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                     vport->fc_flag & FC_PT2PT)
 839                         goto out;
 840                 lpfc_linkdown_port(vport);
 841                 spin_lock_irq(shost->host_lock);
 842                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 843                 spin_unlock_irq(shost->host_lock);
 844                 vports = lpfc_create_vport_work_array(phba);
 845                 if (vports) {
 846                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 847                                         i++) {
 848                                 if ((!(vports[i]->fc_flag &
 849                                         FC_VPORT_LOGO_RCVD)) &&
 850                                         (vports[i]->port_state > LPFC_FDISC)) {
 851                                         active_vlink_present = 1;
 852                                         break;
 853                                 }
 854                         }
 855                         lpfc_destroy_vport_work_array(phba, vports);
 856                 }
 857
 858                 /*
 859                  * Don't re-instantiate if vport is marked for deletion.
 860                  * If we are here first then vport_delete is going to wait
 861                  * for discovery to complete.
 862                  */
 863                 if (!(vport->load_flag & FC_UNLOADING) &&
 864                                         active_vlink_present) {
 865                         /*
 866                          * If there are other active VLinks present,
 867                          * re-instantiate the Vlink using FDISC.
 868                          */
 869                         mod_timer(&ndlp->nlp_delayfunc,
 870                                   jiffies + msecs_to_jiffies(1000));
 871                         spin_lock_irq(&ndlp->lock);
 872                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 873                         spin_unlock_irq(&ndlp->lock);
 874                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 875                         vport->port_state = LPFC_FDISC;
 876                 } else {
 877                         spin_lock_irq(shost->host_lock);
 878                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 879                         spin_unlock_irq(shost->host_lock);
 880                         lpfc_retry_pport_discovery(phba);
 881                 }
 882         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 883                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 884                 (ndlp->nlp_type & NLP_NVME_TARGET) ||
 885                 (vport->fc_flag & FC_PT2PT))) ||
 886                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 887                 /* Only try to re-login if this is NOT a Fabric Node
 888                  * AND the remote NPORT is a FCP/NVME Target or we
 889                  * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
 890                  * case for LOGO as a response to ADISC behavior.
 891                  */
 892                 mod_timer(&ndlp->nlp_delayfunc,
 893                           jiffies + msecs_to_jiffies(1000 * 1));
 894                 spin_lock_irq(&ndlp->lock);
 895                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 896                 spin_unlock_irq(&ndlp->lock);
 897
 898                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 899         }
 900 out:
 901         /* Unregister from backend, could have been skipped due to ADISC */
 902         lpfc_nlp_unreg_node(vport, ndlp);
 903
 904         ndlp->nlp_prev_state = ndlp->nlp_state;
 905         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 906
 907         spin_lock_irq(&ndlp->lock);
 908         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 909         spin_unlock_irq(&ndlp->lock);
 910         /* The driver has to wait until the ACC completes before it continues
 911          * processing the LOGO.  The action will resume in
 912          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 913          * unreg_login, the driver waits so the ACC does not get aborted.
 914          */
 915         return 0;
 916 }
 917
 918 static uint32_t
 919 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
 920                             struct lpfc_nodelist *ndlp,
 921                             struct lpfc_iocbq *cmdiocb)
 922 {
 923         struct ls_rjt stat;
 924         uint32_t *payload;
 925         uint32_t cmd;
 926
 927         payload = cmdiocb->cmd_dmabuf->virt;
 928         cmd = *payload;
 929         if (vport->phba->nvmet_support) {
 930                 /* Must be a NVME PRLI */
 931                 if (cmd ==  ELS_CMD_PRLI)
 932                         goto out;
 933         } else {
 934                 /* Initiator mode. */
 935                 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
 936                         goto out;
 937         }
 938         return 1;
 939 out:
 940         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
 941                          "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
 942                          "state x%x flags x%x\n",
 943                          cmd, ndlp->nlp_rpi, ndlp->nlp_state,
 944                          ndlp->nlp_flag);
 945         memset(&stat, 0, sizeof(struct ls_rjt));
 946         stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
 947         stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
 948         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 949                             ndlp, NULL);
 950         return 0;
 951 }
 952
 953 static void
 954 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 955               struct lpfc_iocbq *cmdiocb)
 956 {
 957         struct lpfc_hba  *phba = vport->phba;
 958         struct lpfc_dmabuf *pcmd;
 959         uint32_t *lp;
 960         PRLI *npr;
 961         struct fc_rport *rport = ndlp->rport;
 962         u32 roles;
 963
 964         pcmd = cmdiocb->cmd_dmabuf;
 965         lp = (uint32_t *)pcmd->virt;
 966         npr = (PRLI *)((uint8_t *)lp + sizeof(uint32_t));
 967
 968         if ((npr->prliType == PRLI_FCP_TYPE) ||
 969             (npr->prliType == PRLI_NVME_TYPE)) {
 970                 if (npr->initiatorFunc) {
 971                         if (npr->prliType == PRLI_FCP_TYPE)
 972                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 973                         if (npr->prliType == PRLI_NVME_TYPE)
 974                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 975                 }
 976                 if (npr->targetFunc) {
 977                         if (npr->prliType == PRLI_FCP_TYPE)
 978                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 979                         if (npr->prliType == PRLI_NVME_TYPE)
 980                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 981                         if (npr->writeXferRdyDis)
 982                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 983                 }
 984                 if (npr->Retry && ndlp->nlp_type &
 985                                         (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
 986                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 987
 988                 if (npr->Retry && phba->nsler &&
 989                     ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
 990                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
 991
 992
 993                 /* If this driver is in nvme target mode, set the ndlp's fc4
 994                  * type to NVME provided the PRLI response claims NVME FC4
 995                  * type.  Target mode does not issue gft_id so doesn't get
 996                  * the fc4 type set until now.
 997                  */
 998                 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
 999                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1000                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1001                 }
1002
1003                 /* Fabric Controllers send FCP PRLI as an initiator but should
1004                  * not get recognized as FCP type and registered with transport.
1005                  */
1006                 if (npr->prliType == PRLI_FCP_TYPE &&
1007                     !(ndlp->nlp_type & NLP_FABRIC))
1008                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1009         }
1010         if (rport) {
1011                 /* We need to update the rport role values */
1012                 roles = FC_RPORT_ROLE_UNKNOWN;
1013                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1014                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1015                 if (ndlp->nlp_type & NLP_FCP_TARGET)
1016                         roles |= FC_RPORT_ROLE_FCP_TARGET;
1017
1018                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1019                         "rport rolechg:   role:x%x did:x%x flg:x%x",
1020                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
1021
1022                 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1023                         fc_remote_port_rolechg(rport, roles);
1024         }
1025 }
1026
1027 static uint32_t
1028 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1029 {
1030         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1031                 spin_lock_irq(&ndlp->lock);
1032                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1033                 spin_unlock_irq(&ndlp->lock);
1034                 return 0;
1035         }
1036
1037         if (!(vport->fc_flag & FC_PT2PT)) {
1038                 /* Check config parameter use-adisc or FCP-2 */
1039                 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1040                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1041                      (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1042                         spin_lock_irq(&ndlp->lock);
1043                         ndlp->nlp_flag |= NLP_NPR_ADISC;
1044                         spin_unlock_irq(&ndlp->lock);
1045                         return 1;
1046                 }
1047         }
1048
1049         spin_lock_irq(&ndlp->lock);
1050         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1051         spin_unlock_irq(&ndlp->lock);
1052         lpfc_unreg_rpi(vport, ndlp);
1053         return 0;
1054 }
1055
1056 /**
1057  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1058  * @phba : Pointer to lpfc_hba structure.
1059  * @vport: Pointer to lpfc_vport structure.
1060  * @ndlp: Pointer to lpfc_nodelist structure.
1061  * @rpi  : rpi to be release.
1062  *
1063  * This function will send a unreg_login mailbox command to the firmware
1064  * to release a rpi.
1065  **/
1066 static void
1067 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1068                  struct lpfc_nodelist *ndlp, uint16_t rpi)
1069 {
1070         LPFC_MBOXQ_t *pmb;
1071         int rc;
1072
1073         /* If there is already an UNREG in progress for this ndlp,
1074          * no need to queue up another one.
1075          */
1076         if (ndlp->nlp_flag & NLP_UNREG_INP) {
1077                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1078                                  "1435 release_rpi SKIP UNREG x%x on "
1079                                  "NPort x%x deferred x%x  flg x%x "
1080                                  "Data: x%px\n",
1081                                  ndlp->nlp_rpi, ndlp->nlp_DID,
1082                                  ndlp->nlp_defer_did,
1083                                  ndlp->nlp_flag, ndlp);
1084                 return;
1085         }
1086
1087         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1088                         GFP_KERNEL);
1089         if (!pmb)
1090                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1091                                  "2796 mailbox memory allocation failed \n");
1092         else {
1093                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1094                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1095                 pmb->vport = vport;
1096                 pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
1097                 if (!pmb->ctx_ndlp) {
1098                         mempool_free(pmb, phba->mbox_mem_pool);
1099                         return;
1100                 }
1101
1102                 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1103                     (!(vport->fc_flag & FC_OFFLINE_MODE)))
1104                         ndlp->nlp_flag |= NLP_UNREG_INP;
1105
1106                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1107                                  "1437 release_rpi UNREG x%x "
1108                                  "on NPort x%x flg x%x\n",
1109                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1110
1111                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1112                 if (rc == MBX_NOT_FINISHED) {
1113                         lpfc_nlp_put(ndlp);
1114                         mempool_free(pmb, phba->mbox_mem_pool);
1115                 }
1116         }
1117 }
1118
1119 static uint32_t
1120 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1121                   void *arg, uint32_t evt)
1122 {
1123         struct lpfc_hba *phba;
1124         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1125         uint16_t rpi;
1126
1127         phba = vport->phba;
1128         /* Release the RPI if reglogin completing */
1129         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1130                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1131                 (!pmb->u.mb.mbxStatus)) {
1132                 rpi = pmb->u.mb.un.varWords[0];
1133                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1134         }
1135         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1136                          "0271 Illegal State Transition: node x%x "
1137                          "event x%x, state x%x Data: x%x x%x\n",
1138                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1139                          ndlp->nlp_flag);
1140         return ndlp->nlp_state;
1141 }
1142
1143 static uint32_t
1144 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1145                   void *arg, uint32_t evt)
1146 {
1147         /* This transition is only legal if we previously
1148          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1149          * working on the same NPortID, do nothing for this thread
1150          * to stop it.
1151          */
1152         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1153                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1154                                  "0272 Illegal State Transition: node x%x "
1155                                  "event x%x, state x%x Data: x%x x%x\n",
1156                                   ndlp->nlp_DID, evt, ndlp->nlp_state,
1157                                   ndlp->nlp_rpi, ndlp->nlp_flag);
1158         }
1159         return ndlp->nlp_state;
1160 }
1161
1162 /* Start of Discovery State Machine routines */
1163
1164 static uint32_t
1165 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1166                            void *arg, uint32_t evt)
1167 {
1168         struct lpfc_iocbq *cmdiocb;
1169
1170         cmdiocb = (struct lpfc_iocbq *) arg;
1171
1172         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1173                 return ndlp->nlp_state;
1174         }
1175         return NLP_STE_FREED_NODE;
1176 }
1177
1178 static uint32_t
1179 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1180                          void *arg, uint32_t evt)
1181 {
1182         lpfc_issue_els_logo(vport, ndlp, 0);
1183         return ndlp->nlp_state;
1184 }
1185
1186 static uint32_t
1187 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1188                           void *arg, uint32_t evt)
1189 {
1190         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1191
1192         spin_lock_irq(&ndlp->lock);
1193         ndlp->nlp_flag |= NLP_LOGO_ACC;
1194         spin_unlock_irq(&ndlp->lock);
1195         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1196
1197         return ndlp->nlp_state;
1198 }
1199
1200 static uint32_t
1201 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1202                            void *arg, uint32_t evt)
1203 {
1204         return NLP_STE_FREED_NODE;
1205 }
1206
1207 static uint32_t
1208 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1209                            void *arg, uint32_t evt)
1210 {
1211         return NLP_STE_FREED_NODE;
1212 }
1213
1214 static uint32_t
1215 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1216                         struct lpfc_nodelist *ndlp,
1217                            void *arg, uint32_t evt)
1218 {
1219         return ndlp->nlp_state;
1220 }
1221
1222 static uint32_t
1223 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1224                            void *arg, uint32_t evt)
1225 {
1226         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1227         struct lpfc_hba   *phba = vport->phba;
1228         struct lpfc_iocbq *cmdiocb = arg;
1229         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
1230         uint32_t *lp = (uint32_t *) pcmd->virt;
1231         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1232         struct ls_rjt stat;
1233         int port_cmp;
1234
1235         memset(&stat, 0, sizeof (struct ls_rjt));
1236
1237         /* For a PLOGI, we only accept if our portname is less
1238          * than the remote portname.
1239          */
1240         phba->fc_stat.elsLogiCol++;
1241         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1242                           sizeof(struct lpfc_name));
1243
1244         if (port_cmp >= 0) {
1245                 /* Reject this request because the remote node will accept
1246                    ours */
1247                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1248                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1249                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1250                         NULL);
1251         } else {
1252                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1253                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1254                     (vport->num_disc_nodes)) {
1255                         spin_lock_irq(&ndlp->lock);
1256                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1257                         spin_unlock_irq(&ndlp->lock);
1258                         /* Check if there are more PLOGIs to be sent */
1259                         lpfc_more_plogi(vport);
1260                         if (vport->num_disc_nodes == 0) {
1261                                 spin_lock_irq(shost->host_lock);
1262                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1263                                 spin_unlock_irq(shost->host_lock);
1264                                 lpfc_can_disctmo(vport);
1265                                 lpfc_end_rscn(vport);
1266                         }
1267                 }
1268         } /* If our portname was less */
1269
1270         return ndlp->nlp_state;
1271 }
1272
1273 static uint32_t
1274 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1275                           void *arg, uint32_t evt)
1276 {
1277         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1278         struct ls_rjt     stat;
1279
1280         memset(&stat, 0, sizeof (struct ls_rjt));
1281         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1282         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1283         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1284         return ndlp->nlp_state;
1285 }
1286
1287 static uint32_t
1288 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1289                           void *arg, uint32_t evt)
1290 {
1291         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1292
1293         /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1294         if (vport->phba->sli_rev == LPFC_SLI_REV3)
1295                 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1296                                 /* software abort outstanding PLOGI */
1297         lpfc_els_abort(vport->phba, ndlp);
1298
1299         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1300         return ndlp->nlp_state;
1301 }
1302
1303 static uint32_t
1304 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1305                          void *arg, uint32_t evt)
1306 {
1307         struct lpfc_hba   *phba = vport->phba;
1308         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1309
1310         /* software abort outstanding PLOGI */
1311         lpfc_els_abort(phba, ndlp);
1312
1313         if (evt == NLP_EVT_RCV_LOGO) {
1314                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1315         } else {
1316                 lpfc_issue_els_logo(vport, ndlp, 0);
1317         }
1318
1319         /* Put ndlp in npr state set plogi timer for 1 sec */
1320         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1321         spin_lock_irq(&ndlp->lock);
1322         ndlp->nlp_flag |= NLP_DELAY_TMO;
1323         spin_unlock_irq(&ndlp->lock);
1324         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1325         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1326         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1327
1328         return ndlp->nlp_state;
1329 }
1330
1331 static uint32_t
1332 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1333                             struct lpfc_nodelist *ndlp,
1334                             void *arg,
1335                             uint32_t evt)
1336 {
1337         struct lpfc_hba    *phba = vport->phba;
1338         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1339         struct lpfc_dmabuf *pcmd, *prsp;
1340         uint32_t *lp;
1341         uint32_t vid, flag;
1342         struct serv_parm *sp;
1343         uint32_t ed_tov;
1344         LPFC_MBOXQ_t *mbox;
1345         int rc;
1346         u32 ulp_status;
1347         u32 did;
1348
1349         cmdiocb = (struct lpfc_iocbq *) arg;
1350         rspiocb = cmdiocb->rsp_iocb;
1351
1352         ulp_status = get_job_ulpstatus(phba, rspiocb);
1353
1354         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1355                 /* Recovery from PLOGI collision logic */
1356                 return ndlp->nlp_state;
1357         }
1358
1359         if (ulp_status)
1360                 goto out;
1361
1362         pcmd = cmdiocb->cmd_dmabuf;
1363
1364         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1365         if (!prsp)
1366                 goto out;
1367
1368         lp = (uint32_t *) prsp->virt;
1369         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1370
1371         /* Some switches have FDMI servers returning 0 for WWN */
1372         if ((ndlp->nlp_DID != FDMI_DID) &&
1373                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1374                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1375                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1376                                  "0142 PLOGI RSP: Invalid WWN.\n");
1377                 goto out;
1378         }
1379         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1380                 goto out;
1381         /* PLOGI chkparm OK */
1382         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1383                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1384                          ndlp->nlp_DID, ndlp->nlp_state,
1385                          ndlp->nlp_flag, ndlp->nlp_rpi);
1386         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1387                 ndlp->nlp_fcp_info |= CLASS2;
1388         else
1389                 ndlp->nlp_fcp_info |= CLASS3;
1390
1391         ndlp->nlp_class_sup = 0;
1392         if (sp->cls1.classValid)
1393                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1394         if (sp->cls2.classValid)
1395                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1396         if (sp->cls3.classValid)
1397                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1398         if (sp->cls4.classValid)
1399                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1400         ndlp->nlp_maxframe =
1401                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1402
1403         if ((vport->fc_flag & FC_PT2PT) &&
1404             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1405                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1406                 if (sp->cmn.edtovResolution) {
1407                         /* E_D_TOV ticks are in nanoseconds */
1408                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1409                 }
1410
1411                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1412                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1413                     sp->cmn.valid_vendor_ver_level) {
1414                         vid = be32_to_cpu(sp->un.vv.vid);
1415                         flag = be32_to_cpu(sp->un.vv.flags);
1416                         if ((vid == LPFC_VV_EMLX_ID) &&
1417                             (flag & LPFC_VV_SUPPRESS_RSP))
1418                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1419                 }
1420
1421                 /*
1422                  * Use the larger EDTOV
1423                  * RATOV = 2 * EDTOV for pt-to-pt
1424                  */
1425                 if (ed_tov > phba->fc_edtov)
1426                         phba->fc_edtov = ed_tov;
1427                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1428
1429                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1430
1431                 /* Issue config_link / reg_vfi to account for updated TOV's */
1432                 if (phba->sli_rev == LPFC_SLI_REV4) {
1433                         lpfc_issue_reg_vfi(vport);
1434                 } else {
1435                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1436                         if (!mbox) {
1437                                 lpfc_printf_vlog(vport, KERN_ERR,
1438                                                  LOG_TRACE_EVENT,
1439                                                  "0133 PLOGI: no memory "
1440                                                  "for config_link "
1441                                                  "Data: x%x x%x x%x x%x\n",
1442                                                  ndlp->nlp_DID, ndlp->nlp_state,
1443                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1444                                 goto out;
1445                         }
1446
1447                         lpfc_config_link(phba, mbox);
1448
1449                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1450                         mbox->vport = vport;
1451                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1452                         if (rc == MBX_NOT_FINISHED) {
1453                                 mempool_free(mbox, phba->mbox_mem_pool);
1454                                 goto out;
1455                         }
1456                 }
1457         }
1458
1459         lpfc_unreg_rpi(vport, ndlp);
1460
1461         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1462         if (!mbox) {
1463                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1464                                  "0018 PLOGI: no memory for reg_login "
1465                                  "Data: x%x x%x x%x x%x\n",
1466                                  ndlp->nlp_DID, ndlp->nlp_state,
1467                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1468                 goto out;
1469         }
1470
1471         did = get_job_els_rsp64_did(phba, cmdiocb);
1472
1473         if (lpfc_reg_rpi(phba, vport->vpi, did,
1474                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1475                 switch (ndlp->nlp_DID) {
1476                 case NameServer_DID:
1477                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1478                         /* Fabric Controller Node needs these parameters. */
1479                         memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
1480                         break;
1481                 case FDMI_DID:
1482                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1483                         break;
1484                 default:
1485                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1486                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1487                 }
1488
1489                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1490                 if (!mbox->ctx_ndlp)
1491                         goto out;
1492
1493                 mbox->vport = vport;
1494                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1495                     != MBX_NOT_FINISHED) {
1496                         lpfc_nlp_set_state(vport, ndlp,
1497                                            NLP_STE_REG_LOGIN_ISSUE);
1498                         return ndlp->nlp_state;
1499                 }
1500                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1501                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1502                 /* decrement node reference count to the failed mbox
1503                  * command
1504                  */
1505                 lpfc_nlp_put(ndlp);
1506                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
1507                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1508                                  "0134 PLOGI: cannot issue reg_login "
1509                                  "Data: x%x x%x x%x x%x\n",
1510                                  ndlp->nlp_DID, ndlp->nlp_state,
1511                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1512         } else {
1513                 mempool_free(mbox, phba->mbox_mem_pool);
1514
1515                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1516                                  "0135 PLOGI: cannot format reg_login "
1517                                  "Data: x%x x%x x%x x%x\n",
1518                                  ndlp->nlp_DID, ndlp->nlp_state,
1519                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1520         }
1521
1522
1523 out:
1524         if (ndlp->nlp_DID == NameServer_DID) {
1525                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1526                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1527                                  "0261 Cannot Register NameServer login\n");
1528         }
1529
1530         /*
1531         ** In case the node reference counter does not go to zero, ensure that
1532         ** the stale state for the node is not processed.
1533         */
1534
1535         ndlp->nlp_prev_state = ndlp->nlp_state;
1536         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1537         return NLP_STE_FREED_NODE;
1538 }
1539
1540 static uint32_t
1541 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1542                            void *arg, uint32_t evt)
1543 {
1544         return ndlp->nlp_state;
1545 }
1546
1547 static uint32_t
1548 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1549         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1550 {
1551         struct lpfc_hba *phba;
1552         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1553         MAILBOX_t *mb = &pmb->u.mb;
1554         uint16_t rpi;
1555
1556         phba = vport->phba;
1557         /* Release the RPI */
1558         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1559                 !mb->mbxStatus) {
1560                 rpi = pmb->u.mb.un.varWords[0];
1561                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1562         }
1563         return ndlp->nlp_state;
1564 }
1565
1566 static uint32_t
1567 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1568                            void *arg, uint32_t evt)
1569 {
1570         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1571                 spin_lock_irq(&ndlp->lock);
1572                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1573                 spin_unlock_irq(&ndlp->lock);
1574                 return ndlp->nlp_state;
1575         } else {
1576                 /* software abort outstanding PLOGI */
1577                 lpfc_els_abort(vport->phba, ndlp);
1578
1579                 lpfc_drop_node(vport, ndlp);
1580                 return NLP_STE_FREED_NODE;
1581         }
1582 }
1583
1584 static uint32_t
1585 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1586                               struct lpfc_nodelist *ndlp,
1587                               void *arg,
1588                               uint32_t evt)
1589 {
1590         struct lpfc_hba  *phba = vport->phba;
1591
1592         /* Don't do anything that will mess up processing of the
1593          * previous RSCN.
1594          */
1595         if (vport->fc_flag & FC_RSCN_DEFERRED)
1596                 return ndlp->nlp_state;
1597
1598         /* software abort outstanding PLOGI */
1599         lpfc_els_abort(phba, ndlp);
1600
1601         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1602         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1603         spin_lock_irq(&ndlp->lock);
1604         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1605         spin_unlock_irq(&ndlp->lock);
1606
1607         return ndlp->nlp_state;
1608 }
1609
1610 static uint32_t
1611 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1612                            void *arg, uint32_t evt)
1613 {
1614         struct lpfc_hba   *phba = vport->phba;
1615         struct lpfc_iocbq *cmdiocb;
1616
1617         /* software abort outstanding ADISC */
1618         lpfc_els_abort(phba, ndlp);
1619
1620         cmdiocb = (struct lpfc_iocbq *) arg;
1621
1622         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1623                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1624                         spin_lock_irq(&ndlp->lock);
1625                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1626                         spin_unlock_irq(&ndlp->lock);
1627                         if (vport->num_disc_nodes)
1628                                 lpfc_more_adisc(vport);
1629                 }
1630                 return ndlp->nlp_state;
1631         }
1632         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1633         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1634         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1635
1636         return ndlp->nlp_state;
1637 }
1638
1639 static uint32_t
1640 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1641                           void *arg, uint32_t evt)
1642 {
1643         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1644
1645         if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1646                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1647         return ndlp->nlp_state;
1648 }
1649
1650 static uint32_t
1651 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1652                           void *arg, uint32_t evt)
1653 {
1654         struct lpfc_hba *phba = vport->phba;
1655         struct lpfc_iocbq *cmdiocb;
1656
1657         cmdiocb = (struct lpfc_iocbq *) arg;
1658
1659         /* software abort outstanding ADISC */
1660         lpfc_els_abort(phba, ndlp);
1661
1662         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1663         return ndlp->nlp_state;
1664 }
1665
1666 static uint32_t
1667 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1668                             struct lpfc_nodelist *ndlp,
1669                             void *arg, uint32_t evt)
1670 {
1671         struct lpfc_iocbq *cmdiocb;
1672
1673         cmdiocb = (struct lpfc_iocbq *) arg;
1674
1675         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1676         return ndlp->nlp_state;
1677 }
1678
1679 static uint32_t
1680 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1681                           void *arg, uint32_t evt)
1682 {
1683         struct lpfc_iocbq *cmdiocb;
1684
1685         cmdiocb = (struct lpfc_iocbq *) arg;
1686
1687         /* Treat like rcv logo */
1688         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1689         return ndlp->nlp_state;
1690 }
1691
1692 static uint32_t
1693 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1694                             struct lpfc_nodelist *ndlp,
1695                             void *arg, uint32_t evt)
1696 {
1697         struct lpfc_hba   *phba = vport->phba;
1698         struct lpfc_iocbq *cmdiocb, *rspiocb;
1699         ADISC *ap;
1700         int rc;
1701         u32 ulp_status;
1702
1703         cmdiocb = (struct lpfc_iocbq *) arg;
1704         rspiocb = cmdiocb->rsp_iocb;
1705
1706         ulp_status = get_job_ulpstatus(phba, rspiocb);
1707
1708         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1709
1710         if ((ulp_status) ||
1711             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1712                 /* 1 sec timeout */
1713                 mod_timer(&ndlp->nlp_delayfunc,
1714                           jiffies + msecs_to_jiffies(1000));
1715                 spin_lock_irq(&ndlp->lock);
1716                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1717                 spin_unlock_irq(&ndlp->lock);
1718                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1719
1720                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1721                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1722                 lpfc_unreg_rpi(vport, ndlp);
1723                 return ndlp->nlp_state;
1724         }
1725
1726         if (phba->sli_rev == LPFC_SLI_REV4) {
1727                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1728                 if (rc) {
1729                         /* Stay in state and retry. */
1730                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1731                         return ndlp->nlp_state;
1732                 }
1733         }
1734
1735         if (ndlp->nlp_type & NLP_FCP_TARGET)
1736                 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1737
1738         if (ndlp->nlp_type & NLP_NVME_TARGET)
1739                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1740
1741         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1742                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1743                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1744         } else {
1745                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1746                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1747         }
1748
1749         return ndlp->nlp_state;
1750 }
1751
1752 static uint32_t
1753 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1754                            void *arg, uint32_t evt)
1755 {
1756         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1757                 spin_lock_irq(&ndlp->lock);
1758                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1759                 spin_unlock_irq(&ndlp->lock);
1760                 return ndlp->nlp_state;
1761         } else {
1762                 /* software abort outstanding ADISC */
1763                 lpfc_els_abort(vport->phba, ndlp);
1764
1765                 lpfc_drop_node(vport, ndlp);
1766                 return NLP_STE_FREED_NODE;
1767         }
1768 }
1769
1770 static uint32_t
1771 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1772                               struct lpfc_nodelist *ndlp,
1773                               void *arg,
1774                               uint32_t evt)
1775 {
1776         struct lpfc_hba  *phba = vport->phba;
1777
1778         /* Don't do anything that will mess up processing of the
1779          * previous RSCN.
1780          */
1781         if (vport->fc_flag & FC_RSCN_DEFERRED)
1782                 return ndlp->nlp_state;
1783
1784         /* software abort outstanding ADISC */
1785         lpfc_els_abort(phba, ndlp);
1786
1787         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1788         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1789         spin_lock_irq(&ndlp->lock);
1790         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1791         spin_unlock_irq(&ndlp->lock);
1792         lpfc_disc_set_adisc(vport, ndlp);
1793         return ndlp->nlp_state;
1794 }
1795
1796 static uint32_t
1797 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1798                               struct lpfc_nodelist *ndlp,
1799                               void *arg,
1800                               uint32_t evt)
1801 {
1802         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1803
1804         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1805         return ndlp->nlp_state;
1806 }
1807
1808 static uint32_t
1809 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1810                              struct lpfc_nodelist *ndlp,
1811                              void *arg,
1812                              uint32_t evt)
1813 {
1814         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1815         struct ls_rjt     stat;
1816
1817         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1818                 return ndlp->nlp_state;
1819         }
1820         if (vport->phba->nvmet_support) {
1821                 /* NVME Target mode.  Handle and respond to the PRLI and
1822                  * transition to UNMAPPED provided the RPI has completed
1823                  * registration.
1824                  */
1825                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1826                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1827                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1828                 } else {
1829                         /* RPI registration has not completed. Reject the PRLI
1830                          * to prevent an illegal state transition when the
1831                          * rpi registration does complete.
1832                          */
1833                         memset(&stat, 0, sizeof(struct ls_rjt));
1834                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1835                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1836                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1837                                             ndlp, NULL);
1838                         return ndlp->nlp_state;
1839                 }
1840         } else {
1841                 /* Initiator mode. */
1842                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1843         }
1844         return ndlp->nlp_state;
1845 }
1846
1847 static uint32_t
1848 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1849                              struct lpfc_nodelist *ndlp,
1850                              void *arg,
1851                              uint32_t evt)
1852 {
1853         struct lpfc_hba   *phba = vport->phba;
1854         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1855         LPFC_MBOXQ_t      *mb;
1856         LPFC_MBOXQ_t      *nextmb;
1857         struct lpfc_nodelist *ns_ndlp;
1858
1859         cmdiocb = (struct lpfc_iocbq *) arg;
1860
1861         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1862         if ((mb = phba->sli.mbox_active)) {
1863                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1864                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1865                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1866                         lpfc_nlp_put(ndlp);
1867                         mb->ctx_ndlp = NULL;
1868                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1869                 }
1870         }
1871
1872         spin_lock_irq(&phba->hbalock);
1873         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1874                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1875                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1876                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1877                         lpfc_nlp_put(ndlp);
1878                         list_del(&mb->list);
1879                         phba->sli.mboxq_cnt--;
1880                         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
1881                 }
1882         }
1883         spin_unlock_irq(&phba->hbalock);
1884
1885         /* software abort if any GID_FT is outstanding */
1886         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1887                 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1888                 if (ns_ndlp)
1889                         lpfc_els_abort(phba, ns_ndlp);
1890         }
1891
1892         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1893         return ndlp->nlp_state;
1894 }
1895
1896 static uint32_t
1897 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1898                                struct lpfc_nodelist *ndlp,
1899                                void *arg,
1900                                uint32_t evt)
1901 {
1902         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1903
1904         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1905         return ndlp->nlp_state;
1906 }
1907
1908 static uint32_t
1909 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1910                              struct lpfc_nodelist *ndlp,
1911                              void *arg,
1912                              uint32_t evt)
1913 {
1914         struct lpfc_iocbq *cmdiocb;
1915
1916         cmdiocb = (struct lpfc_iocbq *) arg;
1917         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1918         return ndlp->nlp_state;
1919 }
1920
1921 static uint32_t
1922 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1923                                   struct lpfc_nodelist *ndlp,
1924                                   void *arg,
1925                                   uint32_t evt)
1926 {
1927         struct lpfc_hba *phba = vport->phba;
1928         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1929         MAILBOX_t *mb = &pmb->u.mb;
1930         uint32_t did  = mb->un.varWords[1];
1931
1932         if (mb->mbxStatus) {
1933                 /* RegLogin failed */
1934                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1935                                  "0246 RegLogin failed Data: x%x x%x x%x x%x "
1936                                  "x%x\n",
1937                                  did, mb->mbxStatus, vport->port_state,
1938                                  mb->un.varRegLogin.vpi,
1939                                  mb->un.varRegLogin.rpi);
1940                 /*
1941                  * If RegLogin failed due to lack of HBA resources do not
1942                  * retry discovery.
1943                  */
1944                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1945                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1946                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1947                         return ndlp->nlp_state;
1948                 }
1949
1950                 /* Put ndlp in npr state set plogi timer for 1 sec */
1951                 mod_timer(&ndlp->nlp_delayfunc,
1952                           jiffies + msecs_to_jiffies(1000 * 1));
1953                 spin_lock_irq(&ndlp->lock);
1954                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1955                 spin_unlock_irq(&ndlp->lock);
1956                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1957
1958                 lpfc_issue_els_logo(vport, ndlp, 0);
1959                 return ndlp->nlp_state;
1960         }
1961
1962         /* SLI4 ports have preallocated logical rpis. */
1963         if (phba->sli_rev < LPFC_SLI_REV4)
1964                 ndlp->nlp_rpi = mb->un.varWords[0];
1965
1966         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1967
1968         /* Only if we are not a fabric nport do we issue PRLI */
1969         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1970                          "3066 RegLogin Complete on x%x x%x x%x\n",
1971                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1972         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1973             (phba->nvmet_support == 0)) {
1974                 /* The driver supports FCP and NVME concurrently.  If the
1975                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1976                  * know what PRLI to send yet.  Figure that out now and
1977                  * call PRLI depending on the outcome.
1978                  */
1979                 if (vport->fc_flag & FC_PT2PT) {
1980                         /* If we are pt2pt, there is no Fabric to determine
1981                          * the FC4 type of the remote nport. So if NVME
1982                          * is configured try it.
1983                          */
1984                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1985                         if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
1986                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
1987                             vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1988                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1989                                 /* We need to update the localport also */
1990                                 lpfc_nvme_update_localport(vport);
1991                         }
1992
1993                 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1994                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1995
1996                 } else if (ndlp->nlp_fc4_type == 0) {
1997                         /* If we are only configured for FCP, the driver
1998                          * should just issue PRLI for FCP. Otherwise issue
1999                          * GFT_ID to determine if remote port supports NVME.
2000                          */
2001                         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
2002                                 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
2003                                             ndlp->nlp_DID);
2004                                 return ndlp->nlp_state;
2005                         }
2006                         ndlp->nlp_fc4_type = NLP_FC4_FCP;
2007                 }
2008
2009                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2010                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2011                 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
2012                         lpfc_issue_els_logo(vport, ndlp, 0);
2013                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2014                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2015                 }
2016         } else {
2017                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
2018                         phba->targetport->port_id = vport->fc_myDID;
2019
2020                 /* Only Fabric ports should transition. NVME target
2021                  * must complete PRLI.
2022                  */
2023                 if (ndlp->nlp_type & NLP_FABRIC) {
2024                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2025                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2026                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2027                 }
2028         }
2029         return ndlp->nlp_state;
2030 }
2031
2032 static uint32_t
2033 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2034                               struct lpfc_nodelist *ndlp,
2035                               void *arg,
2036                               uint32_t evt)
2037 {
2038         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2039                 spin_lock_irq(&ndlp->lock);
2040                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2041                 spin_unlock_irq(&ndlp->lock);
2042                 return ndlp->nlp_state;
2043         } else {
2044                 lpfc_drop_node(vport, ndlp);
2045                 return NLP_STE_FREED_NODE;
2046         }
2047 }
2048
2049 static uint32_t
2050 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2051                                  struct lpfc_nodelist *ndlp,
2052                                  void *arg,
2053                                  uint32_t evt)
2054 {
2055         /* Don't do anything that will mess up processing of the
2056          * previous RSCN.
2057          */
2058         if (vport->fc_flag & FC_RSCN_DEFERRED)
2059                 return ndlp->nlp_state;
2060
2061         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2062         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2063         spin_lock_irq(&ndlp->lock);
2064
2065         /* If we are a target we won't immediately transition into PRLI,
2066          * so if REG_LOGIN already completed we don't need to ignore it.
2067          */
2068         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2069             !vport->phba->nvmet_support)
2070                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2071
2072         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2073         spin_unlock_irq(&ndlp->lock);
2074         lpfc_disc_set_adisc(vport, ndlp);
2075         return ndlp->nlp_state;
2076 }
2077
2078 static uint32_t
2079 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2080                           void *arg, uint32_t evt)
2081 {
2082         struct lpfc_iocbq *cmdiocb;
2083
2084         cmdiocb = (struct lpfc_iocbq *) arg;
2085
2086         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2087         return ndlp->nlp_state;
2088 }
2089
2090 static uint32_t
2091 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2092                          void *arg, uint32_t evt)
2093 {
2094         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2095
2096         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2097                 return ndlp->nlp_state;
2098         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2099         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2100         return ndlp->nlp_state;
2101 }
2102
2103 static uint32_t
2104 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2105                          void *arg, uint32_t evt)
2106 {
2107         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2108
2109         /* Software abort outstanding PRLI before sending acc */
2110         lpfc_els_abort(vport->phba, ndlp);
2111
2112         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2113         return ndlp->nlp_state;
2114 }
2115
2116 static uint32_t
2117 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2118                            void *arg, uint32_t evt)
2119 {
2120         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2121
2122         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2123         return ndlp->nlp_state;
2124 }
2125
2126 /* This routine is envoked when we rcv a PRLO request from a nport
2127  * we are logged into.  We should send back a PRLO rsp setting the
2128  * appropriate bits.
2129  * NEXT STATE = PRLI_ISSUE
2130  */
2131 static uint32_t
2132 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2133                          void *arg, uint32_t evt)
2134 {
2135         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2136
2137         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2138         return ndlp->nlp_state;
2139 }
2140
2141 static uint32_t
2142 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2143                           void *arg, uint32_t evt)
2144 {
2145         struct lpfc_iocbq *cmdiocb, *rspiocb;
2146         struct lpfc_hba   *phba = vport->phba;
2147         PRLI *npr;
2148         struct lpfc_nvme_prli *nvpr;
2149         void *temp_ptr;
2150         u32 ulp_status;
2151
2152         cmdiocb = (struct lpfc_iocbq *) arg;
2153         rspiocb = cmdiocb->rsp_iocb;
2154
2155         ulp_status = get_job_ulpstatus(phba, rspiocb);
2156
2157         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
2158          * format is different so NULL the two PRLI types so that the
2159          * driver correctly gets the correct context.
2160          */
2161         npr = NULL;
2162         nvpr = NULL;
2163         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2164         if (cmdiocb->cmd_flag & LPFC_PRLI_FCP_REQ)
2165                 npr = (PRLI *) temp_ptr;
2166         else if (cmdiocb->cmd_flag & LPFC_PRLI_NVME_REQ)
2167                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2168
2169         if (ulp_status) {
2170                 if ((vport->port_type == LPFC_NPIV_PORT) &&
2171                     vport->cfg_restrict_login) {
2172                         goto out;
2173                 }
2174
2175                 /* Adjust the nlp_type accordingly if the PRLI failed */
2176                 if (npr)
2177                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2178                 if (nvpr)
2179                         ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2180
2181                 /* We can't set the DSM state till BOTH PRLIs complete */
2182                 goto out_err;
2183         }
2184
2185         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2186             (npr->prliType == PRLI_FCP_TYPE)) {
2187                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2188                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2189                                  npr->initiatorFunc,
2190                                  npr->targetFunc);
2191                 if (npr->initiatorFunc)
2192                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
2193                 if (npr->targetFunc) {
2194                         ndlp->nlp_type |= NLP_FCP_TARGET;
2195                         if (npr->writeXferRdyDis)
2196                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2197                 }
2198                 if (npr->Retry)
2199                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2200
2201         } else if (nvpr &&
2202                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2203                     PRLI_REQ_EXECUTED) &&
2204                    (bf_get_be32(prli_type_code, nvpr) ==
2205                     PRLI_NVME_TYPE)) {
2206
2207                 /* Complete setting up the remote ndlp personality. */
2208                 if (bf_get_be32(prli_init, nvpr))
2209                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
2210
2211                 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2212                     bf_get_be32(prli_conf, nvpr))
2213
2214                         ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2215                 else
2216                         ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2217
2218                 /* Target driver cannot solicit NVME FB. */
2219                 if (bf_get_be32(prli_tgt, nvpr)) {
2220                         /* Complete the nvme target roles.  The transport
2221                          * needs to know if the rport is capable of
2222                          * discovery in addition to its role.
2223                          */
2224                         ndlp->nlp_type |= NLP_NVME_TARGET;
2225                         if (bf_get_be32(prli_disc, nvpr))
2226                                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2227
2228                         /*
2229                          * If prli_fba is set, the Target supports FirstBurst.
2230                          * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2231                          * otherwise it defines the actual size supported by
2232                          * the NVME Target.
2233                          */
2234                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2235                             (phba->cfg_nvme_enable_fb) &&
2236                             (!phba->nvmet_support)) {
2237                                 /* Both sides support FB. The target's first
2238                                  * burst size is a 512 byte encoded value.
2239                                  */
2240                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2241                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2242                                                                  nvpr);
2243
2244                                 /* Expressed in units of 512 bytes */
2245                                 if (ndlp->nvme_fb_size)
2246                                         ndlp->nvme_fb_size <<=
2247                                                 LPFC_NVME_FB_SHIFT;
2248                                 else
2249                                         ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2250                         }
2251                 }
2252
2253                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2254                                  "6029 NVME PRLI Cmpl w1 x%08x "
2255                                  "w4 x%08x w5 x%08x flag x%x, "
2256                                  "fcp_info x%x nlp_type x%x\n",
2257                                  be32_to_cpu(nvpr->word1),
2258                                  be32_to_cpu(nvpr->word4),
2259                                  be32_to_cpu(nvpr->word5),
2260                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
2261                                  ndlp->nlp_type);
2262         }
2263         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2264             (vport->port_type == LPFC_NPIV_PORT) &&
2265              vport->cfg_restrict_login) {
2266 out:
2267                 spin_lock_irq(&ndlp->lock);
2268                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2269                 spin_unlock_irq(&ndlp->lock);
2270                 lpfc_issue_els_logo(vport, ndlp, 0);
2271
2272                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2273                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2274                 return ndlp->nlp_state;
2275         }
2276
2277 out_err:
2278         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2279          * are complete.
2280          */
2281         if (ndlp->fc4_prli_sent == 0) {
2282                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2283                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2284                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2285                 else if (ndlp->nlp_type &
2286                          (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2287                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2288         } else
2289                 lpfc_printf_vlog(vport,
2290                                  KERN_INFO, LOG_ELS,
2291                                  "3067 PRLI's still outstanding "
2292                                  "on x%06x - count %d, Pend Node Mode "
2293                                  "transition...\n",
2294                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2295
2296         return ndlp->nlp_state;
2297 }
2298
2299 /*! lpfc_device_rm_prli_issue
2300  *
2301  * \pre
2302  * \post
2303  * \param   phba
2304  * \param   ndlp
2305  * \param   arg
2306  * \param   evt
2307  * \return  uint32_t
2308  *
2309  * \b Description:
2310  *    This routine is envoked when we a request to remove a nport we are in the
2311  *    process of PRLIing. We should software abort outstanding prli, unreg
2312  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2313  *    on plogi list so it can be freed when LOGO completes.
2314  *
2315  */
2316
2317 static uint32_t
2318 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2319                           void *arg, uint32_t evt)
2320 {
2321         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2322                 spin_lock_irq(&ndlp->lock);
2323                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2324                 spin_unlock_irq(&ndlp->lock);
2325                 return ndlp->nlp_state;
2326         } else {
2327                 /* software abort outstanding PLOGI */
2328                 lpfc_els_abort(vport->phba, ndlp);
2329
2330                 lpfc_drop_node(vport, ndlp);
2331                 return NLP_STE_FREED_NODE;
2332         }
2333 }
2334
2335
2336 /*! lpfc_device_recov_prli_issue
2337  *
2338  * \pre
2339  * \post
2340  * \param   phba
2341  * \param   ndlp
2342  * \param   arg
2343  * \param   evt
2344  * \return  uint32_t
2345  *
2346  * \b Description:
2347  *    The routine is envoked when the state of a device is unknown, like
2348  *    during a link down. We should remove the nodelist entry from the
2349  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2350  *    outstanding PRLI command, then free the node entry.
2351  */
2352 static uint32_t
2353 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2354                              struct lpfc_nodelist *ndlp,
2355                              void *arg,
2356                              uint32_t evt)
2357 {
2358         struct lpfc_hba  *phba = vport->phba;
2359
2360         /* Don't do anything that will mess up processing of the
2361          * previous RSCN.
2362          */
2363         if (vport->fc_flag & FC_RSCN_DEFERRED)
2364                 return ndlp->nlp_state;
2365
2366         /* software abort outstanding PRLI */
2367         lpfc_els_abort(phba, ndlp);
2368
2369         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2370         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2371         spin_lock_irq(&ndlp->lock);
2372         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2373         spin_unlock_irq(&ndlp->lock);
2374         lpfc_disc_set_adisc(vport, ndlp);
2375         return ndlp->nlp_state;
2376 }
2377
2378 static uint32_t
2379 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2380                           void *arg, uint32_t evt)
2381 {
2382         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2383         struct ls_rjt     stat;
2384
2385         memset(&stat, 0, sizeof(struct ls_rjt));
2386         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2387         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2388         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2389         return ndlp->nlp_state;
2390 }
2391
2392 static uint32_t
2393 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2394                          void *arg, uint32_t evt)
2395 {
2396         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2397         struct ls_rjt     stat;
2398
2399         memset(&stat, 0, sizeof(struct ls_rjt));
2400         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2401         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2402         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2403         return ndlp->nlp_state;
2404 }
2405
2406 static uint32_t
2407 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2408                          void *arg, uint32_t evt)
2409 {
2410         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2411
2412         spin_lock_irq(&ndlp->lock);
2413         ndlp->nlp_flag |= NLP_LOGO_ACC;
2414         spin_unlock_irq(&ndlp->lock);
2415         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2416         return ndlp->nlp_state;
2417 }
2418
2419 static uint32_t
2420 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2421                            void *arg, uint32_t evt)
2422 {
2423         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2424         struct ls_rjt     stat;
2425
2426         memset(&stat, 0, sizeof(struct ls_rjt));
2427         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2428         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2429         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2430         return ndlp->nlp_state;
2431 }
2432
2433 static uint32_t
2434 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2435                          void *arg, uint32_t evt)
2436 {
2437         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2438         struct ls_rjt     stat;
2439
2440         memset(&stat, 0, sizeof(struct ls_rjt));
2441         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2442         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2443         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2444         return ndlp->nlp_state;
2445 }
2446
2447 static uint32_t
2448 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2449                           void *arg, uint32_t evt)
2450 {
2451         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2452         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2453         spin_lock_irq(&ndlp->lock);
2454         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2455         spin_unlock_irq(&ndlp->lock);
2456         lpfc_disc_set_adisc(vport, ndlp);
2457         return ndlp->nlp_state;
2458 }
2459
2460 static uint32_t
2461 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2462                           void *arg, uint32_t evt)
2463 {
2464         /*
2465          * DevLoss has timed out and is calling for Device Remove.
2466          * In this case, abort the LOGO and cleanup the ndlp
2467          */
2468
2469         lpfc_unreg_rpi(vport, ndlp);
2470         /* software abort outstanding PLOGI */
2471         lpfc_els_abort(vport->phba, ndlp);
2472         lpfc_drop_node(vport, ndlp);
2473         return NLP_STE_FREED_NODE;
2474 }
2475
2476 static uint32_t
2477 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2478                              struct lpfc_nodelist *ndlp,
2479                              void *arg, uint32_t evt)
2480 {
2481         /*
2482          * Device Recovery events have no meaning for a node with a LOGO
2483          * outstanding.  The LOGO has to complete first and handle the
2484          * node from that point.
2485          */
2486         return ndlp->nlp_state;
2487 }
2488
2489 static uint32_t
2490 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2491                           void *arg, uint32_t evt)
2492 {
2493         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2494
2495         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2496         return ndlp->nlp_state;
2497 }
2498
2499 static uint32_t
2500 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2501                          void *arg, uint32_t evt)
2502 {
2503         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2504
2505         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2506                 return ndlp->nlp_state;
2507
2508         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2509         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2510         return ndlp->nlp_state;
2511 }
2512
2513 static uint32_t
2514 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2515                          void *arg, uint32_t evt)
2516 {
2517         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2518
2519         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2520         return ndlp->nlp_state;
2521 }
2522
2523 static uint32_t
2524 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2525                            void *arg, uint32_t evt)
2526 {
2527         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2528
2529         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2530         return ndlp->nlp_state;
2531 }
2532
2533 static uint32_t
2534 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2535                          void *arg, uint32_t evt)
2536 {
2537         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2538
2539         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2540         return ndlp->nlp_state;
2541 }
2542
2543 static uint32_t
2544 lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
2545                           struct lpfc_nodelist *ndlp,
2546                           void *arg,
2547                           uint32_t evt)
2548 {
2549         lpfc_drop_node(vport, ndlp);
2550         return NLP_STE_FREED_NODE;
2551 }
2552
2553 static uint32_t
2554 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2555                              struct lpfc_nodelist *ndlp,
2556                              void *arg,
2557                              uint32_t evt)
2558 {
2559         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2560         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2561         spin_lock_irq(&ndlp->lock);
2562         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2563         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2564         spin_unlock_irq(&ndlp->lock);
2565         lpfc_disc_set_adisc(vport, ndlp);
2566
2567         return ndlp->nlp_state;
2568 }
2569
2570 static uint32_t
2571 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2572                            void *arg, uint32_t evt)
2573 {
2574         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2575
2576         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2577         return ndlp->nlp_state;
2578 }
2579
2580 static uint32_t
2581 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2582                           void *arg, uint32_t evt)
2583 {
2584         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2585
2586         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2587                 return ndlp->nlp_state;
2588         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2589         return ndlp->nlp_state;
2590 }
2591
2592 static uint32_t
2593 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2594                           void *arg, uint32_t evt)
2595 {
2596         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2597
2598         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2599         return ndlp->nlp_state;
2600 }
2601
2602 static uint32_t
2603 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2604                             struct lpfc_nodelist *ndlp,
2605                             void *arg, uint32_t evt)
2606 {
2607         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2608
2609         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2610         return ndlp->nlp_state;
2611 }
2612
2613 static uint32_t
2614 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2615                           void *arg, uint32_t evt)
2616 {
2617         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2618
2619         /* flush the target */
2620         lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2621
2622         /* Treat like rcv logo */
2623         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2624         return ndlp->nlp_state;
2625 }
2626
2627 static uint32_t
2628 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2629                               struct lpfc_nodelist *ndlp,
2630                               void *arg,
2631                               uint32_t evt)
2632 {
2633         lpfc_disc_set_adisc(vport, ndlp);
2634
2635         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2636         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2637         spin_lock_irq(&ndlp->lock);
2638         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2639         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2640         spin_unlock_irq(&ndlp->lock);
2641         return ndlp->nlp_state;
2642 }
2643
2644 static uint32_t
2645 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2646                         void *arg, uint32_t evt)
2647 {
2648         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2649
2650         /* Ignore PLOGI if we have an outstanding LOGO */
2651         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2652                 return ndlp->nlp_state;
2653         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2654                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2655                 spin_lock_irq(&ndlp->lock);
2656                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2657                 spin_unlock_irq(&ndlp->lock);
2658         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2659                 /* send PLOGI immediately, move to PLOGI issue state */
2660                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2661                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2662                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2663                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2664                 }
2665         }
2666         return ndlp->nlp_state;
2667 }
2668
2669 static uint32_t
2670 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2671                        void *arg, uint32_t evt)
2672 {
2673         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2674         struct ls_rjt     stat;
2675
2676         memset(&stat, 0, sizeof (struct ls_rjt));
2677         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2678         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2679         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2680
2681         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2682                 /*
2683                  * ADISC nodes will be handled in regular discovery path after
2684                  * receiving response from NS.
2685                  *
2686                  * For other nodes, Send PLOGI to trigger an implicit LOGO.
2687                  */
2688                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2689                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2690                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2691                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2692                 }
2693         }
2694         return ndlp->nlp_state;
2695 }
2696
2697 static uint32_t
2698 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2699                        void *arg, uint32_t evt)
2700 {
2701         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2702
2703         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2704         return ndlp->nlp_state;
2705 }
2706
2707 static uint32_t
2708 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2709                          void *arg, uint32_t evt)
2710 {
2711         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2712
2713         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2714         /*
2715          * Do not start discovery if discovery is about to start
2716          * or discovery in progress for this node. Starting discovery
2717          * here will affect the counting of discovery threads.
2718          */
2719         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2720             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2721                 /*
2722                  * ADISC nodes will be handled in regular discovery path after
2723                  * receiving response from NS.
2724                  *
2725                  * For other nodes, Send PLOGI to trigger an implicit LOGO.
2726                  */
2727                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2728                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2729                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2730                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2731                 }
2732         }
2733         return ndlp->nlp_state;
2734 }
2735
2736 static uint32_t
2737 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2738                        void *arg, uint32_t evt)
2739 {
2740         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2741
2742         spin_lock_irq(&ndlp->lock);
2743         ndlp->nlp_flag |= NLP_LOGO_ACC;
2744         spin_unlock_irq(&ndlp->lock);
2745
2746         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2747
2748         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2749                 mod_timer(&ndlp->nlp_delayfunc,
2750                           jiffies + msecs_to_jiffies(1000 * 1));
2751                 spin_lock_irq(&ndlp->lock);
2752                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2753                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2754                 spin_unlock_irq(&ndlp->lock);
2755                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2756         } else {
2757                 spin_lock_irq(&ndlp->lock);
2758                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2759                 spin_unlock_irq(&ndlp->lock);
2760         }
2761         return ndlp->nlp_state;
2762 }
2763
2764 static uint32_t
2765 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2766                          void *arg, uint32_t evt)
2767 {
2768         struct lpfc_hba *phba = vport->phba;
2769         struct lpfc_iocbq *cmdiocb, *rspiocb;
2770         u32 ulp_status;
2771
2772         cmdiocb = (struct lpfc_iocbq *) arg;
2773         rspiocb = cmdiocb->rsp_iocb;
2774
2775         ulp_status = get_job_ulpstatus(phba, rspiocb);
2776
2777         if (ulp_status)
2778                 return NLP_STE_FREED_NODE;
2779
2780         return ndlp->nlp_state;
2781 }
2782
2783 static uint32_t
2784 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2785                         void *arg, uint32_t evt)
2786 {
2787         struct lpfc_hba *phba = vport->phba;
2788         struct lpfc_iocbq *cmdiocb, *rspiocb;
2789         u32 ulp_status;
2790
2791         cmdiocb = (struct lpfc_iocbq *) arg;
2792         rspiocb = cmdiocb->rsp_iocb;
2793
2794         ulp_status = get_job_ulpstatus(phba, rspiocb);
2795
2796         if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2797                 lpfc_drop_node(vport, ndlp);
2798                 return NLP_STE_FREED_NODE;
2799         }
2800         return ndlp->nlp_state;
2801 }
2802
2803 static uint32_t
2804 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2805                         void *arg, uint32_t evt)
2806 {
2807         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2808
2809         /* For the fabric port just clear the fc flags. */
2810         if (ndlp->nlp_DID == Fabric_DID) {
2811                 spin_lock_irq(shost->host_lock);
2812                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2813                 spin_unlock_irq(shost->host_lock);
2814         }
2815         lpfc_unreg_rpi(vport, ndlp);
2816         return ndlp->nlp_state;
2817 }
2818
2819 static uint32_t
2820 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2821                          void *arg, uint32_t evt)
2822 {
2823         struct lpfc_hba *phba = vport->phba;
2824         struct lpfc_iocbq *cmdiocb, *rspiocb;
2825         u32 ulp_status;
2826
2827         cmdiocb = (struct lpfc_iocbq *) arg;
2828         rspiocb = cmdiocb->rsp_iocb;
2829
2830         ulp_status = get_job_ulpstatus(phba, rspiocb);
2831
2832         if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2833                 lpfc_drop_node(vport, ndlp);
2834                 return NLP_STE_FREED_NODE;
2835         }
2836         return ndlp->nlp_state;
2837 }
2838
2839 static uint32_t
2840 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2841                             struct lpfc_nodelist *ndlp,
2842                             void *arg, uint32_t evt)
2843 {
2844         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2845         MAILBOX_t    *mb = &pmb->u.mb;
2846
2847         if (!mb->mbxStatus) {
2848                 /* SLI4 ports have preallocated logical rpis. */
2849                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2850                         ndlp->nlp_rpi = mb->un.varWords[0];
2851                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2852                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2853                         lpfc_unreg_rpi(vport, ndlp);
2854                 }
2855         } else {
2856                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2857                         lpfc_drop_node(vport, ndlp);
2858                         return NLP_STE_FREED_NODE;
2859                 }
2860         }
2861         return ndlp->nlp_state;
2862 }
2863
2864 static uint32_t
2865 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2866                         void *arg, uint32_t evt)
2867 {
2868         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2869                 spin_lock_irq(&ndlp->lock);
2870                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2871                 spin_unlock_irq(&ndlp->lock);
2872                 return ndlp->nlp_state;
2873         }
2874         lpfc_drop_node(vport, ndlp);
2875         return NLP_STE_FREED_NODE;
2876 }
2877
2878 static uint32_t
2879 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2880                            void *arg, uint32_t evt)
2881 {
2882         /* Don't do anything that will mess up processing of the
2883          * previous RSCN.
2884          */
2885         if (vport->fc_flag & FC_RSCN_DEFERRED)
2886                 return ndlp->nlp_state;
2887
2888         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2889         spin_lock_irq(&ndlp->lock);
2890         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2891         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2892         spin_unlock_irq(&ndlp->lock);
2893         return ndlp->nlp_state;
2894 }
2895
2896
2897 /* This next section defines the NPort Discovery State Machine */
2898
2899 /* There are 4 different double linked lists nodelist entries can reside on.
2900  * The plogi list and adisc list are used when Link Up discovery or RSCN
2901  * processing is needed. Each list holds the nodes that we will send PLOGI
2902  * or ADISC on. These lists will keep track of what nodes will be effected
2903  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2904  * The unmapped_list will contain all nodes that we have successfully logged
2905  * into at the Fibre Channel level. The mapped_list will contain all nodes
2906  * that are mapped FCP targets.
2907  */
2908 /*
2909  * The bind list is a list of undiscovered (potentially non-existent) nodes
2910  * that we have saved binding information on. This information is used when
2911  * nodes transition from the unmapped to the mapped list.
2912  */
2913 /* For UNUSED_NODE state, the node has just been allocated .
2914  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2915  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2916  * and put on the unmapped list. For ADISC processing, the node is taken off
2917  * the ADISC list and placed on either the mapped or unmapped list (depending
2918  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2919  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2920  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2921  * node, the node is taken off the unmapped list. The binding list is checked
2922  * for a valid binding, or a binding is automatically assigned. If binding
2923  * assignment is unsuccessful, the node is left on the unmapped list. If
2924  * binding assignment is successful, the associated binding list entry (if
2925  * any) is removed, and the node is placed on the mapped list.
2926  */
2927 /*
2928  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2929  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2930  * expire, all effected nodes will receive a DEVICE_RM event.
2931  */
2932 /*
2933  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2934  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2935  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2936  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2937  * we will first process the ADISC list.  32 entries are processed initially and
2938  * ADISC is initited for each one.  Completions / Events for each node are
2939  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2940  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2941  * waiting, and the ADISC list count is identically 0, then we are done. For
2942  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2943  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2944  * list.  32 entries are processed initially and PLOGI is initited for each one.
2945  * Completions / Events for each node are funnelled thru the state machine.  As
2946  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2947  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2948  * indentically 0, then we are done. We have now completed discovery / RSCN
2949  * handling. Upon completion, ALL nodes should be on either the mapped or
2950  * unmapped lists.
2951  */
2952
2953 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2954      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2955         /* Action routine                  Event       Current State  */
2956         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2957         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2958         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2959         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2960         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2961         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2962         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2963         lpfc_disc_illegal,              /* CMPL_PRLI       */
2964         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2965         lpfc_disc_illegal,              /* CMPL_ADISC      */
2966         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2967         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2968         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2969
2970         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2971         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2972         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2973         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2974         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2975         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2976         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2977         lpfc_disc_illegal,              /* CMPL_PRLI       */
2978         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2979         lpfc_disc_illegal,              /* CMPL_ADISC      */
2980         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2981         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2982         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2983
2984         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2985         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2986         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2987         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2988         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2989         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2990         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2991         lpfc_disc_illegal,              /* CMPL_PRLI       */
2992         lpfc_disc_illegal,              /* CMPL_LOGO       */
2993         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2994         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2995         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2996         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2997
2998         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2999         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
3000         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
3001         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
3002         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
3003         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
3004         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3005         lpfc_disc_illegal,              /* CMPL_PRLI       */
3006         lpfc_disc_illegal,              /* CMPL_LOGO       */
3007         lpfc_disc_illegal,              /* CMPL_ADISC      */
3008         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
3009         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
3010         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
3011
3012         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
3013         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
3014         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
3015         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
3016         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
3017         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
3018         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3019         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
3020         lpfc_disc_illegal,              /* CMPL_LOGO       */
3021         lpfc_disc_illegal,              /* CMPL_ADISC      */
3022         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3023         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
3024         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
3025
3026         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
3027         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
3028         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
3029         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
3030         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
3031         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
3032         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
3033         lpfc_disc_illegal,              /* CMPL_PRLI       */
3034         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
3035         lpfc_disc_illegal,              /* CMPL_ADISC      */
3036         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3037         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
3038         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
3039
3040         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
3041         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
3042         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
3043         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
3044         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
3045         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
3046         lpfc_disc_illegal,              /* CMPL_PLOGI      */
3047         lpfc_disc_illegal,              /* CMPL_PRLI       */
3048         lpfc_disc_illegal,              /* CMPL_LOGO       */
3049         lpfc_disc_illegal,              /* CMPL_ADISC      */
3050         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3051         lpfc_device_rm_unmap_node,      /* DEVICE_RM       */
3052         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
3053
3054         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
3055         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
3056         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
3057         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
3058         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
3059         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
3060         lpfc_disc_illegal,              /* CMPL_PLOGI      */
3061         lpfc_disc_illegal,              /* CMPL_PRLI       */
3062         lpfc_disc_illegal,              /* CMPL_LOGO       */
3063         lpfc_disc_illegal,              /* CMPL_ADISC      */
3064         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
3065         lpfc_disc_illegal,              /* DEVICE_RM       */
3066         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
3067
3068         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
3069         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
3070         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
3071         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
3072         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
3073         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
3074         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
3075         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
3076         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
3077         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
3078         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
3079         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
3080         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
3081 };
3082
3083 int
3084 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3085                         void *arg, uint32_t evt)
3086 {
3087         uint32_t cur_state, rc;
3088         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3089                          uint32_t);
3090         uint32_t got_ndlp = 0;
3091         uint32_t data1;
3092
3093         if (lpfc_nlp_get(ndlp))
3094                 got_ndlp = 1;
3095
3096         cur_state = ndlp->nlp_state;
3097
3098         data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3099                 ((uint32_t)ndlp->nlp_type));
3100         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3101         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3102                          "0211 DSM in event x%x on NPort x%x in "
3103                          "state %d rpi x%x Data: x%x x%x\n",
3104                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3105                          ndlp->nlp_flag, data1);
3106
3107         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3108                  "DSM in:          evt:%d ste:%d did:x%x",
3109                 evt, cur_state, ndlp->nlp_DID);
3110
3111         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3112         rc = (func) (vport, ndlp, arg, evt);
3113
3114         /* DSM out state <rc> on NPort <nlp_DID> */
3115         if (got_ndlp) {
3116                 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3117                         ((uint32_t)ndlp->nlp_type));
3118                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3119                          "0212 DSM out state %d on NPort x%x "
3120                          "rpi x%x Data: x%x x%x\n",
3121                          rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3122                          data1);
3123
3124                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3125                         "DSM out:         ste:%d did:x%x flg:x%x",
3126                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
3127                 /* Decrement the ndlp reference count held for this function */
3128                 lpfc_nlp_put(ndlp);
3129         } else {
3130                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3131                         "0213 DSM out state %d on NPort free\n", rc);
3132
3133                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3134                         "DSM out:         ste:%d did:x%x flg:x%x",
3135                         rc, 0, 0);
3136         }
3137
3138         return rc;
3139 }