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) 2004-2006 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         } else {
 154                 /* Force ulpStatus error since we are returning NULL ptr */
 155                 if (!(irsp->ulpStatus)) {
 156                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 157                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 158                 }
 159                 ptr = NULL;
 160         }
 161         return ptr;
 162 }
 163
 164
 165 /*
 166  * Free resources / clean up outstanding I/Os
 167  * associated with a LPFC_NODELIST entry. This
 168  * routine effectively results in a "software abort".
 169  */
 170 int
 171 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 172         int send_abts)
 173 {
 174         struct lpfc_sli *psli;
 175         struct lpfc_sli_ring *pring;
 176         struct lpfc_iocbq *iocb, *next_iocb;
 177         IOCB_t *icmd;
 178         int    found = 0;
 179
 180         /* Abort outstanding I/O on NPort <nlp_DID> */
 181         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 182                         "%d:0201 Abort outstanding I/O on NPort x%x "
 183                         "Data: x%x x%x x%x\n",
 184                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 185                         ndlp->nlp_state, ndlp->nlp_rpi);
 186
 187         psli = &phba->sli;
 188         pring = &psli->ring[LPFC_ELS_RING];
 189
 190         /* First check the txq */
 191         do {
 192                 found = 0;
 193                 spin_lock_irq(phba->host->host_lock);
 194                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 195                         /* Check to see if iocb matches the nport we are looking
 196                            for */
 197                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 198                                 found = 1;
 199                                 /* It matches, so deque and call compl with an
 200                                    error */
 201                                 list_del(&iocb->list);
 202                                 pring->txq_cnt--;
 203                                 if (iocb->iocb_cmpl) {
 204                                         icmd = &iocb->iocb;
 205                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 206                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 207                                         spin_unlock_irq(phba->host->host_lock);
 208                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 209                                         spin_lock_irq(phba->host->host_lock);
 210                                 } else
 211                                         lpfc_sli_release_iocbq(phba, iocb);
 212                                 break;
 213                         }
 214                 }
 215                 spin_unlock_irq(phba->host->host_lock);
 216         } while (found);
 217
 218         /* Everything on txcmplq will be returned by firmware
 219          * with a no rpi / linkdown / abort error.  For ring 0,
 220          * ELS discovery, we want to get rid of it right here.
 221          */
 222         /* Next check the txcmplq */
 223         do {
 224                 found = 0;
 225                 spin_lock_irq(phba->host->host_lock);
 226                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 227                                          list) {
 228                         /* Check to see if iocb matches the nport we are looking
 229                            for */
 230                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 231                                 found = 1;
 232                                 /* It matches, so deque and call compl with an
 233                                    error */
 234                                 list_del(&iocb->list);
 235                                 pring->txcmplq_cnt--;
 236
 237                                 icmd = &iocb->iocb;
 238                                 /* If the driver is completing an ELS
 239                                  * command early, flush it out of the firmware.
 240                                  */
 241                                 if (send_abts &&
 242                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 243                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 244                                         lpfc_sli_issue_abort_iotag32(phba,
 245                                                              pring, iocb);
 246                                 }
 247                                 if (iocb->iocb_cmpl) {
 248                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 249                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 250                                         spin_unlock_irq(phba->host->host_lock);
 251                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 252                                         spin_lock_irq(phba->host->host_lock);
 253                                 } else
 254                                         lpfc_sli_release_iocbq(phba, iocb);
 255                                 break;
 256                         }
 257                 }
 258                 spin_unlock_irq(phba->host->host_lock);
 259         } while(found);
 260
 261         /* If we are delaying issuing an ELS command, cancel it */
 262         if (ndlp->nlp_flag & NLP_DELAY_TMO)
 263                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
 264         return 0;
 265 }
 266
 267 static int
 268 lpfc_rcv_plogi(struct lpfc_hba * phba,
 269                       struct lpfc_nodelist * ndlp,
 270                       struct lpfc_iocbq *cmdiocb)
 271 {
 272         struct lpfc_dmabuf *pcmd;
 273         uint32_t *lp;
 274         IOCB_t *icmd;
 275         struct serv_parm *sp;
 276         LPFC_MBOXQ_t *mbox;
 277         struct ls_rjt stat;
 278         int rc;
 279
 280         memset(&stat, 0, sizeof (struct ls_rjt));
 281         if (phba->hba_state <= LPFC_FLOGI) {
 282                 /* Before responding to PLOGI, check for pt2pt mode.
 283                  * If we are pt2pt, with an outstanding FLOGI, abort
 284                  * the FLOGI and resend it first.
 285                  */
 286                 if (phba->fc_flag & FC_PT2PT) {
 287                         lpfc_els_abort_flogi(phba);
 288                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 289                                 /* If the other side is supposed to initiate
 290                                  * the PLOGI anyway, just ACC it now and
 291                                  * move on with discovery.
 292                                  */
 293                                 phba->fc_edtov = FF_DEF_EDTOV;
 294                                 phba->fc_ratov = FF_DEF_RATOV;
 295                                 /* Start discovery - this should just do
 296                                    CLEAR_LA */
 297                                 lpfc_disc_start(phba);
 298                         } else {
 299                                 lpfc_initial_flogi(phba);
 300                         }
 301                 } else {
 302                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 303                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 304                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 305                                             ndlp);
 306                         return 0;
 307                 }
 308         }
 309         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 310         lp = (uint32_t *) pcmd->virt;
 311         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 312         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 313                 /* Reject this request because invalid parameters */
 314                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 315                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 316                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 317                 return 0;
 318         }
 319         icmd = &cmdiocb->iocb;
 320
 321         /* PLOGI chkparm OK */
 322         lpfc_printf_log(phba,
 323                         KERN_INFO,
 324                         LOG_ELS,
 325                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 326                         phba->brd_no,
 327                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 328                         ndlp->nlp_rpi);
 329
 330         if ((phba->cfg_fcp_class == 2) &&
 331             (sp->cls2.classValid)) {
 332                 ndlp->nlp_fcp_info |= CLASS2;
 333         } else {
 334                 ndlp->nlp_fcp_info |= CLASS3;
 335         }
 336         ndlp->nlp_class_sup = 0;
 337         if (sp->cls1.classValid)
 338                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 339         if (sp->cls2.classValid)
 340                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 341         if (sp->cls3.classValid)
 342                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 343         if (sp->cls4.classValid)
 344                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 345         ndlp->nlp_maxframe =
 346                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 347
 348         /* no need to reg_login if we are already in one of these states */
 349         switch (ndlp->nlp_state) {
 350         case  NLP_STE_NPR_NODE:
 351                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 352                         break;
 353         case  NLP_STE_REG_LOGIN_ISSUE:
 354         case  NLP_STE_PRLI_ISSUE:
 355         case  NLP_STE_UNMAPPED_NODE:
 356         case  NLP_STE_MAPPED_NODE:
 357                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 358                 return 1;
 359         }
 360
 361         if ((phba->fc_flag & FC_PT2PT)
 362             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 363                 /* rcv'ed PLOGI decides what our NPortId will be */
 364                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 365                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 366                 if (mbox == NULL)
 367                         goto out;
 368                 lpfc_config_link(phba, mbox);
 369                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 370                 rc = lpfc_sli_issue_mbox
 371                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 372                 if (rc == MBX_NOT_FINISHED) {
 373                         mempool_free( mbox, phba->mbox_mem_pool);
 374                         goto out;
 375                 }
 376
 377                 lpfc_can_disctmo(phba);
 378         }
 379         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 380         if (mbox == NULL)
 381                 goto out;
 382
 383         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 384                            (uint8_t *) sp, mbox, 0)) {
 385                 mempool_free( mbox, phba->mbox_mem_pool);
 386                 goto out;
 387         }
 388
 389         /* ACC PLOGI rsp command needs to execute first,
 390          * queue this mbox command to be processed later.
 391          */
 392         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 393         mbox->context2  = ndlp;
 394         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 395
 396         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 397         return 1;
 398
 399 out:
 400         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 401         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 402         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 403         return 0;
 404 }
 405
 406 static int
 407 lpfc_rcv_padisc(struct lpfc_hba * phba,
 408                 struct lpfc_nodelist * ndlp,
 409                 struct lpfc_iocbq *cmdiocb)
 410 {
 411         struct lpfc_dmabuf *pcmd;
 412         struct serv_parm *sp;
 413         struct lpfc_name *pnn, *ppn;
 414         struct ls_rjt stat;
 415         ADISC *ap;
 416         IOCB_t *icmd;
 417         uint32_t *lp;
 418         uint32_t cmd;
 419
 420         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 421         lp = (uint32_t *) pcmd->virt;
 422
 423         cmd = *lp++;
 424         if (cmd == ELS_CMD_ADISC) {
 425                 ap = (ADISC *) lp;
 426                 pnn = (struct lpfc_name *) & ap->nodeName;
 427                 ppn = (struct lpfc_name *) & ap->portName;
 428         } else {
 429                 sp = (struct serv_parm *) lp;
 430                 pnn = (struct lpfc_name *) & sp->nodeName;
 431                 ppn = (struct lpfc_name *) & sp->portName;
 432         }
 433
 434         icmd = &cmdiocb->iocb;
 435         if ((icmd->ulpStatus == 0) &&
 436             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 437                 if (cmd == ELS_CMD_ADISC) {
 438                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 439                 } else {
 440                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 441                                 NULL, 0);
 442                 }
 443                 return 1;
 444         }
 445         /* Reject this request because invalid parameters */
 446         stat.un.b.lsRjtRsvd0 = 0;
 447         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 448         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 449         stat.un.b.vendorUnique = 0;
 450         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 451
 452         /* 1 sec timeout */
 453         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 454
 455         spin_lock_irq(phba->host->host_lock);
 456         ndlp->nlp_flag |= NLP_DELAY_TMO;
 457         spin_unlock_irq(phba->host->host_lock);
 458         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 459         ndlp->nlp_prev_state = ndlp->nlp_state;
 460         ndlp->nlp_state = NLP_STE_NPR_NODE;
 461         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 462         return 0;
 463 }
 464
 465 static int
 466 lpfc_rcv_logo(struct lpfc_hba * phba,
 467                       struct lpfc_nodelist * ndlp,
 468                       struct lpfc_iocbq *cmdiocb)
 469 {
 470         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 471         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 472          * PLOGIs during LOGO storms from a device.
 473          */
 474         ndlp->nlp_flag |= NLP_LOGO_ACC;
 475         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 476
 477         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 478                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 479                 /* Only try to re-login if this is NOT a Fabric Node */
 480                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 481                 spin_lock_irq(phba->host->host_lock);
 482                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 483                 spin_unlock_irq(phba->host->host_lock);
 484
 485                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 486                 ndlp->nlp_prev_state = ndlp->nlp_state;
 487                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 488                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 489         } else {
 490                 ndlp->nlp_prev_state = ndlp->nlp_state;
 491                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 492                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 493         }
 494
 495         spin_lock_irq(phba->host->host_lock);
 496         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 497         spin_unlock_irq(phba->host->host_lock);
 498         /* The driver has to wait until the ACC completes before it continues
 499          * processing the LOGO.  The action will resume in
 500          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 501          * unreg_login, the driver waits so the ACC does not get aborted.
 502          */
 503         return 0;
 504 }
 505
 506 static void
 507 lpfc_rcv_prli(struct lpfc_hba * phba,
 508                       struct lpfc_nodelist * ndlp,
 509                       struct lpfc_iocbq *cmdiocb)
 510 {
 511         struct lpfc_dmabuf *pcmd;
 512         uint32_t *lp;
 513         PRLI *npr;
 514         struct fc_rport *rport = ndlp->rport;
 515         u32 roles;
 516
 517         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 518         lp = (uint32_t *) pcmd->virt;
 519         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 520
 521         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 522         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 523         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 524             (npr->prliType == PRLI_FCP_TYPE)) {
 525                 if (npr->initiatorFunc)
 526                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 527                 if (npr->targetFunc)
 528                         ndlp->nlp_type |= NLP_FCP_TARGET;
 529                 if (npr->Retry)
 530                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 531         }
 532         if (rport) {
 533                 /* We need to update the rport role values */
 534                 roles = FC_RPORT_ROLE_UNKNOWN;
 535                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 536                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 537                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 538                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 539                 fc_remote_port_rolechg(rport, roles);
 540         }
 541 }
 542
 543 static uint32_t
 544 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 545                       struct lpfc_nodelist * ndlp)
 546 {
 547         /* Check config parameter use-adisc or FCP-2 */
 548         if ((phba->cfg_use_adisc == 0) &&
 549                 !(phba->fc_flag & FC_RSCN_MODE)) {
 550                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 551                         return 0;
 552         }
 553         spin_lock_irq(phba->host->host_lock);
 554         ndlp->nlp_flag |= NLP_NPR_ADISC;
 555         spin_unlock_irq(phba->host->host_lock);
 556         return 1;
 557 }
 558
 559 static uint32_t
 560 lpfc_disc_illegal(struct lpfc_hba * phba,
 561                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 562 {
 563         lpfc_printf_log(phba,
 564                         KERN_ERR,
 565                         LOG_DISCOVERY,
 566                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 567                         "state x%x Data: x%x x%x\n",
 568                         phba->brd_no,
 569                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 570                         ndlp->nlp_flag);
 571         return ndlp->nlp_state;
 572 }
 573
 574 /* Start of Discovery State Machine routines */
 575
 576 static uint32_t
 577 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 578                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 579 {
 580         struct lpfc_iocbq *cmdiocb;
 581
 582         cmdiocb = (struct lpfc_iocbq *) arg;
 583
 584         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 585                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 586                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 587                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 588                 return ndlp->nlp_state;
 589         }
 590         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 591         return NLP_STE_FREED_NODE;
 592 }
 593
 594 static uint32_t
 595 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 596                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 597 {
 598         lpfc_issue_els_logo(phba, ndlp, 0);
 599         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 600         return ndlp->nlp_state;
 601 }
 602
 603 static uint32_t
 604 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 605                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 606 {
 607         struct lpfc_iocbq     *cmdiocb;
 608
 609         cmdiocb = (struct lpfc_iocbq *) arg;
 610
 611         spin_lock_irq(phba->host->host_lock);
 612         ndlp->nlp_flag |= NLP_LOGO_ACC;
 613         spin_unlock_irq(phba->host->host_lock);
 614         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 615         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 616
 617         return ndlp->nlp_state;
 618 }
 619
 620 static uint32_t
 621 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 622                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 623 {
 624         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 625         return NLP_STE_FREED_NODE;
 626 }
 627
 628 static uint32_t
 629 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 630                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 631 {
 632         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 633         return NLP_STE_FREED_NODE;
 634 }
 635
 636 static uint32_t
 637 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 638                            void *arg, uint32_t evt)
 639 {
 640         struct lpfc_iocbq *cmdiocb = arg;
 641         struct lpfc_dmabuf *pcmd;
 642         struct serv_parm *sp;
 643         uint32_t *lp;
 644         struct ls_rjt stat;
 645         int port_cmp;
 646
 647         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 648         lp = (uint32_t *) pcmd->virt;
 649         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 650
 651         memset(&stat, 0, sizeof (struct ls_rjt));
 652
 653         /* For a PLOGI, we only accept if our portname is less
 654          * than the remote portname.
 655          */
 656         phba->fc_stat.elsLogiCol++;
 657         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 658                           sizeof (struct lpfc_name));
 659
 660         if (port_cmp >= 0) {
 661                 /* Reject this request because the remote node will accept
 662                    ours */
 663                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 664                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 665                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 666         } else {
 667                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 668         } /* if our portname was less */
 669
 670         return ndlp->nlp_state;
 671 }
 672
 673 static uint32_t
 674 lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
 675                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 676 {
 677         struct lpfc_iocbq     *cmdiocb;
 678
 679         cmdiocb = (struct lpfc_iocbq *) arg;
 680
 681         /* software abort outstanding PLOGI */
 682         lpfc_els_abort(phba, ndlp, 1);
 683
 684         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 685         return ndlp->nlp_state;
 686 }
 687
 688 static uint32_t
 689 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 690                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 691 {
 692         struct lpfc_iocbq     *cmdiocb;
 693
 694         cmdiocb = (struct lpfc_iocbq *) arg;
 695
 696         /* software abort outstanding PLOGI */
 697         lpfc_els_abort(phba, ndlp, 1);
 698
 699         if (evt == NLP_EVT_RCV_LOGO) {
 700                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 701         } else {
 702                 lpfc_issue_els_logo(phba, ndlp, 0);
 703         }
 704
 705         /* Put ndlp in npr list set plogi timer for 1 sec */
 706         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 707         spin_lock_irq(phba->host->host_lock);
 708         ndlp->nlp_flag |= NLP_DELAY_TMO;
 709         spin_unlock_irq(phba->host->host_lock);
 710         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 711         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 712         ndlp->nlp_state = NLP_STE_NPR_NODE;
 713         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 714
 715         return ndlp->nlp_state;
 716 }
 717
 718 static uint32_t
 719 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 720                             struct lpfc_nodelist * ndlp, void *arg,
 721                             uint32_t evt)
 722 {
 723         struct lpfc_iocbq *cmdiocb, *rspiocb;
 724         struct lpfc_dmabuf *pcmd, *prsp;
 725         uint32_t *lp;
 726         IOCB_t *irsp;
 727         struct serv_parm *sp;
 728         LPFC_MBOXQ_t *mbox;
 729
 730         cmdiocb = (struct lpfc_iocbq *) arg;
 731         rspiocb = cmdiocb->context_un.rsp_iocb;
 732
 733         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 734                 /* Recovery from PLOGI collision logic */
 735                 return ndlp->nlp_state;
 736         }
 737
 738         irsp = &rspiocb->iocb;
 739
 740         if (irsp->ulpStatus)
 741                 goto out;
 742
 743         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 744
 745         prsp = list_get_first(&pcmd->list,
 746                               struct lpfc_dmabuf,
 747                               list);
 748         lp = (uint32_t *) prsp->virt;
 749
 750         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 751         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 752                 goto out;
 753
 754         /* PLOGI chkparm OK */
 755         lpfc_printf_log(phba,
 756                         KERN_INFO,
 757                         LOG_ELS,
 758                         "%d:0121 PLOGI chkparm OK "
 759                         "Data: x%x x%x x%x x%x\n",
 760                         phba->brd_no,
 761                         ndlp->nlp_DID, ndlp->nlp_state,
 762                         ndlp->nlp_flag, ndlp->nlp_rpi);
 763
 764         if ((phba->cfg_fcp_class == 2) &&
 765             (sp->cls2.classValid)) {
 766                 ndlp->nlp_fcp_info |= CLASS2;
 767         } else {
 768                 ndlp->nlp_fcp_info |= CLASS3;
 769         }
 770         ndlp->nlp_class_sup = 0;
 771         if (sp->cls1.classValid)
 772                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 773         if (sp->cls2.classValid)
 774                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 775         if (sp->cls3.classValid)
 776                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 777         if (sp->cls4.classValid)
 778                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 779         ndlp->nlp_maxframe =
 780                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 781                 sp->cmn.bbRcvSizeLsb;
 782
 783         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 784                                    GFP_KERNEL)))
 785                 goto out;
 786
 787         lpfc_unreg_rpi(phba, ndlp);
 788         if (lpfc_reg_login
 789             (phba, irsp->un.elsreq64.remoteID,
 790              (uint8_t *) sp, mbox, 0) == 0) {
 791                 /* set_slim mailbox command needs to
 792                  * execute first, queue this command to
 793                  * be processed later.
 794                  */
 795                 switch (ndlp->nlp_DID) {
 796                 case NameServer_DID:
 797                         mbox->mbox_cmpl =
 798                                 lpfc_mbx_cmpl_ns_reg_login;
 799                         break;
 800                 case FDMI_DID:
 801                         mbox->mbox_cmpl =
 802                                 lpfc_mbx_cmpl_fdmi_reg_login;
 803                         break;
 804                 default:
 805                         mbox->mbox_cmpl =
 806                                 lpfc_mbx_cmpl_reg_login;
 807                 }
 808                 mbox->context2 = ndlp;
 809                 if (lpfc_sli_issue_mbox(phba, mbox,
 810                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 811                     != MBX_NOT_FINISHED) {
 812                         ndlp->nlp_state =
 813                                 NLP_STE_REG_LOGIN_ISSUE;
 814                         lpfc_nlp_list(phba, ndlp,
 815                                       NLP_REGLOGIN_LIST);
 816                         return ndlp->nlp_state;
 817                 }
 818                 mempool_free(mbox, phba->mbox_mem_pool);
 819         } else {
 820                 mempool_free(mbox, phba->mbox_mem_pool);
 821         }
 822
 823
 824  out:
 825         /* Free this node since the driver cannot login or has the wrong
 826            sparm */
 827         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 828         return NLP_STE_FREED_NODE;
 829 }
 830
 831 static uint32_t
 832 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 833                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 834 {
 835         /* software abort outstanding PLOGI */
 836         lpfc_els_abort(phba, ndlp, 1);
 837
 838         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 839         return NLP_STE_FREED_NODE;
 840 }
 841
 842 static uint32_t
 843 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 844                             struct lpfc_nodelist * ndlp, void *arg,
 845                             uint32_t evt)
 846 {
 847         /* software abort outstanding PLOGI */
 848         lpfc_els_abort(phba, ndlp, 1);
 849
 850         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 851         ndlp->nlp_state = NLP_STE_NPR_NODE;
 852         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 853         spin_lock_irq(phba->host->host_lock);
 854         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 855         spin_unlock_irq(phba->host->host_lock);
 856
 857         return ndlp->nlp_state;
 858 }
 859
 860 static uint32_t
 861 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 862                             struct lpfc_nodelist * ndlp, void *arg,
 863                             uint32_t evt)
 864 {
 865         struct lpfc_iocbq *cmdiocb;
 866
 867         /* software abort outstanding ADISC */
 868         lpfc_els_abort(phba, ndlp, 1);
 869
 870         cmdiocb = (struct lpfc_iocbq *) arg;
 871
 872         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 873                 return ndlp->nlp_state;
 874         }
 875         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 876         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 877         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 878         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
 879
 880         return ndlp->nlp_state;
 881 }
 882
 883 static uint32_t
 884 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 885                             struct lpfc_nodelist * ndlp, void *arg,
 886                             uint32_t evt)
 887 {
 888         struct lpfc_iocbq *cmdiocb;
 889
 890         cmdiocb = (struct lpfc_iocbq *) arg;
 891
 892         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 893         return ndlp->nlp_state;
 894 }
 895
 896 static uint32_t
 897 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 898                             struct lpfc_nodelist * ndlp, void *arg,
 899                             uint32_t evt)
 900 {
 901         struct lpfc_iocbq *cmdiocb;
 902
 903         cmdiocb = (struct lpfc_iocbq *) arg;
 904
 905         /* software abort outstanding ADISC */
 906         lpfc_els_abort(phba, ndlp, 0);
 907
 908         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 909         return ndlp->nlp_state;
 910 }
 911
 912 static uint32_t
 913 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 914                             struct lpfc_nodelist * ndlp, void *arg,
 915                             uint32_t evt)
 916 {
 917         struct lpfc_iocbq *cmdiocb;
 918
 919         cmdiocb = (struct lpfc_iocbq *) arg;
 920
 921         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 922         return ndlp->nlp_state;
 923 }
 924
 925 static uint32_t
 926 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 927                             struct lpfc_nodelist * ndlp, void *arg,
 928                             uint32_t evt)
 929 {
 930         struct lpfc_iocbq *cmdiocb;
 931
 932         cmdiocb = (struct lpfc_iocbq *) arg;
 933
 934         /* Treat like rcv logo */
 935         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 936         return ndlp->nlp_state;
 937 }
 938
 939 static uint32_t
 940 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 941                             struct lpfc_nodelist * ndlp, void *arg,
 942                             uint32_t evt)
 943 {
 944         struct lpfc_iocbq *cmdiocb, *rspiocb;
 945         IOCB_t *irsp;
 946         ADISC *ap;
 947
 948         cmdiocb = (struct lpfc_iocbq *) arg;
 949         rspiocb = cmdiocb->context_un.rsp_iocb;
 950
 951         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 952         irsp = &rspiocb->iocb;
 953
 954         if ((irsp->ulpStatus) ||
 955                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 956                 /* 1 sec timeout */
 957                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 958                 spin_lock_irq(phba->host->host_lock);
 959                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 960                 spin_unlock_irq(phba->host->host_lock);
 961                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 962
 963                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 964                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 965
 966                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 967                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 968                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 969                 lpfc_unreg_rpi(phba, ndlp);
 970                 return ndlp->nlp_state;
 971         }
 972
 973         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 974                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 975                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 976                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 977         } else {
 978                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 979                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 980                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 981         }
 982         return ndlp->nlp_state;
 983 }
 984
 985 static uint32_t
 986 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 987                             struct lpfc_nodelist * ndlp, void *arg,
 988                             uint32_t evt)
 989 {
 990         /* software abort outstanding ADISC */
 991         lpfc_els_abort(phba, ndlp, 1);
 992
 993         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 994         return NLP_STE_FREED_NODE;
 995 }
 996
 997 static uint32_t
 998 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
 999                             struct lpfc_nodelist * ndlp, void *arg,
1000                             uint32_t evt)
1001 {
1002         /* software abort outstanding ADISC */
1003         lpfc_els_abort(phba, ndlp, 1);
1004
1005         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1006         ndlp->nlp_state = NLP_STE_NPR_NODE;
1007         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1008         spin_lock_irq(phba->host->host_lock);
1009         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1010         ndlp->nlp_flag |= NLP_NPR_ADISC;
1011         spin_unlock_irq(phba->host->host_lock);
1012
1013         return ndlp->nlp_state;
1014 }
1015
1016 static uint32_t
1017 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1018                               struct lpfc_nodelist * ndlp, void *arg,
1019                               uint32_t evt)
1020 {
1021         struct lpfc_iocbq *cmdiocb;
1022
1023         cmdiocb = (struct lpfc_iocbq *) arg;
1024
1025         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1026         return ndlp->nlp_state;
1027 }
1028
1029 static uint32_t
1030 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1031                              struct lpfc_nodelist * ndlp, void *arg,
1032                              uint32_t evt)
1033 {
1034         struct lpfc_iocbq *cmdiocb;
1035
1036         cmdiocb = (struct lpfc_iocbq *) arg;
1037
1038         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1039         return ndlp->nlp_state;
1040 }
1041
1042 static uint32_t
1043 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1044                              struct lpfc_nodelist * ndlp, void *arg,
1045                              uint32_t evt)
1046 {
1047         struct lpfc_iocbq *cmdiocb;
1048
1049         cmdiocb = (struct lpfc_iocbq *) arg;
1050
1051         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1052         return ndlp->nlp_state;
1053 }
1054
1055 static uint32_t
1056 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1057                                struct lpfc_nodelist * ndlp, void *arg,
1058                                uint32_t evt)
1059 {
1060         struct lpfc_iocbq *cmdiocb;
1061
1062         cmdiocb = (struct lpfc_iocbq *) arg;
1063
1064         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1065         return ndlp->nlp_state;
1066 }
1067
1068 static uint32_t
1069 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1070                              struct lpfc_nodelist * ndlp, void *arg,
1071                              uint32_t evt)
1072 {
1073         struct lpfc_iocbq *cmdiocb;
1074
1075         cmdiocb = (struct lpfc_iocbq *) arg;
1076         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1077         return ndlp->nlp_state;
1078 }
1079
1080 static uint32_t
1081 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1082                                   struct lpfc_nodelist * ndlp,
1083                                   void *arg, uint32_t evt)
1084 {
1085         LPFC_MBOXQ_t *pmb;
1086         MAILBOX_t *mb;
1087         uint32_t did;
1088
1089         pmb = (LPFC_MBOXQ_t *) arg;
1090         mb = &pmb->mb;
1091         did = mb->un.varWords[1];
1092         if (mb->mbxStatus) {
1093                 /* RegLogin failed */
1094                 lpfc_printf_log(phba,
1095                                 KERN_ERR,
1096                                 LOG_DISCOVERY,
1097                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1098                                 phba->brd_no,
1099                                 did, mb->mbxStatus, phba->hba_state);
1100
1101                 /* Put ndlp in npr list set plogi timer for 1 sec */
1102                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1103                 spin_lock_irq(phba->host->host_lock);
1104                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1105                 spin_unlock_irq(phba->host->host_lock);
1106                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1107
1108                 lpfc_issue_els_logo(phba, ndlp, 0);
1109                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1110                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1111                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1112                 return ndlp->nlp_state;
1113         }
1114
1115         ndlp->nlp_rpi = mb->un.varWords[0];
1116
1117         /* Only if we are not a fabric nport do we issue PRLI */
1118         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1119                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1120                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1121                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1122                 lpfc_issue_els_prli(phba, ndlp, 0);
1123         } else {
1124                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1125                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1126                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1127         }
1128         return ndlp->nlp_state;
1129 }
1130
1131 static uint32_t
1132 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1133                               struct lpfc_nodelist * ndlp, void *arg,
1134                               uint32_t evt)
1135 {
1136         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1137         return NLP_STE_FREED_NODE;
1138 }
1139
1140 static uint32_t
1141 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1142                                struct lpfc_nodelist * ndlp, void *arg,
1143                                uint32_t evt)
1144 {
1145         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1146         ndlp->nlp_state = NLP_STE_NPR_NODE;
1147         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1148         spin_lock_irq(phba->host->host_lock);
1149         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1150         spin_unlock_irq(phba->host->host_lock);
1151         return ndlp->nlp_state;
1152 }
1153
1154 static uint32_t
1155 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1156                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1157 {
1158         struct lpfc_iocbq *cmdiocb;
1159
1160         cmdiocb = (struct lpfc_iocbq *) arg;
1161
1162         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1163         return ndlp->nlp_state;
1164 }
1165
1166 static uint32_t
1167 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1168                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1169 {
1170         struct lpfc_iocbq *cmdiocb;
1171
1172         cmdiocb = (struct lpfc_iocbq *) arg;
1173
1174         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1175         return ndlp->nlp_state;
1176 }
1177
1178 static uint32_t
1179 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1180                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1181 {
1182         struct lpfc_iocbq *cmdiocb;
1183
1184         cmdiocb = (struct lpfc_iocbq *) arg;
1185
1186         /* Software abort outstanding PRLI before sending acc */
1187         lpfc_els_abort(phba, ndlp, 1);
1188
1189         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1190         return ndlp->nlp_state;
1191 }
1192
1193 static uint32_t
1194 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1195                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1196 {
1197         struct lpfc_iocbq *cmdiocb;
1198
1199         cmdiocb = (struct lpfc_iocbq *) arg;
1200
1201         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1202         return ndlp->nlp_state;
1203 }
1204
1205 /* This routine is envoked when we rcv a PRLO request from a nport
1206  * we are logged into.  We should send back a PRLO rsp setting the
1207  * appropriate bits.
1208  * NEXT STATE = PRLI_ISSUE
1209  */
1210 static uint32_t
1211 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1212                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1213 {
1214         struct lpfc_iocbq *cmdiocb;
1215
1216         cmdiocb = (struct lpfc_iocbq *) arg;
1217         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1218         return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1223                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1224 {
1225         struct lpfc_iocbq *cmdiocb, *rspiocb;
1226         IOCB_t *irsp;
1227         PRLI *npr;
1228
1229         cmdiocb = (struct lpfc_iocbq *) arg;
1230         rspiocb = cmdiocb->context_un.rsp_iocb;
1231         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1232
1233         irsp = &rspiocb->iocb;
1234         if (irsp->ulpStatus) {
1235                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
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_prev_state = NLP_STE_PRLI_ISSUE;
1255         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1256         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1257         return ndlp->nlp_state;
1258 }
1259
1260 /*! lpfc_device_rm_prli_issue
1261   *
1262   * \pre
1263   * \post
1264   * \param   phba
1265   * \param   ndlp
1266   * \param   arg
1267   * \param   evt
1268   * \return  uint32_t
1269   *
1270   * \b Description:
1271   *    This routine is envoked when we a request to remove a nport we are in the
1272   *    process of PRLIing. We should software abort outstanding prli, unreg
1273   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1274   *    on plogi list so it can be freed when LOGO completes.
1275   *
1276   */
1277 static uint32_t
1278 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1279                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1280 {
1281         /* software abort outstanding PRLI */
1282         lpfc_els_abort(phba, ndlp, 1);
1283
1284         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1285         return NLP_STE_FREED_NODE;
1286 }
1287
1288
1289 /*! lpfc_device_recov_prli_issue
1290   *
1291   * \pre
1292   * \post
1293   * \param   phba
1294   * \param   ndlp
1295   * \param   arg
1296   * \param   evt
1297   * \return  uint32_t
1298   *
1299   * \b Description:
1300   *    The routine is envoked when the state of a device is unknown, like
1301   *    during a link down. We should remove the nodelist entry from the
1302   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1303   *    outstanding PRLI command, then free the node entry.
1304   */
1305 static uint32_t
1306 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1307                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1308 {
1309         /* software abort outstanding PRLI */
1310         lpfc_els_abort(phba, ndlp, 1);
1311
1312         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1313         ndlp->nlp_state = NLP_STE_NPR_NODE;
1314         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1315         spin_lock_irq(phba->host->host_lock);
1316         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1317         spin_unlock_irq(phba->host->host_lock);
1318         return ndlp->nlp_state;
1319 }
1320
1321 static uint32_t
1322 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1323                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1324 {
1325         struct lpfc_iocbq *cmdiocb;
1326
1327         cmdiocb = (struct lpfc_iocbq *) arg;
1328
1329         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1330         return ndlp->nlp_state;
1331 }
1332
1333 static uint32_t
1334 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1335                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1336 {
1337         struct lpfc_iocbq *cmdiocb;
1338
1339         cmdiocb = (struct lpfc_iocbq *) arg;
1340
1341         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1342         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1343         return ndlp->nlp_state;
1344 }
1345
1346 static uint32_t
1347 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1348                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1349 {
1350         struct lpfc_iocbq *cmdiocb;
1351
1352         cmdiocb = (struct lpfc_iocbq *) arg;
1353
1354         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1355         return ndlp->nlp_state;
1356 }
1357
1358 static uint32_t
1359 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1360                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1361 {
1362         struct lpfc_iocbq *cmdiocb;
1363
1364         cmdiocb = (struct lpfc_iocbq *) arg;
1365
1366         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1367         return ndlp->nlp_state;
1368 }
1369
1370 static uint32_t
1371 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1372                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1373 {
1374         struct lpfc_iocbq *cmdiocb;
1375
1376         cmdiocb = (struct lpfc_iocbq *) arg;
1377
1378         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1379         return ndlp->nlp_state;
1380 }
1381
1382 static uint32_t
1383 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1384                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1385 {
1386         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1387         ndlp->nlp_state = NLP_STE_NPR_NODE;
1388         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1389         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1390         lpfc_disc_set_adisc(phba, ndlp);
1391
1392         return ndlp->nlp_state;
1393 }
1394
1395 static uint32_t
1396 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1397                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1398 {
1399         struct lpfc_iocbq *cmdiocb;
1400
1401         cmdiocb = (struct lpfc_iocbq *) arg;
1402
1403         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1404         return ndlp->nlp_state;
1405 }
1406
1407 static uint32_t
1408 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1409                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1410 {
1411         struct lpfc_iocbq *cmdiocb;
1412
1413         cmdiocb = (struct lpfc_iocbq *) arg;
1414
1415         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1416         return ndlp->nlp_state;
1417 }
1418
1419 static uint32_t
1420 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1421                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1422 {
1423         struct lpfc_iocbq *cmdiocb;
1424
1425         cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1428         return ndlp->nlp_state;
1429 }
1430
1431 static uint32_t
1432 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1433                             struct lpfc_nodelist * ndlp, void *arg,
1434                             uint32_t evt)
1435 {
1436         struct lpfc_iocbq *cmdiocb;
1437
1438         cmdiocb = (struct lpfc_iocbq *) arg;
1439
1440         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1441         return ndlp->nlp_state;
1442 }
1443
1444 static uint32_t
1445 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1446                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1447 {
1448         struct lpfc_iocbq *cmdiocb;
1449
1450         cmdiocb = (struct lpfc_iocbq *) arg;
1451
1452         /* flush the target */
1453         spin_lock_irq(phba->host->host_lock);
1454         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1455                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1456         spin_unlock_irq(phba->host->host_lock);
1457
1458         /* Treat like rcv logo */
1459         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1460         return ndlp->nlp_state;
1461 }
1462
1463 static uint32_t
1464 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1465                             struct lpfc_nodelist * ndlp, void *arg,
1466                             uint32_t evt)
1467 {
1468         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1469         ndlp->nlp_state = NLP_STE_NPR_NODE;
1470         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1471         spin_lock_irq(phba->host->host_lock);
1472         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1473         spin_unlock_irq(phba->host->host_lock);
1474         lpfc_disc_set_adisc(phba, ndlp);
1475         return ndlp->nlp_state;
1476 }
1477
1478 static uint32_t
1479 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1480                             struct lpfc_nodelist * ndlp, void *arg,
1481                             uint32_t evt)
1482 {
1483         struct lpfc_iocbq *cmdiocb;
1484
1485         cmdiocb = (struct lpfc_iocbq *) arg;
1486
1487         /* Ignore PLOGI if we have an outstanding LOGO */
1488         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1489                 return ndlp->nlp_state;
1490         }
1491
1492         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1493                 spin_lock_irq(phba->host->host_lock);
1494                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1495                 spin_unlock_irq(phba->host->host_lock);
1496                 return ndlp->nlp_state;
1497         }
1498
1499         /* send PLOGI immediately, move to PLOGI issue state */
1500         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1501                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1502                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1503                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1504                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1505         }
1506
1507         return ndlp->nlp_state;
1508 }
1509
1510 static uint32_t
1511 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1512                             struct lpfc_nodelist * ndlp, void *arg,
1513                             uint32_t evt)
1514 {
1515         struct lpfc_iocbq     *cmdiocb;
1516         struct ls_rjt          stat;
1517
1518         cmdiocb = (struct lpfc_iocbq *) arg;
1519
1520         memset(&stat, 0, sizeof (struct ls_rjt));
1521         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1522         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1523         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1524
1525         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1526                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1527                         spin_lock_irq(phba->host->host_lock);
1528                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1529                         spin_unlock_irq(phba->host->host_lock);
1530                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1531                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1532                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1533                         lpfc_issue_els_adisc(phba, ndlp, 0);
1534                 } else {
1535                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1536                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1537                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1538                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1539                 }
1540
1541         }
1542         return ndlp->nlp_state;
1543 }
1544
1545 static uint32_t
1546 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1547                             struct lpfc_nodelist * ndlp, void *arg,
1548                             uint32_t evt)
1549 {
1550         struct lpfc_iocbq     *cmdiocb;
1551
1552         cmdiocb = (struct lpfc_iocbq *) arg;
1553
1554         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1555         return ndlp->nlp_state;
1556 }
1557
1558 static uint32_t
1559 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1560                             struct lpfc_nodelist * ndlp, void *arg,
1561                             uint32_t evt)
1562 {
1563         struct lpfc_iocbq     *cmdiocb;
1564
1565         cmdiocb = (struct lpfc_iocbq *) arg;
1566
1567         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1568
1569         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1570                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1571                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1572                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1573                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1574                         lpfc_issue_els_adisc(phba, ndlp, 0);
1575                 } else {
1576                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1577                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1578                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1579                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1580                 }
1581         }
1582         return ndlp->nlp_state;
1583 }
1584
1585 static uint32_t
1586 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1587                             struct lpfc_nodelist * ndlp, void *arg,
1588                             uint32_t evt)
1589 {
1590         struct lpfc_iocbq     *cmdiocb;
1591
1592         cmdiocb = (struct lpfc_iocbq *) arg;
1593
1594         spin_lock_irq(phba->host->host_lock);
1595         ndlp->nlp_flag |= NLP_LOGO_ACC;
1596         spin_unlock_irq(phba->host->host_lock);
1597
1598         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1599
1600         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1601                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1602                 spin_lock_irq(phba->host->host_lock);
1603                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1604                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1605                 spin_unlock_irq(phba->host->host_lock);
1606                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1607         } else {
1608                 spin_lock_irq(phba->host->host_lock);
1609                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1610                 spin_unlock_irq(phba->host->host_lock);
1611         }
1612         return ndlp->nlp_state;
1613 }
1614
1615 static uint32_t
1616 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1617                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1618 {
1619         struct lpfc_iocbq *cmdiocb, *rspiocb;
1620
1621         cmdiocb = (struct lpfc_iocbq *) arg;
1622         rspiocb = cmdiocb->context_un.rsp_iocb;
1623         return ndlp->nlp_state;
1624 }
1625
1626 static uint32_t
1627 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1628                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1629 {
1630         struct lpfc_iocbq *cmdiocb, *rspiocb;
1631
1632         cmdiocb = (struct lpfc_iocbq *) arg;
1633         rspiocb = cmdiocb->context_un.rsp_iocb;
1634         return ndlp->nlp_state;
1635 }
1636
1637 static uint32_t
1638 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1639                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1640 {
1641         lpfc_unreg_rpi(phba, ndlp);
1642         /* This routine does nothing, just return the current state */
1643         return ndlp->nlp_state;
1644 }
1645
1646 static uint32_t
1647 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1648                             struct lpfc_nodelist * ndlp, void *arg,
1649                             uint32_t evt)
1650 {
1651         struct lpfc_iocbq *cmdiocb, *rspiocb;
1652
1653         cmdiocb = (struct lpfc_iocbq *) arg;
1654         rspiocb = cmdiocb->context_un.rsp_iocb;
1655         return ndlp->nlp_state;
1656 }
1657
1658 static uint32_t
1659 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1660                             struct lpfc_nodelist * ndlp, void *arg,
1661                             uint32_t evt)
1662 {
1663         LPFC_MBOXQ_t *pmb;
1664         MAILBOX_t *mb;
1665
1666         pmb = (LPFC_MBOXQ_t *) arg;
1667         mb = &pmb->mb;
1668
1669         if (!mb->mbxStatus)
1670                 ndlp->nlp_rpi = mb->un.varWords[0];
1671
1672         return ndlp->nlp_state;
1673 }
1674
1675 static uint32_t
1676 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1677                             struct lpfc_nodelist * ndlp, void *arg,
1678                             uint32_t evt)
1679 {
1680         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1681         return NLP_STE_FREED_NODE;
1682 }
1683
1684 static uint32_t
1685 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1686                             struct lpfc_nodelist * ndlp, void *arg,
1687                             uint32_t evt)
1688 {
1689         spin_lock_irq(phba->host->host_lock);
1690         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1691         spin_unlock_irq(phba->host->host_lock);
1692         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1693                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1694         }
1695         return ndlp->nlp_state;
1696 }
1697
1698
1699 /* This next section defines the NPort Discovery State Machine */
1700
1701 /* There are 4 different double linked lists nodelist entries can reside on.
1702  * The plogi list and adisc list are used when Link Up discovery or RSCN
1703  * processing is needed. Each list holds the nodes that we will send PLOGI
1704  * or ADISC on. These lists will keep track of what nodes will be effected
1705  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1706  * The unmapped_list will contain all nodes that we have successfully logged
1707  * into at the Fibre Channel level. The mapped_list will contain all nodes
1708  * that are mapped FCP targets.
1709  */
1710 /*
1711  * The bind list is a list of undiscovered (potentially non-existent) nodes
1712  * that we have saved binding information on. This information is used when
1713  * nodes transition from the unmapped to the mapped list.
1714  */
1715 /* For UNUSED_NODE state, the node has just been allocated .
1716  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1717  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1718  * and put on the unmapped list. For ADISC processing, the node is taken off
1719  * the ADISC list and placed on either the mapped or unmapped list (depending
1720  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1721  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1722  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1723  * node, the node is taken off the unmapped list. The binding list is checked
1724  * for a valid binding, or a binding is automatically assigned. If binding
1725  * assignment is unsuccessful, the node is left on the unmapped list. If
1726  * binding assignment is successful, the associated binding list entry (if
1727  * any) is removed, and the node is placed on the mapped list.
1728  */
1729 /*
1730  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1731  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1732  * expire, all effected nodes will receive a DEVICE_RM event.
1733  */
1734 /*
1735  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1736  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1737  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1738  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1739  * we will first process the ADISC list.  32 entries are processed initially and
1740  * ADISC is initited for each one.  Completions / Events for each node are
1741  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1742  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1743  * waiting, and the ADISC list count is identically 0, then we are done. For
1744  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1745  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1746  * list.  32 entries are processed initially and PLOGI is initited for each one.
1747  * Completions / Events for each node are funnelled thru the state machine.  As
1748  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1749  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1750  * indentically 0, then we are done. We have now completed discovery / RSCN
1751  * handling. Upon completion, ALL nodes should be on either the mapped or
1752  * unmapped lists.
1753  */
1754
1755 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1756      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1757         /* Action routine                  Event       Current State  */
1758         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1759         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1760         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1761         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1762         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1763         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1764         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1765         lpfc_disc_illegal,              /* CMPL_PRLI       */
1766         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1767         lpfc_disc_illegal,              /* CMPL_ADISC      */
1768         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1769         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1770         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1771
1772         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1773         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1774         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1775         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1776         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1777         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1778         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1779         lpfc_disc_illegal,              /* CMPL_PRLI       */
1780         lpfc_disc_illegal,              /* CMPL_LOGO       */
1781         lpfc_disc_illegal,              /* CMPL_ADISC      */
1782         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1783         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1784         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1785
1786         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1787         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1788         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1789         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1790         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1791         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1792         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1793         lpfc_disc_illegal,              /* CMPL_PRLI       */
1794         lpfc_disc_illegal,              /* CMPL_LOGO       */
1795         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1796         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1797         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1798         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1799
1800         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1801         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1802         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1803         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1804         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1805         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1806         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1807         lpfc_disc_illegal,              /* CMPL_PRLI       */
1808         lpfc_disc_illegal,              /* CMPL_LOGO       */
1809         lpfc_disc_illegal,              /* CMPL_ADISC      */
1810         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1811         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1812         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1813
1814         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1815         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1816         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1817         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1818         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1819         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1820         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1821         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1822         lpfc_disc_illegal,              /* CMPL_LOGO       */
1823         lpfc_disc_illegal,              /* CMPL_ADISC      */
1824         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1825         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1826         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1827
1828         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1829         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1830         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1831         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1832         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1833         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1834         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1835         lpfc_disc_illegal,              /* CMPL_PRLI       */
1836         lpfc_disc_illegal,              /* CMPL_LOGO       */
1837         lpfc_disc_illegal,              /* CMPL_ADISC      */
1838         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1839         lpfc_disc_illegal,              /* DEVICE_RM       */
1840         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1841
1842         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1843         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1844         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1845         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1846         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1847         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1848         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1849         lpfc_disc_illegal,              /* CMPL_PRLI       */
1850         lpfc_disc_illegal,              /* CMPL_LOGO       */
1851         lpfc_disc_illegal,              /* CMPL_ADISC      */
1852         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1853         lpfc_disc_illegal,              /* DEVICE_RM       */
1854         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1855
1856         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1857         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1858         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1859         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1860         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1861         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1862         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
1863         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
1864         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1865         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
1866         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1867         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1868         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1869 };
1870
1871 int
1872 lpfc_disc_state_machine(struct lpfc_hba * phba,
1873                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1874 {
1875         uint32_t cur_state, rc;
1876         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1877                          uint32_t);
1878
1879         ndlp->nlp_disc_refcnt++;
1880         cur_state = ndlp->nlp_state;
1881
1882         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1883         lpfc_printf_log(phba,
1884                         KERN_INFO,
1885                         LOG_DISCOVERY,
1886                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1887                         "Data: x%x\n",
1888                         phba->brd_no,
1889                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1890
1891         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1892         rc = (func) (phba, ndlp, arg, evt);
1893
1894         /* DSM out state <rc> on NPort <nlp_DID> */
1895         lpfc_printf_log(phba,
1896                        KERN_INFO,
1897                        LOG_DISCOVERY,
1898                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1899                        phba->brd_no,
1900                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1901
1902         ndlp->nlp_disc_refcnt--;
1903
1904         /* Check to see if ndlp removal is deferred */
1905         if ((ndlp->nlp_disc_refcnt == 0)
1906             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1907                 spin_lock_irq(phba->host->host_lock);
1908                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1909                 spin_unlock_irq(phba->host->host_lock);
1910                 lpfc_nlp_remove(phba, ndlp);
1911                 return NLP_STE_FREED_NODE;
1912         }
1913         if (rc == NLP_STE_FREED_NODE)
1914                 return NLP_STE_FREED_NODE;
1915         return rc;
1916 }