SAFE public projects git trees. - safe/jmp/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 {
 173         LIST_HEAD(completions);
 174         struct lpfc_sli *psli;
 175         struct lpfc_sli_ring *pring;
 176         struct lpfc_iocbq *iocb, *next_iocb;
 177         IOCB_t *cmd;
 178
 179         /* Abort outstanding I/O on NPort <nlp_DID> */
 180         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 181                         "%d:0205 Abort outstanding I/O on NPort x%x "
 182                         "Data: x%x x%x x%x\n",
 183                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 184                         ndlp->nlp_state, ndlp->nlp_rpi);
 185
 186         psli = &phba->sli;
 187         pring = &psli->ring[LPFC_ELS_RING];
 188
 189         /* First check the txq */
 190         spin_lock_irq(phba->host->host_lock);
 191         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 192                 /* Check to see if iocb matches the nport we are looking
 193                    for */
 194                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 195                         /* It matches, so deque and call compl with an
 196                            error */
 197                         list_move_tail(&iocb->list, &completions);
 198                         pring->txq_cnt--;
 199                 }
 200         }
 201
 202         /* Next check the txcmplq */
 203         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 204                 /* Check to see if iocb matches the nport we are looking
 205                    for */
 206                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 207                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 208         }
 209         spin_unlock_irq(phba->host->host_lock);
 210
 211         while (!list_empty(&completions)) {
 212                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
 213                 cmd = &iocb->iocb;
 214                 list_del(&iocb->list);
 215
 216                 if (iocb->iocb_cmpl) {
 217                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 218                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 219                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 220                 } else
 221                         lpfc_sli_release_iocbq(phba, iocb);
 222         }
 223
 224         /* If we are delaying issuing an ELS command, cancel it */
 225         if (ndlp->nlp_flag & NLP_DELAY_TMO)
 226                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
 227         return 0;
 228 }
 229
 230 static int
 231 lpfc_rcv_plogi(struct lpfc_hba * phba,
 232                       struct lpfc_nodelist * ndlp,
 233                       struct lpfc_iocbq *cmdiocb)
 234 {
 235         struct lpfc_dmabuf *pcmd;
 236         uint32_t *lp;
 237         IOCB_t *icmd;
 238         struct serv_parm *sp;
 239         LPFC_MBOXQ_t *mbox;
 240         struct ls_rjt stat;
 241         int rc;
 242
 243         memset(&stat, 0, sizeof (struct ls_rjt));
 244         if (phba->hba_state <= LPFC_FLOGI) {
 245                 /* Before responding to PLOGI, check for pt2pt mode.
 246                  * If we are pt2pt, with an outstanding FLOGI, abort
 247                  * the FLOGI and resend it first.
 248                  */
 249                 if (phba->fc_flag & FC_PT2PT) {
 250                         lpfc_els_abort_flogi(phba);
 251                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 252                                 /* If the other side is supposed to initiate
 253                                  * the PLOGI anyway, just ACC it now and
 254                                  * move on with discovery.
 255                                  */
 256                                 phba->fc_edtov = FF_DEF_EDTOV;
 257                                 phba->fc_ratov = FF_DEF_RATOV;
 258                                 /* Start discovery - this should just do
 259                                    CLEAR_LA */
 260                                 lpfc_disc_start(phba);
 261                         } else {
 262                                 lpfc_initial_flogi(phba);
 263                         }
 264                 } else {
 265                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 266                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 267                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 268                                             ndlp);
 269                         return 0;
 270                 }
 271         }
 272         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 273         lp = (uint32_t *) pcmd->virt;
 274         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 275         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 276                 /* Reject this request because invalid parameters */
 277                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 278                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 279                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 280                 return 0;
 281         }
 282         icmd = &cmdiocb->iocb;
 283
 284         /* PLOGI chkparm OK */
 285         lpfc_printf_log(phba,
 286                         KERN_INFO,
 287                         LOG_ELS,
 288                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 289                         phba->brd_no,
 290                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 291                         ndlp->nlp_rpi);
 292
 293         if ((phba->cfg_fcp_class == 2) &&
 294             (sp->cls2.classValid)) {
 295                 ndlp->nlp_fcp_info |= CLASS2;
 296         } else {
 297                 ndlp->nlp_fcp_info |= CLASS3;
 298         }
 299         ndlp->nlp_class_sup = 0;
 300         if (sp->cls1.classValid)
 301                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 302         if (sp->cls2.classValid)
 303                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 304         if (sp->cls3.classValid)
 305                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 306         if (sp->cls4.classValid)
 307                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 308         ndlp->nlp_maxframe =
 309                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 310
 311         /* no need to reg_login if we are already in one of these states */
 312         switch (ndlp->nlp_state) {
 313         case  NLP_STE_NPR_NODE:
 314                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 315                         break;
 316         case  NLP_STE_REG_LOGIN_ISSUE:
 317         case  NLP_STE_PRLI_ISSUE:
 318         case  NLP_STE_UNMAPPED_NODE:
 319         case  NLP_STE_MAPPED_NODE:
 320                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 321                 return 1;
 322         }
 323
 324         if ((phba->fc_flag & FC_PT2PT)
 325             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 326                 /* rcv'ed PLOGI decides what our NPortId will be */
 327                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 328                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 329                 if (mbox == NULL)
 330                         goto out;
 331                 lpfc_config_link(phba, mbox);
 332                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 333                 rc = lpfc_sli_issue_mbox
 334                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 335                 if (rc == MBX_NOT_FINISHED) {
 336                         mempool_free( mbox, phba->mbox_mem_pool);
 337                         goto out;
 338                 }
 339
 340                 lpfc_can_disctmo(phba);
 341         }
 342         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 343         if (mbox == NULL)
 344                 goto out;
 345
 346         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 347                            (uint8_t *) sp, mbox, 0)) {
 348                 mempool_free( mbox, phba->mbox_mem_pool);
 349                 goto out;
 350         }
 351
 352         /* ACC PLOGI rsp command needs to execute first,
 353          * queue this mbox command to be processed later.
 354          */
 355         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 356         mbox->context2  = ndlp;
 357         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 358
 359         /*
 360          * If there is an outstanding PLOGI issued, abort it before
 361          * sending ACC rsp for received PLOGI. If pending plogi
 362          * is not canceled here, the plogi will be rejected by
 363          * remote port and will be retried. On a configuration with
 364          * single discovery thread, this will cause a huge delay in
 365          * discovery. Also this will cause multiple state machines
 366          * running in parallel for this node.
 367          */
 368         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 369                 /* software abort outstanding PLOGI */
 370                 lpfc_els_abort(phba, ndlp);
 371         }
 372
 373         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 374         return 1;
 375
 376 out:
 377         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 378         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 379         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 380         return 0;
 381 }
 382
 383 static int
 384 lpfc_rcv_padisc(struct lpfc_hba * phba,
 385                 struct lpfc_nodelist * ndlp,
 386                 struct lpfc_iocbq *cmdiocb)
 387 {
 388         struct lpfc_dmabuf *pcmd;
 389         struct serv_parm *sp;
 390         struct lpfc_name *pnn, *ppn;
 391         struct ls_rjt stat;
 392         ADISC *ap;
 393         IOCB_t *icmd;
 394         uint32_t *lp;
 395         uint32_t cmd;
 396
 397         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 398         lp = (uint32_t *) pcmd->virt;
 399
 400         cmd = *lp++;
 401         if (cmd == ELS_CMD_ADISC) {
 402                 ap = (ADISC *) lp;
 403                 pnn = (struct lpfc_name *) & ap->nodeName;
 404                 ppn = (struct lpfc_name *) & ap->portName;
 405         } else {
 406                 sp = (struct serv_parm *) lp;
 407                 pnn = (struct lpfc_name *) & sp->nodeName;
 408                 ppn = (struct lpfc_name *) & sp->portName;
 409         }
 410
 411         icmd = &cmdiocb->iocb;
 412         if ((icmd->ulpStatus == 0) &&
 413             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 414                 if (cmd == ELS_CMD_ADISC) {
 415                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 416                 } else {
 417                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 418                                 NULL, 0);
 419                 }
 420                 return 1;
 421         }
 422         /* Reject this request because invalid parameters */
 423         stat.un.b.lsRjtRsvd0 = 0;
 424         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 425         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 426         stat.un.b.vendorUnique = 0;
 427         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 428
 429         /* 1 sec timeout */
 430         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 431
 432         spin_lock_irq(phba->host->host_lock);
 433         ndlp->nlp_flag |= NLP_DELAY_TMO;
 434         spin_unlock_irq(phba->host->host_lock);
 435         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 436         ndlp->nlp_prev_state = ndlp->nlp_state;
 437         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 438         return 0;
 439 }
 440
 441 static int
 442 lpfc_rcv_logo(struct lpfc_hba * phba,
 443                       struct lpfc_nodelist * ndlp,
 444                       struct lpfc_iocbq *cmdiocb,
 445                       uint32_t els_cmd)
 446 {
 447         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 448         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 449          * PLOGIs during LOGO storms from a device.
 450          */
 451         ndlp->nlp_flag |= NLP_LOGO_ACC;
 452         if (els_cmd == ELS_CMD_PRLO)
 453                 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
 454         else
 455                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 456
 457         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 458                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 459                 /* Only try to re-login if this is NOT a Fabric Node */
 460                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 461                 spin_lock_irq(phba->host->host_lock);
 462                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 463                 spin_unlock_irq(phba->host->host_lock);
 464
 465                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 466                 ndlp->nlp_prev_state = ndlp->nlp_state;
 467                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 468         } else {
 469                 ndlp->nlp_prev_state = ndlp->nlp_state;
 470                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
 471         }
 472
 473         spin_lock_irq(phba->host->host_lock);
 474         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 475         spin_unlock_irq(phba->host->host_lock);
 476         /* The driver has to wait until the ACC completes before it continues
 477          * processing the LOGO.  The action will resume in
 478          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 479          * unreg_login, the driver waits so the ACC does not get aborted.
 480          */
 481         return 0;
 482 }
 483
 484 static void
 485 lpfc_rcv_prli(struct lpfc_hba * phba,
 486                       struct lpfc_nodelist * ndlp,
 487                       struct lpfc_iocbq *cmdiocb)
 488 {
 489         struct lpfc_dmabuf *pcmd;
 490         uint32_t *lp;
 491         PRLI *npr;
 492         struct fc_rport *rport = ndlp->rport;
 493         u32 roles;
 494
 495         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 496         lp = (uint32_t *) pcmd->virt;
 497         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 498
 499         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 500         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 501         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 502             (npr->prliType == PRLI_FCP_TYPE)) {
 503                 if (npr->initiatorFunc)
 504                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 505                 if (npr->targetFunc)
 506                         ndlp->nlp_type |= NLP_FCP_TARGET;
 507                 if (npr->Retry)
 508                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 509         }
 510         if (rport) {
 511                 /* We need to update the rport role values */
 512                 roles = FC_RPORT_ROLE_UNKNOWN;
 513                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 514                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 515                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 516                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 517                 fc_remote_port_rolechg(rport, roles);
 518         }
 519 }
 520
 521 static uint32_t
 522 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 523                       struct lpfc_nodelist * ndlp)
 524 {
 525         /* Check config parameter use-adisc or FCP-2 */
 526         if ((phba->cfg_use_adisc == 0) &&
 527                 !(phba->fc_flag & FC_RSCN_MODE)) {
 528                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 529                         return 0;
 530         }
 531         spin_lock_irq(phba->host->host_lock);
 532         ndlp->nlp_flag |= NLP_NPR_ADISC;
 533         spin_unlock_irq(phba->host->host_lock);
 534         return 1;
 535 }
 536
 537 static uint32_t
 538 lpfc_disc_illegal(struct lpfc_hba * phba,
 539                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 540 {
 541         lpfc_printf_log(phba,
 542                         KERN_ERR,
 543                         LOG_DISCOVERY,
 544                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 545                         "state x%x Data: x%x x%x\n",
 546                         phba->brd_no,
 547                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 548                         ndlp->nlp_flag);
 549         return ndlp->nlp_state;
 550 }
 551
 552 /* Start of Discovery State Machine routines */
 553
 554 static uint32_t
 555 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 556                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 557 {
 558         struct lpfc_iocbq *cmdiocb;
 559
 560         cmdiocb = (struct lpfc_iocbq *) arg;
 561
 562         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 563                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 564                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
 565                 return ndlp->nlp_state;
 566         }
 567         lpfc_drop_node(phba, ndlp);
 568         return NLP_STE_FREED_NODE;
 569 }
 570
 571 static uint32_t
 572 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 573                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 574 {
 575         lpfc_issue_els_logo(phba, ndlp, 0);
 576         lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
 577         return ndlp->nlp_state;
 578 }
 579
 580 static uint32_t
 581 lpfc_rcv_logo_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         spin_lock_irq(phba->host->host_lock);
 589         ndlp->nlp_flag |= NLP_LOGO_ACC;
 590         spin_unlock_irq(phba->host->host_lock);
 591         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 592         lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
 593
 594         return ndlp->nlp_state;
 595 }
 596
 597 static uint32_t
 598 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 599                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 600 {
 601         lpfc_drop_node(phba, ndlp);
 602         return NLP_STE_FREED_NODE;
 603 }
 604
 605 static uint32_t
 606 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 607                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 608 {
 609         lpfc_drop_node(phba, ndlp);
 610         return NLP_STE_FREED_NODE;
 611 }
 612
 613 static uint32_t
 614 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 615                            void *arg, uint32_t evt)
 616 {
 617         struct lpfc_iocbq *cmdiocb = arg;
 618         struct lpfc_dmabuf *pcmd;
 619         struct serv_parm *sp;
 620         uint32_t *lp;
 621         struct ls_rjt stat;
 622         int port_cmp;
 623
 624         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 625         lp = (uint32_t *) pcmd->virt;
 626         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 627
 628         memset(&stat, 0, sizeof (struct ls_rjt));
 629
 630         /* For a PLOGI, we only accept if our portname is less
 631          * than the remote portname.
 632          */
 633         phba->fc_stat.elsLogiCol++;
 634         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 635                           sizeof (struct lpfc_name));
 636
 637         if (port_cmp >= 0) {
 638                 /* Reject this request because the remote node will accept
 639                    ours */
 640                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 641                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 642                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 643         } else {
 644                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 645         } /* if our portname was less */
 646
 647         return ndlp->nlp_state;
 648 }
 649
 650 static uint32_t
 651 lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
 652                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 653 {
 654         struct lpfc_iocbq     *cmdiocb;
 655
 656         cmdiocb = (struct lpfc_iocbq *) arg;
 657
 658         /* software abort outstanding PLOGI */
 659         lpfc_els_abort(phba, ndlp);
 660
 661         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
 662         return ndlp->nlp_state;
 663 }
 664
 665 static uint32_t
 666 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 667                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 668 {
 669         struct lpfc_iocbq     *cmdiocb;
 670
 671         cmdiocb = (struct lpfc_iocbq *) arg;
 672
 673         /* software abort outstanding PLOGI */
 674         lpfc_els_abort(phba, ndlp);
 675
 676         if (evt == NLP_EVT_RCV_LOGO) {
 677                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 678         } else {
 679                 lpfc_issue_els_logo(phba, ndlp, 0);
 680         }
 681
 682         /* Put ndlp in npr list set plogi timer for 1 sec */
 683         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 684         spin_lock_irq(phba->host->host_lock);
 685         ndlp->nlp_flag |= NLP_DELAY_TMO;
 686         spin_unlock_irq(phba->host->host_lock);
 687         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 688         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 689         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 690
 691         return ndlp->nlp_state;
 692 }
 693
 694 static uint32_t
 695 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 696                             struct lpfc_nodelist * ndlp, void *arg,
 697                             uint32_t evt)
 698 {
 699         struct lpfc_iocbq *cmdiocb, *rspiocb;
 700         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 701         uint32_t *lp;
 702         IOCB_t *irsp;
 703         struct serv_parm *sp;
 704         LPFC_MBOXQ_t *mbox;
 705
 706         cmdiocb = (struct lpfc_iocbq *) arg;
 707         rspiocb = cmdiocb->context_un.rsp_iocb;
 708
 709         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 710                 /* Recovery from PLOGI collision logic */
 711                 return ndlp->nlp_state;
 712         }
 713
 714         irsp = &rspiocb->iocb;
 715
 716         if (irsp->ulpStatus)
 717                 goto out;
 718
 719         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 720
 721         prsp = list_get_first(&pcmd->list,
 722                               struct lpfc_dmabuf,
 723                               list);
 724         lp = (uint32_t *) prsp->virt;
 725
 726         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 727         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 728                 goto out;
 729
 730         /* PLOGI chkparm OK */
 731         lpfc_printf_log(phba,
 732                         KERN_INFO,
 733                         LOG_ELS,
 734                         "%d:0121 PLOGI chkparm OK "
 735                         "Data: x%x x%x x%x x%x\n",
 736                         phba->brd_no,
 737                         ndlp->nlp_DID, ndlp->nlp_state,
 738                         ndlp->nlp_flag, ndlp->nlp_rpi);
 739
 740         if ((phba->cfg_fcp_class == 2) &&
 741             (sp->cls2.classValid)) {
 742                 ndlp->nlp_fcp_info |= CLASS2;
 743         } else {
 744                 ndlp->nlp_fcp_info |= CLASS3;
 745         }
 746         ndlp->nlp_class_sup = 0;
 747         if (sp->cls1.classValid)
 748                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 749         if (sp->cls2.classValid)
 750                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 751         if (sp->cls3.classValid)
 752                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 753         if (sp->cls4.classValid)
 754                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 755         ndlp->nlp_maxframe =
 756                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 757                 sp->cmn.bbRcvSizeLsb;
 758
 759         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 760                                    GFP_KERNEL)))
 761                 goto out;
 762
 763         lpfc_unreg_rpi(phba, ndlp);
 764         if (lpfc_reg_login(phba, irsp->un.elsreq64.remoteID, (uint8_t *) sp,
 765                            mbox, 0) == 0) {
 766                 switch (ndlp->nlp_DID) {
 767                 case NameServer_DID:
 768                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 769                         break;
 770                 case FDMI_DID:
 771                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 772                         break;
 773                 default:
 774                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 775                 }
 776                 mbox->context2 = ndlp;
 777                 if (lpfc_sli_issue_mbox(phba, mbox,
 778                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 779                     != MBX_NOT_FINISHED) {
 780                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 781                         return ndlp->nlp_state;
 782                 }
 783                 mp = (struct lpfc_dmabuf *)mbox->context1;
 784                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 785                 kfree(mp);
 786                 mempool_free(mbox, phba->mbox_mem_pool);
 787         } else {
 788                 mempool_free(mbox, phba->mbox_mem_pool);
 789         }
 790
 791
 792  out:
 793         /* Free this node since the driver cannot login or has the wrong
 794            sparm */
 795         lpfc_drop_node(phba, ndlp);
 796         return NLP_STE_FREED_NODE;
 797 }
 798
 799 static uint32_t
 800 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 801                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 802 {
 803         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 804                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 805                 return ndlp->nlp_state;
 806         }
 807         else {
 808                 /* software abort outstanding PLOGI */
 809                 lpfc_els_abort(phba, ndlp);
 810
 811                 lpfc_drop_node(phba, ndlp);
 812                 return NLP_STE_FREED_NODE;
 813         }
 814 }
 815
 816 static uint32_t
 817 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 818                             struct lpfc_nodelist * ndlp, void *arg,
 819                             uint32_t evt)
 820 {
 821         /* software abort outstanding PLOGI */
 822         lpfc_els_abort(phba, ndlp);
 823
 824         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 825         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 826         spin_lock_irq(phba->host->host_lock);
 827         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 828         spin_unlock_irq(phba->host->host_lock);
 829
 830         return ndlp->nlp_state;
 831 }
 832
 833 static uint32_t
 834 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 835                             struct lpfc_nodelist * ndlp, void *arg,
 836                             uint32_t evt)
 837 {
 838         struct lpfc_iocbq *cmdiocb;
 839
 840         /* software abort outstanding ADISC */
 841         lpfc_els_abort(phba, ndlp);
 842
 843         cmdiocb = (struct lpfc_iocbq *) arg;
 844
 845         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 846                 return ndlp->nlp_state;
 847         }
 848         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 849         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
 850         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
 851
 852         return ndlp->nlp_state;
 853 }
 854
 855 static uint32_t
 856 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 857                             struct lpfc_nodelist * ndlp, void *arg,
 858                             uint32_t evt)
 859 {
 860         struct lpfc_iocbq *cmdiocb;
 861
 862         cmdiocb = (struct lpfc_iocbq *) arg;
 863
 864         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 865         return ndlp->nlp_state;
 866 }
 867
 868 static uint32_t
 869 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 870                             struct lpfc_nodelist * ndlp, void *arg,
 871                             uint32_t evt)
 872 {
 873         struct lpfc_iocbq *cmdiocb;
 874
 875         cmdiocb = (struct lpfc_iocbq *) arg;
 876
 877         /* software abort outstanding ADISC */
 878         lpfc_els_abort(phba, ndlp);
 879
 880         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
 881         return ndlp->nlp_state;
 882 }
 883
 884 static uint32_t
 885 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 886                             struct lpfc_nodelist * ndlp, void *arg,
 887                             uint32_t evt)
 888 {
 889         struct lpfc_iocbq *cmdiocb;
 890
 891         cmdiocb = (struct lpfc_iocbq *) arg;
 892
 893         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 894         return ndlp->nlp_state;
 895 }
 896
 897 static uint32_t
 898 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 899                             struct lpfc_nodelist * ndlp, void *arg,
 900                             uint32_t evt)
 901 {
 902         struct lpfc_iocbq *cmdiocb;
 903
 904         cmdiocb = (struct lpfc_iocbq *) arg;
 905
 906         /* Treat like rcv logo */
 907         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
 908         return ndlp->nlp_state;
 909 }
 910
 911 static uint32_t
 912 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 913                             struct lpfc_nodelist * ndlp, void *arg,
 914                             uint32_t evt)
 915 {
 916         struct lpfc_iocbq *cmdiocb, *rspiocb;
 917         IOCB_t *irsp;
 918         ADISC *ap;
 919
 920         cmdiocb = (struct lpfc_iocbq *) arg;
 921         rspiocb = cmdiocb->context_un.rsp_iocb;
 922
 923         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 924         irsp = &rspiocb->iocb;
 925
 926         if ((irsp->ulpStatus) ||
 927                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 928                 /* 1 sec timeout */
 929                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 930                 spin_lock_irq(phba->host->host_lock);
 931                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 932                 spin_unlock_irq(phba->host->host_lock);
 933                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 934
 935                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 936                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 937
 938                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 939                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 940                 lpfc_unreg_rpi(phba, ndlp);
 941                 return ndlp->nlp_state;
 942         }
 943
 944         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 945                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 946                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_MAPPED_NODE);
 947         } else {
 948                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 949                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNMAPPED_NODE);
 950         }
 951         return ndlp->nlp_state;
 952 }
 953
 954 static uint32_t
 955 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 956                             struct lpfc_nodelist * ndlp, void *arg,
 957                             uint32_t evt)
 958 {
 959         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 960                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 961                 return ndlp->nlp_state;
 962         }
 963         else {
 964                 /* software abort outstanding ADISC */
 965                 lpfc_els_abort(phba, ndlp);
 966
 967                 lpfc_drop_node(phba, ndlp);
 968                 return NLP_STE_FREED_NODE;
 969         }
 970 }
 971
 972 static uint32_t
 973 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
 974                             struct lpfc_nodelist * ndlp, void *arg,
 975                             uint32_t evt)
 976 {
 977         /* software abort outstanding ADISC */
 978         lpfc_els_abort(phba, ndlp);
 979
 980         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 981         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
 982         spin_lock_irq(phba->host->host_lock);
 983         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 984         ndlp->nlp_flag |= NLP_NPR_ADISC;
 985         spin_unlock_irq(phba->host->host_lock);
 986
 987         return ndlp->nlp_state;
 988 }
 989
 990 static uint32_t
 991 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
 992                               struct lpfc_nodelist * ndlp, void *arg,
 993                               uint32_t evt)
 994 {
 995         struct lpfc_iocbq *cmdiocb;
 996
 997         cmdiocb = (struct lpfc_iocbq *) arg;
 998
 999         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1000         return ndlp->nlp_state;
1001 }
1002
1003 static uint32_t
1004 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1005                              struct lpfc_nodelist * ndlp, void *arg,
1006                              uint32_t evt)
1007 {
1008         struct lpfc_iocbq *cmdiocb;
1009
1010         cmdiocb = (struct lpfc_iocbq *) arg;
1011
1012         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1013         return ndlp->nlp_state;
1014 }
1015
1016 static uint32_t
1017 lpfc_rcv_logo_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_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1026         return ndlp->nlp_state;
1027 }
1028
1029 static uint32_t
1030 lpfc_rcv_padisc_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_rcv_padisc(phba, ndlp, cmdiocb);
1039         return ndlp->nlp_state;
1040 }
1041
1042 static uint32_t
1043 lpfc_rcv_prlo_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         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1051         return ndlp->nlp_state;
1052 }
1053
1054 static uint32_t
1055 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1056                                   struct lpfc_nodelist * ndlp,
1057                                   void *arg, uint32_t evt)
1058 {
1059         LPFC_MBOXQ_t *pmb;
1060         MAILBOX_t *mb;
1061         uint32_t did;
1062
1063         pmb = (LPFC_MBOXQ_t *) arg;
1064         mb = &pmb->mb;
1065         did = mb->un.varWords[1];
1066         if (mb->mbxStatus) {
1067                 /* RegLogin failed */
1068                 lpfc_printf_log(phba,
1069                                 KERN_ERR,
1070                                 LOG_DISCOVERY,
1071                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1072                                 phba->brd_no,
1073                                 did, mb->mbxStatus, phba->hba_state);
1074
1075                 /*
1076                  * If RegLogin failed due to lack of HBA resources do not
1077                  * retry discovery.
1078                  */
1079                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1080                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1081                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
1082                         return ndlp->nlp_state;
1083                 }
1084
1085                 /* Put ndlp in npr list set plogi timer for 1 sec */
1086                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1087                 spin_lock_irq(phba->host->host_lock);
1088                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1089                 spin_unlock_irq(phba->host->host_lock);
1090                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1091
1092                 lpfc_issue_els_logo(phba, ndlp, 0);
1093                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1094                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1095                 return ndlp->nlp_state;
1096         }
1097
1098         ndlp->nlp_rpi = mb->un.varWords[0];
1099
1100         /* Only if we are not a fabric nport do we issue PRLI */
1101         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1102                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1103                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_PRLI_ISSUE);
1104                 lpfc_issue_els_prli(phba, ndlp, 0);
1105         } else {
1106                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1107                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNMAPPED_NODE);
1108         }
1109         return ndlp->nlp_state;
1110 }
1111
1112 static uint32_t
1113 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1114                               struct lpfc_nodelist * ndlp, void *arg,
1115                               uint32_t evt)
1116 {
1117         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1118                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1119                 return ndlp->nlp_state;
1120         }
1121         else {
1122                 lpfc_drop_node(phba, ndlp);
1123                 return NLP_STE_FREED_NODE;
1124         }
1125 }
1126
1127 static uint32_t
1128 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1129                                struct lpfc_nodelist * ndlp, void *arg,
1130                                uint32_t evt)
1131 {
1132         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1133         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1134         spin_lock_irq(phba->host->host_lock);
1135         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1136         spin_unlock_irq(phba->host->host_lock);
1137         return ndlp->nlp_state;
1138 }
1139
1140 static uint32_t
1141 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1142                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1143 {
1144         struct lpfc_iocbq *cmdiocb;
1145
1146         cmdiocb = (struct lpfc_iocbq *) arg;
1147
1148         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1149         return ndlp->nlp_state;
1150 }
1151
1152 static uint32_t
1153 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1154                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1155 {
1156         struct lpfc_iocbq *cmdiocb;
1157
1158         cmdiocb = (struct lpfc_iocbq *) arg;
1159
1160         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1161         return ndlp->nlp_state;
1162 }
1163
1164 static uint32_t
1165 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1166                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1167 {
1168         struct lpfc_iocbq *cmdiocb;
1169
1170         cmdiocb = (struct lpfc_iocbq *) arg;
1171
1172         /* Software abort outstanding PRLI before sending acc */
1173         lpfc_els_abort(phba, ndlp);
1174
1175         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1176         return ndlp->nlp_state;
1177 }
1178
1179 static uint32_t
1180 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1181                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1182 {
1183         struct lpfc_iocbq *cmdiocb;
1184
1185         cmdiocb = (struct lpfc_iocbq *) arg;
1186
1187         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1188         return ndlp->nlp_state;
1189 }
1190
1191 /* This routine is envoked when we rcv a PRLO request from a nport
1192  * we are logged into.  We should send back a PRLO rsp setting the
1193  * appropriate bits.
1194  * NEXT STATE = PRLI_ISSUE
1195  */
1196 static uint32_t
1197 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1198                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1199 {
1200         struct lpfc_iocbq *cmdiocb;
1201
1202         cmdiocb = (struct lpfc_iocbq *) arg;
1203         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1204         return ndlp->nlp_state;
1205 }
1206
1207 static uint32_t
1208 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1209                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1210 {
1211         struct lpfc_iocbq *cmdiocb, *rspiocb;
1212         IOCB_t *irsp;
1213         PRLI *npr;
1214
1215         cmdiocb = (struct lpfc_iocbq *) arg;
1216         rspiocb = cmdiocb->context_un.rsp_iocb;
1217         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1218
1219         irsp = &rspiocb->iocb;
1220         if (irsp->ulpStatus) {
1221                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1222                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNMAPPED_NODE);
1223                 return ndlp->nlp_state;
1224         }
1225
1226         /* Check out PRLI rsp */
1227         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1228         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1229         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1230             (npr->prliType == PRLI_FCP_TYPE)) {
1231                 if (npr->initiatorFunc)
1232                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1233                 if (npr->targetFunc)
1234                         ndlp->nlp_type |= NLP_FCP_TARGET;
1235                 if (npr->Retry)
1236                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1237         }
1238
1239         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1240         lpfc_nlp_set_state(phba, ndlp, NLP_STE_MAPPED_NODE);
1241         return ndlp->nlp_state;
1242 }
1243
1244 /*! lpfc_device_rm_prli_issue
1245   *
1246   * \pre
1247   * \post
1248   * \param   phba
1249   * \param   ndlp
1250   * \param   arg
1251   * \param   evt
1252   * \return  uint32_t
1253   *
1254   * \b Description:
1255   *    This routine is envoked when we a request to remove a nport we are in the
1256   *    process of PRLIing. We should software abort outstanding prli, unreg
1257   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1258   *    on plogi list so it can be freed when LOGO completes.
1259   *
1260   */
1261 static uint32_t
1262 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1263                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1264 {
1265         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1266                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1267                 return ndlp->nlp_state;
1268         }
1269         else {
1270                 /* software abort outstanding PLOGI */
1271                 lpfc_els_abort(phba, ndlp);
1272
1273                 lpfc_drop_node(phba, ndlp);
1274                 return NLP_STE_FREED_NODE;
1275         }
1276 }
1277
1278
1279 /*! lpfc_device_recov_prli_issue
1280   *
1281   * \pre
1282   * \post
1283   * \param   phba
1284   * \param   ndlp
1285   * \param   arg
1286   * \param   evt
1287   * \return  uint32_t
1288   *
1289   * \b Description:
1290   *    The routine is envoked when the state of a device is unknown, like
1291   *    during a link down. We should remove the nodelist entry from the
1292   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1293   *    outstanding PRLI command, then free the node entry.
1294   */
1295 static uint32_t
1296 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1297                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1298 {
1299         /* software abort outstanding PRLI */
1300         lpfc_els_abort(phba, ndlp);
1301
1302         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1303         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1304         spin_lock_irq(phba->host->host_lock);
1305         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1306         spin_unlock_irq(phba->host->host_lock);
1307         return ndlp->nlp_state;
1308 }
1309
1310 static uint32_t
1311 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1312                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1313 {
1314         struct lpfc_iocbq *cmdiocb;
1315
1316         cmdiocb = (struct lpfc_iocbq *) arg;
1317
1318         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1319         return ndlp->nlp_state;
1320 }
1321
1322 static uint32_t
1323 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1324                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1325 {
1326         struct lpfc_iocbq *cmdiocb;
1327
1328         cmdiocb = (struct lpfc_iocbq *) arg;
1329
1330         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1331         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1332         return ndlp->nlp_state;
1333 }
1334
1335 static uint32_t
1336 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1337                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1338 {
1339         struct lpfc_iocbq *cmdiocb;
1340
1341         cmdiocb = (struct lpfc_iocbq *) arg;
1342
1343         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1344         return ndlp->nlp_state;
1345 }
1346
1347 static uint32_t
1348 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1349                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1350 {
1351         struct lpfc_iocbq *cmdiocb;
1352
1353         cmdiocb = (struct lpfc_iocbq *) arg;
1354
1355         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1356         return ndlp->nlp_state;
1357 }
1358
1359 static uint32_t
1360 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1361                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1362 {
1363         struct lpfc_iocbq *cmdiocb;
1364
1365         cmdiocb = (struct lpfc_iocbq *) arg;
1366
1367         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1368         return ndlp->nlp_state;
1369 }
1370
1371 static uint32_t
1372 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1373                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1374 {
1375         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1376         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1377         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1378         lpfc_disc_set_adisc(phba, ndlp);
1379
1380         return ndlp->nlp_state;
1381 }
1382
1383 static uint32_t
1384 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1385                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1386 {
1387         struct lpfc_iocbq *cmdiocb;
1388
1389         cmdiocb = (struct lpfc_iocbq *) arg;
1390
1391         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1392         return ndlp->nlp_state;
1393 }
1394
1395 static uint32_t
1396 lpfc_rcv_prli_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_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1404         return ndlp->nlp_state;
1405 }
1406
1407 static uint32_t
1408 lpfc_rcv_logo_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_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1416         return ndlp->nlp_state;
1417 }
1418
1419 static uint32_t
1420 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1421                             struct lpfc_nodelist * ndlp, void *arg,
1422                             uint32_t evt)
1423 {
1424         struct lpfc_iocbq *cmdiocb;
1425
1426         cmdiocb = (struct lpfc_iocbq *) arg;
1427
1428         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1429         return ndlp->nlp_state;
1430 }
1431
1432 static uint32_t
1433 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1434                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1435 {
1436         struct lpfc_iocbq *cmdiocb;
1437
1438         cmdiocb = (struct lpfc_iocbq *) arg;
1439
1440         /* flush the target */
1441         spin_lock_irq(phba->host->host_lock);
1442         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1443                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1444         spin_unlock_irq(phba->host->host_lock);
1445
1446         /* Treat like rcv logo */
1447         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
1448         return ndlp->nlp_state;
1449 }
1450
1451 static uint32_t
1452 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1453                             struct lpfc_nodelist * ndlp, void *arg,
1454                             uint32_t evt)
1455 {
1456         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1457         lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1458         spin_lock_irq(phba->host->host_lock);
1459         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1460         spin_unlock_irq(phba->host->host_lock);
1461         lpfc_disc_set_adisc(phba, ndlp);
1462         return ndlp->nlp_state;
1463 }
1464
1465 static uint32_t
1466 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1467                             struct lpfc_nodelist * ndlp, void *arg,
1468                             uint32_t evt)
1469 {
1470         struct lpfc_iocbq *cmdiocb;
1471
1472         cmdiocb = (struct lpfc_iocbq *) arg;
1473
1474         /* Ignore PLOGI if we have an outstanding LOGO */
1475         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1476                 return ndlp->nlp_state;
1477         }
1478
1479         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1480                 spin_lock_irq(phba->host->host_lock);
1481                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1482                 spin_unlock_irq(phba->host->host_lock);
1483                 return ndlp->nlp_state;
1484         }
1485
1486         /* send PLOGI immediately, move to PLOGI issue state */
1487         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1488                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1489                 lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
1490                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1491         }
1492
1493         return ndlp->nlp_state;
1494 }
1495
1496 static uint32_t
1497 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1498                             struct lpfc_nodelist * ndlp, void *arg,
1499                             uint32_t evt)
1500 {
1501         struct lpfc_iocbq     *cmdiocb;
1502         struct ls_rjt          stat;
1503
1504         cmdiocb = (struct lpfc_iocbq *) arg;
1505
1506         memset(&stat, 0, sizeof (struct ls_rjt));
1507         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1508         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1509         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1510
1511         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1512                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1513                         spin_lock_irq(phba->host->host_lock);
1514                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1515                         spin_unlock_irq(phba->host->host_lock);
1516                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1517                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
1518                         lpfc_issue_els_adisc(phba, ndlp, 0);
1519                 } else {
1520                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1521                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
1522                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1523                 }
1524         }
1525         return ndlp->nlp_state;
1526 }
1527
1528 static uint32_t
1529 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1530                             struct lpfc_nodelist * ndlp, void *arg,
1531                             uint32_t evt)
1532 {
1533         struct lpfc_iocbq     *cmdiocb;
1534
1535         cmdiocb = (struct lpfc_iocbq *) arg;
1536
1537         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1538         return ndlp->nlp_state;
1539 }
1540
1541 static uint32_t
1542 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1543                             struct lpfc_nodelist * ndlp, void *arg,
1544                             uint32_t evt)
1545 {
1546         struct lpfc_iocbq     *cmdiocb;
1547
1548         cmdiocb = (struct lpfc_iocbq *) arg;
1549
1550         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1551
1552         /*
1553          * Do not start discovery if discovery is about to start
1554          * or discovery in progress for this node. Starting discovery
1555          * here will affect the counting of discovery threads.
1556          */
1557         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1558                 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)){
1559                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1560                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1561                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
1562                         lpfc_issue_els_adisc(phba, ndlp, 0);
1563                 } else {
1564                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1565                         lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
1566                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1567                 }
1568         }
1569         return ndlp->nlp_state;
1570 }
1571
1572 static uint32_t
1573 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1574                             struct lpfc_nodelist * ndlp, void *arg,
1575                             uint32_t evt)
1576 {
1577         struct lpfc_iocbq     *cmdiocb;
1578
1579         cmdiocb = (struct lpfc_iocbq *) arg;
1580
1581         spin_lock_irq(phba->host->host_lock);
1582         ndlp->nlp_flag |= NLP_LOGO_ACC;
1583         spin_unlock_irq(phba->host->host_lock);
1584
1585         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1586
1587         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1588                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1589                 spin_lock_irq(phba->host->host_lock);
1590                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1591                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1592                 spin_unlock_irq(phba->host->host_lock);
1593                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1594         } else {
1595                 spin_lock_irq(phba->host->host_lock);
1596                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1597                 spin_unlock_irq(phba->host->host_lock);
1598         }
1599         return ndlp->nlp_state;
1600 }
1601
1602 static uint32_t
1603 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1604                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1605 {
1606         struct lpfc_iocbq *cmdiocb, *rspiocb;
1607         IOCB_t *irsp;
1608
1609         cmdiocb = (struct lpfc_iocbq *) arg;
1610         rspiocb = cmdiocb->context_un.rsp_iocb;
1611
1612         irsp = &rspiocb->iocb;
1613         if (irsp->ulpStatus) {
1614                 lpfc_drop_node(phba, ndlp);
1615                 return NLP_STE_FREED_NODE;
1616         }
1617         return ndlp->nlp_state;
1618 }
1619
1620 static uint32_t
1621 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1622                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1623 {
1624         struct lpfc_iocbq *cmdiocb, *rspiocb;
1625         IOCB_t *irsp;
1626
1627         cmdiocb = (struct lpfc_iocbq *) arg;
1628         rspiocb = cmdiocb->context_un.rsp_iocb;
1629
1630         irsp = &rspiocb->iocb;
1631         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1632                 lpfc_drop_node(phba, ndlp);
1633                 return NLP_STE_FREED_NODE;
1634         }
1635         return ndlp->nlp_state;
1636 }
1637
1638 static uint32_t
1639 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1640                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1641 {
1642         lpfc_unreg_rpi(phba, ndlp);
1643         /* This routine does nothing, just return the current state */
1644         return ndlp->nlp_state;
1645 }
1646
1647 static uint32_t
1648 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1649                             struct lpfc_nodelist * ndlp, void *arg,
1650                             uint32_t evt)
1651 {
1652         struct lpfc_iocbq *cmdiocb, *rspiocb;
1653         IOCB_t *irsp;
1654
1655         cmdiocb = (struct lpfc_iocbq *) arg;
1656         rspiocb = cmdiocb->context_un.rsp_iocb;
1657
1658         irsp = &rspiocb->iocb;
1659         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1660                 lpfc_drop_node(phba, ndlp);
1661                 return NLP_STE_FREED_NODE;
1662         }
1663         return ndlp->nlp_state;
1664 }
1665
1666 static uint32_t
1667 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1668                             struct lpfc_nodelist * ndlp, void *arg,
1669                             uint32_t evt)
1670 {
1671         LPFC_MBOXQ_t *pmb;
1672         MAILBOX_t *mb;
1673
1674         pmb = (LPFC_MBOXQ_t *) arg;
1675         mb = &pmb->mb;
1676
1677         if (!mb->mbxStatus)
1678                 ndlp->nlp_rpi = mb->un.varWords[0];
1679         else {
1680                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1681                         lpfc_drop_node(phba, ndlp);
1682                         return NLP_STE_FREED_NODE;
1683                 }
1684         }
1685         return ndlp->nlp_state;
1686 }
1687
1688 static uint32_t
1689 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1690                             struct lpfc_nodelist * ndlp, void *arg,
1691                             uint32_t evt)
1692 {
1693         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1694                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1695                 return ndlp->nlp_state;
1696         }
1697         lpfc_drop_node(phba, ndlp);
1698         return NLP_STE_FREED_NODE;
1699 }
1700
1701 static uint32_t
1702 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1703                             struct lpfc_nodelist * ndlp, void *arg,
1704                             uint32_t evt)
1705 {
1706         spin_lock_irq(phba->host->host_lock);
1707         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1708         spin_unlock_irq(phba->host->host_lock);
1709         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1710                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1711         }
1712         return ndlp->nlp_state;
1713 }
1714
1715
1716 /* This next section defines the NPort Discovery State Machine */
1717
1718 /* There are 4 different double linked lists nodelist entries can reside on.
1719  * The plogi list and adisc list are used when Link Up discovery or RSCN
1720  * processing is needed. Each list holds the nodes that we will send PLOGI
1721  * or ADISC on. These lists will keep track of what nodes will be effected
1722  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1723  * The unmapped_list will contain all nodes that we have successfully logged
1724  * into at the Fibre Channel level. The mapped_list will contain all nodes
1725  * that are mapped FCP targets.
1726  */
1727 /*
1728  * The bind list is a list of undiscovered (potentially non-existent) nodes
1729  * that we have saved binding information on. This information is used when
1730  * nodes transition from the unmapped to the mapped list.
1731  */
1732 /* For UNUSED_NODE state, the node has just been allocated .
1733  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1734  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1735  * and put on the unmapped list. For ADISC processing, the node is taken off
1736  * the ADISC list and placed on either the mapped or unmapped list (depending
1737  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1738  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1739  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1740  * node, the node is taken off the unmapped list. The binding list is checked
1741  * for a valid binding, or a binding is automatically assigned. If binding
1742  * assignment is unsuccessful, the node is left on the unmapped list. If
1743  * binding assignment is successful, the associated binding list entry (if
1744  * any) is removed, and the node is placed on the mapped list.
1745  */
1746 /*
1747  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1748  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1749  * expire, all effected nodes will receive a DEVICE_RM event.
1750  */
1751 /*
1752  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1753  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1754  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1755  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1756  * we will first process the ADISC list.  32 entries are processed initially and
1757  * ADISC is initited for each one.  Completions / Events for each node are
1758  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1759  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1760  * waiting, and the ADISC list count is identically 0, then we are done. For
1761  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1762  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1763  * list.  32 entries are processed initially and PLOGI is initited for each one.
1764  * Completions / Events for each node are funnelled thru the state machine.  As
1765  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1766  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1767  * indentically 0, then we are done. We have now completed discovery / RSCN
1768  * handling. Upon completion, ALL nodes should be on either the mapped or
1769  * unmapped lists.
1770  */
1771
1772 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1773      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1774         /* Action routine                  Event       Current State  */
1775         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1776         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1777         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1778         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1779         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1780         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1781         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1782         lpfc_disc_illegal,              /* CMPL_PRLI       */
1783         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1784         lpfc_disc_illegal,              /* CMPL_ADISC      */
1785         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1786         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1787         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1788
1789         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1790         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1791         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1792         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1793         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1794         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1795         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1796         lpfc_disc_illegal,              /* CMPL_PRLI       */
1797         lpfc_disc_illegal,              /* CMPL_LOGO       */
1798         lpfc_disc_illegal,              /* CMPL_ADISC      */
1799         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1800         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1801         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1802
1803         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1804         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1805         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1806         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1807         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1808         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1809         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1810         lpfc_disc_illegal,              /* CMPL_PRLI       */
1811         lpfc_disc_illegal,              /* CMPL_LOGO       */
1812         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1813         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1814         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1815         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1816
1817         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1818         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1819         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1820         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1821         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1822         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1823         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1824         lpfc_disc_illegal,              /* CMPL_PRLI       */
1825         lpfc_disc_illegal,              /* CMPL_LOGO       */
1826         lpfc_disc_illegal,              /* CMPL_ADISC      */
1827         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1828         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1829         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1830
1831         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1832         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1833         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1834         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1835         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1836         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1837         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1838         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1839         lpfc_disc_illegal,              /* CMPL_LOGO       */
1840         lpfc_disc_illegal,              /* CMPL_ADISC      */
1841         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1842         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1843         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1844
1845         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1846         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1847         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1848         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1849         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1850         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1851         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1852         lpfc_disc_illegal,              /* CMPL_PRLI       */
1853         lpfc_disc_illegal,              /* CMPL_LOGO       */
1854         lpfc_disc_illegal,              /* CMPL_ADISC      */
1855         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1856         lpfc_disc_illegal,              /* DEVICE_RM       */
1857         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1858
1859         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1860         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1861         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1862         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1863         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1864         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1865         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1866         lpfc_disc_illegal,              /* CMPL_PRLI       */
1867         lpfc_disc_illegal,              /* CMPL_LOGO       */
1868         lpfc_disc_illegal,              /* CMPL_ADISC      */
1869         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1870         lpfc_disc_illegal,              /* DEVICE_RM       */
1871         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1872
1873         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1874         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1875         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1876         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1877         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1878         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1879         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
1880         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
1881         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1882         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
1883         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1884         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1885         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1886 };
1887
1888 int
1889 lpfc_disc_state_machine(struct lpfc_hba * phba,
1890                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1891 {
1892         uint32_t cur_state, rc;
1893         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1894                          uint32_t);
1895
1896         ndlp->nlp_disc_refcnt++;
1897         cur_state = ndlp->nlp_state;
1898
1899         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1900         lpfc_printf_log(phba,
1901                         KERN_INFO,
1902                         LOG_DISCOVERY,
1903                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1904                         "Data: x%x\n",
1905                         phba->brd_no,
1906                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1907
1908         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1909         rc = (func) (phba, ndlp, arg, evt);
1910
1911         /* DSM out state <rc> on NPort <nlp_DID> */
1912         lpfc_printf_log(phba,
1913                        KERN_INFO,
1914                        LOG_DISCOVERY,
1915                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1916                        phba->brd_no,
1917                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1918
1919         ndlp->nlp_disc_refcnt--;
1920
1921         /* Check to see if ndlp removal is deferred */
1922         if ((ndlp->nlp_disc_refcnt == 0)
1923             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1924                 spin_lock_irq(phba->host->host_lock);
1925                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1926                 spin_unlock_irq(phba->host->host_lock);
1927                 lpfc_nlp_remove(phba, ndlp);
1928                 return NLP_STE_FREED_NODE;
1929         }
1930         if (rc == NLP_STE_FREED_NODE)
1931                 return NLP_STE_FREED_NODE;
1932         return rc;
1933 }