SAFE public projects git trees. - safe/jmp/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         /* Check config parameter use-adisc or FCP-2 */
 649         if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 650             ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
 651                 spin_lock_irq(shost->host_lock);
 652                 ndlp->nlp_flag |= NLP_NPR_ADISC;
 653                 spin_unlock_irq(shost->host_lock);
 654                 return 1;
 655         }
 656         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 657         lpfc_unreg_rpi(vport, ndlp);
 658         return 0;
 659 }
 660
 661 static uint32_t
 662 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 663                   void *arg, uint32_t evt)
 664 {
 665         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 666                          "0271 Illegal State Transition: node x%x "
 667                          "event x%x, state x%x Data: x%x x%x\n",
 668                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 669                          ndlp->nlp_flag);
 670         return ndlp->nlp_state;
 671 }
 672
 673 static uint32_t
 674 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 675                   void *arg, uint32_t evt)
 676 {
 677         /* This transition is only legal if we previously
 678          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 679          * working on the same NPortID, do nothing for this thread
 680          * to stop it.
 681          */
 682         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 683                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 684                          "0272 Illegal State Transition: node x%x "
 685                          "event x%x, state x%x Data: x%x x%x\n",
 686                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 687                          ndlp->nlp_flag);
 688         }
 689         return ndlp->nlp_state;
 690 }
 691
 692 /* Start of Discovery State Machine routines */
 693
 694 static uint32_t
 695 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 696                            void *arg, uint32_t evt)
 697 {
 698         struct lpfc_iocbq *cmdiocb;
 699
 700         cmdiocb = (struct lpfc_iocbq *) arg;
 701
 702         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 703                 return ndlp->nlp_state;
 704         }
 705         return NLP_STE_FREED_NODE;
 706 }
 707
 708 static uint32_t
 709 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 710                          void *arg, uint32_t evt)
 711 {
 712         lpfc_issue_els_logo(vport, ndlp, 0);
 713         return ndlp->nlp_state;
 714 }
 715
 716 static uint32_t
 717 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 718                           void *arg, uint32_t evt)
 719 {
 720         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 721         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 722
 723         spin_lock_irq(shost->host_lock);
 724         ndlp->nlp_flag |= NLP_LOGO_ACC;
 725         spin_unlock_irq(shost->host_lock);
 726         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 727
 728         return ndlp->nlp_state;
 729 }
 730
 731 static uint32_t
 732 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 733                            void *arg, uint32_t evt)
 734 {
 735         return NLP_STE_FREED_NODE;
 736 }
 737
 738 static uint32_t
 739 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 740                            void *arg, uint32_t evt)
 741 {
 742         return NLP_STE_FREED_NODE;
 743 }
 744
 745 static uint32_t
 746 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 747                            void *arg, uint32_t evt)
 748 {
 749         struct lpfc_hba   *phba = vport->phba;
 750         struct lpfc_iocbq *cmdiocb = arg;
 751         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 752         uint32_t *lp = (uint32_t *) pcmd->virt;
 753         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 754         struct ls_rjt stat;
 755         int port_cmp;
 756
 757         memset(&stat, 0, sizeof (struct ls_rjt));
 758
 759         /* For a PLOGI, we only accept if our portname is less
 760          * than the remote portname.
 761          */
 762         phba->fc_stat.elsLogiCol++;
 763         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 764                           sizeof(struct lpfc_name));
 765
 766         if (port_cmp >= 0) {
 767                 /* Reject this request because the remote node will accept
 768                    ours */
 769                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 770                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 771                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 772                         NULL);
 773         } else {
 774                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
 775         } /* If our portname was less */
 776
 777         return ndlp->nlp_state;
 778 }
 779
 780 static uint32_t
 781 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 782                           void *arg, uint32_t evt)
 783 {
 784         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 785         struct ls_rjt     stat;
 786
 787         memset(&stat, 0, sizeof (struct ls_rjt));
 788         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 789         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 790         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 791         return ndlp->nlp_state;
 792 }
 793
 794 static uint32_t
 795 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 796                           void *arg, uint32_t evt)
 797 {
 798         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 799
 800                                 /* software abort outstanding PLOGI */
 801         lpfc_els_abort(vport->phba, ndlp);
 802
 803         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 804         return ndlp->nlp_state;
 805 }
 806
 807 static uint32_t
 808 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 809                          void *arg, uint32_t evt)
 810 {
 811         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 812         struct lpfc_hba   *phba = vport->phba;
 813         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 814
 815         /* software abort outstanding PLOGI */
 816         lpfc_els_abort(phba, ndlp);
 817
 818         if (evt == NLP_EVT_RCV_LOGO) {
 819                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 820         } else {
 821                 lpfc_issue_els_logo(vport, ndlp, 0);
 822         }
 823
 824         /* Put ndlp in npr state set plogi timer for 1 sec */
 825         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
 826         spin_lock_irq(shost->host_lock);
 827         ndlp->nlp_flag |= NLP_DELAY_TMO;
 828         spin_unlock_irq(shost->host_lock);
 829         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 830         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
 831         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 832
 833         return ndlp->nlp_state;
 834 }
 835
 836 static uint32_t
 837 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 838                             struct lpfc_nodelist *ndlp,
 839                             void *arg,
 840                             uint32_t evt)
 841 {
 842         struct lpfc_hba    *phba = vport->phba;
 843         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 844         struct lpfc_iocbq  *cmdiocb, *rspiocb;
 845         struct lpfc_dmabuf *pcmd, *prsp, *mp;
 846         uint32_t *lp;
 847         IOCB_t *irsp;
 848         struct serv_parm *sp;
 849         LPFC_MBOXQ_t *mbox;
 850
 851         cmdiocb = (struct lpfc_iocbq *) arg;
 852         rspiocb = cmdiocb->context_un.rsp_iocb;
 853
 854         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
 855                 /* Recovery from PLOGI collision logic */
 856                 return ndlp->nlp_state;
 857         }
 858
 859         irsp = &rspiocb->iocb;
 860
 861         if (irsp->ulpStatus)
 862                 goto out;
 863
 864         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 865
 866         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
 867
 868         lp = (uint32_t *) prsp->virt;
 869         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 870         if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
 871             wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 872                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 873                                  "0142 PLOGI RSP: Invalid WWN.\n");
 874                 goto out;
 875         }
 876         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
 877                 goto out;
 878         /* PLOGI chkparm OK */
 879         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 880                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
 881                          ndlp->nlp_DID, ndlp->nlp_state,
 882                          ndlp->nlp_flag, ndlp->nlp_rpi);
 883         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
 884                 ndlp->nlp_fcp_info |= CLASS2;
 885         else
 886                 ndlp->nlp_fcp_info |= CLASS3;
 887
 888         ndlp->nlp_class_sup = 0;
 889         if (sp->cls1.classValid)
 890                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 891         if (sp->cls2.classValid)
 892                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 893         if (sp->cls3.classValid)
 894                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 895         if (sp->cls4.classValid)
 896                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 897         ndlp->nlp_maxframe =
 898                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 899
 900         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 901         if (!mbox) {
 902                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 903                         "0133 PLOGI: no memory for reg_login "
 904                         "Data: x%x x%x x%x x%x\n",
 905                         ndlp->nlp_DID, ndlp->nlp_state,
 906                         ndlp->nlp_flag, ndlp->nlp_rpi);
 907                 goto out;
 908         }
 909
 910         lpfc_unreg_rpi(vport, ndlp);
 911
 912         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
 913                            (uint8_t *) sp, mbox, 0) == 0) {
 914                 switch (ndlp->nlp_DID) {
 915                 case NameServer_DID:
 916                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
 917                         break;
 918                 case FDMI_DID:
 919                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
 920                         break;
 921                 default:
 922                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 923                 }
 924                 mbox->context2 = lpfc_nlp_get(ndlp);
 925                 mbox->vport = vport;
 926                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
 927                     != MBX_NOT_FINISHED) {
 928                         lpfc_nlp_set_state(vport, ndlp,
 929                                            NLP_STE_REG_LOGIN_ISSUE);
 930                         return ndlp->nlp_state;
 931                 }
 932                 /* decrement node reference count to the failed mbox
 933                  * command
 934                  */
 935                 lpfc_nlp_put(ndlp);
 936                 mp = (struct lpfc_dmabuf *) mbox->context1;
 937                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 938                 kfree(mp);
 939                 mempool_free(mbox, phba->mbox_mem_pool);
 940
 941                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 942                                  "0134 PLOGI: cannot issue reg_login "
 943                                  "Data: x%x x%x x%x x%x\n",
 944                                  ndlp->nlp_DID, ndlp->nlp_state,
 945                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 946         } else {
 947                 mempool_free(mbox, phba->mbox_mem_pool);
 948
 949                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 950                                  "0135 PLOGI: cannot format reg_login "
 951                                  "Data: x%x x%x x%x x%x\n",
 952                                  ndlp->nlp_DID, ndlp->nlp_state,
 953                                  ndlp->nlp_flag, ndlp->nlp_rpi);
 954         }
 955
 956
 957 out:
 958         if (ndlp->nlp_DID == NameServer_DID) {
 959                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 960                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 961                                  "0261 Cannot Register NameServer login\n");
 962         }
 963
 964         spin_lock_irq(shost->host_lock);
 965         ndlp->nlp_flag |= NLP_DEFER_RM;
 966         spin_unlock_irq(shost->host_lock);
 967         return NLP_STE_FREED_NODE;
 968 }
 969
 970 static uint32_t
 971 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 972                            void *arg, uint32_t evt)
 973 {
 974         return ndlp->nlp_state;
 975 }
 976
 977 static uint32_t
 978 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
 979         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
 980 {
 981         return ndlp->nlp_state;
 982 }
 983
 984 static uint32_t
 985 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 986                            void *arg, uint32_t evt)
 987 {
 988         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 989
 990         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
 991                 spin_lock_irq(shost->host_lock);
 992                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
 993                 spin_unlock_irq(shost->host_lock);
 994                 return ndlp->nlp_state;
 995         } else {
 996                 /* software abort outstanding PLOGI */
 997                 lpfc_els_abort(vport->phba, ndlp);
 998
 999                 lpfc_drop_node(vport, ndlp);
1000                 return NLP_STE_FREED_NODE;
1001         }
1002 }
1003
1004 static uint32_t
1005 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1006                               struct lpfc_nodelist *ndlp,
1007                               void *arg,
1008                               uint32_t evt)
1009 {
1010         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1011         struct lpfc_hba  *phba = vport->phba;
1012
1013         /* Don't do anything that will mess up processing of the
1014          * previous RSCN.
1015          */
1016         if (vport->fc_flag & FC_RSCN_DEFERRED)
1017                 return ndlp->nlp_state;
1018
1019         /* software abort outstanding PLOGI */
1020         lpfc_els_abort(phba, ndlp);
1021
1022         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1023         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1024         spin_lock_irq(shost->host_lock);
1025         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1026         spin_unlock_irq(shost->host_lock);
1027
1028         return ndlp->nlp_state;
1029 }
1030
1031 static uint32_t
1032 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1033                            void *arg, uint32_t evt)
1034 {
1035         struct lpfc_hba   *phba = vport->phba;
1036         struct lpfc_iocbq *cmdiocb;
1037
1038         /* software abort outstanding ADISC */
1039         lpfc_els_abort(phba, ndlp);
1040
1041         cmdiocb = (struct lpfc_iocbq *) arg;
1042
1043         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
1044                 return ndlp->nlp_state;
1045
1046         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1047         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1048         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1049
1050         return ndlp->nlp_state;
1051 }
1052
1053 static uint32_t
1054 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1055                           void *arg, uint32_t evt)
1056 {
1057         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1058
1059         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1060         return ndlp->nlp_state;
1061 }
1062
1063 static uint32_t
1064 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1065                           void *arg, uint32_t evt)
1066 {
1067         struct lpfc_hba *phba = vport->phba;
1068         struct lpfc_iocbq *cmdiocb;
1069
1070         cmdiocb = (struct lpfc_iocbq *) arg;
1071
1072         /* software abort outstanding ADISC */
1073         lpfc_els_abort(phba, ndlp);
1074
1075         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1076         return ndlp->nlp_state;
1077 }
1078
1079 static uint32_t
1080 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1081                             struct lpfc_nodelist *ndlp,
1082                             void *arg, uint32_t evt)
1083 {
1084         struct lpfc_iocbq *cmdiocb;
1085
1086         cmdiocb = (struct lpfc_iocbq *) arg;
1087
1088         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1089         return ndlp->nlp_state;
1090 }
1091
1092 static uint32_t
1093 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1094                           void *arg, uint32_t evt)
1095 {
1096         struct lpfc_iocbq *cmdiocb;
1097
1098         cmdiocb = (struct lpfc_iocbq *) arg;
1099
1100         /* Treat like rcv logo */
1101         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1102         return ndlp->nlp_state;
1103 }
1104
1105 static uint32_t
1106 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1107                             struct lpfc_nodelist *ndlp,
1108                             void *arg, uint32_t evt)
1109 {
1110         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1111         struct lpfc_hba   *phba = vport->phba;
1112         struct lpfc_iocbq *cmdiocb, *rspiocb;
1113         IOCB_t *irsp;
1114         ADISC *ap;
1115
1116         cmdiocb = (struct lpfc_iocbq *) arg;
1117         rspiocb = cmdiocb->context_un.rsp_iocb;
1118
1119         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1120         irsp = &rspiocb->iocb;
1121
1122         if ((irsp->ulpStatus) ||
1123             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1124                 /* 1 sec timeout */
1125                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1126                 spin_lock_irq(shost->host_lock);
1127                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1128                 spin_unlock_irq(shost->host_lock);
1129                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1130
1131                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1132                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1133
1134                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1135                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1136                 lpfc_unreg_rpi(vport, ndlp);
1137                 return ndlp->nlp_state;
1138         }
1139
1140         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1141                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1142                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1143         } else {
1144                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1145                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1146         }
1147         return ndlp->nlp_state;
1148 }
1149
1150 static uint32_t
1151 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1152                            void *arg, uint32_t evt)
1153 {
1154         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1155
1156         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1157                 spin_lock_irq(shost->host_lock);
1158                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1159                 spin_unlock_irq(shost->host_lock);
1160                 return ndlp->nlp_state;
1161         } else {
1162                 /* software abort outstanding ADISC */
1163                 lpfc_els_abort(vport->phba, ndlp);
1164
1165                 lpfc_drop_node(vport, ndlp);
1166                 return NLP_STE_FREED_NODE;
1167         }
1168 }
1169
1170 static uint32_t
1171 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1172                               struct lpfc_nodelist *ndlp,
1173                               void *arg,
1174                               uint32_t evt)
1175 {
1176         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1177         struct lpfc_hba  *phba = vport->phba;
1178
1179         /* Don't do anything that will mess up processing of the
1180          * previous RSCN.
1181          */
1182         if (vport->fc_flag & FC_RSCN_DEFERRED)
1183                 return ndlp->nlp_state;
1184
1185         /* software abort outstanding ADISC */
1186         lpfc_els_abort(phba, ndlp);
1187
1188         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1189         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1190         spin_lock_irq(shost->host_lock);
1191         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1192         spin_unlock_irq(shost->host_lock);
1193         lpfc_disc_set_adisc(vport, ndlp);
1194         return ndlp->nlp_state;
1195 }
1196
1197 static uint32_t
1198 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1199                               struct lpfc_nodelist *ndlp,
1200                               void *arg,
1201                               uint32_t evt)
1202 {
1203         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1204
1205         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1206         return ndlp->nlp_state;
1207 }
1208
1209 static uint32_t
1210 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1211                              struct lpfc_nodelist *ndlp,
1212                              void *arg,
1213                              uint32_t evt)
1214 {
1215         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1216
1217         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1218         return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1223                              struct lpfc_nodelist *ndlp,
1224                              void *arg,
1225                              uint32_t evt)
1226 {
1227         struct lpfc_hba   *phba = vport->phba;
1228         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1229         LPFC_MBOXQ_t      *mb;
1230         LPFC_MBOXQ_t      *nextmb;
1231         struct lpfc_dmabuf *mp;
1232
1233         cmdiocb = (struct lpfc_iocbq *) arg;
1234
1235         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1236         if ((mb = phba->sli.mbox_active)) {
1237                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1238                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1239                         lpfc_nlp_put(ndlp);
1240                         mb->context2 = NULL;
1241                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1242                 }
1243         }
1244
1245         spin_lock_irq(&phba->hbalock);
1246         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1247                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1248                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1249                         mp = (struct lpfc_dmabuf *) (mb->context1);
1250                         if (mp) {
1251                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1252                                 kfree(mp);
1253                         }
1254                         lpfc_nlp_put(ndlp);
1255                         list_del(&mb->list);
1256                         mempool_free(mb, phba->mbox_mem_pool);
1257                 }
1258         }
1259         spin_unlock_irq(&phba->hbalock);
1260
1261         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1262         return ndlp->nlp_state;
1263 }
1264
1265 static uint32_t
1266 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1267                                struct lpfc_nodelist *ndlp,
1268                                void *arg,
1269                                uint32_t evt)
1270 {
1271         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1272
1273         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1274         return ndlp->nlp_state;
1275 }
1276
1277 static uint32_t
1278 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1279                              struct lpfc_nodelist *ndlp,
1280                              void *arg,
1281                              uint32_t evt)
1282 {
1283         struct lpfc_iocbq *cmdiocb;
1284
1285         cmdiocb = (struct lpfc_iocbq *) arg;
1286         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1287         return ndlp->nlp_state;
1288 }
1289
1290 static uint32_t
1291 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1292                                   struct lpfc_nodelist *ndlp,
1293                                   void *arg,
1294                                   uint32_t evt)
1295 {
1296         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1297         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1298         MAILBOX_t *mb = &pmb->mb;
1299         uint32_t did  = mb->un.varWords[1];
1300
1301         if (mb->mbxStatus) {
1302                 /* RegLogin failed */
1303                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1304                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1305                                 did, mb->mbxStatus, vport->port_state);
1306                 /*
1307                  * If RegLogin failed due to lack of HBA resources do not
1308                  * retry discovery.
1309                  */
1310                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1311                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1312                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1313                         return ndlp->nlp_state;
1314                 }
1315
1316                 /* Put ndlp in npr state set plogi timer for 1 sec */
1317                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1318                 spin_lock_irq(shost->host_lock);
1319                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1320                 spin_unlock_irq(shost->host_lock);
1321                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1322
1323                 lpfc_issue_els_logo(vport, ndlp, 0);
1324                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1325                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1326                 return ndlp->nlp_state;
1327         }
1328
1329         ndlp->nlp_rpi = mb->un.varWords[0];
1330
1331         /* Only if we are not a fabric nport do we issue PRLI */
1332         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1333                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1334                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1335                 lpfc_issue_els_prli(vport, ndlp, 0);
1336         } else {
1337                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1338                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1339         }
1340         return ndlp->nlp_state;
1341 }
1342
1343 static uint32_t
1344 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1345                               struct lpfc_nodelist *ndlp,
1346                               void *arg,
1347                               uint32_t evt)
1348 {
1349         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1350
1351         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1352                 spin_lock_irq(shost->host_lock);
1353                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1354                 spin_unlock_irq(shost->host_lock);
1355                 return ndlp->nlp_state;
1356         } else {
1357                 lpfc_drop_node(vport, ndlp);
1358                 return NLP_STE_FREED_NODE;
1359         }
1360 }
1361
1362 static uint32_t
1363 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1364                                  struct lpfc_nodelist *ndlp,
1365                                  void *arg,
1366                                  uint32_t evt)
1367 {
1368         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1369
1370         /* Don't do anything that will mess up processing of the
1371          * previous RSCN.
1372          */
1373         if (vport->fc_flag & FC_RSCN_DEFERRED)
1374                 return ndlp->nlp_state;
1375
1376         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1377         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1378         spin_lock_irq(shost->host_lock);
1379         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1380         spin_unlock_irq(shost->host_lock);
1381         lpfc_disc_set_adisc(vport, ndlp);
1382         return ndlp->nlp_state;
1383 }
1384
1385 static uint32_t
1386 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1387                           void *arg, uint32_t evt)
1388 {
1389         struct lpfc_iocbq *cmdiocb;
1390
1391         cmdiocb = (struct lpfc_iocbq *) arg;
1392
1393         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1394         return ndlp->nlp_state;
1395 }
1396
1397 static uint32_t
1398 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1399                          void *arg, uint32_t evt)
1400 {
1401         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1402
1403         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1404         return ndlp->nlp_state;
1405 }
1406
1407 static uint32_t
1408 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1409                          void *arg, uint32_t evt)
1410 {
1411         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1412
1413         /* Software abort outstanding PRLI before sending acc */
1414         lpfc_els_abort(vport->phba, ndlp);
1415
1416         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1417         return ndlp->nlp_state;
1418 }
1419
1420 static uint32_t
1421 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1422                            void *arg, uint32_t evt)
1423 {
1424         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1425
1426         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1427         return ndlp->nlp_state;
1428 }
1429
1430 /* This routine is envoked when we rcv a PRLO request from a nport
1431  * we are logged into.  We should send back a PRLO rsp setting the
1432  * appropriate bits.
1433  * NEXT STATE = PRLI_ISSUE
1434  */
1435 static uint32_t
1436 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1437                          void *arg, uint32_t evt)
1438 {
1439         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1440
1441         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1442         return ndlp->nlp_state;
1443 }
1444
1445 static uint32_t
1446 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1447                           void *arg, uint32_t evt)
1448 {
1449         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1450         struct lpfc_iocbq *cmdiocb, *rspiocb;
1451         struct lpfc_hba   *phba = vport->phba;
1452         IOCB_t *irsp;
1453         PRLI *npr;
1454
1455         cmdiocb = (struct lpfc_iocbq *) arg;
1456         rspiocb = cmdiocb->context_un.rsp_iocb;
1457         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1458
1459         irsp = &rspiocb->iocb;
1460         if (irsp->ulpStatus) {
1461                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1462                     vport->cfg_restrict_login) {
1463                         goto out;
1464                 }
1465                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1466                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1467                 return ndlp->nlp_state;
1468         }
1469
1470         /* Check out PRLI rsp */
1471         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1472         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1473         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1474             (npr->prliType == PRLI_FCP_TYPE)) {
1475                 if (npr->initiatorFunc)
1476                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1477                 if (npr->targetFunc)
1478                         ndlp->nlp_type |= NLP_FCP_TARGET;
1479                 if (npr->Retry)
1480                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1481         }
1482         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1483             (vport->port_type == LPFC_NPIV_PORT) &&
1484              vport->cfg_restrict_login) {
1485 out:
1486                 spin_lock_irq(shost->host_lock);
1487                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1488                 spin_unlock_irq(shost->host_lock);
1489                 lpfc_issue_els_logo(vport, ndlp, 0);
1490
1491                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1492                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1493                 return ndlp->nlp_state;
1494         }
1495
1496         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1497         if (ndlp->nlp_type & NLP_FCP_TARGET)
1498                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1499         else
1500                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1501         return ndlp->nlp_state;
1502 }
1503
1504 /*! lpfc_device_rm_prli_issue
1505  *
1506  * \pre
1507  * \post
1508  * \param   phba
1509  * \param   ndlp
1510  * \param   arg
1511  * \param   evt
1512  * \return  uint32_t
1513  *
1514  * \b Description:
1515  *    This routine is envoked when we a request to remove a nport we are in the
1516  *    process of PRLIing. We should software abort outstanding prli, unreg
1517  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1518  *    on plogi list so it can be freed when LOGO completes.
1519  *
1520  */
1521
1522 static uint32_t
1523 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1524                           void *arg, uint32_t evt)
1525 {
1526         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1527
1528         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1529                 spin_lock_irq(shost->host_lock);
1530                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1531                 spin_unlock_irq(shost->host_lock);
1532                 return ndlp->nlp_state;
1533         } else {
1534                 /* software abort outstanding PLOGI */
1535                 lpfc_els_abort(vport->phba, ndlp);
1536
1537                 lpfc_drop_node(vport, ndlp);
1538                 return NLP_STE_FREED_NODE;
1539         }
1540 }
1541
1542
1543 /*! lpfc_device_recov_prli_issue
1544  *
1545  * \pre
1546  * \post
1547  * \param   phba
1548  * \param   ndlp
1549  * \param   arg
1550  * \param   evt
1551  * \return  uint32_t
1552  *
1553  * \b Description:
1554  *    The routine is envoked when the state of a device is unknown, like
1555  *    during a link down. We should remove the nodelist entry from the
1556  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1557  *    outstanding PRLI command, then free the node entry.
1558  */
1559 static uint32_t
1560 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1561                              struct lpfc_nodelist *ndlp,
1562                              void *arg,
1563                              uint32_t evt)
1564 {
1565         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1566         struct lpfc_hba  *phba = vport->phba;
1567
1568         /* Don't do anything that will mess up processing of the
1569          * previous RSCN.
1570          */
1571         if (vport->fc_flag & FC_RSCN_DEFERRED)
1572                 return ndlp->nlp_state;
1573
1574         /* software abort outstanding PRLI */
1575         lpfc_els_abort(phba, ndlp);
1576
1577         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1578         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1579         spin_lock_irq(shost->host_lock);
1580         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1581         spin_unlock_irq(shost->host_lock);
1582         lpfc_disc_set_adisc(vport, ndlp);
1583         return ndlp->nlp_state;
1584 }
1585
1586 static uint32_t
1587 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1588                           void *arg, uint32_t evt)
1589 {
1590         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1591
1592         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1593         return ndlp->nlp_state;
1594 }
1595
1596 static uint32_t
1597 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1598                          void *arg, uint32_t evt)
1599 {
1600         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1601
1602         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1603         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1604         return ndlp->nlp_state;
1605 }
1606
1607 static uint32_t
1608 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1609                          void *arg, uint32_t evt)
1610 {
1611         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1612
1613         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1614         return ndlp->nlp_state;
1615 }
1616
1617 static uint32_t
1618 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1619                            void *arg, uint32_t evt)
1620 {
1621         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1622
1623         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1624         return ndlp->nlp_state;
1625 }
1626
1627 static uint32_t
1628 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1629                          void *arg, uint32_t evt)
1630 {
1631         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1632
1633         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1634         return ndlp->nlp_state;
1635 }
1636
1637 static uint32_t
1638 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1639                              struct lpfc_nodelist *ndlp,
1640                              void *arg,
1641                              uint32_t evt)
1642 {
1643         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1644
1645         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1646         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1647         spin_lock_irq(shost->host_lock);
1648         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1649         spin_unlock_irq(shost->host_lock);
1650         lpfc_disc_set_adisc(vport, ndlp);
1651
1652         return ndlp->nlp_state;
1653 }
1654
1655 static uint32_t
1656 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1657                            void *arg, uint32_t evt)
1658 {
1659         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1660
1661         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1662         return ndlp->nlp_state;
1663 }
1664
1665 static uint32_t
1666 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1667                           void *arg, uint32_t evt)
1668 {
1669         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1670
1671         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1672         return ndlp->nlp_state;
1673 }
1674
1675 static uint32_t
1676 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1677                           void *arg, uint32_t evt)
1678 {
1679         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1680
1681         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1682         return ndlp->nlp_state;
1683 }
1684
1685 static uint32_t
1686 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1687                             struct lpfc_nodelist *ndlp,
1688                             void *arg, uint32_t evt)
1689 {
1690         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1691
1692         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1693         return ndlp->nlp_state;
1694 }
1695
1696 static uint32_t
1697 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1698                           void *arg, uint32_t evt)
1699 {
1700         struct lpfc_hba  *phba = vport->phba;
1701         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1702
1703         /* flush the target */
1704         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1705                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1706
1707         /* Treat like rcv logo */
1708         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1709         return ndlp->nlp_state;
1710 }
1711
1712 static uint32_t
1713 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1714                               struct lpfc_nodelist *ndlp,
1715                               void *arg,
1716                               uint32_t evt)
1717 {
1718         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1719
1720         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1721         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1722         spin_lock_irq(shost->host_lock);
1723         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1724         spin_unlock_irq(shost->host_lock);
1725         lpfc_disc_set_adisc(vport, ndlp);
1726         return ndlp->nlp_state;
1727 }
1728
1729 static uint32_t
1730 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1731                         void *arg, uint32_t evt)
1732 {
1733         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1734         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1735
1736         /* Ignore PLOGI if we have an outstanding LOGO */
1737         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1738                 return ndlp->nlp_state;
1739         }
1740
1741         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1742                 spin_lock_irq(shost->host_lock);
1743                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1744                 spin_unlock_irq(shost->host_lock);
1745                 return ndlp->nlp_state;
1746         }
1747
1748         /* send PLOGI immediately, move to PLOGI issue state */
1749         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1750                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1751                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1752                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1753         }
1754
1755         return ndlp->nlp_state;
1756 }
1757
1758 static uint32_t
1759 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1760                        void *arg, uint32_t evt)
1761 {
1762         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1763         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1764         struct ls_rjt     stat;
1765
1766         memset(&stat, 0, sizeof (struct ls_rjt));
1767         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1768         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1769         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1770
1771         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1772                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1773                         spin_lock_irq(shost->host_lock);
1774                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1775                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1776                         spin_unlock_irq(shost->host_lock);
1777                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1778                         lpfc_issue_els_adisc(vport, ndlp, 0);
1779                 } else {
1780                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1781                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1782                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1783                 }
1784         }
1785         return ndlp->nlp_state;
1786 }
1787
1788 static uint32_t
1789 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1790                        void *arg, uint32_t evt)
1791 {
1792         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1793
1794         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1795         return ndlp->nlp_state;
1796 }
1797
1798 static uint32_t
1799 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1800                          void *arg, uint32_t evt)
1801 {
1802         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1803
1804         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1805
1806         /*
1807          * Do not start discovery if discovery is about to start
1808          * or discovery in progress for this node. Starting discovery
1809          * here will affect the counting of discovery threads.
1810          */
1811         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1812             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1813                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1814                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1815                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1816                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1817                         lpfc_issue_els_adisc(vport, ndlp, 0);
1818                 } else {
1819                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1820                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1821                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1822                 }
1823         }
1824         return ndlp->nlp_state;
1825 }
1826
1827 static uint32_t
1828 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1829                        void *arg, uint32_t evt)
1830 {
1831         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1832         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1833
1834         spin_lock_irq(shost->host_lock);
1835         ndlp->nlp_flag |= NLP_LOGO_ACC;
1836         spin_unlock_irq(shost->host_lock);
1837
1838         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1839
1840         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1841                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1842                 spin_lock_irq(shost->host_lock);
1843                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1844                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1845                 spin_unlock_irq(shost->host_lock);
1846                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1847         } else {
1848                 spin_lock_irq(shost->host_lock);
1849                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1850                 spin_unlock_irq(shost->host_lock);
1851         }
1852         return ndlp->nlp_state;
1853 }
1854
1855 static uint32_t
1856 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1857                          void *arg, uint32_t evt)
1858 {
1859         struct lpfc_iocbq *cmdiocb, *rspiocb;
1860         IOCB_t *irsp;
1861
1862         cmdiocb = (struct lpfc_iocbq *) arg;
1863         rspiocb = cmdiocb->context_un.rsp_iocb;
1864
1865         irsp = &rspiocb->iocb;
1866         if (irsp->ulpStatus) {
1867                 ndlp->nlp_flag |= NLP_DEFER_RM;
1868                 return NLP_STE_FREED_NODE;
1869         }
1870         return ndlp->nlp_state;
1871 }
1872
1873 static uint32_t
1874 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1875                         void *arg, uint32_t evt)
1876 {
1877         struct lpfc_iocbq *cmdiocb, *rspiocb;
1878         IOCB_t *irsp;
1879
1880         cmdiocb = (struct lpfc_iocbq *) arg;
1881         rspiocb = cmdiocb->context_un.rsp_iocb;
1882
1883         irsp = &rspiocb->iocb;
1884         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1885                 lpfc_drop_node(vport, ndlp);
1886                 return NLP_STE_FREED_NODE;
1887         }
1888         return ndlp->nlp_state;
1889 }
1890
1891 static uint32_t
1892 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1893                         void *arg, uint32_t evt)
1894 {
1895         lpfc_unreg_rpi(vport, ndlp);
1896         /* This routine does nothing, just return the current state */
1897         return ndlp->nlp_state;
1898 }
1899
1900 static uint32_t
1901 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1902                          void *arg, uint32_t evt)
1903 {
1904         struct lpfc_iocbq *cmdiocb, *rspiocb;
1905         IOCB_t *irsp;
1906
1907         cmdiocb = (struct lpfc_iocbq *) arg;
1908         rspiocb = cmdiocb->context_un.rsp_iocb;
1909
1910         irsp = &rspiocb->iocb;
1911         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1912                 lpfc_drop_node(vport, ndlp);
1913                 return NLP_STE_FREED_NODE;
1914         }
1915         return ndlp->nlp_state;
1916 }
1917
1918 static uint32_t
1919 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1920                             struct lpfc_nodelist *ndlp,
1921                             void *arg, uint32_t evt)
1922 {
1923         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1924         MAILBOX_t    *mb = &pmb->mb;
1925
1926         if (!mb->mbxStatus)
1927                 ndlp->nlp_rpi = mb->un.varWords[0];
1928         else {
1929                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1930                         lpfc_drop_node(vport, ndlp);
1931                         return NLP_STE_FREED_NODE;
1932                 }
1933         }
1934         return ndlp->nlp_state;
1935 }
1936
1937 static uint32_t
1938 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1939                         void *arg, uint32_t evt)
1940 {
1941         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1942
1943         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1944                 spin_lock_irq(shost->host_lock);
1945                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1946                 spin_unlock_irq(shost->host_lock);
1947                 return ndlp->nlp_state;
1948         }
1949         lpfc_drop_node(vport, ndlp);
1950         return NLP_STE_FREED_NODE;
1951 }
1952
1953 static uint32_t
1954 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1955                            void *arg, uint32_t evt)
1956 {
1957         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1958
1959         /* Don't do anything that will mess up processing of the
1960          * previous RSCN.
1961          */
1962         if (vport->fc_flag & FC_RSCN_DEFERRED)
1963                 return ndlp->nlp_state;
1964
1965         spin_lock_irq(shost->host_lock);
1966         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1967         spin_unlock_irq(shost->host_lock);
1968         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1969                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1970         }
1971         return ndlp->nlp_state;
1972 }
1973
1974
1975 /* This next section defines the NPort Discovery State Machine */
1976
1977 /* There are 4 different double linked lists nodelist entries can reside on.
1978  * The plogi list and adisc list are used when Link Up discovery or RSCN
1979  * processing is needed. Each list holds the nodes that we will send PLOGI
1980  * or ADISC on. These lists will keep track of what nodes will be effected
1981  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1982  * The unmapped_list will contain all nodes that we have successfully logged
1983  * into at the Fibre Channel level. The mapped_list will contain all nodes
1984  * that are mapped FCP targets.
1985  */
1986 /*
1987  * The bind list is a list of undiscovered (potentially non-existent) nodes
1988  * that we have saved binding information on. This information is used when
1989  * nodes transition from the unmapped to the mapped list.
1990  */
1991 /* For UNUSED_NODE state, the node has just been allocated .
1992  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1993  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1994  * and put on the unmapped list. For ADISC processing, the node is taken off
1995  * the ADISC list and placed on either the mapped or unmapped list (depending
1996  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1997  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1998  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1999  * node, the node is taken off the unmapped list. The binding list is checked
2000  * for a valid binding, or a binding is automatically assigned. If binding
2001  * assignment is unsuccessful, the node is left on the unmapped list. If
2002  * binding assignment is successful, the associated binding list entry (if
2003  * any) is removed, and the node is placed on the mapped list.
2004  */
2005 /*
2006  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2007  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2008  * expire, all effected nodes will receive a DEVICE_RM event.
2009  */
2010 /*
2011  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2012  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2013  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2014  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2015  * we will first process the ADISC list.  32 entries are processed initially and
2016  * ADISC is initited for each one.  Completions / Events for each node are
2017  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2018  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2019  * waiting, and the ADISC list count is identically 0, then we are done. For
2020  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2021  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2022  * list.  32 entries are processed initially and PLOGI is initited for each one.
2023  * Completions / Events for each node are funnelled thru the state machine.  As
2024  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2025  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2026  * indentically 0, then we are done. We have now completed discovery / RSCN
2027  * handling. Upon completion, ALL nodes should be on either the mapped or
2028  * unmapped lists.
2029  */
2030
2031 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2032      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2033         /* Action routine                  Event       Current State  */
2034         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2035         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2036         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2037         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2038         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2039         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2040         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2041         lpfc_disc_illegal,              /* CMPL_PRLI       */
2042         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2043         lpfc_disc_illegal,              /* CMPL_ADISC      */
2044         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2045         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2046         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2047
2048         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2049         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2050         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2051         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2052         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2053         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2054         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2055         lpfc_disc_illegal,              /* CMPL_PRLI       */
2056         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2057         lpfc_disc_illegal,              /* CMPL_ADISC      */
2058         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2059         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2060         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2061
2062         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2063         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2064         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2065         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2066         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2067         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2068         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2069         lpfc_disc_illegal,              /* CMPL_PRLI       */
2070         lpfc_disc_illegal,              /* CMPL_LOGO       */
2071         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2072         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2073         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2074         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2075
2076         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2077         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2078         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2079         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2080         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2081         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2082         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2083         lpfc_disc_illegal,              /* CMPL_PRLI       */
2084         lpfc_disc_illegal,              /* CMPL_LOGO       */
2085         lpfc_disc_illegal,              /* CMPL_ADISC      */
2086         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2087         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2088         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2089
2090         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2091         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2092         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2093         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2094         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2095         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2096         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2097         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2098         lpfc_disc_illegal,              /* CMPL_LOGO       */
2099         lpfc_disc_illegal,              /* CMPL_ADISC      */
2100         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2101         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2102         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2103
2104         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2105         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2106         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2107         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2108         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2109         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2110         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2111         lpfc_disc_illegal,              /* CMPL_PRLI       */
2112         lpfc_disc_illegal,              /* CMPL_LOGO       */
2113         lpfc_disc_illegal,              /* CMPL_ADISC      */
2114         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2115         lpfc_disc_illegal,              /* DEVICE_RM       */
2116         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2117
2118         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2119         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2120         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2121         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2122         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2123         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2124         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2125         lpfc_disc_illegal,              /* CMPL_PRLI       */
2126         lpfc_disc_illegal,              /* CMPL_LOGO       */
2127         lpfc_disc_illegal,              /* CMPL_ADISC      */
2128         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2129         lpfc_disc_illegal,              /* DEVICE_RM       */
2130         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2131
2132         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2133         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2134         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2135         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2136         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2137         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2138         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2139         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2140         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2141         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2142         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2143         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2144         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2145 };
2146
2147 int
2148 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2149                         void *arg, uint32_t evt)
2150 {
2151         uint32_t cur_state, rc;
2152         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2153                          uint32_t);
2154         uint32_t got_ndlp = 0;
2155
2156         if (lpfc_nlp_get(ndlp))
2157                 got_ndlp = 1;
2158
2159         cur_state = ndlp->nlp_state;
2160
2161         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2162         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2163                          "0211 DSM in event x%x on NPort x%x in "
2164                          "state %d Data: x%x\n",
2165                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2166
2167         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2168                  "DSM in:          evt:%d ste:%d did:x%x",
2169                 evt, cur_state, ndlp->nlp_DID);
2170
2171         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2172         rc = (func) (vport, ndlp, arg, evt);
2173
2174         /* DSM out state <rc> on NPort <nlp_DID> */
2175         if (got_ndlp) {
2176                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2177                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2178                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2179
2180                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2181                         "DSM out:         ste:%d did:x%x flg:x%x",
2182                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2183                 /* Decrement the ndlp reference count held for this function */
2184                 lpfc_nlp_put(ndlp);
2185         } else {
2186                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2187                         "0212 DSM out state %d on NPort free\n", rc);
2188
2189                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2190                         "DSM out:         ste:%d did:x%x flg:x%x",
2191                         rc, 0, 0);
2192         }
2193
2194         return rc;
2195 }