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_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
 347                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 348                 if (rc == MBX_NOT_FINISHED) {
 349                         mempool_free(mbox, phba->mbox_mem_pool);
 350                         goto out;
 351                 }
 352
 353                 lpfc_can_disctmo(vport);
 354         }
 355         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 356         if (!mbox)
 357                 goto out;
 358
 359         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 360                             (uint8_t *) sp, mbox, 0);
 361         if (rc) {
 362                 mempool_free(mbox, phba->mbox_mem_pool);
 363                 goto out;
 364         }
 365
 366         /* ACC PLOGI rsp command needs to execute first,
 367          * queue this mbox command to be processed later.
 368          */
 369         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 370         /*
 371          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 372          * command issued in lpfc_cmpl_els_acc().
 373          */
 374         mbox->vport = vport;
 375         spin_lock_irq(shost->host_lock);
 376         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 377         spin_unlock_irq(shost->host_lock);
 378
 379         /*
 380          * If there is an outstanding PLOGI issued, abort it before
 381          * sending ACC rsp for received PLOGI. If pending plogi
 382          * is not canceled here, the plogi will be rejected by
 383          * remote port and will be retried. On a configuration with
 384          * single discovery thread, this will cause a huge delay in
 385          * discovery. Also this will cause multiple state machines
 386          * running in parallel for this node.
 387          */
 388         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 389                 /* software abort outstanding PLOGI */
 390                 lpfc_els_abort(phba, ndlp);
 391         }
 392
 393         if ((vport->port_type == LPFC_NPIV_PORT &&
 394              vport->cfg_restrict_login)) {
 395
 396                 /* In order to preserve RPIs, we want to cleanup
 397                  * the default RPI the firmware created to rcv
 398                  * this ELS request. The only way to do this is
 399                  * to register, then unregister the RPI.
 400                  */
 401                 spin_lock_irq(shost->host_lock);
 402                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 403                 spin_unlock_irq(shost->host_lock);
 404                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 405                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 406                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 407                         ndlp, mbox);
 408                 return 1;
 409         }
 410         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 411         return 1;
 412
 413 out:
 414         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 415         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 416         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 417         return 0;
 418 }
 419
 420 static int
 421 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 422                 struct lpfc_iocbq *cmdiocb)
 423 {
 424         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 425         struct lpfc_dmabuf *pcmd;
 426         struct serv_parm   *sp;
 427         struct lpfc_name   *pnn, *ppn;
 428         struct ls_rjt stat;
 429         ADISC *ap;
 430         IOCB_t *icmd;
 431         uint32_t *lp;
 432         uint32_t cmd;
 433
 434         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 435         lp = (uint32_t *) pcmd->virt;
 436
 437         cmd = *lp++;
 438         if (cmd == ELS_CMD_ADISC) {
 439                 ap = (ADISC *) lp;
 440                 pnn = (struct lpfc_name *) & ap->nodeName;
 441                 ppn = (struct lpfc_name *) & ap->portName;
 442         } else {
 443                 sp = (struct serv_parm *) lp;
 444                 pnn = (struct lpfc_name *) & sp->nodeName;
 445                 ppn = (struct lpfc_name *) & sp->portName;
 446         }
 447
 448         icmd = &cmdiocb->iocb;
 449         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 450                 if (cmd == ELS_CMD_ADISC) {
 451                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 452                 } else {
 453                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 454                                          NULL);
 455                 }
 456                 return 1;
 457         }
 458         /* Reject this request because invalid parameters */
 459         stat.un.b.lsRjtRsvd0 = 0;
 460         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 461         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 462         stat.un.b.vendorUnique = 0;
 463         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 464
 465         /* 1 sec timeout */
 466         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 467
 468         spin_lock_irq(shost->host_lock);
 469         ndlp->nlp_flag |= NLP_DELAY_TMO;
 470         spin_unlock_irq(shost->host_lock);
 471         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 472         ndlp->nlp_prev_state = ndlp->nlp_state;
 473         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 474         return 0;
 475 }
 476
 477 static int
 478 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 479               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 480 {
 481         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 482
 483         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 484         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 485          * PLOGIs during LOGO storms from a device.
 486          */
 487         spin_lock_irq(shost->host_lock);
 488         ndlp->nlp_flag |= NLP_LOGO_ACC;
 489         spin_unlock_irq(shost->host_lock);
 490         if (els_cmd == ELS_CMD_PRLO)
 491                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 492         else
 493                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 494
 495         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 496             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 497                 /* Only try to re-login if this is NOT a Fabric Node */
 498                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 499                 spin_lock_irq(shost->host_lock);
 500                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 501                 spin_unlock_irq(shost->host_lock);
 502
 503                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 504                 ndlp->nlp_prev_state = ndlp->nlp_state;
 505                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 506         } else {
 507                 ndlp->nlp_prev_state = ndlp->nlp_state;
 508                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 509         }
 510
 511         spin_lock_irq(shost->host_lock);
 512         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 513         spin_unlock_irq(shost->host_lock);
 514         /* The driver has to wait until the ACC completes before it continues
 515          * processing the LOGO.  The action will resume in
 516          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 517          * unreg_login, the driver waits so the ACC does not get aborted.
 518          */
 519         return 0;
 520 }
 521
 522 static void
 523 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 524               struct lpfc_iocbq *cmdiocb)
 525 {
 526         struct lpfc_dmabuf *pcmd;
 527         uint32_t *lp;
 528         PRLI *npr;
 529         struct fc_rport *rport = ndlp->rport;
 530         u32 roles;
 531
 532         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 533         lp = (uint32_t *) pcmd->virt;
 534         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 535
 536         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 537         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 538         if (npr->prliType == PRLI_FCP_TYPE) {
 539                 if (npr->initiatorFunc)
 540                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 541                 if (npr->targetFunc)
 542                         ndlp->nlp_type |= NLP_FCP_TARGET;
 543                 if (npr->Retry)
 544                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 545         }
 546         if (rport) {
 547                 /* We need to update the rport role values */
 548                 roles = FC_RPORT_ROLE_UNKNOWN;
 549                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 550                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 551                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 552                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 553
 554                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 555                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 556                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 557
 558                 fc_remote_port_rolechg(rport, roles);
 559         }
 560 }
 561
 562 static uint32_t
 563 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 564 {
 565         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 566
 567         if (!ndlp->nlp_rpi) {
 568                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 569                 return 0;
 570         }
 571
 572         /* Check config parameter use-adisc or FCP-2 */
 573         if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 574             ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 575                 spin_lock_irq(shost->host_lock);
 576                 ndlp->nlp_flag |= NLP_NPR_ADISC;
 577                 spin_unlock_irq(shost->host_lock);
 578                 return 1;
 579         }
 580         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 581         lpfc_unreg_rpi(vport, ndlp);
 582         return 0;
 583 }
 584
 585 static uint32_t
 586 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 587                   void *arg, uint32_t evt)
 588 {
 589         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 590                          "0253 Illegal State Transition: node x%x "
 591                          "event x%x, state x%x Data: x%x x%x\n",
 592                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 593                          ndlp->nlp_flag);
 594         return ndlp->nlp_state;
 595 }
 596
 597 /* Start of Discovery State Machine routines */
 598
 599 static uint32_t
 600 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 601                            void *arg, uint32_t evt)
 602 {
 603         struct lpfc_iocbq *cmdiocb;
 604
 605         cmdiocb = (struct lpfc_iocbq *) arg;
 606
 607         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 608                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 609                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 610                 return ndlp->nlp_state;
 611         }
 612         lpfc_drop_node(vport, ndlp);
 613         return NLP_STE_FREED_NODE;
 614 }
 615
 616 static uint32_t
 617 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 618                          void *arg, uint32_t evt)
 619 {
 620         lpfc_issue_els_logo(vport, ndlp, 0);
 621         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 622         return ndlp->nlp_state;
 623 }
 624
 625 static uint32_t
 626 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 627                           void *arg, uint32_t evt)
 628 {
 629         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 630         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 631
 632         spin_lock_irq(shost->host_lock);
 633         ndlp->nlp_flag |= NLP_LOGO_ACC;
 634         spin_unlock_irq(shost->host_lock);
 635         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 636         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 637
 638         return ndlp->nlp_state;
 639 }
 640
 641 static uint32_t
 642 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 643                            void *arg, uint32_t evt)
 644 {
 645         lpfc_drop_node(vport, ndlp);
 646         return NLP_STE_FREED_NODE;
 647 }
 648
 649 static uint32_t
 650 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 651                            void *arg, uint32_t evt)
 652 {
 653         lpfc_drop_node(vport, ndlp);
 654         return NLP_STE_FREED_NODE;
 655 }
 656
 657 static uint32_t
 658 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 659                            void *arg, uint32_t evt)
 660 {
 661         struct lpfc_hba   *phba = vport->phba;
 662         struct lpfc_iocbq *cmdiocb = arg;
 663         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 664         uint32_t *lp = (uint32_t *) pcmd->virt;
 665         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 666         struct ls_rjt stat;
 667         int port_cmp;
 668
 669         memset(&stat, 0, sizeof (struct ls_rjt));
 670
 671         /* For a PLOGI, we only accept if our portname is less
 672          * than the remote portname.
 673          */
 674         phba->fc_stat.elsLogiCol++;
 675         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 676                           sizeof(struct lpfc_name));
 677
 678         if (port_cmp >= 0) {
 679                 /* Reject this request because the remote node will accept
 680                    ours */
 681                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 682                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 683                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 684                         NULL);
 685         } else {
 686                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
 687         } /* If our portname was less */
 688
 689         return ndlp->nlp_state;
 690 }
 691
 692 static uint32_t
 693 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 694                           void *arg, uint32_t evt)
 695 {
 696         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 697         struct ls_rjt     stat;
 698
 699         memset(&stat, 0, sizeof (struct ls_rjt));
 700         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 701         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 702         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 703         return ndlp->nlp_state;
 704 }
 705
 706 static uint32_t
 707 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 708                           void *arg, uint32_t evt)
 709 {
 710         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 711
 712                                 /* software abort outstanding PLOGI */
 713         lpfc_els_abort(vport->phba, ndlp);
 714
 715         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 716         return ndlp->nlp_state;
 717 }
 718
 719 static uint32_t
 720 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 721                          void *arg, uint32_t evt)
 722 {
 723         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 724         struct lpfc_hba   *phba = vport->phba;
 725         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 726
 727         /* software abort outstanding PLOGI */
 728         lpfc_els_abort(phba, ndlp);
 729
 730         if (evt == NLP_EVT_RCV_LOGO) {
 731                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 732         } else {
 733                 lpfc_issue_els_logo(vport, ndlp, 0);
 734         }
 735
 736         /* Put ndlp in npr state set plogi timer for 1 sec */
 737         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 738         spin_lock_irq(shost->host_lock);
 739         ndlp->nlp_flag |= NLP_DELAY_TMO;
 740         spin_unlock_irq(shost->host_lock);
 741         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 742         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 743         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 744
 745         return ndlp->nlp_state;
 746 }
 747
 748 static uint32_t
 749 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 750                             struct lpfc_nodelist *ndlp,
 751                             void *arg,
 752                             uint32_t evt)
 753 {
 754         struct lpfc_hba    *phba = vport->phba;
 755         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 756         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 757         uint32_t *lp;
 758         IOCB_t *irsp;
 759         struct serv_parm *sp;
 760         LPFC_MBOXQ_t *mbox;
 761
 762         cmdiocb = (struct lpfc_iocbq *) arg;
 763         rspiocb = cmdiocb->context_un.rsp_iocb;
 764
 765         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 766                 /* Recovery from PLOGI collision logic */
 767                 return ndlp->nlp_state;
 768         }
 769
 770         irsp = &rspiocb->iocb;
 771
 772         if (irsp->ulpStatus)
 773                 goto out;
 774
 775         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 776
 777         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 778
 779         lp = (uint32_t *) prsp->virt;
 780         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 781         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 782                 goto out;
 783         /* PLOGI chkparm OK */
 784         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 785                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 786                          ndlp->nlp_DID, ndlp->nlp_state,
 787                          ndlp->nlp_flag, ndlp->nlp_rpi);
 788         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 789                 ndlp->nlp_fcp_info |= CLASS2;
 790         else
 791                 ndlp->nlp_fcp_info |= CLASS3;
 792
 793         ndlp->nlp_class_sup = 0;
 794         if (sp->cls1.classValid)
 795                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 796         if (sp->cls2.classValid)
 797                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 798         if (sp->cls3.classValid)
 799                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 800         if (sp->cls4.classValid)
 801                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 802         ndlp->nlp_maxframe =
 803                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 804
 805         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 806         if (!mbox) {
 807                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 808                         "0133 PLOGI: no memory for reg_login "
 809                         "Data: x%x x%x x%x x%x\n",
 810                         ndlp->nlp_DID, ndlp->nlp_state,
 811                         ndlp->nlp_flag, ndlp->nlp_rpi);
 812                 goto out;
 813         }
 814
 815         lpfc_unreg_rpi(vport, ndlp);
 816
 817         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 818                            (uint8_t *) sp, mbox, 0) == 0) {
 819                 switch (ndlp->nlp_DID) {
 820                 case NameServer_DID:
 821                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 822                         break;
 823                 case FDMI_DID:
 824                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 825                         break;
 826                 default:
 827                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 828                 }
 829                 mbox->context2 = lpfc_nlp_get(ndlp);
 830                 mbox->vport = vport;
 831                 if (lpfc_sli_issue_mbox(phba, mbox,
 832                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 833                     != MBX_NOT_FINISHED) {
 834                         lpfc_nlp_set_state(vport, ndlp,
 835                                            NLP_STE_REG_LOGIN_ISSUE);
 836                         return ndlp->nlp_state;
 837                 }
 838                 lpfc_nlp_put(ndlp);
 839                 mp = (struct lpfc_dmabuf *) mbox->context1;
 840                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 841                 kfree(mp);
 842                 mempool_free(mbox, phba->mbox_mem_pool);
 843
 844                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 845                                  "0134 PLOGI: cannot issue reg_login "
 846                                  "Data: x%x x%x x%x x%x\n",
 847                                  ndlp->nlp_DID, ndlp->nlp_state,
 848                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 849         } else {
 850                 mempool_free(mbox, phba->mbox_mem_pool);
 851
 852                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 853                                  "0135 PLOGI: cannot format reg_login "
 854                                  "Data: x%x x%x x%x x%x\n",
 855                                  ndlp->nlp_DID, ndlp->nlp_state,
 856                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 857         }
 858
 859
 860 out:
 861         if (ndlp->nlp_DID == NameServer_DID) {
 862                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 863                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 864                                  "0261 Cannot Register NameServer login\n");
 865         }
 866
 867         /* Free this node since the driver cannot login or has the wrong
 868            sparm */
 869         lpfc_drop_node(vport, ndlp);
 870         return NLP_STE_FREED_NODE;
 871 }
 872
 873 static uint32_t
 874 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 875                            void *arg, uint32_t evt)
 876 {
 877         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 878
 879         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 880                 spin_lock_irq(shost->host_lock);
 881                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 882                 spin_unlock_irq(shost->host_lock);
 883                 return ndlp->nlp_state;
 884         } else {
 885                 /* software abort outstanding PLOGI */
 886                 lpfc_els_abort(vport->phba, ndlp);
 887
 888                 lpfc_drop_node(vport, ndlp);
 889                 return NLP_STE_FREED_NODE;
 890         }
 891 }
 892
 893 static uint32_t
 894 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
 895                               struct lpfc_nodelist *ndlp,
 896                               void *arg,
 897                               uint32_t evt)
 898 {
 899         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 900         struct lpfc_hba  *phba = vport->phba;
 901
 902         /* Don't do anything that will mess up processing of the
 903          * previous RSCN.
 904          */
 905         if (vport->fc_flag & FC_RSCN_DEFERRED)
 906                 return ndlp->nlp_state;
 907
 908         /* software abort outstanding PLOGI */
 909         lpfc_els_abort(phba, ndlp);
 910
 911         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 912         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 913         spin_lock_irq(shost->host_lock);
 914         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 915         spin_unlock_irq(shost->host_lock);
 916
 917         return ndlp->nlp_state;
 918 }
 919
 920 static uint32_t
 921 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 922                            void *arg, uint32_t evt)
 923 {
 924         struct lpfc_hba   *phba = vport->phba;
 925         struct lpfc_iocbq *cmdiocb;
 926
 927         /* software abort outstanding ADISC */
 928         lpfc_els_abort(phba, ndlp);
 929
 930         cmdiocb = (struct lpfc_iocbq *) arg;
 931
 932         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
 933                 return ndlp->nlp_state;
 934
 935         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 936         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
 937         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
 938
 939         return ndlp->nlp_state;
 940 }
 941
 942 static uint32_t
 943 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 944                           void *arg, uint32_t evt)
 945 {
 946         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 947
 948         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
 949         return ndlp->nlp_state;
 950 }
 951
 952 static uint32_t
 953 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 954                           void *arg, uint32_t evt)
 955 {
 956         struct lpfc_hba *phba = vport->phba;
 957         struct lpfc_iocbq *cmdiocb;
 958
 959         cmdiocb = (struct lpfc_iocbq *) arg;
 960
 961         /* software abort outstanding ADISC */
 962         lpfc_els_abort(phba, ndlp);
 963
 964         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 965         return ndlp->nlp_state;
 966 }
 967
 968 static uint32_t
 969 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
 970                             struct lpfc_nodelist *ndlp,
 971                             void *arg, uint32_t evt)
 972 {
 973         struct lpfc_iocbq *cmdiocb;
 974
 975         cmdiocb = (struct lpfc_iocbq *) arg;
 976
 977         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
 978         return ndlp->nlp_state;
 979 }
 980
 981 static uint32_t
 982 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 983                           void *arg, uint32_t evt)
 984 {
 985         struct lpfc_iocbq *cmdiocb;
 986
 987         cmdiocb = (struct lpfc_iocbq *) arg;
 988
 989         /* Treat like rcv logo */
 990         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
 991         return ndlp->nlp_state;
 992 }
 993
 994 static uint32_t
 995 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
 996                             struct lpfc_nodelist *ndlp,
 997                             void *arg, uint32_t evt)
 998 {
 999         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1000         struct lpfc_hba   *phba = vport->phba;
1001         struct lpfc_iocbq *cmdiocb, *rspiocb;
1002         IOCB_t *irsp;
1003         ADISC *ap;
1004
1005         cmdiocb = (struct lpfc_iocbq *) arg;
1006         rspiocb = cmdiocb->context_un.rsp_iocb;
1007
1008         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1009         irsp = &rspiocb->iocb;
1010
1011         if ((irsp->ulpStatus) ||
1012             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1013                 /* 1 sec timeout */
1014                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1015                 spin_lock_irq(shost->host_lock);
1016                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1017                 spin_unlock_irq(shost->host_lock);
1018                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1019
1020                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1021                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1022
1023                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1024                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1025                 lpfc_unreg_rpi(vport, ndlp);
1026                 return ndlp->nlp_state;
1027         }
1028
1029         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1030                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1031                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1032         } else {
1033                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1034                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1035         }
1036         return ndlp->nlp_state;
1037 }
1038
1039 static uint32_t
1040 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1041                            void *arg, uint32_t evt)
1042 {
1043         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1044
1045         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1046                 spin_lock_irq(shost->host_lock);
1047                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1048                 spin_unlock_irq(shost->host_lock);
1049                 return ndlp->nlp_state;
1050         } else {
1051                 /* software abort outstanding ADISC */
1052                 lpfc_els_abort(vport->phba, ndlp);
1053
1054                 lpfc_drop_node(vport, ndlp);
1055                 return NLP_STE_FREED_NODE;
1056         }
1057 }
1058
1059 static uint32_t
1060 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1061                               struct lpfc_nodelist *ndlp,
1062                               void *arg,
1063                               uint32_t evt)
1064 {
1065         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1066         struct lpfc_hba  *phba = vport->phba;
1067
1068         /* Don't do anything that will mess up processing of the
1069          * previous RSCN.
1070          */
1071         if (vport->fc_flag & FC_RSCN_DEFERRED)
1072                 return ndlp->nlp_state;
1073
1074         /* software abort outstanding ADISC */
1075         lpfc_els_abort(phba, ndlp);
1076
1077         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1078         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1079         spin_lock_irq(shost->host_lock);
1080         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1081         spin_unlock_irq(shost->host_lock);
1082         lpfc_disc_set_adisc(vport, ndlp);
1083         return ndlp->nlp_state;
1084 }
1085
1086 static uint32_t
1087 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1088                               struct lpfc_nodelist *ndlp,
1089                               void *arg,
1090                               uint32_t evt)
1091 {
1092         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1093
1094         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1095         return ndlp->nlp_state;
1096 }
1097
1098 static uint32_t
1099 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1100                              struct lpfc_nodelist *ndlp,
1101                              void *arg,
1102                              uint32_t evt)
1103 {
1104         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1105
1106         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1107         return ndlp->nlp_state;
1108 }
1109
1110 static uint32_t
1111 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1112                              struct lpfc_nodelist *ndlp,
1113                              void *arg,
1114                              uint32_t evt)
1115 {
1116         struct lpfc_hba   *phba = vport->phba;
1117         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1118         LPFC_MBOXQ_t      *mb;
1119         LPFC_MBOXQ_t      *nextmb;
1120         struct lpfc_dmabuf *mp;
1121
1122         cmdiocb = (struct lpfc_iocbq *) arg;
1123
1124         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1125         if ((mb = phba->sli.mbox_active)) {
1126                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1127                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1128                         lpfc_nlp_put(ndlp);
1129                         mb->context2 = NULL;
1130                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1131                 }
1132         }
1133
1134         spin_lock_irq(&phba->hbalock);
1135         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1136                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1137                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1138                         mp = (struct lpfc_dmabuf *) (mb->context1);
1139                         if (mp) {
1140                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1141                                 kfree(mp);
1142                         }
1143                         lpfc_nlp_put(ndlp);
1144                         list_del(&mb->list);
1145                         mempool_free(mb, phba->mbox_mem_pool);
1146                 }
1147         }
1148         spin_unlock_irq(&phba->hbalock);
1149
1150         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1151         return ndlp->nlp_state;
1152 }
1153
1154 static uint32_t
1155 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1156                                struct lpfc_nodelist *ndlp,
1157                                void *arg,
1158                                uint32_t evt)
1159 {
1160         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1161
1162         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1163         return ndlp->nlp_state;
1164 }
1165
1166 static uint32_t
1167 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1168                              struct lpfc_nodelist *ndlp,
1169                              void *arg,
1170                              uint32_t evt)
1171 {
1172         struct lpfc_iocbq *cmdiocb;
1173
1174         cmdiocb = (struct lpfc_iocbq *) arg;
1175         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1176         return ndlp->nlp_state;
1177 }
1178
1179 static uint32_t
1180 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1181                                   struct lpfc_nodelist *ndlp,
1182                                   void *arg,
1183                                   uint32_t evt)
1184 {
1185         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1186         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1187         MAILBOX_t *mb = &pmb->mb;
1188         uint32_t did  = mb->un.varWords[1];
1189
1190         if (mb->mbxStatus) {
1191                 /* RegLogin failed */
1192                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1193                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1194                                 did, mb->mbxStatus, vport->port_state);
1195                 /*
1196                  * If RegLogin failed due to lack of HBA resources do not
1197                  * retry discovery.
1198                  */
1199                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1200                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1201                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1202                         return ndlp->nlp_state;
1203                 }
1204
1205                 /* Put ndlp in npr state set plogi timer for 1 sec */
1206                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1207                 spin_lock_irq(shost->host_lock);
1208                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1209                 spin_unlock_irq(shost->host_lock);
1210                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1211
1212                 lpfc_issue_els_logo(vport, ndlp, 0);
1213                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1214                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1215                 return ndlp->nlp_state;
1216         }
1217
1218         ndlp->nlp_rpi = mb->un.varWords[0];
1219
1220         /* Only if we are not a fabric nport do we issue PRLI */
1221         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1222                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1223                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1224                 lpfc_issue_els_prli(vport, ndlp, 0);
1225         } else {
1226                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1227                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1228         }
1229         return ndlp->nlp_state;
1230 }
1231
1232 static uint32_t
1233 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1234                               struct lpfc_nodelist *ndlp,
1235                               void *arg,
1236                               uint32_t evt)
1237 {
1238         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1239
1240         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1241                 spin_lock_irq(shost->host_lock);
1242                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1243                 spin_unlock_irq(shost->host_lock);
1244                 return ndlp->nlp_state;
1245         } else {
1246                 lpfc_drop_node(vport, ndlp);
1247                 return NLP_STE_FREED_NODE;
1248         }
1249 }
1250
1251 static uint32_t
1252 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1253                                  struct lpfc_nodelist *ndlp,
1254                                  void *arg,
1255                                  uint32_t evt)
1256 {
1257         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1258
1259         /* Don't do anything that will mess up processing of the
1260          * previous RSCN.
1261          */
1262         if (vport->fc_flag & FC_RSCN_DEFERRED)
1263                 return ndlp->nlp_state;
1264
1265         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1266         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1267         spin_lock_irq(shost->host_lock);
1268         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1269         spin_unlock_irq(shost->host_lock);
1270         lpfc_disc_set_adisc(vport, ndlp);
1271         return ndlp->nlp_state;
1272 }
1273
1274 static uint32_t
1275 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1276                           void *arg, uint32_t evt)
1277 {
1278         struct lpfc_iocbq *cmdiocb;
1279
1280         cmdiocb = (struct lpfc_iocbq *) arg;
1281
1282         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1283         return ndlp->nlp_state;
1284 }
1285
1286 static uint32_t
1287 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1288                          void *arg, uint32_t evt)
1289 {
1290         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1291
1292         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1293         return ndlp->nlp_state;
1294 }
1295
1296 static uint32_t
1297 lpfc_rcv_logo_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         /* Software abort outstanding PRLI before sending acc */
1303         lpfc_els_abort(vport->phba, ndlp);
1304
1305         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1306         return ndlp->nlp_state;
1307 }
1308
1309 static uint32_t
1310 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1311                            void *arg, uint32_t evt)
1312 {
1313         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1314
1315         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1316         return ndlp->nlp_state;
1317 }
1318
1319 /* This routine is envoked when we rcv a PRLO request from a nport
1320  * we are logged into.  We should send back a PRLO rsp setting the
1321  * appropriate bits.
1322  * NEXT STATE = PRLI_ISSUE
1323  */
1324 static uint32_t
1325 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1326                          void *arg, uint32_t evt)
1327 {
1328         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1329
1330         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1331         return ndlp->nlp_state;
1332 }
1333
1334 static uint32_t
1335 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1336                           void *arg, uint32_t evt)
1337 {
1338         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1339         struct lpfc_iocbq *cmdiocb, *rspiocb;
1340         struct lpfc_hba   *phba = vport->phba;
1341         IOCB_t *irsp;
1342         PRLI *npr;
1343
1344         cmdiocb = (struct lpfc_iocbq *) arg;
1345         rspiocb = cmdiocb->context_un.rsp_iocb;
1346         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1347
1348         irsp = &rspiocb->iocb;
1349         if (irsp->ulpStatus) {
1350                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1351                     vport->cfg_restrict_login) {
1352                         goto out;
1353                 }
1354                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1355                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1356                 return ndlp->nlp_state;
1357         }
1358
1359         /* Check out PRLI rsp */
1360         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1361         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1362         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1363             (npr->prliType == PRLI_FCP_TYPE)) {
1364                 if (npr->initiatorFunc)
1365                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1366                 if (npr->targetFunc)
1367                         ndlp->nlp_type |= NLP_FCP_TARGET;
1368                 if (npr->Retry)
1369                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1370         }
1371         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1372             (vport->port_type == LPFC_NPIV_PORT) &&
1373              vport->cfg_restrict_login) {
1374 out:
1375                 spin_lock_irq(shost->host_lock);
1376                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1377                 spin_unlock_irq(shost->host_lock);
1378                 lpfc_issue_els_logo(vport, ndlp, 0);
1379
1380                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1381                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1382                 return ndlp->nlp_state;
1383         }
1384
1385         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1386         if (ndlp->nlp_type & NLP_FCP_TARGET)
1387                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1388         else
1389                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1390         return ndlp->nlp_state;
1391 }
1392
1393 /*! lpfc_device_rm_prli_issue
1394  *
1395  * \pre
1396  * \post
1397  * \param   phba
1398  * \param   ndlp
1399  * \param   arg
1400  * \param   evt
1401  * \return  uint32_t
1402  *
1403  * \b Description:
1404  *    This routine is envoked when we a request to remove a nport we are in the
1405  *    process of PRLIing. We should software abort outstanding prli, unreg
1406  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1407  *    on plogi list so it can be freed when LOGO completes.
1408  *
1409  */
1410
1411 static uint32_t
1412 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1413                           void *arg, uint32_t evt)
1414 {
1415         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1416
1417         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1418                 spin_lock_irq(shost->host_lock);
1419                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1420                 spin_unlock_irq(shost->host_lock);
1421                 return ndlp->nlp_state;
1422         } else {
1423                 /* software abort outstanding PLOGI */
1424                 lpfc_els_abort(vport->phba, ndlp);
1425
1426                 lpfc_drop_node(vport, ndlp);
1427                 return NLP_STE_FREED_NODE;
1428         }
1429 }
1430
1431
1432 /*! lpfc_device_recov_prli_issue
1433  *
1434  * \pre
1435  * \post
1436  * \param   phba
1437  * \param   ndlp
1438  * \param   arg
1439  * \param   evt
1440  * \return  uint32_t
1441  *
1442  * \b Description:
1443  *    The routine is envoked when the state of a device is unknown, like
1444  *    during a link down. We should remove the nodelist entry from the
1445  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1446  *    outstanding PRLI command, then free the node entry.
1447  */
1448 static uint32_t
1449 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1450                              struct lpfc_nodelist *ndlp,
1451                              void *arg,
1452                              uint32_t evt)
1453 {
1454         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1455         struct lpfc_hba  *phba = vport->phba;
1456
1457         /* Don't do anything that will mess up processing of the
1458          * previous RSCN.
1459          */
1460         if (vport->fc_flag & FC_RSCN_DEFERRED)
1461                 return ndlp->nlp_state;
1462
1463         /* software abort outstanding PRLI */
1464         lpfc_els_abort(phba, ndlp);
1465
1466         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1467         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1468         spin_lock_irq(shost->host_lock);
1469         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1470         spin_unlock_irq(shost->host_lock);
1471         lpfc_disc_set_adisc(vport, ndlp);
1472         return ndlp->nlp_state;
1473 }
1474
1475 static uint32_t
1476 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1477                           void *arg, uint32_t evt)
1478 {
1479         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1480
1481         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1482         return ndlp->nlp_state;
1483 }
1484
1485 static uint32_t
1486 lpfc_rcv_prli_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_prli(vport, ndlp, cmdiocb);
1492         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1493         return ndlp->nlp_state;
1494 }
1495
1496 static uint32_t
1497 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1498                          void *arg, uint32_t evt)
1499 {
1500         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1501
1502         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1503         return ndlp->nlp_state;
1504 }
1505
1506 static uint32_t
1507 lpfc_rcv_padisc_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_padisc(vport, ndlp, cmdiocb);
1513         return ndlp->nlp_state;
1514 }
1515
1516 static uint32_t
1517 lpfc_rcv_prlo_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_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1523         return ndlp->nlp_state;
1524 }
1525
1526 static uint32_t
1527 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1528                              struct lpfc_nodelist *ndlp,
1529                              void *arg,
1530                              uint32_t evt)
1531 {
1532         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1533
1534         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1535         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1536         spin_lock_irq(shost->host_lock);
1537         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1538         spin_unlock_irq(shost->host_lock);
1539         lpfc_disc_set_adisc(vport, ndlp);
1540
1541         return ndlp->nlp_state;
1542 }
1543
1544 static uint32_t
1545 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1546                            void *arg, uint32_t evt)
1547 {
1548         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1549
1550         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1551         return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_rcv_prli_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_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1561         return ndlp->nlp_state;
1562 }
1563
1564 static uint32_t
1565 lpfc_rcv_logo_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_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1571         return ndlp->nlp_state;
1572 }
1573
1574 static uint32_t
1575 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1576                             struct lpfc_nodelist *ndlp,
1577                             void *arg, uint32_t evt)
1578 {
1579         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1580
1581         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1582         return ndlp->nlp_state;
1583 }
1584
1585 static uint32_t
1586 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1587                           void *arg, uint32_t evt)
1588 {
1589         struct lpfc_hba  *phba = vport->phba;
1590         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1591
1592         /* flush the target */
1593         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1594                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1595
1596         /* Treat like rcv logo */
1597         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1598         return ndlp->nlp_state;
1599 }
1600
1601 static uint32_t
1602 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1603                               struct lpfc_nodelist *ndlp,
1604                               void *arg,
1605                               uint32_t evt)
1606 {
1607         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1608
1609         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1610         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1611         spin_lock_irq(shost->host_lock);
1612         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1613         spin_unlock_irq(shost->host_lock);
1614         lpfc_disc_set_adisc(vport, ndlp);
1615         return ndlp->nlp_state;
1616 }
1617
1618 static uint32_t
1619 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1620                         void *arg, uint32_t evt)
1621 {
1622         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1623         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1624
1625         /* Ignore PLOGI if we have an outstanding LOGO */
1626         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1627                 return ndlp->nlp_state;
1628         }
1629
1630         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1631                 spin_lock_irq(shost->host_lock);
1632                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1633                 spin_unlock_irq(shost->host_lock);
1634                 return ndlp->nlp_state;
1635         }
1636
1637         /* send PLOGI immediately, move to PLOGI issue state */
1638         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1639                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1640                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1641                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1642         }
1643
1644         return ndlp->nlp_state;
1645 }
1646
1647 static uint32_t
1648 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1649                        void *arg, uint32_t evt)
1650 {
1651         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1652         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1653         struct ls_rjt     stat;
1654
1655         memset(&stat, 0, sizeof (struct ls_rjt));
1656         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1657         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1658         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1659
1660         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1661                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1662                         spin_lock_irq(shost->host_lock);
1663                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1664                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1665                         spin_unlock_irq(shost->host_lock);
1666                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1667                         lpfc_issue_els_adisc(vport, ndlp, 0);
1668                 } else {
1669                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1670                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1671                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1672                 }
1673         }
1674         return ndlp->nlp_state;
1675 }
1676
1677 static uint32_t
1678 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1679                        void *arg, uint32_t evt)
1680 {
1681         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1682
1683         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1684         return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_padisc_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_padisc(vport, ndlp, cmdiocb);
1694
1695         /*
1696          * Do not start discovery if discovery is about to start
1697          * or discovery in progress for this node. Starting discovery
1698          * here will affect the counting of discovery threads.
1699          */
1700         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1701             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1702                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1703                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1704                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1705                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1706                         lpfc_issue_els_adisc(vport, ndlp, 0);
1707                 } else {
1708                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1709                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1710                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1711                 }
1712         }
1713         return ndlp->nlp_state;
1714 }
1715
1716 static uint32_t
1717 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1718                        void *arg, uint32_t evt)
1719 {
1720         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1721         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1722
1723         spin_lock_irq(shost->host_lock);
1724         ndlp->nlp_flag |= NLP_LOGO_ACC;
1725         spin_unlock_irq(shost->host_lock);
1726
1727         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1728
1729         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1730                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1731                 spin_lock_irq(shost->host_lock);
1732                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1733                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1734                 spin_unlock_irq(shost->host_lock);
1735                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1736         } else {
1737                 spin_lock_irq(shost->host_lock);
1738                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1739                 spin_unlock_irq(shost->host_lock);
1740         }
1741         return ndlp->nlp_state;
1742 }
1743
1744 static uint32_t
1745 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1746                          void *arg, uint32_t evt)
1747 {
1748         struct lpfc_iocbq *cmdiocb, *rspiocb;
1749         IOCB_t *irsp;
1750
1751         cmdiocb = (struct lpfc_iocbq *) arg;
1752         rspiocb = cmdiocb->context_un.rsp_iocb;
1753
1754         irsp = &rspiocb->iocb;
1755         if (irsp->ulpStatus) {
1756                 lpfc_drop_node(vport, ndlp);
1757                 return NLP_STE_FREED_NODE;
1758         }
1759         return ndlp->nlp_state;
1760 }
1761
1762 static uint32_t
1763 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1764                         void *arg, uint32_t evt)
1765 {
1766         struct lpfc_iocbq *cmdiocb, *rspiocb;
1767         IOCB_t *irsp;
1768
1769         cmdiocb = (struct lpfc_iocbq *) arg;
1770         rspiocb = cmdiocb->context_un.rsp_iocb;
1771
1772         irsp = &rspiocb->iocb;
1773         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1774                 lpfc_drop_node(vport, ndlp);
1775                 return NLP_STE_FREED_NODE;
1776         }
1777         return ndlp->nlp_state;
1778 }
1779
1780 static uint32_t
1781 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1782                         void *arg, uint32_t evt)
1783 {
1784         lpfc_unreg_rpi(vport, ndlp);
1785         /* This routine does nothing, just return the current state */
1786         return ndlp->nlp_state;
1787 }
1788
1789 static uint32_t
1790 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1791                          void *arg, uint32_t evt)
1792 {
1793         struct lpfc_iocbq *cmdiocb, *rspiocb;
1794         IOCB_t *irsp;
1795
1796         cmdiocb = (struct lpfc_iocbq *) arg;
1797         rspiocb = cmdiocb->context_un.rsp_iocb;
1798
1799         irsp = &rspiocb->iocb;
1800         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1801                 lpfc_drop_node(vport, ndlp);
1802                 return NLP_STE_FREED_NODE;
1803         }
1804         return ndlp->nlp_state;
1805 }
1806
1807 static uint32_t
1808 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1809                             struct lpfc_nodelist *ndlp,
1810                             void *arg, uint32_t evt)
1811 {
1812         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1813         MAILBOX_t    *mb = &pmb->mb;
1814
1815         if (!mb->mbxStatus)
1816                 ndlp->nlp_rpi = mb->un.varWords[0];
1817         else {
1818                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1819                         lpfc_drop_node(vport, ndlp);
1820                         return NLP_STE_FREED_NODE;
1821                 }
1822         }
1823         return ndlp->nlp_state;
1824 }
1825
1826 static uint32_t
1827 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1828                         void *arg, uint32_t evt)
1829 {
1830         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1831
1832         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1833                 spin_lock_irq(shost->host_lock);
1834                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1835                 spin_unlock_irq(shost->host_lock);
1836                 return ndlp->nlp_state;
1837         }
1838         lpfc_drop_node(vport, ndlp);
1839         return NLP_STE_FREED_NODE;
1840 }
1841
1842 static uint32_t
1843 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1844                            void *arg, uint32_t evt)
1845 {
1846         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1847
1848         /* Don't do anything that will mess up processing of the
1849          * previous RSCN.
1850          */
1851         if (vport->fc_flag & FC_RSCN_DEFERRED)
1852                 return ndlp->nlp_state;
1853
1854         spin_lock_irq(shost->host_lock);
1855         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1856         spin_unlock_irq(shost->host_lock);
1857         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1858                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1859         }
1860         return ndlp->nlp_state;
1861 }
1862
1863
1864 /* This next section defines the NPort Discovery State Machine */
1865
1866 /* There are 4 different double linked lists nodelist entries can reside on.
1867  * The plogi list and adisc list are used when Link Up discovery or RSCN
1868  * processing is needed. Each list holds the nodes that we will send PLOGI
1869  * or ADISC on. These lists will keep track of what nodes will be effected
1870  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1871  * The unmapped_list will contain all nodes that we have successfully logged
1872  * into at the Fibre Channel level. The mapped_list will contain all nodes
1873  * that are mapped FCP targets.
1874  */
1875 /*
1876  * The bind list is a list of undiscovered (potentially non-existent) nodes
1877  * that we have saved binding information on. This information is used when
1878  * nodes transition from the unmapped to the mapped list.
1879  */
1880 /* For UNUSED_NODE state, the node has just been allocated .
1881  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1882  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1883  * and put on the unmapped list. For ADISC processing, the node is taken off
1884  * the ADISC list and placed on either the mapped or unmapped list (depending
1885  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1886  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1887  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1888  * node, the node is taken off the unmapped list. The binding list is checked
1889  * for a valid binding, or a binding is automatically assigned. If binding
1890  * assignment is unsuccessful, the node is left on the unmapped list. If
1891  * binding assignment is successful, the associated binding list entry (if
1892  * any) is removed, and the node is placed on the mapped list.
1893  */
1894 /*
1895  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1896  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1897  * expire, all effected nodes will receive a DEVICE_RM event.
1898  */
1899 /*
1900  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1901  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1902  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1903  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1904  * we will first process the ADISC list.  32 entries are processed initially and
1905  * ADISC is initited for each one.  Completions / Events for each node are
1906  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1907  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1908  * waiting, and the ADISC list count is identically 0, then we are done. For
1909  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1910  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1911  * list.  32 entries are processed initially and PLOGI is initited for each one.
1912  * Completions / Events for each node are funnelled thru the state machine.  As
1913  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1914  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1915  * indentically 0, then we are done. We have now completed discovery / RSCN
1916  * handling. Upon completion, ALL nodes should be on either the mapped or
1917  * unmapped lists.
1918  */
1919
1920 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1921      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1922         /* Action routine                  Event       Current State  */
1923         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1924         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1925         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1926         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1927         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1928         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1929         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1930         lpfc_disc_illegal,              /* CMPL_PRLI       */
1931         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1932         lpfc_disc_illegal,              /* CMPL_ADISC      */
1933         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1934         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1935         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1936
1937         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1938         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
1939         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1940         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1941         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1942         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1943         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1944         lpfc_disc_illegal,              /* CMPL_PRLI       */
1945         lpfc_disc_illegal,              /* CMPL_LOGO       */
1946         lpfc_disc_illegal,              /* CMPL_ADISC      */
1947         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1948         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1949         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1950
1951         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1952         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1953         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1954         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1955         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1956         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1957         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1958         lpfc_disc_illegal,              /* CMPL_PRLI       */
1959         lpfc_disc_illegal,              /* CMPL_LOGO       */
1960         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1961         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1962         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1963         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1964
1965         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1966         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1967         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1968         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1969         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1970         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1971         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1972         lpfc_disc_illegal,              /* CMPL_PRLI       */
1973         lpfc_disc_illegal,              /* CMPL_LOGO       */
1974         lpfc_disc_illegal,              /* CMPL_ADISC      */
1975         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1976         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1977         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1978
1979         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1980         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1981         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1982         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1983         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1984         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1985         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1986         lpfc_cmpl_prli_prli_issue,      /* 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_prli_issue,      /* DEVICE_RM       */
1991         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1992
1993         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1994         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1995         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1996         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1997         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1998         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1999         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2000         lpfc_disc_illegal,              /* CMPL_PRLI       */
2001         lpfc_disc_illegal,              /* CMPL_LOGO       */
2002         lpfc_disc_illegal,              /* CMPL_ADISC      */
2003         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2004         lpfc_disc_illegal,              /* DEVICE_RM       */
2005         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2006
2007         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2008         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2009         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2010         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2011         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2012         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2013         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2014         lpfc_disc_illegal,              /* CMPL_PRLI       */
2015         lpfc_disc_illegal,              /* CMPL_LOGO       */
2016         lpfc_disc_illegal,              /* CMPL_ADISC      */
2017         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2018         lpfc_disc_illegal,              /* DEVICE_RM       */
2019         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2020
2021         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2022         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2023         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2024         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2025         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2026         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2027         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2028         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2029         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2030         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2031         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2032         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2033         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2034 };
2035
2036 int
2037 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2038                         void *arg, uint32_t evt)
2039 {
2040         uint32_t cur_state, rc;
2041         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2042                          uint32_t);
2043
2044         lpfc_nlp_get(ndlp);
2045         cur_state = ndlp->nlp_state;
2046
2047         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2048         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2049                          "0211 DSM in event x%x on NPort x%x in "
2050                          "state %d Data: x%x\n",
2051                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2052
2053         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2054                  "DSM in:          evt:%d ste:%d did:x%x",
2055                 evt, cur_state, ndlp->nlp_DID);
2056
2057         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2058         rc = (func) (vport, ndlp, arg, evt);
2059
2060         /* DSM out state <rc> on NPort <nlp_DID> */
2061         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2062                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2063                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2064
2065         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2066                  "DSM out:         ste:%d did:x%x flg:x%x",
2067                 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2068
2069         lpfc_nlp_put(ndlp);
2070
2071         return rc;
2072 }