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 int
  59 lpfc_check_sparm(struct lpfc_hba * phba,
  60                  struct lpfc_nodelist * ndlp, struct serv_parm * sp,
  61                  uint32_t class)
  62 {
  63         volatile struct serv_parm *hsp = &phba->fc_sparam;
  64         uint16_t hsp_value, ssp_value = 0;
  65
  66         /*
  67          * The receive data field size and buffer-to-buffer receive data field
  68          * size entries are 16 bits but are represented as two 8-bit fields in
  69          * the driver data structure to account for rsvd bits and other control
  70          * bits.  Reconstruct and compare the fields as a 16-bit values before
  71          * correcting the byte values.
  72          */
  73         if (sp->cls1.classValid) {
  74                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  75                                 hsp->cls1.rcvDataSizeLsb;
  76                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  77                                 sp->cls1.rcvDataSizeLsb;
  78                 if (ssp_value > hsp_value) {
  79                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  80                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  81                 }
  82         } else if (class == CLASS1) {
  83                 return 0;
  84         }
  85
  86         if (sp->cls2.classValid) {
  87                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  88                                 hsp->cls2.rcvDataSizeLsb;
  89                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  90                                 sp->cls2.rcvDataSizeLsb;
  91                 if (ssp_value > hsp_value) {
  92                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  93                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  94                 }
  95         } else if (class == CLASS2) {
  96                 return 0;
  97         }
  98
  99         if (sp->cls3.classValid) {
 100                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 101                                 hsp->cls3.rcvDataSizeLsb;
 102                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 103                                 sp->cls3.rcvDataSizeLsb;
 104                 if (ssp_value > hsp_value) {
 105                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 106                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 107                 }
 108         } else if (class == CLASS3) {
 109                 return 0;
 110         }
 111
 112         /*
 113          * Preserve the upper four bits of the MSB from the PLOGI response.
 114          * These bits contain the Buffer-to-Buffer State Change Number
 115          * from the target and need to be passed to the FW.
 116          */
 117         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 118         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 119         if (ssp_value > hsp_value) {
 120                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 121                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 122                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 123         }
 124
 125         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 126         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 127         return 1;
 128 }
 129
 130 static void *
 131 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 132                       struct lpfc_iocbq *cmdiocb,
 133                       struct lpfc_iocbq *rspiocb)
 134 {
 135         struct lpfc_dmabuf *pcmd, *prsp;
 136         uint32_t *lp;
 137         void     *ptr = NULL;
 138         IOCB_t   *irsp;
 139
 140         irsp = &rspiocb->iocb;
 141         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 142
 143         /* For lpfc_els_abort, context2 could be zero'ed to delay
 144          * freeing associated memory till after ABTS completes.
 145          */
 146         if (pcmd) {
 147                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 148                                        list);
 149                 if (prsp) {
 150                         lp = (uint32_t *) prsp->virt;
 151                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 152                 }
 153         }
 154         else {
 155                 /* Force ulpStatus error since we are returning NULL ptr */
 156                 if (!(irsp->ulpStatus)) {
 157                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 158                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 159                 }
 160                 ptr = NULL;
 161         }
 162         return ptr;
 163 }
 164
 165
 166 /*
 167  * Free resources / clean up outstanding I/Os
 168  * associated with a LPFC_NODELIST entry. This
 169  * routine effectively results in a "software abort".
 170  */
 171 int
 172 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 173         int send_abts)
 174 {
 175         struct lpfc_sli *psli;
 176         struct lpfc_sli_ring *pring;
 177         struct lpfc_iocbq *iocb, *next_iocb;
 178         IOCB_t *icmd;
 179         int    found = 0;
 180
 181         /* Abort outstanding I/O on NPort <nlp_DID> */
 182         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 183                         "%d:0201 Abort outstanding I/O on NPort x%x "
 184                         "Data: x%x x%x x%x\n",
 185                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 186                         ndlp->nlp_state, ndlp->nlp_rpi);
 187
 188         psli = &phba->sli;
 189         pring = &psli->ring[LPFC_ELS_RING];
 190
 191         /* First check the txq */
 192         do {
 193                 found = 0;
 194                 spin_lock_irq(phba->host->host_lock);
 195                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 196                         /* Check to see if iocb matches the nport we are looking
 197                            for */
 198                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 199                                 found = 1;
 200                                 /* It matches, so deque and call compl with an
 201                                    error */
 202                                 list_del(&iocb->list);
 203                                 pring->txq_cnt--;
 204                                 if (iocb->iocb_cmpl) {
 205                                         icmd = &iocb->iocb;
 206                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 207                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 208                                         spin_unlock_irq(phba->host->host_lock);
 209                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 210                                         spin_lock_irq(phba->host->host_lock);
 211                                 } else
 212                                         lpfc_sli_release_iocbq(phba, iocb);
 213                                 break;
 214                         }
 215                 }
 216                 spin_unlock_irq(phba->host->host_lock);
 217         } while (found);
 218
 219         /* Everything on txcmplq will be returned by firmware
 220          * with a no rpi / linkdown / abort error.  For ring 0,
 221          * ELS discovery, we want to get rid of it right here.
 222          */
 223         /* Next check the txcmplq */
 224         do {
 225                 found = 0;
 226                 spin_lock_irq(phba->host->host_lock);
 227                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 228                                          list) {
 229                         /* Check to see if iocb matches the nport we are looking
 230                            for */
 231                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 232                                 found = 1;
 233                                 /* It matches, so deque and call compl with an
 234                                    error */
 235                                 list_del(&iocb->list);
 236                                 pring->txcmplq_cnt--;
 237
 238                                 icmd = &iocb->iocb;
 239                                 /* If the driver is completing an ELS
 240                                  * command early, flush it out of the firmware.
 241                                  */
 242                                 if (send_abts &&
 243                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 244                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 245                                         lpfc_sli_issue_abort_iotag32(phba,
 246                                                              pring, iocb);
 247                                 }
 248                                 if (iocb->iocb_cmpl) {
 249                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 250                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 251                                         spin_unlock_irq(phba->host->host_lock);
 252                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 253                                         spin_lock_irq(phba->host->host_lock);
 254                                 } else
 255                                         lpfc_sli_release_iocbq(phba, iocb);
 256                                 break;
 257                         }
 258                 }
 259                 spin_unlock_irq(phba->host->host_lock);
 260         } while(found);
 261
 262         /* If we are delaying issuing an ELS command, cancel it */
 263         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
 264                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 265                 del_timer_sync(&ndlp->nlp_delayfunc);
 266                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 267                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 268         }
 269         return 0;
 270 }
 271
 272 static int
 273 lpfc_rcv_plogi(struct lpfc_hba * phba,
 274                       struct lpfc_nodelist * ndlp,
 275                       struct lpfc_iocbq *cmdiocb)
 276 {
 277         struct lpfc_dmabuf *pcmd;
 278         uint32_t *lp;
 279         IOCB_t *icmd;
 280         struct serv_parm *sp;
 281         LPFC_MBOXQ_t *mbox;
 282         struct ls_rjt stat;
 283         int rc;
 284
 285         memset(&stat, 0, sizeof (struct ls_rjt));
 286         if (phba->hba_state <= LPFC_FLOGI) {
 287                 /* Before responding to PLOGI, check for pt2pt mode.
 288                  * If we are pt2pt, with an outstanding FLOGI, abort
 289                  * the FLOGI and resend it first.
 290                  */
 291                 if (phba->fc_flag & FC_PT2PT) {
 292                         lpfc_els_abort_flogi(phba);
 293                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 294                                 /* If the other side is supposed to initiate
 295                                  * the PLOGI anyway, just ACC it now and
 296                                  * move on with discovery.
 297                                  */
 298                                 phba->fc_edtov = FF_DEF_EDTOV;
 299                                 phba->fc_ratov = FF_DEF_RATOV;
 300                                 /* Start discovery - this should just do
 301                                    CLEAR_LA */
 302                                 lpfc_disc_start(phba);
 303                         }
 304                         else {
 305                                 lpfc_initial_flogi(phba);
 306                         }
 307                 }
 308                 else {
 309                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 310                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 311                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 312                                             ndlp);
 313                         return 0;
 314                 }
 315         }
 316         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 317         lp = (uint32_t *) pcmd->virt;
 318         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 319         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 320                 /* Reject this request because invalid parameters */
 321                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 322                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 323                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 324                 return 0;
 325         }
 326         icmd = &cmdiocb->iocb;
 327
 328         /* PLOGI chkparm OK */
 329         lpfc_printf_log(phba,
 330                         KERN_INFO,
 331                         LOG_ELS,
 332                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 333                         phba->brd_no,
 334                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 335                         ndlp->nlp_rpi);
 336
 337         if ((phba->cfg_fcp_class == 2) &&
 338             (sp->cls2.classValid)) {
 339                 ndlp->nlp_fcp_info |= CLASS2;
 340         } else {
 341                 ndlp->nlp_fcp_info |= CLASS3;
 342         }
 343         ndlp->nlp_class_sup = 0;
 344         if (sp->cls1.classValid)
 345                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 346         if (sp->cls2.classValid)
 347                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 348         if (sp->cls3.classValid)
 349                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 350         if (sp->cls4.classValid)
 351                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 352         ndlp->nlp_maxframe =
 353                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 354
 355         /* no need to reg_login if we are already in one of these states */
 356         switch(ndlp->nlp_state) {
 357         case  NLP_STE_NPR_NODE:
 358                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 359                         break;
 360         case  NLP_STE_REG_LOGIN_ISSUE:
 361         case  NLP_STE_PRLI_ISSUE:
 362         case  NLP_STE_UNMAPPED_NODE:
 363         case  NLP_STE_MAPPED_NODE:
 364                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 365                 return 1;
 366         }
 367
 368         if ((phba->fc_flag & FC_PT2PT)
 369             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 370                 /* rcv'ed PLOGI decides what our NPortId will be */
 371                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 372                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 373                 if (mbox == NULL)
 374                         goto out;
 375                 lpfc_config_link(phba, mbox);
 376                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 377                 rc = lpfc_sli_issue_mbox
 378                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 379                 if (rc == MBX_NOT_FINISHED) {
 380                         mempool_free( mbox, phba->mbox_mem_pool);
 381                         goto out;
 382                 }
 383
 384                 lpfc_can_disctmo(phba);
 385         }
 386         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 387         if (mbox == NULL)
 388                 goto out;
 389
 390         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 391                            (uint8_t *) sp, mbox, 0)) {
 392                 mempool_free( mbox, phba->mbox_mem_pool);
 393                 goto out;
 394         }
 395
 396         /* ACC PLOGI rsp command needs to execute first,
 397          * queue this mbox command to be processed later.
 398          */
 399         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 400         mbox->context2  = ndlp;
 401         ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
 402
 403         /* If there is an outstanding PLOGI issued, abort it before
 404          * sending ACC rsp to PLOGI recieved.
 405          */
 406         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 407                 /* software abort outstanding PLOGI */
 408                 lpfc_els_abort(phba, ndlp, 1);
 409         }
 410         ndlp->nlp_flag |= NLP_RCV_PLOGI;
 411         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 412         return 1;
 413
 414 out:
 415         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 416         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 417         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 418         return 0;
 419 }
 420
 421 static int
 422 lpfc_rcv_padisc(struct lpfc_hba * phba,
 423                 struct lpfc_nodelist * ndlp,
 424                 struct lpfc_iocbq *cmdiocb)
 425 {
 426         struct lpfc_dmabuf *pcmd;
 427         struct serv_parm *sp;
 428         struct lpfc_name *pnn, *ppn;
 429         struct ls_rjt stat;
 430         ADISC *ap;
 431         IOCB_t *icmd;
 432         uint32_t *lp;
 433         uint32_t cmd;
 434
 435         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 436         lp = (uint32_t *) pcmd->virt;
 437
 438         cmd = *lp++;
 439         if (cmd == ELS_CMD_ADISC) {
 440                 ap = (ADISC *) lp;
 441                 pnn = (struct lpfc_name *) & ap->nodeName;
 442                 ppn = (struct lpfc_name *) & ap->portName;
 443         } else {
 444                 sp = (struct serv_parm *) lp;
 445                 pnn = (struct lpfc_name *) & sp->nodeName;
 446                 ppn = (struct lpfc_name *) & sp->portName;
 447         }
 448
 449         icmd = &cmdiocb->iocb;
 450         if ((icmd->ulpStatus == 0) &&
 451             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 452                 if (cmd == ELS_CMD_ADISC) {
 453                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 454                 }
 455                 else {
 456                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 457                                 NULL, 0);
 458                 }
 459                 return 1;
 460         }
 461         /* Reject this request because invalid parameters */
 462         stat.un.b.lsRjtRsvd0 = 0;
 463         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 464         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 465         stat.un.b.vendorUnique = 0;
 466         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 467
 468         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 469         /* 1 sec timeout */
 470         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 471
 472         spin_lock_irq(phba->host->host_lock);
 473         ndlp->nlp_flag |= NLP_DELAY_TMO;
 474         spin_unlock_irq(phba->host->host_lock);
 475         ndlp->nlp_state = NLP_STE_NPR_NODE;
 476         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 477         return 0;
 478 }
 479
 480 static int
 481 lpfc_rcv_logo(struct lpfc_hba * phba,
 482                       struct lpfc_nodelist * ndlp,
 483                       struct lpfc_iocbq *cmdiocb)
 484 {
 485         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 486         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 487          * PLOGIs during LOGO storms from a device.
 488          */
 489         ndlp->nlp_flag |= NLP_LOGO_ACC;
 490         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 491
 492         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 493                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 494                 /* Only try to re-login if this is NOT a Fabric Node */
 495                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 496                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 497                 spin_lock_irq(phba->host->host_lock);
 498                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 499                 spin_unlock_irq(phba->host->host_lock);
 500
 501                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 502                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 503         } else {
 504                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 505                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 506         }
 507
 508         spin_lock_irq(phba->host->host_lock);
 509         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 510         spin_unlock_irq(phba->host->host_lock);
 511         /* The driver has to wait until the ACC completes before it continues
 512          * processing the LOGO.  The action will resume in
 513          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 514          * unreg_login, the driver waits so the ACC does not get aborted.
 515          */
 516         return 0;
 517 }
 518
 519 static void
 520 lpfc_rcv_prli(struct lpfc_hba * phba,
 521                       struct lpfc_nodelist * ndlp,
 522                       struct lpfc_iocbq *cmdiocb)
 523 {
 524         struct lpfc_dmabuf *pcmd;
 525         uint32_t *lp;
 526         PRLI *npr;
 527         struct fc_rport *rport = ndlp->rport;
 528         u32 roles;
 529
 530         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 531         lp = (uint32_t *) pcmd->virt;
 532         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 533
 534         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 535         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 536         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 537             (npr->prliType == PRLI_FCP_TYPE)) {
 538                 if (npr->initiatorFunc)
 539                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 540                 if (npr->targetFunc)
 541                         ndlp->nlp_type |= NLP_FCP_TARGET;
 542                 if (npr->Retry)
 543                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 544         }
 545         if (rport) {
 546                 /* We need to update the rport role values */
 547                 roles = FC_RPORT_ROLE_UNKNOWN;
 548                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 549                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 550                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 551                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 552                 fc_remote_port_rolechg(rport, roles);
 553         }
 554 }
 555
 556 static uint32_t
 557 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 558                       struct lpfc_nodelist * ndlp)
 559 {
 560         /* Check config parameter use-adisc or FCP-2 */
 561         if ((phba->cfg_use_adisc == 0) &&
 562                 !(phba->fc_flag & FC_RSCN_MODE)) {
 563                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 564                         return 0;
 565         }
 566         spin_lock_irq(phba->host->host_lock);
 567         ndlp->nlp_flag |= NLP_NPR_ADISC;
 568         spin_unlock_irq(phba->host->host_lock);
 569         return 1;
 570 }
 571
 572 static uint32_t
 573 lpfc_disc_illegal(struct lpfc_hba * phba,
 574                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 575 {
 576         lpfc_printf_log(phba,
 577                         KERN_ERR,
 578                         LOG_DISCOVERY,
 579                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 580                         "state x%x Data: x%x x%x\n",
 581                         phba->brd_no,
 582                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 583                         ndlp->nlp_flag);
 584         return ndlp->nlp_state;
 585 }
 586
 587 /* Start of Discovery State Machine routines */
 588
 589 static uint32_t
 590 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 591                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 592 {
 593         struct lpfc_iocbq *cmdiocb;
 594
 595         cmdiocb = (struct lpfc_iocbq *) arg;
 596
 597         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 598                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 599                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 600                 return ndlp->nlp_state;
 601         }
 602         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 603         return NLP_STE_FREED_NODE;
 604 }
 605
 606 static uint32_t
 607 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 608                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 609 {
 610         lpfc_issue_els_logo(phba, ndlp, 0);
 611         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 612         return ndlp->nlp_state;
 613 }
 614
 615 static uint32_t
 616 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 617                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 618 {
 619         struct lpfc_iocbq     *cmdiocb;
 620
 621         cmdiocb = (struct lpfc_iocbq *) arg;
 622
 623         spin_lock_irq(phba->host->host_lock);
 624         ndlp->nlp_flag |= NLP_LOGO_ACC;
 625         spin_unlock_irq(phba->host->host_lock);
 626         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 627         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 628
 629         return ndlp->nlp_state;
 630 }
 631
 632 static uint32_t
 633 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 634                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 635 {
 636         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 637         return NLP_STE_FREED_NODE;
 638 }
 639
 640 static uint32_t
 641 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 642                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 643 {
 644         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 645         return NLP_STE_FREED_NODE;
 646 }
 647
 648 static uint32_t
 649 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 650                            void *arg, uint32_t evt)
 651 {
 652         struct lpfc_iocbq *cmdiocb = arg;
 653         struct lpfc_dmabuf *pcmd;
 654         struct serv_parm *sp;
 655         uint32_t *lp;
 656         struct ls_rjt stat;
 657         int port_cmp;
 658
 659         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 660         lp = (uint32_t *) pcmd->virt;
 661         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 662
 663         memset(&stat, 0, sizeof (struct ls_rjt));
 664
 665         /* For a PLOGI, we only accept if our portname is less
 666          * than the remote portname.
 667          */
 668         phba->fc_stat.elsLogiCol++;
 669         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 670                           sizeof (struct lpfc_name));
 671
 672         if (port_cmp >= 0) {
 673                 /* Reject this request because the remote node will accept
 674                    ours */
 675                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 676                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 677                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 678         }
 679         else {
 680                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 681         } /* if our portname was less */
 682
 683         return ndlp->nlp_state;
 684 }
 685
 686 static uint32_t
 687 lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
 688                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 689 {
 690         struct lpfc_iocbq     *cmdiocb;
 691
 692         cmdiocb = (struct lpfc_iocbq *) arg;
 693
 694         /* software abort outstanding PLOGI */
 695         lpfc_els_abort(phba, ndlp, 1);
 696
 697         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 698         return ndlp->nlp_state;
 699 }
 700
 701 static uint32_t
 702 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 703                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 704 {
 705         struct lpfc_iocbq     *cmdiocb;
 706
 707         cmdiocb = (struct lpfc_iocbq *) arg;
 708
 709         /* software abort outstanding PLOGI */
 710         lpfc_els_abort(phba, ndlp, 1);
 711         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 712         spin_lock_irq(phba->host->host_lock);
 713         ndlp->nlp_flag |= NLP_DELAY_TMO;
 714         spin_unlock_irq(phba->host->host_lock);
 715
 716         if (evt == NLP_EVT_RCV_LOGO) {
 717                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 718         }
 719         else {
 720                 lpfc_issue_els_logo(phba, ndlp, 0);
 721         }
 722
 723         /* Put ndlp in npr list set plogi timer for 1 sec */
 724         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 725         ndlp->nlp_state = NLP_STE_NPR_NODE;
 726         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 727
 728         return ndlp->nlp_state;
 729 }
 730
 731 static uint32_t
 732 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 733                             struct lpfc_nodelist * ndlp, void *arg,
 734                             uint32_t evt)
 735 {
 736         struct lpfc_iocbq *cmdiocb, *rspiocb;
 737         struct lpfc_dmabuf *pcmd, *prsp;
 738         uint32_t *lp;
 739         IOCB_t *irsp;
 740         struct serv_parm *sp;
 741         LPFC_MBOXQ_t *mbox;
 742
 743         cmdiocb = (struct lpfc_iocbq *) arg;
 744         rspiocb = cmdiocb->context_un.rsp_iocb;
 745
 746         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 747                 return ndlp->nlp_state;
 748         }
 749
 750         irsp = &rspiocb->iocb;
 751
 752         if (irsp->ulpStatus)
 753                 goto out;
 754
 755         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 756
 757         prsp = list_get_first(&pcmd->list,
 758                               struct lpfc_dmabuf,
 759                               list);
 760         lp = (uint32_t *) prsp->virt;
 761
 762         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 763         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 764                 goto out;
 765
 766         /* PLOGI chkparm OK */
 767         lpfc_printf_log(phba,
 768                         KERN_INFO,
 769                         LOG_ELS,
 770                         "%d:0121 PLOGI chkparm OK "
 771                         "Data: x%x x%x x%x x%x\n",
 772                         phba->brd_no,
 773                         ndlp->nlp_DID, ndlp->nlp_state,
 774                         ndlp->nlp_flag, ndlp->nlp_rpi);
 775
 776         if ((phba->cfg_fcp_class == 2) &&
 777             (sp->cls2.classValid)) {
 778                 ndlp->nlp_fcp_info |= CLASS2;
 779         } else {
 780                 ndlp->nlp_fcp_info |= CLASS3;
 781         }
 782         ndlp->nlp_class_sup = 0;
 783         if (sp->cls1.classValid)
 784                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 785         if (sp->cls2.classValid)
 786                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 787         if (sp->cls3.classValid)
 788                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 789         if (sp->cls4.classValid)
 790                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 791         ndlp->nlp_maxframe =
 792                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 793                 sp->cmn.bbRcvSizeLsb;
 794
 795         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 796                                    GFP_KERNEL)))
 797                 goto out;
 798
 799         lpfc_unreg_rpi(phba, ndlp);
 800         if (lpfc_reg_login
 801             (phba, irsp->un.elsreq64.remoteID,
 802              (uint8_t *) sp, mbox, 0) == 0) {
 803                 /* set_slim mailbox command needs to
 804                  * execute first, queue this command to
 805                  * be processed later.
 806                  */
 807                 switch(ndlp->nlp_DID) {
 808                 case NameServer_DID:
 809                         mbox->mbox_cmpl =
 810                                 lpfc_mbx_cmpl_ns_reg_login;
 811                         break;
 812                 case FDMI_DID:
 813                         mbox->mbox_cmpl =
 814                                 lpfc_mbx_cmpl_fdmi_reg_login;
 815                         break;
 816                 default:
 817                         mbox->mbox_cmpl =
 818                                 lpfc_mbx_cmpl_reg_login;
 819                 }
 820                 mbox->context2 = ndlp;
 821                 if (lpfc_sli_issue_mbox(phba, mbox,
 822                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 823                     != MBX_NOT_FINISHED) {
 824                         ndlp->nlp_state =
 825                                 NLP_STE_REG_LOGIN_ISSUE;
 826                         lpfc_nlp_list(phba, ndlp,
 827                                       NLP_REGLOGIN_LIST);
 828                         return ndlp->nlp_state;
 829                 }
 830                 mempool_free(mbox, phba->mbox_mem_pool);
 831         } else {
 832                 mempool_free(mbox, phba->mbox_mem_pool);
 833         }
 834
 835
 836  out:
 837         /* Free this node since the driver cannot login or has the wrong
 838            sparm */
 839         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 840         return NLP_STE_FREED_NODE;
 841 }
 842
 843 static uint32_t
 844 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 845                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 846 {
 847         /* software abort outstanding PLOGI */
 848         lpfc_els_abort(phba, ndlp, 1);
 849
 850         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 851         return NLP_STE_FREED_NODE;
 852 }
 853
 854 static uint32_t
 855 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 856                             struct lpfc_nodelist * ndlp, void *arg,
 857                             uint32_t evt)
 858 {
 859         /* software abort outstanding PLOGI */
 860         lpfc_els_abort(phba, ndlp, 1);
 861
 862         ndlp->nlp_state = NLP_STE_NPR_NODE;
 863         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 864         spin_lock_irq(phba->host->host_lock);
 865         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 866         spin_unlock_irq(phba->host->host_lock);
 867
 868         return ndlp->nlp_state;
 869 }
 870
 871 static uint32_t
 872 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 873                             struct lpfc_nodelist * ndlp, void *arg,
 874                             uint32_t evt)
 875 {
 876         struct lpfc_iocbq *cmdiocb;
 877
 878         /* software abort outstanding ADISC */
 879         lpfc_els_abort(phba, ndlp, 1);
 880
 881         cmdiocb = (struct lpfc_iocbq *) arg;
 882
 883         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 884                 return ndlp->nlp_state;
 885         }
 886         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 887         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 888         lpfc_issue_els_plogi(phba, ndlp, 0);
 889
 890         return ndlp->nlp_state;
 891 }
 892
 893 static uint32_t
 894 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 895                             struct lpfc_nodelist * ndlp, void *arg,
 896                             uint32_t evt)
 897 {
 898         struct lpfc_iocbq *cmdiocb;
 899
 900         cmdiocb = (struct lpfc_iocbq *) arg;
 901
 902         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 903         return ndlp->nlp_state;
 904 }
 905
 906 static uint32_t
 907 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 908                             struct lpfc_nodelist * ndlp, void *arg,
 909                             uint32_t evt)
 910 {
 911         struct lpfc_iocbq *cmdiocb;
 912
 913         cmdiocb = (struct lpfc_iocbq *) arg;
 914
 915         /* software abort outstanding ADISC */
 916         lpfc_els_abort(phba, ndlp, 0);
 917
 918         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 919         return ndlp->nlp_state;
 920 }
 921
 922 static uint32_t
 923 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 924                             struct lpfc_nodelist * ndlp, void *arg,
 925                             uint32_t evt)
 926 {
 927         struct lpfc_iocbq *cmdiocb;
 928
 929         cmdiocb = (struct lpfc_iocbq *) arg;
 930
 931         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 932         return ndlp->nlp_state;
 933 }
 934
 935 static uint32_t
 936 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 937                             struct lpfc_nodelist * ndlp, void *arg,
 938                             uint32_t evt)
 939 {
 940         struct lpfc_iocbq *cmdiocb;
 941
 942         cmdiocb = (struct lpfc_iocbq *) arg;
 943
 944         /* Treat like rcv logo */
 945         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 946         return ndlp->nlp_state;
 947 }
 948
 949 static uint32_t
 950 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 951                             struct lpfc_nodelist * ndlp, void *arg,
 952                             uint32_t evt)
 953 {
 954         struct lpfc_iocbq *cmdiocb, *rspiocb;
 955         IOCB_t *irsp;
 956         ADISC *ap;
 957
 958         cmdiocb = (struct lpfc_iocbq *) arg;
 959         rspiocb = cmdiocb->context_un.rsp_iocb;
 960
 961         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 962         irsp = &rspiocb->iocb;
 963
 964         if ((irsp->ulpStatus) ||
 965                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 966                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 967                 /* 1 sec timeout */
 968                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 969                 spin_lock_irq(phba->host->host_lock);
 970                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 971                 spin_unlock_irq(phba->host->host_lock);
 972
 973                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 974                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 975
 976                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 977                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 978                 lpfc_unreg_rpi(phba, ndlp);
 979                 return ndlp->nlp_state;
 980         }
 981         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 982                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 983                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 984         } else {
 985                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 986                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 987         }
 988         return ndlp->nlp_state;
 989 }
 990
 991 static uint32_t
 992 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 993                             struct lpfc_nodelist * ndlp, void *arg,
 994                             uint32_t evt)
 995 {
 996         /* software abort outstanding ADISC */
 997         lpfc_els_abort(phba, ndlp, 1);
 998
 999         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1000         return NLP_STE_FREED_NODE;
1001 }
1002
1003 static uint32_t
1004 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
1005                             struct lpfc_nodelist * ndlp, void *arg,
1006                             uint32_t evt)
1007 {
1008         /* software abort outstanding ADISC */
1009         lpfc_els_abort(phba, ndlp, 1);
1010
1011         ndlp->nlp_state = NLP_STE_NPR_NODE;
1012         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1013         spin_lock_irq(phba->host->host_lock);
1014         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1015         ndlp->nlp_flag |= NLP_NPR_ADISC;
1016         spin_unlock_irq(phba->host->host_lock);
1017
1018         return ndlp->nlp_state;
1019 }
1020
1021 static uint32_t
1022 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1023                               struct lpfc_nodelist * ndlp, void *arg,
1024                               uint32_t evt)
1025 {
1026         struct lpfc_iocbq *cmdiocb;
1027
1028         cmdiocb = (struct lpfc_iocbq *) arg;
1029
1030         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1031         return ndlp->nlp_state;
1032 }
1033
1034 static uint32_t
1035 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1036                              struct lpfc_nodelist * ndlp, void *arg,
1037                              uint32_t evt)
1038 {
1039         struct lpfc_iocbq *cmdiocb;
1040
1041         cmdiocb = (struct lpfc_iocbq *) arg;
1042
1043         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1044         return ndlp->nlp_state;
1045 }
1046
1047 static uint32_t
1048 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1049                              struct lpfc_nodelist * ndlp, void *arg,
1050                              uint32_t evt)
1051 {
1052         struct lpfc_iocbq *cmdiocb;
1053
1054         cmdiocb = (struct lpfc_iocbq *) arg;
1055
1056         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1057         return ndlp->nlp_state;
1058 }
1059
1060 static uint32_t
1061 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1062                                struct lpfc_nodelist * ndlp, void *arg,
1063                                uint32_t evt)
1064 {
1065         struct lpfc_iocbq *cmdiocb;
1066
1067         cmdiocb = (struct lpfc_iocbq *) arg;
1068
1069         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1070         return ndlp->nlp_state;
1071 }
1072
1073 static uint32_t
1074 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1075                              struct lpfc_nodelist * ndlp, void *arg,
1076                              uint32_t evt)
1077 {
1078         struct lpfc_iocbq *cmdiocb;
1079
1080         cmdiocb = (struct lpfc_iocbq *) arg;
1081         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1082         return ndlp->nlp_state;
1083 }
1084
1085 static uint32_t
1086 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1087                                   struct lpfc_nodelist * ndlp,
1088                                   void *arg, uint32_t evt)
1089 {
1090         LPFC_MBOXQ_t *pmb;
1091         MAILBOX_t *mb;
1092         uint32_t did;
1093
1094         pmb = (LPFC_MBOXQ_t *) arg;
1095         mb = &pmb->mb;
1096         did = mb->un.varWords[1];
1097         if (mb->mbxStatus) {
1098                 /* RegLogin failed */
1099                 lpfc_printf_log(phba,
1100                                 KERN_ERR,
1101                                 LOG_DISCOVERY,
1102                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1103                                 phba->brd_no,
1104                                 did, mb->mbxStatus, phba->hba_state);
1105
1106                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1107                 spin_lock_irq(phba->host->host_lock);
1108                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1109                 spin_unlock_irq(phba->host->host_lock);
1110
1111                 lpfc_issue_els_logo(phba, ndlp, 0);
1112                 /* Put ndlp in npr list set plogi timer for 1 sec */
1113                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1114                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1115                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1116                 return ndlp->nlp_state;
1117         }
1118
1119         ndlp->nlp_rpi = mb->un.varWords[0];
1120
1121         /* Only if we are not a fabric nport do we issue PRLI */
1122         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1123                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1124                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1125                 lpfc_issue_els_prli(phba, ndlp, 0);
1126         } else {
1127                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1128                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1129         }
1130         return ndlp->nlp_state;
1131 }
1132
1133 static uint32_t
1134 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1135                               struct lpfc_nodelist * ndlp, void *arg,
1136                               uint32_t evt)
1137 {
1138         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1139         return NLP_STE_FREED_NODE;
1140 }
1141
1142 static uint32_t
1143 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1144                                struct lpfc_nodelist * ndlp, void *arg,
1145                                uint32_t evt)
1146 {
1147         ndlp->nlp_state = NLP_STE_NPR_NODE;
1148         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1149         spin_lock_irq(phba->host->host_lock);
1150         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1151         spin_unlock_irq(phba->host->host_lock);
1152         return ndlp->nlp_state;
1153 }
1154
1155 static uint32_t
1156 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1157                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1158 {
1159         struct lpfc_iocbq *cmdiocb;
1160
1161         cmdiocb = (struct lpfc_iocbq *) arg;
1162
1163         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1164         return ndlp->nlp_state;
1165 }
1166
1167 static uint32_t
1168 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1169                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1170 {
1171         struct lpfc_iocbq *cmdiocb;
1172
1173         cmdiocb = (struct lpfc_iocbq *) arg;
1174
1175         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1176         return ndlp->nlp_state;
1177 }
1178
1179 static uint32_t
1180 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1181                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1182 {
1183         struct lpfc_iocbq *cmdiocb;
1184
1185         cmdiocb = (struct lpfc_iocbq *) arg;
1186
1187         /* Software abort outstanding PRLI before sending acc */
1188         lpfc_els_abort(phba, ndlp, 1);
1189
1190         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1191         return ndlp->nlp_state;
1192 }
1193
1194 static uint32_t
1195 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1196                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1197 {
1198         struct lpfc_iocbq *cmdiocb;
1199
1200         cmdiocb = (struct lpfc_iocbq *) arg;
1201
1202         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1203         return ndlp->nlp_state;
1204 }
1205
1206 /* This routine is envoked when we rcv a PRLO request from a nport
1207  * we are logged into.  We should send back a PRLO rsp setting the
1208  * appropriate bits.
1209  * NEXT STATE = PRLI_ISSUE
1210  */
1211 static uint32_t
1212 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1213                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1214 {
1215         struct lpfc_iocbq *cmdiocb;
1216
1217         cmdiocb = (struct lpfc_iocbq *) arg;
1218         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1219         return ndlp->nlp_state;
1220 }
1221
1222 static uint32_t
1223 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1224                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1225 {
1226         struct lpfc_iocbq *cmdiocb, *rspiocb;
1227         IOCB_t *irsp;
1228         PRLI *npr;
1229
1230         cmdiocb = (struct lpfc_iocbq *) arg;
1231         rspiocb = cmdiocb->context_un.rsp_iocb;
1232         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1233
1234         irsp = &rspiocb->iocb;
1235         if (irsp->ulpStatus) {
1236                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1237                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1238                 return ndlp->nlp_state;
1239         }
1240
1241         /* Check out PRLI rsp */
1242         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1243         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1244         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1245             (npr->prliType == PRLI_FCP_TYPE)) {
1246                 if (npr->initiatorFunc)
1247                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1248                 if (npr->targetFunc)
1249                         ndlp->nlp_type |= NLP_FCP_TARGET;
1250                 if (npr->Retry)
1251                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1252         }
1253
1254         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1255         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1256         return ndlp->nlp_state;
1257 }
1258
1259 /*! lpfc_device_rm_prli_issue
1260   *
1261   * \pre
1262   * \post
1263   * \param   phba
1264   * \param   ndlp
1265   * \param   arg
1266   * \param   evt
1267   * \return  uint32_t
1268   *
1269   * \b Description:
1270   *    This routine is envoked when we a request to remove a nport we are in the
1271   *    process of PRLIing. We should software abort outstanding prli, unreg
1272   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1273   *    on plogi list so it can be freed when LOGO completes.
1274   *
1275   */
1276 static uint32_t
1277 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1278                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1279 {
1280         /* software abort outstanding PRLI */
1281         lpfc_els_abort(phba, ndlp, 1);
1282
1283         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1284         return NLP_STE_FREED_NODE;
1285 }
1286
1287
1288 /*! lpfc_device_recov_prli_issue
1289   *
1290   * \pre
1291   * \post
1292   * \param   phba
1293   * \param   ndlp
1294   * \param   arg
1295   * \param   evt
1296   * \return  uint32_t
1297   *
1298   * \b Description:
1299   *    The routine is envoked when the state of a device is unknown, like
1300   *    during a link down. We should remove the nodelist entry from the
1301   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1302   *    outstanding PRLI command, then free the node entry.
1303   */
1304 static uint32_t
1305 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1306                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1307 {
1308         /* software abort outstanding PRLI */
1309         lpfc_els_abort(phba, ndlp, 1);
1310
1311         ndlp->nlp_state = NLP_STE_NPR_NODE;
1312         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1313         spin_lock_irq(phba->host->host_lock);
1314         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1315         spin_unlock_irq(phba->host->host_lock);
1316         return ndlp->nlp_state;
1317 }
1318
1319 static uint32_t
1320 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1321                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1322 {
1323         struct lpfc_iocbq *cmdiocb;
1324
1325         cmdiocb = (struct lpfc_iocbq *) arg;
1326
1327         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1328         return ndlp->nlp_state;
1329 }
1330
1331 static uint32_t
1332 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1333                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1334 {
1335         struct lpfc_iocbq *cmdiocb;
1336
1337         cmdiocb = (struct lpfc_iocbq *) arg;
1338
1339         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1340         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1341         return ndlp->nlp_state;
1342 }
1343
1344 static uint32_t
1345 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1346                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1347 {
1348         struct lpfc_iocbq *cmdiocb;
1349
1350         cmdiocb = (struct lpfc_iocbq *) arg;
1351
1352         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1353         return ndlp->nlp_state;
1354 }
1355
1356 static uint32_t
1357 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1358                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1359 {
1360         struct lpfc_iocbq *cmdiocb;
1361
1362         cmdiocb = (struct lpfc_iocbq *) arg;
1363
1364         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1365         return ndlp->nlp_state;
1366 }
1367
1368 static uint32_t
1369 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1370                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1371 {
1372         struct lpfc_iocbq *cmdiocb;
1373
1374         cmdiocb = (struct lpfc_iocbq *) arg;
1375
1376         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1377         return ndlp->nlp_state;
1378 }
1379
1380 static uint32_t
1381 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1382                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1383 {
1384         ndlp->nlp_state = NLP_STE_NPR_NODE;
1385         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1386         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1387         lpfc_disc_set_adisc(phba, ndlp);
1388
1389         return ndlp->nlp_state;
1390 }
1391
1392 static uint32_t
1393 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1394                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1395 {
1396         struct lpfc_iocbq *cmdiocb;
1397
1398         cmdiocb = (struct lpfc_iocbq *) arg;
1399
1400         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1401         return ndlp->nlp_state;
1402 }
1403
1404 static uint32_t
1405 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1406                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1407 {
1408         struct lpfc_iocbq *cmdiocb;
1409
1410         cmdiocb = (struct lpfc_iocbq *) arg;
1411
1412         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1413         return ndlp->nlp_state;
1414 }
1415
1416 static uint32_t
1417 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1418                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1419 {
1420         struct lpfc_iocbq *cmdiocb;
1421
1422         cmdiocb = (struct lpfc_iocbq *) arg;
1423
1424         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1425         return ndlp->nlp_state;
1426 }
1427
1428 static uint32_t
1429 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1430                             struct lpfc_nodelist * ndlp, void *arg,
1431                             uint32_t evt)
1432 {
1433         struct lpfc_iocbq *cmdiocb;
1434
1435         cmdiocb = (struct lpfc_iocbq *) arg;
1436
1437         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1438         return ndlp->nlp_state;
1439 }
1440
1441 static uint32_t
1442 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1443                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1444 {
1445         struct lpfc_iocbq *cmdiocb;
1446
1447         cmdiocb = (struct lpfc_iocbq *) arg;
1448
1449         /* flush the target */
1450         spin_lock_irq(phba->host->host_lock);
1451         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1452                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1453         spin_unlock_irq(phba->host->host_lock);
1454
1455         /* Treat like rcv logo */
1456         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1457         return ndlp->nlp_state;
1458 }
1459
1460 static uint32_t
1461 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1462                             struct lpfc_nodelist * ndlp, void *arg,
1463                             uint32_t evt)
1464 {
1465         ndlp->nlp_state = NLP_STE_NPR_NODE;
1466         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1467         spin_lock_irq(phba->host->host_lock);
1468         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1469         spin_unlock_irq(phba->host->host_lock);
1470         lpfc_disc_set_adisc(phba, ndlp);
1471         return ndlp->nlp_state;
1472 }
1473
1474 static uint32_t
1475 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1476                             struct lpfc_nodelist * ndlp, void *arg,
1477                             uint32_t evt)
1478 {
1479         struct lpfc_iocbq *cmdiocb;
1480
1481         cmdiocb = (struct lpfc_iocbq *) arg;
1482
1483         /* Ignore PLOGI if we have an outstanding LOGO */
1484         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1485                 return ndlp->nlp_state;
1486         }
1487
1488         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1489                 spin_lock_irq(phba->host->host_lock);
1490                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1491                 spin_unlock_irq(phba->host->host_lock);
1492                 return ndlp->nlp_state;
1493         }
1494
1495         /* send PLOGI immediately, move to PLOGI issue state */
1496         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1497                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1498                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1499                         lpfc_issue_els_plogi(phba, ndlp, 0);
1500         }
1501         return ndlp->nlp_state;
1502 }
1503
1504 static uint32_t
1505 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1506                             struct lpfc_nodelist * ndlp, void *arg,
1507                             uint32_t evt)
1508 {
1509         struct lpfc_iocbq     *cmdiocb;
1510         struct ls_rjt          stat;
1511
1512         cmdiocb = (struct lpfc_iocbq *) arg;
1513
1514         memset(&stat, 0, sizeof (struct ls_rjt));
1515         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1516         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1517         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1518
1519         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1520                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1521                         spin_lock_irq(phba->host->host_lock);
1522                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1523                         spin_unlock_irq(phba->host->host_lock);
1524                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1525                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1526                         lpfc_issue_els_adisc(phba, ndlp, 0);
1527                 } else {
1528                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1529                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1530                         lpfc_issue_els_plogi(phba, ndlp, 0);
1531                 }
1532         }
1533         return ndlp->nlp_state;
1534 }
1535
1536 static uint32_t
1537 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1538                             struct lpfc_nodelist * ndlp, void *arg,
1539                             uint32_t evt)
1540 {
1541         struct lpfc_iocbq     *cmdiocb;
1542
1543         cmdiocb = (struct lpfc_iocbq *) arg;
1544
1545         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1546         return ndlp->nlp_state;
1547 }
1548
1549 static uint32_t
1550 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1551                             struct lpfc_nodelist * ndlp, void *arg,
1552                             uint32_t evt)
1553 {
1554         struct lpfc_iocbq     *cmdiocb;
1555
1556         cmdiocb = (struct lpfc_iocbq *) arg;
1557
1558         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1559
1560         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1561                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1562                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1563                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1564                         lpfc_issue_els_adisc(phba, ndlp, 0);
1565                 } else {
1566                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1567                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1568                         lpfc_issue_els_plogi(phba, ndlp, 0);
1569                 }
1570         }
1571         return ndlp->nlp_state;
1572 }
1573
1574 static uint32_t
1575 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1576                             struct lpfc_nodelist * ndlp, void *arg,
1577                             uint32_t evt)
1578 {
1579         struct lpfc_iocbq     *cmdiocb;
1580
1581         cmdiocb = (struct lpfc_iocbq *) arg;
1582
1583         spin_lock_irq(phba->host->host_lock);
1584         ndlp->nlp_flag |= NLP_LOGO_ACC;
1585         spin_unlock_irq(phba->host->host_lock);
1586
1587         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1588
1589         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1590                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1591                 spin_lock_irq(phba->host->host_lock);
1592                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1593                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1594                 spin_unlock_irq(phba->host->host_lock);
1595         } else {
1596                 spin_lock_irq(phba->host->host_lock);
1597                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1598                 spin_unlock_irq(phba->host->host_lock);
1599         }
1600         return ndlp->nlp_state;
1601 }
1602
1603 static uint32_t
1604 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1605                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1606 {
1607         struct lpfc_iocbq *cmdiocb, *rspiocb;
1608
1609         cmdiocb = (struct lpfc_iocbq *) arg;
1610         rspiocb = cmdiocb->context_un.rsp_iocb;
1611         return ndlp->nlp_state;
1612 }
1613
1614 static uint32_t
1615 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1616                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1617 {
1618         struct lpfc_iocbq *cmdiocb, *rspiocb;
1619
1620         cmdiocb = (struct lpfc_iocbq *) arg;
1621         rspiocb = cmdiocb->context_un.rsp_iocb;
1622         return ndlp->nlp_state;
1623 }
1624
1625 static uint32_t
1626 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1627                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1628 {
1629         lpfc_unreg_rpi(phba, ndlp);
1630         /* This routine does nothing, just return the current state */
1631         return ndlp->nlp_state;
1632 }
1633
1634 static uint32_t
1635 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1636                             struct lpfc_nodelist * ndlp, void *arg,
1637                             uint32_t evt)
1638 {
1639         struct lpfc_iocbq *cmdiocb, *rspiocb;
1640
1641         cmdiocb = (struct lpfc_iocbq *) arg;
1642         rspiocb = cmdiocb->context_un.rsp_iocb;
1643         return ndlp->nlp_state;
1644 }
1645
1646 static uint32_t
1647 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1648                             struct lpfc_nodelist * ndlp, void *arg,
1649                             uint32_t evt)
1650 {
1651         LPFC_MBOXQ_t *pmb;
1652         MAILBOX_t *mb;
1653
1654         pmb = (LPFC_MBOXQ_t *) arg;
1655         mb = &pmb->mb;
1656
1657         if (!mb->mbxStatus)
1658                 ndlp->nlp_rpi = mb->un.varWords[0];
1659
1660         return ndlp->nlp_state;
1661 }
1662
1663 static uint32_t
1664 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1665                             struct lpfc_nodelist * ndlp, void *arg,
1666                             uint32_t evt)
1667 {
1668         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1669         return NLP_STE_FREED_NODE;
1670 }
1671
1672 static uint32_t
1673 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1674                             struct lpfc_nodelist * ndlp, void *arg,
1675                             uint32_t evt)
1676 {
1677         spin_lock_irq(phba->host->host_lock);
1678         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1679         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1680                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1681                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1682                         list_del_init(&ndlp->els_retry_evt.evt_listp);
1683                 spin_unlock_irq(phba->host->host_lock);
1684                 del_timer_sync(&ndlp->nlp_delayfunc);
1685                 return ndlp->nlp_state;
1686         }
1687         spin_unlock_irq(phba->host->host_lock);
1688         return ndlp->nlp_state;
1689 }
1690
1691
1692 /* This next section defines the NPort Discovery State Machine */
1693
1694 /* There are 4 different double linked lists nodelist entries can reside on.
1695  * The plogi list and adisc list are used when Link Up discovery or RSCN
1696  * processing is needed. Each list holds the nodes that we will send PLOGI
1697  * or ADISC on. These lists will keep track of what nodes will be effected
1698  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1699  * The unmapped_list will contain all nodes that we have successfully logged
1700  * into at the Fibre Channel level. The mapped_list will contain all nodes
1701  * that are mapped FCP targets.
1702  */
1703 /*
1704  * The bind list is a list of undiscovered (potentially non-existent) nodes
1705  * that we have saved binding information on. This information is used when
1706  * nodes transition from the unmapped to the mapped list.
1707  */
1708 /* For UNUSED_NODE state, the node has just been allocated .
1709  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1710  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1711  * and put on the unmapped list. For ADISC processing, the node is taken off
1712  * the ADISC list and placed on either the mapped or unmapped list (depending
1713  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1714  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1715  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1716  * node, the node is taken off the unmapped list. The binding list is checked
1717  * for a valid binding, or a binding is automatically assigned. If binding
1718  * assignment is unsuccessful, the node is left on the unmapped list. If
1719  * binding assignment is successful, the associated binding list entry (if
1720  * any) is removed, and the node is placed on the mapped list.
1721  */
1722 /*
1723  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1724  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1725  * expire, all effected nodes will receive a DEVICE_RM event.
1726  */
1727 /*
1728  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1729  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1730  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1731  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1732  * we will first process the ADISC list.  32 entries are processed initially and
1733  * ADISC is initited for each one.  Completions / Events for each node are
1734  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1735  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1736  * waiting, and the ADISC list count is identically 0, then we are done. For
1737  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1738  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1739  * list.  32 entries are processed initially and PLOGI is initited for each one.
1740  * Completions / Events for each node are funnelled thru the state machine.  As
1741  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1742  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1743  * indentically 0, then we are done. We have now completed discovery / RSCN
1744  * handling. Upon completion, ALL nodes should be on either the mapped or
1745  * unmapped lists.
1746  */
1747
1748 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1749      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1750         /* Action routine                  Event       Current State  */
1751         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1752         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1753         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1754         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1755         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1756         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1757         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1758         lpfc_disc_illegal,              /* CMPL_PRLI       */
1759         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1760         lpfc_disc_illegal,              /* CMPL_ADISC      */
1761         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1762         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1763         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1764
1765         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1766         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1767         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1768         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1769         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1770         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1771         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1772         lpfc_disc_illegal,              /* CMPL_PRLI       */
1773         lpfc_disc_illegal,              /* CMPL_LOGO       */
1774         lpfc_disc_illegal,              /* CMPL_ADISC      */
1775         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1776         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1777         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1778
1779         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1780         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1781         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1782         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1783         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1784         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1785         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1786         lpfc_disc_illegal,              /* CMPL_PRLI       */
1787         lpfc_disc_illegal,              /* CMPL_LOGO       */
1788         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1789         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1790         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1791         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1792
1793         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1794         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1795         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1796         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1797         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1798         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1799         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1800         lpfc_disc_illegal,              /* CMPL_PRLI       */
1801         lpfc_disc_illegal,              /* CMPL_LOGO       */
1802         lpfc_disc_illegal,              /* CMPL_ADISC      */
1803         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1804         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1805         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1806
1807         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1808         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1809         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1810         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1811         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1812         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1813         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1814         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1815         lpfc_disc_illegal,              /* CMPL_LOGO       */
1816         lpfc_disc_illegal,              /* CMPL_ADISC      */
1817         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1818         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1819         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1820
1821         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1822         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1823         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1824         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1825         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1826         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1827         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1828         lpfc_disc_illegal,              /* CMPL_PRLI       */
1829         lpfc_disc_illegal,              /* CMPL_LOGO       */
1830         lpfc_disc_illegal,              /* CMPL_ADISC      */
1831         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1832         lpfc_disc_illegal,              /* DEVICE_RM       */
1833         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1834
1835         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1836         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1837         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1838         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1839         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1840         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1841         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1842         lpfc_disc_illegal,              /* CMPL_PRLI       */
1843         lpfc_disc_illegal,              /* CMPL_LOGO       */
1844         lpfc_disc_illegal,              /* CMPL_ADISC      */
1845         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1846         lpfc_disc_illegal,              /* DEVICE_RM       */
1847         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1848
1849         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1850         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1851         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1852         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1853         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1854         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1855         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
1856         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
1857         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1858         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
1859         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1860         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1861         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1862 };
1863
1864 int
1865 lpfc_disc_state_machine(struct lpfc_hba * phba,
1866                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1867 {
1868         uint32_t cur_state, rc;
1869         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1870                          uint32_t);
1871
1872         ndlp->nlp_disc_refcnt++;
1873         cur_state = ndlp->nlp_state;
1874
1875         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1876         lpfc_printf_log(phba,
1877                         KERN_INFO,
1878                         LOG_DISCOVERY,
1879                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1880                         "Data: x%x\n",
1881                         phba->brd_no,
1882                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1883
1884         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1885         rc = (func) (phba, ndlp, arg, evt);
1886
1887         /* DSM out state <rc> on NPort <nlp_DID> */
1888         lpfc_printf_log(phba,
1889                        KERN_INFO,
1890                        LOG_DISCOVERY,
1891                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1892                        phba->brd_no,
1893                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1894
1895         ndlp->nlp_disc_refcnt--;
1896
1897         /* Check to see if ndlp removal is deferred */
1898         if ((ndlp->nlp_disc_refcnt == 0)
1899             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1900                 spin_lock_irq(phba->host->host_lock);
1901                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1902                 spin_unlock_irq(phba->host->host_lock);
1903                 lpfc_nlp_remove(phba, ndlp);
1904                 return NLP_STE_FREED_NODE;
1905         }
1906         if (rc == NLP_STE_FREED_NODE)
1907                 return NLP_STE_FREED_NODE;
1908         ndlp->nlp_state = rc;
1909         return rc;
1910 }