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

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2005 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <scsi/scsi.h>
  27 #include <scsi/scsi_device.h>
  28 #include <scsi/scsi_host.h>
  29 #include <scsi/scsi_transport_fc.h>
  30
  31 #include "lpfc_hw.h"
  32 #include "lpfc_sli.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_scsi.h"
  35 #include "lpfc.h"
  36 #include "lpfc_logmsg.h"
  37 #include "lpfc_crtn.h"
  38
  39
  40 /* Called to verify a rcv'ed ADISC was intended for us. */
  41 static int
  42 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
  43                  struct lpfc_name * nn, struct lpfc_name * pn)
  44 {
  45         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  46          * table entry for that node.
  47          */
  48         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
  49                 return (0);
  50
  51         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
  52                 return (0);
  53
  54         /* we match, return success */
  55         return (1);
  56 }
  57
  58 int
  59 lpfc_check_sparm(struct lpfc_hba * phba,
  60                  struct lpfc_nodelist * ndlp, struct serv_parm * sp,
  61                  uint32_t class)
  62 {
  63         volatile struct serv_parm *hsp = &phba->fc_sparam;
  64         uint16_t hsp_value, ssp_value = 0;
  65
  66         /*
  67          * The receive data field size and buffer-to-buffer receive data field
  68          * size entries are 16 bits but are represented as two 8-bit fields in
  69          * the driver data structure to account for rsvd bits and other control
  70          * bits.  Reconstruct and compare the fields as a 16-bit values before
  71          * correcting the byte values.
  72          */
  73         if (sp->cls1.classValid) {
  74                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  75                                 hsp->cls1.rcvDataSizeLsb;
  76                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  77                                 sp->cls1.rcvDataSizeLsb;
  78                 if (ssp_value > hsp_value) {
  79                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  80                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  81                 }
  82         } else if (class == CLASS1) {
  83                 return 0;
  84         }
  85
  86         if (sp->cls2.classValid) {
  87                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  88                                 hsp->cls2.rcvDataSizeLsb;
  89                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  90                                 sp->cls2.rcvDataSizeLsb;
  91                 if (ssp_value > hsp_value) {
  92                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  93                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  94                 }
  95         } else if (class == CLASS2) {
  96                 return 0;
  97         }
  98
  99         if (sp->cls3.classValid) {
 100                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 101                                 hsp->cls3.rcvDataSizeLsb;
 102                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 103                                 sp->cls3.rcvDataSizeLsb;
 104                 if (ssp_value > hsp_value) {
 105                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 106                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 107                 }
 108         } else if (class == CLASS3) {
 109                 return 0;
 110         }
 111
 112         /*
 113          * Preserve the upper four bits of the MSB from the PLOGI response.
 114          * These bits contain the Buffer-to-Buffer State Change Number
 115          * from the target and need to be passed to the FW.
 116          */
 117         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 118         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 119         if (ssp_value > hsp_value) {
 120                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 121                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 122                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 123         }
 124
 125         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 126         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 127         return 1;
 128 }
 129
 130 static void *
 131 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 132                       struct lpfc_iocbq *cmdiocb,
 133                       struct lpfc_iocbq *rspiocb)
 134 {
 135         struct lpfc_dmabuf *pcmd, *prsp;
 136         uint32_t *lp;
 137         void     *ptr = NULL;
 138         IOCB_t   *irsp;
 139
 140         irsp = &rspiocb->iocb;
 141         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 142
 143         /* For lpfc_els_abort, context2 could be zero'ed to delay
 144          * freeing associated memory till after ABTS completes.
 145          */
 146         if (pcmd) {
 147                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 148                                        list);
 149                 if (prsp) {
 150                         lp = (uint32_t *) prsp->virt;
 151                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 152                 }
 153         }
 154         else {
 155                 /* Force ulpStatus error since we are returning NULL ptr */
 156                 if (!(irsp->ulpStatus)) {
 157                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 158                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 159                 }
 160                 ptr = NULL;
 161         }
 162         return (ptr);
 163 }
 164
 165
 166 /*
 167  * Free resources / clean up outstanding I/Os
 168  * associated with a LPFC_NODELIST entry. This
 169  * routine effectively results in a "software abort".
 170  */
 171 int
 172 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 173         int send_abts)
 174 {
 175         struct lpfc_sli *psli;
 176         struct lpfc_sli_ring *pring;
 177         struct lpfc_iocbq *iocb, *next_iocb;
 178         IOCB_t *icmd;
 179         int    found = 0;
 180
 181         /* Abort outstanding I/O on NPort <nlp_DID> */
 182         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 183                         "%d:0201 Abort outstanding I/O on NPort x%x "
 184                         "Data: x%x x%x x%x\n",
 185                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 186                         ndlp->nlp_state, ndlp->nlp_rpi);
 187
 188         psli = &phba->sli;
 189         pring = &psli->ring[LPFC_ELS_RING];
 190
 191         /* First check the txq */
 192         do {
 193                 found = 0;
 194                 spin_lock_irq(phba->host->host_lock);
 195                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 196                         /* Check to see if iocb matches the nport we are looking
 197                            for */
 198                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 199                                 found = 1;
 200                                 /* It matches, so deque and call compl with an
 201                                    error */
 202                                 list_del(&iocb->list);
 203                                 pring->txq_cnt--;
 204                                 if (iocb->iocb_cmpl) {
 205                                         icmd = &iocb->iocb;
 206                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 207                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 208                                         spin_unlock_irq(phba->host->host_lock);
 209                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 210                                         spin_lock_irq(phba->host->host_lock);
 211                                 } else
 212                                         lpfc_sli_release_iocbq(phba, iocb);
 213                                 break;
 214                         }
 215                 }
 216                 spin_unlock_irq(phba->host->host_lock);
 217         } while (found);
 218
 219         /* Everything on txcmplq will be returned by firmware
 220          * with a no rpi / linkdown / abort error.  For ring 0,
 221          * ELS discovery, we want to get rid of it right here.
 222          */
 223         /* Next check the txcmplq */
 224         do {
 225                 found = 0;
 226                 spin_lock_irq(phba->host->host_lock);
 227                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 228                                          list) {
 229                         /* Check to see if iocb matches the nport we are looking
 230                            for */
 231                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 232                                 found = 1;
 233                                 /* It matches, so deque and call compl with an
 234                                    error */
 235                                 list_del(&iocb->list);
 236                                 pring->txcmplq_cnt--;
 237
 238                                 icmd = &iocb->iocb;
 239                                 /* If the driver is completing an ELS
 240                                  * command early, flush it out of the firmware.
 241                                  */
 242                                 if (send_abts &&
 243                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 244                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 245                                         lpfc_sli_issue_abort_iotag32(phba,
 246                                                              pring, iocb);
 247                                 }
 248                                 if (iocb->iocb_cmpl) {
 249                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 250                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 251                                         spin_unlock_irq(phba->host->host_lock);
 252                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 253                                         spin_lock_irq(phba->host->host_lock);
 254                                 } else
 255                                         lpfc_sli_release_iocbq(phba, iocb);
 256                                 break;
 257                         }
 258                 }
 259                 spin_unlock_irq(phba->host->host_lock);
 260         } while(found);
 261
 262         /* If we are delaying issuing an ELS command, cancel it */
 263         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
 264                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 265                 del_timer_sync(&ndlp->nlp_delayfunc);
 266                 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
 267                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 268         }
 269         return (0);
 270 }
 271
 272 static int
 273 lpfc_rcv_plogi(struct lpfc_hba * phba,
 274                       struct lpfc_nodelist * ndlp,
 275                       struct lpfc_iocbq *cmdiocb)
 276 {
 277         struct lpfc_dmabuf *pcmd;
 278         uint32_t *lp;
 279         IOCB_t *icmd;
 280         struct serv_parm *sp;
 281         LPFC_MBOXQ_t *mbox;
 282         struct ls_rjt stat;
 283         int rc;
 284
 285         memset(&stat, 0, sizeof (struct ls_rjt));
 286         if (phba->hba_state <= LPFC_FLOGI) {
 287                 /* Before responding to PLOGI, check for pt2pt mode.
 288                  * If we are pt2pt, with an outstanding FLOGI, abort
 289                  * the FLOGI and resend it first.
 290                  */
 291                 if (phba->fc_flag & FC_PT2PT) {
 292                         lpfc_els_abort_flogi(phba);
 293                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 294                                 /* If the other side is supposed to initiate
 295                                  * the PLOGI anyway, just ACC it now and
 296                                  * move on with discovery.
 297                                  */
 298                                 phba->fc_edtov = FF_DEF_EDTOV;
 299                                 phba->fc_ratov = FF_DEF_RATOV;
 300                                 /* Start discovery - this should just do
 301                                    CLEAR_LA */
 302                                 lpfc_disc_start(phba);
 303                         }
 304                         else {
 305                                 lpfc_initial_flogi(phba);
 306                         }
 307                 }
 308                 else {
 309                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 310                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 311                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 312                                             ndlp);
 313                         return 0;
 314                 }
 315         }
 316         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 317         lp = (uint32_t *) pcmd->virt;
 318         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 319         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 320                 /* Reject this request because invalid parameters */
 321                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 322                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 323                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 324                 return (0);
 325         }
 326         icmd = &cmdiocb->iocb;
 327
 328         /* PLOGI chkparm OK */
 329         lpfc_printf_log(phba,
 330                         KERN_INFO,
 331                         LOG_ELS,
 332                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 333                         phba->brd_no,
 334                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 335                         ndlp->nlp_rpi);
 336
 337         if ((phba->cfg_fcp_class == 2) &&
 338             (sp->cls2.classValid)) {
 339                 ndlp->nlp_fcp_info |= CLASS2;
 340         } else {
 341                 ndlp->nlp_fcp_info |= CLASS3;
 342         }
 343         ndlp->nlp_class_sup = 0;
 344         if (sp->cls1.classValid)
 345                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 346         if (sp->cls2.classValid)
 347                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 348         if (sp->cls3.classValid)
 349                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 350         if (sp->cls4.classValid)
 351                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 352         ndlp->nlp_maxframe =
 353                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 354
 355         /* no need to reg_login if we are already in one of these states */
 356         switch(ndlp->nlp_state) {
 357         case  NLP_STE_NPR_NODE:
 358                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 359                         break;
 360         case  NLP_STE_REG_LOGIN_ISSUE:
 361         case  NLP_STE_PRLI_ISSUE:
 362         case  NLP_STE_UNMAPPED_NODE:
 363         case  NLP_STE_MAPPED_NODE:
 364                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 365                 return (1);
 366         }
 367
 368         if ((phba->fc_flag & FC_PT2PT)
 369             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 370                 /* rcv'ed PLOGI decides what our NPortId will be */
 371                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 372                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 373                 if (mbox == NULL)
 374                         goto out;
 375                 lpfc_config_link(phba, mbox);
 376                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 377                 rc = lpfc_sli_issue_mbox
 378                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 379                 if (rc == MBX_NOT_FINISHED) {
 380                         mempool_free( mbox, phba->mbox_mem_pool);
 381                         goto out;
 382                 }
 383
 384                 lpfc_can_disctmo(phba);
 385         }
 386         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 387         if (mbox == NULL)
 388                 goto out;
 389
 390         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 391                            (uint8_t *) sp, mbox, 0)) {
 392                 mempool_free( mbox, phba->mbox_mem_pool);
 393                 goto out;
 394         }
 395
 396         /* ACC PLOGI rsp command needs to execute first,
 397          * queue this mbox command to be processed later.
 398          */
 399         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 400         mbox->context2  = ndlp;
 401         ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
 402
 403         /* If there is an outstanding PLOGI issued, abort it before
 404          * sending ACC rsp to PLOGI recieved.
 405          */
 406         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 407                 /* software abort outstanding PLOGI */
 408                 lpfc_els_abort(phba, ndlp, 1);
 409         }
 410         ndlp->nlp_flag |= NLP_RCV_PLOGI;
 411         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 412         return (1);
 413
 414 out:
 415         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 416         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 417         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 418         return (0);
 419 }
 420
 421 static int
 422 lpfc_rcv_padisc(struct lpfc_hba * phba,
 423                 struct lpfc_nodelist * ndlp,
 424                 struct lpfc_iocbq *cmdiocb)
 425 {
 426         struct lpfc_dmabuf *pcmd;
 427         struct serv_parm *sp;
 428         struct lpfc_name *pnn, *ppn;
 429         struct ls_rjt stat;
 430         ADISC *ap;
 431         IOCB_t *icmd;
 432         uint32_t *lp;
 433         uint32_t cmd;
 434
 435         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 436         lp = (uint32_t *) pcmd->virt;
 437
 438         cmd = *lp++;
 439         if (cmd == ELS_CMD_ADISC) {
 440                 ap = (ADISC *) lp;
 441                 pnn = (struct lpfc_name *) & ap->nodeName;
 442                 ppn = (struct lpfc_name *) & ap->portName;
 443         } else {
 444                 sp = (struct serv_parm *) lp;
 445                 pnn = (struct lpfc_name *) & sp->nodeName;
 446                 ppn = (struct lpfc_name *) & sp->portName;
 447         }
 448
 449         icmd = &cmdiocb->iocb;
 450         if ((icmd->ulpStatus == 0) &&
 451             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 452                 if (cmd == ELS_CMD_ADISC) {
 453                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 454                 }
 455                 else {
 456                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 457                                 NULL, 0);
 458                 }
 459                 return (1);
 460         }
 461         /* Reject this request because invalid parameters */
 462         stat.un.b.lsRjtRsvd0 = 0;
 463         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 464         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 465         stat.un.b.vendorUnique = 0;
 466         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 467
 468         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 469         /* 1 sec timeout */
 470         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 471
 472         spin_lock_irq(phba->host->host_lock);
 473         ndlp->nlp_flag |= NLP_DELAY_TMO;
 474         spin_unlock_irq(phba->host->host_lock);
 475         ndlp->nlp_state = NLP_STE_NPR_NODE;
 476         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 477         return (0);
 478 }
 479
 480 static int
 481 lpfc_rcv_logo(struct lpfc_hba * phba,
 482                       struct lpfc_nodelist * ndlp,
 483                       struct lpfc_iocbq *cmdiocb)
 484 {
 485         /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
 486         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 487          * PLOGIs during LOGO storms from a device.
 488          */
 489         ndlp->nlp_flag |= NLP_LOGO_ACC;
 490         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 491
 492         if (!(ndlp->nlp_type & NLP_FABRIC)) {
 493                 /* Only try to re-login if this is NOT a Fabric Node */
 494                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 495                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 496                 spin_lock_irq(phba->host->host_lock);
 497                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 498                 spin_unlock_irq(phba->host->host_lock);
 499         }
 500
 501         ndlp->nlp_state = NLP_STE_NPR_NODE;
 502         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 503
 504         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 505         /* The driver has to wait until the ACC completes before it continues
 506          * processing the LOGO.  The action will resume in
 507          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 508          * unreg_login, the driver waits so the ACC does not get aborted.
 509          */
 510         return (0);
 511 }
 512
 513 static void
 514 lpfc_rcv_prli(struct lpfc_hba * phba,
 515                       struct lpfc_nodelist * ndlp,
 516                       struct lpfc_iocbq *cmdiocb)
 517 {
 518         struct lpfc_dmabuf *pcmd;
 519         uint32_t *lp;
 520         PRLI *npr;
 521         struct fc_rport *rport = ndlp->rport;
 522         u32 roles;
 523
 524         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 525         lp = (uint32_t *) pcmd->virt;
 526         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 527
 528         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 529         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 530         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 531             (npr->prliType == PRLI_FCP_TYPE)) {
 532                 if (npr->initiatorFunc)
 533                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 534                 if (npr->targetFunc)
 535                         ndlp->nlp_type |= NLP_FCP_TARGET;
 536                 if (npr->Retry)
 537                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 538         }
 539         if (rport) {
 540                 /* We need to update the rport role values */
 541                 roles = FC_RPORT_ROLE_UNKNOWN;
 542                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 543                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 544                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 545                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 546                 fc_remote_port_rolechg(rport, roles);
 547         }
 548 }
 549
 550 static uint32_t
 551 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 552                       struct lpfc_nodelist * ndlp)
 553 {
 554         /* Check config parameter use-adisc or FCP-2 */
 555         if ((phba->cfg_use_adisc == 0) &&
 556                 !(phba->fc_flag & FC_RSCN_MODE)) {
 557                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 558                         return (0);
 559         }
 560         spin_lock_irq(phba->host->host_lock);
 561         ndlp->nlp_flag |= NLP_NPR_ADISC;
 562         spin_unlock_irq(phba->host->host_lock);
 563         return (1);
 564 }
 565
 566 static uint32_t
 567 lpfc_disc_noop(struct lpfc_hba * phba,
 568                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 569 {
 570         /* This routine does nothing, just return the current state */
 571         return (ndlp->nlp_state);
 572 }
 573
 574 static uint32_t
 575 lpfc_disc_illegal(struct lpfc_hba * phba,
 576                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 577 {
 578         lpfc_printf_log(phba,
 579                         KERN_ERR,
 580                         LOG_DISCOVERY,
 581                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 582                         "state x%x Data: x%x x%x\n",
 583                         phba->brd_no,
 584                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 585                         ndlp->nlp_flag);
 586         return (ndlp->nlp_state);
 587 }
 588
 589 /* Start of Discovery State Machine routines */
 590
 591 static uint32_t
 592 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 593                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 594 {
 595         struct lpfc_iocbq *cmdiocb;
 596
 597         cmdiocb = (struct lpfc_iocbq *) arg;
 598
 599         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 600                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 601                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 602                 return (ndlp->nlp_state);
 603         }
 604         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 605         return (NLP_STE_FREED_NODE);
 606 }
 607
 608 static uint32_t
 609 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 610                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 611 {
 612         lpfc_issue_els_logo(phba, ndlp, 0);
 613         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 614         return (ndlp->nlp_state);
 615 }
 616
 617 static uint32_t
 618 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 619                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 620 {
 621         struct lpfc_iocbq     *cmdiocb;
 622
 623         cmdiocb = (struct lpfc_iocbq *) arg;
 624
 625         spin_lock_irq(phba->host->host_lock);
 626         ndlp->nlp_flag |= NLP_LOGO_ACC;
 627         spin_unlock_irq(phba->host->host_lock);
 628         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 629         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 630
 631         return (ndlp->nlp_state);
 632 }
 633
 634 static uint32_t
 635 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 636                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 637 {
 638         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 639         return (NLP_STE_FREED_NODE);
 640 }
 641
 642 static uint32_t
 643 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 644                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 645 {
 646         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 647         return (NLP_STE_FREED_NODE);
 648 }
 649
 650 static uint32_t
 651 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 652                            void *arg, uint32_t evt)
 653 {
 654         struct lpfc_iocbq *cmdiocb = arg;
 655         struct lpfc_dmabuf *pcmd;
 656         struct serv_parm *sp;
 657         uint32_t *lp;
 658         struct ls_rjt stat;
 659         int port_cmp;
 660
 661         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 662         lp = (uint32_t *) pcmd->virt;
 663         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 664
 665         memset(&stat, 0, sizeof (struct ls_rjt));
 666
 667         /* For a PLOGI, we only accept if our portname is less
 668          * than the remote portname.
 669          */
 670         phba->fc_stat.elsLogiCol++;
 671         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 672                           sizeof (struct lpfc_name));
 673
 674         if (port_cmp >= 0) {
 675                 /* Reject this request because the remote node will accept
 676                    ours */
 677                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 678                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 679                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 680         }
 681         else {
 682                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 683         } /* if our portname was less */
 684
 685         return (ndlp->nlp_state);
 686 }
 687
 688 static uint32_t
 689 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 690                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 691 {
 692         struct lpfc_iocbq     *cmdiocb;
 693
 694         cmdiocb = (struct lpfc_iocbq *) arg;
 695
 696         /* software abort outstanding PLOGI */
 697         lpfc_els_abort(phba, ndlp, 1);
 698         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 699         spin_lock_irq(phba->host->host_lock);
 700         ndlp->nlp_flag |= NLP_DELAY_TMO;
 701         spin_unlock_irq(phba->host->host_lock);
 702
 703         if (evt == NLP_EVT_RCV_LOGO) {
 704                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 705         }
 706         else {
 707                 lpfc_issue_els_logo(phba, ndlp, 0);
 708         }
 709
 710         /* Put ndlp in npr list set plogi timer for 1 sec */
 711         ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 712         ndlp->nlp_state = NLP_STE_NPR_NODE;
 713         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 714
 715         return (ndlp->nlp_state);
 716 }
 717
 718 static uint32_t
 719 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 720                             struct lpfc_nodelist * ndlp, void *arg,
 721                             uint32_t evt)
 722 {
 723         struct lpfc_iocbq *cmdiocb, *rspiocb;
 724         struct lpfc_dmabuf *pcmd, *prsp;
 725         uint32_t *lp;
 726         IOCB_t *irsp;
 727         struct serv_parm *sp;
 728         LPFC_MBOXQ_t *mbox;
 729
 730         cmdiocb = (struct lpfc_iocbq *) arg;
 731         rspiocb = cmdiocb->context_un.rsp_iocb;
 732
 733         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 734                 return (ndlp->nlp_state);
 735         }
 736
 737         irsp = &rspiocb->iocb;
 738
 739         if (irsp->ulpStatus)
 740                 goto out;
 741
 742         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 743
 744         prsp = list_get_first(&pcmd->list,
 745                               struct lpfc_dmabuf,
 746                               list);
 747         lp = (uint32_t *) prsp->virt;
 748
 749         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 750         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 751                 goto out;
 752
 753         /* PLOGI chkparm OK */
 754         lpfc_printf_log(phba,
 755                         KERN_INFO,
 756                         LOG_ELS,
 757                         "%d:0121 PLOGI chkparm OK "
 758                         "Data: x%x x%x x%x x%x\n",
 759                         phba->brd_no,
 760                         ndlp->nlp_DID, ndlp->nlp_state,
 761                         ndlp->nlp_flag, ndlp->nlp_rpi);
 762
 763         if ((phba->cfg_fcp_class == 2) &&
 764             (sp->cls2.classValid)) {
 765                 ndlp->nlp_fcp_info |= CLASS2;
 766         } else {
 767                 ndlp->nlp_fcp_info |= CLASS3;
 768         }
 769         ndlp->nlp_class_sup = 0;
 770         if (sp->cls1.classValid)
 771                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 772         if (sp->cls2.classValid)
 773                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 774         if (sp->cls3.classValid)
 775                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 776         if (sp->cls4.classValid)
 777                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 778         ndlp->nlp_maxframe =
 779                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 780                 sp->cmn.bbRcvSizeLsb;
 781
 782         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 783                                    GFP_KERNEL)))
 784                 goto out;
 785
 786         lpfc_unreg_rpi(phba, ndlp);
 787         if (lpfc_reg_login
 788             (phba, irsp->un.elsreq64.remoteID,
 789              (uint8_t *) sp, mbox, 0) == 0) {
 790                 /* set_slim mailbox command needs to
 791                  * execute first, queue this command to
 792                  * be processed later.
 793                  */
 794                 switch(ndlp->nlp_DID) {
 795                 case NameServer_DID:
 796                         mbox->mbox_cmpl =
 797                                 lpfc_mbx_cmpl_ns_reg_login;
 798                         break;
 799                 case FDMI_DID:
 800                         mbox->mbox_cmpl =
 801                                 lpfc_mbx_cmpl_fdmi_reg_login;
 802                         break;
 803                 default:
 804                         mbox->mbox_cmpl =
 805                                 lpfc_mbx_cmpl_reg_login;
 806                 }
 807                 mbox->context2 = ndlp;
 808                 if (lpfc_sli_issue_mbox(phba, mbox,
 809                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 810                     != MBX_NOT_FINISHED) {
 811                         ndlp->nlp_state =
 812                                 NLP_STE_REG_LOGIN_ISSUE;
 813                         lpfc_nlp_list(phba, ndlp,
 814                                       NLP_REGLOGIN_LIST);
 815                         return (ndlp->nlp_state);
 816                 }
 817                 mempool_free(mbox, phba->mbox_mem_pool);
 818         } else {
 819                 mempool_free(mbox, phba->mbox_mem_pool);
 820         }
 821
 822
 823  out:
 824         /* Free this node since the driver cannot login or has the wrong
 825            sparm */
 826         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 827         return (NLP_STE_FREED_NODE);
 828 }
 829
 830 static uint32_t
 831 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 832                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 833 {
 834         /* software abort outstanding PLOGI */
 835         lpfc_els_abort(phba, ndlp, 1);
 836
 837         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 838         return (NLP_STE_FREED_NODE);
 839 }
 840
 841 static uint32_t
 842 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 843                             struct lpfc_nodelist * ndlp, void *arg,
 844                             uint32_t evt)
 845 {
 846         /* software abort outstanding PLOGI */
 847         lpfc_els_abort(phba, ndlp, 1);
 848
 849         ndlp->nlp_state = NLP_STE_NPR_NODE;
 850         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 851         spin_lock_irq(phba->host->host_lock);
 852         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 853         spin_unlock_irq(phba->host->host_lock);
 854
 855         return (ndlp->nlp_state);
 856 }
 857
 858 static uint32_t
 859 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 860                             struct lpfc_nodelist * ndlp, void *arg,
 861                             uint32_t evt)
 862 {
 863         struct lpfc_iocbq *cmdiocb;
 864
 865         /* software abort outstanding ADISC */
 866         lpfc_els_abort(phba, ndlp, 1);
 867
 868         cmdiocb = (struct lpfc_iocbq *) arg;
 869
 870         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 871                 return (ndlp->nlp_state);
 872         }
 873         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 874         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 875         lpfc_issue_els_plogi(phba, ndlp, 0);
 876
 877         return (ndlp->nlp_state);
 878 }
 879
 880 static uint32_t
 881 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 882                             struct lpfc_nodelist * ndlp, void *arg,
 883                             uint32_t evt)
 884 {
 885         struct lpfc_iocbq *cmdiocb;
 886
 887         cmdiocb = (struct lpfc_iocbq *) arg;
 888
 889         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 890         return (ndlp->nlp_state);
 891 }
 892
 893 static uint32_t
 894 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 895                             struct lpfc_nodelist * ndlp, void *arg,
 896                             uint32_t evt)
 897 {
 898         struct lpfc_iocbq *cmdiocb;
 899
 900         cmdiocb = (struct lpfc_iocbq *) arg;
 901
 902         /* software abort outstanding ADISC */
 903         lpfc_els_abort(phba, ndlp, 0);
 904
 905         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 906         return (ndlp->nlp_state);
 907 }
 908
 909 static uint32_t
 910 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 911                             struct lpfc_nodelist * ndlp, void *arg,
 912                             uint32_t evt)
 913 {
 914         struct lpfc_iocbq *cmdiocb;
 915
 916         cmdiocb = (struct lpfc_iocbq *) arg;
 917
 918         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 919         return (ndlp->nlp_state);
 920 }
 921
 922 static uint32_t
 923 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 924                             struct lpfc_nodelist * ndlp, void *arg,
 925                             uint32_t evt)
 926 {
 927         struct lpfc_iocbq *cmdiocb;
 928
 929         cmdiocb = (struct lpfc_iocbq *) arg;
 930
 931         /* Treat like rcv logo */
 932         lpfc_rcv_logo(phba, ndlp, cmdiocb);
 933         return (ndlp->nlp_state);
 934 }
 935
 936 static uint32_t
 937 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 938                             struct lpfc_nodelist * ndlp, void *arg,
 939                             uint32_t evt)
 940 {
 941         struct lpfc_iocbq *cmdiocb, *rspiocb;
 942         IOCB_t *irsp;
 943         ADISC *ap;
 944
 945         cmdiocb = (struct lpfc_iocbq *) arg;
 946         rspiocb = cmdiocb->context_un.rsp_iocb;
 947
 948         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 949         irsp = &rspiocb->iocb;
 950
 951         if ((irsp->ulpStatus) ||
 952                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 953                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
 954                 /* 1 sec timeout */
 955                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 956                 spin_lock_irq(phba->host->host_lock);
 957                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 958                 spin_unlock_irq(phba->host->host_lock);
 959
 960                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 961                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 962
 963                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 964                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 965                 lpfc_unreg_rpi(phba, ndlp);
 966                 return (ndlp->nlp_state);
 967         }
 968         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 969                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 970                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
 971         } else {
 972                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 973                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 974         }
 975         return (ndlp->nlp_state);
 976 }
 977
 978 static uint32_t
 979 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
 980                             struct lpfc_nodelist * ndlp, void *arg,
 981                             uint32_t evt)
 982 {
 983         /* software abort outstanding ADISC */
 984         lpfc_els_abort(phba, ndlp, 1);
 985
 986         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 987         return (NLP_STE_FREED_NODE);
 988 }
 989
 990 static uint32_t
 991 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
 992                             struct lpfc_nodelist * ndlp, void *arg,
 993                             uint32_t evt)
 994 {
 995         /* software abort outstanding ADISC */
 996         lpfc_els_abort(phba, ndlp, 1);
 997
 998         ndlp->nlp_state = NLP_STE_NPR_NODE;
 999         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1000         spin_lock_irq(phba->host->host_lock);
1001         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1002         spin_unlock_irq(phba->host->host_lock);
1003
1004         lpfc_disc_set_adisc(phba, ndlp);
1005         return (ndlp->nlp_state);
1006 }
1007
1008 static uint32_t
1009 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1010                               struct lpfc_nodelist * ndlp, void *arg,
1011                               uint32_t evt)
1012 {
1013         struct lpfc_iocbq *cmdiocb;
1014
1015         cmdiocb = (struct lpfc_iocbq *) arg;
1016
1017         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1018         return (ndlp->nlp_state);
1019 }
1020
1021 static uint32_t
1022 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1023                              struct lpfc_nodelist * ndlp, void *arg,
1024                              uint32_t evt)
1025 {
1026         struct lpfc_iocbq *cmdiocb;
1027
1028         cmdiocb = (struct lpfc_iocbq *) arg;
1029
1030         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1031         return (ndlp->nlp_state);
1032 }
1033
1034 static uint32_t
1035 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1036                              struct lpfc_nodelist * ndlp, void *arg,
1037                              uint32_t evt)
1038 {
1039         struct lpfc_iocbq *cmdiocb;
1040
1041         cmdiocb = (struct lpfc_iocbq *) arg;
1042
1043         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1044         return (ndlp->nlp_state);
1045 }
1046
1047 static uint32_t
1048 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1049                                struct lpfc_nodelist * ndlp, void *arg,
1050                                uint32_t evt)
1051 {
1052         struct lpfc_iocbq *cmdiocb;
1053
1054         cmdiocb = (struct lpfc_iocbq *) arg;
1055
1056         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1057         return (ndlp->nlp_state);
1058 }
1059
1060 static uint32_t
1061 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1062                              struct lpfc_nodelist * ndlp, void *arg,
1063                              uint32_t evt)
1064 {
1065         struct lpfc_iocbq *cmdiocb;
1066
1067         cmdiocb = (struct lpfc_iocbq *) arg;
1068         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1069         return (ndlp->nlp_state);
1070 }
1071
1072 static uint32_t
1073 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1074                                   struct lpfc_nodelist * ndlp,
1075                                   void *arg, uint32_t evt)
1076 {
1077         LPFC_MBOXQ_t *pmb;
1078         MAILBOX_t *mb;
1079         uint32_t did;
1080
1081         pmb = (LPFC_MBOXQ_t *) arg;
1082         mb = &pmb->mb;
1083         did = mb->un.varWords[1];
1084         if (mb->mbxStatus) {
1085                 /* RegLogin failed */
1086                 lpfc_printf_log(phba,
1087                                 KERN_ERR,
1088                                 LOG_DISCOVERY,
1089                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1090                                 phba->brd_no,
1091                                 did, mb->mbxStatus, phba->hba_state);
1092
1093                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1094                 spin_lock_irq(phba->host->host_lock);
1095                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1096                 spin_unlock_irq(phba->host->host_lock);
1097
1098                 lpfc_issue_els_logo(phba, ndlp, 0);
1099                 /* Put ndlp in npr list set plogi timer for 1 sec */
1100                 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1101                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1102                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1103                 return (ndlp->nlp_state);
1104         }
1105
1106         ndlp->nlp_rpi = mb->un.varWords[0];
1107
1108         /* Only if we are not a fabric nport do we issue PRLI */
1109         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1110                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1111                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1112                 lpfc_issue_els_prli(phba, ndlp, 0);
1113         } else {
1114                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1115                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1116         }
1117         return (ndlp->nlp_state);
1118 }
1119
1120 static uint32_t
1121 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1122                               struct lpfc_nodelist * ndlp, void *arg,
1123                               uint32_t evt)
1124 {
1125         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1126         return (NLP_STE_FREED_NODE);
1127 }
1128
1129 static uint32_t
1130 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1131                                struct lpfc_nodelist * ndlp, void *arg,
1132                                uint32_t evt)
1133 {
1134         ndlp->nlp_state = NLP_STE_NPR_NODE;
1135         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1136         spin_lock_irq(phba->host->host_lock);
1137         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1138         spin_unlock_irq(phba->host->host_lock);
1139         return (ndlp->nlp_state);
1140 }
1141
1142 static uint32_t
1143 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1144                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1145 {
1146         struct lpfc_iocbq *cmdiocb;
1147
1148         cmdiocb = (struct lpfc_iocbq *) arg;
1149
1150         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1151         return (ndlp->nlp_state);
1152 }
1153
1154 static uint32_t
1155 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1156                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1157 {
1158         struct lpfc_iocbq *cmdiocb;
1159
1160         cmdiocb = (struct lpfc_iocbq *) arg;
1161
1162         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1163         return (ndlp->nlp_state);
1164 }
1165
1166 static uint32_t
1167 lpfc_rcv_logo_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         /* Software abort outstanding PRLI before sending acc */
1175         lpfc_els_abort(phba, ndlp, 1);
1176
1177         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1178         return (ndlp->nlp_state);
1179 }
1180
1181 static uint32_t
1182 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1183                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1184 {
1185         struct lpfc_iocbq *cmdiocb;
1186
1187         cmdiocb = (struct lpfc_iocbq *) arg;
1188
1189         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1190         return (ndlp->nlp_state);
1191 }
1192
1193 /* This routine is envoked when we rcv a PRLO request from a nport
1194  * we are logged into.  We should send back a PRLO rsp setting the
1195  * appropriate bits.
1196  * NEXT STATE = PRLI_ISSUE
1197  */
1198 static uint32_t
1199 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1200                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1201 {
1202         struct lpfc_iocbq *cmdiocb;
1203
1204         cmdiocb = (struct lpfc_iocbq *) arg;
1205         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1206         return (ndlp->nlp_state);
1207 }
1208
1209 static uint32_t
1210 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1211                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1212 {
1213         struct lpfc_iocbq *cmdiocb, *rspiocb;
1214         IOCB_t *irsp;
1215         PRLI *npr;
1216
1217         cmdiocb = (struct lpfc_iocbq *) arg;
1218         rspiocb = cmdiocb->context_un.rsp_iocb;
1219         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1220
1221         irsp = &rspiocb->iocb;
1222         if (irsp->ulpStatus) {
1223                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1224                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1225                 return (ndlp->nlp_state);
1226         }
1227
1228         /* Check out PRLI rsp */
1229         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1230         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1231         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1232             (npr->prliType == PRLI_FCP_TYPE)) {
1233                 if (npr->initiatorFunc)
1234                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1235                 if (npr->targetFunc)
1236                         ndlp->nlp_type |= NLP_FCP_TARGET;
1237                 if (npr->Retry)
1238                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1239         }
1240
1241         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1242         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1243         return (ndlp->nlp_state);
1244 }
1245
1246 /*! lpfc_device_rm_prli_issue
1247   *
1248   * \pre
1249   * \post
1250   * \param   phba
1251   * \param   ndlp
1252   * \param   arg
1253   * \param   evt
1254   * \return  uint32_t
1255   *
1256   * \b Description:
1257   *    This routine is envoked when we a request to remove a nport we are in the
1258   *    process of PRLIing. We should software abort outstanding prli, unreg
1259   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1260   *    on plogi list so it can be freed when LOGO completes.
1261   *
1262   */
1263 static uint32_t
1264 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1265                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1266 {
1267         /* software abort outstanding PRLI */
1268         lpfc_els_abort(phba, ndlp, 1);
1269
1270         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1271         return (NLP_STE_FREED_NODE);
1272 }
1273
1274
1275 /*! lpfc_device_recov_prli_issue
1276   *
1277   * \pre
1278   * \post
1279   * \param   phba
1280   * \param   ndlp
1281   * \param   arg
1282   * \param   evt
1283   * \return  uint32_t
1284   *
1285   * \b Description:
1286   *    The routine is envoked when the state of a device is unknown, like
1287   *    during a link down. We should remove the nodelist entry from the
1288   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1289   *    outstanding PRLI command, then free the node entry.
1290   */
1291 static uint32_t
1292 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1293                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1294 {
1295         /* software abort outstanding PRLI */
1296         lpfc_els_abort(phba, ndlp, 1);
1297
1298         ndlp->nlp_state = NLP_STE_NPR_NODE;
1299         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1300         spin_lock_irq(phba->host->host_lock);
1301         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1302         spin_unlock_irq(phba->host->host_lock);
1303         return (ndlp->nlp_state);
1304 }
1305
1306 static uint32_t
1307 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1308                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1309 {
1310         struct lpfc_iocbq *cmdiocb;
1311
1312         cmdiocb = (struct lpfc_iocbq *) arg;
1313
1314         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1315         return (ndlp->nlp_state);
1316 }
1317
1318 static uint32_t
1319 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1320                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1321 {
1322         struct lpfc_iocbq *cmdiocb;
1323
1324         cmdiocb = (struct lpfc_iocbq *) arg;
1325
1326         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1327         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1328         return (ndlp->nlp_state);
1329 }
1330
1331 static uint32_t
1332 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1333                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1334 {
1335         struct lpfc_iocbq *cmdiocb;
1336
1337         cmdiocb = (struct lpfc_iocbq *) arg;
1338
1339         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1340         return (ndlp->nlp_state);
1341 }
1342
1343 static uint32_t
1344 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1345                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1346 {
1347         struct lpfc_iocbq *cmdiocb;
1348
1349         cmdiocb = (struct lpfc_iocbq *) arg;
1350
1351         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1352         return (ndlp->nlp_state);
1353 }
1354
1355 static uint32_t
1356 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1357                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1358 {
1359         struct lpfc_iocbq *cmdiocb;
1360
1361         cmdiocb = (struct lpfc_iocbq *) arg;
1362
1363         /* Treat like rcv logo */
1364         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1365         return (ndlp->nlp_state);
1366 }
1367
1368 static uint32_t
1369 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1370                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1371 {
1372         ndlp->nlp_state = NLP_STE_NPR_NODE;
1373         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1374         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1375         lpfc_disc_set_adisc(phba, ndlp);
1376
1377         return (ndlp->nlp_state);
1378 }
1379
1380 static uint32_t
1381 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1382                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1383 {
1384         struct lpfc_iocbq *cmdiocb;
1385
1386         cmdiocb = (struct lpfc_iocbq *) arg;
1387
1388         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1389         return (ndlp->nlp_state);
1390 }
1391
1392 static uint32_t
1393 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1394                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1395 {
1396         struct lpfc_iocbq *cmdiocb;
1397
1398         cmdiocb = (struct lpfc_iocbq *) arg;
1399
1400         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1401         return (ndlp->nlp_state);
1402 }
1403
1404 static uint32_t
1405 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1406                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1407 {
1408         struct lpfc_iocbq *cmdiocb;
1409
1410         cmdiocb = (struct lpfc_iocbq *) arg;
1411
1412         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1413         return (ndlp->nlp_state);
1414 }
1415
1416 static uint32_t
1417 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1418                             struct lpfc_nodelist * ndlp, void *arg,
1419                             uint32_t evt)
1420 {
1421         struct lpfc_iocbq *cmdiocb;
1422
1423         cmdiocb = (struct lpfc_iocbq *) arg;
1424
1425         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1426         return (ndlp->nlp_state);
1427 }
1428
1429 static uint32_t
1430 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1431                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1432 {
1433         struct lpfc_iocbq *cmdiocb;
1434
1435         cmdiocb = (struct lpfc_iocbq *) arg;
1436
1437         /* flush the target */
1438         spin_lock_irq(phba->host->host_lock);
1439         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1440                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1441         spin_unlock_irq(phba->host->host_lock);
1442
1443         /* Treat like rcv logo */
1444         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1445         return (ndlp->nlp_state);
1446 }
1447
1448 static uint32_t
1449 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1450                             struct lpfc_nodelist * ndlp, void *arg,
1451                             uint32_t evt)
1452 {
1453         ndlp->nlp_state = NLP_STE_NPR_NODE;
1454         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1455         spin_lock_irq(phba->host->host_lock);
1456         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1457         spin_unlock_irq(phba->host->host_lock);
1458         lpfc_disc_set_adisc(phba, ndlp);
1459         return (ndlp->nlp_state);
1460 }
1461
1462 static uint32_t
1463 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1464                             struct lpfc_nodelist * ndlp, void *arg,
1465                             uint32_t evt)
1466 {
1467         struct lpfc_iocbq *cmdiocb;
1468
1469         cmdiocb = (struct lpfc_iocbq *) arg;
1470
1471         /* Ignore PLOGI if we have an outstanding LOGO */
1472         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1473                 return (ndlp->nlp_state);
1474         }
1475
1476         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1477                 spin_lock_irq(phba->host->host_lock);
1478                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1479                 spin_unlock_irq(phba->host->host_lock);
1480                 return (ndlp->nlp_state);
1481         }
1482
1483         /* send PLOGI immediately, move to PLOGI issue state */
1484         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1485                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1486                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1487                         lpfc_issue_els_plogi(phba, ndlp, 0);
1488         }
1489         return (ndlp->nlp_state);
1490 }
1491
1492 static uint32_t
1493 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1494                             struct lpfc_nodelist * ndlp, void *arg,
1495                             uint32_t evt)
1496 {
1497         struct lpfc_iocbq     *cmdiocb;
1498         struct ls_rjt          stat;
1499
1500         cmdiocb = (struct lpfc_iocbq *) arg;
1501
1502         memset(&stat, 0, sizeof (struct ls_rjt));
1503         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1504         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1505         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1506
1507         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1508                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1509                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1510                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1511                         lpfc_issue_els_adisc(phba, ndlp, 0);
1512                 } else {
1513                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1514                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1515                         lpfc_issue_els_plogi(phba, ndlp, 0);
1516                 }
1517         }
1518         return (ndlp->nlp_state);
1519 }
1520
1521 static uint32_t
1522 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1523                             struct lpfc_nodelist * ndlp, void *arg,
1524                             uint32_t evt)
1525 {
1526         struct lpfc_iocbq     *cmdiocb;
1527
1528         cmdiocb = (struct lpfc_iocbq *) arg;
1529
1530         lpfc_rcv_logo(phba, ndlp, cmdiocb);
1531         return (ndlp->nlp_state);
1532 }
1533
1534 static uint32_t
1535 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1536                             struct lpfc_nodelist * ndlp, void *arg,
1537                             uint32_t evt)
1538 {
1539         struct lpfc_iocbq     *cmdiocb;
1540
1541         cmdiocb = (struct lpfc_iocbq *) arg;
1542
1543         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1544
1545         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1546                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1547                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1548                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1549                         lpfc_issue_els_adisc(phba, ndlp, 0);
1550                 } else {
1551                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1552                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1553                         lpfc_issue_els_plogi(phba, ndlp, 0);
1554                 }
1555         }
1556         return (ndlp->nlp_state);
1557 }
1558
1559 static uint32_t
1560 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1561                             struct lpfc_nodelist * ndlp, void *arg,
1562                             uint32_t evt)
1563 {
1564         struct lpfc_iocbq     *cmdiocb;
1565
1566         cmdiocb = (struct lpfc_iocbq *) arg;
1567
1568         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1569
1570         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1571                 if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
1572                         return (ndlp->nlp_state);
1573                 } else {
1574                         spin_lock_irq(phba->host->host_lock);
1575                         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1576                         spin_unlock_irq(phba->host->host_lock);
1577                         del_timer_sync(&ndlp->nlp_delayfunc);
1578                         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1579                                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1580                 }
1581         }
1582
1583         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1584         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1585         lpfc_issue_els_plogi(phba, ndlp, 0);
1586         return (ndlp->nlp_state);
1587 }
1588
1589 static uint32_t
1590 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1591                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1592 {
1593         lpfc_unreg_rpi(phba, ndlp);
1594         /* This routine does nothing, just return the current state */
1595         return (ndlp->nlp_state);
1596 }
1597
1598 static uint32_t
1599 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1600                             struct lpfc_nodelist * ndlp, void *arg,
1601                             uint32_t evt)
1602 {
1603         LPFC_MBOXQ_t *pmb;
1604         MAILBOX_t *mb;
1605
1606         pmb = (LPFC_MBOXQ_t *) arg;
1607         mb = &pmb->mb;
1608
1609         ndlp->nlp_rpi = mb->un.varWords[0];
1610
1611         return (ndlp->nlp_state);
1612 }
1613
1614 static uint32_t
1615 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1616                             struct lpfc_nodelist * ndlp, void *arg,
1617                             uint32_t evt)
1618 {
1619         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1620         return (NLP_STE_FREED_NODE);
1621 }
1622
1623 static uint32_t
1624 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1625                             struct lpfc_nodelist * ndlp, void *arg,
1626                             uint32_t evt)
1627 {
1628         spin_lock_irq(phba->host->host_lock);
1629         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1630         spin_unlock_irq(phba->host->host_lock);
1631         return (ndlp->nlp_state);
1632 }
1633
1634
1635 /* This next section defines the NPort Discovery State Machine */
1636
1637 /* There are 4 different double linked lists nodelist entries can reside on.
1638  * The plogi list and adisc list are used when Link Up discovery or RSCN
1639  * processing is needed. Each list holds the nodes that we will send PLOGI
1640  * or ADISC on. These lists will keep track of what nodes will be effected
1641  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1642  * The unmapped_list will contain all nodes that we have successfully logged
1643  * into at the Fibre Channel level. The mapped_list will contain all nodes
1644  * that are mapped FCP targets.
1645  */
1646 /*
1647  * The bind list is a list of undiscovered (potentially non-existent) nodes
1648  * that we have saved binding information on. This information is used when
1649  * nodes transition from the unmapped to the mapped list.
1650  */
1651 /* For UNUSED_NODE state, the node has just been allocated .
1652  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1653  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1654  * and put on the unmapped list. For ADISC processing, the node is taken off
1655  * the ADISC list and placed on either the mapped or unmapped list (depending
1656  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1657  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1658  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1659  * node, the node is taken off the unmapped list. The binding list is checked
1660  * for a valid binding, or a binding is automatically assigned. If binding
1661  * assignment is unsuccessful, the node is left on the unmapped list. If
1662  * binding assignment is successful, the associated binding list entry (if
1663  * any) is removed, and the node is placed on the mapped list.
1664  */
1665 /*
1666  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1667  * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1668  * expire, all effected nodes will receive a DEVICE_RM event.
1669  */
1670 /*
1671  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1672  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1673  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1674  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1675  * we will first process the ADISC list.  32 entries are processed initially and
1676  * ADISC is initited for each one.  Completions / Events for each node are
1677  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1678  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1679  * waiting, and the ADISC list count is identically 0, then we are done. For
1680  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1681  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1682  * list.  32 entries are processed initially and PLOGI is initited for each one.
1683  * Completions / Events for each node are funnelled thru the state machine.  As
1684  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1685  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1686  * indentically 0, then we are done. We have now completed discovery / RSCN
1687  * handling. Upon completion, ALL nodes should be on either the mapped or
1688  * unmapped lists.
1689  */
1690
1691 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1692      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1693         /* Action routine                  Event       Current State  */
1694         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1695         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1696         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1697         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1698         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1699         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1700         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1701         lpfc_disc_illegal,              /* CMPL_PRLI       */
1702         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1703         lpfc_disc_illegal,              /* CMPL_ADISC      */
1704         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1705         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1706         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1707
1708         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1709         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1710         lpfc_rcv_els_plogi_issue,       /* RCV_LOGO        */
1711         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1712         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1713         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1714         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1715         lpfc_disc_illegal,              /* CMPL_PRLI       */
1716         lpfc_disc_illegal,              /* CMPL_LOGO       */
1717         lpfc_disc_illegal,              /* CMPL_ADISC      */
1718         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1719         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1720         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1721
1722         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1723         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1724         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1725         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1726         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1727         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1728         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1729         lpfc_disc_illegal,              /* CMPL_PRLI       */
1730         lpfc_disc_illegal,              /* CMPL_LOGO       */
1731         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1732         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1733         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1734         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1735
1736         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1737         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1738         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1739         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1740         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1741         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1742         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1743         lpfc_disc_illegal,              /* CMPL_PRLI       */
1744         lpfc_disc_illegal,              /* CMPL_LOGO       */
1745         lpfc_disc_illegal,              /* CMPL_ADISC      */
1746         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1747         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1748         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1749
1750         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1751         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1752         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1753         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1754         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1755         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1756         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1757         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1758         lpfc_disc_illegal,              /* CMPL_LOGO       */
1759         lpfc_disc_illegal,              /* CMPL_ADISC      */
1760         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1761         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1762         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1763
1764         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1765         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1766         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1767         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1768         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1769         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1770         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1771         lpfc_disc_illegal,              /* CMPL_PRLI       */
1772         lpfc_disc_illegal,              /* CMPL_LOGO       */
1773         lpfc_disc_illegal,              /* CMPL_ADISC      */
1774         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1775         lpfc_disc_illegal,              /* DEVICE_RM       */
1776         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1777
1778         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1779         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1780         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1781         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1782         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1783         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1784         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1785         lpfc_disc_illegal,              /* CMPL_PRLI       */
1786         lpfc_disc_illegal,              /* CMPL_LOGO       */
1787         lpfc_disc_illegal,              /* CMPL_ADISC      */
1788         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1789         lpfc_disc_illegal,              /* DEVICE_RM       */
1790         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1791
1792         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1793         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1794         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1795         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1796         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1797         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1798         lpfc_disc_noop,                 /* CMPL_PLOGI      */
1799         lpfc_disc_noop,                 /* CMPL_PRLI       */
1800         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1801         lpfc_disc_noop,                 /* CMPL_ADISC      */
1802         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1803         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1804         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1805 };
1806
1807 int
1808 lpfc_disc_state_machine(struct lpfc_hba * phba,
1809                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1810 {
1811         uint32_t cur_state, rc;
1812         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1813                          uint32_t);
1814
1815         ndlp->nlp_disc_refcnt++;
1816         cur_state = ndlp->nlp_state;
1817
1818         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1819         lpfc_printf_log(phba,
1820                         KERN_INFO,
1821                         LOG_DISCOVERY,
1822                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1823                         "Data: x%x\n",
1824                         phba->brd_no,
1825                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1826
1827         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1828         rc = (func) (phba, ndlp, arg, evt);
1829
1830         /* DSM out state <rc> on NPort <nlp_DID> */
1831         lpfc_printf_log(phba,
1832                        KERN_INFO,
1833                        LOG_DISCOVERY,
1834                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1835                        phba->brd_no,
1836                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1837
1838         ndlp->nlp_disc_refcnt--;
1839
1840         /* Check to see if ndlp removal is deferred */
1841         if ((ndlp->nlp_disc_refcnt == 0)
1842             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1843                 spin_lock_irq(phba->host->host_lock);
1844                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1845                 spin_unlock_irq(phba->host->host_lock);
1846                 lpfc_nlp_remove(phba, ndlp);
1847                 return (NLP_STE_FREED_NODE);
1848         }
1849         if (rc == NLP_STE_FREED_NODE)
1850                 return (NLP_STE_FREED_NODE);
1851         ndlp->nlp_state = rc;
1852         return (rc);
1853 }