kernel/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) 2004-2015 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/slab.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_sli4.h"
  36 #include "lpfc_nl.h"
  37 #include "lpfc_disc.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45
  46 /* Called to verify a rcv'ed ADISC was intended for us. */
  47 static int
  48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  49                  struct lpfc_name *nn, struct lpfc_name *pn)
  50 {
  51         /* First, we MUST have a RPI registered */
  52         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
  53                 return 0;
  54
  55         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
  56          * table entry for that node.
  57          */
  58         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
  59                 return 0;
  60
  61         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
  62                 return 0;
  63
  64         /* we match, return success */
  65         return 1;
  66 }
  67
  68 int
  69 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
  70                  struct serv_parm *sp, uint32_t class, int flogi)
  71 {
  72         volatile struct serv_parm *hsp = &vport->fc_sparam;
  73         uint16_t hsp_value, ssp_value = 0;
  74
  75         /*
  76          * The receive data field size and buffer-to-buffer receive data field
  77          * size entries are 16 bits but are represented as two 8-bit fields in
  78          * the driver data structure to account for rsvd bits and other control
  79          * bits.  Reconstruct and compare the fields as a 16-bit values before
  80          * correcting the byte values.
  81          */
  82         if (sp->cls1.classValid) {
  83                 if (!flogi) {
  84                         hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
  85                                      hsp->cls1.rcvDataSizeLsb);
  86                         ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
  87                                      sp->cls1.rcvDataSizeLsb);
  88                         if (!ssp_value)
  89                                 goto bad_service_param;
  90                         if (ssp_value > hsp_value) {
  91                                 sp->cls1.rcvDataSizeLsb =
  92                                         hsp->cls1.rcvDataSizeLsb;
  93                                 sp->cls1.rcvDataSizeMsb =
  94                                         hsp->cls1.rcvDataSizeMsb;
  95                         }
  96                 }
  97         } else if (class == CLASS1)
  98                 goto bad_service_param;
  99         if (sp->cls2.classValid) {
 100                 if (!flogi) {
 101                         hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
 102                                      hsp->cls2.rcvDataSizeLsb);
 103                         ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
 104                                      sp->cls2.rcvDataSizeLsb);
 105                         if (!ssp_value)
 106                                 goto bad_service_param;
 107                         if (ssp_value > hsp_value) {
 108                                 sp->cls2.rcvDataSizeLsb =
 109                                         hsp->cls2.rcvDataSizeLsb;
 110                                 sp->cls2.rcvDataSizeMsb =
 111                                         hsp->cls2.rcvDataSizeMsb;
 112                         }
 113                 }
 114         } else if (class == CLASS2)
 115                 goto bad_service_param;
 116         if (sp->cls3.classValid) {
 117                 if (!flogi) {
 118                         hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
 119                                      hsp->cls3.rcvDataSizeLsb);
 120                         ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
 121                                      sp->cls3.rcvDataSizeLsb);
 122                         if (!ssp_value)
 123                                 goto bad_service_param;
 124                         if (ssp_value > hsp_value) {
 125                                 sp->cls3.rcvDataSizeLsb =
 126                                         hsp->cls3.rcvDataSizeLsb;
 127                                 sp->cls3.rcvDataSizeMsb =
 128                                         hsp->cls3.rcvDataSizeMsb;
 129                         }
 130                 }
 131         } else if (class == CLASS3)
 132                 goto bad_service_param;
 133
 134         /*
 135          * Preserve the upper four bits of the MSB from the PLOGI response.
 136          * These bits contain the Buffer-to-Buffer State Change Number
 137          * from the target and need to be passed to the FW.
 138          */
 139         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
 140         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
 141         if (ssp_value > hsp_value) {
 142                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
 143                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
 144                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
 145         }
 146
 147         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
 148         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
 149         return 1;
 150 bad_service_param:
 151         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 152                          "0207 Device %x "
 153                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
 154                          "invalid service parameters.  Ignoring device.\n",
 155                          ndlp->nlp_DID,
 156                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
 157                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
 158                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
 159                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
 160         return 0;
 161 }
 162
 163 static void *
 164 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 165                         struct lpfc_iocbq *rspiocb)
 166 {
 167         struct lpfc_dmabuf *pcmd, *prsp;
 168         uint32_t *lp;
 169         void     *ptr = NULL;
 170         IOCB_t   *irsp;
 171
 172         irsp = &rspiocb->iocb;
 173         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 174
 175         /* For lpfc_els_abort, context2 could be zero'ed to delay
 176          * freeing associated memory till after ABTS completes.
 177          */
 178         if (pcmd) {
 179                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
 180                                        list);
 181                 if (prsp) {
 182                         lp = (uint32_t *) prsp->virt;
 183                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 184                 }
 185         } else {
 186                 /* Force ulpStatus error since we are returning NULL ptr */
 187                 if (!(irsp->ulpStatus)) {
 188                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
 189                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
 190                 }
 191                 ptr = NULL;
 192         }
 193         return ptr;
 194 }
 195
 196
 197
 198 /*
 199  * Free resources / clean up outstanding I/Os
 200  * associated with a LPFC_NODELIST entry. This
 201  * routine effectively results in a "software abort".
 202  */
 203 int
 204 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 205 {
 206         LIST_HEAD(abort_list);
 207         struct lpfc_sli  *psli = &phba->sli;
 208         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
 209         struct lpfc_iocbq *iocb, *next_iocb;
 210
 211         /* Abort outstanding I/O on NPort <nlp_DID> */
 212         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
 213                          "2819 Abort outstanding I/O on NPort x%x "
 214                          "Data: x%x x%x x%x\n",
 215                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
 216                          ndlp->nlp_rpi);
 217         /* Clean up all fabric IOs first.*/
 218         lpfc_fabric_abort_nport(ndlp);
 219
 220         /*
 221          * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
 222          * of all ELS IOs that need an ABTS.  The IOs need to stay on the
 223          * txcmplq so that the abort operation completes them successfully.
 224          */
 225         spin_lock_irq(&phba->hbalock);
 226         if (phba->sli_rev == LPFC_SLI_REV4)
 227                 spin_lock(&pring->ring_lock);
 228         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
 229         /* Add to abort_list on on NDLP match. */
 230                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
 231                         list_add_tail(&iocb->dlist, &abort_list);
 232         }
 233         if (phba->sli_rev == LPFC_SLI_REV4)
 234                 spin_unlock(&pring->ring_lock);
 235         spin_unlock_irq(&phba->hbalock);
 236
 237         /* Abort the targeted IOs and remove them from the abort list. */
 238         list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
 239                         spin_lock_irq(&phba->hbalock);
 240                         list_del_init(&iocb->dlist);
 241                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
 242                         spin_unlock_irq(&phba->hbalock);
 243         }
 244
 245         INIT_LIST_HEAD(&abort_list);
 246
 247         /* Now process the txq */
 248         spin_lock_irq(&phba->hbalock);
 249         if (phba->sli_rev == LPFC_SLI_REV4)
 250                 spin_lock(&pring->ring_lock);
 251
 252         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
 253                 /* Check to see if iocb matches the nport we are looking for */
 254                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
 255                         list_del_init(&iocb->list);
 256                         list_add_tail(&iocb->list, &abort_list);
 257                 }
 258         }
 259
 260         if (phba->sli_rev == LPFC_SLI_REV4)
 261                 spin_unlock(&pring->ring_lock);
 262         spin_unlock_irq(&phba->hbalock);
 263
 264         /* Cancel all the IOCBs from the completions list */
 265         lpfc_sli_cancel_iocbs(phba, &abort_list,
 266                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 267
 268         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
 269         return 0;
 270 }
 271
 272 static int
 273 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 274                struct lpfc_iocbq *cmdiocb)
 275 {
 276         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 277         struct lpfc_hba    *phba = vport->phba;
 278         struct lpfc_dmabuf *pcmd;
 279         uint64_t nlp_portwwn = 0;
 280         uint32_t *lp;
 281         IOCB_t *icmd;
 282         struct serv_parm *sp;
 283         uint32_t ed_tov;
 284         LPFC_MBOXQ_t *mbox;
 285         struct ls_rjt stat;
 286         int rc;
 287
 288         memset(&stat, 0, sizeof (struct ls_rjt));
 289         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 290         lp = (uint32_t *) pcmd->virt;
 291         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
 292         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
 293                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 294                                  "0140 PLOGI Reject: invalid nname\n");
 295                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 296                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
 297                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 298                         NULL);
 299                 return 0;
 300         }
 301         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
 302                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 303                                  "0141 PLOGI Reject: invalid pname\n");
 304                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 305                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
 306                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 307                         NULL);
 308                 return 0;
 309         }
 310
 311         nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 312         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
 313                 /* Reject this request because invalid parameters */
 314                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 315                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 316                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 317                         NULL);
 318                 return 0;
 319         }
 320         icmd = &cmdiocb->iocb;
 321
 322         /* PLOGI chkparm OK */
 323         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 324                          "0114 PLOGI chkparm OK Data: x%x x%x x%x "
 325                          "x%x x%x x%x\n",
 326                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
 327                          ndlp->nlp_rpi, vport->port_state,
 328                          vport->fc_flag);
 329
 330         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
 331                 ndlp->nlp_fcp_info |= CLASS2;
 332         else
 333                 ndlp->nlp_fcp_info |= CLASS3;
 334
 335         ndlp->nlp_class_sup = 0;
 336         if (sp->cls1.classValid)
 337                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 338         if (sp->cls2.classValid)
 339                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 340         if (sp->cls3.classValid)
 341                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 342         if (sp->cls4.classValid)
 343                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 344         ndlp->nlp_maxframe =
 345                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 346
 347         /* if already logged in, do implicit logout */
 348         switch (ndlp->nlp_state) {
 349         case  NLP_STE_NPR_NODE:
 350                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
 351                         break;
 352         case  NLP_STE_REG_LOGIN_ISSUE:
 353         case  NLP_STE_PRLI_ISSUE:
 354         case  NLP_STE_UNMAPPED_NODE:
 355         case  NLP_STE_MAPPED_NODE:
 356                 /* lpfc_plogi_confirm_nport skips fabric did, handle it here */
 357                 if (!(ndlp->nlp_type & NLP_FABRIC)) {
 358                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 359                                          ndlp, NULL);
 360                         return 1;
 361                 }
 362                 if (nlp_portwwn != 0 &&
 363                     nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
 364                         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
 365                                          "0143 PLOGI recv'd from DID: x%x "
 366                                          "WWPN changed: old %llx new %llx\n",
 367                                          ndlp->nlp_DID,
 368                                          (unsigned long long)nlp_portwwn,
 369                                          (unsigned long long)
 370                                          wwn_to_u64(sp->portName.u.wwn));
 371
 372                 ndlp->nlp_prev_state = ndlp->nlp_state;
 373                 /* rport needs to be unregistered first */
 374                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 375                 break;
 376         }
 377
 378         /* Check for Nport to NPort pt2pt protocol */
 379         if ((vport->fc_flag & FC_PT2PT) &&
 380             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 381                 /* rcv'ed PLOGI decides what our NPortId will be */
 382                 vport->fc_myDID = icmd->un.rcvels.parmRo;
 383
 384                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
 385                 if (sp->cmn.edtovResolution) {
 386                         /* E_D_TOV ticks are in nanoseconds */
 387                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
 388                 }
 389
 390                 /*
 391                  * For pt-to-pt, use the larger EDTOV
 392                  * RATOV = 2 * EDTOV
 393                  */
 394                 if (ed_tov > phba->fc_edtov)
 395                         phba->fc_edtov = ed_tov;
 396                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 397
 398                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 399
 400                 /* Issue config_link / reg_vfi to account for updated TOV's */
 401
 402                 if (phba->sli_rev == LPFC_SLI_REV4)
 403                         lpfc_issue_reg_vfi(vport);
 404                 else {
 405                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 406                         if (mbox == NULL)
 407                                 goto out;
 408                         lpfc_config_link(phba, mbox);
 409                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 410                         mbox->vport = vport;
 411                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 412                         if (rc == MBX_NOT_FINISHED) {
 413                                 mempool_free(mbox, phba->mbox_mem_pool);
 414                                 goto out;
 415                         }
 416                 }
 417
 418                 lpfc_can_disctmo(vport);
 419         }
 420
 421         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 422         if (!mbox)
 423                 goto out;
 424
 425         /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
 426         if (phba->sli_rev == LPFC_SLI_REV4)
 427                 lpfc_unreg_rpi(vport, ndlp);
 428
 429         rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
 430                             (uint8_t *) sp, mbox, ndlp->nlp_rpi);
 431         if (rc) {
 432                 mempool_free(mbox, phba->mbox_mem_pool);
 433                 goto out;
 434         }
 435
 436         /* ACC PLOGI rsp command needs to execute first,
 437          * queue this mbox command to be processed later.
 438          */
 439         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
 440         /*
 441          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
 442          * command issued in lpfc_cmpl_els_acc().
 443          */
 444         mbox->vport = vport;
 445         spin_lock_irq(shost->host_lock);
 446         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
 447         spin_unlock_irq(shost->host_lock);
 448
 449         /*
 450          * If there is an outstanding PLOGI issued, abort it before
 451          * sending ACC rsp for received PLOGI. If pending plogi
 452          * is not canceled here, the plogi will be rejected by
 453          * remote port and will be retried. On a configuration with
 454          * single discovery thread, this will cause a huge delay in
 455          * discovery. Also this will cause multiple state machines
 456          * running in parallel for this node.
 457          */
 458         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
 459                 /* software abort outstanding PLOGI */
 460                 lpfc_els_abort(phba, ndlp);
 461         }
 462
 463         if ((vport->port_type == LPFC_NPIV_PORT &&
 464              vport->cfg_restrict_login)) {
 465
 466                 /* In order to preserve RPIs, we want to cleanup
 467                  * the default RPI the firmware created to rcv
 468                  * this ELS request. The only way to do this is
 469                  * to register, then unregister the RPI.
 470                  */
 471                 spin_lock_irq(shost->host_lock);
 472                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
 473                 spin_unlock_irq(shost->host_lock);
 474                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
 475                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 476                 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
 477                         ndlp, mbox);
 478                 if (rc)
 479                         mempool_free(mbox, phba->mbox_mem_pool);
 480                 return 1;
 481         }
 482         rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
 483         if (rc)
 484                 mempool_free(mbox, phba->mbox_mem_pool);
 485         return 1;
 486 out:
 487         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 488         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
 489         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 490         return 0;
 491 }
 492
 493 /**
 494  * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
 495  * @phba: pointer to lpfc hba data structure.
 496  * @mboxq: pointer to mailbox object
 497  *
 498  * This routine is invoked to issue a completion to a rcv'ed
 499  * ADISC or PDISC after the paused RPI has been resumed.
 500  **/
 501 static void
 502 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 503 {
 504         struct lpfc_vport *vport;
 505         struct lpfc_iocbq *elsiocb;
 506         struct lpfc_nodelist *ndlp;
 507         uint32_t cmd;
 508
 509         elsiocb = (struct lpfc_iocbq *)mboxq->context1;
 510         ndlp = (struct lpfc_nodelist *) mboxq->context2;
 511         vport = mboxq->vport;
 512         cmd = elsiocb->drvrTimeout;
 513
 514         if (cmd == ELS_CMD_ADISC) {
 515                 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
 516         } else {
 517                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
 518                         ndlp, NULL);
 519         }
 520         kfree(elsiocb);
 521         mempool_free(mboxq, phba->mbox_mem_pool);
 522 }
 523
 524 static int
 525 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 526                 struct lpfc_iocbq *cmdiocb)
 527 {
 528         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 529         struct lpfc_iocbq  *elsiocb;
 530         struct lpfc_dmabuf *pcmd;
 531         struct serv_parm   *sp;
 532         struct lpfc_name   *pnn, *ppn;
 533         struct ls_rjt stat;
 534         ADISC *ap;
 535         IOCB_t *icmd;
 536         uint32_t *lp;
 537         uint32_t cmd;
 538
 539         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 540         lp = (uint32_t *) pcmd->virt;
 541
 542         cmd = *lp++;
 543         if (cmd == ELS_CMD_ADISC) {
 544                 ap = (ADISC *) lp;
 545                 pnn = (struct lpfc_name *) & ap->nodeName;
 546                 ppn = (struct lpfc_name *) & ap->portName;
 547         } else {
 548                 sp = (struct serv_parm *) lp;
 549                 pnn = (struct lpfc_name *) & sp->nodeName;
 550                 ppn = (struct lpfc_name *) & sp->portName;
 551         }
 552
 553         icmd = &cmdiocb->iocb;
 554         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
 555
 556                 /*
 557                  * As soon as  we send ACC, the remote NPort can
 558                  * start sending us data. Thus, for SLI4 we must
 559                  * resume the RPI before the ACC goes out.
 560                  */
 561                 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
 562                         elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
 563                                 GFP_KERNEL);
 564                         if (elsiocb) {
 565
 566                                 /* Save info from cmd IOCB used in rsp */
 567                                 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
 568                                         sizeof(struct lpfc_iocbq));
 569
 570                                 /* Save the ELS cmd */
 571                                 elsiocb->drvrTimeout = cmd;
 572
 573                                 lpfc_sli4_resume_rpi(ndlp,
 574                                         lpfc_mbx_cmpl_resume_rpi, elsiocb);
 575                                 goto out;
 576                         }
 577                 }
 578
 579                 if (cmd == ELS_CMD_ADISC) {
 580                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
 581                 } else {
 582                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
 583                                 ndlp, NULL);
 584                 }
 585 out:
 586                 /* If we are authenticated, move to the proper state */
 587                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 588                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
 589                 else
 590                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 591
 592                 return 1;
 593         }
 594         /* Reject this request because invalid parameters */
 595         stat.un.b.lsRjtRsvd0 = 0;
 596         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 597         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
 598         stat.un.b.vendorUnique = 0;
 599         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 600
 601         /* 1 sec timeout */
 602         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
 603
 604         spin_lock_irq(shost->host_lock);
 605         ndlp->nlp_flag |= NLP_DELAY_TMO;
 606         spin_unlock_irq(shost->host_lock);
 607         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 608         ndlp->nlp_prev_state = ndlp->nlp_state;
 609         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 610         return 0;
 611 }
 612
 613 static int
 614 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 615               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
 616 {
 617         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 618         struct lpfc_hba    *phba = vport->phba;
 619         struct lpfc_vport **vports;
 620         int i, active_vlink_present = 0 ;
 621
 622         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
 623         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
 624          * PLOGIs during LOGO storms from a device.
 625          */
 626         spin_lock_irq(shost->host_lock);
 627         ndlp->nlp_flag |= NLP_LOGO_ACC;
 628         spin_unlock_irq(shost->host_lock);
 629         if (els_cmd == ELS_CMD_PRLO)
 630                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
 631         else
 632                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 633         if (ndlp->nlp_DID == Fabric_DID) {
 634                 if (vport->port_state <= LPFC_FDISC)
 635                         goto out;
 636                 lpfc_linkdown_port(vport);
 637                 spin_lock_irq(shost->host_lock);
 638                 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
 639                 spin_unlock_irq(shost->host_lock);
 640                 vports = lpfc_create_vport_work_array(phba);
 641                 if (vports) {
 642                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
 643                                         i++) {
 644                                 if ((!(vports[i]->fc_flag &
 645                                         FC_VPORT_LOGO_RCVD)) &&
 646                                         (vports[i]->port_state > LPFC_FDISC)) {
 647                                         active_vlink_present = 1;
 648                                         break;
 649                                 }
 650                         }
 651                         lpfc_destroy_vport_work_array(phba, vports);
 652                 }
 653
 654                 /*
 655                  * Don't re-instantiate if vport is marked for deletion.
 656                  * If we are here first then vport_delete is going to wait
 657                  * for discovery to complete.
 658                  */
 659                 if (!(vport->load_flag & FC_UNLOADING) &&
 660                                         active_vlink_present) {
 661                         /*
 662                          * If there are other active VLinks present,
 663                          * re-instantiate the Vlink using FDISC.
 664                          */
 665                         mod_timer(&ndlp->nlp_delayfunc,
 666                                   jiffies + msecs_to_jiffies(1000));
 667                         spin_lock_irq(shost->host_lock);
 668                         ndlp->nlp_flag |= NLP_DELAY_TMO;
 669                         spin_unlock_irq(shost->host_lock);
 670                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
 671                         vport->port_state = LPFC_FDISC;
 672                 } else {
 673                         spin_lock_irq(shost->host_lock);
 674                         phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
 675                         spin_unlock_irq(shost->host_lock);
 676                         lpfc_retry_pport_discovery(phba);
 677                 }
 678         } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
 679                 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
 680                 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
 681                 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
 682                 /* Only try to re-login if this is NOT a Fabric Node */
 683                 mod_timer(&ndlp->nlp_delayfunc,
 684                           jiffies + msecs_to_jiffies(1000 * 1));
 685                 spin_lock_irq(shost->host_lock);
 686                 ndlp->nlp_flag |= NLP_DELAY_TMO;
 687                 spin_unlock_irq(shost->host_lock);
 688
 689                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 690         }
 691 out:
 692         ndlp->nlp_prev_state = ndlp->nlp_state;
 693         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 694
 695         spin_lock_irq(shost->host_lock);
 696         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 697         spin_unlock_irq(shost->host_lock);
 698         /* The driver has to wait until the ACC completes before it continues
 699          * processing the LOGO.  The action will resume in
 700          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
 701          * unreg_login, the driver waits so the ACC does not get aborted.
 702          */
 703         return 0;
 704 }
 705
 706 static void
 707 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 708               struct lpfc_iocbq *cmdiocb)
 709 {
 710         struct lpfc_dmabuf *pcmd;
 711         uint32_t *lp;
 712         PRLI *npr;
 713         struct fc_rport *rport = ndlp->rport;
 714         u32 roles;
 715
 716         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 717         lp = (uint32_t *) pcmd->virt;
 718         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
 719
 720         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
 721         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
 722         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 723         if (npr->prliType == PRLI_FCP_TYPE) {
 724                 if (npr->initiatorFunc)
 725                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
 726                 if (npr->targetFunc) {
 727                         ndlp->nlp_type |= NLP_FCP_TARGET;
 728                         if (npr->writeXferRdyDis)
 729                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
 730                 }
 731                 if (npr->Retry)
 732                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 733         }
 734         if (rport) {
 735                 /* We need to update the rport role values */
 736                 roles = FC_RPORT_ROLE_UNKNOWN;
 737                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 738                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 739                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 740                         roles |= FC_RPORT_ROLE_FCP_TARGET;
 741
 742                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 743                         "rport rolechg:   role:x%x did:x%x flg:x%x",
 744                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
 745
 746                 fc_remote_port_rolechg(rport, roles);
 747         }
 748 }
 749
 750 static uint32_t
 751 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 752 {
 753         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 754
 755         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
 756                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 757                 return 0;
 758         }
 759
 760         if (!(vport->fc_flag & FC_PT2PT)) {
 761                 /* Check config parameter use-adisc or FCP-2 */
 762                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
 763                     ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
 764                      (ndlp->nlp_type & NLP_FCP_TARGET))) {
 765                         spin_lock_irq(shost->host_lock);
 766                         ndlp->nlp_flag |= NLP_NPR_ADISC;
 767                         spin_unlock_irq(shost->host_lock);
 768                         return 1;
 769                 }
 770         }
 771         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
 772         lpfc_unreg_rpi(vport, ndlp);
 773         return 0;
 774 }
 775
 776 /**
 777  * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
 778  * @phba : Pointer to lpfc_hba structure.
 779  * @vport: Pointer to lpfc_vport structure.
 780  * @rpi  : rpi to be release.
 781  *
 782  * This function will send a unreg_login mailbox command to the firmware
 783  * to release a rpi.
 784  **/
 785 void
 786 lpfc_release_rpi(struct lpfc_hba *phba,
 787                 struct lpfc_vport *vport,
 788                 uint16_t rpi)
 789 {
 790         LPFC_MBOXQ_t *pmb;
 791         int rc;
 792
 793         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
 794                         GFP_KERNEL);
 795         if (!pmb)
 796                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 797                         "2796 mailbox memory allocation failed \n");
 798         else {
 799                 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
 800                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 801                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 802                 if (rc == MBX_NOT_FINISHED)
 803                         mempool_free(pmb, phba->mbox_mem_pool);
 804         }
 805 }
 806
 807 static uint32_t
 808 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 809                   void *arg, uint32_t evt)
 810 {
 811         struct lpfc_hba *phba;
 812         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
 813         uint16_t rpi;
 814
 815         phba = vport->phba;
 816         /* Release the RPI if reglogin completing */
 817         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 818                 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
 819                 (!pmb->u.mb.mbxStatus)) {
 820                 rpi = pmb->u.mb.un.varWords[0];
 821                 lpfc_release_rpi(phba, vport, rpi);
 822         }
 823         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 824                          "0271 Illegal State Transition: node x%x "
 825                          "event x%x, state x%x Data: x%x x%x\n",
 826                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 827                          ndlp->nlp_flag);
 828         return ndlp->nlp_state;
 829 }
 830
 831 static uint32_t
 832 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 833                   void *arg, uint32_t evt)
 834 {
 835         /* This transition is only legal if we previously
 836          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
 837          * working on the same NPortID, do nothing for this thread
 838          * to stop it.
 839          */
 840         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
 841                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 842                          "0272 Illegal State Transition: node x%x "
 843                          "event x%x, state x%x Data: x%x x%x\n",
 844                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
 845                          ndlp->nlp_flag);
 846         }
 847         return ndlp->nlp_state;
 848 }
 849
 850 /* Start of Discovery State Machine routines */
 851
 852 static uint32_t
 853 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 854                            void *arg, uint32_t evt)
 855 {
 856         struct lpfc_iocbq *cmdiocb;
 857
 858         cmdiocb = (struct lpfc_iocbq *) arg;
 859
 860         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
 861                 return ndlp->nlp_state;
 862         }
 863         return NLP_STE_FREED_NODE;
 864 }
 865
 866 static uint32_t
 867 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 868                          void *arg, uint32_t evt)
 869 {
 870         lpfc_issue_els_logo(vport, ndlp, 0);
 871         return ndlp->nlp_state;
 872 }
 873
 874 static uint32_t
 875 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 876                           void *arg, uint32_t evt)
 877 {
 878         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 879         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 880
 881         spin_lock_irq(shost->host_lock);
 882         ndlp->nlp_flag |= NLP_LOGO_ACC;
 883         spin_unlock_irq(shost->host_lock);
 884         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 885
 886         return ndlp->nlp_state;
 887 }
 888
 889 static uint32_t
 890 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 891                            void *arg, uint32_t evt)
 892 {
 893         return NLP_STE_FREED_NODE;
 894 }
 895
 896 static uint32_t
 897 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 898                            void *arg, uint32_t evt)
 899 {
 900         return NLP_STE_FREED_NODE;
 901 }
 902
 903 static uint32_t
 904 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
 905                         struct lpfc_nodelist *ndlp,
 906                            void *arg, uint32_t evt)
 907 {
 908         return ndlp->nlp_state;
 909 }
 910
 911 static uint32_t
 912 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 913                            void *arg, uint32_t evt)
 914 {
 915         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
 916         struct lpfc_hba   *phba = vport->phba;
 917         struct lpfc_iocbq *cmdiocb = arg;
 918         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 919         uint32_t *lp = (uint32_t *) pcmd->virt;
 920         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
 921         struct ls_rjt stat;
 922         int port_cmp;
 923
 924         memset(&stat, 0, sizeof (struct ls_rjt));
 925
 926         /* For a PLOGI, we only accept if our portname is less
 927          * than the remote portname.
 928          */
 929         phba->fc_stat.elsLogiCol++;
 930         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
 931                           sizeof(struct lpfc_name));
 932
 933         if (port_cmp >= 0) {
 934                 /* Reject this request because the remote node will accept
 935                    ours */
 936                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 937                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 938                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
 939                         NULL);
 940         } else {
 941                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
 942                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 943                     (vport->num_disc_nodes)) {
 944                         spin_lock_irq(shost->host_lock);
 945                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 946                         spin_unlock_irq(shost->host_lock);
 947                         /* Check if there are more PLOGIs to be sent */
 948                         lpfc_more_plogi(vport);
 949                         if (vport->num_disc_nodes == 0) {
 950                                 spin_lock_irq(shost->host_lock);
 951                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 952                                 spin_unlock_irq(shost->host_lock);
 953                                 lpfc_can_disctmo(vport);
 954                                 lpfc_end_rscn(vport);
 955                         }
 956                 }
 957         } /* If our portname was less */
 958
 959         return ndlp->nlp_state;
 960 }
 961
 962 static uint32_t
 963 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 964                           void *arg, uint32_t evt)
 965 {
 966         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 967         struct ls_rjt     stat;
 968
 969         memset(&stat, 0, sizeof (struct ls_rjt));
 970         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
 971         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
 972         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
 973         return ndlp->nlp_state;
 974 }
 975
 976 static uint32_t
 977 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 978                           void *arg, uint32_t evt)
 979 {
 980         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 981
 982                                 /* software abort outstanding PLOGI */
 983         lpfc_els_abort(vport->phba, ndlp);
 984
 985         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
 986         return ndlp->nlp_state;
 987 }
 988
 989 static uint32_t
 990 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 991                          void *arg, uint32_t evt)
 992 {
 993         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 994         struct lpfc_hba   *phba = vport->phba;
 995         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 996
 997         /* software abort outstanding PLOGI */
 998         lpfc_els_abort(phba, ndlp);
 999
1000         if (evt == NLP_EVT_RCV_LOGO) {
1001                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1002         } else {
1003                 lpfc_issue_els_logo(vport, ndlp, 0);
1004         }
1005
1006         /* Put ndlp in npr state set plogi timer for 1 sec */
1007         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1008         spin_lock_irq(shost->host_lock);
1009         ndlp->nlp_flag |= NLP_DELAY_TMO;
1010         spin_unlock_irq(shost->host_lock);
1011         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1012         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1013         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1014
1015         return ndlp->nlp_state;
1016 }
1017
1018 static uint32_t
1019 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1020                             struct lpfc_nodelist *ndlp,
1021                             void *arg,
1022                             uint32_t evt)
1023 {
1024         struct lpfc_hba    *phba = vport->phba;
1025         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1026         struct lpfc_iocbq  *cmdiocb, *rspiocb;
1027         struct lpfc_dmabuf *pcmd, *prsp, *mp;
1028         uint32_t *lp;
1029         IOCB_t *irsp;
1030         struct serv_parm *sp;
1031         uint32_t ed_tov;
1032         LPFC_MBOXQ_t *mbox;
1033         int rc;
1034
1035         cmdiocb = (struct lpfc_iocbq *) arg;
1036         rspiocb = cmdiocb->context_un.rsp_iocb;
1037
1038         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1039                 /* Recovery from PLOGI collision logic */
1040                 return ndlp->nlp_state;
1041         }
1042
1043         irsp = &rspiocb->iocb;
1044
1045         if (irsp->ulpStatus)
1046                 goto out;
1047
1048         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1049
1050         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1051         if (!prsp)
1052                 goto out;
1053
1054         lp = (uint32_t *) prsp->virt;
1055         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1056
1057         /* Some switches have FDMI servers returning 0 for WWN */
1058         if ((ndlp->nlp_DID != FDMI_DID) &&
1059                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1060                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1061                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1062                                  "0142 PLOGI RSP: Invalid WWN.\n");
1063                 goto out;
1064         }
1065         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1066                 goto out;
1067         /* PLOGI chkparm OK */
1068         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1069                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1070                          ndlp->nlp_DID, ndlp->nlp_state,
1071                          ndlp->nlp_flag, ndlp->nlp_rpi);
1072         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1073                 ndlp->nlp_fcp_info |= CLASS2;
1074         else
1075                 ndlp->nlp_fcp_info |= CLASS3;
1076
1077         ndlp->nlp_class_sup = 0;
1078         if (sp->cls1.classValid)
1079                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1080         if (sp->cls2.classValid)
1081                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1082         if (sp->cls3.classValid)
1083                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1084         if (sp->cls4.classValid)
1085                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1086         ndlp->nlp_maxframe =
1087                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1088
1089         if ((vport->fc_flag & FC_PT2PT) &&
1090             (vport->fc_flag & FC_PT2PT_PLOGI)) {
1091                 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1092                 if (sp->cmn.edtovResolution) {
1093                         /* E_D_TOV ticks are in nanoseconds */
1094                         ed_tov = (phba->fc_edtov + 999999) / 1000000;
1095                 }
1096
1097                 /*
1098                  * Use the larger EDTOV
1099                  * RATOV = 2 * EDTOV for pt-to-pt
1100                  */
1101                 if (ed_tov > phba->fc_edtov)
1102                         phba->fc_edtov = ed_tov;
1103                 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1104
1105                 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1106
1107                 /* Issue config_link / reg_vfi to account for updated TOV's */
1108                 if (phba->sli_rev == LPFC_SLI_REV4) {
1109                         lpfc_issue_reg_vfi(vport);
1110                 } else {
1111                         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1112                         if (!mbox) {
1113                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1114                                                  "0133 PLOGI: no memory "
1115                                                  "for config_link "
1116                                                  "Data: x%x x%x x%x x%x\n",
1117                                                  ndlp->nlp_DID, ndlp->nlp_state,
1118                                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1119                                 goto out;
1120                         }
1121
1122                         lpfc_config_link(phba, mbox);
1123
1124                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1125                         mbox->vport = vport;
1126                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1127                         if (rc == MBX_NOT_FINISHED) {
1128                                 mempool_free(mbox, phba->mbox_mem_pool);
1129                                 goto out;
1130                         }
1131                 }
1132         }
1133
1134         lpfc_unreg_rpi(vport, ndlp);
1135
1136         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1137         if (!mbox) {
1138                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1139                                  "0018 PLOGI: no memory for reg_login "
1140                                  "Data: x%x x%x x%x x%x\n",
1141                                  ndlp->nlp_DID, ndlp->nlp_state,
1142                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1143                 goto out;
1144         }
1145
1146         if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1147                          (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1148                 switch (ndlp->nlp_DID) {
1149                 case NameServer_DID:
1150                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1151                         break;
1152                 case FDMI_DID:
1153                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1154                         break;
1155                 default:
1156                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1157                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1158                 }
1159                 mbox->context2 = lpfc_nlp_get(ndlp);
1160                 mbox->vport = vport;
1161                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1162                     != MBX_NOT_FINISHED) {
1163                         lpfc_nlp_set_state(vport, ndlp,
1164                                            NLP_STE_REG_LOGIN_ISSUE);
1165                         return ndlp->nlp_state;
1166                 }
1167                 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1168                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1169                 /* decrement node reference count to the failed mbox
1170                  * command
1171                  */
1172                 lpfc_nlp_put(ndlp);
1173                 mp = (struct lpfc_dmabuf *) mbox->context1;
1174                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1175                 kfree(mp);
1176                 mempool_free(mbox, phba->mbox_mem_pool);
1177
1178                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1179                                  "0134 PLOGI: cannot issue reg_login "
1180                                  "Data: x%x x%x x%x x%x\n",
1181                                  ndlp->nlp_DID, ndlp->nlp_state,
1182                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1183         } else {
1184                 mempool_free(mbox, phba->mbox_mem_pool);
1185
1186                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1187                                  "0135 PLOGI: cannot format reg_login "
1188                                  "Data: x%x x%x x%x x%x\n",
1189                                  ndlp->nlp_DID, ndlp->nlp_state,
1190                                  ndlp->nlp_flag, ndlp->nlp_rpi);
1191         }
1192
1193
1194 out:
1195         if (ndlp->nlp_DID == NameServer_DID) {
1196                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1197                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1198                                  "0261 Cannot Register NameServer login\n");
1199         }
1200
1201         /*
1202         ** In case the node reference counter does not go to zero, ensure that
1203         ** the stale state for the node is not processed.
1204         */
1205
1206         ndlp->nlp_prev_state = ndlp->nlp_state;
1207         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1208         spin_lock_irq(shost->host_lock);
1209         ndlp->nlp_flag |= NLP_DEFER_RM;
1210         spin_unlock_irq(shost->host_lock);
1211         return NLP_STE_FREED_NODE;
1212 }
1213
1214 static uint32_t
1215 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1216                            void *arg, uint32_t evt)
1217 {
1218         return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1223         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1224 {
1225         struct lpfc_hba *phba;
1226         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1227         MAILBOX_t *mb = &pmb->u.mb;
1228         uint16_t rpi;
1229
1230         phba = vport->phba;
1231         /* Release the RPI */
1232         if (!(phba->pport->load_flag & FC_UNLOADING) &&
1233                 !mb->mbxStatus) {
1234                 rpi = pmb->u.mb.un.varWords[0];
1235                 lpfc_release_rpi(phba, vport, rpi);
1236         }
1237         return ndlp->nlp_state;
1238 }
1239
1240 static uint32_t
1241 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1242                            void *arg, uint32_t evt)
1243 {
1244         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1245
1246         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1247                 spin_lock_irq(shost->host_lock);
1248                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1249                 spin_unlock_irq(shost->host_lock);
1250                 return ndlp->nlp_state;
1251         } else {
1252                 /* software abort outstanding PLOGI */
1253                 lpfc_els_abort(vport->phba, ndlp);
1254
1255                 lpfc_drop_node(vport, ndlp);
1256                 return NLP_STE_FREED_NODE;
1257         }
1258 }
1259
1260 static uint32_t
1261 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1262                               struct lpfc_nodelist *ndlp,
1263                               void *arg,
1264                               uint32_t evt)
1265 {
1266         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1267         struct lpfc_hba  *phba = vport->phba;
1268
1269         /* Don't do anything that will mess up processing of the
1270          * previous RSCN.
1271          */
1272         if (vport->fc_flag & FC_RSCN_DEFERRED)
1273                 return ndlp->nlp_state;
1274
1275         /* software abort outstanding PLOGI */
1276         lpfc_els_abort(phba, ndlp);
1277
1278         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1279         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1280         spin_lock_irq(shost->host_lock);
1281         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1282         spin_unlock_irq(shost->host_lock);
1283
1284         return ndlp->nlp_state;
1285 }
1286
1287 static uint32_t
1288 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1289                            void *arg, uint32_t evt)
1290 {
1291         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
1292         struct lpfc_hba   *phba = vport->phba;
1293         struct lpfc_iocbq *cmdiocb;
1294
1295         /* software abort outstanding ADISC */
1296         lpfc_els_abort(phba, ndlp);
1297
1298         cmdiocb = (struct lpfc_iocbq *) arg;
1299
1300         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1301                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1302                         spin_lock_irq(shost->host_lock);
1303                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1304                         spin_unlock_irq(shost->host_lock);
1305                         if (vport->num_disc_nodes)
1306                                 lpfc_more_adisc(vport);
1307                 }
1308                 return ndlp->nlp_state;
1309         }
1310         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1311         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1312         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1313
1314         return ndlp->nlp_state;
1315 }
1316
1317 static uint32_t
1318 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1319                           void *arg, uint32_t evt)
1320 {
1321         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1322
1323         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1324         return ndlp->nlp_state;
1325 }
1326
1327 static uint32_t
1328 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1329                           void *arg, uint32_t evt)
1330 {
1331         struct lpfc_hba *phba = vport->phba;
1332         struct lpfc_iocbq *cmdiocb;
1333
1334         cmdiocb = (struct lpfc_iocbq *) arg;
1335
1336         /* software abort outstanding ADISC */
1337         lpfc_els_abort(phba, ndlp);
1338
1339         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1340         return ndlp->nlp_state;
1341 }
1342
1343 static uint32_t
1344 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1345                             struct lpfc_nodelist *ndlp,
1346                             void *arg, uint32_t evt)
1347 {
1348         struct lpfc_iocbq *cmdiocb;
1349
1350         cmdiocb = (struct lpfc_iocbq *) arg;
1351
1352         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1353         return ndlp->nlp_state;
1354 }
1355
1356 static uint32_t
1357 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1358                           void *arg, uint32_t evt)
1359 {
1360         struct lpfc_iocbq *cmdiocb;
1361
1362         cmdiocb = (struct lpfc_iocbq *) arg;
1363
1364         /* Treat like rcv logo */
1365         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1366         return ndlp->nlp_state;
1367 }
1368
1369 static uint32_t
1370 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1371                             struct lpfc_nodelist *ndlp,
1372                             void *arg, uint32_t evt)
1373 {
1374         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1375         struct lpfc_hba   *phba = vport->phba;
1376         struct lpfc_iocbq *cmdiocb, *rspiocb;
1377         IOCB_t *irsp;
1378         ADISC *ap;
1379         int rc;
1380
1381         cmdiocb = (struct lpfc_iocbq *) arg;
1382         rspiocb = cmdiocb->context_un.rsp_iocb;
1383
1384         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1385         irsp = &rspiocb->iocb;
1386
1387         if ((irsp->ulpStatus) ||
1388             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1389                 /* 1 sec timeout */
1390                 mod_timer(&ndlp->nlp_delayfunc,
1391                           jiffies + msecs_to_jiffies(1000));
1392                 spin_lock_irq(shost->host_lock);
1393                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1394                 spin_unlock_irq(shost->host_lock);
1395                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1396
1397                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1398                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1399
1400                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1401                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1402                 lpfc_unreg_rpi(vport, ndlp);
1403                 return ndlp->nlp_state;
1404         }
1405
1406         if (phba->sli_rev == LPFC_SLI_REV4) {
1407                 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1408                 if (rc) {
1409                         /* Stay in state and retry. */
1410                         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1411                         return ndlp->nlp_state;
1412                 }
1413         }
1414
1415         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1416                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1417                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1418         } else {
1419                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1420                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1421         }
1422
1423         return ndlp->nlp_state;
1424 }
1425
1426 static uint32_t
1427 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1428                            void *arg, uint32_t evt)
1429 {
1430         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1431
1432         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1433                 spin_lock_irq(shost->host_lock);
1434                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1435                 spin_unlock_irq(shost->host_lock);
1436                 return ndlp->nlp_state;
1437         } else {
1438                 /* software abort outstanding ADISC */
1439                 lpfc_els_abort(vport->phba, ndlp);
1440
1441                 lpfc_drop_node(vport, ndlp);
1442                 return NLP_STE_FREED_NODE;
1443         }
1444 }
1445
1446 static uint32_t
1447 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1448                               struct lpfc_nodelist *ndlp,
1449                               void *arg,
1450                               uint32_t evt)
1451 {
1452         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1453         struct lpfc_hba  *phba = vport->phba;
1454
1455         /* Don't do anything that will mess up processing of the
1456          * previous RSCN.
1457          */
1458         if (vport->fc_flag & FC_RSCN_DEFERRED)
1459                 return ndlp->nlp_state;
1460
1461         /* software abort outstanding ADISC */
1462         lpfc_els_abort(phba, ndlp);
1463
1464         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1465         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1466         spin_lock_irq(shost->host_lock);
1467         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1468         spin_unlock_irq(shost->host_lock);
1469         lpfc_disc_set_adisc(vport, ndlp);
1470         return ndlp->nlp_state;
1471 }
1472
1473 static uint32_t
1474 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1475                               struct lpfc_nodelist *ndlp,
1476                               void *arg,
1477                               uint32_t evt)
1478 {
1479         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1480
1481         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1482         return ndlp->nlp_state;
1483 }
1484
1485 static uint32_t
1486 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1487                              struct lpfc_nodelist *ndlp,
1488                              void *arg,
1489                              uint32_t evt)
1490 {
1491         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1492
1493         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1494         return ndlp->nlp_state;
1495 }
1496
1497 static uint32_t
1498 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1499                              struct lpfc_nodelist *ndlp,
1500                              void *arg,
1501                              uint32_t evt)
1502 {
1503         struct lpfc_hba   *phba = vport->phba;
1504         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1505         LPFC_MBOXQ_t      *mb;
1506         LPFC_MBOXQ_t      *nextmb;
1507         struct lpfc_dmabuf *mp;
1508
1509         cmdiocb = (struct lpfc_iocbq *) arg;
1510
1511         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1512         if ((mb = phba->sli.mbox_active)) {
1513                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1514                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1515                         lpfc_nlp_put(ndlp);
1516                         mb->context2 = NULL;
1517                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1518                 }
1519         }
1520
1521         spin_lock_irq(&phba->hbalock);
1522         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1523                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1524                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1525                         mp = (struct lpfc_dmabuf *) (mb->context1);
1526                         if (mp) {
1527                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1528                                 kfree(mp);
1529                         }
1530                         lpfc_nlp_put(ndlp);
1531                         list_del(&mb->list);
1532                         phba->sli.mboxq_cnt--;
1533                         mempool_free(mb, phba->mbox_mem_pool);
1534                 }
1535         }
1536         spin_unlock_irq(&phba->hbalock);
1537
1538         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1539         return ndlp->nlp_state;
1540 }
1541
1542 static uint32_t
1543 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1544                                struct lpfc_nodelist *ndlp,
1545                                void *arg,
1546                                uint32_t evt)
1547 {
1548         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1549
1550         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1551         return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1556                              struct lpfc_nodelist *ndlp,
1557                              void *arg,
1558                              uint32_t evt)
1559 {
1560         struct lpfc_iocbq *cmdiocb;
1561
1562         cmdiocb = (struct lpfc_iocbq *) arg;
1563         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1564         return ndlp->nlp_state;
1565 }
1566
1567 static uint32_t
1568 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1569                                   struct lpfc_nodelist *ndlp,
1570                                   void *arg,
1571                                   uint32_t evt)
1572 {
1573         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1574         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1575         MAILBOX_t *mb = &pmb->u.mb;
1576         uint32_t did  = mb->un.varWords[1];
1577
1578         if (mb->mbxStatus) {
1579                 /* RegLogin failed */
1580                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1581                                 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1582                                  "x%x\n",
1583                                  did, mb->mbxStatus, vport->port_state,
1584                                  mb->un.varRegLogin.vpi,
1585                                  mb->un.varRegLogin.rpi);
1586                 /*
1587                  * If RegLogin failed due to lack of HBA resources do not
1588                  * retry discovery.
1589                  */
1590                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1591                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1592                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1593                         return ndlp->nlp_state;
1594                 }
1595
1596                 /* Put ndlp in npr state set plogi timer for 1 sec */
1597                 mod_timer(&ndlp->nlp_delayfunc,
1598                           jiffies + msecs_to_jiffies(1000 * 1));
1599                 spin_lock_irq(shost->host_lock);
1600                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1601                 spin_unlock_irq(shost->host_lock);
1602                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1603
1604                 lpfc_issue_els_logo(vport, ndlp, 0);
1605                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1606                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1607                 return ndlp->nlp_state;
1608         }
1609
1610         /* SLI4 ports have preallocated logical rpis. */
1611         if (vport->phba->sli_rev < LPFC_SLI_REV4)
1612                 ndlp->nlp_rpi = mb->un.varWords[0];
1613
1614         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1615
1616         /* Only if we are not a fabric nport do we issue PRLI */
1617         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1618                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1619                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1620                 lpfc_issue_els_prli(vport, ndlp, 0);
1621         } else {
1622                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1623                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1624         }
1625         return ndlp->nlp_state;
1626 }
1627
1628 static uint32_t
1629 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1630                               struct lpfc_nodelist *ndlp,
1631                               void *arg,
1632                               uint32_t evt)
1633 {
1634         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1635
1636         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1637                 spin_lock_irq(shost->host_lock);
1638                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1639                 spin_unlock_irq(shost->host_lock);
1640                 return ndlp->nlp_state;
1641         } else {
1642                 lpfc_drop_node(vport, ndlp);
1643                 return NLP_STE_FREED_NODE;
1644         }
1645 }
1646
1647 static uint32_t
1648 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1649                                  struct lpfc_nodelist *ndlp,
1650                                  void *arg,
1651                                  uint32_t evt)
1652 {
1653         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1654
1655         /* Don't do anything that will mess up processing of the
1656          * previous RSCN.
1657          */
1658         if (vport->fc_flag & FC_RSCN_DEFERRED)
1659                 return ndlp->nlp_state;
1660
1661         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1662         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1663         spin_lock_irq(shost->host_lock);
1664         ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1665         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1666         spin_unlock_irq(shost->host_lock);
1667         lpfc_disc_set_adisc(vport, ndlp);
1668         return ndlp->nlp_state;
1669 }
1670
1671 static uint32_t
1672 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1673                           void *arg, uint32_t evt)
1674 {
1675         struct lpfc_iocbq *cmdiocb;
1676
1677         cmdiocb = (struct lpfc_iocbq *) arg;
1678
1679         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1680         return ndlp->nlp_state;
1681 }
1682
1683 static uint32_t
1684 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1685                          void *arg, uint32_t evt)
1686 {
1687         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1688
1689         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1690         return ndlp->nlp_state;
1691 }
1692
1693 static uint32_t
1694 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1695                          void *arg, uint32_t evt)
1696 {
1697         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1698
1699         /* Software abort outstanding PRLI before sending acc */
1700         lpfc_els_abort(vport->phba, ndlp);
1701
1702         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1703         return ndlp->nlp_state;
1704 }
1705
1706 static uint32_t
1707 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1708                            void *arg, uint32_t evt)
1709 {
1710         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1711
1712         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1713         return ndlp->nlp_state;
1714 }
1715
1716 /* This routine is envoked when we rcv a PRLO request from a nport
1717  * we are logged into.  We should send back a PRLO rsp setting the
1718  * appropriate bits.
1719  * NEXT STATE = PRLI_ISSUE
1720  */
1721 static uint32_t
1722 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1723                          void *arg, uint32_t evt)
1724 {
1725         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1726
1727         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1728         return ndlp->nlp_state;
1729 }
1730
1731 static uint32_t
1732 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1733                           void *arg, uint32_t evt)
1734 {
1735         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1736         struct lpfc_iocbq *cmdiocb, *rspiocb;
1737         struct lpfc_hba   *phba = vport->phba;
1738         IOCB_t *irsp;
1739         PRLI *npr;
1740
1741         cmdiocb = (struct lpfc_iocbq *) arg;
1742         rspiocb = cmdiocb->context_un.rsp_iocb;
1743         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1744
1745         irsp = &rspiocb->iocb;
1746         if (irsp->ulpStatus) {
1747                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1748                     vport->cfg_restrict_login) {
1749                         goto out;
1750                 }
1751                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1752                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1753                 return ndlp->nlp_state;
1754         }
1755
1756         /* Check out PRLI rsp */
1757         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1758         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1759         ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1760         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1761             (npr->prliType == PRLI_FCP_TYPE)) {
1762                 if (npr->initiatorFunc)
1763                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1764                 if (npr->targetFunc) {
1765                         ndlp->nlp_type |= NLP_FCP_TARGET;
1766                         if (npr->writeXferRdyDis)
1767                                 ndlp->nlp_flag |= NLP_FIRSTBURST;
1768                 }
1769                 if (npr->Retry)
1770                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1771         }
1772         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1773             (vport->port_type == LPFC_NPIV_PORT) &&
1774              vport->cfg_restrict_login) {
1775 out:
1776                 spin_lock_irq(shost->host_lock);
1777                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1778                 spin_unlock_irq(shost->host_lock);
1779                 lpfc_issue_els_logo(vport, ndlp, 0);
1780
1781                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1782                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1783                 return ndlp->nlp_state;
1784         }
1785
1786         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1787         if (ndlp->nlp_type & NLP_FCP_TARGET)
1788                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1789         else
1790                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1791         return ndlp->nlp_state;
1792 }
1793
1794 /*! lpfc_device_rm_prli_issue
1795  *
1796  * \pre
1797  * \post
1798  * \param   phba
1799  * \param   ndlp
1800  * \param   arg
1801  * \param   evt
1802  * \return  uint32_t
1803  *
1804  * \b Description:
1805  *    This routine is envoked when we a request to remove a nport we are in the
1806  *    process of PRLIing. We should software abort outstanding prli, unreg
1807  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1808  *    on plogi list so it can be freed when LOGO completes.
1809  *
1810  */
1811
1812 static uint32_t
1813 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1814                           void *arg, uint32_t evt)
1815 {
1816         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1817
1818         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1819                 spin_lock_irq(shost->host_lock);
1820                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1821                 spin_unlock_irq(shost->host_lock);
1822                 return ndlp->nlp_state;
1823         } else {
1824                 /* software abort outstanding PLOGI */
1825                 lpfc_els_abort(vport->phba, ndlp);
1826
1827                 lpfc_drop_node(vport, ndlp);
1828                 return NLP_STE_FREED_NODE;
1829         }
1830 }
1831
1832
1833 /*! lpfc_device_recov_prli_issue
1834  *
1835  * \pre
1836  * \post
1837  * \param   phba
1838  * \param   ndlp
1839  * \param   arg
1840  * \param   evt
1841  * \return  uint32_t
1842  *
1843  * \b Description:
1844  *    The routine is envoked when the state of a device is unknown, like
1845  *    during a link down. We should remove the nodelist entry from the
1846  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1847  *    outstanding PRLI command, then free the node entry.
1848  */
1849 static uint32_t
1850 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1851                              struct lpfc_nodelist *ndlp,
1852                              void *arg,
1853                              uint32_t evt)
1854 {
1855         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1856         struct lpfc_hba  *phba = vport->phba;
1857
1858         /* Don't do anything that will mess up processing of the
1859          * previous RSCN.
1860          */
1861         if (vport->fc_flag & FC_RSCN_DEFERRED)
1862                 return ndlp->nlp_state;
1863
1864         /* software abort outstanding PRLI */
1865         lpfc_els_abort(phba, ndlp);
1866
1867         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1868         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1869         spin_lock_irq(shost->host_lock);
1870         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1871         spin_unlock_irq(shost->host_lock);
1872         lpfc_disc_set_adisc(vport, ndlp);
1873         return ndlp->nlp_state;
1874 }
1875
1876 static uint32_t
1877 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1878                           void *arg, uint32_t evt)
1879 {
1880         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1881         struct ls_rjt     stat;
1882
1883         memset(&stat, 0, sizeof(struct ls_rjt));
1884         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1885         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1886         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1887         return ndlp->nlp_state;
1888 }
1889
1890 static uint32_t
1891 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1892                          void *arg, uint32_t evt)
1893 {
1894         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1895         struct ls_rjt     stat;
1896
1897         memset(&stat, 0, sizeof(struct ls_rjt));
1898         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1899         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1900         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1901         return ndlp->nlp_state;
1902 }
1903
1904 static uint32_t
1905 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1906                          void *arg, uint32_t evt)
1907 {
1908         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1909         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1910
1911         spin_lock_irq(shost->host_lock);
1912         ndlp->nlp_flag |= NLP_LOGO_ACC;
1913         spin_unlock_irq(shost->host_lock);
1914         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1915         return ndlp->nlp_state;
1916 }
1917
1918 static uint32_t
1919 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1920                            void *arg, uint32_t evt)
1921 {
1922         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1923         struct ls_rjt     stat;
1924
1925         memset(&stat, 0, sizeof(struct ls_rjt));
1926         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1927         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1928         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1929         return ndlp->nlp_state;
1930 }
1931
1932 static uint32_t
1933 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1934                          void *arg, uint32_t evt)
1935 {
1936         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1937         struct ls_rjt     stat;
1938
1939         memset(&stat, 0, sizeof(struct ls_rjt));
1940         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1941         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1942         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1943         return ndlp->nlp_state;
1944 }
1945
1946 static uint32_t
1947 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1948                           void *arg, uint32_t evt)
1949 {
1950         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1951
1952         ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1953         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1954         spin_lock_irq(shost->host_lock);
1955         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1956         spin_unlock_irq(shost->host_lock);
1957         lpfc_disc_set_adisc(vport, ndlp);
1958         return ndlp->nlp_state;
1959 }
1960
1961 static uint32_t
1962 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1963                           void *arg, uint32_t evt)
1964 {
1965         /*
1966          * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
1967          * timed out and is calling for Device Remove.  In this case, the LOGO
1968          * must be allowed to complete in state LOGO_ISSUE so that the rpi
1969          * and other NLP flags are correctly cleaned up.
1970          */
1971         return ndlp->nlp_state;
1972 }
1973
1974 static uint32_t
1975 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1976                              struct lpfc_nodelist *ndlp,
1977                              void *arg, uint32_t evt)
1978 {
1979         /*
1980          * Device Recovery events have no meaning for a node with a LOGO
1981          * outstanding.  The LOGO has to complete first and handle the
1982          * node from that point.
1983          */
1984         return ndlp->nlp_state;
1985 }
1986
1987 static uint32_t
1988 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1989                           void *arg, uint32_t evt)
1990 {
1991         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1992
1993         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1994         return ndlp->nlp_state;
1995 }
1996
1997 static uint32_t
1998 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1999                          void *arg, uint32_t evt)
2000 {
2001         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2002
2003         lpfc_rcv_prli(vport, ndlp, cmdiocb);
2004         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2005         return ndlp->nlp_state;
2006 }
2007
2008 static uint32_t
2009 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2010                          void *arg, uint32_t evt)
2011 {
2012         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2013
2014         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2015         return ndlp->nlp_state;
2016 }
2017
2018 static uint32_t
2019 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2020                            void *arg, uint32_t evt)
2021 {
2022         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2023
2024         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2025         return ndlp->nlp_state;
2026 }
2027
2028 static uint32_t
2029 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2030                          void *arg, uint32_t evt)
2031 {
2032         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2033
2034         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2035         return ndlp->nlp_state;
2036 }
2037
2038 static uint32_t
2039 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2040                              struct lpfc_nodelist *ndlp,
2041                              void *arg,
2042                              uint32_t evt)
2043 {
2044         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2045
2046         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2047         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2048         spin_lock_irq(shost->host_lock);
2049         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2050         spin_unlock_irq(shost->host_lock);
2051         lpfc_disc_set_adisc(vport, ndlp);
2052
2053         return ndlp->nlp_state;
2054 }
2055
2056 static uint32_t
2057 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2058                            void *arg, uint32_t evt)
2059 {
2060         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2061
2062         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2063         return ndlp->nlp_state;
2064 }
2065
2066 static uint32_t
2067 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2068                           void *arg, uint32_t evt)
2069 {
2070         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2071
2072         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2073         return ndlp->nlp_state;
2074 }
2075
2076 static uint32_t
2077 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2078                           void *arg, uint32_t evt)
2079 {
2080         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2081
2082         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2083         return ndlp->nlp_state;
2084 }
2085
2086 static uint32_t
2087 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2088                             struct lpfc_nodelist *ndlp,
2089                             void *arg, uint32_t evt)
2090 {
2091         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2092
2093         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2094         return ndlp->nlp_state;
2095 }
2096
2097 static uint32_t
2098 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2099                           void *arg, uint32_t evt)
2100 {
2101         struct lpfc_hba  *phba = vport->phba;
2102         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2103
2104         /* flush the target */
2105         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2106                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2107
2108         /* Treat like rcv logo */
2109         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2110         return ndlp->nlp_state;
2111 }
2112
2113 static uint32_t
2114 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2115                               struct lpfc_nodelist *ndlp,
2116                               void *arg,
2117                               uint32_t evt)
2118 {
2119         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2120
2121         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2122         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2123         spin_lock_irq(shost->host_lock);
2124         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2125         spin_unlock_irq(shost->host_lock);
2126         lpfc_disc_set_adisc(vport, ndlp);
2127         return ndlp->nlp_state;
2128 }
2129
2130 static uint32_t
2131 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2132                         void *arg, uint32_t evt)
2133 {
2134         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2135         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
2136
2137         /* Ignore PLOGI if we have an outstanding LOGO */
2138         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2139                 return ndlp->nlp_state;
2140         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2141                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2142                 spin_lock_irq(shost->host_lock);
2143                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2144                 spin_unlock_irq(shost->host_lock);
2145         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2146                 /* send PLOGI immediately, move to PLOGI issue state */
2147                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2148                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2149                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2150                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2151                 }
2152         }
2153         return ndlp->nlp_state;
2154 }
2155
2156 static uint32_t
2157 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2158                        void *arg, uint32_t evt)
2159 {
2160         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2161         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2162         struct ls_rjt     stat;
2163
2164         memset(&stat, 0, sizeof (struct ls_rjt));
2165         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2166         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2167         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2168
2169         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2170                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2171                         spin_lock_irq(shost->host_lock);
2172                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2173                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2174                         spin_unlock_irq(shost->host_lock);
2175                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2176                         lpfc_issue_els_adisc(vport, ndlp, 0);
2177                 } else {
2178                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2179                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2180                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2181                 }
2182         }
2183         return ndlp->nlp_state;
2184 }
2185
2186 static uint32_t
2187 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
2188                        void *arg, uint32_t evt)
2189 {
2190         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2191
2192         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2193         return ndlp->nlp_state;
2194 }
2195
2196 static uint32_t
2197 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2198                          void *arg, uint32_t evt)
2199 {
2200         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2201
2202         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2203         /*
2204          * Do not start discovery if discovery is about to start
2205          * or discovery in progress for this node. Starting discovery
2206          * here will affect the counting of discovery threads.
2207          */
2208         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2209             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2210                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2211                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2212                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2213                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2214                         lpfc_issue_els_adisc(vport, ndlp, 0);
2215                 } else {
2216                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2217                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2218                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2219                 }
2220         }
2221         return ndlp->nlp_state;
2222 }
2223
2224 static uint32_t
2225 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2226                        void *arg, uint32_t evt)
2227 {
2228         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2229         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2230
2231         spin_lock_irq(shost->host_lock);
2232         ndlp->nlp_flag |= NLP_LOGO_ACC;
2233         spin_unlock_irq(shost->host_lock);
2234
2235         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2236
2237         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2238                 mod_timer(&ndlp->nlp_delayfunc,
2239                           jiffies + msecs_to_jiffies(1000 * 1));
2240                 spin_lock_irq(shost->host_lock);
2241                 ndlp->nlp_flag |= NLP_DELAY_TMO;
2242                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2243                 spin_unlock_irq(shost->host_lock);
2244                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2245         } else {
2246                 spin_lock_irq(shost->host_lock);
2247                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2248                 spin_unlock_irq(shost->host_lock);
2249         }
2250         return ndlp->nlp_state;
2251 }
2252
2253 static uint32_t
2254 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2255                          void *arg, uint32_t evt)
2256 {
2257         struct lpfc_iocbq *cmdiocb, *rspiocb;
2258         IOCB_t *irsp;
2259         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2260
2261         cmdiocb = (struct lpfc_iocbq *) arg;
2262         rspiocb = cmdiocb->context_un.rsp_iocb;
2263
2264         irsp = &rspiocb->iocb;
2265         if (irsp->ulpStatus) {
2266                 spin_lock_irq(shost->host_lock);
2267                 ndlp->nlp_flag |= NLP_DEFER_RM;
2268                 spin_unlock_irq(shost->host_lock);
2269                 return NLP_STE_FREED_NODE;
2270         }
2271         return ndlp->nlp_state;
2272 }
2273
2274 static uint32_t
2275 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2276                         void *arg, uint32_t evt)
2277 {
2278         struct lpfc_iocbq *cmdiocb, *rspiocb;
2279         IOCB_t *irsp;
2280
2281         cmdiocb = (struct lpfc_iocbq *) arg;
2282         rspiocb = cmdiocb->context_un.rsp_iocb;
2283
2284         irsp = &rspiocb->iocb;
2285         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2286                 lpfc_drop_node(vport, ndlp);
2287                 return NLP_STE_FREED_NODE;
2288         }
2289         return ndlp->nlp_state;
2290 }
2291
2292 static uint32_t
2293 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2294                         void *arg, uint32_t evt)
2295 {
2296         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2297
2298         /* For the fabric port just clear the fc flags. */
2299         if (ndlp->nlp_DID == Fabric_DID) {
2300                 spin_lock_irq(shost->host_lock);
2301                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2302                 spin_unlock_irq(shost->host_lock);
2303         }
2304         lpfc_unreg_rpi(vport, ndlp);
2305         return ndlp->nlp_state;
2306 }
2307
2308 static uint32_t
2309 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2310                          void *arg, uint32_t evt)
2311 {
2312         struct lpfc_iocbq *cmdiocb, *rspiocb;
2313         IOCB_t *irsp;
2314
2315         cmdiocb = (struct lpfc_iocbq *) arg;
2316         rspiocb = cmdiocb->context_un.rsp_iocb;
2317
2318         irsp = &rspiocb->iocb;
2319         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2320                 lpfc_drop_node(vport, ndlp);
2321                 return NLP_STE_FREED_NODE;
2322         }
2323         return ndlp->nlp_state;
2324 }
2325
2326 static uint32_t
2327 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2328                             struct lpfc_nodelist *ndlp,
2329                             void *arg, uint32_t evt)
2330 {
2331         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2332         MAILBOX_t    *mb = &pmb->u.mb;
2333
2334         if (!mb->mbxStatus) {
2335                 /* SLI4 ports have preallocated logical rpis. */
2336                 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2337                         ndlp->nlp_rpi = mb->un.varWords[0];
2338                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2339                 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2340                         lpfc_unreg_rpi(vport, ndlp);
2341                 }
2342         } else {
2343                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2344                         lpfc_drop_node(vport, ndlp);
2345                         return NLP_STE_FREED_NODE;
2346                 }
2347         }
2348         return ndlp->nlp_state;
2349 }
2350
2351 static uint32_t
2352 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2353                         void *arg, uint32_t evt)
2354 {
2355         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2356
2357         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2358                 spin_lock_irq(shost->host_lock);
2359                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2360                 spin_unlock_irq(shost->host_lock);
2361                 return ndlp->nlp_state;
2362         }
2363         lpfc_drop_node(vport, ndlp);
2364         return NLP_STE_FREED_NODE;
2365 }
2366
2367 static uint32_t
2368 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2369                            void *arg, uint32_t evt)
2370 {
2371         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2372
2373         /* Don't do anything that will mess up processing of the
2374          * previous RSCN.
2375          */
2376         if (vport->fc_flag & FC_RSCN_DEFERRED)
2377                 return ndlp->nlp_state;
2378
2379         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2380         spin_lock_irq(shost->host_lock);
2381         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2382         spin_unlock_irq(shost->host_lock);
2383         return ndlp->nlp_state;
2384 }
2385
2386
2387 /* This next section defines the NPort Discovery State Machine */
2388
2389 /* There are 4 different double linked lists nodelist entries can reside on.
2390  * The plogi list and adisc list are used when Link Up discovery or RSCN
2391  * processing is needed. Each list holds the nodes that we will send PLOGI
2392  * or ADISC on. These lists will keep track of what nodes will be effected
2393  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2394  * The unmapped_list will contain all nodes that we have successfully logged
2395  * into at the Fibre Channel level. The mapped_list will contain all nodes
2396  * that are mapped FCP targets.
2397  */
2398 /*
2399  * The bind list is a list of undiscovered (potentially non-existent) nodes
2400  * that we have saved binding information on. This information is used when
2401  * nodes transition from the unmapped to the mapped list.
2402  */
2403 /* For UNUSED_NODE state, the node has just been allocated .
2404  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2405  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2406  * and put on the unmapped list. For ADISC processing, the node is taken off
2407  * the ADISC list and placed on either the mapped or unmapped list (depending
2408  * on its previous state). Once on the unmapped list, a PRLI is issued and the
2409  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2410  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2411  * node, the node is taken off the unmapped list. The binding list is checked
2412  * for a valid binding, or a binding is automatically assigned. If binding
2413  * assignment is unsuccessful, the node is left on the unmapped list. If
2414  * binding assignment is successful, the associated binding list entry (if
2415  * any) is removed, and the node is placed on the mapped list.
2416  */
2417 /*
2418  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2419  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2420  * expire, all effected nodes will receive a DEVICE_RM event.
2421  */
2422 /*
2423  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2424  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2425  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2426  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2427  * we will first process the ADISC list.  32 entries are processed initially and
2428  * ADISC is initited for each one.  Completions / Events for each node are
2429  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2430  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2431  * waiting, and the ADISC list count is identically 0, then we are done. For
2432  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2433  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2434  * list.  32 entries are processed initially and PLOGI is initited for each one.
2435  * Completions / Events for each node are funnelled thru the state machine.  As
2436  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2437  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2438  * indentically 0, then we are done. We have now completed discovery / RSCN
2439  * handling. Upon completion, ALL nodes should be on either the mapped or
2440  * unmapped lists.
2441  */
2442
2443 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2444      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2445         /* Action routine                  Event       Current State  */
2446         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2447         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2448         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2449         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2450         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2451         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2452         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2453         lpfc_disc_illegal,              /* CMPL_PRLI       */
2454         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2455         lpfc_disc_illegal,              /* CMPL_ADISC      */
2456         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2457         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2458         lpfc_device_recov_unused_node,  /* DEVICE_RECOVERY */
2459
2460         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2461         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2462         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2463         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2464         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2465         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2466         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2467         lpfc_disc_illegal,              /* CMPL_PRLI       */
2468         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2469         lpfc_disc_illegal,              /* CMPL_ADISC      */
2470         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2471         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2472         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2473
2474         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2475         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2476         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2477         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2478         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2479         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2480         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2481         lpfc_disc_illegal,              /* CMPL_PRLI       */
2482         lpfc_disc_illegal,              /* CMPL_LOGO       */
2483         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2484         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2485         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2486         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2487
2488         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2489         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2490         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2491         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2492         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2493         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2494         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2495         lpfc_disc_illegal,              /* CMPL_PRLI       */
2496         lpfc_disc_illegal,              /* CMPL_LOGO       */
2497         lpfc_disc_illegal,              /* CMPL_ADISC      */
2498         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2499         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2500         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2501
2502         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2503         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2504         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2505         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2506         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2507         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2508         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2509         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2510         lpfc_disc_illegal,              /* CMPL_LOGO       */
2511         lpfc_disc_illegal,              /* CMPL_ADISC      */
2512         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2513         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2514         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2515
2516         lpfc_rcv_plogi_logo_issue,      /* RCV_PLOGI   LOGO_ISSUE     */
2517         lpfc_rcv_prli_logo_issue,       /* RCV_PRLI        */
2518         lpfc_rcv_logo_logo_issue,       /* RCV_LOGO        */
2519         lpfc_rcv_padisc_logo_issue,     /* RCV_ADISC       */
2520         lpfc_rcv_padisc_logo_issue,     /* RCV_PDISC       */
2521         lpfc_rcv_prlo_logo_issue,       /* RCV_PRLO        */
2522         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2523         lpfc_disc_illegal,              /* CMPL_PRLI       */
2524         lpfc_cmpl_logo_logo_issue,      /* CMPL_LOGO       */
2525         lpfc_disc_illegal,              /* CMPL_ADISC      */
2526         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2527         lpfc_device_rm_logo_issue,      /* DEVICE_RM       */
2528         lpfc_device_recov_logo_issue,   /* DEVICE_RECOVERY */
2529
2530         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2531         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2532         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2533         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2534         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2535         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2536         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2537         lpfc_disc_illegal,              /* CMPL_PRLI       */
2538         lpfc_disc_illegal,              /* CMPL_LOGO       */
2539         lpfc_disc_illegal,              /* CMPL_ADISC      */
2540         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2541         lpfc_disc_illegal,              /* DEVICE_RM       */
2542         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2543
2544         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2545         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2546         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2547         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2548         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2549         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2550         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2551         lpfc_disc_illegal,              /* CMPL_PRLI       */
2552         lpfc_disc_illegal,              /* CMPL_LOGO       */
2553         lpfc_disc_illegal,              /* CMPL_ADISC      */
2554         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2555         lpfc_disc_illegal,              /* DEVICE_RM       */
2556         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2557
2558         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2559         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2560         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2561         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2562         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2563         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2564         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2565         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2566         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2567         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2568         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2569         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2570         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2571 };
2572
2573 int
2574 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2575                         void *arg, uint32_t evt)
2576 {
2577         uint32_t cur_state, rc;
2578         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2579                          uint32_t);
2580         uint32_t got_ndlp = 0;
2581
2582         if (lpfc_nlp_get(ndlp))
2583                 got_ndlp = 1;
2584
2585         cur_state = ndlp->nlp_state;
2586
2587         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2588         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2589                          "0211 DSM in event x%x on NPort x%x in "
2590                          "state %d Data: x%x\n",
2591                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2592
2593         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2594                  "DSM in:          evt:%d ste:%d did:x%x",
2595                 evt, cur_state, ndlp->nlp_DID);
2596
2597         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2598         rc = (func) (vport, ndlp, arg, evt);
2599
2600         /* DSM out state <rc> on NPort <nlp_DID> */
2601         if (got_ndlp) {
2602                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2603                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2604                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2605
2606                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2607                         "DSM out:         ste:%d did:x%x flg:x%x",
2608                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2609                 /* Decrement the ndlp reference count held for this function */
2610                 lpfc_nlp_put(ndlp);
2611         } else {
2612                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2613                         "0213 DSM out state %d on NPort free\n", rc);
2614
2615                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2616                         "DSM out:         ste:%d did:x%x flg:x%x",
2617                         rc, 0, 0);
2618         }
2619
2620         return rc;
2621 }