drivers/scsi/lpfc/lpfc

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This source file includes following definitions.
lpfc_check_adisc
lpfc_check_sparm
lpfc_check_elscmpl_iocb
lpfc_els_abort
lpfc_rcv_plogi
lpfc_mbx_cmpl_resume_rpi
lpfc_rcv_padisc
lpfc_rcv_logo
lpfc_rcv_prli_support_check
lpfc_rcv_prli
lpfc_disc_set_adisc
lpfc_release_rpi
lpfc_disc_illegal
lpfc_cmpl_plogi_illegal
lpfc_rcv_plogi_unused_node
lpfc_rcv_els_unused_node
lpfc_rcv_logo_unused_node
lpfc_cmpl_logo_unused_node
lpfc_device_rm_unused_node
lpfc_device_recov_unused_node
lpfc_rcv_plogi_plogi_issue
lpfc_rcv_prli_plogi_issue
lpfc_rcv_logo_plogi_issue
lpfc_rcv_els_plogi_issue
lpfc_cmpl_plogi_plogi_issue
lpfc_cmpl_logo_plogi_issue
lpfc_cmpl_reglogin_plogi_issue
lpfc_device_rm_plogi_issue
lpfc_device_recov_plogi_issue
lpfc_rcv_plogi_adisc_issue
lpfc_rcv_prli_adisc_issue
lpfc_rcv_logo_adisc_issue
lpfc_rcv_padisc_adisc_issue
lpfc_rcv_prlo_adisc_issue
lpfc_cmpl_adisc_adisc_issue
lpfc_device_rm_adisc_issue
lpfc_device_recov_adisc_issue
lpfc_rcv_plogi_reglogin_issue
lpfc_rcv_prli_reglogin_issue
lpfc_rcv_logo_reglogin_issue
lpfc_rcv_padisc_reglogin_issue
lpfc_rcv_prlo_reglogin_issue
lpfc_cmpl_reglogin_reglogin_issue
lpfc_device_rm_reglogin_issue
lpfc_device_recov_reglogin_issue
lpfc_rcv_plogi_prli_issue
lpfc_rcv_prli_prli_issue
lpfc_rcv_logo_prli_issue
lpfc_rcv_padisc_prli_issue
lpfc_rcv_prlo_prli_issue
lpfc_cmpl_prli_prli_issue
lpfc_device_rm_prli_issue
lpfc_device_recov_prli_issue
lpfc_rcv_plogi_logo_issue
lpfc_rcv_prli_logo_issue
lpfc_rcv_logo_logo_issue
lpfc_rcv_padisc_logo_issue
lpfc_rcv_prlo_logo_issue
lpfc_cmpl_logo_logo_issue
lpfc_device_rm_logo_issue
lpfc_device_recov_logo_issue
lpfc_rcv_plogi_unmap_node
lpfc_rcv_prli_unmap_node
lpfc_rcv_logo_unmap_node
lpfc_rcv_padisc_unmap_node
lpfc_rcv_prlo_unmap_node
lpfc_device_recov_unmap_node
lpfc_rcv_plogi_mapped_node
lpfc_rcv_prli_mapped_node
lpfc_rcv_logo_mapped_node
lpfc_rcv_padisc_mapped_node
lpfc_rcv_prlo_mapped_node
lpfc_device_recov_mapped_node
lpfc_rcv_plogi_npr_node
lpfc_rcv_prli_npr_node
lpfc_rcv_logo_npr_node
lpfc_rcv_padisc_npr_node
lpfc_rcv_prlo_npr_node
lpfc_cmpl_plogi_npr_node
lpfc_cmpl_prli_npr_node
lpfc_cmpl_logo_npr_node
lpfc_cmpl_adisc_npr_node
lpfc_cmpl_reglogin_npr_node
lpfc_device_rm_npr_node
lpfc_device_recov_npr_node
lpfc_disc_state_machine
   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2019 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 <linux/nvme-fc-driver.h>
  36 
  37 #include "lpfc_hw4.h"
  38 #include "lpfc_hw.h"
  39 #include "lpfc_sli.h"
  40 #include "lpfc_sli4.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc.h"
  44 #include "lpfc_scsi.h"
  45 #include "lpfc_nvme.h"
  46 #include "lpfc_logmsg.h"
  47 #include "lpfc_crtn.h"
  48 #include "lpfc_vport.h"
  49 #include "lpfc_debugfs.h"
  50 
  51 
  52 /* Called to verify a rcv'ed ADISC was intended for us. */
  53 static int
  54 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  55                  struct lpfc_name *nn, struct lpfc_name *pn)
  56 {
  57         /* First, we MUST have a RPI registered */
  58         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  59                 return 0;
  60 
  61         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  62          * table entry for that node.
  63          */
  64         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  65                 return 0;
  66 
  67         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  68                 return 0;
  69 
  70         /* we match, return success */
  71         return 1;
  72 }
  73 
  74 int
  75 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  76                  struct serv_parm *sp, uint32_t class, int flogi)
  77 {
  78         volatile struct serv_parm *hsp = &vport->fc_sparam;
  79         uint16_t hsp_value, ssp_value = 0;
  80 
  81         /*
  82          * The receive data field size and buffer-to-buffer receive data field
  83          * size entries are 16 bits but are represented as two 8-bit fields in
  84          * the driver data structure to account for rsvd bits and other control
  85          * bits.  Reconstruct and compare the fields as a 16-bit values before
  86          * correcting the byte values.
  87          */
  88         if (sp->cls1.classValid) {
  89                 if (!flogi) {
  90                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  91                                      hsp->cls1.rcvDataSizeLsb);
  92                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  93                                      sp->cls1.rcvDataSizeLsb);
  94                         if (!ssp_value)
  95                                 goto bad_service_param;
  96                         if (ssp_value > hsp_value) {
  97                                 sp->cls1.rcvDataSizeLsb =
  98                                         hsp->cls1.rcvDataSizeLsb;
  99                                 sp->cls1.rcvDataSizeMsb =
 100                                         hsp->cls1.rcvDataSizeMsb;
 101                         }
 102                 }
 103         } else if (class == CLASS1)
 104                 goto bad_service_param;
 105         if (sp->cls2.classValid) {
 106                 if (!flogi) {
 107                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 108                                      hsp->cls2.rcvDataSizeLsb);
 109                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 110                                      sp->cls2.rcvDataSizeLsb);
 111                         if (!ssp_value)
 112                                 goto bad_service_param;
 113                         if (ssp_value > hsp_value) {
 114                                 sp->cls2.rcvDataSizeLsb =
 115                                         hsp->cls2.rcvDataSizeLsb;
 116                                 sp->cls2.rcvDataSizeMsb =
 117                                         hsp->cls2.rcvDataSizeMsb;
 118                         }
 119                 }
 120         } else if (class == CLASS2)
 121                 goto bad_service_param;
 122         if (sp->cls3.classValid) {
 123                 if (!flogi) {
 124                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 125                                      hsp->cls3.rcvDataSizeLsb);
 126                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 127                                      sp->cls3.rcvDataSizeLsb);
 128                         if (!ssp_value)
 129                                 goto bad_service_param;
 130                         if (ssp_value > hsp_value) {
 131                                 sp->cls3.rcvDataSizeLsb =
 132                                         hsp->cls3.rcvDataSizeLsb;
 133                                 sp->cls3.rcvDataSizeMsb =
 134                                         hsp->cls3.rcvDataSizeMsb;
 135                         }
 136                 }
 137         } else if (class == CLASS3)
 138                 goto bad_service_param;
 139 
 140         /*
 141          * Preserve the upper four bits of the MSB from the PLOGI response.
 142          * These bits contain the Buffer-to-Buffer State Change Number
 143          * from the target and need to be passed to the FW.
 144          */
 145         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 146         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 147         if (ssp_value > hsp_value) {
 148                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 149                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 150                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 151         }
 152 
 153         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 154         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 155         return 1;
 156 bad_service_param:
 157         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 158                          "0207 Device %x "
 159                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 160                          "invalid service parameters.  Ignoring device.\n",
 161                          ndlp->nlp_DID,
 162                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 163                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 164                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 165                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 166         return 0;
 167 }
 168 
 169 static void *
 170 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 171                         struct lpfc_iocbq *rspiocb)
 172 {
 173         struct lpfc_dmabuf *pcmd, *prsp;
 174         uint32_t *lp;
 175         void     *ptr = NULL;
 176         IOCB_t   *irsp;
 177 
 178         irsp = &rspiocb->iocb;
 179         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 180 
 181         /* For lpfc_els_abort, context2 could be zero'ed to delay
 182          * freeing associated memory till after ABTS completes.
 183          */
 184         if (pcmd) {
 185                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 186                                        list);
 187                 if (prsp) {
 188                         lp = (uint32_t *) prsp->virt;
 189                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 190                 }
 191         } else {
 192                 /* Force ulpStatus error since we are returning NULL ptr */
 193                 if (!(irsp->ulpStatus)) {
 194                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 195                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 196                 }
 197                 ptr = NULL;
 198         }
 199         return ptr;
 200 }
 201 
 202 
 203 
 204 /*
 205  * Free resources / clean up outstanding I/Os
 206  * associated with a LPFC_NODELIST entry. This
 207  * routine effectively results in a "software abort".
 208  */
 209 void
 210 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 211 {
 212         LIST_HEAD(abort_list);
 213         struct lpfc_sli_ring *pring;
 214         struct lpfc_iocbq *iocb, *next_iocb;
 215 
 216         pring = lpfc_phba_elsring(phba);
 217 
 218         /* In case of error recovery path, we might have a NULL pring here */
 219         if (unlikely(!pring))
 220                 return;
 221 
 222         /* Abort outstanding I/O on NPort <nlp_DID> */
 223         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 224                          "2819 Abort outstanding I/O on NPort x%x "
 225                          "Data: x%x x%x x%x\n",
 226                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 227                          ndlp->nlp_rpi);
 228         /* Clean up all fabric IOs first.*/
 229         lpfc_fabric_abort_nport(ndlp);
 230 
 231         /*
 232          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 233          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 234          * txcmplq so that the abort operation completes them successfully.
 235          */
 236         spin_lock_irq(&phba->hbalock);
 237         if (phba->sli_rev == LPFC_SLI_REV4)
 238                 spin_lock(&pring->ring_lock);
 239         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 240         /* Add to abort_list on on NDLP match. */
 241                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 242                         list_add_tail(&iocb->dlist, &abort_list);
 243         }
 244         if (phba->sli_rev == LPFC_SLI_REV4)
 245                 spin_unlock(&pring->ring_lock);
 246         spin_unlock_irq(&phba->hbalock);
 247 
 248         /* Abort the targeted IOs and remove them from the abort list. */
 249         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 250                         spin_lock_irq(&phba->hbalock);
 251                         list_del_init(&iocb->dlist);
 252                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 253                         spin_unlock_irq(&phba->hbalock);
 254         }
 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 static int
 283 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 284                struct lpfc_iocbq *cmdiocb)
 285 {
 286         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 287         struct lpfc_hba    *phba = vport->phba;
 288         struct lpfc_dmabuf *pcmd;
 289         uint64_t nlp_portwwn = 0;
 290         uint32_t *lp;
 291         IOCB_t *icmd;
 292         struct serv_parm *sp;
 293         uint32_t ed_tov;
 294         LPFC_MBOXQ_t *mbox;
 295         struct ls_rjt stat;
 296         uint32_t vid, flag;
 297         int rc;
 298 
 299         memset(&stat, 0, sizeof (struct ls_rjt));
 300         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 301         lp = (uint32_t *) pcmd->virt;
 302         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 303         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 304                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 305                                  "0140 PLOGI Reject: invalid nname\n");
 306                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 307                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 308                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 309                         NULL);
 310                 return 0;
 311         }
 312         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 313                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 314                                  "0141 PLOGI Reject: invalid pname\n");
 315                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 316                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 317                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 318                         NULL);
 319                 return 0;
 320         }
 321 
 322         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 323         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 324                 /* Reject this request because invalid parameters */
 325                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 326                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 327                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 328                         NULL);
 329                 return 0;
 330         }
 331         icmd = &cmdiocb->iocb;
 332 
 333         /* PLOGI chkparm OK */
 334         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 335                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 336                          "x%x x%x x%x\n",
 337                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 338                          ndlp->nlp_rpi, vport->port_state,
 339                          vport->fc_flag);
 340 
 341         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 342                 ndlp->nlp_fcp_info |= CLASS2;
 343         else
 344                 ndlp->nlp_fcp_info |= CLASS3;
 345 
 346         ndlp->nlp_class_sup = 0;
 347         if (sp->cls1.classValid)
 348                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 349         if (sp->cls2.classValid)
 350                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 351         if (sp->cls3.classValid)
 352                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 353         if (sp->cls4.classValid)
 354                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 355         ndlp->nlp_maxframe =
 356                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 357 
 358         /* if already logged in, do implicit logout */
 359         switch (ndlp->nlp_state) {
 360         case  NLP_STE_NPR_NODE:
 361                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 362                         break;
 363                 /* fall through */
 364         case  NLP_STE_REG_LOGIN_ISSUE:
 365         case  NLP_STE_PRLI_ISSUE:
 366         case  NLP_STE_UNMAPPED_NODE:
 367         case  NLP_STE_MAPPED_NODE:
 368                 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
 369                  * For target mode, execute implicit logo.
 370                  * Fabric nodes go into NPR.
 371                  */
 372                 if (!(ndlp->nlp_type & NLP_FABRIC) &&
 373                     !(phba->nvmet_support)) {
 374                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 375                                          ndlp, NULL);
 376                         return 1;
 377                 }
 378                 if (nlp_portwwn != 0 &&
 379                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 380                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 381                                          "0143 PLOGI recv'd from DID: x%x "
 382                                          "WWPN changed: old %llx new %llx\n",
 383                                          ndlp->nlp_DID,
 384                                          (unsigned long long)nlp_portwwn,
 385                                          (unsigned long long)
 386                                          wwn_to_u64(sp->portName.u.wwn));
 387 
 388                 ndlp->nlp_prev_state = ndlp->nlp_state;
 389                 /* rport needs to be unregistered first */
 390                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 391                 break;
 392         }
 393 
 394         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 395         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
 396         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 397         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 398 
 399         /* Check for Nport to NPort pt2pt protocol */
 400         if ((vport->fc_flag & FC_PT2PT) &&
 401             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 402                 /* rcv'ed PLOGI decides what our NPortId will be */
 403                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 404 
 405                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 406                 if (sp->cmn.edtovResolution) {
 407                         /* E_D_TOV ticks are in nanoseconds */
 408                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 409                 }
 410 
 411                 /*
 412                  * For pt-to-pt, use the larger EDTOV
 413                  * RATOV = 2 * EDTOV
 414                  */
 415                 if (ed_tov > phba->fc_edtov)
 416                         phba->fc_edtov = ed_tov;
 417                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 418 
 419                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 420 
 421                 /* Issue config_link / reg_vfi to account for updated TOV's */
 422 
 423                 if (phba->sli_rev == LPFC_SLI_REV4)
 424                         lpfc_issue_reg_vfi(vport);
 425                 else {
 426                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 427                         if (mbox == NULL)
 428                                 goto out;
 429                         lpfc_config_link(phba, mbox);
 430                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 431                         mbox->vport = vport;
 432                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 433                         if (rc == MBX_NOT_FINISHED) {
 434                                 mempool_free(mbox, phba->mbox_mem_pool);
 435                                 goto out;
 436                         }
 437                 }
 438 
 439                 lpfc_can_disctmo(vport);
 440         }
 441 
 442         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
 443         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
 444             sp->cmn.valid_vendor_ver_level) {
 445                 vid = be32_to_cpu(sp->un.vv.vid);
 446                 flag = be32_to_cpu(sp->un.vv.flags);
 447                 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
 448                         ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
 449         }
 450 
 451         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 452         if (!mbox)
 453                 goto out;
 454 
 455         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 456         if (phba->sli_rev == LPFC_SLI_REV4)
 457                 lpfc_unreg_rpi(vport, ndlp);
 458 
 459         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 460                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 461         if (rc) {
 462                 mempool_free(mbox, phba->mbox_mem_pool);
 463                 goto out;
 464         }
 465 
 466         /* ACC PLOGI rsp command needs to execute first,
 467          * queue this mbox command to be processed later.
 468          */
 469         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 470         /*
 471          * mbox->ctx_ndlp = lpfc_nlp_get(ndlp) deferred until mailbox
 472          * command issued in lpfc_cmpl_els_acc().
 473          */
 474         mbox->vport = vport;
 475         spin_lock_irq(shost->host_lock);
 476         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 477         spin_unlock_irq(shost->host_lock);
 478 
 479         /*
 480          * If there is an outstanding PLOGI issued, abort it before
 481          * sending ACC rsp for received PLOGI. If pending plogi
 482          * is not canceled here, the plogi will be rejected by
 483          * remote port and will be retried. On a configuration with
 484          * single discovery thread, this will cause a huge delay in
 485          * discovery. Also this will cause multiple state machines
 486          * running in parallel for this node.
 487          * This only applies to a fabric environment.
 488          */
 489         if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
 490             (vport->fc_flag & FC_FABRIC)) {
 491                 /* software abort outstanding PLOGI */
 492                 lpfc_els_abort(phba, ndlp);
 493         }
 494 
 495         if ((vport->port_type == LPFC_NPIV_PORT &&
 496              vport->cfg_restrict_login)) {
 497 
 498                 /* In order to preserve RPIs, we want to cleanup
 499                  * the default RPI the firmware created to rcv
 500                  * this ELS request. The only way to do this is
 501                  * to register, then unregister the RPI.
 502                  */
 503                 spin_lock_irq(shost->host_lock);
 504                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 505                 spin_unlock_irq(shost->host_lock);
 506                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 507                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 508                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 509                         ndlp, mbox);
 510                 if (rc)
 511                         mempool_free(mbox, phba->mbox_mem_pool);
 512                 return 1;
 513         }
 514         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 515         if (rc)
 516                 mempool_free(mbox, phba->mbox_mem_pool);
 517         return 1;
 518 out:
 519         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 520         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 521         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 522         return 0;
 523 }
 524 
 525 /**
 526  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 527  * @phba: pointer to lpfc hba data structure.
 528  * @mboxq: pointer to mailbox object
 529  *
 530  * This routine is invoked to issue a completion to a rcv'ed
 531  * ADISC or PDISC after the paused RPI has been resumed.
 532  **/
 533 static void
 534 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 535 {
 536         struct lpfc_vport *vport;
 537         struct lpfc_iocbq *elsiocb;
 538         struct lpfc_nodelist *ndlp;
 539         uint32_t cmd;
 540 
 541         elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
 542         ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
 543         vport = mboxq->vport;
 544         cmd = elsiocb->drvrTimeout;
 545 
 546         if (cmd == ELS_CMD_ADISC) {
 547                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 548         } else {
 549                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 550                         ndlp, NULL);
 551         }
 552         kfree(elsiocb);
 553         mempool_free(mboxq, phba->mbox_mem_pool);
 554 }
 555 
 556 static int
 557 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 558                 struct lpfc_iocbq *cmdiocb)
 559 {
 560         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 561         struct lpfc_iocbq  *elsiocb;
 562         struct lpfc_dmabuf *pcmd;
 563         struct serv_parm   *sp;
 564         struct lpfc_name   *pnn, *ppn;
 565         struct ls_rjt stat;
 566         ADISC *ap;
 567         IOCB_t *icmd;
 568         uint32_t *lp;
 569         uint32_t cmd;
 570 
 571         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 572         lp = (uint32_t *) pcmd->virt;
 573 
 574         cmd = *lp++;
 575         if (cmd == ELS_CMD_ADISC) {
 576                 ap = (ADISC *) lp;
 577                 pnn = (struct lpfc_name *) & ap->nodeName;
 578                 ppn = (struct lpfc_name *) & ap->portName;
 579         } else {
 580                 sp = (struct serv_parm *) lp;
 581                 pnn = (struct lpfc_name *) & sp->nodeName;
 582                 ppn = (struct lpfc_name *) & sp->portName;
 583         }
 584 
 585         icmd = &cmdiocb->iocb;
 586         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 587 
 588                 /*
 589                  * As soon as  we send ACC, the remote NPort can
 590                  * start sending us data. Thus, for SLI4 we must
 591                  * resume the RPI before the ACC goes out.
 592                  */
 593                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 594                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 595                                 GFP_KERNEL);
 596                         if (elsiocb) {
 597 
 598                                 /* Save info from cmd IOCB used in rsp */
 599                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 600                                         sizeof(struct lpfc_iocbq));
 601 
 602                                 /* Save the ELS cmd */
 603                                 elsiocb->drvrTimeout = cmd;
 604 
 605                                 lpfc_sli4_resume_rpi(ndlp,
 606                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 607                                 goto out;
 608                         }
 609                 }
 610 
 611                 if (cmd == ELS_CMD_ADISC) {
 612                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 613                 } else {
 614                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 615                                 ndlp, NULL);
 616                 }
 617 out:
 618                 /* If we are authenticated, move to the proper state */
 619                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
 620                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 621                 else
 622                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 623 
 624                 return 1;
 625         }
 626         /* Reject this request because invalid parameters */
 627         stat.un.b.lsRjtRsvd0 = 0;
 628         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 629         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 630         stat.un.b.vendorUnique = 0;
 631         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 632 
 633         /* 1 sec timeout */
 634         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 635 
 636         spin_lock_irq(shost->host_lock);
 637         ndlp->nlp_flag |= NLP_DELAY_TMO;
 638         spin_unlock_irq(shost->host_lock);
 639         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 640         ndlp->nlp_prev_state = ndlp->nlp_state;
 641         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 642         return 0;
 643 }
 644 
 645 static int
 646 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 647               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 648 {
 649         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 650         struct lpfc_hba    *phba = vport->phba;
 651         struct lpfc_vport **vports;
 652         int i, active_vlink_present = 0 ;
 653 
 654         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 655         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 656          * PLOGIs during LOGO storms from a device.
 657          */
 658         spin_lock_irq(shost->host_lock);
 659         ndlp->nlp_flag |= NLP_LOGO_ACC;
 660         spin_unlock_irq(shost->host_lock);
 661         if (els_cmd == ELS_CMD_PRLO)
 662                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 663         else
 664                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 665         if (ndlp->nlp_DID == Fabric_DID) {
 666                 if (vport->port_state <= LPFC_FDISC)
 667                         goto out;
 668                 lpfc_linkdown_port(vport);
 669                 spin_lock_irq(shost->host_lock);
 670                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 671                 spin_unlock_irq(shost->host_lock);
 672                 vports = lpfc_create_vport_work_array(phba);
 673                 if (vports) {
 674                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 675                                         i++) {
 676                                 if ((!(vports[i]->fc_flag &
 677                                         FC_VPORT_LOGO_RCVD)) &&
 678                                         (vports[i]->port_state > LPFC_FDISC)) {
 679                                         active_vlink_present = 1;
 680                                         break;
 681                                 }
 682                         }
 683                         lpfc_destroy_vport_work_array(phba, vports);
 684                 }
 685 
 686                 /*
 687                  * Don't re-instantiate if vport is marked for deletion.
 688                  * If we are here first then vport_delete is going to wait
 689                  * for discovery to complete.
 690                  */
 691                 if (!(vport->load_flag & FC_UNLOADING) &&
 692                                         active_vlink_present) {
 693                         /*
 694                          * If there are other active VLinks present,
 695                          * re-instantiate the Vlink using FDISC.
 696                          */
 697                         mod_timer(&ndlp->nlp_delayfunc,
 698                                   jiffies + msecs_to_jiffies(1000));
 699                         spin_lock_irq(shost->host_lock);
 700                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 701                         spin_unlock_irq(shost->host_lock);
 702                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 703                         vport->port_state = LPFC_FDISC;
 704                 } else {
 705                         spin_lock_irq(shost->host_lock);
 706                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 707                         spin_unlock_irq(shost->host_lock);
 708                         lpfc_retry_pport_discovery(phba);
 709                 }
 710         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 711                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 712                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 713                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 714                 /* Only try to re-login if this is NOT a Fabric Node */
 715                 mod_timer(&ndlp->nlp_delayfunc,
 716                           jiffies + msecs_to_jiffies(1000 * 1));
 717                 spin_lock_irq(shost->host_lock);
 718                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 719                 spin_unlock_irq(shost->host_lock);
 720 
 721                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 722         }
 723 out:
 724         ndlp->nlp_prev_state = ndlp->nlp_state;
 725         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 726 
 727         spin_lock_irq(shost->host_lock);
 728         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 729         spin_unlock_irq(shost->host_lock);
 730         /* The driver has to wait until the ACC completes before it continues
 731          * processing the LOGO.  The action will resume in
 732          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 733          * unreg_login, the driver waits so the ACC does not get aborted.
 734          */
 735         return 0;
 736 }
 737 
 738 static uint32_t
 739 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
 740                             struct lpfc_nodelist *ndlp,
 741                             struct lpfc_iocbq *cmdiocb)
 742 {
 743         struct ls_rjt stat;
 744         uint32_t *payload;
 745         uint32_t cmd;
 746 
 747         payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
 748         cmd = *payload;
 749         if (vport->phba->nvmet_support) {
 750                 /* Must be a NVME PRLI */
 751                 if (cmd ==  ELS_CMD_PRLI)
 752                         goto out;
 753         } else {
 754                 /* Initiator mode. */
 755                 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
 756                         goto out;
 757         }
 758         return 1;
 759 out:
 760         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
 761                          "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
 762                          "state x%x flags x%x\n",
 763                          cmd, ndlp->nlp_rpi, ndlp->nlp_state,
 764                          ndlp->nlp_flag);
 765         memset(&stat, 0, sizeof(struct ls_rjt));
 766         stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
 767         stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
 768         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 769                             ndlp, NULL);
 770         return 0;
 771 }
 772 
 773 static void
 774 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 775               struct lpfc_iocbq *cmdiocb)
 776 {
 777         struct lpfc_hba  *phba = vport->phba;
 778         struct lpfc_dmabuf *pcmd;
 779         uint32_t *lp;
 780         PRLI *npr;
 781         struct fc_rport *rport = ndlp->rport;
 782         u32 roles;
 783 
 784         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 785         lp = (uint32_t *) pcmd->virt;
 786         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 787 
 788         if ((npr->prliType == PRLI_FCP_TYPE) ||
 789             (npr->prliType == PRLI_NVME_TYPE)) {
 790                 if (npr->initiatorFunc) {
 791                         if (npr->prliType == PRLI_FCP_TYPE)
 792                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 793                         if (npr->prliType == PRLI_NVME_TYPE)
 794                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 795                 }
 796                 if (npr->targetFunc) {
 797                         if (npr->prliType == PRLI_FCP_TYPE)
 798                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 799                         if (npr->prliType == PRLI_NVME_TYPE)
 800                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 801                         if (npr->writeXferRdyDis)
 802                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 803                 }
 804                 if (npr->Retry && ndlp->nlp_type &
 805                                         (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
 806                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 807 
 808                 if (npr->Retry && phba->nsler &&
 809                     ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
 810                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
 811 
 812 
 813                 /* If this driver is in nvme target mode, set the ndlp's fc4
 814                  * type to NVME provided the PRLI response claims NVME FC4
 815                  * type.  Target mode does not issue gft_id so doesn't get
 816                  * the fc4 type set until now.
 817                  */
 818                 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
 819                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 820                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 821                 }
 822                 if (npr->prliType == PRLI_FCP_TYPE)
 823                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
 824         }
 825         if (rport) {
 826                 /* We need to update the rport role values */
 827                 roles = FC_RPORT_ROLE_UNKNOWN;
 828                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 829                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 830                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 831                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 832 
 833                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 834                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 835                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 836 
 837                 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 838                         fc_remote_port_rolechg(rport, roles);
 839         }
 840 }
 841 
 842 static uint32_t
 843 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 844 {
 845         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 846 
 847         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 848                 spin_lock_irq(shost->host_lock);
 849                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 850                 spin_unlock_irq(shost->host_lock);
 851                 return 0;
 852         }
 853 
 854         if (!(vport->fc_flag & FC_PT2PT)) {
 855                 /* Check config parameter use-adisc or FCP-2 */
 856                 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
 857                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 858                      (ndlp->nlp_type & NLP_FCP_TARGET)))) {
 859                         spin_lock_irq(shost->host_lock);
 860                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 861                         spin_unlock_irq(shost->host_lock);
 862                         return 1;
 863                 }
 864         }
 865 
 866         spin_lock_irq(shost->host_lock);
 867         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 868         spin_unlock_irq(shost->host_lock);
 869         lpfc_unreg_rpi(vport, ndlp);
 870         return 0;
 871 }
 872 
 873 /**
 874  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 875  * @phba : Pointer to lpfc_hba structure.
 876  * @vport: Pointer to lpfc_vport structure.
 877  * @rpi  : rpi to be release.
 878  *
 879  * This function will send a unreg_login mailbox command to the firmware
 880  * to release a rpi.
 881  **/
 882 static void
 883 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
 884                  struct lpfc_nodelist *ndlp, uint16_t rpi)
 885 {
 886         LPFC_MBOXQ_t *pmb;
 887         int rc;
 888 
 889         /* If there is already an UNREG in progress for this ndlp,
 890          * no need to queue up another one.
 891          */
 892         if (ndlp->nlp_flag & NLP_UNREG_INP) {
 893                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 894                                  "1435 release_rpi SKIP UNREG x%x on "
 895                                  "NPort x%x deferred x%x  flg x%x "
 896                                  "Data: x%px\n",
 897                                  ndlp->nlp_rpi, ndlp->nlp_DID,
 898                                  ndlp->nlp_defer_did,
 899                                  ndlp->nlp_flag, ndlp);
 900                 return;
 901         }
 902 
 903         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 904                         GFP_KERNEL);
 905         if (!pmb)
 906                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 907                         "2796 mailbox memory allocation failed \n");
 908         else {
 909                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 910                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 911                 pmb->vport = vport;
 912                 pmb->ctx_ndlp = ndlp;
 913 
 914                 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
 915                     (!(vport->fc_flag & FC_OFFLINE_MODE)))
 916                         ndlp->nlp_flag |= NLP_UNREG_INP;
 917 
 918                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 919                                  "1437 release_rpi UNREG x%x "
 920                                  "on NPort x%x flg x%x\n",
 921                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
 922 
 923                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 924                 if (rc == MBX_NOT_FINISHED)
 925                         mempool_free(pmb, phba->mbox_mem_pool);
 926         }
 927 }
 928 
 929 static uint32_t
 930 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 931                   void *arg, uint32_t evt)
 932 {
 933         struct lpfc_hba *phba;
 934         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 935         uint16_t rpi;
 936 
 937         phba = vport->phba;
 938         /* Release the RPI if reglogin completing */
 939         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 940                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 941                 (!pmb->u.mb.mbxStatus)) {
 942                 rpi = pmb->u.mb.un.varWords[0];
 943                 lpfc_release_rpi(phba, vport, ndlp, rpi);
 944         }
 945         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 946                          "0271 Illegal State Transition: node x%x "
 947                          "event x%x, state x%x Data: x%x x%x\n",
 948                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 949                          ndlp->nlp_flag);
 950         return ndlp->nlp_state;
 951 }
 952 
 953 static uint32_t
 954 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 955                   void *arg, uint32_t evt)
 956 {
 957         /* This transition is only legal if we previously
 958          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 959          * working on the same NPortID, do nothing for this thread
 960          * to stop it.
 961          */
 962         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 963                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 964                          "0272 Illegal State Transition: node x%x "
 965                          "event x%x, state x%x Data: x%x x%x\n",
 966                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 967                          ndlp->nlp_flag);
 968         }
 969         return ndlp->nlp_state;
 970 }
 971 
 972 /* Start of Discovery State Machine routines */
 973 
 974 static uint32_t
 975 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 976                            void *arg, uint32_t evt)
 977 {
 978         struct lpfc_iocbq *cmdiocb;
 979 
 980         cmdiocb = (struct lpfc_iocbq *) arg;
 981 
 982         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 983                 return ndlp->nlp_state;
 984         }
 985         return NLP_STE_FREED_NODE;
 986 }
 987 
 988 static uint32_t
 989 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 990                          void *arg, uint32_t evt)
 991 {
 992         lpfc_issue_els_logo(vport, ndlp, 0);
 993         return ndlp->nlp_state;
 994 }
 995 
 996 static uint32_t
 997 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 998                           void *arg, uint32_t evt)
 999 {
1000         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1001         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1002 
1003         spin_lock_irq(shost->host_lock);
1004         ndlp->nlp_flag |= NLP_LOGO_ACC;
1005         spin_unlock_irq(shost->host_lock);
1006         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1007 
1008         return ndlp->nlp_state;
1009 }
1010 
1011 static uint32_t
1012 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1013                            void *arg, uint32_t evt)
1014 {
1015         return NLP_STE_FREED_NODE;
1016 }
1017 
1018 static uint32_t
1019 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1020                            void *arg, uint32_t evt)
1021 {
1022         return NLP_STE_FREED_NODE;
1023 }
1024 
1025 static uint32_t
1026 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1027                         struct lpfc_nodelist *ndlp,
1028                            void *arg, uint32_t evt)
1029 {
1030         return ndlp->nlp_state;
1031 }
1032 
1033 static uint32_t
1034 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1035                            void *arg, uint32_t evt)
1036 {
1037         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1038         struct lpfc_hba   *phba = vport->phba;
1039         struct lpfc_iocbq *cmdiocb = arg;
1040         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1041         uint32_t *lp = (uint32_t *) pcmd->virt;
1042         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1043         struct ls_rjt stat;
1044         int port_cmp;
1045 
1046         memset(&stat, 0, sizeof (struct ls_rjt));
1047 
1048         /* For a PLOGI, we only accept if our portname is less
1049          * than the remote portname.
1050          */
1051         phba->fc_stat.elsLogiCol++;
1052         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1053                           sizeof(struct lpfc_name));
1054 
1055         if (port_cmp >= 0) {
1056                 /* Reject this request because the remote node will accept
1057                    ours */
1058                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1059                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1060                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1061                         NULL);
1062         } else {
1063                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1064                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1065                     (vport->num_disc_nodes)) {
1066                         spin_lock_irq(shost->host_lock);
1067                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1068                         spin_unlock_irq(shost->host_lock);
1069                         /* Check if there are more PLOGIs to be sent */
1070                         lpfc_more_plogi(vport);
1071                         if (vport->num_disc_nodes == 0) {
1072                                 spin_lock_irq(shost->host_lock);
1073                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1074                                 spin_unlock_irq(shost->host_lock);
1075                                 lpfc_can_disctmo(vport);
1076                                 lpfc_end_rscn(vport);
1077                         }
1078                 }
1079         } /* If our portname was less */
1080 
1081         return ndlp->nlp_state;
1082 }
1083 
1084 static uint32_t
1085 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1086                           void *arg, uint32_t evt)
1087 {
1088         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1089         struct ls_rjt     stat;
1090 
1091         memset(&stat, 0, sizeof (struct ls_rjt));
1092         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1093         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1094         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1095         return ndlp->nlp_state;
1096 }
1097 
1098 static uint32_t
1099 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1100                           void *arg, uint32_t evt)
1101 {
1102         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1103 
1104         /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1105         if (vport->phba->sli_rev == LPFC_SLI_REV3)
1106                 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1107                                 /* software abort outstanding PLOGI */
1108         lpfc_els_abort(vport->phba, ndlp);
1109 
1110         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1111         return ndlp->nlp_state;
1112 }
1113 
1114 static uint32_t
1115 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1116                          void *arg, uint32_t evt)
1117 {
1118         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1119         struct lpfc_hba   *phba = vport->phba;
1120         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1121 
1122         /* software abort outstanding PLOGI */
1123         lpfc_els_abort(phba, ndlp);
1124 
1125         if (evt == NLP_EVT_RCV_LOGO) {
1126                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1127         } else {
1128                 lpfc_issue_els_logo(vport, ndlp, 0);
1129         }
1130 
1131         /* Put ndlp in npr state set plogi timer for 1 sec */
1132         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1133         spin_lock_irq(shost->host_lock);
1134         ndlp->nlp_flag |= NLP_DELAY_TMO;
1135         spin_unlock_irq(shost->host_lock);
1136         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1137         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1138         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1139 
1140         return ndlp->nlp_state;
1141 }
1142 
1143 static uint32_t
1144 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1145                             struct lpfc_nodelist *ndlp,
1146                             void *arg,
1147                             uint32_t evt)
1148 {
1149         struct lpfc_hba    *phba = vport->phba;
1150         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1151         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1152         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1153         uint32_t *lp;
1154         uint32_t vid, flag;
1155         IOCB_t *irsp;
1156         struct serv_parm *sp;
1157         uint32_t ed_tov;
1158         LPFC_MBOXQ_t *mbox;
1159         int rc;
1160 
1161         cmdiocb = (struct lpfc_iocbq *) arg;
1162         rspiocb = cmdiocb->context_un.rsp_iocb;
1163 
1164         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1165                 /* Recovery from PLOGI collision logic */
1166                 return ndlp->nlp_state;
1167         }
1168 
1169         irsp = &rspiocb->iocb;
1170 
1171         if (irsp->ulpStatus)
1172                 goto out;
1173 
1174         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1175 
1176         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1177         if (!prsp)
1178                 goto out;
1179 
1180         lp = (uint32_t *) prsp->virt;
1181         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1182 
1183         /* Some switches have FDMI servers returning 0 for WWN */
1184         if ((ndlp->nlp_DID != FDMI_DID) &&
1185                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1186                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1187                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1188                                  "0142 PLOGI RSP: Invalid WWN.\n");
1189                 goto out;
1190         }
1191         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1192                 goto out;
1193         /* PLOGI chkparm OK */
1194         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1195                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1196                          ndlp->nlp_DID, ndlp->nlp_state,
1197                          ndlp->nlp_flag, ndlp->nlp_rpi);
1198         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1199                 ndlp->nlp_fcp_info |= CLASS2;
1200         else
1201                 ndlp->nlp_fcp_info |= CLASS3;
1202 
1203         ndlp->nlp_class_sup = 0;
1204         if (sp->cls1.classValid)
1205                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1206         if (sp->cls2.classValid)
1207                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1208         if (sp->cls3.classValid)
1209                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1210         if (sp->cls4.classValid)
1211                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1212         ndlp->nlp_maxframe =
1213                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1214 
1215         if ((vport->fc_flag & FC_PT2PT) &&
1216             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1217                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1218                 if (sp->cmn.edtovResolution) {
1219                         /* E_D_TOV ticks are in nanoseconds */
1220                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1221                 }
1222 
1223                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1224                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1225                     sp->cmn.valid_vendor_ver_level) {
1226                         vid = be32_to_cpu(sp->un.vv.vid);
1227                         flag = be32_to_cpu(sp->un.vv.flags);
1228                         if ((vid == LPFC_VV_EMLX_ID) &&
1229                             (flag & LPFC_VV_SUPPRESS_RSP))
1230                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1231                 }
1232 
1233                 /*
1234                  * Use the larger EDTOV
1235                  * RATOV = 2 * EDTOV for pt-to-pt
1236                  */
1237                 if (ed_tov > phba->fc_edtov)
1238                         phba->fc_edtov = ed_tov;
1239                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1240 
1241                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1242 
1243                 /* Issue config_link / reg_vfi to account for updated TOV's */
1244                 if (phba->sli_rev == LPFC_SLI_REV4) {
1245                         lpfc_issue_reg_vfi(vport);
1246                 } else {
1247                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1248                         if (!mbox) {
1249                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1250                                                  "0133 PLOGI: no memory "
1251                                                  "for config_link "
1252                                                  "Data: x%x x%x x%x x%x\n",
1253                                                  ndlp->nlp_DID, ndlp->nlp_state,
1254                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1255                                 goto out;
1256                         }
1257 
1258                         lpfc_config_link(phba, mbox);
1259 
1260                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1261                         mbox->vport = vport;
1262                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1263                         if (rc == MBX_NOT_FINISHED) {
1264                                 mempool_free(mbox, phba->mbox_mem_pool);
1265                                 goto out;
1266                         }
1267                 }
1268         }
1269 
1270         lpfc_unreg_rpi(vport, ndlp);
1271 
1272         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1273         if (!mbox) {
1274                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1275                                  "0018 PLOGI: no memory for reg_login "
1276                                  "Data: x%x x%x x%x x%x\n",
1277                                  ndlp->nlp_DID, ndlp->nlp_state,
1278                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1279                 goto out;
1280         }
1281 
1282         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1283                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1284                 switch (ndlp->nlp_DID) {
1285                 case NameServer_DID:
1286                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1287                         break;
1288                 case FDMI_DID:
1289                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1290                         break;
1291                 default:
1292                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1293                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1294                 }
1295                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1296                 mbox->vport = vport;
1297                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1298                     != MBX_NOT_FINISHED) {
1299                         lpfc_nlp_set_state(vport, ndlp,
1300                                            NLP_STE_REG_LOGIN_ISSUE);
1301                         return ndlp->nlp_state;
1302                 }
1303                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1304                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1305                 /* decrement node reference count to the failed mbox
1306                  * command
1307                  */
1308                 lpfc_nlp_put(ndlp);
1309                 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1310                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1311                 kfree(mp);
1312                 mempool_free(mbox, phba->mbox_mem_pool);
1313 
1314                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1315                                  "0134 PLOGI: cannot issue reg_login "
1316                                  "Data: x%x x%x x%x x%x\n",
1317                                  ndlp->nlp_DID, ndlp->nlp_state,
1318                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1319         } else {
1320                 mempool_free(mbox, phba->mbox_mem_pool);
1321 
1322                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1323                                  "0135 PLOGI: cannot format reg_login "
1324                                  "Data: x%x x%x x%x x%x\n",
1325                                  ndlp->nlp_DID, ndlp->nlp_state,
1326                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1327         }
1328 
1329 
1330 out:
1331         if (ndlp->nlp_DID == NameServer_DID) {
1332                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1333                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1334                                  "0261 Cannot Register NameServer login\n");
1335         }
1336 
1337         /*
1338         ** In case the node reference counter does not go to zero, ensure that
1339         ** the stale state for the node is not processed.
1340         */
1341 
1342         ndlp->nlp_prev_state = ndlp->nlp_state;
1343         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1344         spin_lock_irq(shost->host_lock);
1345         ndlp->nlp_flag |= NLP_DEFER_RM;
1346         spin_unlock_irq(shost->host_lock);
1347         return NLP_STE_FREED_NODE;
1348 }
1349 
1350 static uint32_t
1351 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1352                            void *arg, uint32_t evt)
1353 {
1354         return ndlp->nlp_state;
1355 }
1356 
1357 static uint32_t
1358 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1359         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1360 {
1361         struct lpfc_hba *phba;
1362         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1363         MAILBOX_t *mb = &pmb->u.mb;
1364         uint16_t rpi;
1365 
1366         phba = vport->phba;
1367         /* Release the RPI */
1368         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1369                 !mb->mbxStatus) {
1370                 rpi = pmb->u.mb.un.varWords[0];
1371                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1372         }
1373         return ndlp->nlp_state;
1374 }
1375 
1376 static uint32_t
1377 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1378                            void *arg, uint32_t evt)
1379 {
1380         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1381 
1382         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1383                 spin_lock_irq(shost->host_lock);
1384                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1385                 spin_unlock_irq(shost->host_lock);
1386                 return ndlp->nlp_state;
1387         } else {
1388                 /* software abort outstanding PLOGI */
1389                 lpfc_els_abort(vport->phba, ndlp);
1390 
1391                 lpfc_drop_node(vport, ndlp);
1392                 return NLP_STE_FREED_NODE;
1393         }
1394 }
1395 
1396 static uint32_t
1397 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1398                               struct lpfc_nodelist *ndlp,
1399                               void *arg,
1400                               uint32_t evt)
1401 {
1402         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1403         struct lpfc_hba  *phba = vport->phba;
1404 
1405         /* Don't do anything that will mess up processing of the
1406          * previous RSCN.
1407          */
1408         if (vport->fc_flag & FC_RSCN_DEFERRED)
1409                 return ndlp->nlp_state;
1410 
1411         /* software abort outstanding PLOGI */
1412         lpfc_els_abort(phba, ndlp);
1413 
1414         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1415         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1416         spin_lock_irq(shost->host_lock);
1417         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1418         spin_unlock_irq(shost->host_lock);
1419 
1420         return ndlp->nlp_state;
1421 }
1422 
1423 static uint32_t
1424 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1425                            void *arg, uint32_t evt)
1426 {
1427         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1428         struct lpfc_hba   *phba = vport->phba;
1429         struct lpfc_iocbq *cmdiocb;
1430 
1431         /* software abort outstanding ADISC */
1432         lpfc_els_abort(phba, ndlp);
1433 
1434         cmdiocb = (struct lpfc_iocbq *) arg;
1435 
1436         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1437                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1438                         spin_lock_irq(shost->host_lock);
1439                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1440                         spin_unlock_irq(shost->host_lock);
1441                         if (vport->num_disc_nodes)
1442                                 lpfc_more_adisc(vport);
1443                 }
1444                 return ndlp->nlp_state;
1445         }
1446         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1447         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1448         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1449 
1450         return ndlp->nlp_state;
1451 }
1452 
1453 static uint32_t
1454 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1455                           void *arg, uint32_t evt)
1456 {
1457         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1458 
1459         if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1460                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1461         return ndlp->nlp_state;
1462 }
1463 
1464 static uint32_t
1465 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1466                           void *arg, uint32_t evt)
1467 {
1468         struct lpfc_hba *phba = vport->phba;
1469         struct lpfc_iocbq *cmdiocb;
1470 
1471         cmdiocb = (struct lpfc_iocbq *) arg;
1472 
1473         /* software abort outstanding ADISC */
1474         lpfc_els_abort(phba, ndlp);
1475 
1476         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1477         return ndlp->nlp_state;
1478 }
1479 
1480 static uint32_t
1481 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1482                             struct lpfc_nodelist *ndlp,
1483                             void *arg, uint32_t evt)
1484 {
1485         struct lpfc_iocbq *cmdiocb;
1486 
1487         cmdiocb = (struct lpfc_iocbq *) arg;
1488 
1489         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1490         return ndlp->nlp_state;
1491 }
1492 
1493 static uint32_t
1494 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1495                           void *arg, uint32_t evt)
1496 {
1497         struct lpfc_iocbq *cmdiocb;
1498 
1499         cmdiocb = (struct lpfc_iocbq *) arg;
1500 
1501         /* Treat like rcv logo */
1502         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1503         return ndlp->nlp_state;
1504 }
1505 
1506 static uint32_t
1507 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1508                             struct lpfc_nodelist *ndlp,
1509                             void *arg, uint32_t evt)
1510 {
1511         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1512         struct lpfc_hba   *phba = vport->phba;
1513         struct lpfc_iocbq *cmdiocb, *rspiocb;
1514         IOCB_t *irsp;
1515         ADISC *ap;
1516         int rc;
1517 
1518         cmdiocb = (struct lpfc_iocbq *) arg;
1519         rspiocb = cmdiocb->context_un.rsp_iocb;
1520 
1521         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1522         irsp = &rspiocb->iocb;
1523 
1524         if ((irsp->ulpStatus) ||
1525             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1526                 /* 1 sec timeout */
1527                 mod_timer(&ndlp->nlp_delayfunc,
1528                           jiffies + msecs_to_jiffies(1000));
1529                 spin_lock_irq(shost->host_lock);
1530                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1531                 spin_unlock_irq(shost->host_lock);
1532                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1533 
1534                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1535                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1536 
1537                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1538                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1539                 lpfc_unreg_rpi(vport, ndlp);
1540                 return ndlp->nlp_state;
1541         }
1542 
1543         if (phba->sli_rev == LPFC_SLI_REV4) {
1544                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1545                 if (rc) {
1546                         /* Stay in state and retry. */
1547                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1548                         return ndlp->nlp_state;
1549                 }
1550         }
1551 
1552         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1553                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1554                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1555         } else {
1556                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1557                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1558         }
1559 
1560         return ndlp->nlp_state;
1561 }
1562 
1563 static uint32_t
1564 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1565                            void *arg, uint32_t evt)
1566 {
1567         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568 
1569         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1570                 spin_lock_irq(shost->host_lock);
1571                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1572                 spin_unlock_irq(shost->host_lock);
1573                 return ndlp->nlp_state;
1574         } else {
1575                 /* software abort outstanding ADISC */
1576                 lpfc_els_abort(vport->phba, ndlp);
1577 
1578                 lpfc_drop_node(vport, ndlp);
1579                 return NLP_STE_FREED_NODE;
1580         }
1581 }
1582 
1583 static uint32_t
1584 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1585                               struct lpfc_nodelist *ndlp,
1586                               void *arg,
1587                               uint32_t evt)
1588 {
1589         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1590         struct lpfc_hba  *phba = vport->phba;
1591 
1592         /* Don't do anything that will mess up processing of the
1593          * previous RSCN.
1594          */
1595         if (vport->fc_flag & FC_RSCN_DEFERRED)
1596                 return ndlp->nlp_state;
1597 
1598         /* software abort outstanding ADISC */
1599         lpfc_els_abort(phba, ndlp);
1600 
1601         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1602         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1603         spin_lock_irq(shost->host_lock);
1604         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1605         spin_unlock_irq(shost->host_lock);
1606         lpfc_disc_set_adisc(vport, ndlp);
1607         return ndlp->nlp_state;
1608 }
1609 
1610 static uint32_t
1611 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1612                               struct lpfc_nodelist *ndlp,
1613                               void *arg,
1614                               uint32_t evt)
1615 {
1616         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1617 
1618         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1619         return ndlp->nlp_state;
1620 }
1621 
1622 static uint32_t
1623 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1624                              struct lpfc_nodelist *ndlp,
1625                              void *arg,
1626                              uint32_t evt)
1627 {
1628         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1629         struct ls_rjt     stat;
1630 
1631         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1632                 return ndlp->nlp_state;
1633         }
1634         if (vport->phba->nvmet_support) {
1635                 /* NVME Target mode.  Handle and respond to the PRLI and
1636                  * transition to UNMAPPED provided the RPI has completed
1637                  * registration.
1638                  */
1639                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1640                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1641                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1642                 } else {
1643                         /* RPI registration has not completed. Reject the PRLI
1644                          * to prevent an illegal state transition when the
1645                          * rpi registration does complete.
1646                          */
1647                         memset(&stat, 0, sizeof(struct ls_rjt));
1648                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1649                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1650                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1651                                             ndlp, NULL);
1652                         return ndlp->nlp_state;
1653                 }
1654         } else {
1655                 /* Initiator mode. */
1656                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1657         }
1658         return ndlp->nlp_state;
1659 }
1660 
1661 static uint32_t
1662 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1663                              struct lpfc_nodelist *ndlp,
1664                              void *arg,
1665                              uint32_t evt)
1666 {
1667         struct lpfc_hba   *phba = vport->phba;
1668         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1669         LPFC_MBOXQ_t      *mb;
1670         LPFC_MBOXQ_t      *nextmb;
1671         struct lpfc_dmabuf *mp;
1672         struct lpfc_nodelist *ns_ndlp;
1673 
1674         cmdiocb = (struct lpfc_iocbq *) arg;
1675 
1676         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1677         if ((mb = phba->sli.mbox_active)) {
1678                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1679                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1680                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1681                         lpfc_nlp_put(ndlp);
1682                         mb->ctx_ndlp = NULL;
1683                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1684                 }
1685         }
1686 
1687         spin_lock_irq(&phba->hbalock);
1688         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1689                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1690                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1691                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1692                         if (mp) {
1693                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1694                                 kfree(mp);
1695                         }
1696                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1697                         lpfc_nlp_put(ndlp);
1698                         list_del(&mb->list);
1699                         phba->sli.mboxq_cnt--;
1700                         mempool_free(mb, phba->mbox_mem_pool);
1701                 }
1702         }
1703         spin_unlock_irq(&phba->hbalock);
1704 
1705         /* software abort if any GID_FT is outstanding */
1706         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1707                 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1708                 if (ns_ndlp && NLP_CHK_NODE_ACT(ns_ndlp))
1709                         lpfc_els_abort(phba, ns_ndlp);
1710         }
1711 
1712         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1713         return ndlp->nlp_state;
1714 }
1715 
1716 static uint32_t
1717 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1718                                struct lpfc_nodelist *ndlp,
1719                                void *arg,
1720                                uint32_t evt)
1721 {
1722         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1723 
1724         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1725         return ndlp->nlp_state;
1726 }
1727 
1728 static uint32_t
1729 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1730                              struct lpfc_nodelist *ndlp,
1731                              void *arg,
1732                              uint32_t evt)
1733 {
1734         struct lpfc_iocbq *cmdiocb;
1735 
1736         cmdiocb = (struct lpfc_iocbq *) arg;
1737         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1738         return ndlp->nlp_state;
1739 }
1740 
1741 static uint32_t
1742 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1743                                   struct lpfc_nodelist *ndlp,
1744                                   void *arg,
1745                                   uint32_t evt)
1746 {
1747         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1748         struct lpfc_hba *phba = vport->phba;
1749         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1750         MAILBOX_t *mb = &pmb->u.mb;
1751         uint32_t did  = mb->un.varWords[1];
1752 
1753         if (mb->mbxStatus) {
1754                 /* RegLogin failed */
1755                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1756                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1757                                  "x%x\n",
1758                                  did, mb->mbxStatus, vport->port_state,
1759                                  mb->un.varRegLogin.vpi,
1760                                  mb->un.varRegLogin.rpi);
1761                 /*
1762                  * If RegLogin failed due to lack of HBA resources do not
1763                  * retry discovery.
1764                  */
1765                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1766                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1767                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1768                         return ndlp->nlp_state;
1769                 }
1770 
1771                 /* Put ndlp in npr state set plogi timer for 1 sec */
1772                 mod_timer(&ndlp->nlp_delayfunc,
1773                           jiffies + msecs_to_jiffies(1000 * 1));
1774                 spin_lock_irq(shost->host_lock);
1775                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1776                 spin_unlock_irq(shost->host_lock);
1777                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1778 
1779                 lpfc_issue_els_logo(vport, ndlp, 0);
1780                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1781                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1782                 return ndlp->nlp_state;
1783         }
1784 
1785         /* SLI4 ports have preallocated logical rpis. */
1786         if (phba->sli_rev < LPFC_SLI_REV4)
1787                 ndlp->nlp_rpi = mb->un.varWords[0];
1788 
1789         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1790 
1791         /* Only if we are not a fabric nport do we issue PRLI */
1792         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1793                          "3066 RegLogin Complete on x%x x%x x%x\n",
1794                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1795         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1796             (phba->nvmet_support == 0)) {
1797                 /* The driver supports FCP and NVME concurrently.  If the
1798                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1799                  * know what PRLI to send yet.  Figure that out now and
1800                  * call PRLI depending on the outcome.
1801                  */
1802                 if (vport->fc_flag & FC_PT2PT) {
1803                         /* If we are pt2pt, there is no Fabric to determine
1804                          * the FC4 type of the remote nport. So if NVME
1805                          * is configured try it.
1806                          */
1807                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1808                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1809                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1810                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1811                                 /* We need to update the localport also */
1812                                 lpfc_nvme_update_localport(vport);
1813                         }
1814 
1815                 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1816                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1817 
1818                 } else if (ndlp->nlp_fc4_type == 0) {
1819                         /* If we are only configured for FCP, the driver
1820                          * should just issue PRLI for FCP. Otherwise issue
1821                          * GFT_ID to determine if remote port supports NVME.
1822                          */
1823                         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1824                                 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
1825                                             ndlp->nlp_DID);
1826                                 return ndlp->nlp_state;
1827                         }
1828                         ndlp->nlp_fc4_type = NLP_FC4_FCP;
1829                 }
1830 
1831                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1832                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1833                 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
1834                         lpfc_issue_els_logo(vport, ndlp, 0);
1835                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1836                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1837                 }
1838         } else {
1839                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1840                         phba->targetport->port_id = vport->fc_myDID;
1841 
1842                 /* Only Fabric ports should transition. NVME target
1843                  * must complete PRLI.
1844                  */
1845                 if (ndlp->nlp_type & NLP_FABRIC) {
1846                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1847                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1848                 }
1849         }
1850         return ndlp->nlp_state;
1851 }
1852 
1853 static uint32_t
1854 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1855                               struct lpfc_nodelist *ndlp,
1856                               void *arg,
1857                               uint32_t evt)
1858 {
1859         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1860 
1861         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1862                 spin_lock_irq(shost->host_lock);
1863                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1864                 spin_unlock_irq(shost->host_lock);
1865                 return ndlp->nlp_state;
1866         } else {
1867                 lpfc_drop_node(vport, ndlp);
1868                 return NLP_STE_FREED_NODE;
1869         }
1870 }
1871 
1872 static uint32_t
1873 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1874                                  struct lpfc_nodelist *ndlp,
1875                                  void *arg,
1876                                  uint32_t evt)
1877 {
1878         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1879 
1880         /* Don't do anything that will mess up processing of the
1881          * previous RSCN.
1882          */
1883         if (vport->fc_flag & FC_RSCN_DEFERRED)
1884                 return ndlp->nlp_state;
1885 
1886         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1887         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1888         spin_lock_irq(shost->host_lock);
1889 
1890         /* If we are a target we won't immediately transition into PRLI,
1891          * so if REG_LOGIN already completed we don't need to ignore it.
1892          */
1893         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1894             !vport->phba->nvmet_support)
1895                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1896 
1897         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1898         spin_unlock_irq(shost->host_lock);
1899         lpfc_disc_set_adisc(vport, ndlp);
1900         return ndlp->nlp_state;
1901 }
1902 
1903 static uint32_t
1904 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1905                           void *arg, uint32_t evt)
1906 {
1907         struct lpfc_iocbq *cmdiocb;
1908 
1909         cmdiocb = (struct lpfc_iocbq *) arg;
1910 
1911         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1912         return ndlp->nlp_state;
1913 }
1914 
1915 static uint32_t
1916 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1917                          void *arg, uint32_t evt)
1918 {
1919         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1920 
1921         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1922                 return ndlp->nlp_state;
1923         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1924         return ndlp->nlp_state;
1925 }
1926 
1927 static uint32_t
1928 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1929                          void *arg, uint32_t evt)
1930 {
1931         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1932 
1933         /* Software abort outstanding PRLI before sending acc */
1934         lpfc_els_abort(vport->phba, ndlp);
1935 
1936         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1937         return ndlp->nlp_state;
1938 }
1939 
1940 static uint32_t
1941 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1942                            void *arg, uint32_t evt)
1943 {
1944         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1945 
1946         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1947         return ndlp->nlp_state;
1948 }
1949 
1950 /* This routine is envoked when we rcv a PRLO request from a nport
1951  * we are logged into.  We should send back a PRLO rsp setting the
1952  * appropriate bits.
1953  * NEXT STATE = PRLI_ISSUE
1954  */
1955 static uint32_t
1956 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1957                          void *arg, uint32_t evt)
1958 {
1959         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1960 
1961         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1962         return ndlp->nlp_state;
1963 }
1964 
1965 static uint32_t
1966 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1967                           void *arg, uint32_t evt)
1968 {
1969         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1970         struct lpfc_iocbq *cmdiocb, *rspiocb;
1971         struct lpfc_hba   *phba = vport->phba;
1972         IOCB_t *irsp;
1973         PRLI *npr;
1974         struct lpfc_nvme_prli *nvpr;
1975         void *temp_ptr;
1976 
1977         cmdiocb = (struct lpfc_iocbq *) arg;
1978         rspiocb = cmdiocb->context_un.rsp_iocb;
1979 
1980         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
1981          * format is different so NULL the two PRLI types so that the
1982          * driver correctly gets the correct context.
1983          */
1984         npr = NULL;
1985         nvpr = NULL;
1986         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1987         if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1988                 npr = (PRLI *) temp_ptr;
1989         else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1990                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1991 
1992         irsp = &rspiocb->iocb;
1993         if (irsp->ulpStatus) {
1994                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1995                     vport->cfg_restrict_login) {
1996                         goto out;
1997                 }
1998 
1999                 /* Adjust the nlp_type accordingly if the PRLI failed */
2000                 if (npr)
2001                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2002                 if (nvpr)
2003                         ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2004 
2005                 /* We can't set the DSM state till BOTH PRLIs complete */
2006                 goto out_err;
2007         }
2008 
2009         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2010             (npr->prliType == PRLI_FCP_TYPE)) {
2011                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2012                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2013                                  npr->initiatorFunc,
2014                                  npr->targetFunc);
2015                 if (npr->initiatorFunc)
2016                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
2017                 if (npr->targetFunc) {
2018                         ndlp->nlp_type |= NLP_FCP_TARGET;
2019                         if (npr->writeXferRdyDis)
2020                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2021                 }
2022                 if (npr->Retry)
2023                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2024 
2025         } else if (nvpr &&
2026                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2027                     PRLI_REQ_EXECUTED) &&
2028                    (bf_get_be32(prli_type_code, nvpr) ==
2029                     PRLI_NVME_TYPE)) {
2030 
2031                 /* Complete setting up the remote ndlp personality. */
2032                 if (bf_get_be32(prli_init, nvpr))
2033                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
2034 
2035                 if (phba->nsler && bf_get_be32(prli_nsler, nvpr))
2036                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2037                 else
2038                         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2039 
2040                 /* Target driver cannot solicit NVME FB. */
2041                 if (bf_get_be32(prli_tgt, nvpr)) {
2042                         /* Complete the nvme target roles.  The transport
2043                          * needs to know if the rport is capable of
2044                          * discovery in addition to its role.
2045                          */
2046                         ndlp->nlp_type |= NLP_NVME_TARGET;
2047                         if (bf_get_be32(prli_disc, nvpr))
2048                                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2049 
2050                         /*
2051                          * If prli_fba is set, the Target supports FirstBurst.
2052                          * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2053                          * otherwise it defines the actual size supported by
2054                          * the NVME Target.
2055                          */
2056                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2057                             (phba->cfg_nvme_enable_fb) &&
2058                             (!phba->nvmet_support)) {
2059                                 /* Both sides support FB. The target's first
2060                                  * burst size is a 512 byte encoded value.
2061                                  */
2062                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2063                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2064                                                                  nvpr);
2065 
2066                                 /* Expressed in units of 512 bytes */
2067                                 if (ndlp->nvme_fb_size)
2068                                         ndlp->nvme_fb_size <<=
2069                                                 LPFC_NVME_FB_SHIFT;
2070                                 else
2071                                         ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2072                         }
2073                 }
2074 
2075                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2076                                  "6029 NVME PRLI Cmpl w1 x%08x "
2077                                  "w4 x%08x w5 x%08x flag x%x, "
2078                                  "fcp_info x%x nlp_type x%x\n",
2079                                  be32_to_cpu(nvpr->word1),
2080                                  be32_to_cpu(nvpr->word4),
2081                                  be32_to_cpu(nvpr->word5),
2082                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
2083                                  ndlp->nlp_type);
2084         }
2085         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2086             (vport->port_type == LPFC_NPIV_PORT) &&
2087              vport->cfg_restrict_login) {
2088 out:
2089                 spin_lock_irq(shost->host_lock);
2090                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2091                 spin_unlock_irq(shost->host_lock);
2092                 lpfc_issue_els_logo(vport, ndlp, 0);
2093 
2094                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2095                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2096                 return ndlp->nlp_state;
2097         }
2098 
2099 out_err:
2100         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2101          * are complete.
2102          */
2103         if (ndlp->fc4_prli_sent == 0) {
2104                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2105                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2106                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2107                 else if (ndlp->nlp_type &
2108                          (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2109                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2110         } else
2111                 lpfc_printf_vlog(vport,
2112                                  KERN_INFO, LOG_ELS,
2113                                  "3067 PRLI's still outstanding "
2114                                  "on x%06x - count %d, Pend Node Mode "
2115                                  "transition...\n",
2116                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2117 
2118         return ndlp->nlp_state;
2119 }
2120 
2121 /*! lpfc_device_rm_prli_issue
2122  *
2123  * \pre
2124  * \post
2125  * \param   phba
2126  * \param   ndlp
2127  * \param   arg
2128  * \param   evt
2129  * \return  uint32_t
2130  *
2131  * \b Description:
2132  *    This routine is envoked when we a request to remove a nport we are in the
2133  *    process of PRLIing. We should software abort outstanding prli, unreg
2134  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2135  *    on plogi list so it can be freed when LOGO completes.
2136  *
2137  */
2138 
2139 static uint32_t
2140 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2141                           void *arg, uint32_t evt)
2142 {
2143         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2144 
2145         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2146                 spin_lock_irq(shost->host_lock);
2147                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2148                 spin_unlock_irq(shost->host_lock);
2149                 return ndlp->nlp_state;
2150         } else {
2151                 /* software abort outstanding PLOGI */
2152                 lpfc_els_abort(vport->phba, ndlp);
2153 
2154                 lpfc_drop_node(vport, ndlp);
2155                 return NLP_STE_FREED_NODE;
2156         }
2157 }
2158 
2159 
2160 /*! lpfc_device_recov_prli_issue
2161  *
2162  * \pre
2163  * \post
2164  * \param   phba
2165  * \param   ndlp
2166  * \param   arg
2167  * \param   evt
2168  * \return  uint32_t
2169  *
2170  * \b Description:
2171  *    The routine is envoked when the state of a device is unknown, like
2172  *    during a link down. We should remove the nodelist entry from the
2173  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2174  *    outstanding PRLI command, then free the node entry.
2175  */
2176 static uint32_t
2177 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2178                              struct lpfc_nodelist *ndlp,
2179                              void *arg,
2180                              uint32_t evt)
2181 {
2182         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2183         struct lpfc_hba  *phba = vport->phba;
2184 
2185         /* Don't do anything that will mess up processing of the
2186          * previous RSCN.
2187          */
2188         if (vport->fc_flag & FC_RSCN_DEFERRED)
2189                 return ndlp->nlp_state;
2190 
2191         /* software abort outstanding PRLI */
2192         lpfc_els_abort(phba, ndlp);
2193 
2194         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2195         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2196         spin_lock_irq(shost->host_lock);
2197         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2198         spin_unlock_irq(shost->host_lock);
2199         lpfc_disc_set_adisc(vport, ndlp);
2200         return ndlp->nlp_state;
2201 }
2202 
2203 static uint32_t
2204 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2205                           void *arg, uint32_t evt)
2206 {
2207         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2208         struct ls_rjt     stat;
2209 
2210         memset(&stat, 0, sizeof(struct ls_rjt));
2211         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2212         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2213         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2214         return ndlp->nlp_state;
2215 }
2216 
2217 static uint32_t
2218 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2219                          void *arg, uint32_t evt)
2220 {
2221         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2222         struct ls_rjt     stat;
2223 
2224         memset(&stat, 0, sizeof(struct ls_rjt));
2225         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2226         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2227         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2228         return ndlp->nlp_state;
2229 }
2230 
2231 static uint32_t
2232 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2233                          void *arg, uint32_t evt)
2234 {
2235         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2236         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2237 
2238         spin_lock_irq(shost->host_lock);
2239         ndlp->nlp_flag |= NLP_LOGO_ACC;
2240         spin_unlock_irq(shost->host_lock);
2241         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2242         return ndlp->nlp_state;
2243 }
2244 
2245 static uint32_t
2246 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2247                            void *arg, uint32_t evt)
2248 {
2249         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2250         struct ls_rjt     stat;
2251 
2252         memset(&stat, 0, sizeof(struct ls_rjt));
2253         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2254         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2255         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2256         return ndlp->nlp_state;
2257 }
2258 
2259 static uint32_t
2260 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2261                          void *arg, uint32_t evt)
2262 {
2263         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2264         struct ls_rjt     stat;
2265 
2266         memset(&stat, 0, sizeof(struct ls_rjt));
2267         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2268         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2269         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2270         return ndlp->nlp_state;
2271 }
2272 
2273 static uint32_t
2274 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2275                           void *arg, uint32_t evt)
2276 {
2277         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2278 
2279         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2280         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2281         spin_lock_irq(shost->host_lock);
2282         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2283         spin_unlock_irq(shost->host_lock);
2284         lpfc_disc_set_adisc(vport, ndlp);
2285         return ndlp->nlp_state;
2286 }
2287 
2288 static uint32_t
2289 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2290                           void *arg, uint32_t evt)
2291 {
2292         /*
2293          * DevLoss has timed out and is calling for Device Remove.
2294          * In this case, abort the LOGO and cleanup the ndlp
2295          */
2296 
2297         lpfc_unreg_rpi(vport, ndlp);
2298         /* software abort outstanding PLOGI */
2299         lpfc_els_abort(vport->phba, ndlp);
2300         lpfc_drop_node(vport, ndlp);
2301         return NLP_STE_FREED_NODE;
2302 }
2303 
2304 static uint32_t
2305 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2306                              struct lpfc_nodelist *ndlp,
2307                              void *arg, uint32_t evt)
2308 {
2309         /*
2310          * Device Recovery events have no meaning for a node with a LOGO
2311          * outstanding.  The LOGO has to complete first and handle the
2312          * node from that point.
2313          */
2314         return ndlp->nlp_state;
2315 }
2316 
2317 static uint32_t
2318 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2319                           void *arg, uint32_t evt)
2320 {
2321         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2322 
2323         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2324         return ndlp->nlp_state;
2325 }
2326 
2327 static uint32_t
2328 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2329                          void *arg, uint32_t evt)
2330 {
2331         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2332 
2333         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2334                 return ndlp->nlp_state;
2335 
2336         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2337         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2338         return ndlp->nlp_state;
2339 }
2340 
2341 static uint32_t
2342 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2343                          void *arg, uint32_t evt)
2344 {
2345         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2346 
2347         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2348         return ndlp->nlp_state;
2349 }
2350 
2351 static uint32_t
2352 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2353                            void *arg, uint32_t evt)
2354 {
2355         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2356 
2357         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2358         return ndlp->nlp_state;
2359 }
2360 
2361 static uint32_t
2362 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2363                          void *arg, uint32_t evt)
2364 {
2365         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2366 
2367         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2368         return ndlp->nlp_state;
2369 }
2370 
2371 static uint32_t
2372 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2373                              struct lpfc_nodelist *ndlp,
2374                              void *arg,
2375                              uint32_t evt)
2376 {
2377         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2378 
2379         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2380         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2381         spin_lock_irq(shost->host_lock);
2382         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2383         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2384         spin_unlock_irq(shost->host_lock);
2385         lpfc_disc_set_adisc(vport, ndlp);
2386 
2387         return ndlp->nlp_state;
2388 }
2389 
2390 static uint32_t
2391 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2392                            void *arg, uint32_t evt)
2393 {
2394         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2395 
2396         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2397         return ndlp->nlp_state;
2398 }
2399 
2400 static uint32_t
2401 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2402                           void *arg, uint32_t evt)
2403 {
2404         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2405 
2406         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2407                 return ndlp->nlp_state;
2408         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2409         return ndlp->nlp_state;
2410 }
2411 
2412 static uint32_t
2413 lpfc_rcv_logo_mapped_node(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 
2418         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2419         return ndlp->nlp_state;
2420 }
2421 
2422 static uint32_t
2423 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2424                             struct lpfc_nodelist *ndlp,
2425                             void *arg, uint32_t evt)
2426 {
2427         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2428 
2429         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2430         return ndlp->nlp_state;
2431 }
2432 
2433 static uint32_t
2434 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2435                           void *arg, uint32_t evt)
2436 {
2437         struct lpfc_hba  *phba = vport->phba;
2438         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2439 
2440         /* flush the target */
2441         lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2442                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2443 
2444         /* Treat like rcv logo */
2445         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2446         return ndlp->nlp_state;
2447 }
2448 
2449 static uint32_t
2450 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2451                               struct lpfc_nodelist *ndlp,
2452                               void *arg,
2453                               uint32_t evt)
2454 {
2455         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2456 
2457         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2458         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2459         spin_lock_irq(shost->host_lock);
2460         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2461         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2462         spin_unlock_irq(shost->host_lock);
2463         lpfc_disc_set_adisc(vport, ndlp);
2464         return ndlp->nlp_state;
2465 }
2466 
2467 static uint32_t
2468 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2469                         void *arg, uint32_t evt)
2470 {
2471         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2472         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2473 
2474         /* Ignore PLOGI if we have an outstanding LOGO */
2475         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2476                 return ndlp->nlp_state;
2477         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2478                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2479                 spin_lock_irq(shost->host_lock);
2480                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2481                 spin_unlock_irq(shost->host_lock);
2482         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2483                 /* send PLOGI immediately, move to PLOGI issue state */
2484                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2485                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2486                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2487                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2488                 }
2489         }
2490         return ndlp->nlp_state;
2491 }
2492 
2493 static uint32_t
2494 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2495                        void *arg, uint32_t evt)
2496 {
2497         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2498         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2499         struct ls_rjt     stat;
2500 
2501         memset(&stat, 0, sizeof (struct ls_rjt));
2502         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2503         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2504         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2505 
2506         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2507                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2508                         spin_lock_irq(shost->host_lock);
2509                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2510                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2511                         spin_unlock_irq(shost->host_lock);
2512                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2513                         lpfc_issue_els_adisc(vport, ndlp, 0);
2514                 } else {
2515                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2516                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2517                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2518                 }
2519         }
2520         return ndlp->nlp_state;
2521 }
2522 
2523 static uint32_t
2524 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2525                        void *arg, uint32_t evt)
2526 {
2527         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2528 
2529         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2530         return ndlp->nlp_state;
2531 }
2532 
2533 static uint32_t
2534 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2535                          void *arg, uint32_t evt)
2536 {
2537         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2538 
2539         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2540         /*
2541          * Do not start discovery if discovery is about to start
2542          * or discovery in progress for this node. Starting discovery
2543          * here will affect the counting of discovery threads.
2544          */
2545         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2546             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2547                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2548                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2549                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2550                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2551                         lpfc_issue_els_adisc(vport, ndlp, 0);
2552                 } else {
2553                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2554                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2555                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2556                 }
2557         }
2558         return ndlp->nlp_state;
2559 }
2560 
2561 static uint32_t
2562 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2563                        void *arg, uint32_t evt)
2564 {
2565         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2566         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2567 
2568         spin_lock_irq(shost->host_lock);
2569         ndlp->nlp_flag |= NLP_LOGO_ACC;
2570         spin_unlock_irq(shost->host_lock);
2571 
2572         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2573 
2574         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2575                 mod_timer(&ndlp->nlp_delayfunc,
2576                           jiffies + msecs_to_jiffies(1000 * 1));
2577                 spin_lock_irq(shost->host_lock);
2578                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2579                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2580                 spin_unlock_irq(shost->host_lock);
2581                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2582         } else {
2583                 spin_lock_irq(shost->host_lock);
2584                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2585                 spin_unlock_irq(shost->host_lock);
2586         }
2587         return ndlp->nlp_state;
2588 }
2589 
2590 static uint32_t
2591 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2592                          void *arg, uint32_t evt)
2593 {
2594         struct lpfc_iocbq *cmdiocb, *rspiocb;
2595         IOCB_t *irsp;
2596         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2597 
2598         cmdiocb = (struct lpfc_iocbq *) arg;
2599         rspiocb = cmdiocb->context_un.rsp_iocb;
2600 
2601         irsp = &rspiocb->iocb;
2602         if (irsp->ulpStatus) {
2603                 spin_lock_irq(shost->host_lock);
2604                 ndlp->nlp_flag |= NLP_DEFER_RM;
2605                 spin_unlock_irq(shost->host_lock);
2606                 return NLP_STE_FREED_NODE;
2607         }
2608         return ndlp->nlp_state;
2609 }
2610 
2611 static uint32_t
2612 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2613                         void *arg, uint32_t evt)
2614 {
2615         struct lpfc_iocbq *cmdiocb, *rspiocb;
2616         IOCB_t *irsp;
2617 
2618         cmdiocb = (struct lpfc_iocbq *) arg;
2619         rspiocb = cmdiocb->context_un.rsp_iocb;
2620 
2621         irsp = &rspiocb->iocb;
2622         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2623                 lpfc_drop_node(vport, ndlp);
2624                 return NLP_STE_FREED_NODE;
2625         }
2626         return ndlp->nlp_state;
2627 }
2628 
2629 static uint32_t
2630 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2631                         void *arg, uint32_t evt)
2632 {
2633         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2634 
2635         /* For the fabric port just clear the fc flags. */
2636         if (ndlp->nlp_DID == Fabric_DID) {
2637                 spin_lock_irq(shost->host_lock);
2638                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2639                 spin_unlock_irq(shost->host_lock);
2640         }
2641         lpfc_unreg_rpi(vport, ndlp);
2642         return ndlp->nlp_state;
2643 }
2644 
2645 static uint32_t
2646 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2647                          void *arg, uint32_t evt)
2648 {
2649         struct lpfc_iocbq *cmdiocb, *rspiocb;
2650         IOCB_t *irsp;
2651 
2652         cmdiocb = (struct lpfc_iocbq *) arg;
2653         rspiocb = cmdiocb->context_un.rsp_iocb;
2654 
2655         irsp = &rspiocb->iocb;
2656         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2657                 lpfc_drop_node(vport, ndlp);
2658                 return NLP_STE_FREED_NODE;
2659         }
2660         return ndlp->nlp_state;
2661 }
2662 
2663 static uint32_t
2664 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2665                             struct lpfc_nodelist *ndlp,
2666                             void *arg, uint32_t evt)
2667 {
2668         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2669         MAILBOX_t    *mb = &pmb->u.mb;
2670 
2671         if (!mb->mbxStatus) {
2672                 /* SLI4 ports have preallocated logical rpis. */
2673                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2674                         ndlp->nlp_rpi = mb->un.varWords[0];
2675                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2676                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2677                         lpfc_unreg_rpi(vport, ndlp);
2678                 }
2679         } else {
2680                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2681                         lpfc_drop_node(vport, ndlp);
2682                         return NLP_STE_FREED_NODE;
2683                 }
2684         }
2685         return ndlp->nlp_state;
2686 }
2687 
2688 static uint32_t
2689 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2690                         void *arg, uint32_t evt)
2691 {
2692         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2693 
2694         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2695                 spin_lock_irq(shost->host_lock);
2696                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2697                 spin_unlock_irq(shost->host_lock);
2698                 return ndlp->nlp_state;
2699         }
2700         lpfc_drop_node(vport, ndlp);
2701         return NLP_STE_FREED_NODE;
2702 }
2703 
2704 static uint32_t
2705 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2706                            void *arg, uint32_t evt)
2707 {
2708         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2709 
2710         /* Don't do anything that will mess up processing of the
2711          * previous RSCN.
2712          */
2713         if (vport->fc_flag & FC_RSCN_DEFERRED)
2714                 return ndlp->nlp_state;
2715 
2716         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2717         spin_lock_irq(shost->host_lock);
2718         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2719         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2720         spin_unlock_irq(shost->host_lock);
2721         return ndlp->nlp_state;
2722 }
2723 
2724 
2725 /* This next section defines the NPort Discovery State Machine */
2726 
2727 /* There are 4 different double linked lists nodelist entries can reside on.
2728  * The plogi list and adisc list are used when Link Up discovery or RSCN
2729  * processing is needed. Each list holds the nodes that we will send PLOGI
2730  * or ADISC on. These lists will keep track of what nodes will be effected
2731  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2732  * The unmapped_list will contain all nodes that we have successfully logged
2733  * into at the Fibre Channel level. The mapped_list will contain all nodes
2734  * that are mapped FCP targets.
2735  */
2736 /*
2737  * The bind list is a list of undiscovered (potentially non-existent) nodes
2738  * that we have saved binding information on. This information is used when
2739  * nodes transition from the unmapped to the mapped list.
2740  */
2741 /* For UNUSED_NODE state, the node has just been allocated .
2742  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2743  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2744  * and put on the unmapped list. For ADISC processing, the node is taken off
2745  * the ADISC list and placed on either the mapped or unmapped list (depending
2746  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2747  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2748  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2749  * node, the node is taken off the unmapped list. The binding list is checked
2750  * for a valid binding, or a binding is automatically assigned. If binding
2751  * assignment is unsuccessful, the node is left on the unmapped list. If
2752  * binding assignment is successful, the associated binding list entry (if
2753  * any) is removed, and the node is placed on the mapped list.
2754  */
2755 /*
2756  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2757  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2758  * expire, all effected nodes will receive a DEVICE_RM event.
2759  */
2760 /*
2761  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2762  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2763  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2764  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2765  * we will first process the ADISC list.  32 entries are processed initially and
2766  * ADISC is initited for each one.  Completions / Events for each node are
2767  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2768  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2769  * waiting, and the ADISC list count is identically 0, then we are done. For
2770  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2771  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2772  * list.  32 entries are processed initially and PLOGI is initited for each one.
2773  * Completions / Events for each node are funnelled thru the state machine.  As
2774  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2775  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2776  * indentically 0, then we are done. We have now completed discovery / RSCN
2777  * handling. Upon completion, ALL nodes should be on either the mapped or
2778  * unmapped lists.
2779  */
2780 
2781 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2782      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2783         /* Action routine                  Event       Current State  */
2784         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2785         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2786         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2787         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2788         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2789         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2790         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2791         lpfc_disc_illegal,              /* CMPL_PRLI       */
2792         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2793         lpfc_disc_illegal,              /* CMPL_ADISC      */
2794         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2795         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2796         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2797 
2798         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2799         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2800         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2801         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2802         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2803         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2804         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2805         lpfc_disc_illegal,              /* CMPL_PRLI       */
2806         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2807         lpfc_disc_illegal,              /* CMPL_ADISC      */
2808         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2809         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2810         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2811 
2812         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2813         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2814         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2815         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2816         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2817         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2818         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2819         lpfc_disc_illegal,              /* CMPL_PRLI       */
2820         lpfc_disc_illegal,              /* CMPL_LOGO       */
2821         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2822         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2823         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2824         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2825 
2826         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2827         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2828         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2829         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2830         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2831         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2832         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2833         lpfc_disc_illegal,              /* CMPL_PRLI       */
2834         lpfc_disc_illegal,              /* CMPL_LOGO       */
2835         lpfc_disc_illegal,              /* CMPL_ADISC      */
2836         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2837         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2838         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2839 
2840         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2841         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2842         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2843         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2844         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2845         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2846         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2847         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2848         lpfc_disc_illegal,              /* CMPL_LOGO       */
2849         lpfc_disc_illegal,              /* CMPL_ADISC      */
2850         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2851         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2852         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2853 
2854         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2855         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2856         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2857         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2858         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2859         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2860         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2861         lpfc_disc_illegal,              /* CMPL_PRLI       */
2862         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2863         lpfc_disc_illegal,              /* CMPL_ADISC      */
2864         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2865         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2866         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2867 
2868         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2869         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2870         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2871         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2872         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2873         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2874         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2875         lpfc_disc_illegal,              /* CMPL_PRLI       */
2876         lpfc_disc_illegal,              /* CMPL_LOGO       */
2877         lpfc_disc_illegal,              /* CMPL_ADISC      */
2878         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2879         lpfc_disc_illegal,              /* DEVICE_RM       */
2880         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2881 
2882         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2883         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2884         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2885         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2886         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2887         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2888         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2889         lpfc_disc_illegal,              /* CMPL_PRLI       */
2890         lpfc_disc_illegal,              /* CMPL_LOGO       */
2891         lpfc_disc_illegal,              /* CMPL_ADISC      */
2892         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2893         lpfc_disc_illegal,              /* DEVICE_RM       */
2894         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2895 
2896         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2897         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2898         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2899         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2900         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2901         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2902         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2903         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2904         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2905         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2906         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2907         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2908         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2909 };
2910 
2911 int
2912 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2913                         void *arg, uint32_t evt)
2914 {
2915         uint32_t cur_state, rc;
2916         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2917                          uint32_t);
2918         uint32_t got_ndlp = 0;
2919         uint32_t data1;
2920 
2921         if (lpfc_nlp_get(ndlp))
2922                 got_ndlp = 1;
2923 
2924         cur_state = ndlp->nlp_state;
2925 
2926         data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
2927                 ((uint32_t)ndlp->nlp_type));
2928         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2929         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2930                          "0211 DSM in event x%x on NPort x%x in "
2931                          "state %d rpi x%x Data: x%x x%x\n",
2932                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
2933                          ndlp->nlp_flag, data1);
2934 
2935         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2936                  "DSM in:          evt:%d ste:%d did:x%x",
2937                 evt, cur_state, ndlp->nlp_DID);
2938 
2939         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2940         rc = (func) (vport, ndlp, arg, evt);
2941 
2942         /* DSM out state <rc> on NPort <nlp_DID> */
2943         if (got_ndlp) {
2944                 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
2945                         ((uint32_t)ndlp->nlp_type));
2946                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2947                          "0212 DSM out state %d on NPort x%x "
2948                          "rpi x%x Data: x%x x%x\n",
2949                          rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
2950                          data1);
2951 
2952                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2953                         "DSM out:         ste:%d did:x%x flg:x%x",
2954                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2955                 /* Decrement the ndlp reference count held for this function */
2956                 lpfc_nlp_put(ndlp);
2957         } else {
2958                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2959                         "0213 DSM out state %d on NPort free\n", rc);
2960 
2961                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2962                         "DSM out:         ste:%d did:x%x flg:x%x",
2963                         rc, 0, 0);
2964         }
2965 
2966         return rc;
2967 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/scsi/lpfc/lpfc_nportdisc.c

DEFINITIONS
