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) 2017-2021 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi.h>
  30 #include <scsi/scsi_device.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport_fc.h>
  33 #include <scsi/fc/fc_fs.h>
  34
  35 #include "lpfc_hw4.h"
  36 #include "lpfc_hw.h"
  37 #include "lpfc_sli.h"
  38 #include "lpfc_sli4.h"
  39 #include "lpfc_nl.h"
  40 #include "lpfc_disc.h"
  41 #include "lpfc.h"
  42 #include "lpfc_scsi.h"
  43 #include "lpfc_nvme.h"
  44 #include "lpfc_logmsg.h"
  45 #include "lpfc_crtn.h"
  46 #include "lpfc_vport.h"
  47 #include "lpfc_debugfs.h"
  48
  49
  50 /* Called to verify a rcv'ed ADISC was intended for us. */
  51 static int
  52 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  53                  struct lpfc_name *nn, struct lpfc_name *pn)
  54 {
  55         /* First, we MUST have a RPI registered */
  56         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  57                 return 0;
  58
  59         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  60          * table entry for that node.
  61          */
  62         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  63                 return 0;
  64
  65         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  66                 return 0;
  67
  68         /* we match, return success */
  69         return 1;
  70 }
  71
  72 int
  73 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  74                  struct serv_parm *sp, uint32_t class, int flogi)
  75 {
  76         volatile struct serv_parm *hsp = &vport->fc_sparam;
  77         uint16_t hsp_value, ssp_value = 0;
  78
  79         /*
  80          * The receive data field size and buffer-to-buffer receive data field
  81          * size entries are 16 bits but are represented as two 8-bit fields in
  82          * the driver data structure to account for rsvd bits and other control
  83          * bits.  Reconstruct and compare the fields as a 16-bit values before
  84          * correcting the byte values.
  85          */
  86         if (sp->cls1.classValid) {
  87                 if (!flogi) {
  88                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  89                                      hsp->cls1.rcvDataSizeLsb);
  90                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  91                                      sp->cls1.rcvDataSizeLsb);
  92                         if (!ssp_value)
  93                                 goto bad_service_param;
  94                         if (ssp_value > hsp_value) {
  95                                 sp->cls1.rcvDataSizeLsb =
  96                                         hsp->cls1.rcvDataSizeLsb;
  97                                 sp->cls1.rcvDataSizeMsb =
  98                                         hsp->cls1.rcvDataSizeMsb;
  99                         }
 100                 }
 101         } else if (class == CLASS1)
 102                 goto bad_service_param;
 103         if (sp->cls2.classValid) {
 104                 if (!flogi) {
 105                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 106                                      hsp->cls2.rcvDataSizeLsb);
 107                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 108                                      sp->cls2.rcvDataSizeLsb);
 109                         if (!ssp_value)
 110                                 goto bad_service_param;
 111                         if (ssp_value > hsp_value) {
 112                                 sp->cls2.rcvDataSizeLsb =
 113                                         hsp->cls2.rcvDataSizeLsb;
 114                                 sp->cls2.rcvDataSizeMsb =
 115                                         hsp->cls2.rcvDataSizeMsb;
 116                         }
 117                 }
 118         } else if (class == CLASS2)
 119                 goto bad_service_param;
 120         if (sp->cls3.classValid) {
 121                 if (!flogi) {
 122                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 123                                      hsp->cls3.rcvDataSizeLsb);
 124                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 125                                      sp->cls3.rcvDataSizeLsb);
 126                         if (!ssp_value)
 127                                 goto bad_service_param;
 128                         if (ssp_value > hsp_value) {
 129                                 sp->cls3.rcvDataSizeLsb =
 130                                         hsp->cls3.rcvDataSizeLsb;
 131                                 sp->cls3.rcvDataSizeMsb =
 132                                         hsp->cls3.rcvDataSizeMsb;
 133                         }
 134                 }
 135         } else if (class == CLASS3)
 136                 goto bad_service_param;
 137
 138         /*
 139          * Preserve the upper four bits of the MSB from the PLOGI response.
 140          * These bits contain the Buffer-to-Buffer State Change Number
 141          * from the target and need to be passed to the FW.
 142          */
 143         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 144         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 145         if (ssp_value > hsp_value) {
 146                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 147                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 148                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 149         }
 150
 151         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 152         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 153         return 1;
 154 bad_service_param:
 155         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 156                          "0207 Device %x "
 157                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 158                          "invalid service parameters.  Ignoring device.\n",
 159                          ndlp->nlp_DID,
 160                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 161                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 162                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 163                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 164         return 0;
 165 }
 166
 167 static void *
 168 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 169                         struct lpfc_iocbq *rspiocb)
 170 {
 171         struct lpfc_dmabuf *pcmd, *prsp;
 172         uint32_t *lp;
 173         void     *ptr = NULL;
 174         IOCB_t   *irsp;
 175
 176         irsp = &rspiocb->iocb;
 177         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 178
 179         /* For lpfc_els_abort, context2 could be zero'ed to delay
 180          * freeing associated memory till after ABTS completes.
 181          */
 182         if (pcmd) {
 183                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 184                                        list);
 185                 if (prsp) {
 186                         lp = (uint32_t *) prsp->virt;
 187                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 188                 }
 189         } else {
 190                 /* Force ulpStatus error since we are returning NULL ptr */
 191                 if (!(irsp->ulpStatus)) {
 192                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 193                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 194                 }
 195                 ptr = NULL;
 196         }
 197         return ptr;
 198 }
 199
 200
 201
 202 /*
 203  * Free resources / clean up outstanding I/Os
 204  * associated with a LPFC_NODELIST entry. This
 205  * routine effectively results in a "software abort".
 206  */
 207 void
 208 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 209 {
 210         LIST_HEAD(abort_list);
 211         struct lpfc_sli_ring *pring;
 212         struct lpfc_iocbq *iocb, *next_iocb;
 213
 214         pring = lpfc_phba_elsring(phba);
 215
 216         /* In case of error recovery path, we might have a NULL pring here */
 217         if (unlikely(!pring))
 218                 return;
 219
 220         /* Abort outstanding I/O on NPort <nlp_DID> */
 221         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 222                          "2819 Abort outstanding I/O on NPort x%x "
 223                          "Data: x%x x%x x%x\n",
 224                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 225                          ndlp->nlp_rpi);
 226         /* Clean up all fabric IOs first.*/
 227         lpfc_fabric_abort_nport(ndlp);
 228
 229         /*
 230          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 231          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 232          * txcmplq so that the abort operation completes them successfully.
 233          */
 234         spin_lock_irq(&phba->hbalock);
 235         if (phba->sli_rev == LPFC_SLI_REV4)
 236                 spin_lock(&pring->ring_lock);
 237         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 238         /* Add to abort_list on on NDLP match. */
 239                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 240                         list_add_tail(&iocb->dlist, &abort_list);
 241         }
 242         if (phba->sli_rev == LPFC_SLI_REV4)
 243                 spin_unlock(&pring->ring_lock);
 244         spin_unlock_irq(&phba->hbalock);
 245
 246         /* Abort the targeted IOs and remove them from the abort list. */
 247         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 248                         spin_lock_irq(&phba->hbalock);
 249                         list_del_init(&iocb->dlist);
 250                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
 251                         spin_unlock_irq(&phba->hbalock);
 252         }
 253         /* Make sure HBA is alive */
 254         lpfc_issue_hb_tmo(phba);
 255
 256         INIT_LIST_HEAD(&abort_list);
 257
 258         /* Now process the txq */
 259         spin_lock_irq(&phba->hbalock);
 260         if (phba->sli_rev == LPFC_SLI_REV4)
 261                 spin_lock(&pring->ring_lock);
 262
 263         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 264                 /* Check to see if iocb matches the nport we are looking for */
 265                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 266                         list_del_init(&iocb->list);
 267                         list_add_tail(&iocb->list, &abort_list);
 268                 }
 269         }
 270
 271         if (phba->sli_rev == LPFC_SLI_REV4)
 272                 spin_unlock(&pring->ring_lock);
 273         spin_unlock_irq(&phba->hbalock);
 274
 275         /* Cancel all the IOCBs from the completions list */
 276         lpfc_sli_cancel_iocbs(phba, &abort_list,
 277                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 278
 279         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 280 }
 281
 282 /* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
 283  * @phba: pointer to lpfc hba data structure.
 284  * @login_mbox: pointer to REG_RPI mailbox object
 285  *
 286  * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
 287  */
 288 static void
 289 lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
 290 {
 291         struct lpfc_iocbq *save_iocb;
 292         struct lpfc_nodelist *ndlp;
 293         MAILBOX_t *mb = &login_mbox->u.mb;
 294
 295         int rc;
 296
 297         ndlp = login_mbox->ctx_ndlp;
 298         save_iocb = login_mbox->context3;
 299
 300         if (mb->mbxStatus == MBX_SUCCESS) {
 301                 /* Now that REG_RPI completed successfully,
 302                  * we can now proceed with sending the PLOGI ACC.
 303                  */
 304                 rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
 305                                       save_iocb, ndlp, NULL);
 306                 if (rc) {
 307                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 308                                         "4576 PLOGI ACC fails pt2pt discovery: "
 309                                         "DID %x Data: %x\n", ndlp->nlp_DID, rc);
 310                 }
 311         }
 312
 313         /* Now process the REG_RPI cmpl */
 314         lpfc_mbx_cmpl_reg_login(phba, login_mbox);
 315         ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
 316         kfree(save_iocb);
 317 }
 318
 319 static int
 320 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 321                struct lpfc_iocbq *cmdiocb)
 322 {
 323         struct lpfc_hba    *phba = vport->phba;
 324         struct lpfc_dmabuf *pcmd;
 325         struct lpfc_dmabuf *mp;
 326         uint64_t nlp_portwwn = 0;
 327         uint32_t *lp;
 328         IOCB_t *icmd;
 329         struct serv_parm *sp;
 330         uint32_t ed_tov;
 331         LPFC_MBOXQ_t *link_mbox;
 332         LPFC_MBOXQ_t *login_mbox;
 333         struct lpfc_iocbq *save_iocb;
 334         struct ls_rjt stat;
 335         uint32_t vid, flag;
 336         int rc;
 337
 338         memset(&stat, 0, sizeof (struct ls_rjt));
 339         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 340         lp = (uint32_t *) pcmd->virt;
 341         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 342         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 343                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 344                                  "0140 PLOGI Reject: invalid pname\n");
 345                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 346                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 347                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 348                         NULL);
 349                 return 0;
 350         }
 351         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 352                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 353                                  "0141 PLOGI Reject: invalid nname\n");
 354                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 355                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 356                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 357                         NULL);
 358                 return 0;
 359         }
 360
 361         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 362         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 363                 /* Reject this request because invalid parameters */
 364                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 365                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 366                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 367                         NULL);
 368                 return 0;
 369         }
 370         icmd = &cmdiocb->iocb;
 371
 372         /* PLOGI chkparm OK */
 373         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 374                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 375                          "x%x x%x x%x\n",
 376                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 377                          ndlp->nlp_rpi, vport->port_state,
 378                          vport->fc_flag);
 379
 380         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 381                 ndlp->nlp_fcp_info |= CLASS2;
 382         else
 383                 ndlp->nlp_fcp_info |= CLASS3;
 384
 385         ndlp->nlp_class_sup = 0;
 386         if (sp->cls1.classValid)
 387                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 388         if (sp->cls2.classValid)
 389                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 390         if (sp->cls3.classValid)
 391                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 392         if (sp->cls4.classValid)
 393                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 394         ndlp->nlp_maxframe =
 395                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 396         /* if already logged in, do implicit logout */
 397         switch (ndlp->nlp_state) {
 398         case  NLP_STE_NPR_NODE:
 399                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 400                         break;
 401                 fallthrough;
 402         case  NLP_STE_REG_LOGIN_ISSUE:
 403         case  NLP_STE_PRLI_ISSUE:
 404         case  NLP_STE_UNMAPPED_NODE:
 405         case  NLP_STE_MAPPED_NODE:
 406                 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
 407                  * For target mode, execute implicit logo.
 408                  * Fabric nodes go into NPR.
 409                  */
 410                 if (!(ndlp->nlp_type & NLP_FABRIC) &&
 411                     !(phba->nvmet_support)) {
 412                         /* Clear ndlp info, since follow up PRLI may have
 413                          * updated ndlp information
 414                          */
 415                         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 416                         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
 417                         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 418                         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
 419                         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 420
 421                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 422                                          ndlp, NULL);
 423                         return 1;
 424                 }
 425                 if (nlp_portwwn != 0 &&
 426                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 427                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 428                                          "0143 PLOGI recv'd from DID: x%x "
 429                                          "WWPN changed: old %llx new %llx\n",
 430                                          ndlp->nlp_DID,
 431                                          (unsigned long long)nlp_portwwn,
 432                                          (unsigned long long)
 433                                          wwn_to_u64(sp->portName.u.wwn));
 434
 435                 /* Notify transport of connectivity loss to trigger cleanup. */
 436                 if (phba->nvmet_support &&
 437                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
 438                         lpfc_nvmet_invalidate_host(phba, ndlp);
 439
 440                 ndlp->nlp_prev_state = ndlp->nlp_state;
 441                 /* rport needs to be unregistered first */
 442                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 443                 break;
 444         }
 445
 446         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 447         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
 448         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 449         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
 450         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 451
 452         login_mbox = NULL;
 453         link_mbox = NULL;
 454         save_iocb = NULL;
 455
 456         /* Check for Nport to NPort pt2pt protocol */
 457         if ((vport->fc_flag & FC_PT2PT) &&
 458             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 459                 /* rcv'ed PLOGI decides what our NPortId will be */
 460                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 461
 462                 /* If there is an outstanding FLOGI, abort it now.
 463                  * The remote NPort is not going to ACC our FLOGI
 464                  * if its already issuing a PLOGI for pt2pt mode.
 465                  * This indicates our FLOGI was dropped; however, we
 466                  * must have ACCed the remote NPorts FLOGI to us
 467                  * to make it here.
 468                  */
 469                 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
 470                         lpfc_els_abort_flogi(phba);
 471
 472                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 473                 if (sp->cmn.edtovResolution) {
 474                         /* E_D_TOV ticks are in nanoseconds */
 475                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 476                 }
 477
 478                 /*
 479                  * For pt-to-pt, use the larger EDTOV
 480                  * RATOV = 2 * EDTOV
 481                  */
 482                 if (ed_tov > phba->fc_edtov)
 483                         phba->fc_edtov = ed_tov;
 484                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 485
 486                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 487
 488                 /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
 489                  * to account for updated TOV's / parameters
 490                  */
 491                 if (phba->sli_rev == LPFC_SLI_REV4)
 492                         lpfc_issue_reg_vfi(vport);
 493                 else {
 494                         link_mbox = mempool_alloc(phba->mbox_mem_pool,
 495                                                   GFP_KERNEL);
 496                         if (!link_mbox)
 497                                 goto out;
 498                         lpfc_config_link(phba, link_mbox);
 499                         link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 500                         link_mbox->vport = vport;
 501                         link_mbox->ctx_ndlp = ndlp;
 502
 503                         rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
 504                         if (rc == MBX_NOT_FINISHED) {
 505                                 mempool_free(link_mbox, phba->mbox_mem_pool);
 506                                 goto out;
 507                         }
 508                 }
 509
 510                 lpfc_can_disctmo(vport);
 511         }
 512
 513         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
 514         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
 515             sp->cmn.valid_vendor_ver_level) {
 516                 vid = be32_to_cpu(sp->un.vv.vid);
 517                 flag = be32_to_cpu(sp->un.vv.flags);
 518                 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
 519                         ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
 520         }
 521
 522         login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 523         if (!login_mbox)
 524                 goto out;
 525
 526         save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
 527         if (!save_iocb)
 528                 goto out;
 529
 530         /* Save info from cmd IOCB to be used in rsp after all mbox completes */
 531         memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
 532                sizeof(struct lpfc_iocbq));
 533
 534         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 535         if (phba->sli_rev == LPFC_SLI_REV4)
 536                 lpfc_unreg_rpi(vport, ndlp);
 537
 538         /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
 539          * always be deferring the ACC.
 540          */
 541         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 542                             (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
 543         if (rc)
 544                 goto out;
 545
 546         login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 547         login_mbox->vport = vport;
 548
 549         /*
 550          * If there is an outstanding PLOGI issued, abort it before
 551          * sending ACC rsp for received PLOGI. If pending plogi
 552          * is not canceled here, the plogi will be rejected by
 553          * remote port and will be retried. On a configuration with
 554          * single discovery thread, this will cause a huge delay in
 555          * discovery. Also this will cause multiple state machines
 556          * running in parallel for this node.
 557          * This only applies to a fabric environment.
 558          */
 559         if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
 560             (vport->fc_flag & FC_FABRIC)) {
 561                 /* software abort outstanding PLOGI */
 562                 lpfc_els_abort(phba, ndlp);
 563         }
 564
 565         if ((vport->port_type == LPFC_NPIV_PORT &&
 566              vport->cfg_restrict_login)) {
 567
 568                 /* no deferred ACC */
 569                 kfree(save_iocb);
 570
 571                 /* This is an NPIV SLI4 instance that does not need to register
 572                  * a default RPI.
 573                  */
 574                 if (phba->sli_rev == LPFC_SLI_REV4) {
 575                         mp = (struct lpfc_dmabuf *)login_mbox->ctx_buf;
 576                         if (mp) {
 577                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 578                                 kfree(mp);
 579                         }
 580                         mempool_free(login_mbox, phba->mbox_mem_pool);
 581                         login_mbox = NULL;
 582                 } else {
 583                         /* In order to preserve RPIs, we want to cleanup
 584                          * the default RPI the firmware created to rcv
 585                          * this ELS request. The only way to do this is
 586                          * to register, then unregister the RPI.
 587                          */
 588                         spin_lock_irq(&ndlp->lock);
 589                         ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
 590                                            NLP_RCV_PLOGI);
 591                         spin_unlock_irq(&ndlp->lock);
 592                 }
 593
 594                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 595                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 596                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 597                         ndlp, login_mbox);
 598                 if (rc)
 599                         mempool_free(login_mbox, phba->mbox_mem_pool);
 600                 return 1;
 601         }
 602
 603         /* So the order here should be:
 604          * SLI3 pt2pt
 605          *   Issue CONFIG_LINK mbox
 606          *   CONFIG_LINK cmpl
 607          * SLI4 pt2pt
 608          *   Issue REG_VFI mbox
 609          *   REG_VFI cmpl
 610          * SLI4
 611          *   Issue UNREG RPI mbx
 612          *   UNREG RPI cmpl
 613          * Issue REG_RPI mbox
 614          * REG RPI cmpl
 615          * Issue PLOGI ACC
 616          * PLOGI ACC cmpl
 617          */
 618         login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
 619         login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
 620         login_mbox->context3 = save_iocb; /* For PLOGI ACC */
 621
 622         spin_lock_irq(&ndlp->lock);
 623         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 624         spin_unlock_irq(&ndlp->lock);
 625
 626         /* Start the ball rolling by issuing REG_LOGIN here */
 627         rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
 628         if (rc == MBX_NOT_FINISHED)
 629                 goto out;
 630         lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 631
 632         return 1;
 633 out:
 634         kfree(save_iocb);
 635         if (login_mbox)
 636                 mempool_free(login_mbox, phba->mbox_mem_pool);
 637
 638         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 639         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 640         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 641         return 0;
 642 }
 643
 644 /**
 645  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 646  * @phba: pointer to lpfc hba data structure.
 647  * @mboxq: pointer to mailbox object
 648  *
 649  * This routine is invoked to issue a completion to a rcv'ed
 650  * ADISC or PDISC after the paused RPI has been resumed.
 651  **/
 652 static void
 653 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 654 {
 655         struct lpfc_vport *vport;
 656         struct lpfc_iocbq *elsiocb;
 657         struct lpfc_nodelist *ndlp;
 658         uint32_t cmd;
 659
 660         elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
 661         ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
 662         vport = mboxq->vport;
 663         cmd = elsiocb->drvrTimeout;
 664
 665         if (cmd == ELS_CMD_ADISC) {
 666                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 667         } else {
 668                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 669                         ndlp, NULL);
 670         }
 671
 672         /* This nlp_put pairs with lpfc_sli4_resume_rpi */
 673         lpfc_nlp_put(ndlp);
 674
 675         kfree(elsiocb);
 676         mempool_free(mboxq, phba->mbox_mem_pool);
 677 }
 678
 679 static int
 680 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 681                 struct lpfc_iocbq *cmdiocb)
 682 {
 683         struct lpfc_iocbq  *elsiocb;
 684         struct lpfc_dmabuf *pcmd;
 685         struct serv_parm   *sp;
 686         struct lpfc_name   *pnn, *ppn;
 687         struct ls_rjt stat;
 688         ADISC *ap;
 689         IOCB_t *icmd;
 690         uint32_t *lp;
 691         uint32_t cmd;
 692
 693         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 694         lp = (uint32_t *) pcmd->virt;
 695
 696         cmd = *lp++;
 697         if (cmd == ELS_CMD_ADISC) {
 698                 ap = (ADISC *) lp;
 699                 pnn = (struct lpfc_name *) & ap->nodeName;
 700                 ppn = (struct lpfc_name *) & ap->portName;
 701         } else {
 702                 sp = (struct serv_parm *) lp;
 703                 pnn = (struct lpfc_name *) & sp->nodeName;
 704                 ppn = (struct lpfc_name *) & sp->portName;
 705         }
 706
 707         icmd = &cmdiocb->iocb;
 708         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 709
 710                 /*
 711                  * As soon as  we send ACC, the remote NPort can
 712                  * start sending us data. Thus, for SLI4 we must
 713                  * resume the RPI before the ACC goes out.
 714                  */
 715                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 716                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 717                                 GFP_KERNEL);
 718                         if (elsiocb) {
 719
 720                                 /* Save info from cmd IOCB used in rsp */
 721                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 722                                         sizeof(struct lpfc_iocbq));
 723
 724                                 /* Save the ELS cmd */
 725                                 elsiocb->drvrTimeout = cmd;
 726
 727                                 lpfc_sli4_resume_rpi(ndlp,
 728                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 729                                 goto out;
 730                         }
 731                 }
 732
 733                 if (cmd == ELS_CMD_ADISC) {
 734                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 735                 } else {
 736                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 737                                 ndlp, NULL);
 738                 }
 739 out:
 740                 /* If we are authenticated, move to the proper state.
 741                  * It is possible an ADISC arrived and the remote nport
 742                  * is already in MAPPED or UNMAPPED state.  Catch this
 743                  * condition and don't set the nlp_state again because
 744                  * it causes an unnecessary transport unregister/register.
 745                  *
 746                  * Nodes marked for ADISC will move MAPPED or UNMAPPED state
 747                  * after issuing ADISC
 748                  */
 749                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
 750                         if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
 751                             !(ndlp->nlp_flag & NLP_NPR_ADISC))
 752                                 lpfc_nlp_set_state(vport, ndlp,
 753                                                    NLP_STE_MAPPED_NODE);
 754                 }
 755
 756                 return 1;
 757         }
 758         /* Reject this request because invalid parameters */
 759         stat.un.b.lsRjtRsvd0 = 0;
 760         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 761         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 762         stat.un.b.vendorUnique = 0;
 763         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 764
 765         /* 1 sec timeout */
 766         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 767
 768         spin_lock_irq(&ndlp->lock);
 769         ndlp->nlp_flag |= NLP_DELAY_TMO;
 770         spin_unlock_irq(&ndlp->lock);
 771         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 772         ndlp->nlp_prev_state = ndlp->nlp_state;
 773         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 774         return 0;
 775 }
 776
 777 static int
 778 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 779               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 780 {
 781         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 782         struct lpfc_hba    *phba = vport->phba;
 783         struct lpfc_vport **vports;
 784         int i, active_vlink_present = 0 ;
 785
 786         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 787         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 788          * PLOGIs during LOGO storms from a device.
 789          */
 790         spin_lock_irq(&ndlp->lock);
 791         ndlp->nlp_flag |= NLP_LOGO_ACC;
 792         spin_unlock_irq(&ndlp->lock);
 793         if (els_cmd == ELS_CMD_PRLO)
 794                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 795         else
 796                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 797
 798         /* This clause allows the initiator to ACC the LOGO back to the
 799          * Fabric Domain Controller.  It does deliberately skip all other
 800          * steps because some fabrics send RDP requests after logging out
 801          * from the initiator.
 802          */
 803         if (ndlp->nlp_type & NLP_FABRIC &&
 804             ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
 805                 return 0;
 806
 807         /* Notify transport of connectivity loss to trigger cleanup. */
 808         if (phba->nvmet_support &&
 809             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
 810                 lpfc_nvmet_invalidate_host(phba, ndlp);
 811
 812         if (ndlp->nlp_DID == Fabric_DID) {
 813                 if (vport->port_state <= LPFC_FDISC ||
 814                     vport->fc_flag & FC_PT2PT)
 815                         goto out;
 816                 lpfc_linkdown_port(vport);
 817                 spin_lock_irq(shost->host_lock);
 818                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 819                 spin_unlock_irq(shost->host_lock);
 820                 vports = lpfc_create_vport_work_array(phba);
 821                 if (vports) {
 822                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 823                                         i++) {
 824                                 if ((!(vports[i]->fc_flag &
 825                                         FC_VPORT_LOGO_RCVD)) &&
 826                                         (vports[i]->port_state > LPFC_FDISC)) {
 827                                         active_vlink_present = 1;
 828                                         break;
 829                                 }
 830                         }
 831                         lpfc_destroy_vport_work_array(phba, vports);
 832                 }
 833
 834                 /*
 835                  * Don't re-instantiate if vport is marked for deletion.
 836                  * If we are here first then vport_delete is going to wait
 837                  * for discovery to complete.
 838                  */
 839                 if (!(vport->load_flag & FC_UNLOADING) &&
 840                                         active_vlink_present) {
 841                         /*
 842                          * If there are other active VLinks present,
 843                          * re-instantiate the Vlink using FDISC.
 844                          */
 845                         mod_timer(&ndlp->nlp_delayfunc,
 846                                   jiffies + msecs_to_jiffies(1000));
 847                         spin_lock_irq(&ndlp->lock);
 848                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 849                         spin_unlock_irq(&ndlp->lock);
 850                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 851                         vport->port_state = LPFC_FDISC;
 852                 } else {
 853                         spin_lock_irq(shost->host_lock);
 854                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 855                         spin_unlock_irq(shost->host_lock);
 856                         lpfc_retry_pport_discovery(phba);
 857                 }
 858         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 859                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 860                 (ndlp->nlp_type & NLP_NVME_TARGET) ||
 861                 (vport->fc_flag & FC_PT2PT))) ||
 862                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 863                 /* Only try to re-login if this is NOT a Fabric Node
 864                  * AND the remote NPORT is a FCP/NVME Target or we
 865                  * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
 866                  * case for LOGO as a response to ADISC behavior.
 867                  */
 868                 mod_timer(&ndlp->nlp_delayfunc,
 869                           jiffies + msecs_to_jiffies(1000 * 1));
 870                 spin_lock_irq(&ndlp->lock);
 871                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 872                 spin_unlock_irq(&ndlp->lock);
 873
 874                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 875         }
 876 out:
 877         /* Unregister from backend, could have been skipped due to ADISC */
 878         lpfc_nlp_unreg_node(vport, ndlp);
 879
 880         ndlp->nlp_prev_state = ndlp->nlp_state;
 881         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 882
 883         spin_lock_irq(&ndlp->lock);
 884         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 885         spin_unlock_irq(&ndlp->lock);
 886         /* The driver has to wait until the ACC completes before it continues
 887          * processing the LOGO.  The action will resume in
 888          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 889          * unreg_login, the driver waits so the ACC does not get aborted.
 890          */
 891         return 0;
 892 }
 893
 894 static uint32_t
 895 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
 896                             struct lpfc_nodelist *ndlp,
 897                             struct lpfc_iocbq *cmdiocb)
 898 {
 899         struct ls_rjt stat;
 900         uint32_t *payload;
 901         uint32_t cmd;
 902
 903         payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
 904         cmd = *payload;
 905         if (vport->phba->nvmet_support) {
 906                 /* Must be a NVME PRLI */
 907                 if (cmd ==  ELS_CMD_PRLI)
 908                         goto out;
 909         } else {
 910                 /* Initiator mode. */
 911                 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
 912                         goto out;
 913         }
 914         return 1;
 915 out:
 916         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
 917                          "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
 918                          "state x%x flags x%x\n",
 919                          cmd, ndlp->nlp_rpi, ndlp->nlp_state,
 920                          ndlp->nlp_flag);
 921         memset(&stat, 0, sizeof(struct ls_rjt));
 922         stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
 923         stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
 924         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 925                             ndlp, NULL);
 926         return 0;
 927 }
 928
 929 static void
 930 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 931               struct lpfc_iocbq *cmdiocb)
 932 {
 933         struct lpfc_hba  *phba = vport->phba;
 934         struct lpfc_dmabuf *pcmd;
 935         uint32_t *lp;
 936         PRLI *npr;
 937         struct fc_rport *rport = ndlp->rport;
 938         u32 roles;
 939
 940         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 941         lp = (uint32_t *) pcmd->virt;
 942         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 943
 944         if ((npr->prliType == PRLI_FCP_TYPE) ||
 945             (npr->prliType == PRLI_NVME_TYPE)) {
 946                 if (npr->initiatorFunc) {
 947                         if (npr->prliType == PRLI_FCP_TYPE)
 948                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 949                         if (npr->prliType == PRLI_NVME_TYPE)
 950                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 951                 }
 952                 if (npr->targetFunc) {
 953                         if (npr->prliType == PRLI_FCP_TYPE)
 954                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 955                         if (npr->prliType == PRLI_NVME_TYPE)
 956                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 957                         if (npr->writeXferRdyDis)
 958                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 959                 }
 960                 if (npr->Retry && ndlp->nlp_type &
 961                                         (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
 962                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 963
 964                 if (npr->Retry && phba->nsler &&
 965                     ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
 966                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
 967
 968
 969                 /* If this driver is in nvme target mode, set the ndlp's fc4
 970                  * type to NVME provided the PRLI response claims NVME FC4
 971                  * type.  Target mode does not issue gft_id so doesn't get
 972                  * the fc4 type set until now.
 973                  */
 974                 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
 975                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 976                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 977                 }
 978
 979                 /* Fabric Controllers send FCP PRLI as an initiator but should
 980                  * not get recognized as FCP type and registered with transport.
 981                  */
 982                 if (npr->prliType == PRLI_FCP_TYPE &&
 983                     !(ndlp->nlp_type & NLP_FABRIC))
 984                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
 985         }
 986         if (rport) {
 987                 /* We need to update the rport role values */
 988                 roles = FC_RPORT_ROLE_UNKNOWN;
 989                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 990                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 991                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 992                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 993
 994                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 995                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 996                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 997
 998                 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 999                         fc_remote_port_rolechg(rport, roles);
1000         }
1001 }
1002
1003 static uint32_t
1004 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1005 {
1006         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1007                 spin_lock_irq(&ndlp->lock);
1008                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1009                 spin_unlock_irq(&ndlp->lock);
1010                 return 0;
1011         }
1012
1013         if (!(vport->fc_flag & FC_PT2PT)) {
1014                 /* Check config parameter use-adisc or FCP-2 */
1015                 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1016                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1017                      (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1018                         spin_lock_irq(&ndlp->lock);
1019                         ndlp->nlp_flag |= NLP_NPR_ADISC;
1020                         spin_unlock_irq(&ndlp->lock);
1021                         return 1;
1022                 }
1023         }
1024
1025         spin_lock_irq(&ndlp->lock);
1026         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1027         spin_unlock_irq(&ndlp->lock);
1028         lpfc_unreg_rpi(vport, ndlp);
1029         return 0;
1030 }
1031
1032 /**
1033  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1034  * @phba : Pointer to lpfc_hba structure.
1035  * @vport: Pointer to lpfc_vport structure.
1036  * @ndlp: Pointer to lpfc_nodelist structure.
1037  * @rpi  : rpi to be release.
1038  *
1039  * This function will send a unreg_login mailbox command to the firmware
1040  * to release a rpi.
1041  **/
1042 static void
1043 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1044                  struct lpfc_nodelist *ndlp, uint16_t rpi)
1045 {
1046         LPFC_MBOXQ_t *pmb;
1047         int rc;
1048
1049         /* If there is already an UNREG in progress for this ndlp,
1050          * no need to queue up another one.
1051          */
1052         if (ndlp->nlp_flag & NLP_UNREG_INP) {
1053                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1054                                  "1435 release_rpi SKIP UNREG x%x on "
1055                                  "NPort x%x deferred x%x  flg x%x "
1056                                  "Data: x%px\n",
1057                                  ndlp->nlp_rpi, ndlp->nlp_DID,
1058                                  ndlp->nlp_defer_did,
1059                                  ndlp->nlp_flag, ndlp);
1060                 return;
1061         }
1062
1063         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1064                         GFP_KERNEL);
1065         if (!pmb)
1066                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1067                                  "2796 mailbox memory allocation failed \n");
1068         else {
1069                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1070                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1071                 pmb->vport = vport;
1072                 pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
1073                 if (!pmb->ctx_ndlp) {
1074                         mempool_free(pmb, phba->mbox_mem_pool);
1075                         return;
1076                 }
1077
1078                 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1079                     (!(vport->fc_flag & FC_OFFLINE_MODE)))
1080                         ndlp->nlp_flag |= NLP_UNREG_INP;
1081
1082                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1083                                  "1437 release_rpi UNREG x%x "
1084                                  "on NPort x%x flg x%x\n",
1085                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1086
1087                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1088                 if (rc == MBX_NOT_FINISHED)
1089                         mempool_free(pmb, phba->mbox_mem_pool);
1090         }
1091 }
1092
1093 static uint32_t
1094 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1095                   void *arg, uint32_t evt)
1096 {
1097         struct lpfc_hba *phba;
1098         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1099         uint16_t rpi;
1100
1101         phba = vport->phba;
1102         /* Release the RPI if reglogin completing */
1103         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1104                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1105                 (!pmb->u.mb.mbxStatus)) {
1106                 rpi = pmb->u.mb.un.varWords[0];
1107                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1108         }
1109         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1110                          "0271 Illegal State Transition: node x%x "
1111                          "event x%x, state x%x Data: x%x x%x\n",
1112                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1113                          ndlp->nlp_flag);
1114         return ndlp->nlp_state;
1115 }
1116
1117 static uint32_t
1118 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1119                   void *arg, uint32_t evt)
1120 {
1121         /* This transition is only legal if we previously
1122          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1123          * working on the same NPortID, do nothing for this thread
1124          * to stop it.
1125          */
1126         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1127                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1128                                  "0272 Illegal State Transition: node x%x "
1129                                  "event x%x, state x%x Data: x%x x%x\n",
1130                                   ndlp->nlp_DID, evt, ndlp->nlp_state,
1131                                   ndlp->nlp_rpi, ndlp->nlp_flag);
1132         }
1133         return ndlp->nlp_state;
1134 }
1135
1136 /* Start of Discovery State Machine routines */
1137
1138 static uint32_t
1139 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1140                            void *arg, uint32_t evt)
1141 {
1142         struct lpfc_iocbq *cmdiocb;
1143
1144         cmdiocb = (struct lpfc_iocbq *) arg;
1145
1146         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1147                 return ndlp->nlp_state;
1148         }
1149         return NLP_STE_FREED_NODE;
1150 }
1151
1152 static uint32_t
1153 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1154                          void *arg, uint32_t evt)
1155 {
1156         lpfc_issue_els_logo(vport, ndlp, 0);
1157         return ndlp->nlp_state;
1158 }
1159
1160 static uint32_t
1161 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1162                           void *arg, uint32_t evt)
1163 {
1164         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1165
1166         spin_lock_irq(&ndlp->lock);
1167         ndlp->nlp_flag |= NLP_LOGO_ACC;
1168         spin_unlock_irq(&ndlp->lock);
1169         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1170
1171         return ndlp->nlp_state;
1172 }
1173
1174 static uint32_t
1175 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1176                            void *arg, uint32_t evt)
1177 {
1178         return NLP_STE_FREED_NODE;
1179 }
1180
1181 static uint32_t
1182 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1183                            void *arg, uint32_t evt)
1184 {
1185         return NLP_STE_FREED_NODE;
1186 }
1187
1188 static uint32_t
1189 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1190                         struct lpfc_nodelist *ndlp,
1191                            void *arg, uint32_t evt)
1192 {
1193         return ndlp->nlp_state;
1194 }
1195
1196 static uint32_t
1197 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1198                            void *arg, uint32_t evt)
1199 {
1200         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1201         struct lpfc_hba   *phba = vport->phba;
1202         struct lpfc_iocbq *cmdiocb = arg;
1203         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1204         uint32_t *lp = (uint32_t *) pcmd->virt;
1205         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1206         struct ls_rjt stat;
1207         int port_cmp;
1208
1209         memset(&stat, 0, sizeof (struct ls_rjt));
1210
1211         /* For a PLOGI, we only accept if our portname is less
1212          * than the remote portname.
1213          */
1214         phba->fc_stat.elsLogiCol++;
1215         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1216                           sizeof(struct lpfc_name));
1217
1218         if (port_cmp >= 0) {
1219                 /* Reject this request because the remote node will accept
1220                    ours */
1221                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1222                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1223                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1224                         NULL);
1225         } else {
1226                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1227                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1228                     (vport->num_disc_nodes)) {
1229                         spin_lock_irq(&ndlp->lock);
1230                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1231                         spin_unlock_irq(&ndlp->lock);
1232                         /* Check if there are more PLOGIs to be sent */
1233                         lpfc_more_plogi(vport);
1234                         if (vport->num_disc_nodes == 0) {
1235                                 spin_lock_irq(shost->host_lock);
1236                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1237                                 spin_unlock_irq(shost->host_lock);
1238                                 lpfc_can_disctmo(vport);
1239                                 lpfc_end_rscn(vport);
1240                         }
1241                 }
1242         } /* If our portname was less */
1243
1244         return ndlp->nlp_state;
1245 }
1246
1247 static uint32_t
1248 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1249                           void *arg, uint32_t evt)
1250 {
1251         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1252         struct ls_rjt     stat;
1253
1254         memset(&stat, 0, sizeof (struct ls_rjt));
1255         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1256         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1257         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1258         return ndlp->nlp_state;
1259 }
1260
1261 static uint32_t
1262 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1263                           void *arg, uint32_t evt)
1264 {
1265         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1266
1267         /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1268         if (vport->phba->sli_rev == LPFC_SLI_REV3)
1269                 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1270                                 /* software abort outstanding PLOGI */
1271         lpfc_els_abort(vport->phba, ndlp);
1272
1273         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1274         return ndlp->nlp_state;
1275 }
1276
1277 static uint32_t
1278 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1279                          void *arg, uint32_t evt)
1280 {
1281         struct lpfc_hba   *phba = vport->phba;
1282         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1283
1284         /* software abort outstanding PLOGI */
1285         lpfc_els_abort(phba, ndlp);
1286
1287         if (evt == NLP_EVT_RCV_LOGO) {
1288                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1289         } else {
1290                 lpfc_issue_els_logo(vport, ndlp, 0);
1291         }
1292
1293         /* Put ndlp in npr state set plogi timer for 1 sec */
1294         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1295         spin_lock_irq(&ndlp->lock);
1296         ndlp->nlp_flag |= NLP_DELAY_TMO;
1297         spin_unlock_irq(&ndlp->lock);
1298         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1299         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1300         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1301
1302         return ndlp->nlp_state;
1303 }
1304
1305 static uint32_t
1306 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1307                             struct lpfc_nodelist *ndlp,
1308                             void *arg,
1309                             uint32_t evt)
1310 {
1311         struct lpfc_hba    *phba = vport->phba;
1312         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1313         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1314         uint32_t *lp;
1315         uint32_t vid, flag;
1316         IOCB_t *irsp;
1317         struct serv_parm *sp;
1318         uint32_t ed_tov;
1319         LPFC_MBOXQ_t *mbox;
1320         int rc;
1321
1322         cmdiocb = (struct lpfc_iocbq *) arg;
1323         rspiocb = cmdiocb->context_un.rsp_iocb;
1324
1325         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1326                 /* Recovery from PLOGI collision logic */
1327                 return ndlp->nlp_state;
1328         }
1329
1330         irsp = &rspiocb->iocb;
1331
1332         if (irsp->ulpStatus)
1333                 goto out;
1334
1335         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1336
1337         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1338         if (!prsp)
1339                 goto out;
1340
1341         lp = (uint32_t *) prsp->virt;
1342         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1343
1344         /* Some switches have FDMI servers returning 0 for WWN */
1345         if ((ndlp->nlp_DID != FDMI_DID) &&
1346                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1347                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1348                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1349                                  "0142 PLOGI RSP: Invalid WWN.\n");
1350                 goto out;
1351         }
1352         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1353                 goto out;
1354         /* PLOGI chkparm OK */
1355         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1356                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1357                          ndlp->nlp_DID, ndlp->nlp_state,
1358                          ndlp->nlp_flag, ndlp->nlp_rpi);
1359         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1360                 ndlp->nlp_fcp_info |= CLASS2;
1361         else
1362                 ndlp->nlp_fcp_info |= CLASS3;
1363
1364         ndlp->nlp_class_sup = 0;
1365         if (sp->cls1.classValid)
1366                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1367         if (sp->cls2.classValid)
1368                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1369         if (sp->cls3.classValid)
1370                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1371         if (sp->cls4.classValid)
1372                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1373         ndlp->nlp_maxframe =
1374                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1375
1376         if ((vport->fc_flag & FC_PT2PT) &&
1377             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1378                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1379                 if (sp->cmn.edtovResolution) {
1380                         /* E_D_TOV ticks are in nanoseconds */
1381                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1382                 }
1383
1384                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1385                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1386                     sp->cmn.valid_vendor_ver_level) {
1387                         vid = be32_to_cpu(sp->un.vv.vid);
1388                         flag = be32_to_cpu(sp->un.vv.flags);
1389                         if ((vid == LPFC_VV_EMLX_ID) &&
1390                             (flag & LPFC_VV_SUPPRESS_RSP))
1391                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1392                 }
1393
1394                 /*
1395                  * Use the larger EDTOV
1396                  * RATOV = 2 * EDTOV for pt-to-pt
1397                  */
1398                 if (ed_tov > phba->fc_edtov)
1399                         phba->fc_edtov = ed_tov;
1400                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1401
1402                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1403
1404                 /* Issue config_link / reg_vfi to account for updated TOV's */
1405                 if (phba->sli_rev == LPFC_SLI_REV4) {
1406                         lpfc_issue_reg_vfi(vport);
1407                 } else {
1408                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1409                         if (!mbox) {
1410                                 lpfc_printf_vlog(vport, KERN_ERR,
1411                                                  LOG_TRACE_EVENT,
1412                                                  "0133 PLOGI: no memory "
1413                                                  "for config_link "
1414                                                  "Data: x%x x%x x%x x%x\n",
1415                                                  ndlp->nlp_DID, ndlp->nlp_state,
1416                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1417                                 goto out;
1418                         }
1419
1420                         lpfc_config_link(phba, mbox);
1421
1422                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1423                         mbox->vport = vport;
1424                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1425                         if (rc == MBX_NOT_FINISHED) {
1426                                 mempool_free(mbox, phba->mbox_mem_pool);
1427                                 goto out;
1428                         }
1429                 }
1430         }
1431
1432         lpfc_unreg_rpi(vport, ndlp);
1433
1434         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1435         if (!mbox) {
1436                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1437                                  "0018 PLOGI: no memory for reg_login "
1438                                  "Data: x%x x%x x%x x%x\n",
1439                                  ndlp->nlp_DID, ndlp->nlp_state,
1440                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1441                 goto out;
1442         }
1443
1444         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1445                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1446                 switch (ndlp->nlp_DID) {
1447                 case NameServer_DID:
1448                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1449                         /* Fabric Controller Node needs these parameters. */
1450                         memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
1451                         break;
1452                 case FDMI_DID:
1453                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1454                         break;
1455                 default:
1456                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1457                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1458                 }
1459
1460                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1461                 if (!mbox->ctx_ndlp)
1462                         goto out;
1463
1464                 mbox->vport = vport;
1465                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1466                     != MBX_NOT_FINISHED) {
1467                         lpfc_nlp_set_state(vport, ndlp,
1468                                            NLP_STE_REG_LOGIN_ISSUE);
1469                         return ndlp->nlp_state;
1470                 }
1471                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1472                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1473                 /* decrement node reference count to the failed mbox
1474                  * command
1475                  */
1476                 lpfc_nlp_put(ndlp);
1477                 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1478                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1479                 kfree(mp);
1480                 mempool_free(mbox, phba->mbox_mem_pool);
1481
1482                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1483                                  "0134 PLOGI: cannot issue reg_login "
1484                                  "Data: x%x x%x x%x x%x\n",
1485                                  ndlp->nlp_DID, ndlp->nlp_state,
1486                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1487         } else {
1488                 mempool_free(mbox, phba->mbox_mem_pool);
1489
1490                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1491                                  "0135 PLOGI: cannot format reg_login "
1492                                  "Data: x%x x%x x%x x%x\n",
1493                                  ndlp->nlp_DID, ndlp->nlp_state,
1494                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1495         }
1496
1497
1498 out:
1499         if (ndlp->nlp_DID == NameServer_DID) {
1500                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1501                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1502                                  "0261 Cannot Register NameServer login\n");
1503         }
1504
1505         /*
1506         ** In case the node reference counter does not go to zero, ensure that
1507         ** the stale state for the node is not processed.
1508         */
1509
1510         ndlp->nlp_prev_state = ndlp->nlp_state;
1511         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1512         return NLP_STE_FREED_NODE;
1513 }
1514
1515 static uint32_t
1516 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1517                            void *arg, uint32_t evt)
1518 {
1519         return ndlp->nlp_state;
1520 }
1521
1522 static uint32_t
1523 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1524         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1525 {
1526         struct lpfc_hba *phba;
1527         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1528         MAILBOX_t *mb = &pmb->u.mb;
1529         uint16_t rpi;
1530
1531         phba = vport->phba;
1532         /* Release the RPI */
1533         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1534                 !mb->mbxStatus) {
1535                 rpi = pmb->u.mb.un.varWords[0];
1536                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1537         }
1538         return ndlp->nlp_state;
1539 }
1540
1541 static uint32_t
1542 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1543                            void *arg, uint32_t evt)
1544 {
1545         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1546                 spin_lock_irq(&ndlp->lock);
1547                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1548                 spin_unlock_irq(&ndlp->lock);
1549                 return ndlp->nlp_state;
1550         } else {
1551                 /* software abort outstanding PLOGI */
1552                 lpfc_els_abort(vport->phba, ndlp);
1553
1554                 lpfc_drop_node(vport, ndlp);
1555                 return NLP_STE_FREED_NODE;
1556         }
1557 }
1558
1559 static uint32_t
1560 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1561                               struct lpfc_nodelist *ndlp,
1562                               void *arg,
1563                               uint32_t evt)
1564 {
1565         struct lpfc_hba  *phba = vport->phba;
1566
1567         /* Don't do anything that will mess up processing of the
1568          * previous RSCN.
1569          */
1570         if (vport->fc_flag & FC_RSCN_DEFERRED)
1571                 return ndlp->nlp_state;
1572
1573         /* software abort outstanding PLOGI */
1574         lpfc_els_abort(phba, ndlp);
1575
1576         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1577         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1578         spin_lock_irq(&ndlp->lock);
1579         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1580         spin_unlock_irq(&ndlp->lock);
1581
1582         return ndlp->nlp_state;
1583 }
1584
1585 static uint32_t
1586 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1587                            void *arg, uint32_t evt)
1588 {
1589         struct lpfc_hba   *phba = vport->phba;
1590         struct lpfc_iocbq *cmdiocb;
1591
1592         /* software abort outstanding ADISC */
1593         lpfc_els_abort(phba, ndlp);
1594
1595         cmdiocb = (struct lpfc_iocbq *) arg;
1596
1597         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1598                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1599                         spin_lock_irq(&ndlp->lock);
1600                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1601                         spin_unlock_irq(&ndlp->lock);
1602                         if (vport->num_disc_nodes)
1603                                 lpfc_more_adisc(vport);
1604                 }
1605                 return ndlp->nlp_state;
1606         }
1607         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1608         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1609         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1610
1611         return ndlp->nlp_state;
1612 }
1613
1614 static uint32_t
1615 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1616                           void *arg, uint32_t evt)
1617 {
1618         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1619
1620         if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1621                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1622         return ndlp->nlp_state;
1623 }
1624
1625 static uint32_t
1626 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1627                           void *arg, uint32_t evt)
1628 {
1629         struct lpfc_hba *phba = vport->phba;
1630         struct lpfc_iocbq *cmdiocb;
1631
1632         cmdiocb = (struct lpfc_iocbq *) arg;
1633
1634         /* software abort outstanding ADISC */
1635         lpfc_els_abort(phba, ndlp);
1636
1637         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1638         return ndlp->nlp_state;
1639 }
1640
1641 static uint32_t
1642 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1643                             struct lpfc_nodelist *ndlp,
1644                             void *arg, uint32_t evt)
1645 {
1646         struct lpfc_iocbq *cmdiocb;
1647
1648         cmdiocb = (struct lpfc_iocbq *) arg;
1649
1650         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1651         return ndlp->nlp_state;
1652 }
1653
1654 static uint32_t
1655 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1656                           void *arg, uint32_t evt)
1657 {
1658         struct lpfc_iocbq *cmdiocb;
1659
1660         cmdiocb = (struct lpfc_iocbq *) arg;
1661
1662         /* Treat like rcv logo */
1663         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1664         return ndlp->nlp_state;
1665 }
1666
1667 static uint32_t
1668 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1669                             struct lpfc_nodelist *ndlp,
1670                             void *arg, uint32_t evt)
1671 {
1672         struct lpfc_hba   *phba = vport->phba;
1673         struct lpfc_iocbq *cmdiocb, *rspiocb;
1674         IOCB_t *irsp;
1675         ADISC *ap;
1676         int rc;
1677
1678         cmdiocb = (struct lpfc_iocbq *) arg;
1679         rspiocb = cmdiocb->context_un.rsp_iocb;
1680
1681         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1682         irsp = &rspiocb->iocb;
1683
1684         if ((irsp->ulpStatus) ||
1685             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1686                 /* 1 sec timeout */
1687                 mod_timer(&ndlp->nlp_delayfunc,
1688                           jiffies + msecs_to_jiffies(1000));
1689                 spin_lock_irq(&ndlp->lock);
1690                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1691                 spin_unlock_irq(&ndlp->lock);
1692                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1693
1694                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1695                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1696                 lpfc_unreg_rpi(vport, ndlp);
1697                 return ndlp->nlp_state;
1698         }
1699
1700         if (phba->sli_rev == LPFC_SLI_REV4) {
1701                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1702                 if (rc) {
1703                         /* Stay in state and retry. */
1704                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1705                         return ndlp->nlp_state;
1706                 }
1707         }
1708
1709         if (ndlp->nlp_type & NLP_FCP_TARGET)
1710                 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1711
1712         if (ndlp->nlp_type & NLP_NVME_TARGET)
1713                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1714
1715         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1716                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1717                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1718         } else {
1719                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1720                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1721         }
1722
1723         return ndlp->nlp_state;
1724 }
1725
1726 static uint32_t
1727 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1728                            void *arg, uint32_t evt)
1729 {
1730         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1731                 spin_lock_irq(&ndlp->lock);
1732                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1733                 spin_unlock_irq(&ndlp->lock);
1734                 return ndlp->nlp_state;
1735         } else {
1736                 /* software abort outstanding ADISC */
1737                 lpfc_els_abort(vport->phba, ndlp);
1738
1739                 lpfc_drop_node(vport, ndlp);
1740                 return NLP_STE_FREED_NODE;
1741         }
1742 }
1743
1744 static uint32_t
1745 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1746                               struct lpfc_nodelist *ndlp,
1747                               void *arg,
1748                               uint32_t evt)
1749 {
1750         struct lpfc_hba  *phba = vport->phba;
1751
1752         /* Don't do anything that will mess up processing of the
1753          * previous RSCN.
1754          */
1755         if (vport->fc_flag & FC_RSCN_DEFERRED)
1756                 return ndlp->nlp_state;
1757
1758         /* software abort outstanding ADISC */
1759         lpfc_els_abort(phba, ndlp);
1760
1761         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1762         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1763         spin_lock_irq(&ndlp->lock);
1764         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1765         spin_unlock_irq(&ndlp->lock);
1766         lpfc_disc_set_adisc(vport, ndlp);
1767         return ndlp->nlp_state;
1768 }
1769
1770 static uint32_t
1771 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1772                               struct lpfc_nodelist *ndlp,
1773                               void *arg,
1774                               uint32_t evt)
1775 {
1776         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1777
1778         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1779         return ndlp->nlp_state;
1780 }
1781
1782 static uint32_t
1783 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1784                              struct lpfc_nodelist *ndlp,
1785                              void *arg,
1786                              uint32_t evt)
1787 {
1788         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1789         struct ls_rjt     stat;
1790
1791         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1792                 return ndlp->nlp_state;
1793         }
1794         if (vport->phba->nvmet_support) {
1795                 /* NVME Target mode.  Handle and respond to the PRLI and
1796                  * transition to UNMAPPED provided the RPI has completed
1797                  * registration.
1798                  */
1799                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1800                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1801                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1802                 } else {
1803                         /* RPI registration has not completed. Reject the PRLI
1804                          * to prevent an illegal state transition when the
1805                          * rpi registration does complete.
1806                          */
1807                         memset(&stat, 0, sizeof(struct ls_rjt));
1808                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1809                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1810                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1811                                             ndlp, NULL);
1812                         return ndlp->nlp_state;
1813                 }
1814         } else {
1815                 /* Initiator mode. */
1816                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1817         }
1818         return ndlp->nlp_state;
1819 }
1820
1821 static uint32_t
1822 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1823                              struct lpfc_nodelist *ndlp,
1824                              void *arg,
1825                              uint32_t evt)
1826 {
1827         struct lpfc_hba   *phba = vport->phba;
1828         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1829         LPFC_MBOXQ_t      *mb;
1830         LPFC_MBOXQ_t      *nextmb;
1831         struct lpfc_dmabuf *mp;
1832         struct lpfc_nodelist *ns_ndlp;
1833
1834         cmdiocb = (struct lpfc_iocbq *) arg;
1835
1836         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1837         if ((mb = phba->sli.mbox_active)) {
1838                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1839                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1840                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1841                         lpfc_nlp_put(ndlp);
1842                         mb->ctx_ndlp = NULL;
1843                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1844                 }
1845         }
1846
1847         spin_lock_irq(&phba->hbalock);
1848         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1849                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1850                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1851                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1852                         if (mp) {
1853                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1854                                 kfree(mp);
1855                         }
1856                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1857                         lpfc_nlp_put(ndlp);
1858                         list_del(&mb->list);
1859                         phba->sli.mboxq_cnt--;
1860                         mempool_free(mb, phba->mbox_mem_pool);
1861                 }
1862         }
1863         spin_unlock_irq(&phba->hbalock);
1864
1865         /* software abort if any GID_FT is outstanding */
1866         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1867                 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1868                 if (ns_ndlp)
1869                         lpfc_els_abort(phba, ns_ndlp);
1870         }
1871
1872         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1873         return ndlp->nlp_state;
1874 }
1875
1876 static uint32_t
1877 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1878                                struct lpfc_nodelist *ndlp,
1879                                void *arg,
1880                                uint32_t evt)
1881 {
1882         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1883
1884         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1885         return ndlp->nlp_state;
1886 }
1887
1888 static uint32_t
1889 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1890                              struct lpfc_nodelist *ndlp,
1891                              void *arg,
1892                              uint32_t evt)
1893 {
1894         struct lpfc_iocbq *cmdiocb;
1895
1896         cmdiocb = (struct lpfc_iocbq *) arg;
1897         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1898         return ndlp->nlp_state;
1899 }
1900
1901 static uint32_t
1902 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1903                                   struct lpfc_nodelist *ndlp,
1904                                   void *arg,
1905                                   uint32_t evt)
1906 {
1907         struct lpfc_hba *phba = vport->phba;
1908         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1909         MAILBOX_t *mb = &pmb->u.mb;
1910         uint32_t did  = mb->un.varWords[1];
1911
1912         if (mb->mbxStatus) {
1913                 /* RegLogin failed */
1914                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1915                                  "0246 RegLogin failed Data: x%x x%x x%x x%x "
1916                                  "x%x\n",
1917                                  did, mb->mbxStatus, vport->port_state,
1918                                  mb->un.varRegLogin.vpi,
1919                                  mb->un.varRegLogin.rpi);
1920                 /*
1921                  * If RegLogin failed due to lack of HBA resources do not
1922                  * retry discovery.
1923                  */
1924                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1925                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1926                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1927                         return ndlp->nlp_state;
1928                 }
1929
1930                 /* Put ndlp in npr state set plogi timer for 1 sec */
1931                 mod_timer(&ndlp->nlp_delayfunc,
1932                           jiffies + msecs_to_jiffies(1000 * 1));
1933                 spin_lock_irq(&ndlp->lock);
1934                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1935                 spin_unlock_irq(&ndlp->lock);
1936                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1937
1938                 lpfc_issue_els_logo(vport, ndlp, 0);
1939                 return ndlp->nlp_state;
1940         }
1941
1942         /* SLI4 ports have preallocated logical rpis. */
1943         if (phba->sli_rev < LPFC_SLI_REV4)
1944                 ndlp->nlp_rpi = mb->un.varWords[0];
1945
1946         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1947
1948         /* Only if we are not a fabric nport do we issue PRLI */
1949         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1950                          "3066 RegLogin Complete on x%x x%x x%x\n",
1951                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1952         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1953             (phba->nvmet_support == 0)) {
1954                 /* The driver supports FCP and NVME concurrently.  If the
1955                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1956                  * know what PRLI to send yet.  Figure that out now and
1957                  * call PRLI depending on the outcome.
1958                  */
1959                 if (vport->fc_flag & FC_PT2PT) {
1960                         /* If we are pt2pt, there is no Fabric to determine
1961                          * the FC4 type of the remote nport. So if NVME
1962                          * is configured try it.
1963                          */
1964                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1965                         if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
1966                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
1967                             vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1968                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1969                                 /* We need to update the localport also */
1970                                 lpfc_nvme_update_localport(vport);
1971                         }
1972
1973                 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1974                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1975
1976                 } else if (ndlp->nlp_fc4_type == 0) {
1977                         /* If we are only configured for FCP, the driver
1978                          * should just issue PRLI for FCP. Otherwise issue
1979                          * GFT_ID to determine if remote port supports NVME.
1980                          */
1981                         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1982                                 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
1983                                             ndlp->nlp_DID);
1984                                 return ndlp->nlp_state;
1985                         }
1986                         ndlp->nlp_fc4_type = NLP_FC4_FCP;
1987                 }
1988
1989                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1990                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1991                 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
1992                         lpfc_issue_els_logo(vport, ndlp, 0);
1993                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1994                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1995                 }
1996         } else {
1997                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1998                         phba->targetport->port_id = vport->fc_myDID;
1999
2000                 /* Only Fabric ports should transition. NVME target
2001                  * must complete PRLI.
2002                  */
2003                 if (ndlp->nlp_type & NLP_FABRIC) {
2004                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2005                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2006                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2007                 }
2008         }
2009         return ndlp->nlp_state;
2010 }
2011
2012 static uint32_t
2013 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2014                               struct lpfc_nodelist *ndlp,
2015                               void *arg,
2016                               uint32_t evt)
2017 {
2018         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2019                 spin_lock_irq(&ndlp->lock);
2020                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2021                 spin_unlock_irq(&ndlp->lock);
2022                 return ndlp->nlp_state;
2023         } else {
2024                 lpfc_drop_node(vport, ndlp);
2025                 return NLP_STE_FREED_NODE;
2026         }
2027 }
2028
2029 static uint32_t
2030 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2031                                  struct lpfc_nodelist *ndlp,
2032                                  void *arg,
2033                                  uint32_t evt)
2034 {
2035         /* Don't do anything that will mess up processing of the
2036          * previous RSCN.
2037          */
2038         if (vport->fc_flag & FC_RSCN_DEFERRED)
2039                 return ndlp->nlp_state;
2040
2041         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2042         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2043         spin_lock_irq(&ndlp->lock);
2044
2045         /* If we are a target we won't immediately transition into PRLI,
2046          * so if REG_LOGIN already completed we don't need to ignore it.
2047          */
2048         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2049             !vport->phba->nvmet_support)
2050                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2051
2052         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2053         spin_unlock_irq(&ndlp->lock);
2054         lpfc_disc_set_adisc(vport, ndlp);
2055         return ndlp->nlp_state;
2056 }
2057
2058 static uint32_t
2059 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2060                           void *arg, uint32_t evt)
2061 {
2062         struct lpfc_iocbq *cmdiocb;
2063
2064         cmdiocb = (struct lpfc_iocbq *) arg;
2065
2066         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2067         return ndlp->nlp_state;
2068 }
2069
2070 static uint32_t
2071 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2072                          void *arg, uint32_t evt)
2073 {
2074         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2075
2076         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2077                 return ndlp->nlp_state;
2078         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2079         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2080         return ndlp->nlp_state;
2081 }
2082
2083 static uint32_t
2084 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2085                          void *arg, uint32_t evt)
2086 {
2087         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2088
2089         /* Software abort outstanding PRLI before sending acc */
2090         lpfc_els_abort(vport->phba, ndlp);
2091
2092         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2093         return ndlp->nlp_state;
2094 }
2095
2096 static uint32_t
2097 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2098                            void *arg, uint32_t evt)
2099 {
2100         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2101
2102         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2103         return ndlp->nlp_state;
2104 }
2105
2106 /* This routine is envoked when we rcv a PRLO request from a nport
2107  * we are logged into.  We should send back a PRLO rsp setting the
2108  * appropriate bits.
2109  * NEXT STATE = PRLI_ISSUE
2110  */
2111 static uint32_t
2112 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2113                          void *arg, uint32_t evt)
2114 {
2115         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2116
2117         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2118         return ndlp->nlp_state;
2119 }
2120
2121 static uint32_t
2122 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2123                           void *arg, uint32_t evt)
2124 {
2125         struct lpfc_iocbq *cmdiocb, *rspiocb;
2126         struct lpfc_hba   *phba = vport->phba;
2127         IOCB_t *irsp;
2128         PRLI *npr;
2129         struct lpfc_nvme_prli *nvpr;
2130         void *temp_ptr;
2131
2132         cmdiocb = (struct lpfc_iocbq *) arg;
2133         rspiocb = cmdiocb->context_un.rsp_iocb;
2134
2135         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
2136          * format is different so NULL the two PRLI types so that the
2137          * driver correctly gets the correct context.
2138          */
2139         npr = NULL;
2140         nvpr = NULL;
2141         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2142         if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
2143                 npr = (PRLI *) temp_ptr;
2144         else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
2145                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2146
2147         irsp = &rspiocb->iocb;
2148         if (irsp->ulpStatus) {
2149                 if ((vport->port_type == LPFC_NPIV_PORT) &&
2150                     vport->cfg_restrict_login) {
2151                         goto out;
2152                 }
2153
2154                 /* Adjust the nlp_type accordingly if the PRLI failed */
2155                 if (npr)
2156                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2157                 if (nvpr)
2158                         ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2159
2160                 /* We can't set the DSM state till BOTH PRLIs complete */
2161                 goto out_err;
2162         }
2163
2164         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2165             (npr->prliType == PRLI_FCP_TYPE)) {
2166                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2167                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2168                                  npr->initiatorFunc,
2169                                  npr->targetFunc);
2170                 if (npr->initiatorFunc)
2171                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
2172                 if (npr->targetFunc) {
2173                         ndlp->nlp_type |= NLP_FCP_TARGET;
2174                         if (npr->writeXferRdyDis)
2175                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2176                 }
2177                 if (npr->Retry)
2178                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2179
2180         } else if (nvpr &&
2181                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2182                     PRLI_REQ_EXECUTED) &&
2183                    (bf_get_be32(prli_type_code, nvpr) ==
2184                     PRLI_NVME_TYPE)) {
2185
2186                 /* Complete setting up the remote ndlp personality. */
2187                 if (bf_get_be32(prli_init, nvpr))
2188                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
2189
2190                 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2191                     bf_get_be32(prli_conf, nvpr))
2192
2193                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2194                 else
2195                         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2196
2197                 /* Target driver cannot solicit NVME FB. */
2198                 if (bf_get_be32(prli_tgt, nvpr)) {
2199                         /* Complete the nvme target roles.  The transport
2200                          * needs to know if the rport is capable of
2201                          * discovery in addition to its role.
2202                          */
2203                         ndlp->nlp_type |= NLP_NVME_TARGET;
2204                         if (bf_get_be32(prli_disc, nvpr))
2205                                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2206
2207                         /*
2208                          * If prli_fba is set, the Target supports FirstBurst.
2209                          * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2210                          * otherwise it defines the actual size supported by
2211                          * the NVME Target.
2212                          */
2213                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2214                             (phba->cfg_nvme_enable_fb) &&
2215                             (!phba->nvmet_support)) {
2216                                 /* Both sides support FB. The target's first
2217                                  * burst size is a 512 byte encoded value.
2218                                  */
2219                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2220                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2221                                                                  nvpr);
2222
2223                                 /* Expressed in units of 512 bytes */
2224                                 if (ndlp->nvme_fb_size)
2225                                         ndlp->nvme_fb_size <<=
2226                                                 LPFC_NVME_FB_SHIFT;
2227                                 else
2228                                         ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2229                         }
2230                 }
2231
2232                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2233                                  "6029 NVME PRLI Cmpl w1 x%08x "
2234                                  "w4 x%08x w5 x%08x flag x%x, "
2235                                  "fcp_info x%x nlp_type x%x\n",
2236                                  be32_to_cpu(nvpr->word1),
2237                                  be32_to_cpu(nvpr->word4),
2238                                  be32_to_cpu(nvpr->word5),
2239                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
2240                                  ndlp->nlp_type);
2241         }
2242         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2243             (vport->port_type == LPFC_NPIV_PORT) &&
2244              vport->cfg_restrict_login) {
2245 out:
2246                 spin_lock_irq(&ndlp->lock);
2247                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2248                 spin_unlock_irq(&ndlp->lock);
2249                 lpfc_issue_els_logo(vport, ndlp, 0);
2250
2251                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2252                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2253                 return ndlp->nlp_state;
2254         }
2255
2256 out_err:
2257         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2258          * are complete.
2259          */
2260         if (ndlp->fc4_prli_sent == 0) {
2261                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2262                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2263                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2264                 else if (ndlp->nlp_type &
2265                          (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2266                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2267         } else
2268                 lpfc_printf_vlog(vport,
2269                                  KERN_INFO, LOG_ELS,
2270                                  "3067 PRLI's still outstanding "
2271                                  "on x%06x - count %d, Pend Node Mode "
2272                                  "transition...\n",
2273                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2274
2275         return ndlp->nlp_state;
2276 }
2277
2278 /*! lpfc_device_rm_prli_issue
2279  *
2280  * \pre
2281  * \post
2282  * \param   phba
2283  * \param   ndlp
2284  * \param   arg
2285  * \param   evt
2286  * \return  uint32_t
2287  *
2288  * \b Description:
2289  *    This routine is envoked when we a request to remove a nport we are in the
2290  *    process of PRLIing. We should software abort outstanding prli, unreg
2291  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2292  *    on plogi list so it can be freed when LOGO completes.
2293  *
2294  */
2295
2296 static uint32_t
2297 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2298                           void *arg, uint32_t evt)
2299 {
2300         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2301                 spin_lock_irq(&ndlp->lock);
2302                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2303                 spin_unlock_irq(&ndlp->lock);
2304                 return ndlp->nlp_state;
2305         } else {
2306                 /* software abort outstanding PLOGI */
2307                 lpfc_els_abort(vport->phba, ndlp);
2308
2309                 lpfc_drop_node(vport, ndlp);
2310                 return NLP_STE_FREED_NODE;
2311         }
2312 }
2313
2314
2315 /*! lpfc_device_recov_prli_issue
2316  *
2317  * \pre
2318  * \post
2319  * \param   phba
2320  * \param   ndlp
2321  * \param   arg
2322  * \param   evt
2323  * \return  uint32_t
2324  *
2325  * \b Description:
2326  *    The routine is envoked when the state of a device is unknown, like
2327  *    during a link down. We should remove the nodelist entry from the
2328  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2329  *    outstanding PRLI command, then free the node entry.
2330  */
2331 static uint32_t
2332 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2333                              struct lpfc_nodelist *ndlp,
2334                              void *arg,
2335                              uint32_t evt)
2336 {
2337         struct lpfc_hba  *phba = vport->phba;
2338
2339         /* Don't do anything that will mess up processing of the
2340          * previous RSCN.
2341          */
2342         if (vport->fc_flag & FC_RSCN_DEFERRED)
2343                 return ndlp->nlp_state;
2344
2345         /* software abort outstanding PRLI */
2346         lpfc_els_abort(phba, ndlp);
2347
2348         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2349         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2350         spin_lock_irq(&ndlp->lock);
2351         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2352         spin_unlock_irq(&ndlp->lock);
2353         lpfc_disc_set_adisc(vport, ndlp);
2354         return ndlp->nlp_state;
2355 }
2356
2357 static uint32_t
2358 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2359                           void *arg, uint32_t evt)
2360 {
2361         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2362         struct ls_rjt     stat;
2363
2364         memset(&stat, 0, sizeof(struct ls_rjt));
2365         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2366         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2367         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2368         return ndlp->nlp_state;
2369 }
2370
2371 static uint32_t
2372 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2373                          void *arg, uint32_t evt)
2374 {
2375         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2376         struct ls_rjt     stat;
2377
2378         memset(&stat, 0, sizeof(struct ls_rjt));
2379         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2380         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2381         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2382         return ndlp->nlp_state;
2383 }
2384
2385 static uint32_t
2386 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2387                          void *arg, uint32_t evt)
2388 {
2389         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2390
2391         spin_lock_irq(&ndlp->lock);
2392         ndlp->nlp_flag |= NLP_LOGO_ACC;
2393         spin_unlock_irq(&ndlp->lock);
2394         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2395         return ndlp->nlp_state;
2396 }
2397
2398 static uint32_t
2399 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2400                            void *arg, uint32_t evt)
2401 {
2402         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2403         struct ls_rjt     stat;
2404
2405         memset(&stat, 0, sizeof(struct ls_rjt));
2406         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2407         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2408         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2409         return ndlp->nlp_state;
2410 }
2411
2412 static uint32_t
2413 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2414                          void *arg, uint32_t evt)
2415 {
2416         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2417         struct ls_rjt     stat;
2418
2419         memset(&stat, 0, sizeof(struct ls_rjt));
2420         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2421         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2422         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2423         return ndlp->nlp_state;
2424 }
2425
2426 static uint32_t
2427 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2428                           void *arg, uint32_t evt)
2429 {
2430         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2431         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2432         spin_lock_irq(&ndlp->lock);
2433         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2434         spin_unlock_irq(&ndlp->lock);
2435         lpfc_disc_set_adisc(vport, ndlp);
2436         return ndlp->nlp_state;
2437 }
2438
2439 static uint32_t
2440 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2441                           void *arg, uint32_t evt)
2442 {
2443         /*
2444          * DevLoss has timed out and is calling for Device Remove.
2445          * In this case, abort the LOGO and cleanup the ndlp
2446          */
2447
2448         lpfc_unreg_rpi(vport, ndlp);
2449         /* software abort outstanding PLOGI */
2450         lpfc_els_abort(vport->phba, ndlp);
2451         lpfc_drop_node(vport, ndlp);
2452         return NLP_STE_FREED_NODE;
2453 }
2454
2455 static uint32_t
2456 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2457                              struct lpfc_nodelist *ndlp,
2458                              void *arg, uint32_t evt)
2459 {
2460         /*
2461          * Device Recovery events have no meaning for a node with a LOGO
2462          * outstanding.  The LOGO has to complete first and handle the
2463          * node from that point.
2464          */
2465         return ndlp->nlp_state;
2466 }
2467
2468 static uint32_t
2469 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2470                           void *arg, uint32_t evt)
2471 {
2472         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2473
2474         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2475         return ndlp->nlp_state;
2476 }
2477
2478 static uint32_t
2479 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2480                          void *arg, uint32_t evt)
2481 {
2482         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2483
2484         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2485                 return ndlp->nlp_state;
2486
2487         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2488         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2489         return ndlp->nlp_state;
2490 }
2491
2492 static uint32_t
2493 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2494                          void *arg, uint32_t evt)
2495 {
2496         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2497
2498         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2499         return ndlp->nlp_state;
2500 }
2501
2502 static uint32_t
2503 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2504                            void *arg, uint32_t evt)
2505 {
2506         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2507
2508         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2509         return ndlp->nlp_state;
2510 }
2511
2512 static uint32_t
2513 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2514                          void *arg, uint32_t evt)
2515 {
2516         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2517
2518         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2519         return ndlp->nlp_state;
2520 }
2521
2522 static uint32_t
2523 lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
2524                           struct lpfc_nodelist *ndlp,
2525                           void *arg,
2526                           uint32_t evt)
2527 {
2528         lpfc_drop_node(vport, ndlp);
2529         return NLP_STE_FREED_NODE;
2530 }
2531
2532 static uint32_t
2533 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2534                              struct lpfc_nodelist *ndlp,
2535                              void *arg,
2536                              uint32_t evt)
2537 {
2538         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2539         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2540         spin_lock_irq(&ndlp->lock);
2541         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2542         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2543         spin_unlock_irq(&ndlp->lock);
2544         lpfc_disc_set_adisc(vport, ndlp);
2545
2546         return ndlp->nlp_state;
2547 }
2548
2549 static uint32_t
2550 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2551                            void *arg, uint32_t evt)
2552 {
2553         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2554
2555         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2556         return ndlp->nlp_state;
2557 }
2558
2559 static uint32_t
2560 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2561                           void *arg, uint32_t evt)
2562 {
2563         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2564
2565         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2566                 return ndlp->nlp_state;
2567         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2568         return ndlp->nlp_state;
2569 }
2570
2571 static uint32_t
2572 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2573                           void *arg, uint32_t evt)
2574 {
2575         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2576
2577         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2578         return ndlp->nlp_state;
2579 }
2580
2581 static uint32_t
2582 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2583                             struct lpfc_nodelist *ndlp,
2584                             void *arg, uint32_t evt)
2585 {
2586         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2587
2588         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2589         return ndlp->nlp_state;
2590 }
2591
2592 static uint32_t
2593 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2594                           void *arg, uint32_t evt)
2595 {
2596         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2597
2598         /* flush the target */
2599         lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2600
2601         /* Treat like rcv logo */
2602         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2603         return ndlp->nlp_state;
2604 }
2605
2606 static uint32_t
2607 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2608                               struct lpfc_nodelist *ndlp,
2609                               void *arg,
2610                               uint32_t evt)
2611 {
2612         lpfc_disc_set_adisc(vport, ndlp);
2613
2614         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2615         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2616         spin_lock_irq(&ndlp->lock);
2617         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2618         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2619         spin_unlock_irq(&ndlp->lock);
2620         return ndlp->nlp_state;
2621 }
2622
2623 static uint32_t
2624 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2625                         void *arg, uint32_t evt)
2626 {
2627         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2628
2629         /* Ignore PLOGI if we have an outstanding LOGO */
2630         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2631                 return ndlp->nlp_state;
2632         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2633                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2634                 spin_lock_irq(&ndlp->lock);
2635                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2636                 spin_unlock_irq(&ndlp->lock);
2637         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2638                 /* send PLOGI immediately, move to PLOGI issue state */
2639                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2640                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2641                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2642                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2643                 }
2644         }
2645         return ndlp->nlp_state;
2646 }
2647
2648 static uint32_t
2649 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2650                        void *arg, uint32_t evt)
2651 {
2652         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2653         struct ls_rjt     stat;
2654
2655         memset(&stat, 0, sizeof (struct ls_rjt));
2656         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2657         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2658         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2659
2660         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2661                 /*
2662                  * ADISC nodes will be handled in regular discovery path after
2663                  * receiving response from NS.
2664                  *
2665                  * For other nodes, Send PLOGI to trigger an implicit LOGO.
2666                  */
2667                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2668                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2669                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2670                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2671                 }
2672         }
2673         return ndlp->nlp_state;
2674 }
2675
2676 static uint32_t
2677 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2678                        void *arg, uint32_t evt)
2679 {
2680         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2681
2682         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2683         return ndlp->nlp_state;
2684 }
2685
2686 static uint32_t
2687 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2688                          void *arg, uint32_t evt)
2689 {
2690         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2691
2692         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2693         /*
2694          * Do not start discovery if discovery is about to start
2695          * or discovery in progress for this node. Starting discovery
2696          * here will affect the counting of discovery threads.
2697          */
2698         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2699             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2700                 /*
2701                  * ADISC nodes will be handled in regular discovery path after
2702                  * receiving response from NS.
2703                  *
2704                  * For other nodes, Send PLOGI to trigger an implicit LOGO.
2705                  */
2706                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2707                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2708                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2709                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2710                 }
2711         }
2712         return ndlp->nlp_state;
2713 }
2714
2715 static uint32_t
2716 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2717                        void *arg, uint32_t evt)
2718 {
2719         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2720
2721         spin_lock_irq(&ndlp->lock);
2722         ndlp->nlp_flag |= NLP_LOGO_ACC;
2723         spin_unlock_irq(&ndlp->lock);
2724
2725         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2726
2727         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2728                 mod_timer(&ndlp->nlp_delayfunc,
2729                           jiffies + msecs_to_jiffies(1000 * 1));
2730                 spin_lock_irq(&ndlp->lock);
2731                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2732                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2733                 spin_unlock_irq(&ndlp->lock);
2734                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2735         } else {
2736                 spin_lock_irq(&ndlp->lock);
2737                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2738                 spin_unlock_irq(&ndlp->lock);
2739         }
2740         return ndlp->nlp_state;
2741 }
2742
2743 static uint32_t
2744 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2745                          void *arg, uint32_t evt)
2746 {
2747         struct lpfc_iocbq *cmdiocb, *rspiocb;
2748         IOCB_t *irsp;
2749
2750         cmdiocb = (struct lpfc_iocbq *) arg;
2751         rspiocb = cmdiocb->context_un.rsp_iocb;
2752
2753         irsp = &rspiocb->iocb;
2754         if (irsp->ulpStatus) {
2755                 return NLP_STE_FREED_NODE;
2756         }
2757         return ndlp->nlp_state;
2758 }
2759
2760 static uint32_t
2761 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2762                         void *arg, uint32_t evt)
2763 {
2764         struct lpfc_iocbq *cmdiocb, *rspiocb;
2765         IOCB_t *irsp;
2766
2767         cmdiocb = (struct lpfc_iocbq *) arg;
2768         rspiocb = cmdiocb->context_un.rsp_iocb;
2769
2770         irsp = &rspiocb->iocb;
2771         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2772                 lpfc_drop_node(vport, ndlp);
2773                 return NLP_STE_FREED_NODE;
2774         }
2775         return ndlp->nlp_state;
2776 }
2777
2778 static uint32_t
2779 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2780                         void *arg, uint32_t evt)
2781 {
2782         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2783
2784         /* For the fabric port just clear the fc flags. */
2785         if (ndlp->nlp_DID == Fabric_DID) {
2786                 spin_lock_irq(shost->host_lock);
2787                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2788                 spin_unlock_irq(shost->host_lock);
2789         }
2790         lpfc_unreg_rpi(vport, ndlp);
2791         return ndlp->nlp_state;
2792 }
2793
2794 static uint32_t
2795 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2796                          void *arg, uint32_t evt)
2797 {
2798         struct lpfc_iocbq *cmdiocb, *rspiocb;
2799         IOCB_t *irsp;
2800
2801         cmdiocb = (struct lpfc_iocbq *) arg;
2802         rspiocb = cmdiocb->context_un.rsp_iocb;
2803
2804         irsp = &rspiocb->iocb;
2805         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2806                 lpfc_drop_node(vport, ndlp);
2807                 return NLP_STE_FREED_NODE;
2808         }
2809         return ndlp->nlp_state;
2810 }
2811
2812 static uint32_t
2813 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2814                             struct lpfc_nodelist *ndlp,
2815                             void *arg, uint32_t evt)
2816 {
2817         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2818         MAILBOX_t    *mb = &pmb->u.mb;
2819
2820         if (!mb->mbxStatus) {
2821                 /* SLI4 ports have preallocated logical rpis. */
2822                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2823                         ndlp->nlp_rpi = mb->un.varWords[0];
2824                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2825                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2826                         lpfc_unreg_rpi(vport, ndlp);
2827                 }
2828         } else {
2829                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2830                         lpfc_drop_node(vport, ndlp);
2831                         return NLP_STE_FREED_NODE;
2832                 }
2833         }
2834         return ndlp->nlp_state;
2835 }
2836
2837 static uint32_t
2838 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2839                         void *arg, uint32_t evt)
2840 {
2841         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2842                 spin_lock_irq(&ndlp->lock);
2843                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2844                 spin_unlock_irq(&ndlp->lock);
2845                 return ndlp->nlp_state;
2846         }
2847         lpfc_drop_node(vport, ndlp);
2848         return NLP_STE_FREED_NODE;
2849 }
2850
2851 static uint32_t
2852 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2853                            void *arg, uint32_t evt)
2854 {
2855         /* Don't do anything that will mess up processing of the
2856          * previous RSCN.
2857          */
2858         if (vport->fc_flag & FC_RSCN_DEFERRED)
2859                 return ndlp->nlp_state;
2860
2861         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2862         spin_lock_irq(&ndlp->lock);
2863         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2864         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2865         spin_unlock_irq(&ndlp->lock);
2866         return ndlp->nlp_state;
2867 }
2868
2869
2870 /* This next section defines the NPort Discovery State Machine */
2871
2872 /* There are 4 different double linked lists nodelist entries can reside on.
2873  * The plogi list and adisc list are used when Link Up discovery or RSCN
2874  * processing is needed. Each list holds the nodes that we will send PLOGI
2875  * or ADISC on. These lists will keep track of what nodes will be effected
2876  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2877  * The unmapped_list will contain all nodes that we have successfully logged
2878  * into at the Fibre Channel level. The mapped_list will contain all nodes
2879  * that are mapped FCP targets.
2880  */
2881 /*
2882  * The bind list is a list of undiscovered (potentially non-existent) nodes
2883  * that we have saved binding information on. This information is used when
2884  * nodes transition from the unmapped to the mapped list.
2885  */
2886 /* For UNUSED_NODE state, the node has just been allocated .
2887  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2888  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2889  * and put on the unmapped list. For ADISC processing, the node is taken off
2890  * the ADISC list and placed on either the mapped or unmapped list (depending
2891  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2892  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2893  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2894  * node, the node is taken off the unmapped list. The binding list is checked
2895  * for a valid binding, or a binding is automatically assigned. If binding
2896  * assignment is unsuccessful, the node is left on the unmapped list. If
2897  * binding assignment is successful, the associated binding list entry (if
2898  * any) is removed, and the node is placed on the mapped list.
2899  */
2900 /*
2901  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2902  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2903  * expire, all effected nodes will receive a DEVICE_RM event.
2904  */
2905 /*
2906  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2907  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2908  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2909  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2910  * we will first process the ADISC list.  32 entries are processed initially and
2911  * ADISC is initited for each one.  Completions / Events for each node are
2912  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2913  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2914  * waiting, and the ADISC list count is identically 0, then we are done. For
2915  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2916  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2917  * list.  32 entries are processed initially and PLOGI is initited for each one.
2918  * Completions / Events for each node are funnelled thru the state machine.  As
2919  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2920  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2921  * indentically 0, then we are done. We have now completed discovery / RSCN
2922  * handling. Upon completion, ALL nodes should be on either the mapped or
2923  * unmapped lists.
2924  */
2925
2926 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2927      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2928         /* Action routine                  Event       Current State  */
2929         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2930         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2931         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2932         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2933         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2934         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2935         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2936         lpfc_disc_illegal,              /* CMPL_PRLI       */
2937         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2938         lpfc_disc_illegal,              /* CMPL_ADISC      */
2939         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2940         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2941         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2942
2943         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2944         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2945         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2946         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2947         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2948         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2949         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2950         lpfc_disc_illegal,              /* CMPL_PRLI       */
2951         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2952         lpfc_disc_illegal,              /* CMPL_ADISC      */
2953         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2954         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2955         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2956
2957         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2958         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2959         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2960         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2961         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2962         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2963         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2964         lpfc_disc_illegal,              /* CMPL_PRLI       */
2965         lpfc_disc_illegal,              /* CMPL_LOGO       */
2966         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2967         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2968         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2969         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2970
2971         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2972         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2973         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2974         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2975         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2976         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2977         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2978         lpfc_disc_illegal,              /* CMPL_PRLI       */
2979         lpfc_disc_illegal,              /* CMPL_LOGO       */
2980         lpfc_disc_illegal,              /* CMPL_ADISC      */
2981         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2982         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2983         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2984
2985         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2986         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2987         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2988         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2989         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2990         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2991         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2992         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2993         lpfc_disc_illegal,              /* CMPL_LOGO       */
2994         lpfc_disc_illegal,              /* CMPL_ADISC      */
2995         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2996         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2997         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2998
2999         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
3000         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
3001         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
3002         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
3003         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
3004         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
3005         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3006         lpfc_disc_illegal,              /* CMPL_PRLI       */
3007         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
3008         lpfc_disc_illegal,              /* CMPL_ADISC      */
3009         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3010         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
3011         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
3012
3013         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
3014         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
3015         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
3016         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
3017         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
3018         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
3019         lpfc_disc_illegal,              /* CMPL_PLOGI      */
3020         lpfc_disc_illegal,              /* CMPL_PRLI       */
3021         lpfc_disc_illegal,              /* CMPL_LOGO       */
3022         lpfc_disc_illegal,              /* CMPL_ADISC      */
3023         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3024         lpfc_device_rm_unmap_node,      /* DEVICE_RM       */
3025         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
3026
3027         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
3028         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
3029         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
3030         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
3031         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
3032         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
3033         lpfc_disc_illegal,              /* CMPL_PLOGI      */
3034         lpfc_disc_illegal,              /* CMPL_PRLI       */
3035         lpfc_disc_illegal,              /* CMPL_LOGO       */
3036         lpfc_disc_illegal,              /* CMPL_ADISC      */
3037         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3038         lpfc_disc_illegal,              /* DEVICE_RM       */
3039         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
3040
3041         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
3042         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
3043         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
3044         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
3045         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
3046         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
3047         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
3048         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
3049         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
3050         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
3051         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
3052         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
3053         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
3054 };
3055
3056 int
3057 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3058                         void *arg, uint32_t evt)
3059 {
3060         uint32_t cur_state, rc;
3061         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3062                          uint32_t);
3063         uint32_t got_ndlp = 0;
3064         uint32_t data1;
3065
3066         if (lpfc_nlp_get(ndlp))
3067                 got_ndlp = 1;
3068
3069         cur_state = ndlp->nlp_state;
3070
3071         data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3072                 ((uint32_t)ndlp->nlp_type));
3073         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3074         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3075                          "0211 DSM in event x%x on NPort x%x in "
3076                          "state %d rpi x%x Data: x%x x%x\n",
3077                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3078                          ndlp->nlp_flag, data1);
3079
3080         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3081                  "DSM in:          evt:%d ste:%d did:x%x",
3082                 evt, cur_state, ndlp->nlp_DID);
3083
3084         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3085         rc = (func) (vport, ndlp, arg, evt);
3086
3087         /* DSM out state <rc> on NPort <nlp_DID> */
3088         if (got_ndlp) {
3089                 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3090                         ((uint32_t)ndlp->nlp_type));
3091                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3092                          "0212 DSM out state %d on NPort x%x "
3093                          "rpi x%x Data: x%x x%x\n",
3094                          rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3095                          data1);
3096
3097                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3098                         "DSM out:         ste:%d did:x%x flg:x%x",
3099                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
3100                 /* Decrement the ndlp reference count held for this function */
3101                 lpfc_nlp_put(ndlp);
3102         } else {
3103                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3104                         "0213 DSM out state %d on NPort free\n", rc);
3105
3106                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3107                         "DSM out:         ste:%d did:x%x flg:x%x",
3108                         rc, 0, 0);
3109         }
3110
3111         return rc;
3112 }