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) 2017-2019 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <scsi/scsi.h>
  30 #include <scsi/scsi_device.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport_fc.h>
  33 #include <scsi/fc/fc_fs.h>
  34
  35 #include <linux/nvme-fc-driver.h>
  36
  37 #include "lpfc_hw4.h"
  38 #include "lpfc_hw.h"
  39 #include "lpfc_sli.h"
  40 #include "lpfc_sli4.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc.h"
  44 #include "lpfc_scsi.h"
  45 #include "lpfc_nvme.h"
  46 #include "lpfc_logmsg.h"
  47 #include "lpfc_crtn.h"
  48 #include "lpfc_vport.h"
  49 #include "lpfc_debugfs.h"
  50
  51
  52 /* Called to verify a rcv'ed ADISC was intended for us. */
  53 static int
  54 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  55                  struct lpfc_name *nn, struct lpfc_name *pn)
  56 {
  57         /* First, we MUST have a RPI registered */
  58         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  59                 return 0;
  60
  61         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  62          * table entry for that node.
  63          */
  64         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  65                 return 0;
  66
  67         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  68                 return 0;
  69
  70         /* we match, return success */
  71         return 1;
  72 }
  73
  74 int
  75 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  76                  struct serv_parm *sp, uint32_t class, int flogi)
  77 {
  78         volatile struct serv_parm *hsp = &vport->fc_sparam;
  79         uint16_t hsp_value, ssp_value = 0;
  80
  81         /*
  82          * The receive data field size and buffer-to-buffer receive data field
  83          * size entries are 16 bits but are represented as two 8-bit fields in
  84          * the driver data structure to account for rsvd bits and other control
  85          * bits.  Reconstruct and compare the fields as a 16-bit values before
  86          * correcting the byte values.
  87          */
  88         if (sp->cls1.classValid) {
  89                 if (!flogi) {
  90                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  91                                      hsp->cls1.rcvDataSizeLsb);
  92                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  93                                      sp->cls1.rcvDataSizeLsb);
  94                         if (!ssp_value)
  95                                 goto bad_service_param;
  96                         if (ssp_value > hsp_value) {
  97                                 sp->cls1.rcvDataSizeLsb =
  98                                         hsp->cls1.rcvDataSizeLsb;
  99                                 sp->cls1.rcvDataSizeMsb =
 100                                         hsp->cls1.rcvDataSizeMsb;
 101                         }
 102                 }
 103         } else if (class == CLASS1)
 104                 goto bad_service_param;
 105         if (sp->cls2.classValid) {
 106                 if (!flogi) {
 107                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 108                                      hsp->cls2.rcvDataSizeLsb);
 109                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 110                                      sp->cls2.rcvDataSizeLsb);
 111                         if (!ssp_value)
 112                                 goto bad_service_param;
 113                         if (ssp_value > hsp_value) {
 114                                 sp->cls2.rcvDataSizeLsb =
 115                                         hsp->cls2.rcvDataSizeLsb;
 116                                 sp->cls2.rcvDataSizeMsb =
 117                                         hsp->cls2.rcvDataSizeMsb;
 118                         }
 119                 }
 120         } else if (class == CLASS2)
 121                 goto bad_service_param;
 122         if (sp->cls3.classValid) {
 123                 if (!flogi) {
 124                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 125                                      hsp->cls3.rcvDataSizeLsb);
 126                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 127                                      sp->cls3.rcvDataSizeLsb);
 128                         if (!ssp_value)
 129                                 goto bad_service_param;
 130                         if (ssp_value > hsp_value) {
 131                                 sp->cls3.rcvDataSizeLsb =
 132                                         hsp->cls3.rcvDataSizeLsb;
 133                                 sp->cls3.rcvDataSizeMsb =
 134                                         hsp->cls3.rcvDataSizeMsb;
 135                         }
 136                 }
 137         } else if (class == CLASS3)
 138                 goto bad_service_param;
 139
 140         /*
 141          * Preserve the upper four bits of the MSB from the PLOGI response.
 142          * These bits contain the Buffer-to-Buffer State Change Number
 143          * from the target and need to be passed to the FW.
 144          */
 145         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 146         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 147         if (ssp_value > hsp_value) {
 148                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 149                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 150                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 151         }
 152
 153         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 154         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 155         return 1;
 156 bad_service_param:
 157         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 158                          "0207 Device %x "
 159                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 160                          "invalid service parameters.  Ignoring device.\n",
 161                          ndlp->nlp_DID,
 162                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 163                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 164                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 165                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 166         return 0;
 167 }
 168
 169 static void *
 170 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 171                         struct lpfc_iocbq *rspiocb)
 172 {
 173         struct lpfc_dmabuf *pcmd, *prsp;
 174         uint32_t *lp;
 175         void     *ptr = NULL;
 176         IOCB_t   *irsp;
 177
 178         irsp = &rspiocb->iocb;
 179         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 180
 181         /* For lpfc_els_abort, context2 could be zero'ed to delay
 182          * freeing associated memory till after ABTS completes.
 183          */
 184         if (pcmd) {
 185                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 186                                        list);
 187                 if (prsp) {
 188                         lp = (uint32_t *) prsp->virt;
 189                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 190                 }
 191         } else {
 192                 /* Force ulpStatus error since we are returning NULL ptr */
 193                 if (!(irsp->ulpStatus)) {
 194                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 195                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 196                 }
 197                 ptr = NULL;
 198         }
 199         return ptr;
 200 }
 201
 202
 203
 204 /*
 205  * Free resources / clean up outstanding I/Os
 206  * associated with a LPFC_NODELIST entry. This
 207  * routine effectively results in a "software abort".
 208  */
 209 void
 210 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 211 {
 212         LIST_HEAD(abort_list);
 213         struct lpfc_sli_ring *pring;
 214         struct lpfc_iocbq *iocb, *next_iocb;
 215
 216         pring = lpfc_phba_elsring(phba);
 217
 218         /* In case of error recovery path, we might have a NULL pring here */
 219         if (unlikely(!pring))
 220                 return;
 221
 222         /* Abort outstanding I/O on NPort <nlp_DID> */
 223         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 224                          "2819 Abort outstanding I/O on NPort x%x "
 225                          "Data: x%x x%x x%x\n",
 226                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 227                          ndlp->nlp_rpi);
 228         /* Clean up all fabric IOs first.*/
 229         lpfc_fabric_abort_nport(ndlp);
 230
 231         /*
 232          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 233          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 234          * txcmplq so that the abort operation completes them successfully.
 235          */
 236         spin_lock_irq(&phba->hbalock);
 237         if (phba->sli_rev == LPFC_SLI_REV4)
 238                 spin_lock(&pring->ring_lock);
 239         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 240         /* Add to abort_list on on NDLP match. */
 241                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 242                         list_add_tail(&iocb->dlist, &abort_list);
 243         }
 244         if (phba->sli_rev == LPFC_SLI_REV4)
 245                 spin_unlock(&pring->ring_lock);
 246         spin_unlock_irq(&phba->hbalock);
 247
 248         /* Abort the targeted IOs and remove them from the abort list. */
 249         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 250                         spin_lock_irq(&phba->hbalock);
 251                         list_del_init(&iocb->dlist);
 252                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 253                         spin_unlock_irq(&phba->hbalock);
 254         }
 255
 256         INIT_LIST_HEAD(&abort_list);
 257
 258         /* Now process the txq */
 259         spin_lock_irq(&phba->hbalock);
 260         if (phba->sli_rev == LPFC_SLI_REV4)
 261                 spin_lock(&pring->ring_lock);
 262
 263         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 264                 /* Check to see if iocb matches the nport we are looking for */
 265                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 266                         list_del_init(&iocb->list);
 267                         list_add_tail(&iocb->list, &abort_list);
 268                 }
 269         }
 270
 271         if (phba->sli_rev == LPFC_SLI_REV4)
 272                 spin_unlock(&pring->ring_lock);
 273         spin_unlock_irq(&phba->hbalock);
 274
 275         /* Cancel all the IOCBs from the completions list */
 276         lpfc_sli_cancel_iocbs(phba, &abort_list,
 277                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 278
 279         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 280 }
 281
 282 static int
 283 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 284                struct lpfc_iocbq *cmdiocb)
 285 {
 286         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 287         struct lpfc_hba    *phba = vport->phba;
 288         struct lpfc_dmabuf *pcmd;
 289         uint64_t nlp_portwwn = 0;
 290         uint32_t *lp;
 291         IOCB_t *icmd;
 292         struct serv_parm *sp;
 293         uint32_t ed_tov;
 294         LPFC_MBOXQ_t *mbox;
 295         struct ls_rjt stat;
 296         uint32_t vid, flag;
 297         int rc;
 298
 299         memset(&stat, 0, sizeof (struct ls_rjt));
 300         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 301         lp = (uint32_t *) pcmd->virt;
 302         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 303         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 304                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 305                                  "0140 PLOGI Reject: invalid nname\n");
 306                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 307                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 308                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 309                         NULL);
 310                 return 0;
 311         }
 312         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 313                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 314                                  "0141 PLOGI Reject: invalid pname\n");
 315                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 316                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 317                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 318                         NULL);
 319                 return 0;
 320         }
 321
 322         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 323         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 324                 /* Reject this request because invalid parameters */
 325                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 326                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 327                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 328                         NULL);
 329                 return 0;
 330         }
 331         icmd = &cmdiocb->iocb;
 332
 333         /* PLOGI chkparm OK */
 334         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 335                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 336                          "x%x x%x x%x\n",
 337                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 338                          ndlp->nlp_rpi, vport->port_state,
 339                          vport->fc_flag);
 340
 341         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 342                 ndlp->nlp_fcp_info |= CLASS2;
 343         else
 344                 ndlp->nlp_fcp_info |= CLASS3;
 345
 346         ndlp->nlp_class_sup = 0;
 347         if (sp->cls1.classValid)
 348                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 349         if (sp->cls2.classValid)
 350                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 351         if (sp->cls3.classValid)
 352                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 353         if (sp->cls4.classValid)
 354                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 355         ndlp->nlp_maxframe =
 356                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 357
 358         /* if already logged in, do implicit logout */
 359         switch (ndlp->nlp_state) {
 360         case  NLP_STE_NPR_NODE:
 361                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 362                         break;
 363         case  NLP_STE_REG_LOGIN_ISSUE:
 364         case  NLP_STE_PRLI_ISSUE:
 365         case  NLP_STE_UNMAPPED_NODE:
 366         case  NLP_STE_MAPPED_NODE:
 367                 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
 368                  * For target mode, execute implicit logo.
 369                  * Fabric nodes go into NPR.
 370                  */
 371                 if (!(ndlp->nlp_type & NLP_FABRIC) &&
 372                     !(phba->nvmet_support)) {
 373                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 374                                          ndlp, NULL);
 375                         return 1;
 376                 }
 377                 if (nlp_portwwn != 0 &&
 378                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 379                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 380                                          "0143 PLOGI recv'd from DID: x%x "
 381                                          "WWPN changed: old %llx new %llx\n",
 382                                          ndlp->nlp_DID,
 383                                          (unsigned long long)nlp_portwwn,
 384                                          (unsigned long long)
 385                                          wwn_to_u64(sp->portName.u.wwn));
 386
 387                 ndlp->nlp_prev_state = ndlp->nlp_state;
 388                 /* rport needs to be unregistered first */
 389                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 390                 break;
 391         }
 392
 393         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 394         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
 395         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 396         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 397
 398         /* Check for Nport to NPort pt2pt protocol */
 399         if ((vport->fc_flag & FC_PT2PT) &&
 400             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 401                 /* rcv'ed PLOGI decides what our NPortId will be */
 402                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 403
 404                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 405                 if (sp->cmn.edtovResolution) {
 406                         /* E_D_TOV ticks are in nanoseconds */
 407                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 408                 }
 409
 410                 /*
 411                  * For pt-to-pt, use the larger EDTOV
 412                  * RATOV = 2 * EDTOV
 413                  */
 414                 if (ed_tov > phba->fc_edtov)
 415                         phba->fc_edtov = ed_tov;
 416                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 417
 418                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 419
 420                 /* Issue config_link / reg_vfi to account for updated TOV's */
 421
 422                 if (phba->sli_rev == LPFC_SLI_REV4)
 423                         lpfc_issue_reg_vfi(vport);
 424                 else {
 425                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 426                         if (mbox == NULL)
 427                                 goto out;
 428                         lpfc_config_link(phba, mbox);
 429                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 430                         mbox->vport = vport;
 431                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 432                         if (rc == MBX_NOT_FINISHED) {
 433                                 mempool_free(mbox, phba->mbox_mem_pool);
 434                                 goto out;
 435                         }
 436                 }
 437
 438                 lpfc_can_disctmo(vport);
 439         }
 440
 441         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
 442         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
 443             sp->cmn.valid_vendor_ver_level) {
 444                 vid = be32_to_cpu(sp->un.vv.vid);
 445                 flag = be32_to_cpu(sp->un.vv.flags);
 446                 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
 447                         ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
 448         }
 449
 450         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 451         if (!mbox)
 452                 goto out;
 453
 454         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 455         if (phba->sli_rev == LPFC_SLI_REV4)
 456                 lpfc_unreg_rpi(vport, ndlp);
 457
 458         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 459                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 460         if (rc) {
 461                 mempool_free(mbox, phba->mbox_mem_pool);
 462                 goto out;
 463         }
 464
 465         /* ACC PLOGI rsp command needs to execute first,
 466          * queue this mbox command to be processed later.
 467          */
 468         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 469         /*
 470          * mbox->ctx_ndlp = lpfc_nlp_get(ndlp) deferred until mailbox
 471          * command issued in lpfc_cmpl_els_acc().
 472          */
 473         mbox->vport = vport;
 474         spin_lock_irq(shost->host_lock);
 475         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 476         spin_unlock_irq(shost->host_lock);
 477
 478         /*
 479          * If there is an outstanding PLOGI issued, abort it before
 480          * sending ACC rsp for received PLOGI. If pending plogi
 481          * is not canceled here, the plogi will be rejected by
 482          * remote port and will be retried. On a configuration with
 483          * single discovery thread, this will cause a huge delay in
 484          * discovery. Also this will cause multiple state machines
 485          * running in parallel for this node.
 486          */
 487         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 488                 /* software abort outstanding PLOGI */
 489                 lpfc_els_abort(phba, ndlp);
 490         }
 491
 492         if ((vport->port_type == LPFC_NPIV_PORT &&
 493              vport->cfg_restrict_login)) {
 494
 495                 /* In order to preserve RPIs, we want to cleanup
 496                  * the default RPI the firmware created to rcv
 497                  * this ELS request. The only way to do this is
 498                  * to register, then unregister the RPI.
 499                  */
 500                 spin_lock_irq(shost->host_lock);
 501                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 502                 spin_unlock_irq(shost->host_lock);
 503                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 504                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 505                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 506                         ndlp, mbox);
 507                 if (rc)
 508                         mempool_free(mbox, phba->mbox_mem_pool);
 509                 return 1;
 510         }
 511         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 512         if (rc)
 513                 mempool_free(mbox, phba->mbox_mem_pool);
 514         return 1;
 515 out:
 516         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 517         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 518         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 519         return 0;
 520 }
 521
 522 /**
 523  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 524  * @phba: pointer to lpfc hba data structure.
 525  * @mboxq: pointer to mailbox object
 526  *
 527  * This routine is invoked to issue a completion to a rcv'ed
 528  * ADISC or PDISC after the paused RPI has been resumed.
 529  **/
 530 static void
 531 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 532 {
 533         struct lpfc_vport *vport;
 534         struct lpfc_iocbq *elsiocb;
 535         struct lpfc_nodelist *ndlp;
 536         uint32_t cmd;
 537
 538         elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
 539         ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
 540         vport = mboxq->vport;
 541         cmd = elsiocb->drvrTimeout;
 542
 543         if (cmd == ELS_CMD_ADISC) {
 544                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 545         } else {
 546                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 547                         ndlp, NULL);
 548         }
 549         kfree(elsiocb);
 550         mempool_free(mboxq, phba->mbox_mem_pool);
 551 }
 552
 553 static int
 554 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 555                 struct lpfc_iocbq *cmdiocb)
 556 {
 557         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 558         struct lpfc_iocbq  *elsiocb;
 559         struct lpfc_dmabuf *pcmd;
 560         struct serv_parm   *sp;
 561         struct lpfc_name   *pnn, *ppn;
 562         struct ls_rjt stat;
 563         ADISC *ap;
 564         IOCB_t *icmd;
 565         uint32_t *lp;
 566         uint32_t cmd;
 567
 568         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 569         lp = (uint32_t *) pcmd->virt;
 570
 571         cmd = *lp++;
 572         if (cmd == ELS_CMD_ADISC) {
 573                 ap = (ADISC *) lp;
 574                 pnn = (struct lpfc_name *) & ap->nodeName;
 575                 ppn = (struct lpfc_name *) & ap->portName;
 576         } else {
 577                 sp = (struct serv_parm *) lp;
 578                 pnn = (struct lpfc_name *) & sp->nodeName;
 579                 ppn = (struct lpfc_name *) & sp->portName;
 580         }
 581
 582         icmd = &cmdiocb->iocb;
 583         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 584
 585                 /*
 586                  * As soon as  we send ACC, the remote NPort can
 587                  * start sending us data. Thus, for SLI4 we must
 588                  * resume the RPI before the ACC goes out.
 589                  */
 590                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 591                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 592                                 GFP_KERNEL);
 593                         if (elsiocb) {
 594
 595                                 /* Save info from cmd IOCB used in rsp */
 596                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 597                                         sizeof(struct lpfc_iocbq));
 598
 599                                 /* Save the ELS cmd */
 600                                 elsiocb->drvrTimeout = cmd;
 601
 602                                 lpfc_sli4_resume_rpi(ndlp,
 603                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 604                                 goto out;
 605                         }
 606                 }
 607
 608                 if (cmd == ELS_CMD_ADISC) {
 609                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 610                 } else {
 611                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 612                                 ndlp, NULL);
 613                 }
 614 out:
 615                 /* If we are authenticated, move to the proper state */
 616                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 617                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 618                 else
 619                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 620
 621                 return 1;
 622         }
 623         /* Reject this request because invalid parameters */
 624         stat.un.b.lsRjtRsvd0 = 0;
 625         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 626         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 627         stat.un.b.vendorUnique = 0;
 628         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 629
 630         /* 1 sec timeout */
 631         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 632
 633         spin_lock_irq(shost->host_lock);
 634         ndlp->nlp_flag |= NLP_DELAY_TMO;
 635         spin_unlock_irq(shost->host_lock);
 636         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 637         ndlp->nlp_prev_state = ndlp->nlp_state;
 638         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 639         return 0;
 640 }
 641
 642 static int
 643 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 644               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 645 {
 646         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 647         struct lpfc_hba    *phba = vport->phba;
 648         struct lpfc_vport **vports;
 649         int i, active_vlink_present = 0 ;
 650
 651         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 652         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 653          * PLOGIs during LOGO storms from a device.
 654          */
 655         spin_lock_irq(shost->host_lock);
 656         ndlp->nlp_flag |= NLP_LOGO_ACC;
 657         spin_unlock_irq(shost->host_lock);
 658         if (els_cmd == ELS_CMD_PRLO)
 659                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 660         else
 661                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 662         if (ndlp->nlp_DID == Fabric_DID) {
 663                 if (vport->port_state <= LPFC_FDISC)
 664                         goto out;
 665                 lpfc_linkdown_port(vport);
 666                 spin_lock_irq(shost->host_lock);
 667                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 668                 spin_unlock_irq(shost->host_lock);
 669                 vports = lpfc_create_vport_work_array(phba);
 670                 if (vports) {
 671                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 672                                         i++) {
 673                                 if ((!(vports[i]->fc_flag &
 674                                         FC_VPORT_LOGO_RCVD)) &&
 675                                         (vports[i]->port_state > LPFC_FDISC)) {
 676                                         active_vlink_present = 1;
 677                                         break;
 678                                 }
 679                         }
 680                         lpfc_destroy_vport_work_array(phba, vports);
 681                 }
 682
 683                 /*
 684                  * Don't re-instantiate if vport is marked for deletion.
 685                  * If we are here first then vport_delete is going to wait
 686                  * for discovery to complete.
 687                  */
 688                 if (!(vport->load_flag & FC_UNLOADING) &&
 689                                         active_vlink_present) {
 690                         /*
 691                          * If there are other active VLinks present,
 692                          * re-instantiate the Vlink using FDISC.
 693                          */
 694                         mod_timer(&ndlp->nlp_delayfunc,
 695                                   jiffies + msecs_to_jiffies(1000));
 696                         spin_lock_irq(shost->host_lock);
 697                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 698                         spin_unlock_irq(shost->host_lock);
 699                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 700                         vport->port_state = LPFC_FDISC;
 701                 } else {
 702                         spin_lock_irq(shost->host_lock);
 703                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 704                         spin_unlock_irq(shost->host_lock);
 705                         lpfc_retry_pport_discovery(phba);
 706                 }
 707         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 708                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 709                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 710                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 711                 /* Only try to re-login if this is NOT a Fabric Node */
 712                 mod_timer(&ndlp->nlp_delayfunc,
 713                           jiffies + msecs_to_jiffies(1000 * 1));
 714                 spin_lock_irq(shost->host_lock);
 715                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 716                 spin_unlock_irq(shost->host_lock);
 717
 718                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 719         }
 720 out:
 721         ndlp->nlp_prev_state = ndlp->nlp_state;
 722         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 723
 724         spin_lock_irq(shost->host_lock);
 725         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 726         spin_unlock_irq(shost->host_lock);
 727         /* The driver has to wait until the ACC completes before it continues
 728          * processing the LOGO.  The action will resume in
 729          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 730          * unreg_login, the driver waits so the ACC does not get aborted.
 731          */
 732         return 0;
 733 }
 734
 735 static uint32_t
 736 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
 737                             struct lpfc_nodelist *ndlp,
 738                             struct lpfc_iocbq *cmdiocb)
 739 {
 740         struct ls_rjt stat;
 741         uint32_t *payload;
 742         uint32_t cmd;
 743
 744         payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
 745         cmd = *payload;
 746         if (vport->phba->nvmet_support) {
 747                 /* Must be a NVME PRLI */
 748                 if (cmd ==  ELS_CMD_PRLI)
 749                         goto out;
 750         } else {
 751                 /* Initiator mode. */
 752                 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
 753                         goto out;
 754         }
 755         return 1;
 756 out:
 757         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
 758                          "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
 759                          "state x%x flags x%x\n",
 760                          cmd, ndlp->nlp_rpi, ndlp->nlp_state,
 761                          ndlp->nlp_flag);
 762         memset(&stat, 0, sizeof(struct ls_rjt));
 763         stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
 764         stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
 765         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 766                             ndlp, NULL);
 767         return 0;
 768 }
 769
 770 static void
 771 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 772               struct lpfc_iocbq *cmdiocb)
 773 {
 774         struct lpfc_hba  *phba = vport->phba;
 775         struct lpfc_dmabuf *pcmd;
 776         uint32_t *lp;
 777         PRLI *npr;
 778         struct fc_rport *rport = ndlp->rport;
 779         u32 roles;
 780
 781         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 782         lp = (uint32_t *) pcmd->virt;
 783         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 784
 785         if ((npr->prliType == PRLI_FCP_TYPE) ||
 786             (npr->prliType == PRLI_NVME_TYPE)) {
 787                 if (npr->initiatorFunc) {
 788                         if (npr->prliType == PRLI_FCP_TYPE)
 789                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 790                         if (npr->prliType == PRLI_NVME_TYPE)
 791                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 792                 }
 793                 if (npr->targetFunc) {
 794                         if (npr->prliType == PRLI_FCP_TYPE)
 795                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 796                         if (npr->prliType == PRLI_NVME_TYPE)
 797                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 798                         if (npr->writeXferRdyDis)
 799                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 800                 }
 801                 if (npr->Retry)
 802                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 803
 804                 /* If this driver is in nvme target mode, set the ndlp's fc4
 805                  * type to NVME provided the PRLI response claims NVME FC4
 806                  * type.  Target mode does not issue gft_id so doesn't get
 807                  * the fc4 type set until now.
 808                  */
 809                 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
 810                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 811                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 812                 }
 813                 if (npr->prliType == PRLI_FCP_TYPE)
 814                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
 815         }
 816         if (rport) {
 817                 /* We need to update the rport role values */
 818                 roles = FC_RPORT_ROLE_UNKNOWN;
 819                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 820                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 821                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 822                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 823
 824                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 825                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 826                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 827
 828                 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 829                         fc_remote_port_rolechg(rport, roles);
 830         }
 831 }
 832
 833 static uint32_t
 834 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 835 {
 836         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 837
 838         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 839                 spin_lock_irq(shost->host_lock);
 840                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 841                 spin_unlock_irq(shost->host_lock);
 842                 return 0;
 843         }
 844
 845         if (!(vport->fc_flag & FC_PT2PT)) {
 846                 /* Check config parameter use-adisc or FCP-2 */
 847                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 848                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 849                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 850                         spin_lock_irq(shost->host_lock);
 851                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 852                         spin_unlock_irq(shost->host_lock);
 853                         return 1;
 854                 }
 855         }
 856
 857         spin_lock_irq(shost->host_lock);
 858         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 859         spin_unlock_irq(shost->host_lock);
 860         lpfc_unreg_rpi(vport, ndlp);
 861         return 0;
 862 }
 863
 864 /**
 865  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 866  * @phba : Pointer to lpfc_hba structure.
 867  * @vport: Pointer to lpfc_vport structure.
 868  * @rpi  : rpi to be release.
 869  *
 870  * This function will send a unreg_login mailbox command to the firmware
 871  * to release a rpi.
 872  **/
 873 void
 874 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
 875                  struct lpfc_nodelist *ndlp, uint16_t rpi)
 876 {
 877         LPFC_MBOXQ_t *pmb;
 878         int rc;
 879
 880         /* If there is already an UNREG in progress for this ndlp,
 881          * no need to queue up another one.
 882          */
 883         if (ndlp->nlp_flag & NLP_UNREG_INP) {
 884                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 885                                  "1435 release_rpi SKIP UNREG x%x on "
 886                                  "NPort x%x deferred x%x  flg x%x "
 887                                  "Data: %p\n",
 888                                  ndlp->nlp_rpi, ndlp->nlp_DID,
 889                                  ndlp->nlp_defer_did,
 890                                  ndlp->nlp_flag, ndlp);
 891                 return;
 892         }
 893
 894         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 895                         GFP_KERNEL);
 896         if (!pmb)
 897                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 898                         "2796 mailbox memory allocation failed \n");
 899         else {
 900                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 901                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 902                 pmb->vport = vport;
 903                 pmb->ctx_ndlp = ndlp;
 904
 905                 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
 906                     (!(vport->fc_flag & FC_OFFLINE_MODE)))
 907                         ndlp->nlp_flag |= NLP_UNREG_INP;
 908
 909                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 910                                  "1437 release_rpi UNREG x%x "
 911                                  "on NPort x%x flg x%x\n",
 912                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
 913
 914                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 915                 if (rc == MBX_NOT_FINISHED)
 916                         mempool_free(pmb, phba->mbox_mem_pool);
 917         }
 918 }
 919
 920 static uint32_t
 921 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 922                   void *arg, uint32_t evt)
 923 {
 924         struct lpfc_hba *phba;
 925         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 926         uint16_t rpi;
 927
 928         phba = vport->phba;
 929         /* Release the RPI if reglogin completing */
 930         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 931                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 932                 (!pmb->u.mb.mbxStatus)) {
 933                 rpi = pmb->u.mb.un.varWords[0];
 934                 lpfc_release_rpi(phba, vport, ndlp, rpi);
 935         }
 936         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 937                          "0271 Illegal State Transition: node x%x "
 938                          "event x%x, state x%x Data: x%x x%x\n",
 939                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 940                          ndlp->nlp_flag);
 941         return ndlp->nlp_state;
 942 }
 943
 944 static uint32_t
 945 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 946                   void *arg, uint32_t evt)
 947 {
 948         /* This transition is only legal if we previously
 949          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 950          * working on the same NPortID, do nothing for this thread
 951          * to stop it.
 952          */
 953         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 954                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 955                          "0272 Illegal State Transition: node x%x "
 956                          "event x%x, state x%x Data: x%x x%x\n",
 957                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 958                          ndlp->nlp_flag);
 959         }
 960         return ndlp->nlp_state;
 961 }
 962
 963 /* Start of Discovery State Machine routines */
 964
 965 static uint32_t
 966 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 967                            void *arg, uint32_t evt)
 968 {
 969         struct lpfc_iocbq *cmdiocb;
 970
 971         cmdiocb = (struct lpfc_iocbq *) arg;
 972
 973         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 974                 return ndlp->nlp_state;
 975         }
 976         return NLP_STE_FREED_NODE;
 977 }
 978
 979 static uint32_t
 980 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 981                          void *arg, uint32_t evt)
 982 {
 983         lpfc_issue_els_logo(vport, ndlp, 0);
 984         return ndlp->nlp_state;
 985 }
 986
 987 static uint32_t
 988 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 989                           void *arg, uint32_t evt)
 990 {
 991         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 992         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 993
 994         spin_lock_irq(shost->host_lock);
 995         ndlp->nlp_flag |= NLP_LOGO_ACC;
 996         spin_unlock_irq(shost->host_lock);
 997         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 998
 999         return ndlp->nlp_state;
1000 }
1001
1002 static uint32_t
1003 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1004                            void *arg, uint32_t evt)
1005 {
1006         return NLP_STE_FREED_NODE;
1007 }
1008
1009 static uint32_t
1010 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1011                            void *arg, uint32_t evt)
1012 {
1013         return NLP_STE_FREED_NODE;
1014 }
1015
1016 static uint32_t
1017 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1018                         struct lpfc_nodelist *ndlp,
1019                            void *arg, uint32_t evt)
1020 {
1021         return ndlp->nlp_state;
1022 }
1023
1024 static uint32_t
1025 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1026                            void *arg, uint32_t evt)
1027 {
1028         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1029         struct lpfc_hba   *phba = vport->phba;
1030         struct lpfc_iocbq *cmdiocb = arg;
1031         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1032         uint32_t *lp = (uint32_t *) pcmd->virt;
1033         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1034         struct ls_rjt stat;
1035         int port_cmp;
1036
1037         memset(&stat, 0, sizeof (struct ls_rjt));
1038
1039         /* For a PLOGI, we only accept if our portname is less
1040          * than the remote portname.
1041          */
1042         phba->fc_stat.elsLogiCol++;
1043         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1044                           sizeof(struct lpfc_name));
1045
1046         if (port_cmp >= 0) {
1047                 /* Reject this request because the remote node will accept
1048                    ours */
1049                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1050                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1051                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1052                         NULL);
1053         } else {
1054                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1055                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1056                     (vport->num_disc_nodes)) {
1057                         spin_lock_irq(shost->host_lock);
1058                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1059                         spin_unlock_irq(shost->host_lock);
1060                         /* Check if there are more PLOGIs to be sent */
1061                         lpfc_more_plogi(vport);
1062                         if (vport->num_disc_nodes == 0) {
1063                                 spin_lock_irq(shost->host_lock);
1064                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1065                                 spin_unlock_irq(shost->host_lock);
1066                                 lpfc_can_disctmo(vport);
1067                                 lpfc_end_rscn(vport);
1068                         }
1069                 }
1070         } /* If our portname was less */
1071
1072         return ndlp->nlp_state;
1073 }
1074
1075 static uint32_t
1076 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1077                           void *arg, uint32_t evt)
1078 {
1079         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1080         struct ls_rjt     stat;
1081
1082         memset(&stat, 0, sizeof (struct ls_rjt));
1083         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1084         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1085         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1086         return ndlp->nlp_state;
1087 }
1088
1089 static uint32_t
1090 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1091                           void *arg, uint32_t evt)
1092 {
1093         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1094
1095         /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1096         if (vport->phba->sli_rev == LPFC_SLI_REV3)
1097                 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1098                                 /* software abort outstanding PLOGI */
1099         lpfc_els_abort(vport->phba, ndlp);
1100
1101         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1102         return ndlp->nlp_state;
1103 }
1104
1105 static uint32_t
1106 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1107                          void *arg, uint32_t evt)
1108 {
1109         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1110         struct lpfc_hba   *phba = vport->phba;
1111         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1112
1113         /* software abort outstanding PLOGI */
1114         lpfc_els_abort(phba, ndlp);
1115
1116         if (evt == NLP_EVT_RCV_LOGO) {
1117                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1118         } else {
1119                 lpfc_issue_els_logo(vport, ndlp, 0);
1120         }
1121
1122         /* Put ndlp in npr state set plogi timer for 1 sec */
1123         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1124         spin_lock_irq(shost->host_lock);
1125         ndlp->nlp_flag |= NLP_DELAY_TMO;
1126         spin_unlock_irq(shost->host_lock);
1127         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1128         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1129         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1130
1131         return ndlp->nlp_state;
1132 }
1133
1134 static uint32_t
1135 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1136                             struct lpfc_nodelist *ndlp,
1137                             void *arg,
1138                             uint32_t evt)
1139 {
1140         struct lpfc_hba    *phba = vport->phba;
1141         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1142         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1143         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1144         uint32_t *lp;
1145         uint32_t vid, flag;
1146         IOCB_t *irsp;
1147         struct serv_parm *sp;
1148         uint32_t ed_tov;
1149         LPFC_MBOXQ_t *mbox;
1150         int rc;
1151
1152         cmdiocb = (struct lpfc_iocbq *) arg;
1153         rspiocb = cmdiocb->context_un.rsp_iocb;
1154
1155         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1156                 /* Recovery from PLOGI collision logic */
1157                 return ndlp->nlp_state;
1158         }
1159
1160         irsp = &rspiocb->iocb;
1161
1162         if (irsp->ulpStatus)
1163                 goto out;
1164
1165         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1166
1167         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1168         if (!prsp)
1169                 goto out;
1170
1171         lp = (uint32_t *) prsp->virt;
1172         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1173
1174         /* Some switches have FDMI servers returning 0 for WWN */
1175         if ((ndlp->nlp_DID != FDMI_DID) &&
1176                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1177                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1178                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1179                                  "0142 PLOGI RSP: Invalid WWN.\n");
1180                 goto out;
1181         }
1182         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1183                 goto out;
1184         /* PLOGI chkparm OK */
1185         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1186                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1187                          ndlp->nlp_DID, ndlp->nlp_state,
1188                          ndlp->nlp_flag, ndlp->nlp_rpi);
1189         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1190                 ndlp->nlp_fcp_info |= CLASS2;
1191         else
1192                 ndlp->nlp_fcp_info |= CLASS3;
1193
1194         ndlp->nlp_class_sup = 0;
1195         if (sp->cls1.classValid)
1196                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1197         if (sp->cls2.classValid)
1198                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1199         if (sp->cls3.classValid)
1200                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1201         if (sp->cls4.classValid)
1202                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1203         ndlp->nlp_maxframe =
1204                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1205
1206         if ((vport->fc_flag & FC_PT2PT) &&
1207             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1208                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1209                 if (sp->cmn.edtovResolution) {
1210                         /* E_D_TOV ticks are in nanoseconds */
1211                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1212                 }
1213
1214                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1215                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1216                     sp->cmn.valid_vendor_ver_level) {
1217                         vid = be32_to_cpu(sp->un.vv.vid);
1218                         flag = be32_to_cpu(sp->un.vv.flags);
1219                         if ((vid == LPFC_VV_EMLX_ID) &&
1220                             (flag & LPFC_VV_SUPPRESS_RSP))
1221                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1222                 }
1223
1224                 /*
1225                  * Use the larger EDTOV
1226                  * RATOV = 2 * EDTOV for pt-to-pt
1227                  */
1228                 if (ed_tov > phba->fc_edtov)
1229                         phba->fc_edtov = ed_tov;
1230                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1231
1232                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1233
1234                 /* Issue config_link / reg_vfi to account for updated TOV's */
1235                 if (phba->sli_rev == LPFC_SLI_REV4) {
1236                         lpfc_issue_reg_vfi(vport);
1237                 } else {
1238                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1239                         if (!mbox) {
1240                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1241                                                  "0133 PLOGI: no memory "
1242                                                  "for config_link "
1243                                                  "Data: x%x x%x x%x x%x\n",
1244                                                  ndlp->nlp_DID, ndlp->nlp_state,
1245                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1246                                 goto out;
1247                         }
1248
1249                         lpfc_config_link(phba, mbox);
1250
1251                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1252                         mbox->vport = vport;
1253                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1254                         if (rc == MBX_NOT_FINISHED) {
1255                                 mempool_free(mbox, phba->mbox_mem_pool);
1256                                 goto out;
1257                         }
1258                 }
1259         }
1260
1261         lpfc_unreg_rpi(vport, ndlp);
1262
1263         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1264         if (!mbox) {
1265                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1266                                  "0018 PLOGI: no memory for reg_login "
1267                                  "Data: x%x x%x x%x x%x\n",
1268                                  ndlp->nlp_DID, ndlp->nlp_state,
1269                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1270                 goto out;
1271         }
1272
1273         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1274                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1275                 switch (ndlp->nlp_DID) {
1276                 case NameServer_DID:
1277                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1278                         break;
1279                 case FDMI_DID:
1280                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1281                         break;
1282                 default:
1283                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1284                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1285                 }
1286                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1287                 mbox->vport = vport;
1288                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1289                     != MBX_NOT_FINISHED) {
1290                         lpfc_nlp_set_state(vport, ndlp,
1291                                            NLP_STE_REG_LOGIN_ISSUE);
1292                         return ndlp->nlp_state;
1293                 }
1294                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1295                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1296                 /* decrement node reference count to the failed mbox
1297                  * command
1298                  */
1299                 lpfc_nlp_put(ndlp);
1300                 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1301                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1302                 kfree(mp);
1303                 mempool_free(mbox, phba->mbox_mem_pool);
1304
1305                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1306                                  "0134 PLOGI: cannot issue reg_login "
1307                                  "Data: x%x x%x x%x x%x\n",
1308                                  ndlp->nlp_DID, ndlp->nlp_state,
1309                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1310         } else {
1311                 mempool_free(mbox, phba->mbox_mem_pool);
1312
1313                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1314                                  "0135 PLOGI: cannot format reg_login "
1315                                  "Data: x%x x%x x%x x%x\n",
1316                                  ndlp->nlp_DID, ndlp->nlp_state,
1317                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1318         }
1319
1320
1321 out:
1322         if (ndlp->nlp_DID == NameServer_DID) {
1323                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1324                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1325                                  "0261 Cannot Register NameServer login\n");
1326         }
1327
1328         /*
1329         ** In case the node reference counter does not go to zero, ensure that
1330         ** the stale state for the node is not processed.
1331         */
1332
1333         ndlp->nlp_prev_state = ndlp->nlp_state;
1334         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1335         spin_lock_irq(shost->host_lock);
1336         ndlp->nlp_flag |= NLP_DEFER_RM;
1337         spin_unlock_irq(shost->host_lock);
1338         return NLP_STE_FREED_NODE;
1339 }
1340
1341 static uint32_t
1342 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1343                            void *arg, uint32_t evt)
1344 {
1345         return ndlp->nlp_state;
1346 }
1347
1348 static uint32_t
1349 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1350         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1351 {
1352         struct lpfc_hba *phba;
1353         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1354         MAILBOX_t *mb = &pmb->u.mb;
1355         uint16_t rpi;
1356
1357         phba = vport->phba;
1358         /* Release the RPI */
1359         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1360                 !mb->mbxStatus) {
1361                 rpi = pmb->u.mb.un.varWords[0];
1362                 lpfc_release_rpi(phba, vport, ndlp, rpi);
1363         }
1364         return ndlp->nlp_state;
1365 }
1366
1367 static uint32_t
1368 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1369                            void *arg, uint32_t evt)
1370 {
1371         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1372
1373         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1374                 spin_lock_irq(shost->host_lock);
1375                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1376                 spin_unlock_irq(shost->host_lock);
1377                 return ndlp->nlp_state;
1378         } else {
1379                 /* software abort outstanding PLOGI */
1380                 lpfc_els_abort(vport->phba, ndlp);
1381
1382                 lpfc_drop_node(vport, ndlp);
1383                 return NLP_STE_FREED_NODE;
1384         }
1385 }
1386
1387 static uint32_t
1388 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1389                               struct lpfc_nodelist *ndlp,
1390                               void *arg,
1391                               uint32_t evt)
1392 {
1393         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1394         struct lpfc_hba  *phba = vport->phba;
1395
1396         /* Don't do anything that will mess up processing of the
1397          * previous RSCN.
1398          */
1399         if (vport->fc_flag & FC_RSCN_DEFERRED)
1400                 return ndlp->nlp_state;
1401
1402         /* software abort outstanding PLOGI */
1403         lpfc_els_abort(phba, ndlp);
1404
1405         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1406         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1407         spin_lock_irq(shost->host_lock);
1408         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1409         spin_unlock_irq(shost->host_lock);
1410
1411         return ndlp->nlp_state;
1412 }
1413
1414 static uint32_t
1415 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1416                            void *arg, uint32_t evt)
1417 {
1418         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1419         struct lpfc_hba   *phba = vport->phba;
1420         struct lpfc_iocbq *cmdiocb;
1421
1422         /* software abort outstanding ADISC */
1423         lpfc_els_abort(phba, ndlp);
1424
1425         cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1428                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1429                         spin_lock_irq(shost->host_lock);
1430                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1431                         spin_unlock_irq(shost->host_lock);
1432                         if (vport->num_disc_nodes)
1433                                 lpfc_more_adisc(vport);
1434                 }
1435                 return ndlp->nlp_state;
1436         }
1437         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1438         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1439         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1440
1441         return ndlp->nlp_state;
1442 }
1443
1444 static uint32_t
1445 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1446                           void *arg, uint32_t evt)
1447 {
1448         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1449
1450         if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1451                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1452         return ndlp->nlp_state;
1453 }
1454
1455 static uint32_t
1456 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1457                           void *arg, uint32_t evt)
1458 {
1459         struct lpfc_hba *phba = vport->phba;
1460         struct lpfc_iocbq *cmdiocb;
1461
1462         cmdiocb = (struct lpfc_iocbq *) arg;
1463
1464         /* software abort outstanding ADISC */
1465         lpfc_els_abort(phba, ndlp);
1466
1467         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1468         return ndlp->nlp_state;
1469 }
1470
1471 static uint32_t
1472 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1473                             struct lpfc_nodelist *ndlp,
1474                             void *arg, uint32_t evt)
1475 {
1476         struct lpfc_iocbq *cmdiocb;
1477
1478         cmdiocb = (struct lpfc_iocbq *) arg;
1479
1480         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1481         return ndlp->nlp_state;
1482 }
1483
1484 static uint32_t
1485 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1486                           void *arg, uint32_t evt)
1487 {
1488         struct lpfc_iocbq *cmdiocb;
1489
1490         cmdiocb = (struct lpfc_iocbq *) arg;
1491
1492         /* Treat like rcv logo */
1493         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1494         return ndlp->nlp_state;
1495 }
1496
1497 static uint32_t
1498 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1499                             struct lpfc_nodelist *ndlp,
1500                             void *arg, uint32_t evt)
1501 {
1502         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1503         struct lpfc_hba   *phba = vport->phba;
1504         struct lpfc_iocbq *cmdiocb, *rspiocb;
1505         IOCB_t *irsp;
1506         ADISC *ap;
1507         int rc;
1508
1509         cmdiocb = (struct lpfc_iocbq *) arg;
1510         rspiocb = cmdiocb->context_un.rsp_iocb;
1511
1512         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1513         irsp = &rspiocb->iocb;
1514
1515         if ((irsp->ulpStatus) ||
1516             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1517                 /* 1 sec timeout */
1518                 mod_timer(&ndlp->nlp_delayfunc,
1519                           jiffies + msecs_to_jiffies(1000));
1520                 spin_lock_irq(shost->host_lock);
1521                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1522                 spin_unlock_irq(shost->host_lock);
1523                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1524
1525                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1526                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1527
1528                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1529                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1530                 lpfc_unreg_rpi(vport, ndlp);
1531                 return ndlp->nlp_state;
1532         }
1533
1534         if (phba->sli_rev == LPFC_SLI_REV4) {
1535                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1536                 if (rc) {
1537                         /* Stay in state and retry. */
1538                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1539                         return ndlp->nlp_state;
1540                 }
1541         }
1542
1543         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1544                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1545                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1546         } else {
1547                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1548                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1549         }
1550
1551         return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1556                            void *arg, uint32_t evt)
1557 {
1558         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1559
1560         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1561                 spin_lock_irq(shost->host_lock);
1562                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1563                 spin_unlock_irq(shost->host_lock);
1564                 return ndlp->nlp_state;
1565         } else {
1566                 /* software abort outstanding ADISC */
1567                 lpfc_els_abort(vport->phba, ndlp);
1568
1569                 lpfc_drop_node(vport, ndlp);
1570                 return NLP_STE_FREED_NODE;
1571         }
1572 }
1573
1574 static uint32_t
1575 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1576                               struct lpfc_nodelist *ndlp,
1577                               void *arg,
1578                               uint32_t evt)
1579 {
1580         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1581         struct lpfc_hba  *phba = vport->phba;
1582
1583         /* Don't do anything that will mess up processing of the
1584          * previous RSCN.
1585          */
1586         if (vport->fc_flag & FC_RSCN_DEFERRED)
1587                 return ndlp->nlp_state;
1588
1589         /* software abort outstanding ADISC */
1590         lpfc_els_abort(phba, ndlp);
1591
1592         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1593         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1594         spin_lock_irq(shost->host_lock);
1595         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1596         spin_unlock_irq(shost->host_lock);
1597         lpfc_disc_set_adisc(vport, ndlp);
1598         return ndlp->nlp_state;
1599 }
1600
1601 static uint32_t
1602 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1603                               struct lpfc_nodelist *ndlp,
1604                               void *arg,
1605                               uint32_t evt)
1606 {
1607         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1608
1609         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1610         return ndlp->nlp_state;
1611 }
1612
1613 static uint32_t
1614 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1615                              struct lpfc_nodelist *ndlp,
1616                              void *arg,
1617                              uint32_t evt)
1618 {
1619         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1620         struct ls_rjt     stat;
1621
1622         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1623                 return ndlp->nlp_state;
1624         }
1625         if (vport->phba->nvmet_support) {
1626                 /* NVME Target mode.  Handle and respond to the PRLI and
1627                  * transition to UNMAPPED provided the RPI has completed
1628                  * registration.
1629                  */
1630                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1631                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1632                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1633                 } else {
1634                         /* RPI registration has not completed. Reject the PRLI
1635                          * to prevent an illegal state transition when the
1636                          * rpi registration does complete.
1637                          */
1638                         memset(&stat, 0, sizeof(struct ls_rjt));
1639                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1640                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1641                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1642                                             ndlp, NULL);
1643                         return ndlp->nlp_state;
1644                 }
1645         } else {
1646                 /* Initiator mode. */
1647                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1648         }
1649         return ndlp->nlp_state;
1650 }
1651
1652 static uint32_t
1653 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1654                              struct lpfc_nodelist *ndlp,
1655                              void *arg,
1656                              uint32_t evt)
1657 {
1658         struct lpfc_hba   *phba = vport->phba;
1659         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1660         LPFC_MBOXQ_t      *mb;
1661         LPFC_MBOXQ_t      *nextmb;
1662         struct lpfc_dmabuf *mp;
1663
1664         cmdiocb = (struct lpfc_iocbq *) arg;
1665
1666         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1667         if ((mb = phba->sli.mbox_active)) {
1668                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1669                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1670                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1671                         lpfc_nlp_put(ndlp);
1672                         mb->ctx_ndlp = NULL;
1673                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1674                 }
1675         }
1676
1677         spin_lock_irq(&phba->hbalock);
1678         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1679                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1680                    (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1681                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1682                         if (mp) {
1683                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1684                                 kfree(mp);
1685                         }
1686                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1687                         lpfc_nlp_put(ndlp);
1688                         list_del(&mb->list);
1689                         phba->sli.mboxq_cnt--;
1690                         mempool_free(mb, phba->mbox_mem_pool);
1691                 }
1692         }
1693         spin_unlock_irq(&phba->hbalock);
1694
1695         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1696         return ndlp->nlp_state;
1697 }
1698
1699 static uint32_t
1700 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1701                                struct lpfc_nodelist *ndlp,
1702                                void *arg,
1703                                uint32_t evt)
1704 {
1705         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1706
1707         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1708         return ndlp->nlp_state;
1709 }
1710
1711 static uint32_t
1712 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1713                              struct lpfc_nodelist *ndlp,
1714                              void *arg,
1715                              uint32_t evt)
1716 {
1717         struct lpfc_iocbq *cmdiocb;
1718
1719         cmdiocb = (struct lpfc_iocbq *) arg;
1720         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1721         return ndlp->nlp_state;
1722 }
1723
1724 static uint32_t
1725 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1726                                   struct lpfc_nodelist *ndlp,
1727                                   void *arg,
1728                                   uint32_t evt)
1729 {
1730         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1731         struct lpfc_hba *phba = vport->phba;
1732         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1733         MAILBOX_t *mb = &pmb->u.mb;
1734         uint32_t did  = mb->un.varWords[1];
1735         int rc = 0;
1736
1737         if (mb->mbxStatus) {
1738                 /* RegLogin failed */
1739                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1740                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1741                                  "x%x\n",
1742                                  did, mb->mbxStatus, vport->port_state,
1743                                  mb->un.varRegLogin.vpi,
1744                                  mb->un.varRegLogin.rpi);
1745                 /*
1746                  * If RegLogin failed due to lack of HBA resources do not
1747                  * retry discovery.
1748                  */
1749                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1750                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1751                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1752                         return ndlp->nlp_state;
1753                 }
1754
1755                 /* Put ndlp in npr state set plogi timer for 1 sec */
1756                 mod_timer(&ndlp->nlp_delayfunc,
1757                           jiffies + msecs_to_jiffies(1000 * 1));
1758                 spin_lock_irq(shost->host_lock);
1759                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1760                 spin_unlock_irq(shost->host_lock);
1761                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1762
1763                 lpfc_issue_els_logo(vport, ndlp, 0);
1764                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1765                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1766                 return ndlp->nlp_state;
1767         }
1768
1769         /* SLI4 ports have preallocated logical rpis. */
1770         if (phba->sli_rev < LPFC_SLI_REV4)
1771                 ndlp->nlp_rpi = mb->un.varWords[0];
1772
1773         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1774
1775         /* Only if we are not a fabric nport do we issue PRLI */
1776         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1777                          "3066 RegLogin Complete on x%x x%x x%x\n",
1778                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1779         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1780             (phba->nvmet_support == 0)) {
1781                 /* The driver supports FCP and NVME concurrently.  If the
1782                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1783                  * know what PRLI to send yet.  Figure that out now and
1784                  * call PRLI depending on the outcome.
1785                  */
1786                 if (vport->fc_flag & FC_PT2PT) {
1787                         /* If we are pt2pt, there is no Fabric to determine
1788                          * the FC4 type of the remote nport. So if NVME
1789                          * is configured try it.
1790                          */
1791                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1792                         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1793                             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1794                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1795                                 /* We need to update the localport also */
1796                                 lpfc_nvme_update_localport(vport);
1797                         }
1798
1799                 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1800                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1801
1802                 } else if (ndlp->nlp_fc4_type == 0) {
1803                         /* If we are only configured for FCP, the driver
1804                          * should just issue PRLI for FCP. Otherwise issue
1805                          * GFT_ID to determine if remote port supports NVME.
1806                          */
1807                         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1808                                 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1809                                                  0, ndlp->nlp_DID);
1810                                 return ndlp->nlp_state;
1811                         }
1812                         ndlp->nlp_fc4_type = NLP_FC4_FCP;
1813                 }
1814
1815                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1816                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1817                 lpfc_issue_els_prli(vport, ndlp, 0);
1818         } else {
1819                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1820                         phba->targetport->port_id = vport->fc_myDID;
1821
1822                 /* Only Fabric ports should transition. NVME target
1823                  * must complete PRLI.
1824                  */
1825                 if (ndlp->nlp_type & NLP_FABRIC) {
1826                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1827                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1828                 }
1829         }
1830         return ndlp->nlp_state;
1831 }
1832
1833 static uint32_t
1834 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1835                               struct lpfc_nodelist *ndlp,
1836                               void *arg,
1837                               uint32_t evt)
1838 {
1839         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1840
1841         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1842                 spin_lock_irq(shost->host_lock);
1843                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1844                 spin_unlock_irq(shost->host_lock);
1845                 return ndlp->nlp_state;
1846         } else {
1847                 lpfc_drop_node(vport, ndlp);
1848                 return NLP_STE_FREED_NODE;
1849         }
1850 }
1851
1852 static uint32_t
1853 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1854                                  struct lpfc_nodelist *ndlp,
1855                                  void *arg,
1856                                  uint32_t evt)
1857 {
1858         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1859
1860         /* Don't do anything that will mess up processing of the
1861          * previous RSCN.
1862          */
1863         if (vport->fc_flag & FC_RSCN_DEFERRED)
1864                 return ndlp->nlp_state;
1865
1866         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1867         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1868         spin_lock_irq(shost->host_lock);
1869
1870         /* If we are a target we won't immediately transition into PRLI,
1871          * so if REG_LOGIN already completed we don't need to ignore it.
1872          */
1873         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1874             !vport->phba->nvmet_support)
1875                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1876
1877         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1878         spin_unlock_irq(shost->host_lock);
1879         lpfc_disc_set_adisc(vport, ndlp);
1880         return ndlp->nlp_state;
1881 }
1882
1883 static uint32_t
1884 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1885                           void *arg, uint32_t evt)
1886 {
1887         struct lpfc_iocbq *cmdiocb;
1888
1889         cmdiocb = (struct lpfc_iocbq *) arg;
1890
1891         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1892         return ndlp->nlp_state;
1893 }
1894
1895 static uint32_t
1896 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1897                          void *arg, uint32_t evt)
1898 {
1899         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1900
1901         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1902                 return ndlp->nlp_state;
1903         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1904         return ndlp->nlp_state;
1905 }
1906
1907 static uint32_t
1908 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1909                          void *arg, uint32_t evt)
1910 {
1911         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1912
1913         /* Software abort outstanding PRLI before sending acc */
1914         lpfc_els_abort(vport->phba, ndlp);
1915
1916         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1917         return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1922                            void *arg, uint32_t evt)
1923 {
1924         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1925
1926         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1927         return ndlp->nlp_state;
1928 }
1929
1930 /* This routine is envoked when we rcv a PRLO request from a nport
1931  * we are logged into.  We should send back a PRLO rsp setting the
1932  * appropriate bits.
1933  * NEXT STATE = PRLI_ISSUE
1934  */
1935 static uint32_t
1936 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1937                          void *arg, uint32_t evt)
1938 {
1939         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1940
1941         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1942         return ndlp->nlp_state;
1943 }
1944
1945 static uint32_t
1946 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1947                           void *arg, uint32_t evt)
1948 {
1949         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1950         struct lpfc_iocbq *cmdiocb, *rspiocb;
1951         struct lpfc_hba   *phba = vport->phba;
1952         IOCB_t *irsp;
1953         PRLI *npr;
1954         struct lpfc_nvme_prli *nvpr;
1955         void *temp_ptr;
1956
1957         cmdiocb = (struct lpfc_iocbq *) arg;
1958         rspiocb = cmdiocb->context_un.rsp_iocb;
1959
1960         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
1961          * format is different so NULL the two PRLI types so that the
1962          * driver correctly gets the correct context.
1963          */
1964         npr = NULL;
1965         nvpr = NULL;
1966         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1967         if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1968                 npr = (PRLI *) temp_ptr;
1969         else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1970                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1971
1972         irsp = &rspiocb->iocb;
1973         if (irsp->ulpStatus) {
1974                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1975                     vport->cfg_restrict_login) {
1976                         goto out;
1977                 }
1978
1979                 /* Adjust the nlp_type accordingly if the PRLI failed */
1980                 if (npr)
1981                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1982                 if (nvpr)
1983                         ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
1984
1985                 /* We can't set the DSM state till BOTH PRLIs complete */
1986                 goto out_err;
1987         }
1988
1989         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1990             (npr->prliType == PRLI_FCP_TYPE)) {
1991                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1992                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1993                                  npr->initiatorFunc,
1994                                  npr->targetFunc);
1995                 if (npr->initiatorFunc)
1996                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1997                 if (npr->targetFunc) {
1998                         ndlp->nlp_type |= NLP_FCP_TARGET;
1999                         if (npr->writeXferRdyDis)
2000                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2001                 }
2002                 if (npr->Retry)
2003                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2004
2005         } else if (nvpr &&
2006                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2007                     PRLI_REQ_EXECUTED) &&
2008                    (bf_get_be32(prli_type_code, nvpr) ==
2009                     PRLI_NVME_TYPE)) {
2010
2011                 /* Complete setting up the remote ndlp personality. */
2012                 if (bf_get_be32(prli_init, nvpr))
2013                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
2014
2015                 /* Target driver cannot solicit NVME FB. */
2016                 if (bf_get_be32(prli_tgt, nvpr)) {
2017                         /* Complete the nvme target roles.  The transport
2018                          * needs to know if the rport is capable of
2019                          * discovery in addition to its role.
2020                          */
2021                         ndlp->nlp_type |= NLP_NVME_TARGET;
2022                         if (bf_get_be32(prli_disc, nvpr))
2023                                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2024
2025                         /*
2026                          * If prli_fba is set, the Target supports FirstBurst.
2027                          * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2028                          * otherwise it defines the actual size supported by
2029                          * the NVME Target.
2030                          */
2031                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2032                             (phba->cfg_nvme_enable_fb) &&
2033                             (!phba->nvmet_support)) {
2034                                 /* Both sides support FB. The target's first
2035                                  * burst size is a 512 byte encoded value.
2036                                  */
2037                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2038                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2039                                                                  nvpr);
2040
2041                                 /* Expressed in units of 512 bytes */
2042                                 if (ndlp->nvme_fb_size)
2043                                         ndlp->nvme_fb_size <<=
2044                                                 LPFC_NVME_FB_SHIFT;
2045                                 else
2046                                         ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2047                         }
2048                 }
2049
2050                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2051                                  "6029 NVME PRLI Cmpl w1 x%08x "
2052                                  "w4 x%08x w5 x%08x flag x%x, "
2053                                  "fcp_info x%x nlp_type x%x\n",
2054                                  be32_to_cpu(nvpr->word1),
2055                                  be32_to_cpu(nvpr->word4),
2056                                  be32_to_cpu(nvpr->word5),
2057                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
2058                                  ndlp->nlp_type);
2059         }
2060         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2061             (vport->port_type == LPFC_NPIV_PORT) &&
2062              vport->cfg_restrict_login) {
2063 out:
2064                 spin_lock_irq(shost->host_lock);
2065                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2066                 spin_unlock_irq(shost->host_lock);
2067                 lpfc_issue_els_logo(vport, ndlp, 0);
2068
2069                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2070                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2071                 return ndlp->nlp_state;
2072         }
2073
2074 out_err:
2075         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2076          * are complete.
2077          */
2078         if (ndlp->fc4_prli_sent == 0) {
2079                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2080                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2081                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2082                 else if (ndlp->nlp_type &
2083                          (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2084                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2085         } else
2086                 lpfc_printf_vlog(vport,
2087                                  KERN_INFO, LOG_ELS,
2088                                  "3067 PRLI's still outstanding "
2089                                  "on x%06x - count %d, Pend Node Mode "
2090                                  "transition...\n",
2091                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2092
2093         return ndlp->nlp_state;
2094 }
2095
2096 /*! lpfc_device_rm_prli_issue
2097  *
2098  * \pre
2099  * \post
2100  * \param   phba
2101  * \param   ndlp
2102  * \param   arg
2103  * \param   evt
2104  * \return  uint32_t
2105  *
2106  * \b Description:
2107  *    This routine is envoked when we a request to remove a nport we are in the
2108  *    process of PRLIing. We should software abort outstanding prli, unreg
2109  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2110  *    on plogi list so it can be freed when LOGO completes.
2111  *
2112  */
2113
2114 static uint32_t
2115 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2116                           void *arg, uint32_t evt)
2117 {
2118         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2119
2120         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2121                 spin_lock_irq(shost->host_lock);
2122                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2123                 spin_unlock_irq(shost->host_lock);
2124                 return ndlp->nlp_state;
2125         } else {
2126                 /* software abort outstanding PLOGI */
2127                 lpfc_els_abort(vport->phba, ndlp);
2128
2129                 lpfc_drop_node(vport, ndlp);
2130                 return NLP_STE_FREED_NODE;
2131         }
2132 }
2133
2134
2135 /*! lpfc_device_recov_prli_issue
2136  *
2137  * \pre
2138  * \post
2139  * \param   phba
2140  * \param   ndlp
2141  * \param   arg
2142  * \param   evt
2143  * \return  uint32_t
2144  *
2145  * \b Description:
2146  *    The routine is envoked when the state of a device is unknown, like
2147  *    during a link down. We should remove the nodelist entry from the
2148  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2149  *    outstanding PRLI command, then free the node entry.
2150  */
2151 static uint32_t
2152 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2153                              struct lpfc_nodelist *ndlp,
2154                              void *arg,
2155                              uint32_t evt)
2156 {
2157         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2158         struct lpfc_hba  *phba = vport->phba;
2159
2160         /* Don't do anything that will mess up processing of the
2161          * previous RSCN.
2162          */
2163         if (vport->fc_flag & FC_RSCN_DEFERRED)
2164                 return ndlp->nlp_state;
2165
2166         /* software abort outstanding PRLI */
2167         lpfc_els_abort(phba, ndlp);
2168
2169         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2170         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2171         spin_lock_irq(shost->host_lock);
2172         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2173         spin_unlock_irq(shost->host_lock);
2174         lpfc_disc_set_adisc(vport, ndlp);
2175         return ndlp->nlp_state;
2176 }
2177
2178 static uint32_t
2179 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2180                           void *arg, uint32_t evt)
2181 {
2182         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2183         struct ls_rjt     stat;
2184
2185         memset(&stat, 0, sizeof(struct ls_rjt));
2186         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2187         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2188         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2189         return ndlp->nlp_state;
2190 }
2191
2192 static uint32_t
2193 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2194                          void *arg, uint32_t evt)
2195 {
2196         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2197         struct ls_rjt     stat;
2198
2199         memset(&stat, 0, sizeof(struct ls_rjt));
2200         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2201         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2202         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2203         return ndlp->nlp_state;
2204 }
2205
2206 static uint32_t
2207 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2208                          void *arg, uint32_t evt)
2209 {
2210         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2211         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2212
2213         spin_lock_irq(shost->host_lock);
2214         ndlp->nlp_flag |= NLP_LOGO_ACC;
2215         spin_unlock_irq(shost->host_lock);
2216         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2217         return ndlp->nlp_state;
2218 }
2219
2220 static uint32_t
2221 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2222                            void *arg, uint32_t evt)
2223 {
2224         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2225         struct ls_rjt     stat;
2226
2227         memset(&stat, 0, sizeof(struct ls_rjt));
2228         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2229         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2230         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2231         return ndlp->nlp_state;
2232 }
2233
2234 static uint32_t
2235 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2236                          void *arg, uint32_t evt)
2237 {
2238         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2239         struct ls_rjt     stat;
2240
2241         memset(&stat, 0, sizeof(struct ls_rjt));
2242         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2243         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2244         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2245         return ndlp->nlp_state;
2246 }
2247
2248 static uint32_t
2249 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2250                           void *arg, uint32_t evt)
2251 {
2252         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2253
2254         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2255         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2256         spin_lock_irq(shost->host_lock);
2257         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2258         spin_unlock_irq(shost->host_lock);
2259         lpfc_disc_set_adisc(vport, ndlp);
2260         return ndlp->nlp_state;
2261 }
2262
2263 static uint32_t
2264 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2265                           void *arg, uint32_t evt)
2266 {
2267         /*
2268          * DevLoss has timed out and is calling for Device Remove.
2269          * In this case, abort the LOGO and cleanup the ndlp
2270          */
2271
2272         lpfc_unreg_rpi(vport, ndlp);
2273         /* software abort outstanding PLOGI */
2274         lpfc_els_abort(vport->phba, ndlp);
2275         lpfc_drop_node(vport, ndlp);
2276         return NLP_STE_FREED_NODE;
2277 }
2278
2279 static uint32_t
2280 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2281                              struct lpfc_nodelist *ndlp,
2282                              void *arg, uint32_t evt)
2283 {
2284         /*
2285          * Device Recovery events have no meaning for a node with a LOGO
2286          * outstanding.  The LOGO has to complete first and handle the
2287          * node from that point.
2288          */
2289         return ndlp->nlp_state;
2290 }
2291
2292 static uint32_t
2293 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2294                           void *arg, uint32_t evt)
2295 {
2296         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2297
2298         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2299         return ndlp->nlp_state;
2300 }
2301
2302 static uint32_t
2303 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2304                          void *arg, uint32_t evt)
2305 {
2306         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2307
2308         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2309                 return ndlp->nlp_state;
2310
2311         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2312         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2313         return ndlp->nlp_state;
2314 }
2315
2316 static uint32_t
2317 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2318                          void *arg, uint32_t evt)
2319 {
2320         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2321
2322         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2323         return ndlp->nlp_state;
2324 }
2325
2326 static uint32_t
2327 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2328                            void *arg, uint32_t evt)
2329 {
2330         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2331
2332         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2333         return ndlp->nlp_state;
2334 }
2335
2336 static uint32_t
2337 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2338                          void *arg, uint32_t evt)
2339 {
2340         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2341
2342         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2343         return ndlp->nlp_state;
2344 }
2345
2346 static uint32_t
2347 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2348                              struct lpfc_nodelist *ndlp,
2349                              void *arg,
2350                              uint32_t evt)
2351 {
2352         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2353
2354         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2355         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2356         spin_lock_irq(shost->host_lock);
2357         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2358         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2359         spin_unlock_irq(shost->host_lock);
2360         lpfc_disc_set_adisc(vport, ndlp);
2361
2362         return ndlp->nlp_state;
2363 }
2364
2365 static uint32_t
2366 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2367                            void *arg, uint32_t evt)
2368 {
2369         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2370
2371         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2372         return ndlp->nlp_state;
2373 }
2374
2375 static uint32_t
2376 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2377                           void *arg, uint32_t evt)
2378 {
2379         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2380
2381         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2382                 return ndlp->nlp_state;
2383         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2384         return ndlp->nlp_state;
2385 }
2386
2387 static uint32_t
2388 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2389                           void *arg, uint32_t evt)
2390 {
2391         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2392
2393         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2394         return ndlp->nlp_state;
2395 }
2396
2397 static uint32_t
2398 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2399                             struct lpfc_nodelist *ndlp,
2400                             void *arg, uint32_t evt)
2401 {
2402         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2403
2404         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2405         return ndlp->nlp_state;
2406 }
2407
2408 static uint32_t
2409 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2410                           void *arg, uint32_t evt)
2411 {
2412         struct lpfc_hba  *phba = vport->phba;
2413         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2414
2415         /* flush the target */
2416         lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2417                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2418
2419         /* Treat like rcv logo */
2420         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2421         return ndlp->nlp_state;
2422 }
2423
2424 static uint32_t
2425 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2426                               struct lpfc_nodelist *ndlp,
2427                               void *arg,
2428                               uint32_t evt)
2429 {
2430         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2431
2432         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2433         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2434         spin_lock_irq(shost->host_lock);
2435         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2436         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2437         spin_unlock_irq(shost->host_lock);
2438         lpfc_disc_set_adisc(vport, ndlp);
2439         return ndlp->nlp_state;
2440 }
2441
2442 static uint32_t
2443 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2444                         void *arg, uint32_t evt)
2445 {
2446         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2447         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2448
2449         /* Ignore PLOGI if we have an outstanding LOGO */
2450         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2451                 return ndlp->nlp_state;
2452         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2453                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2454                 spin_lock_irq(shost->host_lock);
2455                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2456                 spin_unlock_irq(shost->host_lock);
2457         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2458                 /* send PLOGI immediately, move to PLOGI issue state */
2459                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2460                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2461                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2462                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2463                 }
2464         }
2465         return ndlp->nlp_state;
2466 }
2467
2468 static uint32_t
2469 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2470                        void *arg, uint32_t evt)
2471 {
2472         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2473         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2474         struct ls_rjt     stat;
2475
2476         memset(&stat, 0, sizeof (struct ls_rjt));
2477         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2478         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2479         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2480
2481         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2482                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2483                         spin_lock_irq(shost->host_lock);
2484                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2485                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2486                         spin_unlock_irq(shost->host_lock);
2487                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2488                         lpfc_issue_els_adisc(vport, ndlp, 0);
2489                 } else {
2490                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2491                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2492                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2493                 }
2494         }
2495         return ndlp->nlp_state;
2496 }
2497
2498 static uint32_t
2499 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2500                        void *arg, uint32_t evt)
2501 {
2502         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2503
2504         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2505         return ndlp->nlp_state;
2506 }
2507
2508 static uint32_t
2509 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2510                          void *arg, uint32_t evt)
2511 {
2512         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2513
2514         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2515         /*
2516          * Do not start discovery if discovery is about to start
2517          * or discovery in progress for this node. Starting discovery
2518          * here will affect the counting of discovery threads.
2519          */
2520         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2521             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2522                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2523                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2524                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2525                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2526                         lpfc_issue_els_adisc(vport, ndlp, 0);
2527                 } else {
2528                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2529                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2530                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2531                 }
2532         }
2533         return ndlp->nlp_state;
2534 }
2535
2536 static uint32_t
2537 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2538                        void *arg, uint32_t evt)
2539 {
2540         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2541         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2542
2543         spin_lock_irq(shost->host_lock);
2544         ndlp->nlp_flag |= NLP_LOGO_ACC;
2545         spin_unlock_irq(shost->host_lock);
2546
2547         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2548
2549         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2550                 mod_timer(&ndlp->nlp_delayfunc,
2551                           jiffies + msecs_to_jiffies(1000 * 1));
2552                 spin_lock_irq(shost->host_lock);
2553                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2554                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2555                 spin_unlock_irq(shost->host_lock);
2556                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2557         } else {
2558                 spin_lock_irq(shost->host_lock);
2559                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2560                 spin_unlock_irq(shost->host_lock);
2561         }
2562         return ndlp->nlp_state;
2563 }
2564
2565 static uint32_t
2566 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2567                          void *arg, uint32_t evt)
2568 {
2569         struct lpfc_iocbq *cmdiocb, *rspiocb;
2570         IOCB_t *irsp;
2571         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2572
2573         cmdiocb = (struct lpfc_iocbq *) arg;
2574         rspiocb = cmdiocb->context_un.rsp_iocb;
2575
2576         irsp = &rspiocb->iocb;
2577         if (irsp->ulpStatus) {
2578                 spin_lock_irq(shost->host_lock);
2579                 ndlp->nlp_flag |= NLP_DEFER_RM;
2580                 spin_unlock_irq(shost->host_lock);
2581                 return NLP_STE_FREED_NODE;
2582         }
2583         return ndlp->nlp_state;
2584 }
2585
2586 static uint32_t
2587 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2588                         void *arg, uint32_t evt)
2589 {
2590         struct lpfc_iocbq *cmdiocb, *rspiocb;
2591         IOCB_t *irsp;
2592
2593         cmdiocb = (struct lpfc_iocbq *) arg;
2594         rspiocb = cmdiocb->context_un.rsp_iocb;
2595
2596         irsp = &rspiocb->iocb;
2597         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2598                 lpfc_drop_node(vport, ndlp);
2599                 return NLP_STE_FREED_NODE;
2600         }
2601         return ndlp->nlp_state;
2602 }
2603
2604 static uint32_t
2605 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2606                         void *arg, uint32_t evt)
2607 {
2608         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2609
2610         /* For the fabric port just clear the fc flags. */
2611         if (ndlp->nlp_DID == Fabric_DID) {
2612                 spin_lock_irq(shost->host_lock);
2613                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2614                 spin_unlock_irq(shost->host_lock);
2615         }
2616         lpfc_unreg_rpi(vport, ndlp);
2617         return ndlp->nlp_state;
2618 }
2619
2620 static uint32_t
2621 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2622                          void *arg, uint32_t evt)
2623 {
2624         struct lpfc_iocbq *cmdiocb, *rspiocb;
2625         IOCB_t *irsp;
2626
2627         cmdiocb = (struct lpfc_iocbq *) arg;
2628         rspiocb = cmdiocb->context_un.rsp_iocb;
2629
2630         irsp = &rspiocb->iocb;
2631         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2632                 lpfc_drop_node(vport, ndlp);
2633                 return NLP_STE_FREED_NODE;
2634         }
2635         return ndlp->nlp_state;
2636 }
2637
2638 static uint32_t
2639 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2640                             struct lpfc_nodelist *ndlp,
2641                             void *arg, uint32_t evt)
2642 {
2643         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2644         MAILBOX_t    *mb = &pmb->u.mb;
2645
2646         if (!mb->mbxStatus) {
2647                 /* SLI4 ports have preallocated logical rpis. */
2648                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2649                         ndlp->nlp_rpi = mb->un.varWords[0];
2650                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2651                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2652                         lpfc_unreg_rpi(vport, ndlp);
2653                 }
2654         } else {
2655                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2656                         lpfc_drop_node(vport, ndlp);
2657                         return NLP_STE_FREED_NODE;
2658                 }
2659         }
2660         return ndlp->nlp_state;
2661 }
2662
2663 static uint32_t
2664 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2665                         void *arg, uint32_t evt)
2666 {
2667         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2668
2669         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2670                 spin_lock_irq(shost->host_lock);
2671                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2672                 spin_unlock_irq(shost->host_lock);
2673                 return ndlp->nlp_state;
2674         }
2675         lpfc_drop_node(vport, ndlp);
2676         return NLP_STE_FREED_NODE;
2677 }
2678
2679 static uint32_t
2680 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2681                            void *arg, uint32_t evt)
2682 {
2683         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2684
2685         /* Don't do anything that will mess up processing of the
2686          * previous RSCN.
2687          */
2688         if (vport->fc_flag & FC_RSCN_DEFERRED)
2689                 return ndlp->nlp_state;
2690
2691         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2692         spin_lock_irq(shost->host_lock);
2693         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2694         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2695         spin_unlock_irq(shost->host_lock);
2696         return ndlp->nlp_state;
2697 }
2698
2699
2700 /* This next section defines the NPort Discovery State Machine */
2701
2702 /* There are 4 different double linked lists nodelist entries can reside on.
2703  * The plogi list and adisc list are used when Link Up discovery or RSCN
2704  * processing is needed. Each list holds the nodes that we will send PLOGI
2705  * or ADISC on. These lists will keep track of what nodes will be effected
2706  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2707  * The unmapped_list will contain all nodes that we have successfully logged
2708  * into at the Fibre Channel level. The mapped_list will contain all nodes
2709  * that are mapped FCP targets.
2710  */
2711 /*
2712  * The bind list is a list of undiscovered (potentially non-existent) nodes
2713  * that we have saved binding information on. This information is used when
2714  * nodes transition from the unmapped to the mapped list.
2715  */
2716 /* For UNUSED_NODE state, the node has just been allocated .
2717  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2718  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2719  * and put on the unmapped list. For ADISC processing, the node is taken off
2720  * the ADISC list and placed on either the mapped or unmapped list (depending
2721  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2722  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2723  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2724  * node, the node is taken off the unmapped list. The binding list is checked
2725  * for a valid binding, or a binding is automatically assigned. If binding
2726  * assignment is unsuccessful, the node is left on the unmapped list. If
2727  * binding assignment is successful, the associated binding list entry (if
2728  * any) is removed, and the node is placed on the mapped list.
2729  */
2730 /*
2731  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2732  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2733  * expire, all effected nodes will receive a DEVICE_RM event.
2734  */
2735 /*
2736  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2737  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2738  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2739  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2740  * we will first process the ADISC list.  32 entries are processed initially and
2741  * ADISC is initited for each one.  Completions / Events for each node are
2742  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2743  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2744  * waiting, and the ADISC list count is identically 0, then we are done. For
2745  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2746  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2747  * list.  32 entries are processed initially and PLOGI is initited for each one.
2748  * Completions / Events for each node are funnelled thru the state machine.  As
2749  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2750  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2751  * indentically 0, then we are done. We have now completed discovery / RSCN
2752  * handling. Upon completion, ALL nodes should be on either the mapped or
2753  * unmapped lists.
2754  */
2755
2756 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2757      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2758         /* Action routine                  Event       Current State  */
2759         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2760         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2761         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2762         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2763         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2764         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2765         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2766         lpfc_disc_illegal,              /* CMPL_PRLI       */
2767         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2768         lpfc_disc_illegal,              /* CMPL_ADISC      */
2769         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2770         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2771         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2772
2773         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2774         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2775         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2776         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2777         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2778         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2779         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2780         lpfc_disc_illegal,              /* CMPL_PRLI       */
2781         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2782         lpfc_disc_illegal,              /* CMPL_ADISC      */
2783         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2784         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2785         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2786
2787         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2788         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2789         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2790         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2791         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2792         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2793         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2794         lpfc_disc_illegal,              /* CMPL_PRLI       */
2795         lpfc_disc_illegal,              /* CMPL_LOGO       */
2796         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2797         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2798         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2799         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2800
2801         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2802         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2803         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2804         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2805         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2806         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2807         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2808         lpfc_disc_illegal,              /* CMPL_PRLI       */
2809         lpfc_disc_illegal,              /* CMPL_LOGO       */
2810         lpfc_disc_illegal,              /* CMPL_ADISC      */
2811         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2812         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2813         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2814
2815         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2816         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2817         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2818         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2819         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2820         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2821         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2822         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2823         lpfc_disc_illegal,              /* CMPL_LOGO       */
2824         lpfc_disc_illegal,              /* CMPL_ADISC      */
2825         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2826         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2827         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2828
2829         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2830         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2831         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2832         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2833         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2834         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2835         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2836         lpfc_disc_illegal,              /* CMPL_PRLI       */
2837         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2838         lpfc_disc_illegal,              /* CMPL_ADISC      */
2839         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2840         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2841         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2842
2843         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2844         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2845         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2846         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2847         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2848         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2849         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2850         lpfc_disc_illegal,              /* CMPL_PRLI       */
2851         lpfc_disc_illegal,              /* CMPL_LOGO       */
2852         lpfc_disc_illegal,              /* CMPL_ADISC      */
2853         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2854         lpfc_disc_illegal,              /* DEVICE_RM       */
2855         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2856
2857         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2858         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2859         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2860         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2861         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2862         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2863         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2864         lpfc_disc_illegal,              /* CMPL_PRLI       */
2865         lpfc_disc_illegal,              /* CMPL_LOGO       */
2866         lpfc_disc_illegal,              /* CMPL_ADISC      */
2867         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2868         lpfc_disc_illegal,              /* DEVICE_RM       */
2869         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2870
2871         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2872         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2873         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2874         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2875         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2876         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2877         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2878         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2879         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2880         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2881         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2882         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2883         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2884 };
2885
2886 int
2887 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2888                         void *arg, uint32_t evt)
2889 {
2890         uint32_t cur_state, rc;
2891         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2892                          uint32_t);
2893         uint32_t got_ndlp = 0;
2894
2895         if (lpfc_nlp_get(ndlp))
2896                 got_ndlp = 1;
2897
2898         cur_state = ndlp->nlp_state;
2899
2900         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2901         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2902                          "0211 DSM in event x%x on NPort x%x in "
2903                          "state %d rpi x%x Data: x%x x%x\n",
2904                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
2905                          ndlp->nlp_flag, ndlp->nlp_fc4_type);
2906
2907         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2908                  "DSM in:          evt:%d ste:%d did:x%x",
2909                 evt, cur_state, ndlp->nlp_DID);
2910
2911         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2912         rc = (func) (vport, ndlp, arg, evt);
2913
2914         /* DSM out state <rc> on NPort <nlp_DID> */
2915         if (got_ndlp) {
2916                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2917                          "0212 DSM out state %d on NPort x%x "
2918                          "rpi x%x Data: x%x\n",
2919                          rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag);
2920
2921                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2922                         "DSM out:         ste:%d did:x%x flg:x%x",
2923                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2924                 /* Decrement the ndlp reference count held for this function */
2925                 lpfc_nlp_put(ndlp);
2926         } else {
2927                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2928                         "0213 DSM out state %d on NPort free\n", rc);
2929
2930                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2931                         "DSM out:         ste:%d did:x%x flg:x%x",
2932                         rc, 0, 0);
2933         }
2934
2935         return rc;
2936 }