drivers/scsi/lpfc/lpfc_nportdisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi.h>
  30 #include <scsi/scsi_device.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport_fc.h>
  33 #include <scsi/fc/fc_fs.h>
  34
  35 #include "lpfc_hw4.h"
  36 #include "lpfc_hw.h"
  37 #include "lpfc_sli.h"
  38 #include "lpfc_sli4.h"
  39 #include "lpfc_nl.h"
  40 #include "lpfc_disc.h"
  41 #include "lpfc.h"
  42 #include "lpfc_scsi.h"
  43 #include "lpfc_nvme.h"
  44 #include "lpfc_logmsg.h"
  45 #include "lpfc_crtn.h"
  46 #include "lpfc_vport.h"
  47 #include "lpfc_debugfs.h"
  48
  49
  50 /* Called to verify a rcv'ed ADISC was intended for us. */
  51 static int
  52 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  53                  struct lpfc_name *nn, struct lpfc_name *pn)
  54 {
  55         /* First, we MUST have a RPI registered */
  56         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  57                 return 0;
  58
  59         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  60          * table entry for that node.
  61          */
  62         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  63                 return 0;
  64
  65         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  66                 return 0;
  67
  68         /* we match, return success */
  69         return 1;
  70 }
  71
  72 int
  73 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  74                  struct serv_parm *sp, uint32_t class, int flogi)
  75 {
  76         volatile struct serv_parm *hsp = &vport->fc_sparam;
  77         uint16_t hsp_value, ssp_value = 0;
  78
  79         /*
  80          * The receive data field size and buffer-to-buffer receive data field
  81          * size entries are 16 bits but are represented as two 8-bit fields in
  82          * the driver data structure to account for rsvd bits and other control
  83          * bits.  Reconstruct and compare the fields as a 16-bit values before
  84          * correcting the byte values.
  85          */
  86         if (sp->cls1.classValid) {
  87                 if (!flogi) {
  88                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  89                                      hsp->cls1.rcvDataSizeLsb);
  90                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  91                                      sp->cls1.rcvDataSizeLsb);
  92                         if (!ssp_value)
  93                                 goto bad_service_param;
  94                         if (ssp_value > hsp_value) {
  95                                 sp->cls1.rcvDataSizeLsb =
  96                                         hsp->cls1.rcvDataSizeLsb;
  97                                 sp->cls1.rcvDataSizeMsb =
  98                                         hsp->cls1.rcvDataSizeMsb;
  99                         }
 100                 }
 101         } else if (class == CLASS1)
 102                 goto bad_service_param;
 103         if (sp->cls2.classValid) {
 104                 if (!flogi) {
 105                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 106                                      hsp->cls2.rcvDataSizeLsb);
 107                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 108                                      sp->cls2.rcvDataSizeLsb);
 109                         if (!ssp_value)
 110                                 goto bad_service_param;
 111                         if (ssp_value > hsp_value) {
 112                                 sp->cls2.rcvDataSizeLsb =
 113                                         hsp->cls2.rcvDataSizeLsb;
 114                                 sp->cls2.rcvDataSizeMsb =
 115                                         hsp->cls2.rcvDataSizeMsb;
 116                         }
 117                 }
 118         } else if (class == CLASS2)
 119                 goto bad_service_param;
 120         if (sp->cls3.classValid) {
 121                 if (!flogi) {
 122                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 123                                      hsp->cls3.rcvDataSizeLsb);
 124                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 125                                      sp->cls3.rcvDataSizeLsb);
 126                         if (!ssp_value)
 127                                 goto bad_service_param;
 128                         if (ssp_value > hsp_value) {
 129                                 sp->cls3.rcvDataSizeLsb =
 130                                         hsp->cls3.rcvDataSizeLsb;
 131                                 sp->cls3.rcvDataSizeMsb =
 132                                         hsp->cls3.rcvDataSizeMsb;
 133                         }
 134                 }
 135         } else if (class == CLASS3)
 136                 goto bad_service_param;
 137
 138         /*
 139          * Preserve the upper four bits of the MSB from the PLOGI response.
 140          * These bits contain the Buffer-to-Buffer State Change Number
 141          * from the target and need to be passed to the FW.
 142          */
 143         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 144         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 145         if (ssp_value > hsp_value) {
 146                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 147                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 148                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 149         }
 150
 151         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 152         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 153         return 1;
 154 bad_service_param:
 155         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 156                          "0207 Device %x "
 157                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 158                          "invalid service parameters.  Ignoring device.\n",
 159                          ndlp->nlp_DID,
 160                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 161                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 162                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 163                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 164         return 0;
 165 }
 166
 167 static void *
 168 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 169                         struct lpfc_iocbq *rspiocb)
 170 {
 171         struct lpfc_dmabuf *pcmd, *prsp;
 172         uint32_t *lp;
 173         void     *ptr = NULL;
 174         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
 175
 176         pcmd = cmdiocb->cmd_dmabuf;
 177
 178         /* For lpfc_els_abort, cmd_dmabuf could be zero'ed to delay
 179          * freeing associated memory till after ABTS completes.
 180          */
 181         if (pcmd) {
 182                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 183                                        list);
 184                 if (prsp) {
 185                         lp = (uint32_t *) prsp->virt;
 186                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 187                 }
 188         } else {
 189                 /* Force ulp_status error since we are returning NULL ptr */
 190                 if (!(ulp_status)) {
 191                         if (phba->sli_rev == LPFC_SLI_REV4) {
 192                                 bf_set(lpfc_wcqe_c_status, &rspiocb->wcqe_cmpl,
 193                                        IOSTAT_LOCAL_REJECT);
 194                                 rspiocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
 195                         } else {
 196                                 rspiocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
 197                                 rspiocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
 198                         }
 199                 }
 200                 ptr = NULL;
 201         }
 202         return ptr;
 203 }
 204
 205
 206
 207 /*
 208  * Free resources / clean up outstanding I/Os
 209  * associated with a LPFC_NODELIST entry. This
 210  * routine effectively results in a "software abort".
 211  */
 212 void
 213 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 214 {
 215         LIST_HEAD(abort_list);
 216         struct lpfc_sli_ring *pring;
 217         struct lpfc_iocbq *iocb, *next_iocb;
 218
 219         pring = lpfc_phba_elsring(phba);
 220
 221         /* In case of error recovery path, we might have a NULL pring here */
 222         if (unlikely(!pring))
 223                 return;
 224
 225         /* Abort outstanding I/O on NPort <nlp_DID> */
 226         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 227                          "2819 Abort outstanding I/O on NPort x%x "
 228                          "Data: x%x x%x x%x\n",
 229                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 230                          ndlp->nlp_rpi);
 231         /* Clean up all fabric IOs first.*/
 232         lpfc_fabric_abort_nport(ndlp);
 233
 234         /*
 235          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 236          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 237          * txcmplq so that the abort operation completes them successfully.
 238          */
 239         spin_lock_irq(&phba->hbalock);
 240         if (phba->sli_rev == LPFC_SLI_REV4)
 241                 spin_lock(&pring->ring_lock);
 242         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 243         /* Add to abort_list on on NDLP match. */
 244                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 245                         list_add_tail(&iocb->dlist, &abort_list);
 246         }
 247         if (phba->sli_rev == LPFC_SLI_REV4)
 248                 spin_unlock(&pring->ring_lock);
 249         spin_unlock_irq(&phba->hbalock);
 250
 251         /* Abort the targeted IOs and remove them from the abort list. */
 252         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 253                         spin_lock_irq(&phba->hbalock);
 254                         list_del_init(&iocb->dlist);
 255                         lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
 256                         spin_unlock_irq(&phba->hbalock);
 257         }
 258         /* Make sure HBA is alive */
 259         lpfc_issue_hb_tmo(phba);
 260
 261         INIT_LIST_HEAD(&abort_list);
 262
 263         /* Now process the txq */
 264         spin_lock_irq(&phba->hbalock);
 265         if (phba->sli_rev == LPFC_SLI_REV4)
 266                 spin_lock(&pring->ring_lock);
 267
 268         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 269                 /* Check to see if iocb matches the nport we are looking for */
 270                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 271                         list_del_init(&iocb->list);
 272                         list_add_tail(&iocb->list, &abort_list);
 273                 }
 274         }
 275
 276         if (phba->sli_rev == LPFC_SLI_REV4)
 277                 spin_unlock(&pring->ring_lock);
 278         spin_unlock_irq(&phba->hbalock);
 279
 280         /* Cancel all the IOCBs from the completions list */
 281         lpfc_sli_cancel_iocbs(phba, &abort_list,
 282                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 283
 284         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 285 }
 286
 287 /* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
 288  * @phba: pointer to lpfc hba data structure.
 289  * @login_mbox: pointer to REG_RPI mailbox object
 290  *
 291  * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
 292  */
 293 static void
 294 lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
 295 {
 296         struct lpfc_iocbq *save_iocb;
 297         struct lpfc_nodelist *ndlp;
 298         MAILBOX_t *mb = &login_mbox->u.mb;
 299
 300         int rc;
 301
 302         ndlp = login_mbox->ctx_ndlp;
 303         save_iocb = login_mbox->context3;
 304
 305         if (mb->mbxStatus == MBX_SUCCESS) {
 306                 /* Now that REG_RPI completed successfully,
 307                  * we can now proceed with sending the PLOGI ACC.
 308                  */
 309                 rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
 310                                       save_iocb, ndlp, NULL);
 311                 if (rc) {
 312                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 313                                         "4576 PLOGI ACC fails pt2pt discovery: "
 314                                         "DID %x Data: %x\n", ndlp->nlp_DID, rc);
 315                 }
 316         }
 317
 318         /* Now process the REG_RPI cmpl */
 319         lpfc_mbx_cmpl_reg_login(phba, login_mbox);
 320         ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
 321         kfree(save_iocb);
 322 }
 323
 324 static int
 325 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 326                struct lpfc_iocbq *cmdiocb)
 327 {
 328         struct lpfc_hba    *phba = vport->phba;
 329         struct lpfc_dmabuf *pcmd;
 330         uint64_t nlp_portwwn = 0;
 331         uint32_t *lp;
 332         union lpfc_wqe128 *wqe;
 333         IOCB_t *icmd;
 334         struct serv_parm *sp;
 335         uint32_t ed_tov;
 336         LPFC_MBOXQ_t *link_mbox;
 337         LPFC_MBOXQ_t *login_mbox;
 338         struct lpfc_iocbq *save_iocb;
 339         struct ls_rjt stat;
 340         uint32_t vid, flag;
 341         int rc;
 342         u32 remote_did;
 343
 344         memset(&stat, 0, sizeof (struct ls_rjt));
 345         pcmd = cmdiocb->cmd_dmabuf;
 346         lp = (uint32_t *) pcmd->virt;
 347         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 348         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 349                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 350                                  "0140 PLOGI Reject: invalid pname\n");
 351                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 352                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 353                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 354                         NULL);
 355                 return 0;
 356         }
 357         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 358                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 359                                  "0141 PLOGI Reject: invalid nname\n");
 360                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 361                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 362                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 363                         NULL);
 364                 return 0;
 365         }
 366
 367         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 368         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 369                 /* Reject this request because invalid parameters */
 370                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 371                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 372                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 373                         NULL);
 374                 return 0;
 375         }
 376
 377         if (phba->sli_rev == LPFC_SLI_REV4)
 378                 wqe = &cmdiocb->wqe;
 379         else
 380                 icmd = &cmdiocb->iocb;
 381
 382         /* PLOGI chkparm OK */
 383         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 384                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 385                          "x%x x%x x%x\n",
 386                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 387                          ndlp->nlp_rpi, vport->port_state,
 388                          vport->fc_flag);
 389
 390         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 391                 ndlp->nlp_fcp_info |= CLASS2;
 392         else
 393                 ndlp->nlp_fcp_info |= CLASS3;
 394
 395         ndlp->nlp_class_sup = 0;
 396         if (sp->cls1.classValid)
 397                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 398         if (sp->cls2.classValid)
 399                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 400         if (sp->cls3.classValid)
 401                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 402         if (sp->cls4.classValid)
 403                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 404         ndlp->nlp_maxframe =
 405                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 406         /* if already logged in, do implicit logout */
 407         switch (ndlp->nlp_state) {
 408         case  NLP_STE_NPR_NODE:
 409                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 410                         break;
 411                 fallthrough;
 412         case  NLP_STE_REG_LOGIN_ISSUE:
 413         case  NLP_STE_PRLI_ISSUE:
 414         case  NLP_STE_UNMAPPED_NODE:
 415         case  NLP_STE_MAPPED_NODE:
 416                 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
 417                  * For target mode, execute implicit logo.
 418                  * Fabric nodes go into NPR.
 419                  */
 420                 if (!(ndlp->nlp_type & NLP_FABRIC) &&
 421                     !(phba->nvmet_support)) {
 422                         /* Clear ndlp info, since follow up PRLI may have
 423                          * updated ndlp information
 424                          */
 425                         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 426                         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
 427                         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 428                         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
 429                         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 430
 431                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 432                                          ndlp, NULL);
 433                         return 1;
 434                 }
 435                 if (nlp_portwwn != 0 &&
 436                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 437                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 438                                          "0143 PLOGI recv'd from DID: x%x "
 439                                          "WWPN changed: old %llx new %llx\n",
 440                                          ndlp->nlp_DID,
 441                                          (unsigned long long)nlp_portwwn,
 442                                          (unsigned long long)
 443                                          wwn_to_u64(sp->portName.u.wwn));
 444
 445                 /* Notify transport of connectivity loss to trigger cleanup. */
 446                 if (phba->nvmet_support &&
 447                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
 448                         lpfc_nvmet_invalidate_host(phba, ndlp);
 449
 450                 ndlp->nlp_prev_state = ndlp->nlp_state;
 451                 /* rport needs to be unregistered first */
 452                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 453                 break;
 454         }
 455
 456         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 457         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
 458         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 459         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
 460         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 461
 462         login_mbox = NULL;
 463         link_mbox = NULL;
 464         save_iocb = NULL;
 465
 466         /* Check for Nport to NPort pt2pt protocol */
 467         if ((vport->fc_flag & FC_PT2PT) &&
 468             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 469                 /* rcv'ed PLOGI decides what our NPortId will be */
 470                 if (phba->sli_rev == LPFC_SLI_REV4) {
 471                         vport->fc_myDID = bf_get(els_rsp64_sid,
 472                                                  &cmdiocb->wqe.xmit_els_rsp);
 473                 } else {
 474                         vport->fc_myDID = icmd->un.rcvels.parmRo;
 475                 }
 476
 477                 /* If there is an outstanding FLOGI, abort it now.
 478                  * The remote NPort is not going to ACC our FLOGI
 479                  * if its already issuing a PLOGI for pt2pt mode.
 480                  * This indicates our FLOGI was dropped; however, we
 481                  * must have ACCed the remote NPorts FLOGI to us
 482                  * to make it here.
 483                  */
 484                 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
 485                         lpfc_els_abort_flogi(phba);
 486
 487                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 488                 if (sp->cmn.edtovResolution) {
 489                         /* E_D_TOV ticks are in nanoseconds */
 490                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 491                 }
 492
 493                 /*
 494                  * For pt-to-pt, use the larger EDTOV
 495                  * RATOV = 2 * EDTOV
 496                  */
 497                 if (ed_tov > phba->fc_edtov)
 498                         phba->fc_edtov = ed_tov;
 499                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 500
 501                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 502
 503                 /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
 504                  * to account for updated TOV's / parameters
 505                  */
 506                 if (phba->sli_rev == LPFC_SLI_REV4)
 507                         lpfc_issue_reg_vfi(vport);
 508                 else {
 509                         link_mbox = mempool_alloc(phba->mbox_mem_pool,
 510                                                   GFP_KERNEL);
 511                         if (!link_mbox)
 512                                 goto out;
 513                         lpfc_config_link(phba, link_mbox);
 514                         link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 515                         link_mbox->vport = vport;
 516
 517                         /* The default completion handling for CONFIG_LINK
 518                          * does not require the ndlp so no reference is needed.
 519                          */
 520                         link_mbox->ctx_ndlp = ndlp;
 521
 522                         rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
 523                         if (rc == MBX_NOT_FINISHED) {
 524                                 mempool_free(link_mbox, phba->mbox_mem_pool);
 525                                 goto out;
 526                         }
 527                 }
 528
 529                 lpfc_can_disctmo(vport);
 530         }
 531
 532         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
 533         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
 534             sp->cmn.valid_vendor_ver_level) {
 535                 vid = be32_to_cpu(sp->un.vv.vid);
 536                 flag = be32_to_cpu(sp->un.vv.flags);
 537                 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
 538                         ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
 539         }
 540
 541         login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 542         if (!login_mbox)
 543                 goto out;
 544
 545         save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
 546         if (!save_iocb)
 547                 goto out;
 548
 549         /* Save info from cmd IOCB to be used in rsp after all mbox completes */
 550         memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
 551                sizeof(struct lpfc_iocbq));
 552
 553         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 554         if (phba->sli_rev == LPFC_SLI_REV4)
 555                 lpfc_unreg_rpi(vport, ndlp);
 556
 557         /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
 558          * always be deferring the ACC.
 559          */
 560         if (phba->sli_rev == LPFC_SLI_REV4)
 561                 remote_did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
 562         else
 563                 remote_did = icmd->un.rcvels.remoteID;
 564         rc = lpfc_reg_rpi(phba, vport->vpi, remote_did,
 565                             (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
 566         if (rc)
 567                 goto out;
 568
 569         login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 570         login_mbox->vport = vport;
 571
 572         /*
 573          * If there is an outstanding PLOGI issued, abort it before
 574          * sending ACC rsp for received PLOGI. If pending plogi
 575          * is not canceled here, the plogi will be rejected by
 576          * remote port and will be retried. On a configuration with
 577          * single discovery thread, this will cause a huge delay in
 578          * discovery. Also this will cause multiple state machines
 579          * running in parallel for this node.
 580          * This only applies to a fabric environment.
 581          */
 582         if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
 583             (vport->fc_flag & FC_FABRIC)) {
 584                 /* software abort outstanding PLOGI */
 585                 lpfc_els_abort(phba, ndlp);
 586         }
 587
 588         if ((vport->port_type == LPFC_NPIV_PORT &&
 589              vport->cfg_restrict_login)) {
 590
 591                 /* no deferred ACC */
 592                 kfree(save_iocb);
 593
 594                 /* This is an NPIV SLI4 instance that does not need to register
 595                  * a default RPI.
 596                  */
 597                 if (phba->sli_rev == LPFC_SLI_REV4) {
 598                         lpfc_mbox_rsrc_cleanup(phba, login_mbox,
 599                                                MBOX_THD_UNLOCKED);
 600                         login_mbox = NULL;
 601                 } else {
 602                         /* In order to preserve RPIs, we want to cleanup
 603                          * the default RPI the firmware created to rcv
 604                          * this ELS request. The only way to do this is
 605                          * to register, then unregister the RPI.
 606                          */
 607                         spin_lock_irq(&ndlp->lock);
 608                         ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
 609                                            NLP_RCV_PLOGI);
 610                         spin_unlock_irq(&ndlp->lock);
 611                 }
 612
 613                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 614                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 615                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 616                                          ndlp, login_mbox);
 617                 if (rc && login_mbox)
 618                         lpfc_mbox_rsrc_cleanup(phba, login_mbox,
 619                                                MBOX_THD_UNLOCKED);
 620                 return 1;
 621         }
 622
 623         /* So the order here should be:
 624          * SLI3 pt2pt
 625          *   Issue CONFIG_LINK mbox
 626          *   CONFIG_LINK cmpl
 627          * SLI4 pt2pt
 628          *   Issue REG_VFI mbox
 629          *   REG_VFI cmpl
 630          * SLI4
 631          *   Issue UNREG RPI mbx
 632          *   UNREG RPI cmpl
 633          * Issue REG_RPI mbox
 634          * REG RPI cmpl
 635          * Issue PLOGI ACC
 636          * PLOGI ACC cmpl
 637          */
 638         login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
 639         login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
 640         if (!login_mbox->ctx_ndlp)
 641                 goto out;
 642
 643         login_mbox->context3 = save_iocb; /* For PLOGI ACC */
 644
 645         spin_lock_irq(&ndlp->lock);
 646         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 647         spin_unlock_irq(&ndlp->lock);
 648
 649         /* Start the ball rolling by issuing REG_LOGIN here */
 650         rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
 651         if (rc == MBX_NOT_FINISHED) {
 652                 lpfc_nlp_put(ndlp);
 653                 goto out;
 654         }
 655         lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 656
 657         return 1;
 658 out:
 659         kfree(save_iocb);
 660         if (login_mbox)
 661                 mempool_free(login_mbox, phba->mbox_mem_pool);
 662
 663         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 664         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 665         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 666         return 0;
 667 }
 668
 669 /**
 670  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 671  * @phba: pointer to lpfc hba data structure.
 672  * @mboxq: pointer to mailbox object
 673  *
 674  * This routine is invoked to issue a completion to a rcv'ed
 675  * ADISC or PDISC after the paused RPI has been resumed.
 676  **/
 677 static void
 678 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 679 {
 680         struct lpfc_vport *vport;
 681         struct lpfc_iocbq *elsiocb;
 682         struct lpfc_nodelist *ndlp;
 683         uint32_t cmd;
 684
 685         elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
 686         ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
 687         vport = mboxq->vport;
 688         cmd = elsiocb->drvrTimeout;
 689
 690         if (cmd == ELS_CMD_ADISC) {
 691                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 692         } else {
 693                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 694                         ndlp, NULL);
 695         }
 696
 697         /* This nlp_put pairs with lpfc_sli4_resume_rpi */
 698         lpfc_nlp_put(ndlp);
 699
 700         kfree(elsiocb);
 701         mempool_free(mboxq, phba->mbox_mem_pool);
 702 }
 703
 704 static int
 705 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 706                 struct lpfc_iocbq *cmdiocb)
 707 {
 708         struct lpfc_hba *phba = vport->phba;
 709         struct lpfc_iocbq  *elsiocb;
 710         struct lpfc_dmabuf *pcmd;
 711         struct serv_parm   *sp;
 712         struct lpfc_name   *pnn, *ppn;
 713         struct ls_rjt stat;
 714         ADISC *ap;
 715         uint32_t *lp;
 716         uint32_t cmd;
 717
 718         pcmd = cmdiocb->cmd_dmabuf;
 719         lp = (uint32_t *) pcmd->virt;
 720
 721         cmd = *lp++;
 722         if (cmd == ELS_CMD_ADISC) {
 723                 ap = (ADISC *) lp;
 724                 pnn = (struct lpfc_name *) & ap->nodeName;
 725                 ppn = (struct lpfc_name *) & ap->portName;
 726         } else {
 727                 sp = (struct serv_parm *) lp;
 728                 pnn = (struct lpfc_name *) & sp->nodeName;
 729                 ppn = (struct lpfc_name *) & sp->portName;
 730         }
 731
 732         if (get_job_ulpstatus(phba, cmdiocb) == 0 &&
 733             lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 734
 735                 /*
 736                  * As soon as  we send ACC, the remote NPort can
 737                  * start sending us data. Thus, for SLI4 we must
 738                  * resume the RPI before the ACC goes out.
 739                  */
 740                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 741                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 742                                 GFP_KERNEL);
 743                         if (elsiocb) {
 744                                 /* Save info from cmd IOCB used in rsp */
 745                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 746                                         sizeof(struct lpfc_iocbq));
 747
 748                                 /* Save the ELS cmd */
 749                                 elsiocb->drvrTimeout = cmd;
 750
 751                                 lpfc_sli4_resume_rpi(ndlp,
 752                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 753                                 goto out;
 754                         }
 755                 }
 756
 757                 if (cmd == ELS_CMD_ADISC) {
 758                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 759                 } else {
 760                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 761                                 ndlp, NULL);
 762                 }
 763 out:
 764                 /* If we are authenticated, move to the proper state.
 765                  * It is possible an ADISC arrived and the remote nport
 766                  * is already in MAPPED or UNMAPPED state.  Catch this
 767                  * condition and don't set the nlp_state again because
 768                  * it causes an unnecessary transport unregister/register.
 769                  *
 770                  * Nodes marked for ADISC will move MAPPED or UNMAPPED state
 771                  * after issuing ADISC
 772                  */
 773                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
 774                         if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
 775                             !(ndlp->nlp_flag & NLP_NPR_ADISC))
 776                                 lpfc_nlp_set_state(vport, ndlp,
 777                                                    NLP_STE_MAPPED_NODE);
 778                 }
 779
 780                 return 1;
 781         }
 782         /* Reject this request because invalid parameters */
 783         stat.un.b.lsRjtRsvd0 = 0;
 784         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 785         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 786         stat.un.b.vendorUnique = 0;
 787         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 788
 789         /* 1 sec timeout */
 790         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 791
 792         spin_lock_irq(&ndlp->lock);
 793         ndlp->nlp_flag |= NLP_DELAY_TMO;
 794         spin_unlock_irq(&ndlp->lock);
 795         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 796         ndlp->nlp_prev_state = ndlp->nlp_state;
 797         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 798         return 0;
 799 }
 800
 801 static int
 802 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 803               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 804 {
 805         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 806         struct lpfc_hba    *phba = vport->phba;
 807         struct lpfc_vport **vports;
 808         int i, active_vlink_present = 0 ;
 809
 810         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 811         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 812          * PLOGIs during LOGO storms from a device.
 813          */
 814         spin_lock_irq(&ndlp->lock);
 815         ndlp->nlp_flag |= NLP_LOGO_ACC;
 816         spin_unlock_irq(&ndlp->lock);
 817         if (els_cmd == ELS_CMD_PRLO)
 818                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 819         else
 820                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 821
 822         /* This clause allows the initiator to ACC the LOGO back to the
 823          * Fabric Domain Controller.  It does deliberately skip all other
 824          * steps because some fabrics send RDP requests after logging out
 825          * from the initiator.
 826          */
 827         if (ndlp->nlp_type & NLP_FABRIC &&
 828             ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
 829                 return 0;
 830
 831         /* Notify transport of connectivity loss to trigger cleanup. */
 832         if (phba->nvmet_support &&
 833             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
 834                 lpfc_nvmet_invalidate_host(phba, ndlp);
 835
 836         if (ndlp->nlp_DID == Fabric_DID) {
 837                 if (vport->port_state <= LPFC_FDISC)
 838                         goto out;
 839                 lpfc_linkdown_port(vport);
 840                 spin_lock_irq(shost->host_lock);
 841                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 842                 spin_unlock_irq(shost->host_lock);
 843                 vports = lpfc_create_vport_work_array(phba);
 844                 if (vports) {
 845                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 846                                         i++) {
 847                                 if ((!(vports[i]->fc_flag &
 848                                         FC_VPORT_LOGO_RCVD)) &&
 849                                         (vports[i]->port_state > LPFC_FDISC)) {
 850                                         active_vlink_present = 1;
 851                                         break;
 852                                 }
 853                         }
 854                         lpfc_destroy_vport_work_array(phba, vports);
 855                 }
 856
 857                 /*
 858                  * Don't re-instantiate if vport is marked for deletion.
 859                  * If we are here first then vport_delete is going to wait
 860                  * for discovery to complete.
 861                  */
 862                 if (!(vport->load_flag & FC_UNLOADING) &&
 863                                         active_vlink_present) {
 864                         /*
 865                          * If there are other active VLinks present,
 866                          * re-instantiate the Vlink using FDISC.
 867                          */
 868                         mod_timer(&ndlp->nlp_delayfunc,
 869                                   jiffies + msecs_to_jiffies(1000));
 870                         spin_lock_irq(&ndlp->lock);
 871                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 872                         spin_unlock_irq(&ndlp->lock);
 873                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 874                         vport->port_state = LPFC_FDISC;
 875                 } else {
 876                         spin_lock_irq(shost->host_lock);
 877                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 878                         spin_unlock_irq(shost->host_lock);
 879                         lpfc_retry_pport_discovery(phba);
 880                 }
 881         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 882                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 883                 (ndlp->nlp_type & NLP_NVME_TARGET) ||
 884                 (vport->fc_flag & FC_PT2PT))) ||
 885                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 886                 /* Only try to re-login if this is NOT a Fabric Node
 887                  * AND the remote NPORT is a FCP/NVME Target or we
 888                  * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
 889                  * case for LOGO as a response to ADISC behavior.
 890                  */
 891                 mod_timer(&ndlp->nlp_delayfunc,
 892                           jiffies + msecs_to_jiffies(1000 * 1));
 893                 spin_lock_irq(&ndlp->lock);
 894                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 895                 spin_unlock_irq(&ndlp->lock);
 896
 897                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 898         }
 899 out:
 900         /* Unregister from backend, could have been skipped due to ADISC */
 901         lpfc_nlp_unreg_node(vport, ndlp);
 902
 903         ndlp->nlp_prev_state = ndlp->nlp_state;
 904         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 905
 906         spin_lock_irq(&ndlp->lock);
 907         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 908         spin_unlock_irq(&ndlp->lock);
 909         /* The driver has to wait until the ACC completes before it continues
 910          * processing the LOGO.  The action will resume in
 911          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 912          * unreg_login, the driver waits so the ACC does not get aborted.
 913          */
 914         return 0;
 915 }
 916
 917 static uint32_t
 918 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
 919                             struct lpfc_nodelist *ndlp,
 920                             struct lpfc_iocbq *cmdiocb)
 921 {
 922         struct ls_rjt stat;
 923         uint32_t *payload;
 924         uint32_t cmd;
 925
 926         payload = cmdiocb->cmd_dmabuf->virt;
 927         cmd = *payload;
 928         if (vport->phba->nvmet_support) {
 929                 /* Must be a NVME PRLI */
 930                 if (cmd ==  ELS_CMD_PRLI)
 931                         goto out;
 932         } else {
 933                 /* Initiator mode. */
 934                 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
 935                         goto out;
 936         }
 937         return 1;
 938 out:
 939         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
 940                          "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
 941                          "state x%x flags x%x\n",
 942                          cmd, ndlp->nlp_rpi, ndlp->nlp_state,
 943                          ndlp->nlp_flag);
 944         memset(&stat, 0, sizeof(struct ls_rjt));
 945         stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
 946         stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
 947         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 948                             ndlp, NULL);
 949         return 0;
 950 }
 951
 952 static void
 953 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 954               struct lpfc_iocbq *cmdiocb)
 955 {
 956         struct lpfc_hba  *phba = vport->phba;
 957         struct lpfc_dmabuf *pcmd;
 958         uint32_t *lp;
 959         PRLI *npr;
 960         struct fc_rport *rport = ndlp->rport;
 961         u32 roles;
 962
 963         pcmd = cmdiocb->cmd_dmabuf;
 964         lp = (uint32_t *)pcmd->virt;
 965         npr = (PRLI *)((uint8_t *)lp + sizeof(uint32_t));
 966
 967         if ((npr->prliType == PRLI_FCP_TYPE) ||
 968             (npr->prliType == PRLI_NVME_TYPE)) {
 969                 if (npr->initiatorFunc) {
 970                         if (npr->prliType == PRLI_FCP_TYPE)
 971                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 972                         if (npr->prliType == PRLI_NVME_TYPE)
 973                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 974                 }
 975                 if (npr->targetFunc) {
 976                         if (npr->prliType == PRLI_FCP_TYPE)
 977                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 978                         if (npr->prliType == PRLI_NVME_TYPE)
 979                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 980                         if (npr->writeXferRdyDis)
 981                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 982                 }
 983                 if (npr->Retry && ndlp->nlp_type &
 984                                         (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
 985                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 986
 987                 if (npr->Retry && phba->nsler &&
 988                     ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
 989                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
 990
 991
 992                 /* If this driver is in nvme target mode, set the ndlp's fc4
 993                  * type to NVME provided the PRLI response claims NVME FC4
 994                  * type.  Target mode does not issue gft_id so doesn't get
 995                  * the fc4 type set until now.
 996                  */
 997                 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
 998                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 999                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1000                 }
1001
1002                 /* Fabric Controllers send FCP PRLI as an initiator but should
1003                  * not get recognized as FCP type and registered with transport.
1004                  */
1005                 if (npr->prliType == PRLI_FCP_TYPE &&
1006                     !(ndlp->nlp_type & NLP_FABRIC))
1007                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1008         }
1009         if (rport) {
1010                 /* We need to update the rport role values */
1011                 roles = FC_RPORT_ROLE_UNKNOWN;
1012                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1013                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1014                 if (ndlp->nlp_type & NLP_FCP_TARGET)
1015                         roles |= FC_RPORT_ROLE_FCP_TARGET;
1016
1017                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1018                         "rport rolechg:   role:x%x did:x%x flg:x%x",
1019                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
1020
1021                 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1022                         fc_remote_port_rolechg(rport, roles);
1023         }
1024 }
1025
1026 static uint32_t
1027 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1028 {
1029         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1030                 spin_lock_irq(&ndlp->lock);
1031                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1032                 spin_unlock_irq(&ndlp->lock);
1033                 return 0;
1034         }
1035
1036         if (!(vport->fc_flag & FC_PT2PT)) {
1037                 /* Check config parameter use-adisc or FCP-2 */
1038                 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1039                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1040                      (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1041                         spin_lock_irq(&ndlp->lock);
1042                         ndlp->nlp_flag |= NLP_NPR_ADISC;
1043                         spin_unlock_irq(&ndlp->lock);
1044                         return 1;
1045                 }
1046         }
1047
1048         spin_lock_irq(&ndlp->lock);
1049         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1050         spin_unlock_irq(&ndlp->lock);
1051         lpfc_unreg_rpi(vport, ndlp);
1052         return 0;
1053 }
1054
1055 /**
1056  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1057  * @phba : Pointer to lpfc_hba structure.
1058  * @vport: Pointer to lpfc_vport structure.
1059  * @ndlp: Pointer to lpfc_nodelist structure.
1060  * @rpi  : rpi to be release.
1061  *
1062  * This function will send a unreg_login mailbox command to the firmware
1063  * to release a rpi.
1064  **/
1065 static void
1066 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1067                  struct lpfc_nodelist *ndlp, uint16_t rpi)
1068 {
1069         LPFC_MBOXQ_t *pmb;
1070         int rc;
1071
1072         /* If there is already an UNREG in progress for this ndlp,
1073          * no need to queue up another one.
1074          */
1075         if (ndlp->nlp_flag & NLP_UNREG_INP) {
1076                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1077                                  "1435 release_rpi SKIP UNREG x%x on "
1078                                  "NPort x%x deferred x%x  flg x%x "
1079                                  "Data: x%px\n",
1080                                  ndlp->nlp_rpi, ndlp->nlp_DID,
1081                                  ndlp->nlp_defer_did,
1082                                  ndlp->nlp_flag, ndlp);
1083                 return;
1084         }
1085
1086         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1087                         GFP_KERNEL);
1088         if (!pmb)
1089                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1090                                  "2796 mailbox memory allocation failed \n");
1091         else {
1092                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1093                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1094                 pmb->vport = vport;
1095                 pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
1096                 if (!pmb->ctx_ndlp) {
1097                         mempool_free(pmb, phba->mbox_mem_pool);
1098                         return;
1099                 }
1100
1101                 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1102                     (!(vport->fc_flag & FC_OFFLINE_MODE)))
1103                         ndlp->nlp_flag |= NLP_UNREG_INP;
1104
1105                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1106                                  "1437 release_rpi UNREG x%x "
1107                                  "on NPort x%x flg x%x\n",
1108                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1109
1110                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1111                 if (rc == MBX_NOT_FINISHED) {
1112                         lpfc_nlp_put(ndlp);
1113                         mempool_free(pmb, phba->mbox_mem_pool);
1114                 }
1115         }
1116 }
1117
1118 static uint32_t
1119 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1120                   void *arg, uint32_t evt)
1121 {
1122         struct lpfc_hba *phba;
1123         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1124         uint16_t rpi;
1125
1126         phba = vport->phba;
1127         /* Release the RPI if reglogin completing */
1128         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1129                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1130                 (!pmb->u.mb.mbxStatus)) {
1131                 rpi = pmb->u.mb.un.varWords[0];
1132                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1133         }
1134         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1135                          "0271 Illegal State Transition: node x%x "
1136                          "event x%x, state x%x Data: x%x x%x\n",
1137                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1138                          ndlp->nlp_flag);
1139         return ndlp->nlp_state;
1140 }
1141
1142 static uint32_t
1143 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1144                   void *arg, uint32_t evt)
1145 {
1146         /* This transition is only legal if we previously
1147          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1148          * working on the same NPortID, do nothing for this thread
1149          * to stop it.
1150          */
1151         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1152                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1153                                  "0272 Illegal State Transition: node x%x "
1154                                  "event x%x, state x%x Data: x%x x%x\n",
1155                                   ndlp->nlp_DID, evt, ndlp->nlp_state,
1156                                   ndlp->nlp_rpi, ndlp->nlp_flag);
1157         }
1158         return ndlp->nlp_state;
1159 }
1160
1161 /* Start of Discovery State Machine routines */
1162
1163 static uint32_t
1164 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1165                            void *arg, uint32_t evt)
1166 {
1167         struct lpfc_iocbq *cmdiocb;
1168
1169         cmdiocb = (struct lpfc_iocbq *) arg;
1170
1171         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1172                 return ndlp->nlp_state;
1173         }
1174         return NLP_STE_FREED_NODE;
1175 }
1176
1177 static uint32_t
1178 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1179                          void *arg, uint32_t evt)
1180 {
1181         lpfc_issue_els_logo(vport, ndlp, 0);
1182         return ndlp->nlp_state;
1183 }
1184
1185 static uint32_t
1186 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1187                           void *arg, uint32_t evt)
1188 {
1189         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1190
1191         spin_lock_irq(&ndlp->lock);
1192         ndlp->nlp_flag |= NLP_LOGO_ACC;
1193         spin_unlock_irq(&ndlp->lock);
1194         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1195
1196         return ndlp->nlp_state;
1197 }
1198
1199 static uint32_t
1200 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1201                            void *arg, uint32_t evt)
1202 {
1203         return NLP_STE_FREED_NODE;
1204 }
1205
1206 static uint32_t
1207 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1208                            void *arg, uint32_t evt)
1209 {
1210         return NLP_STE_FREED_NODE;
1211 }
1212
1213 static uint32_t
1214 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1215                         struct lpfc_nodelist *ndlp,
1216                            void *arg, uint32_t evt)
1217 {
1218         return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1223                            void *arg, uint32_t evt)
1224 {
1225         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1226         struct lpfc_hba   *phba = vport->phba;
1227         struct lpfc_iocbq *cmdiocb = arg;
1228         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
1229         uint32_t *lp = (uint32_t *) pcmd->virt;
1230         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1231         struct ls_rjt stat;
1232         int port_cmp;
1233
1234         memset(&stat, 0, sizeof (struct ls_rjt));
1235
1236         /* For a PLOGI, we only accept if our portname is less
1237          * than the remote portname.
1238          */
1239         phba->fc_stat.elsLogiCol++;
1240         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1241                           sizeof(struct lpfc_name));
1242
1243         if (port_cmp >= 0) {
1244                 /* Reject this request because the remote node will accept
1245                    ours */
1246                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1247                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1248                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1249                         NULL);
1250         } else {
1251                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1252                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1253                     (vport->num_disc_nodes)) {
1254                         spin_lock_irq(&ndlp->lock);
1255                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1256                         spin_unlock_irq(&ndlp->lock);
1257                         /* Check if there are more PLOGIs to be sent */
1258                         lpfc_more_plogi(vport);
1259                         if (vport->num_disc_nodes == 0) {
1260                                 spin_lock_irq(shost->host_lock);
1261                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1262                                 spin_unlock_irq(shost->host_lock);
1263                                 lpfc_can_disctmo(vport);
1264                                 lpfc_end_rscn(vport);
1265                         }
1266                 }
1267         } /* If our portname was less */
1268
1269         return ndlp->nlp_state;
1270 }
1271
1272 static uint32_t
1273 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1274                           void *arg, uint32_t evt)
1275 {
1276         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1277         struct ls_rjt     stat;
1278
1279         memset(&stat, 0, sizeof (struct ls_rjt));
1280         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1281         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1282         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1283         return ndlp->nlp_state;
1284 }
1285
1286 static uint32_t
1287 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1288                           void *arg, uint32_t evt)
1289 {
1290         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1291
1292         /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1293         if (vport->phba->sli_rev == LPFC_SLI_REV3)
1294                 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1295                                 /* software abort outstanding PLOGI */
1296         lpfc_els_abort(vport->phba, ndlp);
1297
1298         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1299         return ndlp->nlp_state;
1300 }
1301
1302 static uint32_t
1303 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1304                          void *arg, uint32_t evt)
1305 {
1306         struct lpfc_hba   *phba = vport->phba;
1307         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1308
1309         /* software abort outstanding PLOGI */
1310         lpfc_els_abort(phba, ndlp);
1311
1312         if (evt == NLP_EVT_RCV_LOGO) {
1313                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1314         } else {
1315                 lpfc_issue_els_logo(vport, ndlp, 0);
1316         }
1317
1318         /* Put ndlp in npr state set plogi timer for 1 sec */
1319         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1320         spin_lock_irq(&ndlp->lock);
1321         ndlp->nlp_flag |= NLP_DELAY_TMO;
1322         spin_unlock_irq(&ndlp->lock);
1323         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1324         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1325         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1326
1327         return ndlp->nlp_state;
1328 }
1329
1330 static uint32_t
1331 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1332                             struct lpfc_nodelist *ndlp,
1333                             void *arg,
1334                             uint32_t evt)
1335 {
1336         struct lpfc_hba    *phba = vport->phba;
1337         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1338         struct lpfc_dmabuf *pcmd, *prsp;
1339         uint32_t *lp;
1340         uint32_t vid, flag;
1341         struct serv_parm *sp;
1342         uint32_t ed_tov;
1343         LPFC_MBOXQ_t *mbox;
1344         int rc;
1345         u32 ulp_status;
1346         u32 did;
1347
1348         cmdiocb = (struct lpfc_iocbq *) arg;
1349         rspiocb = cmdiocb->rsp_iocb;
1350
1351         ulp_status = get_job_ulpstatus(phba, rspiocb);
1352
1353         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1354                 /* Recovery from PLOGI collision logic */
1355                 return ndlp->nlp_state;
1356         }
1357
1358         if (ulp_status)
1359                 goto out;
1360
1361         pcmd = cmdiocb->cmd_dmabuf;
1362
1363         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1364         if (!prsp)
1365                 goto out;
1366
1367         lp = (uint32_t *) prsp->virt;
1368         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1369
1370         /* Some switches have FDMI servers returning 0 for WWN */
1371         if ((ndlp->nlp_DID != FDMI_DID) &&
1372                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1373                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1374                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1375                                  "0142 PLOGI RSP: Invalid WWN.\n");
1376                 goto out;
1377         }
1378         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1379                 goto out;
1380         /* PLOGI chkparm OK */
1381         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1382                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1383                          ndlp->nlp_DID, ndlp->nlp_state,
1384                          ndlp->nlp_flag, ndlp->nlp_rpi);
1385         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1386                 ndlp->nlp_fcp_info |= CLASS2;
1387         else
1388                 ndlp->nlp_fcp_info |= CLASS3;
1389
1390         ndlp->nlp_class_sup = 0;
1391         if (sp->cls1.classValid)
1392                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1393         if (sp->cls2.classValid)
1394                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1395         if (sp->cls3.classValid)
1396                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1397         if (sp->cls4.classValid)
1398                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1399         ndlp->nlp_maxframe =
1400                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1401
1402         if ((vport->fc_flag & FC_PT2PT) &&
1403             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1404                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1405                 if (sp->cmn.edtovResolution) {
1406                         /* E_D_TOV ticks are in nanoseconds */
1407                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1408                 }
1409
1410                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1411                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1412                     sp->cmn.valid_vendor_ver_level) {
1413                         vid = be32_to_cpu(sp->un.vv.vid);
1414                         flag = be32_to_cpu(sp->un.vv.flags);
1415                         if ((vid == LPFC_VV_EMLX_ID) &&
1416                             (flag & LPFC_VV_SUPPRESS_RSP))
1417                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1418                 }
1419
1420                 /*
1421                  * Use the larger EDTOV
1422                  * RATOV = 2 * EDTOV for pt-to-pt
1423                  */
1424                 if (ed_tov > phba->fc_edtov)
1425                         phba->fc_edtov = ed_tov;
1426                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1427
1428                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1429
1430                 /* Issue config_link / reg_vfi to account for updated TOV's */
1431                 if (phba->sli_rev == LPFC_SLI_REV4) {
1432                         lpfc_issue_reg_vfi(vport);
1433                 } else {
1434                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1435                         if (!mbox) {
1436                                 lpfc_printf_vlog(vport, KERN_ERR,
1437                                                  LOG_TRACE_EVENT,
1438                                                  "0133 PLOGI: no memory "
1439                                                  "for config_link "
1440                                                  "Data: x%x x%x x%x x%x\n",
1441                                                  ndlp->nlp_DID, ndlp->nlp_state,
1442                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1443                                 goto out;
1444                         }
1445
1446                         lpfc_config_link(phba, mbox);
1447
1448                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1449                         mbox->vport = vport;
1450                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1451                         if (rc == MBX_NOT_FINISHED) {
1452                                 mempool_free(mbox, phba->mbox_mem_pool);
1453                                 goto out;
1454                         }
1455                 }
1456         }
1457
1458         lpfc_unreg_rpi(vport, ndlp);
1459
1460         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1461         if (!mbox) {
1462                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1463                                  "0018 PLOGI: no memory for reg_login "
1464                                  "Data: x%x x%x x%x x%x\n",
1465                                  ndlp->nlp_DID, ndlp->nlp_state,
1466                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1467                 goto out;
1468         }
1469
1470         did = get_job_els_rsp64_did(phba, cmdiocb);
1471
1472         if (lpfc_reg_rpi(phba, vport->vpi, did,
1473                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1474                 switch (ndlp->nlp_DID) {
1475                 case NameServer_DID:
1476                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1477                         /* Fabric Controller Node needs these parameters. */
1478                         memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
1479                         break;
1480                 case FDMI_DID:
1481                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1482                         break;
1483                 default:
1484                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1485                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1486                 }
1487
1488                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1489                 if (!mbox->ctx_ndlp)
1490                         goto out;
1491
1492                 mbox->vport = vport;
1493                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1494                     != MBX_NOT_FINISHED) {
1495                         lpfc_nlp_set_state(vport, ndlp,
1496                                            NLP_STE_REG_LOGIN_ISSUE);
1497                         return ndlp->nlp_state;
1498                 }
1499                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1500                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1501                 /* decrement node reference count to the failed mbox
1502                  * command
1503                  */
1504                 lpfc_nlp_put(ndlp);
1505                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
1506                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1507                                  "0134 PLOGI: cannot issue reg_login "
1508                                  "Data: x%x x%x x%x x%x\n",
1509                                  ndlp->nlp_DID, ndlp->nlp_state,
1510                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1511         } else {
1512                 mempool_free(mbox, phba->mbox_mem_pool);
1513
1514                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1515                                  "0135 PLOGI: cannot format reg_login "
1516                                  "Data: x%x x%x x%x x%x\n",
1517                                  ndlp->nlp_DID, ndlp->nlp_state,
1518                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1519         }
1520
1521
1522 out:
1523         if (ndlp->nlp_DID == NameServer_DID) {
1524                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1525                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1526                                  "0261 Cannot Register NameServer login\n");
1527         }
1528
1529         /*
1530         ** In case the node reference counter does not go to zero, ensure that
1531         ** the stale state for the node is not processed.
1532         */
1533
1534         ndlp->nlp_prev_state = ndlp->nlp_state;
1535         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1536         return NLP_STE_FREED_NODE;
1537 }
1538
1539 static uint32_t
1540 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1541                            void *arg, uint32_t evt)
1542 {
1543         return ndlp->nlp_state;
1544 }
1545
1546 static uint32_t
1547 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1548         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1549 {
1550         struct lpfc_hba *phba;
1551         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1552         MAILBOX_t *mb = &pmb->u.mb;
1553         uint16_t rpi;
1554
1555         phba = vport->phba;
1556         /* Release the RPI */
1557         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1558                 !mb->mbxStatus) {
1559                 rpi = pmb->u.mb.un.varWords[0];
1560                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1561         }
1562         return ndlp->nlp_state;
1563 }
1564
1565 static uint32_t
1566 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1567                            void *arg, uint32_t evt)
1568 {
1569         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1570                 spin_lock_irq(&ndlp->lock);
1571                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1572                 spin_unlock_irq(&ndlp->lock);
1573                 return ndlp->nlp_state;
1574         } else {
1575                 /* software abort outstanding PLOGI */
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_plogi_issue(struct lpfc_vport *vport,
1585                               struct lpfc_nodelist *ndlp,
1586                               void *arg,
1587                               uint32_t evt)
1588 {
1589         struct lpfc_hba  *phba = vport->phba;
1590
1591         /* Don't do anything that will mess up processing of the
1592          * previous RSCN.
1593          */
1594         if (vport->fc_flag & FC_RSCN_DEFERRED)
1595                 return ndlp->nlp_state;
1596
1597         /* software abort outstanding PLOGI */
1598         lpfc_els_abort(phba, ndlp);
1599
1600         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1601         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1602         spin_lock_irq(&ndlp->lock);
1603         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1604         spin_unlock_irq(&ndlp->lock);
1605
1606         return ndlp->nlp_state;
1607 }
1608
1609 static uint32_t
1610 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1611                            void *arg, uint32_t evt)
1612 {
1613         struct lpfc_hba   *phba = vport->phba;
1614         struct lpfc_iocbq *cmdiocb;
1615
1616         /* software abort outstanding ADISC */
1617         lpfc_els_abort(phba, ndlp);
1618
1619         cmdiocb = (struct lpfc_iocbq *) arg;
1620
1621         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1622                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1623                         spin_lock_irq(&ndlp->lock);
1624                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1625                         spin_unlock_irq(&ndlp->lock);
1626                         if (vport->num_disc_nodes)
1627                                 lpfc_more_adisc(vport);
1628                 }
1629                 return ndlp->nlp_state;
1630         }
1631         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1632         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1633         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1634
1635         return ndlp->nlp_state;
1636 }
1637
1638 static uint32_t
1639 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1640                           void *arg, uint32_t evt)
1641 {
1642         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1643
1644         if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1645                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1646         return ndlp->nlp_state;
1647 }
1648
1649 static uint32_t
1650 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1651                           void *arg, uint32_t evt)
1652 {
1653         struct lpfc_hba *phba = vport->phba;
1654         struct lpfc_iocbq *cmdiocb;
1655
1656         cmdiocb = (struct lpfc_iocbq *) arg;
1657
1658         /* software abort outstanding ADISC */
1659         lpfc_els_abort(phba, ndlp);
1660
1661         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1662         return ndlp->nlp_state;
1663 }
1664
1665 static uint32_t
1666 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1667                             struct lpfc_nodelist *ndlp,
1668                             void *arg, uint32_t evt)
1669 {
1670         struct lpfc_iocbq *cmdiocb;
1671
1672         cmdiocb = (struct lpfc_iocbq *) arg;
1673
1674         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1675         return ndlp->nlp_state;
1676 }
1677
1678 static uint32_t
1679 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1680                           void *arg, uint32_t evt)
1681 {
1682         struct lpfc_iocbq *cmdiocb;
1683
1684         cmdiocb = (struct lpfc_iocbq *) arg;
1685
1686         /* Treat like rcv logo */
1687         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1688         return ndlp->nlp_state;
1689 }
1690
1691 static uint32_t
1692 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1693                             struct lpfc_nodelist *ndlp,
1694                             void *arg, uint32_t evt)
1695 {
1696         struct lpfc_hba   *phba = vport->phba;
1697         struct lpfc_iocbq *cmdiocb, *rspiocb;
1698         ADISC *ap;
1699         int rc;
1700         u32 ulp_status;
1701
1702         cmdiocb = (struct lpfc_iocbq *) arg;
1703         rspiocb = cmdiocb->rsp_iocb;
1704
1705         ulp_status = get_job_ulpstatus(phba, rspiocb);
1706
1707         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1708
1709         if ((ulp_status) ||
1710             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1711                 /* 1 sec timeout */
1712                 mod_timer(&ndlp->nlp_delayfunc,
1713                           jiffies + msecs_to_jiffies(1000));
1714                 spin_lock_irq(&ndlp->lock);
1715                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1716                 spin_unlock_irq(&ndlp->lock);
1717                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1718
1719                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1720                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1721                 lpfc_unreg_rpi(vport, ndlp);
1722                 return ndlp->nlp_state;
1723         }
1724
1725         if (phba->sli_rev == LPFC_SLI_REV4) {
1726                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1727                 if (rc) {
1728                         /* Stay in state and retry. */
1729                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1730                         return ndlp->nlp_state;
1731                 }
1732         }
1733
1734         if (ndlp->nlp_type & NLP_FCP_TARGET)
1735                 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1736
1737         if (ndlp->nlp_type & NLP_NVME_TARGET)
1738                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1739
1740         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1741                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1742                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1743         } else {
1744                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1745                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1746         }
1747
1748         return ndlp->nlp_state;
1749 }
1750
1751 static uint32_t
1752 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1753                            void *arg, uint32_t evt)
1754 {
1755         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1756                 spin_lock_irq(&ndlp->lock);
1757                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1758                 spin_unlock_irq(&ndlp->lock);
1759                 return ndlp->nlp_state;
1760         } else {
1761                 /* software abort outstanding ADISC */
1762                 lpfc_els_abort(vport->phba, ndlp);
1763
1764                 lpfc_drop_node(vport, ndlp);
1765                 return NLP_STE_FREED_NODE;
1766         }
1767 }
1768
1769 static uint32_t
1770 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1771                               struct lpfc_nodelist *ndlp,
1772                               void *arg,
1773                               uint32_t evt)
1774 {
1775         struct lpfc_hba  *phba = vport->phba;
1776
1777         /* Don't do anything that will mess up processing of the
1778          * previous RSCN.
1779          */
1780         if (vport->fc_flag & FC_RSCN_DEFERRED)
1781                 return ndlp->nlp_state;
1782
1783         /* software abort outstanding ADISC */
1784         lpfc_els_abort(phba, ndlp);
1785
1786         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1787         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1788         spin_lock_irq(&ndlp->lock);
1789         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1790         spin_unlock_irq(&ndlp->lock);
1791         lpfc_disc_set_adisc(vport, ndlp);
1792         return ndlp->nlp_state;
1793 }
1794
1795 static uint32_t
1796 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1797                               struct lpfc_nodelist *ndlp,
1798                               void *arg,
1799                               uint32_t evt)
1800 {
1801         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1802
1803         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1804         return ndlp->nlp_state;
1805 }
1806
1807 static uint32_t
1808 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1809                              struct lpfc_nodelist *ndlp,
1810                              void *arg,
1811                              uint32_t evt)
1812 {
1813         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1814         struct ls_rjt     stat;
1815
1816         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1817                 return ndlp->nlp_state;
1818         }
1819         if (vport->phba->nvmet_support) {
1820                 /* NVME Target mode.  Handle and respond to the PRLI and
1821                  * transition to UNMAPPED provided the RPI has completed
1822                  * registration.
1823                  */
1824                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1825                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1826                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1827                 } else {
1828                         /* RPI registration has not completed. Reject the PRLI
1829                          * to prevent an illegal state transition when the
1830                          * rpi registration does complete.
1831                          */
1832                         memset(&stat, 0, sizeof(struct ls_rjt));
1833                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1834                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1835                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1836                                             ndlp, NULL);
1837                         return ndlp->nlp_state;
1838                 }
1839         } else {
1840                 /* Initiator mode. */
1841                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1842         }
1843         return ndlp->nlp_state;
1844 }
1845
1846 static uint32_t
1847 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1848                              struct lpfc_nodelist *ndlp,
1849                              void *arg,
1850                              uint32_t evt)
1851 {
1852         struct lpfc_hba   *phba = vport->phba;
1853         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1854         LPFC_MBOXQ_t      *mb;
1855         LPFC_MBOXQ_t      *nextmb;
1856         struct lpfc_nodelist *ns_ndlp;
1857
1858         cmdiocb = (struct lpfc_iocbq *) arg;
1859
1860         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1861         if ((mb = phba->sli.mbox_active)) {
1862                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1863                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1864                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1865                         lpfc_nlp_put(ndlp);
1866                         mb->ctx_ndlp = NULL;
1867                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1868                 }
1869         }
1870
1871         spin_lock_irq(&phba->hbalock);
1872         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1873                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1874                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1875                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1876                         lpfc_nlp_put(ndlp);
1877                         list_del(&mb->list);
1878                         phba->sli.mboxq_cnt--;
1879                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
1880                 }
1881         }
1882         spin_unlock_irq(&phba->hbalock);
1883
1884         /* software abort if any GID_FT is outstanding */
1885         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1886                 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1887                 if (ns_ndlp)
1888                         lpfc_els_abort(phba, ns_ndlp);
1889         }
1890
1891         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1892         return ndlp->nlp_state;
1893 }
1894
1895 static uint32_t
1896 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1897                                struct lpfc_nodelist *ndlp,
1898                                void *arg,
1899                                uint32_t evt)
1900 {
1901         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1902
1903         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1904         return ndlp->nlp_state;
1905 }
1906
1907 static uint32_t
1908 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1909                              struct lpfc_nodelist *ndlp,
1910                              void *arg,
1911                              uint32_t evt)
1912 {
1913         struct lpfc_iocbq *cmdiocb;
1914
1915         cmdiocb = (struct lpfc_iocbq *) arg;
1916         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1917         return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1922                                   struct lpfc_nodelist *ndlp,
1923                                   void *arg,
1924                                   uint32_t evt)
1925 {
1926         struct lpfc_hba *phba = vport->phba;
1927         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1928         MAILBOX_t *mb = &pmb->u.mb;
1929         uint32_t did  = mb->un.varWords[1];
1930
1931         if (mb->mbxStatus) {
1932                 /* RegLogin failed */
1933                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1934                                  "0246 RegLogin failed Data: x%x x%x x%x x%x "
1935                                  "x%x\n",
1936                                  did, mb->mbxStatus, vport->port_state,
1937                                  mb->un.varRegLogin.vpi,
1938                                  mb->un.varRegLogin.rpi);
1939                 /*
1940                  * If RegLogin failed due to lack of HBA resources do not
1941                  * retry discovery.
1942                  */
1943                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1944                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1945                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1946                         return ndlp->nlp_state;
1947                 }
1948
1949                 /* Put ndlp in npr state set plogi timer for 1 sec */
1950                 mod_timer(&ndlp->nlp_delayfunc,
1951                           jiffies + msecs_to_jiffies(1000 * 1));
1952                 spin_lock_irq(&ndlp->lock);
1953                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1954                 spin_unlock_irq(&ndlp->lock);
1955                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1956
1957                 lpfc_issue_els_logo(vport, ndlp, 0);
1958                 return ndlp->nlp_state;
1959         }
1960
1961         /* SLI4 ports have preallocated logical rpis. */
1962         if (phba->sli_rev < LPFC_SLI_REV4)
1963                 ndlp->nlp_rpi = mb->un.varWords[0];
1964
1965         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1966
1967         /* Only if we are not a fabric nport do we issue PRLI */
1968         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1969                          "3066 RegLogin Complete on x%x x%x x%x\n",
1970                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1971         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1972             (phba->nvmet_support == 0)) {
1973                 /* The driver supports FCP and NVME concurrently.  If the
1974                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1975                  * know what PRLI to send yet.  Figure that out now and
1976                  * call PRLI depending on the outcome.
1977                  */
1978                 if (vport->fc_flag & FC_PT2PT) {
1979                         /* If we are pt2pt, there is no Fabric to determine
1980                          * the FC4 type of the remote nport. So if NVME
1981                          * is configured try it.
1982                          */
1983                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1984                         if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
1985                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
1986                             vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1987                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1988                                 /* We need to update the localport also */
1989                                 lpfc_nvme_update_localport(vport);
1990                         }
1991
1992                 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1993                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1994
1995                 } else if (ndlp->nlp_fc4_type == 0) {
1996                         /* If we are only configured for FCP, the driver
1997                          * should just issue PRLI for FCP. Otherwise issue
1998                          * GFT_ID to determine if remote port supports NVME.
1999                          */
2000                         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
2001                                 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
2002                                             ndlp->nlp_DID);
2003                                 return ndlp->nlp_state;
2004                         }
2005                         ndlp->nlp_fc4_type = NLP_FC4_FCP;
2006                 }
2007
2008                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2009                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2010                 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
2011                         lpfc_issue_els_logo(vport, ndlp, 0);
2012                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2013                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2014                 }
2015         } else {
2016                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
2017                         phba->targetport->port_id = vport->fc_myDID;
2018
2019                 /* Only Fabric ports should transition. NVME target
2020                  * must complete PRLI.
2021                  */
2022                 if (ndlp->nlp_type & NLP_FABRIC) {
2023                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2024                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2025                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2026                 }
2027         }
2028         return ndlp->nlp_state;
2029 }
2030
2031 static uint32_t
2032 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2033                               struct lpfc_nodelist *ndlp,
2034                               void *arg,
2035                               uint32_t evt)
2036 {
2037         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2038                 spin_lock_irq(&ndlp->lock);
2039                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2040                 spin_unlock_irq(&ndlp->lock);
2041                 return ndlp->nlp_state;
2042         } else {
2043                 lpfc_drop_node(vport, ndlp);
2044                 return NLP_STE_FREED_NODE;
2045         }
2046 }
2047
2048 static uint32_t
2049 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2050                                  struct lpfc_nodelist *ndlp,
2051                                  void *arg,
2052                                  uint32_t evt)
2053 {
2054         /* Don't do anything that will mess up processing of the
2055          * previous RSCN.
2056          */
2057         if (vport->fc_flag & FC_RSCN_DEFERRED)
2058                 return ndlp->nlp_state;
2059
2060         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2061         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2062         spin_lock_irq(&ndlp->lock);
2063
2064         /* If we are a target we won't immediately transition into PRLI,
2065          * so if REG_LOGIN already completed we don't need to ignore it.
2066          */
2067         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2068             !vport->phba->nvmet_support)
2069                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2070
2071         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2072         spin_unlock_irq(&ndlp->lock);
2073         lpfc_disc_set_adisc(vport, ndlp);
2074         return ndlp->nlp_state;
2075 }
2076
2077 static uint32_t
2078 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2079                           void *arg, uint32_t evt)
2080 {
2081         struct lpfc_iocbq *cmdiocb;
2082
2083         cmdiocb = (struct lpfc_iocbq *) arg;
2084
2085         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2086         return ndlp->nlp_state;
2087 }
2088
2089 static uint32_t
2090 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2091                          void *arg, uint32_t evt)
2092 {
2093         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2094
2095         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2096                 return ndlp->nlp_state;
2097         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2098         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2099         return ndlp->nlp_state;
2100 }
2101
2102 static uint32_t
2103 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2104                          void *arg, uint32_t evt)
2105 {
2106         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2107
2108         /* Software abort outstanding PRLI before sending acc */
2109         lpfc_els_abort(vport->phba, ndlp);
2110
2111         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2112         return ndlp->nlp_state;
2113 }
2114
2115 static uint32_t
2116 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2117                            void *arg, uint32_t evt)
2118 {
2119         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2120
2121         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2122         return ndlp->nlp_state;
2123 }
2124
2125 /* This routine is envoked when we rcv a PRLO request from a nport
2126  * we are logged into.  We should send back a PRLO rsp setting the
2127  * appropriate bits.
2128  * NEXT STATE = PRLI_ISSUE
2129  */
2130 static uint32_t
2131 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2132                          void *arg, uint32_t evt)
2133 {
2134         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2135
2136         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2137         return ndlp->nlp_state;
2138 }
2139
2140 static uint32_t
2141 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2142                           void *arg, uint32_t evt)
2143 {
2144         struct lpfc_iocbq *cmdiocb, *rspiocb;
2145         struct lpfc_hba   *phba = vport->phba;
2146         PRLI *npr;
2147         struct lpfc_nvme_prli *nvpr;
2148         void *temp_ptr;
2149         u32 ulp_status;
2150
2151         cmdiocb = (struct lpfc_iocbq *) arg;
2152         rspiocb = cmdiocb->rsp_iocb;
2153
2154         ulp_status = get_job_ulpstatus(phba, rspiocb);
2155
2156         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
2157          * format is different so NULL the two PRLI types so that the
2158          * driver correctly gets the correct context.
2159          */
2160         npr = NULL;
2161         nvpr = NULL;
2162         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2163         if (cmdiocb->cmd_flag & LPFC_PRLI_FCP_REQ)
2164                 npr = (PRLI *) temp_ptr;
2165         else if (cmdiocb->cmd_flag & LPFC_PRLI_NVME_REQ)
2166                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2167
2168         if (ulp_status) {
2169                 if ((vport->port_type == LPFC_NPIV_PORT) &&
2170                     vport->cfg_restrict_login) {
2171                         goto out;
2172                 }
2173
2174                 /* Adjust the nlp_type accordingly if the PRLI failed */
2175                 if (npr)
2176                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2177                 if (nvpr)
2178                         ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2179
2180                 /* We can't set the DSM state till BOTH PRLIs complete */
2181                 goto out_err;
2182         }
2183
2184         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2185             (npr->prliType == PRLI_FCP_TYPE)) {
2186                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2187                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2188                                  npr->initiatorFunc,
2189                                  npr->targetFunc);
2190                 if (npr->initiatorFunc)
2191                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
2192                 if (npr->targetFunc) {
2193                         ndlp->nlp_type |= NLP_FCP_TARGET;
2194                         if (npr->writeXferRdyDis)
2195                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2196                 }
2197                 if (npr->Retry)
2198                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2199
2200         } else if (nvpr &&
2201                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2202                     PRLI_REQ_EXECUTED) &&
2203                    (bf_get_be32(prli_type_code, nvpr) ==
2204                     PRLI_NVME_TYPE)) {
2205
2206                 /* Complete setting up the remote ndlp personality. */
2207                 if (bf_get_be32(prli_init, nvpr))
2208                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
2209
2210                 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2211                     bf_get_be32(prli_conf, nvpr))
2212
2213                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2214                 else
2215                         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2216
2217                 /* Target driver cannot solicit NVME FB. */
2218                 if (bf_get_be32(prli_tgt, nvpr)) {
2219                         /* Complete the nvme target roles.  The transport
2220                          * needs to know if the rport is capable of
2221                          * discovery in addition to its role.
2222                          */
2223                         ndlp->nlp_type |= NLP_NVME_TARGET;
2224                         if (bf_get_be32(prli_disc, nvpr))
2225                                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2226
2227                         /*
2228                          * If prli_fba is set, the Target supports FirstBurst.
2229                          * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2230                          * otherwise it defines the actual size supported by
2231                          * the NVME Target.
2232                          */
2233                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2234                             (phba->cfg_nvme_enable_fb) &&
2235                             (!phba->nvmet_support)) {
2236                                 /* Both sides support FB. The target's first
2237                                  * burst size is a 512 byte encoded value.
2238                                  */
2239                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2240                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2241                                                                  nvpr);
2242
2243                                 /* Expressed in units of 512 bytes */
2244                                 if (ndlp->nvme_fb_size)
2245                                         ndlp->nvme_fb_size <<=
2246                                                 LPFC_NVME_FB_SHIFT;
2247                                 else
2248                                         ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2249                         }
2250                 }
2251
2252                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2253                                  "6029 NVME PRLI Cmpl w1 x%08x "
2254                                  "w4 x%08x w5 x%08x flag x%x, "
2255                                  "fcp_info x%x nlp_type x%x\n",
2256                                  be32_to_cpu(nvpr->word1),
2257                                  be32_to_cpu(nvpr->word4),
2258                                  be32_to_cpu(nvpr->word5),
2259                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
2260                                  ndlp->nlp_type);
2261         }
2262         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2263             (vport->port_type == LPFC_NPIV_PORT) &&
2264              vport->cfg_restrict_login) {
2265 out:
2266                 spin_lock_irq(&ndlp->lock);
2267                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2268                 spin_unlock_irq(&ndlp->lock);
2269                 lpfc_issue_els_logo(vport, ndlp, 0);
2270
2271                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2272                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2273                 return ndlp->nlp_state;
2274         }
2275
2276 out_err:
2277         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2278          * are complete.
2279          */
2280         if (ndlp->fc4_prli_sent == 0) {
2281                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2282                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2283                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2284                 else if (ndlp->nlp_type &
2285                          (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2286                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2287         } else
2288                 lpfc_printf_vlog(vport,
2289                                  KERN_INFO, LOG_ELS,
2290                                  "3067 PRLI's still outstanding "
2291                                  "on x%06x - count %d, Pend Node Mode "
2292                                  "transition...\n",
2293                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2294
2295         return ndlp->nlp_state;
2296 }
2297
2298 /*! lpfc_device_rm_prli_issue
2299  *
2300  * \pre
2301  * \post
2302  * \param   phba
2303  * \param   ndlp
2304  * \param   arg
2305  * \param   evt
2306  * \return  uint32_t
2307  *
2308  * \b Description:
2309  *    This routine is envoked when we a request to remove a nport we are in the
2310  *    process of PRLIing. We should software abort outstanding prli, unreg
2311  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2312  *    on plogi list so it can be freed when LOGO completes.
2313  *
2314  */
2315
2316 static uint32_t
2317 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2318                           void *arg, uint32_t evt)
2319 {
2320         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2321                 spin_lock_irq(&ndlp->lock);
2322                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2323                 spin_unlock_irq(&ndlp->lock);
2324                 return ndlp->nlp_state;
2325         } else {
2326                 /* software abort outstanding PLOGI */
2327                 lpfc_els_abort(vport->phba, ndlp);
2328
2329                 lpfc_drop_node(vport, ndlp);
2330                 return NLP_STE_FREED_NODE;
2331         }
2332 }
2333
2334
2335 /*! lpfc_device_recov_prli_issue
2336  *
2337  * \pre
2338  * \post
2339  * \param   phba
2340  * \param   ndlp
2341  * \param   arg
2342  * \param   evt
2343  * \return  uint32_t
2344  *
2345  * \b Description:
2346  *    The routine is envoked when the state of a device is unknown, like
2347  *    during a link down. We should remove the nodelist entry from the
2348  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2349  *    outstanding PRLI command, then free the node entry.
2350  */
2351 static uint32_t
2352 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2353                              struct lpfc_nodelist *ndlp,
2354                              void *arg,
2355                              uint32_t evt)
2356 {
2357         struct lpfc_hba  *phba = vport->phba;
2358
2359         /* Don't do anything that will mess up processing of the
2360          * previous RSCN.
2361          */
2362         if (vport->fc_flag & FC_RSCN_DEFERRED)
2363                 return ndlp->nlp_state;
2364
2365         /* software abort outstanding PRLI */
2366         lpfc_els_abort(phba, ndlp);
2367
2368         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2369         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2370         spin_lock_irq(&ndlp->lock);
2371         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2372         spin_unlock_irq(&ndlp->lock);
2373         lpfc_disc_set_adisc(vport, ndlp);
2374         return ndlp->nlp_state;
2375 }
2376
2377 static uint32_t
2378 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2379                           void *arg, uint32_t evt)
2380 {
2381         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2382         struct ls_rjt     stat;
2383
2384         memset(&stat, 0, sizeof(struct ls_rjt));
2385         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2386         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2387         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2388         return ndlp->nlp_state;
2389 }
2390
2391 static uint32_t
2392 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2393                          void *arg, uint32_t evt)
2394 {
2395         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2396         struct ls_rjt     stat;
2397
2398         memset(&stat, 0, sizeof(struct ls_rjt));
2399         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2400         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2401         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2402         return ndlp->nlp_state;
2403 }
2404
2405 static uint32_t
2406 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2407                          void *arg, uint32_t evt)
2408 {
2409         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2410
2411         spin_lock_irq(&ndlp->lock);
2412         ndlp->nlp_flag |= NLP_LOGO_ACC;
2413         spin_unlock_irq(&ndlp->lock);
2414         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2415         return ndlp->nlp_state;
2416 }
2417
2418 static uint32_t
2419 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2420                            void *arg, uint32_t evt)
2421 {
2422         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2423         struct ls_rjt     stat;
2424
2425         memset(&stat, 0, sizeof(struct ls_rjt));
2426         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2427         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2428         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2429         return ndlp->nlp_state;
2430 }
2431
2432 static uint32_t
2433 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2434                          void *arg, uint32_t evt)
2435 {
2436         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2437         struct ls_rjt     stat;
2438
2439         memset(&stat, 0, sizeof(struct ls_rjt));
2440         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2441         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2442         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2443         return ndlp->nlp_state;
2444 }
2445
2446 static uint32_t
2447 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2448                           void *arg, uint32_t evt)
2449 {
2450         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2451         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2452         spin_lock_irq(&ndlp->lock);
2453         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2454         spin_unlock_irq(&ndlp->lock);
2455         lpfc_disc_set_adisc(vport, ndlp);
2456         return ndlp->nlp_state;
2457 }
2458
2459 static uint32_t
2460 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2461                           void *arg, uint32_t evt)
2462 {
2463         /*
2464          * DevLoss has timed out and is calling for Device Remove.
2465          * In this case, abort the LOGO and cleanup the ndlp
2466          */
2467
2468         lpfc_unreg_rpi(vport, ndlp);
2469         /* software abort outstanding PLOGI */
2470         lpfc_els_abort(vport->phba, ndlp);
2471         lpfc_drop_node(vport, ndlp);
2472         return NLP_STE_FREED_NODE;
2473 }
2474
2475 static uint32_t
2476 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2477                              struct lpfc_nodelist *ndlp,
2478                              void *arg, uint32_t evt)
2479 {
2480         /*
2481          * Device Recovery events have no meaning for a node with a LOGO
2482          * outstanding.  The LOGO has to complete first and handle the
2483          * node from that point.
2484          */
2485         return ndlp->nlp_state;
2486 }
2487
2488 static uint32_t
2489 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2490                           void *arg, uint32_t evt)
2491 {
2492         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2493
2494         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2495         return ndlp->nlp_state;
2496 }
2497
2498 static uint32_t
2499 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2500                          void *arg, uint32_t evt)
2501 {
2502         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2503
2504         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2505                 return ndlp->nlp_state;
2506
2507         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2508         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2509         return ndlp->nlp_state;
2510 }
2511
2512 static uint32_t
2513 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2514                          void *arg, uint32_t evt)
2515 {
2516         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2517
2518         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2519         return ndlp->nlp_state;
2520 }
2521
2522 static uint32_t
2523 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2524                            void *arg, uint32_t evt)
2525 {
2526         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2527
2528         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2529         return ndlp->nlp_state;
2530 }
2531
2532 static uint32_t
2533 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2534                          void *arg, uint32_t evt)
2535 {
2536         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2537
2538         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2539         return ndlp->nlp_state;
2540 }
2541
2542 static uint32_t
2543 lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
2544                           struct lpfc_nodelist *ndlp,
2545                           void *arg,
2546                           uint32_t evt)
2547 {
2548         lpfc_drop_node(vport, ndlp);
2549         return NLP_STE_FREED_NODE;
2550 }
2551
2552 static uint32_t
2553 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2554                              struct lpfc_nodelist *ndlp,
2555                              void *arg,
2556                              uint32_t evt)
2557 {
2558         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2559         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2560         spin_lock_irq(&ndlp->lock);
2561         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2562         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2563         spin_unlock_irq(&ndlp->lock);
2564         lpfc_disc_set_adisc(vport, ndlp);
2565
2566         return ndlp->nlp_state;
2567 }
2568
2569 static uint32_t
2570 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2571                            void *arg, uint32_t evt)
2572 {
2573         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2574
2575         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2576         return ndlp->nlp_state;
2577 }
2578
2579 static uint32_t
2580 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2581                           void *arg, uint32_t evt)
2582 {
2583         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2584
2585         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2586                 return ndlp->nlp_state;
2587         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2588         return ndlp->nlp_state;
2589 }
2590
2591 static uint32_t
2592 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2593                           void *arg, uint32_t evt)
2594 {
2595         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2596
2597         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2598         return ndlp->nlp_state;
2599 }
2600
2601 static uint32_t
2602 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2603                             struct lpfc_nodelist *ndlp,
2604                             void *arg, uint32_t evt)
2605 {
2606         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2607
2608         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2609         return ndlp->nlp_state;
2610 }
2611
2612 static uint32_t
2613 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2614                           void *arg, uint32_t evt)
2615 {
2616         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2617
2618         /* flush the target */
2619         lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2620
2621         /* Treat like rcv logo */
2622         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2623         return ndlp->nlp_state;
2624 }
2625
2626 static uint32_t
2627 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2628                               struct lpfc_nodelist *ndlp,
2629                               void *arg,
2630                               uint32_t evt)
2631 {
2632         lpfc_disc_set_adisc(vport, ndlp);
2633
2634         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2635         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2636         spin_lock_irq(&ndlp->lock);
2637         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2638         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2639         spin_unlock_irq(&ndlp->lock);
2640         return ndlp->nlp_state;
2641 }
2642
2643 static uint32_t
2644 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2645                         void *arg, uint32_t evt)
2646 {
2647         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2648
2649         /* Ignore PLOGI if we have an outstanding LOGO */
2650         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2651                 return ndlp->nlp_state;
2652         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2653                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2654                 spin_lock_irq(&ndlp->lock);
2655                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2656                 spin_unlock_irq(&ndlp->lock);
2657         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2658                 /* send PLOGI immediately, move to PLOGI issue state */
2659                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2660                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2661                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2662                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2663                 }
2664         }
2665         return ndlp->nlp_state;
2666 }
2667
2668 static uint32_t
2669 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2670                        void *arg, uint32_t evt)
2671 {
2672         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2673         struct ls_rjt     stat;
2674
2675         memset(&stat, 0, sizeof (struct ls_rjt));
2676         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2677         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2678         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2679
2680         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2681                 /*
2682                  * ADISC nodes will be handled in regular discovery path after
2683                  * receiving response from NS.
2684                  *
2685                  * For other nodes, Send PLOGI to trigger an implicit LOGO.
2686                  */
2687                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2688                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2689                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2690                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2691                 }
2692         }
2693         return ndlp->nlp_state;
2694 }
2695
2696 static uint32_t
2697 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2698                        void *arg, uint32_t evt)
2699 {
2700         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2701
2702         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2703         return ndlp->nlp_state;
2704 }
2705
2706 static uint32_t
2707 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2708                          void *arg, uint32_t evt)
2709 {
2710         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2711
2712         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2713         /*
2714          * Do not start discovery if discovery is about to start
2715          * or discovery in progress for this node. Starting discovery
2716          * here will affect the counting of discovery threads.
2717          */
2718         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2719             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2720                 /*
2721                  * ADISC nodes will be handled in regular discovery path after
2722                  * receiving response from NS.
2723                  *
2724                  * For other nodes, Send PLOGI to trigger an implicit LOGO.
2725                  */
2726                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2727                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2728                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2729                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2730                 }
2731         }
2732         return ndlp->nlp_state;
2733 }
2734
2735 static uint32_t
2736 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2737                        void *arg, uint32_t evt)
2738 {
2739         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2740
2741         spin_lock_irq(&ndlp->lock);
2742         ndlp->nlp_flag |= NLP_LOGO_ACC;
2743         spin_unlock_irq(&ndlp->lock);
2744
2745         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2746
2747         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2748                 mod_timer(&ndlp->nlp_delayfunc,
2749                           jiffies + msecs_to_jiffies(1000 * 1));
2750                 spin_lock_irq(&ndlp->lock);
2751                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2752                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2753                 spin_unlock_irq(&ndlp->lock);
2754                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2755         } else {
2756                 spin_lock_irq(&ndlp->lock);
2757                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2758                 spin_unlock_irq(&ndlp->lock);
2759         }
2760         return ndlp->nlp_state;
2761 }
2762
2763 static uint32_t
2764 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2765                          void *arg, uint32_t evt)
2766 {
2767         struct lpfc_hba *phba = vport->phba;
2768         struct lpfc_iocbq *cmdiocb, *rspiocb;
2769         u32 ulp_status;
2770
2771         cmdiocb = (struct lpfc_iocbq *) arg;
2772         rspiocb = cmdiocb->rsp_iocb;
2773
2774         ulp_status = get_job_ulpstatus(phba, rspiocb);
2775
2776         if (ulp_status)
2777                 return NLP_STE_FREED_NODE;
2778
2779         return ndlp->nlp_state;
2780 }
2781
2782 static uint32_t
2783 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2784                         void *arg, uint32_t evt)
2785 {
2786         struct lpfc_hba *phba = vport->phba;
2787         struct lpfc_iocbq *cmdiocb, *rspiocb;
2788         u32 ulp_status;
2789
2790         cmdiocb = (struct lpfc_iocbq *) arg;
2791         rspiocb = cmdiocb->rsp_iocb;
2792
2793         ulp_status = get_job_ulpstatus(phba, rspiocb);
2794
2795         if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2796                 lpfc_drop_node(vport, ndlp);
2797                 return NLP_STE_FREED_NODE;
2798         }
2799         return ndlp->nlp_state;
2800 }
2801
2802 static uint32_t
2803 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2804                         void *arg, uint32_t evt)
2805 {
2806         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2807
2808         /* For the fabric port just clear the fc flags. */
2809         if (ndlp->nlp_DID == Fabric_DID) {
2810                 spin_lock_irq(shost->host_lock);
2811                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2812                 spin_unlock_irq(shost->host_lock);
2813         }
2814         lpfc_unreg_rpi(vport, ndlp);
2815         return ndlp->nlp_state;
2816 }
2817
2818 static uint32_t
2819 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2820                          void *arg, uint32_t evt)
2821 {
2822         struct lpfc_hba *phba = vport->phba;
2823         struct lpfc_iocbq *cmdiocb, *rspiocb;
2824         u32 ulp_status;
2825
2826         cmdiocb = (struct lpfc_iocbq *) arg;
2827         rspiocb = cmdiocb->rsp_iocb;
2828
2829         ulp_status = get_job_ulpstatus(phba, rspiocb);
2830
2831         if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2832                 lpfc_drop_node(vport, ndlp);
2833                 return NLP_STE_FREED_NODE;
2834         }
2835         return ndlp->nlp_state;
2836 }
2837
2838 static uint32_t
2839 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2840                             struct lpfc_nodelist *ndlp,
2841                             void *arg, uint32_t evt)
2842 {
2843         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2844         MAILBOX_t    *mb = &pmb->u.mb;
2845
2846         if (!mb->mbxStatus) {
2847                 /* SLI4 ports have preallocated logical rpis. */
2848                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2849                         ndlp->nlp_rpi = mb->un.varWords[0];
2850                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2851                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2852                         lpfc_unreg_rpi(vport, ndlp);
2853                 }
2854         } else {
2855                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2856                         lpfc_drop_node(vport, ndlp);
2857                         return NLP_STE_FREED_NODE;
2858                 }
2859         }
2860         return ndlp->nlp_state;
2861 }
2862
2863 static uint32_t
2864 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2865                         void *arg, uint32_t evt)
2866 {
2867         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2868                 spin_lock_irq(&ndlp->lock);
2869                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2870                 spin_unlock_irq(&ndlp->lock);
2871                 return ndlp->nlp_state;
2872         }
2873         lpfc_drop_node(vport, ndlp);
2874         return NLP_STE_FREED_NODE;
2875 }
2876
2877 static uint32_t
2878 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2879                            void *arg, uint32_t evt)
2880 {
2881         /* Don't do anything that will mess up processing of the
2882          * previous RSCN.
2883          */
2884         if (vport->fc_flag & FC_RSCN_DEFERRED)
2885                 return ndlp->nlp_state;
2886
2887         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2888         spin_lock_irq(&ndlp->lock);
2889         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2890         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2891         spin_unlock_irq(&ndlp->lock);
2892         return ndlp->nlp_state;
2893 }
2894
2895
2896 /* This next section defines the NPort Discovery State Machine */
2897
2898 /* There are 4 different double linked lists nodelist entries can reside on.
2899  * The plogi list and adisc list are used when Link Up discovery or RSCN
2900  * processing is needed. Each list holds the nodes that we will send PLOGI
2901  * or ADISC on. These lists will keep track of what nodes will be effected
2902  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2903  * The unmapped_list will contain all nodes that we have successfully logged
2904  * into at the Fibre Channel level. The mapped_list will contain all nodes
2905  * that are mapped FCP targets.
2906  */
2907 /*
2908  * The bind list is a list of undiscovered (potentially non-existent) nodes
2909  * that we have saved binding information on. This information is used when
2910  * nodes transition from the unmapped to the mapped list.
2911  */
2912 /* For UNUSED_NODE state, the node has just been allocated .
2913  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2914  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2915  * and put on the unmapped list. For ADISC processing, the node is taken off
2916  * the ADISC list and placed on either the mapped or unmapped list (depending
2917  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2918  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2919  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2920  * node, the node is taken off the unmapped list. The binding list is checked
2921  * for a valid binding, or a binding is automatically assigned. If binding
2922  * assignment is unsuccessful, the node is left on the unmapped list. If
2923  * binding assignment is successful, the associated binding list entry (if
2924  * any) is removed, and the node is placed on the mapped list.
2925  */
2926 /*
2927  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2928  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2929  * expire, all effected nodes will receive a DEVICE_RM event.
2930  */
2931 /*
2932  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2933  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2934  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2935  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2936  * we will first process the ADISC list.  32 entries are processed initially and
2937  * ADISC is initited for each one.  Completions / Events for each node are
2938  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2939  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2940  * waiting, and the ADISC list count is identically 0, then we are done. For
2941  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2942  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2943  * list.  32 entries are processed initially and PLOGI is initited for each one.
2944  * Completions / Events for each node are funnelled thru the state machine.  As
2945  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2946  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2947  * indentically 0, then we are done. We have now completed discovery / RSCN
2948  * handling. Upon completion, ALL nodes should be on either the mapped or
2949  * unmapped lists.
2950  */
2951
2952 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2953      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2954         /* Action routine                  Event       Current State  */
2955         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2956         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2957         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2958         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2959         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2960         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2961         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2962         lpfc_disc_illegal,              /* CMPL_PRLI       */
2963         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2964         lpfc_disc_illegal,              /* CMPL_ADISC      */
2965         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2966         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2967         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2968
2969         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2970         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2971         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2972         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2973         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2974         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2975         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2976         lpfc_disc_illegal,              /* CMPL_PRLI       */
2977         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2978         lpfc_disc_illegal,              /* CMPL_ADISC      */
2979         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2980         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2981         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2982
2983         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2984         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2985         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2986         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2987         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2988         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2989         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2990         lpfc_disc_illegal,              /* CMPL_PRLI       */
2991         lpfc_disc_illegal,              /* CMPL_LOGO       */
2992         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2993         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2994         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2995         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2996
2997         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2998         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2999         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
3000         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
3001         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
3002         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
3003         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3004         lpfc_disc_illegal,              /* CMPL_PRLI       */
3005         lpfc_disc_illegal,              /* CMPL_LOGO       */
3006         lpfc_disc_illegal,              /* CMPL_ADISC      */
3007         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
3008         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
3009         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
3010
3011         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
3012         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
3013         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
3014         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
3015         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
3016         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
3017         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3018         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
3019         lpfc_disc_illegal,              /* CMPL_LOGO       */
3020         lpfc_disc_illegal,              /* CMPL_ADISC      */
3021         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3022         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
3023         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
3024
3025         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
3026         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
3027         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
3028         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
3029         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
3030         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
3031         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3032         lpfc_disc_illegal,              /* CMPL_PRLI       */
3033         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
3034         lpfc_disc_illegal,              /* CMPL_ADISC      */
3035         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3036         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
3037         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
3038
3039         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
3040         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
3041         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
3042         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
3043         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
3044         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
3045         lpfc_disc_illegal,              /* CMPL_PLOGI      */
3046         lpfc_disc_illegal,              /* CMPL_PRLI       */
3047         lpfc_disc_illegal,              /* CMPL_LOGO       */
3048         lpfc_disc_illegal,              /* CMPL_ADISC      */
3049         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3050         lpfc_device_rm_unmap_node,      /* DEVICE_RM       */
3051         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
3052
3053         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
3054         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
3055         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
3056         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
3057         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
3058         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
3059         lpfc_disc_illegal,              /* CMPL_PLOGI      */
3060         lpfc_disc_illegal,              /* CMPL_PRLI       */
3061         lpfc_disc_illegal,              /* CMPL_LOGO       */
3062         lpfc_disc_illegal,              /* CMPL_ADISC      */
3063         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3064         lpfc_disc_illegal,              /* DEVICE_RM       */
3065         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
3066
3067         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
3068         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
3069         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
3070         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
3071         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
3072         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
3073         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
3074         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
3075         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
3076         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
3077         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
3078         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
3079         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
3080 };
3081
3082 int
3083 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3084                         void *arg, uint32_t evt)
3085 {
3086         uint32_t cur_state, rc;
3087         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3088                          uint32_t);
3089         uint32_t got_ndlp = 0;
3090         uint32_t data1;
3091
3092         if (lpfc_nlp_get(ndlp))
3093                 got_ndlp = 1;
3094
3095         cur_state = ndlp->nlp_state;
3096
3097         data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3098                 ((uint32_t)ndlp->nlp_type));
3099         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3100         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3101                          "0211 DSM in event x%x on NPort x%x in "
3102                          "state %d rpi x%x Data: x%x x%x\n",
3103                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3104                          ndlp->nlp_flag, data1);
3105
3106         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3107                  "DSM in:          evt:%d ste:%d did:x%x",
3108                 evt, cur_state, ndlp->nlp_DID);
3109
3110         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3111         rc = (func) (vport, ndlp, arg, evt);
3112
3113         /* DSM out state <rc> on NPort <nlp_DID> */
3114         if (got_ndlp) {
3115                 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3116                         ((uint32_t)ndlp->nlp_type));
3117                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3118                          "0212 DSM out state %d on NPort x%x "
3119                          "rpi x%x Data: x%x x%x\n",
3120                          rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3121                          data1);
3122
3123                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3124                         "DSM out:         ste:%d did:x%x flg:x%x",
3125                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
3126                 /* Decrement the ndlp reference count held for this function */
3127                 lpfc_nlp_put(ndlp);
3128         } else {
3129                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3130                         "0213 DSM out state %d on NPort free\n", rc);
3131
3132                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3133                         "DSM out:         ste:%d did:x%x flg:x%x",
3134                         rc, 0, 0);
3135         }
3136
3137         return rc;
3138 }