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) 2004-2005 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <scsi/scsi_device.h>
  27 #include <scsi/scsi_host.h>
  28 #include <scsi/scsi_transport_fc.h>
  29
  30 #include "lpfc_hw.h"
  31 #include "lpfc_sli.h"
  32 #include "lpfc_disc.h"
  33 #include "lpfc_scsi.h"
  34 #include "lpfc.h"
  35 #include "lpfc_logmsg.h"
  36 #include "lpfc_crtn.h"
  37
  38
  39 /* Called to verify a rcv'ed ADISC was intended for us. */
  40 static int
  41 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
  42                  struct lpfc_name * nn, struct lpfc_name * pn)
  43 {
  44         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  45          * table entry for that node.
  46          */
  47         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
  48                 return (0);
  49
  50         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
  51                 return (0);
  52
  53         /* we match, return success */
  54         return (1);
  55 }
  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         /* First check for supported version */
  65
  66         /* Next check for class validity */
  67         if (sp->cls1.classValid) {
  68
  69                 if (sp->cls1.rcvDataSizeMsb > hsp->cls1.rcvDataSizeMsb)
  70                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  71                 if (sp->cls1.rcvDataSizeLsb > hsp->cls1.rcvDataSizeLsb)
  72                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  73         } else if (class == CLASS1) {
  74                 return (0);
  75         }
  76
  77         if (sp->cls2.classValid) {
  78
  79                 if (sp->cls2.rcvDataSizeMsb > hsp->cls2.rcvDataSizeMsb)
  80                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  81                 if (sp->cls2.rcvDataSizeLsb > hsp->cls2.rcvDataSizeLsb)
  82                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  83         } else if (class == CLASS2) {
  84                 return (0);
  85         }
  86
  87         if (sp->cls3.classValid) {
  88
  89                 if (sp->cls3.rcvDataSizeMsb > hsp->cls3.rcvDataSizeMsb)
  90                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
  91                 if (sp->cls3.rcvDataSizeLsb > hsp->cls3.rcvDataSizeLsb)
  92                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
  93         } else if (class == CLASS3) {
  94                 return (0);
  95         }
  96
  97         if (sp->cmn.bbRcvSizeMsb > hsp->cmn.bbRcvSizeMsb)
  98                 sp->cmn.bbRcvSizeMsb = hsp->cmn.bbRcvSizeMsb;
  99         if (sp->cmn.bbRcvSizeLsb > hsp->cmn.bbRcvSizeLsb)
 100                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 101
 102         /* If check is good, copy wwpn wwnn into ndlp */
 103         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 104         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 105         return (1);
 106 }
 107
 108 static void *
 109 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 110                       struct lpfc_iocbq *cmdiocb,
 111                       struct lpfc_iocbq *rspiocb)
 112 {
 113         struct lpfc_dmabuf *pcmd, *prsp;
 114         uint32_t *lp;
 115         void     *ptr = NULL;
 116         IOCB_t   *irsp;
 117
 118         irsp = &rspiocb->iocb;
 119         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 120
 121         /* For lpfc_els_abort, context2 could be zero'ed to delay
 122          * freeing associated memory till after ABTS completes.
 123          */
 124         if (pcmd) {
 125                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 126                                        list);
 127                 if (prsp) {
 128                         lp = (uint32_t *) prsp->virt;
 129                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 130                 }
 131         }
 132         else {
 133                 /* Force ulpStatus error since we are returning NULL ptr */
 134                 if (!(irsp->ulpStatus)) {
 135                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 136                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 137                 }
 138                 ptr = NULL;
 139         }
 140         return (ptr);
 141 }
 142
 143
 144 /*
 145  * Free resources / clean up outstanding I/Os
 146  * associated with a LPFC_NODELIST entry. This
 147  * routine effectively results in a "software abort".
 148  */
 149 int
 150 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 151         int send_abts)
 152 {
 153         struct lpfc_sli *psli;
 154         struct lpfc_sli_ring *pring;
 155         struct lpfc_iocbq *iocb, *next_iocb;
 156         IOCB_t *icmd;
 157         int    found = 0;
 158
 159         /* Abort outstanding I/O on NPort <nlp_DID> */
 160         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 161                         "%d:0201 Abort outstanding I/O on NPort x%x "
 162                         "Data: x%x x%x x%x\n",
 163                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 164                         ndlp->nlp_state, ndlp->nlp_rpi);
 165
 166         psli = &phba->sli;
 167         pring = &psli->ring[LPFC_ELS_RING];
 168
 169         /* First check the txq */
 170         do {
 171                 found = 0;
 172                 spin_lock_irq(phba->host->host_lock);
 173                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 174                         /* Check to see if iocb matches the nport we are looking
 175                            for */
 176                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 177                                 found = 1;
 178                                 /* It matches, so deque and call compl with an
 179                                    error */
 180                                 list_del(&iocb->list);
 181                                 pring->txq_cnt--;
 182                                 if (iocb->iocb_cmpl) {
 183                                         icmd = &iocb->iocb;
 184                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 185                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 186                                         spin_unlock_irq(phba->host->host_lock);
 187                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 188                                         spin_lock_irq(phba->host->host_lock);
 189                                 } else {
 190                                         list_add_tail(&iocb->list,
 191                                                         &phba->lpfc_iocb_list);
 192                                 }
 193                                 break;
 194                         }
 195                 }
 196                 spin_unlock_irq(phba->host->host_lock);
 197         } while (found);
 198
 199         /* Everything on txcmplq will be returned by firmware
 200          * with a no rpi / linkdown / abort error.  For ring 0,
 201          * ELS discovery, we want to get rid of it right here.
 202          */
 203         /* Next check the txcmplq */
 204         do {
 205                 found = 0;
 206                 spin_lock_irq(phba->host->host_lock);
 207                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 208                                          list) {
 209                         /* Check to see if iocb matches the nport we are looking
 210                            for */
 211                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 212                                 found = 1;
 213                                 /* It matches, so deque and call compl with an
 214                                    error */
 215                                 list_del(&iocb->list);
 216                                 pring->txcmplq_cnt--;
 217
 218                                 icmd = &iocb->iocb;
 219                                 /* If the driver is completing an ELS
 220                                  * command early, flush it out of the firmware.
 221                                  */
 222                                 if (send_abts &&
 223                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 224                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 225                                         lpfc_sli_issue_abort_iotag32(phba,
 226                                                              pring, iocb);
 227                                 }
 228                                 if (iocb->iocb_cmpl) {
 229                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 230                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 231                                         spin_unlock_irq(phba->host->host_lock);
 232                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 233                                         spin_lock_irq(phba->host->host_lock);
 234                                 } else {
 235                                         list_add_tail(&iocb->list,
 236                                                         &phba->lpfc_iocb_list);
 237                                 }
 238                                 break;
 239                         }
 240                 }
 241                 spin_unlock_irq(phba->host->host_lock);
 242         } while(found);
 243
 244         /* If we are delaying issuing an ELS command, cancel it */
 245         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
 246                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 247                 del_timer_sync(&ndlp->nlp_delayfunc);
 248                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 249                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 250         }
 251         return (0);
 252 }
 253
 254 static int
 255 lpfc_rcv_plogi(struct lpfc_hba * phba,
 256                       struct lpfc_nodelist * ndlp,
 257                       struct lpfc_iocbq *cmdiocb)
 258 {
 259         struct lpfc_dmabuf *pcmd;
 260         uint32_t *lp;
 261         IOCB_t *icmd;
 262         struct serv_parm *sp;
 263         LPFC_MBOXQ_t *mbox;
 264         struct ls_rjt stat;
 265         int rc;
 266
 267         memset(&stat, 0, sizeof (struct ls_rjt));
 268         if (phba->hba_state <= LPFC_FLOGI) {
 269                 /* Before responding to PLOGI, check for pt2pt mode.
 270                  * If we are pt2pt, with an outstanding FLOGI, abort
 271                  * the FLOGI and resend it first.
 272                  */
 273                 if (phba->fc_flag & FC_PT2PT) {
 274                         lpfc_els_abort_flogi(phba);
 275                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 276                                 /* If the other side is supposed to initiate
 277                                  * the PLOGI anyway, just ACC it now and
 278                                  * move on with discovery.
 279                                  */
 280                                 phba->fc_edtov = FF_DEF_EDTOV;
 281                                 phba->fc_ratov = FF_DEF_RATOV;
 282                                 /* Start discovery - this should just do
 283                                    CLEAR_LA */
 284                                 lpfc_disc_start(phba);
 285                         }
 286                         else {
 287                                 lpfc_initial_flogi(phba);
 288                         }
 289                 }
 290                 else {
 291                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 292                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 293                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 294                                             ndlp);
 295                         return 0;
 296                 }
 297         }
 298         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 299         lp = (uint32_t *) pcmd->virt;
 300         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 301         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 302                 /* Reject this request because invalid parameters */
 303                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 304                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 305                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 306                 return (0);
 307         }
 308         icmd = &cmdiocb->iocb;
 309
 310         /* PLOGI chkparm OK */
 311         lpfc_printf_log(phba,
 312                         KERN_INFO,
 313                         LOG_ELS,
 314                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 315                         phba->brd_no,
 316                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 317                         ndlp->nlp_rpi);
 318
 319         if ((phba->cfg_fcp_class == 2) &&
 320             (sp->cls2.classValid)) {
 321                 ndlp->nlp_fcp_info |= CLASS2;
 322         } else {
 323                 ndlp->nlp_fcp_info |= CLASS3;
 324         }
 325         ndlp->nlp_class_sup = 0;
 326         if (sp->cls1.classValid)
 327                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 328         if (sp->cls2.classValid)
 329                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 330         if (sp->cls3.classValid)
 331                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 332         if (sp->cls4.classValid)
 333                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 334         ndlp->nlp_maxframe =
 335                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 336
 337         /* no need to reg_login if we are already in one of these states */
 338         switch(ndlp->nlp_state) {
 339         case  NLP_STE_NPR_NODE:
 340                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 341                         break;
 342         case  NLP_STE_REG_LOGIN_ISSUE:
 343         case  NLP_STE_PRLI_ISSUE:
 344         case  NLP_STE_UNMAPPED_NODE:
 345         case  NLP_STE_MAPPED_NODE:
 346                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 347                 return (1);
 348         }
 349
 350         if ((phba->fc_flag & FC_PT2PT)
 351             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 352                 /* rcv'ed PLOGI decides what our NPortId will be */
 353                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 354                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 355                 if (mbox == NULL)
 356                         goto out;
 357                 lpfc_config_link(phba, mbox);
 358                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 359                 rc = lpfc_sli_issue_mbox
 360                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 361                 if (rc == MBX_NOT_FINISHED) {
 362                         mempool_free( mbox, phba->mbox_mem_pool);
 363                         goto out;
 364                 }
 365
 366                 lpfc_can_disctmo(phba);
 367         }
 368         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 369         if (mbox == NULL)
 370                 goto out;
 371
 372         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 373                            (uint8_t *) sp, mbox, 0)) {
 374                 mempool_free( mbox, phba->mbox_mem_pool);
 375                 goto out;
 376         }
 377
 378         /* ACC PLOGI rsp command needs to execute first,
 379          * queue this mbox command to be processed later.
 380          */
 381         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 382         mbox->context2  = ndlp;
 383         ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
 384
 385         /* If there is an outstanding PLOGI issued, abort it before
 386          * sending ACC rsp to PLOGI recieved.
 387          */
 388         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 389                 /* software abort outstanding PLOGI */
 390                 lpfc_els_abort(phba, ndlp, 1);
 391         }
 392         ndlp->nlp_flag |= NLP_RCV_PLOGI;
 393         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 394         return (1);
 395
 396 out:
 397         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 398         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 399         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 400         return (0);
 401 }
 402
 403 static int
 404 lpfc_rcv_padisc(struct lpfc_hba * phba,
 405                 struct lpfc_nodelist * ndlp,
 406                 struct lpfc_iocbq *cmdiocb)
 407 {
 408         struct lpfc_dmabuf *pcmd;
 409         struct serv_parm *sp;
 410         struct lpfc_name *pnn, *ppn;
 411         struct ls_rjt stat;
 412         ADISC *ap;
 413         IOCB_t *icmd;
 414         uint32_t *lp;
 415         uint32_t cmd;
 416
 417         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 418         lp = (uint32_t *) pcmd->virt;
 419
 420         cmd = *lp++;
 421         if (cmd == ELS_CMD_ADISC) {
 422                 ap = (ADISC *) lp;
 423                 pnn = (struct lpfc_name *) & ap->nodeName;
 424                 ppn = (struct lpfc_name *) & ap->portName;
 425         } else {
 426                 sp = (struct serv_parm *) lp;
 427                 pnn = (struct lpfc_name *) & sp->nodeName;
 428                 ppn = (struct lpfc_name *) & sp->portName;
 429         }
 430
 431         icmd = &cmdiocb->iocb;
 432         if ((icmd->ulpStatus == 0) &&
 433             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 434                 if (cmd == ELS_CMD_ADISC) {
 435                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 436                 }
 437                 else {
 438                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 439                                 NULL, 0);
 440                 }
 441                 return (1);
 442         }
 443         /* Reject this request because invalid parameters */
 444         stat.un.b.lsRjtRsvd0 = 0;
 445         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 446         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 447         stat.un.b.vendorUnique = 0;
 448         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 449
 450         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 451         /* 1 sec timeout */
 452         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 453
 454         spin_lock_irq(phba->host->host_lock);
 455         ndlp->nlp_flag |= NLP_DELAY_TMO;
 456         spin_unlock_irq(phba->host->host_lock);
 457         ndlp->nlp_state = NLP_STE_NPR_NODE;
 458         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 459         return (0);
 460 }
 461
 462 static int
 463 lpfc_rcv_logo(struct lpfc_hba * phba,
 464                       struct lpfc_nodelist * ndlp,
 465                       struct lpfc_iocbq *cmdiocb)
 466 {
 467         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 468         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 469          * PLOGIs during LOGO storms from a device.
 470          */
 471         ndlp->nlp_flag |= NLP_LOGO_ACC;
 472         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 473
 474         if (!(ndlp->nlp_type & NLP_FABRIC)) {
 475                 /* Only try to re-login if this is NOT a Fabric Node */
 476                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 477                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 478                 spin_lock_irq(phba->host->host_lock);
 479                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 480                 spin_unlock_irq(phba->host->host_lock);
 481         }
 482
 483         ndlp->nlp_state = NLP_STE_NPR_NODE;
 484         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 485
 486         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 487         /* The driver has to wait until the ACC completes before it continues
 488          * processing the LOGO.  The action will resume in
 489          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 490          * unreg_login, the driver waits so the ACC does not get aborted.
 491          */
 492         return (0);
 493 }
 494
 495 static void
 496 lpfc_rcv_prli(struct lpfc_hba * phba,
 497                       struct lpfc_nodelist * ndlp,
 498                       struct lpfc_iocbq *cmdiocb)
 499 {
 500         struct lpfc_dmabuf *pcmd;
 501         uint32_t *lp;
 502         PRLI *npr;
 503         struct fc_rport *rport = ndlp->rport;
 504         u32 roles;
 505
 506         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 507         lp = (uint32_t *) pcmd->virt;
 508         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 509
 510         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 511         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 512         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 513             (npr->prliType == PRLI_FCP_TYPE)) {
 514                 if (npr->initiatorFunc)
 515                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 516                 if (npr->targetFunc)
 517                         ndlp->nlp_type |= NLP_FCP_TARGET;
 518                 if (npr->Retry)
 519                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 520         }
 521         if (rport) {
 522                 /* We need to update the rport role values */
 523                 roles = FC_RPORT_ROLE_UNKNOWN;
 524                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 525                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 526                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 527                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 528                 fc_remote_port_rolechg(rport, roles);
 529         }
 530 }
 531
 532 static uint32_t
 533 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 534                       struct lpfc_nodelist * ndlp)
 535 {
 536         /* Check config parameter use-adisc or FCP-2 */
 537         if ((phba->cfg_use_adisc == 0) &&
 538                 !(phba->fc_flag & FC_RSCN_MODE)) {
 539                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 540                         return (0);
 541         }
 542         spin_lock_irq(phba->host->host_lock);
 543         ndlp->nlp_flag |= NLP_NPR_ADISC;
 544         spin_unlock_irq(phba->host->host_lock);
 545         return (1);
 546 }
 547
 548 static uint32_t
 549 lpfc_disc_noop(struct lpfc_hba * phba,
 550                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 551 {
 552         /* This routine does nothing, just return the current state */
 553         return (ndlp->nlp_state);
 554 }
 555
 556 static uint32_t
 557 lpfc_disc_illegal(struct lpfc_hba * phba,
 558                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 559 {
 560         lpfc_printf_log(phba,
 561                         KERN_ERR,
 562                         LOG_DISCOVERY,
 563                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 564                         "state x%x Data: x%x x%x\n",
 565                         phba->brd_no,
 566                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 567                         ndlp->nlp_flag);
 568         return (ndlp->nlp_state);
 569 }
 570
 571 /* Start of Discovery State Machine routines */
 572
 573 static uint32_t
 574 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 575                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 576 {
 577         struct lpfc_iocbq *cmdiocb;
 578
 579         cmdiocb = (struct lpfc_iocbq *) arg;
 580
 581         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 582                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 583                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 584                 return (ndlp->nlp_state);
 585         }
 586         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 587         return (NLP_STE_FREED_NODE);
 588 }
 589
 590 static uint32_t
 591 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 592                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 593 {
 594         lpfc_issue_els_logo(phba, ndlp, 0);
 595         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 596         return (ndlp->nlp_state);
 597 }
 598
 599 static uint32_t
 600 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 601                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 602 {
 603         struct lpfc_iocbq     *cmdiocb;
 604
 605         cmdiocb = (struct lpfc_iocbq *) arg;
 606
 607         spin_lock_irq(phba->host->host_lock);
 608         ndlp->nlp_flag |= NLP_LOGO_ACC;
 609         spin_unlock_irq(phba->host->host_lock);
 610         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 611         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 612
 613         return (ndlp->nlp_state);
 614 }
 615
 616 static uint32_t
 617 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 618                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 619 {
 620         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 621         return (NLP_STE_FREED_NODE);
 622 }
 623
 624 static uint32_t
 625 lpfc_device_rm_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_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 634                            void *arg, uint32_t evt)
 635 {
 636         struct lpfc_iocbq *cmdiocb = arg;
 637         struct lpfc_dmabuf *pcmd;
 638         struct serv_parm *sp;
 639         uint32_t *lp;
 640         struct ls_rjt stat;
 641         int port_cmp;
 642
 643         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 644         lp = (uint32_t *) pcmd->virt;
 645         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 646
 647         memset(&stat, 0, sizeof (struct ls_rjt));
 648
 649         /* For a PLOGI, we only accept if our portname is less
 650          * than the remote portname.
 651          */
 652         phba->fc_stat.elsLogiCol++;
 653         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 654                           sizeof (struct lpfc_name));
 655
 656         if (port_cmp >= 0) {
 657                 /* Reject this request because the remote node will accept
 658                    ours */
 659                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 660                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 661                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 662         }
 663         else {
 664                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 665         } /* if our portname was less */
 666
 667         return (ndlp->nlp_state);
 668 }
 669
 670 static uint32_t
 671 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 672                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 673 {
 674         struct lpfc_iocbq     *cmdiocb;
 675
 676         cmdiocb = (struct lpfc_iocbq *) arg;
 677
 678         /* software abort outstanding PLOGI */
 679         lpfc_els_abort(phba, ndlp, 1);
 680         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 681         spin_lock_irq(phba->host->host_lock);
 682         ndlp->nlp_flag |= NLP_DELAY_TMO;
 683         spin_unlock_irq(phba->host->host_lock);
 684
 685         if (evt == NLP_EVT_RCV_LOGO) {
 686                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 687         }
 688         else {
 689                 lpfc_issue_els_logo(phba, ndlp, 0);
 690         }
 691
 692         /* Put ndlp in npr list set plogi timer for 1 sec */
 693         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 694         ndlp->nlp_state = NLP_STE_NPR_NODE;
 695         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 696
 697         return (ndlp->nlp_state);
 698 }
 699
 700 static uint32_t
 701 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 702                             struct lpfc_nodelist * ndlp, void *arg,
 703                             uint32_t evt)
 704 {
 705         struct lpfc_iocbq *cmdiocb, *rspiocb;
 706         struct lpfc_dmabuf *pcmd, *prsp;
 707         uint32_t *lp;
 708         IOCB_t *irsp;
 709         struct serv_parm *sp;
 710         LPFC_MBOXQ_t *mbox;
 711
 712         cmdiocb = (struct lpfc_iocbq *) arg;
 713         rspiocb = cmdiocb->context_un.rsp_iocb;
 714
 715         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 716                 return (ndlp->nlp_state);
 717         }
 718
 719         irsp = &rspiocb->iocb;
 720
 721         if (irsp->ulpStatus)
 722                 goto out;
 723
 724         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 725
 726         prsp = list_get_first(&pcmd->list,
 727                               struct lpfc_dmabuf,
 728                               list);
 729         lp = (uint32_t *) prsp->virt;
 730
 731         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 732         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 733                 goto out;
 734
 735         /* PLOGI chkparm OK */
 736         lpfc_printf_log(phba,
 737                         KERN_INFO,
 738                         LOG_ELS,
 739                         "%d:0121 PLOGI chkparm OK "
 740                         "Data: x%x x%x x%x x%x\n",
 741                         phba->brd_no,
 742                         ndlp->nlp_DID, ndlp->nlp_state,
 743                         ndlp->nlp_flag, ndlp->nlp_rpi);
 744
 745         if ((phba->cfg_fcp_class == 2) &&
 746             (sp->cls2.classValid)) {
 747                 ndlp->nlp_fcp_info |= CLASS2;
 748         } else {
 749                 ndlp->nlp_fcp_info |= CLASS3;
 750         }
 751         ndlp->nlp_class_sup = 0;
 752         if (sp->cls1.classValid)
 753                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 754         if (sp->cls2.classValid)
 755                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 756         if (sp->cls3.classValid)
 757                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 758         if (sp->cls4.classValid)
 759                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 760         ndlp->nlp_maxframe =
 761                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 762                 sp->cmn.bbRcvSizeLsb;
 763
 764         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 765                                    GFP_KERNEL)))
 766                 goto out;
 767
 768         lpfc_unreg_rpi(phba, ndlp);
 769         if (lpfc_reg_login
 770             (phba, irsp->un.elsreq64.remoteID,
 771              (uint8_t *) sp, mbox, 0) == 0) {
 772                 /* set_slim mailbox command needs to
 773                  * execute first, queue this command to
 774                  * be processed later.
 775                  */
 776                 switch(ndlp->nlp_DID) {
 777                 case NameServer_DID:
 778                         mbox->mbox_cmpl =
 779                                 lpfc_mbx_cmpl_ns_reg_login;
 780                         break;
 781                 case FDMI_DID:
 782                         mbox->mbox_cmpl =
 783                                 lpfc_mbx_cmpl_fdmi_reg_login;
 784                         break;
 785                 default:
 786                         mbox->mbox_cmpl =
 787                                 lpfc_mbx_cmpl_reg_login;
 788                 }
 789                 mbox->context2 = ndlp;
 790                 if (lpfc_sli_issue_mbox(phba, mbox,
 791                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 792                     != MBX_NOT_FINISHED) {
 793                         ndlp->nlp_state =
 794                                 NLP_STE_REG_LOGIN_ISSUE;
 795                         lpfc_nlp_list(phba, ndlp,
 796                                       NLP_REGLOGIN_LIST);
 797                         return (ndlp->nlp_state);
 798                 }
 799                 mempool_free(mbox, phba->mbox_mem_pool);
 800         } else {
 801                 mempool_free(mbox, phba->mbox_mem_pool);
 802         }
 803
 804
 805  out:
 806         /* Free this node since the driver cannot login or has the wrong
 807            sparm */
 808         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 809         return (NLP_STE_FREED_NODE);
 810 }
 811
 812 static uint32_t
 813 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 814                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 815 {
 816         /* software abort outstanding PLOGI */
 817         lpfc_els_abort(phba, ndlp, 1);
 818
 819         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 820         return (NLP_STE_FREED_NODE);
 821 }
 822
 823 static uint32_t
 824 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 825                             struct lpfc_nodelist * ndlp, void *arg,
 826                             uint32_t evt)
 827 {
 828         /* software abort outstanding PLOGI */
 829         lpfc_els_abort(phba, ndlp, 1);
 830
 831         ndlp->nlp_state = NLP_STE_NPR_NODE;
 832         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 833         spin_lock_irq(phba->host->host_lock);
 834         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 835         spin_unlock_irq(phba->host->host_lock);
 836
 837         return (ndlp->nlp_state);
 838 }
 839
 840 static uint32_t
 841 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 842                             struct lpfc_nodelist * ndlp, void *arg,
 843                             uint32_t evt)
 844 {
 845         struct lpfc_iocbq *cmdiocb;
 846
 847         /* software abort outstanding ADISC */
 848         lpfc_els_abort(phba, ndlp, 1);
 849
 850         cmdiocb = (struct lpfc_iocbq *) arg;
 851
 852         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 853                 return (ndlp->nlp_state);
 854         }
 855         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 856         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 857         lpfc_issue_els_plogi(phba, ndlp, 0);
 858
 859         return (ndlp->nlp_state);
 860 }
 861
 862 static uint32_t
 863 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 864                             struct lpfc_nodelist * ndlp, void *arg,
 865                             uint32_t evt)
 866 {
 867         struct lpfc_iocbq *cmdiocb;
 868
 869         cmdiocb = (struct lpfc_iocbq *) arg;
 870
 871         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 872         return (ndlp->nlp_state);
 873 }
 874
 875 static uint32_t
 876 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 877                             struct lpfc_nodelist * ndlp, void *arg,
 878                             uint32_t evt)
 879 {
 880         struct lpfc_iocbq *cmdiocb;
 881
 882         cmdiocb = (struct lpfc_iocbq *) arg;
 883
 884         /* software abort outstanding ADISC */
 885         lpfc_els_abort(phba, ndlp, 0);
 886
 887         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 888         return (ndlp->nlp_state);
 889 }
 890
 891 static uint32_t
 892 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 893                             struct lpfc_nodelist * ndlp, void *arg,
 894                             uint32_t evt)
 895 {
 896         struct lpfc_iocbq *cmdiocb;
 897
 898         cmdiocb = (struct lpfc_iocbq *) arg;
 899
 900         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 901         return (ndlp->nlp_state);
 902 }
 903
 904 static uint32_t
 905 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 906                             struct lpfc_nodelist * ndlp, void *arg,
 907                             uint32_t evt)
 908 {
 909         struct lpfc_iocbq *cmdiocb;
 910
 911         cmdiocb = (struct lpfc_iocbq *) arg;
 912
 913         /* Treat like rcv logo */
 914         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 915         return (ndlp->nlp_state);
 916 }
 917
 918 static uint32_t
 919 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 920                             struct lpfc_nodelist * ndlp, void *arg,
 921                             uint32_t evt)
 922 {
 923         struct lpfc_iocbq *cmdiocb, *rspiocb;
 924         IOCB_t *irsp;
 925         ADISC *ap;
 926
 927         cmdiocb = (struct lpfc_iocbq *) arg;
 928         rspiocb = cmdiocb->context_un.rsp_iocb;
 929
 930         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 931         irsp = &rspiocb->iocb;
 932
 933         if ((irsp->ulpStatus) ||
 934                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 935                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 936                 /* 1 sec timeout */
 937                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 938                 spin_lock_irq(phba->host->host_lock);
 939                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 940                 spin_unlock_irq(phba->host->host_lock);
 941
 942                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 943                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 944
 945                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 946                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 947                 lpfc_unreg_rpi(phba, ndlp);
 948                 return (ndlp->nlp_state);
 949         }
 950         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 951                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 952                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 953         } else {
 954                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 955                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 956         }
 957         return (ndlp->nlp_state);
 958 }
 959
 960 static uint32_t
 961 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 962                             struct lpfc_nodelist * ndlp, void *arg,
 963                             uint32_t evt)
 964 {
 965         /* software abort outstanding ADISC */
 966         lpfc_els_abort(phba, ndlp, 1);
 967
 968         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 969         return (NLP_STE_FREED_NODE);
 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, 1);
 979
 980         ndlp->nlp_state = NLP_STE_NPR_NODE;
 981         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 982         spin_lock_irq(phba->host->host_lock);
 983         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 984         spin_unlock_irq(phba->host->host_lock);
 985
 986         lpfc_disc_set_adisc(phba, ndlp);
 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);
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_ACC, 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                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1076                 spin_lock_irq(phba->host->host_lock);
1077                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1078                 spin_unlock_irq(phba->host->host_lock);
1079
1080                 lpfc_issue_els_logo(phba, ndlp, 0);
1081                 /* Put ndlp in npr list set plogi timer for 1 sec */
1082                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1083                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1084                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1085                 return (ndlp->nlp_state);
1086         }
1087
1088         if (ndlp->nlp_rpi != 0)
1089                 lpfc_findnode_remove_rpi(phba, ndlp->nlp_rpi);
1090
1091         ndlp->nlp_rpi = mb->un.varWords[0];
1092         lpfc_addnode_rpi(phba, ndlp, ndlp->nlp_rpi);
1093
1094         /* Only if we are not a fabric nport do we issue PRLI */
1095         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1096                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1097                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1098                 lpfc_issue_els_prli(phba, ndlp, 0);
1099         } else {
1100                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1101                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1102         }
1103         return (ndlp->nlp_state);
1104 }
1105
1106 static uint32_t
1107 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1108                               struct lpfc_nodelist * ndlp, void *arg,
1109                               uint32_t evt)
1110 {
1111         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1112         return (NLP_STE_FREED_NODE);
1113 }
1114
1115 static uint32_t
1116 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1117                                struct lpfc_nodelist * ndlp, void *arg,
1118                                uint32_t evt)
1119 {
1120         ndlp->nlp_state = NLP_STE_NPR_NODE;
1121         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1122         spin_lock_irq(phba->host->host_lock);
1123         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1124         spin_unlock_irq(phba->host->host_lock);
1125         return (ndlp->nlp_state);
1126 }
1127
1128 static uint32_t
1129 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1130                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1131 {
1132         struct lpfc_iocbq *cmdiocb;
1133
1134         cmdiocb = (struct lpfc_iocbq *) arg;
1135
1136         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1137         return (ndlp->nlp_state);
1138 }
1139
1140 static uint32_t
1141 lpfc_rcv_prli_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_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1149         return (ndlp->nlp_state);
1150 }
1151
1152 static uint32_t
1153 lpfc_rcv_logo_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         /* Software abort outstanding PRLI before sending acc */
1161         lpfc_els_abort(phba, ndlp, 1);
1162
1163         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1164         return (ndlp->nlp_state);
1165 }
1166
1167 static uint32_t
1168 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1169                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1170 {
1171         struct lpfc_iocbq *cmdiocb;
1172
1173         cmdiocb = (struct lpfc_iocbq *) arg;
1174
1175         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1176         return (ndlp->nlp_state);
1177 }
1178
1179 /* This routine is envoked when we rcv a PRLO request from a nport
1180  * we are logged into.  We should send back a PRLO rsp setting the
1181  * appropriate bits.
1182  * NEXT STATE = PRLI_ISSUE
1183  */
1184 static uint32_t
1185 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1186                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1187 {
1188         struct lpfc_iocbq *cmdiocb;
1189
1190         cmdiocb = (struct lpfc_iocbq *) arg;
1191         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1192         return (ndlp->nlp_state);
1193 }
1194
1195 static uint32_t
1196 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1197                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1198 {
1199         struct lpfc_iocbq *cmdiocb, *rspiocb;
1200         IOCB_t *irsp;
1201         PRLI *npr;
1202
1203         cmdiocb = (struct lpfc_iocbq *) arg;
1204         rspiocb = cmdiocb->context_un.rsp_iocb;
1205         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1206
1207         irsp = &rspiocb->iocb;
1208         if (irsp->ulpStatus) {
1209                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1210                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1211                 return (ndlp->nlp_state);
1212         }
1213
1214         /* Check out PRLI rsp */
1215         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1216         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1217         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1218             (npr->prliType == PRLI_FCP_TYPE)) {
1219                 if (npr->initiatorFunc)
1220                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1221                 if (npr->targetFunc)
1222                         ndlp->nlp_type |= NLP_FCP_TARGET;
1223                 if (npr->Retry)
1224                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1225         }
1226
1227         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1228         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1229         return (ndlp->nlp_state);
1230 }
1231
1232 /*! lpfc_device_rm_prli_issue
1233   *
1234   * \pre
1235   * \post
1236   * \param   phba
1237   * \param   ndlp
1238   * \param   arg
1239   * \param   evt
1240   * \return  uint32_t
1241   *
1242   * \b Description:
1243   *    This routine is envoked when we a request to remove a nport we are in the
1244   *    process of PRLIing. We should software abort outstanding prli, unreg
1245   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1246   *    on plogi list so it can be freed when LOGO completes.
1247   *
1248   */
1249 static uint32_t
1250 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1251                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1252 {
1253         /* software abort outstanding PRLI */
1254         lpfc_els_abort(phba, ndlp, 1);
1255
1256         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1257         return (NLP_STE_FREED_NODE);
1258 }
1259
1260
1261 /*! lpfc_device_recov_prli_issue
1262   *
1263   * \pre
1264   * \post
1265   * \param   phba
1266   * \param   ndlp
1267   * \param   arg
1268   * \param   evt
1269   * \return  uint32_t
1270   *
1271   * \b Description:
1272   *    The routine is envoked when the state of a device is unknown, like
1273   *    during a link down. We should remove the nodelist entry from the
1274   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1275   *    outstanding PRLI command, then free the node entry.
1276   */
1277 static uint32_t
1278 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1279                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1280 {
1281         /* software abort outstanding PRLI */
1282         lpfc_els_abort(phba, ndlp, 1);
1283
1284         ndlp->nlp_state = NLP_STE_NPR_NODE;
1285         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1286         spin_lock_irq(phba->host->host_lock);
1287         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1288         spin_unlock_irq(phba->host->host_lock);
1289         return (ndlp->nlp_state);
1290 }
1291
1292 static uint32_t
1293 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1294                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1295 {
1296         struct lpfc_iocbq *cmdiocb;
1297
1298         cmdiocb = (struct lpfc_iocbq *) arg;
1299
1300         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1301         return (ndlp->nlp_state);
1302 }
1303
1304 static uint32_t
1305 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1306                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1307 {
1308         struct lpfc_iocbq *cmdiocb;
1309
1310         cmdiocb = (struct lpfc_iocbq *) arg;
1311
1312         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1313         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1314         return (ndlp->nlp_state);
1315 }
1316
1317 static uint32_t
1318 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1319                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1320 {
1321         struct lpfc_iocbq *cmdiocb;
1322
1323         cmdiocb = (struct lpfc_iocbq *) arg;
1324
1325         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1326         return (ndlp->nlp_state);
1327 }
1328
1329 static uint32_t
1330 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1331                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1332 {
1333         struct lpfc_iocbq *cmdiocb;
1334
1335         cmdiocb = (struct lpfc_iocbq *) arg;
1336
1337         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1338         return (ndlp->nlp_state);
1339 }
1340
1341 static uint32_t
1342 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1343                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1344 {
1345         struct lpfc_iocbq *cmdiocb;
1346
1347         cmdiocb = (struct lpfc_iocbq *) arg;
1348
1349         /* Treat like rcv logo */
1350         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1351         return (ndlp->nlp_state);
1352 }
1353
1354 static uint32_t
1355 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1356                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1357 {
1358         ndlp->nlp_state = NLP_STE_NPR_NODE;
1359         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1360         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1361         lpfc_disc_set_adisc(phba, ndlp);
1362
1363         return (ndlp->nlp_state);
1364 }
1365
1366 static uint32_t
1367 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1368                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1369 {
1370         struct lpfc_iocbq *cmdiocb;
1371
1372         cmdiocb = (struct lpfc_iocbq *) arg;
1373
1374         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1375         return (ndlp->nlp_state);
1376 }
1377
1378 static uint32_t
1379 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1380                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1381 {
1382         struct lpfc_iocbq *cmdiocb;
1383
1384         cmdiocb = (struct lpfc_iocbq *) arg;
1385
1386         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1387         return (ndlp->nlp_state);
1388 }
1389
1390 static uint32_t
1391 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1392                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1393 {
1394         struct lpfc_iocbq *cmdiocb;
1395
1396         cmdiocb = (struct lpfc_iocbq *) arg;
1397
1398         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1399         return (ndlp->nlp_state);
1400 }
1401
1402 static uint32_t
1403 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1404                             struct lpfc_nodelist * ndlp, void *arg,
1405                             uint32_t evt)
1406 {
1407         struct lpfc_iocbq *cmdiocb;
1408
1409         cmdiocb = (struct lpfc_iocbq *) arg;
1410
1411         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1412         return (ndlp->nlp_state);
1413 }
1414
1415 static uint32_t
1416 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1417                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1418 {
1419         struct lpfc_iocbq *cmdiocb;
1420
1421         cmdiocb = (struct lpfc_iocbq *) arg;
1422
1423         /* flush the target */
1424         spin_lock_irq(phba->host->host_lock);
1425         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1426                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1427         spin_unlock_irq(phba->host->host_lock);
1428
1429         /* Treat like rcv logo */
1430         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1431         return (ndlp->nlp_state);
1432 }
1433
1434 static uint32_t
1435 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1436                             struct lpfc_nodelist * ndlp, void *arg,
1437                             uint32_t evt)
1438 {
1439         ndlp->nlp_state = NLP_STE_NPR_NODE;
1440         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1441         spin_lock_irq(phba->host->host_lock);
1442         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1443         spin_unlock_irq(phba->host->host_lock);
1444         lpfc_disc_set_adisc(phba, ndlp);
1445         return (ndlp->nlp_state);
1446 }
1447
1448 static uint32_t
1449 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1450                             struct lpfc_nodelist * ndlp, void *arg,
1451                             uint32_t evt)
1452 {
1453         struct lpfc_iocbq *cmdiocb;
1454
1455         cmdiocb = (struct lpfc_iocbq *) arg;
1456
1457         /* Ignore PLOGI if we have an outstanding LOGO */
1458         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1459                 return (ndlp->nlp_state);
1460         }
1461
1462         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1463                 spin_lock_irq(phba->host->host_lock);
1464                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1465                 spin_unlock_irq(phba->host->host_lock);
1466                 return (ndlp->nlp_state);
1467         }
1468
1469         /* send PLOGI immediately, move to PLOGI issue state */
1470         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1471                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1472                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1473                         lpfc_issue_els_plogi(phba, ndlp, 0);
1474         }
1475         return (ndlp->nlp_state);
1476 }
1477
1478 static uint32_t
1479 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1480                             struct lpfc_nodelist * ndlp, void *arg,
1481                             uint32_t evt)
1482 {
1483         struct lpfc_iocbq     *cmdiocb;
1484         struct ls_rjt          stat;
1485
1486         cmdiocb = (struct lpfc_iocbq *) arg;
1487
1488         memset(&stat, 0, sizeof (struct ls_rjt));
1489         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1490         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1491         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1492
1493         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1494                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1495                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1496                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1497                         lpfc_issue_els_adisc(phba, ndlp, 0);
1498                 } else {
1499                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1500                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1501                         lpfc_issue_els_plogi(phba, ndlp, 0);
1502                 }
1503         }
1504         return (ndlp->nlp_state);
1505 }
1506
1507 static uint32_t
1508 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1509                             struct lpfc_nodelist * ndlp, void *arg,
1510                             uint32_t evt)
1511 {
1512         struct lpfc_iocbq     *cmdiocb;
1513
1514         cmdiocb = (struct lpfc_iocbq *) arg;
1515
1516         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1517         return (ndlp->nlp_state);
1518 }
1519
1520 static uint32_t
1521 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1522                             struct lpfc_nodelist * ndlp, void *arg,
1523                             uint32_t evt)
1524 {
1525         struct lpfc_iocbq     *cmdiocb;
1526
1527         cmdiocb = (struct lpfc_iocbq *) arg;
1528
1529         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1530
1531         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1532                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1533                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1534                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1535                         lpfc_issue_els_adisc(phba, ndlp, 0);
1536                 } else {
1537                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1538                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1539                         lpfc_issue_els_plogi(phba, ndlp, 0);
1540                 }
1541         }
1542         return (ndlp->nlp_state);
1543 }
1544
1545 static uint32_t
1546 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1547                             struct lpfc_nodelist * ndlp, void *arg,
1548                             uint32_t evt)
1549 {
1550         struct lpfc_iocbq     *cmdiocb;
1551
1552         cmdiocb = (struct lpfc_iocbq *) arg;
1553
1554         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1555
1556         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1557                 if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
1558                         return (ndlp->nlp_state);
1559                 } else {
1560                         spin_lock_irq(phba->host->host_lock);
1561                         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1562                         spin_unlock_irq(phba->host->host_lock);
1563                         del_timer_sync(&ndlp->nlp_delayfunc);
1564                         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1565                                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1566                 }
1567         }
1568
1569         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1570         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1571         lpfc_issue_els_plogi(phba, ndlp, 0);
1572         return (ndlp->nlp_state);
1573 }
1574
1575 static uint32_t
1576 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1577                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1578 {
1579         lpfc_unreg_rpi(phba, ndlp);
1580         /* This routine does nothing, just return the current state */
1581         return (ndlp->nlp_state);
1582 }
1583
1584 static uint32_t
1585 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1586                             struct lpfc_nodelist * ndlp, void *arg,
1587                             uint32_t evt)
1588 {
1589         LPFC_MBOXQ_t *pmb;
1590         MAILBOX_t *mb;
1591
1592         pmb = (LPFC_MBOXQ_t *) arg;
1593         mb = &pmb->mb;
1594
1595         /* save rpi */
1596         if (ndlp->nlp_rpi != 0)
1597                 lpfc_findnode_remove_rpi(phba, ndlp->nlp_rpi);
1598
1599         ndlp->nlp_rpi = mb->un.varWords[0];
1600         lpfc_addnode_rpi(phba, ndlp, ndlp->nlp_rpi);
1601
1602         return (ndlp->nlp_state);
1603 }
1604
1605 static uint32_t
1606 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1607                             struct lpfc_nodelist * ndlp, void *arg,
1608                             uint32_t evt)
1609 {
1610         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1611         return (NLP_STE_FREED_NODE);
1612 }
1613
1614 static uint32_t
1615 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1616                             struct lpfc_nodelist * ndlp, void *arg,
1617                             uint32_t evt)
1618 {
1619         spin_lock_irq(phba->host->host_lock);
1620         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1621         spin_unlock_irq(phba->host->host_lock);
1622         return (ndlp->nlp_state);
1623 }
1624
1625
1626 /* This next section defines the NPort Discovery State Machine */
1627
1628 /* There are 4 different double linked lists nodelist entries can reside on.
1629  * The plogi list and adisc list are used when Link Up discovery or RSCN
1630  * processing is needed. Each list holds the nodes that we will send PLOGI
1631  * or ADISC on. These lists will keep track of what nodes will be effected
1632  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1633  * The unmapped_list will contain all nodes that we have successfully logged
1634  * into at the Fibre Channel level. The mapped_list will contain all nodes
1635  * that are mapped FCP targets.
1636  */
1637 /*
1638  * The bind list is a list of undiscovered (potentially non-existent) nodes
1639  * that we have saved binding information on. This information is used when
1640  * nodes transition from the unmapped to the mapped list.
1641  */
1642 /* For UNUSED_NODE state, the node has just been allocated .
1643  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1644  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1645  * and put on the unmapped list. For ADISC processing, the node is taken off
1646  * the ADISC list and placed on either the mapped or unmapped list (depending
1647  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1648  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1649  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1650  * node, the node is taken off the unmapped list. The binding list is checked
1651  * for a valid binding, or a binding is automatically assigned. If binding
1652  * assignment is unsuccessful, the node is left on the unmapped list. If
1653  * binding assignment is successful, the associated binding list entry (if
1654  * any) is removed, and the node is placed on the mapped list.
1655  */
1656 /*
1657  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1658  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1659  * expire, all effected nodes will receive a DEVICE_RM event.
1660  */
1661 /*
1662  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1663  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1664  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1665  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1666  * we will first process the ADISC list.  32 entries are processed initially and
1667  * ADISC is initited for each one.  Completions / Events for each node are
1668  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1669  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1670  * waiting, and the ADISC list count is identically 0, then we are done. For
1671  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1672  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1673  * list.  32 entries are processed initially and PLOGI is initited for each one.
1674  * Completions / Events for each node are funnelled thru the state machine.  As
1675  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1676  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1677  * indentically 0, then we are done. We have now completed discovery / RSCN
1678  * handling. Upon completion, ALL nodes should be on either the mapped or
1679  * unmapped lists.
1680  */
1681
1682 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1683      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1684         /* Action routine                  Event       Current State  */
1685         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1686         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1687         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1688         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1689         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1690         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1691         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1692         lpfc_disc_illegal,              /* CMPL_PRLI       */
1693         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1694         lpfc_disc_illegal,              /* CMPL_ADISC      */
1695         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1696         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1697         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1698
1699         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1700         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1701         lpfc_rcv_els_plogi_issue,       /* RCV_LOGO        */
1702         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1703         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1704         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1705         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1706         lpfc_disc_illegal,              /* CMPL_PRLI       */
1707         lpfc_disc_illegal,              /* CMPL_LOGO       */
1708         lpfc_disc_illegal,              /* CMPL_ADISC      */
1709         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1710         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1711         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1712
1713         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1714         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1715         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1716         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1717         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1718         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1719         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1720         lpfc_disc_illegal,              /* CMPL_PRLI       */
1721         lpfc_disc_illegal,              /* CMPL_LOGO       */
1722         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1723         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1724         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1725         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1726
1727         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1728         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1729         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1730         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1731         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1732         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1733         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1734         lpfc_disc_illegal,              /* CMPL_PRLI       */
1735         lpfc_disc_illegal,              /* CMPL_LOGO       */
1736         lpfc_disc_illegal,              /* CMPL_ADISC      */
1737         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1738         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1739         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1740
1741         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1742         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1743         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1744         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1745         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1746         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1747         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1748         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1749         lpfc_disc_illegal,              /* CMPL_LOGO       */
1750         lpfc_disc_illegal,              /* CMPL_ADISC      */
1751         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1752         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1753         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1754
1755         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1756         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1757         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1758         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1759         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1760         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1761         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1762         lpfc_disc_illegal,              /* CMPL_PRLI       */
1763         lpfc_disc_illegal,              /* CMPL_LOGO       */
1764         lpfc_disc_illegal,              /* CMPL_ADISC      */
1765         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1766         lpfc_disc_illegal,              /* DEVICE_RM       */
1767         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1768
1769         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1770         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1771         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1772         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1773         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1774         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1775         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1776         lpfc_disc_illegal,              /* CMPL_PRLI       */
1777         lpfc_disc_illegal,              /* CMPL_LOGO       */
1778         lpfc_disc_illegal,              /* CMPL_ADISC      */
1779         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1780         lpfc_disc_illegal,              /* DEVICE_RM       */
1781         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1782
1783         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1784         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1785         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1786         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1787         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1788         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1789         lpfc_disc_noop,                 /* CMPL_PLOGI      */
1790         lpfc_disc_noop,                 /* CMPL_PRLI       */
1791         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1792         lpfc_disc_noop,                 /* CMPL_ADISC      */
1793         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1794         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1795         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1796 };
1797
1798 int
1799 lpfc_disc_state_machine(struct lpfc_hba * phba,
1800                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1801 {
1802         uint32_t cur_state, rc;
1803         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1804                          uint32_t);
1805
1806         ndlp->nlp_disc_refcnt++;
1807         cur_state = ndlp->nlp_state;
1808
1809         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1810         lpfc_printf_log(phba,
1811                         KERN_INFO,
1812                         LOG_DISCOVERY,
1813                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1814                         "Data: x%x\n",
1815                         phba->brd_no,
1816                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1817
1818         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1819         rc = (func) (phba, ndlp, arg, evt);
1820
1821         /* DSM out state <rc> on NPort <nlp_DID> */
1822         lpfc_printf_log(phba,
1823                        KERN_INFO,
1824                        LOG_DISCOVERY,
1825                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1826                        phba->brd_no,
1827                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1828
1829         ndlp->nlp_disc_refcnt--;
1830
1831         /* Check to see if ndlp removal is deferred */
1832         if ((ndlp->nlp_disc_refcnt == 0)
1833             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1834                 spin_lock_irq(phba->host->host_lock);
1835                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1836                 spin_unlock_irq(phba->host->host_lock);
1837                 lpfc_nlp_remove(phba, ndlp);
1838                 return (NLP_STE_FREED_NODE);
1839         }
1840         if (rc == NLP_STE_FREED_NODE)
1841                 return (NLP_STE_FREED_NODE);
1842         ndlp->nlp_state = rc;
1843         return (rc);
1844 }