drivers/scsi/lpfc/lpfc_nportdisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <scsi/scsi.h>
  27 #include <scsi/scsi_device.h>
  28 #include <scsi/scsi_host.h>
  29 #include <scsi/scsi_transport_fc.h>
  30
  31 #include "lpfc_hw.h"
  32 #include "lpfc_sli.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_scsi.h"
  35 #include "lpfc.h"
  36 #include "lpfc_logmsg.h"
  37 #include "lpfc_crtn.h"
  38
  39
  40 /* Called to verify a rcv'ed ADISC was intended for us. */
  41 static int
  42 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
  43                  struct lpfc_name * nn, struct lpfc_name * pn)
  44 {
  45         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  46          * table entry for that node.
  47          */
  48         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
  49                 return 0;
  50
  51         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
  52                 return 0;
  53
  54         /* we match, return success */
  55         return 1;
  56 }
  57
  58 int
  59 lpfc_check_sparm(struct lpfc_hba * phba,
  60                  struct lpfc_nodelist * ndlp, struct serv_parm * sp,
  61                  uint32_t class)
  62 {
  63         volatile struct serv_parm *hsp = &phba->fc_sparam;
  64         uint16_t hsp_value, ssp_value = 0;
  65
  66         /*
  67          * The receive data field size and buffer-to-buffer receive data field
  68          * size entries are 16 bits but are represented as two 8-bit fields in
  69          * the driver data structure to account for rsvd bits and other control
  70          * bits.  Reconstruct and compare the fields as a 16-bit values before
  71          * correcting the byte values.
  72          */
  73         if (sp->cls1.classValid) {
  74                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  75                                 hsp->cls1.rcvDataSizeLsb;
  76                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  77                                 sp->cls1.rcvDataSizeLsb;
  78                 if (ssp_value > hsp_value) {
  79                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  80                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  81                 }
  82         } else if (class == CLASS1) {
  83                 return 0;
  84         }
  85
  86         if (sp->cls2.classValid) {
  87                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  88                                 hsp->cls2.rcvDataSizeLsb;
  89                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  90                                 sp->cls2.rcvDataSizeLsb;
  91                 if (ssp_value > hsp_value) {
  92                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  93                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  94                 }
  95         } else if (class == CLASS2) {
  96                 return 0;
  97         }
  98
  99         if (sp->cls3.classValid) {
 100                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 101                                 hsp->cls3.rcvDataSizeLsb;
 102                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 103                                 sp->cls3.rcvDataSizeLsb;
 104                 if (ssp_value > hsp_value) {
 105                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 106                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 107                 }
 108         } else if (class == CLASS3) {
 109                 return 0;
 110         }
 111
 112         /*
 113          * Preserve the upper four bits of the MSB from the PLOGI response.
 114          * These bits contain the Buffer-to-Buffer State Change Number
 115          * from the target and need to be passed to the FW.
 116          */
 117         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 118         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 119         if (ssp_value > hsp_value) {
 120                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 121                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 122                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 123         }
 124
 125         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 126         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 127         return 1;
 128 }
 129
 130 static void *
 131 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
 132                       struct lpfc_iocbq *cmdiocb,
 133                       struct lpfc_iocbq *rspiocb)
 134 {
 135         struct lpfc_dmabuf *pcmd, *prsp;
 136         uint32_t *lp;
 137         void     *ptr = NULL;
 138         IOCB_t   *irsp;
 139
 140         irsp = &rspiocb->iocb;
 141         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 142
 143         /* For lpfc_els_abort, context2 could be zero'ed to delay
 144          * freeing associated memory till after ABTS completes.
 145          */
 146         if (pcmd) {
 147                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 148                                        list);
 149                 if (prsp) {
 150                         lp = (uint32_t *) prsp->virt;
 151                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 152                 }
 153         } else {
 154                 /* Force ulpStatus error since we are returning NULL ptr */
 155                 if (!(irsp->ulpStatus)) {
 156                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 157                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 158                 }
 159                 ptr = NULL;
 160         }
 161         return ptr;
 162 }
 163
 164
 165 /*
 166  * Free resources / clean up outstanding I/Os
 167  * associated with a LPFC_NODELIST entry. This
 168  * routine effectively results in a "software abort".
 169  */
 170 int
 171 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 172         int send_abts)
 173 {
 174         struct lpfc_sli *psli;
 175         struct lpfc_sli_ring *pring;
 176         struct lpfc_iocbq *iocb, *next_iocb;
 177         IOCB_t *icmd;
 178         int    found = 0;
 179
 180         /* Abort outstanding I/O on NPort <nlp_DID> */
 181         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 182                         "%d:0205 Abort outstanding I/O on NPort x%x "
 183                         "Data: x%x x%x x%x\n",
 184                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
 185                         ndlp->nlp_state, ndlp->nlp_rpi);
 186
 187         psli = &phba->sli;
 188         pring = &psli->ring[LPFC_ELS_RING];
 189
 190         /* First check the txq */
 191         do {
 192                 found = 0;
 193                 spin_lock_irq(phba->host->host_lock);
 194                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 195                         /* Check to see if iocb matches the nport we are looking
 196                            for */
 197                         if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
 198                                 found = 1;
 199                                 /* It matches, so deque and call compl with an
 200                                    error */
 201                                 list_del(&iocb->list);
 202                                 pring->txq_cnt--;
 203                                 if (iocb->iocb_cmpl) {
 204                                         icmd = &iocb->iocb;
 205                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 206                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 207                                         spin_unlock_irq(phba->host->host_lock);
 208                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 209                                         spin_lock_irq(phba->host->host_lock);
 210                                 } else
 211                                         lpfc_sli_release_iocbq(phba, iocb);
 212                                 break;
 213                         }
 214                 }
 215                 spin_unlock_irq(phba->host->host_lock);
 216         } while (found);
 217
 218         /* Everything on txcmplq will be returned by firmware
 219          * with a no rpi / linkdown / abort error.  For ring 0,
 220          * ELS discovery, we want to get rid of it right here.
 221          */
 222         /* Next check the txcmplq */
 223         do {
 224                 found = 0;
 225                 spin_lock_irq(phba->host->host_lock);
 226                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
 227                                          list) {
 228                         /* Check to see if iocb matches the nport we are looking
 229                            for */
 230                         if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
 231                                 found = 1;
 232                                 /* It matches, so deque and call compl with an
 233                                    error */
 234                                 list_del(&iocb->list);
 235                                 pring->txcmplq_cnt--;
 236
 237                                 icmd = &iocb->iocb;
 238                                 /* If the driver is completing an ELS
 239                                  * command early, flush it out of the firmware.
 240                                  */
 241                                 if (send_abts &&
 242                                    (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
 243                                    (icmd->un.elsreq64.bdl.ulpIoTag32)) {
 244                                         lpfc_sli_issue_abort_iotag32(phba,
 245                                                              pring, iocb);
 246                                 }
 247                                 if (iocb->iocb_cmpl) {
 248                                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 249                                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 250                                         spin_unlock_irq(phba->host->host_lock);
 251                                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 252                                         spin_lock_irq(phba->host->host_lock);
 253                                 } else
 254                                         lpfc_sli_release_iocbq(phba, iocb);
 255                                 break;
 256                         }
 257                 }
 258                 spin_unlock_irq(phba->host->host_lock);
 259         } while(found);
 260
 261         /* If we are delaying issuing an ELS command, cancel it */
 262         if (ndlp->nlp_flag & NLP_DELAY_TMO)
 263                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
 264         return 0;
 265 }
 266
 267 static int
 268 lpfc_rcv_plogi(struct lpfc_hba * phba,
 269                       struct lpfc_nodelist * ndlp,
 270                       struct lpfc_iocbq *cmdiocb)
 271 {
 272         struct lpfc_dmabuf *pcmd;
 273         uint32_t *lp;
 274         IOCB_t *icmd;
 275         struct serv_parm *sp;
 276         LPFC_MBOXQ_t *mbox;
 277         struct ls_rjt stat;
 278         int rc;
 279
 280         memset(&stat, 0, sizeof (struct ls_rjt));
 281         if (phba->hba_state <= LPFC_FLOGI) {
 282                 /* Before responding to PLOGI, check for pt2pt mode.
 283                  * If we are pt2pt, with an outstanding FLOGI, abort
 284                  * the FLOGI and resend it first.
 285                  */
 286                 if (phba->fc_flag & FC_PT2PT) {
 287                         lpfc_els_abort_flogi(phba);
 288                         if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
 289                                 /* If the other side is supposed to initiate
 290                                  * the PLOGI anyway, just ACC it now and
 291                                  * move on with discovery.
 292                                  */
 293                                 phba->fc_edtov = FF_DEF_EDTOV;
 294                                 phba->fc_ratov = FF_DEF_RATOV;
 295                                 /* Start discovery - this should just do
 296                                    CLEAR_LA */
 297                                 lpfc_disc_start(phba);
 298                         } else {
 299                                 lpfc_initial_flogi(phba);
 300                         }
 301                 } else {
 302                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 303                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 304                         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
 305                                             ndlp);
 306                         return 0;
 307                 }
 308         }
 309         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 310         lp = (uint32_t *) pcmd->virt;
 311         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 312         if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
 313                 /* Reject this request because invalid parameters */
 314                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 315                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 316                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 317                 return 0;
 318         }
 319         icmd = &cmdiocb->iocb;
 320
 321         /* PLOGI chkparm OK */
 322         lpfc_printf_log(phba,
 323                         KERN_INFO,
 324                         LOG_ELS,
 325                         "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 326                         phba->brd_no,
 327                         ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 328                         ndlp->nlp_rpi);
 329
 330         if ((phba->cfg_fcp_class == 2) &&
 331             (sp->cls2.classValid)) {
 332                 ndlp->nlp_fcp_info |= CLASS2;
 333         } else {
 334                 ndlp->nlp_fcp_info |= CLASS3;
 335         }
 336         ndlp->nlp_class_sup = 0;
 337         if (sp->cls1.classValid)
 338                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 339         if (sp->cls2.classValid)
 340                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 341         if (sp->cls3.classValid)
 342                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 343         if (sp->cls4.classValid)
 344                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 345         ndlp->nlp_maxframe =
 346                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 347
 348         /* no need to reg_login if we are already in one of these states */
 349         switch (ndlp->nlp_state) {
 350         case  NLP_STE_NPR_NODE:
 351                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 352                         break;
 353         case  NLP_STE_REG_LOGIN_ISSUE:
 354         case  NLP_STE_PRLI_ISSUE:
 355         case  NLP_STE_UNMAPPED_NODE:
 356         case  NLP_STE_MAPPED_NODE:
 357                 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
 358                 return 1;
 359         }
 360
 361         if ((phba->fc_flag & FC_PT2PT)
 362             && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
 363                 /* rcv'ed PLOGI decides what our NPortId will be */
 364                 phba->fc_myDID = icmd->un.rcvels.parmRo;
 365                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 366                 if (mbox == NULL)
 367                         goto out;
 368                 lpfc_config_link(phba, mbox);
 369                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 370                 rc = lpfc_sli_issue_mbox
 371                         (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
 372                 if (rc == MBX_NOT_FINISHED) {
 373                         mempool_free( mbox, phba->mbox_mem_pool);
 374                         goto out;
 375                 }
 376
 377                 lpfc_can_disctmo(phba);
 378         }
 379         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 380         if (mbox == NULL)
 381                 goto out;
 382
 383         if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
 384                            (uint8_t *) sp, mbox, 0)) {
 385                 mempool_free( mbox, phba->mbox_mem_pool);
 386                 goto out;
 387         }
 388
 389         /* ACC PLOGI rsp command needs to execute first,
 390          * queue this mbox command to be processed later.
 391          */
 392         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 393         mbox->context2  = ndlp;
 394         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 395
 396         /*
 397          * If there is an outstanding PLOGI issued, abort it before
 398          * sending ACC rsp for received PLOGI. If pending plogi
 399          * is not canceled here, the plogi will be rejected by
 400          * remote port and will be retried. On a configuration with
 401          * single discovery thread, this will cause a huge delay in
 402          * discovery. Also this will cause multiple state machines
 403          * running in parallel for this node.
 404          */
 405         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 406                 /* software abort outstanding PLOGI */
 407                 lpfc_els_abort(phba, ndlp, 1);
 408         }
 409
 410         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
 411         return 1;
 412
 413 out:
 414         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 415         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 416         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 417         return 0;
 418 }
 419
 420 static int
 421 lpfc_rcv_padisc(struct lpfc_hba * phba,
 422                 struct lpfc_nodelist * ndlp,
 423                 struct lpfc_iocbq *cmdiocb)
 424 {
 425         struct lpfc_dmabuf *pcmd;
 426         struct serv_parm *sp;
 427         struct lpfc_name *pnn, *ppn;
 428         struct ls_rjt stat;
 429         ADISC *ap;
 430         IOCB_t *icmd;
 431         uint32_t *lp;
 432         uint32_t cmd;
 433
 434         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 435         lp = (uint32_t *) pcmd->virt;
 436
 437         cmd = *lp++;
 438         if (cmd == ELS_CMD_ADISC) {
 439                 ap = (ADISC *) lp;
 440                 pnn = (struct lpfc_name *) & ap->nodeName;
 441                 ppn = (struct lpfc_name *) & ap->portName;
 442         } else {
 443                 sp = (struct serv_parm *) lp;
 444                 pnn = (struct lpfc_name *) & sp->nodeName;
 445                 ppn = (struct lpfc_name *) & sp->portName;
 446         }
 447
 448         icmd = &cmdiocb->iocb;
 449         if ((icmd->ulpStatus == 0) &&
 450             (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
 451                 if (cmd == ELS_CMD_ADISC) {
 452                         lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
 453                 } else {
 454                         lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
 455                                 NULL, 0);
 456                 }
 457                 return 1;
 458         }
 459         /* Reject this request because invalid parameters */
 460         stat.un.b.lsRjtRsvd0 = 0;
 461         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 462         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 463         stat.un.b.vendorUnique = 0;
 464         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 465
 466         /* 1 sec timeout */
 467         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 468
 469         spin_lock_irq(phba->host->host_lock);
 470         ndlp->nlp_flag |= NLP_DELAY_TMO;
 471         spin_unlock_irq(phba->host->host_lock);
 472         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 473         ndlp->nlp_prev_state = ndlp->nlp_state;
 474         ndlp->nlp_state = NLP_STE_NPR_NODE;
 475         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 476         return 0;
 477 }
 478
 479 static int
 480 lpfc_rcv_logo(struct lpfc_hba * phba,
 481                       struct lpfc_nodelist * ndlp,
 482                       struct lpfc_iocbq *cmdiocb,
 483                       uint32_t els_cmd)
 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         if (els_cmd == ELS_CMD_PRLO)
 491                 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
 492         else
 493                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 494
 495         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 496                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 497                 /* Only try to re-login if this is NOT a Fabric Node */
 498                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 499                 spin_lock_irq(phba->host->host_lock);
 500                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 501                 spin_unlock_irq(phba->host->host_lock);
 502
 503                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 504                 ndlp->nlp_prev_state = ndlp->nlp_state;
 505                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 506                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 507         } else {
 508                 ndlp->nlp_prev_state = ndlp->nlp_state;
 509                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 510                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 511         }
 512
 513         spin_lock_irq(phba->host->host_lock);
 514         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 515         spin_unlock_irq(phba->host->host_lock);
 516         /* The driver has to wait until the ACC completes before it continues
 517          * processing the LOGO.  The action will resume in
 518          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 519          * unreg_login, the driver waits so the ACC does not get aborted.
 520          */
 521         return 0;
 522 }
 523
 524 static void
 525 lpfc_rcv_prli(struct lpfc_hba * phba,
 526                       struct lpfc_nodelist * ndlp,
 527                       struct lpfc_iocbq *cmdiocb)
 528 {
 529         struct lpfc_dmabuf *pcmd;
 530         uint32_t *lp;
 531         PRLI *npr;
 532         struct fc_rport *rport = ndlp->rport;
 533         u32 roles;
 534
 535         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 536         lp = (uint32_t *) pcmd->virt;
 537         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 538
 539         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 540         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 541         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
 542             (npr->prliType == PRLI_FCP_TYPE)) {
 543                 if (npr->initiatorFunc)
 544                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 545                 if (npr->targetFunc)
 546                         ndlp->nlp_type |= NLP_FCP_TARGET;
 547                 if (npr->Retry)
 548                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 549         }
 550         if (rport) {
 551                 /* We need to update the rport role values */
 552                 roles = FC_RPORT_ROLE_UNKNOWN;
 553                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 554                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 555                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 556                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 557                 fc_remote_port_rolechg(rport, roles);
 558         }
 559 }
 560
 561 static uint32_t
 562 lpfc_disc_set_adisc(struct lpfc_hba * phba,
 563                       struct lpfc_nodelist * ndlp)
 564 {
 565         /* Check config parameter use-adisc or FCP-2 */
 566         if ((phba->cfg_use_adisc == 0) &&
 567                 !(phba->fc_flag & FC_RSCN_MODE)) {
 568                 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
 569                         return 0;
 570         }
 571         spin_lock_irq(phba->host->host_lock);
 572         ndlp->nlp_flag |= NLP_NPR_ADISC;
 573         spin_unlock_irq(phba->host->host_lock);
 574         return 1;
 575 }
 576
 577 static uint32_t
 578 lpfc_disc_illegal(struct lpfc_hba * phba,
 579                    struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 580 {
 581         lpfc_printf_log(phba,
 582                         KERN_ERR,
 583                         LOG_DISCOVERY,
 584                         "%d:0253 Illegal State Transition: node x%x event x%x, "
 585                         "state x%x Data: x%x x%x\n",
 586                         phba->brd_no,
 587                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 588                         ndlp->nlp_flag);
 589         return ndlp->nlp_state;
 590 }
 591
 592 /* Start of Discovery State Machine routines */
 593
 594 static uint32_t
 595 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
 596                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 597 {
 598         struct lpfc_iocbq *cmdiocb;
 599
 600         cmdiocb = (struct lpfc_iocbq *) arg;
 601
 602         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 603                 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
 604                 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
 605                 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 606                 return ndlp->nlp_state;
 607         }
 608         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 609         return NLP_STE_FREED_NODE;
 610 }
 611
 612 static uint32_t
 613 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
 614                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 615 {
 616         lpfc_issue_els_logo(phba, ndlp, 0);
 617         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 618         return ndlp->nlp_state;
 619 }
 620
 621 static uint32_t
 622 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
 623                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 624 {
 625         struct lpfc_iocbq     *cmdiocb;
 626
 627         cmdiocb = (struct lpfc_iocbq *) arg;
 628
 629         spin_lock_irq(phba->host->host_lock);
 630         ndlp->nlp_flag |= NLP_LOGO_ACC;
 631         spin_unlock_irq(phba->host->host_lock);
 632         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 633         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
 634
 635         return ndlp->nlp_state;
 636 }
 637
 638 static uint32_t
 639 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
 640                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 641 {
 642         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 643         return NLP_STE_FREED_NODE;
 644 }
 645
 646 static uint32_t
 647 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
 648                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 649 {
 650         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 651         return NLP_STE_FREED_NODE;
 652 }
 653
 654 static uint32_t
 655 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
 656                            void *arg, uint32_t evt)
 657 {
 658         struct lpfc_iocbq *cmdiocb = arg;
 659         struct lpfc_dmabuf *pcmd;
 660         struct serv_parm *sp;
 661         uint32_t *lp;
 662         struct ls_rjt stat;
 663         int port_cmp;
 664
 665         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 666         lp = (uint32_t *) pcmd->virt;
 667         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 668
 669         memset(&stat, 0, sizeof (struct ls_rjt));
 670
 671         /* For a PLOGI, we only accept if our portname is less
 672          * than the remote portname.
 673          */
 674         phba->fc_stat.elsLogiCol++;
 675         port_cmp = memcmp(&phba->fc_portname, &sp->portName,
 676                           sizeof (struct lpfc_name));
 677
 678         if (port_cmp >= 0) {
 679                 /* Reject this request because the remote node will accept
 680                    ours */
 681                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 682                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 683                 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
 684         } else {
 685                 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
 686         } /* if our portname was less */
 687
 688         return ndlp->nlp_state;
 689 }
 690
 691 static uint32_t
 692 lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
 693                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 694 {
 695         struct lpfc_iocbq     *cmdiocb;
 696
 697         cmdiocb = (struct lpfc_iocbq *) arg;
 698
 699         /* software abort outstanding PLOGI */
 700         lpfc_els_abort(phba, ndlp, 1);
 701
 702         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
 703         return ndlp->nlp_state;
 704 }
 705
 706 static uint32_t
 707 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
 708                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 709 {
 710         struct lpfc_iocbq     *cmdiocb;
 711
 712         cmdiocb = (struct lpfc_iocbq *) arg;
 713
 714         /* software abort outstanding PLOGI */
 715         lpfc_els_abort(phba, ndlp, 1);
 716
 717         if (evt == NLP_EVT_RCV_LOGO) {
 718                 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
 719         } else {
 720                 lpfc_issue_els_logo(phba, ndlp, 0);
 721         }
 722
 723         /* Put ndlp in npr list set plogi timer for 1 sec */
 724         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 725         spin_lock_irq(phba->host->host_lock);
 726         ndlp->nlp_flag |= NLP_DELAY_TMO;
 727         spin_unlock_irq(phba->host->host_lock);
 728         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 729         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 730         ndlp->nlp_state = NLP_STE_NPR_NODE;
 731         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 732
 733         return ndlp->nlp_state;
 734 }
 735
 736 static uint32_t
 737 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 738                             struct lpfc_nodelist * ndlp, void *arg,
 739                             uint32_t evt)
 740 {
 741         struct lpfc_iocbq *cmdiocb, *rspiocb;
 742         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 743         uint32_t *lp;
 744         IOCB_t *irsp;
 745         struct serv_parm *sp;
 746         LPFC_MBOXQ_t *mbox;
 747
 748         cmdiocb = (struct lpfc_iocbq *) arg;
 749         rspiocb = cmdiocb->context_un.rsp_iocb;
 750
 751         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 752                 /* Recovery from PLOGI collision logic */
 753                 return ndlp->nlp_state;
 754         }
 755
 756         irsp = &rspiocb->iocb;
 757
 758         if (irsp->ulpStatus)
 759                 goto out;
 760
 761         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 762
 763         prsp = list_get_first(&pcmd->list,
 764                               struct lpfc_dmabuf,
 765                               list);
 766         lp = (uint32_t *) prsp->virt;
 767
 768         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 769         if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
 770                 goto out;
 771
 772         /* PLOGI chkparm OK */
 773         lpfc_printf_log(phba,
 774                         KERN_INFO,
 775                         LOG_ELS,
 776                         "%d:0121 PLOGI chkparm OK "
 777                         "Data: x%x x%x x%x x%x\n",
 778                         phba->brd_no,
 779                         ndlp->nlp_DID, ndlp->nlp_state,
 780                         ndlp->nlp_flag, ndlp->nlp_rpi);
 781
 782         if ((phba->cfg_fcp_class == 2) &&
 783             (sp->cls2.classValid)) {
 784                 ndlp->nlp_fcp_info |= CLASS2;
 785         } else {
 786                 ndlp->nlp_fcp_info |= CLASS3;
 787         }
 788         ndlp->nlp_class_sup = 0;
 789         if (sp->cls1.classValid)
 790                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 791         if (sp->cls2.classValid)
 792                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 793         if (sp->cls3.classValid)
 794                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 795         if (sp->cls4.classValid)
 796                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 797         ndlp->nlp_maxframe =
 798                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 799                 sp->cmn.bbRcvSizeLsb;
 800
 801         if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
 802                                    GFP_KERNEL)))
 803                 goto out;
 804
 805         lpfc_unreg_rpi(phba, ndlp);
 806         if (lpfc_reg_login
 807             (phba, irsp->un.elsreq64.remoteID,
 808              (uint8_t *) sp, mbox, 0) == 0) {
 809                 switch (ndlp->nlp_DID) {
 810                 case NameServer_DID:
 811                         mbox->mbox_cmpl =
 812                                 lpfc_mbx_cmpl_ns_reg_login;
 813                         break;
 814                 case FDMI_DID:
 815                         mbox->mbox_cmpl =
 816                                 lpfc_mbx_cmpl_fdmi_reg_login;
 817                         break;
 818                 default:
 819                         mbox->mbox_cmpl =
 820                                 lpfc_mbx_cmpl_reg_login;
 821                 }
 822                 mbox->context2 = ndlp;
 823                 if (lpfc_sli_issue_mbox(phba, mbox,
 824                                         (MBX_NOWAIT | MBX_STOP_IOCB))
 825                     != MBX_NOT_FINISHED) {
 826                         ndlp->nlp_state =
 827                                 NLP_STE_REG_LOGIN_ISSUE;
 828                         lpfc_nlp_list(phba, ndlp,
 829                                       NLP_REGLOGIN_LIST);
 830                         return ndlp->nlp_state;
 831                 }
 832                 mp = (struct lpfc_dmabuf *)mbox->context1;
 833                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 834                 kfree(mp);
 835                 mempool_free(mbox, phba->mbox_mem_pool);
 836         } else {
 837                 mempool_free(mbox, phba->mbox_mem_pool);
 838         }
 839
 840
 841  out:
 842         /* Free this node since the driver cannot login or has the wrong
 843            sparm */
 844         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 845         return NLP_STE_FREED_NODE;
 846 }
 847
 848 static uint32_t
 849 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
 850                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
 851 {
 852         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 853                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 854                 return ndlp->nlp_state;
 855         }
 856         else {
 857                 /* software abort outstanding PLOGI */
 858                 lpfc_els_abort(phba, ndlp, 1);
 859
 860                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 861                 return NLP_STE_FREED_NODE;
 862         }
 863 }
 864
 865 static uint32_t
 866 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
 867                             struct lpfc_nodelist * ndlp, void *arg,
 868                             uint32_t evt)
 869 {
 870         /* software abort outstanding PLOGI */
 871         lpfc_els_abort(phba, ndlp, 1);
 872
 873         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 874         ndlp->nlp_state = NLP_STE_NPR_NODE;
 875         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 876         spin_lock_irq(phba->host->host_lock);
 877         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
 878         spin_unlock_irq(phba->host->host_lock);
 879
 880         return ndlp->nlp_state;
 881 }
 882
 883 static uint32_t
 884 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
 885                             struct lpfc_nodelist * ndlp, void *arg,
 886                             uint32_t evt)
 887 {
 888         struct lpfc_iocbq *cmdiocb;
 889
 890         /* software abort outstanding ADISC */
 891         lpfc_els_abort(phba, ndlp, 1);
 892
 893         cmdiocb = (struct lpfc_iocbq *) arg;
 894
 895         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
 896                 return ndlp->nlp_state;
 897         }
 898         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 899         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 900         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 901         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
 902
 903         return ndlp->nlp_state;
 904 }
 905
 906 static uint32_t
 907 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
 908                             struct lpfc_nodelist * ndlp, void *arg,
 909                             uint32_t evt)
 910 {
 911         struct lpfc_iocbq *cmdiocb;
 912
 913         cmdiocb = (struct lpfc_iocbq *) arg;
 914
 915         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
 916         return ndlp->nlp_state;
 917 }
 918
 919 static uint32_t
 920 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
 921                             struct lpfc_nodelist * ndlp, void *arg,
 922                             uint32_t evt)
 923 {
 924         struct lpfc_iocbq *cmdiocb;
 925
 926         cmdiocb = (struct lpfc_iocbq *) arg;
 927
 928         /* software abort outstanding ADISC */
 929         lpfc_els_abort(phba, ndlp, 0);
 930
 931         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
 932         return ndlp->nlp_state;
 933 }
 934
 935 static uint32_t
 936 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
 937                             struct lpfc_nodelist * ndlp, void *arg,
 938                             uint32_t evt)
 939 {
 940         struct lpfc_iocbq *cmdiocb;
 941
 942         cmdiocb = (struct lpfc_iocbq *) arg;
 943
 944         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
 945         return ndlp->nlp_state;
 946 }
 947
 948 static uint32_t
 949 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
 950                             struct lpfc_nodelist * ndlp, void *arg,
 951                             uint32_t evt)
 952 {
 953         struct lpfc_iocbq *cmdiocb;
 954
 955         cmdiocb = (struct lpfc_iocbq *) arg;
 956
 957         /* Treat like rcv logo */
 958         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
 959         return ndlp->nlp_state;
 960 }
 961
 962 static uint32_t
 963 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
 964                             struct lpfc_nodelist * ndlp, void *arg,
 965                             uint32_t evt)
 966 {
 967         struct lpfc_iocbq *cmdiocb, *rspiocb;
 968         IOCB_t *irsp;
 969         ADISC *ap;
 970
 971         cmdiocb = (struct lpfc_iocbq *) arg;
 972         rspiocb = cmdiocb->context_un.rsp_iocb;
 973
 974         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 975         irsp = &rspiocb->iocb;
 976
 977         if ((irsp->ulpStatus) ||
 978                 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
 979                 /* 1 sec timeout */
 980                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 981                 spin_lock_irq(phba->host->host_lock);
 982                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 983                 spin_unlock_irq(phba->host->host_lock);
 984                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 985
 986                 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
 987                 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
 988
 989                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 990                 ndlp->nlp_state = NLP_STE_NPR_NODE;
 991                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
 992                 lpfc_unreg_rpi(phba, ndlp);
 993                 return ndlp->nlp_state;
 994         }
 995
 996         if (ndlp->nlp_type & NLP_FCP_TARGET) {
 997                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
 998                 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
 999                 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1000         } else {
1001                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1002                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1003                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1004         }
1005         return ndlp->nlp_state;
1006 }
1007
1008 static uint32_t
1009 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
1010                             struct lpfc_nodelist * ndlp, void *arg,
1011                             uint32_t evt)
1012 {
1013         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1014                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1015                 return ndlp->nlp_state;
1016         }
1017         else {
1018                 /* software abort outstanding ADISC */
1019                 lpfc_els_abort(phba, ndlp, 1);
1020
1021                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1022                 return NLP_STE_FREED_NODE;
1023         }
1024 }
1025
1026 static uint32_t
1027 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
1028                             struct lpfc_nodelist * ndlp, void *arg,
1029                             uint32_t evt)
1030 {
1031         /* software abort outstanding ADISC */
1032         lpfc_els_abort(phba, ndlp, 1);
1033
1034         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1035         ndlp->nlp_state = NLP_STE_NPR_NODE;
1036         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1037         spin_lock_irq(phba->host->host_lock);
1038         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1039         ndlp->nlp_flag |= NLP_NPR_ADISC;
1040         spin_unlock_irq(phba->host->host_lock);
1041
1042         return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1047                               struct lpfc_nodelist * ndlp, void *arg,
1048                               uint32_t evt)
1049 {
1050         struct lpfc_iocbq *cmdiocb;
1051
1052         cmdiocb = (struct lpfc_iocbq *) arg;
1053
1054         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1055         return ndlp->nlp_state;
1056 }
1057
1058 static uint32_t
1059 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1060                              struct lpfc_nodelist * ndlp, void *arg,
1061                              uint32_t evt)
1062 {
1063         struct lpfc_iocbq *cmdiocb;
1064
1065         cmdiocb = (struct lpfc_iocbq *) arg;
1066
1067         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1068         return ndlp->nlp_state;
1069 }
1070
1071 static uint32_t
1072 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1073                              struct lpfc_nodelist * ndlp, void *arg,
1074                              uint32_t evt)
1075 {
1076         struct lpfc_iocbq *cmdiocb;
1077
1078         cmdiocb = (struct lpfc_iocbq *) arg;
1079
1080         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1081         return ndlp->nlp_state;
1082 }
1083
1084 static uint32_t
1085 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1086                                struct lpfc_nodelist * ndlp, void *arg,
1087                                uint32_t evt)
1088 {
1089         struct lpfc_iocbq *cmdiocb;
1090
1091         cmdiocb = (struct lpfc_iocbq *) arg;
1092
1093         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1094         return ndlp->nlp_state;
1095 }
1096
1097 static uint32_t
1098 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1099                              struct lpfc_nodelist * ndlp, void *arg,
1100                              uint32_t evt)
1101 {
1102         struct lpfc_iocbq *cmdiocb;
1103
1104         cmdiocb = (struct lpfc_iocbq *) arg;
1105         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1106         return ndlp->nlp_state;
1107 }
1108
1109 static uint32_t
1110 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1111                                   struct lpfc_nodelist * ndlp,
1112                                   void *arg, uint32_t evt)
1113 {
1114         LPFC_MBOXQ_t *pmb;
1115         MAILBOX_t *mb;
1116         uint32_t did;
1117
1118         pmb = (LPFC_MBOXQ_t *) arg;
1119         mb = &pmb->mb;
1120         did = mb->un.varWords[1];
1121         if (mb->mbxStatus) {
1122                 /* RegLogin failed */
1123                 lpfc_printf_log(phba,
1124                                 KERN_ERR,
1125                                 LOG_DISCOVERY,
1126                                 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1127                                 phba->brd_no,
1128                                 did, mb->mbxStatus, phba->hba_state);
1129
1130                 /*
1131                  * If RegLogin failed due to lack of HBA resources do not
1132                  * retry discovery.
1133                  */
1134                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1135                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1136                         ndlp->nlp_state = NLP_STE_UNUSED_NODE;
1137                         lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
1138                         return ndlp->nlp_state;
1139                 }
1140
1141                 /* Put ndlp in npr list set plogi timer for 1 sec */
1142                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1143                 spin_lock_irq(phba->host->host_lock);
1144                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1145                 spin_unlock_irq(phba->host->host_lock);
1146                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1147
1148                 lpfc_issue_els_logo(phba, ndlp, 0);
1149                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1150                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1151                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1152                 return ndlp->nlp_state;
1153         }
1154
1155         ndlp->nlp_rpi = mb->un.varWords[0];
1156
1157         /* Only if we are not a fabric nport do we issue PRLI */
1158         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1159                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1160                 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1161                 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1162                 lpfc_issue_els_prli(phba, ndlp, 0);
1163         } else {
1164                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1165                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1166                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1167         }
1168         return ndlp->nlp_state;
1169 }
1170
1171 static uint32_t
1172 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1173                               struct lpfc_nodelist * ndlp, void *arg,
1174                               uint32_t evt)
1175 {
1176         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1177                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1178                 return ndlp->nlp_state;
1179         }
1180         else {
1181                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1182                 return NLP_STE_FREED_NODE;
1183         }
1184 }
1185
1186 static uint32_t
1187 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1188                                struct lpfc_nodelist * ndlp, void *arg,
1189                                uint32_t evt)
1190 {
1191         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1192         ndlp->nlp_state = NLP_STE_NPR_NODE;
1193         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1194         spin_lock_irq(phba->host->host_lock);
1195         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1196         spin_unlock_irq(phba->host->host_lock);
1197         return ndlp->nlp_state;
1198 }
1199
1200 static uint32_t
1201 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1202                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1203 {
1204         struct lpfc_iocbq *cmdiocb;
1205
1206         cmdiocb = (struct lpfc_iocbq *) arg;
1207
1208         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1209         return ndlp->nlp_state;
1210 }
1211
1212 static uint32_t
1213 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1214                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1215 {
1216         struct lpfc_iocbq *cmdiocb;
1217
1218         cmdiocb = (struct lpfc_iocbq *) arg;
1219
1220         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1221         return ndlp->nlp_state;
1222 }
1223
1224 static uint32_t
1225 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1226                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1227 {
1228         struct lpfc_iocbq *cmdiocb;
1229
1230         cmdiocb = (struct lpfc_iocbq *) arg;
1231
1232         /* Software abort outstanding PRLI before sending acc */
1233         lpfc_els_abort(phba, ndlp, 1);
1234
1235         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1236         return ndlp->nlp_state;
1237 }
1238
1239 static uint32_t
1240 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1241                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1242 {
1243         struct lpfc_iocbq *cmdiocb;
1244
1245         cmdiocb = (struct lpfc_iocbq *) arg;
1246
1247         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1248         return ndlp->nlp_state;
1249 }
1250
1251 /* This routine is envoked when we rcv a PRLO request from a nport
1252  * we are logged into.  We should send back a PRLO rsp setting the
1253  * appropriate bits.
1254  * NEXT STATE = PRLI_ISSUE
1255  */
1256 static uint32_t
1257 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1258                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1259 {
1260         struct lpfc_iocbq *cmdiocb;
1261
1262         cmdiocb = (struct lpfc_iocbq *) arg;
1263         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1264         return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1269                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1270 {
1271         struct lpfc_iocbq *cmdiocb, *rspiocb;
1272         IOCB_t *irsp;
1273         PRLI *npr;
1274
1275         cmdiocb = (struct lpfc_iocbq *) arg;
1276         rspiocb = cmdiocb->context_un.rsp_iocb;
1277         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1278
1279         irsp = &rspiocb->iocb;
1280         if (irsp->ulpStatus) {
1281                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1282                 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1283                 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1284                 return ndlp->nlp_state;
1285         }
1286
1287         /* Check out PRLI rsp */
1288         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1289         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1290         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1291             (npr->prliType == PRLI_FCP_TYPE)) {
1292                 if (npr->initiatorFunc)
1293                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1294                 if (npr->targetFunc)
1295                         ndlp->nlp_type |= NLP_FCP_TARGET;
1296                 if (npr->Retry)
1297                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1298         }
1299
1300         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1301         ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1302         lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1303         return ndlp->nlp_state;
1304 }
1305
1306 /*! lpfc_device_rm_prli_issue
1307   *
1308   * \pre
1309   * \post
1310   * \param   phba
1311   * \param   ndlp
1312   * \param   arg
1313   * \param   evt
1314   * \return  uint32_t
1315   *
1316   * \b Description:
1317   *    This routine is envoked when we a request to remove a nport we are in the
1318   *    process of PRLIing. We should software abort outstanding prli, unreg
1319   *    login, send a logout. We will change node state to UNUSED_NODE, put it
1320   *    on plogi list so it can be freed when LOGO completes.
1321   *
1322   */
1323 static uint32_t
1324 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1325                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1326 {
1327         if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1328                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1329                 return ndlp->nlp_state;
1330         }
1331         else {
1332                 /* software abort outstanding PLOGI */
1333                 lpfc_els_abort(phba, ndlp, 1);
1334
1335                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1336                 return NLP_STE_FREED_NODE;
1337         }
1338 }
1339
1340
1341 /*! lpfc_device_recov_prli_issue
1342   *
1343   * \pre
1344   * \post
1345   * \param   phba
1346   * \param   ndlp
1347   * \param   arg
1348   * \param   evt
1349   * \return  uint32_t
1350   *
1351   * \b Description:
1352   *    The routine is envoked when the state of a device is unknown, like
1353   *    during a link down. We should remove the nodelist entry from the
1354   *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1355   *    outstanding PRLI command, then free the node entry.
1356   */
1357 static uint32_t
1358 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1359                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1360 {
1361         /* software abort outstanding PRLI */
1362         lpfc_els_abort(phba, ndlp, 1);
1363
1364         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1365         ndlp->nlp_state = NLP_STE_NPR_NODE;
1366         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1367         spin_lock_irq(phba->host->host_lock);
1368         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1369         spin_unlock_irq(phba->host->host_lock);
1370         return ndlp->nlp_state;
1371 }
1372
1373 static uint32_t
1374 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1375                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1376 {
1377         struct lpfc_iocbq *cmdiocb;
1378
1379         cmdiocb = (struct lpfc_iocbq *) arg;
1380
1381         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1382         return ndlp->nlp_state;
1383 }
1384
1385 static uint32_t
1386 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1387                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1388 {
1389         struct lpfc_iocbq *cmdiocb;
1390
1391         cmdiocb = (struct lpfc_iocbq *) arg;
1392
1393         lpfc_rcv_prli(phba, ndlp, cmdiocb);
1394         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1395         return ndlp->nlp_state;
1396 }
1397
1398 static uint32_t
1399 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1400                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1401 {
1402         struct lpfc_iocbq *cmdiocb;
1403
1404         cmdiocb = (struct lpfc_iocbq *) arg;
1405
1406         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1407         return ndlp->nlp_state;
1408 }
1409
1410 static uint32_t
1411 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1412                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1413 {
1414         struct lpfc_iocbq *cmdiocb;
1415
1416         cmdiocb = (struct lpfc_iocbq *) arg;
1417
1418         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1419         return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1424                          struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1425 {
1426         struct lpfc_iocbq *cmdiocb;
1427
1428         cmdiocb = (struct lpfc_iocbq *) arg;
1429
1430         lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1431         return ndlp->nlp_state;
1432 }
1433
1434 static uint32_t
1435 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1436                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1437 {
1438         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1439         ndlp->nlp_state = NLP_STE_NPR_NODE;
1440         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1441         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1442         lpfc_disc_set_adisc(phba, ndlp);
1443
1444         return ndlp->nlp_state;
1445 }
1446
1447 static uint32_t
1448 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1449                            struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1450 {
1451         struct lpfc_iocbq *cmdiocb;
1452
1453         cmdiocb = (struct lpfc_iocbq *) arg;
1454
1455         lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1456         return ndlp->nlp_state;
1457 }
1458
1459 static uint32_t
1460 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1461                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1462 {
1463         struct lpfc_iocbq *cmdiocb;
1464
1465         cmdiocb = (struct lpfc_iocbq *) arg;
1466
1467         lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1468         return ndlp->nlp_state;
1469 }
1470
1471 static uint32_t
1472 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1473                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1474 {
1475         struct lpfc_iocbq *cmdiocb;
1476
1477         cmdiocb = (struct lpfc_iocbq *) arg;
1478
1479         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1480         return ndlp->nlp_state;
1481 }
1482
1483 static uint32_t
1484 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1485                             struct lpfc_nodelist * ndlp, void *arg,
1486                             uint32_t evt)
1487 {
1488         struct lpfc_iocbq *cmdiocb;
1489
1490         cmdiocb = (struct lpfc_iocbq *) arg;
1491
1492         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1493         return ndlp->nlp_state;
1494 }
1495
1496 static uint32_t
1497 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1498                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1499 {
1500         struct lpfc_iocbq *cmdiocb;
1501
1502         cmdiocb = (struct lpfc_iocbq *) arg;
1503
1504         /* flush the target */
1505         spin_lock_irq(phba->host->host_lock);
1506         lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1507                                ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1508         spin_unlock_irq(phba->host->host_lock);
1509
1510         /* Treat like rcv logo */
1511         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
1512         return ndlp->nlp_state;
1513 }
1514
1515 static uint32_t
1516 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1517                             struct lpfc_nodelist * ndlp, void *arg,
1518                             uint32_t evt)
1519 {
1520         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1521         ndlp->nlp_state = NLP_STE_NPR_NODE;
1522         lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1523         spin_lock_irq(phba->host->host_lock);
1524         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1525         spin_unlock_irq(phba->host->host_lock);
1526         lpfc_disc_set_adisc(phba, ndlp);
1527         return ndlp->nlp_state;
1528 }
1529
1530 static uint32_t
1531 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1532                             struct lpfc_nodelist * ndlp, void *arg,
1533                             uint32_t evt)
1534 {
1535         struct lpfc_iocbq *cmdiocb;
1536
1537         cmdiocb = (struct lpfc_iocbq *) arg;
1538
1539         /* Ignore PLOGI if we have an outstanding LOGO */
1540         if (ndlp->nlp_flag & NLP_LOGO_SND) {
1541                 return ndlp->nlp_state;
1542         }
1543
1544         if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1545                 spin_lock_irq(phba->host->host_lock);
1546                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1547                 spin_unlock_irq(phba->host->host_lock);
1548                 return ndlp->nlp_state;
1549         }
1550
1551         /* send PLOGI immediately, move to PLOGI issue state */
1552         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1553                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1554                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1555                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1556                 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1557         }
1558
1559         return ndlp->nlp_state;
1560 }
1561
1562 static uint32_t
1563 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1564                             struct lpfc_nodelist * ndlp, void *arg,
1565                             uint32_t evt)
1566 {
1567         struct lpfc_iocbq     *cmdiocb;
1568         struct ls_rjt          stat;
1569
1570         cmdiocb = (struct lpfc_iocbq *) arg;
1571
1572         memset(&stat, 0, sizeof (struct ls_rjt));
1573         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1574         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1575         lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1576
1577         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1578                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1579                         spin_lock_irq(phba->host->host_lock);
1580                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1581                         spin_unlock_irq(phba->host->host_lock);
1582                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1583                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1584                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1585                         lpfc_issue_els_adisc(phba, ndlp, 0);
1586                 } else {
1587                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1588                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1589                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1590                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1591                 }
1592
1593         }
1594         return ndlp->nlp_state;
1595 }
1596
1597 static uint32_t
1598 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1599                             struct lpfc_nodelist * ndlp, void *arg,
1600                             uint32_t evt)
1601 {
1602         struct lpfc_iocbq     *cmdiocb;
1603
1604         cmdiocb = (struct lpfc_iocbq *) arg;
1605
1606         lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1607         return ndlp->nlp_state;
1608 }
1609
1610 static uint32_t
1611 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1612                             struct lpfc_nodelist * ndlp, void *arg,
1613                             uint32_t evt)
1614 {
1615         struct lpfc_iocbq     *cmdiocb;
1616
1617         cmdiocb = (struct lpfc_iocbq *) arg;
1618
1619         lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1620
1621         /*
1622          * Do not start discovery if discovery is about to start
1623          * or discovery in progress for this node. Starting discovery
1624          * here will affect the counting of discovery threads.
1625          */
1626         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1627                 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)){
1628                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1629                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1630                         ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1631                         lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1632                         lpfc_issue_els_adisc(phba, ndlp, 0);
1633                 } else {
1634                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1635                         ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1636                         lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1637                         lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1638                 }
1639         }
1640         return ndlp->nlp_state;
1641 }
1642
1643 static uint32_t
1644 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1645                             struct lpfc_nodelist * ndlp, void *arg,
1646                             uint32_t evt)
1647 {
1648         struct lpfc_iocbq     *cmdiocb;
1649
1650         cmdiocb = (struct lpfc_iocbq *) arg;
1651
1652         spin_lock_irq(phba->host->host_lock);
1653         ndlp->nlp_flag |= NLP_LOGO_ACC;
1654         spin_unlock_irq(phba->host->host_lock);
1655
1656         lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1657
1658         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1659                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1660                 spin_lock_irq(phba->host->host_lock);
1661                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1662                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1663                 spin_unlock_irq(phba->host->host_lock);
1664                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1665         } else {
1666                 spin_lock_irq(phba->host->host_lock);
1667                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1668                 spin_unlock_irq(phba->host->host_lock);
1669         }
1670         return ndlp->nlp_state;
1671 }
1672
1673 static uint32_t
1674 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1675                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1676 {
1677         struct lpfc_iocbq *cmdiocb, *rspiocb;
1678         IOCB_t *irsp;
1679
1680         cmdiocb = (struct lpfc_iocbq *) arg;
1681         rspiocb = cmdiocb->context_un.rsp_iocb;
1682
1683         irsp = &rspiocb->iocb;
1684         if (irsp->ulpStatus) {
1685                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1686                 return NLP_STE_FREED_NODE;
1687         }
1688         return ndlp->nlp_state;
1689 }
1690
1691 static uint32_t
1692 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1693                           struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1694 {
1695         struct lpfc_iocbq *cmdiocb, *rspiocb;
1696         IOCB_t *irsp;
1697
1698         cmdiocb = (struct lpfc_iocbq *) arg;
1699         rspiocb = cmdiocb->context_un.rsp_iocb;
1700
1701         irsp = &rspiocb->iocb;
1702         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1703                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1704                 return NLP_STE_FREED_NODE;
1705         }
1706         return ndlp->nlp_state;
1707 }
1708
1709 static uint32_t
1710 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1711                 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1712 {
1713         lpfc_unreg_rpi(phba, ndlp);
1714         /* This routine does nothing, just return the current state */
1715         return ndlp->nlp_state;
1716 }
1717
1718 static uint32_t
1719 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1720                             struct lpfc_nodelist * ndlp, void *arg,
1721                             uint32_t evt)
1722 {
1723         struct lpfc_iocbq *cmdiocb, *rspiocb;
1724         IOCB_t *irsp;
1725
1726         cmdiocb = (struct lpfc_iocbq *) arg;
1727         rspiocb = cmdiocb->context_un.rsp_iocb;
1728
1729         irsp = &rspiocb->iocb;
1730         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1731                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1732                 return NLP_STE_FREED_NODE;
1733         }
1734         return ndlp->nlp_state;
1735 }
1736
1737 static uint32_t
1738 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1739                             struct lpfc_nodelist * ndlp, void *arg,
1740                             uint32_t evt)
1741 {
1742         LPFC_MBOXQ_t *pmb;
1743         MAILBOX_t *mb;
1744
1745         pmb = (LPFC_MBOXQ_t *) arg;
1746         mb = &pmb->mb;
1747
1748         if (!mb->mbxStatus)
1749                 ndlp->nlp_rpi = mb->un.varWords[0];
1750         else {
1751                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1752                         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1753                         return NLP_STE_FREED_NODE;
1754                 }
1755         }
1756         return ndlp->nlp_state;
1757 }
1758
1759 static uint32_t
1760 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1761                             struct lpfc_nodelist * ndlp, void *arg,
1762                             uint32_t evt)
1763 {
1764         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1765                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1766                 return ndlp->nlp_state;
1767         }
1768         lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1769         return NLP_STE_FREED_NODE;
1770 }
1771
1772 static uint32_t
1773 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1774                             struct lpfc_nodelist * ndlp, void *arg,
1775                             uint32_t evt)
1776 {
1777         spin_lock_irq(phba->host->host_lock);
1778         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1779         spin_unlock_irq(phba->host->host_lock);
1780         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1781                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1782         }
1783         return ndlp->nlp_state;
1784 }
1785
1786
1787 /* This next section defines the NPort Discovery State Machine */
1788
1789 /* There are 4 different double linked lists nodelist entries can reside on.
1790  * The plogi list and adisc list are used when Link Up discovery or RSCN
1791  * processing is needed. Each list holds the nodes that we will send PLOGI
1792  * or ADISC on. These lists will keep track of what nodes will be effected
1793  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1794  * The unmapped_list will contain all nodes that we have successfully logged
1795  * into at the Fibre Channel level. The mapped_list will contain all nodes
1796  * that are mapped FCP targets.
1797  */
1798 /*
1799  * The bind list is a list of undiscovered (potentially non-existent) nodes
1800  * that we have saved binding information on. This information is used when
1801  * nodes transition from the unmapped to the mapped list.
1802  */
1803 /* For UNUSED_NODE state, the node has just been allocated .
1804  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1805  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1806  * and put on the unmapped list. For ADISC processing, the node is taken off
1807  * the ADISC list and placed on either the mapped or unmapped list (depending
1808  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1809  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1810  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1811  * node, the node is taken off the unmapped list. The binding list is checked
1812  * for a valid binding, or a binding is automatically assigned. If binding
1813  * assignment is unsuccessful, the node is left on the unmapped list. If
1814  * binding assignment is successful, the associated binding list entry (if
1815  * any) is removed, and the node is placed on the mapped list.
1816  */
1817 /*
1818  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1819  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1820  * expire, all effected nodes will receive a DEVICE_RM event.
1821  */
1822 /*
1823  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1824  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1825  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1826  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1827  * we will first process the ADISC list.  32 entries are processed initially and
1828  * ADISC is initited for each one.  Completions / Events for each node are
1829  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1830  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1831  * waiting, and the ADISC list count is identically 0, then we are done. For
1832  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1833  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1834  * list.  32 entries are processed initially and PLOGI is initited for each one.
1835  * Completions / Events for each node are funnelled thru the state machine.  As
1836  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1837  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1838  * indentically 0, then we are done. We have now completed discovery / RSCN
1839  * handling. Upon completion, ALL nodes should be on either the mapped or
1840  * unmapped lists.
1841  */
1842
1843 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1844      (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1845         /* Action routine                  Event       Current State  */
1846         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
1847         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
1848         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
1849         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
1850         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
1851         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
1852         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1853         lpfc_disc_illegal,              /* CMPL_PRLI       */
1854         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
1855         lpfc_disc_illegal,              /* CMPL_ADISC      */
1856         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1857         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
1858         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
1859
1860         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
1861         lpfc_rcv_els_plogi_issue,       /* RCV_PRLI        */
1862         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
1863         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
1864         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
1865         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
1866         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
1867         lpfc_disc_illegal,              /* CMPL_PRLI       */
1868         lpfc_disc_illegal,              /* CMPL_LOGO       */
1869         lpfc_disc_illegal,              /* CMPL_ADISC      */
1870         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1871         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
1872         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
1873
1874         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
1875         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
1876         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
1877         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
1878         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
1879         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
1880         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1881         lpfc_disc_illegal,              /* CMPL_PRLI       */
1882         lpfc_disc_illegal,              /* CMPL_LOGO       */
1883         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
1884         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1885         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
1886         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
1887
1888         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
1889         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
1890         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
1891         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
1892         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
1893         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
1894         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1895         lpfc_disc_illegal,              /* CMPL_PRLI       */
1896         lpfc_disc_illegal,              /* CMPL_LOGO       */
1897         lpfc_disc_illegal,              /* CMPL_ADISC      */
1898         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
1899         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
1900         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1901
1902         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
1903         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
1904         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
1905         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
1906         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
1907         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
1908         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1909         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
1910         lpfc_disc_illegal,              /* CMPL_LOGO       */
1911         lpfc_disc_illegal,              /* CMPL_ADISC      */
1912         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1913         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
1914         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
1915
1916         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
1917         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
1918         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
1919         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
1920         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
1921         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
1922         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1923         lpfc_disc_illegal,              /* CMPL_PRLI       */
1924         lpfc_disc_illegal,              /* CMPL_LOGO       */
1925         lpfc_disc_illegal,              /* CMPL_ADISC      */
1926         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1927         lpfc_disc_illegal,              /* DEVICE_RM       */
1928         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
1929
1930         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
1931         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
1932         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
1933         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
1934         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
1935         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
1936         lpfc_disc_illegal,              /* CMPL_PLOGI      */
1937         lpfc_disc_illegal,              /* CMPL_PRLI       */
1938         lpfc_disc_illegal,              /* CMPL_LOGO       */
1939         lpfc_disc_illegal,              /* CMPL_ADISC      */
1940         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
1941         lpfc_disc_illegal,              /* DEVICE_RM       */
1942         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
1943
1944         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
1945         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
1946         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
1947         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
1948         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
1949         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
1950         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
1951         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
1952         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
1953         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
1954         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
1955         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
1956         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
1957 };
1958
1959 int
1960 lpfc_disc_state_machine(struct lpfc_hba * phba,
1961                         struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1962 {
1963         uint32_t cur_state, rc;
1964         uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1965                          uint32_t);
1966
1967         ndlp->nlp_disc_refcnt++;
1968         cur_state = ndlp->nlp_state;
1969
1970         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1971         lpfc_printf_log(phba,
1972                         KERN_INFO,
1973                         LOG_DISCOVERY,
1974                         "%d:0211 DSM in event x%x on NPort x%x in state %d "
1975                         "Data: x%x\n",
1976                         phba->brd_no,
1977                         evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1978
1979         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1980         rc = (func) (phba, ndlp, arg, evt);
1981
1982         /* DSM out state <rc> on NPort <nlp_DID> */
1983         lpfc_printf_log(phba,
1984                        KERN_INFO,
1985                        LOG_DISCOVERY,
1986                        "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1987                        phba->brd_no,
1988                        rc, ndlp->nlp_DID, ndlp->nlp_flag);
1989
1990         ndlp->nlp_disc_refcnt--;
1991
1992         /* Check to see if ndlp removal is deferred */
1993         if ((ndlp->nlp_disc_refcnt == 0)
1994             && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1995                 spin_lock_irq(phba->host->host_lock);
1996                 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1997                 spin_unlock_irq(phba->host->host_lock);
1998                 lpfc_nlp_remove(phba, ndlp);
1999                 return NLP_STE_FREED_NODE;
2000         }
2001         if (rc == NLP_STE_FREED_NODE)
2002                 return NLP_STE_FREED_NODE;
2003         return rc;
2004 }