git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/lpfc/lpfc_nportdisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2006 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                       uint32_t els_cmd)
 470 {
 471         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 472         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 473          * PLOGIs during LOGO storms from a device.
 474          */
 475         ndlp->nlp_flag |= NLP_LOGO_ACC;
 476         if (els_cmd == ELS_CMD_PRLO)
 477                 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
 478         else
 479                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 480
 481         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 482                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 483                 /* Only try to re-login if this is NOT a Fabric Node */
 484                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 485                 spin_lock_irq(phba->host->host_lock);
 486                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 487                 spin_unlock_irq(phba->host->host_lock);
 488
 489                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 490                 ndlp->nlp_prev_state = ndlp->nlp_state;
 491                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 492                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 493         } else {
 494                 ndlp->nlp_prev_state = ndlp->nlp_state;
 495                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 496                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 497         }
 498
 499         spin_lock_irq(phba->host->host_lock);
 500         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 501         spin_unlock_irq(phba->host->host_lock);
 502         /* The driver has to wait until the ACC completes before it continues
 503          * processing the LOGO.  The action will resume in
 504          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 505          * unreg_login, the driver waits so the ACC does not get aborted.
 506          */
 507         return 0;
 508 }
 509
 510 static void
 511 lpfc_rcv_prli(struct lpfc_hba * phba,
 512                       struct lpfc_nodelist * ndlp,
 513                       struct lpfc_iocbq *cmdiocb)
 514 {
 515         struct lpfc_dmabuf *pcmd;
 516         uint32_t *lp;
 517         PRLI *npr;
 518         struct fc_rport *rport = ndlp->rport;
 519         u32 roles;
 520
 521         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 522         lp = (uint32_t *) pcmd->virt;
 523         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 524
 525         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 526         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 527         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 528             (npr->prliType == PRLI_FCP_TYPE)) {
 529                 if (npr->initiatorFunc)
 530                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 531                 if (npr->targetFunc)
 532                         ndlp->nlp_type |= NLP_FCP_TARGET;
 533                 if (npr->Retry)
 534                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 535         }
 536         if (rport) {
 537                 /* We need to update the rport role values */
 538                 roles = FC_RPORT_ROLE_UNKNOWN;
 539                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 540                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 541                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 542                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 543                 fc_remote_port_rolechg(rport, roles);
 544         }
 545 }
 546
 547 static uint32_t
 548 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 549                       struct lpfc_nodelist * ndlp)
 550 {
 551         /* Check config parameter use-adisc or FCP-2 */
 552         if ((phba->cfg_use_adisc == 0) &&
 553                 !(phba->fc_flag & FC_RSCN_MODE)) {
 554                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 555                         return 0;
 556         }
 557         spin_lock_irq(phba->host->host_lock);
 558         ndlp->nlp_flag |= NLP_NPR_ADISC;
 559         spin_unlock_irq(phba->host->host_lock);
 560         return 1;
 561 }
 562
 563 static uint32_t
 564 lpfc_disc_illegal(struct lpfc_hba * phba,
 565                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 566 {
 567         lpfc_printf_log(phba,
 568                         KERN_ERR,
 569                         LOG_DISCOVERY,
 570                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 571                         "state x%x Data: x%x x%x\n",
 572                         phba->brd_no,
 573                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 574                         ndlp->nlp_flag);
 575         return ndlp->nlp_state;
 576 }
 577
 578 /* Start of Discovery State Machine routines */
 579
 580 static uint32_t
 581 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 582                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 583 {
 584         struct lpfc_iocbq *cmdiocb;
 585
 586         cmdiocb = (struct lpfc_iocbq *) arg;
 587
 588         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 589                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 590                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 591                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 592                 return ndlp->nlp_state;
 593         }
 594         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 595         return NLP_STE_FREED_NODE;
 596 }
 597
 598 static uint32_t
 599 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 600                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 601 {
 602         lpfc_issue_els_logo(phba, ndlp, 0);
 603         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 604         return ndlp->nlp_state;
 605 }
 606
 607 static uint32_t
 608 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 609                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 610 {
 611         struct lpfc_iocbq     *cmdiocb;
 612
 613         cmdiocb = (struct lpfc_iocbq *) arg;
 614
 615         spin_lock_irq(phba->host->host_lock);
 616         ndlp->nlp_flag |= NLP_LOGO_ACC;
 617         spin_unlock_irq(phba->host->host_lock);
 618         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 619         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 620
 621         return ndlp->nlp_state;
 622 }
 623
 624 static uint32_t
 625 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 626                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 627 {
 628         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 629         return NLP_STE_FREED_NODE;
 630 }
 631
 632 static uint32_t
 633 lpfc_device_rm_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_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 642                            void *arg, uint32_t evt)
 643 {
 644         struct lpfc_iocbq *cmdiocb = arg;
 645         struct lpfc_dmabuf *pcmd;
 646         struct serv_parm *sp;
 647         uint32_t *lp;
 648         struct ls_rjt stat;
 649         int port_cmp;
 650
 651         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 652         lp = (uint32_t *) pcmd->virt;
 653         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 654
 655         memset(&stat, 0, sizeof (struct ls_rjt));
 656
 657         /* For a PLOGI, we only accept if our portname is less
 658          * than the remote portname.
 659          */
 660         phba->fc_stat.elsLogiCol++;
 661         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 662                           sizeof (struct lpfc_name));
 663
 664         if (port_cmp >= 0) {
 665                 /* Reject this request because the remote node will accept
 666                    ours */
 667                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 668                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 669                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 670         } else {
 671                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 672         } /* if our portname was less */
 673
 674         return ndlp->nlp_state;
 675 }
 676
 677 static uint32_t
 678 lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
 679                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 680 {
 681         struct lpfc_iocbq     *cmdiocb;
 682
 683         cmdiocb = (struct lpfc_iocbq *) arg;
 684
 685         /* software abort outstanding PLOGI */
 686         lpfc_els_abort(phba, ndlp, 1);
 687
 688         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
 689         return ndlp->nlp_state;
 690 }
 691
 692 static uint32_t
 693 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 694                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 695 {
 696         struct lpfc_iocbq     *cmdiocb;
 697
 698         cmdiocb = (struct lpfc_iocbq *) arg;
 699
 700         /* software abort outstanding PLOGI */
 701         lpfc_els_abort(phba, ndlp, 1);
 702
 703         if (evt == NLP_EVT_RCV_LOGO) {
 704                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 705         } else {
 706                 lpfc_issue_els_logo(phba, ndlp, 0);
 707         }
 708
 709         /* Put ndlp in npr list set plogi timer for 1 sec */
 710         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 711         spin_lock_irq(phba->host->host_lock);
 712         ndlp->nlp_flag |= NLP_DELAY_TMO;
 713         spin_unlock_irq(phba->host->host_lock);
 714         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 715         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 716         ndlp->nlp_state = NLP_STE_NPR_NODE;
 717         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 718
 719         return ndlp->nlp_state;
 720 }
 721
 722 static uint32_t
 723 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 724                             struct lpfc_nodelist * ndlp, void *arg,
 725                             uint32_t evt)
 726 {
 727         struct lpfc_iocbq *cmdiocb, *rspiocb;
 728         struct lpfc_dmabuf *pcmd, *prsp;
 729         uint32_t *lp;
 730         IOCB_t *irsp;
 731         struct serv_parm *sp;
 732         LPFC_MBOXQ_t *mbox;
 733
 734         cmdiocb = (struct lpfc_iocbq *) arg;
 735         rspiocb = cmdiocb->context_un.rsp_iocb;
 736
 737         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 738                 /* Recovery from PLOGI collision logic */
 739                 return ndlp->nlp_state;
 740         }
 741
 742         irsp = &rspiocb->iocb;
 743
 744         if (irsp->ulpStatus)
 745                 goto out;
 746
 747         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 748
 749         prsp = list_get_first(&pcmd->list,
 750                               struct lpfc_dmabuf,
 751                               list);
 752         lp = (uint32_t *) prsp->virt;
 753
 754         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 755         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 756                 goto out;
 757
 758         /* PLOGI chkparm OK */
 759         lpfc_printf_log(phba,
 760                         KERN_INFO,
 761                         LOG_ELS,
 762                         "%d:0121 PLOGI chkparm OK "
 763                         "Data: x%x x%x x%x x%x\n",
 764                         phba->brd_no,
 765                         ndlp->nlp_DID, ndlp->nlp_state,
 766                         ndlp->nlp_flag, ndlp->nlp_rpi);
 767
 768         if ((phba->cfg_fcp_class == 2) &&
 769             (sp->cls2.classValid)) {
 770                 ndlp->nlp_fcp_info |= CLASS2;
 771         } else {
 772                 ndlp->nlp_fcp_info |= CLASS3;
 773         }
 774         ndlp->nlp_class_sup = 0;
 775         if (sp->cls1.classValid)
 776                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 777         if (sp->cls2.classValid)
 778                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 779         if (sp->cls3.classValid)
 780                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 781         if (sp->cls4.classValid)
 782                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 783         ndlp->nlp_maxframe =
 784                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 785                 sp->cmn.bbRcvSizeLsb;
 786
 787         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 788                                    GFP_KERNEL)))
 789                 goto out;
 790
 791         lpfc_unreg_rpi(phba, ndlp);
 792         if (lpfc_reg_login
 793             (phba, irsp->un.elsreq64.remoteID,
 794              (uint8_t *) sp, mbox, 0) == 0) {
 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         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 836                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 837                 return ndlp->nlp_state;
 838         }
 839         else {
 840                 /* software abort outstanding PLOGI */
 841                 lpfc_els_abort(phba, ndlp, 1);
 842
 843                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 844                 return NLP_STE_FREED_NODE;
 845         }
 846 }
 847
 848 static uint32_t
 849 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 850                             struct lpfc_nodelist * ndlp, void *arg,
 851                             uint32_t evt)
 852 {
 853         /* software abort outstanding PLOGI */
 854         lpfc_els_abort(phba, ndlp, 1);
 855
 856         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 857         ndlp->nlp_state = NLP_STE_NPR_NODE;
 858         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 859         spin_lock_irq(phba->host->host_lock);
 860         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 861         spin_unlock_irq(phba->host->host_lock);
 862
 863         return ndlp->nlp_state;
 864 }
 865
 866 static uint32_t
 867 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 868                             struct lpfc_nodelist * ndlp, void *arg,
 869                             uint32_t evt)
 870 {
 871         struct lpfc_iocbq *cmdiocb;
 872
 873         /* software abort outstanding ADISC */
 874         lpfc_els_abort(phba, ndlp, 1);
 875
 876         cmdiocb = (struct lpfc_iocbq *) arg;
 877
 878         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 879                 return ndlp->nlp_state;
 880         }
 881         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 882         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 883         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 884         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
 885
 886         return ndlp->nlp_state;
 887 }
 888
 889 static uint32_t
 890 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 891                             struct lpfc_nodelist * ndlp, void *arg,
 892                             uint32_t evt)
 893 {
 894         struct lpfc_iocbq *cmdiocb;
 895
 896         cmdiocb = (struct lpfc_iocbq *) arg;
 897
 898         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 899         return ndlp->nlp_state;
 900 }
 901
 902 static uint32_t
 903 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 904                             struct lpfc_nodelist * ndlp, void *arg,
 905                             uint32_t evt)
 906 {
 907         struct lpfc_iocbq *cmdiocb;
 908
 909         cmdiocb = (struct lpfc_iocbq *) arg;
 910
 911         /* software abort outstanding ADISC */
 912         lpfc_els_abort(phba, ndlp, 0);
 913
 914         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
 915         return ndlp->nlp_state;
 916 }
 917
 918 static uint32_t
 919 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 920                             struct lpfc_nodelist * ndlp, void *arg,
 921                             uint32_t evt)
 922 {
 923         struct lpfc_iocbq *cmdiocb;
 924
 925         cmdiocb = (struct lpfc_iocbq *) arg;
 926
 927         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 928         return ndlp->nlp_state;
 929 }
 930
 931 static uint32_t
 932 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 933                             struct lpfc_nodelist * ndlp, void *arg,
 934                             uint32_t evt)
 935 {
 936         struct lpfc_iocbq *cmdiocb;
 937
 938         cmdiocb = (struct lpfc_iocbq *) arg;
 939
 940         /* Treat like rcv logo */
 941         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
 942         return ndlp->nlp_state;
 943 }
 944
 945 static uint32_t
 946 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 947                             struct lpfc_nodelist * ndlp, void *arg,
 948                             uint32_t evt)
 949 {
 950         struct lpfc_iocbq *cmdiocb, *rspiocb;
 951         IOCB_t *irsp;
 952         ADISC *ap;
 953
 954         cmdiocb = (struct lpfc_iocbq *) arg;
 955         rspiocb = cmdiocb->context_un.rsp_iocb;
 956
 957         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 958         irsp = &rspiocb->iocb;
 959
 960         if ((irsp->ulpStatus) ||
 961                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 962                 /* 1 sec timeout */
 963                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 964                 spin_lock_irq(phba->host->host_lock);
 965                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 966                 spin_unlock_irq(phba->host->host_lock);
 967                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 968
 969                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 970                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 971
 972                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 973                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 974                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 975                 lpfc_unreg_rpi(phba, ndlp);
 976                 return ndlp->nlp_state;
 977         }
 978
 979         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 980                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 981                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 982                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 983         } else {
 984                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 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         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 997                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 998                 return ndlp->nlp_state;
 999         }
1000         else {
1001                 /* software abort outstanding ADISC */
1002                 lpfc_els_abort(phba, ndlp, 1);
1003
1004                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1005                 return NLP_STE_FREED_NODE;
1006         }
1007 }
1008
1009 static uint32_t
1010 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
1011                             struct lpfc_nodelist * ndlp, void *arg,
1012                             uint32_t evt)
1013 {
1014         /* software abort outstanding ADISC */
1015         lpfc_els_abort(phba, ndlp, 1);
1016
1017         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1018         ndlp->nlp_state = NLP_STE_NPR_NODE;
1019         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1020         spin_lock_irq(phba->host->host_lock);
1021         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1022         ndlp->nlp_flag |= NLP_NPR_ADISC;
1023         spin_unlock_irq(phba->host->host_lock);
1024
1025         return ndlp->nlp_state;
1026 }
1027
1028 static uint32_t
1029 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1030                               struct lpfc_nodelist * ndlp, void *arg,
1031                               uint32_t evt)
1032 {
1033         struct lpfc_iocbq *cmdiocb;
1034
1035         cmdiocb = (struct lpfc_iocbq *) arg;
1036
1037         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1038         return ndlp->nlp_state;
1039 }
1040
1041 static uint32_t
1042 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1043                              struct lpfc_nodelist * ndlp, void *arg,
1044                              uint32_t evt)
1045 {
1046         struct lpfc_iocbq *cmdiocb;
1047
1048         cmdiocb = (struct lpfc_iocbq *) arg;
1049
1050         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1051         return ndlp->nlp_state;
1052 }
1053
1054 static uint32_t
1055 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1056                              struct lpfc_nodelist * ndlp, void *arg,
1057                              uint32_t evt)
1058 {
1059         struct lpfc_iocbq *cmdiocb;
1060
1061         cmdiocb = (struct lpfc_iocbq *) arg;
1062
1063         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1064         return ndlp->nlp_state;
1065 }
1066
1067 static uint32_t
1068 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1069                                struct lpfc_nodelist * ndlp, void *arg,
1070                                uint32_t evt)
1071 {
1072         struct lpfc_iocbq *cmdiocb;
1073
1074         cmdiocb = (struct lpfc_iocbq *) arg;
1075
1076         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1077         return ndlp->nlp_state;
1078 }
1079
1080 static uint32_t
1081 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1082                              struct lpfc_nodelist * ndlp, void *arg,
1083                              uint32_t evt)
1084 {
1085         struct lpfc_iocbq *cmdiocb;
1086
1087         cmdiocb = (struct lpfc_iocbq *) arg;
1088         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1089         return ndlp->nlp_state;
1090 }
1091
1092 static uint32_t
1093 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1094                                   struct lpfc_nodelist * ndlp,
1095                                   void *arg, uint32_t evt)
1096 {
1097         LPFC_MBOXQ_t *pmb;
1098         MAILBOX_t *mb;
1099         uint32_t did;
1100
1101         pmb = (LPFC_MBOXQ_t *) arg;
1102         mb = &pmb->mb;
1103         did = mb->un.varWords[1];
1104         if (mb->mbxStatus) {
1105                 /* RegLogin failed */
1106                 lpfc_printf_log(phba,
1107                                 KERN_ERR,
1108                                 LOG_DISCOVERY,
1109                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1110                                 phba->brd_no,
1111                                 did, mb->mbxStatus, phba->hba_state);
1112
1113                 /*
1114                  * If RegLogin failed due to lack of HBA resources do not
1115                  * retry discovery.
1116                  */
1117                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1118                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1119                         ndlp->nlp_state = NLP_STE_UNUSED_NODE;
1120                         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
1121                         return ndlp->nlp_state;
1122                 }
1123
1124                 /* Put ndlp in npr list set plogi timer for 1 sec */
1125                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1126                 spin_lock_irq(phba->host->host_lock);
1127                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1128                 spin_unlock_irq(phba->host->host_lock);
1129                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1130
1131                 lpfc_issue_els_logo(phba, ndlp, 0);
1132                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1133                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1134                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1135                 return ndlp->nlp_state;
1136         }
1137
1138         ndlp->nlp_rpi = mb->un.varWords[0];
1139
1140         /* Only if we are not a fabric nport do we issue PRLI */
1141         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1142                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1143                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1144                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1145                 lpfc_issue_els_prli(phba, ndlp, 0);
1146         } else {
1147                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1148                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1149                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1150         }
1151         return ndlp->nlp_state;
1152 }
1153
1154 static uint32_t
1155 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1156                               struct lpfc_nodelist * ndlp, void *arg,
1157                               uint32_t evt)
1158 {
1159         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1160                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1161                 return ndlp->nlp_state;
1162         }
1163         else {
1164                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1165                 return NLP_STE_FREED_NODE;
1166         }
1167 }
1168
1169 static uint32_t
1170 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1171                                struct lpfc_nodelist * ndlp, void *arg,
1172                                uint32_t evt)
1173 {
1174         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1175         ndlp->nlp_state = NLP_STE_NPR_NODE;
1176         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1177         spin_lock_irq(phba->host->host_lock);
1178         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1179         spin_unlock_irq(phba->host->host_lock);
1180         return ndlp->nlp_state;
1181 }
1182
1183 static uint32_t
1184 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1185                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1186 {
1187         struct lpfc_iocbq *cmdiocb;
1188
1189         cmdiocb = (struct lpfc_iocbq *) arg;
1190
1191         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1192         return ndlp->nlp_state;
1193 }
1194
1195 static uint32_t
1196 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1197                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1198 {
1199         struct lpfc_iocbq *cmdiocb;
1200
1201         cmdiocb = (struct lpfc_iocbq *) arg;
1202
1203         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1204         return ndlp->nlp_state;
1205 }
1206
1207 static uint32_t
1208 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1209                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1210 {
1211         struct lpfc_iocbq *cmdiocb;
1212
1213         cmdiocb = (struct lpfc_iocbq *) arg;
1214
1215         /* Software abort outstanding PRLI before sending acc */
1216         lpfc_els_abort(phba, ndlp, 1);
1217
1218         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1219         return ndlp->nlp_state;
1220 }
1221
1222 static uint32_t
1223 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1224                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1225 {
1226         struct lpfc_iocbq *cmdiocb;
1227
1228         cmdiocb = (struct lpfc_iocbq *) arg;
1229
1230         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1231         return ndlp->nlp_state;
1232 }
1233
1234 /* This routine is envoked when we rcv a PRLO request from a nport
1235  * we are logged into.  We should send back a PRLO rsp setting the
1236  * appropriate bits.
1237  * NEXT STATE = PRLI_ISSUE
1238  */
1239 static uint32_t
1240 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1241                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1242 {
1243         struct lpfc_iocbq *cmdiocb;
1244
1245         cmdiocb = (struct lpfc_iocbq *) arg;
1246         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1247         return ndlp->nlp_state;
1248 }
1249
1250 static uint32_t
1251 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1252                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1253 {
1254         struct lpfc_iocbq *cmdiocb, *rspiocb;
1255         IOCB_t *irsp;
1256         PRLI *npr;
1257
1258         cmdiocb = (struct lpfc_iocbq *) arg;
1259         rspiocb = cmdiocb->context_un.rsp_iocb;
1260         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1261
1262         irsp = &rspiocb->iocb;
1263         if (irsp->ulpStatus) {
1264                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1265                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1266                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1267                 return ndlp->nlp_state;
1268         }
1269
1270         /* Check out PRLI rsp */
1271         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1272         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1273         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1274             (npr->prliType == PRLI_FCP_TYPE)) {
1275                 if (npr->initiatorFunc)
1276                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1277                 if (npr->targetFunc)
1278                         ndlp->nlp_type |= NLP_FCP_TARGET;
1279                 if (npr->Retry)
1280                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1281         }
1282
1283         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1284         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1285         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1286         return ndlp->nlp_state;
1287 }
1288
1289 /*! lpfc_device_rm_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   *    This routine is envoked when we a request to remove a nport we are in the
1301   *    process of PRLIing. We should software abort outstanding prli, unreg
1302   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1303   *    on plogi list so it can be freed when LOGO completes.
1304   *
1305   */
1306 static uint32_t
1307 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1308                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1309 {
1310         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1311                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1312                 return ndlp->nlp_state;
1313         }
1314         else {
1315                 /* software abort outstanding PLOGI */
1316                 lpfc_els_abort(phba, ndlp, 1);
1317
1318                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1319                 return NLP_STE_FREED_NODE;
1320         }
1321 }
1322
1323
1324 /*! lpfc_device_recov_prli_issue
1325   *
1326   * \pre
1327   * \post
1328   * \param   phba
1329   * \param   ndlp
1330   * \param   arg
1331   * \param   evt
1332   * \return  uint32_t
1333   *
1334   * \b Description:
1335   *    The routine is envoked when the state of a device is unknown, like
1336   *    during a link down. We should remove the nodelist entry from the
1337   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1338   *    outstanding PRLI command, then free the node entry.
1339   */
1340 static uint32_t
1341 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1342                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1343 {
1344         /* software abort outstanding PRLI */
1345         lpfc_els_abort(phba, ndlp, 1);
1346
1347         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1348         ndlp->nlp_state = NLP_STE_NPR_NODE;
1349         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1350         spin_lock_irq(phba->host->host_lock);
1351         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1352         spin_unlock_irq(phba->host->host_lock);
1353         return ndlp->nlp_state;
1354 }
1355
1356 static uint32_t
1357 lpfc_rcv_plogi_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_plogi(phba, ndlp, cmdiocb);
1365         return ndlp->nlp_state;
1366 }
1367
1368 static uint32_t
1369 lpfc_rcv_prli_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_rcv_prli(phba, ndlp, cmdiocb);
1377         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1378         return ndlp->nlp_state;
1379 }
1380
1381 static uint32_t
1382 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1383                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1384 {
1385         struct lpfc_iocbq *cmdiocb;
1386
1387         cmdiocb = (struct lpfc_iocbq *) arg;
1388
1389         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1390         return ndlp->nlp_state;
1391 }
1392
1393 static uint32_t
1394 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1395                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1396 {
1397         struct lpfc_iocbq *cmdiocb;
1398
1399         cmdiocb = (struct lpfc_iocbq *) arg;
1400
1401         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1402         return ndlp->nlp_state;
1403 }
1404
1405 static uint32_t
1406 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1407                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1408 {
1409         struct lpfc_iocbq *cmdiocb;
1410
1411         cmdiocb = (struct lpfc_iocbq *) arg;
1412
1413         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1414         return ndlp->nlp_state;
1415 }
1416
1417 static uint32_t
1418 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1419                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1420 {
1421         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1422         ndlp->nlp_state = NLP_STE_NPR_NODE;
1423         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1424         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1425         lpfc_disc_set_adisc(phba, ndlp);
1426
1427         return ndlp->nlp_state;
1428 }
1429
1430 static uint32_t
1431 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1432                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1433 {
1434         struct lpfc_iocbq *cmdiocb;
1435
1436         cmdiocb = (struct lpfc_iocbq *) arg;
1437
1438         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1439         return ndlp->nlp_state;
1440 }
1441
1442 static uint32_t
1443 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1444                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1445 {
1446         struct lpfc_iocbq *cmdiocb;
1447
1448         cmdiocb = (struct lpfc_iocbq *) arg;
1449
1450         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1451         return ndlp->nlp_state;
1452 }
1453
1454 static uint32_t
1455 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1456                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1457 {
1458         struct lpfc_iocbq *cmdiocb;
1459
1460         cmdiocb = (struct lpfc_iocbq *) arg;
1461
1462         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1463         return ndlp->nlp_state;
1464 }
1465
1466 static uint32_t
1467 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1468                             struct lpfc_nodelist * ndlp, void *arg,
1469                             uint32_t evt)
1470 {
1471         struct lpfc_iocbq *cmdiocb;
1472
1473         cmdiocb = (struct lpfc_iocbq *) arg;
1474
1475         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1476         return ndlp->nlp_state;
1477 }
1478
1479 static uint32_t
1480 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1481                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1482 {
1483         struct lpfc_iocbq *cmdiocb;
1484
1485         cmdiocb = (struct lpfc_iocbq *) arg;
1486
1487         /* flush the target */
1488         spin_lock_irq(phba->host->host_lock);
1489         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1490                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1491         spin_unlock_irq(phba->host->host_lock);
1492
1493         /* Treat like rcv logo */
1494         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
1495         return ndlp->nlp_state;
1496 }
1497
1498 static uint32_t
1499 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1500                             struct lpfc_nodelist * ndlp, void *arg,
1501                             uint32_t evt)
1502 {
1503         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1504         ndlp->nlp_state = NLP_STE_NPR_NODE;
1505         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1506         spin_lock_irq(phba->host->host_lock);
1507         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1508         spin_unlock_irq(phba->host->host_lock);
1509         lpfc_disc_set_adisc(phba, ndlp);
1510         return ndlp->nlp_state;
1511 }
1512
1513 static uint32_t
1514 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1515                             struct lpfc_nodelist * ndlp, void *arg,
1516                             uint32_t evt)
1517 {
1518         struct lpfc_iocbq *cmdiocb;
1519
1520         cmdiocb = (struct lpfc_iocbq *) arg;
1521
1522         /* Ignore PLOGI if we have an outstanding LOGO */
1523         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1524                 return ndlp->nlp_state;
1525         }
1526
1527         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1528                 spin_lock_irq(phba->host->host_lock);
1529                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1530                 spin_unlock_irq(phba->host->host_lock);
1531                 return ndlp->nlp_state;
1532         }
1533
1534         /* send PLOGI immediately, move to PLOGI issue state */
1535         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1536                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1537                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1538                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1539                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1540         }
1541
1542         return ndlp->nlp_state;
1543 }
1544
1545 static uint32_t
1546 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1547                             struct lpfc_nodelist * ndlp, void *arg,
1548                             uint32_t evt)
1549 {
1550         struct lpfc_iocbq     *cmdiocb;
1551         struct ls_rjt          stat;
1552
1553         cmdiocb = (struct lpfc_iocbq *) arg;
1554
1555         memset(&stat, 0, sizeof (struct ls_rjt));
1556         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1557         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1558         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1559
1560         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1561                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1562                         spin_lock_irq(phba->host->host_lock);
1563                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1564                         spin_unlock_irq(phba->host->host_lock);
1565                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1566                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1567                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1568                         lpfc_issue_els_adisc(phba, ndlp, 0);
1569                 } else {
1570                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1571                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1572                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1573                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1574                 }
1575
1576         }
1577         return ndlp->nlp_state;
1578 }
1579
1580 static uint32_t
1581 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1582                             struct lpfc_nodelist * ndlp, void *arg,
1583                             uint32_t evt)
1584 {
1585         struct lpfc_iocbq     *cmdiocb;
1586
1587         cmdiocb = (struct lpfc_iocbq *) arg;
1588
1589         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1590         return ndlp->nlp_state;
1591 }
1592
1593 static uint32_t
1594 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1595                             struct lpfc_nodelist * ndlp, void *arg,
1596                             uint32_t evt)
1597 {
1598         struct lpfc_iocbq     *cmdiocb;
1599
1600         cmdiocb = (struct lpfc_iocbq *) arg;
1601
1602         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1603
1604         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1605                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1606                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1607                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1608                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1609                         lpfc_issue_els_adisc(phba, ndlp, 0);
1610                 } else {
1611                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1612                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1613                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1614                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1615                 }
1616         }
1617         return ndlp->nlp_state;
1618 }
1619
1620 static uint32_t
1621 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1622                             struct lpfc_nodelist * ndlp, void *arg,
1623                             uint32_t evt)
1624 {
1625         struct lpfc_iocbq     *cmdiocb;
1626
1627         cmdiocb = (struct lpfc_iocbq *) arg;
1628
1629         spin_lock_irq(phba->host->host_lock);
1630         ndlp->nlp_flag |= NLP_LOGO_ACC;
1631         spin_unlock_irq(phba->host->host_lock);
1632
1633         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1634
1635         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1636                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1637                 spin_lock_irq(phba->host->host_lock);
1638                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1639                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1640                 spin_unlock_irq(phba->host->host_lock);
1641                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1642         } else {
1643                 spin_lock_irq(phba->host->host_lock);
1644                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1645                 spin_unlock_irq(phba->host->host_lock);
1646         }
1647         return ndlp->nlp_state;
1648 }
1649
1650 static uint32_t
1651 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1652                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1653 {
1654         struct lpfc_iocbq *cmdiocb, *rspiocb;
1655         IOCB_t *irsp;
1656
1657         cmdiocb = (struct lpfc_iocbq *) arg;
1658         rspiocb = cmdiocb->context_un.rsp_iocb;
1659
1660         irsp = &rspiocb->iocb;
1661         if (irsp->ulpStatus) {
1662                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1663                 return NLP_STE_FREED_NODE;
1664         }
1665         return ndlp->nlp_state;
1666 }
1667
1668 static uint32_t
1669 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1670                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1671 {
1672         struct lpfc_iocbq *cmdiocb, *rspiocb;
1673         IOCB_t *irsp;
1674
1675         cmdiocb = (struct lpfc_iocbq *) arg;
1676         rspiocb = cmdiocb->context_un.rsp_iocb;
1677
1678         irsp = &rspiocb->iocb;
1679         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1680                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1681                 return NLP_STE_FREED_NODE;
1682         }
1683         return ndlp->nlp_state;
1684 }
1685
1686 static uint32_t
1687 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1688                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1689 {
1690         lpfc_unreg_rpi(phba, ndlp);
1691         /* This routine does nothing, just return the current state */
1692         return ndlp->nlp_state;
1693 }
1694
1695 static uint32_t
1696 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1697                             struct lpfc_nodelist * ndlp, void *arg,
1698                             uint32_t evt)
1699 {
1700         struct lpfc_iocbq *cmdiocb, *rspiocb;
1701         IOCB_t *irsp;
1702
1703         cmdiocb = (struct lpfc_iocbq *) arg;
1704         rspiocb = cmdiocb->context_un.rsp_iocb;
1705
1706         irsp = &rspiocb->iocb;
1707         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1708                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1709                 return NLP_STE_FREED_NODE;
1710         }
1711         return ndlp->nlp_state;
1712 }
1713
1714 static uint32_t
1715 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1716                             struct lpfc_nodelist * ndlp, void *arg,
1717                             uint32_t evt)
1718 {
1719         LPFC_MBOXQ_t *pmb;
1720         MAILBOX_t *mb;
1721
1722         pmb = (LPFC_MBOXQ_t *) arg;
1723         mb = &pmb->mb;
1724
1725         if (!mb->mbxStatus)
1726                 ndlp->nlp_rpi = mb->un.varWords[0];
1727         else {
1728                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1729                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1730                         return NLP_STE_FREED_NODE;
1731                 }
1732         }
1733         return ndlp->nlp_state;
1734 }
1735
1736 static uint32_t
1737 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1738                             struct lpfc_nodelist * ndlp, void *arg,
1739                             uint32_t evt)
1740 {
1741         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1742                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1743                 return ndlp->nlp_state;
1744         }
1745         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1746         return NLP_STE_FREED_NODE;
1747 }
1748
1749 static uint32_t
1750 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1751                             struct lpfc_nodelist * ndlp, void *arg,
1752                             uint32_t evt)
1753 {
1754         spin_lock_irq(phba->host->host_lock);
1755         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1756         spin_unlock_irq(phba->host->host_lock);
1757         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1758                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1759         }
1760         return ndlp->nlp_state;
1761 }
1762
1763
1764 /* This next section defines the NPort Discovery State Machine */
1765
1766 /* There are 4 different double linked lists nodelist entries can reside on.
1767  * The plogi list and adisc list are used when Link Up discovery or RSCN
1768  * processing is needed. Each list holds the nodes that we will send PLOGI
1769  * or ADISC on. These lists will keep track of what nodes will be effected
1770  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1771  * The unmapped_list will contain all nodes that we have successfully logged
1772  * into at the Fibre Channel level. The mapped_list will contain all nodes
1773  * that are mapped FCP targets.
1774  */
1775 /*
1776  * The bind list is a list of undiscovered (potentially non-existent) nodes
1777  * that we have saved binding information on. This information is used when
1778  * nodes transition from the unmapped to the mapped list.
1779  */
1780 /* For UNUSED_NODE state, the node has just been allocated .
1781  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1782  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1783  * and put on the unmapped list. For ADISC processing, the node is taken off
1784  * the ADISC list and placed on either the mapped or unmapped list (depending
1785  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1786  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1787  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1788  * node, the node is taken off the unmapped list. The binding list is checked
1789  * for a valid binding, or a binding is automatically assigned. If binding
1790  * assignment is unsuccessful, the node is left on the unmapped list. If
1791  * binding assignment is successful, the associated binding list entry (if
1792  * any) is removed, and the node is placed on the mapped list.
1793  */
1794 /*
1795  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1796  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1797  * expire, all effected nodes will receive a DEVICE_RM event.
1798  */
1799 /*
1800  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1801  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1802  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1803  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1804  * we will first process the ADISC list.  32 entries are processed initially and
1805  * ADISC is initited for each one.  Completions / Events for each node are
1806  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1807  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1808  * waiting, and the ADISC list count is identically 0, then we are done. For
1809  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1810  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1811  * list.  32 entries are processed initially and PLOGI is initited for each one.
1812  * Completions / Events for each node are funnelled thru the state machine.  As
1813  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1814  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1815  * indentically 0, then we are done. We have now completed discovery / RSCN
1816  * handling. Upon completion, ALL nodes should be on either the mapped or
1817  * unmapped lists.
1818  */
1819
1820 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1821      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1822         /* Action routine                  Event       Current State  */
1823         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1824         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1825         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1826         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1827         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1828         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1829         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1830         lpfc_disc_illegal,              /* CMPL_PRLI       */
1831         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1832         lpfc_disc_illegal,              /* CMPL_ADISC      */
1833         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1834         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1835         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1836
1837         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1838         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1839         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1840         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1841         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1842         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1843         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1844         lpfc_disc_illegal,              /* CMPL_PRLI       */
1845         lpfc_disc_illegal,              /* CMPL_LOGO       */
1846         lpfc_disc_illegal,              /* CMPL_ADISC      */
1847         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1848         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1849         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1850
1851         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1852         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1853         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1854         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1855         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1856         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1857         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1858         lpfc_disc_illegal,              /* CMPL_PRLI       */
1859         lpfc_disc_illegal,              /* CMPL_LOGO       */
1860         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1861         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1862         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1863         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1864
1865         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1866         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1867         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1868         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1869         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1870         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1871         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1872         lpfc_disc_illegal,              /* CMPL_PRLI       */
1873         lpfc_disc_illegal,              /* CMPL_LOGO       */
1874         lpfc_disc_illegal,              /* CMPL_ADISC      */
1875         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1876         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1877         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1878
1879         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1880         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1881         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1882         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1883         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1884         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1885         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1886         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1887         lpfc_disc_illegal,              /* CMPL_LOGO       */
1888         lpfc_disc_illegal,              /* CMPL_ADISC      */
1889         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1890         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1891         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1892
1893         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1894         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1895         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1896         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1897         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1898         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1899         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1900         lpfc_disc_illegal,              /* CMPL_PRLI       */
1901         lpfc_disc_illegal,              /* CMPL_LOGO       */
1902         lpfc_disc_illegal,              /* CMPL_ADISC      */
1903         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1904         lpfc_disc_illegal,              /* DEVICE_RM       */
1905         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1906
1907         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1908         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1909         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1910         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1911         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1912         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1913         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1914         lpfc_disc_illegal,              /* CMPL_PRLI       */
1915         lpfc_disc_illegal,              /* CMPL_LOGO       */
1916         lpfc_disc_illegal,              /* CMPL_ADISC      */
1917         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1918         lpfc_disc_illegal,              /* DEVICE_RM       */
1919         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1920
1921         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1922         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1923         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1924         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1925         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1926         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1927         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
1928         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
1929         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1930         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
1931         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1932         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1933         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1934 };
1935
1936 int
1937 lpfc_disc_state_machine(struct lpfc_hba * phba,
1938                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1939 {
1940         uint32_t cur_state, rc;
1941         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1942                          uint32_t);
1943
1944         ndlp->nlp_disc_refcnt++;
1945         cur_state = ndlp->nlp_state;
1946
1947         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1948         lpfc_printf_log(phba,
1949                         KERN_INFO,
1950                         LOG_DISCOVERY,
1951                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1952                         "Data: x%x\n",
1953                         phba->brd_no,
1954                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1955
1956         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1957         rc = (func) (phba, ndlp, arg, evt);
1958
1959         /* DSM out state <rc> on NPort <nlp_DID> */
1960         lpfc_printf_log(phba,
1961                        KERN_INFO,
1962                        LOG_DISCOVERY,
1963                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1964                        phba->brd_no,
1965                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1966
1967         ndlp->nlp_disc_refcnt--;
1968
1969         /* Check to see if ndlp removal is deferred */
1970         if ((ndlp->nlp_disc_refcnt == 0)
1971             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1972                 spin_lock_irq(phba->host->host_lock);
1973                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1974                 spin_unlock_irq(phba->host->host_lock);
1975                 lpfc_nlp_remove(phba, ndlp);
1976                 return NLP_STE_FREED_NODE;
1977         }
1978         if (rc == NLP_STE_FREED_NODE)
1979                 return NLP_STE_FREED_NODE;
1980         return rc;
1981 }