lists nodelist entries can reside on.
1877  * The plogi list and adisc list are used when Link Up discovery or RSCN
1878  * processing is needed. Each list holds the nodes that we will send PLOGI
1879  * or ADISC on. These lists will keep track of what nodes will be effected
1880  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1881  * The unmapped_list will contain all nodes that we have successfully logged
1882  * into at the Fibre Channel level. The mapped_list will contain all nodes
1883  * that are mapped FCP targets.
1884  */
1885 /*
1886  * The bind list is a list of undiscovered (potentially non-existent) nodes
1887  * that we have saved binding information on. This information is used when
1888  * nodes transition from the unmapped to the mapped list.
1889  */
1890 /* For UNUSED_NODE state, the node has just been allocated .
1891  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1892  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1893  * and put on the unmapped list. For ADISC processing, the node is taken off
1894  * the ADISC list and placed on either the mapped or unmapped list (depending
1895  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1896  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1897  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1898  * node, the node is taken off the unmapped list. The binding list is checked
1899  * for a valid binding, or a binding is automatically assigned. If binding
1900  * assignment is unsuccessful, the node is left on the unmapped list. If
1901  * binding assignment is successful, the associated binding list entry (if
1902  * any) is removed, and the node is placed on the mapped list.
1903  */
1904 /*
1905  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1906  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1907  * expire, all effected nodes will receive a DEVICE_RM event.
1908  */
1909 /*
1910  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1911  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1912  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1913  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1914  * we will first process the ADISC list.  32 entries are processed initially and
1915  * ADISC is initited for each one.  Completions / Events for each node are
1916  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1917  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1918  * waiting, and the ADISC list count is identically 0, then we are done. For
1919  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1920  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1921  * list.  32 entries are processed initially and PLOGI is initited for each one.
1922  * Completions / Events for each node are funnelled thru the state machine.  As
1923  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1924  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1925  * indentically 0, then we are done. We have now completed discovery / RSCN
1926  * handling. Upon completion, ALL nodes should be on either the mapped or
1927  * unmapped lists.
1928  */
1929
1930 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1931      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1932         /* Action routine                  Event       Current State  */
1933         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1934         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1935         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1936         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1937         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1938         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1939         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1940         lpfc_disc_illegal,              /* CMPL_PRLI       */
1941         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1942         lpfc_disc_illegal,              /* CMPL_ADISC      */
1943         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1944         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1945         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1946
1947         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1948         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
1949         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1950         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1951         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1952         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1953         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1954         lpfc_disc_illegal,              /* CMPL_PRLI       */
1955         lpfc_disc_illegal,              /* CMPL_LOGO       */
1956         lpfc_disc_illegal,              /* CMPL_ADISC      */
1957         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1958         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1959         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1960
1961         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1962         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1963         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1964         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1965         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1966         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1967         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1968         lpfc_disc_illegal,              /* CMPL_PRLI       */
1969         lpfc_disc_illegal,              /* CMPL_LOGO       */
1970         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1971         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1972         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1973         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1974
1975         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1976         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1977         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1978         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1979         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1980         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1981         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1982         lpfc_disc_illegal,              /* CMPL_PRLI       */
1983         lpfc_disc_illegal,              /* CMPL_LOGO       */
1984         lpfc_disc_illegal,              /* CMPL_ADISC      */
1985         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1986         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1987         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1988
1989         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1990         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1991         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1992         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1993         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1994         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1995         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1996         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1997         lpfc_disc_illegal,              /* CMPL_LOGO       */
1998         lpfc_disc_illegal,              /* CMPL_ADISC      */
1999         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2000         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2001         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2002
2003         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2004         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2005         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2006         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2007         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2008         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2009         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2010         lpfc_disc_illegal,              /* CMPL_PRLI       */
2011         lpfc_disc_illegal,              /* CMPL_LOGO       */
2012         lpfc_disc_illegal,              /* CMPL_ADISC      */
2013         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2014         lpfc_disc_illegal,              /* DEVICE_RM       */
2015         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2016
2017         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2018         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2019         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2020         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2021         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2022         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2023         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2024         lpfc_disc_illegal,              /* CMPL_PRLI       */
2025         lpfc_disc_illegal,              /* CMPL_LOGO       */
2026         lpfc_disc_illegal,              /* CMPL_ADISC      */
2027         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2028         lpfc_disc_illegal,              /* DEVICE_RM       */
2029         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2030
2031         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2032         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2033         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2034         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2035         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2036         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2037         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2038         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2039         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2040         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2041         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2042         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2043         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2044 };
2045
2046 int
2047 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2048                         void *arg, uint32_t evt)
2049 {
2050         struct lpfc_hba  *phba = vport->phba;
2051         uint32_t cur_state, rc;
2052         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2053                          uint32_t);
2054
2055         lpfc_nlp_get(ndlp);
2056         cur_state = ndlp->nlp_state;
2057
2058         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2059         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2060                         "%d (%d):0211 DSM in event x%x on NPort x%x in "
2061                         "state %d Data: x%x\n",
2062                         phba->brd_no, vport->vpi,
2063                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2064
2065         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2066                  "DSM in:          evt:%d ste:%d did:x%x",
2067                 evt, cur_state, ndlp->nlp_DID);
2068
2069         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2070         rc = (func) (vport, ndlp, arg, evt);
2071
2072         /* DSM out state <rc> on NPort <nlp_DID> */
2073         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2074                         "%d (%d):0212 DSM out state %d on NPort x%x "
2075                         "Data: x%x\n",
2076                         phba->brd_no, vport->vpi,
2077                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2078
2079         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2080                  "DSM out:         ste:%d did:x%x flg:x%x",
2081                 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2082
2083         lpfc_nlp_put(ndlp);
2084
2085         return rc;
2086 }