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) 2004-2005 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
  39
  40 /* Called to verify a rcv'ed ADISC was intended for us. */
  41 static int
  42 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
  43                  struct lpfc_name * nn, struct lpfc_name * pn)
  44 {
  45         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  46          * table entry for that node.
  47          */
  48         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
  49                 return (0);
  50
  51         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
  52                 return (0);
  53
  54         /* we match, return success */
  55         return (1);
  56 }
  57
  58
  59 int
  60 lpfc_check_sparm(struct lpfc_hba * phba,
  61                  struct lpfc_nodelist * ndlp, struct serv_parm * sp,
  62                  uint32_t class)
  63 {
  64         volatile struct serv_parm *hsp = &phba->fc_sparam;
  65         /* First check for supported version */
  66
  67         /* Next check for class validity */
  68         if (sp->cls1.classValid) {
  69
  70                 if (sp->cls1.rcvDataSizeMsb > hsp->cls1.rcvDataSizeMsb)
  71                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  72                 if (sp->cls1.rcvDataSizeLsb > hsp->cls1.rcvDataSizeLsb)
  73                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  74         } else if (class == CLASS1) {
  75                 return (0);
  76         }
  77
  78         if (sp->cls2.classValid) {
  79
  80                 if (sp->cls2.rcvDataSizeMsb > hsp->cls2.rcvDataSizeMsb)
  81                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  82                 if (sp->cls2.rcvDataSizeLsb > hsp->cls2.rcvDataSizeLsb)
  83                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  84         } else if (class == CLASS2) {
  85                 return (0);
  86         }
  87
  88         if (sp->cls3.classValid) {
  89
  90                 if (sp->cls3.rcvDataSizeMsb > hsp->cls3.rcvDataSizeMsb)
  91                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
  92                 if (sp->cls3.rcvDataSizeLsb > hsp->cls3.rcvDataSizeLsb)
  93                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
  94         } else if (class == CLASS3) {
  95                 return (0);
  96         }
  97
  98         if (sp->cmn.bbRcvSizeMsb > hsp->cmn.bbRcvSizeMsb)
  99                 sp->cmn.bbRcvSizeMsb = hsp->cmn.bbRcvSizeMsb;
 100         if (sp->cmn.bbRcvSizeLsb > hsp->cmn.bbRcvSizeLsb)
 101                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 102
 103         /* If check is good, copy wwpn wwnn into ndlp */
 104         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 105         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 106         return (1);
 107 }
 108
 109 static void *
 110 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 111                       struct lpfc_iocbq *cmdiocb,
 112                       struct lpfc_iocbq *rspiocb)
 113 {
 114         struct lpfc_dmabuf *pcmd, *prsp;
 115         uint32_t *lp;
 116         void     *ptr = NULL;
 117         IOCB_t   *irsp;
 118
 119         irsp = &rspiocb->iocb;
 120         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 121
 122         /* For lpfc_els_abort, context2 could be zero'ed to delay
 123          * freeing associated memory till after ABTS completes.
 124          */
 125         if (pcmd) {
 126                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 127                                        list);
 128                 if (prsp) {
 129                         lp = (uint32_t *) prsp->virt;
 130                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 131                 }
 132         }
 133         else {
 134                 /* Force ulpStatus error since we are returning NULL ptr */
 135                 if (!(irsp->ulpStatus)) {
 136                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 137                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 138                 }
 139                 ptr = NULL;
 140         }
 141         return (ptr);
 142 }
 143
 144
 145 /*
 146  * Free resources / clean up outstanding I/Os
 147  * associated with a LPFC_NODELIST entry. This
 148  * routine effectively results in a "software abort".
 149  */
 150 int
 151 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 152         int send_abts)
 153 {
 154         struct lpfc_sli *psli;
 155         struct lpfc_sli_ring *pring;
 156         struct lpfc_iocbq *iocb, *next_iocb;
 157         IOCB_t *icmd;
 158         int    found = 0;
 159
 160         /* Abort outstanding I/O on NPort <nlp_DID> */
 161         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 162                         "%d:0201 Abort outstanding I/O on NPort x%x "
 163                         "Data: x%x x%x x%x\n",
 164                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 165                         ndlp->nlp_state, ndlp->nlp_rpi);
 166
 167         psli = &phba->sli;
 168         pring = &psli->ring[LPFC_ELS_RING];
 169
 170         /* First check the txq */
 171         do {
 172                 found = 0;
 173                 spin_lock_irq(phba->host->host_lock);
 174                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 175                         /* Check to see if iocb matches the nport we are looking
 176                            for */
 177                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 178                                 found = 1;
 179                                 /* It matches, so deque and call compl with an
 180                                    error */
 181                                 list_del(&iocb->list);
 182                                 pring->txq_cnt--;
 183                                 if (iocb->iocb_cmpl) {
 184                                         icmd = &iocb->iocb;
 185                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 186                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 187                                         spin_unlock_irq(phba->host->host_lock);
 188                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 189                                         spin_lock_irq(phba->host->host_lock);
 190                                 } else
 191                                         lpfc_sli_release_iocbq(phba, iocb);
 192                                 break;
 193                         }
 194                 }
 195                 spin_unlock_irq(phba->host->host_lock);
 196         } while (found);
 197
 198         /* Everything on txcmplq will be returned by firmware
 199          * with a no rpi / linkdown / abort error.  For ring 0,
 200          * ELS discovery, we want to get rid of it right here.
 201          */
 202         /* Next check the txcmplq */
 203         do {
 204                 found = 0;
 205                 spin_lock_irq(phba->host->host_lock);
 206                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 207                                          list) {
 208                         /* Check to see if iocb matches the nport we are looking
 209                            for */
 210                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 211                                 found = 1;
 212                                 /* It matches, so deque and call compl with an
 213                                    error */
 214                                 list_del(&iocb->list);
 215                                 pring->txcmplq_cnt--;
 216
 217                                 icmd = &iocb->iocb;
 218                                 /* If the driver is completing an ELS
 219                                  * command early, flush it out of the firmware.
 220                                  */
 221                                 if (send_abts &&
 222                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 223                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 224                                         lpfc_sli_issue_abort_iotag32(phba,
 225                                                              pring, iocb);
 226                                 }
 227                                 if (iocb->iocb_cmpl) {
 228                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 229                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 230                                         spin_unlock_irq(phba->host->host_lock);
 231                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 232                                         spin_lock_irq(phba->host->host_lock);
 233                                 } else
 234                                         lpfc_sli_release_iocbq(phba, iocb);
 235                                 break;
 236                         }
 237                 }
 238                 spin_unlock_irq(phba->host->host_lock);
 239         } while(found);
 240
 241         /* If we are delaying issuing an ELS command, cancel it */
 242         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
 243                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 244                 del_timer_sync(&ndlp->nlp_delayfunc);
 245                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 246                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 247         }
 248         return (0);
 249 }
 250
 251 static int
 252 lpfc_rcv_plogi(struct lpfc_hba * phba,
 253                       struct lpfc_nodelist * ndlp,
 254                       struct lpfc_iocbq *cmdiocb)
 255 {
 256         struct lpfc_dmabuf *pcmd;
 257         uint32_t *lp;
 258         IOCB_t *icmd;
 259         struct serv_parm *sp;
 260         LPFC_MBOXQ_t *mbox;
 261         struct ls_rjt stat;
 262         int rc;
 263
 264         memset(&stat, 0, sizeof (struct ls_rjt));
 265         if (phba->hba_state <= LPFC_FLOGI) {
 266                 /* Before responding to PLOGI, check for pt2pt mode.
 267                  * If we are pt2pt, with an outstanding FLOGI, abort
 268                  * the FLOGI and resend it first.
 269                  */
 270                 if (phba->fc_flag & FC_PT2PT) {
 271                         lpfc_els_abort_flogi(phba);
 272                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 273                                 /* If the other side is supposed to initiate
 274                                  * the PLOGI anyway, just ACC it now and
 275                                  * move on with discovery.
 276                                  */
 277                                 phba->fc_edtov = FF_DEF_EDTOV;
 278                                 phba->fc_ratov = FF_DEF_RATOV;
 279                                 /* Start discovery - this should just do
 280                                    CLEAR_LA */
 281                                 lpfc_disc_start(phba);
 282                         }
 283                         else {
 284                                 lpfc_initial_flogi(phba);
 285                         }
 286                 }
 287                 else {
 288                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 289                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 290                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 291                                             ndlp);
 292                         return 0;
 293                 }
 294         }
 295         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 296         lp = (uint32_t *) pcmd->virt;
 297         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 298         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 299                 /* Reject this request because invalid parameters */
 300                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 301                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 302                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 303                 return (0);
 304         }
 305         icmd = &cmdiocb->iocb;
 306
 307         /* PLOGI chkparm OK */
 308         lpfc_printf_log(phba,
 309                         KERN_INFO,
 310                         LOG_ELS,
 311                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 312                         phba->brd_no,
 313                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 314                         ndlp->nlp_rpi);
 315
 316         if ((phba->cfg_fcp_class == 2) &&
 317             (sp->cls2.classValid)) {
 318                 ndlp->nlp_fcp_info |= CLASS2;
 319         } else {
 320                 ndlp->nlp_fcp_info |= CLASS3;
 321         }
 322         ndlp->nlp_class_sup = 0;
 323         if (sp->cls1.classValid)
 324                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 325         if (sp->cls2.classValid)
 326                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 327         if (sp->cls3.classValid)
 328                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 329         if (sp->cls4.classValid)
 330                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 331         ndlp->nlp_maxframe =
 332                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 333
 334         /* no need to reg_login if we are already in one of these states */
 335         switch(ndlp->nlp_state) {
 336         case  NLP_STE_NPR_NODE:
 337                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 338                         break;
 339         case  NLP_STE_REG_LOGIN_ISSUE:
 340         case  NLP_STE_PRLI_ISSUE:
 341         case  NLP_STE_UNMAPPED_NODE:
 342         case  NLP_STE_MAPPED_NODE:
 343                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 344                 return (1);
 345         }
 346
 347         if ((phba->fc_flag & FC_PT2PT)
 348             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 349                 /* rcv'ed PLOGI decides what our NPortId will be */
 350                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 351                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 352                 if (mbox == NULL)
 353                         goto out;
 354                 lpfc_config_link(phba, mbox);
 355                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 356                 rc = lpfc_sli_issue_mbox
 357                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 358                 if (rc == MBX_NOT_FINISHED) {
 359                         mempool_free( mbox, phba->mbox_mem_pool);
 360                         goto out;
 361                 }
 362
 363                 lpfc_can_disctmo(phba);
 364         }
 365         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 366         if (mbox == NULL)
 367                 goto out;
 368
 369         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 370                            (uint8_t *) sp, mbox, 0)) {
 371                 mempool_free( mbox, phba->mbox_mem_pool);
 372                 goto out;
 373         }
 374
 375         /* ACC PLOGI rsp command needs to execute first,
 376          * queue this mbox command to be processed later.
 377          */
 378         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 379         mbox->context2  = ndlp;
 380         ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
 381
 382         /* If there is an outstanding PLOGI issued, abort it before
 383          * sending ACC rsp to PLOGI recieved.
 384          */
 385         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 386                 /* software abort outstanding PLOGI */
 387                 lpfc_els_abort(phba, ndlp, 1);
 388         }
 389         ndlp->nlp_flag |= NLP_RCV_PLOGI;
 390         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 391         return (1);
 392
 393 out:
 394         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 395         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 396         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 397         return (0);
 398 }
 399
 400 static int
 401 lpfc_rcv_padisc(struct lpfc_hba * phba,
 402                 struct lpfc_nodelist * ndlp,
 403                 struct lpfc_iocbq *cmdiocb)
 404 {
 405         struct lpfc_dmabuf *pcmd;
 406         struct serv_parm *sp;
 407         struct lpfc_name *pnn, *ppn;
 408         struct ls_rjt stat;
 409         ADISC *ap;
 410         IOCB_t *icmd;
 411         uint32_t *lp;
 412         uint32_t cmd;
 413
 414         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 415         lp = (uint32_t *) pcmd->virt;
 416
 417         cmd = *lp++;
 418         if (cmd == ELS_CMD_ADISC) {
 419                 ap = (ADISC *) lp;
 420                 pnn = (struct lpfc_name *) & ap->nodeName;
 421                 ppn = (struct lpfc_name *) & ap->portName;
 422         } else {
 423                 sp = (struct serv_parm *) lp;
 424                 pnn = (struct lpfc_name *) & sp->nodeName;
 425                 ppn = (struct lpfc_name *) & sp->portName;
 426         }
 427
 428         icmd = &cmdiocb->iocb;
 429         if ((icmd->ulpStatus == 0) &&
 430             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 431                 if (cmd == ELS_CMD_ADISC) {
 432                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 433                 }
 434                 else {
 435                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 436                                 NULL, 0);
 437                 }
 438                 return (1);
 439         }
 440         /* Reject this request because invalid parameters */
 441         stat.un.b.lsRjtRsvd0 = 0;
 442         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 443         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 444         stat.un.b.vendorUnique = 0;
 445         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 446
 447         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 448         /* 1 sec timeout */
 449         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 450
 451         spin_lock_irq(phba->host->host_lock);
 452         ndlp->nlp_flag |= NLP_DELAY_TMO;
 453         spin_unlock_irq(phba->host->host_lock);
 454         ndlp->nlp_state = NLP_STE_NPR_NODE;
 455         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 456         return (0);
 457 }
 458
 459 static int
 460 lpfc_rcv_logo(struct lpfc_hba * phba,
 461                       struct lpfc_nodelist * ndlp,
 462                       struct lpfc_iocbq *cmdiocb)
 463 {
 464         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 465         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 466          * PLOGIs during LOGO storms from a device.
 467          */
 468         ndlp->nlp_flag |= NLP_LOGO_ACC;
 469         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 470
 471         if (!(ndlp->nlp_type & NLP_FABRIC)) {
 472                 /* Only try to re-login if this is NOT a Fabric Node */
 473                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 474                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 475                 spin_lock_irq(phba->host->host_lock);
 476                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 477                 spin_unlock_irq(phba->host->host_lock);
 478         }
 479
 480         ndlp->nlp_state = NLP_STE_NPR_NODE;
 481         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 482
 483         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 484         /* The driver has to wait until the ACC completes before it continues
 485          * processing the LOGO.  The action will resume in
 486          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 487          * unreg_login, the driver waits so the ACC does not get aborted.
 488          */
 489         return (0);
 490 }
 491
 492 static void
 493 lpfc_rcv_prli(struct lpfc_hba * phba,
 494                       struct lpfc_nodelist * ndlp,
 495                       struct lpfc_iocbq *cmdiocb)
 496 {
 497         struct lpfc_dmabuf *pcmd;
 498         uint32_t *lp;
 499         PRLI *npr;
 500         struct fc_rport *rport = ndlp->rport;
 501         u32 roles;
 502
 503         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 504         lp = (uint32_t *) pcmd->virt;
 505         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 506
 507         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 508         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 509         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 510             (npr->prliType == PRLI_FCP_TYPE)) {
 511                 if (npr->initiatorFunc)
 512                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 513                 if (npr->targetFunc)
 514                         ndlp->nlp_type |= NLP_FCP_TARGET;
 515                 if (npr->Retry)
 516                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 517         }
 518         if (rport) {
 519                 /* We need to update the rport role values */
 520                 roles = FC_RPORT_ROLE_UNKNOWN;
 521                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 522                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 523                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 524                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 525                 fc_remote_port_rolechg(rport, roles);
 526         }
 527 }
 528
 529 static uint32_t
 530 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 531                       struct lpfc_nodelist * ndlp)
 532 {
 533         /* Check config parameter use-adisc or FCP-2 */
 534         if ((phba->cfg_use_adisc == 0) &&
 535                 !(phba->fc_flag & FC_RSCN_MODE)) {
 536                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 537                         return (0);
 538         }
 539         spin_lock_irq(phba->host->host_lock);
 540         ndlp->nlp_flag |= NLP_NPR_ADISC;
 541         spin_unlock_irq(phba->host->host_lock);
 542         return (1);
 543 }
 544
 545 static uint32_t
 546 lpfc_disc_noop(struct lpfc_hba * phba,
 547                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 548 {
 549         /* This routine does nothing, just return the current state */
 550         return (ndlp->nlp_state);
 551 }
 552
 553 static uint32_t
 554 lpfc_disc_illegal(struct lpfc_hba * phba,
 555                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 556 {
 557         lpfc_printf_log(phba,
 558                         KERN_ERR,
 559                         LOG_DISCOVERY,
 560                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 561                         "state x%x Data: x%x x%x\n",
 562                         phba->brd_no,
 563                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 564                         ndlp->nlp_flag);
 565         return (ndlp->nlp_state);
 566 }
 567
 568 /* Start of Discovery State Machine routines */
 569
 570 static uint32_t
 571 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 572                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 573 {
 574         struct lpfc_iocbq *cmdiocb;
 575
 576         cmdiocb = (struct lpfc_iocbq *) arg;
 577
 578         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 579                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 580                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 581                 return (ndlp->nlp_state);
 582         }
 583         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 584         return (NLP_STE_FREED_NODE);
 585 }
 586
 587 static uint32_t
 588 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 589                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 590 {
 591         lpfc_issue_els_logo(phba, ndlp, 0);
 592         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 593         return (ndlp->nlp_state);
 594 }
 595
 596 static uint32_t
 597 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 598                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 599 {
 600         struct lpfc_iocbq     *cmdiocb;
 601
 602         cmdiocb = (struct lpfc_iocbq *) arg;
 603
 604         spin_lock_irq(phba->host->host_lock);
 605         ndlp->nlp_flag |= NLP_LOGO_ACC;
 606         spin_unlock_irq(phba->host->host_lock);
 607         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 608         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 609
 610         return (ndlp->nlp_state);
 611 }
 612
 613 static uint32_t
 614 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 615                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 616 {
 617         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 618         return (NLP_STE_FREED_NODE);
 619 }
 620
 621 static uint32_t
 622 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 623                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 624 {
 625         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 626         return (NLP_STE_FREED_NODE);
 627 }
 628
 629 static uint32_t
 630 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 631                            void *arg, uint32_t evt)
 632 {
 633         struct lpfc_iocbq *cmdiocb = arg;
 634         struct lpfc_dmabuf *pcmd;
 635         struct serv_parm *sp;
 636         uint32_t *lp;
 637         struct ls_rjt stat;
 638         int port_cmp;
 639
 640         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 641         lp = (uint32_t *) pcmd->virt;
 642         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 643
 644         memset(&stat, 0, sizeof (struct ls_rjt));
 645
 646         /* For a PLOGI, we only accept if our portname is less
 647          * than the remote portname.
 648          */
 649         phba->fc_stat.elsLogiCol++;
 650         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 651                           sizeof (struct lpfc_name));
 652
 653         if (port_cmp >= 0) {
 654                 /* Reject this request because the remote node will accept
 655                    ours */
 656                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 657                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 658                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 659         }
 660         else {
 661                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 662         } /* if our portname was less */
 663
 664         return (ndlp->nlp_state);
 665 }
 666
 667 static uint32_t
 668 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 669                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 670 {
 671         struct lpfc_iocbq     *cmdiocb;
 672
 673         cmdiocb = (struct lpfc_iocbq *) arg;
 674
 675         /* software abort outstanding PLOGI */
 676         lpfc_els_abort(phba, ndlp, 1);
 677         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 678         spin_lock_irq(phba->host->host_lock);
 679         ndlp->nlp_flag |= NLP_DELAY_TMO;
 680         spin_unlock_irq(phba->host->host_lock);
 681
 682         if (evt == NLP_EVT_RCV_LOGO) {
 683                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 684         }
 685         else {
 686                 lpfc_issue_els_logo(phba, ndlp, 0);
 687         }
 688
 689         /* Put ndlp in npr list set plogi timer for 1 sec */
 690         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 691         ndlp->nlp_state = NLP_STE_NPR_NODE;
 692         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 693
 694         return (ndlp->nlp_state);
 695 }
 696
 697 static uint32_t
 698 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 699                             struct lpfc_nodelist * ndlp, void *arg,
 700                             uint32_t evt)
 701 {
 702         struct lpfc_iocbq *cmdiocb, *rspiocb;
 703         struct lpfc_dmabuf *pcmd, *prsp;
 704         uint32_t *lp;
 705         IOCB_t *irsp;
 706         struct serv_parm *sp;
 707         LPFC_MBOXQ_t *mbox;
 708
 709         cmdiocb = (struct lpfc_iocbq *) arg;
 710         rspiocb = cmdiocb->context_un.rsp_iocb;
 711
 712         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 713                 return (ndlp->nlp_state);
 714         }
 715
 716         irsp = &rspiocb->iocb;
 717
 718         if (irsp->ulpStatus)
 719                 goto out;
 720
 721         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 722
 723         prsp = list_get_first(&pcmd->list,
 724                               struct lpfc_dmabuf,
 725                               list);
 726         lp = (uint32_t *) prsp->virt;
 727
 728         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 729         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 730                 goto out;
 731
 732         /* PLOGI chkparm OK */
 733         lpfc_printf_log(phba,
 734                         KERN_INFO,
 735                         LOG_ELS,
 736                         "%d:0121 PLOGI chkparm OK "
 737                         "Data: x%x x%x x%x x%x\n",
 738                         phba->brd_no,
 739                         ndlp->nlp_DID, ndlp->nlp_state,
 740                         ndlp->nlp_flag, ndlp->nlp_rpi);
 741
 742         if ((phba->cfg_fcp_class == 2) &&
 743             (sp->cls2.classValid)) {
 744                 ndlp->nlp_fcp_info |= CLASS2;
 745         } else {
 746                 ndlp->nlp_fcp_info |= CLASS3;
 747         }
 748         ndlp->nlp_class_sup = 0;
 749         if (sp->cls1.classValid)
 750                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 751         if (sp->cls2.classValid)
 752                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 753         if (sp->cls3.classValid)
 754                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 755         if (sp->cls4.classValid)
 756                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 757         ndlp->nlp_maxframe =
 758                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 759                 sp->cmn.bbRcvSizeLsb;
 760
 761         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 762                                    GFP_KERNEL)))
 763                 goto out;
 764
 765         lpfc_unreg_rpi(phba, ndlp);
 766         if (lpfc_reg_login
 767             (phba, irsp->un.elsreq64.remoteID,
 768              (uint8_t *) sp, mbox, 0) == 0) {
 769                 /* set_slim mailbox command needs to
 770                  * execute first, queue this command to
 771                  * be processed later.
 772                  */
 773                 switch(ndlp->nlp_DID) {
 774                 case NameServer_DID:
 775                         mbox->mbox_cmpl =
 776                                 lpfc_mbx_cmpl_ns_reg_login;
 777                         break;
 778                 case FDMI_DID:
 779                         mbox->mbox_cmpl =
 780                                 lpfc_mbx_cmpl_fdmi_reg_login;
 781                         break;
 782                 default:
 783                         mbox->mbox_cmpl =
 784                                 lpfc_mbx_cmpl_reg_login;
 785                 }
 786                 mbox->context2 = ndlp;
 787                 if (lpfc_sli_issue_mbox(phba, mbox,
 788                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 789                     != MBX_NOT_FINISHED) {
 790                         ndlp->nlp_state =
 791                                 NLP_STE_REG_LOGIN_ISSUE;
 792                         lpfc_nlp_list(phba, ndlp,
 793                                       NLP_REGLOGIN_LIST);
 794                         return (ndlp->nlp_state);
 795                 }
 796                 mempool_free(mbox, phba->mbox_mem_pool);
 797         } else {
 798                 mempool_free(mbox, phba->mbox_mem_pool);
 799         }
 800
 801
 802  out:
 803         /* Free this node since the driver cannot login or has the wrong
 804            sparm */
 805         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 806         return (NLP_STE_FREED_NODE);
 807 }
 808
 809 static uint32_t
 810 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 811                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 812 {
 813         /* software abort outstanding PLOGI */
 814         lpfc_els_abort(phba, ndlp, 1);
 815
 816         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 817         return (NLP_STE_FREED_NODE);
 818 }
 819
 820 static uint32_t
 821 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 822                             struct lpfc_nodelist * ndlp, void *arg,
 823                             uint32_t evt)
 824 {
 825         /* software abort outstanding PLOGI */
 826         lpfc_els_abort(phba, ndlp, 1);
 827
 828         ndlp->nlp_state = NLP_STE_NPR_NODE;
 829         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 830         spin_lock_irq(phba->host->host_lock);
 831         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 832         spin_unlock_irq(phba->host->host_lock);
 833
 834         return (ndlp->nlp_state);
 835 }
 836
 837 static uint32_t
 838 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 839                             struct lpfc_nodelist * ndlp, void *arg,
 840                             uint32_t evt)
 841 {
 842         struct lpfc_iocbq *cmdiocb;
 843
 844         /* software abort outstanding ADISC */
 845         lpfc_els_abort(phba, ndlp, 1);
 846
 847         cmdiocb = (struct lpfc_iocbq *) arg;
 848
 849         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 850                 return (ndlp->nlp_state);
 851         }
 852         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 853         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 854         lpfc_issue_els_plogi(phba, ndlp, 0);
 855
 856         return (ndlp->nlp_state);
 857 }
 858
 859 static uint32_t
 860 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 861                             struct lpfc_nodelist * ndlp, void *arg,
 862                             uint32_t evt)
 863 {
 864         struct lpfc_iocbq *cmdiocb;
 865
 866         cmdiocb = (struct lpfc_iocbq *) arg;
 867
 868         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 869         return (ndlp->nlp_state);
 870 }
 871
 872 static uint32_t
 873 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 874                             struct lpfc_nodelist * ndlp, void *arg,
 875                             uint32_t evt)
 876 {
 877         struct lpfc_iocbq *cmdiocb;
 878
 879         cmdiocb = (struct lpfc_iocbq *) arg;
 880
 881         /* software abort outstanding ADISC */
 882         lpfc_els_abort(phba, ndlp, 0);
 883
 884         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 885         return (ndlp->nlp_state);
 886 }
 887
 888 static uint32_t
 889 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 890                             struct lpfc_nodelist * ndlp, void *arg,
 891                             uint32_t evt)
 892 {
 893         struct lpfc_iocbq *cmdiocb;
 894
 895         cmdiocb = (struct lpfc_iocbq *) arg;
 896
 897         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 898         return (ndlp->nlp_state);
 899 }
 900
 901 static uint32_t
 902 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 903                             struct lpfc_nodelist * ndlp, void *arg,
 904                             uint32_t evt)
 905 {
 906         struct lpfc_iocbq *cmdiocb;
 907
 908         cmdiocb = (struct lpfc_iocbq *) arg;
 909
 910         /* Treat like rcv logo */
 911         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 912         return (ndlp->nlp_state);
 913 }
 914
 915 static uint32_t
 916 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 917                             struct lpfc_nodelist * ndlp, void *arg,
 918                             uint32_t evt)
 919 {
 920         struct lpfc_iocbq *cmdiocb, *rspiocb;
 921         IOCB_t *irsp;
 922         ADISC *ap;
 923
 924         cmdiocb = (struct lpfc_iocbq *) arg;
 925         rspiocb = cmdiocb->context_un.rsp_iocb;
 926
 927         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 928         irsp = &rspiocb->iocb;
 929
 930         if ((irsp->ulpStatus) ||
 931                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 932                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 933                 /* 1 sec timeout */
 934                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 935                 spin_lock_irq(phba->host->host_lock);
 936                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 937                 spin_unlock_irq(phba->host->host_lock);
 938
 939                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 940                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 941
 942                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 943                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 944                 lpfc_unreg_rpi(phba, ndlp);
 945                 return (ndlp->nlp_state);
 946         }
 947         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 948                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 949                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 950         } else {
 951                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 952                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 953         }
 954         return (ndlp->nlp_state);
 955 }
 956
 957 static uint32_t
 958 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 959                             struct lpfc_nodelist * ndlp, void *arg,
 960                             uint32_t evt)
 961 {
 962         /* software abort outstanding ADISC */
 963         lpfc_els_abort(phba, ndlp, 1);
 964
 965         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 966         return (NLP_STE_FREED_NODE);
 967 }
 968
 969 static uint32_t
 970 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
 971                             struct lpfc_nodelist * ndlp, void *arg,
 972                             uint32_t evt)
 973 {
 974         /* software abort outstanding ADISC */
 975         lpfc_els_abort(phba, ndlp, 1);
 976
 977         ndlp->nlp_state = NLP_STE_NPR_NODE;
 978         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 979         spin_lock_irq(phba->host->host_lock);
 980         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 981         spin_unlock_irq(phba->host->host_lock);
 982
 983         lpfc_disc_set_adisc(phba, ndlp);
 984         return (ndlp->nlp_state);
 985 }
 986
 987 static uint32_t
 988 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
 989                               struct lpfc_nodelist * ndlp, void *arg,
 990                               uint32_t evt)
 991 {
 992         struct lpfc_iocbq *cmdiocb;
 993
 994         cmdiocb = (struct lpfc_iocbq *) arg;
 995
 996         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 997         return (ndlp->nlp_state);
 998 }
 999
1000 static uint32_t
1001 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1002                              struct lpfc_nodelist * ndlp, void *arg,
1003                              uint32_t evt)
1004 {
1005         struct lpfc_iocbq *cmdiocb;
1006
1007         cmdiocb = (struct lpfc_iocbq *) arg;
1008
1009         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1010         return (ndlp->nlp_state);
1011 }
1012
1013 static uint32_t
1014 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1015                              struct lpfc_nodelist * ndlp, void *arg,
1016                              uint32_t evt)
1017 {
1018         struct lpfc_iocbq *cmdiocb;
1019
1020         cmdiocb = (struct lpfc_iocbq *) arg;
1021
1022         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1023         return (ndlp->nlp_state);
1024 }
1025
1026 static uint32_t
1027 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1028                                struct lpfc_nodelist * ndlp, void *arg,
1029                                uint32_t evt)
1030 {
1031         struct lpfc_iocbq *cmdiocb;
1032
1033         cmdiocb = (struct lpfc_iocbq *) arg;
1034
1035         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1036         return (ndlp->nlp_state);
1037 }
1038
1039 static uint32_t
1040 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1041                              struct lpfc_nodelist * ndlp, void *arg,
1042                              uint32_t evt)
1043 {
1044         struct lpfc_iocbq *cmdiocb;
1045
1046         cmdiocb = (struct lpfc_iocbq *) arg;
1047         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1048         return (ndlp->nlp_state);
1049 }
1050
1051 static uint32_t
1052 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1053                                   struct lpfc_nodelist * ndlp,
1054                                   void *arg, uint32_t evt)
1055 {
1056         LPFC_MBOXQ_t *pmb;
1057         MAILBOX_t *mb;
1058         uint32_t did;
1059
1060         pmb = (LPFC_MBOXQ_t *) arg;
1061         mb = &pmb->mb;
1062         did = mb->un.varWords[1];
1063         if (mb->mbxStatus) {
1064                 /* RegLogin failed */
1065                 lpfc_printf_log(phba,
1066                                 KERN_ERR,
1067                                 LOG_DISCOVERY,
1068                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1069                                 phba->brd_no,
1070                                 did, mb->mbxStatus, phba->hba_state);
1071
1072                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1073                 spin_lock_irq(phba->host->host_lock);
1074                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1075                 spin_unlock_irq(phba->host->host_lock);
1076
1077                 lpfc_issue_els_logo(phba, ndlp, 0);
1078                 /* Put ndlp in npr list set plogi timer for 1 sec */
1079                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1080                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1081                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1082                 return (ndlp->nlp_state);
1083         }
1084
1085         ndlp->nlp_rpi = mb->un.varWords[0];
1086
1087         /* Only if we are not a fabric nport do we issue PRLI */
1088         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1089                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1090                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1091                 lpfc_issue_els_prli(phba, ndlp, 0);
1092         } else {
1093                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1094                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1095         }
1096         return (ndlp->nlp_state);
1097 }
1098
1099 static uint32_t
1100 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1101                               struct lpfc_nodelist * ndlp, void *arg,
1102                               uint32_t evt)
1103 {
1104         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1105         return (NLP_STE_FREED_NODE);
1106 }
1107
1108 static uint32_t
1109 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1110                                struct lpfc_nodelist * ndlp, void *arg,
1111                                uint32_t evt)
1112 {
1113         ndlp->nlp_state = NLP_STE_NPR_NODE;
1114         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1115         spin_lock_irq(phba->host->host_lock);
1116         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1117         spin_unlock_irq(phba->host->host_lock);
1118         return (ndlp->nlp_state);
1119 }
1120
1121 static uint32_t
1122 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1123                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1124 {
1125         struct lpfc_iocbq *cmdiocb;
1126
1127         cmdiocb = (struct lpfc_iocbq *) arg;
1128
1129         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1130         return (ndlp->nlp_state);
1131 }
1132
1133 static uint32_t
1134 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1135                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1136 {
1137         struct lpfc_iocbq *cmdiocb;
1138
1139         cmdiocb = (struct lpfc_iocbq *) arg;
1140
1141         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1142         return (ndlp->nlp_state);
1143 }
1144
1145 static uint32_t
1146 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1147                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1148 {
1149         struct lpfc_iocbq *cmdiocb;
1150
1151         cmdiocb = (struct lpfc_iocbq *) arg;
1152
1153         /* Software abort outstanding PRLI before sending acc */
1154         lpfc_els_abort(phba, ndlp, 1);
1155
1156         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1157         return (ndlp->nlp_state);
1158 }
1159
1160 static uint32_t
1161 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1162                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1163 {
1164         struct lpfc_iocbq *cmdiocb;
1165
1166         cmdiocb = (struct lpfc_iocbq *) arg;
1167
1168         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1169         return (ndlp->nlp_state);
1170 }
1171
1172 /* This routine is envoked when we rcv a PRLO request from a nport
1173  * we are logged into.  We should send back a PRLO rsp setting the
1174  * appropriate bits.
1175  * NEXT STATE = PRLI_ISSUE
1176  */
1177 static uint32_t
1178 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1179                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1180 {
1181         struct lpfc_iocbq *cmdiocb;
1182
1183         cmdiocb = (struct lpfc_iocbq *) arg;
1184         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1185         return (ndlp->nlp_state);
1186 }
1187
1188 static uint32_t
1189 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1190                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1191 {
1192         struct lpfc_iocbq *cmdiocb, *rspiocb;
1193         IOCB_t *irsp;
1194         PRLI *npr;
1195
1196         cmdiocb = (struct lpfc_iocbq *) arg;
1197         rspiocb = cmdiocb->context_un.rsp_iocb;
1198         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1199
1200         irsp = &rspiocb->iocb;
1201         if (irsp->ulpStatus) {
1202                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1203                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1204                 return (ndlp->nlp_state);
1205         }
1206
1207         /* Check out PRLI rsp */
1208         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1209         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1210         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1211             (npr->prliType == PRLI_FCP_TYPE)) {
1212                 if (npr->initiatorFunc)
1213                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1214                 if (npr->targetFunc)
1215                         ndlp->nlp_type |= NLP_FCP_TARGET;
1216                 if (npr->Retry)
1217                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1218         }
1219
1220         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1221         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1222         return (ndlp->nlp_state);
1223 }
1224
1225 /*! lpfc_device_rm_prli_issue
1226   *
1227   * \pre
1228   * \post
1229   * \param   phba
1230   * \param   ndlp
1231   * \param   arg
1232   * \param   evt
1233   * \return  uint32_t
1234   *
1235   * \b Description:
1236   *    This routine is envoked when we a request to remove a nport we are in the
1237   *    process of PRLIing. We should software abort outstanding prli, unreg
1238   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1239   *    on plogi list so it can be freed when LOGO completes.
1240   *
1241   */
1242 static uint32_t
1243 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1244                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1245 {
1246         /* software abort outstanding PRLI */
1247         lpfc_els_abort(phba, ndlp, 1);
1248
1249         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1250         return (NLP_STE_FREED_NODE);
1251 }
1252
1253
1254 /*! lpfc_device_recov_prli_issue
1255   *
1256   * \pre
1257   * \post
1258   * \param   phba
1259   * \param   ndlp
1260   * \param   arg
1261   * \param   evt
1262   * \return  uint32_t
1263   *
1264   * \b Description:
1265   *    The routine is envoked when the state of a device is unknown, like
1266   *    during a link down. We should remove the nodelist entry from the
1267   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1268   *    outstanding PRLI command, then free the node entry.
1269   */
1270 static uint32_t
1271 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1272                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1273 {
1274         /* software abort outstanding PRLI */
1275         lpfc_els_abort(phba, ndlp, 1);
1276
1277         ndlp->nlp_state = NLP_STE_NPR_NODE;
1278         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1279         spin_lock_irq(phba->host->host_lock);
1280         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1281         spin_unlock_irq(phba->host->host_lock);
1282         return (ndlp->nlp_state);
1283 }
1284
1285 static uint32_t
1286 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1287                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1288 {
1289         struct lpfc_iocbq *cmdiocb;
1290
1291         cmdiocb = (struct lpfc_iocbq *) arg;
1292
1293         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1294         return (ndlp->nlp_state);
1295 }
1296
1297 static uint32_t
1298 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1299                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1300 {
1301         struct lpfc_iocbq *cmdiocb;
1302
1303         cmdiocb = (struct lpfc_iocbq *) arg;
1304
1305         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1306         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1307         return (ndlp->nlp_state);
1308 }
1309
1310 static uint32_t
1311 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1312                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1313 {
1314         struct lpfc_iocbq *cmdiocb;
1315
1316         cmdiocb = (struct lpfc_iocbq *) arg;
1317
1318         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1319         return (ndlp->nlp_state);
1320 }
1321
1322 static uint32_t
1323 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1324                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1325 {
1326         struct lpfc_iocbq *cmdiocb;
1327
1328         cmdiocb = (struct lpfc_iocbq *) arg;
1329
1330         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1331         return (ndlp->nlp_state);
1332 }
1333
1334 static uint32_t
1335 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1336                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1337 {
1338         struct lpfc_iocbq *cmdiocb;
1339
1340         cmdiocb = (struct lpfc_iocbq *) arg;
1341
1342         /* Treat like rcv logo */
1343         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1344         return (ndlp->nlp_state);
1345 }
1346
1347 static uint32_t
1348 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1349                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1350 {
1351         ndlp->nlp_state = NLP_STE_NPR_NODE;
1352         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1353         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1354         lpfc_disc_set_adisc(phba, ndlp);
1355
1356         return (ndlp->nlp_state);
1357 }
1358
1359 static uint32_t
1360 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1361                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1362 {
1363         struct lpfc_iocbq *cmdiocb;
1364
1365         cmdiocb = (struct lpfc_iocbq *) arg;
1366
1367         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1368         return (ndlp->nlp_state);
1369 }
1370
1371 static uint32_t
1372 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1373                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1374 {
1375         struct lpfc_iocbq *cmdiocb;
1376
1377         cmdiocb = (struct lpfc_iocbq *) arg;
1378
1379         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1380         return (ndlp->nlp_state);
1381 }
1382
1383 static uint32_t
1384 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1385                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1386 {
1387         struct lpfc_iocbq *cmdiocb;
1388
1389         cmdiocb = (struct lpfc_iocbq *) arg;
1390
1391         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1392         return (ndlp->nlp_state);
1393 }
1394
1395 static uint32_t
1396 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1397                             struct lpfc_nodelist * ndlp, void *arg,
1398                             uint32_t evt)
1399 {
1400         struct lpfc_iocbq *cmdiocb;
1401
1402         cmdiocb = (struct lpfc_iocbq *) arg;
1403
1404         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1405         return (ndlp->nlp_state);
1406 }
1407
1408 static uint32_t
1409 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1410                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1411 {
1412         struct lpfc_iocbq *cmdiocb;
1413
1414         cmdiocb = (struct lpfc_iocbq *) arg;
1415
1416         /* flush the target */
1417         spin_lock_irq(phba->host->host_lock);
1418         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1419                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1420         spin_unlock_irq(phba->host->host_lock);
1421
1422         /* Treat like rcv logo */
1423         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1424         return (ndlp->nlp_state);
1425 }
1426
1427 static uint32_t
1428 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1429                             struct lpfc_nodelist * ndlp, void *arg,
1430                             uint32_t evt)
1431 {
1432         ndlp->nlp_state = NLP_STE_NPR_NODE;
1433         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1434         spin_lock_irq(phba->host->host_lock);
1435         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1436         spin_unlock_irq(phba->host->host_lock);
1437         lpfc_disc_set_adisc(phba, ndlp);
1438         return (ndlp->nlp_state);
1439 }
1440
1441 static uint32_t
1442 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1443                             struct lpfc_nodelist * ndlp, void *arg,
1444                             uint32_t evt)
1445 {
1446         struct lpfc_iocbq *cmdiocb;
1447
1448         cmdiocb = (struct lpfc_iocbq *) arg;
1449
1450         /* Ignore PLOGI if we have an outstanding LOGO */
1451         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1452                 return (ndlp->nlp_state);
1453         }
1454
1455         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1456                 spin_lock_irq(phba->host->host_lock);
1457                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1458                 spin_unlock_irq(phba->host->host_lock);
1459                 return (ndlp->nlp_state);
1460         }
1461
1462         /* send PLOGI immediately, move to PLOGI issue state */
1463         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1464                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1465                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1466                         lpfc_issue_els_plogi(phba, ndlp, 0);
1467         }
1468         return (ndlp->nlp_state);
1469 }
1470
1471 static uint32_t
1472 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1473                             struct lpfc_nodelist * ndlp, void *arg,
1474                             uint32_t evt)
1475 {
1476         struct lpfc_iocbq     *cmdiocb;
1477         struct ls_rjt          stat;
1478
1479         cmdiocb = (struct lpfc_iocbq *) arg;
1480
1481         memset(&stat, 0, sizeof (struct ls_rjt));
1482         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1483         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1484         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1485
1486         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1487                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1488                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1489                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1490                         lpfc_issue_els_adisc(phba, ndlp, 0);
1491                 } else {
1492                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1493                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1494                         lpfc_issue_els_plogi(phba, ndlp, 0);
1495                 }
1496         }
1497         return (ndlp->nlp_state);
1498 }
1499
1500 static uint32_t
1501 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1502                             struct lpfc_nodelist * ndlp, void *arg,
1503                             uint32_t evt)
1504 {
1505         struct lpfc_iocbq     *cmdiocb;
1506
1507         cmdiocb = (struct lpfc_iocbq *) arg;
1508
1509         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1510         return (ndlp->nlp_state);
1511 }
1512
1513 static uint32_t
1514 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1515                             struct lpfc_nodelist * ndlp, void *arg,
1516                             uint32_t evt)
1517 {
1518         struct lpfc_iocbq     *cmdiocb;
1519
1520         cmdiocb = (struct lpfc_iocbq *) arg;
1521
1522         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1523
1524         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1525                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1526                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1527                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1528                         lpfc_issue_els_adisc(phba, ndlp, 0);
1529                 } else {
1530                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1531                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1532                         lpfc_issue_els_plogi(phba, ndlp, 0);
1533                 }
1534         }
1535         return (ndlp->nlp_state);
1536 }
1537
1538 static uint32_t
1539 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1540                             struct lpfc_nodelist * ndlp, void *arg,
1541                             uint32_t evt)
1542 {
1543         struct lpfc_iocbq     *cmdiocb;
1544
1545         cmdiocb = (struct lpfc_iocbq *) arg;
1546
1547         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1548
1549         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1550                 if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
1551                         return (ndlp->nlp_state);
1552                 } else {
1553                         spin_lock_irq(phba->host->host_lock);
1554                         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1555                         spin_unlock_irq(phba->host->host_lock);
1556                         del_timer_sync(&ndlp->nlp_delayfunc);
1557                         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1558                                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1559                 }
1560         }
1561
1562         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1563         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1564         lpfc_issue_els_plogi(phba, ndlp, 0);
1565         return (ndlp->nlp_state);
1566 }
1567
1568 static uint32_t
1569 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1570                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1571 {
1572         lpfc_unreg_rpi(phba, ndlp);
1573         /* This routine does nothing, just return the current state */
1574         return (ndlp->nlp_state);
1575 }
1576
1577 static uint32_t
1578 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1579                             struct lpfc_nodelist * ndlp, void *arg,
1580                             uint32_t evt)
1581 {
1582         LPFC_MBOXQ_t *pmb;
1583         MAILBOX_t *mb;
1584
1585         pmb = (LPFC_MBOXQ_t *) arg;
1586         mb = &pmb->mb;
1587
1588         ndlp->nlp_rpi = mb->un.varWords[0];
1589
1590         return (ndlp->nlp_state);
1591 }
1592
1593 static uint32_t
1594 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1595                             struct lpfc_nodelist * ndlp, void *arg,
1596                             uint32_t evt)
1597 {
1598         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1599         return (NLP_STE_FREED_NODE);
1600 }
1601
1602 static uint32_t
1603 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1604                             struct lpfc_nodelist * ndlp, void *arg,
1605                             uint32_t evt)
1606 {
1607         spin_lock_irq(phba->host->host_lock);
1608         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1609         spin_unlock_irq(phba->host->host_lock);
1610         return (ndlp->nlp_state);
1611 }
1612
1613
1614 /* This next section defines the NPort Discovery State Machine */
1615
1616 /* There are 4 different double linked lists nodelist entries can reside on.
1617  * The plogi list and adisc list are used when Link Up discovery or RSCN
1618  * processing is needed. Each list holds the nodes that we will send PLOGI
1619  * or ADISC on. These lists will keep track of what nodes will be effected
1620  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1621  * The unmapped_list will contain all nodes that we have successfully logged
1622  * into at the Fibre Channel level. The mapped_list will contain all nodes
1623  * that are mapped FCP targets.
1624  */
1625 /*
1626  * The bind list is a list of undiscovered (potentially non-existent) nodes
1627  * that we have saved binding information on. This information is used when
1628  * nodes transition from the unmapped to the mapped list.
1629  */
1630 /* For UNUSED_NODE state, the node has just been allocated .
1631  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1632  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1633  * and put on the unmapped list. For ADISC processing, the node is taken off
1634  * the ADISC list and placed on either the mapped or unmapped list (depending
1635  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1636  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1637  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1638  * node, the node is taken off the unmapped list. The binding list is checked
1639  * for a valid binding, or a binding is automatically assigned. If binding
1640  * assignment is unsuccessful, the node is left on the unmapped list. If
1641  * binding assignment is successful, the associated binding list entry (if
1642  * any) is removed, and the node is placed on the mapped list.
1643  */
1644 /*
1645  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1646  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1647  * expire, all effected nodes will receive a DEVICE_RM event.
1648  */
1649 /*
1650  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1651  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1652  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1653  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1654  * we will first process the ADISC list.  32 entries are processed initially and
1655  * ADISC is initited for each one.  Completions / Events for each node are
1656  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1657  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1658  * waiting, and the ADISC list count is identically 0, then we are done. For
1659  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1660  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1661  * list.  32 entries are processed initially and PLOGI is initited for each one.
1662  * Completions / Events for each node are funnelled thru the state machine.  As
1663  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1664  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1665  * indentically 0, then we are done. We have now completed discovery / RSCN
1666  * handling. Upon completion, ALL nodes should be on either the mapped or
1667  * unmapped lists.
1668  */
1669
1670 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1671      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1672         /* Action routine                  Event       Current State  */
1673         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1674         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1675         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1676         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1677         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1678         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1679         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1680         lpfc_disc_illegal,              /* CMPL_PRLI       */
1681         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1682         lpfc_disc_illegal,              /* CMPL_ADISC      */
1683         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1684         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1685         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1686
1687         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1688         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1689         lpfc_rcv_els_plogi_issue,       /* RCV_LOGO        */
1690         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1691         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1692         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1693         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1694         lpfc_disc_illegal,              /* CMPL_PRLI       */
1695         lpfc_disc_illegal,              /* CMPL_LOGO       */
1696         lpfc_disc_illegal,              /* CMPL_ADISC      */
1697         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1698         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1699         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1700
1701         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1702         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1703         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1704         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1705         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1706         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1707         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1708         lpfc_disc_illegal,              /* CMPL_PRLI       */
1709         lpfc_disc_illegal,              /* CMPL_LOGO       */
1710         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1711         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1712         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1713         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1714
1715         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1716         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1717         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1718         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1719         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1720         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1721         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1722         lpfc_disc_illegal,              /* CMPL_PRLI       */
1723         lpfc_disc_illegal,              /* CMPL_LOGO       */
1724         lpfc_disc_illegal,              /* CMPL_ADISC      */
1725         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1726         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1727         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1728
1729         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1730         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1731         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1732         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1733         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1734         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1735         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1736         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1737         lpfc_disc_illegal,              /* CMPL_LOGO       */
1738         lpfc_disc_illegal,              /* CMPL_ADISC      */
1739         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1740         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1741         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1742
1743         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1744         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1745         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1746         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1747         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1748         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1749         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1750         lpfc_disc_illegal,              /* CMPL_PRLI       */
1751         lpfc_disc_illegal,              /* CMPL_LOGO       */
1752         lpfc_disc_illegal,              /* CMPL_ADISC      */
1753         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1754         lpfc_disc_illegal,              /* DEVICE_RM       */
1755         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1756
1757         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1758         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1759         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1760         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1761         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1762         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1763         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1764         lpfc_disc_illegal,              /* CMPL_PRLI       */
1765         lpfc_disc_illegal,              /* CMPL_LOGO       */
1766         lpfc_disc_illegal,              /* CMPL_ADISC      */
1767         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1768         lpfc_disc_illegal,              /* DEVICE_RM       */
1769         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1770
1771         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1772         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1773         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1774         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1775         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1776         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1777         lpfc_disc_noop,                 /* CMPL_PLOGI      */
1778         lpfc_disc_noop,                 /* CMPL_PRLI       */
1779         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1780         lpfc_disc_noop,                 /* CMPL_ADISC      */
1781         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1782         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1783         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1784 };
1785
1786 int
1787 lpfc_disc_state_machine(struct lpfc_hba * phba,
1788                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1789 {
1790         uint32_t cur_state, rc;
1791         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1792                          uint32_t);
1793
1794         ndlp->nlp_disc_refcnt++;
1795         cur_state = ndlp->nlp_state;
1796
1797         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1798         lpfc_printf_log(phba,
1799                         KERN_INFO,
1800                         LOG_DISCOVERY,
1801                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1802                         "Data: x%x\n",
1803                         phba->brd_no,
1804                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1805
1806         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1807         rc = (func) (phba, ndlp, arg, evt);
1808
1809         /* DSM out state <rc> on NPort <nlp_DID> */
1810         lpfc_printf_log(phba,
1811                        KERN_INFO,
1812                        LOG_DISCOVERY,
1813                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1814                        phba->brd_no,
1815                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1816
1817         ndlp->nlp_disc_refcnt--;
1818
1819         /* Check to see if ndlp removal is deferred */
1820         if ((ndlp->nlp_disc_refcnt == 0)
1821             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1822                 spin_lock_irq(phba->host->host_lock);
1823                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1824                 spin_unlock_irq(phba->host->host_lock);
1825                 lpfc_nlp_remove(phba, ndlp);
1826                 return (NLP_STE_FREED_NODE);
1827         }
1828         if (rc == NLP_STE_FREED_NODE)
1829                 return (NLP_STE_FREED_NODE);
1830         ndlp->nlp_state = rc;
1831         return (rc);
1832 }