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 int
 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         /* Abort outstanding I/O on NPort <nlp_DID> */
 219         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 220                          "2819 Abort outstanding I/O on NPort x%x "
 221                          "Data: x%x x%x x%x\n",
 222                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 223                          ndlp->nlp_rpi);
 224         /* Clean up all fabric IOs first.*/
 225         lpfc_fabric_abort_nport(ndlp);
 226
 227         /*
 228          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 229          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 230          * txcmplq so that the abort operation completes them successfully.
 231          */
 232         spin_lock_irq(&phba->hbalock);
 233         if (phba->sli_rev == LPFC_SLI_REV4)
 234                 spin_lock(&pring->ring_lock);
 235         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 236         /* Add to abort_list on on NDLP match. */
 237                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 238                         list_add_tail(&iocb->dlist, &abort_list);
 239         }
 240         if (phba->sli_rev == LPFC_SLI_REV4)
 241                 spin_unlock(&pring->ring_lock);
 242         spin_unlock_irq(&phba->hbalock);
 243
 244         /* Abort the targeted IOs and remove them from the abort list. */
 245         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 246                         spin_lock_irq(&phba->hbalock);
 247                         list_del_init(&iocb->dlist);
 248                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 249                         spin_unlock_irq(&phba->hbalock);
 250         }
 251
 252         INIT_LIST_HEAD(&abort_list);
 253
 254         /* Now process the txq */
 255         spin_lock_irq(&phba->hbalock);
 256         if (phba->sli_rev == LPFC_SLI_REV4)
 257                 spin_lock(&pring->ring_lock);
 258
 259         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 260                 /* Check to see if iocb matches the nport we are looking for */
 261                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 262                         list_del_init(&iocb->list);
 263                         list_add_tail(&iocb->list, &abort_list);
 264                 }
 265         }
 266
 267         if (phba->sli_rev == LPFC_SLI_REV4)
 268                 spin_unlock(&pring->ring_lock);
 269         spin_unlock_irq(&phba->hbalock);
 270
 271         /* Cancel all the IOCBs from the completions list */
 272         lpfc_sli_cancel_iocbs(phba, &abort_list,
 273                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 274
 275         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 276         return 0;
 277 }
 278
 279 static int
 280 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 281                struct lpfc_iocbq *cmdiocb)
 282 {
 283         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 284         struct lpfc_hba    *phba = vport->phba;
 285         struct lpfc_dmabuf *pcmd;
 286         uint64_t nlp_portwwn = 0;
 287         uint32_t *lp;
 288         IOCB_t *icmd;
 289         struct serv_parm *sp;
 290         uint32_t ed_tov;
 291         LPFC_MBOXQ_t *mbox;
 292         struct ls_rjt stat;
 293         uint32_t vid, flag;
 294         int rc;
 295
 296         memset(&stat, 0, sizeof (struct ls_rjt));
 297         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 298         lp = (uint32_t *) pcmd->virt;
 299         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 300         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 301                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 302                                  "0140 PLOGI Reject: invalid nname\n");
 303                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 304                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 305                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 306                         NULL);
 307                 return 0;
 308         }
 309         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 310                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 311                                  "0141 PLOGI Reject: invalid pname\n");
 312                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 313                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 314                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 315                         NULL);
 316                 return 0;
 317         }
 318
 319         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 320         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 321                 /* Reject this request because invalid parameters */
 322                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 323                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 324                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 325                         NULL);
 326                 return 0;
 327         }
 328         icmd = &cmdiocb->iocb;
 329
 330         /* PLOGI chkparm OK */
 331         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 332                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 333                          "x%x x%x x%x\n",
 334                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 335                          ndlp->nlp_rpi, vport->port_state,
 336                          vport->fc_flag);
 337
 338         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 339                 ndlp->nlp_fcp_info |= CLASS2;
 340         else
 341                 ndlp->nlp_fcp_info |= CLASS3;
 342
 343         ndlp->nlp_class_sup = 0;
 344         if (sp->cls1.classValid)
 345                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 346         if (sp->cls2.classValid)
 347                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 348         if (sp->cls3.classValid)
 349                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 350         if (sp->cls4.classValid)
 351                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 352         ndlp->nlp_maxframe =
 353                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 354
 355         /* if already logged in, do implicit logout */
 356         switch (ndlp->nlp_state) {
 357         case  NLP_STE_NPR_NODE:
 358                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 359                         break;
 360         case  NLP_STE_REG_LOGIN_ISSUE:
 361         case  NLP_STE_PRLI_ISSUE:
 362         case  NLP_STE_UNMAPPED_NODE:
 363         case  NLP_STE_MAPPED_NODE:
 364                 /* lpfc_plogi_confirm_nport skips fabric did, handle it here */
 365                 if (!(ndlp->nlp_type & NLP_FABRIC)) {
 366                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 367                                          ndlp, NULL);
 368                         return 1;
 369                 }
 370                 if (nlp_portwwn != 0 &&
 371                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 372                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 373                                          "0143 PLOGI recv'd from DID: x%x "
 374                                          "WWPN changed: old %llx new %llx\n",
 375                                          ndlp->nlp_DID,
 376                                          (unsigned long long)nlp_portwwn,
 377                                          (unsigned long long)
 378                                          wwn_to_u64(sp->portName.u.wwn));
 379
 380                 ndlp->nlp_prev_state = ndlp->nlp_state;
 381                 /* rport needs to be unregistered first */
 382                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 383                 break;
 384         }
 385
 386         /* Check for Nport to NPort pt2pt protocol */
 387         if ((vport->fc_flag & FC_PT2PT) &&
 388             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 389                 /* rcv'ed PLOGI decides what our NPortId will be */
 390                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 391
 392                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 393                 if (sp->cmn.edtovResolution) {
 394                         /* E_D_TOV ticks are in nanoseconds */
 395                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 396                 }
 397
 398                 /*
 399                  * For pt-to-pt, use the larger EDTOV
 400                  * RATOV = 2 * EDTOV
 401                  */
 402                 if (ed_tov > phba->fc_edtov)
 403                         phba->fc_edtov = ed_tov;
 404                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 405
 406                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 407
 408                 /* Issue config_link / reg_vfi to account for updated TOV's */
 409
 410                 if (phba->sli_rev == LPFC_SLI_REV4)
 411                         lpfc_issue_reg_vfi(vport);
 412                 else {
 413                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 414                         if (mbox == NULL)
 415                                 goto out;
 416                         lpfc_config_link(phba, mbox);
 417                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 418                         mbox->vport = vport;
 419                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 420                         if (rc == MBX_NOT_FINISHED) {
 421                                 mempool_free(mbox, phba->mbox_mem_pool);
 422                                 goto out;
 423                         }
 424                 }
 425
 426                 lpfc_can_disctmo(vport);
 427         }
 428
 429         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
 430         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
 431             sp->cmn.valid_vendor_ver_level) {
 432                 vid = be32_to_cpu(sp->un.vv.vid);
 433                 flag = be32_to_cpu(sp->un.vv.flags);
 434                 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
 435                         ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
 436         }
 437
 438         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 439         if (!mbox)
 440                 goto out;
 441
 442         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 443         if (phba->sli_rev == LPFC_SLI_REV4)
 444                 lpfc_unreg_rpi(vport, ndlp);
 445
 446         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 447                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 448         if (rc) {
 449                 mempool_free(mbox, phba->mbox_mem_pool);
 450                 goto out;
 451         }
 452
 453         /* ACC PLOGI rsp command needs to execute first,
 454          * queue this mbox command to be processed later.
 455          */
 456         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 457         /*
 458          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 459          * command issued in lpfc_cmpl_els_acc().
 460          */
 461         mbox->vport = vport;
 462         spin_lock_irq(shost->host_lock);
 463         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 464         spin_unlock_irq(shost->host_lock);
 465
 466         /*
 467          * If there is an outstanding PLOGI issued, abort it before
 468          * sending ACC rsp for received PLOGI. If pending plogi
 469          * is not canceled here, the plogi will be rejected by
 470          * remote port and will be retried. On a configuration with
 471          * single discovery thread, this will cause a huge delay in
 472          * discovery. Also this will cause multiple state machines
 473          * running in parallel for this node.
 474          */
 475         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 476                 /* software abort outstanding PLOGI */
 477                 lpfc_els_abort(phba, ndlp);
 478         }
 479
 480         if ((vport->port_type == LPFC_NPIV_PORT &&
 481              vport->cfg_restrict_login)) {
 482
 483                 /* In order to preserve RPIs, we want to cleanup
 484                  * the default RPI the firmware created to rcv
 485                  * this ELS request. The only way to do this is
 486                  * to register, then unregister the RPI.
 487                  */
 488                 spin_lock_irq(shost->host_lock);
 489                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 490                 spin_unlock_irq(shost->host_lock);
 491                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 492                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 493                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 494                         ndlp, mbox);
 495                 if (rc)
 496                         mempool_free(mbox, phba->mbox_mem_pool);
 497                 return 1;
 498         }
 499         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 500         if (rc)
 501                 mempool_free(mbox, phba->mbox_mem_pool);
 502         return 1;
 503 out:
 504         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 505         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 506         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 507         return 0;
 508 }
 509
 510 /**
 511  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 512  * @phba: pointer to lpfc hba data structure.
 513  * @mboxq: pointer to mailbox object
 514  *
 515  * This routine is invoked to issue a completion to a rcv'ed
 516  * ADISC or PDISC after the paused RPI has been resumed.
 517  **/
 518 static void
 519 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 520 {
 521         struct lpfc_vport *vport;
 522         struct lpfc_iocbq *elsiocb;
 523         struct lpfc_nodelist *ndlp;
 524         uint32_t cmd;
 525
 526         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 527         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 528         vport = mboxq->vport;
 529         cmd = elsiocb->drvrTimeout;
 530
 531         if (cmd == ELS_CMD_ADISC) {
 532                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 533         } else {
 534                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 535                         ndlp, NULL);
 536         }
 537         kfree(elsiocb);
 538         mempool_free(mboxq, phba->mbox_mem_pool);
 539 }
 540
 541 static int
 542 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 543                 struct lpfc_iocbq *cmdiocb)
 544 {
 545         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 546         struct lpfc_iocbq  *elsiocb;
 547         struct lpfc_dmabuf *pcmd;
 548         struct serv_parm   *sp;
 549         struct lpfc_name   *pnn, *ppn;
 550         struct ls_rjt stat;
 551         ADISC *ap;
 552         IOCB_t *icmd;
 553         uint32_t *lp;
 554         uint32_t cmd;
 555
 556         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 557         lp = (uint32_t *) pcmd->virt;
 558
 559         cmd = *lp++;
 560         if (cmd == ELS_CMD_ADISC) {
 561                 ap = (ADISC *) lp;
 562                 pnn = (struct lpfc_name *) & ap->nodeName;
 563                 ppn = (struct lpfc_name *) & ap->portName;
 564         } else {
 565                 sp = (struct serv_parm *) lp;
 566                 pnn = (struct lpfc_name *) & sp->nodeName;
 567                 ppn = (struct lpfc_name *) & sp->portName;
 568         }
 569
 570         icmd = &cmdiocb->iocb;
 571         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 572
 573                 /*
 574                  * As soon as  we send ACC, the remote NPort can
 575                  * start sending us data. Thus, for SLI4 we must
 576                  * resume the RPI before the ACC goes out.
 577                  */
 578                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 579                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 580                                 GFP_KERNEL);
 581                         if (elsiocb) {
 582
 583                                 /* Save info from cmd IOCB used in rsp */
 584                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 585                                         sizeof(struct lpfc_iocbq));
 586
 587                                 /* Save the ELS cmd */
 588                                 elsiocb->drvrTimeout = cmd;
 589
 590                                 lpfc_sli4_resume_rpi(ndlp,
 591                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 592                                 goto out;
 593                         }
 594                 }
 595
 596                 if (cmd == ELS_CMD_ADISC) {
 597                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 598                 } else {
 599                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 600                                 ndlp, NULL);
 601                 }
 602 out:
 603                 /* If we are authenticated, move to the proper state */
 604                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 605                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 606                 else
 607                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 608
 609                 return 1;
 610         }
 611         /* Reject this request because invalid parameters */
 612         stat.un.b.lsRjtRsvd0 = 0;
 613         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 614         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 615         stat.un.b.vendorUnique = 0;
 616         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 617
 618         /* 1 sec timeout */
 619         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 620
 621         spin_lock_irq(shost->host_lock);
 622         ndlp->nlp_flag |= NLP_DELAY_TMO;
 623         spin_unlock_irq(shost->host_lock);
 624         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 625         ndlp->nlp_prev_state = ndlp->nlp_state;
 626         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 627         return 0;
 628 }
 629
 630 static int
 631 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 632               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 633 {
 634         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 635         struct lpfc_hba    *phba = vport->phba;
 636         struct lpfc_vport **vports;
 637         int i, active_vlink_present = 0 ;
 638
 639         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 640         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 641          * PLOGIs during LOGO storms from a device.
 642          */
 643         spin_lock_irq(shost->host_lock);
 644         ndlp->nlp_flag |= NLP_LOGO_ACC;
 645         spin_unlock_irq(shost->host_lock);
 646         if (els_cmd == ELS_CMD_PRLO)
 647                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 648         else
 649                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 650         if (ndlp->nlp_DID == Fabric_DID) {
 651                 if (vport->port_state <= LPFC_FDISC)
 652                         goto out;
 653                 lpfc_linkdown_port(vport);
 654                 spin_lock_irq(shost->host_lock);
 655                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 656                 spin_unlock_irq(shost->host_lock);
 657                 vports = lpfc_create_vport_work_array(phba);
 658                 if (vports) {
 659                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 660                                         i++) {
 661                                 if ((!(vports[i]->fc_flag &
 662                                         FC_VPORT_LOGO_RCVD)) &&
 663                                         (vports[i]->port_state > LPFC_FDISC)) {
 664                                         active_vlink_present = 1;
 665                                         break;
 666                                 }
 667                         }
 668                         lpfc_destroy_vport_work_array(phba, vports);
 669                 }
 670
 671                 /*
 672                  * Don't re-instantiate if vport is marked for deletion.
 673                  * If we are here first then vport_delete is going to wait
 674                  * for discovery to complete.
 675                  */
 676                 if (!(vport->load_flag & FC_UNLOADING) &&
 677                                         active_vlink_present) {
 678                         /*
 679                          * If there are other active VLinks present,
 680                          * re-instantiate the Vlink using FDISC.
 681                          */
 682                         mod_timer(&ndlp->nlp_delayfunc,
 683                                   jiffies + msecs_to_jiffies(1000));
 684                         spin_lock_irq(shost->host_lock);
 685                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 686                         spin_unlock_irq(shost->host_lock);
 687                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 688                         vport->port_state = LPFC_FDISC;
 689                 } else {
 690                         spin_lock_irq(shost->host_lock);
 691                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 692                         spin_unlock_irq(shost->host_lock);
 693                         lpfc_retry_pport_discovery(phba);
 694                 }
 695         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 696                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 697                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 698                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 699                 /* Only try to re-login if this is NOT a Fabric Node */
 700                 mod_timer(&ndlp->nlp_delayfunc,
 701                           jiffies + msecs_to_jiffies(1000 * 1));
 702                 spin_lock_irq(shost->host_lock);
 703                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 704                 spin_unlock_irq(shost->host_lock);
 705
 706                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 707         }
 708 out:
 709         ndlp->nlp_prev_state = ndlp->nlp_state;
 710         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 711
 712         spin_lock_irq(shost->host_lock);
 713         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 714         spin_unlock_irq(shost->host_lock);
 715         /* The driver has to wait until the ACC completes before it continues
 716          * processing the LOGO.  The action will resume in
 717          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 718          * unreg_login, the driver waits so the ACC does not get aborted.
 719          */
 720         return 0;
 721 }
 722
 723 static void
 724 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 725               struct lpfc_iocbq *cmdiocb)
 726 {
 727         struct lpfc_hba  *phba = vport->phba;
 728         struct lpfc_dmabuf *pcmd;
 729         uint32_t *lp;
 730         PRLI *npr;
 731         struct fc_rport *rport = ndlp->rport;
 732         u32 roles;
 733
 734         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 735         lp = (uint32_t *) pcmd->virt;
 736         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 737
 738         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 739         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 740         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 741         if ((npr->prliType == PRLI_FCP_TYPE) ||
 742             (npr->prliType == PRLI_NVME_TYPE)) {
 743                 if (npr->initiatorFunc) {
 744                         if (npr->prliType == PRLI_FCP_TYPE)
 745                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 746                         if (npr->prliType == PRLI_NVME_TYPE)
 747                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 748                 }
 749                 if (npr->targetFunc) {
 750                         if (npr->prliType == PRLI_FCP_TYPE)
 751                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 752                         if (npr->prliType == PRLI_NVME_TYPE)
 753                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 754                         if (npr->writeXferRdyDis)
 755                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 756                 }
 757                 if (npr->Retry)
 758                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 759
 760                 /* If this driver is in nvme target mode, set the ndlp's fc4
 761                  * type to NVME provided the PRLI response claims NVME FC4
 762                  * type.  Target mode does not issue gft_id so doesn't get
 763                  * the fc4 type set until now.
 764                  */
 765                 if ((phba->nvmet_support) && (npr->prliType == PRLI_NVME_TYPE))
 766                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 767         }
 768         if (rport) {
 769                 /* We need to update the rport role values */
 770                 roles = FC_RPORT_ROLE_UNKNOWN;
 771                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 772                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 773                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 774                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 775
 776                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 777                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 778                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 779
 780                 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 781                         fc_remote_port_rolechg(rport, roles);
 782         }
 783 }
 784
 785 static uint32_t
 786 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 787 {
 788         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 789
 790         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 791                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 792                 return 0;
 793         }
 794
 795         if (!(vport->fc_flag & FC_PT2PT)) {
 796                 /* Check config parameter use-adisc or FCP-2 */
 797                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 798                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 799                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 800                         spin_lock_irq(shost->host_lock);
 801                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 802                         spin_unlock_irq(shost->host_lock);
 803                         return 1;
 804                 }
 805         }
 806         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 807         lpfc_unreg_rpi(vport, ndlp);
 808         return 0;
 809 }
 810
 811 /**
 812  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 813  * @phba : Pointer to lpfc_hba structure.
 814  * @vport: Pointer to lpfc_vport structure.
 815  * @rpi  : rpi to be release.
 816  *
 817  * This function will send a unreg_login mailbox command to the firmware
 818  * to release a rpi.
 819  **/
 820 void
 821 lpfc_release_rpi(struct lpfc_hba *phba,
 822                 struct lpfc_vport *vport,
 823                 uint16_t rpi)
 824 {
 825         LPFC_MBOXQ_t *pmb;
 826         int rc;
 827
 828         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 829                         GFP_KERNEL);
 830         if (!pmb)
 831                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 832                         "2796 mailbox memory allocation failed \n");
 833         else {
 834                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 835                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 836                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 837                 if (rc == MBX_NOT_FINISHED)
 838                         mempool_free(pmb, phba->mbox_mem_pool);
 839         }
 840 }
 841
 842 static uint32_t
 843 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 844                   void *arg, uint32_t evt)
 845 {
 846         struct lpfc_hba *phba;
 847         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 848         uint16_t rpi;
 849
 850         phba = vport->phba;
 851         /* Release the RPI if reglogin completing */
 852         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 853                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 854                 (!pmb->u.mb.mbxStatus)) {
 855                 rpi = pmb->u.mb.un.varWords[0];
 856                 lpfc_release_rpi(phba, vport, rpi);
 857         }
 858         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 859                          "0271 Illegal State Transition: node x%x "
 860                          "event x%x, state x%x Data: x%x x%x\n",
 861                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 862                          ndlp->nlp_flag);
 863         return ndlp->nlp_state;
 864 }
 865
 866 static uint32_t
 867 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 868                   void *arg, uint32_t evt)
 869 {
 870         /* This transition is only legal if we previously
 871          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 872          * working on the same NPortID, do nothing for this thread
 873          * to stop it.
 874          */
 875         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 876                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 877                          "0272 Illegal State Transition: node x%x "
 878                          "event x%x, state x%x Data: x%x x%x\n",
 879                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 880                          ndlp->nlp_flag);
 881         }
 882         return ndlp->nlp_state;
 883 }
 884
 885 /* Start of Discovery State Machine routines */
 886
 887 static uint32_t
 888 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 889                            void *arg, uint32_t evt)
 890 {
 891         struct lpfc_iocbq *cmdiocb;
 892
 893         cmdiocb = (struct lpfc_iocbq *) arg;
 894
 895         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 896                 return ndlp->nlp_state;
 897         }
 898         return NLP_STE_FREED_NODE;
 899 }
 900
 901 static uint32_t
 902 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 903                          void *arg, uint32_t evt)
 904 {
 905         lpfc_issue_els_logo(vport, ndlp, 0);
 906         return ndlp->nlp_state;
 907 }
 908
 909 static uint32_t
 910 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 911                           void *arg, uint32_t evt)
 912 {
 913         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 914         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 915
 916         spin_lock_irq(shost->host_lock);
 917         ndlp->nlp_flag |= NLP_LOGO_ACC;
 918         spin_unlock_irq(shost->host_lock);
 919         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 920
 921         return ndlp->nlp_state;
 922 }
 923
 924 static uint32_t
 925 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 926                            void *arg, uint32_t evt)
 927 {
 928         return NLP_STE_FREED_NODE;
 929 }
 930
 931 static uint32_t
 932 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 933                            void *arg, uint32_t evt)
 934 {
 935         return NLP_STE_FREED_NODE;
 936 }
 937
 938 static uint32_t
 939 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 940                         struct lpfc_nodelist *ndlp,
 941                            void *arg, uint32_t evt)
 942 {
 943         return ndlp->nlp_state;
 944 }
 945
 946 static uint32_t
 947 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 948                            void *arg, uint32_t evt)
 949 {
 950         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 951         struct lpfc_hba   *phba = vport->phba;
 952         struct lpfc_iocbq *cmdiocb = arg;
 953         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 954         uint32_t *lp = (uint32_t *) pcmd->virt;
 955         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 956         struct ls_rjt stat;
 957         int port_cmp;
 958
 959         memset(&stat, 0, sizeof (struct ls_rjt));
 960
 961         /* For a PLOGI, we only accept if our portname is less
 962          * than the remote portname.
 963          */
 964         phba->fc_stat.elsLogiCol++;
 965         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 966                           sizeof(struct lpfc_name));
 967
 968         if (port_cmp >= 0) {
 969                 /* Reject this request because the remote node will accept
 970                    ours */
 971                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 972                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 973                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 974                         NULL);
 975         } else {
 976                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 977                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 978                     (vport->num_disc_nodes)) {
 979                         spin_lock_irq(shost->host_lock);
 980                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 981                         spin_unlock_irq(shost->host_lock);
 982                         /* Check if there are more PLOGIs to be sent */
 983                         lpfc_more_plogi(vport);
 984                         if (vport->num_disc_nodes == 0) {
 985                                 spin_lock_irq(shost->host_lock);
 986                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 987                                 spin_unlock_irq(shost->host_lock);
 988                                 lpfc_can_disctmo(vport);
 989                                 lpfc_end_rscn(vport);
 990                         }
 991                 }
 992         } /* If our portname was less */
 993
 994         return ndlp->nlp_state;
 995 }
 996
 997 static uint32_t
 998 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 999                           void *arg, uint32_t evt)
1000 {
1001         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1002         struct ls_rjt     stat;
1003
1004         memset(&stat, 0, sizeof (struct ls_rjt));
1005         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1006         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1007         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1008         return ndlp->nlp_state;
1009 }
1010
1011 static uint32_t
1012 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1013                           void *arg, uint32_t evt)
1014 {
1015         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1016
1017                                 /* software abort outstanding PLOGI */
1018         lpfc_els_abort(vport->phba, ndlp);
1019
1020         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1021         return ndlp->nlp_state;
1022 }
1023
1024 static uint32_t
1025 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1026                          void *arg, uint32_t evt)
1027 {
1028         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1029         struct lpfc_hba   *phba = vport->phba;
1030         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1031
1032         /* software abort outstanding PLOGI */
1033         lpfc_els_abort(phba, ndlp);
1034
1035         if (evt == NLP_EVT_RCV_LOGO) {
1036                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1037         } else {
1038                 lpfc_issue_els_logo(vport, ndlp, 0);
1039         }
1040
1041         /* Put ndlp in npr state set plogi timer for 1 sec */
1042         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1043         spin_lock_irq(shost->host_lock);
1044         ndlp->nlp_flag |= NLP_DELAY_TMO;
1045         spin_unlock_irq(shost->host_lock);
1046         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1047         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1048         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1049
1050         return ndlp->nlp_state;
1051 }
1052
1053 static uint32_t
1054 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1055                             struct lpfc_nodelist *ndlp,
1056                             void *arg,
1057                             uint32_t evt)
1058 {
1059         struct lpfc_hba    *phba = vport->phba;
1060         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1061         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1062         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1063         uint32_t *lp;
1064         uint32_t vid, flag;
1065         IOCB_t *irsp;
1066         struct serv_parm *sp;
1067         uint32_t ed_tov;
1068         LPFC_MBOXQ_t *mbox;
1069         int rc;
1070
1071         cmdiocb = (struct lpfc_iocbq *) arg;
1072         rspiocb = cmdiocb->context_un.rsp_iocb;
1073
1074         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1075                 /* Recovery from PLOGI collision logic */
1076                 return ndlp->nlp_state;
1077         }
1078
1079         irsp = &rspiocb->iocb;
1080
1081         if (irsp->ulpStatus)
1082                 goto out;
1083
1084         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1085
1086         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1087         if (!prsp)
1088                 goto out;
1089
1090         lp = (uint32_t *) prsp->virt;
1091         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1092
1093         /* Some switches have FDMI servers returning 0 for WWN */
1094         if ((ndlp->nlp_DID != FDMI_DID) &&
1095                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1096                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1097                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1098                                  "0142 PLOGI RSP: Invalid WWN.\n");
1099                 goto out;
1100         }
1101         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1102                 goto out;
1103         /* PLOGI chkparm OK */
1104         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1105                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1106                          ndlp->nlp_DID, ndlp->nlp_state,
1107                          ndlp->nlp_flag, ndlp->nlp_rpi);
1108         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1109                 ndlp->nlp_fcp_info |= CLASS2;
1110         else
1111                 ndlp->nlp_fcp_info |= CLASS3;
1112
1113         ndlp->nlp_class_sup = 0;
1114         if (sp->cls1.classValid)
1115                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1116         if (sp->cls2.classValid)
1117                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1118         if (sp->cls3.classValid)
1119                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1120         if (sp->cls4.classValid)
1121                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1122         ndlp->nlp_maxframe =
1123                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1124
1125         if ((vport->fc_flag & FC_PT2PT) &&
1126             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1127                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1128                 if (sp->cmn.edtovResolution) {
1129                         /* E_D_TOV ticks are in nanoseconds */
1130                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1131                 }
1132
1133                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1134                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1135                     sp->cmn.valid_vendor_ver_level) {
1136                         vid = be32_to_cpu(sp->un.vv.vid);
1137                         flag = be32_to_cpu(sp->un.vv.flags);
1138                         if ((vid == LPFC_VV_EMLX_ID) &&
1139                             (flag & LPFC_VV_SUPPRESS_RSP))
1140                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1141                 }
1142
1143                 /*
1144                  * Use the larger EDTOV
1145                  * RATOV = 2 * EDTOV for pt-to-pt
1146                  */
1147                 if (ed_tov > phba->fc_edtov)
1148                         phba->fc_edtov = ed_tov;
1149                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1150
1151                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1152
1153                 /* Issue config_link / reg_vfi to account for updated TOV's */
1154                 if (phba->sli_rev == LPFC_SLI_REV4) {
1155                         lpfc_issue_reg_vfi(vport);
1156                 } else {
1157                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1158                         if (!mbox) {
1159                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1160                                                  "0133 PLOGI: no memory "
1161                                                  "for config_link "
1162                                                  "Data: x%x x%x x%x x%x\n",
1163                                                  ndlp->nlp_DID, ndlp->nlp_state,
1164                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1165                                 goto out;
1166                         }
1167
1168                         lpfc_config_link(phba, mbox);
1169
1170                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1171                         mbox->vport = vport;
1172                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1173                         if (rc == MBX_NOT_FINISHED) {
1174                                 mempool_free(mbox, phba->mbox_mem_pool);
1175                                 goto out;
1176                         }
1177                 }
1178         }
1179
1180         lpfc_unreg_rpi(vport, ndlp);
1181
1182         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1183         if (!mbox) {
1184                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1185                                  "0018 PLOGI: no memory for reg_login "
1186                                  "Data: x%x x%x x%x x%x\n",
1187                                  ndlp->nlp_DID, ndlp->nlp_state,
1188                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1189                 goto out;
1190         }
1191
1192         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1193                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1194                 switch (ndlp->nlp_DID) {
1195                 case NameServer_DID:
1196                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1197                         break;
1198                 case FDMI_DID:
1199                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1200                         break;
1201                 default:
1202                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1203                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1204                 }
1205                 mbox->context2 = lpfc_nlp_get(ndlp);
1206                 mbox->vport = vport;
1207                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1208                     != MBX_NOT_FINISHED) {
1209                         lpfc_nlp_set_state(vport, ndlp,
1210                                            NLP_STE_REG_LOGIN_ISSUE);
1211                         return ndlp->nlp_state;
1212                 }
1213                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1214                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1215                 /* decrement node reference count to the failed mbox
1216                  * command
1217                  */
1218                 lpfc_nlp_put(ndlp);
1219                 mp = (struct lpfc_dmabuf *) mbox->context1;
1220                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1221                 kfree(mp);
1222                 mempool_free(mbox, phba->mbox_mem_pool);
1223
1224                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1225                                  "0134 PLOGI: cannot issue reg_login "
1226                                  "Data: x%x x%x x%x x%x\n",
1227                                  ndlp->nlp_DID, ndlp->nlp_state,
1228                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1229         } else {
1230                 mempool_free(mbox, phba->mbox_mem_pool);
1231
1232                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1233                                  "0135 PLOGI: cannot format 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         }
1238
1239
1240 out:
1241         if (ndlp->nlp_DID == NameServer_DID) {
1242                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1243                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1244                                  "0261 Cannot Register NameServer login\n");
1245         }
1246
1247         /*
1248         ** In case the node reference counter does not go to zero, ensure that
1249         ** the stale state for the node is not processed.
1250         */
1251
1252         ndlp->nlp_prev_state = ndlp->nlp_state;
1253         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1254         spin_lock_irq(shost->host_lock);
1255         ndlp->nlp_flag |= NLP_DEFER_RM;
1256         spin_unlock_irq(shost->host_lock);
1257         return NLP_STE_FREED_NODE;
1258 }
1259
1260 static uint32_t
1261 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1262                            void *arg, uint32_t evt)
1263 {
1264         return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1269         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1270 {
1271         struct lpfc_hba *phba;
1272         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1273         MAILBOX_t *mb = &pmb->u.mb;
1274         uint16_t rpi;
1275
1276         phba = vport->phba;
1277         /* Release the RPI */
1278         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1279                 !mb->mbxStatus) {
1280                 rpi = pmb->u.mb.un.varWords[0];
1281                 lpfc_release_rpi(phba, vport, rpi);
1282         }
1283         return ndlp->nlp_state;
1284 }
1285
1286 static uint32_t
1287 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1288                            void *arg, uint32_t evt)
1289 {
1290         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1291
1292         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1293                 spin_lock_irq(shost->host_lock);
1294                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1295                 spin_unlock_irq(shost->host_lock);
1296                 return ndlp->nlp_state;
1297         } else {
1298                 /* software abort outstanding PLOGI */
1299                 lpfc_els_abort(vport->phba, ndlp);
1300
1301                 lpfc_drop_node(vport, ndlp);
1302                 return NLP_STE_FREED_NODE;
1303         }
1304 }
1305
1306 static uint32_t
1307 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1308                               struct lpfc_nodelist *ndlp,
1309                               void *arg,
1310                               uint32_t evt)
1311 {
1312         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1313         struct lpfc_hba  *phba = vport->phba;
1314
1315         /* Don't do anything that will mess up processing of the
1316          * previous RSCN.
1317          */
1318         if (vport->fc_flag & FC_RSCN_DEFERRED)
1319                 return ndlp->nlp_state;
1320
1321         /* software abort outstanding PLOGI */
1322         lpfc_els_abort(phba, ndlp);
1323
1324         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1325         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1326         spin_lock_irq(shost->host_lock);
1327         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1328         spin_unlock_irq(shost->host_lock);
1329
1330         return ndlp->nlp_state;
1331 }
1332
1333 static uint32_t
1334 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1335                            void *arg, uint32_t evt)
1336 {
1337         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1338         struct lpfc_hba   *phba = vport->phba;
1339         struct lpfc_iocbq *cmdiocb;
1340
1341         /* software abort outstanding ADISC */
1342         lpfc_els_abort(phba, ndlp);
1343
1344         cmdiocb = (struct lpfc_iocbq *) arg;
1345
1346         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1347                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1348                         spin_lock_irq(shost->host_lock);
1349                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1350                         spin_unlock_irq(shost->host_lock);
1351                         if (vport->num_disc_nodes)
1352                                 lpfc_more_adisc(vport);
1353                 }
1354                 return ndlp->nlp_state;
1355         }
1356         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1357         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1358         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1359
1360         return ndlp->nlp_state;
1361 }
1362
1363 static uint32_t
1364 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1365                           void *arg, uint32_t evt)
1366 {
1367         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1368
1369         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1370         return ndlp->nlp_state;
1371 }
1372
1373 static uint32_t
1374 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1375                           void *arg, uint32_t evt)
1376 {
1377         struct lpfc_hba *phba = vport->phba;
1378         struct lpfc_iocbq *cmdiocb;
1379
1380         cmdiocb = (struct lpfc_iocbq *) arg;
1381
1382         /* software abort outstanding ADISC */
1383         lpfc_els_abort(phba, ndlp);
1384
1385         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1386         return ndlp->nlp_state;
1387 }
1388
1389 static uint32_t
1390 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1391                             struct lpfc_nodelist *ndlp,
1392                             void *arg, uint32_t evt)
1393 {
1394         struct lpfc_iocbq *cmdiocb;
1395
1396         cmdiocb = (struct lpfc_iocbq *) arg;
1397
1398         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1399         return ndlp->nlp_state;
1400 }
1401
1402 static uint32_t
1403 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1404                           void *arg, uint32_t evt)
1405 {
1406         struct lpfc_iocbq *cmdiocb;
1407
1408         cmdiocb = (struct lpfc_iocbq *) arg;
1409
1410         /* Treat like rcv logo */
1411         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1412         return ndlp->nlp_state;
1413 }
1414
1415 static uint32_t
1416 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1417                             struct lpfc_nodelist *ndlp,
1418                             void *arg, uint32_t evt)
1419 {
1420         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1421         struct lpfc_hba   *phba = vport->phba;
1422         struct lpfc_iocbq *cmdiocb, *rspiocb;
1423         IOCB_t *irsp;
1424         ADISC *ap;
1425         int rc;
1426
1427         cmdiocb = (struct lpfc_iocbq *) arg;
1428         rspiocb = cmdiocb->context_un.rsp_iocb;
1429
1430         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1431         irsp = &rspiocb->iocb;
1432
1433         if ((irsp->ulpStatus) ||
1434             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1435                 /* 1 sec timeout */
1436                 mod_timer(&ndlp->nlp_delayfunc,
1437                           jiffies + msecs_to_jiffies(1000));
1438                 spin_lock_irq(shost->host_lock);
1439                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1440                 spin_unlock_irq(shost->host_lock);
1441                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1442
1443                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1444                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1445
1446                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1447                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1448                 lpfc_unreg_rpi(vport, ndlp);
1449                 return ndlp->nlp_state;
1450         }
1451
1452         if (phba->sli_rev == LPFC_SLI_REV4) {
1453                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1454                 if (rc) {
1455                         /* Stay in state and retry. */
1456                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1457                         return ndlp->nlp_state;
1458                 }
1459         }
1460
1461         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1462                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1463                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1464         } else {
1465                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1466                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1467         }
1468
1469         return ndlp->nlp_state;
1470 }
1471
1472 static uint32_t
1473 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1474                            void *arg, uint32_t evt)
1475 {
1476         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1477
1478         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1479                 spin_lock_irq(shost->host_lock);
1480                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1481                 spin_unlock_irq(shost->host_lock);
1482                 return ndlp->nlp_state;
1483         } else {
1484                 /* software abort outstanding ADISC */
1485                 lpfc_els_abort(vport->phba, ndlp);
1486
1487                 lpfc_drop_node(vport, ndlp);
1488                 return NLP_STE_FREED_NODE;
1489         }
1490 }
1491
1492 static uint32_t
1493 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1494                               struct lpfc_nodelist *ndlp,
1495                               void *arg,
1496                               uint32_t evt)
1497 {
1498         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1499         struct lpfc_hba  *phba = vport->phba;
1500
1501         /* Don't do anything that will mess up processing of the
1502          * previous RSCN.
1503          */
1504         if (vport->fc_flag & FC_RSCN_DEFERRED)
1505                 return ndlp->nlp_state;
1506
1507         /* software abort outstanding ADISC */
1508         lpfc_els_abort(phba, ndlp);
1509
1510         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1511         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1512         spin_lock_irq(shost->host_lock);
1513         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1514         spin_unlock_irq(shost->host_lock);
1515         lpfc_disc_set_adisc(vport, ndlp);
1516         return ndlp->nlp_state;
1517 }
1518
1519 static uint32_t
1520 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1521                               struct lpfc_nodelist *ndlp,
1522                               void *arg,
1523                               uint32_t evt)
1524 {
1525         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1526
1527         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1528         return ndlp->nlp_state;
1529 }
1530
1531 static uint32_t
1532 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1533                              struct lpfc_nodelist *ndlp,
1534                              void *arg,
1535                              uint32_t evt)
1536 {
1537         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1538         struct ls_rjt     stat;
1539
1540         if (vport->phba->nvmet_support) {
1541                 /* NVME Target mode.  Handle and respond to the PRLI and
1542                  * transition to UNMAPPED provided the RPI has completed
1543                  * registration.
1544                  */
1545                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1546                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1547                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1548                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1549                 } else {
1550                         /* RPI registration has not completed. Reject the PRLI
1551                          * to prevent an illegal state transition when the
1552                          * rpi registration does complete.
1553                          */
1554                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
1555                                          "6115 NVMET ndlp rpi %d state "
1556                                          "unknown, state x%x flags x%08x\n",
1557                                          ndlp->nlp_rpi, ndlp->nlp_state,
1558                                          ndlp->nlp_flag);
1559                         memset(&stat, 0, sizeof(struct ls_rjt));
1560                         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1561                         stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1562                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1563                                             ndlp, NULL);
1564                 }
1565         } else {
1566                 /* Initiator mode. */
1567                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1568         }
1569
1570         return ndlp->nlp_state;
1571 }
1572
1573 static uint32_t
1574 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1575                              struct lpfc_nodelist *ndlp,
1576                              void *arg,
1577                              uint32_t evt)
1578 {
1579         struct lpfc_hba   *phba = vport->phba;
1580         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1581         LPFC_MBOXQ_t      *mb;
1582         LPFC_MBOXQ_t      *nextmb;
1583         struct lpfc_dmabuf *mp;
1584
1585         cmdiocb = (struct lpfc_iocbq *) arg;
1586
1587         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1588         if ((mb = phba->sli.mbox_active)) {
1589                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1590                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1591                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1592                         lpfc_nlp_put(ndlp);
1593                         mb->context2 = NULL;
1594                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1595                 }
1596         }
1597
1598         spin_lock_irq(&phba->hbalock);
1599         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1600                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1601                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1602                         mp = (struct lpfc_dmabuf *) (mb->context1);
1603                         if (mp) {
1604                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1605                                 kfree(mp);
1606                         }
1607                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1608                         lpfc_nlp_put(ndlp);
1609                         list_del(&mb->list);
1610                         phba->sli.mboxq_cnt--;
1611                         mempool_free(mb, phba->mbox_mem_pool);
1612                 }
1613         }
1614         spin_unlock_irq(&phba->hbalock);
1615
1616         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1617         return ndlp->nlp_state;
1618 }
1619
1620 static uint32_t
1621 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1622                                struct lpfc_nodelist *ndlp,
1623                                void *arg,
1624                                uint32_t evt)
1625 {
1626         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1627
1628         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1629         return ndlp->nlp_state;
1630 }
1631
1632 static uint32_t
1633 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1634                              struct lpfc_nodelist *ndlp,
1635                              void *arg,
1636                              uint32_t evt)
1637 {
1638         struct lpfc_iocbq *cmdiocb;
1639
1640         cmdiocb = (struct lpfc_iocbq *) arg;
1641         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1642         return ndlp->nlp_state;
1643 }
1644
1645 static uint32_t
1646 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1647                                   struct lpfc_nodelist *ndlp,
1648                                   void *arg,
1649                                   uint32_t evt)
1650 {
1651         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1652         struct lpfc_hba *phba = vport->phba;
1653         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1654         MAILBOX_t *mb = &pmb->u.mb;
1655         uint32_t did  = mb->un.varWords[1];
1656         int rc = 0;
1657
1658         if (mb->mbxStatus) {
1659                 /* RegLogin failed */
1660                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1661                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1662                                  "x%x\n",
1663                                  did, mb->mbxStatus, vport->port_state,
1664                                  mb->un.varRegLogin.vpi,
1665                                  mb->un.varRegLogin.rpi);
1666                 /*
1667                  * If RegLogin failed due to lack of HBA resources do not
1668                  * retry discovery.
1669                  */
1670                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1671                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1672                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1673                         return ndlp->nlp_state;
1674                 }
1675
1676                 /* Put ndlp in npr state set plogi timer for 1 sec */
1677                 mod_timer(&ndlp->nlp_delayfunc,
1678                           jiffies + msecs_to_jiffies(1000 * 1));
1679                 spin_lock_irq(shost->host_lock);
1680                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1681                 spin_unlock_irq(shost->host_lock);
1682                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1683
1684                 lpfc_issue_els_logo(vport, ndlp, 0);
1685                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1686                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1687                 return ndlp->nlp_state;
1688         }
1689
1690         /* SLI4 ports have preallocated logical rpis. */
1691         if (phba->sli_rev < LPFC_SLI_REV4)
1692                 ndlp->nlp_rpi = mb->un.varWords[0];
1693
1694         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1695
1696         /* Only if we are not a fabric nport do we issue PRLI */
1697         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1698                          "3066 RegLogin Complete on x%x x%x x%x\n",
1699                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1700         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1701             (phba->nvmet_support == 0)) {
1702                 /* The driver supports FCP and NVME concurrently.  If the
1703                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1704                  * know what PRLI to send yet.  Figure that out now and
1705                  * call PRLI depending on the outcome.
1706                  */
1707                 if (vport->fc_flag & FC_PT2PT) {
1708                         /* If we are pt2pt, there is no Fabric to determine
1709                          * the FC4 type of the remote nport. So if NVME
1710                          * is configured try it.
1711                          */
1712                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1713                         if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1714                              (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1715                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1716                                 /* We need to update the localport also */
1717                                 lpfc_nvme_update_localport(vport);
1718                         }
1719
1720                 } else if (ndlp->nlp_fc4_type == 0) {
1721                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1722                                          0, ndlp->nlp_DID);
1723                         return ndlp->nlp_state;
1724                 }
1725
1726                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1727                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1728                 lpfc_issue_els_prli(vport, ndlp, 0);
1729         } else {
1730                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1731                         phba->targetport->port_id = vport->fc_myDID;
1732
1733                 /* Only Fabric ports should transition. NVME target
1734                  * must complete PRLI.
1735                  */
1736                 if (ndlp->nlp_type & NLP_FABRIC) {
1737                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1738                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1739                 }
1740         }
1741         return ndlp->nlp_state;
1742 }
1743
1744 static uint32_t
1745 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1746                               struct lpfc_nodelist *ndlp,
1747                               void *arg,
1748                               uint32_t evt)
1749 {
1750         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1751
1752         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1753                 spin_lock_irq(shost->host_lock);
1754                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1755                 spin_unlock_irq(shost->host_lock);
1756                 return ndlp->nlp_state;
1757         } else {
1758                 lpfc_drop_node(vport, ndlp);
1759                 return NLP_STE_FREED_NODE;
1760         }
1761 }
1762
1763 static uint32_t
1764 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1765                                  struct lpfc_nodelist *ndlp,
1766                                  void *arg,
1767                                  uint32_t evt)
1768 {
1769         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1770
1771         /* Don't do anything that will mess up processing of the
1772          * previous RSCN.
1773          */
1774         if (vport->fc_flag & FC_RSCN_DEFERRED)
1775                 return ndlp->nlp_state;
1776
1777         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1778         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1779         spin_lock_irq(shost->host_lock);
1780
1781         /* If we are a target we won't immediately transition into PRLI,
1782          * so if REG_LOGIN already completed we don't need to ignore it.
1783          */
1784         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1785             !vport->phba->nvmet_support)
1786                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1787
1788         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1789         spin_unlock_irq(shost->host_lock);
1790         lpfc_disc_set_adisc(vport, ndlp);
1791         return ndlp->nlp_state;
1792 }
1793
1794 static uint32_t
1795 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1796                           void *arg, uint32_t evt)
1797 {
1798         struct lpfc_iocbq *cmdiocb;
1799
1800         cmdiocb = (struct lpfc_iocbq *) arg;
1801
1802         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1803         return ndlp->nlp_state;
1804 }
1805
1806 static uint32_t
1807 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1808                          void *arg, uint32_t evt)
1809 {
1810         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1811
1812         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1813         return ndlp->nlp_state;
1814 }
1815
1816 static uint32_t
1817 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1818                          void *arg, uint32_t evt)
1819 {
1820         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1821
1822         /* Software abort outstanding PRLI before sending acc */
1823         lpfc_els_abort(vport->phba, ndlp);
1824
1825         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1826         return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831                            void *arg, uint32_t evt)
1832 {
1833         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1834
1835         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1836         return ndlp->nlp_state;
1837 }
1838
1839 /* This routine is envoked when we rcv a PRLO request from a nport
1840  * we are logged into.  We should send back a PRLO rsp setting the
1841  * appropriate bits.
1842  * NEXT STATE = PRLI_ISSUE
1843  */
1844 static uint32_t
1845 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1846                          void *arg, uint32_t evt)
1847 {
1848         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1849
1850         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1851         return ndlp->nlp_state;
1852 }
1853
1854 static uint32_t
1855 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1856                           void *arg, uint32_t evt)
1857 {
1858         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1859         struct lpfc_iocbq *cmdiocb, *rspiocb;
1860         struct lpfc_hba   *phba = vport->phba;
1861         IOCB_t *irsp;
1862         PRLI *npr;
1863         struct lpfc_nvme_prli *nvpr;
1864         void *temp_ptr;
1865
1866         cmdiocb = (struct lpfc_iocbq *) arg;
1867         rspiocb = cmdiocb->context_un.rsp_iocb;
1868
1869         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
1870          * format is different so NULL the two PRLI types so that the
1871          * driver correctly gets the correct context.
1872          */
1873         npr = NULL;
1874         nvpr = NULL;
1875         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1876         if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1877                 npr = (PRLI *) temp_ptr;
1878         else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1879                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1880
1881         irsp = &rspiocb->iocb;
1882         if (irsp->ulpStatus) {
1883                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1884                     vport->cfg_restrict_login) {
1885                         goto out;
1886                 }
1887
1888                 /* The LS Req had some error.  Don't let this be a
1889                  * target.
1890                  */
1891                 if ((ndlp->fc4_prli_sent == 1) &&
1892                     (ndlp->nlp_state == NLP_STE_PRLI_ISSUE) &&
1893                     (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_FCP_INITIATOR)))
1894                         /* The FCP PRLI completed successfully but
1895                          * the NVME PRLI failed.  Since they are sent in
1896                          * succession, allow the FCP to complete.
1897                          */
1898                         goto out_err;
1899
1900                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1901                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1902                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1903                 return ndlp->nlp_state;
1904         }
1905
1906         /* Check out PRLI rsp */
1907         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1908         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1909
1910         /* NVME or FCP first burst must be negotiated for each PRLI. */
1911         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1912         ndlp->nvme_fb_size = 0;
1913         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1914             (npr->prliType == PRLI_FCP_TYPE)) {
1915                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1916                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1917                                  npr->initiatorFunc,
1918                                  npr->targetFunc);
1919                 if (npr->initiatorFunc)
1920                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1921                 if (npr->targetFunc) {
1922                         ndlp->nlp_type |= NLP_FCP_TARGET;
1923                         if (npr->writeXferRdyDis)
1924                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1925                 }
1926                 if (npr->Retry)
1927                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1928
1929                 /* PRLI completed.  Decrement count. */
1930                 ndlp->fc4_prli_sent--;
1931         } else if (nvpr &&
1932                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
1933                     PRLI_REQ_EXECUTED) &&
1934                    (bf_get_be32(prli_type_code, nvpr) ==
1935                     PRLI_NVME_TYPE)) {
1936
1937                 /* Complete setting up the remote ndlp personality. */
1938                 if (bf_get_be32(prli_init, nvpr))
1939                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
1940
1941                 /* Target driver cannot solicit NVME FB. */
1942                 if (bf_get_be32(prli_tgt, nvpr)) {
1943                         ndlp->nlp_type |= NLP_NVME_TARGET;
1944                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
1945                             (bf_get_be32(prli_fb_sz, nvpr) > 0) &&
1946                             (phba->cfg_nvme_enable_fb) &&
1947                             (!phba->nvmet_support)) {
1948                                 /* Both sides support FB. The target's first
1949                                  * burst size is a 512 byte encoded value.
1950                                  */
1951                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1952                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
1953                                                                  nvpr);
1954                         }
1955                 }
1956
1957                 if (bf_get_be32(prli_recov, nvpr))
1958                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1959
1960                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1961                                  "6029 NVME PRLI Cmpl w1 x%08x "
1962                                  "w4 x%08x w5 x%08x flag x%x, "
1963                                  "fcp_info x%x nlp_type x%x\n",
1964                                  be32_to_cpu(nvpr->word1),
1965                                  be32_to_cpu(nvpr->word4),
1966                                  be32_to_cpu(nvpr->word5),
1967                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
1968                                  ndlp->nlp_type);
1969                 /* PRLI completed.  Decrement count. */
1970                 ndlp->fc4_prli_sent--;
1971         }
1972         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1973             (vport->port_type == LPFC_NPIV_PORT) &&
1974              vport->cfg_restrict_login) {
1975 out:
1976                 spin_lock_irq(shost->host_lock);
1977                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1978                 spin_unlock_irq(shost->host_lock);
1979                 lpfc_issue_els_logo(vport, ndlp, 0);
1980
1981                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1982                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1983                 return ndlp->nlp_state;
1984         }
1985
1986 out_err:
1987         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
1988          * are complete.
1989          */
1990         if (ndlp->fc4_prli_sent == 0) {
1991                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1992                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
1993                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1994                 else
1995                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1996         } else
1997                 lpfc_printf_vlog(vport,
1998                                  KERN_INFO, LOG_ELS,
1999                                  "3067 PRLI's still outstanding "
2000                                  "on x%06x - count %d, Pend Node Mode "
2001                                  "transition...\n",
2002                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2003
2004         return ndlp->nlp_state;
2005 }
2006
2007 /*! lpfc_device_rm_prli_issue
2008  *
2009  * \pre
2010  * \post
2011  * \param   phba
2012  * \param   ndlp
2013  * \param   arg
2014  * \param   evt
2015  * \return  uint32_t
2016  *
2017  * \b Description:
2018  *    This routine is envoked when we a request to remove a nport we are in the
2019  *    process of PRLIing. We should software abort outstanding prli, unreg
2020  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2021  *    on plogi list so it can be freed when LOGO completes.
2022  *
2023  */
2024
2025 static uint32_t
2026 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2027                           void *arg, uint32_t evt)
2028 {
2029         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2030
2031         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2032                 spin_lock_irq(shost->host_lock);
2033                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2034                 spin_unlock_irq(shost->host_lock);
2035                 return ndlp->nlp_state;
2036         } else {
2037                 /* software abort outstanding PLOGI */
2038                 lpfc_els_abort(vport->phba, ndlp);
2039
2040                 lpfc_drop_node(vport, ndlp);
2041                 return NLP_STE_FREED_NODE;
2042         }
2043 }
2044
2045
2046 /*! lpfc_device_recov_prli_issue
2047  *
2048  * \pre
2049  * \post
2050  * \param   phba
2051  * \param   ndlp
2052  * \param   arg
2053  * \param   evt
2054  * \return  uint32_t
2055  *
2056  * \b Description:
2057  *    The routine is envoked when the state of a device is unknown, like
2058  *    during a link down. We should remove the nodelist entry from the
2059  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2060  *    outstanding PRLI command, then free the node entry.
2061  */
2062 static uint32_t
2063 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2064                              struct lpfc_nodelist *ndlp,
2065                              void *arg,
2066                              uint32_t evt)
2067 {
2068         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2069         struct lpfc_hba  *phba = vport->phba;
2070
2071         /* Don't do anything that will mess up processing of the
2072          * previous RSCN.
2073          */
2074         if (vport->fc_flag & FC_RSCN_DEFERRED)
2075                 return ndlp->nlp_state;
2076
2077         /* software abort outstanding PRLI */
2078         lpfc_els_abort(phba, ndlp);
2079
2080         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2081         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2082         spin_lock_irq(shost->host_lock);
2083         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2084         spin_unlock_irq(shost->host_lock);
2085         lpfc_disc_set_adisc(vport, ndlp);
2086         return ndlp->nlp_state;
2087 }
2088
2089 static uint32_t
2090 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2091                           void *arg, uint32_t evt)
2092 {
2093         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2094         struct ls_rjt     stat;
2095
2096         memset(&stat, 0, sizeof(struct ls_rjt));
2097         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2098         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2099         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2100         return ndlp->nlp_state;
2101 }
2102
2103 static uint32_t
2104 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2105                          void *arg, uint32_t evt)
2106 {
2107         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2108         struct ls_rjt     stat;
2109
2110         memset(&stat, 0, sizeof(struct ls_rjt));
2111         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2112         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2113         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2114         return ndlp->nlp_state;
2115 }
2116
2117 static uint32_t
2118 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2119                          void *arg, uint32_t evt)
2120 {
2121         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2122         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2123
2124         spin_lock_irq(shost->host_lock);
2125         ndlp->nlp_flag |= NLP_LOGO_ACC;
2126         spin_unlock_irq(shost->host_lock);
2127         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2128         return ndlp->nlp_state;
2129 }
2130
2131 static uint32_t
2132 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2133                            void *arg, uint32_t evt)
2134 {
2135         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2136         struct ls_rjt     stat;
2137
2138         memset(&stat, 0, sizeof(struct ls_rjt));
2139         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2140         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2141         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2142         return ndlp->nlp_state;
2143 }
2144
2145 static uint32_t
2146 lpfc_rcv_prlo_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_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2161                           void *arg, uint32_t evt)
2162 {
2163         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2164
2165         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2166         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2167         spin_lock_irq(shost->host_lock);
2168         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2169         spin_unlock_irq(shost->host_lock);
2170         lpfc_disc_set_adisc(vport, ndlp);
2171         return ndlp->nlp_state;
2172 }
2173
2174 static uint32_t
2175 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2176                           void *arg, uint32_t evt)
2177 {
2178         /*
2179          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
2180          * timed out and is calling for Device Remove.  In this case, the LOGO
2181          * must be allowed to complete in state LOGO_ISSUE so that the rpi
2182          * and other NLP flags are correctly cleaned up.
2183          */
2184         return ndlp->nlp_state;
2185 }
2186
2187 static uint32_t
2188 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2189                              struct lpfc_nodelist *ndlp,
2190                              void *arg, uint32_t evt)
2191 {
2192         /*
2193          * Device Recovery events have no meaning for a node with a LOGO
2194          * outstanding.  The LOGO has to complete first and handle the
2195          * node from that point.
2196          */
2197         return ndlp->nlp_state;
2198 }
2199
2200 static uint32_t
2201 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2202                           void *arg, uint32_t evt)
2203 {
2204         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2205
2206         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2207         return ndlp->nlp_state;
2208 }
2209
2210 static uint32_t
2211 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2212                          void *arg, uint32_t evt)
2213 {
2214         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2215
2216         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2217         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2218         return ndlp->nlp_state;
2219 }
2220
2221 static uint32_t
2222 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2223                          void *arg, uint32_t evt)
2224 {
2225         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2226
2227         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2228         return ndlp->nlp_state;
2229 }
2230
2231 static uint32_t
2232 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2233                            void *arg, uint32_t evt)
2234 {
2235         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2236
2237         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2238         return ndlp->nlp_state;
2239 }
2240
2241 static uint32_t
2242 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2243                          void *arg, uint32_t evt)
2244 {
2245         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2246
2247         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2248         return ndlp->nlp_state;
2249 }
2250
2251 static uint32_t
2252 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2253                              struct lpfc_nodelist *ndlp,
2254                              void *arg,
2255                              uint32_t evt)
2256 {
2257         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2258
2259         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2260         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2261         spin_lock_irq(shost->host_lock);
2262         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2263         spin_unlock_irq(shost->host_lock);
2264         lpfc_disc_set_adisc(vport, ndlp);
2265
2266         return ndlp->nlp_state;
2267 }
2268
2269 static uint32_t
2270 lpfc_rcv_plogi_mapped_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         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2276         return ndlp->nlp_state;
2277 }
2278
2279 static uint32_t
2280 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2281                           void *arg, uint32_t evt)
2282 {
2283         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2284
2285         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2286         return ndlp->nlp_state;
2287 }
2288
2289 static uint32_t
2290 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2291                           void *arg, uint32_t evt)
2292 {
2293         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2294
2295         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2296         return ndlp->nlp_state;
2297 }
2298
2299 static uint32_t
2300 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2301                             struct lpfc_nodelist *ndlp,
2302                             void *arg, uint32_t evt)
2303 {
2304         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2305
2306         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2307         return ndlp->nlp_state;
2308 }
2309
2310 static uint32_t
2311 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2312                           void *arg, uint32_t evt)
2313 {
2314         struct lpfc_hba  *phba = vport->phba;
2315         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2316
2317         /* flush the target */
2318         lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2319                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2320
2321         /* Treat like rcv logo */
2322         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2323         return ndlp->nlp_state;
2324 }
2325
2326 static uint32_t
2327 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2328                               struct lpfc_nodelist *ndlp,
2329                               void *arg,
2330                               uint32_t evt)
2331 {
2332         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2333
2334         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2335         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2336         spin_lock_irq(shost->host_lock);
2337         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2338         spin_unlock_irq(shost->host_lock);
2339         lpfc_disc_set_adisc(vport, ndlp);
2340         return ndlp->nlp_state;
2341 }
2342
2343 static uint32_t
2344 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2345                         void *arg, uint32_t evt)
2346 {
2347         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2348         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2349
2350         /* Ignore PLOGI if we have an outstanding LOGO */
2351         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2352                 return ndlp->nlp_state;
2353         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2354                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2355                 spin_lock_irq(shost->host_lock);
2356                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2357                 spin_unlock_irq(shost->host_lock);
2358         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2359                 /* send PLOGI immediately, move to PLOGI issue state */
2360                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2361                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2362                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2363                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2364                 }
2365         }
2366         return ndlp->nlp_state;
2367 }
2368
2369 static uint32_t
2370 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2371                        void *arg, uint32_t evt)
2372 {
2373         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2374         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2375         struct ls_rjt     stat;
2376
2377         memset(&stat, 0, sizeof (struct ls_rjt));
2378         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2379         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2380         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2381
2382         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2383                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2384                         spin_lock_irq(shost->host_lock);
2385                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2386                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2387                         spin_unlock_irq(shost->host_lock);
2388                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2389                         lpfc_issue_els_adisc(vport, ndlp, 0);
2390                 } else {
2391                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2392                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2393                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2394                 }
2395         }
2396         return ndlp->nlp_state;
2397 }
2398
2399 static uint32_t
2400 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2401                        void *arg, uint32_t evt)
2402 {
2403         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2404
2405         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2406         return ndlp->nlp_state;
2407 }
2408
2409 static uint32_t
2410 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2411                          void *arg, uint32_t evt)
2412 {
2413         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2414
2415         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2416         /*
2417          * Do not start discovery if discovery is about to start
2418          * or discovery in progress for this node. Starting discovery
2419          * here will affect the counting of discovery threads.
2420          */
2421         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2422             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2423                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2424                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2425                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2426                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2427                         lpfc_issue_els_adisc(vport, ndlp, 0);
2428                 } else {
2429                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2430                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2431                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2432                 }
2433         }
2434         return ndlp->nlp_state;
2435 }
2436
2437 static uint32_t
2438 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2439                        void *arg, uint32_t evt)
2440 {
2441         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2442         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2443
2444         spin_lock_irq(shost->host_lock);
2445         ndlp->nlp_flag |= NLP_LOGO_ACC;
2446         spin_unlock_irq(shost->host_lock);
2447
2448         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2449
2450         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2451                 mod_timer(&ndlp->nlp_delayfunc,
2452                           jiffies + msecs_to_jiffies(1000 * 1));
2453                 spin_lock_irq(shost->host_lock);
2454                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2455                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2456                 spin_unlock_irq(shost->host_lock);
2457                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2458         } else {
2459                 spin_lock_irq(shost->host_lock);
2460                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2461                 spin_unlock_irq(shost->host_lock);
2462         }
2463         return ndlp->nlp_state;
2464 }
2465
2466 static uint32_t
2467 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2468                          void *arg, uint32_t evt)
2469 {
2470         struct lpfc_iocbq *cmdiocb, *rspiocb;
2471         IOCB_t *irsp;
2472         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2473
2474         cmdiocb = (struct lpfc_iocbq *) arg;
2475         rspiocb = cmdiocb->context_un.rsp_iocb;
2476
2477         irsp = &rspiocb->iocb;
2478         if (irsp->ulpStatus) {
2479                 spin_lock_irq(shost->host_lock);
2480                 ndlp->nlp_flag |= NLP_DEFER_RM;
2481                 spin_unlock_irq(shost->host_lock);
2482                 return NLP_STE_FREED_NODE;
2483         }
2484         return ndlp->nlp_state;
2485 }
2486
2487 static uint32_t
2488 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2489                         void *arg, uint32_t evt)
2490 {
2491         struct lpfc_iocbq *cmdiocb, *rspiocb;
2492         IOCB_t *irsp;
2493
2494         cmdiocb = (struct lpfc_iocbq *) arg;
2495         rspiocb = cmdiocb->context_un.rsp_iocb;
2496
2497         irsp = &rspiocb->iocb;
2498         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2499                 lpfc_drop_node(vport, ndlp);
2500                 return NLP_STE_FREED_NODE;
2501         }
2502         return ndlp->nlp_state;
2503 }
2504
2505 static uint32_t
2506 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2507                         void *arg, uint32_t evt)
2508 {
2509         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2510
2511         /* For the fabric port just clear the fc flags. */
2512         if (ndlp->nlp_DID == Fabric_DID) {
2513                 spin_lock_irq(shost->host_lock);
2514                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2515                 spin_unlock_irq(shost->host_lock);
2516         }
2517         lpfc_unreg_rpi(vport, ndlp);
2518         return ndlp->nlp_state;
2519 }
2520
2521 static uint32_t
2522 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2523                          void *arg, uint32_t evt)
2524 {
2525         struct lpfc_iocbq *cmdiocb, *rspiocb;
2526         IOCB_t *irsp;
2527
2528         cmdiocb = (struct lpfc_iocbq *) arg;
2529         rspiocb = cmdiocb->context_un.rsp_iocb;
2530
2531         irsp = &rspiocb->iocb;
2532         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2533                 lpfc_drop_node(vport, ndlp);
2534                 return NLP_STE_FREED_NODE;
2535         }
2536         return ndlp->nlp_state;
2537 }
2538
2539 static uint32_t
2540 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2541                             struct lpfc_nodelist *ndlp,
2542                             void *arg, uint32_t evt)
2543 {
2544         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2545         MAILBOX_t    *mb = &pmb->u.mb;
2546
2547         if (!mb->mbxStatus) {
2548                 /* SLI4 ports have preallocated logical rpis. */
2549                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2550                         ndlp->nlp_rpi = mb->un.varWords[0];
2551                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2552                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2553                         lpfc_unreg_rpi(vport, ndlp);
2554                 }
2555         } else {
2556                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2557                         lpfc_drop_node(vport, ndlp);
2558                         return NLP_STE_FREED_NODE;
2559                 }
2560         }
2561         return ndlp->nlp_state;
2562 }
2563
2564 static uint32_t
2565 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2566                         void *arg, uint32_t evt)
2567 {
2568         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2569
2570         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2571                 spin_lock_irq(shost->host_lock);
2572                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2573                 spin_unlock_irq(shost->host_lock);
2574                 return ndlp->nlp_state;
2575         }
2576         lpfc_drop_node(vport, ndlp);
2577         return NLP_STE_FREED_NODE;
2578 }
2579
2580 static uint32_t
2581 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2582                            void *arg, uint32_t evt)
2583 {
2584         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2585
2586         /* Don't do anything that will mess up processing of the
2587          * previous RSCN.
2588          */
2589         if (vport->fc_flag & FC_RSCN_DEFERRED)
2590                 return ndlp->nlp_state;
2591
2592         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2593         spin_lock_irq(shost->host_lock);
2594         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2595         spin_unlock_irq(shost->host_lock);
2596         return ndlp->nlp_state;
2597 }
2598
2599
2600 /* This next section defines the NPort Discovery State Machine */
2601
2602 /* There are 4 different double linked lists nodelist entries can reside on.
2603  * The plogi list and adisc list are used when Link Up discovery or RSCN
2604  * processing is needed. Each list holds the nodes that we will send PLOGI
2605  * or ADISC on. These lists will keep track of what nodes will be effected
2606  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2607  * The unmapped_list will contain all nodes that we have successfully logged
2608  * into at the Fibre Channel level. The mapped_list will contain all nodes
2609  * that are mapped FCP targets.
2610  */
2611 /*
2612  * The bind list is a list of undiscovered (potentially non-existent) nodes
2613  * that we have saved binding information on. This information is used when
2614  * nodes transition from the unmapped to the mapped list.
2615  */
2616 /* For UNUSED_NODE state, the node has just been allocated .
2617  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2618  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2619  * and put on the unmapped list. For ADISC processing, the node is taken off
2620  * the ADISC list and placed on either the mapped or unmapped list (depending
2621  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2622  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2623  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2624  * node, the node is taken off the unmapped list. The binding list is checked
2625  * for a valid binding, or a binding is automatically assigned. If binding
2626  * assignment is unsuccessful, the node is left on the unmapped list. If
2627  * binding assignment is successful, the associated binding list entry (if
2628  * any) is removed, and the node is placed on the mapped list.
2629  */
2630 /*
2631  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2632  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2633  * expire, all effected nodes will receive a DEVICE_RM event.
2634  */
2635 /*
2636  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2637  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2638  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2639  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2640  * we will first process the ADISC list.  32 entries are processed initially and
2641  * ADISC is initited for each one.  Completions / Events for each node are
2642  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2643  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2644  * waiting, and the ADISC list count is identically 0, then we are done. For
2645  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2646  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2647  * list.  32 entries are processed initially and PLOGI is initited for each one.
2648  * Completions / Events for each node are funnelled thru the state machine.  As
2649  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2650  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2651  * indentically 0, then we are done. We have now completed discovery / RSCN
2652  * handling. Upon completion, ALL nodes should be on either the mapped or
2653  * unmapped lists.
2654  */
2655
2656 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2657      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2658         /* Action routine                  Event       Current State  */
2659         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2660         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2661         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2662         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2663         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2664         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2665         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2666         lpfc_disc_illegal,              /* CMPL_PRLI       */
2667         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2668         lpfc_disc_illegal,              /* CMPL_ADISC      */
2669         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2670         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2671         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2672
2673         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2674         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2675         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2676         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2677         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2678         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2679         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2680         lpfc_disc_illegal,              /* CMPL_PRLI       */
2681         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2682         lpfc_disc_illegal,              /* CMPL_ADISC      */
2683         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2684         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2685         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2686
2687         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2688         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2689         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2690         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2691         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2692         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2693         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2694         lpfc_disc_illegal,              /* CMPL_PRLI       */
2695         lpfc_disc_illegal,              /* CMPL_LOGO       */
2696         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2697         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2698         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2699         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2700
2701         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2702         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2703         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2704         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2705         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2706         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2707         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2708         lpfc_disc_illegal,              /* CMPL_PRLI       */
2709         lpfc_disc_illegal,              /* CMPL_LOGO       */
2710         lpfc_disc_illegal,              /* CMPL_ADISC      */
2711         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2712         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2713         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2714
2715         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2716         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2717         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2718         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2719         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2720         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2721         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2722         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2723         lpfc_disc_illegal,              /* CMPL_LOGO       */
2724         lpfc_disc_illegal,              /* CMPL_ADISC      */
2725         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2726         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2727         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2728
2729         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2730         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2731         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2732         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2733         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2734         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2735         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2736         lpfc_disc_illegal,              /* CMPL_PRLI       */
2737         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2738         lpfc_disc_illegal,              /* CMPL_ADISC      */
2739         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2740         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2741         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2742
2743         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2744         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2745         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2746         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2747         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2748         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2749         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2750         lpfc_disc_illegal,              /* CMPL_PRLI       */
2751         lpfc_disc_illegal,              /* CMPL_LOGO       */
2752         lpfc_disc_illegal,              /* CMPL_ADISC      */
2753         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2754         lpfc_disc_illegal,              /* DEVICE_RM       */
2755         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2756
2757         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2758         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2759         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2760         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2761         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2762         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2763         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2764         lpfc_disc_illegal,              /* CMPL_PRLI       */
2765         lpfc_disc_illegal,              /* CMPL_LOGO       */
2766         lpfc_disc_illegal,              /* CMPL_ADISC      */
2767         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2768         lpfc_disc_illegal,              /* DEVICE_RM       */
2769         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2770
2771         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2772         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2773         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2774         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2775         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2776         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2777         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2778         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2779         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2780         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2781         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2782         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2783         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2784 };
2785
2786 int
2787 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2788                         void *arg, uint32_t evt)
2789 {
2790         uint32_t cur_state, rc;
2791         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2792                          uint32_t);
2793         uint32_t got_ndlp = 0;
2794
2795         if (lpfc_nlp_get(ndlp))
2796                 got_ndlp = 1;
2797
2798         cur_state = ndlp->nlp_state;
2799
2800         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2801         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2802                          "0211 DSM in event x%x on NPort x%x in "
2803                          "state %d Data: x%x\n",
2804                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2805
2806         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2807                  "DSM in:          evt:%d ste:%d did:x%x",
2808                 evt, cur_state, ndlp->nlp_DID);
2809
2810         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2811         rc = (func) (vport, ndlp, arg, evt);
2812
2813         /* DSM out state <rc> on NPort <nlp_DID> */
2814         if (got_ndlp) {
2815                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2816                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2817                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2818
2819                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2820                         "DSM out:         ste:%d did:x%x flg:x%x",
2821                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2822                 /* Decrement the ndlp reference count held for this function */
2823                 lpfc_nlp_put(ndlp);
2824         } else {
2825                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2826                         "0213 DSM out state %d on NPort free\n", rc);
2827
2828                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2829                         "DSM out:         ste:%d did:x%x flg:x%x",
2830                         rc, 0, 0);
2831         }
2832
2833         return rc;
2834 }