err.no 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) 2004-2008 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 #include "lpfc_vport.h"
  39 #include "lpfc_debugfs.h"
  40
  41
  42 /* Called to verify a rcv'ed ADISC was intended for us. */
  43 static int
  44 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  45                  struct lpfc_name *nn, struct lpfc_name *pn)
  46 {
  47         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  48          * table entry for that node.
  49          */
  50         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  51                 return 0;
  52
  53         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  54                 return 0;
  55
  56         /* we match, return success */
  57         return 1;
  58 }
  59
  60 int
  61 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  62                  struct serv_parm * sp, uint32_t class)
  63 {
  64         volatile struct serv_parm *hsp = &vport->fc_sparam;
  65         uint16_t hsp_value, ssp_value = 0;
  66
  67         /*
  68          * The receive data field size and buffer-to-buffer receive data field
  69          * size entries are 16 bits but are represented as two 8-bit fields in
  70          * the driver data structure to account for rsvd bits and other control
  71          * bits.  Reconstruct and compare the fields as a 16-bit values before
  72          * correcting the byte values.
  73          */
  74         if (sp->cls1.classValid) {
  75                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
  76                                 hsp->cls1.rcvDataSizeLsb;
  77                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
  78                                 sp->cls1.rcvDataSizeLsb;
  79                 if (!ssp_value)
  80                         goto bad_service_param;
  81                 if (ssp_value > hsp_value) {
  82                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
  83                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
  84                 }
  85         } else if (class == CLASS1) {
  86                 goto bad_service_param;
  87         }
  88
  89         if (sp->cls2.classValid) {
  90                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
  91                                 hsp->cls2.rcvDataSizeLsb;
  92                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
  93                                 sp->cls2.rcvDataSizeLsb;
  94                 if (!ssp_value)
  95                         goto bad_service_param;
  96                 if (ssp_value > hsp_value) {
  97                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
  98                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
  99                 }
 100         } else if (class == CLASS2) {
 101                 goto bad_service_param;
 102         }
 103
 104         if (sp->cls3.classValid) {
 105                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
 106                                 hsp->cls3.rcvDataSizeLsb;
 107                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
 108                                 sp->cls3.rcvDataSizeLsb;
 109                 if (!ssp_value)
 110                         goto bad_service_param;
 111                 if (ssp_value > hsp_value) {
 112                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
 113                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
 114                 }
 115         } else if (class == CLASS3) {
 116                 goto bad_service_param;
 117         }
 118
 119         /*
 120          * Preserve the upper four bits of the MSB from the PLOGI response.
 121          * These bits contain the Buffer-to-Buffer State Change Number
 122          * from the target and need to be passed to the FW.
 123          */
 124         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 125         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 126         if (ssp_value > hsp_value) {
 127                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 128                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 129                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 130         }
 131
 132         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 133         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 134         return 1;
 135 bad_service_param:
 136         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 137                          "0207 Device %x "
 138                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 139                          "invalid service parameters.  Ignoring device.\n",
 140                          ndlp->nlp_DID,
 141                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 142                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 143                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 144                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 145         return 0;
 146 }
 147
 148 static void *
 149 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 150                         struct lpfc_iocbq *rspiocb)
 151 {
 152         struct lpfc_dmabuf *pcmd, *prsp;
 153         uint32_t *lp;
 154         void     *ptr = NULL;
 155         IOCB_t   *irsp;
 156
 157         irsp = &rspiocb->iocb;
 158         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 159
 160         /* For lpfc_els_abort, context2 could be zero'ed to delay
 161          * freeing associated memory till after ABTS completes.
 162          */
 163         if (pcmd) {
 164                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 165                                        list);
 166                 if (prsp) {
 167                         lp = (uint32_t *) prsp->virt;
 168                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 169                 }
 170         } else {
 171                 /* Force ulpStatus error since we are returning NULL ptr */
 172                 if (!(irsp->ulpStatus)) {
 173                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 174                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 175                 }
 176                 ptr = NULL;
 177         }
 178         return ptr;
 179 }
 180
 181
 182 /*
 183  * Free resources / clean up outstanding I/Os
 184  * associated with a LPFC_NODELIST entry. This
 185  * routine effectively results in a "software abort".
 186  */
 187 int
 188 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 189 {
 190         LIST_HEAD(completions);
 191         struct lpfc_sli  *psli = &phba->sli;
 192         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 193         struct lpfc_iocbq *iocb, *next_iocb;
 194         IOCB_t *cmd;
 195
 196         /* Abort outstanding I/O on NPort <nlp_DID> */
 197         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 198                          "0205 Abort outstanding I/O on NPort x%x "
 199                          "Data: x%x x%x x%x\n",
 200                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 201                          ndlp->nlp_rpi);
 202
 203         lpfc_fabric_abort_nport(ndlp);
 204
 205         /* First check the txq */
 206         spin_lock_irq(&phba->hbalock);
 207         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 208                 /* Check to see if iocb matches the nport we are looking for */
 209                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 210                         /* It matches, so deque and call compl with anp error */
 211                         list_move_tail(&iocb->list, &completions);
 212                         pring->txq_cnt--;
 213                 }
 214         }
 215
 216         /* Next check the txcmplq */
 217         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 218                 /* Check to see if iocb matches the nport we are looking for */
 219                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 220                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 221                 }
 222         }
 223         spin_unlock_irq(&phba->hbalock);
 224
 225         while (!list_empty(&completions)) {
 226                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
 227                 cmd = &iocb->iocb;
 228                 list_del_init(&iocb->list);
 229
 230                 if (!iocb->iocb_cmpl)
 231                         lpfc_sli_release_iocbq(phba, iocb);
 232                 else {
 233                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
 234                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
 235                         (iocb->iocb_cmpl) (phba, iocb, iocb);
 236                 }
 237         }
 238
 239         /* If we are delaying issuing an ELS command, cancel it */
 240         if (ndlp->nlp_flag & NLP_DELAY_TMO)
 241                 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 242         return 0;
 243 }
 244
 245 static int
 246 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 247                struct lpfc_iocbq *cmdiocb)
 248 {
 249         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 250         struct lpfc_hba    *phba = vport->phba;
 251         struct lpfc_dmabuf *pcmd;
 252         struct lpfc_work_evt *evtp;
 253         uint32_t *lp;
 254         IOCB_t *icmd;
 255         struct serv_parm *sp;
 256         LPFC_MBOXQ_t *mbox;
 257         struct ls_rjt stat;
 258         int rc;
 259
 260         memset(&stat, 0, sizeof (struct ls_rjt));
 261         if (vport->port_state <= LPFC_FLOGI) {
 262                 /* Before responding to PLOGI, check for pt2pt mode.
 263                  * If we are pt2pt, with an outstanding FLOGI, abort
 264                  * the FLOGI and resend it first.
 265                  */
 266                 if (vport->fc_flag & FC_PT2PT) {
 267                          lpfc_els_abort_flogi(phba);
 268                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
 269                                 /* If the other side is supposed to initiate
 270                                  * the PLOGI anyway, just ACC it now and
 271                                  * move on with discovery.
 272                                  */
 273                                 phba->fc_edtov = FF_DEF_EDTOV;
 274                                 phba->fc_ratov = FF_DEF_RATOV;
 275                                 /* Start discovery - this should just do
 276                                    CLEAR_LA */
 277                                 lpfc_disc_start(vport);
 278                         } else
 279                                 lpfc_initial_flogi(vport);
 280                 } else {
 281                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 282                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 283                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 284                                             ndlp, NULL);
 285                         return 0;
 286                 }
 287         }
 288         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 289         lp = (uint32_t *) pcmd->virt;
 290         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 291         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 292                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 293                                  "0140 PLOGI Reject: invalid nname\n");
 294                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 295                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 296                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 297                         NULL);
 298                 return 0;
 299         }
 300         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 301                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 302                                  "0141 PLOGI Reject: invalid pname\n");
 303                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 304                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 305                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 306                         NULL);
 307                 return 0;
 308         }
 309         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
 310                 /* Reject this request because invalid parameters */
 311                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 312                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 313                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 314                         NULL);
 315                 return 0;
 316         }
 317         icmd = &cmdiocb->iocb;
 318
 319         /* PLOGI chkparm OK */
 320         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 321                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 322                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 323                          ndlp->nlp_rpi);
 324
 325         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 326                 ndlp->nlp_fcp_info |= CLASS2;
 327         else
 328                 ndlp->nlp_fcp_info |= CLASS3;
 329
 330         ndlp->nlp_class_sup = 0;
 331         if (sp->cls1.classValid)
 332                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 333         if (sp->cls2.classValid)
 334                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 335         if (sp->cls3.classValid)
 336                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 337         if (sp->cls4.classValid)
 338                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 339         ndlp->nlp_maxframe =
 340                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 341
 342         /* no need to reg_login if we are already in one of these states */
 343         switch (ndlp->nlp_state) {
 344         case  NLP_STE_NPR_NODE:
 345                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 346                         break;
 347         case  NLP_STE_REG_LOGIN_ISSUE:
 348         case  NLP_STE_PRLI_ISSUE:
 349         case  NLP_STE_UNMAPPED_NODE:
 350         case  NLP_STE_MAPPED_NODE:
 351                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
 352                 return 1;
 353         }
 354
 355         if ((vport->fc_flag & FC_PT2PT) &&
 356             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 357                 /* rcv'ed PLOGI decides what our NPortId will be */
 358                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 359                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 360                 if (mbox == NULL)
 361                         goto out;
 362                 lpfc_config_link(phba, mbox);
 363                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 364                 mbox->vport = vport;
 365                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 366                 if (rc == MBX_NOT_FINISHED) {
 367                         mempool_free(mbox, phba->mbox_mem_pool);
 368                         goto out;
 369                 }
 370
 371                 lpfc_can_disctmo(vport);
 372         }
 373         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 374         if (!mbox)
 375                 goto out;
 376
 377         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
 378                             (uint8_t *) sp, mbox, 0);
 379         if (rc) {
 380                 mempool_free(mbox, phba->mbox_mem_pool);
 381                 goto out;
 382         }
 383
 384         /* ACC PLOGI rsp command needs to execute first,
 385          * queue this mbox command to be processed later.
 386          */
 387         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 388         /*
 389          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 390          * command issued in lpfc_cmpl_els_acc().
 391          */
 392         mbox->vport = vport;
 393         spin_lock_irq(shost->host_lock);
 394         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 395         spin_unlock_irq(shost->host_lock);
 396
 397         /*
 398          * If there is an outstanding PLOGI issued, abort it before
 399          * sending ACC rsp for received PLOGI. If pending plogi
 400          * is not canceled here, the plogi will be rejected by
 401          * remote port and will be retried. On a configuration with
 402          * single discovery thread, this will cause a huge delay in
 403          * discovery. Also this will cause multiple state machines
 404          * running in parallel for this node.
 405          */
 406         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 407                 /* software abort outstanding PLOGI */
 408                 lpfc_els_abort(phba, ndlp);
 409         }
 410
 411         if ((vport->port_type == LPFC_NPIV_PORT &&
 412              vport->cfg_restrict_login)) {
 413
 414                 /* In order to preserve RPIs, we want to cleanup
 415                  * the default RPI the firmware created to rcv
 416                  * this ELS request. The only way to do this is
 417                  * to register, then unregister the RPI.
 418                  */
 419                 spin_lock_irq(shost->host_lock);
 420                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 421                 spin_unlock_irq(shost->host_lock);
 422                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 423                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 424                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 425                         ndlp, mbox);
 426                 return 1;
 427         }
 428
 429         /* If the remote NPort logs into us, before we can initiate
 430          * discovery to them, cleanup the NPort from discovery accordingly.
 431          */
 432         if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
 433                 spin_lock_irq(shost->host_lock);
 434                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
 435                 spin_unlock_irq(shost->host_lock);
 436                 del_timer_sync(&ndlp->nlp_delayfunc);
 437                 ndlp->nlp_last_elscmd = 0;
 438
 439                 if (!list_empty(&ndlp->els_retry_evt.evt_listp)) {
 440                         list_del_init(&ndlp->els_retry_evt.evt_listp);
 441                         /* Decrement ndlp reference count held for the
 442                          * delayed retry
 443                          */
 444                         evtp = &ndlp->els_retry_evt;
 445                         lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
 446                 }
 447
 448                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 449                         spin_lock_irq(shost->host_lock);
 450                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 451                         spin_unlock_irq(shost->host_lock);
 452
 453                         if ((ndlp->nlp_flag & NLP_ADISC_SND) &&
 454                                 (vport->num_disc_nodes)) {
 455                                 /* Check to see if there are more
 456                                  * ADISCs to be sent
 457                                  */
 458                                 lpfc_more_adisc(vport);
 459
 460                                 if ((vport->num_disc_nodes == 0) &&
 461                                         (vport->fc_npr_cnt))
 462                                         lpfc_els_disc_plogi(vport);
 463
 464                                 if (vport->num_disc_nodes == 0) {
 465                                         spin_lock_irq(shost->host_lock);
 466                                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
 467                                         spin_unlock_irq(shost->host_lock);
 468                                         lpfc_can_disctmo(vport);
 469                                         lpfc_end_rscn(vport);
 470                                 }
 471                         }
 472                         else if (vport->num_disc_nodes) {
 473                                 /* Check to see if there are more
 474                                  * PLOGIs to be sent
 475                                  */
 476                                 lpfc_more_plogi(vport);
 477
 478                                 if (vport->num_disc_nodes == 0) {
 479                                         spin_lock_irq(shost->host_lock);
 480                                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
 481                                         spin_unlock_irq(shost->host_lock);
 482                                         lpfc_can_disctmo(vport);
 483                                         lpfc_end_rscn(vport);
 484                                 }
 485                         }
 486                 }
 487         }
 488
 489         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 490         return 1;
 491
 492 out:
 493         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 494         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 495         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 496         return 0;
 497 }
 498
 499 static int
 500 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 501                 struct lpfc_iocbq *cmdiocb)
 502 {
 503         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 504         struct lpfc_dmabuf *pcmd;
 505         struct serv_parm   *sp;
 506         struct lpfc_name   *pnn, *ppn;
 507         struct ls_rjt stat;
 508         ADISC *ap;
 509         IOCB_t *icmd;
 510         uint32_t *lp;
 511         uint32_t cmd;
 512
 513         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 514         lp = (uint32_t *) pcmd->virt;
 515
 516         cmd = *lp++;
 517         if (cmd == ELS_CMD_ADISC) {
 518                 ap = (ADISC *) lp;
 519                 pnn = (struct lpfc_name *) & ap->nodeName;
 520                 ppn = (struct lpfc_name *) & ap->portName;
 521         } else {
 522                 sp = (struct serv_parm *) lp;
 523                 pnn = (struct lpfc_name *) & sp->nodeName;
 524                 ppn = (struct lpfc_name *) & sp->portName;
 525         }
 526
 527         icmd = &cmdiocb->iocb;
 528         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 529                 if (cmd == ELS_CMD_ADISC) {
 530                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 531                 } else {
 532                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
 533                                          NULL);
 534                 }
 535                 return 1;
 536         }
 537         /* Reject this request because invalid parameters */
 538         stat.un.b.lsRjtRsvd0 = 0;
 539         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 540         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 541         stat.un.b.vendorUnique = 0;
 542         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 543
 544         /* 1 sec timeout */
 545         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
 546
 547         spin_lock_irq(shost->host_lock);
 548         ndlp->nlp_flag |= NLP_DELAY_TMO;
 549         spin_unlock_irq(shost->host_lock);
 550         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 551         ndlp->nlp_prev_state = ndlp->nlp_state;
 552         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 553         return 0;
 554 }
 555
 556 static int
 557 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 558               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 559 {
 560         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 561
 562         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 563         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 564          * PLOGIs during LOGO storms from a device.
 565          */
 566         spin_lock_irq(shost->host_lock);
 567         ndlp->nlp_flag |= NLP_LOGO_ACC;
 568         spin_unlock_irq(shost->host_lock);
 569         if (els_cmd == ELS_CMD_PRLO)
 570                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 571         else
 572                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 573
 574         if (!(ndlp->nlp_type & NLP_FABRIC) ||
 575             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 576                 /* Only try to re-login if this is NOT a Fabric Node */
 577                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 578                 spin_lock_irq(shost->host_lock);
 579                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 580                 spin_unlock_irq(shost->host_lock);
 581
 582                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 583         }
 584         ndlp->nlp_prev_state = ndlp->nlp_state;
 585         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 586
 587         spin_lock_irq(shost->host_lock);
 588         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 589         spin_unlock_irq(shost->host_lock);
 590         /* The driver has to wait until the ACC completes before it continues
 591          * processing the LOGO.  The action will resume in
 592          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 593          * unreg_login, the driver waits so the ACC does not get aborted.
 594          */
 595         return 0;
 596 }
 597
 598 static void
 599 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 600               struct lpfc_iocbq *cmdiocb)
 601 {
 602         struct lpfc_dmabuf *pcmd;
 603         uint32_t *lp;
 604         PRLI *npr;
 605         struct fc_rport *rport = ndlp->rport;
 606         u32 roles;
 607
 608         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 609         lp = (uint32_t *) pcmd->virt;
 610         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 611
 612         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 613         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 614         if (npr->prliType == PRLI_FCP_TYPE) {
 615                 if (npr->initiatorFunc)
 616                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 617                 if (npr->targetFunc)
 618                         ndlp->nlp_type |= NLP_FCP_TARGET;
 619                 if (npr->Retry)
 620                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 621         }
 622         if (rport) {
 623                 /* We need to update the rport role values */
 624                 roles = FC_RPORT_ROLE_UNKNOWN;
 625                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 626                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 627                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 628                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 629
 630                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 631                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 632                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 633
 634                 fc_remote_port_rolechg(rport, roles);
 635         }
 636 }
 637
 638 static uint32_t
 639 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 640 {
 641         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 642
 643         if (!ndlp->nlp_rpi) {
 644                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 645                 return 0;
 646         }
 647
 648         if (!(vport->fc_flag & FC_PT2PT)) {
 649                 /* Check config parameter use-adisc or FCP-2 */
 650                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 651                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 652                         spin_lock_irq(shost->host_lock);
 653                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 654                         spin_unlock_irq(shost->host_lock);
 655                         return 1;
 656                 }
 657         }
 658         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 659         lpfc_unreg_rpi(vport, ndlp);
 660         return 0;
 661 }
 662
 663 static uint32_t
 664 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 665                   void *arg, uint32_t evt)
 666 {
 667         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 668                          "0271 Illegal State Transition: node x%x "
 669                          "event x%x, state x%x Data: x%x x%x\n",
 670                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 671                          ndlp->nlp_flag);
 672         return ndlp->nlp_state;
 673 }
 674
 675 static uint32_t
 676 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 677                   void *arg, uint32_t evt)
 678 {
 679         /* This transition is only legal if we previously
 680          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 681          * working on the same NPortID, do nothing for this thread
 682          * to stop it.
 683          */
 684         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 685                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 686                          "0272 Illegal State Transition: node x%x "
 687                          "event x%x, state x%x Data: x%x x%x\n",
 688                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 689                          ndlp->nlp_flag);
 690         }
 691         return ndlp->nlp_state;
 692 }
 693
 694 /* Start of Discovery State Machine routines */
 695
 696 static uint32_t
 697 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 698                            void *arg, uint32_t evt)
 699 {
 700         struct lpfc_iocbq *cmdiocb;
 701
 702         cmdiocb = (struct lpfc_iocbq *) arg;
 703
 704         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 705                 return ndlp->nlp_state;
 706         }
 707         return NLP_STE_FREED_NODE;
 708 }
 709
 710 static uint32_t
 711 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 712                          void *arg, uint32_t evt)
 713 {
 714         lpfc_issue_els_logo(vport, ndlp, 0);
 715         return ndlp->nlp_state;
 716 }
 717
 718 static uint32_t
 719 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 720                           void *arg, uint32_t evt)
 721 {
 722         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 723         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 724
 725         spin_lock_irq(shost->host_lock);
 726         ndlp->nlp_flag |= NLP_LOGO_ACC;
 727         spin_unlock_irq(shost->host_lock);
 728         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 729
 730         return ndlp->nlp_state;
 731 }
 732
 733 static uint32_t
 734 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 735                            void *arg, uint32_t evt)
 736 {
 737         return NLP_STE_FREED_NODE;
 738 }
 739
 740 static uint32_t
 741 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 742                            void *arg, uint32_t evt)
 743 {
 744         return NLP_STE_FREED_NODE;
 745 }
 746
 747 static uint32_t
 748 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 749                            void *arg, uint32_t evt)
 750 {
 751         struct lpfc_hba   *phba = vport->phba;
 752         struct lpfc_iocbq *cmdiocb = arg;
 753         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 754         uint32_t *lp = (uint32_t *) pcmd->virt;
 755         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 756         struct ls_rjt stat;
 757         int port_cmp;
 758
 759         memset(&stat, 0, sizeof (struct ls_rjt));
 760
 761         /* For a PLOGI, we only accept if our portname is less
 762          * than the remote portname.
 763          */
 764         phba->fc_stat.elsLogiCol++;
 765         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 766                           sizeof(struct lpfc_name));
 767
 768         if (port_cmp >= 0) {
 769                 /* Reject this request because the remote node will accept
 770                    ours */
 771                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 772                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 773                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 774                         NULL);
 775         } else {
 776                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
 777         } /* If our portname was less */
 778
 779         return ndlp->nlp_state;
 780 }
 781
 782 static uint32_t
 783 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 784                           void *arg, uint32_t evt)
 785 {
 786         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 787         struct ls_rjt     stat;
 788
 789         memset(&stat, 0, sizeof (struct ls_rjt));
 790         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 791         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 792         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 793         return ndlp->nlp_state;
 794 }
 795
 796 static uint32_t
 797 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 798                           void *arg, uint32_t evt)
 799 {
 800         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 801
 802                                 /* software abort outstanding PLOGI */
 803         lpfc_els_abort(vport->phba, ndlp);
 804
 805         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 806         return ndlp->nlp_state;
 807 }
 808
 809 static uint32_t
 810 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 811                          void *arg, uint32_t evt)
 812 {
 813         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 814         struct lpfc_hba   *phba = vport->phba;
 815         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 816
 817         /* software abort outstanding PLOGI */
 818         lpfc_els_abort(phba, ndlp);
 819
 820         if (evt == NLP_EVT_RCV_LOGO) {
 821                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 822         } else {
 823                 lpfc_issue_els_logo(vport, ndlp, 0);
 824         }
 825
 826         /* Put ndlp in npr state set plogi timer for 1 sec */
 827         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 828         spin_lock_irq(shost->host_lock);
 829         ndlp->nlp_flag |= NLP_DELAY_TMO;
 830         spin_unlock_irq(shost->host_lock);
 831         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 832         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 833         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 834
 835         return ndlp->nlp_state;
 836 }
 837
 838 static uint32_t
 839 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 840                             struct lpfc_nodelist *ndlp,
 841                             void *arg,
 842                             uint32_t evt)
 843 {
 844         struct lpfc_hba    *phba = vport->phba;
 845         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 846         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 847         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 848         uint32_t *lp;
 849         IOCB_t *irsp;
 850         struct serv_parm *sp;
 851         LPFC_MBOXQ_t *mbox;
 852
 853         cmdiocb = (struct lpfc_iocbq *) arg;
 854         rspiocb = cmdiocb->context_un.rsp_iocb;
 855
 856         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 857                 /* Recovery from PLOGI collision logic */
 858                 return ndlp->nlp_state;
 859         }
 860
 861         irsp = &rspiocb->iocb;
 862
 863         if (irsp->ulpStatus)
 864                 goto out;
 865
 866         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 867
 868         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 869
 870         lp = (uint32_t *) prsp->virt;
 871         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 872         if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
 873             wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 874                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 875                                  "0142 PLOGI RSP: Invalid WWN.\n");
 876                 goto out;
 877         }
 878         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 879                 goto out;
 880         /* PLOGI chkparm OK */
 881         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 882                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 883                          ndlp->nlp_DID, ndlp->nlp_state,
 884                          ndlp->nlp_flag, ndlp->nlp_rpi);
 885         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 886                 ndlp->nlp_fcp_info |= CLASS2;
 887         else
 888                 ndlp->nlp_fcp_info |= CLASS3;
 889
 890         ndlp->nlp_class_sup = 0;
 891         if (sp->cls1.classValid)
 892                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 893         if (sp->cls2.classValid)
 894                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 895         if (sp->cls3.classValid)
 896                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 897         if (sp->cls4.classValid)
 898                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 899         ndlp->nlp_maxframe =
 900                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 901
 902         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 903         if (!mbox) {
 904                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 905                         "0133 PLOGI: no memory for reg_login "
 906                         "Data: x%x x%x x%x x%x\n",
 907                         ndlp->nlp_DID, ndlp->nlp_state,
 908                         ndlp->nlp_flag, ndlp->nlp_rpi);
 909                 goto out;
 910         }
 911
 912         lpfc_unreg_rpi(vport, ndlp);
 913
 914         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 915                            (uint8_t *) sp, mbox, 0) == 0) {
 916                 switch (ndlp->nlp_DID) {
 917                 case NameServer_DID:
 918                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 919                         break;
 920                 case FDMI_DID:
 921                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 922                         break;
 923                 default:
 924                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 925                 }
 926                 mbox->context2 = lpfc_nlp_get(ndlp);
 927                 mbox->vport = vport;
 928                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 929                     != MBX_NOT_FINISHED) {
 930                         lpfc_nlp_set_state(vport, ndlp,
 931                                            NLP_STE_REG_LOGIN_ISSUE);
 932                         return ndlp->nlp_state;
 933                 }
 934                 /* decrement node reference count to the failed mbox
 935                  * command
 936                  */
 937                 lpfc_nlp_put(ndlp);
 938                 mp = (struct lpfc_dmabuf *) mbox->context1;
 939                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 940                 kfree(mp);
 941                 mempool_free(mbox, phba->mbox_mem_pool);
 942
 943                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 944                                  "0134 PLOGI: cannot issue reg_login "
 945                                  "Data: x%x x%x x%x x%x\n",
 946                                  ndlp->nlp_DID, ndlp->nlp_state,
 947                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 948         } else {
 949                 mempool_free(mbox, phba->mbox_mem_pool);
 950
 951                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 952                                  "0135 PLOGI: cannot format reg_login "
 953                                  "Data: x%x x%x x%x x%x\n",
 954                                  ndlp->nlp_DID, ndlp->nlp_state,
 955                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 956         }
 957
 958
 959 out:
 960         if (ndlp->nlp_DID == NameServer_DID) {
 961                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 962                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 963                                  "0261 Cannot Register NameServer login\n");
 964         }
 965
 966         spin_lock_irq(shost->host_lock);
 967         ndlp->nlp_flag |= NLP_DEFER_RM;
 968         spin_unlock_irq(shost->host_lock);
 969         return NLP_STE_FREED_NODE;
 970 }
 971
 972 static uint32_t
 973 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 974                            void *arg, uint32_t evt)
 975 {
 976         return ndlp->nlp_state;
 977 }
 978
 979 static uint32_t
 980 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
 981         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
 982 {
 983         return ndlp->nlp_state;
 984 }
 985
 986 static uint32_t
 987 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 988                            void *arg, uint32_t evt)
 989 {
 990         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 991
 992         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 993                 spin_lock_irq(shost->host_lock);
 994                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 995                 spin_unlock_irq(shost->host_lock);
 996                 return ndlp->nlp_state;
 997         } else {
 998                 /* software abort outstanding PLOGI */
 999                 lpfc_els_abort(vport->phba, ndlp);
1000
1001                 lpfc_drop_node(vport, ndlp);
1002                 return NLP_STE_FREED_NODE;
1003         }
1004 }
1005
1006 static uint32_t
1007 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1008                               struct lpfc_nodelist *ndlp,
1009                               void *arg,
1010                               uint32_t evt)
1011 {
1012         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1013         struct lpfc_hba  *phba = vport->phba;
1014
1015         /* Don't do anything that will mess up processing of the
1016          * previous RSCN.
1017          */
1018         if (vport->fc_flag & FC_RSCN_DEFERRED)
1019                 return ndlp->nlp_state;
1020
1021         /* software abort outstanding PLOGI */
1022         lpfc_els_abort(phba, ndlp);
1023
1024         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1025         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1026         spin_lock_irq(shost->host_lock);
1027         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1028         spin_unlock_irq(shost->host_lock);
1029
1030         return ndlp->nlp_state;
1031 }
1032
1033 static uint32_t
1034 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1035                            void *arg, uint32_t evt)
1036 {
1037         struct lpfc_hba   *phba = vport->phba;
1038         struct lpfc_iocbq *cmdiocb;
1039
1040         /* software abort outstanding ADISC */
1041         lpfc_els_abort(phba, ndlp);
1042
1043         cmdiocb = (struct lpfc_iocbq *) arg;
1044
1045         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
1046                 return ndlp->nlp_state;
1047
1048         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1049         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1050         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1051
1052         return ndlp->nlp_state;
1053 }
1054
1055 static uint32_t
1056 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1057                           void *arg, uint32_t evt)
1058 {
1059         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1060
1061         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1062         return ndlp->nlp_state;
1063 }
1064
1065 static uint32_t
1066 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1067                           void *arg, uint32_t evt)
1068 {
1069         struct lpfc_hba *phba = vport->phba;
1070         struct lpfc_iocbq *cmdiocb;
1071
1072         cmdiocb = (struct lpfc_iocbq *) arg;
1073
1074         /* software abort outstanding ADISC */
1075         lpfc_els_abort(phba, ndlp);
1076
1077         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1078         return ndlp->nlp_state;
1079 }
1080
1081 static uint32_t
1082 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1083                             struct lpfc_nodelist *ndlp,
1084                             void *arg, uint32_t evt)
1085 {
1086         struct lpfc_iocbq *cmdiocb;
1087
1088         cmdiocb = (struct lpfc_iocbq *) arg;
1089
1090         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1091         return ndlp->nlp_state;
1092 }
1093
1094 static uint32_t
1095 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1096                           void *arg, uint32_t evt)
1097 {
1098         struct lpfc_iocbq *cmdiocb;
1099
1100         cmdiocb = (struct lpfc_iocbq *) arg;
1101
1102         /* Treat like rcv logo */
1103         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1104         return ndlp->nlp_state;
1105 }
1106
1107 static uint32_t
1108 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1109                             struct lpfc_nodelist *ndlp,
1110                             void *arg, uint32_t evt)
1111 {
1112         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1113         struct lpfc_hba   *phba = vport->phba;
1114         struct lpfc_iocbq *cmdiocb, *rspiocb;
1115         IOCB_t *irsp;
1116         ADISC *ap;
1117
1118         cmdiocb = (struct lpfc_iocbq *) arg;
1119         rspiocb = cmdiocb->context_un.rsp_iocb;
1120
1121         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1122         irsp = &rspiocb->iocb;
1123
1124         if ((irsp->ulpStatus) ||
1125             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1126                 /* 1 sec timeout */
1127                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1128                 spin_lock_irq(shost->host_lock);
1129                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1130                 spin_unlock_irq(shost->host_lock);
1131                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1132
1133                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1134                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1135
1136                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1137                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1138                 lpfc_unreg_rpi(vport, ndlp);
1139                 return ndlp->nlp_state;
1140         }
1141
1142         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1143                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1144                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1145         } else {
1146                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1147                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1148         }
1149         return ndlp->nlp_state;
1150 }
1151
1152 static uint32_t
1153 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1154                            void *arg, uint32_t evt)
1155 {
1156         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1157
1158         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1159                 spin_lock_irq(shost->host_lock);
1160                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1161                 spin_unlock_irq(shost->host_lock);
1162                 return ndlp->nlp_state;
1163         } else {
1164                 /* software abort outstanding ADISC */
1165                 lpfc_els_abort(vport->phba, ndlp);
1166
1167                 lpfc_drop_node(vport, ndlp);
1168                 return NLP_STE_FREED_NODE;
1169         }
1170 }
1171
1172 static uint32_t
1173 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1174                               struct lpfc_nodelist *ndlp,
1175                               void *arg,
1176                               uint32_t evt)
1177 {
1178         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1179         struct lpfc_hba  *phba = vport->phba;
1180
1181         /* Don't do anything that will mess up processing of the
1182          * previous RSCN.
1183          */
1184         if (vport->fc_flag & FC_RSCN_DEFERRED)
1185                 return ndlp->nlp_state;
1186
1187         /* software abort outstanding ADISC */
1188         lpfc_els_abort(phba, ndlp);
1189
1190         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1191         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1192         spin_lock_irq(shost->host_lock);
1193         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1194         spin_unlock_irq(shost->host_lock);
1195         lpfc_disc_set_adisc(vport, ndlp);
1196         return ndlp->nlp_state;
1197 }
1198
1199 static uint32_t
1200 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1201                               struct lpfc_nodelist *ndlp,
1202                               void *arg,
1203                               uint32_t evt)
1204 {
1205         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1206
1207         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1208         return ndlp->nlp_state;
1209 }
1210
1211 static uint32_t
1212 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1213                              struct lpfc_nodelist *ndlp,
1214                              void *arg,
1215                              uint32_t evt)
1216 {
1217         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1218
1219         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1220         return ndlp->nlp_state;
1221 }
1222
1223 static uint32_t
1224 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1225                              struct lpfc_nodelist *ndlp,
1226                              void *arg,
1227                              uint32_t evt)
1228 {
1229         struct lpfc_hba   *phba = vport->phba;
1230         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1231         LPFC_MBOXQ_t      *mb;
1232         LPFC_MBOXQ_t      *nextmb;
1233         struct lpfc_dmabuf *mp;
1234
1235         cmdiocb = (struct lpfc_iocbq *) arg;
1236
1237         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1238         if ((mb = phba->sli.mbox_active)) {
1239                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1240                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1241                         lpfc_nlp_put(ndlp);
1242                         mb->context2 = NULL;
1243                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1244                 }
1245         }
1246
1247         spin_lock_irq(&phba->hbalock);
1248         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1249                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1250                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1251                         mp = (struct lpfc_dmabuf *) (mb->context1);
1252                         if (mp) {
1253                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1254                                 kfree(mp);
1255                         }
1256                         lpfc_nlp_put(ndlp);
1257                         list_del(&mb->list);
1258                         mempool_free(mb, phba->mbox_mem_pool);
1259                 }
1260         }
1261         spin_unlock_irq(&phba->hbalock);
1262
1263         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1264         return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1269                                struct lpfc_nodelist *ndlp,
1270                                void *arg,
1271                                uint32_t evt)
1272 {
1273         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1274
1275         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1276         return ndlp->nlp_state;
1277 }
1278
1279 static uint32_t
1280 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1281                              struct lpfc_nodelist *ndlp,
1282                              void *arg,
1283                              uint32_t evt)
1284 {
1285         struct lpfc_iocbq *cmdiocb;
1286
1287         cmdiocb = (struct lpfc_iocbq *) arg;
1288         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1289         return ndlp->nlp_state;
1290 }
1291
1292 static uint32_t
1293 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1294                                   struct lpfc_nodelist *ndlp,
1295                                   void *arg,
1296                                   uint32_t evt)
1297 {
1298         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1299         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1300         MAILBOX_t *mb = &pmb->mb;
1301         uint32_t did  = mb->un.varWords[1];
1302
1303         if (mb->mbxStatus) {
1304                 /* RegLogin failed */
1305                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1306                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1307                                 did, mb->mbxStatus, vport->port_state);
1308                 /*
1309                  * If RegLogin failed due to lack of HBA resources do not
1310                  * retry discovery.
1311                  */
1312                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1313                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1314                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1315                         return ndlp->nlp_state;
1316                 }
1317
1318                 /* Put ndlp in npr state set plogi timer for 1 sec */
1319                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1320                 spin_lock_irq(shost->host_lock);
1321                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1322                 spin_unlock_irq(shost->host_lock);
1323                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1324
1325                 lpfc_issue_els_logo(vport, ndlp, 0);
1326                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1327                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1328                 return ndlp->nlp_state;
1329         }
1330
1331         ndlp->nlp_rpi = mb->un.varWords[0];
1332
1333         /* Only if we are not a fabric nport do we issue PRLI */
1334         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1335                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1336                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1337                 lpfc_issue_els_prli(vport, ndlp, 0);
1338         } else {
1339                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1340                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1341         }
1342         return ndlp->nlp_state;
1343 }
1344
1345 static uint32_t
1346 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1347                               struct lpfc_nodelist *ndlp,
1348                               void *arg,
1349                               uint32_t evt)
1350 {
1351         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1352
1353         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1354                 spin_lock_irq(shost->host_lock);
1355                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1356                 spin_unlock_irq(shost->host_lock);
1357                 return ndlp->nlp_state;
1358         } else {
1359                 lpfc_drop_node(vport, ndlp);
1360                 return NLP_STE_FREED_NODE;
1361         }
1362 }
1363
1364 static uint32_t
1365 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1366                                  struct lpfc_nodelist *ndlp,
1367                                  void *arg,
1368                                  uint32_t evt)
1369 {
1370         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1371
1372         /* Don't do anything that will mess up processing of the
1373          * previous RSCN.
1374          */
1375         if (vport->fc_flag & FC_RSCN_DEFERRED)
1376                 return ndlp->nlp_state;
1377
1378         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1379         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1380         spin_lock_irq(shost->host_lock);
1381         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1382         spin_unlock_irq(shost->host_lock);
1383         lpfc_disc_set_adisc(vport, ndlp);
1384         return ndlp->nlp_state;
1385 }
1386
1387 static uint32_t
1388 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1389                           void *arg, uint32_t evt)
1390 {
1391         struct lpfc_iocbq *cmdiocb;
1392
1393         cmdiocb = (struct lpfc_iocbq *) arg;
1394
1395         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1396         return ndlp->nlp_state;
1397 }
1398
1399 static uint32_t
1400 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1401                          void *arg, uint32_t evt)
1402 {
1403         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1404
1405         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1406         return ndlp->nlp_state;
1407 }
1408
1409 static uint32_t
1410 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1411                          void *arg, uint32_t evt)
1412 {
1413         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1414
1415         /* Software abort outstanding PRLI before sending acc */
1416         lpfc_els_abort(vport->phba, ndlp);
1417
1418         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1419         return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1424                            void *arg, uint32_t evt)
1425 {
1426         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1427
1428         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1429         return ndlp->nlp_state;
1430 }
1431
1432 /* This routine is envoked when we rcv a PRLO request from a nport
1433  * we are logged into.  We should send back a PRLO rsp setting the
1434  * appropriate bits.
1435  * NEXT STATE = PRLI_ISSUE
1436  */
1437 static uint32_t
1438 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1439                          void *arg, uint32_t evt)
1440 {
1441         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1442
1443         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1444         return ndlp->nlp_state;
1445 }
1446
1447 static uint32_t
1448 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1449                           void *arg, uint32_t evt)
1450 {
1451         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1452         struct lpfc_iocbq *cmdiocb, *rspiocb;
1453         struct lpfc_hba   *phba = vport->phba;
1454         IOCB_t *irsp;
1455         PRLI *npr;
1456
1457         cmdiocb = (struct lpfc_iocbq *) arg;
1458         rspiocb = cmdiocb->context_un.rsp_iocb;
1459         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1460
1461         irsp = &rspiocb->iocb;
1462         if (irsp->ulpStatus) {
1463                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1464                     vport->cfg_restrict_login) {
1465                         goto out;
1466                 }
1467                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1468                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1469                 return ndlp->nlp_state;
1470         }
1471
1472         /* Check out PRLI rsp */
1473         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1474         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1475         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1476             (npr->prliType == PRLI_FCP_TYPE)) {
1477                 if (npr->initiatorFunc)
1478                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1479                 if (npr->targetFunc)
1480                         ndlp->nlp_type |= NLP_FCP_TARGET;
1481                 if (npr->Retry)
1482                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1483         }
1484         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1485             (vport->port_type == LPFC_NPIV_PORT) &&
1486              vport->cfg_restrict_login) {
1487 out:
1488                 spin_lock_irq(shost->host_lock);
1489                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1490                 spin_unlock_irq(shost->host_lock);
1491                 lpfc_issue_els_logo(vport, ndlp, 0);
1492
1493                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1494                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1495                 return ndlp->nlp_state;
1496         }
1497
1498         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1499         if (ndlp->nlp_type & NLP_FCP_TARGET)
1500                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1501         else
1502                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1503         return ndlp->nlp_state;
1504 }
1505
1506 /*! lpfc_device_rm_prli_issue
1507  *
1508  * \pre
1509  * \post
1510  * \param   phba
1511  * \param   ndlp
1512  * \param   arg
1513  * \param   evt
1514  * \return  uint32_t
1515  *
1516  * \b Description:
1517  *    This routine is envoked when we a request to remove a nport we are in the
1518  *    process of PRLIing. We should software abort outstanding prli, unreg
1519  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1520  *    on plogi list so it can be freed when LOGO completes.
1521  *
1522  */
1523
1524 static uint32_t
1525 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1526                           void *arg, uint32_t evt)
1527 {
1528         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1529
1530         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1531                 spin_lock_irq(shost->host_lock);
1532                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1533                 spin_unlock_irq(shost->host_lock);
1534                 return ndlp->nlp_state;
1535         } else {
1536                 /* software abort outstanding PLOGI */
1537                 lpfc_els_abort(vport->phba, ndlp);
1538
1539                 lpfc_drop_node(vport, ndlp);
1540                 return NLP_STE_FREED_NODE;
1541         }
1542 }
1543
1544
1545 /*! lpfc_device_recov_prli_issue
1546  *
1547  * \pre
1548  * \post
1549  * \param   phba
1550  * \param   ndlp
1551  * \param   arg
1552  * \param   evt
1553  * \return  uint32_t
1554  *
1555  * \b Description:
1556  *    The routine is envoked when the state of a device is unknown, like
1557  *    during a link down. We should remove the nodelist entry from the
1558  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1559  *    outstanding PRLI command, then free the node entry.
1560  */
1561 static uint32_t
1562 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1563                              struct lpfc_nodelist *ndlp,
1564                              void *arg,
1565                              uint32_t evt)
1566 {
1567         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568         struct lpfc_hba  *phba = vport->phba;
1569
1570         /* Don't do anything that will mess up processing of the
1571          * previous RSCN.
1572          */
1573         if (vport->fc_flag & FC_RSCN_DEFERRED)
1574                 return ndlp->nlp_state;
1575
1576         /* software abort outstanding PRLI */
1577         lpfc_els_abort(phba, ndlp);
1578
1579         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1580         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1581         spin_lock_irq(shost->host_lock);
1582         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1583         spin_unlock_irq(shost->host_lock);
1584         lpfc_disc_set_adisc(vport, ndlp);
1585         return ndlp->nlp_state;
1586 }
1587
1588 static uint32_t
1589 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1590                           void *arg, uint32_t evt)
1591 {
1592         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1593
1594         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1595         return ndlp->nlp_state;
1596 }
1597
1598 static uint32_t
1599 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1600                          void *arg, uint32_t evt)
1601 {
1602         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1603
1604         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1605         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1606         return ndlp->nlp_state;
1607 }
1608
1609 static uint32_t
1610 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1611                          void *arg, uint32_t evt)
1612 {
1613         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1614
1615         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1616         return ndlp->nlp_state;
1617 }
1618
1619 static uint32_t
1620 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1621                            void *arg, uint32_t evt)
1622 {
1623         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1624
1625         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1626         return ndlp->nlp_state;
1627 }
1628
1629 static uint32_t
1630 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1631                          void *arg, uint32_t evt)
1632 {
1633         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1634
1635         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1636         return ndlp->nlp_state;
1637 }
1638
1639 static uint32_t
1640 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1641                              struct lpfc_nodelist *ndlp,
1642                              void *arg,
1643                              uint32_t evt)
1644 {
1645         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1646
1647         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1648         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1649         spin_lock_irq(shost->host_lock);
1650         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1651         spin_unlock_irq(shost->host_lock);
1652         lpfc_disc_set_adisc(vport, ndlp);
1653
1654         return ndlp->nlp_state;
1655 }
1656
1657 static uint32_t
1658 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1659                            void *arg, uint32_t evt)
1660 {
1661         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1662
1663         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1664         return ndlp->nlp_state;
1665 }
1666
1667 static uint32_t
1668 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1669                           void *arg, uint32_t evt)
1670 {
1671         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1672
1673         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1674         return ndlp->nlp_state;
1675 }
1676
1677 static uint32_t
1678 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1679                           void *arg, uint32_t evt)
1680 {
1681         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1682
1683         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1684         return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1689                             struct lpfc_nodelist *ndlp,
1690                             void *arg, uint32_t evt)
1691 {
1692         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1693
1694         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1695         return ndlp->nlp_state;
1696 }
1697
1698 static uint32_t
1699 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1700                           void *arg, uint32_t evt)
1701 {
1702         struct lpfc_hba  *phba = vport->phba;
1703         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1704
1705         /* flush the target */
1706         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1707                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1708
1709         /* Treat like rcv logo */
1710         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1711         return ndlp->nlp_state;
1712 }
1713
1714 static uint32_t
1715 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1716                               struct lpfc_nodelist *ndlp,
1717                               void *arg,
1718                               uint32_t evt)
1719 {
1720         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1721
1722         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1723         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1724         spin_lock_irq(shost->host_lock);
1725         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1726         spin_unlock_irq(shost->host_lock);
1727         lpfc_disc_set_adisc(vport, ndlp);
1728         return ndlp->nlp_state;
1729 }
1730
1731 static uint32_t
1732 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1733                         void *arg, uint32_t evt)
1734 {
1735         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1736         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1737
1738         /* Ignore PLOGI if we have an outstanding LOGO */
1739         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1740                 return ndlp->nlp_state;
1741         }
1742
1743         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1744                 spin_lock_irq(shost->host_lock);
1745                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1746                 spin_unlock_irq(shost->host_lock);
1747                 return ndlp->nlp_state;
1748         }
1749
1750         /* send PLOGI immediately, move to PLOGI issue state */
1751         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1752                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1753                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1754                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1755         }
1756
1757         return ndlp->nlp_state;
1758 }
1759
1760 static uint32_t
1761 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1762                        void *arg, uint32_t evt)
1763 {
1764         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1765         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1766         struct ls_rjt     stat;
1767
1768         memset(&stat, 0, sizeof (struct ls_rjt));
1769         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1770         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1771         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1772
1773         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1774                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1775                         spin_lock_irq(shost->host_lock);
1776                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1777                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1778                         spin_unlock_irq(shost->host_lock);
1779                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1780                         lpfc_issue_els_adisc(vport, ndlp, 0);
1781                 } else {
1782                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1783                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1784                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1785                 }
1786         }
1787         return ndlp->nlp_state;
1788 }
1789
1790 static uint32_t
1791 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1792                        void *arg, uint32_t evt)
1793 {
1794         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1795
1796         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1797         return ndlp->nlp_state;
1798 }
1799
1800 static uint32_t
1801 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1802                          void *arg, uint32_t evt)
1803 {
1804         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1805
1806         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1807
1808         /*
1809          * Do not start discovery if discovery is about to start
1810          * or discovery in progress for this node. Starting discovery
1811          * here will affect the counting of discovery threads.
1812          */
1813         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1814             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1815                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1816                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1817                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1818                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1819                         lpfc_issue_els_adisc(vport, ndlp, 0);
1820                 } else {
1821                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1822                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1823                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1824                 }
1825         }
1826         return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831                        void *arg, uint32_t evt)
1832 {
1833         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1834         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1835
1836         spin_lock_irq(shost->host_lock);
1837         ndlp->nlp_flag |= NLP_LOGO_ACC;
1838         spin_unlock_irq(shost->host_lock);
1839
1840         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1841
1842         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1843                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1844                 spin_lock_irq(shost->host_lock);
1845                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1846                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1847                 spin_unlock_irq(shost->host_lock);
1848                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1849         } else {
1850                 spin_lock_irq(shost->host_lock);
1851                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1852                 spin_unlock_irq(shost->host_lock);
1853         }
1854         return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859                          void *arg, uint32_t evt)
1860 {
1861         struct lpfc_iocbq *cmdiocb, *rspiocb;
1862         IOCB_t *irsp;
1863
1864         cmdiocb = (struct lpfc_iocbq *) arg;
1865         rspiocb = cmdiocb->context_un.rsp_iocb;
1866
1867         irsp = &rspiocb->iocb;
1868         if (irsp->ulpStatus) {
1869                 ndlp->nlp_flag |= NLP_DEFER_RM;
1870                 return NLP_STE_FREED_NODE;
1871         }
1872         return ndlp->nlp_state;
1873 }
1874
1875 static uint32_t
1876 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1877                         void *arg, uint32_t evt)
1878 {
1879         struct lpfc_iocbq *cmdiocb, *rspiocb;
1880         IOCB_t *irsp;
1881
1882         cmdiocb = (struct lpfc_iocbq *) arg;
1883         rspiocb = cmdiocb->context_un.rsp_iocb;
1884
1885         irsp = &rspiocb->iocb;
1886         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1887                 lpfc_drop_node(vport, ndlp);
1888                 return NLP_STE_FREED_NODE;
1889         }
1890         return ndlp->nlp_state;
1891 }
1892
1893 static uint32_t
1894 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1895                         void *arg, uint32_t evt)
1896 {
1897         lpfc_unreg_rpi(vport, ndlp);
1898         /* This routine does nothing, just return the current state */
1899         return ndlp->nlp_state;
1900 }
1901
1902 static uint32_t
1903 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1904                          void *arg, uint32_t evt)
1905 {
1906         struct lpfc_iocbq *cmdiocb, *rspiocb;
1907         IOCB_t *irsp;
1908
1909         cmdiocb = (struct lpfc_iocbq *) arg;
1910         rspiocb = cmdiocb->context_un.rsp_iocb;
1911
1912         irsp = &rspiocb->iocb;
1913         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1914                 lpfc_drop_node(vport, ndlp);
1915                 return NLP_STE_FREED_NODE;
1916         }
1917         return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1922                             struct lpfc_nodelist *ndlp,
1923                             void *arg, uint32_t evt)
1924 {
1925         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1926         MAILBOX_t    *mb = &pmb->mb;
1927
1928         if (!mb->mbxStatus)
1929                 ndlp->nlp_rpi = mb->un.varWords[0];
1930         else {
1931                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1932                         lpfc_drop_node(vport, ndlp);
1933                         return NLP_STE_FREED_NODE;
1934                 }
1935         }
1936         return ndlp->nlp_state;
1937 }
1938
1939 static uint32_t
1940 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1941                         void *arg, uint32_t evt)
1942 {
1943         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1944
1945         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1946                 spin_lock_irq(shost->host_lock);
1947                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1948                 spin_unlock_irq(shost->host_lock);
1949                 return ndlp->nlp_state;
1950         }
1951         lpfc_drop_node(vport, ndlp);
1952         return NLP_STE_FREED_NODE;
1953 }
1954
1955 static uint32_t
1956 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1957                            void *arg, uint32_t evt)
1958 {
1959         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1960
1961         /* Don't do anything that will mess up processing of the
1962          * previous RSCN.
1963          */
1964         if (vport->fc_flag & FC_RSCN_DEFERRED)
1965                 return ndlp->nlp_state;
1966
1967         spin_lock_irq(shost->host_lock);
1968         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1969         spin_unlock_irq(shost->host_lock);
1970         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1971                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1972         }
1973         return ndlp->nlp_state;
1974 }
1975
1976
1977 /* This next section defines the NPort Discovery State Machine */
1978
1979 /* There are 4 different double linked lists nodelist entries can reside on.
1980  * The plogi list and adisc list are used when Link Up discovery or RSCN
1981  * processing is needed. Each list holds the nodes that we will send PLOGI
1982  * or ADISC on. These lists will keep track of what nodes will be effected
1983  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1984  * The unmapped_list will contain all nodes that we have successfully logged
1985  * into at the Fibre Channel level. The mapped_list will contain all nodes
1986  * that are mapped FCP targets.
1987  */
1988 /*
1989  * The bind list is a list of undiscovered (potentially non-existent) nodes
1990  * that we have saved binding information on. This information is used when
1991  * nodes transition from the unmapped to the mapped list.
1992  */
1993 /* For UNUSED_NODE state, the node has just been allocated .
1994  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1995  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1996  * and put on the unmapped list. For ADISC processing, the node is taken off
1997  * the ADISC list and placed on either the mapped or unmapped list (depending
1998  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1999  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2000  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2001  * node, the node is taken off the unmapped list. The binding list is checked
2002  * for a valid binding, or a binding is automatically assigned. If binding
2003  * assignment is unsuccessful, the node is left on the unmapped list. If
2004  * binding assignment is successful, the associated binding list entry (if
2005  * any) is removed, and the node is placed on the mapped list.
2006  */
2007 /*
2008  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2009  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2010  * expire, all effected nodes will receive a DEVICE_RM event.
2011  */
2012 /*
2013  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2014  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2015  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2016  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2017  * we will first process the ADISC list.  32 entries are processed initially and
2018  * ADISC is initited for each one.  Completions / Events for each node are
2019  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2020  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2021  * waiting, and the ADISC list count is identically 0, then we are done. For
2022  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2023  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2024  * list.  32 entries are processed initially and PLOGI is initited for each one.
2025  * Completions / Events for each node are funnelled thru the state machine.  As
2026  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2027  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2028  * indentically 0, then we are done. We have now completed discovery / RSCN
2029  * handling. Upon completion, ALL nodes should be on either the mapped or
2030  * unmapped lists.
2031  */
2032
2033 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2034      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2035         /* Action routine                  Event       Current State  */
2036         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2037         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2038         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2039         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2040         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2041         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2042         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2043         lpfc_disc_illegal,              /* CMPL_PRLI       */
2044         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2045         lpfc_disc_illegal,              /* CMPL_ADISC      */
2046         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2047         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2048         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2049
2050         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2051         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2052         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2053         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2054         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2055         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2056         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2057         lpfc_disc_illegal,              /* CMPL_PRLI       */
2058         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2059         lpfc_disc_illegal,              /* CMPL_ADISC      */
2060         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2061         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2062         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2063
2064         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2065         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2066         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2067         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2068         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2069         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2070         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2071         lpfc_disc_illegal,              /* CMPL_PRLI       */
2072         lpfc_disc_illegal,              /* CMPL_LOGO       */
2073         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2074         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2075         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2076         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2077
2078         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2079         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2080         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2081         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2082         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2083         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2084         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2085         lpfc_disc_illegal,              /* CMPL_PRLI       */
2086         lpfc_disc_illegal,              /* CMPL_LOGO       */
2087         lpfc_disc_illegal,              /* CMPL_ADISC      */
2088         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2089         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2090         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2091
2092         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2093         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2094         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2095         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2096         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2097         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2098         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2099         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2100         lpfc_disc_illegal,              /* CMPL_LOGO       */
2101         lpfc_disc_illegal,              /* CMPL_ADISC      */
2102         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2103         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2104         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2105
2106         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2107         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2108         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2109         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2110         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2111         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2112         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2113         lpfc_disc_illegal,              /* CMPL_PRLI       */
2114         lpfc_disc_illegal,              /* CMPL_LOGO       */
2115         lpfc_disc_illegal,              /* CMPL_ADISC      */
2116         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2117         lpfc_disc_illegal,              /* DEVICE_RM       */
2118         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2119
2120         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2121         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2122         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2123         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2124         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2125         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2126         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2127         lpfc_disc_illegal,              /* CMPL_PRLI       */
2128         lpfc_disc_illegal,              /* CMPL_LOGO       */
2129         lpfc_disc_illegal,              /* CMPL_ADISC      */
2130         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2131         lpfc_disc_illegal,              /* DEVICE_RM       */
2132         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2133
2134         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2135         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2136         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2137         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2138         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2139         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2140         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2141         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2142         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2143         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2144         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2145         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2146         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2147 };
2148
2149 int
2150 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2151                         void *arg, uint32_t evt)
2152 {
2153         uint32_t cur_state, rc;
2154         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2155                          uint32_t);
2156         uint32_t got_ndlp = 0;
2157
2158         if (lpfc_nlp_get(ndlp))
2159                 got_ndlp = 1;
2160
2161         cur_state = ndlp->nlp_state;
2162
2163         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2164         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2165                          "0211 DSM in event x%x on NPort x%x in "
2166                          "state %d Data: x%x\n",
2167                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2168
2169         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2170                  "DSM in:          evt:%d ste:%d did:x%x",
2171                 evt, cur_state, ndlp->nlp_DID);
2172
2173         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2174         rc = (func) (vport, ndlp, arg, evt);
2175
2176         /* DSM out state <rc> on NPort <nlp_DID> */
2177         if (got_ndlp) {
2178                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2179                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2180                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2181
2182                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2183                         "DSM out:         ste:%d did:x%x flg:x%x",
2184                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2185                 /* Decrement the ndlp reference count held for this function */
2186                 lpfc_nlp_put(ndlp);
2187         } else {
2188                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2189                         "0212 DSM out state %d on NPort free\n", rc);
2190
2191                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2192                         "DSM out:         ste:%d did:x%x flg:x%x",
2193                         rc, 0, 0);
2194         }
2195
2196         return rc;
2197 }