SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/scsi/lpfc/lpfc_nportdisc.c

   1  /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 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_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 137                          "0207 Device %x "
 138                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 139                          "invalid service parameters.  Ignoring device.\n",
 140                          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_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 198                          "0205 Abort outstanding I/O on NPort x%x "
 199                          "Data: x%x x%x x%x\n",
 200                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 201                          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_vlog(vport, KERN_INFO, LOG_ELS,
 302                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 303                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 304                          ndlp->nlp_rpi);
 305
 306         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 307                 ndlp->nlp_fcp_info |= CLASS2;
 308         else
 309                 ndlp->nlp_fcp_info |= CLASS3;
 310
 311         ndlp->nlp_class_sup = 0;
 312         if (sp->cls1.classValid)
 313                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 314         if (sp->cls2.classValid)
 315                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 316         if (sp->cls3.classValid)
 317                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 318         if (sp->cls4.classValid)
 319                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 320         ndlp->nlp_maxframe =
 321                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 322
 323         /* no need to reg_login if we are already in one of these states */
 324         switch (ndlp->nlp_state) {
 325         case  NLP_STE_NPR_NODE:
 326                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 327                         break;
 328         case  NLP_STE_REG_LOGIN_ISSUE:
 329         case  NLP_STE_PRLI_ISSUE:
 330         case  NLP_STE_UNMAPPED_NODE:
 331         case  NLP_STE_MAPPED_NODE:
 332                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 333                 return 1;
 334         }
 335
 336         if ((vport->fc_flag & FC_PT2PT) &&
 337             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 338                 /* rcv'ed PLOGI decides what our NPortId will be */
 339                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 340                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 341                 if (mbox == NULL)
 342                         goto out;
 343                 lpfc_config_link(phba, mbox);
 344                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 345                 mbox->vport = vport;
 346                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 347                 if (rc == MBX_NOT_FINISHED) {
 348                         mempool_free(mbox, phba->mbox_mem_pool);
 349                         goto out;
 350                 }
 351
 352                 lpfc_can_disctmo(vport);
 353         }
 354         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 355         if (!mbox)
 356                 goto out;
 357
 358         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 359                             (uint8_t *) sp, mbox, 0);
 360         if (rc) {
 361                 mempool_free(mbox, phba->mbox_mem_pool);
 362                 goto out;
 363         }
 364
 365         /* ACC PLOGI rsp command needs to execute first,
 366          * queue this mbox command to be processed later.
 367          */
 368         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 369         /*
 370          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 371          * command issued in lpfc_cmpl_els_acc().
 372          */
 373         mbox->vport = vport;
 374         spin_lock_irq(shost->host_lock);
 375         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 376         spin_unlock_irq(shost->host_lock);
 377
 378         /*
 379          * If there is an outstanding PLOGI issued, abort it before
 380          * sending ACC rsp for received PLOGI. If pending plogi
 381          * is not canceled here, the plogi will be rejected by
 382          * remote port and will be retried. On a configuration with
 383          * single discovery thread, this will cause a huge delay in
 384          * discovery. Also this will cause multiple state machines
 385          * running in parallel for this node.
 386          */
 387         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 388                 /* software abort outstanding PLOGI */
 389                 lpfc_els_abort(phba, ndlp);
 390         }
 391
 392         if ((vport->port_type == LPFC_NPIV_PORT &&
 393              vport->cfg_restrict_login)) {
 394
 395                 /* In order to preserve RPIs, we want to cleanup
 396                  * the default RPI the firmware created to rcv
 397                  * this ELS request. The only way to do this is
 398                  * to register, then unregister the RPI.
 399                  */
 400                 spin_lock_irq(shost->host_lock);
 401                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 402                 spin_unlock_irq(shost->host_lock);
 403                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 404                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 405                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 406                         ndlp, mbox);
 407                 return 1;
 408         }
 409
 410         /* If the remote NPort logs into us, before we can initiate
 411          * discovery to them, cleanup the NPort from discovery accordingly.
 412          */
 413         if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
 414                 spin_lock_irq(shost->host_lock);
 415                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 416                 spin_unlock_irq(shost->host_lock);
 417                 del_timer_sync(&ndlp->nlp_delayfunc);
 418                 ndlp->nlp_last_elscmd = 0;
 419
 420                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 421                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 422
 423                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 424                         spin_lock_irq(shost->host_lock);
 425                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 426                         spin_unlock_irq(shost->host_lock);
 427                                 if (vport->num_disc_nodes) {
 428                                 /* Check to see if there are more
 429                                  * PLOGIs to be sent
 430                                  */
 431                                 lpfc_more_plogi(vport);
 432
 433                                 if (vport->num_disc_nodes == 0) {
 434                                         spin_lock_irq(shost->host_lock);
 435                                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
 436                                         spin_unlock_irq(shost->host_lock);
 437                                         lpfc_can_disctmo(vport);
 438                                         lpfc_end_rscn(vport);
 439                                 }
 440                         }
 441                 }
 442         }
 443
 444         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 445         return 1;
 446
 447 out:
 448         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 449         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 450         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 451         return 0;
 452 }
 453
 454 static int
 455 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 456                 struct lpfc_iocbq *cmdiocb)
 457 {
 458         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 459         struct lpfc_dmabuf *pcmd;
 460         struct serv_parm   *sp;
 461         struct lpfc_name   *pnn, *ppn;
 462         struct ls_rjt stat;
 463         ADISC *ap;
 464         IOCB_t *icmd;
 465         uint32_t *lp;
 466         uint32_t cmd;
 467
 468         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 469         lp = (uint32_t *) pcmd->virt;
 470
 471         cmd = *lp++;
 472         if (cmd == ELS_CMD_ADISC) {
 473                 ap = (ADISC *) lp;
 474                 pnn = (struct lpfc_name *) & ap->nodeName;
 475                 ppn = (struct lpfc_name *) & ap->portName;
 476         } else {
 477                 sp = (struct serv_parm *) lp;
 478                 pnn = (struct lpfc_name *) & sp->nodeName;
 479                 ppn = (struct lpfc_name *) & sp->portName;
 480         }
 481
 482         icmd = &cmdiocb->iocb;
 483         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 484                 if (cmd == ELS_CMD_ADISC) {
 485                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 486                 } else {
 487                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 488                                          NULL);
 489                 }
 490                 return 1;
 491         }
 492         /* Reject this request because invalid parameters */
 493         stat.un.b.lsRjtRsvd0 = 0;
 494         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 495         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 496         stat.un.b.vendorUnique = 0;
 497         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 498
 499         /* 1 sec timeout */
 500         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 501
 502         spin_lock_irq(shost->host_lock);
 503         ndlp->nlp_flag |= NLP_DELAY_TMO;
 504         spin_unlock_irq(shost->host_lock);
 505         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 506         ndlp->nlp_prev_state = ndlp->nlp_state;
 507         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 508         return 0;
 509 }
 510
 511 static int
 512 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 513               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 514 {
 515         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 516
 517         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 518         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 519          * PLOGIs during LOGO storms from a device.
 520          */
 521         spin_lock_irq(shost->host_lock);
 522         ndlp->nlp_flag |= NLP_LOGO_ACC;
 523         spin_unlock_irq(shost->host_lock);
 524         if (els_cmd == ELS_CMD_PRLO)
 525                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 526         else
 527                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 528
 529         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 530             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 531                 /* Only try to re-login if this is NOT a Fabric Node */
 532                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 533                 spin_lock_irq(shost->host_lock);
 534                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 535                 spin_unlock_irq(shost->host_lock);
 536
 537                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 538         }
 539         ndlp->nlp_prev_state = ndlp->nlp_state;
 540         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 541
 542         spin_lock_irq(shost->host_lock);
 543         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 544         spin_unlock_irq(shost->host_lock);
 545         /* The driver has to wait until the ACC completes before it continues
 546          * processing the LOGO.  The action will resume in
 547          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 548          * unreg_login, the driver waits so the ACC does not get aborted.
 549          */
 550         return 0;
 551 }
 552
 553 static void
 554 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 555               struct lpfc_iocbq *cmdiocb)
 556 {
 557         struct lpfc_dmabuf *pcmd;
 558         uint32_t *lp;
 559         PRLI *npr;
 560         struct fc_rport *rport = ndlp->rport;
 561         u32 roles;
 562
 563         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 564         lp = (uint32_t *) pcmd->virt;
 565         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 566
 567         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 568         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 569         if (npr->prliType == PRLI_FCP_TYPE) {
 570                 if (npr->initiatorFunc)
 571                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 572                 if (npr->targetFunc)
 573                         ndlp->nlp_type |= NLP_FCP_TARGET;
 574                 if (npr->Retry)
 575                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 576         }
 577         if (rport) {
 578                 /* We need to update the rport role values */
 579                 roles = FC_RPORT_ROLE_UNKNOWN;
 580                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 581                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 582                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 583                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 584
 585                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 586                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 587                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 588
 589                 fc_remote_port_rolechg(rport, roles);
 590         }
 591 }
 592
 593 static uint32_t
 594 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 595 {
 596         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 597
 598         if (!ndlp->nlp_rpi) {
 599                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 600                 return 0;
 601         }
 602
 603         /* Check config parameter use-adisc or FCP-2 */
 604         if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 605             ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 606                 spin_lock_irq(shost->host_lock);
 607                 ndlp->nlp_flag |= NLP_NPR_ADISC;
 608                 spin_unlock_irq(shost->host_lock);
 609                 return 1;
 610         }
 611         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 612         lpfc_unreg_rpi(vport, ndlp);
 613         return 0;
 614 }
 615
 616 static uint32_t
 617 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 618                   void *arg, uint32_t evt)
 619 {
 620         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 621                          "0253 Illegal State Transition: node x%x "
 622                          "event x%x, state x%x Data: x%x x%x\n",
 623                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 624                          ndlp->nlp_flag);
 625         return ndlp->nlp_state;
 626 }
 627
 628 static uint32_t
 629 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 630                   void *arg, uint32_t evt)
 631 {
 632         /* This transition is only legal if we previously
 633          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 634          * working on the same NPortID, do nothing for this thread
 635          * to stop it.
 636          */
 637         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 638                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 639                          "0253 Illegal State Transition: node x%x "
 640                          "event x%x, state x%x Data: x%x x%x\n",
 641                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 642                          ndlp->nlp_flag);
 643         }
 644         return ndlp->nlp_state;
 645 }
 646
 647 /* Start of Discovery State Machine routines */
 648
 649 static uint32_t
 650 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 651                            void *arg, uint32_t evt)
 652 {
 653         struct lpfc_iocbq *cmdiocb;
 654
 655         cmdiocb = (struct lpfc_iocbq *) arg;
 656
 657         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 658                 return ndlp->nlp_state;
 659         }
 660         return NLP_STE_FREED_NODE;
 661 }
 662
 663 static uint32_t
 664 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 665                          void *arg, uint32_t evt)
 666 {
 667         lpfc_issue_els_logo(vport, ndlp, 0);
 668         return ndlp->nlp_state;
 669 }
 670
 671 static uint32_t
 672 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 673                           void *arg, uint32_t evt)
 674 {
 675         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 676         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 677
 678         spin_lock_irq(shost->host_lock);
 679         ndlp->nlp_flag |= NLP_LOGO_ACC;
 680         spin_unlock_irq(shost->host_lock);
 681         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 682
 683         return ndlp->nlp_state;
 684 }
 685
 686 static uint32_t
 687 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 688                            void *arg, uint32_t evt)
 689 {
 690         return NLP_STE_FREED_NODE;
 691 }
 692
 693 static uint32_t
 694 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 695                            void *arg, uint32_t evt)
 696 {
 697         return NLP_STE_FREED_NODE;
 698 }
 699
 700 static uint32_t
 701 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 702                            void *arg, uint32_t evt)
 703 {
 704         struct lpfc_hba   *phba = vport->phba;
 705         struct lpfc_iocbq *cmdiocb = arg;
 706         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 707         uint32_t *lp = (uint32_t *) pcmd->virt;
 708         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 709         struct ls_rjt stat;
 710         int port_cmp;
 711
 712         memset(&stat, 0, sizeof (struct ls_rjt));
 713
 714         /* For a PLOGI, we only accept if our portname is less
 715          * than the remote portname.
 716          */
 717         phba->fc_stat.elsLogiCol++;
 718         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 719                           sizeof(struct lpfc_name));
 720
 721         if (port_cmp >= 0) {
 722                 /* Reject this request because the remote node will accept
 723                    ours */
 724                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 725                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 726                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 727                         NULL);
 728         } else {
 729                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
 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 lpfc_iocbq  *cmdiocb, *rspiocb;
 799         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 800         uint32_t *lp;
 801         IOCB_t *irsp;
 802         struct serv_parm *sp;
 803         LPFC_MBOXQ_t *mbox;
 804
 805         cmdiocb = (struct lpfc_iocbq *) arg;
 806         rspiocb = cmdiocb->context_un.rsp_iocb;
 807
 808         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 809                 /* Recovery from PLOGI collision logic */
 810                 return ndlp->nlp_state;
 811         }
 812
 813         irsp = &rspiocb->iocb;
 814
 815         if (irsp->ulpStatus)
 816                 goto out;
 817
 818         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 819
 820         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 821
 822         lp = (uint32_t *) prsp->virt;
 823         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 824         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 825                 goto out;
 826         /* PLOGI chkparm OK */
 827         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 828                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 829                          ndlp->nlp_DID, ndlp->nlp_state,
 830                          ndlp->nlp_flag, ndlp->nlp_rpi);
 831         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 832                 ndlp->nlp_fcp_info |= CLASS2;
 833         else
 834                 ndlp->nlp_fcp_info |= CLASS3;
 835
 836         ndlp->nlp_class_sup = 0;
 837         if (sp->cls1.classValid)
 838                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 839         if (sp->cls2.classValid)
 840                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 841         if (sp->cls3.classValid)
 842                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 843         if (sp->cls4.classValid)
 844                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 845         ndlp->nlp_maxframe =
 846                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 847
 848         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 849         if (!mbox) {
 850                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 851                         "0133 PLOGI: no memory for reg_login "
 852                         "Data: x%x x%x x%x x%x\n",
 853                         ndlp->nlp_DID, ndlp->nlp_state,
 854                         ndlp->nlp_flag, ndlp->nlp_rpi);
 855                 goto out;
 856         }
 857
 858         lpfc_unreg_rpi(vport, ndlp);
 859
 860         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 861                            (uint8_t *) sp, mbox, 0) == 0) {
 862                 switch (ndlp->nlp_DID) {
 863                 case NameServer_DID:
 864                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 865                         break;
 866                 case FDMI_DID:
 867                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 868                         break;
 869                 default:
 870                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 871                 }
 872                 mbox->context2 = lpfc_nlp_get(ndlp);
 873                 mbox->vport = vport;
 874                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 875                     != MBX_NOT_FINISHED) {
 876                         lpfc_nlp_set_state(vport, ndlp,
 877                                            NLP_STE_REG_LOGIN_ISSUE);
 878                         return ndlp->nlp_state;
 879                 }
 880                 lpfc_nlp_put(ndlp);
 881                 mp = (struct lpfc_dmabuf *) mbox->context1;
 882                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 883                 kfree(mp);
 884                 mempool_free(mbox, phba->mbox_mem_pool);
 885
 886                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 887                                  "0134 PLOGI: cannot issue reg_login "
 888                                  "Data: x%x x%x x%x x%x\n",
 889                                  ndlp->nlp_DID, ndlp->nlp_state,
 890                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 891         } else {
 892                 mempool_free(mbox, phba->mbox_mem_pool);
 893
 894                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 895                                  "0135 PLOGI: cannot format reg_login "
 896                                  "Data: x%x x%x x%x x%x\n",
 897                                  ndlp->nlp_DID, ndlp->nlp_state,
 898                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 899         }
 900
 901
 902 out:
 903         if (ndlp->nlp_DID == NameServer_DID) {
 904                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 905                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 906                                  "0261 Cannot Register NameServer login\n");
 907         }
 908
 909         /* Free this node since the driver cannot login or has the wrong
 910            sparm */
 911         lpfc_nlp_not_used(ndlp);
 912         return NLP_STE_FREED_NODE;
 913 }
 914
 915 static uint32_t
 916 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 917                            void *arg, uint32_t evt)
 918 {
 919         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 920
 921         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 922                 spin_lock_irq(shost->host_lock);
 923                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 924                 spin_unlock_irq(shost->host_lock);
 925                 return ndlp->nlp_state;
 926         } else {
 927                 /* software abort outstanding PLOGI */
 928                 lpfc_els_abort(vport->phba, ndlp);
 929
 930                 lpfc_drop_node(vport, ndlp);
 931                 return NLP_STE_FREED_NODE;
 932         }
 933 }
 934
 935 static uint32_t
 936 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 937                               struct lpfc_nodelist *ndlp,
 938                               void *arg,
 939                               uint32_t evt)
 940 {
 941         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 942         struct lpfc_hba  *phba = vport->phba;
 943
 944         /* Don't do anything that will mess up processing of the
 945          * previous RSCN.
 946          */
 947         if (vport->fc_flag & FC_RSCN_DEFERRED)
 948                 return ndlp->nlp_state;
 949
 950         /* software abort outstanding PLOGI */
 951         lpfc_els_abort(phba, ndlp);
 952
 953         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 954         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 955         spin_lock_irq(shost->host_lock);
 956         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 957         spin_unlock_irq(shost->host_lock);
 958
 959         return ndlp->nlp_state;
 960 }
 961
 962 static uint32_t
 963 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 964                            void *arg, uint32_t evt)
 965 {
 966         struct lpfc_hba   *phba = vport->phba;
 967         struct lpfc_iocbq *cmdiocb;
 968
 969         /* software abort outstanding ADISC */
 970         lpfc_els_abort(phba, ndlp);
 971
 972         cmdiocb = (struct lpfc_iocbq *) arg;
 973
 974         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
 975                 return ndlp->nlp_state;
 976
 977         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 978         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
 979         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
 980
 981         return ndlp->nlp_state;
 982 }
 983
 984 static uint32_t
 985 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 986                           void *arg, uint32_t evt)
 987 {
 988         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 989
 990         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
 991         return ndlp->nlp_state;
 992 }
 993
 994 static uint32_t
 995 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 996                           void *arg, uint32_t evt)
 997 {
 998         struct lpfc_hba *phba = vport->phba;
 999         struct lpfc_iocbq *cmdiocb;
1000
1001         cmdiocb = (struct lpfc_iocbq *) arg;
1002
1003         /* software abort outstanding ADISC */
1004         lpfc_els_abort(phba, ndlp);
1005
1006         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1007         return ndlp->nlp_state;
1008 }
1009
1010 static uint32_t
1011 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1012                             struct lpfc_nodelist *ndlp,
1013                             void *arg, uint32_t evt)
1014 {
1015         struct lpfc_iocbq *cmdiocb;
1016
1017         cmdiocb = (struct lpfc_iocbq *) arg;
1018
1019         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1020         return ndlp->nlp_state;
1021 }
1022
1023 static uint32_t
1024 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1025                           void *arg, uint32_t evt)
1026 {
1027         struct lpfc_iocbq *cmdiocb;
1028
1029         cmdiocb = (struct lpfc_iocbq *) arg;
1030
1031         /* Treat like rcv logo */
1032         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1033         return ndlp->nlp_state;
1034 }
1035
1036 static uint32_t
1037 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1038                             struct lpfc_nodelist *ndlp,
1039                             void *arg, uint32_t evt)
1040 {
1041         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1042         struct lpfc_hba   *phba = vport->phba;
1043         struct lpfc_iocbq *cmdiocb, *rspiocb;
1044         IOCB_t *irsp;
1045         ADISC *ap;
1046
1047         cmdiocb = (struct lpfc_iocbq *) arg;
1048         rspiocb = cmdiocb->context_un.rsp_iocb;
1049
1050         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1051         irsp = &rspiocb->iocb;
1052
1053         if ((irsp->ulpStatus) ||
1054             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1055                 /* 1 sec timeout */
1056                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1057                 spin_lock_irq(shost->host_lock);
1058                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1059                 spin_unlock_irq(shost->host_lock);
1060                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1061
1062                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1063                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1064
1065                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1066                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1067                 lpfc_unreg_rpi(vport, ndlp);
1068                 return ndlp->nlp_state;
1069         }
1070
1071         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1072                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1073                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1074         } else {
1075                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1076                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1077         }
1078         return ndlp->nlp_state;
1079 }
1080
1081 static uint32_t
1082 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1083                            void *arg, uint32_t evt)
1084 {
1085         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1086
1087         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1088                 spin_lock_irq(shost->host_lock);
1089                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1090                 spin_unlock_irq(shost->host_lock);
1091                 return ndlp->nlp_state;
1092         } else {
1093                 /* software abort outstanding ADISC */
1094                 lpfc_els_abort(vport->phba, ndlp);
1095
1096                 lpfc_drop_node(vport, ndlp);
1097                 return NLP_STE_FREED_NODE;
1098         }
1099 }
1100
1101 static uint32_t
1102 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1103                               struct lpfc_nodelist *ndlp,
1104                               void *arg,
1105                               uint32_t evt)
1106 {
1107         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1108         struct lpfc_hba  *phba = vport->phba;
1109
1110         /* Don't do anything that will mess up processing of the
1111          * previous RSCN.
1112          */
1113         if (vport->fc_flag & FC_RSCN_DEFERRED)
1114                 return ndlp->nlp_state;
1115
1116         /* software abort outstanding ADISC */
1117         lpfc_els_abort(phba, ndlp);
1118
1119         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1120         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1121         spin_lock_irq(shost->host_lock);
1122         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1123         spin_unlock_irq(shost->host_lock);
1124         lpfc_disc_set_adisc(vport, ndlp);
1125         return ndlp->nlp_state;
1126 }
1127
1128 static uint32_t
1129 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1130                               struct lpfc_nodelist *ndlp,
1131                               void *arg,
1132                               uint32_t evt)
1133 {
1134         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1135
1136         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1137         return ndlp->nlp_state;
1138 }
1139
1140 static uint32_t
1141 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1142                              struct lpfc_nodelist *ndlp,
1143                              void *arg,
1144                              uint32_t evt)
1145 {
1146         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1147
1148         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1149         return ndlp->nlp_state;
1150 }
1151
1152 static uint32_t
1153 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1154                              struct lpfc_nodelist *ndlp,
1155                              void *arg,
1156                              uint32_t evt)
1157 {
1158         struct lpfc_hba   *phba = vport->phba;
1159         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1160         LPFC_MBOXQ_t      *mb;
1161         LPFC_MBOXQ_t      *nextmb;
1162         struct lpfc_dmabuf *mp;
1163
1164         cmdiocb = (struct lpfc_iocbq *) arg;
1165
1166         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1167         if ((mb = phba->sli.mbox_active)) {
1168                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1169                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1170                         lpfc_nlp_put(ndlp);
1171                         mb->context2 = NULL;
1172                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1173                 }
1174         }
1175
1176         spin_lock_irq(&phba->hbalock);
1177         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1178                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1179                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1180                         mp = (struct lpfc_dmabuf *) (mb->context1);
1181                         if (mp) {
1182                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1183                                 kfree(mp);
1184                         }
1185                         lpfc_nlp_put(ndlp);
1186                         list_del(&mb->list);
1187                         mempool_free(mb, phba->mbox_mem_pool);
1188                 }
1189         }
1190         spin_unlock_irq(&phba->hbalock);
1191
1192         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1193         return ndlp->nlp_state;
1194 }
1195
1196 static uint32_t
1197 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1198                                struct lpfc_nodelist *ndlp,
1199                                void *arg,
1200                                uint32_t evt)
1201 {
1202         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1203
1204         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1205         return ndlp->nlp_state;
1206 }
1207
1208 static uint32_t
1209 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1210                              struct lpfc_nodelist *ndlp,
1211                              void *arg,
1212                              uint32_t evt)
1213 {
1214         struct lpfc_iocbq *cmdiocb;
1215
1216         cmdiocb = (struct lpfc_iocbq *) arg;
1217         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1218         return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1223                                   struct lpfc_nodelist *ndlp,
1224                                   void *arg,
1225                                   uint32_t evt)
1226 {
1227         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1228         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1229         MAILBOX_t *mb = &pmb->mb;
1230         uint32_t did  = mb->un.varWords[1];
1231
1232         if (mb->mbxStatus) {
1233                 /* RegLogin failed */
1234                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1235                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1236                                 did, mb->mbxStatus, vport->port_state);
1237                 /*
1238                  * If RegLogin failed due to lack of HBA resources do not
1239                  * retry discovery.
1240                  */
1241                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1242                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1243                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1244                         return ndlp->nlp_state;
1245                 }
1246
1247                 /* Put ndlp in npr state set plogi timer for 1 sec */
1248                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1249                 spin_lock_irq(shost->host_lock);
1250                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1251                 spin_unlock_irq(shost->host_lock);
1252                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1253
1254                 lpfc_issue_els_logo(vport, ndlp, 0);
1255                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1256                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1257                 return ndlp->nlp_state;
1258         }
1259
1260         ndlp->nlp_rpi = mb->un.varWords[0];
1261
1262         /* Only if we are not a fabric nport do we issue PRLI */
1263         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1264                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1265                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1266                 lpfc_issue_els_prli(vport, ndlp, 0);
1267         } else {
1268                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1269                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1270         }
1271         return ndlp->nlp_state;
1272 }
1273
1274 static uint32_t
1275 lpfc_device_rm_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
1282         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1283                 spin_lock_irq(shost->host_lock);
1284                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1285                 spin_unlock_irq(shost->host_lock);
1286                 return ndlp->nlp_state;
1287         } else {
1288                 lpfc_drop_node(vport, ndlp);
1289                 return NLP_STE_FREED_NODE;
1290         }
1291 }
1292
1293 static uint32_t
1294 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1295                                  struct lpfc_nodelist *ndlp,
1296                                  void *arg,
1297                                  uint32_t evt)
1298 {
1299         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1300
1301         /* Don't do anything that will mess up processing of the
1302          * previous RSCN.
1303          */
1304         if (vport->fc_flag & FC_RSCN_DEFERRED)
1305                 return ndlp->nlp_state;
1306
1307         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1308         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1309         spin_lock_irq(shost->host_lock);
1310         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1311         spin_unlock_irq(shost->host_lock);
1312         lpfc_disc_set_adisc(vport, ndlp);
1313         return ndlp->nlp_state;
1314 }
1315
1316 static uint32_t
1317 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1318                           void *arg, uint32_t evt)
1319 {
1320         struct lpfc_iocbq *cmdiocb;
1321
1322         cmdiocb = (struct lpfc_iocbq *) arg;
1323
1324         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1325         return ndlp->nlp_state;
1326 }
1327
1328 static uint32_t
1329 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1330                          void *arg, uint32_t evt)
1331 {
1332         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1333
1334         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1335         return ndlp->nlp_state;
1336 }
1337
1338 static uint32_t
1339 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1340                          void *arg, uint32_t evt)
1341 {
1342         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1343
1344         /* Software abort outstanding PRLI before sending acc */
1345         lpfc_els_abort(vport->phba, ndlp);
1346
1347         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1348         return ndlp->nlp_state;
1349 }
1350
1351 static uint32_t
1352 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1353                            void *arg, uint32_t evt)
1354 {
1355         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1356
1357         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1358         return ndlp->nlp_state;
1359 }
1360
1361 /* This routine is envoked when we rcv a PRLO request from a nport
1362  * we are logged into.  We should send back a PRLO rsp setting the
1363  * appropriate bits.
1364  * NEXT STATE = PRLI_ISSUE
1365  */
1366 static uint32_t
1367 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1368                          void *arg, uint32_t evt)
1369 {
1370         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1371
1372         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1373         return ndlp->nlp_state;
1374 }
1375
1376 static uint32_t
1377 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1378                           void *arg, uint32_t evt)
1379 {
1380         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1381         struct lpfc_iocbq *cmdiocb, *rspiocb;
1382         struct lpfc_hba   *phba = vport->phba;
1383         IOCB_t *irsp;
1384         PRLI *npr;
1385
1386         cmdiocb = (struct lpfc_iocbq *) arg;
1387         rspiocb = cmdiocb->context_un.rsp_iocb;
1388         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1389
1390         irsp = &rspiocb->iocb;
1391         if (irsp->ulpStatus) {
1392                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1393                     vport->cfg_restrict_login) {
1394                         goto out;
1395                 }
1396                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1397                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1398                 return ndlp->nlp_state;
1399         }
1400
1401         /* Check out PRLI rsp */
1402         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1403         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1404         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1405             (npr->prliType == PRLI_FCP_TYPE)) {
1406                 if (npr->initiatorFunc)
1407                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1408                 if (npr->targetFunc)
1409                         ndlp->nlp_type |= NLP_FCP_TARGET;
1410                 if (npr->Retry)
1411                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1412         }
1413         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1414             (vport->port_type == LPFC_NPIV_PORT) &&
1415              vport->cfg_restrict_login) {
1416 out:
1417                 spin_lock_irq(shost->host_lock);
1418                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1419                 spin_unlock_irq(shost->host_lock);
1420                 lpfc_issue_els_logo(vport, ndlp, 0);
1421
1422                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1423                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1424                 return ndlp->nlp_state;
1425         }
1426
1427         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1428         if (ndlp->nlp_type & NLP_FCP_TARGET)
1429                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1430         else
1431                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1432         return ndlp->nlp_state;
1433 }
1434
1435 /*! lpfc_device_rm_prli_issue
1436  *
1437  * \pre
1438  * \post
1439  * \param   phba
1440  * \param   ndlp
1441  * \param   arg
1442  * \param   evt
1443  * \return  uint32_t
1444  *
1445  * \b Description:
1446  *    This routine is envoked when we a request to remove a nport we are in the
1447  *    process of PRLIing. We should software abort outstanding prli, unreg
1448  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1449  *    on plogi list so it can be freed when LOGO completes.
1450  *
1451  */
1452
1453 static uint32_t
1454 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1455                           void *arg, uint32_t evt)
1456 {
1457         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1458
1459         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1460                 spin_lock_irq(shost->host_lock);
1461                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1462                 spin_unlock_irq(shost->host_lock);
1463                 return ndlp->nlp_state;
1464         } else {
1465                 /* software abort outstanding PLOGI */
1466                 lpfc_els_abort(vport->phba, ndlp);
1467
1468                 lpfc_drop_node(vport, ndlp);
1469                 return NLP_STE_FREED_NODE;
1470         }
1471 }
1472
1473
1474 /*! lpfc_device_recov_prli_issue
1475  *
1476  * \pre
1477  * \post
1478  * \param   phba
1479  * \param   ndlp
1480  * \param   arg
1481  * \param   evt
1482  * \return  uint32_t
1483  *
1484  * \b Description:
1485  *    The routine is envoked when the state of a device is unknown, like
1486  *    during a link down. We should remove the nodelist entry from the
1487  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1488  *    outstanding PRLI command, then free the node entry.
1489  */
1490 static uint32_t
1491 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1492                              struct lpfc_nodelist *ndlp,
1493                              void *arg,
1494                              uint32_t evt)
1495 {
1496         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1497         struct lpfc_hba  *phba = vport->phba;
1498
1499         /* Don't do anything that will mess up processing of the
1500          * previous RSCN.
1501          */
1502         if (vport->fc_flag & FC_RSCN_DEFERRED)
1503                 return ndlp->nlp_state;
1504
1505         /* software abort outstanding PRLI */
1506         lpfc_els_abort(phba, ndlp);
1507
1508         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1509         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1510         spin_lock_irq(shost->host_lock);
1511         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1512         spin_unlock_irq(shost->host_lock);
1513         lpfc_disc_set_adisc(vport, ndlp);
1514         return ndlp->nlp_state;
1515 }
1516
1517 static uint32_t
1518 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1519                           void *arg, uint32_t evt)
1520 {
1521         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1522
1523         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1524         return ndlp->nlp_state;
1525 }
1526
1527 static uint32_t
1528 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1529                          void *arg, uint32_t evt)
1530 {
1531         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1532
1533         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1534         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1535         return ndlp->nlp_state;
1536 }
1537
1538 static uint32_t
1539 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1540                          void *arg, uint32_t evt)
1541 {
1542         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1543
1544         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1545         return ndlp->nlp_state;
1546 }
1547
1548 static uint32_t
1549 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1550                            void *arg, uint32_t evt)
1551 {
1552         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1553
1554         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1555         return ndlp->nlp_state;
1556 }
1557
1558 static uint32_t
1559 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1560                          void *arg, uint32_t evt)
1561 {
1562         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1563
1564         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1565         return ndlp->nlp_state;
1566 }
1567
1568 static uint32_t
1569 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1570                              struct lpfc_nodelist *ndlp,
1571                              void *arg,
1572                              uint32_t evt)
1573 {
1574         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1575
1576         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1577         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1578         spin_lock_irq(shost->host_lock);
1579         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1580         spin_unlock_irq(shost->host_lock);
1581         lpfc_disc_set_adisc(vport, ndlp);
1582
1583         return ndlp->nlp_state;
1584 }
1585
1586 static uint32_t
1587 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1588                            void *arg, uint32_t evt)
1589 {
1590         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1591
1592         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1593         return ndlp->nlp_state;
1594 }
1595
1596 static uint32_t
1597 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1598                           void *arg, uint32_t evt)
1599 {
1600         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1601
1602         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1603         return ndlp->nlp_state;
1604 }
1605
1606 static uint32_t
1607 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1608                           void *arg, uint32_t evt)
1609 {
1610         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1611
1612         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1613         return ndlp->nlp_state;
1614 }
1615
1616 static uint32_t
1617 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1618                             struct lpfc_nodelist *ndlp,
1619                             void *arg, uint32_t evt)
1620 {
1621         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1622
1623         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1624         return ndlp->nlp_state;
1625 }
1626
1627 static uint32_t
1628 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1629                           void *arg, uint32_t evt)
1630 {
1631         struct lpfc_hba  *phba = vport->phba;
1632         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1633
1634         /* flush the target */
1635         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1636                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1637
1638         /* Treat like rcv logo */
1639         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1640         return ndlp->nlp_state;
1641 }
1642
1643 static uint32_t
1644 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1645                               struct lpfc_nodelist *ndlp,
1646                               void *arg,
1647                               uint32_t evt)
1648 {
1649         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1650
1651         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1652         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1653         spin_lock_irq(shost->host_lock);
1654         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1655         spin_unlock_irq(shost->host_lock);
1656         lpfc_disc_set_adisc(vport, ndlp);
1657         return ndlp->nlp_state;
1658 }
1659
1660 static uint32_t
1661 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1662                         void *arg, uint32_t evt)
1663 {
1664         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1665         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1666
1667         /* Ignore PLOGI if we have an outstanding LOGO */
1668         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1669                 return ndlp->nlp_state;
1670         }
1671
1672         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1673                 spin_lock_irq(shost->host_lock);
1674                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1675                 spin_unlock_irq(shost->host_lock);
1676                 return ndlp->nlp_state;
1677         }
1678
1679         /* send PLOGI immediately, move to PLOGI issue state */
1680         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1681                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1682                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1683                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1684         }
1685
1686         return ndlp->nlp_state;
1687 }
1688
1689 static uint32_t
1690 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1691                        void *arg, uint32_t evt)
1692 {
1693         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1694         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1695         struct ls_rjt     stat;
1696
1697         memset(&stat, 0, sizeof (struct ls_rjt));
1698         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1699         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1700         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1701
1702         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1703                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1704                         spin_lock_irq(shost->host_lock);
1705                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1706                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1707                         spin_unlock_irq(shost->host_lock);
1708                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1709                         lpfc_issue_els_adisc(vport, ndlp, 0);
1710                 } else {
1711                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1712                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1713                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1714                 }
1715         }
1716         return ndlp->nlp_state;
1717 }
1718
1719 static uint32_t
1720 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1721                        void *arg, uint32_t evt)
1722 {
1723         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1724
1725         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1726         return ndlp->nlp_state;
1727 }
1728
1729 static uint32_t
1730 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1731                          void *arg, uint32_t evt)
1732 {
1733         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1734
1735         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1736
1737         /*
1738          * Do not start discovery if discovery is about to start
1739          * or discovery in progress for this node. Starting discovery
1740          * here will affect the counting of discovery threads.
1741          */
1742         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1743             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1744                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1745                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1746                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1747                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1748                         lpfc_issue_els_adisc(vport, ndlp, 0);
1749                 } else {
1750                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1751                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1752                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1753                 }
1754         }
1755         return ndlp->nlp_state;
1756 }
1757
1758 static uint32_t
1759 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1760                        void *arg, uint32_t evt)
1761 {
1762         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1763         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1764
1765         spin_lock_irq(shost->host_lock);
1766         ndlp->nlp_flag |= NLP_LOGO_ACC;
1767         spin_unlock_irq(shost->host_lock);
1768
1769         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1770
1771         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1772                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1773                 spin_lock_irq(shost->host_lock);
1774                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1775                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1776                 spin_unlock_irq(shost->host_lock);
1777                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1778         } else {
1779                 spin_lock_irq(shost->host_lock);
1780                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1781                 spin_unlock_irq(shost->host_lock);
1782         }
1783         return ndlp->nlp_state;
1784 }
1785
1786 static uint32_t
1787 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1788                          void *arg, uint32_t evt)
1789 {
1790         struct lpfc_iocbq *cmdiocb, *rspiocb;
1791         IOCB_t *irsp;
1792
1793         cmdiocb = (struct lpfc_iocbq *) arg;
1794         rspiocb = cmdiocb->context_un.rsp_iocb;
1795
1796         irsp = &rspiocb->iocb;
1797         if (irsp->ulpStatus) {
1798                 lpfc_nlp_not_used(ndlp);
1799                 return NLP_STE_FREED_NODE;
1800         }
1801         return ndlp->nlp_state;
1802 }
1803
1804 static uint32_t
1805 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1806                         void *arg, uint32_t evt)
1807 {
1808         struct lpfc_iocbq *cmdiocb, *rspiocb;
1809         IOCB_t *irsp;
1810
1811         cmdiocb = (struct lpfc_iocbq *) arg;
1812         rspiocb = cmdiocb->context_un.rsp_iocb;
1813
1814         irsp = &rspiocb->iocb;
1815         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1816                 lpfc_drop_node(vport, ndlp);
1817                 return NLP_STE_FREED_NODE;
1818         }
1819         return ndlp->nlp_state;
1820 }
1821
1822 static uint32_t
1823 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1824                         void *arg, uint32_t evt)
1825 {
1826         lpfc_unreg_rpi(vport, ndlp);
1827         /* This routine does nothing, just return the current state */
1828         return ndlp->nlp_state;
1829 }
1830
1831 static uint32_t
1832 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1833                          void *arg, uint32_t evt)
1834 {
1835         struct lpfc_iocbq *cmdiocb, *rspiocb;
1836         IOCB_t *irsp;
1837
1838         cmdiocb = (struct lpfc_iocbq *) arg;
1839         rspiocb = cmdiocb->context_un.rsp_iocb;
1840
1841         irsp = &rspiocb->iocb;
1842         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1843                 lpfc_drop_node(vport, ndlp);
1844                 return NLP_STE_FREED_NODE;
1845         }
1846         return ndlp->nlp_state;
1847 }
1848
1849 static uint32_t
1850 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1851                             struct lpfc_nodelist *ndlp,
1852                             void *arg, uint32_t evt)
1853 {
1854         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1855         MAILBOX_t    *mb = &pmb->mb;
1856
1857         if (!mb->mbxStatus)
1858                 ndlp->nlp_rpi = mb->un.varWords[0];
1859         else {
1860                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1861                         lpfc_drop_node(vport, ndlp);
1862                         return NLP_STE_FREED_NODE;
1863                 }
1864         }
1865         return ndlp->nlp_state;
1866 }
1867
1868 static uint32_t
1869 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1870                         void *arg, uint32_t evt)
1871 {
1872         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1873
1874         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1875                 spin_lock_irq(shost->host_lock);
1876                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1877                 spin_unlock_irq(shost->host_lock);
1878                 return ndlp->nlp_state;
1879         }
1880         lpfc_drop_node(vport, ndlp);
1881         return NLP_STE_FREED_NODE;
1882 }
1883
1884 static uint32_t
1885 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1886                            void *arg, uint32_t evt)
1887 {
1888         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1889
1890         /* Don't do anything that will mess up processing of the
1891          * previous RSCN.
1892          */
1893         if (vport->fc_flag & FC_RSCN_DEFERRED)
1894                 return ndlp->nlp_state;
1895
1896         spin_lock_irq(shost->host_lock);
1897         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1898         spin_unlock_irq(shost->host_lock);
1899         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1900                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1901         }
1902         return ndlp->nlp_state;
1903 }
1904
1905
1906 /* This next section defines the NPort Discovery State Machine */
1907
1908 /* There are 4 different double linked lists nodelist entries can reside on.
1909  * The plogi list and adisc list are used when Link Up discovery or RSCN
1910  * processing is needed. Each list holds the nodes that we will send PLOGI
1911  * or ADISC on. These lists will keep track of what nodes will be effected
1912  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1913  * The unmapped_list will contain all nodes that we have successfully logged
1914  * into at the Fibre Channel level. The mapped_list will contain all nodes
1915  * that are mapped FCP targets.
1916  */
1917 /*
1918  * The bind list is a list of undiscovered (potentially non-existent) nodes
1919  * that we have saved binding information on. This information is used when
1920  * nodes transition from the unmapped to the mapped list.
1921  */
1922 /* For UNUSED_NODE state, the node has just been allocated .
1923  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1924  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1925  * and put on the unmapped list. For ADISC processing, the node is taken off
1926  * the ADISC list and placed on either the mapped or unmapped list (depending
1927  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1928  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1929  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1930  * node, the node is taken off the unmapped list. The binding list is checked
1931  * for a valid binding, or a binding is automatically assigned. If binding
1932  * assignment is unsuccessful, the node is left on the unmapped list. If
1933  * binding assignment is successful, the associated binding list entry (if
1934  * any) is removed, and the node is placed on the mapped list.
1935  */
1936 /*
1937  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1938  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1939  * expire, all effected nodes will receive a DEVICE_RM event.
1940  */
1941 /*
1942  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1943  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1944  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1945  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1946  * we will first process the ADISC list.  32 entries are processed initially and
1947  * ADISC is initited for each one.  Completions / Events for each node are
1948  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1949  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1950  * waiting, and the ADISC list count is identically 0, then we are done. For
1951  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1952  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1953  * list.  32 entries are processed initially and PLOGI is initited for each one.
1954  * Completions / Events for each node are funnelled thru the state machine.  As
1955  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1956  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1957  * indentically 0, then we are done. We have now completed discovery / RSCN
1958  * handling. Upon completion, ALL nodes should be on either the mapped or
1959  * unmapped lists.
1960  */
1961
1962 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1963      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1964         /* Action routine                  Event       Current State  */
1965         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1966         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1967         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1968         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1969         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1970         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1971         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1972         lpfc_disc_illegal,              /* CMPL_PRLI       */
1973         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1974         lpfc_disc_illegal,              /* CMPL_ADISC      */
1975         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1976         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1977         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1978
1979         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1980         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
1981         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1982         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1983         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1984         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1985         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1986         lpfc_disc_illegal,              /* CMPL_PRLI       */
1987         lpfc_disc_illegal,              /* CMPL_LOGO       */
1988         lpfc_disc_illegal,              /* CMPL_ADISC      */
1989         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1990         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1991         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1992
1993         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1994         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1995         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1996         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1997         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1998         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1999         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2000         lpfc_disc_illegal,              /* CMPL_PRLI       */
2001         lpfc_disc_illegal,              /* CMPL_LOGO       */
2002         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2003         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2004         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2005         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2006
2007         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2008         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2009         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2010         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2011         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2012         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2013         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2014         lpfc_disc_illegal,              /* CMPL_PRLI       */
2015         lpfc_disc_illegal,              /* CMPL_LOGO       */
2016         lpfc_disc_illegal,              /* CMPL_ADISC      */
2017         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2018         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2019         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2020
2021         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2022         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2023         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2024         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2025         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2026         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2027         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2028         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2029         lpfc_disc_illegal,              /* CMPL_LOGO       */
2030         lpfc_disc_illegal,              /* CMPL_ADISC      */
2031         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2032         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2033         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2034
2035         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2036         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2037         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2038         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2039         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2040         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2041         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2042         lpfc_disc_illegal,              /* CMPL_PRLI       */
2043         lpfc_disc_illegal,              /* CMPL_LOGO       */
2044         lpfc_disc_illegal,              /* CMPL_ADISC      */
2045         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2046         lpfc_disc_illegal,              /* DEVICE_RM       */
2047         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2048
2049         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2050         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2051         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2052         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2053         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2054         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2055         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2056         lpfc_disc_illegal,              /* CMPL_PRLI       */
2057         lpfc_disc_illegal,              /* CMPL_LOGO       */
2058         lpfc_disc_illegal,              /* CMPL_ADISC      */
2059         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2060         lpfc_disc_illegal,              /* DEVICE_RM       */
2061         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2062
2063         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2064         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2065         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2066         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2067         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2068         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2069         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2070         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2071         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2072         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2073         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2074         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2075         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2076 };
2077
2078 int
2079 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2080                         void *arg, uint32_t evt)
2081 {
2082         uint32_t cur_state, rc;
2083         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2084                          uint32_t);
2085
2086         lpfc_nlp_get(ndlp);
2087         cur_state = ndlp->nlp_state;
2088
2089         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2090         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2091                          "0211 DSM in event x%x on NPort x%x in "
2092                          "state %d Data: x%x\n",
2093                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2094
2095         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2096                  "DSM in:          evt:%d ste:%d did:x%x",
2097                 evt, cur_state, ndlp->nlp_DID);
2098
2099         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2100         rc = (func) (vport, ndlp, arg, evt);
2101
2102         /* DSM out state <rc> on NPort <nlp_DID> */
2103         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2104                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2105                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2106
2107         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2108                  "DSM out:         ste:%d did:x%x flg:x%x",
2109                 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2110
2111         lpfc_nlp_put(ndlp);
2112
2113         return rc;
2114 }