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                 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
 365                  * For target mode, execute implicit logo.
 366                  * Fabric nodes go into NPR.
 367                  */
 368                 if (!(ndlp->nlp_type & NLP_FABRIC) &&
 369                     !(phba->nvmet_support)) {
 370                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 371                                          ndlp, NULL);
 372                         return 1;
 373                 }
 374                 if (nlp_portwwn != 0 &&
 375                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 376                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 377                                          "0143 PLOGI recv'd from DID: x%x "
 378                                          "WWPN changed: old %llx new %llx\n",
 379                                          ndlp->nlp_DID,
 380                                          (unsigned long long)nlp_portwwn,
 381                                          (unsigned long long)
 382                                          wwn_to_u64(sp->portName.u.wwn));
 383
 384                 ndlp->nlp_prev_state = ndlp->nlp_state;
 385                 /* rport needs to be unregistered first */
 386                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 387                 break;
 388         }
 389
 390         /* Check for Nport to NPort pt2pt protocol */
 391         if ((vport->fc_flag & FC_PT2PT) &&
 392             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 393                 /* rcv'ed PLOGI decides what our NPortId will be */
 394                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 395
 396                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 397                 if (sp->cmn.edtovResolution) {
 398                         /* E_D_TOV ticks are in nanoseconds */
 399                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 400                 }
 401
 402                 /*
 403                  * For pt-to-pt, use the larger EDTOV
 404                  * RATOV = 2 * EDTOV
 405                  */
 406                 if (ed_tov > phba->fc_edtov)
 407                         phba->fc_edtov = ed_tov;
 408                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 409
 410                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 411
 412                 /* Issue config_link / reg_vfi to account for updated TOV's */
 413
 414                 if (phba->sli_rev == LPFC_SLI_REV4)
 415                         lpfc_issue_reg_vfi(vport);
 416                 else {
 417                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 418                         if (mbox == NULL)
 419                                 goto out;
 420                         lpfc_config_link(phba, mbox);
 421                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 422                         mbox->vport = vport;
 423                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 424                         if (rc == MBX_NOT_FINISHED) {
 425                                 mempool_free(mbox, phba->mbox_mem_pool);
 426                                 goto out;
 427                         }
 428                 }
 429
 430                 lpfc_can_disctmo(vport);
 431         }
 432
 433         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
 434         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
 435             sp->cmn.valid_vendor_ver_level) {
 436                 vid = be32_to_cpu(sp->un.vv.vid);
 437                 flag = be32_to_cpu(sp->un.vv.flags);
 438                 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
 439                         ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
 440         }
 441
 442         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 443         if (!mbox)
 444                 goto out;
 445
 446         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 447         if (phba->sli_rev == LPFC_SLI_REV4)
 448                 lpfc_unreg_rpi(vport, ndlp);
 449
 450         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 451                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 452         if (rc) {
 453                 mempool_free(mbox, phba->mbox_mem_pool);
 454                 goto out;
 455         }
 456
 457         /* ACC PLOGI rsp command needs to execute first,
 458          * queue this mbox command to be processed later.
 459          */
 460         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 461         /*
 462          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 463          * command issued in lpfc_cmpl_els_acc().
 464          */
 465         mbox->vport = vport;
 466         spin_lock_irq(shost->host_lock);
 467         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 468         spin_unlock_irq(shost->host_lock);
 469
 470         /*
 471          * If there is an outstanding PLOGI issued, abort it before
 472          * sending ACC rsp for received PLOGI. If pending plogi
 473          * is not canceled here, the plogi will be rejected by
 474          * remote port and will be retried. On a configuration with
 475          * single discovery thread, this will cause a huge delay in
 476          * discovery. Also this will cause multiple state machines
 477          * running in parallel for this node.
 478          */
 479         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 480                 /* software abort outstanding PLOGI */
 481                 lpfc_els_abort(phba, ndlp);
 482         }
 483
 484         if ((vport->port_type == LPFC_NPIV_PORT &&
 485              vport->cfg_restrict_login)) {
 486
 487                 /* In order to preserve RPIs, we want to cleanup
 488                  * the default RPI the firmware created to rcv
 489                  * this ELS request. The only way to do this is
 490                  * to register, then unregister the RPI.
 491                  */
 492                 spin_lock_irq(shost->host_lock);
 493                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 494                 spin_unlock_irq(shost->host_lock);
 495                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 496                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 497                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 498                         ndlp, mbox);
 499                 if (rc)
 500                         mempool_free(mbox, phba->mbox_mem_pool);
 501                 return 1;
 502         }
 503         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 504         if (rc)
 505                 mempool_free(mbox, phba->mbox_mem_pool);
 506         return 1;
 507 out:
 508         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 509         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 510         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 511         return 0;
 512 }
 513
 514 /**
 515  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 516  * @phba: pointer to lpfc hba data structure.
 517  * @mboxq: pointer to mailbox object
 518  *
 519  * This routine is invoked to issue a completion to a rcv'ed
 520  * ADISC or PDISC after the paused RPI has been resumed.
 521  **/
 522 static void
 523 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 524 {
 525         struct lpfc_vport *vport;
 526         struct lpfc_iocbq *elsiocb;
 527         struct lpfc_nodelist *ndlp;
 528         uint32_t cmd;
 529
 530         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 531         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 532         vport = mboxq->vport;
 533         cmd = elsiocb->drvrTimeout;
 534
 535         if (cmd == ELS_CMD_ADISC) {
 536                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 537         } else {
 538                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 539                         ndlp, NULL);
 540         }
 541         kfree(elsiocb);
 542         mempool_free(mboxq, phba->mbox_mem_pool);
 543 }
 544
 545 static int
 546 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 547                 struct lpfc_iocbq *cmdiocb)
 548 {
 549         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 550         struct lpfc_iocbq  *elsiocb;
 551         struct lpfc_dmabuf *pcmd;
 552         struct serv_parm   *sp;
 553         struct lpfc_name   *pnn, *ppn;
 554         struct ls_rjt stat;
 555         ADISC *ap;
 556         IOCB_t *icmd;
 557         uint32_t *lp;
 558         uint32_t cmd;
 559
 560         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 561         lp = (uint32_t *) pcmd->virt;
 562
 563         cmd = *lp++;
 564         if (cmd == ELS_CMD_ADISC) {
 565                 ap = (ADISC *) lp;
 566                 pnn = (struct lpfc_name *) & ap->nodeName;
 567                 ppn = (struct lpfc_name *) & ap->portName;
 568         } else {
 569                 sp = (struct serv_parm *) lp;
 570                 pnn = (struct lpfc_name *) & sp->nodeName;
 571                 ppn = (struct lpfc_name *) & sp->portName;
 572         }
 573
 574         icmd = &cmdiocb->iocb;
 575         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 576
 577                 /*
 578                  * As soon as  we send ACC, the remote NPort can
 579                  * start sending us data. Thus, for SLI4 we must
 580                  * resume the RPI before the ACC goes out.
 581                  */
 582                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 583                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 584                                 GFP_KERNEL);
 585                         if (elsiocb) {
 586
 587                                 /* Save info from cmd IOCB used in rsp */
 588                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 589                                         sizeof(struct lpfc_iocbq));
 590
 591                                 /* Save the ELS cmd */
 592                                 elsiocb->drvrTimeout = cmd;
 593
 594                                 lpfc_sli4_resume_rpi(ndlp,
 595                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 596                                 goto out;
 597                         }
 598                 }
 599
 600                 if (cmd == ELS_CMD_ADISC) {
 601                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 602                 } else {
 603                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 604                                 ndlp, NULL);
 605                 }
 606 out:
 607                 /* If we are authenticated, move to the proper state */
 608                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 609                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 610                 else
 611                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 612
 613                 return 1;
 614         }
 615         /* Reject this request because invalid parameters */
 616         stat.un.b.lsRjtRsvd0 = 0;
 617         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 618         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 619         stat.un.b.vendorUnique = 0;
 620         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 621
 622         /* 1 sec timeout */
 623         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 624
 625         spin_lock_irq(shost->host_lock);
 626         ndlp->nlp_flag |= NLP_DELAY_TMO;
 627         spin_unlock_irq(shost->host_lock);
 628         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 629         ndlp->nlp_prev_state = ndlp->nlp_state;
 630         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 631         return 0;
 632 }
 633
 634 static int
 635 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 636               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 637 {
 638         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 639         struct lpfc_hba    *phba = vport->phba;
 640         struct lpfc_vport **vports;
 641         int i, active_vlink_present = 0 ;
 642
 643         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 644         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 645          * PLOGIs during LOGO storms from a device.
 646          */
 647         spin_lock_irq(shost->host_lock);
 648         ndlp->nlp_flag |= NLP_LOGO_ACC;
 649         spin_unlock_irq(shost->host_lock);
 650         if (els_cmd == ELS_CMD_PRLO)
 651                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 652         else
 653                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 654         if (ndlp->nlp_DID == Fabric_DID) {
 655                 if (vport->port_state <= LPFC_FDISC)
 656                         goto out;
 657                 lpfc_linkdown_port(vport);
 658                 spin_lock_irq(shost->host_lock);
 659                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 660                 spin_unlock_irq(shost->host_lock);
 661                 vports = lpfc_create_vport_work_array(phba);
 662                 if (vports) {
 663                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 664                                         i++) {
 665                                 if ((!(vports[i]->fc_flag &
 666                                         FC_VPORT_LOGO_RCVD)) &&
 667                                         (vports[i]->port_state > LPFC_FDISC)) {
 668                                         active_vlink_present = 1;
 669                                         break;
 670                                 }
 671                         }
 672                         lpfc_destroy_vport_work_array(phba, vports);
 673                 }
 674
 675                 /*
 676                  * Don't re-instantiate if vport is marked for deletion.
 677                  * If we are here first then vport_delete is going to wait
 678                  * for discovery to complete.
 679                  */
 680                 if (!(vport->load_flag & FC_UNLOADING) &&
 681                                         active_vlink_present) {
 682                         /*
 683                          * If there are other active VLinks present,
 684                          * re-instantiate the Vlink using FDISC.
 685                          */
 686                         mod_timer(&ndlp->nlp_delayfunc,
 687                                   jiffies + msecs_to_jiffies(1000));
 688                         spin_lock_irq(shost->host_lock);
 689                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 690                         spin_unlock_irq(shost->host_lock);
 691                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 692                         vport->port_state = LPFC_FDISC;
 693                 } else {
 694                         spin_lock_irq(shost->host_lock);
 695                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 696                         spin_unlock_irq(shost->host_lock);
 697                         lpfc_retry_pport_discovery(phba);
 698                 }
 699         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 700                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 701                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 702                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 703                 /* Only try to re-login if this is NOT a Fabric Node */
 704                 mod_timer(&ndlp->nlp_delayfunc,
 705                           jiffies + msecs_to_jiffies(1000 * 1));
 706                 spin_lock_irq(shost->host_lock);
 707                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 708                 spin_unlock_irq(shost->host_lock);
 709
 710                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 711         }
 712 out:
 713         ndlp->nlp_prev_state = ndlp->nlp_state;
 714         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 715
 716         spin_lock_irq(shost->host_lock);
 717         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 718         spin_unlock_irq(shost->host_lock);
 719         /* The driver has to wait until the ACC completes before it continues
 720          * processing the LOGO.  The action will resume in
 721          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 722          * unreg_login, the driver waits so the ACC does not get aborted.
 723          */
 724         return 0;
 725 }
 726
 727 static void
 728 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 729               struct lpfc_iocbq *cmdiocb)
 730 {
 731         struct lpfc_hba  *phba = vport->phba;
 732         struct lpfc_dmabuf *pcmd;
 733         uint32_t *lp;
 734         PRLI *npr;
 735         struct fc_rport *rport = ndlp->rport;
 736         u32 roles;
 737
 738         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 739         lp = (uint32_t *) pcmd->virt;
 740         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 741
 742         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 743         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 744         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 745         if ((npr->prliType == PRLI_FCP_TYPE) ||
 746             (npr->prliType == PRLI_NVME_TYPE)) {
 747                 if (npr->initiatorFunc) {
 748                         if (npr->prliType == PRLI_FCP_TYPE)
 749                                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
 750                         if (npr->prliType == PRLI_NVME_TYPE)
 751                                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
 752                 }
 753                 if (npr->targetFunc) {
 754                         if (npr->prliType == PRLI_FCP_TYPE)
 755                                 ndlp->nlp_type |= NLP_FCP_TARGET;
 756                         if (npr->prliType == PRLI_NVME_TYPE)
 757                                 ndlp->nlp_type |= NLP_NVME_TARGET;
 758                         if (npr->writeXferRdyDis)
 759                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 760                 }
 761                 if (npr->Retry)
 762                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 763
 764                 /* If this driver is in nvme target mode, set the ndlp's fc4
 765                  * type to NVME provided the PRLI response claims NVME FC4
 766                  * type.  Target mode does not issue gft_id so doesn't get
 767                  * the fc4 type set until now.
 768                  */
 769                 if ((phba->nvmet_support) && (npr->prliType == PRLI_NVME_TYPE))
 770                         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 771         }
 772         if (rport) {
 773                 /* We need to update the rport role values */
 774                 roles = FC_RPORT_ROLE_UNKNOWN;
 775                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 776                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 777                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 778                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 779
 780                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 781                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 782                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 783
 784                 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
 785                         fc_remote_port_rolechg(rport, roles);
 786         }
 787 }
 788
 789 static uint32_t
 790 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 791 {
 792         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 793
 794         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 795                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 796                 return 0;
 797         }
 798
 799         if (!(vport->fc_flag & FC_PT2PT)) {
 800                 /* Check config parameter use-adisc or FCP-2 */
 801                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 802                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 803                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 804                         spin_lock_irq(shost->host_lock);
 805                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 806                         spin_unlock_irq(shost->host_lock);
 807                         return 1;
 808                 }
 809         }
 810         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 811         lpfc_unreg_rpi(vport, ndlp);
 812         return 0;
 813 }
 814
 815 /**
 816  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 817  * @phba : Pointer to lpfc_hba structure.
 818  * @vport: Pointer to lpfc_vport structure.
 819  * @rpi  : rpi to be release.
 820  *
 821  * This function will send a unreg_login mailbox command to the firmware
 822  * to release a rpi.
 823  **/
 824 void
 825 lpfc_release_rpi(struct lpfc_hba *phba,
 826                 struct lpfc_vport *vport,
 827                 uint16_t rpi)
 828 {
 829         LPFC_MBOXQ_t *pmb;
 830         int rc;
 831
 832         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 833                         GFP_KERNEL);
 834         if (!pmb)
 835                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 836                         "2796 mailbox memory allocation failed \n");
 837         else {
 838                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 839                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 840                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 841                 if (rc == MBX_NOT_FINISHED)
 842                         mempool_free(pmb, phba->mbox_mem_pool);
 843         }
 844 }
 845
 846 static uint32_t
 847 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 848                   void *arg, uint32_t evt)
 849 {
 850         struct lpfc_hba *phba;
 851         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 852         uint16_t rpi;
 853
 854         phba = vport->phba;
 855         /* Release the RPI if reglogin completing */
 856         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 857                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 858                 (!pmb->u.mb.mbxStatus)) {
 859                 rpi = pmb->u.mb.un.varWords[0];
 860                 lpfc_release_rpi(phba, vport, rpi);
 861         }
 862         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 863                          "0271 Illegal State Transition: node x%x "
 864                          "event x%x, state x%x Data: x%x x%x\n",
 865                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 866                          ndlp->nlp_flag);
 867         return ndlp->nlp_state;
 868 }
 869
 870 static uint32_t
 871 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 872                   void *arg, uint32_t evt)
 873 {
 874         /* This transition is only legal if we previously
 875          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 876          * working on the same NPortID, do nothing for this thread
 877          * to stop it.
 878          */
 879         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 880                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 881                          "0272 Illegal State Transition: node x%x "
 882                          "event x%x, state x%x Data: x%x x%x\n",
 883                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 884                          ndlp->nlp_flag);
 885         }
 886         return ndlp->nlp_state;
 887 }
 888
 889 /* Start of Discovery State Machine routines */
 890
 891 static uint32_t
 892 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 893                            void *arg, uint32_t evt)
 894 {
 895         struct lpfc_iocbq *cmdiocb;
 896
 897         cmdiocb = (struct lpfc_iocbq *) arg;
 898
 899         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 900                 return ndlp->nlp_state;
 901         }
 902         return NLP_STE_FREED_NODE;
 903 }
 904
 905 static uint32_t
 906 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 907                          void *arg, uint32_t evt)
 908 {
 909         lpfc_issue_els_logo(vport, ndlp, 0);
 910         return ndlp->nlp_state;
 911 }
 912
 913 static uint32_t
 914 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 915                           void *arg, uint32_t evt)
 916 {
 917         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 918         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 919
 920         spin_lock_irq(shost->host_lock);
 921         ndlp->nlp_flag |= NLP_LOGO_ACC;
 922         spin_unlock_irq(shost->host_lock);
 923         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 924
 925         return ndlp->nlp_state;
 926 }
 927
 928 static uint32_t
 929 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 930                            void *arg, uint32_t evt)
 931 {
 932         return NLP_STE_FREED_NODE;
 933 }
 934
 935 static uint32_t
 936 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 937                            void *arg, uint32_t evt)
 938 {
 939         return NLP_STE_FREED_NODE;
 940 }
 941
 942 static uint32_t
 943 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 944                         struct lpfc_nodelist *ndlp,
 945                            void *arg, uint32_t evt)
 946 {
 947         return ndlp->nlp_state;
 948 }
 949
 950 static uint32_t
 951 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 952                            void *arg, uint32_t evt)
 953 {
 954         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 955         struct lpfc_hba   *phba = vport->phba;
 956         struct lpfc_iocbq *cmdiocb = arg;
 957         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 958         uint32_t *lp = (uint32_t *) pcmd->virt;
 959         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 960         struct ls_rjt stat;
 961         int port_cmp;
 962
 963         memset(&stat, 0, sizeof (struct ls_rjt));
 964
 965         /* For a PLOGI, we only accept if our portname is less
 966          * than the remote portname.
 967          */
 968         phba->fc_stat.elsLogiCol++;
 969         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 970                           sizeof(struct lpfc_name));
 971
 972         if (port_cmp >= 0) {
 973                 /* Reject this request because the remote node will accept
 974                    ours */
 975                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 976                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 977                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 978                         NULL);
 979         } else {
 980                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 981                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 982                     (vport->num_disc_nodes)) {
 983                         spin_lock_irq(shost->host_lock);
 984                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 985                         spin_unlock_irq(shost->host_lock);
 986                         /* Check if there are more PLOGIs to be sent */
 987                         lpfc_more_plogi(vport);
 988                         if (vport->num_disc_nodes == 0) {
 989                                 spin_lock_irq(shost->host_lock);
 990                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 991                                 spin_unlock_irq(shost->host_lock);
 992                                 lpfc_can_disctmo(vport);
 993                                 lpfc_end_rscn(vport);
 994                         }
 995                 }
 996         } /* If our portname was less */
 997
 998         return ndlp->nlp_state;
 999 }
1000
1001 static uint32_t
1002 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1003                           void *arg, uint32_t evt)
1004 {
1005         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1006         struct ls_rjt     stat;
1007
1008         memset(&stat, 0, sizeof (struct ls_rjt));
1009         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1010         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1011         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1012         return ndlp->nlp_state;
1013 }
1014
1015 static uint32_t
1016 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1017                           void *arg, uint32_t evt)
1018 {
1019         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1020
1021                                 /* software abort outstanding PLOGI */
1022         lpfc_els_abort(vport->phba, ndlp);
1023
1024         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1025         return ndlp->nlp_state;
1026 }
1027
1028 static uint32_t
1029 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1030                          void *arg, uint32_t evt)
1031 {
1032         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1033         struct lpfc_hba   *phba = vport->phba;
1034         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1035
1036         /* software abort outstanding PLOGI */
1037         lpfc_els_abort(phba, ndlp);
1038
1039         if (evt == NLP_EVT_RCV_LOGO) {
1040                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1041         } else {
1042                 lpfc_issue_els_logo(vport, ndlp, 0);
1043         }
1044
1045         /* Put ndlp in npr state set plogi timer for 1 sec */
1046         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1047         spin_lock_irq(shost->host_lock);
1048         ndlp->nlp_flag |= NLP_DELAY_TMO;
1049         spin_unlock_irq(shost->host_lock);
1050         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1051         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1052         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1053
1054         return ndlp->nlp_state;
1055 }
1056
1057 static uint32_t
1058 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1059                             struct lpfc_nodelist *ndlp,
1060                             void *arg,
1061                             uint32_t evt)
1062 {
1063         struct lpfc_hba    *phba = vport->phba;
1064         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1065         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1066         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1067         uint32_t *lp;
1068         uint32_t vid, flag;
1069         IOCB_t *irsp;
1070         struct serv_parm *sp;
1071         uint32_t ed_tov;
1072         LPFC_MBOXQ_t *mbox;
1073         int rc;
1074
1075         cmdiocb = (struct lpfc_iocbq *) arg;
1076         rspiocb = cmdiocb->context_un.rsp_iocb;
1077
1078         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1079                 /* Recovery from PLOGI collision logic */
1080                 return ndlp->nlp_state;
1081         }
1082
1083         irsp = &rspiocb->iocb;
1084
1085         if (irsp->ulpStatus)
1086                 goto out;
1087
1088         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1089
1090         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1091         if (!prsp)
1092                 goto out;
1093
1094         lp = (uint32_t *) prsp->virt;
1095         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1096
1097         /* Some switches have FDMI servers returning 0 for WWN */
1098         if ((ndlp->nlp_DID != FDMI_DID) &&
1099                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1100                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1101                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1102                                  "0142 PLOGI RSP: Invalid WWN.\n");
1103                 goto out;
1104         }
1105         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1106                 goto out;
1107         /* PLOGI chkparm OK */
1108         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1109                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1110                          ndlp->nlp_DID, ndlp->nlp_state,
1111                          ndlp->nlp_flag, ndlp->nlp_rpi);
1112         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1113                 ndlp->nlp_fcp_info |= CLASS2;
1114         else
1115                 ndlp->nlp_fcp_info |= CLASS3;
1116
1117         ndlp->nlp_class_sup = 0;
1118         if (sp->cls1.classValid)
1119                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1120         if (sp->cls2.classValid)
1121                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1122         if (sp->cls3.classValid)
1123                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1124         if (sp->cls4.classValid)
1125                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1126         ndlp->nlp_maxframe =
1127                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1128
1129         if ((vport->fc_flag & FC_PT2PT) &&
1130             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1131                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1132                 if (sp->cmn.edtovResolution) {
1133                         /* E_D_TOV ticks are in nanoseconds */
1134                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1135                 }
1136
1137                 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1138                 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1139                     sp->cmn.valid_vendor_ver_level) {
1140                         vid = be32_to_cpu(sp->un.vv.vid);
1141                         flag = be32_to_cpu(sp->un.vv.flags);
1142                         if ((vid == LPFC_VV_EMLX_ID) &&
1143                             (flag & LPFC_VV_SUPPRESS_RSP))
1144                                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1145                 }
1146
1147                 /*
1148                  * Use the larger EDTOV
1149                  * RATOV = 2 * EDTOV for pt-to-pt
1150                  */
1151                 if (ed_tov > phba->fc_edtov)
1152                         phba->fc_edtov = ed_tov;
1153                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1154
1155                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1156
1157                 /* Issue config_link / reg_vfi to account for updated TOV's */
1158                 if (phba->sli_rev == LPFC_SLI_REV4) {
1159                         lpfc_issue_reg_vfi(vport);
1160                 } else {
1161                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1162                         if (!mbox) {
1163                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1164                                                  "0133 PLOGI: no memory "
1165                                                  "for config_link "
1166                                                  "Data: x%x x%x x%x x%x\n",
1167                                                  ndlp->nlp_DID, ndlp->nlp_state,
1168                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1169                                 goto out;
1170                         }
1171
1172                         lpfc_config_link(phba, mbox);
1173
1174                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1175                         mbox->vport = vport;
1176                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1177                         if (rc == MBX_NOT_FINISHED) {
1178                                 mempool_free(mbox, phba->mbox_mem_pool);
1179                                 goto out;
1180                         }
1181                 }
1182         }
1183
1184         lpfc_unreg_rpi(vport, ndlp);
1185
1186         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1187         if (!mbox) {
1188                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1189                                  "0018 PLOGI: no memory for reg_login "
1190                                  "Data: x%x x%x x%x x%x\n",
1191                                  ndlp->nlp_DID, ndlp->nlp_state,
1192                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1193                 goto out;
1194         }
1195
1196         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1197                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1198                 switch (ndlp->nlp_DID) {
1199                 case NameServer_DID:
1200                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1201                         break;
1202                 case FDMI_DID:
1203                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1204                         break;
1205                 default:
1206                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1207                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1208                 }
1209                 mbox->context2 = lpfc_nlp_get(ndlp);
1210                 mbox->vport = vport;
1211                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1212                     != MBX_NOT_FINISHED) {
1213                         lpfc_nlp_set_state(vport, ndlp,
1214                                            NLP_STE_REG_LOGIN_ISSUE);
1215                         return ndlp->nlp_state;
1216                 }
1217                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1218                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1219                 /* decrement node reference count to the failed mbox
1220                  * command
1221                  */
1222                 lpfc_nlp_put(ndlp);
1223                 mp = (struct lpfc_dmabuf *) mbox->context1;
1224                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1225                 kfree(mp);
1226                 mempool_free(mbox, phba->mbox_mem_pool);
1227
1228                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1229                                  "0134 PLOGI: cannot issue reg_login "
1230                                  "Data: x%x x%x x%x x%x\n",
1231                                  ndlp->nlp_DID, ndlp->nlp_state,
1232                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1233         } else {
1234                 mempool_free(mbox, phba->mbox_mem_pool);
1235
1236                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1237                                  "0135 PLOGI: cannot format reg_login "
1238                                  "Data: x%x x%x x%x x%x\n",
1239                                  ndlp->nlp_DID, ndlp->nlp_state,
1240                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1241         }
1242
1243
1244 out:
1245         if (ndlp->nlp_DID == NameServer_DID) {
1246                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1247                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1248                                  "0261 Cannot Register NameServer login\n");
1249         }
1250
1251         /*
1252         ** In case the node reference counter does not go to zero, ensure that
1253         ** the stale state for the node is not processed.
1254         */
1255
1256         ndlp->nlp_prev_state = ndlp->nlp_state;
1257         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1258         spin_lock_irq(shost->host_lock);
1259         ndlp->nlp_flag |= NLP_DEFER_RM;
1260         spin_unlock_irq(shost->host_lock);
1261         return NLP_STE_FREED_NODE;
1262 }
1263
1264 static uint32_t
1265 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1266                            void *arg, uint32_t evt)
1267 {
1268         return ndlp->nlp_state;
1269 }
1270
1271 static uint32_t
1272 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1273         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1274 {
1275         struct lpfc_hba *phba;
1276         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1277         MAILBOX_t *mb = &pmb->u.mb;
1278         uint16_t rpi;
1279
1280         phba = vport->phba;
1281         /* Release the RPI */
1282         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1283                 !mb->mbxStatus) {
1284                 rpi = pmb->u.mb.un.varWords[0];
1285                 lpfc_release_rpi(phba, vport, rpi);
1286         }
1287         return ndlp->nlp_state;
1288 }
1289
1290 static uint32_t
1291 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1292                            void *arg, uint32_t evt)
1293 {
1294         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1295
1296         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1297                 spin_lock_irq(shost->host_lock);
1298                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1299                 spin_unlock_irq(shost->host_lock);
1300                 return ndlp->nlp_state;
1301         } else {
1302                 /* software abort outstanding PLOGI */
1303                 lpfc_els_abort(vport->phba, ndlp);
1304
1305                 lpfc_drop_node(vport, ndlp);
1306                 return NLP_STE_FREED_NODE;
1307         }
1308 }
1309
1310 static uint32_t
1311 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1312                               struct lpfc_nodelist *ndlp,
1313                               void *arg,
1314                               uint32_t evt)
1315 {
1316         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1317         struct lpfc_hba  *phba = vport->phba;
1318
1319         /* Don't do anything that will mess up processing of the
1320          * previous RSCN.
1321          */
1322         if (vport->fc_flag & FC_RSCN_DEFERRED)
1323                 return ndlp->nlp_state;
1324
1325         /* software abort outstanding PLOGI */
1326         lpfc_els_abort(phba, ndlp);
1327
1328         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1329         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1330         spin_lock_irq(shost->host_lock);
1331         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1332         spin_unlock_irq(shost->host_lock);
1333
1334         return ndlp->nlp_state;
1335 }
1336
1337 static uint32_t
1338 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1339                            void *arg, uint32_t evt)
1340 {
1341         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1342         struct lpfc_hba   *phba = vport->phba;
1343         struct lpfc_iocbq *cmdiocb;
1344
1345         /* software abort outstanding ADISC */
1346         lpfc_els_abort(phba, ndlp);
1347
1348         cmdiocb = (struct lpfc_iocbq *) arg;
1349
1350         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1351                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1352                         spin_lock_irq(shost->host_lock);
1353                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1354                         spin_unlock_irq(shost->host_lock);
1355                         if (vport->num_disc_nodes)
1356                                 lpfc_more_adisc(vport);
1357                 }
1358                 return ndlp->nlp_state;
1359         }
1360         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1361         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1362         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1363
1364         return ndlp->nlp_state;
1365 }
1366
1367 static uint32_t
1368 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1369                           void *arg, uint32_t evt)
1370 {
1371         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1372
1373         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1374         return ndlp->nlp_state;
1375 }
1376
1377 static uint32_t
1378 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1379                           void *arg, uint32_t evt)
1380 {
1381         struct lpfc_hba *phba = vport->phba;
1382         struct lpfc_iocbq *cmdiocb;
1383
1384         cmdiocb = (struct lpfc_iocbq *) arg;
1385
1386         /* software abort outstanding ADISC */
1387         lpfc_els_abort(phba, ndlp);
1388
1389         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1390         return ndlp->nlp_state;
1391 }
1392
1393 static uint32_t
1394 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1395                             struct lpfc_nodelist *ndlp,
1396                             void *arg, uint32_t evt)
1397 {
1398         struct lpfc_iocbq *cmdiocb;
1399
1400         cmdiocb = (struct lpfc_iocbq *) arg;
1401
1402         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1403         return ndlp->nlp_state;
1404 }
1405
1406 static uint32_t
1407 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1408                           void *arg, uint32_t evt)
1409 {
1410         struct lpfc_iocbq *cmdiocb;
1411
1412         cmdiocb = (struct lpfc_iocbq *) arg;
1413
1414         /* Treat like rcv logo */
1415         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1416         return ndlp->nlp_state;
1417 }
1418
1419 static uint32_t
1420 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1421                             struct lpfc_nodelist *ndlp,
1422                             void *arg, uint32_t evt)
1423 {
1424         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1425         struct lpfc_hba   *phba = vport->phba;
1426         struct lpfc_iocbq *cmdiocb, *rspiocb;
1427         IOCB_t *irsp;
1428         ADISC *ap;
1429         int rc;
1430
1431         cmdiocb = (struct lpfc_iocbq *) arg;
1432         rspiocb = cmdiocb->context_un.rsp_iocb;
1433
1434         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1435         irsp = &rspiocb->iocb;
1436
1437         if ((irsp->ulpStatus) ||
1438             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1439                 /* 1 sec timeout */
1440                 mod_timer(&ndlp->nlp_delayfunc,
1441                           jiffies + msecs_to_jiffies(1000));
1442                 spin_lock_irq(shost->host_lock);
1443                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1444                 spin_unlock_irq(shost->host_lock);
1445                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1446
1447                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1448                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1449
1450                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1451                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1452                 lpfc_unreg_rpi(vport, ndlp);
1453                 return ndlp->nlp_state;
1454         }
1455
1456         if (phba->sli_rev == LPFC_SLI_REV4) {
1457                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1458                 if (rc) {
1459                         /* Stay in state and retry. */
1460                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1461                         return ndlp->nlp_state;
1462                 }
1463         }
1464
1465         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1466                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1467                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1468         } else {
1469                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1470                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1471         }
1472
1473         return ndlp->nlp_state;
1474 }
1475
1476 static uint32_t
1477 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1478                            void *arg, uint32_t evt)
1479 {
1480         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1481
1482         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1483                 spin_lock_irq(shost->host_lock);
1484                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1485                 spin_unlock_irq(shost->host_lock);
1486                 return ndlp->nlp_state;
1487         } else {
1488                 /* software abort outstanding ADISC */
1489                 lpfc_els_abort(vport->phba, ndlp);
1490
1491                 lpfc_drop_node(vport, ndlp);
1492                 return NLP_STE_FREED_NODE;
1493         }
1494 }
1495
1496 static uint32_t
1497 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1498                               struct lpfc_nodelist *ndlp,
1499                               void *arg,
1500                               uint32_t evt)
1501 {
1502         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1503         struct lpfc_hba  *phba = vport->phba;
1504
1505         /* Don't do anything that will mess up processing of the
1506          * previous RSCN.
1507          */
1508         if (vport->fc_flag & FC_RSCN_DEFERRED)
1509                 return ndlp->nlp_state;
1510
1511         /* software abort outstanding ADISC */
1512         lpfc_els_abort(phba, ndlp);
1513
1514         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1515         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1516         spin_lock_irq(shost->host_lock);
1517         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1518         spin_unlock_irq(shost->host_lock);
1519         lpfc_disc_set_adisc(vport, ndlp);
1520         return ndlp->nlp_state;
1521 }
1522
1523 static uint32_t
1524 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1525                               struct lpfc_nodelist *ndlp,
1526                               void *arg,
1527                               uint32_t evt)
1528 {
1529         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1530
1531         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1532         return ndlp->nlp_state;
1533 }
1534
1535 static uint32_t
1536 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1537                              struct lpfc_nodelist *ndlp,
1538                              void *arg,
1539                              uint32_t evt)
1540 {
1541         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1542         struct ls_rjt     stat;
1543
1544         if (vport->phba->nvmet_support) {
1545                 /* NVME Target mode.  Handle and respond to the PRLI and
1546                  * transition to UNMAPPED provided the RPI has completed
1547                  * registration.
1548                  */
1549                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1550                         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1551                         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1552                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1553                 } else {
1554                         /* RPI registration has not completed. Reject the PRLI
1555                          * to prevent an illegal state transition when the
1556                          * rpi registration does complete.
1557                          */
1558                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
1559                                          "6115 NVMET ndlp rpi %d state "
1560                                          "unknown, state x%x flags x%08x\n",
1561                                          ndlp->nlp_rpi, ndlp->nlp_state,
1562                                          ndlp->nlp_flag);
1563                         memset(&stat, 0, sizeof(struct ls_rjt));
1564                         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1565                         stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1566                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1567                                             ndlp, NULL);
1568                 }
1569         } else {
1570                 /* Initiator mode. */
1571                 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1572         }
1573
1574         return ndlp->nlp_state;
1575 }
1576
1577 static uint32_t
1578 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1579                              struct lpfc_nodelist *ndlp,
1580                              void *arg,
1581                              uint32_t evt)
1582 {
1583         struct lpfc_hba   *phba = vport->phba;
1584         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1585         LPFC_MBOXQ_t      *mb;
1586         LPFC_MBOXQ_t      *nextmb;
1587         struct lpfc_dmabuf *mp;
1588
1589         cmdiocb = (struct lpfc_iocbq *) arg;
1590
1591         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1592         if ((mb = phba->sli.mbox_active)) {
1593                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1594                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1595                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1596                         lpfc_nlp_put(ndlp);
1597                         mb->context2 = NULL;
1598                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1599                 }
1600         }
1601
1602         spin_lock_irq(&phba->hbalock);
1603         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1604                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1605                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1606                         mp = (struct lpfc_dmabuf *) (mb->context1);
1607                         if (mp) {
1608                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1609                                 kfree(mp);
1610                         }
1611                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1612                         lpfc_nlp_put(ndlp);
1613                         list_del(&mb->list);
1614                         phba->sli.mboxq_cnt--;
1615                         mempool_free(mb, phba->mbox_mem_pool);
1616                 }
1617         }
1618         spin_unlock_irq(&phba->hbalock);
1619
1620         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1621         return ndlp->nlp_state;
1622 }
1623
1624 static uint32_t
1625 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1626                                struct lpfc_nodelist *ndlp,
1627                                void *arg,
1628                                uint32_t evt)
1629 {
1630         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1631
1632         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1633         return ndlp->nlp_state;
1634 }
1635
1636 static uint32_t
1637 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1638                              struct lpfc_nodelist *ndlp,
1639                              void *arg,
1640                              uint32_t evt)
1641 {
1642         struct lpfc_iocbq *cmdiocb;
1643
1644         cmdiocb = (struct lpfc_iocbq *) arg;
1645         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1646         return ndlp->nlp_state;
1647 }
1648
1649 static uint32_t
1650 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1651                                   struct lpfc_nodelist *ndlp,
1652                                   void *arg,
1653                                   uint32_t evt)
1654 {
1655         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1656         struct lpfc_hba *phba = vport->phba;
1657         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1658         MAILBOX_t *mb = &pmb->u.mb;
1659         uint32_t did  = mb->un.varWords[1];
1660         int rc = 0;
1661
1662         if (mb->mbxStatus) {
1663                 /* RegLogin failed */
1664                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1665                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1666                                  "x%x\n",
1667                                  did, mb->mbxStatus, vport->port_state,
1668                                  mb->un.varRegLogin.vpi,
1669                                  mb->un.varRegLogin.rpi);
1670                 /*
1671                  * If RegLogin failed due to lack of HBA resources do not
1672                  * retry discovery.
1673                  */
1674                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1675                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1676                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1677                         return ndlp->nlp_state;
1678                 }
1679
1680                 /* Put ndlp in npr state set plogi timer for 1 sec */
1681                 mod_timer(&ndlp->nlp_delayfunc,
1682                           jiffies + msecs_to_jiffies(1000 * 1));
1683                 spin_lock_irq(shost->host_lock);
1684                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1685                 spin_unlock_irq(shost->host_lock);
1686                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1687
1688                 lpfc_issue_els_logo(vport, ndlp, 0);
1689                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1690                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1691                 return ndlp->nlp_state;
1692         }
1693
1694         /* SLI4 ports have preallocated logical rpis. */
1695         if (phba->sli_rev < LPFC_SLI_REV4)
1696                 ndlp->nlp_rpi = mb->un.varWords[0];
1697
1698         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1699
1700         /* Only if we are not a fabric nport do we issue PRLI */
1701         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1702                          "3066 RegLogin Complete on x%x x%x x%x\n",
1703                          did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1704         if (!(ndlp->nlp_type & NLP_FABRIC) &&
1705             (phba->nvmet_support == 0)) {
1706                 /* The driver supports FCP and NVME concurrently.  If the
1707                  * ndlp's nlp_fc4_type is still zero, the driver doesn't
1708                  * know what PRLI to send yet.  Figure that out now and
1709                  * call PRLI depending on the outcome.
1710                  */
1711                 if (vport->fc_flag & FC_PT2PT) {
1712                         /* If we are pt2pt, there is no Fabric to determine
1713                          * the FC4 type of the remote nport. So if NVME
1714                          * is configured try it.
1715                          */
1716                         ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1717                         if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1718                              (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1719                                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1720                                 /* We need to update the localport also */
1721                                 lpfc_nvme_update_localport(vport);
1722                         }
1723
1724                 } else if (ndlp->nlp_fc4_type == 0) {
1725                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1726                                          0, ndlp->nlp_DID);
1727                         return ndlp->nlp_state;
1728                 }
1729
1730                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1731                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1732                 lpfc_issue_els_prli(vport, ndlp, 0);
1733         } else {
1734                 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1735                         phba->targetport->port_id = vport->fc_myDID;
1736
1737                 /* Only Fabric ports should transition. NVME target
1738                  * must complete PRLI.
1739                  */
1740                 if (ndlp->nlp_type & NLP_FABRIC) {
1741                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1742                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1743                 }
1744         }
1745         return ndlp->nlp_state;
1746 }
1747
1748 static uint32_t
1749 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1750                               struct lpfc_nodelist *ndlp,
1751                               void *arg,
1752                               uint32_t evt)
1753 {
1754         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1755
1756         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1757                 spin_lock_irq(shost->host_lock);
1758                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1759                 spin_unlock_irq(shost->host_lock);
1760                 return ndlp->nlp_state;
1761         } else {
1762                 lpfc_drop_node(vport, ndlp);
1763                 return NLP_STE_FREED_NODE;
1764         }
1765 }
1766
1767 static uint32_t
1768 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1769                                  struct lpfc_nodelist *ndlp,
1770                                  void *arg,
1771                                  uint32_t evt)
1772 {
1773         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1774
1775         /* Don't do anything that will mess up processing of the
1776          * previous RSCN.
1777          */
1778         if (vport->fc_flag & FC_RSCN_DEFERRED)
1779                 return ndlp->nlp_state;
1780
1781         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1782         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1783         spin_lock_irq(shost->host_lock);
1784
1785         /* If we are a target we won't immediately transition into PRLI,
1786          * so if REG_LOGIN already completed we don't need to ignore it.
1787          */
1788         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1789             !vport->phba->nvmet_support)
1790                 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1791
1792         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1793         spin_unlock_irq(shost->host_lock);
1794         lpfc_disc_set_adisc(vport, ndlp);
1795         return ndlp->nlp_state;
1796 }
1797
1798 static uint32_t
1799 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1800                           void *arg, uint32_t evt)
1801 {
1802         struct lpfc_iocbq *cmdiocb;
1803
1804         cmdiocb = (struct lpfc_iocbq *) arg;
1805
1806         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1807         return ndlp->nlp_state;
1808 }
1809
1810 static uint32_t
1811 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1812                          void *arg, uint32_t evt)
1813 {
1814         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1815
1816         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1817         return ndlp->nlp_state;
1818 }
1819
1820 static uint32_t
1821 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1822                          void *arg, uint32_t evt)
1823 {
1824         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1825
1826         /* Software abort outstanding PRLI before sending acc */
1827         lpfc_els_abort(vport->phba, ndlp);
1828
1829         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1830         return ndlp->nlp_state;
1831 }
1832
1833 static uint32_t
1834 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1835                            void *arg, uint32_t evt)
1836 {
1837         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1838
1839         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1840         return ndlp->nlp_state;
1841 }
1842
1843 /* This routine is envoked when we rcv a PRLO request from a nport
1844  * we are logged into.  We should send back a PRLO rsp setting the
1845  * appropriate bits.
1846  * NEXT STATE = PRLI_ISSUE
1847  */
1848 static uint32_t
1849 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1850                          void *arg, uint32_t evt)
1851 {
1852         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1853
1854         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1855         return ndlp->nlp_state;
1856 }
1857
1858 static uint32_t
1859 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1860                           void *arg, uint32_t evt)
1861 {
1862         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1863         struct lpfc_iocbq *cmdiocb, *rspiocb;
1864         struct lpfc_hba   *phba = vport->phba;
1865         IOCB_t *irsp;
1866         PRLI *npr;
1867         struct lpfc_nvme_prli *nvpr;
1868         void *temp_ptr;
1869
1870         cmdiocb = (struct lpfc_iocbq *) arg;
1871         rspiocb = cmdiocb->context_un.rsp_iocb;
1872
1873         /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
1874          * format is different so NULL the two PRLI types so that the
1875          * driver correctly gets the correct context.
1876          */
1877         npr = NULL;
1878         nvpr = NULL;
1879         temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1880         if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1881                 npr = (PRLI *) temp_ptr;
1882         else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1883                 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1884
1885         irsp = &rspiocb->iocb;
1886         if (irsp->ulpStatus) {
1887                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1888                     vport->cfg_restrict_login) {
1889                         goto out;
1890                 }
1891
1892                 /* The LS Req had some error.  Don't let this be a
1893                  * target.
1894                  */
1895                 if ((ndlp->fc4_prli_sent == 1) &&
1896                     (ndlp->nlp_state == NLP_STE_PRLI_ISSUE) &&
1897                     (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_FCP_INITIATOR)))
1898                         /* The FCP PRLI completed successfully but
1899                          * the NVME PRLI failed.  Since they are sent in
1900                          * succession, allow the FCP to complete.
1901                          */
1902                         goto out_err;
1903
1904                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1905                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1906                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1907                 return ndlp->nlp_state;
1908         }
1909
1910         /* Check out PRLI rsp */
1911         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1912         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1913
1914         /* NVME or FCP first burst must be negotiated for each PRLI. */
1915         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1916         ndlp->nvme_fb_size = 0;
1917         if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1918             (npr->prliType == PRLI_FCP_TYPE)) {
1919                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1920                                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1921                                  npr->initiatorFunc,
1922                                  npr->targetFunc);
1923                 if (npr->initiatorFunc)
1924                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1925                 if (npr->targetFunc) {
1926                         ndlp->nlp_type |= NLP_FCP_TARGET;
1927                         if (npr->writeXferRdyDis)
1928                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1929                 }
1930                 if (npr->Retry)
1931                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1932
1933                 /* PRLI completed.  Decrement count. */
1934                 ndlp->fc4_prli_sent--;
1935         } else if (nvpr &&
1936                    (bf_get_be32(prli_acc_rsp_code, nvpr) ==
1937                     PRLI_REQ_EXECUTED) &&
1938                    (bf_get_be32(prli_type_code, nvpr) ==
1939                     PRLI_NVME_TYPE)) {
1940
1941                 /* Complete setting up the remote ndlp personality. */
1942                 if (bf_get_be32(prli_init, nvpr))
1943                         ndlp->nlp_type |= NLP_NVME_INITIATOR;
1944
1945                 /* Target driver cannot solicit NVME FB. */
1946                 if (bf_get_be32(prli_tgt, nvpr)) {
1947                         ndlp->nlp_type |= NLP_NVME_TARGET;
1948                         if ((bf_get_be32(prli_fba, nvpr) == 1) &&
1949                             (bf_get_be32(prli_fb_sz, nvpr) > 0) &&
1950                             (phba->cfg_nvme_enable_fb) &&
1951                             (!phba->nvmet_support)) {
1952                                 /* Both sides support FB. The target's first
1953                                  * burst size is a 512 byte encoded value.
1954                                  */
1955                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1956                                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
1957                                                                  nvpr);
1958                         }
1959                 }
1960
1961                 if (bf_get_be32(prli_recov, nvpr))
1962                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1963
1964                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1965                                  "6029 NVME PRLI Cmpl w1 x%08x "
1966                                  "w4 x%08x w5 x%08x flag x%x, "
1967                                  "fcp_info x%x nlp_type x%x\n",
1968                                  be32_to_cpu(nvpr->word1),
1969                                  be32_to_cpu(nvpr->word4),
1970                                  be32_to_cpu(nvpr->word5),
1971                                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
1972                                  ndlp->nlp_type);
1973                 /* PRLI completed.  Decrement count. */
1974                 ndlp->fc4_prli_sent--;
1975         }
1976         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1977             (vport->port_type == LPFC_NPIV_PORT) &&
1978              vport->cfg_restrict_login) {
1979 out:
1980                 spin_lock_irq(shost->host_lock);
1981                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1982                 spin_unlock_irq(shost->host_lock);
1983                 lpfc_issue_els_logo(vport, ndlp, 0);
1984
1985                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1986                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1987                 return ndlp->nlp_state;
1988         }
1989
1990 out_err:
1991         /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
1992          * are complete.
1993          */
1994         if (ndlp->fc4_prli_sent == 0) {
1995                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1996                 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
1997                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1998                 else
1999                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2000         } else
2001                 lpfc_printf_vlog(vport,
2002                                  KERN_INFO, LOG_ELS,
2003                                  "3067 PRLI's still outstanding "
2004                                  "on x%06x - count %d, Pend Node Mode "
2005                                  "transition...\n",
2006                                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
2007
2008         return ndlp->nlp_state;
2009 }
2010
2011 /*! lpfc_device_rm_prli_issue
2012  *
2013  * \pre
2014  * \post
2015  * \param   phba
2016  * \param   ndlp
2017  * \param   arg
2018  * \param   evt
2019  * \return  uint32_t
2020  *
2021  * \b Description:
2022  *    This routine is envoked when we a request to remove a nport we are in the
2023  *    process of PRLIing. We should software abort outstanding prli, unreg
2024  *    login, send a logout. We will change node state to UNUSED_NODE, put it
2025  *    on plogi list so it can be freed when LOGO completes.
2026  *
2027  */
2028
2029 static uint32_t
2030 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2031                           void *arg, uint32_t evt)
2032 {
2033         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2034
2035         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2036                 spin_lock_irq(shost->host_lock);
2037                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2038                 spin_unlock_irq(shost->host_lock);
2039                 return ndlp->nlp_state;
2040         } else {
2041                 /* software abort outstanding PLOGI */
2042                 lpfc_els_abort(vport->phba, ndlp);
2043
2044                 lpfc_drop_node(vport, ndlp);
2045                 return NLP_STE_FREED_NODE;
2046         }
2047 }
2048
2049
2050 /*! lpfc_device_recov_prli_issue
2051  *
2052  * \pre
2053  * \post
2054  * \param   phba
2055  * \param   ndlp
2056  * \param   arg
2057  * \param   evt
2058  * \return  uint32_t
2059  *
2060  * \b Description:
2061  *    The routine is envoked when the state of a device is unknown, like
2062  *    during a link down. We should remove the nodelist entry from the
2063  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
2064  *    outstanding PRLI command, then free the node entry.
2065  */
2066 static uint32_t
2067 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2068                              struct lpfc_nodelist *ndlp,
2069                              void *arg,
2070                              uint32_t evt)
2071 {
2072         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2073         struct lpfc_hba  *phba = vport->phba;
2074
2075         /* Don't do anything that will mess up processing of the
2076          * previous RSCN.
2077          */
2078         if (vport->fc_flag & FC_RSCN_DEFERRED)
2079                 return ndlp->nlp_state;
2080
2081         /* software abort outstanding PRLI */
2082         lpfc_els_abort(phba, ndlp);
2083
2084         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2085         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2086         spin_lock_irq(shost->host_lock);
2087         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2088         spin_unlock_irq(shost->host_lock);
2089         lpfc_disc_set_adisc(vport, ndlp);
2090         return ndlp->nlp_state;
2091 }
2092
2093 static uint32_t
2094 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2095                           void *arg, uint32_t evt)
2096 {
2097         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2098         struct ls_rjt     stat;
2099
2100         memset(&stat, 0, sizeof(struct ls_rjt));
2101         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2102         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2103         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2104         return ndlp->nlp_state;
2105 }
2106
2107 static uint32_t
2108 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2109                          void *arg, uint32_t evt)
2110 {
2111         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2112         struct ls_rjt     stat;
2113
2114         memset(&stat, 0, sizeof(struct ls_rjt));
2115         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2116         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2117         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2118         return ndlp->nlp_state;
2119 }
2120
2121 static uint32_t
2122 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2123                          void *arg, uint32_t evt)
2124 {
2125         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2126         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2127
2128         spin_lock_irq(shost->host_lock);
2129         ndlp->nlp_flag |= NLP_LOGO_ACC;
2130         spin_unlock_irq(shost->host_lock);
2131         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2132         return ndlp->nlp_state;
2133 }
2134
2135 static uint32_t
2136 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2137                            void *arg, uint32_t evt)
2138 {
2139         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2140         struct ls_rjt     stat;
2141
2142         memset(&stat, 0, sizeof(struct ls_rjt));
2143         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2144         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2145         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2146         return ndlp->nlp_state;
2147 }
2148
2149 static uint32_t
2150 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2151                          void *arg, uint32_t evt)
2152 {
2153         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2154         struct ls_rjt     stat;
2155
2156         memset(&stat, 0, sizeof(struct ls_rjt));
2157         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2158         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2159         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2160         return ndlp->nlp_state;
2161 }
2162
2163 static uint32_t
2164 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2165                           void *arg, uint32_t evt)
2166 {
2167         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2168
2169         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2170         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2171         spin_lock_irq(shost->host_lock);
2172         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2173         spin_unlock_irq(shost->host_lock);
2174         lpfc_disc_set_adisc(vport, ndlp);
2175         return ndlp->nlp_state;
2176 }
2177
2178 static uint32_t
2179 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2180                           void *arg, uint32_t evt)
2181 {
2182         /*
2183          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
2184          * timed out and is calling for Device Remove.  In this case, the LOGO
2185          * must be allowed to complete in state LOGO_ISSUE so that the rpi
2186          * and other NLP flags are correctly cleaned up.
2187          */
2188         return ndlp->nlp_state;
2189 }
2190
2191 static uint32_t
2192 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2193                              struct lpfc_nodelist *ndlp,
2194                              void *arg, uint32_t evt)
2195 {
2196         /*
2197          * Device Recovery events have no meaning for a node with a LOGO
2198          * outstanding.  The LOGO has to complete first and handle the
2199          * node from that point.
2200          */
2201         return ndlp->nlp_state;
2202 }
2203
2204 static uint32_t
2205 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2206                           void *arg, uint32_t evt)
2207 {
2208         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2209
2210         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2211         return ndlp->nlp_state;
2212 }
2213
2214 static uint32_t
2215 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2216                          void *arg, uint32_t evt)
2217 {
2218         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2219
2220         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2221         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2222         return ndlp->nlp_state;
2223 }
2224
2225 static uint32_t
2226 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2227                          void *arg, uint32_t evt)
2228 {
2229         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2230
2231         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2232         return ndlp->nlp_state;
2233 }
2234
2235 static uint32_t
2236 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2237                            void *arg, uint32_t evt)
2238 {
2239         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2240
2241         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2242         return ndlp->nlp_state;
2243 }
2244
2245 static uint32_t
2246 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2247                          void *arg, uint32_t evt)
2248 {
2249         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2250
2251         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2252         return ndlp->nlp_state;
2253 }
2254
2255 static uint32_t
2256 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2257                              struct lpfc_nodelist *ndlp,
2258                              void *arg,
2259                              uint32_t evt)
2260 {
2261         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2262
2263         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2264         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2265         spin_lock_irq(shost->host_lock);
2266         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2267         spin_unlock_irq(shost->host_lock);
2268         lpfc_disc_set_adisc(vport, ndlp);
2269
2270         return ndlp->nlp_state;
2271 }
2272
2273 static uint32_t
2274 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2275                            void *arg, uint32_t evt)
2276 {
2277         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2278
2279         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2280         return ndlp->nlp_state;
2281 }
2282
2283 static uint32_t
2284 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2285                           void *arg, uint32_t evt)
2286 {
2287         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2288
2289         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2290         return ndlp->nlp_state;
2291 }
2292
2293 static uint32_t
2294 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2295                           void *arg, uint32_t evt)
2296 {
2297         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2298
2299         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2300         return ndlp->nlp_state;
2301 }
2302
2303 static uint32_t
2304 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2305                             struct lpfc_nodelist *ndlp,
2306                             void *arg, uint32_t evt)
2307 {
2308         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2309
2310         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2311         return ndlp->nlp_state;
2312 }
2313
2314 static uint32_t
2315 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2316                           void *arg, uint32_t evt)
2317 {
2318         struct lpfc_hba  *phba = vport->phba;
2319         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2320
2321         /* flush the target */
2322         lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2323                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2324
2325         /* Treat like rcv logo */
2326         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2327         return ndlp->nlp_state;
2328 }
2329
2330 static uint32_t
2331 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2332                               struct lpfc_nodelist *ndlp,
2333                               void *arg,
2334                               uint32_t evt)
2335 {
2336         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2337
2338         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2339         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2340         spin_lock_irq(shost->host_lock);
2341         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2342         spin_unlock_irq(shost->host_lock);
2343         lpfc_disc_set_adisc(vport, ndlp);
2344         return ndlp->nlp_state;
2345 }
2346
2347 static uint32_t
2348 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2349                         void *arg, uint32_t evt)
2350 {
2351         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2352         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2353
2354         /* Ignore PLOGI if we have an outstanding LOGO */
2355         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2356                 return ndlp->nlp_state;
2357         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2358                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2359                 spin_lock_irq(shost->host_lock);
2360                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2361                 spin_unlock_irq(shost->host_lock);
2362         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2363                 /* send PLOGI immediately, move to PLOGI issue state */
2364                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2365                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2366                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2367                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2368                 }
2369         }
2370         return ndlp->nlp_state;
2371 }
2372
2373 static uint32_t
2374 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2375                        void *arg, uint32_t evt)
2376 {
2377         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2378         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2379         struct ls_rjt     stat;
2380
2381         memset(&stat, 0, sizeof (struct ls_rjt));
2382         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2383         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2384         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2385
2386         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2387                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2388                         spin_lock_irq(shost->host_lock);
2389                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2390                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2391                         spin_unlock_irq(shost->host_lock);
2392                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2393                         lpfc_issue_els_adisc(vport, ndlp, 0);
2394                 } else {
2395                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2396                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2397                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2398                 }
2399         }
2400         return ndlp->nlp_state;
2401 }
2402
2403 static uint32_t
2404 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2405                        void *arg, uint32_t evt)
2406 {
2407         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2408
2409         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2410         return ndlp->nlp_state;
2411 }
2412
2413 static uint32_t
2414 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2415                          void *arg, uint32_t evt)
2416 {
2417         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2418
2419         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2420         /*
2421          * Do not start discovery if discovery is about to start
2422          * or discovery in progress for this node. Starting discovery
2423          * here will affect the counting of discovery threads.
2424          */
2425         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2426             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2427                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2428                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2429                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2430                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2431                         lpfc_issue_els_adisc(vport, ndlp, 0);
2432                 } else {
2433                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2434                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2435                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2436                 }
2437         }
2438         return ndlp->nlp_state;
2439 }
2440
2441 static uint32_t
2442 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2443                        void *arg, uint32_t evt)
2444 {
2445         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2446         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2447
2448         spin_lock_irq(shost->host_lock);
2449         ndlp->nlp_flag |= NLP_LOGO_ACC;
2450         spin_unlock_irq(shost->host_lock);
2451
2452         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2453
2454         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2455                 mod_timer(&ndlp->nlp_delayfunc,
2456                           jiffies + msecs_to_jiffies(1000 * 1));
2457                 spin_lock_irq(shost->host_lock);
2458                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2459                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2460                 spin_unlock_irq(shost->host_lock);
2461                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2462         } else {
2463                 spin_lock_irq(shost->host_lock);
2464                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2465                 spin_unlock_irq(shost->host_lock);
2466         }
2467         return ndlp->nlp_state;
2468 }
2469
2470 static uint32_t
2471 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2472                          void *arg, uint32_t evt)
2473 {
2474         struct lpfc_iocbq *cmdiocb, *rspiocb;
2475         IOCB_t *irsp;
2476         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2477
2478         cmdiocb = (struct lpfc_iocbq *) arg;
2479         rspiocb = cmdiocb->context_un.rsp_iocb;
2480
2481         irsp = &rspiocb->iocb;
2482         if (irsp->ulpStatus) {
2483                 spin_lock_irq(shost->host_lock);
2484                 ndlp->nlp_flag |= NLP_DEFER_RM;
2485                 spin_unlock_irq(shost->host_lock);
2486                 return NLP_STE_FREED_NODE;
2487         }
2488         return ndlp->nlp_state;
2489 }
2490
2491 static uint32_t
2492 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2493                         void *arg, uint32_t evt)
2494 {
2495         struct lpfc_iocbq *cmdiocb, *rspiocb;
2496         IOCB_t *irsp;
2497
2498         cmdiocb = (struct lpfc_iocbq *) arg;
2499         rspiocb = cmdiocb->context_un.rsp_iocb;
2500
2501         irsp = &rspiocb->iocb;
2502         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2503                 lpfc_drop_node(vport, ndlp);
2504                 return NLP_STE_FREED_NODE;
2505         }
2506         return ndlp->nlp_state;
2507 }
2508
2509 static uint32_t
2510 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2511                         void *arg, uint32_t evt)
2512 {
2513         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2514
2515         /* For the fabric port just clear the fc flags. */
2516         if (ndlp->nlp_DID == Fabric_DID) {
2517                 spin_lock_irq(shost->host_lock);
2518                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2519                 spin_unlock_irq(shost->host_lock);
2520         }
2521         lpfc_unreg_rpi(vport, ndlp);
2522         return ndlp->nlp_state;
2523 }
2524
2525 static uint32_t
2526 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2527                          void *arg, uint32_t evt)
2528 {
2529         struct lpfc_iocbq *cmdiocb, *rspiocb;
2530         IOCB_t *irsp;
2531
2532         cmdiocb = (struct lpfc_iocbq *) arg;
2533         rspiocb = cmdiocb->context_un.rsp_iocb;
2534
2535         irsp = &rspiocb->iocb;
2536         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2537                 lpfc_drop_node(vport, ndlp);
2538                 return NLP_STE_FREED_NODE;
2539         }
2540         return ndlp->nlp_state;
2541 }
2542
2543 static uint32_t
2544 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2545                             struct lpfc_nodelist *ndlp,
2546                             void *arg, uint32_t evt)
2547 {
2548         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2549         MAILBOX_t    *mb = &pmb->u.mb;
2550
2551         if (!mb->mbxStatus) {
2552                 /* SLI4 ports have preallocated logical rpis. */
2553                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2554                         ndlp->nlp_rpi = mb->un.varWords[0];
2555                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2556                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2557                         lpfc_unreg_rpi(vport, ndlp);
2558                 }
2559         } else {
2560                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2561                         lpfc_drop_node(vport, ndlp);
2562                         return NLP_STE_FREED_NODE;
2563                 }
2564         }
2565         return ndlp->nlp_state;
2566 }
2567
2568 static uint32_t
2569 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2570                         void *arg, uint32_t evt)
2571 {
2572         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2573
2574         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2575                 spin_lock_irq(shost->host_lock);
2576                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2577                 spin_unlock_irq(shost->host_lock);
2578                 return ndlp->nlp_state;
2579         }
2580         lpfc_drop_node(vport, ndlp);
2581         return NLP_STE_FREED_NODE;
2582 }
2583
2584 static uint32_t
2585 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2586                            void *arg, uint32_t evt)
2587 {
2588         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2589
2590         /* Don't do anything that will mess up processing of the
2591          * previous RSCN.
2592          */
2593         if (vport->fc_flag & FC_RSCN_DEFERRED)
2594                 return ndlp->nlp_state;
2595
2596         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2597         spin_lock_irq(shost->host_lock);
2598         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2599         spin_unlock_irq(shost->host_lock);
2600         return ndlp->nlp_state;
2601 }
2602
2603
2604 /* This next section defines the NPort Discovery State Machine */
2605
2606 /* There are 4 different double linked lists nodelist entries can reside on.
2607  * The plogi list and adisc list are used when Link Up discovery or RSCN
2608  * processing is needed. Each list holds the nodes that we will send PLOGI
2609  * or ADISC on. These lists will keep track of what nodes will be effected
2610  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2611  * The unmapped_list will contain all nodes that we have successfully logged
2612  * into at the Fibre Channel level. The mapped_list will contain all nodes
2613  * that are mapped FCP targets.
2614  */
2615 /*
2616  * The bind list is a list of undiscovered (potentially non-existent) nodes
2617  * that we have saved binding information on. This information is used when
2618  * nodes transition from the unmapped to the mapped list.
2619  */
2620 /* For UNUSED_NODE state, the node has just been allocated .
2621  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2622  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2623  * and put on the unmapped list. For ADISC processing, the node is taken off
2624  * the ADISC list and placed on either the mapped or unmapped list (depending
2625  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2626  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2627  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2628  * node, the node is taken off the unmapped list. The binding list is checked
2629  * for a valid binding, or a binding is automatically assigned. If binding
2630  * assignment is unsuccessful, the node is left on the unmapped list. If
2631  * binding assignment is successful, the associated binding list entry (if
2632  * any) is removed, and the node is placed on the mapped list.
2633  */
2634 /*
2635  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2636  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2637  * expire, all effected nodes will receive a DEVICE_RM event.
2638  */
2639 /*
2640  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2641  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2642  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2643  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2644  * we will first process the ADISC list.  32 entries are processed initially and
2645  * ADISC is initited for each one.  Completions / Events for each node are
2646  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2647  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2648  * waiting, and the ADISC list count is identically 0, then we are done. For
2649  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2650  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2651  * list.  32 entries are processed initially and PLOGI is initited for each one.
2652  * Completions / Events for each node are funnelled thru the state machine.  As
2653  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2654  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2655  * indentically 0, then we are done. We have now completed discovery / RSCN
2656  * handling. Upon completion, ALL nodes should be on either the mapped or
2657  * unmapped lists.
2658  */
2659
2660 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2661      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2662         /* Action routine                  Event       Current State  */
2663         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2664         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2665         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2666         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2667         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2668         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2669         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2670         lpfc_disc_illegal,              /* CMPL_PRLI       */
2671         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2672         lpfc_disc_illegal,              /* CMPL_ADISC      */
2673         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2674         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2675         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2676
2677         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2678         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2679         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2680         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2681         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2682         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2683         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2684         lpfc_disc_illegal,              /* CMPL_PRLI       */
2685         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2686         lpfc_disc_illegal,              /* CMPL_ADISC      */
2687         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2688         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2689         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2690
2691         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2692         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2693         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2694         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2695         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2696         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2697         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2698         lpfc_disc_illegal,              /* CMPL_PRLI       */
2699         lpfc_disc_illegal,              /* CMPL_LOGO       */
2700         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2701         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2702         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2703         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2704
2705         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2706         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2707         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2708         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2709         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2710         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2711         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2712         lpfc_disc_illegal,              /* CMPL_PRLI       */
2713         lpfc_disc_illegal,              /* CMPL_LOGO       */
2714         lpfc_disc_illegal,              /* CMPL_ADISC      */
2715         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2716         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2717         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2718
2719         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2720         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2721         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2722         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2723         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2724         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2725         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2726         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2727         lpfc_disc_illegal,              /* CMPL_LOGO       */
2728         lpfc_disc_illegal,              /* CMPL_ADISC      */
2729         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2730         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2731         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2732
2733         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2734         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2735         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2736         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2737         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2738         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2739         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2740         lpfc_disc_illegal,              /* CMPL_PRLI       */
2741         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2742         lpfc_disc_illegal,              /* CMPL_ADISC      */
2743         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2744         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2745         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2746
2747         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2748         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2749         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2750         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2751         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2752         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2753         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2754         lpfc_disc_illegal,              /* CMPL_PRLI       */
2755         lpfc_disc_illegal,              /* CMPL_LOGO       */
2756         lpfc_disc_illegal,              /* CMPL_ADISC      */
2757         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2758         lpfc_disc_illegal,              /* DEVICE_RM       */
2759         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2760
2761         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2762         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2763         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2764         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2765         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2766         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2767         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2768         lpfc_disc_illegal,              /* CMPL_PRLI       */
2769         lpfc_disc_illegal,              /* CMPL_LOGO       */
2770         lpfc_disc_illegal,              /* CMPL_ADISC      */
2771         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2772         lpfc_disc_illegal,              /* DEVICE_RM       */
2773         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2774
2775         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2776         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2777         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2778         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2779         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2780         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2781         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2782         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2783         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2784         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2785         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2786         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2787         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2788 };
2789
2790 int
2791 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2792                         void *arg, uint32_t evt)
2793 {
2794         uint32_t cur_state, rc;
2795         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2796                          uint32_t);
2797         uint32_t got_ndlp = 0;
2798
2799         if (lpfc_nlp_get(ndlp))
2800                 got_ndlp = 1;
2801
2802         cur_state = ndlp->nlp_state;
2803
2804         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2805         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2806                          "0211 DSM in event x%x on NPort x%x in "
2807                          "state %d Data: x%x\n",
2808                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2809
2810         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2811                  "DSM in:          evt:%d ste:%d did:x%x",
2812                 evt, cur_state, ndlp->nlp_DID);
2813
2814         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2815         rc = (func) (vport, ndlp, arg, evt);
2816
2817         /* DSM out state <rc> on NPort <nlp_DID> */
2818         if (got_ndlp) {
2819                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2820                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2821                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2822
2823                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2824                         "DSM out:         ste:%d did:x%x flg:x%x",
2825                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2826                 /* Decrement the ndlp reference count held for this function */
2827                 lpfc_nlp_put(ndlp);
2828         } else {
2829                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2830                         "0213 DSM out state %d on NPort free\n", rc);
2831
2832                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2833                         "DSM out:         ste:%d did:x%x flg:x%x",
2834                         rc, 0, 0);
2835         }
2836
2837         return rc;
2838 }