drivers/scsi/lpfc/lpfc_nportdisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Enterprise Fibre Channel Host Bus Adapters.                     *
   4  * Refer to the README file included with this package for         *
   5  * driver version and adapter support.                             *
   6  * Copyright (C) 2004 Emulex Corporation.                          *
   7  * www.emulex.com                                                  *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of the GNU General Public License     *
  11  * as published by the Free Software Foundation; either version 2  *
  12  * of the License, or (at your option) any later version.          *
  13  *                                                                 *
  14  * This program is distributed in the hope that it will be useful, *
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
  17  * GNU General Public License for more details, a copy of which    *
  18  * can be found in the file COPYING included with this package.    *
  19  *******************************************************************/
  20
  21 /*
  22  * $Id: lpfc_nportdisc.c 1.179 2005/04/13 11:59:13EDT sf_support Exp  $
  23  */
  24
  25 #include <linux/blkdev.h>
  26 #include <linux/pci.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi_device.h>
  30 #include <scsi/scsi_host.h>
  31 #include <scsi/scsi_transport_fc.h>
  32
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_scsi.h"
  37 #include "lpfc.h"
  38 #include "lpfc_logmsg.h"
  39 #include "lpfc_crtn.h"
  40
  41
  42 /* Called to verify a rcv'ed ADISC was intended for us. */
  43 static int
  44 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
  45                  struct lpfc_name * nn, struct lpfc_name * pn)
  46 {
  47         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  48          * table entry for that node.
  49          */
  50         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
  51                 return (0);
  52
  53         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
  54                 return (0);
  55
  56         /* we match, return success */
  57         return (1);
  58 }
  59
  60
  61 int
  62 lpfc_check_sparm(struct lpfc_hba * phba,
  63                  struct lpfc_nodelist * ndlp, struct serv_parm * sp,
  64                  uint32_t class)
  65 {
  66         volatile struct serv_parm *hsp = &phba->fc_sparam;
  67         /* First check for supported version */
  68
  69         /* Next check for class validity */
  70         if (sp->cls1.classValid) {
  71
  72                 if (sp->cls1.rcvDataSizeMsb > hsp->cls1.rcvDataSizeMsb)
  73                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  74                 if (sp->cls1.rcvDataSizeLsb > hsp->cls1.rcvDataSizeLsb)
  75                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  76         } else if (class == CLASS1) {
  77                 return (0);
  78         }
  79
  80         if (sp->cls2.classValid) {
  81
  82                 if (sp->cls2.rcvDataSizeMsb > hsp->cls2.rcvDataSizeMsb)
  83                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  84                 if (sp->cls2.rcvDataSizeLsb > hsp->cls2.rcvDataSizeLsb)
  85                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  86         } else if (class == CLASS2) {
  87                 return (0);
  88         }
  89
  90         if (sp->cls3.classValid) {
  91
  92                 if (sp->cls3.rcvDataSizeMsb > hsp->cls3.rcvDataSizeMsb)
  93                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
  94                 if (sp->cls3.rcvDataSizeLsb > hsp->cls3.rcvDataSizeLsb)
  95                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
  96         } else if (class == CLASS3) {
  97                 return (0);
  98         }
  99
 100         if (sp->cmn.bbRcvSizeMsb > hsp->cmn.bbRcvSizeMsb)
 101                 sp->cmn.bbRcvSizeMsb = hsp->cmn.bbRcvSizeMsb;
 102         if (sp->cmn.bbRcvSizeLsb > hsp->cmn.bbRcvSizeLsb)
 103                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 104
 105         /* If check is good, copy wwpn wwnn into ndlp */
 106         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 107         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 108         return (1);
 109 }
 110
 111 static void *
 112 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 113                       struct lpfc_iocbq *cmdiocb,
 114                       struct lpfc_iocbq *rspiocb)
 115 {
 116         struct lpfc_dmabuf *pcmd, *prsp;
 117         uint32_t *lp;
 118         void     *ptr = NULL;
 119         IOCB_t   *irsp;
 120
 121         irsp = &rspiocb->iocb;
 122         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 123
 124         /* For lpfc_els_abort, context2 could be zero'ed to delay
 125          * freeing associated memory till after ABTS completes.
 126          */
 127         if (pcmd) {
 128                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 129                                        list);
 130                 if (prsp) {
 131                         lp = (uint32_t *) prsp->virt;
 132                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 133                 }
 134         }
 135         else {
 136                 /* Force ulpStatus error since we are returning NULL ptr */
 137                 if (!(irsp->ulpStatus)) {
 138                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 139                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 140                 }
 141                 ptr = NULL;
 142         }
 143         return (ptr);
 144 }
 145
 146
 147 /*
 148  * Free resources / clean up outstanding I/Os
 149  * associated with a LPFC_NODELIST entry. This
 150  * routine effectively results in a "software abort".
 151  */
 152 int
 153 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 154         int send_abts)
 155 {
 156         struct lpfc_sli *psli;
 157         struct lpfc_sli_ring *pring;
 158         struct lpfc_iocbq *iocb, *next_iocb;
 159         IOCB_t *icmd;
 160         int    found = 0;
 161
 162         /* Abort outstanding I/O on NPort <nlp_DID> */
 163         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 164                         "%d:0201 Abort outstanding I/O on NPort x%x "
 165                         "Data: x%x x%x x%x\n",
 166                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 167                         ndlp->nlp_state, ndlp->nlp_rpi);
 168
 169         psli = &phba->sli;
 170         pring = &psli->ring[LPFC_ELS_RING];
 171
 172         /* First check the txq */
 173         do {
 174                 found = 0;
 175                 spin_lock_irq(phba->host->host_lock);
 176                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 177                         /* Check to see if iocb matches the nport we are looking
 178                            for */
 179                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 180                                 found = 1;
 181                                 /* It matches, so deque and call compl with an
 182                                    error */
 183                                 list_del(&iocb->list);
 184                                 pring->txq_cnt--;
 185                                 if (iocb->iocb_cmpl) {
 186                                         icmd = &iocb->iocb;
 187                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 188                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 189                                         spin_unlock_irq(phba->host->host_lock);
 190                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 191                                         spin_lock_irq(phba->host->host_lock);
 192                                 } else {
 193                                         list_add_tail(&iocb->list,
 194                                                         &phba->lpfc_iocb_list);
 195                                 }
 196                                 break;
 197                         }
 198                 }
 199                 spin_unlock_irq(phba->host->host_lock);
 200         } while (found);
 201
 202         /* Everything on txcmplq will be returned by firmware
 203          * with a no rpi / linkdown / abort error.  For ring 0,
 204          * ELS discovery, we want to get rid of it right here.
 205          */
 206         /* Next check the txcmplq */
 207         do {
 208                 found = 0;
 209                 spin_lock_irq(phba->host->host_lock);
 210                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 211                                          list) {
 212                         /* Check to see if iocb matches the nport we are looking
 213                            for */
 214                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 215                                 found = 1;
 216                                 /* It matches, so deque and call compl with an
 217                                    error */
 218                                 list_del(&iocb->list);
 219                                 pring->txcmplq_cnt--;
 220
 221                                 icmd = &iocb->iocb;
 222                                 /* If the driver is completing an ELS
 223                                  * command early, flush it out of the firmware.
 224                                  */
 225                                 if (send_abts &&
 226                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 227                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 228                                         lpfc_sli_issue_abort_iotag32(phba,
 229                                                              pring, iocb);
 230                                 }
 231                                 if (iocb->iocb_cmpl) {
 232                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 233                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 234                                         spin_unlock_irq(phba->host->host_lock);
 235                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 236                                         spin_lock_irq(phba->host->host_lock);
 237                                 } else {
 238                                         list_add_tail(&iocb->list,
 239                                                         &phba->lpfc_iocb_list);
 240                                 }
 241                                 break;
 242                         }
 243                 }
 244                 spin_unlock_irq(phba->host->host_lock);
 245         } while(found);
 246
 247         /* If we are delaying issuing an ELS command, cancel it */
 248         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
 249                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 250                 del_timer_sync(&ndlp->nlp_delayfunc);
 251                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 252                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 253         }
 254         return (0);
 255 }
 256
 257 static int
 258 lpfc_rcv_plogi(struct lpfc_hba * phba,
 259                       struct lpfc_nodelist * ndlp,
 260                       struct lpfc_iocbq *cmdiocb)
 261 {
 262         struct lpfc_dmabuf *pcmd;
 263         uint32_t *lp;
 264         IOCB_t *icmd;
 265         struct serv_parm *sp;
 266         LPFC_MBOXQ_t *mbox;
 267         struct ls_rjt stat;
 268         int rc;
 269
 270         memset(&stat, 0, sizeof (struct ls_rjt));
 271         if (phba->hba_state <= LPFC_FLOGI) {
 272                 /* Before responding to PLOGI, check for pt2pt mode.
 273                  * If we are pt2pt, with an outstanding FLOGI, abort
 274                  * the FLOGI and resend it first.
 275                  */
 276                 if (phba->fc_flag & FC_PT2PT) {
 277                         lpfc_els_abort_flogi(phba);
 278                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 279                                 /* If the other side is supposed to initiate
 280                                  * the PLOGI anyway, just ACC it now and
 281                                  * move on with discovery.
 282                                  */
 283                                 phba->fc_edtov = FF_DEF_EDTOV;
 284                                 phba->fc_ratov = FF_DEF_RATOV;
 285                                 /* Start discovery - this should just do
 286                                    CLEAR_LA */
 287                                 lpfc_disc_start(phba);
 288                         }
 289                         else {
 290                                 lpfc_initial_flogi(phba);
 291                         }
 292                 }
 293                 else {
 294                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 295                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 296                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 297                                             ndlp);
 298                         return 0;
 299                 }
 300         }
 301         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 302         lp = (uint32_t *) pcmd->virt;
 303         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 304         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 305                 /* Reject this request because invalid parameters */
 306                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 307                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 308                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 309                 return (0);
 310         }
 311         icmd = &cmdiocb->iocb;
 312
 313         /* PLOGI chkparm OK */
 314         lpfc_printf_log(phba,
 315                         KERN_INFO,
 316                         LOG_ELS,
 317                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 318                         phba->brd_no,
 319                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 320                         ndlp->nlp_rpi);
 321
 322         if ((phba->cfg_fcp_class == 2) &&
 323             (sp->cls2.classValid)) {
 324                 ndlp->nlp_fcp_info |= CLASS2;
 325         } else {
 326                 ndlp->nlp_fcp_info |= CLASS3;
 327         }
 328         ndlp->nlp_class_sup = 0;
 329         if (sp->cls1.classValid)
 330                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 331         if (sp->cls2.classValid)
 332                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 333         if (sp->cls3.classValid)
 334                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 335         if (sp->cls4.classValid)
 336                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 337         ndlp->nlp_maxframe =
 338                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 339
 340         /* no need to reg_login if we are already in one of these states */
 341         switch(ndlp->nlp_state) {
 342         case  NLP_STE_NPR_NODE:
 343                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 344                         break;
 345         case  NLP_STE_REG_LOGIN_ISSUE:
 346         case  NLP_STE_PRLI_ISSUE:
 347         case  NLP_STE_UNMAPPED_NODE:
 348         case  NLP_STE_MAPPED_NODE:
 349                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 350                 return (1);
 351         }
 352
 353         if ((phba->fc_flag & FC_PT2PT)
 354             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 355                 /* rcv'ed PLOGI decides what our NPortId will be */
 356                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 357                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 358                 if (mbox == NULL)
 359                         goto out;
 360                 lpfc_config_link(phba, mbox);
 361                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 362                 rc = lpfc_sli_issue_mbox
 363                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 364                 if (rc == MBX_NOT_FINISHED) {
 365                         mempool_free( mbox, phba->mbox_mem_pool);
 366                         goto out;
 367                 }
 368
 369                 lpfc_can_disctmo(phba);
 370         }
 371         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 372         if (mbox == NULL)
 373                 goto out;
 374
 375         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 376                            (uint8_t *) sp, mbox, 0)) {
 377                 mempool_free( mbox, phba->mbox_mem_pool);
 378                 goto out;
 379         }
 380
 381         /* ACC PLOGI rsp command needs to execute first,
 382          * queue this mbox command to be processed later.
 383          */
 384         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 385         mbox->context2  = ndlp;
 386         ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
 387
 388         /* If there is an outstanding PLOGI issued, abort it before
 389          * sending ACC rsp to PLOGI recieved.
 390          */
 391         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 392                 /* software abort outstanding PLOGI */
 393                 lpfc_els_abort(phba, ndlp, 1);
 394         }
 395         ndlp->nlp_flag |= NLP_RCV_PLOGI;
 396         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 397         return (1);
 398
 399 out:
 400         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 401         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 402         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 403         return (0);
 404 }
 405
 406 static int
 407 lpfc_rcv_padisc(struct lpfc_hba * phba,
 408                 struct lpfc_nodelist * ndlp,
 409                 struct lpfc_iocbq *cmdiocb)
 410 {
 411         struct lpfc_dmabuf *pcmd;
 412         struct serv_parm *sp;
 413         struct lpfc_name *pnn, *ppn;
 414         struct ls_rjt stat;
 415         ADISC *ap;
 416         IOCB_t *icmd;
 417         uint32_t *lp;
 418         uint32_t cmd;
 419
 420         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 421         lp = (uint32_t *) pcmd->virt;
 422
 423         cmd = *lp++;
 424         if (cmd == ELS_CMD_ADISC) {
 425                 ap = (ADISC *) lp;
 426                 pnn = (struct lpfc_name *) & ap->nodeName;
 427                 ppn = (struct lpfc_name *) & ap->portName;
 428         } else {
 429                 sp = (struct serv_parm *) lp;
 430                 pnn = (struct lpfc_name *) & sp->nodeName;
 431                 ppn = (struct lpfc_name *) & sp->portName;
 432         }
 433
 434         icmd = &cmdiocb->iocb;
 435         if ((icmd->ulpStatus == 0) &&
 436             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 437                 if (cmd == ELS_CMD_ADISC) {
 438                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 439                 }
 440                 else {
 441                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 442                                 NULL, 0);
 443                 }
 444                 return (1);
 445         }
 446         /* Reject this request because invalid parameters */
 447         stat.un.b.lsRjtRsvd0 = 0;
 448         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 449         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 450         stat.un.b.vendorUnique = 0;
 451         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 452
 453         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 454         /* 1 sec timeout */
 455         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 456
 457         spin_lock_irq(phba->host->host_lock);
 458         ndlp->nlp_flag |= NLP_DELAY_TMO;
 459         spin_unlock_irq(phba->host->host_lock);
 460         ndlp->nlp_state = NLP_STE_NPR_NODE;
 461         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 462         return (0);
 463 }
 464
 465 static int
 466 lpfc_rcv_logo(struct lpfc_hba * phba,
 467                       struct lpfc_nodelist * ndlp,
 468                       struct lpfc_iocbq *cmdiocb)
 469 {
 470         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 471         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 472          * PLOGIs during LOGO storms from a device.
 473          */
 474         ndlp->nlp_flag |= NLP_LOGO_ACC;
 475         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 476
 477         if (!(ndlp->nlp_type & NLP_FABRIC)) {
 478                 /* Only try to re-login if this is NOT a Fabric Node */
 479                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 480                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 481                 spin_lock_irq(phba->host->host_lock);
 482                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 483                 spin_unlock_irq(phba->host->host_lock);
 484         }
 485
 486         ndlp->nlp_state = NLP_STE_NPR_NODE;
 487         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 488
 489         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 490         /* The driver has to wait until the ACC completes before it continues
 491          * processing the LOGO.  The action will resume in
 492          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 493          * unreg_login, the driver waits so the ACC does not get aborted.
 494          */
 495         return (0);
 496 }
 497
 498 static void
 499 lpfc_rcv_prli(struct lpfc_hba * phba,
 500                       struct lpfc_nodelist * ndlp,
 501                       struct lpfc_iocbq *cmdiocb)
 502 {
 503         struct lpfc_dmabuf *pcmd;
 504         uint32_t *lp;
 505         PRLI *npr;
 506         struct fc_rport *rport = ndlp->rport;
 507         u32 roles;
 508
 509         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 510         lp = (uint32_t *) pcmd->virt;
 511         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 512
 513         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 514         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 515         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 516             (npr->prliType == PRLI_FCP_TYPE)) {
 517                 if (npr->initiatorFunc)
 518                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 519                 if (npr->targetFunc)
 520                         ndlp->nlp_type |= NLP_FCP_TARGET;
 521                 if (npr->Retry)
 522                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 523         }
 524         if (rport) {
 525                 /* We need to update the rport role values */
 526                 roles = FC_RPORT_ROLE_UNKNOWN;
 527                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 528                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 529                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 530                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 531                 fc_remote_port_rolechg(rport, roles);
 532         }
 533 }
 534
 535 static uint32_t
 536 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 537                       struct lpfc_nodelist * ndlp)
 538 {
 539         /* Check config parameter use-adisc or FCP-2 */
 540         if ((phba->cfg_use_adisc == 0) &&
 541                 !(phba->fc_flag & FC_RSCN_MODE)) {
 542                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 543                         return (0);
 544         }
 545         spin_lock_irq(phba->host->host_lock);
 546         ndlp->nlp_flag |= NLP_NPR_ADISC;
 547         spin_unlock_irq(phba->host->host_lock);
 548         return (1);
 549 }
 550
 551 static uint32_t
 552 lpfc_disc_noop(struct lpfc_hba * phba,
 553                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 554 {
 555         /* This routine does nothing, just return the current state */
 556         return (ndlp->nlp_state);
 557 }
 558
 559 static uint32_t
 560 lpfc_disc_illegal(struct lpfc_hba * phba,
 561                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 562 {
 563         lpfc_printf_log(phba,
 564                         KERN_ERR,
 565                         LOG_DISCOVERY,
 566                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 567                         "state x%x Data: x%x x%x\n",
 568                         phba->brd_no,
 569                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 570                         ndlp->nlp_flag);
 571         return (ndlp->nlp_state);
 572 }
 573
 574 /* Start of Discovery State Machine routines */
 575
 576 static uint32_t
 577 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 578                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 579 {
 580         struct lpfc_iocbq *cmdiocb;
 581
 582         cmdiocb = (struct lpfc_iocbq *) arg;
 583
 584         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 585                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 586                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 587                 return (ndlp->nlp_state);
 588         }
 589         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 590         return (NLP_STE_FREED_NODE);
 591 }
 592
 593 static uint32_t
 594 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 595                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 596 {
 597         lpfc_issue_els_logo(phba, ndlp, 0);
 598         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 599         return (ndlp->nlp_state);
 600 }
 601
 602 static uint32_t
 603 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 604                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 605 {
 606         struct lpfc_iocbq     *cmdiocb;
 607
 608         cmdiocb = (struct lpfc_iocbq *) arg;
 609
 610         spin_lock_irq(phba->host->host_lock);
 611         ndlp->nlp_flag |= NLP_LOGO_ACC;
 612         spin_unlock_irq(phba->host->host_lock);
 613         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 614         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 615
 616         return (ndlp->nlp_state);
 617 }
 618
 619 static uint32_t
 620 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 621                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 622 {
 623         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 624         return (NLP_STE_FREED_NODE);
 625 }
 626
 627 static uint32_t
 628 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 629                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 630 {
 631         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 632         return (NLP_STE_FREED_NODE);
 633 }
 634
 635 static uint32_t
 636 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 637                            void *arg, uint32_t evt)
 638 {
 639         struct lpfc_iocbq *cmdiocb = arg;
 640         struct lpfc_dmabuf *pcmd;
 641         struct serv_parm *sp;
 642         uint32_t *lp;
 643         struct ls_rjt stat;
 644         int port_cmp;
 645
 646         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 647         lp = (uint32_t *) pcmd->virt;
 648         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 649
 650         memset(&stat, 0, sizeof (struct ls_rjt));
 651
 652         /* For a PLOGI, we only accept if our portname is less
 653          * than the remote portname.
 654          */
 655         phba->fc_stat.elsLogiCol++;
 656         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 657                           sizeof (struct lpfc_name));
 658
 659         if (port_cmp >= 0) {
 660                 /* Reject this request because the remote node will accept
 661                    ours */
 662                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 663                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 664                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 665         }
 666         else {
 667                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 668         } /* if our portname was less */
 669
 670         return (ndlp->nlp_state);
 671 }
 672
 673 static uint32_t
 674 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 675                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 676 {
 677         struct lpfc_iocbq     *cmdiocb;
 678
 679         cmdiocb = (struct lpfc_iocbq *) arg;
 680
 681         /* software abort outstanding PLOGI */
 682         lpfc_els_abort(phba, ndlp, 1);
 683         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
 688         if (evt == NLP_EVT_RCV_LOGO) {
 689                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 690         }
 691         else {
 692                 lpfc_issue_els_logo(phba, ndlp, 0);
 693         }
 694
 695         /* Put ndlp in npr list set plogi timer for 1 sec */
 696         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 697         ndlp->nlp_state = NLP_STE_NPR_NODE;
 698         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 699
 700         return (ndlp->nlp_state);
 701 }
 702
 703 static uint32_t
 704 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 705                             struct lpfc_nodelist * ndlp, void *arg,
 706                             uint32_t evt)
 707 {
 708         struct lpfc_iocbq *cmdiocb, *rspiocb;
 709         struct lpfc_dmabuf *pcmd, *prsp;
 710         uint32_t *lp;
 711         IOCB_t *irsp;
 712         struct serv_parm *sp;
 713         LPFC_MBOXQ_t *mbox;
 714
 715         cmdiocb = (struct lpfc_iocbq *) arg;
 716         rspiocb = cmdiocb->context_un.rsp_iocb;
 717
 718         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 719                 return (ndlp->nlp_state);
 720         }
 721
 722         irsp = &rspiocb->iocb;
 723
 724         if (irsp->ulpStatus)
 725                 goto out;
 726
 727         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 728
 729         prsp = list_get_first(&pcmd->list,
 730                               struct lpfc_dmabuf,
 731                               list);
 732         lp = (uint32_t *) prsp->virt;
 733
 734         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 735         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 736                 goto out;
 737
 738         /* PLOGI chkparm OK */
 739         lpfc_printf_log(phba,
 740                         KERN_INFO,
 741                         LOG_ELS,
 742                         "%d:0121 PLOGI chkparm OK "
 743                         "Data: x%x x%x x%x x%x\n",
 744                         phba->brd_no,
 745                         ndlp->nlp_DID, ndlp->nlp_state,
 746                         ndlp->nlp_flag, ndlp->nlp_rpi);
 747
 748         if ((phba->cfg_fcp_class == 2) &&
 749             (sp->cls2.classValid)) {
 750                 ndlp->nlp_fcp_info |= CLASS2;
 751         } else {
 752                 ndlp->nlp_fcp_info |= CLASS3;
 753         }
 754         ndlp->nlp_class_sup = 0;
 755         if (sp->cls1.classValid)
 756                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 757         if (sp->cls2.classValid)
 758                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 759         if (sp->cls3.classValid)
 760                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 761         if (sp->cls4.classValid)
 762                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 763         ndlp->nlp_maxframe =
 764                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 765                 sp->cmn.bbRcvSizeLsb;
 766
 767         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 768                                    GFP_KERNEL)))
 769                 goto out;
 770
 771         lpfc_unreg_rpi(phba, ndlp);
 772         if (lpfc_reg_login
 773             (phba, irsp->un.elsreq64.remoteID,
 774              (uint8_t *) sp, mbox, 0) == 0) {
 775                 /* set_slim mailbox command needs to
 776                  * execute first, queue this command to
 777                  * be processed later.
 778                  */
 779                 switch(ndlp->nlp_DID) {
 780                 case NameServer_DID:
 781                         mbox->mbox_cmpl =
 782                                 lpfc_mbx_cmpl_ns_reg_login;
 783                         break;
 784                 case FDMI_DID:
 785                         mbox->mbox_cmpl =
 786                                 lpfc_mbx_cmpl_fdmi_reg_login;
 787                         break;
 788                 default:
 789                         mbox->mbox_cmpl =
 790                                 lpfc_mbx_cmpl_reg_login;
 791                 }
 792                 mbox->context2 = ndlp;
 793                 if (lpfc_sli_issue_mbox(phba, mbox,
 794                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 795                     != MBX_NOT_FINISHED) {
 796                         ndlp->nlp_state =
 797                                 NLP_STE_REG_LOGIN_ISSUE;
 798                         lpfc_nlp_list(phba, ndlp,
 799                                       NLP_REGLOGIN_LIST);
 800                         return (ndlp->nlp_state);
 801                 }
 802                 mempool_free(mbox, phba->mbox_mem_pool);
 803         } else {
 804                 mempool_free(mbox, phba->mbox_mem_pool);
 805         }
 806
 807
 808  out:
 809         /* Free this node since the driver cannot login or has the wrong
 810            sparm */
 811         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 812         return (NLP_STE_FREED_NODE);
 813 }
 814
 815 static uint32_t
 816 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 817                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 818 {
 819         /* software abort outstanding PLOGI */
 820         lpfc_els_abort(phba, ndlp, 1);
 821
 822         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 823         return (NLP_STE_FREED_NODE);
 824 }
 825
 826 static uint32_t
 827 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 828                             struct lpfc_nodelist * ndlp, void *arg,
 829                             uint32_t evt)
 830 {
 831         /* software abort outstanding PLOGI */
 832         lpfc_els_abort(phba, ndlp, 1);
 833
 834         ndlp->nlp_state = NLP_STE_NPR_NODE;
 835         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 836         spin_lock_irq(phba->host->host_lock);
 837         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 838         spin_unlock_irq(phba->host->host_lock);
 839
 840         return (ndlp->nlp_state);
 841 }
 842
 843 static uint32_t
 844 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 845                             struct lpfc_nodelist * ndlp, void *arg,
 846                             uint32_t evt)
 847 {
 848         struct lpfc_iocbq *cmdiocb;
 849
 850         /* software abort outstanding ADISC */
 851         lpfc_els_abort(phba, ndlp, 1);
 852
 853         cmdiocb = (struct lpfc_iocbq *) arg;
 854
 855         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 856                 return (ndlp->nlp_state);
 857         }
 858         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 859         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 860         lpfc_issue_els_plogi(phba, ndlp, 0);
 861
 862         return (ndlp->nlp_state);
 863 }
 864
 865 static uint32_t
 866 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 867                             struct lpfc_nodelist * ndlp, void *arg,
 868                             uint32_t evt)
 869 {
 870         struct lpfc_iocbq *cmdiocb;
 871
 872         cmdiocb = (struct lpfc_iocbq *) arg;
 873
 874         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 875         return (ndlp->nlp_state);
 876 }
 877
 878 static uint32_t
 879 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 880                             struct lpfc_nodelist * ndlp, void *arg,
 881                             uint32_t evt)
 882 {
 883         struct lpfc_iocbq *cmdiocb;
 884
 885         cmdiocb = (struct lpfc_iocbq *) arg;
 886
 887         /* software abort outstanding ADISC */
 888         lpfc_els_abort(phba, ndlp, 0);
 889
 890         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 891         return (ndlp->nlp_state);
 892 }
 893
 894 static uint32_t
 895 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 896                             struct lpfc_nodelist * ndlp, void *arg,
 897                             uint32_t evt)
 898 {
 899         struct lpfc_iocbq *cmdiocb;
 900
 901         cmdiocb = (struct lpfc_iocbq *) arg;
 902
 903         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 904         return (ndlp->nlp_state);
 905 }
 906
 907 static uint32_t
 908 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 909                             struct lpfc_nodelist * ndlp, void *arg,
 910                             uint32_t evt)
 911 {
 912         struct lpfc_iocbq *cmdiocb;
 913
 914         cmdiocb = (struct lpfc_iocbq *) arg;
 915
 916         /* Treat like rcv logo */
 917         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 918         return (ndlp->nlp_state);
 919 }
 920
 921 static uint32_t
 922 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 923                             struct lpfc_nodelist * ndlp, void *arg,
 924                             uint32_t evt)
 925 {
 926         struct lpfc_iocbq *cmdiocb, *rspiocb;
 927         IOCB_t *irsp;
 928         ADISC *ap;
 929
 930         cmdiocb = (struct lpfc_iocbq *) arg;
 931         rspiocb = cmdiocb->context_un.rsp_iocb;
 932
 933         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 934         irsp = &rspiocb->iocb;
 935
 936         if ((irsp->ulpStatus) ||
 937                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 938                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 939                 /* 1 sec timeout */
 940                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 941                 spin_lock_irq(phba->host->host_lock);
 942                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 943                 spin_unlock_irq(phba->host->host_lock);
 944
 945                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 946                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 947
 948                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 949                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 950                 lpfc_unreg_rpi(phba, ndlp);
 951                 return (ndlp->nlp_state);
 952         }
 953         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 954         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 955         return (ndlp->nlp_state);
 956 }
 957
 958 static uint32_t
 959 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 960                             struct lpfc_nodelist * ndlp, void *arg,
 961                             uint32_t evt)
 962 {
 963         /* software abort outstanding ADISC */
 964         lpfc_els_abort(phba, ndlp, 1);
 965
 966         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 967         return (NLP_STE_FREED_NODE);
 968 }
 969
 970 static uint32_t
 971 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
 972                             struct lpfc_nodelist * ndlp, void *arg,
 973                             uint32_t evt)
 974 {
 975         /* software abort outstanding ADISC */
 976         lpfc_els_abort(phba, ndlp, 1);
 977
 978         ndlp->nlp_state = NLP_STE_NPR_NODE;
 979         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 980         spin_lock_irq(phba->host->host_lock);
 981         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 982         spin_unlock_irq(phba->host->host_lock);
 983
 984         lpfc_disc_set_adisc(phba, ndlp);
 985         return (ndlp->nlp_state);
 986 }
 987
 988 static uint32_t
 989 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
 990                               struct lpfc_nodelist * ndlp, void *arg,
 991                               uint32_t evt)
 992 {
 993         struct lpfc_iocbq *cmdiocb;
 994
 995         cmdiocb = (struct lpfc_iocbq *) arg;
 996
 997         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 998         return (ndlp->nlp_state);
 999 }
1000
1001 static uint32_t
1002 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1003                              struct lpfc_nodelist * ndlp, void *arg,
1004                              uint32_t evt)
1005 {
1006         struct lpfc_iocbq *cmdiocb;
1007
1008         cmdiocb = (struct lpfc_iocbq *) arg;
1009
1010         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1011         return (ndlp->nlp_state);
1012 }
1013
1014 static uint32_t
1015 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1016                              struct lpfc_nodelist * ndlp, void *arg,
1017                              uint32_t evt)
1018 {
1019         struct lpfc_iocbq *cmdiocb;
1020
1021         cmdiocb = (struct lpfc_iocbq *) arg;
1022
1023         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1024         return (ndlp->nlp_state);
1025 }
1026
1027 static uint32_t
1028 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1029                                struct lpfc_nodelist * ndlp, void *arg,
1030                                uint32_t evt)
1031 {
1032         struct lpfc_iocbq *cmdiocb;
1033
1034         cmdiocb = (struct lpfc_iocbq *) arg;
1035
1036         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1037         return (ndlp->nlp_state);
1038 }
1039
1040 static uint32_t
1041 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1042                              struct lpfc_nodelist * ndlp, void *arg,
1043                              uint32_t evt)
1044 {
1045         struct lpfc_iocbq *cmdiocb;
1046
1047         cmdiocb = (struct lpfc_iocbq *) arg;
1048         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1049         return (ndlp->nlp_state);
1050 }
1051
1052 static uint32_t
1053 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1054                                   struct lpfc_nodelist * ndlp,
1055                                   void *arg, uint32_t evt)
1056 {
1057         LPFC_MBOXQ_t *pmb;
1058         MAILBOX_t *mb;
1059         uint32_t did;
1060
1061         pmb = (LPFC_MBOXQ_t *) arg;
1062         mb = &pmb->mb;
1063         did = mb->un.varWords[1];
1064         if (mb->mbxStatus) {
1065                 /* RegLogin failed */
1066                 lpfc_printf_log(phba,
1067                                 KERN_ERR,
1068                                 LOG_DISCOVERY,
1069                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1070                                 phba->brd_no,
1071                                 did, mb->mbxStatus, phba->hba_state);
1072
1073                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1074                 spin_lock_irq(phba->host->host_lock);
1075                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1076                 spin_unlock_irq(phba->host->host_lock);
1077
1078                 lpfc_issue_els_logo(phba, ndlp, 0);
1079                 /* Put ndlp in npr list set plogi timer for 1 sec */
1080                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1081                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1082                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1083                 return (ndlp->nlp_state);
1084         }
1085
1086         if (ndlp->nlp_rpi != 0)
1087                 lpfc_findnode_remove_rpi(phba, ndlp->nlp_rpi);
1088
1089         ndlp->nlp_rpi = mb->un.varWords[0];
1090         lpfc_addnode_rpi(phba, ndlp, ndlp->nlp_rpi);
1091
1092         /* Only if we are not a fabric nport do we issue PRLI */
1093         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1094                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1095                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1096                 lpfc_issue_els_prli(phba, ndlp, 0);
1097         } else {
1098                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1099                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1100         }
1101         return (ndlp->nlp_state);
1102 }
1103
1104 static uint32_t
1105 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1106                               struct lpfc_nodelist * ndlp, void *arg,
1107                               uint32_t evt)
1108 {
1109         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1110         return (NLP_STE_FREED_NODE);
1111 }
1112
1113 static uint32_t
1114 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1115                                struct lpfc_nodelist * ndlp, void *arg,
1116                                uint32_t evt)
1117 {
1118         ndlp->nlp_state = NLP_STE_NPR_NODE;
1119         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1120         spin_lock_irq(phba->host->host_lock);
1121         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1122         spin_unlock_irq(phba->host->host_lock);
1123         return (ndlp->nlp_state);
1124 }
1125
1126 static uint32_t
1127 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1128                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1129 {
1130         struct lpfc_iocbq *cmdiocb;
1131
1132         cmdiocb = (struct lpfc_iocbq *) arg;
1133
1134         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1135         return (ndlp->nlp_state);
1136 }
1137
1138 static uint32_t
1139 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1140                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1141 {
1142         struct lpfc_iocbq *cmdiocb;
1143
1144         cmdiocb = (struct lpfc_iocbq *) arg;
1145
1146         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1147         return (ndlp->nlp_state);
1148 }
1149
1150 static uint32_t
1151 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1152                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1153 {
1154         struct lpfc_iocbq *cmdiocb;
1155
1156         cmdiocb = (struct lpfc_iocbq *) arg;
1157
1158         /* Software abort outstanding PRLI before sending acc */
1159         lpfc_els_abort(phba, ndlp, 1);
1160
1161         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1162         return (ndlp->nlp_state);
1163 }
1164
1165 static uint32_t
1166 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1167                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1168 {
1169         struct lpfc_iocbq *cmdiocb;
1170
1171         cmdiocb = (struct lpfc_iocbq *) arg;
1172
1173         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1174         return (ndlp->nlp_state);
1175 }
1176
1177 /* This routine is envoked when we rcv a PRLO request from a nport
1178  * we are logged into.  We should send back a PRLO rsp setting the
1179  * appropriate bits.
1180  * NEXT STATE = PRLI_ISSUE
1181  */
1182 static uint32_t
1183 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1184                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1185 {
1186         struct lpfc_iocbq *cmdiocb;
1187
1188         cmdiocb = (struct lpfc_iocbq *) arg;
1189         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1190         return (ndlp->nlp_state);
1191 }
1192
1193 static uint32_t
1194 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1195                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1196 {
1197         struct lpfc_iocbq *cmdiocb, *rspiocb;
1198         IOCB_t *irsp;
1199         PRLI *npr;
1200
1201         cmdiocb = (struct lpfc_iocbq *) arg;
1202         rspiocb = cmdiocb->context_un.rsp_iocb;
1203         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1204
1205         irsp = &rspiocb->iocb;
1206         if (irsp->ulpStatus) {
1207                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1208                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1209                 return (ndlp->nlp_state);
1210         }
1211
1212         /* Check out PRLI rsp */
1213         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1214         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1215         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1216             (npr->prliType == PRLI_FCP_TYPE)) {
1217                 if (npr->initiatorFunc)
1218                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1219                 if (npr->targetFunc)
1220                         ndlp->nlp_type |= NLP_FCP_TARGET;
1221                 if (npr->Retry)
1222                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1223         }
1224
1225         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1226         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1227         return (ndlp->nlp_state);
1228 }
1229
1230 /*! lpfc_device_rm_prli_issue
1231   *
1232   * \pre
1233   * \post
1234   * \param   phba
1235   * \param   ndlp
1236   * \param   arg
1237   * \param   evt
1238   * \return  uint32_t
1239   *
1240   * \b Description:
1241   *    This routine is envoked when we a request to remove a nport we are in the
1242   *    process of PRLIing. We should software abort outstanding prli, unreg
1243   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1244   *    on plogi list so it can be freed when LOGO completes.
1245   *
1246   */
1247 static uint32_t
1248 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1249                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1250 {
1251         /* software abort outstanding PRLI */
1252         lpfc_els_abort(phba, ndlp, 1);
1253
1254         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1255         return (NLP_STE_FREED_NODE);
1256 }
1257
1258
1259 /*! lpfc_device_recov_prli_issue
1260   *
1261   * \pre
1262   * \post
1263   * \param   phba
1264   * \param   ndlp
1265   * \param   arg
1266   * \param   evt
1267   * \return  uint32_t
1268   *
1269   * \b Description:
1270   *    The routine is envoked when the state of a device is unknown, like
1271   *    during a link down. We should remove the nodelist entry from the
1272   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1273   *    outstanding PRLI command, then free the node entry.
1274   */
1275 static uint32_t
1276 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1277                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1278 {
1279         /* software abort outstanding PRLI */
1280         lpfc_els_abort(phba, ndlp, 1);
1281
1282         ndlp->nlp_state = NLP_STE_NPR_NODE;
1283         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1284         spin_lock_irq(phba->host->host_lock);
1285         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1286         spin_unlock_irq(phba->host->host_lock);
1287         return (ndlp->nlp_state);
1288 }
1289
1290 static uint32_t
1291 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1292                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1293 {
1294         struct lpfc_iocbq *cmdiocb;
1295
1296         cmdiocb = (struct lpfc_iocbq *) arg;
1297
1298         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1299         return (ndlp->nlp_state);
1300 }
1301
1302 static uint32_t
1303 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1304                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1305 {
1306         struct lpfc_iocbq *cmdiocb;
1307
1308         cmdiocb = (struct lpfc_iocbq *) arg;
1309
1310         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1311         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1312         return (ndlp->nlp_state);
1313 }
1314
1315 static uint32_t
1316 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1317                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1318 {
1319         struct lpfc_iocbq *cmdiocb;
1320
1321         cmdiocb = (struct lpfc_iocbq *) arg;
1322
1323         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1324         return (ndlp->nlp_state);
1325 }
1326
1327 static uint32_t
1328 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1329                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1330 {
1331         struct lpfc_iocbq *cmdiocb;
1332
1333         cmdiocb = (struct lpfc_iocbq *) arg;
1334
1335         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1336         return (ndlp->nlp_state);
1337 }
1338
1339 static uint32_t
1340 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1341                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1342 {
1343         struct lpfc_iocbq *cmdiocb;
1344
1345         cmdiocb = (struct lpfc_iocbq *) arg;
1346
1347         /* Treat like rcv logo */
1348         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1349         return (ndlp->nlp_state);
1350 }
1351
1352 static uint32_t
1353 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1354                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1355 {
1356         ndlp->nlp_state = NLP_STE_NPR_NODE;
1357         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1358         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1359         lpfc_disc_set_adisc(phba, ndlp);
1360
1361         return (ndlp->nlp_state);
1362 }
1363
1364 static uint32_t
1365 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1366                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1367 {
1368         struct lpfc_iocbq *cmdiocb;
1369
1370         cmdiocb = (struct lpfc_iocbq *) arg;
1371
1372         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1373         return (ndlp->nlp_state);
1374 }
1375
1376 static uint32_t
1377 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1378                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1379 {
1380         struct lpfc_iocbq *cmdiocb;
1381
1382         cmdiocb = (struct lpfc_iocbq *) arg;
1383
1384         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1385         return (ndlp->nlp_state);
1386 }
1387
1388 static uint32_t
1389 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1390                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1391 {
1392         struct lpfc_iocbq *cmdiocb;
1393
1394         cmdiocb = (struct lpfc_iocbq *) arg;
1395
1396         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1397         return (ndlp->nlp_state);
1398 }
1399
1400 static uint32_t
1401 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1402                             struct lpfc_nodelist * ndlp, void *arg,
1403                             uint32_t evt)
1404 {
1405         struct lpfc_iocbq *cmdiocb;
1406
1407         cmdiocb = (struct lpfc_iocbq *) arg;
1408
1409         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1410         return (ndlp->nlp_state);
1411 }
1412
1413 static uint32_t
1414 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1415                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1416 {
1417         struct lpfc_iocbq *cmdiocb;
1418
1419         cmdiocb = (struct lpfc_iocbq *) arg;
1420
1421         /* flush the target */
1422         spin_lock_irq(phba->host->host_lock);
1423         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1424                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1425         spin_unlock_irq(phba->host->host_lock);
1426
1427         /* Treat like rcv logo */
1428         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1429         return (ndlp->nlp_state);
1430 }
1431
1432 static uint32_t
1433 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1434                             struct lpfc_nodelist * ndlp, void *arg,
1435                             uint32_t evt)
1436 {
1437         ndlp->nlp_state = NLP_STE_NPR_NODE;
1438         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1439         spin_lock_irq(phba->host->host_lock);
1440         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1441         spin_unlock_irq(phba->host->host_lock);
1442         lpfc_disc_set_adisc(phba, ndlp);
1443         return (ndlp->nlp_state);
1444 }
1445
1446 static uint32_t
1447 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1448                             struct lpfc_nodelist * ndlp, void *arg,
1449                             uint32_t evt)
1450 {
1451         struct lpfc_iocbq *cmdiocb;
1452
1453         cmdiocb = (struct lpfc_iocbq *) arg;
1454
1455         /* Ignore PLOGI if we have an outstanding LOGO */
1456         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1457                 return (ndlp->nlp_state);
1458         }
1459
1460         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1461                 spin_lock_irq(phba->host->host_lock);
1462                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1463                 spin_unlock_irq(phba->host->host_lock);
1464                 return (ndlp->nlp_state);
1465         }
1466
1467         /* send PLOGI immediately, move to PLOGI issue state */
1468         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1469                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1470                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1471                         lpfc_issue_els_plogi(phba, ndlp, 0);
1472         }
1473         return (ndlp->nlp_state);
1474 }
1475
1476 static uint32_t
1477 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1478                             struct lpfc_nodelist * ndlp, void *arg,
1479                             uint32_t evt)
1480 {
1481         struct lpfc_iocbq     *cmdiocb;
1482         struct ls_rjt          stat;
1483
1484         cmdiocb = (struct lpfc_iocbq *) arg;
1485
1486         memset(&stat, 0, sizeof (struct ls_rjt));
1487         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1488         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1489         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1490
1491         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1492                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1493                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1494                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1495                         lpfc_issue_els_adisc(phba, ndlp, 0);
1496                 } else {
1497                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1498                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1499                         lpfc_issue_els_plogi(phba, ndlp, 0);
1500                 }
1501         }
1502         return (ndlp->nlp_state);
1503 }
1504
1505 static uint32_t
1506 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1507                             struct lpfc_nodelist * ndlp, void *arg,
1508                             uint32_t evt)
1509 {
1510         struct lpfc_iocbq     *cmdiocb;
1511
1512         cmdiocb = (struct lpfc_iocbq *) arg;
1513
1514         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1515         return (ndlp->nlp_state);
1516 }
1517
1518 static uint32_t
1519 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1520                             struct lpfc_nodelist * ndlp, void *arg,
1521                             uint32_t evt)
1522 {
1523         struct lpfc_iocbq     *cmdiocb;
1524
1525         cmdiocb = (struct lpfc_iocbq *) arg;
1526
1527         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1528
1529         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1530                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1531                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1532                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1533                         lpfc_issue_els_adisc(phba, ndlp, 0);
1534                 } else {
1535                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1536                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1537                         lpfc_issue_els_plogi(phba, ndlp, 0);
1538                 }
1539         }
1540         return (ndlp->nlp_state);
1541 }
1542
1543 static uint32_t
1544 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1545                             struct lpfc_nodelist * ndlp, void *arg,
1546                             uint32_t evt)
1547 {
1548         struct lpfc_iocbq     *cmdiocb;
1549
1550         cmdiocb = (struct lpfc_iocbq *) arg;
1551
1552         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1553
1554         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1555                 if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
1556                         return (ndlp->nlp_state);
1557                 } else {
1558                         spin_lock_irq(phba->host->host_lock);
1559                         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1560                         spin_unlock_irq(phba->host->host_lock);
1561                         del_timer_sync(&ndlp->nlp_delayfunc);
1562                         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1563                                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1564                 }
1565         }
1566
1567         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1568         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1569         lpfc_issue_els_plogi(phba, ndlp, 0);
1570         return (ndlp->nlp_state);
1571 }
1572
1573 static uint32_t
1574 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1575                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1576 {
1577         lpfc_unreg_rpi(phba, ndlp);
1578         /* This routine does nothing, just return the current state */
1579         return (ndlp->nlp_state);
1580 }
1581
1582 static uint32_t
1583 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1584                             struct lpfc_nodelist * ndlp, void *arg,
1585                             uint32_t evt)
1586 {
1587         LPFC_MBOXQ_t *pmb;
1588         MAILBOX_t *mb;
1589
1590         pmb = (LPFC_MBOXQ_t *) arg;
1591         mb = &pmb->mb;
1592
1593         /* save rpi */
1594         if (ndlp->nlp_rpi != 0)
1595                 lpfc_findnode_remove_rpi(phba, ndlp->nlp_rpi);
1596
1597         ndlp->nlp_rpi = mb->un.varWords[0];
1598         lpfc_addnode_rpi(phba, ndlp, ndlp->nlp_rpi);
1599
1600         return (ndlp->nlp_state);
1601 }
1602
1603 static uint32_t
1604 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1605                             struct lpfc_nodelist * ndlp, void *arg,
1606                             uint32_t evt)
1607 {
1608         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1609         return (NLP_STE_FREED_NODE);
1610 }
1611
1612 static uint32_t
1613 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1614                             struct lpfc_nodelist * ndlp, void *arg,
1615                             uint32_t evt)
1616 {
1617         spin_lock_irq(phba->host->host_lock);
1618         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1619         spin_unlock_irq(phba->host->host_lock);
1620         return (ndlp->nlp_state);
1621 }
1622
1623
1624 /* This next section defines the NPort Discovery State Machine */
1625
1626 /* There are 4 different double linked lists nodelist entries can reside on.
1627  * The plogi list and adisc list are used when Link Up discovery or RSCN
1628  * processing is needed. Each list holds the nodes that we will send PLOGI
1629  * or ADISC on. These lists will keep track of what nodes will be effected
1630  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1631  * The unmapped_list will contain all nodes that we have successfully logged
1632  * into at the Fibre Channel level. The mapped_list will contain all nodes
1633  * that are mapped FCP targets.
1634  */
1635 /*
1636  * The bind list is a list of undiscovered (potentially non-existent) nodes
1637  * that we have saved binding information on. This information is used when
1638  * nodes transition from the unmapped to the mapped list.
1639  */
1640 /* For UNUSED_NODE state, the node has just been allocated .
1641  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1642  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1643  * and put on the unmapped list. For ADISC processing, the node is taken off
1644  * the ADISC list and placed on either the mapped or unmapped list (depending
1645  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1646  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1647  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1648  * node, the node is taken off the unmapped list. The binding list is checked
1649  * for a valid binding, or a binding is automatically assigned. If binding
1650  * assignment is unsuccessful, the node is left on the unmapped list. If
1651  * binding assignment is successful, the associated binding list entry (if
1652  * any) is removed, and the node is placed on the mapped list.
1653  */
1654 /*
1655  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1656  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1657  * expire, all effected nodes will receive a DEVICE_RM event.
1658  */
1659 /*
1660  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1661  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1662  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1663  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1664  * we will first process the ADISC list.  32 entries are processed initially and
1665  * ADISC is initited for each one.  Completions / Events for each node are
1666  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1667  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1668  * waiting, and the ADISC list count is identically 0, then we are done. For
1669  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1670  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1671  * list.  32 entries are processed initially and PLOGI is initited for each one.
1672  * Completions / Events for each node are funnelled thru the state machine.  As
1673  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1674  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1675  * indentically 0, then we are done. We have now completed discovery / RSCN
1676  * handling. Upon completion, ALL nodes should be on either the mapped or
1677  * unmapped lists.
1678  */
1679
1680 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1681      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1682         /* Action routine                  Event       Current State  */
1683         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1684         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1685         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1686         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1687         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1688         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1689         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1690         lpfc_disc_illegal,              /* CMPL_PRLI       */
1691         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1692         lpfc_disc_illegal,              /* CMPL_ADISC      */
1693         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1694         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1695         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1696
1697         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1698         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1699         lpfc_rcv_els_plogi_issue,       /* RCV_LOGO        */
1700         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1701         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1702         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1703         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1704         lpfc_disc_illegal,              /* CMPL_PRLI       */
1705         lpfc_disc_illegal,              /* CMPL_LOGO       */
1706         lpfc_disc_illegal,              /* CMPL_ADISC      */
1707         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1708         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1709         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1710
1711         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1712         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1713         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1714         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1715         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1716         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1717         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1718         lpfc_disc_illegal,              /* CMPL_PRLI       */
1719         lpfc_disc_illegal,              /* CMPL_LOGO       */
1720         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1721         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1722         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1723         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1724
1725         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1726         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1727         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1728         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1729         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1730         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1731         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1732         lpfc_disc_illegal,              /* CMPL_PRLI       */
1733         lpfc_disc_illegal,              /* CMPL_LOGO       */
1734         lpfc_disc_illegal,              /* CMPL_ADISC      */
1735         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1736         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1737         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1738
1739         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1740         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1741         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1742         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1743         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1744         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1745         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1746         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1747         lpfc_disc_illegal,              /* CMPL_LOGO       */
1748         lpfc_disc_illegal,              /* CMPL_ADISC      */
1749         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1750         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1751         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1752
1753         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1754         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1755         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1756         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1757         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1758         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1759         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1760         lpfc_disc_illegal,              /* CMPL_PRLI       */
1761         lpfc_disc_illegal,              /* CMPL_LOGO       */
1762         lpfc_disc_illegal,              /* CMPL_ADISC      */
1763         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1764         lpfc_disc_illegal,              /* DEVICE_RM       */
1765         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1766
1767         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1768         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1769         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1770         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1771         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1772         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1773         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1774         lpfc_disc_illegal,              /* CMPL_PRLI       */
1775         lpfc_disc_illegal,              /* CMPL_LOGO       */
1776         lpfc_disc_illegal,              /* CMPL_ADISC      */
1777         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1778         lpfc_disc_illegal,              /* DEVICE_RM       */
1779         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1780
1781         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1782         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1783         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1784         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1785         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1786         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1787         lpfc_disc_noop,                 /* CMPL_PLOGI      */
1788         lpfc_disc_noop,                 /* CMPL_PRLI       */
1789         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1790         lpfc_disc_noop,                 /* CMPL_ADISC      */
1791         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1792         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1793         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1794 };
1795
1796 int
1797 lpfc_disc_state_machine(struct lpfc_hba * phba,
1798                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1799 {
1800         uint32_t cur_state, rc;
1801         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1802                          uint32_t);
1803
1804         ndlp->nlp_disc_refcnt++;
1805         cur_state = ndlp->nlp_state;
1806
1807         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1808         lpfc_printf_log(phba,
1809                         KERN_INFO,
1810                         LOG_DISCOVERY,
1811                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1812                         "Data: x%x\n",
1813                         phba->brd_no,
1814                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1815
1816         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1817         rc = (func) (phba, ndlp, arg, evt);
1818
1819         /* DSM out state <rc> on NPort <nlp_DID> */
1820         lpfc_printf_log(phba,
1821                        KERN_INFO,
1822                        LOG_DISCOVERY,
1823                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1824                        phba->brd_no,
1825                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1826
1827         ndlp->nlp_disc_refcnt--;
1828
1829         /* Check to see if ndlp removal is deferred */
1830         if ((ndlp->nlp_disc_refcnt == 0)
1831             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1832                 spin_lock_irq(phba->host->host_lock);
1833                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1834                 spin_unlock_irq(phba->host->host_lock);
1835                 lpfc_nlp_remove(phba, ndlp);
1836                 return (NLP_STE_FREED_NODE);
1837         }
1838         if (rc == NLP_STE_FREED_NODE)
1839                 return (NLP_STE_FREED_NODE);
1840         ndlp->nlp_state = rc;
1841         return (rc);
1842 }