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 #include <linux/blkdev.h>
  22 #include <linux/pci.h>
  23 #include <linux/interrupt.h>
  24
  25 #include <scsi/scsi_device.h>
  26 #include <scsi/scsi_host.h>
  27 #include <scsi/scsi_transport_fc.h>
  28
  29 #include "lpfc_hw.h"
  30 #include "lpfc_sli.h"
  31 #include "lpfc_disc.h"
  32 #include "lpfc_scsi.h"
  33 #include "lpfc.h"
  34 #include "lpfc_logmsg.h"
  35 #include "lpfc_crtn.h"
  36
  37
  38 /* Called to verify a rcv'ed ADISC was intended for us. */
  39 static int
  40 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
  41                  struct lpfc_name * nn, struct lpfc_name * pn)
  42 {
  43         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  44          * table entry for that node.
  45          */
  46         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
  47                 return (0);
  48
  49         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
  50                 return (0);
  51
  52         /* we match, return success */
  53         return (1);
  54 }
  55
  56
  57 int
  58 lpfc_check_sparm(struct lpfc_hba * phba,
  59                  struct lpfc_nodelist * ndlp, struct serv_parm * sp,
  60                  uint32_t class)
  61 {
  62         volatile struct serv_parm *hsp = &phba->fc_sparam;
  63         /* First check for supported version */
  64
  65         /* Next check for class validity */
  66         if (sp->cls1.classValid) {
  67
  68                 if (sp->cls1.rcvDataSizeMsb > hsp->cls1.rcvDataSizeMsb)
  69                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  70                 if (sp->cls1.rcvDataSizeLsb > hsp->cls1.rcvDataSizeLsb)
  71                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  72         } else if (class == CLASS1) {
  73                 return (0);
  74         }
  75
  76         if (sp->cls2.classValid) {
  77
  78                 if (sp->cls2.rcvDataSizeMsb > hsp->cls2.rcvDataSizeMsb)
  79                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  80                 if (sp->cls2.rcvDataSizeLsb > hsp->cls2.rcvDataSizeLsb)
  81                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  82         } else if (class == CLASS2) {
  83                 return (0);
  84         }
  85
  86         if (sp->cls3.classValid) {
  87
  88                 if (sp->cls3.rcvDataSizeMsb > hsp->cls3.rcvDataSizeMsb)
  89                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
  90                 if (sp->cls3.rcvDataSizeLsb > hsp->cls3.rcvDataSizeLsb)
  91                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
  92         } else if (class == CLASS3) {
  93                 return (0);
  94         }
  95
  96         if (sp->cmn.bbRcvSizeMsb > hsp->cmn.bbRcvSizeMsb)
  97                 sp->cmn.bbRcvSizeMsb = hsp->cmn.bbRcvSizeMsb;
  98         if (sp->cmn.bbRcvSizeLsb > hsp->cmn.bbRcvSizeLsb)
  99                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 100
 101         /* If check is good, copy wwpn wwnn into ndlp */
 102         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 103         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 104         return (1);
 105 }
 106
 107 static void *
 108 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 109                       struct lpfc_iocbq *cmdiocb,
 110                       struct lpfc_iocbq *rspiocb)
 111 {
 112         struct lpfc_dmabuf *pcmd, *prsp;
 113         uint32_t *lp;
 114         void     *ptr = NULL;
 115         IOCB_t   *irsp;
 116
 117         irsp = &rspiocb->iocb;
 118         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 119
 120         /* For lpfc_els_abort, context2 could be zero'ed to delay
 121          * freeing associated memory till after ABTS completes.
 122          */
 123         if (pcmd) {
 124                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 125                                        list);
 126                 if (prsp) {
 127                         lp = (uint32_t *) prsp->virt;
 128                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 129                 }
 130         }
 131         else {
 132                 /* Force ulpStatus error since we are returning NULL ptr */
 133                 if (!(irsp->ulpStatus)) {
 134                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 135                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 136                 }
 137                 ptr = NULL;
 138         }
 139         return (ptr);
 140 }
 141
 142
 143 /*
 144  * Free resources / clean up outstanding I/Os
 145  * associated with a LPFC_NODELIST entry. This
 146  * routine effectively results in a "software abort".
 147  */
 148 int
 149 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 150         int send_abts)
 151 {
 152         struct lpfc_sli *psli;
 153         struct lpfc_sli_ring *pring;
 154         struct lpfc_iocbq *iocb, *next_iocb;
 155         IOCB_t *icmd;
 156         int    found = 0;
 157
 158         /* Abort outstanding I/O on NPort <nlp_DID> */
 159         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 160                         "%d:0201 Abort outstanding I/O on NPort x%x "
 161                         "Data: x%x x%x x%x\n",
 162                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 163                         ndlp->nlp_state, ndlp->nlp_rpi);
 164
 165         psli = &phba->sli;
 166         pring = &psli->ring[LPFC_ELS_RING];
 167
 168         /* First check the txq */
 169         do {
 170                 found = 0;
 171                 spin_lock_irq(phba->host->host_lock);
 172                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 173                         /* Check to see if iocb matches the nport we are looking
 174                            for */
 175                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 176                                 found = 1;
 177                                 /* It matches, so deque and call compl with an
 178                                    error */
 179                                 list_del(&iocb->list);
 180                                 pring->txq_cnt--;
 181                                 if (iocb->iocb_cmpl) {
 182                                         icmd = &iocb->iocb;
 183                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 184                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 185                                         spin_unlock_irq(phba->host->host_lock);
 186                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 187                                         spin_lock_irq(phba->host->host_lock);
 188                                 } else {
 189                                         list_add_tail(&iocb->list,
 190                                                         &phba->lpfc_iocb_list);
 191                                 }
 192                                 break;
 193                         }
 194                 }
 195                 spin_unlock_irq(phba->host->host_lock);
 196         } while (found);
 197
 198         /* Everything on txcmplq will be returned by firmware
 199          * with a no rpi / linkdown / abort error.  For ring 0,
 200          * ELS discovery, we want to get rid of it right here.
 201          */
 202         /* Next check the txcmplq */
 203         do {
 204                 found = 0;
 205                 spin_lock_irq(phba->host->host_lock);
 206                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 207                                          list) {
 208                         /* Check to see if iocb matches the nport we are looking
 209                            for */
 210                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 211                                 found = 1;
 212                                 /* It matches, so deque and call compl with an
 213                                    error */
 214                                 list_del(&iocb->list);
 215                                 pring->txcmplq_cnt--;
 216
 217                                 icmd = &iocb->iocb;
 218                                 /* If the driver is completing an ELS
 219                                  * command early, flush it out of the firmware.
 220                                  */
 221                                 if (send_abts &&
 222                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 223                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 224                                         lpfc_sli_issue_abort_iotag32(phba,
 225                                                              pring, iocb);
 226                                 }
 227                                 if (iocb->iocb_cmpl) {
 228                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 229                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 230                                         spin_unlock_irq(phba->host->host_lock);
 231                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 232                                         spin_lock_irq(phba->host->host_lock);
 233                                 } else {
 234                                         list_add_tail(&iocb->list,
 235                                                         &phba->lpfc_iocb_list);
 236                                 }
 237                                 break;
 238                         }
 239                 }
 240                 spin_unlock_irq(phba->host->host_lock);
 241         } while(found);
 242
 243         /* If we are delaying issuing an ELS command, cancel it */
 244         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
 245                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 246                 del_timer_sync(&ndlp->nlp_delayfunc);
 247                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 248                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 249         }
 250         return (0);
 251 }
 252
 253 static int
 254 lpfc_rcv_plogi(struct lpfc_hba * phba,
 255                       struct lpfc_nodelist * ndlp,
 256                       struct lpfc_iocbq *cmdiocb)
 257 {
 258         struct lpfc_dmabuf *pcmd;
 259         uint32_t *lp;
 260         IOCB_t *icmd;
 261         struct serv_parm *sp;
 262         LPFC_MBOXQ_t *mbox;
 263         struct ls_rjt stat;
 264         int rc;
 265
 266         memset(&stat, 0, sizeof (struct ls_rjt));
 267         if (phba->hba_state <= LPFC_FLOGI) {
 268                 /* Before responding to PLOGI, check for pt2pt mode.
 269                  * If we are pt2pt, with an outstanding FLOGI, abort
 270                  * the FLOGI and resend it first.
 271                  */
 272                 if (phba->fc_flag & FC_PT2PT) {
 273                         lpfc_els_abort_flogi(phba);
 274                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 275                                 /* If the other side is supposed to initiate
 276                                  * the PLOGI anyway, just ACC it now and
 277                                  * move on with discovery.
 278                                  */
 279                                 phba->fc_edtov = FF_DEF_EDTOV;
 280                                 phba->fc_ratov = FF_DEF_RATOV;
 281                                 /* Start discovery - this should just do
 282                                    CLEAR_LA */
 283                                 lpfc_disc_start(phba);
 284                         }
 285                         else {
 286                                 lpfc_initial_flogi(phba);
 287                         }
 288                 }
 289                 else {
 290                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 291                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 292                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 293                                             ndlp);
 294                         return 0;
 295                 }
 296         }
 297         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 298         lp = (uint32_t *) pcmd->virt;
 299         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 300         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 301                 /* Reject this request because invalid parameters */
 302                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 303                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 304                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 305                 return (0);
 306         }
 307         icmd = &cmdiocb->iocb;
 308
 309         /* PLOGI chkparm OK */
 310         lpfc_printf_log(phba,
 311                         KERN_INFO,
 312                         LOG_ELS,
 313                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 314                         phba->brd_no,
 315                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 316                         ndlp->nlp_rpi);
 317
 318         if ((phba->cfg_fcp_class == 2) &&
 319             (sp->cls2.classValid)) {
 320                 ndlp->nlp_fcp_info |= CLASS2;
 321         } else {
 322                 ndlp->nlp_fcp_info |= CLASS3;
 323         }
 324         ndlp->nlp_class_sup = 0;
 325         if (sp->cls1.classValid)
 326                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 327         if (sp->cls2.classValid)
 328                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 329         if (sp->cls3.classValid)
 330                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 331         if (sp->cls4.classValid)
 332                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 333         ndlp->nlp_maxframe =
 334                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 335
 336         /* no need to reg_login if we are already in one of these states */
 337         switch(ndlp->nlp_state) {
 338         case  NLP_STE_NPR_NODE:
 339                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 340                         break;
 341         case  NLP_STE_REG_LOGIN_ISSUE:
 342         case  NLP_STE_PRLI_ISSUE:
 343         case  NLP_STE_UNMAPPED_NODE:
 344         case  NLP_STE_MAPPED_NODE:
 345                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 346                 return (1);
 347         }
 348
 349         if ((phba->fc_flag & FC_PT2PT)
 350             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 351                 /* rcv'ed PLOGI decides what our NPortId will be */
 352                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 353                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 354                 if (mbox == NULL)
 355                         goto out;
 356                 lpfc_config_link(phba, mbox);
 357                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 358                 rc = lpfc_sli_issue_mbox
 359                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 360                 if (rc == MBX_NOT_FINISHED) {
 361                         mempool_free( mbox, phba->mbox_mem_pool);
 362                         goto out;
 363                 }
 364
 365                 lpfc_can_disctmo(phba);
 366         }
 367         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 368         if (mbox == NULL)
 369                 goto out;
 370
 371         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 372                            (uint8_t *) sp, mbox, 0)) {
 373                 mempool_free( mbox, phba->mbox_mem_pool);
 374                 goto out;
 375         }
 376
 377         /* ACC PLOGI rsp command needs to execute first,
 378          * queue this mbox command to be processed later.
 379          */
 380         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 381         mbox->context2  = ndlp;
 382         ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
 383
 384         /* If there is an outstanding PLOGI issued, abort it before
 385          * sending ACC rsp to PLOGI recieved.
 386          */
 387         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 388                 /* software abort outstanding PLOGI */
 389                 lpfc_els_abort(phba, ndlp, 1);
 390         }
 391         ndlp->nlp_flag |= NLP_RCV_PLOGI;
 392         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 393         return (1);
 394
 395 out:
 396         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 397         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 398         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 399         return (0);
 400 }
 401
 402 static int
 403 lpfc_rcv_padisc(struct lpfc_hba * phba,
 404                 struct lpfc_nodelist * ndlp,
 405                 struct lpfc_iocbq *cmdiocb)
 406 {
 407         struct lpfc_dmabuf *pcmd;
 408         struct serv_parm *sp;
 409         struct lpfc_name *pnn, *ppn;
 410         struct ls_rjt stat;
 411         ADISC *ap;
 412         IOCB_t *icmd;
 413         uint32_t *lp;
 414         uint32_t cmd;
 415
 416         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 417         lp = (uint32_t *) pcmd->virt;
 418
 419         cmd = *lp++;
 420         if (cmd == ELS_CMD_ADISC) {
 421                 ap = (ADISC *) lp;
 422                 pnn = (struct lpfc_name *) & ap->nodeName;
 423                 ppn = (struct lpfc_name *) & ap->portName;
 424         } else {
 425                 sp = (struct serv_parm *) lp;
 426                 pnn = (struct lpfc_name *) & sp->nodeName;
 427                 ppn = (struct lpfc_name *) & sp->portName;
 428         }
 429
 430         icmd = &cmdiocb->iocb;
 431         if ((icmd->ulpStatus == 0) &&
 432             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 433                 if (cmd == ELS_CMD_ADISC) {
 434                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 435                 }
 436                 else {
 437                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 438                                 NULL, 0);
 439                 }
 440                 return (1);
 441         }
 442         /* Reject this request because invalid parameters */
 443         stat.un.b.lsRjtRsvd0 = 0;
 444         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 445         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 446         stat.un.b.vendorUnique = 0;
 447         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 448
 449         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 450         /* 1 sec timeout */
 451         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 452
 453         spin_lock_irq(phba->host->host_lock);
 454         ndlp->nlp_flag |= NLP_DELAY_TMO;
 455         spin_unlock_irq(phba->host->host_lock);
 456         ndlp->nlp_state = NLP_STE_NPR_NODE;
 457         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 458         return (0);
 459 }
 460
 461 static int
 462 lpfc_rcv_logo(struct lpfc_hba * phba,
 463                       struct lpfc_nodelist * ndlp,
 464                       struct lpfc_iocbq *cmdiocb)
 465 {
 466         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 467         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 468          * PLOGIs during LOGO storms from a device.
 469          */
 470         ndlp->nlp_flag |= NLP_LOGO_ACC;
 471         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 472
 473         if (!(ndlp->nlp_type & NLP_FABRIC)) {
 474                 /* Only try to re-login if this is NOT a Fabric Node */
 475                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 476                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 477                 spin_lock_irq(phba->host->host_lock);
 478                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 479                 spin_unlock_irq(phba->host->host_lock);
 480         }
 481
 482         ndlp->nlp_state = NLP_STE_NPR_NODE;
 483         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 484
 485         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 486         /* The driver has to wait until the ACC completes before it continues
 487          * processing the LOGO.  The action will resume in
 488          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 489          * unreg_login, the driver waits so the ACC does not get aborted.
 490          */
 491         return (0);
 492 }
 493
 494 static void
 495 lpfc_rcv_prli(struct lpfc_hba * phba,
 496                       struct lpfc_nodelist * ndlp,
 497                       struct lpfc_iocbq *cmdiocb)
 498 {
 499         struct lpfc_dmabuf *pcmd;
 500         uint32_t *lp;
 501         PRLI *npr;
 502         struct fc_rport *rport = ndlp->rport;
 503         u32 roles;
 504
 505         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 506         lp = (uint32_t *) pcmd->virt;
 507         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 508
 509         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 510         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 511         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 512             (npr->prliType == PRLI_FCP_TYPE)) {
 513                 if (npr->initiatorFunc)
 514                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 515                 if (npr->targetFunc)
 516                         ndlp->nlp_type |= NLP_FCP_TARGET;
 517                 if (npr->Retry)
 518                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 519         }
 520         if (rport) {
 521                 /* We need to update the rport role values */
 522                 roles = FC_RPORT_ROLE_UNKNOWN;
 523                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 524                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 525                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 526                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 527                 fc_remote_port_rolechg(rport, roles);
 528         }
 529 }
 530
 531 static uint32_t
 532 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 533                       struct lpfc_nodelist * ndlp)
 534 {
 535         /* Check config parameter use-adisc or FCP-2 */
 536         if ((phba->cfg_use_adisc == 0) &&
 537                 !(phba->fc_flag & FC_RSCN_MODE)) {
 538                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 539                         return (0);
 540         }
 541         spin_lock_irq(phba->host->host_lock);
 542         ndlp->nlp_flag |= NLP_NPR_ADISC;
 543         spin_unlock_irq(phba->host->host_lock);
 544         return (1);
 545 }
 546
 547 static uint32_t
 548 lpfc_disc_noop(struct lpfc_hba * phba,
 549                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 550 {
 551         /* This routine does nothing, just return the current state */
 552         return (ndlp->nlp_state);
 553 }
 554
 555 static uint32_t
 556 lpfc_disc_illegal(struct lpfc_hba * phba,
 557                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 558 {
 559         lpfc_printf_log(phba,
 560                         KERN_ERR,
 561                         LOG_DISCOVERY,
 562                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 563                         "state x%x Data: x%x x%x\n",
 564                         phba->brd_no,
 565                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 566                         ndlp->nlp_flag);
 567         return (ndlp->nlp_state);
 568 }
 569
 570 /* Start of Discovery State Machine routines */
 571
 572 static uint32_t
 573 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 574                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 575 {
 576         struct lpfc_iocbq *cmdiocb;
 577
 578         cmdiocb = (struct lpfc_iocbq *) arg;
 579
 580         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 581                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 582                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 583                 return (ndlp->nlp_state);
 584         }
 585         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 586         return (NLP_STE_FREED_NODE);
 587 }
 588
 589 static uint32_t
 590 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 591                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 592 {
 593         lpfc_issue_els_logo(phba, ndlp, 0);
 594         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 595         return (ndlp->nlp_state);
 596 }
 597
 598 static uint32_t
 599 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 600                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 601 {
 602         struct lpfc_iocbq     *cmdiocb;
 603
 604         cmdiocb = (struct lpfc_iocbq *) arg;
 605
 606         spin_lock_irq(phba->host->host_lock);
 607         ndlp->nlp_flag |= NLP_LOGO_ACC;
 608         spin_unlock_irq(phba->host->host_lock);
 609         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 610         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 611
 612         return (ndlp->nlp_state);
 613 }
 614
 615 static uint32_t
 616 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 617                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 618 {
 619         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 620         return (NLP_STE_FREED_NODE);
 621 }
 622
 623 static uint32_t
 624 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 625                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 626 {
 627         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 628         return (NLP_STE_FREED_NODE);
 629 }
 630
 631 static uint32_t
 632 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 633                            void *arg, uint32_t evt)
 634 {
 635         struct lpfc_iocbq *cmdiocb = arg;
 636         struct lpfc_dmabuf *pcmd;
 637         struct serv_parm *sp;
 638         uint32_t *lp;
 639         struct ls_rjt stat;
 640         int port_cmp;
 641
 642         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 643         lp = (uint32_t *) pcmd->virt;
 644         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 645
 646         memset(&stat, 0, sizeof (struct ls_rjt));
 647
 648         /* For a PLOGI, we only accept if our portname is less
 649          * than the remote portname.
 650          */
 651         phba->fc_stat.elsLogiCol++;
 652         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 653                           sizeof (struct lpfc_name));
 654
 655         if (port_cmp >= 0) {
 656                 /* Reject this request because the remote node will accept
 657                    ours */
 658                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 659                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 660                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 661         }
 662         else {
 663                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 664         } /* if our portname was less */
 665
 666         return (ndlp->nlp_state);
 667 }
 668
 669 static uint32_t
 670 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 671                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 672 {
 673         struct lpfc_iocbq     *cmdiocb;
 674
 675         cmdiocb = (struct lpfc_iocbq *) arg;
 676
 677         /* software abort outstanding PLOGI */
 678         lpfc_els_abort(phba, ndlp, 1);
 679         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 680         spin_lock_irq(phba->host->host_lock);
 681         ndlp->nlp_flag |= NLP_DELAY_TMO;
 682         spin_unlock_irq(phba->host->host_lock);
 683
 684         if (evt == NLP_EVT_RCV_LOGO) {
 685                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 686         }
 687         else {
 688                 lpfc_issue_els_logo(phba, ndlp, 0);
 689         }
 690
 691         /* Put ndlp in npr list set plogi timer for 1 sec */
 692         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 693         ndlp->nlp_state = NLP_STE_NPR_NODE;
 694         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 695
 696         return (ndlp->nlp_state);
 697 }
 698
 699 static uint32_t
 700 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 701                             struct lpfc_nodelist * ndlp, void *arg,
 702                             uint32_t evt)
 703 {
 704         struct lpfc_iocbq *cmdiocb, *rspiocb;
 705         struct lpfc_dmabuf *pcmd, *prsp;
 706         uint32_t *lp;
 707         IOCB_t *irsp;
 708         struct serv_parm *sp;
 709         LPFC_MBOXQ_t *mbox;
 710
 711         cmdiocb = (struct lpfc_iocbq *) arg;
 712         rspiocb = cmdiocb->context_un.rsp_iocb;
 713
 714         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 715                 return (ndlp->nlp_state);
 716         }
 717
 718         irsp = &rspiocb->iocb;
 719
 720         if (irsp->ulpStatus)
 721                 goto out;
 722
 723         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 724
 725         prsp = list_get_first(&pcmd->list,
 726                               struct lpfc_dmabuf,
 727                               list);
 728         lp = (uint32_t *) prsp->virt;
 729
 730         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 731         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 732                 goto out;
 733
 734         /* PLOGI chkparm OK */
 735         lpfc_printf_log(phba,
 736                         KERN_INFO,
 737                         LOG_ELS,
 738                         "%d:0121 PLOGI chkparm OK "
 739                         "Data: x%x x%x x%x x%x\n",
 740                         phba->brd_no,
 741                         ndlp->nlp_DID, ndlp->nlp_state,
 742                         ndlp->nlp_flag, ndlp->nlp_rpi);
 743
 744         if ((phba->cfg_fcp_class == 2) &&
 745             (sp->cls2.classValid)) {
 746                 ndlp->nlp_fcp_info |= CLASS2;
 747         } else {
 748                 ndlp->nlp_fcp_info |= CLASS3;
 749         }
 750         ndlp->nlp_class_sup = 0;
 751         if (sp->cls1.classValid)
 752                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 753         if (sp->cls2.classValid)
 754                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 755         if (sp->cls3.classValid)
 756                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 757         if (sp->cls4.classValid)
 758                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 759         ndlp->nlp_maxframe =
 760                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 761                 sp->cmn.bbRcvSizeLsb;
 762
 763         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 764                                    GFP_KERNEL)))
 765                 goto out;
 766
 767         lpfc_unreg_rpi(phba, ndlp);
 768         if (lpfc_reg_login
 769             (phba, irsp->un.elsreq64.remoteID,
 770              (uint8_t *) sp, mbox, 0) == 0) {
 771                 /* set_slim mailbox command needs to
 772                  * execute first, queue this command to
 773                  * be processed later.
 774                  */
 775                 switch(ndlp->nlp_DID) {
 776                 case NameServer_DID:
 777                         mbox->mbox_cmpl =
 778                                 lpfc_mbx_cmpl_ns_reg_login;
 779                         break;
 780                 case FDMI_DID:
 781                         mbox->mbox_cmpl =
 782                                 lpfc_mbx_cmpl_fdmi_reg_login;
 783                         break;
 784                 default:
 785                         mbox->mbox_cmpl =
 786                                 lpfc_mbx_cmpl_reg_login;
 787                 }
 788                 mbox->context2 = ndlp;
 789                 if (lpfc_sli_issue_mbox(phba, mbox,
 790                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 791                     != MBX_NOT_FINISHED) {
 792                         ndlp->nlp_state =
 793                                 NLP_STE_REG_LOGIN_ISSUE;
 794                         lpfc_nlp_list(phba, ndlp,
 795                                       NLP_REGLOGIN_LIST);
 796                         return (ndlp->nlp_state);
 797                 }
 798                 mempool_free(mbox, phba->mbox_mem_pool);
 799         } else {
 800                 mempool_free(mbox, phba->mbox_mem_pool);
 801         }
 802
 803
 804  out:
 805         /* Free this node since the driver cannot login or has the wrong
 806            sparm */
 807         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 808         return (NLP_STE_FREED_NODE);
 809 }
 810
 811 static uint32_t
 812 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 813                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 814 {
 815         /* software abort outstanding PLOGI */
 816         lpfc_els_abort(phba, ndlp, 1);
 817
 818         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 819         return (NLP_STE_FREED_NODE);
 820 }
 821
 822 static uint32_t
 823 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 824                             struct lpfc_nodelist * ndlp, void *arg,
 825                             uint32_t evt)
 826 {
 827         /* software abort outstanding PLOGI */
 828         lpfc_els_abort(phba, ndlp, 1);
 829
 830         ndlp->nlp_state = NLP_STE_NPR_NODE;
 831         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 832         spin_lock_irq(phba->host->host_lock);
 833         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 834         spin_unlock_irq(phba->host->host_lock);
 835
 836         return (ndlp->nlp_state);
 837 }
 838
 839 static uint32_t
 840 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 841                             struct lpfc_nodelist * ndlp, void *arg,
 842                             uint32_t evt)
 843 {
 844         struct lpfc_iocbq *cmdiocb;
 845
 846         /* software abort outstanding ADISC */
 847         lpfc_els_abort(phba, ndlp, 1);
 848
 849         cmdiocb = (struct lpfc_iocbq *) arg;
 850
 851         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 852                 return (ndlp->nlp_state);
 853         }
 854         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 855         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 856         lpfc_issue_els_plogi(phba, ndlp, 0);
 857
 858         return (ndlp->nlp_state);
 859 }
 860
 861 static uint32_t
 862 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 863                             struct lpfc_nodelist * ndlp, void *arg,
 864                             uint32_t evt)
 865 {
 866         struct lpfc_iocbq *cmdiocb;
 867
 868         cmdiocb = (struct lpfc_iocbq *) arg;
 869
 870         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 871         return (ndlp->nlp_state);
 872 }
 873
 874 static uint32_t
 875 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 876                             struct lpfc_nodelist * ndlp, void *arg,
 877                             uint32_t evt)
 878 {
 879         struct lpfc_iocbq *cmdiocb;
 880
 881         cmdiocb = (struct lpfc_iocbq *) arg;
 882
 883         /* software abort outstanding ADISC */
 884         lpfc_els_abort(phba, ndlp, 0);
 885
 886         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 887         return (ndlp->nlp_state);
 888 }
 889
 890 static uint32_t
 891 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 892                             struct lpfc_nodelist * ndlp, void *arg,
 893                             uint32_t evt)
 894 {
 895         struct lpfc_iocbq *cmdiocb;
 896
 897         cmdiocb = (struct lpfc_iocbq *) arg;
 898
 899         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 900         return (ndlp->nlp_state);
 901 }
 902
 903 static uint32_t
 904 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 905                             struct lpfc_nodelist * ndlp, void *arg,
 906                             uint32_t evt)
 907 {
 908         struct lpfc_iocbq *cmdiocb;
 909
 910         cmdiocb = (struct lpfc_iocbq *) arg;
 911
 912         /* Treat like rcv logo */
 913         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 914         return (ndlp->nlp_state);
 915 }
 916
 917 static uint32_t
 918 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 919                             struct lpfc_nodelist * ndlp, void *arg,
 920                             uint32_t evt)
 921 {
 922         struct lpfc_iocbq *cmdiocb, *rspiocb;
 923         IOCB_t *irsp;
 924         ADISC *ap;
 925
 926         cmdiocb = (struct lpfc_iocbq *) arg;
 927         rspiocb = cmdiocb->context_un.rsp_iocb;
 928
 929         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 930         irsp = &rspiocb->iocb;
 931
 932         if ((irsp->ulpStatus) ||
 933                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 934                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 935                 /* 1 sec timeout */
 936                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 937                 spin_lock_irq(phba->host->host_lock);
 938                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 939                 spin_unlock_irq(phba->host->host_lock);
 940
 941                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 942                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 943
 944                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 945                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 946                 lpfc_unreg_rpi(phba, ndlp);
 947                 return (ndlp->nlp_state);
 948         }
 949         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 950                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 951                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 952         } else {
 953                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 954                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 955         }
 956         return (ndlp->nlp_state);
 957 }
 958
 959 static uint32_t
 960 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 961                             struct lpfc_nodelist * ndlp, void *arg,
 962                             uint32_t evt)
 963 {
 964         /* software abort outstanding ADISC */
 965         lpfc_els_abort(phba, ndlp, 1);
 966
 967         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 968         return (NLP_STE_FREED_NODE);
 969 }
 970
 971 static uint32_t
 972 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
 973                             struct lpfc_nodelist * ndlp, void *arg,
 974                             uint32_t evt)
 975 {
 976         /* software abort outstanding ADISC */
 977         lpfc_els_abort(phba, ndlp, 1);
 978
 979         ndlp->nlp_state = NLP_STE_NPR_NODE;
 980         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 981         spin_lock_irq(phba->host->host_lock);
 982         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 983         spin_unlock_irq(phba->host->host_lock);
 984
 985         lpfc_disc_set_adisc(phba, ndlp);
 986         return (ndlp->nlp_state);
 987 }
 988
 989 static uint32_t
 990 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
 991                               struct lpfc_nodelist * ndlp, void *arg,
 992                               uint32_t evt)
 993 {
 994         struct lpfc_iocbq *cmdiocb;
 995
 996         cmdiocb = (struct lpfc_iocbq *) arg;
 997
 998         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 999         return (ndlp->nlp_state);
1000 }
1001
1002 static uint32_t
1003 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1004                              struct lpfc_nodelist * ndlp, void *arg,
1005                              uint32_t evt)
1006 {
1007         struct lpfc_iocbq *cmdiocb;
1008
1009         cmdiocb = (struct lpfc_iocbq *) arg;
1010
1011         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1012         return (ndlp->nlp_state);
1013 }
1014
1015 static uint32_t
1016 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1017                              struct lpfc_nodelist * ndlp, void *arg,
1018                              uint32_t evt)
1019 {
1020         struct lpfc_iocbq *cmdiocb;
1021
1022         cmdiocb = (struct lpfc_iocbq *) arg;
1023
1024         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1025         return (ndlp->nlp_state);
1026 }
1027
1028 static uint32_t
1029 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1030                                struct lpfc_nodelist * ndlp, void *arg,
1031                                uint32_t evt)
1032 {
1033         struct lpfc_iocbq *cmdiocb;
1034
1035         cmdiocb = (struct lpfc_iocbq *) arg;
1036
1037         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1038         return (ndlp->nlp_state);
1039 }
1040
1041 static uint32_t
1042 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1043                              struct lpfc_nodelist * ndlp, void *arg,
1044                              uint32_t evt)
1045 {
1046         struct lpfc_iocbq *cmdiocb;
1047
1048         cmdiocb = (struct lpfc_iocbq *) arg;
1049         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1050         return (ndlp->nlp_state);
1051 }
1052
1053 static uint32_t
1054 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1055                                   struct lpfc_nodelist * ndlp,
1056                                   void *arg, uint32_t evt)
1057 {
1058         LPFC_MBOXQ_t *pmb;
1059         MAILBOX_t *mb;
1060         uint32_t did;
1061
1062         pmb = (LPFC_MBOXQ_t *) arg;
1063         mb = &pmb->mb;
1064         did = mb->un.varWords[1];
1065         if (mb->mbxStatus) {
1066                 /* RegLogin failed */
1067                 lpfc_printf_log(phba,
1068                                 KERN_ERR,
1069                                 LOG_DISCOVERY,
1070                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1071                                 phba->brd_no,
1072                                 did, mb->mbxStatus, phba->hba_state);
1073
1074                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1075                 spin_lock_irq(phba->host->host_lock);
1076                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1077                 spin_unlock_irq(phba->host->host_lock);
1078
1079                 lpfc_issue_els_logo(phba, ndlp, 0);
1080                 /* Put ndlp in npr list set plogi timer for 1 sec */
1081                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1082                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1083                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1084                 return (ndlp->nlp_state);
1085         }
1086
1087         if (ndlp->nlp_rpi != 0)
1088                 lpfc_findnode_remove_rpi(phba, ndlp->nlp_rpi);
1089
1090         ndlp->nlp_rpi = mb->un.varWords[0];
1091         lpfc_addnode_rpi(phba, ndlp, ndlp->nlp_rpi);
1092
1093         /* Only if we are not a fabric nport do we issue PRLI */
1094         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1095                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1096                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1097                 lpfc_issue_els_prli(phba, ndlp, 0);
1098         } else {
1099                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1100                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1101         }
1102         return (ndlp->nlp_state);
1103 }
1104
1105 static uint32_t
1106 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1107                               struct lpfc_nodelist * ndlp, void *arg,
1108                               uint32_t evt)
1109 {
1110         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1111         return (NLP_STE_FREED_NODE);
1112 }
1113
1114 static uint32_t
1115 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1116                                struct lpfc_nodelist * ndlp, void *arg,
1117                                uint32_t evt)
1118 {
1119         ndlp->nlp_state = NLP_STE_NPR_NODE;
1120         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1121         spin_lock_irq(phba->host->host_lock);
1122         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1123         spin_unlock_irq(phba->host->host_lock);
1124         return (ndlp->nlp_state);
1125 }
1126
1127 static uint32_t
1128 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1129                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1130 {
1131         struct lpfc_iocbq *cmdiocb;
1132
1133         cmdiocb = (struct lpfc_iocbq *) arg;
1134
1135         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1136         return (ndlp->nlp_state);
1137 }
1138
1139 static uint32_t
1140 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1141                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1142 {
1143         struct lpfc_iocbq *cmdiocb;
1144
1145         cmdiocb = (struct lpfc_iocbq *) arg;
1146
1147         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1148         return (ndlp->nlp_state);
1149 }
1150
1151 static uint32_t
1152 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1153                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1154 {
1155         struct lpfc_iocbq *cmdiocb;
1156
1157         cmdiocb = (struct lpfc_iocbq *) arg;
1158
1159         /* Software abort outstanding PRLI before sending acc */
1160         lpfc_els_abort(phba, ndlp, 1);
1161
1162         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1163         return (ndlp->nlp_state);
1164 }
1165
1166 static uint32_t
1167 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1168                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1169 {
1170         struct lpfc_iocbq *cmdiocb;
1171
1172         cmdiocb = (struct lpfc_iocbq *) arg;
1173
1174         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1175         return (ndlp->nlp_state);
1176 }
1177
1178 /* This routine is envoked when we rcv a PRLO request from a nport
1179  * we are logged into.  We should send back a PRLO rsp setting the
1180  * appropriate bits.
1181  * NEXT STATE = PRLI_ISSUE
1182  */
1183 static uint32_t
1184 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1185                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1186 {
1187         struct lpfc_iocbq *cmdiocb;
1188
1189         cmdiocb = (struct lpfc_iocbq *) arg;
1190         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1191         return (ndlp->nlp_state);
1192 }
1193
1194 static uint32_t
1195 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1196                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1197 {
1198         struct lpfc_iocbq *cmdiocb, *rspiocb;
1199         IOCB_t *irsp;
1200         PRLI *npr;
1201
1202         cmdiocb = (struct lpfc_iocbq *) arg;
1203         rspiocb = cmdiocb->context_un.rsp_iocb;
1204         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1205
1206         irsp = &rspiocb->iocb;
1207         if (irsp->ulpStatus) {
1208                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1209                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1210                 return (ndlp->nlp_state);
1211         }
1212
1213         /* Check out PRLI rsp */
1214         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1215         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1216         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1217             (npr->prliType == PRLI_FCP_TYPE)) {
1218                 if (npr->initiatorFunc)
1219                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1220                 if (npr->targetFunc)
1221                         ndlp->nlp_type |= NLP_FCP_TARGET;
1222                 if (npr->Retry)
1223                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1224         }
1225
1226         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1227         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1228         return (ndlp->nlp_state);
1229 }
1230
1231 /*! lpfc_device_rm_prli_issue
1232   *
1233   * \pre
1234   * \post
1235   * \param   phba
1236   * \param   ndlp
1237   * \param   arg
1238   * \param   evt
1239   * \return  uint32_t
1240   *
1241   * \b Description:
1242   *    This routine is envoked when we a request to remove a nport we are in the
1243   *    process of PRLIing. We should software abort outstanding prli, unreg
1244   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1245   *    on plogi list so it can be freed when LOGO completes.
1246   *
1247   */
1248 static uint32_t
1249 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1250                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1251 {
1252         /* software abort outstanding PRLI */
1253         lpfc_els_abort(phba, ndlp, 1);
1254
1255         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1256         return (NLP_STE_FREED_NODE);
1257 }
1258
1259
1260 /*! lpfc_device_recov_prli_issue
1261   *
1262   * \pre
1263   * \post
1264   * \param   phba
1265   * \param   ndlp
1266   * \param   arg
1267   * \param   evt
1268   * \return  uint32_t
1269   *
1270   * \b Description:
1271   *    The routine is envoked when the state of a device is unknown, like
1272   *    during a link down. We should remove the nodelist entry from the
1273   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1274   *    outstanding PRLI command, then free the node entry.
1275   */
1276 static uint32_t
1277 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1278                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1279 {
1280         /* software abort outstanding PRLI */
1281         lpfc_els_abort(phba, ndlp, 1);
1282
1283         ndlp->nlp_state = NLP_STE_NPR_NODE;
1284         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1285         spin_lock_irq(phba->host->host_lock);
1286         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1287         spin_unlock_irq(phba->host->host_lock);
1288         return (ndlp->nlp_state);
1289 }
1290
1291 static uint32_t
1292 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1293                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1294 {
1295         struct lpfc_iocbq *cmdiocb;
1296
1297         cmdiocb = (struct lpfc_iocbq *) arg;
1298
1299         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1300         return (ndlp->nlp_state);
1301 }
1302
1303 static uint32_t
1304 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1305                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1306 {
1307         struct lpfc_iocbq *cmdiocb;
1308
1309         cmdiocb = (struct lpfc_iocbq *) arg;
1310
1311         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1312         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1313         return (ndlp->nlp_state);
1314 }
1315
1316 static uint32_t
1317 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1318                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1319 {
1320         struct lpfc_iocbq *cmdiocb;
1321
1322         cmdiocb = (struct lpfc_iocbq *) arg;
1323
1324         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1325         return (ndlp->nlp_state);
1326 }
1327
1328 static uint32_t
1329 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1330                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1331 {
1332         struct lpfc_iocbq *cmdiocb;
1333
1334         cmdiocb = (struct lpfc_iocbq *) arg;
1335
1336         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1337         return (ndlp->nlp_state);
1338 }
1339
1340 static uint32_t
1341 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1342                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1343 {
1344         struct lpfc_iocbq *cmdiocb;
1345
1346         cmdiocb = (struct lpfc_iocbq *) arg;
1347
1348         /* Treat like rcv logo */
1349         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1350         return (ndlp->nlp_state);
1351 }
1352
1353 static uint32_t
1354 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1355                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1356 {
1357         ndlp->nlp_state = NLP_STE_NPR_NODE;
1358         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1359         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1360         lpfc_disc_set_adisc(phba, ndlp);
1361
1362         return (ndlp->nlp_state);
1363 }
1364
1365 static uint32_t
1366 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1367                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1368 {
1369         struct lpfc_iocbq *cmdiocb;
1370
1371         cmdiocb = (struct lpfc_iocbq *) arg;
1372
1373         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1374         return (ndlp->nlp_state);
1375 }
1376
1377 static uint32_t
1378 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1379                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1380 {
1381         struct lpfc_iocbq *cmdiocb;
1382
1383         cmdiocb = (struct lpfc_iocbq *) arg;
1384
1385         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1386         return (ndlp->nlp_state);
1387 }
1388
1389 static uint32_t
1390 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1391                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1392 {
1393         struct lpfc_iocbq *cmdiocb;
1394
1395         cmdiocb = (struct lpfc_iocbq *) arg;
1396
1397         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1398         return (ndlp->nlp_state);
1399 }
1400
1401 static uint32_t
1402 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1403                             struct lpfc_nodelist * ndlp, void *arg,
1404                             uint32_t evt)
1405 {
1406         struct lpfc_iocbq *cmdiocb;
1407
1408         cmdiocb = (struct lpfc_iocbq *) arg;
1409
1410         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1411         return (ndlp->nlp_state);
1412 }
1413
1414 static uint32_t
1415 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1416                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1417 {
1418         struct lpfc_iocbq *cmdiocb;
1419
1420         cmdiocb = (struct lpfc_iocbq *) arg;
1421
1422         /* flush the target */
1423         spin_lock_irq(phba->host->host_lock);
1424         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1425                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1426         spin_unlock_irq(phba->host->host_lock);
1427
1428         /* Treat like rcv logo */
1429         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1430         return (ndlp->nlp_state);
1431 }
1432
1433 static uint32_t
1434 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1435                             struct lpfc_nodelist * ndlp, void *arg,
1436                             uint32_t evt)
1437 {
1438         ndlp->nlp_state = NLP_STE_NPR_NODE;
1439         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1440         spin_lock_irq(phba->host->host_lock);
1441         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1442         spin_unlock_irq(phba->host->host_lock);
1443         lpfc_disc_set_adisc(phba, ndlp);
1444         return (ndlp->nlp_state);
1445 }
1446
1447 static uint32_t
1448 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1449                             struct lpfc_nodelist * ndlp, void *arg,
1450                             uint32_t evt)
1451 {
1452         struct lpfc_iocbq *cmdiocb;
1453
1454         cmdiocb = (struct lpfc_iocbq *) arg;
1455
1456         /* Ignore PLOGI if we have an outstanding LOGO */
1457         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1458                 return (ndlp->nlp_state);
1459         }
1460
1461         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1462                 spin_lock_irq(phba->host->host_lock);
1463                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1464                 spin_unlock_irq(phba->host->host_lock);
1465                 return (ndlp->nlp_state);
1466         }
1467
1468         /* send PLOGI immediately, move to PLOGI issue state */
1469         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1470                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1471                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1472                         lpfc_issue_els_plogi(phba, ndlp, 0);
1473         }
1474         return (ndlp->nlp_state);
1475 }
1476
1477 static uint32_t
1478 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1479                             struct lpfc_nodelist * ndlp, void *arg,
1480                             uint32_t evt)
1481 {
1482         struct lpfc_iocbq     *cmdiocb;
1483         struct ls_rjt          stat;
1484
1485         cmdiocb = (struct lpfc_iocbq *) arg;
1486
1487         memset(&stat, 0, sizeof (struct ls_rjt));
1488         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1489         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1490         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1491
1492         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1493                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1494                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1495                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1496                         lpfc_issue_els_adisc(phba, ndlp, 0);
1497                 } else {
1498                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1499                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1500                         lpfc_issue_els_plogi(phba, ndlp, 0);
1501                 }
1502         }
1503         return (ndlp->nlp_state);
1504 }
1505
1506 static uint32_t
1507 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1508                             struct lpfc_nodelist * ndlp, void *arg,
1509                             uint32_t evt)
1510 {
1511         struct lpfc_iocbq     *cmdiocb;
1512
1513         cmdiocb = (struct lpfc_iocbq *) arg;
1514
1515         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1516         return (ndlp->nlp_state);
1517 }
1518
1519 static uint32_t
1520 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1521                             struct lpfc_nodelist * ndlp, void *arg,
1522                             uint32_t evt)
1523 {
1524         struct lpfc_iocbq     *cmdiocb;
1525
1526         cmdiocb = (struct lpfc_iocbq *) arg;
1527
1528         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1529
1530         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1531                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1532                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1533                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1534                         lpfc_issue_els_adisc(phba, ndlp, 0);
1535                 } else {
1536                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1537                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1538                         lpfc_issue_els_plogi(phba, ndlp, 0);
1539                 }
1540         }
1541         return (ndlp->nlp_state);
1542 }
1543
1544 static uint32_t
1545 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1546                             struct lpfc_nodelist * ndlp, void *arg,
1547                             uint32_t evt)
1548 {
1549         struct lpfc_iocbq     *cmdiocb;
1550
1551         cmdiocb = (struct lpfc_iocbq *) arg;
1552
1553         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1554
1555         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1556                 if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
1557                         return (ndlp->nlp_state);
1558                 } else {
1559                         spin_lock_irq(phba->host->host_lock);
1560                         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1561                         spin_unlock_irq(phba->host->host_lock);
1562                         del_timer_sync(&ndlp->nlp_delayfunc);
1563                         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1564                                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1565                 }
1566         }
1567
1568         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1569         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1570         lpfc_issue_els_plogi(phba, ndlp, 0);
1571         return (ndlp->nlp_state);
1572 }
1573
1574 static uint32_t
1575 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1576                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1577 {
1578         lpfc_unreg_rpi(phba, ndlp);
1579         /* This routine does nothing, just return the current state */
1580         return (ndlp->nlp_state);
1581 }
1582
1583 static uint32_t
1584 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1585                             struct lpfc_nodelist * ndlp, void *arg,
1586                             uint32_t evt)
1587 {
1588         LPFC_MBOXQ_t *pmb;
1589         MAILBOX_t *mb;
1590
1591         pmb = (LPFC_MBOXQ_t *) arg;
1592         mb = &pmb->mb;
1593
1594         /* save rpi */
1595         if (ndlp->nlp_rpi != 0)
1596                 lpfc_findnode_remove_rpi(phba, ndlp->nlp_rpi);
1597
1598         ndlp->nlp_rpi = mb->un.varWords[0];
1599         lpfc_addnode_rpi(phba, ndlp, ndlp->nlp_rpi);
1600
1601         return (ndlp->nlp_state);
1602 }
1603
1604 static uint32_t
1605 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1606                             struct lpfc_nodelist * ndlp, void *arg,
1607                             uint32_t evt)
1608 {
1609         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1610         return (NLP_STE_FREED_NODE);
1611 }
1612
1613 static uint32_t
1614 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1615                             struct lpfc_nodelist * ndlp, void *arg,
1616                             uint32_t evt)
1617 {
1618         spin_lock_irq(phba->host->host_lock);
1619         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1620         spin_unlock_irq(phba->host->host_lock);
1621         return (ndlp->nlp_state);
1622 }
1623
1624
1625 /* This next section defines the NPort Discovery State Machine */
1626
1627 /* There are 4 different double linked lists nodelist entries can reside on.
1628  * The plogi list and adisc list are used when Link Up discovery or RSCN
1629  * processing is needed. Each list holds the nodes that we will send PLOGI
1630  * or ADISC on. These lists will keep track of what nodes will be effected
1631  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1632  * The unmapped_list will contain all nodes that we have successfully logged
1633  * into at the Fibre Channel level. The mapped_list will contain all nodes
1634  * that are mapped FCP targets.
1635  */
1636 /*
1637  * The bind list is a list of undiscovered (potentially non-existent) nodes
1638  * that we have saved binding information on. This information is used when
1639  * nodes transition from the unmapped to the mapped list.
1640  */
1641 /* For UNUSED_NODE state, the node has just been allocated .
1642  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1643  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1644  * and put on the unmapped list. For ADISC processing, the node is taken off
1645  * the ADISC list and placed on either the mapped or unmapped list (depending
1646  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1647  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1648  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1649  * node, the node is taken off the unmapped list. The binding list is checked
1650  * for a valid binding, or a binding is automatically assigned. If binding
1651  * assignment is unsuccessful, the node is left on the unmapped list. If
1652  * binding assignment is successful, the associated binding list entry (if
1653  * any) is removed, and the node is placed on the mapped list.
1654  */
1655 /*
1656  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1657  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1658  * expire, all effected nodes will receive a DEVICE_RM event.
1659  */
1660 /*
1661  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1662  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1663  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1664  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1665  * we will first process the ADISC list.  32 entries are processed initially and
1666  * ADISC is initited for each one.  Completions / Events for each node are
1667  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1668  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1669  * waiting, and the ADISC list count is identically 0, then we are done. For
1670  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1671  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1672  * list.  32 entries are processed initially and PLOGI is initited for each one.
1673  * Completions / Events for each node are funnelled thru the state machine.  As
1674  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1675  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1676  * indentically 0, then we are done. We have now completed discovery / RSCN
1677  * handling. Upon completion, ALL nodes should be on either the mapped or
1678  * unmapped lists.
1679  */
1680
1681 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1682      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1683         /* Action routine                  Event       Current State  */
1684         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1685         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1686         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1687         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1688         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1689         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1690         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1691         lpfc_disc_illegal,              /* CMPL_PRLI       */
1692         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1693         lpfc_disc_illegal,              /* CMPL_ADISC      */
1694         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1695         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1696         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1697
1698         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1699         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1700         lpfc_rcv_els_plogi_issue,       /* RCV_LOGO        */
1701         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1702         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1703         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1704         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1705         lpfc_disc_illegal,              /* CMPL_PRLI       */
1706         lpfc_disc_illegal,              /* CMPL_LOGO       */
1707         lpfc_disc_illegal,              /* CMPL_ADISC      */
1708         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1709         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1710         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1711
1712         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1713         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1714         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1715         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1716         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1717         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1718         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1719         lpfc_disc_illegal,              /* CMPL_PRLI       */
1720         lpfc_disc_illegal,              /* CMPL_LOGO       */
1721         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1722         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1723         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1724         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1725
1726         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1727         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1728         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1729         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1730         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1731         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1732         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1733         lpfc_disc_illegal,              /* CMPL_PRLI       */
1734         lpfc_disc_illegal,              /* CMPL_LOGO       */
1735         lpfc_disc_illegal,              /* CMPL_ADISC      */
1736         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1737         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1738         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1739
1740         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1741         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1742         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1743         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1744         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1745         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1746         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1747         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1748         lpfc_disc_illegal,              /* CMPL_LOGO       */
1749         lpfc_disc_illegal,              /* CMPL_ADISC      */
1750         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1751         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1752         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1753
1754         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1755         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1756         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1757         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1758         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1759         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1760         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1761         lpfc_disc_illegal,              /* CMPL_PRLI       */
1762         lpfc_disc_illegal,              /* CMPL_LOGO       */
1763         lpfc_disc_illegal,              /* CMPL_ADISC      */
1764         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1765         lpfc_disc_illegal,              /* DEVICE_RM       */
1766         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1767
1768         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1769         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1770         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1771         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1772         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1773         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1774         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1775         lpfc_disc_illegal,              /* CMPL_PRLI       */
1776         lpfc_disc_illegal,              /* CMPL_LOGO       */
1777         lpfc_disc_illegal,              /* CMPL_ADISC      */
1778         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1779         lpfc_disc_illegal,              /* DEVICE_RM       */
1780         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1781
1782         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1783         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1784         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1785         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1786         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1787         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1788         lpfc_disc_noop,                 /* CMPL_PLOGI      */
1789         lpfc_disc_noop,                 /* CMPL_PRLI       */
1790         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1791         lpfc_disc_noop,                 /* CMPL_ADISC      */
1792         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1793         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1794         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1795 };
1796
1797 int
1798 lpfc_disc_state_machine(struct lpfc_hba * phba,
1799                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1800 {
1801         uint32_t cur_state, rc;
1802         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1803                          uint32_t);
1804
1805         ndlp->nlp_disc_refcnt++;
1806         cur_state = ndlp->nlp_state;
1807
1808         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1809         lpfc_printf_log(phba,
1810                         KERN_INFO,
1811                         LOG_DISCOVERY,
1812                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1813                         "Data: x%x\n",
1814                         phba->brd_no,
1815                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1816
1817         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1818         rc = (func) (phba, ndlp, arg, evt);
1819
1820         /* DSM out state <rc> on NPort <nlp_DID> */
1821         lpfc_printf_log(phba,
1822                        KERN_INFO,
1823                        LOG_DISCOVERY,
1824                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1825                        phba->brd_no,
1826                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1827
1828         ndlp->nlp_disc_refcnt--;
1829
1830         /* Check to see if ndlp removal is deferred */
1831         if ((ndlp->nlp_disc_refcnt == 0)
1832             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1833                 spin_lock_irq(phba->host->host_lock);
1834                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1835                 spin_unlock_irq(phba->host->host_lock);
1836                 lpfc_nlp_remove(phba, ndlp);
1837                 return (NLP_STE_FREED_NODE);
1838         }
1839         if (rc == NLP_STE_FREED_NODE)
1840                 return (NLP_STE_FREED_NODE);
1841         ndlp->nlp_state = rc;
1842         return (rc);
1843 }