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 Broadcom. All Rights Reserved. The term      *
   5  * “Broadcom” refers to Broadcom Limited 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->context2 = 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->context1;
 539         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 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 (phba->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                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 840                 return 0;
 841         }
 842
 843         if (!(vport->fc_flag & FC_PT2PT)) {
 844                 /* Check config parameter use-adisc or FCP-2 */
 845                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 846                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 847                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 848                         spin_lock_irq(shost->host_lock);
 849                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 850                         spin_unlock_irq(shost->host_lock);
 851                         return 1;
 852                 }
 853         }
 854         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 855         lpfc_unreg_rpi(vport, ndlp);
 856         return 0;
 857 }
 858
 859 /**
 860  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 861  * @phba : Pointer to lpfc_hba structure.
 862  * @vport: Pointer to lpfc_vport structure.
 863  * @rpi  : rpi to be release.
 864  *
 865  * This function will send a unreg_login mailbox command to the firmware
 866  * to release a rpi.
 867  **/
 868 void
 869 lpfc_release_rpi(struct lpfc_hba *phba,
 870                 struct lpfc_vport *vport,
 871                 uint16_t rpi)
 872 {
 873         LPFC_MBOXQ_t *pmb;
 874         int rc;
 875
 876         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 877                         GFP_KERNEL);
 878         if (!pmb)
 879                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 880                         "2796 mailbox memory allocation failed \n");
 881         else {
 882                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 883                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 884                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 885                 if (rc == MBX_NOT_FINISHED)
 886                         mempool_free(pmb, phba->mbox_mem_pool);
 887         }
 888 }
 889
 890 static uint32_t
 891 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 892                   void *arg, uint32_t evt)
 893 {
 894         struct lpfc_hba *phba;
 895         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 896         uint16_t rpi;
 897
 898         phba = vport->phba;
 899         /* Release the RPI if reglogin completing */
 900         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 901                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 902                 (!pmb->u.mb.mbxStatus)) {
 903                 rpi = pmb->u.mb.un.varWords[0];
 904                 lpfc_release_rpi(phba, vport, rpi);
 905         }
 906         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 907                          "0271 Illegal State Transition: node x%x "
 908                          "event x%x, state x%x Data: x%x x%x\n",
 909                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 910                          ndlp->nlp_flag);
 911         return ndlp->nlp_state;
 912 }
 913
 914 static uint32_t
 915 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 916                   void *arg, uint32_t evt)
 917 {
 918         /* This transition is only legal if we previously
 919          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 920          * working on the same NPortID, do nothing for this thread
 921          * to stop it.
 922          */
 923         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 924                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 925                          "0272 Illegal State Transition: node x%x "
 926                          "event x%x, state x%x Data: x%x x%x\n",
 927                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 928                          ndlp->nlp_flag);
 929         }
 930         return ndlp->nlp_state;
 931 }
 932
 933 /* Start of Discovery State Machine routines */
 934
 935 static uint32_t
 936 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 937                            void *arg, uint32_t evt)
 938 {
 939         struct lpfc_iocbq *cmdiocb;
 940
 941         cmdiocb = (struct lpfc_iocbq *) arg;
 942
 943         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 944                 return ndlp->nlp_state;
 945         }
 946         return NLP_STE_FREED_NODE;
 947 }
 948
 949 static uint32_t
 950 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 951                          void *arg, uint32_t evt)
 952 {
 953         lpfc_issue_els_logo(vport, ndlp, 0);
 954         return ndlp->nlp_state;
 955 }
 956
 957 static uint32_t
 958 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 959                           void *arg, uint32_t evt)
 960 {
 961         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 962         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 963
 964         spin_lock_irq(shost->host_lock);
 965         ndlp->nlp_flag |= NLP_LOGO_ACC;
 966         spin_unlock_irq(shost->host_lock);
 967         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 968
 969         return ndlp->nlp_state;
 970 }
 971
 972 static uint32_t
 973 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 974                            void *arg, uint32_t evt)
 975 {
 976         return NLP_STE_FREED_NODE;
 977 }
 978
 979 static uint32_t
 980 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 981                            void *arg, uint32_t evt)
 982 {
 983         return NLP_STE_FREED_NODE;
 984 }
 985
 986 static uint32_t
 987 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 988                         struct lpfc_nodelist *ndlp,
 989                            void *arg, uint32_t evt)
 990 {
 991         return ndlp->nlp_state;
 992 }
 993
 994 static uint32_t
 995 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 996                            void *arg, uint32_t evt)
 997 {
 998         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 999         struct lpfc_hba   *phba = vport->phba;
1000         struct lpfc_iocbq *cmdiocb = arg;
1001         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1002         uint32_t *lp = (uint32_t *) pcmd->virt;
1003         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1004         struct ls_rjt stat;
1005         int port_cmp;
1006
1007         memset(&stat, 0, sizeof (struct ls_rjt));
1008
1009         /* For a PLOGI, we only accept if our portname is less
1010          * than the remote portname.
1011          */
1012         phba->fc_stat.elsLogiCol++;
1013         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1014                           sizeof(struct lpfc_name));
1015
1016         if (port_cmp >= 0) {
1017                 /* Reject this request because the remote node will accept
1018                    ours */
1019                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1020                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1021                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1022                         NULL);
1023         } else {
1024                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1025                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1026                     (vport->num_disc_nodes)) {
1027                         spin_lock_irq(shost->host_lock);
1028                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1029                         spin_unlock_irq(shost->host_lock);
1030                         /* Check if there are more PLOGIs to be sent */
1031                         lpfc_more_plogi(vport);
1032                         if (vport->num_disc_nodes == 0) {
1033                                 spin_lock_irq(shost->host_lock);
1034                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1035                                 spin_unlock_irq(shost->host_lock);
1036                                 lpfc_can_disctmo(vport);
1037                                 lpfc_end_rscn(vport);
1038                         }
1039                 }
1040         } /* If our portname was less */
1041
1042         return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1047                           void *arg, uint32_t evt)
1048 {
1049         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1050         struct ls_rjt     stat;
1051
1052         memset(&stat, 0, sizeof (struct ls_rjt));
1053         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1054         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1055         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1056         return ndlp->nlp_state;
1057 }
1058
1059 static uint32_t
1060 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1061                           void *arg, uint32_t evt)
1062 {
1063         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1064
1065                                 /* software abort outstanding PLOGI */
1066         lpfc_els_abort(vport->phba, ndlp);
1067
1068         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1069         return ndlp->nlp_state;
1070 }
1071
1072 static uint32_t
1073 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1074                          void *arg, uint32_t evt)
1075 {
1076         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1077         struct lpfc_hba   *phba = vport->phba;
1078         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1079
1080         /* software abort outstanding PLOGI */
1081         lpfc_els_abort(phba, ndlp);
1082
1083         if (evt == NLP_EVT_RCV_LOGO) {
1084                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1085         } else {
1086                 lpfc_issue_els_logo(vport, ndlp, 0);
1087         }
1088
1089         /* Put ndlp in npr state set plogi timer for 1 sec */
1090         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1091         spin_lock_irq(shost->host_lock);
1092         ndlp->nlp_flag |= NLP_DELAY_TMO;
1093         spin_unlock_irq(shost->host_lock);
1094         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1095         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1096         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1097
1098         return ndlp->nlp_state;
1099 }
1100
1101 static uint32_t
1102 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1103                             struct lpfc_nodelist *ndlp,
1104                             void *arg,
1105                             uint32_t evt)
1106 {
1107         struct lpfc_hba    *phba = vport->phba;
1108         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1109         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1110         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1111         uint32_t *lp;
1112         uint32_t vid, flag;
1113         IOCB_t *irsp;
1114         struct serv_parm *sp;
1115         uint32_t ed_tov;
1116         LPFC_MBOXQ_t *mbox;
1117         int rc;
1118
1119         cmdiocb = (struct lpfc_iocbq *) arg;
1120         rspiocb = cmdiocb->context_un.rsp_iocb;
1121
1122         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1123                 /* Recovery from PLOGI collision logic */
1124                 return ndlp->nlp_state;
1125         }
1126
1127         irsp = &rspiocb->iocb;
1128
1129         if (irsp->ulpStatus)
1130                 goto out;
1131
1132         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1133
1134         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1135         if (!prsp)
1136                 goto out;
1137
1138         lp = (uint32_t *) prsp->virt;
1139         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1140
1141         /* Some switches have FDMI servers returning 0 for WWN */
1142         if ((ndlp->nlp_DID != FDMI_DID) &&
1143                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1144                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1145                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1146                                  "0142 PLOGI RSP: Invalid WWN.\n");
1147                 goto out;
1148         }
1149         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1150                 goto out;
1151         /* PLOGI chkparm OK */
1152         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1153                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1154                          ndlp->nlp_DID, ndlp->nlp_state,
1155                          ndlp->nlp_flag, ndlp->nlp_rpi);
1156         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1157                 ndlp->nlp_fcp_info |= CLASS2;
1158         else
1159                 ndlp->nlp_fcp_info |= CLASS3;
1160
1161         ndlp->nlp_class_sup = 0;
1162         if (sp->cls1.classValid)
1163                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1164         if (sp->cls2.classValid)
1165                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1166         if (sp->cls3.classValid)
1167                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1168         if (sp->cls4.classValid)
1169                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1170         ndlp->nlp_maxframe =
1171                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1172
1173         if ((vport->fc_flag & FC_PT2PT) &&
1174             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1175                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1176                 if (sp->cmn.edtovResolution) {
1177                         /* E_D_TOV ticks are in nanoseconds */
1178                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1179                 }
1180
1181                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1182                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1183                     sp->cmn.valid_vendor_ver_level) {
1184                         vid = be32_to_cpu(sp->un.vv.vid);
1185                         flag = be32_to_cpu(sp->un.vv.flags);
1186                         if ((vid == LPFC_VV_EMLX_ID) &&
1187                             (flag & LPFC_VV_SUPPRESS_RSP))
1188                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1189                 }
1190
1191                 /*
1192                  * Use the larger EDTOV
1193                  * RATOV = 2 * EDTOV for pt-to-pt
1194                  */
1195                 if (ed_tov > phba->fc_edtov)
1196                         phba->fc_edtov = ed_tov;
1197                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1198
1199                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1200
1201                 /* Issue config_link / reg_vfi to account for updated TOV's */
1202                 if (phba->sli_rev == LPFC_SLI_REV4) {
1203                         lpfc_issue_reg_vfi(vport);
1204                 } else {
1205                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1206                         if (!mbox) {
1207                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1208                                                  "0133 PLOGI: no memory "
1209                                                  "for config_link "
1210                                                  "Data: x%x x%x x%x x%x\n",
1211                                                  ndlp->nlp_DID, ndlp->nlp_state,
1212                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1213                                 goto out;
1214                         }
1215
1216                         lpfc_config_link(phba, mbox);
1217
1218                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1219                         mbox->vport = vport;
1220                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1221                         if (rc == MBX_NOT_FINISHED) {
1222                                 mempool_free(mbox, phba->mbox_mem_pool);
1223                                 goto out;
1224                         }
1225                 }
1226         }
1227
1228         lpfc_unreg_rpi(vport, ndlp);
1229
1230         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1231         if (!mbox) {
1232                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1233                                  "0018 PLOGI: no memory for reg_login "
1234                                  "Data: x%x x%x x%x x%x\n",
1235                                  ndlp->nlp_DID, ndlp->nlp_state,
1236                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1237                 goto out;
1238         }
1239
1240         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1241                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1242                 switch (ndlp->nlp_DID) {
1243                 case NameServer_DID:
1244                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1245                         break;
1246                 case FDMI_DID:
1247                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1248                         break;
1249                 default:
1250                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1251                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1252                 }
1253                 mbox->context2 = lpfc_nlp_get(ndlp);
1254                 mbox->vport = vport;
1255                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1256                     != MBX_NOT_FINISHED) {
1257                         lpfc_nlp_set_state(vport, ndlp,
1258                                            NLP_STE_REG_LOGIN_ISSUE);
1259                         return ndlp->nlp_state;
1260                 }
1261                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1262                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1263                 /* decrement node reference count to the failed mbox
1264                  * command
1265                  */
1266                 lpfc_nlp_put(ndlp);
1267                 mp = (struct lpfc_dmabuf *) mbox->context1;
1268                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1269                 kfree(mp);
1270                 mempool_free(mbox, phba->mbox_mem_pool);
1271
1272                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1273                                  "0134 PLOGI: cannot issue reg_login "
1274                                  "Data: x%x x%x x%x x%x\n",
1275                                  ndlp->nlp_DID, ndlp->nlp_state,
1276                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1277         } else {
1278                 mempool_free(mbox, phba->mbox_mem_pool);
1279
1280                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1281                                  "0135 PLOGI: cannot format reg_login "
1282                                  "Data: x%x x%x x%x x%x\n",
1283                                  ndlp->nlp_DID, ndlp->nlp_state,
1284                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1285         }
1286
1287
1288 out:
1289         if (ndlp->nlp_DID == NameServer_DID) {
1290                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1291                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1292                                  "0261 Cannot Register NameServer login\n");
1293         }
1294
1295         /*
1296         ** In case the node reference counter does not go to zero, ensure that
1297         ** the stale state for the node is not processed.
1298         */
1299
1300         ndlp->nlp_prev_state = ndlp->nlp_state;
1301         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1302         spin_lock_irq(shost->host_lock);
1303         ndlp->nlp_flag |= NLP_DEFER_RM;
1304         spin_unlock_irq(shost->host_lock);
1305         return NLP_STE_FREED_NODE;
1306 }
1307
1308 static uint32_t
1309 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1310                            void *arg, uint32_t evt)
1311 {
1312         return ndlp->nlp_state;
1313 }
1314
1315 static uint32_t
1316 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1317         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1318 {
1319         struct lpfc_hba *phba;
1320         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1321         MAILBOX_t *mb = &pmb->u.mb;
1322         uint16_t rpi;
1323
1324         phba = vport->phba;
1325         /* Release the RPI */
1326         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1327                 !mb->mbxStatus) {
1328                 rpi = pmb->u.mb.un.varWords[0];
1329                 lpfc_release_rpi(phba, vport, rpi);
1330         }
1331         return ndlp->nlp_state;
1332 }
1333
1334 static uint32_t
1335 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1336                            void *arg, uint32_t evt)
1337 {
1338         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1339
1340         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1341                 spin_lock_irq(shost->host_lock);
1342                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1343                 spin_unlock_irq(shost->host_lock);
1344                 return ndlp->nlp_state;
1345         } else {
1346                 /* software abort outstanding PLOGI */
1347                 lpfc_els_abort(vport->phba, ndlp);
1348
1349                 lpfc_drop_node(vport, ndlp);
1350                 return NLP_STE_FREED_NODE;
1351         }
1352 }
1353
1354 static uint32_t
1355 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1356                               struct lpfc_nodelist *ndlp,
1357                               void *arg,
1358                               uint32_t evt)
1359 {
1360         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1361         struct lpfc_hba  *phba = vport->phba;
1362
1363         /* Don't do anything that will mess up processing of the
1364          * previous RSCN.
1365          */
1366         if (vport->fc_flag & FC_RSCN_DEFERRED)
1367                 return ndlp->nlp_state;
1368
1369         /* software abort outstanding PLOGI */
1370         lpfc_els_abort(phba, ndlp);
1371
1372         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1373         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1374         spin_lock_irq(shost->host_lock);
1375         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1376         spin_unlock_irq(shost->host_lock);
1377
1378         return ndlp->nlp_state;
1379 }
1380
1381 static uint32_t
1382 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1383                            void *arg, uint32_t evt)
1384 {
1385         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1386         struct lpfc_hba   *phba = vport->phba;
1387         struct lpfc_iocbq *cmdiocb;
1388
1389         /* software abort outstanding ADISC */
1390         lpfc_els_abort(phba, ndlp);
1391
1392         cmdiocb = (struct lpfc_iocbq *) arg;
1393
1394         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1395                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1396                         spin_lock_irq(shost->host_lock);
1397                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1398                         spin_unlock_irq(shost->host_lock);
1399                         if (vport->num_disc_nodes)
1400                                 lpfc_more_adisc(vport);
1401                 }
1402                 return ndlp->nlp_state;
1403         }
1404         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1405         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1406         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1407
1408         return ndlp->nlp_state;
1409 }
1410
1411 static uint32_t
1412 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1413                           void *arg, uint32_t evt)
1414 {
1415         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1416
1417         if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1418                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1419         return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1424                           void *arg, uint32_t evt)
1425 {
1426         struct lpfc_hba *phba = vport->phba;
1427         struct lpfc_iocbq *cmdiocb;
1428
1429         cmdiocb = (struct lpfc_iocbq *) arg;
1430
1431         /* software abort outstanding ADISC */
1432         lpfc_els_abort(phba, ndlp);
1433
1434         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1435         return ndlp->nlp_state;
1436 }
1437
1438 static uint32_t
1439 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1440                             struct lpfc_nodelist *ndlp,
1441                             void *arg, uint32_t evt)
1442 {
1443         struct lpfc_iocbq *cmdiocb;
1444
1445         cmdiocb = (struct lpfc_iocbq *) arg;
1446
1447         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1448         return ndlp->nlp_state;
1449 }
1450
1451 static uint32_t
1452 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1453                           void *arg, uint32_t evt)
1454 {
1455         struct lpfc_iocbq *cmdiocb;
1456
1457         cmdiocb = (struct lpfc_iocbq *) arg;
1458
1459         /* Treat like rcv logo */
1460         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1461         return ndlp->nlp_state;
1462 }
1463
1464 static uint32_t
1465 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1466                             struct lpfc_nodelist *ndlp,
1467                             void *arg, uint32_t evt)
1468 {
1469         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1470         struct lpfc_hba   *phba = vport->phba;
1471         struct lpfc_iocbq *cmdiocb, *rspiocb;
1472         IOCB_t *irsp;
1473         ADISC *ap;
1474         int rc;
1475
1476         cmdiocb = (struct lpfc_iocbq *) arg;
1477         rspiocb = cmdiocb->context_un.rsp_iocb;
1478
1479         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1480         irsp = &rspiocb->iocb;
1481
1482         if ((irsp->ulpStatus) ||
1483             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1484                 /* 1 sec timeout */
1485                 mod_timer(&ndlp->nlp_delayfunc,
1486                           jiffies + msecs_to_jiffies(1000));
1487                 spin_lock_irq(shost->host_lock);
1488                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1489                 spin_unlock_irq(shost->host_lock);
1490                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1491
1492                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1493                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1494
1495                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1496                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1497                 lpfc_unreg_rpi(vport, ndlp);
1498                 return ndlp->nlp_state;
1499         }
1500
1501         if (phba->sli_rev == LPFC_SLI_REV4) {
1502                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1503                 if (rc) {
1504                         /* Stay in state and retry. */
1505                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1506                         return ndlp->nlp_state;
1507                 }
1508         }
1509
1510         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1511                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1512                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1513         } else {
1514                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1515                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1516         }
1517
1518         return ndlp->nlp_state;
1519 }
1520
1521 static uint32_t
1522 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1523                            void *arg, uint32_t evt)
1524 {
1525         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1526
1527         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1528                 spin_lock_irq(shost->host_lock);
1529                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1530                 spin_unlock_irq(shost->host_lock);
1531                 return ndlp->nlp_state;
1532         } else {
1533                 /* software abort outstanding ADISC */
1534                 lpfc_els_abort(vport->phba, ndlp);
1535
1536                 lpfc_drop_node(vport, ndlp);
1537                 return NLP_STE_FREED_NODE;
1538         }
1539 }
1540
1541 static uint32_t
1542 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1543                               struct lpfc_nodelist *ndlp,
1544                               void *arg,
1545                               uint32_t evt)
1546 {
1547         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1548         struct lpfc_hba  *phba = vport->phba;
1549
1550         /* Don't do anything that will mess up processing of the
1551          * previous RSCN.
1552          */
1553         if (vport->fc_flag & FC_RSCN_DEFERRED)
1554                 return ndlp->nlp_state;
1555
1556         /* software abort outstanding ADISC */
1557         lpfc_els_abort(phba, ndlp);
1558
1559         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1560         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1561         spin_lock_irq(shost->host_lock);
1562         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1563         spin_unlock_irq(shost->host_lock);
1564         lpfc_disc_set_adisc(vport, ndlp);
1565         return ndlp->nlp_state;
1566 }
1567
1568 static uint32_t
1569 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1570                               struct lpfc_nodelist *ndlp,
1571                               void *arg,
1572                               uint32_t evt)
1573 {
1574         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1575
1576         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1577         return ndlp->nlp_state;
1578 }
1579
1580 static uint32_t
1581 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1582                              struct lpfc_nodelist *ndlp,
1583                              void *arg,
1584                              uint32_t evt)
1585 {
1586         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1587         struct ls_rjt     stat;
1588
1589         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1590                 return ndlp->nlp_state;
1591         }
1592         if (vport->phba->nvmet_support) {
1593                 /* NVME Target mode.  Handle and respond to the PRLI and
1594                  * transition to UNMAPPED provided the RPI has completed
1595                  * registration.
1596                  */
1597                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1598                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1599                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1600                 } else {
1601                         /* RPI registration has not completed. Reject the PRLI
1602                          * to prevent an illegal state transition when the
1603                          * rpi registration does complete.
1604                          */
1605                         memset(&stat, 0, sizeof(struct ls_rjt));
1606                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1607                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1608                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1609                                             ndlp, NULL);
1610                         return ndlp->nlp_state;
1611                 }
1612         } else {
1613                 /* Initiator mode. */
1614                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1615         }
1616         return ndlp->nlp_state;
1617 }
1618
1619 static uint32_t
1620 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1621                              struct lpfc_nodelist *ndlp,
1622                              void *arg,
1623                              uint32_t evt)
1624 {
1625         struct lpfc_hba   *phba = vport->phba;
1626         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1627         LPFC_MBOXQ_t      *mb;
1628         LPFC_MBOXQ_t      *nextmb;
1629         struct lpfc_dmabuf *mp;
1630
1631         cmdiocb = (struct lpfc_iocbq *) arg;
1632
1633         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1634         if ((mb = phba->sli.mbox_active)) {
1635                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1636                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1637                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1638                         lpfc_nlp_put(ndlp);
1639                         mb->context2 = NULL;
1640                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1641                 }
1642         }
1643
1644         spin_lock_irq(&phba->hbalock);
1645         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1646                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1647                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1648                         mp = (struct lpfc_dmabuf *) (mb->context1);
1649                         if (mp) {
1650                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1651                                 kfree(mp);
1652                         }
1653                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1654                         lpfc_nlp_put(ndlp);
1655                         list_del(&mb->list);
1656                         phba->sli.mboxq_cnt--;
1657                         mempool_free(mb, phba->mbox_mem_pool);
1658                 }
1659         }
1660         spin_unlock_irq(&phba->hbalock);
1661
1662         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1663         return ndlp->nlp_state;
1664 }
1665
1666 static uint32_t
1667 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1668                                struct lpfc_nodelist *ndlp,
1669                                void *arg,
1670                                uint32_t evt)
1671 {
1672         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1673
1674         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1675         return ndlp->nlp_state;
1676 }
1677
1678 static uint32_t
1679 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1680                              struct lpfc_nodelist *ndlp,
1681                              void *arg,
1682                              uint32_t evt)
1683 {
1684         struct lpfc_iocbq *cmdiocb;
1685
1686         cmdiocb = (struct lpfc_iocbq *) arg;
1687         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1688         return ndlp->nlp_state;
1689 }
1690
1691 static uint32_t
1692 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1693                                   struct lpfc_nodelist *ndlp,
1694                                   void *arg,
1695                                   uint32_t evt)
1696 {
1697         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1698         struct lpfc_hba *phba = vport->phba;
1699         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1700         MAILBOX_t *mb = &pmb->u.mb;
1701         uint32_t did  = mb->un.varWords[1];
1702         int rc = 0;
1703
1704         if (mb->mbxStatus) {
1705                 /* RegLogin failed */
1706                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1707                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1708                                  "x%x\n",
1709                                  did, mb->mbxStatus, vport->port_state,
1710                                  mb->un.varRegLogin.vpi,
1711                                  mb->un.varRegLogin.rpi);
1712                 /*
1713                  * If RegLogin failed due to lack of HBA resources do not
1714                  * retry discovery.
1715                  */
1716                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1717                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1718                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1719                         return ndlp->nlp_state;
1720                 }
1721
1722                 /* Put ndlp in npr state set plogi timer for 1 sec */
1723                 mod_timer(&ndlp->nlp_delayfunc,
1724                           jiffies + msecs_to_jiffies(1000 * 1));
1725                 spin_lock_irq(shost->host_lock);
1726                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1727                 spin_unlock_irq(shost->host_lock);
1728                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1729
1730                 lpfc_issue_els_logo(vport, ndlp, 0);
1731                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1732                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1733                 return ndlp->nlp_state;
1734         }
1735
1736         /* SLI4 ports have preallocated logical rpis. */
1737         if (phba->sli_rev < LPFC_SLI_REV4)
1738                 ndlp->nlp_rpi = mb->un.varWords[0];
1739
1740         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1741
1742         /* Only if we are not a fabric nport do we issue PRLI */
1743         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1744                          "3066 RegLogin Complete on x%x x%x x%x\n",
1745                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1746         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1747             (phba->nvmet_support == 0)) {
1748                 /* The driver supports FCP and NVME concurrently.  If the
1749                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1750                  * know what PRLI to send yet.  Figure that out now and
1751                  * call PRLI depending on the outcome.
1752                  */
1753                 if (vport->fc_flag & FC_PT2PT) {
1754                         /* If we are pt2pt, there is no Fabric to determine
1755                          * the FC4 type of the remote nport. So if NVME
1756                          * is configured try it.
1757                          */
1758                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1759                         if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1760                              (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1761                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1762                                 /* We need to update the localport also */
1763                                 lpfc_nvme_update_localport(vport);
1764                         }
1765
1766                 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1767                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1768
1769                 } else if (ndlp->nlp_fc4_type == 0) {
1770                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1771                                          0, ndlp->nlp_DID);
1772                         return ndlp->nlp_state;
1773                 }
1774
1775                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1776                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1777                 lpfc_issue_els_prli(vport, ndlp, 0);
1778         } else {
1779                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1780                         phba->targetport->port_id = vport->fc_myDID;
1781
1782                 /* Only Fabric ports should transition. NVME target
1783                  * must complete PRLI.
1784                  */
1785                 if (ndlp->nlp_type & NLP_FABRIC) {
1786                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1787                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1788                 }
1789         }
1790         return ndlp->nlp_state;
1791 }
1792
1793 static uint32_t
1794 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1795                               struct lpfc_nodelist *ndlp,
1796                               void *arg,
1797                               uint32_t evt)
1798 {
1799         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1800
1801         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1802                 spin_lock_irq(shost->host_lock);
1803                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1804                 spin_unlock_irq(shost->host_lock);
1805                 return ndlp->nlp_state;
1806         } else {
1807                 lpfc_drop_node(vport, ndlp);
1808                 return NLP_STE_FREED_NODE;
1809         }
1810 }
1811
1812 static uint32_t
1813 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1814                                  struct lpfc_nodelist *ndlp,
1815                                  void *arg,
1816                                  uint32_t evt)
1817 {
1818         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1819
1820         /* Don't do anything that will mess up processing of the
1821          * previous RSCN.
1822          */
1823         if (vport->fc_flag & FC_RSCN_DEFERRED)
1824                 return ndlp->nlp_state;
1825
1826         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1827         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1828         spin_lock_irq(shost->host_lock);
1829
1830         /* If we are a target we won't immediately transition into PRLI,
1831          * so if REG_LOGIN already completed we don't need to ignore it.
1832          */
1833         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1834             !vport->phba->nvmet_support)
1835                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1836
1837         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1838         spin_unlock_irq(shost->host_lock);
1839         lpfc_disc_set_adisc(vport, ndlp);
1840         return ndlp->nlp_state;
1841 }
1842
1843 static uint32_t
1844 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1845                           void *arg, uint32_t evt)
1846 {
1847         struct lpfc_iocbq *cmdiocb;
1848
1849         cmdiocb = (struct lpfc_iocbq *) arg;
1850
1851         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1852         return ndlp->nlp_state;
1853 }
1854
1855 static uint32_t
1856 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1857                          void *arg, uint32_t evt)
1858 {
1859         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1860
1861         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1862                 return ndlp->nlp_state;
1863         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1864         return ndlp->nlp_state;
1865 }
1866
1867 static uint32_t
1868 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1869                          void *arg, uint32_t evt)
1870 {
1871         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1872
1873         /* Software abort outstanding PRLI before sending acc */
1874         lpfc_els_abort(vport->phba, ndlp);
1875
1876         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1877         return ndlp->nlp_state;
1878 }
1879
1880 static uint32_t
1881 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1882                            void *arg, uint32_t evt)
1883 {
1884         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1885
1886         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1887         return ndlp->nlp_state;
1888 }
1889
1890 /* This routine is envoked when we rcv a PRLO request from a nport
1891  * we are logged into.  We should send back a PRLO rsp setting the
1892  * appropriate bits.
1893  * NEXT STATE = PRLI_ISSUE
1894  */
1895 static uint32_t
1896 lpfc_rcv_prlo_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         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1902         return ndlp->nlp_state;
1903 }
1904
1905 static uint32_t
1906 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1907                           void *arg, uint32_t evt)
1908 {
1909         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1910         struct lpfc_iocbq *cmdiocb, *rspiocb;
1911         struct lpfc_hba   *phba = vport->phba;
1912         IOCB_t *irsp;
1913         PRLI *npr;
1914         struct lpfc_nvme_prli *nvpr;
1915         void *temp_ptr;
1916
1917         cmdiocb = (struct lpfc_iocbq *) arg;
1918         rspiocb = cmdiocb->context_un.rsp_iocb;
1919
1920         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
1921          * format is different so NULL the two PRLI types so that the
1922          * driver correctly gets the correct context.
1923          */
1924         npr = NULL;
1925         nvpr = NULL;
1926         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1927         if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1928                 npr = (PRLI *) temp_ptr;
1929         else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1930                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1931
1932         irsp = &rspiocb->iocb;
1933         if (irsp->ulpStatus) {
1934                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1935                     vport->cfg_restrict_login) {
1936                         goto out;
1937                 }
1938
1939                 /* When the rport rejected the FCP PRLI as unsupported.
1940                  * This should only happen in Pt2Pt so an NVME PRLI
1941                  * should be outstanding still.
1942                  */
1943                 if (npr && ndlp->nlp_flag & NLP_FCP_PRLI_RJT) {
1944                         ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1945                         goto out_err;
1946                 }
1947
1948                 /* The LS Req had some error.  Don't let this be a
1949                  * target.
1950                  */
1951                 if ((ndlp->fc4_prli_sent == 1) &&
1952                     (ndlp->nlp_state == NLP_STE_PRLI_ISSUE) &&
1953                     (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_FCP_INITIATOR)))
1954                         /* The FCP PRLI completed successfully but
1955                          * the NVME PRLI failed.  Since they are sent in
1956                          * succession, allow the FCP to complete.
1957                          */
1958                         goto out_err;
1959
1960                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1961                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1962                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1963                 return ndlp->nlp_state;
1964         }
1965
1966         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1967             (npr->prliType == PRLI_FCP_TYPE)) {
1968                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1969                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1970                                  npr->initiatorFunc,
1971                                  npr->targetFunc);
1972                 if (npr->initiatorFunc)
1973                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1974                 if (npr->targetFunc) {
1975                         ndlp->nlp_type |= NLP_FCP_TARGET;
1976                         if (npr->writeXferRdyDis)
1977                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1978                 }
1979                 if (npr->Retry)
1980                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1981
1982         } else if (nvpr &&
1983                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
1984                     PRLI_REQ_EXECUTED) &&
1985                    (bf_get_be32(prli_type_code, nvpr) ==
1986                     PRLI_NVME_TYPE)) {
1987
1988                 /* Complete setting up the remote ndlp personality. */
1989                 if (bf_get_be32(prli_init, nvpr))
1990                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
1991
1992                 /* Target driver cannot solicit NVME FB. */
1993                 if (bf_get_be32(prli_tgt, nvpr)) {
1994                         /* Complete the nvme target roles.  The transport
1995                          * needs to know if the rport is capable of
1996                          * discovery in addition to its role.
1997                          */
1998                         ndlp->nlp_type |= NLP_NVME_TARGET;
1999                         if (bf_get_be32(prli_disc, nvpr))
2000                                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2001                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2002                             (bf_get_be32(prli_fb_sz, nvpr) > 0) &&
2003                             (phba->cfg_nvme_enable_fb) &&
2004                             (!phba->nvmet_support)) {
2005                                 /* Both sides support FB. The target's first
2006                                  * burst size is a 512 byte encoded value.
2007                                  */
2008                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
2009                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2010                                                                  nvpr);
2011                         }
2012                 }
2013
2014                 if (bf_get_be32(prli_recov, nvpr))
2015                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2016
2017                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2018                                  "6029 NVME PRLI Cmpl w1 x%08x "
2019                                  "w4 x%08x w5 x%08x flag x%x, "
2020                                  "fcp_info x%x nlp_type x%x\n",
2021                                  be32_to_cpu(nvpr->word1),
2022                                  be32_to_cpu(nvpr->word4),
2023                                  be32_to_cpu(nvpr->word5),
2024                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
2025                                  ndlp->nlp_type);
2026         }
2027         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2028             (vport->port_type == LPFC_NPIV_PORT) &&
2029              vport->cfg_restrict_login) {
2030 out:
2031                 spin_lock_irq(shost->host_lock);
2032                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2033                 spin_unlock_irq(shost->host_lock);
2034                 lpfc_issue_els_logo(vport, ndlp, 0);
2035
2036                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2037                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2038                 return ndlp->nlp_state;
2039         }
2040
2041 out_err:
2042         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2043          * are complete.
2044          */
2045         if (ndlp->fc4_prli_sent == 0) {
2046                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2047                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2048                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2049                 else if (ndlp->nlp_type &
2050                          (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2051                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2052         } else
2053                 lpfc_printf_vlog(vport,
2054                                  KERN_INFO, LOG_ELS,
2055                                  "3067 PRLI's still outstanding "
2056                                  "on x%06x - count %d, Pend Node Mode "
2057                                  "transition...\n",
2058                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2059
2060         return ndlp->nlp_state;
2061 }
2062
2063 /*! lpfc_device_rm_prli_issue
2064  *
2065  * \pre
2066  * \post
2067  * \param   phba
2068  * \param   ndlp
2069  * \param   arg
2070  * \param   evt
2071  * \return  uint32_t
2072  *
2073  * \b Description:
2074  *    This routine is envoked when we a request to remove a nport we are in the
2075  *    process of PRLIing. We should software abort outstanding prli, unreg
2076  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2077  *    on plogi list so it can be freed when LOGO completes.
2078  *
2079  */
2080
2081 static uint32_t
2082 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2083                           void *arg, uint32_t evt)
2084 {
2085         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2086
2087         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2088                 spin_lock_irq(shost->host_lock);
2089                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2090                 spin_unlock_irq(shost->host_lock);
2091                 return ndlp->nlp_state;
2092         } else {
2093                 /* software abort outstanding PLOGI */
2094                 lpfc_els_abort(vport->phba, ndlp);
2095
2096                 lpfc_drop_node(vport, ndlp);
2097                 return NLP_STE_FREED_NODE;
2098         }
2099 }
2100
2101
2102 /*! lpfc_device_recov_prli_issue
2103  *
2104  * \pre
2105  * \post
2106  * \param   phba
2107  * \param   ndlp
2108  * \param   arg
2109  * \param   evt
2110  * \return  uint32_t
2111  *
2112  * \b Description:
2113  *    The routine is envoked when the state of a device is unknown, like
2114  *    during a link down. We should remove the nodelist entry from the
2115  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2116  *    outstanding PRLI command, then free the node entry.
2117  */
2118 static uint32_t
2119 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2120                              struct lpfc_nodelist *ndlp,
2121                              void *arg,
2122                              uint32_t evt)
2123 {
2124         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2125         struct lpfc_hba  *phba = vport->phba;
2126
2127         /* Don't do anything that will mess up processing of the
2128          * previous RSCN.
2129          */
2130         if (vport->fc_flag & FC_RSCN_DEFERRED)
2131                 return ndlp->nlp_state;
2132
2133         /* software abort outstanding PRLI */
2134         lpfc_els_abort(phba, ndlp);
2135
2136         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2137         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2138         spin_lock_irq(shost->host_lock);
2139         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2140         spin_unlock_irq(shost->host_lock);
2141         lpfc_disc_set_adisc(vport, ndlp);
2142         return ndlp->nlp_state;
2143 }
2144
2145 static uint32_t
2146 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2147                           void *arg, uint32_t evt)
2148 {
2149         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2150         struct ls_rjt     stat;
2151
2152         memset(&stat, 0, sizeof(struct ls_rjt));
2153         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2154         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2155         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2156         return ndlp->nlp_state;
2157 }
2158
2159 static uint32_t
2160 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2161                          void *arg, uint32_t evt)
2162 {
2163         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2164         struct ls_rjt     stat;
2165
2166         memset(&stat, 0, sizeof(struct ls_rjt));
2167         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2168         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2169         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2170         return ndlp->nlp_state;
2171 }
2172
2173 static uint32_t
2174 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2175                          void *arg, uint32_t evt)
2176 {
2177         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2178         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2179
2180         spin_lock_irq(shost->host_lock);
2181         ndlp->nlp_flag |= NLP_LOGO_ACC;
2182         spin_unlock_irq(shost->host_lock);
2183         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2184         return ndlp->nlp_state;
2185 }
2186
2187 static uint32_t
2188 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2189                            void *arg, uint32_t evt)
2190 {
2191         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2192         struct ls_rjt     stat;
2193
2194         memset(&stat, 0, sizeof(struct ls_rjt));
2195         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2196         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2197         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2198         return ndlp->nlp_state;
2199 }
2200
2201 static uint32_t
2202 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2203                          void *arg, uint32_t evt)
2204 {
2205         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2206         struct ls_rjt     stat;
2207
2208         memset(&stat, 0, sizeof(struct ls_rjt));
2209         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2210         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2211         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2212         return ndlp->nlp_state;
2213 }
2214
2215 static uint32_t
2216 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2217                           void *arg, uint32_t evt)
2218 {
2219         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2220
2221         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2222         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2223         spin_lock_irq(shost->host_lock);
2224         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2225         spin_unlock_irq(shost->host_lock);
2226         lpfc_disc_set_adisc(vport, ndlp);
2227         return ndlp->nlp_state;
2228 }
2229
2230 static uint32_t
2231 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2232                           void *arg, uint32_t evt)
2233 {
2234         /*
2235          * DevLoss has timed out and is calling for Device Remove.
2236          * In this case, abort the LOGO and cleanup the ndlp
2237          */
2238
2239         lpfc_unreg_rpi(vport, ndlp);
2240         /* software abort outstanding PLOGI */
2241         lpfc_els_abort(vport->phba, ndlp);
2242         lpfc_drop_node(vport, ndlp);
2243         return NLP_STE_FREED_NODE;
2244 }
2245
2246 static uint32_t
2247 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2248                              struct lpfc_nodelist *ndlp,
2249                              void *arg, uint32_t evt)
2250 {
2251         /*
2252          * Device Recovery events have no meaning for a node with a LOGO
2253          * outstanding.  The LOGO has to complete first and handle the
2254          * node from that point.
2255          */
2256         return ndlp->nlp_state;
2257 }
2258
2259 static uint32_t
2260 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2261                           void *arg, uint32_t evt)
2262 {
2263         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2264
2265         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2266         return ndlp->nlp_state;
2267 }
2268
2269 static uint32_t
2270 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2271                          void *arg, uint32_t evt)
2272 {
2273         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2274
2275         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2276                 return ndlp->nlp_state;
2277
2278         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2279         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2280         return ndlp->nlp_state;
2281 }
2282
2283 static uint32_t
2284 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2285                          void *arg, uint32_t evt)
2286 {
2287         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2288
2289         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2290         return ndlp->nlp_state;
2291 }
2292
2293 static uint32_t
2294 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2295                            void *arg, uint32_t evt)
2296 {
2297         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2298
2299         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2300         return ndlp->nlp_state;
2301 }
2302
2303 static uint32_t
2304 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2305                          void *arg, uint32_t evt)
2306 {
2307         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2308
2309         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2310         return ndlp->nlp_state;
2311 }
2312
2313 static uint32_t
2314 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2315                              struct lpfc_nodelist *ndlp,
2316                              void *arg,
2317                              uint32_t evt)
2318 {
2319         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2320
2321         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2322         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2323         spin_lock_irq(shost->host_lock);
2324         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2325         spin_unlock_irq(shost->host_lock);
2326         lpfc_disc_set_adisc(vport, ndlp);
2327
2328         return ndlp->nlp_state;
2329 }
2330
2331 static uint32_t
2332 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2333                            void *arg, uint32_t evt)
2334 {
2335         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2336
2337         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2338         return ndlp->nlp_state;
2339 }
2340
2341 static uint32_t
2342 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2343                           void *arg, uint32_t evt)
2344 {
2345         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2346
2347         if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2348                 return ndlp->nlp_state;
2349         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2350         return ndlp->nlp_state;
2351 }
2352
2353 static uint32_t
2354 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2355                           void *arg, uint32_t evt)
2356 {
2357         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2358
2359         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2360         return ndlp->nlp_state;
2361 }
2362
2363 static uint32_t
2364 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2365                             struct lpfc_nodelist *ndlp,
2366                             void *arg, uint32_t evt)
2367 {
2368         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2369
2370         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2371         return ndlp->nlp_state;
2372 }
2373
2374 static uint32_t
2375 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2376                           void *arg, uint32_t evt)
2377 {
2378         struct lpfc_hba  *phba = vport->phba;
2379         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2380
2381         /* flush the target */
2382         lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2383                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2384
2385         /* Treat like rcv logo */
2386         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2387         return ndlp->nlp_state;
2388 }
2389
2390 static uint32_t
2391 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2392                               struct lpfc_nodelist *ndlp,
2393                               void *arg,
2394                               uint32_t evt)
2395 {
2396         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2397
2398         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2399         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2400         spin_lock_irq(shost->host_lock);
2401         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2402         spin_unlock_irq(shost->host_lock);
2403         lpfc_disc_set_adisc(vport, ndlp);
2404         return ndlp->nlp_state;
2405 }
2406
2407 static uint32_t
2408 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2409                         void *arg, uint32_t evt)
2410 {
2411         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2412         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2413
2414         /* Ignore PLOGI if we have an outstanding LOGO */
2415         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2416                 return ndlp->nlp_state;
2417         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2418                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2419                 spin_lock_irq(shost->host_lock);
2420                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2421                 spin_unlock_irq(shost->host_lock);
2422         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2423                 /* send PLOGI immediately, move to PLOGI issue state */
2424                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2425                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2426                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2427                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2428                 }
2429         }
2430         return ndlp->nlp_state;
2431 }
2432
2433 static uint32_t
2434 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2435                        void *arg, uint32_t evt)
2436 {
2437         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2438         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2439         struct ls_rjt     stat;
2440
2441         memset(&stat, 0, sizeof (struct ls_rjt));
2442         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2443         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2444         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2445
2446         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2447                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2448                         spin_lock_irq(shost->host_lock);
2449                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2450                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2451                         spin_unlock_irq(shost->host_lock);
2452                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2453                         lpfc_issue_els_adisc(vport, ndlp, 0);
2454                 } else {
2455                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2456                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2457                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2458                 }
2459         }
2460         return ndlp->nlp_state;
2461 }
2462
2463 static uint32_t
2464 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2465                        void *arg, uint32_t evt)
2466 {
2467         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2468
2469         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2470         return ndlp->nlp_state;
2471 }
2472
2473 static uint32_t
2474 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2475                          void *arg, uint32_t evt)
2476 {
2477         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2478
2479         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2480         /*
2481          * Do not start discovery if discovery is about to start
2482          * or discovery in progress for this node. Starting discovery
2483          * here will affect the counting of discovery threads.
2484          */
2485         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2486             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2487                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2488                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2489                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2490                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2491                         lpfc_issue_els_adisc(vport, ndlp, 0);
2492                 } else {
2493                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2494                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2495                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2496                 }
2497         }
2498         return ndlp->nlp_state;
2499 }
2500
2501 static uint32_t
2502 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2503                        void *arg, uint32_t evt)
2504 {
2505         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2506         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2507
2508         spin_lock_irq(shost->host_lock);
2509         ndlp->nlp_flag |= NLP_LOGO_ACC;
2510         spin_unlock_irq(shost->host_lock);
2511
2512         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2513
2514         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2515                 mod_timer(&ndlp->nlp_delayfunc,
2516                           jiffies + msecs_to_jiffies(1000 * 1));
2517                 spin_lock_irq(shost->host_lock);
2518                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2519                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2520                 spin_unlock_irq(shost->host_lock);
2521                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2522         } else {
2523                 spin_lock_irq(shost->host_lock);
2524                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2525                 spin_unlock_irq(shost->host_lock);
2526         }
2527         return ndlp->nlp_state;
2528 }
2529
2530 static uint32_t
2531 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2532                          void *arg, uint32_t evt)
2533 {
2534         struct lpfc_iocbq *cmdiocb, *rspiocb;
2535         IOCB_t *irsp;
2536         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2537
2538         cmdiocb = (struct lpfc_iocbq *) arg;
2539         rspiocb = cmdiocb->context_un.rsp_iocb;
2540
2541         irsp = &rspiocb->iocb;
2542         if (irsp->ulpStatus) {
2543                 spin_lock_irq(shost->host_lock);
2544                 ndlp->nlp_flag |= NLP_DEFER_RM;
2545                 spin_unlock_irq(shost->host_lock);
2546                 return NLP_STE_FREED_NODE;
2547         }
2548         return ndlp->nlp_state;
2549 }
2550
2551 static uint32_t
2552 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2553                         void *arg, uint32_t evt)
2554 {
2555         struct lpfc_iocbq *cmdiocb, *rspiocb;
2556         IOCB_t *irsp;
2557
2558         cmdiocb = (struct lpfc_iocbq *) arg;
2559         rspiocb = cmdiocb->context_un.rsp_iocb;
2560
2561         irsp = &rspiocb->iocb;
2562         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2563                 lpfc_drop_node(vport, ndlp);
2564                 return NLP_STE_FREED_NODE;
2565         }
2566         return ndlp->nlp_state;
2567 }
2568
2569 static uint32_t
2570 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2571                         void *arg, uint32_t evt)
2572 {
2573         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2574
2575         /* For the fabric port just clear the fc flags. */
2576         if (ndlp->nlp_DID == Fabric_DID) {
2577                 spin_lock_irq(shost->host_lock);
2578                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2579                 spin_unlock_irq(shost->host_lock);
2580         }
2581         lpfc_unreg_rpi(vport, ndlp);
2582         return ndlp->nlp_state;
2583 }
2584
2585 static uint32_t
2586 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2587                          void *arg, uint32_t evt)
2588 {
2589         struct lpfc_iocbq *cmdiocb, *rspiocb;
2590         IOCB_t *irsp;
2591
2592         cmdiocb = (struct lpfc_iocbq *) arg;
2593         rspiocb = cmdiocb->context_un.rsp_iocb;
2594
2595         irsp = &rspiocb->iocb;
2596         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2597                 lpfc_drop_node(vport, ndlp);
2598                 return NLP_STE_FREED_NODE;
2599         }
2600         return ndlp->nlp_state;
2601 }
2602
2603 static uint32_t
2604 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2605                             struct lpfc_nodelist *ndlp,
2606                             void *arg, uint32_t evt)
2607 {
2608         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2609         MAILBOX_t    *mb = &pmb->u.mb;
2610
2611         if (!mb->mbxStatus) {
2612                 /* SLI4 ports have preallocated logical rpis. */
2613                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2614                         ndlp->nlp_rpi = mb->un.varWords[0];
2615                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2616                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2617                         lpfc_unreg_rpi(vport, ndlp);
2618                 }
2619         } else {
2620                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2621                         lpfc_drop_node(vport, ndlp);
2622                         return NLP_STE_FREED_NODE;
2623                 }
2624         }
2625         return ndlp->nlp_state;
2626 }
2627
2628 static uint32_t
2629 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2630                         void *arg, uint32_t evt)
2631 {
2632         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2633
2634         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2635                 spin_lock_irq(shost->host_lock);
2636                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2637                 spin_unlock_irq(shost->host_lock);
2638                 return ndlp->nlp_state;
2639         }
2640         lpfc_drop_node(vport, ndlp);
2641         return NLP_STE_FREED_NODE;
2642 }
2643
2644 static uint32_t
2645 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2646                            void *arg, uint32_t evt)
2647 {
2648         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2649
2650         /* Don't do anything that will mess up processing of the
2651          * previous RSCN.
2652          */
2653         if (vport->fc_flag & FC_RSCN_DEFERRED)
2654                 return ndlp->nlp_state;
2655
2656         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2657         spin_lock_irq(shost->host_lock);
2658         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2659         spin_unlock_irq(shost->host_lock);
2660         return ndlp->nlp_state;
2661 }
2662
2663
2664 /* This next section defines the NPort Discovery State Machine */
2665
2666 /* There are 4 different double linked lists nodelist entries can reside on.
2667  * The plogi list and adisc list are used when Link Up discovery or RSCN
2668  * processing is needed. Each list holds the nodes that we will send PLOGI
2669  * or ADISC on. These lists will keep track of what nodes will be effected
2670  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2671  * The unmapped_list will contain all nodes that we have successfully logged
2672  * into at the Fibre Channel level. The mapped_list will contain all nodes
2673  * that are mapped FCP targets.
2674  */
2675 /*
2676  * The bind list is a list of undiscovered (potentially non-existent) nodes
2677  * that we have saved binding information on. This information is used when
2678  * nodes transition from the unmapped to the mapped list.
2679  */
2680 /* For UNUSED_NODE state, the node has just been allocated .
2681  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2682  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2683  * and put on the unmapped list. For ADISC processing, the node is taken off
2684  * the ADISC list and placed on either the mapped or unmapped list (depending
2685  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2686  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2687  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2688  * node, the node is taken off the unmapped list. The binding list is checked
2689  * for a valid binding, or a binding is automatically assigned. If binding
2690  * assignment is unsuccessful, the node is left on the unmapped list. If
2691  * binding assignment is successful, the associated binding list entry (if
2692  * any) is removed, and the node is placed on the mapped list.
2693  */
2694 /*
2695  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2696  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2697  * expire, all effected nodes will receive a DEVICE_RM event.
2698  */
2699 /*
2700  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2701  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2702  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2703  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2704  * we will first process the ADISC list.  32 entries are processed initially and
2705  * ADISC is initited for each one.  Completions / Events for each node are
2706  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2707  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2708  * waiting, and the ADISC list count is identically 0, then we are done. For
2709  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2710  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2711  * list.  32 entries are processed initially and PLOGI is initited for each one.
2712  * Completions / Events for each node are funnelled thru the state machine.  As
2713  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2714  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2715  * indentically 0, then we are done. We have now completed discovery / RSCN
2716  * handling. Upon completion, ALL nodes should be on either the mapped or
2717  * unmapped lists.
2718  */
2719
2720 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2721      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2722         /* Action routine                  Event       Current State  */
2723         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2724         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2725         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2726         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2727         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2728         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2729         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2730         lpfc_disc_illegal,              /* CMPL_PRLI       */
2731         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2732         lpfc_disc_illegal,              /* CMPL_ADISC      */
2733         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2734         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2735         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2736
2737         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2738         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2739         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2740         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2741         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2742         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2743         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2744         lpfc_disc_illegal,              /* CMPL_PRLI       */
2745         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2746         lpfc_disc_illegal,              /* CMPL_ADISC      */
2747         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2748         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2749         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2750
2751         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2752         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2753         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2754         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2755         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2756         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2757         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2758         lpfc_disc_illegal,              /* CMPL_PRLI       */
2759         lpfc_disc_illegal,              /* CMPL_LOGO       */
2760         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2761         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2762         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2763         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2764
2765         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2766         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2767         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2768         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2769         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2770         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2771         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2772         lpfc_disc_illegal,              /* CMPL_PRLI       */
2773         lpfc_disc_illegal,              /* CMPL_LOGO       */
2774         lpfc_disc_illegal,              /* CMPL_ADISC      */
2775         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2776         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2777         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2778
2779         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2780         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2781         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2782         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2783         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2784         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2785         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2786         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2787         lpfc_disc_illegal,              /* CMPL_LOGO       */
2788         lpfc_disc_illegal,              /* CMPL_ADISC      */
2789         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2790         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2791         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2792
2793         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2794         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2795         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2796         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2797         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2798         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2799         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2800         lpfc_disc_illegal,              /* CMPL_PRLI       */
2801         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2802         lpfc_disc_illegal,              /* CMPL_ADISC      */
2803         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2804         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2805         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2806
2807         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2808         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2809         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2810         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2811         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2812         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2813         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2814         lpfc_disc_illegal,              /* CMPL_PRLI       */
2815         lpfc_disc_illegal,              /* CMPL_LOGO       */
2816         lpfc_disc_illegal,              /* CMPL_ADISC      */
2817         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2818         lpfc_disc_illegal,              /* DEVICE_RM       */
2819         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2820
2821         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2822         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2823         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2824         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2825         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2826         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2827         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2828         lpfc_disc_illegal,              /* CMPL_PRLI       */
2829         lpfc_disc_illegal,              /* CMPL_LOGO       */
2830         lpfc_disc_illegal,              /* CMPL_ADISC      */
2831         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2832         lpfc_disc_illegal,              /* DEVICE_RM       */
2833         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2834
2835         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2836         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2837         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2838         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2839         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2840         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2841         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2842         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2843         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2844         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2845         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2846         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2847         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2848 };
2849
2850 int
2851 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2852                         void *arg, uint32_t evt)
2853 {
2854         uint32_t cur_state, rc;
2855         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2856                          uint32_t);
2857         uint32_t got_ndlp = 0;
2858
2859         if (lpfc_nlp_get(ndlp))
2860                 got_ndlp = 1;
2861
2862         cur_state = ndlp->nlp_state;
2863
2864         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2865         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2866                          "0211 DSM in event x%x on NPort x%x in "
2867                          "state %d Data: x%x\n",
2868                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2869
2870         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2871                  "DSM in:          evt:%d ste:%d did:x%x",
2872                 evt, cur_state, ndlp->nlp_DID);
2873
2874         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2875         rc = (func) (vport, ndlp, arg, evt);
2876
2877         /* DSM out state <rc> on NPort <nlp_DID> */
2878         if (got_ndlp) {
2879                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2880                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2881                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2882
2883                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2884                         "DSM out:         ste:%d did:x%x flg:x%x",
2885                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2886                 /* Decrement the ndlp reference count held for this function */
2887                 lpfc_nlp_put(ndlp);
2888         } else {
2889                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2890                         "0213 DSM out state %d on NPort free\n", rc);
2891
2892                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2893                         "DSM out:         ste:%d did:x%x flg:x%x",
2894                         rc, 0, 0);
2895         }
2896
2897         return rc;
2898 }