drivers/scsi/lpfc/lpfc_els.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23 /* See Fibre Channel protocol T11 FC-LS for details */
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29
  30 #include <scsi/scsi.h>
  31 #include <scsi/scsi_device.h>
  32 #include <scsi/scsi_host.h>
  33 #include <scsi/scsi_transport_fc.h>
  34 #include <uapi/scsi/fc/fc_fs.h>
  35 #include <uapi/scsi/fc/fc_els.h>
  36
  37 #include "lpfc_hw4.h"
  38 #include "lpfc_hw.h"
  39 #include "lpfc_sli.h"
  40 #include "lpfc_sli4.h"
  41 #include "lpfc_nl.h"
  42 #include "lpfc_disc.h"
  43 #include "lpfc_scsi.h"
  44 #include "lpfc.h"
  45 #include "lpfc_logmsg.h"
  46 #include "lpfc_crtn.h"
  47 #include "lpfc_vport.h"
  48 #include "lpfc_debugfs.h"
  49
  50 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
  51                           struct lpfc_iocbq *);
  52 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
  53                         struct lpfc_iocbq *);
  54 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
  55 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
  56                                 struct lpfc_nodelist *ndlp, uint8_t retry);
  57 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
  58                                   struct lpfc_iocbq *iocb);
  59 static void lpfc_cmpl_els_edc(struct lpfc_hba *phba,
  60                               struct lpfc_iocbq *cmdiocb,
  61                               struct lpfc_iocbq *rspiocb);
  62 static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *,
  63                                struct lpfc_iocbq *);
  64
  65 static int lpfc_max_els_tries = 3;
  66
  67 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport);
  68 static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max);
  69 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid);
  70
  71 /**
  72  * lpfc_els_chk_latt - Check host link attention event for a vport
  73  * @vport: pointer to a host virtual N_Port data structure.
  74  *
  75  * This routine checks whether there is an outstanding host link
  76  * attention event during the discovery process with the @vport. It is done
  77  * by reading the HBA's Host Attention (HA) register. If there is any host
  78  * link attention events during this @vport's discovery process, the @vport
  79  * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
  80  * be issued if the link state is not already in host link cleared state,
  81  * and a return code shall indicate whether the host link attention event
  82  * had happened.
  83  *
  84  * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
  85  * state in LPFC_VPORT_READY, the request for checking host link attention
  86  * event will be ignored and a return code shall indicate no host link
  87  * attention event had happened.
  88  *
  89  * Return codes
  90  *   0 - no host link attention event happened
  91  *   1 - host link attention event happened
  92  **/
  93 int
  94 lpfc_els_chk_latt(struct lpfc_vport *vport)
  95 {
  96         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
  97         struct lpfc_hba  *phba = vport->phba;
  98         uint32_t ha_copy;
  99
 100         if (vport->port_state >= LPFC_VPORT_READY ||
 101             phba->link_state == LPFC_LINK_DOWN ||
 102             phba->sli_rev > LPFC_SLI_REV3)
 103                 return 0;
 104
 105         /* Read the HBA Host Attention Register */
 106         if (lpfc_readl(phba->HAregaddr, &ha_copy))
 107                 return 1;
 108
 109         if (!(ha_copy & HA_LATT))
 110                 return 0;
 111
 112         /* Pending Link Event during Discovery */
 113         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 114                          "0237 Pending Link Event during "
 115                          "Discovery: State x%x\n",
 116                          phba->pport->port_state);
 117
 118         /* CLEAR_LA should re-enable link attention events and
 119          * we should then immediately take a LATT event. The
 120          * LATT processing should call lpfc_linkdown() which
 121          * will cleanup any left over in-progress discovery
 122          * events.
 123          */
 124         spin_lock_irq(shost->host_lock);
 125         vport->fc_flag |= FC_ABORT_DISCOVERY;
 126         spin_unlock_irq(shost->host_lock);
 127
 128         if (phba->link_state != LPFC_CLEAR_LA)
 129                 lpfc_issue_clear_la(phba, vport);
 130
 131         return 1;
 132 }
 133
 134 /**
 135  * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
 136  * @vport: pointer to a host virtual N_Port data structure.
 137  * @expect_rsp: flag indicating whether response is expected.
 138  * @cmd_size: size of the ELS command.
 139  * @retry: number of retries to the command when it fails.
 140  * @ndlp: pointer to a node-list data structure.
 141  * @did: destination identifier.
 142  * @elscmd: the ELS command code.
 143  *
 144  * This routine is used for allocating a lpfc-IOCB data structure from
 145  * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
 146  * passed into the routine for discovery state machine to issue an Extended
 147  * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
 148  * and preparation routine that is used by all the discovery state machine
 149  * routines and the ELS command-specific fields will be later set up by
 150  * the individual discovery machine routines after calling this routine
 151  * allocating and preparing a generic IOCB data structure. It fills in the
 152  * Buffer Descriptor Entries (BDEs), allocates buffers for both command
 153  * payload and response payload (if expected). The reference count on the
 154  * ndlp is incremented by 1 and the reference to the ndlp is put into
 155  * ndlp of the IOCB data structure for this IOCB to hold the ndlp
 156  * reference for the command's callback function to access later.
 157  *
 158  * Return code
 159  *   Pointer to the newly allocated/prepared els iocb data structure
 160  *   NULL - when els iocb data structure allocation/preparation failed
 161  **/
 162 struct lpfc_iocbq *
 163 lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp,
 164                    u16 cmd_size, u8 retry,
 165                    struct lpfc_nodelist *ndlp, u32 did,
 166                    u32 elscmd)
 167 {
 168         struct lpfc_hba  *phba = vport->phba;
 169         struct lpfc_iocbq *elsiocb;
 170         struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp;
 171         struct ulp_bde64_le *bpl;
 172         u32 timeout = 0;
 173
 174         if (!lpfc_is_link_up(phba))
 175                 return NULL;
 176
 177         /* Allocate buffer for  command iocb */
 178         elsiocb = lpfc_sli_get_iocbq(phba);
 179         if (!elsiocb)
 180                 return NULL;
 181
 182         /*
 183          * If this command is for fabric controller and HBA running
 184          * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
 185          */
 186         if ((did == Fabric_DID) &&
 187             (phba->hba_flag & HBA_FIP_SUPPORT) &&
 188             ((elscmd == ELS_CMD_FLOGI) ||
 189              (elscmd == ELS_CMD_FDISC) ||
 190              (elscmd == ELS_CMD_LOGO)))
 191                 switch (elscmd) {
 192                 case ELS_CMD_FLOGI:
 193                         elsiocb->cmd_flag |=
 194                                 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
 195                                  & LPFC_FIP_ELS_ID_MASK);
 196                         break;
 197                 case ELS_CMD_FDISC:
 198                         elsiocb->cmd_flag |=
 199                                 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
 200                                  & LPFC_FIP_ELS_ID_MASK);
 201                         break;
 202                 case ELS_CMD_LOGO:
 203                         elsiocb->cmd_flag |=
 204                                 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
 205                                  & LPFC_FIP_ELS_ID_MASK);
 206                         break;
 207                 }
 208         else
 209                 elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
 210
 211         /* fill in BDEs for command */
 212         /* Allocate buffer for command payload */
 213         pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
 214         if (pcmd)
 215                 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
 216         if (!pcmd || !pcmd->virt)
 217                 goto els_iocb_free_pcmb_exit;
 218
 219         INIT_LIST_HEAD(&pcmd->list);
 220
 221         /* Allocate buffer for response payload */
 222         if (expect_rsp) {
 223                 prsp = kmalloc(sizeof(*prsp), GFP_KERNEL);
 224                 if (prsp)
 225                         prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
 226                                                      &prsp->phys);
 227                 if (!prsp || !prsp->virt)
 228                         goto els_iocb_free_prsp_exit;
 229                 INIT_LIST_HEAD(&prsp->list);
 230         } else {
 231                 prsp = NULL;
 232         }
 233
 234         /* Allocate buffer for Buffer ptr list */
 235         pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL);
 236         if (pbuflist)
 237                 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
 238                                                  &pbuflist->phys);
 239         if (!pbuflist || !pbuflist->virt)
 240                 goto els_iocb_free_pbuf_exit;
 241
 242         INIT_LIST_HEAD(&pbuflist->list);
 243
 244         if (expect_rsp) {
 245                 switch (elscmd) {
 246                 case ELS_CMD_FLOGI:
 247                         timeout = FF_DEF_RATOV * 2;
 248                         break;
 249                 case ELS_CMD_LOGO:
 250                         timeout = phba->fc_ratov;
 251                         break;
 252                 default:
 253                         timeout = phba->fc_ratov * 2;
 254                 }
 255
 256                 /* Fill SGE for the num bde count */
 257                 elsiocb->num_bdes = 2;
 258         }
 259
 260         if (phba->sli_rev == LPFC_SLI_REV4)
 261                 bmp = pcmd;
 262         else
 263                 bmp = pbuflist;
 264
 265         lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did,
 266                                   elscmd, timeout, expect_rsp);
 267
 268         bpl = (struct ulp_bde64_le *)pbuflist->virt;
 269         bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys));
 270         bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys));
 271         bpl->type_size = cpu_to_le32(cmd_size);
 272         bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 273
 274         if (expect_rsp) {
 275                 bpl++;
 276                 bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys));
 277                 bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys));
 278                 bpl->type_size = cpu_to_le32(FCELSSIZE);
 279                 bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 280         }
 281
 282         elsiocb->cmd_dmabuf = pcmd;
 283         elsiocb->bpl_dmabuf = pbuflist;
 284         elsiocb->retry = retry;
 285         elsiocb->vport = vport;
 286         elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
 287
 288         if (prsp)
 289                 list_add(&prsp->list, &pcmd->list);
 290         if (expect_rsp) {
 291                 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
 292                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 293                                  "0116 Xmit ELS command x%x to remote "
 294                                  "NPORT x%x I/O tag: x%x, port state:x%x "
 295                                  "rpi x%x fc_flag:x%x\n",
 296                                  elscmd, did, elsiocb->iotag,
 297                                  vport->port_state, ndlp->nlp_rpi,
 298                                  vport->fc_flag);
 299         } else {
 300                 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
 301                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 302                                  "0117 Xmit ELS response x%x to remote "
 303                                  "NPORT x%x I/O tag: x%x, size: x%x "
 304                                  "port_state x%x  rpi x%x fc_flag x%x\n",
 305                                  elscmd, ndlp->nlp_DID, elsiocb->iotag,
 306                                  cmd_size, vport->port_state,
 307                                  ndlp->nlp_rpi, vport->fc_flag);
 308         }
 309
 310         return elsiocb;
 311
 312 els_iocb_free_pbuf_exit:
 313         if (expect_rsp)
 314                 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
 315         kfree(pbuflist);
 316
 317 els_iocb_free_prsp_exit:
 318         lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
 319         kfree(prsp);
 320
 321 els_iocb_free_pcmb_exit:
 322         kfree(pcmd);
 323         lpfc_sli_release_iocbq(phba, elsiocb);
 324         return NULL;
 325 }
 326
 327 /**
 328  * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
 329  * @vport: pointer to a host virtual N_Port data structure.
 330  *
 331  * This routine issues a fabric registration login for a @vport. An
 332  * active ndlp node with Fabric_DID must already exist for this @vport.
 333  * The routine invokes two mailbox commands to carry out fabric registration
 334  * login through the HBA firmware: the first mailbox command requests the
 335  * HBA to perform link configuration for the @vport; and the second mailbox
 336  * command requests the HBA to perform the actual fabric registration login
 337  * with the @vport.
 338  *
 339  * Return code
 340  *   0 - successfully issued fabric registration login for @vport
 341  *   -ENXIO -- failed to issue fabric registration login for @vport
 342  **/
 343 int
 344 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
 345 {
 346         struct lpfc_hba  *phba = vport->phba;
 347         LPFC_MBOXQ_t *mbox;
 348         struct lpfc_nodelist *ndlp;
 349         struct serv_parm *sp;
 350         int rc;
 351         int err = 0;
 352
 353         sp = &phba->fc_fabparam;
 354         ndlp = lpfc_findnode_did(vport, Fabric_DID);
 355         if (!ndlp) {
 356                 err = 1;
 357                 goto fail;
 358         }
 359
 360         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 361         if (!mbox) {
 362                 err = 2;
 363                 goto fail;
 364         }
 365
 366         vport->port_state = LPFC_FABRIC_CFG_LINK;
 367         lpfc_config_link(phba, mbox);
 368         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 369         mbox->vport = vport;
 370
 371         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 372         if (rc == MBX_NOT_FINISHED) {
 373                 err = 3;
 374                 goto fail_free_mbox;
 375         }
 376
 377         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 378         if (!mbox) {
 379                 err = 4;
 380                 goto fail;
 381         }
 382         rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
 383                           ndlp->nlp_rpi);
 384         if (rc) {
 385                 err = 5;
 386                 goto fail_free_mbox;
 387         }
 388
 389         mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
 390         mbox->vport = vport;
 391         /* increment the reference count on ndlp to hold reference
 392          * for the callback routine.
 393          */
 394         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
 395         if (!mbox->ctx_ndlp) {
 396                 err = 6;
 397                 goto fail_free_mbox;
 398         }
 399
 400         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 401         if (rc == MBX_NOT_FINISHED) {
 402                 err = 7;
 403                 goto fail_issue_reg_login;
 404         }
 405
 406         return 0;
 407
 408 fail_issue_reg_login:
 409         /* decrement the reference count on ndlp just incremented
 410          * for the failed mbox command.
 411          */
 412         lpfc_nlp_put(ndlp);
 413 fail_free_mbox:
 414         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
 415 fail:
 416         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 417         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 418                          "0249 Cannot issue Register Fabric login: Err %d\n",
 419                          err);
 420         return -ENXIO;
 421 }
 422
 423 /**
 424  * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
 425  * @vport: pointer to a host virtual N_Port data structure.
 426  *
 427  * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
 428  * the @vport. This mailbox command is necessary for SLI4 port only.
 429  *
 430  * Return code
 431  *   0 - successfully issued REG_VFI for @vport
 432  *   A failure code otherwise.
 433  **/
 434 int
 435 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
 436 {
 437         struct lpfc_hba  *phba = vport->phba;
 438         LPFC_MBOXQ_t *mboxq = NULL;
 439         struct lpfc_nodelist *ndlp;
 440         struct lpfc_dmabuf *dmabuf = NULL;
 441         int rc = 0;
 442
 443         /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
 444         if ((phba->sli_rev == LPFC_SLI_REV4) &&
 445             !(phba->link_flag & LS_LOOPBACK_MODE) &&
 446             !(vport->fc_flag & FC_PT2PT)) {
 447                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
 448                 if (!ndlp) {
 449                         rc = -ENODEV;
 450                         goto fail;
 451                 }
 452         }
 453
 454         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 455         if (!mboxq) {
 456                 rc = -ENOMEM;
 457                 goto fail;
 458         }
 459
 460         /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
 461         if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) {
 462                 rc = lpfc_mbox_rsrc_prep(phba, mboxq);
 463                 if (rc) {
 464                         rc = -ENOMEM;
 465                         goto fail_mbox;
 466                 }
 467                 dmabuf = mboxq->ctx_buf;
 468                 memcpy(dmabuf->virt, &phba->fc_fabparam,
 469                        sizeof(struct serv_parm));
 470         }
 471
 472         vport->port_state = LPFC_FABRIC_CFG_LINK;
 473         if (dmabuf) {
 474                 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
 475                 /* lpfc_reg_vfi memsets the mailbox.  Restore the ctx_buf. */
 476                 mboxq->ctx_buf = dmabuf;
 477         } else {
 478                 lpfc_reg_vfi(mboxq, vport, 0);
 479         }
 480
 481         mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
 482         mboxq->vport = vport;
 483         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
 484         if (rc == MBX_NOT_FINISHED) {
 485                 rc = -ENXIO;
 486                 goto fail_mbox;
 487         }
 488         return 0;
 489
 490 fail_mbox:
 491         lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
 492 fail:
 493         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
 494         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 495                          "0289 Issue Register VFI failed: Err %d\n", rc);
 496         return rc;
 497 }
 498
 499 /**
 500  * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
 501  * @vport: pointer to a host virtual N_Port data structure.
 502  *
 503  * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
 504  * the @vport. This mailbox command is necessary for SLI4 port only.
 505  *
 506  * Return code
 507  *   0 - successfully issued REG_VFI for @vport
 508  *   A failure code otherwise.
 509  **/
 510 int
 511 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
 512 {
 513         struct lpfc_hba *phba = vport->phba;
 514         struct Scsi_Host *shost;
 515         LPFC_MBOXQ_t *mboxq;
 516         int rc;
 517
 518         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 519         if (!mboxq) {
 520                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 521                                 "2556 UNREG_VFI mbox allocation failed"
 522                                 "HBA state x%x\n", phba->pport->port_state);
 523                 return -ENOMEM;
 524         }
 525
 526         lpfc_unreg_vfi(mboxq, vport);
 527         mboxq->vport = vport;
 528         mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
 529
 530         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
 531         if (rc == MBX_NOT_FINISHED) {
 532                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 533                                 "2557 UNREG_VFI issue mbox failed rc x%x "
 534                                 "HBA state x%x\n",
 535                                 rc, phba->pport->port_state);
 536                 mempool_free(mboxq, phba->mbox_mem_pool);
 537                 return -EIO;
 538         }
 539
 540         shost = lpfc_shost_from_vport(vport);
 541         spin_lock_irq(shost->host_lock);
 542         vport->fc_flag &= ~FC_VFI_REGISTERED;
 543         spin_unlock_irq(shost->host_lock);
 544         return 0;
 545 }
 546
 547 /**
 548  * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
 549  * @vport: pointer to a host virtual N_Port data structure.
 550  * @sp: pointer to service parameter data structure.
 551  *
 552  * This routine is called from FLOGI/FDISC completion handler functions.
 553  * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
 554  * node nodename is changed in the completion service parameter else return
 555  * 0. This function also set flag in the vport data structure to delay
 556  * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
 557  * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
 558  * node nodename is changed in the completion service parameter.
 559  *
 560  * Return code
 561  *   0 - FCID and Fabric Nodename and Fabric portname is not changed.
 562  *   1 - FCID or Fabric Nodename or Fabric portname is changed.
 563  *
 564  **/
 565 static uint8_t
 566 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
 567                 struct serv_parm *sp)
 568 {
 569         struct lpfc_hba *phba = vport->phba;
 570         uint8_t fabric_param_changed = 0;
 571         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 572
 573         if ((vport->fc_prevDID != vport->fc_myDID) ||
 574                 memcmp(&vport->fabric_portname, &sp->portName,
 575                         sizeof(struct lpfc_name)) ||
 576                 memcmp(&vport->fabric_nodename, &sp->nodeName,
 577                         sizeof(struct lpfc_name)) ||
 578                 (vport->vport_flag & FAWWPN_PARAM_CHG)) {
 579                 fabric_param_changed = 1;
 580                 vport->vport_flag &= ~FAWWPN_PARAM_CHG;
 581         }
 582         /*
 583          * Word 1 Bit 31 in common service parameter is overloaded.
 584          * Word 1 Bit 31 in FLOGI request is multiple NPort request
 585          * Word 1 Bit 31 in FLOGI response is clean address bit
 586          *
 587          * If fabric parameter is changed and clean address bit is
 588          * cleared delay nport discovery if
 589          * - vport->fc_prevDID != 0 (not initial discovery) OR
 590          * - lpfc_delay_discovery module parameter is set.
 591          */
 592         if (fabric_param_changed && !sp->cmn.clean_address_bit &&
 593             (vport->fc_prevDID || phba->cfg_delay_discovery)) {
 594                 spin_lock_irq(shost->host_lock);
 595                 vport->fc_flag |= FC_DISC_DELAYED;
 596                 spin_unlock_irq(shost->host_lock);
 597         }
 598
 599         return fabric_param_changed;
 600 }
 601
 602
 603 /**
 604  * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
 605  * @vport: pointer to a host virtual N_Port data structure.
 606  * @ndlp: pointer to a node-list data structure.
 607  * @sp: pointer to service parameter data structure.
 608  * @ulp_word4: command response value
 609  *
 610  * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 611  * function to handle the completion of a Fabric Login (FLOGI) into a fabric
 612  * port in a fabric topology. It properly sets up the parameters to the @ndlp
 613  * from the IOCB response. It also check the newly assigned N_Port ID to the
 614  * @vport against the previously assigned N_Port ID. If it is different from
 615  * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
 616  * is invoked on all the remaining nodes with the @vport to unregister the
 617  * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
 618  * is invoked to register login to the fabric.
 619  *
 620  * Return code
 621  *   0 - Success (currently, always return 0)
 622  **/
 623 static int
 624 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 625                            struct serv_parm *sp, uint32_t ulp_word4)
 626 {
 627         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 628         struct lpfc_hba  *phba = vport->phba;
 629         struct lpfc_nodelist *np;
 630         struct lpfc_nodelist *next_np;
 631         uint8_t fabric_param_changed;
 632
 633         spin_lock_irq(shost->host_lock);
 634         vport->fc_flag |= FC_FABRIC;
 635         spin_unlock_irq(shost->host_lock);
 636
 637         phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
 638         if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
 639                 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
 640
 641         phba->fc_edtovResol = sp->cmn.edtovResolution;
 642         phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
 643
 644         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
 645                 spin_lock_irq(shost->host_lock);
 646                 vport->fc_flag |= FC_PUBLIC_LOOP;
 647                 spin_unlock_irq(shost->host_lock);
 648         }
 649
 650         vport->fc_myDID = ulp_word4 & Mask_DID;
 651         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
 652         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
 653         ndlp->nlp_class_sup = 0;
 654         if (sp->cls1.classValid)
 655                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
 656         if (sp->cls2.classValid)
 657                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
 658         if (sp->cls3.classValid)
 659                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
 660         if (sp->cls4.classValid)
 661                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
 662         ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 663                                 sp->cmn.bbRcvSizeLsb;
 664
 665         fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
 666         if (fabric_param_changed) {
 667                 /* Reset FDMI attribute masks based on config parameter */
 668                 if (phba->cfg_enable_SmartSAN ||
 669                     (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
 670                         /* Setup appropriate attribute masks */
 671                         vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
 672                         if (phba->cfg_enable_SmartSAN)
 673                                 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
 674                         else
 675                                 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
 676                 } else {
 677                         vport->fdmi_hba_mask = 0;
 678                         vport->fdmi_port_mask = 0;
 679                 }
 680
 681         }
 682         memcpy(&vport->fabric_portname, &sp->portName,
 683                         sizeof(struct lpfc_name));
 684         memcpy(&vport->fabric_nodename, &sp->nodeName,
 685                         sizeof(struct lpfc_name));
 686         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 687
 688         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
 689                 if (sp->cmn.response_multiple_NPort) {
 690                         lpfc_printf_vlog(vport, KERN_WARNING,
 691                                          LOG_ELS | LOG_VPORT,
 692                                          "1816 FLOGI NPIV supported, "
 693                                          "response data 0x%x\n",
 694                                          sp->cmn.response_multiple_NPort);
 695                         spin_lock_irq(&phba->hbalock);
 696                         phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
 697                         spin_unlock_irq(&phba->hbalock);
 698                 } else {
 699                         /* Because we asked f/w for NPIV it still expects us
 700                         to call reg_vnpid at least for the physical host */
 701                         lpfc_printf_vlog(vport, KERN_WARNING,
 702                                          LOG_ELS | LOG_VPORT,
 703                                          "1817 Fabric does not support NPIV "
 704                                          "- configuring single port mode.\n");
 705                         spin_lock_irq(&phba->hbalock);
 706                         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 707                         spin_unlock_irq(&phba->hbalock);
 708                 }
 709         }
 710
 711         /*
 712          * For FC we need to do some special processing because of the SLI
 713          * Port's default settings of the Common Service Parameters.
 714          */
 715         if ((phba->sli_rev == LPFC_SLI_REV4) &&
 716             (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
 717                 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
 718                 if (fabric_param_changed)
 719                         lpfc_unregister_fcf_prep(phba);
 720
 721                 /* This should just update the VFI CSPs*/
 722                 if (vport->fc_flag & FC_VFI_REGISTERED)
 723                         lpfc_issue_reg_vfi(vport);
 724         }
 725
 726         if (fabric_param_changed &&
 727                 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
 728
 729                 /* If our NportID changed, we need to ensure all
 730                  * remaining NPORTs get unreg_login'ed.
 731                  */
 732                 list_for_each_entry_safe(np, next_np,
 733                                         &vport->fc_nodes, nlp_listp) {
 734                         if ((np->nlp_state != NLP_STE_NPR_NODE) ||
 735                                    !(np->nlp_flag & NLP_NPR_ADISC))
 736                                 continue;
 737                         spin_lock_irq(&np->lock);
 738                         np->nlp_flag &= ~NLP_NPR_ADISC;
 739                         spin_unlock_irq(&np->lock);
 740                         lpfc_unreg_rpi(vport, np);
 741                 }
 742                 lpfc_cleanup_pending_mbox(vport);
 743
 744                 if (phba->sli_rev == LPFC_SLI_REV4) {
 745                         lpfc_sli4_unreg_all_rpis(vport);
 746                         lpfc_mbx_unreg_vpi(vport);
 747                         spin_lock_irq(shost->host_lock);
 748                         vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
 749                         spin_unlock_irq(shost->host_lock);
 750                 }
 751
 752                 /*
 753                  * For SLI3 and SLI4, the VPI needs to be reregistered in
 754                  * response to this fabric parameter change event.
 755                  */
 756                 spin_lock_irq(shost->host_lock);
 757                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 758                 spin_unlock_irq(shost->host_lock);
 759         } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
 760                 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
 761                         /*
 762                          * Driver needs to re-reg VPI in order for f/w
 763                          * to update the MAC address.
 764                          */
 765                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 766                         lpfc_register_new_vport(phba, vport, ndlp);
 767                         return 0;
 768         }
 769
 770         if (phba->sli_rev < LPFC_SLI_REV4) {
 771                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 772                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
 773                     vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
 774                         lpfc_register_new_vport(phba, vport, ndlp);
 775                 else
 776                         lpfc_issue_fabric_reglogin(vport);
 777         } else {
 778                 ndlp->nlp_type |= NLP_FABRIC;
 779                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 780                 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
 781                         (vport->vpi_state & LPFC_VPI_REGISTERED)) {
 782                         lpfc_start_fdiscs(phba);
 783                         lpfc_do_scr_ns_plogi(phba, vport);
 784                 } else if (vport->fc_flag & FC_VFI_REGISTERED)
 785                         lpfc_issue_init_vpi(vport);
 786                 else {
 787                         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 788                                         "3135 Need register VFI: (x%x/%x)\n",
 789                                         vport->fc_prevDID, vport->fc_myDID);
 790                         lpfc_issue_reg_vfi(vport);
 791                 }
 792         }
 793         return 0;
 794 }
 795
 796 /**
 797  * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
 798  * @vport: pointer to a host virtual N_Port data structure.
 799  * @ndlp: pointer to a node-list data structure.
 800  * @sp: pointer to service parameter data structure.
 801  *
 802  * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 803  * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
 804  * in a point-to-point topology. First, the @vport's N_Port Name is compared
 805  * with the received N_Port Name: if the @vport's N_Port Name is greater than
 806  * the received N_Port Name lexicographically, this node shall assign local
 807  * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
 808  * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
 809  * this node shall just wait for the remote node to issue PLOGI and assign
 810  * N_Port IDs.
 811  *
 812  * Return code
 813  *   0 - Success
 814  *   -ENXIO - Fail
 815  **/
 816 static int
 817 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 818                           struct serv_parm *sp)
 819 {
 820         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 821         struct lpfc_hba  *phba = vport->phba;
 822         LPFC_MBOXQ_t *mbox;
 823         int rc;
 824
 825         spin_lock_irq(shost->host_lock);
 826         vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 827         vport->fc_flag |= FC_PT2PT;
 828         spin_unlock_irq(shost->host_lock);
 829
 830         /* If we are pt2pt with another NPort, force NPIV off! */
 831         phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 832
 833         /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
 834         if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
 835                 lpfc_unregister_fcf_prep(phba);
 836
 837                 spin_lock_irq(shost->host_lock);
 838                 vport->fc_flag &= ~FC_VFI_REGISTERED;
 839                 spin_unlock_irq(shost->host_lock);
 840                 phba->fc_topology_changed = 0;
 841         }
 842
 843         rc = memcmp(&vport->fc_portname, &sp->portName,
 844                     sizeof(vport->fc_portname));
 845
 846         if (rc >= 0) {
 847                 /* This side will initiate the PLOGI */
 848                 spin_lock_irq(shost->host_lock);
 849                 vport->fc_flag |= FC_PT2PT_PLOGI;
 850                 spin_unlock_irq(shost->host_lock);
 851
 852                 /*
 853                  * N_Port ID cannot be 0, set our Id to LocalID
 854                  * the other side will be RemoteID.
 855                  */
 856
 857                 /* not equal */
 858                 if (rc)
 859                         vport->fc_myDID = PT2PT_LocalID;
 860
 861                 /* If not registered with a transport, decrement ndlp reference
 862                  * count indicating that ndlp can be safely released when other
 863                  * references are removed.
 864                  */
 865                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
 866                         lpfc_nlp_put(ndlp);
 867
 868                 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
 869                 if (!ndlp) {
 870                         /*
 871                          * Cannot find existing Fabric ndlp, so allocate a
 872                          * new one
 873                          */
 874                         ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
 875                         if (!ndlp)
 876                                 goto fail;
 877                 }
 878
 879                 memcpy(&ndlp->nlp_portname, &sp->portName,
 880                        sizeof(struct lpfc_name));
 881                 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
 882                        sizeof(struct lpfc_name));
 883                 /* Set state will put ndlp onto node list if not already done */
 884                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 885                 spin_lock_irq(&ndlp->lock);
 886                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
 887                 spin_unlock_irq(&ndlp->lock);
 888
 889                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 890                 if (!mbox)
 891                         goto fail;
 892
 893                 lpfc_config_link(phba, mbox);
 894
 895                 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
 896                 mbox->vport = vport;
 897                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 898                 if (rc == MBX_NOT_FINISHED) {
 899                         mempool_free(mbox, phba->mbox_mem_pool);
 900                         goto fail;
 901                 }
 902         } else {
 903                 /* This side will wait for the PLOGI. If not registered with
 904                  * a transport, decrement node reference count indicating that
 905                  * ndlp can be released when other references are removed.
 906                  */
 907                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
 908                         lpfc_nlp_put(ndlp);
 909
 910                 /* Start discovery - this should just do CLEAR_LA */
 911                 lpfc_disc_start(vport);
 912         }
 913
 914         return 0;
 915 fail:
 916         return -ENXIO;
 917 }
 918
 919 /**
 920  * lpfc_cmpl_els_flogi - Completion callback function for flogi
 921  * @phba: pointer to lpfc hba data structure.
 922  * @cmdiocb: pointer to lpfc command iocb data structure.
 923  * @rspiocb: pointer to lpfc response iocb data structure.
 924  *
 925  * This routine is the top-level completion callback function for issuing
 926  * a Fabric Login (FLOGI) command. If the response IOCB reported error,
 927  * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
 928  * retry has been made (either immediately or delayed with lpfc_els_retry()
 929  * returning 1), the command IOCB will be released and function returned.
 930  * If the retry attempt has been given up (possibly reach the maximum
 931  * number of retries), one additional decrement of ndlp reference shall be
 932  * invoked before going out after releasing the command IOCB. This will
 933  * actually release the remote node (Note, lpfc_els_free_iocb() will also
 934  * invoke one decrement of ndlp reference count). If no error reported in
 935  * the IOCB status, the command Port ID field is used to determine whether
 936  * this is a point-to-point topology or a fabric topology: if the Port ID
 937  * field is assigned, it is a fabric topology; otherwise, it is a
 938  * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
 939  * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
 940  * specific topology completion conditions.
 941  **/
 942 static void
 943 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 944                     struct lpfc_iocbq *rspiocb)
 945 {
 946         struct lpfc_vport *vport = cmdiocb->vport;
 947         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 948         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
 949         IOCB_t *irsp;
 950         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
 951         struct serv_parm *sp;
 952         uint16_t fcf_index;
 953         int rc;
 954         u32 ulp_status, ulp_word4, tmo;
 955
 956         /* Check to see if link went down during discovery */
 957         if (lpfc_els_chk_latt(vport)) {
 958                 /* One additional decrement on node reference count to
 959                  * trigger the release of the node
 960                  */
 961                 if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
 962                         lpfc_nlp_put(ndlp);
 963                 goto out;
 964         }
 965
 966         ulp_status = get_job_ulpstatus(phba, rspiocb);
 967         ulp_word4 = get_job_word4(phba, rspiocb);
 968
 969         if (phba->sli_rev == LPFC_SLI_REV4) {
 970                 tmo = get_wqe_tmo(cmdiocb);
 971         } else {
 972                 irsp = &rspiocb->iocb;
 973                 tmo = irsp->ulpTimeout;
 974         }
 975
 976         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 977                 "FLOGI cmpl:      status:x%x/x%x state:x%x",
 978                 ulp_status, ulp_word4,
 979                 vport->port_state);
 980
 981         if (ulp_status) {
 982                 /*
 983                  * In case of FIP mode, perform roundrobin FCF failover
 984                  * due to new FCF discovery
 985                  */
 986                 if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
 987                     (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
 988                         if (phba->link_state < LPFC_LINK_UP)
 989                                 goto stop_rr_fcf_flogi;
 990                         if ((phba->fcoe_cvl_eventtag_attn ==
 991                              phba->fcoe_cvl_eventtag) &&
 992                             (ulp_status == IOSTAT_LOCAL_REJECT) &&
 993                             ((ulp_word4 & IOERR_PARAM_MASK) ==
 994                             IOERR_SLI_ABORTED))
 995                                 goto stop_rr_fcf_flogi;
 996                         else
 997                                 phba->fcoe_cvl_eventtag_attn =
 998                                         phba->fcoe_cvl_eventtag;
 999                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1000                                         "2611 FLOGI failed on FCF (x%x), "
1001                                         "status:x%x/x%x, tmo:x%x, perform "
1002                                         "roundrobin FCF failover\n",
1003                                         phba->fcf.current_rec.fcf_indx,
1004                                         ulp_status, ulp_word4, tmo);
1005                         lpfc_sli4_set_fcf_flogi_fail(phba,
1006                                         phba->fcf.current_rec.fcf_indx);
1007                         fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
1008                         rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
1009                         if (rc)
1010                                 goto out;
1011                 }
1012
1013 stop_rr_fcf_flogi:
1014                 /* FLOGI failure */
1015                 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
1016                       ((ulp_word4 & IOERR_PARAM_MASK) ==
1017                                         IOERR_LOOP_OPEN_FAILURE)))
1018                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1019                                          "2858 FLOGI failure Status:x%x/x%x TMO"
1020                                          ":x%x Data x%x x%x\n",
1021                                          ulp_status, ulp_word4, tmo,
1022                                          phba->hba_flag, phba->fcf.fcf_flag);
1023
1024                 /* Check for retry */
1025                 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
1026                         goto out;
1027
1028                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_TRACE_EVENT,
1029                                  "0150 FLOGI failure Status:x%x/x%x "
1030                                  "xri x%x TMO:x%x refcnt %d\n",
1031                                  ulp_status, ulp_word4, cmdiocb->sli4_xritag,
1032                                  tmo, kref_read(&ndlp->kref));
1033
1034                 /* If this is not a loop open failure, bail out */
1035                 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
1036                       ((ulp_word4 & IOERR_PARAM_MASK) ==
1037                                         IOERR_LOOP_OPEN_FAILURE))) {
1038                         /* FLOGI failure */
1039                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1040                                          "0100 FLOGI failure Status:x%x/x%x "
1041                                          "TMO:x%x\n",
1042                                          ulp_status, ulp_word4, tmo);
1043                         goto flogifail;
1044                 }
1045
1046                 /* FLOGI failed, so there is no fabric */
1047                 spin_lock_irq(shost->host_lock);
1048                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP |
1049                                     FC_PT2PT_NO_NVME);
1050                 spin_unlock_irq(shost->host_lock);
1051
1052                 /* If private loop, then allow max outstanding els to be
1053                  * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1054                  * alpa map would take too long otherwise.
1055                  */
1056                 if (phba->alpa_map[0] == 0)
1057                         vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1058                 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1059                     (!(vport->fc_flag & FC_VFI_REGISTERED) ||
1060                      (vport->fc_prevDID != vport->fc_myDID) ||
1061                         phba->fc_topology_changed)) {
1062                         if (vport->fc_flag & FC_VFI_REGISTERED) {
1063                                 if (phba->fc_topology_changed) {
1064                                         lpfc_unregister_fcf_prep(phba);
1065                                         spin_lock_irq(shost->host_lock);
1066                                         vport->fc_flag &= ~FC_VFI_REGISTERED;
1067                                         spin_unlock_irq(shost->host_lock);
1068                                         phba->fc_topology_changed = 0;
1069                                 } else {
1070                                         lpfc_sli4_unreg_all_rpis(vport);
1071                                 }
1072                         }
1073
1074                         /* Do not register VFI if the driver aborted FLOGI */
1075                         if (!lpfc_error_lost_link(ulp_status, ulp_word4))
1076                                 lpfc_issue_reg_vfi(vport);
1077
1078                         lpfc_nlp_put(ndlp);
1079                         goto out;
1080                 }
1081                 goto flogifail;
1082         }
1083         spin_lock_irq(shost->host_lock);
1084         vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
1085         vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
1086         spin_unlock_irq(shost->host_lock);
1087
1088         /*
1089          * The FLogI succeeded.  Sync the data for the CPU before
1090          * accessing it.
1091          */
1092         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1093         if (!prsp)
1094                 goto out;
1095         sp = prsp->virt + sizeof(uint32_t);
1096
1097         /* FLOGI completes successfully */
1098         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1099                          "0101 FLOGI completes successfully, I/O tag:x%x "
1100                          "xri x%x Data: x%x x%x x%x x%x x%x x%x x%x %d\n",
1101                          cmdiocb->iotag, cmdiocb->sli4_xritag,
1102                          ulp_word4, sp->cmn.e_d_tov,
1103                          sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
1104                          vport->port_state, vport->fc_flag,
1105                          sp->cmn.priority_tagging, kref_read(&ndlp->kref));
1106
1107         if (sp->cmn.priority_tagging)
1108                 vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
1109                                                   LPFC_VMID_TYPE_PRIO);
1110
1111         if (vport->port_state == LPFC_FLOGI) {
1112                 /*
1113                  * If Common Service Parameters indicate Nport
1114                  * we are point to point, if Fport we are Fabric.
1115                  */
1116                 if (sp->cmn.fPort)
1117                         rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp,
1118                                                         ulp_word4);
1119                 else if (!(phba->hba_flag & HBA_FCOE_MODE))
1120                         rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1121                 else {
1122                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1123                                 "2831 FLOGI response with cleared Fabric "
1124                                 "bit fcf_index 0x%x "
1125                                 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1126                                 "Fabric Name "
1127                                 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1128                                 phba->fcf.current_rec.fcf_indx,
1129                                 phba->fcf.current_rec.switch_name[0],
1130                                 phba->fcf.current_rec.switch_name[1],
1131                                 phba->fcf.current_rec.switch_name[2],
1132                                 phba->fcf.current_rec.switch_name[3],
1133                                 phba->fcf.current_rec.switch_name[4],
1134                                 phba->fcf.current_rec.switch_name[5],
1135                                 phba->fcf.current_rec.switch_name[6],
1136                                 phba->fcf.current_rec.switch_name[7],
1137                                 phba->fcf.current_rec.fabric_name[0],
1138                                 phba->fcf.current_rec.fabric_name[1],
1139                                 phba->fcf.current_rec.fabric_name[2],
1140                                 phba->fcf.current_rec.fabric_name[3],
1141                                 phba->fcf.current_rec.fabric_name[4],
1142                                 phba->fcf.current_rec.fabric_name[5],
1143                                 phba->fcf.current_rec.fabric_name[6],
1144                                 phba->fcf.current_rec.fabric_name[7]);
1145
1146                         lpfc_nlp_put(ndlp);
1147                         spin_lock_irq(&phba->hbalock);
1148                         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1149                         phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1150                         spin_unlock_irq(&phba->hbalock);
1151                         phba->fcf.fcf_redisc_attempted = 0; /* reset */
1152                         goto out;
1153                 }
1154                 if (!rc) {
1155                         /* Mark the FCF discovery process done */
1156                         if (phba->hba_flag & HBA_FIP_SUPPORT)
1157                                 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
1158                                                 LOG_ELS,
1159                                                 "2769 FLOGI to FCF (x%x) "
1160                                                 "completed successfully\n",
1161                                                 phba->fcf.current_rec.fcf_indx);
1162                         spin_lock_irq(&phba->hbalock);
1163                         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1164                         phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1165                         spin_unlock_irq(&phba->hbalock);
1166                         phba->fcf.fcf_redisc_attempted = 0; /* reset */
1167                         goto out;
1168                 }
1169         } else if (vport->port_state > LPFC_FLOGI &&
1170                    vport->fc_flag & FC_PT2PT) {
1171                 /*
1172                  * In a p2p topology, it is possible that discovery has
1173                  * already progressed, and this completion can be ignored.
1174                  * Recheck the indicated topology.
1175                  */
1176                 if (!sp->cmn.fPort)
1177                         goto out;
1178         }
1179
1180 flogifail:
1181         spin_lock_irq(&phba->hbalock);
1182         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1183         spin_unlock_irq(&phba->hbalock);
1184
1185         if (!lpfc_error_lost_link(ulp_status, ulp_word4)) {
1186                 /* FLOGI failed, so just use loop map to make discovery list */
1187                 lpfc_disc_list_loopmap(vport);
1188
1189                 /* Start discovery */
1190                 lpfc_disc_start(vport);
1191         } else if (((ulp_status != IOSTAT_LOCAL_REJECT) ||
1192                         (((ulp_word4 & IOERR_PARAM_MASK) !=
1193                          IOERR_SLI_ABORTED) &&
1194                         ((ulp_word4 & IOERR_PARAM_MASK) !=
1195                          IOERR_SLI_DOWN))) &&
1196                         (phba->link_state != LPFC_CLEAR_LA)) {
1197                 /* If FLOGI failed enable link interrupt. */
1198                 lpfc_issue_clear_la(phba, vport);
1199         }
1200 out:
1201         phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING;
1202         lpfc_els_free_iocb(phba, cmdiocb);
1203         lpfc_nlp_put(ndlp);
1204 }
1205
1206 /**
1207  * lpfc_cmpl_els_link_down - Completion callback function for ELS command
1208  *                           aborted during a link down
1209  * @phba: pointer to lpfc hba data structure.
1210  * @cmdiocb: pointer to lpfc command iocb data structure.
1211  * @rspiocb: pointer to lpfc response iocb data structure.
1212  *
1213  */
1214 static void
1215 lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1216                         struct lpfc_iocbq *rspiocb)
1217 {
1218         uint32_t *pcmd;
1219         uint32_t cmd;
1220         u32 ulp_status, ulp_word4;
1221
1222         pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
1223         cmd = *pcmd;
1224
1225         ulp_status = get_job_ulpstatus(phba, rspiocb);
1226         ulp_word4 = get_job_word4(phba, rspiocb);
1227
1228         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1229                         "6445 ELS completes after LINK_DOWN: "
1230                         " Status %x/%x cmd x%x flg x%x\n",
1231                         ulp_status, ulp_word4, cmd,
1232                         cmdiocb->cmd_flag);
1233
1234         if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) {
1235                 cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
1236                 atomic_dec(&phba->fabric_iocb_count);
1237         }
1238         lpfc_els_free_iocb(phba, cmdiocb);
1239 }
1240
1241 /**
1242  * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1243  * @vport: pointer to a host virtual N_Port data structure.
1244  * @ndlp: pointer to a node-list data structure.
1245  * @retry: number of retries to the command IOCB.
1246  *
1247  * This routine issues a Fabric Login (FLOGI) Request ELS command
1248  * for a @vport. The initiator service parameters are put into the payload
1249  * of the FLOGI Request IOCB and the top-level callback function pointer
1250  * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1251  * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1252  * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1253  *
1254  * Note that the ndlp reference count will be incremented by 1 for holding the
1255  * ndlp and the reference to ndlp will be stored into the ndlp field of
1256  * the IOCB for the completion callback function to the FLOGI ELS command.
1257  *
1258  * Return code
1259  *   0 - successfully issued flogi iocb for @vport
1260  *   1 - failed to issue flogi iocb for @vport
1261  **/
1262 static int
1263 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1264                      uint8_t retry)
1265 {
1266         struct lpfc_hba  *phba = vport->phba;
1267         struct serv_parm *sp;
1268         union lpfc_wqe128 *wqe = NULL;
1269         IOCB_t *icmd = NULL;
1270         struct lpfc_iocbq *elsiocb;
1271         struct lpfc_iocbq defer_flogi_acc;
1272         u8 *pcmd, ct;
1273         uint16_t cmdsize;
1274         uint32_t tmo, did;
1275         int rc;
1276
1277         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1278         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1279                                      ndlp->nlp_DID, ELS_CMD_FLOGI);
1280
1281         if (!elsiocb)
1282                 return 1;
1283
1284         wqe = &elsiocb->wqe;
1285         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
1286         icmd = &elsiocb->iocb;
1287
1288         /* For FLOGI request, remainder of payload is service parameters */
1289         *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1290         pcmd += sizeof(uint32_t);
1291         memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1292         sp = (struct serv_parm *) pcmd;
1293
1294         /* Setup CSPs accordingly for Fabric */
1295         sp->cmn.e_d_tov = 0;
1296         sp->cmn.w2.r_a_tov = 0;
1297         sp->cmn.virtual_fabric_support = 0;
1298         sp->cls1.classValid = 0;
1299         if (sp->cmn.fcphLow < FC_PH3)
1300                 sp->cmn.fcphLow = FC_PH3;
1301         if (sp->cmn.fcphHigh < FC_PH3)
1302                 sp->cmn.fcphHigh = FC_PH3;
1303
1304         /* Determine if switch supports priority tagging */
1305         if (phba->cfg_vmid_priority_tagging) {
1306                 sp->cmn.priority_tagging = 1;
1307                 /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
1308                 if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) {
1309                         memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
1310                                sizeof(phba->wwpn));
1311                         memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
1312                                sizeof(phba->wwnn));
1313                 }
1314         }
1315
1316         if  (phba->sli_rev == LPFC_SLI_REV4) {
1317                 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1318                     LPFC_SLI_INTF_IF_TYPE_0) {
1319                         /* FLOGI needs to be 3 for WQE FCFI */
1320                         ct = SLI4_CT_FCFI;
1321                         bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
1322
1323                         /* Set the fcfi to the fcfi we registered with */
1324                         bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
1325                                phba->fcf.fcfi);
1326                 }
1327
1328                 /* Can't do SLI4 class2 without support sequence coalescing */
1329                 sp->cls2.classValid = 0;
1330                 sp->cls2.seqDelivery = 0;
1331         } else {
1332                 /* Historical, setting sequential-delivery bit for SLI3 */
1333                 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
1334                 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
1335                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1336                         sp->cmn.request_multiple_Nport = 1;
1337                         /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1338                         icmd->ulpCt_h = 1;
1339                         icmd->ulpCt_l = 0;
1340                 } else {
1341                         sp->cmn.request_multiple_Nport = 0;
1342                 }
1343
1344                 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1345                         icmd->un.elsreq64.myID = 0;
1346                         icmd->un.elsreq64.fl = 1;
1347                 }
1348         }
1349
1350         tmo = phba->fc_ratov;
1351         phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1352         lpfc_set_disctmo(vport);
1353         phba->fc_ratov = tmo;
1354
1355         phba->fc_stat.elsXmitFLOGI++;
1356         elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi;
1357
1358         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1359                 "Issue FLOGI:     opt:x%x",
1360                 phba->sli3_options, 0, 0);
1361
1362         elsiocb->ndlp = lpfc_nlp_get(ndlp);
1363         if (!elsiocb->ndlp) {
1364                 lpfc_els_free_iocb(phba, elsiocb);
1365                 return 1;
1366         }
1367
1368         rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1369         if (rc == IOCB_ERROR) {
1370                 lpfc_els_free_iocb(phba, elsiocb);
1371                 lpfc_nlp_put(ndlp);
1372                 return 1;
1373         }
1374
1375         phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
1376
1377         /* Clear external loopback plug detected flag */
1378         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1379
1380         /* Check for a deferred FLOGI ACC condition */
1381         if (phba->defer_flogi_acc_flag) {
1382                 /* lookup ndlp for received FLOGI */
1383                 ndlp = lpfc_findnode_did(vport, 0);
1384                 if (!ndlp)
1385                         return 0;
1386
1387                 did = vport->fc_myDID;
1388                 vport->fc_myDID = Fabric_DID;
1389
1390                 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
1391
1392                 if (phba->sli_rev == LPFC_SLI_REV4) {
1393                         bf_set(wqe_ctxt_tag,
1394                                &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1395                                phba->defer_flogi_acc_rx_id);
1396                         bf_set(wqe_rcvoxid,
1397                                &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1398                                phba->defer_flogi_acc_ox_id);
1399                 } else {
1400                         icmd = &defer_flogi_acc.iocb;
1401                         icmd->ulpContext = phba->defer_flogi_acc_rx_id;
1402                         icmd->unsli3.rcvsli3.ox_id =
1403                                 phba->defer_flogi_acc_ox_id;
1404                 }
1405
1406                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1407                                  "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
1408                                  " ox_id: x%x, hba_flag x%x\n",
1409                                  phba->defer_flogi_acc_rx_id,
1410                                  phba->defer_flogi_acc_ox_id, phba->hba_flag);
1411
1412                 /* Send deferred FLOGI ACC */
1413                 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
1414                                  ndlp, NULL);
1415
1416                 phba->defer_flogi_acc_flag = false;
1417                 vport->fc_myDID = did;
1418
1419                 /* Decrement ndlp reference count to indicate the node can be
1420                  * released when other references are removed.
1421                  */
1422                 lpfc_nlp_put(ndlp);
1423         }
1424
1425         return 0;
1426 }
1427
1428 /**
1429  * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1430  * @phba: pointer to lpfc hba data structure.
1431  *
1432  * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1433  * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1434  * list and issues an abort IOCB commond on each outstanding IOCB that
1435  * contains a active Fabric_DID ndlp. Note that this function is to issue
1436  * the abort IOCB command on all the outstanding IOCBs, thus when this
1437  * function returns, it does not guarantee all the IOCBs are actually aborted.
1438  *
1439  * Return code
1440  *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1441  **/
1442 int
1443 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1444 {
1445         struct lpfc_sli_ring *pring;
1446         struct lpfc_iocbq *iocb, *next_iocb;
1447         struct lpfc_nodelist *ndlp;
1448         u32 ulp_command;
1449
1450         /* Abort outstanding I/O on NPort <nlp_DID> */
1451         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1452                         "0201 Abort outstanding I/O on NPort x%x\n",
1453                         Fabric_DID);
1454
1455         pring = lpfc_phba_elsring(phba);
1456         if (unlikely(!pring))
1457                 return -EIO;
1458
1459         /*
1460          * Check the txcmplq for an iocb that matches the nport the driver is
1461          * searching for.
1462          */
1463         spin_lock_irq(&phba->hbalock);
1464         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1465                 ulp_command = get_job_cmnd(phba, iocb);
1466                 if (ulp_command == CMD_ELS_REQUEST64_CR) {
1467                         ndlp = iocb->ndlp;
1468                         if (ndlp && ndlp->nlp_DID == Fabric_DID) {
1469                                 if ((phba->pport->fc_flag & FC_PT2PT) &&
1470                                     !(phba->pport->fc_flag & FC_PT2PT_PLOGI))
1471                                         iocb->fabric_cmd_cmpl =
1472                                                 lpfc_ignore_els_cmpl;
1473                                 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
1474                                                            NULL);
1475                         }
1476                 }
1477         }
1478         /* Make sure HBA is alive */
1479         lpfc_issue_hb_tmo(phba);
1480
1481         spin_unlock_irq(&phba->hbalock);
1482
1483         return 0;
1484 }
1485
1486 /**
1487  * lpfc_initial_flogi - Issue an initial fabric login for a vport
1488  * @vport: pointer to a host virtual N_Port data structure.
1489  *
1490  * This routine issues an initial Fabric Login (FLOGI) for the @vport
1491  * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1492  * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1493  * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1494  * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1495  * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1496  * @vport.
1497  *
1498  * Return code
1499  *   0 - failed to issue initial flogi for @vport
1500  *   1 - successfully issued initial flogi for @vport
1501  **/
1502 int
1503 lpfc_initial_flogi(struct lpfc_vport *vport)
1504 {
1505         struct lpfc_nodelist *ndlp;
1506
1507         vport->port_state = LPFC_FLOGI;
1508         lpfc_set_disctmo(vport);
1509
1510         /* First look for the Fabric ndlp */
1511         ndlp = lpfc_findnode_did(vport, Fabric_DID);
1512         if (!ndlp) {
1513                 /* Cannot find existing Fabric ndlp, so allocate a new one */
1514                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1515                 if (!ndlp)
1516                         return 0;
1517                 /* Set the node type */
1518                 ndlp->nlp_type |= NLP_FABRIC;
1519
1520                 /* Put ndlp onto node list */
1521                 lpfc_enqueue_node(vport, ndlp);
1522         }
1523
1524         /* Reset the Fabric flag, topology change may have happened */
1525         vport->fc_flag &= ~FC_FABRIC;
1526         if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1527                 /* A node reference should be retained while registered with a
1528                  * transport or dev-loss-evt work is pending.
1529                  * Otherwise, decrement node reference to trigger release.
1530                  */
1531                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1532                     !(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
1533                         lpfc_nlp_put(ndlp);
1534                 return 0;
1535         }
1536         return 1;
1537 }
1538
1539 /**
1540  * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1541  * @vport: pointer to a host virtual N_Port data structure.
1542  *
1543  * This routine issues an initial Fabric Discover (FDISC) for the @vport
1544  * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1545  * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1546  * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1547  * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1548  * is then invoked with the @vport and the ndlp to perform the FDISC for the
1549  * @vport.
1550  *
1551  * Return code
1552  *   0 - failed to issue initial fdisc for @vport
1553  *   1 - successfully issued initial fdisc for @vport
1554  **/
1555 int
1556 lpfc_initial_fdisc(struct lpfc_vport *vport)
1557 {
1558         struct lpfc_nodelist *ndlp;
1559
1560         /* First look for the Fabric ndlp */
1561         ndlp = lpfc_findnode_did(vport, Fabric_DID);
1562         if (!ndlp) {
1563                 /* Cannot find existing Fabric ndlp, so allocate a new one */
1564                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1565                 if (!ndlp)
1566                         return 0;
1567
1568                 /* NPIV is only supported in Fabrics. */
1569                 ndlp->nlp_type |= NLP_FABRIC;
1570
1571                 /* Put ndlp onto node list */
1572                 lpfc_enqueue_node(vport, ndlp);
1573         }
1574
1575         if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1576                 /* A node reference should be retained while registered with a
1577                  * transport or dev-loss-evt work is pending.
1578                  * Otherwise, decrement node reference to trigger release.
1579                  */
1580                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1581                     !(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
1582                         lpfc_nlp_put(ndlp);
1583                 return 0;
1584         }
1585         return 1;
1586 }
1587
1588 /**
1589  * lpfc_more_plogi - Check and issue remaining plogis for a vport
1590  * @vport: pointer to a host virtual N_Port data structure.
1591  *
1592  * This routine checks whether there are more remaining Port Logins
1593  * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1594  * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1595  * to issue ELS PLOGIs up to the configured discover threads with the
1596  * @vport (@vport->cfg_discovery_threads). The function also decrement
1597  * the @vport's num_disc_node by 1 if it is not already 0.
1598  **/
1599 void
1600 lpfc_more_plogi(struct lpfc_vport *vport)
1601 {
1602         if (vport->num_disc_nodes)
1603                 vport->num_disc_nodes--;
1604
1605         /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1606         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1607                          "0232 Continue discovery with %d PLOGIs to go "
1608                          "Data: x%x x%x x%x\n",
1609                          vport->num_disc_nodes, vport->fc_plogi_cnt,
1610                          vport->fc_flag, vport->port_state);
1611         /* Check to see if there are more PLOGIs to be sent */
1612         if (vport->fc_flag & FC_NLP_MORE)
1613                 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1614                 lpfc_els_disc_plogi(vport);
1615
1616         return;
1617 }
1618
1619 /**
1620  * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp
1621  * @phba: pointer to lpfc hba data structure.
1622  * @prsp: pointer to response IOCB payload.
1623  * @ndlp: pointer to a node-list data structure.
1624  *
1625  * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1626  * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1627  * The following cases are considered N_Port confirmed:
1628  * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1629  * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1630  * it does not have WWPN assigned either. If the WWPN is confirmed, the
1631  * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1632  * 1) if there is a node on vport list other than the @ndlp with the same
1633  * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1634  * on that node to release the RPI associated with the node; 2) if there is
1635  * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1636  * into, a new node shall be allocated (or activated). In either case, the
1637  * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1638  * be released and the new_ndlp shall be put on to the vport node list and
1639  * its pointer returned as the confirmed node.
1640  *
1641  * Note that before the @ndlp got "released", the keepDID from not-matching
1642  * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1643  * of the @ndlp. This is because the release of @ndlp is actually to put it
1644  * into an inactive state on the vport node list and the vport node list
1645  * management algorithm does not allow two node with a same DID.
1646  *
1647  * Return code
1648  *   pointer to the PLOGI N_Port @ndlp
1649  **/
1650 static struct lpfc_nodelist *
1651 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1652                          struct lpfc_nodelist *ndlp)
1653 {
1654         struct lpfc_vport *vport = ndlp->vport;
1655         struct lpfc_nodelist *new_ndlp;
1656         struct serv_parm *sp;
1657         uint8_t  name[sizeof(struct lpfc_name)];
1658         uint32_t keepDID = 0, keep_nlp_flag = 0;
1659         uint32_t keep_new_nlp_flag = 0;
1660         uint16_t keep_nlp_state;
1661         u32 keep_nlp_fc4_type = 0;
1662         struct lpfc_nvme_rport *keep_nrport = NULL;
1663         unsigned long *active_rrqs_xri_bitmap = NULL;
1664
1665         /* Fabric nodes can have the same WWPN so we don't bother searching
1666          * by WWPN.  Just return the ndlp that was given to us.
1667          */
1668         if (ndlp->nlp_type & NLP_FABRIC)
1669                 return ndlp;
1670
1671         sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1672         memset(name, 0, sizeof(struct lpfc_name));
1673
1674         /* Now we find out if the NPort we are logging into, matches the WWPN
1675          * we have for that ndlp. If not, we have some work to do.
1676          */
1677         new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1678
1679         /* return immediately if the WWPN matches ndlp */
1680         if (!new_ndlp || (new_ndlp == ndlp))
1681                 return ndlp;
1682
1683         /*
1684          * Unregister from backend if not done yet. Could have been skipped
1685          * due to ADISC
1686          */
1687         lpfc_nlp_unreg_node(vport, new_ndlp);
1688
1689         if (phba->sli_rev == LPFC_SLI_REV4) {
1690                 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
1691                                                        GFP_KERNEL);
1692                 if (active_rrqs_xri_bitmap)
1693                         memset(active_rrqs_xri_bitmap, 0,
1694                                phba->cfg_rrq_xri_bitmap_sz);
1695         }
1696
1697         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1698                          "3178 PLOGI confirm: ndlp x%x x%x x%x: "
1699                          "new_ndlp x%x x%x x%x\n",
1700                          ndlp->nlp_DID, ndlp->nlp_flag,  ndlp->nlp_fc4_type,
1701                          (new_ndlp ? new_ndlp->nlp_DID : 0),
1702                          (new_ndlp ? new_ndlp->nlp_flag : 0),
1703                          (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
1704
1705         keepDID = new_ndlp->nlp_DID;
1706
1707         if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap)
1708                 memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap,
1709                        phba->cfg_rrq_xri_bitmap_sz);
1710
1711         /* At this point in this routine, we know new_ndlp will be
1712          * returned. however, any previous GID_FTs that were done
1713          * would have updated nlp_fc4_type in ndlp, so we must ensure
1714          * new_ndlp has the right value.
1715          */
1716         if (vport->fc_flag & FC_FABRIC) {
1717                 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
1718                 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
1719         }
1720
1721         lpfc_unreg_rpi(vport, new_ndlp);
1722         new_ndlp->nlp_DID = ndlp->nlp_DID;
1723         new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1724         if (phba->sli_rev == LPFC_SLI_REV4)
1725                 memcpy(new_ndlp->active_rrqs_xri_bitmap,
1726                        ndlp->active_rrqs_xri_bitmap,
1727                        phba->cfg_rrq_xri_bitmap_sz);
1728
1729         /* Lock both ndlps */
1730         spin_lock_irq(&ndlp->lock);
1731         spin_lock_irq(&new_ndlp->lock);
1732         keep_new_nlp_flag = new_ndlp->nlp_flag;
1733         keep_nlp_flag = ndlp->nlp_flag;
1734         new_ndlp->nlp_flag = ndlp->nlp_flag;
1735
1736         /* if new_ndlp had NLP_UNREG_INP set, keep it */
1737         if (keep_new_nlp_flag & NLP_UNREG_INP)
1738                 new_ndlp->nlp_flag |= NLP_UNREG_INP;
1739         else
1740                 new_ndlp->nlp_flag &= ~NLP_UNREG_INP;
1741
1742         /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
1743         if (keep_new_nlp_flag & NLP_RPI_REGISTERED)
1744                 new_ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1745         else
1746                 new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
1747
1748         /*
1749          * Retain the DROPPED flag. This will take care of the init
1750          * refcount when affecting the state change
1751          */
1752         if (keep_new_nlp_flag & NLP_DROPPED)
1753                 new_ndlp->nlp_flag |= NLP_DROPPED;
1754         else
1755                 new_ndlp->nlp_flag &= ~NLP_DROPPED;
1756
1757         ndlp->nlp_flag = keep_new_nlp_flag;
1758
1759         /* if ndlp had NLP_UNREG_INP set, keep it */
1760         if (keep_nlp_flag & NLP_UNREG_INP)
1761                 ndlp->nlp_flag |= NLP_UNREG_INP;
1762         else
1763                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
1764
1765         /* if ndlp had NLP_RPI_REGISTERED set, keep it */
1766         if (keep_nlp_flag & NLP_RPI_REGISTERED)
1767                 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1768         else
1769                 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
1770
1771         /*
1772          * Retain the DROPPED flag. This will take care of the init
1773          * refcount when affecting the state change
1774          */
1775         if (keep_nlp_flag & NLP_DROPPED)
1776                 ndlp->nlp_flag |= NLP_DROPPED;
1777         else
1778                 ndlp->nlp_flag &= ~NLP_DROPPED;
1779
1780         spin_unlock_irq(&new_ndlp->lock);
1781         spin_unlock_irq(&ndlp->lock);
1782
1783         /* Set nlp_states accordingly */
1784         keep_nlp_state = new_ndlp->nlp_state;
1785         lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1786
1787         /* interchange the nvme remoteport structs */
1788         keep_nrport = new_ndlp->nrport;
1789         new_ndlp->nrport = ndlp->nrport;
1790
1791         /* Move this back to NPR state */
1792         if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1793                 /* The new_ndlp is replacing ndlp totally, so we need
1794                  * to put ndlp on UNUSED list and try to free it.
1795                  */
1796                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1797                          "3179 PLOGI confirm NEW: %x %x\n",
1798                          new_ndlp->nlp_DID, keepDID);
1799
1800                 /* Two ndlps cannot have the same did on the nodelist.
1801                  * Note: for this case, ndlp has a NULL WWPN so setting
1802                  * the nlp_fc4_type isn't required.
1803                  */
1804                 ndlp->nlp_DID = keepDID;
1805                 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1806                 if (phba->sli_rev == LPFC_SLI_REV4 &&
1807                     active_rrqs_xri_bitmap)
1808                         memcpy(ndlp->active_rrqs_xri_bitmap,
1809                                active_rrqs_xri_bitmap,
1810                                phba->cfg_rrq_xri_bitmap_sz);
1811
1812         } else {
1813                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1814                          "3180 PLOGI confirm SWAP: %x %x\n",
1815                          new_ndlp->nlp_DID, keepDID);
1816
1817                 lpfc_unreg_rpi(vport, ndlp);
1818
1819                 /* Two ndlps cannot have the same did and the fc4
1820                  * type must be transferred because the ndlp is in
1821                  * flight.
1822                  */
1823                 ndlp->nlp_DID = keepDID;
1824                 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1825
1826                 if (phba->sli_rev == LPFC_SLI_REV4 &&
1827                     active_rrqs_xri_bitmap)
1828                         memcpy(ndlp->active_rrqs_xri_bitmap,
1829                                active_rrqs_xri_bitmap,
1830                                phba->cfg_rrq_xri_bitmap_sz);
1831
1832                 /* Since we are switching over to the new_ndlp,
1833                  * reset the old ndlp state
1834                  */
1835                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
1836                     (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
1837                         keep_nlp_state = NLP_STE_NPR_NODE;
1838                 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1839                 ndlp->nrport = keep_nrport;
1840         }
1841
1842         /*
1843          * If ndlp is not associated with any rport we can drop it here else
1844          * let dev_loss_tmo_callbk trigger DEVICE_RM event
1845          */
1846         if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
1847                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
1848
1849         if (phba->sli_rev == LPFC_SLI_REV4 &&
1850             active_rrqs_xri_bitmap)
1851                 mempool_free(active_rrqs_xri_bitmap,
1852                              phba->active_rrq_pool);
1853
1854         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1855                          "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n",
1856                          new_ndlp->nlp_DID, new_ndlp->nlp_flag,
1857                          new_ndlp->nlp_fc4_type);
1858
1859         return new_ndlp;
1860 }
1861
1862 /**
1863  * lpfc_end_rscn - Check and handle more rscn for a vport
1864  * @vport: pointer to a host virtual N_Port data structure.
1865  *
1866  * This routine checks whether more Registration State Change
1867  * Notifications (RSCNs) came in while the discovery state machine was in
1868  * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1869  * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1870  * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1871  * handling the RSCNs.
1872  **/
1873 void
1874 lpfc_end_rscn(struct lpfc_vport *vport)
1875 {
1876         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1877
1878         if (vport->fc_flag & FC_RSCN_MODE) {
1879                 /*
1880                  * Check to see if more RSCNs came in while we were
1881                  * processing this one.
1882                  */
1883                 if (vport->fc_rscn_id_cnt ||
1884                     (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1885                         lpfc_els_handle_rscn(vport);
1886                 else {
1887                         spin_lock_irq(shost->host_lock);
1888                         vport->fc_flag &= ~FC_RSCN_MODE;
1889                         vport->fc_flag |= FC_RSCN_MEMENTO;
1890                         spin_unlock_irq(shost->host_lock);
1891                 }
1892         }
1893 }
1894
1895 /**
1896  * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1897  * @phba: pointer to lpfc hba data structure.
1898  * @cmdiocb: pointer to lpfc command iocb data structure.
1899  * @rspiocb: pointer to lpfc response iocb data structure.
1900  *
1901  * This routine will call the clear rrq function to free the rrq and
1902  * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1903  * exist then the clear_rrq is still called because the rrq needs to
1904  * be freed.
1905  **/
1906
1907 static void
1908 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1909                   struct lpfc_iocbq *rspiocb)
1910 {
1911         struct lpfc_vport *vport = cmdiocb->vport;
1912         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
1913         struct lpfc_node_rrq *rrq;
1914         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
1915         u32 ulp_word4 = get_job_word4(phba, rspiocb);
1916
1917         /* we pass cmdiocb to state machine which needs rspiocb as well */
1918         rrq = cmdiocb->context_un.rrq;
1919         cmdiocb->rsp_iocb = rspiocb;
1920
1921         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1922                 "RRQ cmpl:      status:x%x/x%x did:x%x",
1923                 ulp_status, ulp_word4,
1924                 get_job_els_rsp64_did(phba, cmdiocb));
1925
1926
1927         /* rrq completes to NPort <nlp_DID> */
1928         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1929                          "2880 RRQ completes to DID x%x "
1930                          "Data: x%x x%x x%x x%x x%x\n",
1931                          ndlp->nlp_DID, ulp_status, ulp_word4,
1932                          get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
1933
1934         if (ulp_status) {
1935                 /* Check for retry */
1936                 /* RRQ failed Don't print the vport to vport rjts */
1937                 if (ulp_status != IOSTAT_LS_RJT ||
1938                     (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
1939                      ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
1940                     (phba)->pport->cfg_log_verbose & LOG_ELS)
1941                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1942                                          "2881 RRQ failure DID:%06X Status:"
1943                                          "x%x/x%x\n",
1944                                          ndlp->nlp_DID, ulp_status,
1945                                          ulp_word4);
1946         }
1947
1948         lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
1949         lpfc_els_free_iocb(phba, cmdiocb);
1950         lpfc_nlp_put(ndlp);
1951         return;
1952 }
1953 /**
1954  * lpfc_cmpl_els_plogi - Completion callback function for plogi
1955  * @phba: pointer to lpfc hba data structure.
1956  * @cmdiocb: pointer to lpfc command iocb data structure.
1957  * @rspiocb: pointer to lpfc response iocb data structure.
1958  *
1959  * This routine is the completion callback function for issuing the Port
1960  * Login (PLOGI) command. For PLOGI completion, there must be an active
1961  * ndlp on the vport node list that matches the remote node ID from the
1962  * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
1963  * ignored and command IOCB released. The PLOGI response IOCB status is
1964  * checked for error conditions. If there is error status reported, PLOGI
1965  * retry shall be attempted by invoking the lpfc_els_retry() routine.
1966  * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1967  * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1968  * (DSM) is set for this PLOGI completion. Finally, it checks whether
1969  * there are additional N_Port nodes with the vport that need to perform
1970  * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1971  * PLOGIs.
1972  **/
1973 static void
1974 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1975                     struct lpfc_iocbq *rspiocb)
1976 {
1977         struct lpfc_vport *vport = cmdiocb->vport;
1978         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1979         IOCB_t *irsp;
1980         struct lpfc_nodelist *ndlp, *free_ndlp;
1981         struct lpfc_dmabuf *prsp;
1982         int disc;
1983         struct serv_parm *sp = NULL;
1984         u32 ulp_status, ulp_word4, did, iotag;
1985         bool release_node = false;
1986
1987         /* we pass cmdiocb to state machine which needs rspiocb as well */
1988         cmdiocb->rsp_iocb = rspiocb;
1989
1990         ulp_status = get_job_ulpstatus(phba, rspiocb);
1991         ulp_word4 = get_job_word4(phba, rspiocb);
1992         did = get_job_els_rsp64_did(phba, cmdiocb);
1993
1994         if (phba->sli_rev == LPFC_SLI_REV4) {
1995                 iotag = get_wqe_reqtag(cmdiocb);
1996         } else {
1997                 irsp = &rspiocb->iocb;
1998                 iotag = irsp->ulpIoTag;
1999         }
2000
2001         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2002                 "PLOGI cmpl:      status:x%x/x%x did:x%x",
2003                 ulp_status, ulp_word4, did);
2004
2005         ndlp = lpfc_findnode_did(vport, did);
2006         if (!ndlp) {
2007                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2008                                  "0136 PLOGI completes to NPort x%x "
2009                                  "with no ndlp. Data: x%x x%x x%x\n",
2010                                  did, ulp_status, ulp_word4, iotag);
2011                 goto out_freeiocb;
2012         }
2013
2014         /* Since ndlp can be freed in the disc state machine, note if this node
2015          * is being used during discovery.
2016          */
2017         spin_lock_irq(&ndlp->lock);
2018         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
2019         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2020         spin_unlock_irq(&ndlp->lock);
2021
2022         /* PLOGI completes to NPort <nlp_DID> */
2023         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2024                          "0102 PLOGI completes to NPort x%06x "
2025                          "Data: x%x x%x x%x x%x x%x\n",
2026                          ndlp->nlp_DID, ndlp->nlp_fc4_type,
2027                          ulp_status, ulp_word4,
2028                          disc, vport->num_disc_nodes);
2029
2030         /* Check to see if link went down during discovery */
2031         if (lpfc_els_chk_latt(vport)) {
2032                 spin_lock_irq(&ndlp->lock);
2033                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2034                 spin_unlock_irq(&ndlp->lock);
2035                 goto out;
2036         }
2037
2038         if (ulp_status) {
2039                 /* Check for retry */
2040                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2041                         /* ELS command is being retried */
2042                         if (disc) {
2043                                 spin_lock_irq(&ndlp->lock);
2044                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2045                                 spin_unlock_irq(&ndlp->lock);
2046                         }
2047                         goto out;
2048                 }
2049                 /* PLOGI failed Don't print the vport to vport rjts */
2050                 if (ulp_status != IOSTAT_LS_RJT ||
2051                     (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
2052                      ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
2053                     (phba)->pport->cfg_log_verbose & LOG_ELS)
2054                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2055                                          "2753 PLOGI failure DID:%06X "
2056                                          "Status:x%x/x%x\n",
2057                                          ndlp->nlp_DID, ulp_status,
2058                                          ulp_word4);
2059
2060                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2061                 if (!lpfc_error_lost_link(ulp_status, ulp_word4))
2062                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2063                                                 NLP_EVT_CMPL_PLOGI);
2064
2065                 /* If a PLOGI collision occurred, the node needs to continue
2066                  * with the reglogin process.
2067                  */
2068                 spin_lock_irq(&ndlp->lock);
2069                 if ((ndlp->nlp_flag & (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI)) &&
2070                     ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
2071                         spin_unlock_irq(&ndlp->lock);
2072                         goto out;
2073                 }
2074
2075                 /* No PLOGI collision and the node is not registered with the
2076                  * scsi or nvme transport. It is no longer an active node. Just
2077                  * start the device remove process.
2078                  */
2079                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2080                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2081                         if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
2082                                 release_node = true;
2083                 }
2084                 spin_unlock_irq(&ndlp->lock);
2085
2086                 if (release_node)
2087                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2088                                                 NLP_EVT_DEVICE_RM);
2089         } else {
2090                 /* Good status, call state machine */
2091                 prsp = list_entry(cmdiocb->cmd_dmabuf->list.next,
2092                                   struct lpfc_dmabuf, list);
2093                 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
2094
2095                 sp = (struct serv_parm *)((u8 *)prsp->virt +
2096                                           sizeof(u32));
2097
2098                 ndlp->vmid_support = 0;
2099                 if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
2100                     (phba->cfg_vmid_priority_tagging &&
2101                      sp->cmn.priority_tagging)) {
2102                         lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS,
2103                                         "4018 app_hdr_support %d tagging %d DID x%x\n",
2104                                         sp->cmn.app_hdr_support,
2105                                         sp->cmn.priority_tagging,
2106                                         ndlp->nlp_DID);
2107                         /* if the dest port supports VMID, mark it in ndlp */
2108                         ndlp->vmid_support = 1;
2109                 }
2110
2111                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2112                                         NLP_EVT_CMPL_PLOGI);
2113         }
2114
2115         if (disc && vport->num_disc_nodes) {
2116                 /* Check to see if there are more PLOGIs to be sent */
2117                 lpfc_more_plogi(vport);
2118
2119                 if (vport->num_disc_nodes == 0) {
2120                         spin_lock_irq(shost->host_lock);
2121                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
2122                         spin_unlock_irq(shost->host_lock);
2123
2124                         lpfc_can_disctmo(vport);
2125                         lpfc_end_rscn(vport);
2126                 }
2127         }
2128
2129 out:
2130         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2131                               "PLOGI Cmpl PUT:     did:x%x refcnt %d",
2132                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2133
2134 out_freeiocb:
2135         /* Release the reference on the original I/O request. */
2136         free_ndlp = cmdiocb->ndlp;
2137
2138         lpfc_els_free_iocb(phba, cmdiocb);
2139         lpfc_nlp_put(free_ndlp);
2140         return;
2141 }
2142
2143 /**
2144  * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
2145  * @vport: pointer to a host virtual N_Port data structure.
2146  * @did: destination port identifier.
2147  * @retry: number of retries to the command IOCB.
2148  *
2149  * This routine issues a Port Login (PLOGI) command to a remote N_Port
2150  * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
2151  * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
2152  * This routine constructs the proper fields of the PLOGI IOCB and invokes
2153  * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
2154  *
2155  * Note that the ndlp reference count will be incremented by 1 for holding
2156  * the ndlp and the reference to ndlp will be stored into the ndlp field
2157  * of the IOCB for the completion callback function to the PLOGI ELS command.
2158  *
2159  * Return code
2160  *   0 - Successfully issued a plogi for @vport
2161  *   1 - failed to issue a plogi for @vport
2162  **/
2163 int
2164 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
2165 {
2166         struct lpfc_hba  *phba = vport->phba;
2167         struct serv_parm *sp;
2168         struct lpfc_nodelist *ndlp;
2169         struct lpfc_iocbq *elsiocb;
2170         uint8_t *pcmd;
2171         uint16_t cmdsize;
2172         int ret;
2173
2174         ndlp = lpfc_findnode_did(vport, did);
2175         if (!ndlp)
2176                 return 1;
2177
2178         /* Defer the processing of the issue PLOGI until after the
2179          * outstanding UNREG_RPI mbox command completes, unless we
2180          * are going offline. This logic does not apply for Fabric DIDs
2181          */
2182         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
2183             ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
2184             !(vport->fc_flag & FC_OFFLINE_MODE)) {
2185                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2186                                  "4110 Issue PLOGI x%x deferred "
2187                                  "on NPort x%x rpi x%x Data: x%px\n",
2188                                  ndlp->nlp_defer_did, ndlp->nlp_DID,
2189                                  ndlp->nlp_rpi, ndlp);
2190
2191                 /* We can only defer 1st PLOGI */
2192                 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
2193                         ndlp->nlp_defer_did = did;
2194                 return 0;
2195         }
2196
2197         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
2198         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
2199                                      ELS_CMD_PLOGI);
2200         if (!elsiocb)
2201                 return 1;
2202
2203         spin_lock_irq(&ndlp->lock);
2204         ndlp->nlp_flag &= ~NLP_FCP_PRLI_RJT;
2205         spin_unlock_irq(&ndlp->lock);
2206
2207         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2208
2209         /* For PLOGI request, remainder of payload is service parameters */
2210         *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
2211         pcmd += sizeof(uint32_t);
2212         memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
2213         sp = (struct serv_parm *) pcmd;
2214
2215         /*
2216          * If we are a N-port connected to a Fabric, fix-up paramm's so logins
2217          * to device on remote loops work.
2218          */
2219         if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
2220                 sp->cmn.altBbCredit = 1;
2221
2222         if (sp->cmn.fcphLow < FC_PH_4_3)
2223                 sp->cmn.fcphLow = FC_PH_4_3;
2224
2225         if (sp->cmn.fcphHigh < FC_PH3)
2226                 sp->cmn.fcphHigh = FC_PH3;
2227
2228         sp->cmn.valid_vendor_ver_level = 0;
2229         memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
2230         sp->cmn.bbRcvSizeMsb &= 0xF;
2231
2232         /* Check if the destination port supports VMID */
2233         ndlp->vmid_support = 0;
2234         if (vport->vmid_priority_tagging)
2235                 sp->cmn.priority_tagging = 1;
2236         else if (phba->cfg_vmid_app_header &&
2237                  bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags))
2238                 sp->cmn.app_hdr_support = 1;
2239
2240         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2241                 "Issue PLOGI:     did:x%x",
2242                 did, 0, 0);
2243
2244         /* If our firmware supports this feature, convey that
2245          * information to the target using the vendor specific field.
2246          */
2247         if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
2248                 sp->cmn.valid_vendor_ver_level = 1;
2249                 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
2250                 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
2251         }
2252
2253         phba->fc_stat.elsXmitPLOGI++;
2254         elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi;
2255
2256         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2257                               "Issue PLOGI:     did:x%x refcnt %d",
2258                               did, kref_read(&ndlp->kref), 0);
2259         elsiocb->ndlp = lpfc_nlp_get(ndlp);
2260         if (!elsiocb->ndlp) {
2261                 lpfc_els_free_iocb(phba, elsiocb);
2262                 return 1;
2263         }
2264
2265         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2266         if (ret) {
2267                 lpfc_els_free_iocb(phba, elsiocb);
2268                 lpfc_nlp_put(ndlp);
2269                 return 1;
2270         }
2271
2272         return 0;
2273 }
2274
2275 /**
2276  * lpfc_cmpl_els_prli - Completion callback function for prli
2277  * @phba: pointer to lpfc hba data structure.
2278  * @cmdiocb: pointer to lpfc command iocb data structure.
2279  * @rspiocb: pointer to lpfc response iocb data structure.
2280  *
2281  * This routine is the completion callback function for a Process Login
2282  * (PRLI) ELS command. The PRLI response IOCB status is checked for error
2283  * status. If there is error status reported, PRLI retry shall be attempted
2284  * by invoking the lpfc_els_retry() routine. Otherwise, the state
2285  * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
2286  * ndlp to mark the PRLI completion.
2287  **/
2288 static void
2289 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2290                    struct lpfc_iocbq *rspiocb)
2291 {
2292         struct lpfc_vport *vport = cmdiocb->vport;
2293         struct lpfc_nodelist *ndlp;
2294         char *mode;
2295         u32 loglevel;
2296         u32 ulp_status;
2297         u32 ulp_word4;
2298         bool release_node = false;
2299
2300         /* we pass cmdiocb to state machine which needs rspiocb as well */
2301         cmdiocb->rsp_iocb = rspiocb;
2302
2303         ndlp = cmdiocb->ndlp;
2304
2305         ulp_status = get_job_ulpstatus(phba, rspiocb);
2306         ulp_word4 = get_job_word4(phba, rspiocb);
2307
2308         spin_lock_irq(&ndlp->lock);
2309         ndlp->nlp_flag &= ~NLP_PRLI_SND;
2310
2311         /* Driver supports multiple FC4 types.  Counters matter. */
2312         vport->fc_prli_sent--;
2313         ndlp->fc4_prli_sent--;
2314         spin_unlock_irq(&ndlp->lock);
2315
2316         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2317                 "PRLI cmpl:       status:x%x/x%x did:x%x",
2318                 ulp_status, ulp_word4,
2319                 ndlp->nlp_DID);
2320
2321         /* PRLI completes to NPort <nlp_DID> */
2322         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2323                          "0103 PRLI completes to NPort x%06x "
2324                          "Data: x%x x%x x%x x%x\n",
2325                          ndlp->nlp_DID, ulp_status, ulp_word4,
2326                          vport->num_disc_nodes, ndlp->fc4_prli_sent);
2327
2328         /* Check to see if link went down during discovery */
2329         if (lpfc_els_chk_latt(vport))
2330                 goto out;
2331
2332         if (ulp_status) {
2333                 /* Check for retry */
2334                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2335                         /* ELS command is being retried */
2336                         goto out;
2337                 }
2338
2339                 /* If we don't send GFT_ID to Fabric, a PRLI error
2340                  * could be expected.
2341                  */
2342                 if ((vport->fc_flag & FC_FABRIC) ||
2343                     (vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)) {
2344                         mode = KERN_ERR;
2345                         loglevel =  LOG_TRACE_EVENT;
2346                 } else {
2347                         mode = KERN_INFO;
2348                         loglevel =  LOG_ELS;
2349                 }
2350
2351                 /* PRLI failed */
2352                 lpfc_printf_vlog(vport, mode, loglevel,
2353                                  "2754 PRLI failure DID:%06X Status:x%x/x%x, "
2354                                  "data: x%x\n",
2355                                  ndlp->nlp_DID, ulp_status,
2356                                  ulp_word4, ndlp->fc4_prli_sent);
2357
2358                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2359                 if (!lpfc_error_lost_link(ulp_status, ulp_word4))
2360                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2361                                                 NLP_EVT_CMPL_PRLI);
2362
2363                 /*
2364                  * For P2P topology, retain the node so that PLOGI can be
2365                  * attempted on it again.
2366                  */
2367                 if (vport->fc_flag & FC_PT2PT)
2368                         goto out;
2369
2370                 /* As long as this node is not registered with the SCSI
2371                  * or NVMe transport and no other PRLIs are outstanding,
2372                  * it is no longer an active node.  Otherwise devloss
2373                  * handles the final cleanup.
2374                  */
2375                 spin_lock_irq(&ndlp->lock);
2376                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
2377                     !ndlp->fc4_prli_sent) {
2378                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2379                         if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
2380                                 release_node = true;
2381                 }
2382                 spin_unlock_irq(&ndlp->lock);
2383
2384                 if (release_node)
2385                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2386                                                 NLP_EVT_DEVICE_RM);
2387         } else {
2388                 /* Good status, call state machine.  However, if another
2389                  * PRLI is outstanding, don't call the state machine
2390                  * because final disposition to Mapped or Unmapped is
2391                  * completed there.
2392                  */
2393                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2394                                         NLP_EVT_CMPL_PRLI);
2395         }
2396
2397 out:
2398         lpfc_els_free_iocb(phba, cmdiocb);
2399         lpfc_nlp_put(ndlp);
2400         return;
2401 }
2402
2403 /**
2404  * lpfc_issue_els_prli - Issue a prli iocb command for a vport
2405  * @vport: pointer to a host virtual N_Port data structure.
2406  * @ndlp: pointer to a node-list data structure.
2407  * @retry: number of retries to the command IOCB.
2408  *
2409  * This routine issues a Process Login (PRLI) ELS command for the
2410  * @vport. The PRLI service parameters are set up in the payload of the
2411  * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
2412  * is put to the IOCB completion callback func field before invoking the
2413  * routine lpfc_sli_issue_iocb() to send out PRLI command.
2414  *
2415  * Note that the ndlp reference count will be incremented by 1 for holding the
2416  * ndlp and the reference to ndlp will be stored into the ndlp field of
2417  * the IOCB for the completion callback function to the PRLI ELS command.
2418  *
2419  * Return code
2420  *   0 - successfully issued prli iocb command for @vport
2421  *   1 - failed to issue prli iocb command for @vport
2422  **/
2423 int
2424 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2425                     uint8_t retry)
2426 {
2427         int rc = 0;
2428         struct lpfc_hba *phba = vport->phba;
2429         PRLI *npr;
2430         struct lpfc_nvme_prli *npr_nvme;
2431         struct lpfc_iocbq *elsiocb;
2432         uint8_t *pcmd;
2433         uint16_t cmdsize;
2434         u32 local_nlp_type, elscmd;
2435
2436         /*
2437          * If discovery was kicked off from RSCN mode,
2438          * the FC4 types supported from a
2439          * previous GFT_ID command may not be accurate. So, if we
2440          * are a NVME Initiator, always look for the possibility of
2441          * the remote NPort beng a NVME Target.
2442          */
2443         if (phba->sli_rev == LPFC_SLI_REV4 &&
2444             vport->fc_flag & (FC_RSCN_MODE | FC_RSCN_MEMENTO) &&
2445             vport->nvmei_support)
2446                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2447         local_nlp_type = ndlp->nlp_fc4_type;
2448
2449         /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
2450          * fields here before any of them can complete.
2451          */
2452         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2453         ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
2454         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
2455         ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC);
2456         ndlp->nvme_fb_size = 0;
2457
2458  send_next_prli:
2459         if (local_nlp_type & NLP_FC4_FCP) {
2460                 /* Payload is 4 + 16 = 20 x14 bytes. */
2461                 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2462                 elscmd = ELS_CMD_PRLI;
2463         } else if (local_nlp_type & NLP_FC4_NVME) {
2464                 /* Payload is 4 + 20 = 24 x18 bytes. */
2465                 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
2466                 elscmd = ELS_CMD_NVMEPRLI;
2467         } else {
2468                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2469                                  "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
2470                                  ndlp->nlp_fc4_type, ndlp->nlp_DID);
2471                 return 1;
2472         }
2473
2474         /* SLI3 ports don't support NVME.  If this rport is a strict NVME
2475          * FC4 type, implicitly LOGO.
2476          */
2477         if (phba->sli_rev == LPFC_SLI_REV3 &&
2478             ndlp->nlp_fc4_type == NLP_FC4_NVME) {
2479                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2480                                  "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
2481                                  ndlp->nlp_type);
2482                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
2483                 return 1;
2484         }
2485
2486         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2487                                      ndlp->nlp_DID, elscmd);
2488         if (!elsiocb)
2489                 return 1;
2490
2491         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2492
2493         /* For PRLI request, remainder of payload is service parameters */
2494         memset(pcmd, 0, cmdsize);
2495
2496         if (local_nlp_type & NLP_FC4_FCP) {
2497                 /* Remainder of payload is FCP PRLI parameter page.
2498                  * Note: this data structure is defined as
2499                  * BE/LE in the structure definition so no
2500                  * byte swap call is made.
2501                  */
2502                 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
2503                 pcmd += sizeof(uint32_t);
2504                 npr = (PRLI *)pcmd;
2505
2506                 /*
2507                  * If our firmware version is 3.20 or later,
2508                  * set the following bits for FC-TAPE support.
2509                  */
2510                 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2511                         npr->ConfmComplAllowed = 1;
2512                         npr->Retry = 1;
2513                         npr->TaskRetryIdReq = 1;
2514                 }
2515                 npr->estabImagePair = 1;
2516                 npr->readXferRdyDis = 1;
2517                 if (vport->cfg_first_burst_size)
2518                         npr->writeXferRdyDis = 1;
2519
2520                 /* For FCP support */
2521                 npr->prliType = PRLI_FCP_TYPE;
2522                 npr->initiatorFunc = 1;
2523                 elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
2524
2525                 /* Remove FCP type - processed. */
2526                 local_nlp_type &= ~NLP_FC4_FCP;
2527         } else if (local_nlp_type & NLP_FC4_NVME) {
2528                 /* Remainder of payload is NVME PRLI parameter page.
2529                  * This data structure is the newer definition that
2530                  * uses bf macros so a byte swap is required.
2531                  */
2532                 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
2533                 pcmd += sizeof(uint32_t);
2534                 npr_nvme = (struct lpfc_nvme_prli *)pcmd;
2535                 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
2536                 bf_set(prli_estabImagePair, npr_nvme, 0);  /* Should be 0 */
2537                 if (phba->nsler) {
2538                         bf_set(prli_nsler, npr_nvme, 1);
2539                         bf_set(prli_conf, npr_nvme, 1);
2540                 }
2541
2542                 /* Only initiators request first burst. */
2543                 if ((phba->cfg_nvme_enable_fb) &&
2544                     !phba->nvmet_support)
2545                         bf_set(prli_fba, npr_nvme, 1);
2546
2547                 if (phba->nvmet_support) {
2548                         bf_set(prli_tgt, npr_nvme, 1);
2549                         bf_set(prli_disc, npr_nvme, 1);
2550                 } else {
2551                         bf_set(prli_init, npr_nvme, 1);
2552                         bf_set(prli_conf, npr_nvme, 1);
2553                 }
2554
2555                 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
2556                 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
2557                 elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ;
2558
2559                 /* Remove NVME type - processed. */
2560                 local_nlp_type &= ~NLP_FC4_NVME;
2561         }
2562
2563         phba->fc_stat.elsXmitPRLI++;
2564         elsiocb->cmd_cmpl = lpfc_cmpl_els_prli;
2565
2566         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2567                               "Issue PRLI:  did:x%x refcnt %d",
2568                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2569         elsiocb->ndlp = lpfc_nlp_get(ndlp);
2570         if (!elsiocb->ndlp) {
2571                 lpfc_els_free_iocb(phba, elsiocb);
2572                 return 1;
2573         }
2574
2575         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2576         if (rc == IOCB_ERROR) {
2577                 lpfc_els_free_iocb(phba, elsiocb);
2578                 lpfc_nlp_put(ndlp);
2579                 return 1;
2580         }
2581
2582         /* The vport counters are used for lpfc_scan_finished, but
2583          * the ndlp is used to track outstanding PRLIs for different
2584          * FC4 types.
2585          */
2586         spin_lock_irq(&ndlp->lock);
2587         ndlp->nlp_flag |= NLP_PRLI_SND;
2588         vport->fc_prli_sent++;
2589         ndlp->fc4_prli_sent++;
2590         spin_unlock_irq(&ndlp->lock);
2591
2592         /* The driver supports 2 FC4 types.  Make sure
2593          * a PRLI is issued for all types before exiting.
2594          */
2595         if (phba->sli_rev == LPFC_SLI_REV4 &&
2596             local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
2597                 goto send_next_prli;
2598         else
2599                 return 0;
2600 }
2601
2602 /**
2603  * lpfc_rscn_disc - Perform rscn discovery for a vport
2604  * @vport: pointer to a host virtual N_Port data structure.
2605  *
2606  * This routine performs Registration State Change Notification (RSCN)
2607  * discovery for a @vport. If the @vport's node port recovery count is not
2608  * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2609  * the nodes that need recovery. If none of the PLOGI were needed through
2610  * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2611  * invoked to check and handle possible more RSCN came in during the period
2612  * of processing the current ones.
2613  **/
2614 static void
2615 lpfc_rscn_disc(struct lpfc_vport *vport)
2616 {
2617         lpfc_can_disctmo(vport);
2618
2619         /* RSCN discovery */
2620         /* go thru NPR nodes and issue ELS PLOGIs */
2621         if (vport->fc_npr_cnt)
2622                 if (lpfc_els_disc_plogi(vport))
2623                         return;
2624
2625         lpfc_end_rscn(vport);
2626 }
2627
2628 /**
2629  * lpfc_adisc_done - Complete the adisc phase of discovery
2630  * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2631  *
2632  * This function is called when the final ADISC is completed during discovery.
2633  * This function handles clearing link attention or issuing reg_vpi depending
2634  * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2635  * discovery.
2636  * This function is called with no locks held.
2637  **/
2638 static void
2639 lpfc_adisc_done(struct lpfc_vport *vport)
2640 {
2641         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
2642         struct lpfc_hba   *phba = vport->phba;
2643
2644         /*
2645          * For NPIV, cmpl_reg_vpi will set port_state to READY,
2646          * and continue discovery.
2647          */
2648         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2649             !(vport->fc_flag & FC_RSCN_MODE) &&
2650             (phba->sli_rev < LPFC_SLI_REV4)) {
2651
2652                 /*
2653                  * If link is down, clear_la and reg_vpi will be done after
2654                  * flogi following a link up event
2655                  */
2656                 if (!lpfc_is_link_up(phba))
2657                         return;
2658
2659                 /* The ADISCs are complete.  Doesn't matter if they
2660                  * succeeded or failed because the ADISC completion
2661                  * routine guarantees to call the state machine and
2662                  * the RPI is either unregistered (failed ADISC response)
2663                  * or the RPI is still valid and the node is marked
2664                  * mapped for a target.  The exchanges should be in the
2665                  * correct state. This code is specific to SLI3.
2666                  */
2667                 lpfc_issue_clear_la(phba, vport);
2668                 lpfc_issue_reg_vpi(phba, vport);
2669                 return;
2670         }
2671         /*
2672         * For SLI2, we need to set port_state to READY
2673         * and continue discovery.
2674         */
2675         if (vport->port_state < LPFC_VPORT_READY) {
2676                 /* If we get here, there is nothing to ADISC */
2677                 lpfc_issue_clear_la(phba, vport);
2678                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2679                         vport->num_disc_nodes = 0;
2680                         /* go thru NPR list, issue ELS PLOGIs */
2681                         if (vport->fc_npr_cnt)
2682                                 lpfc_els_disc_plogi(vport);
2683                         if (!vport->num_disc_nodes) {
2684                                 spin_lock_irq(shost->host_lock);
2685                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2686                                 spin_unlock_irq(shost->host_lock);
2687                                 lpfc_can_disctmo(vport);
2688                                 lpfc_end_rscn(vport);
2689                         }
2690                 }
2691                 vport->port_state = LPFC_VPORT_READY;
2692         } else
2693                 lpfc_rscn_disc(vport);
2694 }
2695
2696 /**
2697  * lpfc_more_adisc - Issue more adisc as needed
2698  * @vport: pointer to a host virtual N_Port data structure.
2699  *
2700  * This routine determines whether there are more ndlps on a @vport
2701  * node list need to have Address Discover (ADISC) issued. If so, it will
2702  * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2703  * remaining nodes which need to have ADISC sent.
2704  **/
2705 void
2706 lpfc_more_adisc(struct lpfc_vport *vport)
2707 {
2708         if (vport->num_disc_nodes)
2709                 vport->num_disc_nodes--;
2710         /* Continue discovery with <num_disc_nodes> ADISCs to go */
2711         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2712                          "0210 Continue discovery with %d ADISCs to go "
2713                          "Data: x%x x%x x%x\n",
2714                          vport->num_disc_nodes, vport->fc_adisc_cnt,
2715                          vport->fc_flag, vport->port_state);
2716         /* Check to see if there are more ADISCs to be sent */
2717         if (vport->fc_flag & FC_NLP_MORE) {
2718                 lpfc_set_disctmo(vport);
2719                 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2720                 lpfc_els_disc_adisc(vport);
2721         }
2722         if (!vport->num_disc_nodes)
2723                 lpfc_adisc_done(vport);
2724         return;
2725 }
2726
2727 /**
2728  * lpfc_cmpl_els_adisc - Completion callback function for adisc
2729  * @phba: pointer to lpfc hba data structure.
2730  * @cmdiocb: pointer to lpfc command iocb data structure.
2731  * @rspiocb: pointer to lpfc response iocb data structure.
2732  *
2733  * This routine is the completion function for issuing the Address Discover
2734  * (ADISC) command. It first checks to see whether link went down during
2735  * the discovery process. If so, the node will be marked as node port
2736  * recovery for issuing discover IOCB by the link attention handler and
2737  * exit. Otherwise, the response status is checked. If error was reported
2738  * in the response status, the ADISC command shall be retried by invoking
2739  * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2740  * the response status, the state machine is invoked to set transition
2741  * with respect to NLP_EVT_CMPL_ADISC event.
2742  **/
2743 static void
2744 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2745                     struct lpfc_iocbq *rspiocb)
2746 {
2747         struct lpfc_vport *vport = cmdiocb->vport;
2748         IOCB_t *irsp;
2749         struct lpfc_nodelist *ndlp;
2750         int  disc;
2751         u32 ulp_status, ulp_word4, tmo;
2752         bool release_node = false;
2753
2754         /* we pass cmdiocb to state machine which needs rspiocb as well */
2755         cmdiocb->rsp_iocb = rspiocb;
2756
2757         ndlp = cmdiocb->ndlp;
2758
2759         ulp_status = get_job_ulpstatus(phba, rspiocb);
2760         ulp_word4 = get_job_word4(phba, rspiocb);
2761
2762         if (phba->sli_rev == LPFC_SLI_REV4) {
2763                 tmo = get_wqe_tmo(cmdiocb);
2764         } else {
2765                 irsp = &rspiocb->iocb;
2766                 tmo = irsp->ulpTimeout;
2767         }
2768
2769         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2770                 "ADISC cmpl:      status:x%x/x%x did:x%x",
2771                 ulp_status, ulp_word4,
2772                 ndlp->nlp_DID);
2773
2774         /* Since ndlp can be freed in the disc state machine, note if this node
2775          * is being used during discovery.
2776          */
2777         spin_lock_irq(&ndlp->lock);
2778         disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
2779         ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
2780         spin_unlock_irq(&ndlp->lock);
2781         /* ADISC completes to NPort <nlp_DID> */
2782         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2783                          "0104 ADISC completes to NPort x%x "
2784                          "Data: x%x x%x x%x x%x x%x\n",
2785                          ndlp->nlp_DID, ulp_status, ulp_word4,
2786                          tmo, disc, vport->num_disc_nodes);
2787         /* Check to see if link went down during discovery */
2788         if (lpfc_els_chk_latt(vport)) {
2789                 spin_lock_irq(&ndlp->lock);
2790                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2791                 spin_unlock_irq(&ndlp->lock);
2792                 goto out;
2793         }
2794
2795         if (ulp_status) {
2796                 /* Check for retry */
2797                 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2798                         /* ELS command is being retried */
2799                         if (disc) {
2800                                 spin_lock_irq(&ndlp->lock);
2801                                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2802                                 spin_unlock_irq(&ndlp->lock);
2803                                 lpfc_set_disctmo(vport);
2804                         }
2805                         goto out;
2806                 }
2807                 /* ADISC failed */
2808                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2809                                  "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
2810                                  ndlp->nlp_DID, ulp_status,
2811                                  ulp_word4);
2812                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2813                                         NLP_EVT_CMPL_ADISC);
2814
2815                 /* As long as this node is not registered with the SCSI or NVMe
2816                  * transport, it is no longer an active node. Otherwise
2817                  * devloss handles the final cleanup.
2818                  */
2819                 spin_lock_irq(&ndlp->lock);
2820                 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2821                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2822                         if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
2823                                 release_node = true;
2824                 }
2825                 spin_unlock_irq(&ndlp->lock);
2826
2827                 if (release_node)
2828                         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2829                                                 NLP_EVT_DEVICE_RM);
2830         } else
2831                 /* Good status, call state machine */
2832                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2833                                         NLP_EVT_CMPL_ADISC);
2834
2835         /* Check to see if there are more ADISCs to be sent */
2836         if (disc && vport->num_disc_nodes)
2837                 lpfc_more_adisc(vport);
2838 out:
2839         lpfc_els_free_iocb(phba, cmdiocb);
2840         lpfc_nlp_put(ndlp);
2841         return;
2842 }
2843
2844 /**
2845  * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2846  * @vport: pointer to a virtual N_Port data structure.
2847  * @ndlp: pointer to a node-list data structure.
2848  * @retry: number of retries to the command IOCB.
2849  *
2850  * This routine issues an Address Discover (ADISC) for an @ndlp on a
2851  * @vport. It prepares the payload of the ADISC ELS command, updates the
2852  * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2853  * to issue the ADISC ELS command.
2854  *
2855  * Note that the ndlp reference count will be incremented by 1 for holding the
2856  * ndlp and the reference to ndlp will be stored into the ndlp field of
2857  * the IOCB for the completion callback function to the ADISC ELS command.
2858  *
2859  * Return code
2860  *   0 - successfully issued adisc
2861  *   1 - failed to issue adisc
2862  **/
2863 int
2864 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2865                      uint8_t retry)
2866 {
2867         int rc = 0;
2868         struct lpfc_hba  *phba = vport->phba;
2869         ADISC *ap;
2870         struct lpfc_iocbq *elsiocb;
2871         uint8_t *pcmd;
2872         uint16_t cmdsize;
2873
2874         cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2875         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2876                                      ndlp->nlp_DID, ELS_CMD_ADISC);
2877         if (!elsiocb)
2878                 return 1;
2879
2880         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2881
2882         /* For ADISC request, remainder of payload is service parameters */
2883         *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2884         pcmd += sizeof(uint32_t);
2885
2886         /* Fill in ADISC payload */
2887         ap = (ADISC *) pcmd;
2888         ap->hardAL_PA = phba->fc_pref_ALPA;
2889         memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2890         memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2891         ap->DID = be32_to_cpu(vport->fc_myDID);
2892
2893         phba->fc_stat.elsXmitADISC++;
2894         elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc;
2895         spin_lock_irq(&ndlp->lock);
2896         ndlp->nlp_flag |= NLP_ADISC_SND;
2897         spin_unlock_irq(&ndlp->lock);
2898         elsiocb->ndlp = lpfc_nlp_get(ndlp);
2899         if (!elsiocb->ndlp) {
2900                 lpfc_els_free_iocb(phba, elsiocb);
2901                 goto err;
2902         }
2903
2904         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2905                               "Issue ADISC:   did:x%x refcnt %d",
2906                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2907
2908         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2909         if (rc == IOCB_ERROR) {
2910                 lpfc_els_free_iocb(phba, elsiocb);
2911                 lpfc_nlp_put(ndlp);
2912                 goto err;
2913         }
2914
2915         return 0;
2916
2917 err:
2918         spin_lock_irq(&ndlp->lock);
2919         ndlp->nlp_flag &= ~NLP_ADISC_SND;
2920         spin_unlock_irq(&ndlp->lock);
2921         return 1;
2922 }
2923
2924 /**
2925  * lpfc_cmpl_els_logo - Completion callback function for logo
2926  * @phba: pointer to lpfc hba data structure.
2927  * @cmdiocb: pointer to lpfc command iocb data structure.
2928  * @rspiocb: pointer to lpfc response iocb data structure.
2929  *
2930  * This routine is the completion function for issuing the ELS Logout (LOGO)
2931  * command. If no error status was reported from the LOGO response, the
2932  * state machine of the associated ndlp shall be invoked for transition with
2933  * respect to NLP_EVT_CMPL_LOGO event.
2934  **/
2935 static void
2936 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2937                    struct lpfc_iocbq *rspiocb)
2938 {
2939         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
2940         struct lpfc_vport *vport = ndlp->vport;
2941         IOCB_t *irsp;
2942         unsigned long flags;
2943         uint32_t skip_recovery = 0;
2944         int wake_up_waiter = 0;
2945         u32 ulp_status;
2946         u32 ulp_word4;
2947         u32 tmo;
2948
2949         /* we pass cmdiocb to state machine which needs rspiocb as well */
2950         cmdiocb->rsp_iocb = rspiocb;
2951
2952         ulp_status = get_job_ulpstatus(phba, rspiocb);
2953         ulp_word4 = get_job_word4(phba, rspiocb);
2954
2955         if (phba->sli_rev == LPFC_SLI_REV4) {
2956                 tmo = get_wqe_tmo(cmdiocb);
2957         } else {
2958                 irsp = &rspiocb->iocb;
2959                 tmo = irsp->ulpTimeout;
2960         }
2961
2962         spin_lock_irq(&ndlp->lock);
2963         ndlp->nlp_flag &= ~NLP_LOGO_SND;
2964         if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) {
2965                 wake_up_waiter = 1;
2966                 ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
2967         }
2968         spin_unlock_irq(&ndlp->lock);
2969
2970         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2971                 "LOGO cmpl:       status:x%x/x%x did:x%x",
2972                 ulp_status, ulp_word4,
2973                 ndlp->nlp_DID);
2974
2975         /* LOGO completes to NPort <nlp_DID> */
2976         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2977                          "0105 LOGO completes to NPort x%x "
2978                          "refcnt %d nflags x%x Data: x%x x%x x%x x%x\n",
2979                          ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
2980                          ulp_status, ulp_word4,
2981                          tmo, vport->num_disc_nodes);
2982
2983         if (lpfc_els_chk_latt(vport)) {
2984                 skip_recovery = 1;
2985                 goto out;
2986         }
2987
2988         /* The LOGO will not be retried on failure.  A LOGO was
2989          * issued to the remote rport and a ACC or RJT or no Answer are
2990          * all acceptable.  Note the failure and move forward with
2991          * discovery.  The PLOGI will retry.
2992          */
2993         if (ulp_status) {
2994                 /* LOGO failed */
2995                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2996                                  "2756 LOGO failure, No Retry DID:%06X "
2997                                  "Status:x%x/x%x\n",
2998                                  ndlp->nlp_DID, ulp_status,
2999                                  ulp_word4);
3000
3001                 if (lpfc_error_lost_link(ulp_status, ulp_word4)) {
3002                         skip_recovery = 1;
3003                         goto out;
3004                 }
3005         }
3006
3007         /* Call state machine. This will unregister the rpi if needed. */
3008         lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
3009
3010         /* The driver sets this flag for an NPIV instance that doesn't want to
3011          * log into the remote port.
3012          */
3013         if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
3014                 spin_lock_irq(&ndlp->lock);
3015                 if (phba->sli_rev == LPFC_SLI_REV4)
3016                         ndlp->nlp_flag |= NLP_RELEASE_RPI;
3017                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
3018                 spin_unlock_irq(&ndlp->lock);
3019                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
3020                                         NLP_EVT_DEVICE_RM);
3021                 goto out_rsrc_free;
3022         }
3023
3024 out:
3025         /* At this point, the LOGO processing is complete. NOTE: For a
3026          * pt2pt topology, we are assuming the NPortID will only change
3027          * on link up processing. For a LOGO / PLOGI initiated by the
3028          * Initiator, we are assuming the NPortID is not going to change.
3029          */
3030
3031         if (wake_up_waiter && ndlp->logo_waitq)
3032                 wake_up(ndlp->logo_waitq);
3033         /*
3034          * If the node is a target, the handling attempts to recover the port.
3035          * For any other port type, the rpi is unregistered as an implicit
3036          * LOGO.
3037          */
3038         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
3039             skip_recovery == 0) {
3040                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3041                 spin_lock_irqsave(&ndlp->lock, flags);
3042                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3043                 spin_unlock_irqrestore(&ndlp->lock, flags);
3044
3045                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3046                                  "3187 LOGO completes to NPort x%x: Start "
3047                                  "Recovery Data: x%x x%x x%x x%x\n",
3048                                  ndlp->nlp_DID, ulp_status,
3049                                  ulp_word4, tmo,
3050                                  vport->num_disc_nodes);
3051
3052                 lpfc_els_free_iocb(phba, cmdiocb);
3053                 lpfc_nlp_put(ndlp);
3054
3055                 lpfc_disc_start(vport);
3056                 return;
3057         }
3058
3059         /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
3060          * driver sends a LOGO to the rport to cleanup.  For fabric and
3061          * initiator ports cleanup the node as long as it the node is not
3062          * register with the transport.
3063          */
3064         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
3065                 spin_lock_irq(&ndlp->lock);
3066                 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
3067                 spin_unlock_irq(&ndlp->lock);
3068                 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
3069                                         NLP_EVT_DEVICE_RM);
3070         }
3071 out_rsrc_free:
3072         /* Driver is done with the I/O. */
3073         lpfc_els_free_iocb(phba, cmdiocb);
3074         lpfc_nlp_put(ndlp);
3075 }
3076
3077 /**
3078  * lpfc_issue_els_logo - Issue a logo to an node on a vport
3079  * @vport: pointer to a virtual N_Port data structure.
3080  * @ndlp: pointer to a node-list data structure.
3081  * @retry: number of retries to the command IOCB.
3082  *
3083  * This routine constructs and issues an ELS Logout (LOGO) iocb command
3084  * to a remote node, referred by an @ndlp on a @vport. It constructs the
3085  * payload of the IOCB, properly sets up the @ndlp state, and invokes the
3086  * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
3087  *
3088  * Note that the ndlp reference count will be incremented by 1 for holding the
3089  * ndlp and the reference to ndlp will be stored into the ndlp field of
3090  * the IOCB for the completion callback function to the LOGO ELS command.
3091  *
3092  * Callers of this routine are expected to unregister the RPI first
3093  *
3094  * Return code
3095  *   0 - successfully issued logo
3096  *   1 - failed to issue logo
3097  **/
3098 int
3099 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3100                     uint8_t retry)
3101 {
3102         struct lpfc_hba  *phba = vport->phba;
3103         struct lpfc_iocbq *elsiocb;
3104         uint8_t *pcmd;
3105         uint16_t cmdsize;
3106         int rc;
3107
3108         spin_lock_irq(&ndlp->lock);
3109         if (ndlp->nlp_flag & NLP_LOGO_SND) {
3110                 spin_unlock_irq(&ndlp->lock);
3111                 return 0;
3112         }
3113         spin_unlock_irq(&ndlp->lock);
3114
3115         cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
3116         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3117                                      ndlp->nlp_DID, ELS_CMD_LOGO);
3118         if (!elsiocb)
3119                 return 1;
3120
3121         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3122         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
3123         pcmd += sizeof(uint32_t);
3124
3125         /* Fill in LOGO payload */
3126         *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
3127         pcmd += sizeof(uint32_t);
3128         memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
3129
3130         phba->fc_stat.elsXmitLOGO++;
3131         elsiocb->cmd_cmpl = lpfc_cmpl_els_logo;
3132         spin_lock_irq(&ndlp->lock);
3133         ndlp->nlp_flag |= NLP_LOGO_SND;
3134         ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
3135         spin_unlock_irq(&ndlp->lock);
3136         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3137         if (!elsiocb->ndlp) {
3138                 lpfc_els_free_iocb(phba, elsiocb);
3139                 goto err;
3140         }
3141
3142         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3143                               "Issue LOGO:      did:x%x refcnt %d",
3144                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3145
3146         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3147         if (rc == IOCB_ERROR) {
3148                 lpfc_els_free_iocb(phba, elsiocb);
3149                 lpfc_nlp_put(ndlp);
3150                 goto err;
3151         }
3152
3153         spin_lock_irq(&ndlp->lock);
3154         ndlp->nlp_prev_state = ndlp->nlp_state;
3155         spin_unlock_irq(&ndlp->lock);
3156         lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3157         return 0;
3158
3159 err:
3160         spin_lock_irq(&ndlp->lock);
3161         ndlp->nlp_flag &= ~NLP_LOGO_SND;
3162         spin_unlock_irq(&ndlp->lock);
3163         return 1;
3164 }
3165
3166 /**
3167  * lpfc_cmpl_els_cmd - Completion callback function for generic els command
3168  * @phba: pointer to lpfc hba data structure.
3169  * @cmdiocb: pointer to lpfc command iocb data structure.
3170  * @rspiocb: pointer to lpfc response iocb data structure.
3171  *
3172  * This routine is a generic completion callback function for ELS commands.
3173  * Specifically, it is the callback function which does not need to perform
3174  * any command specific operations. It is currently used by the ELS command
3175  * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel
3176  * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr().
3177  * Other than certain debug loggings, this callback function simply invokes the
3178  * lpfc_els_chk_latt() routine to check whether link went down during the
3179  * discovery process.
3180  **/
3181 static void
3182 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3183                   struct lpfc_iocbq *rspiocb)
3184 {
3185         struct lpfc_vport *vport = cmdiocb->vport;
3186         struct lpfc_nodelist *free_ndlp;
3187         IOCB_t *irsp;
3188         u32 ulp_status, ulp_word4, tmo, did, iotag;
3189
3190         ulp_status = get_job_ulpstatus(phba, rspiocb);
3191         ulp_word4 = get_job_word4(phba, rspiocb);
3192         did = get_job_els_rsp64_did(phba, cmdiocb);
3193
3194         if (phba->sli_rev == LPFC_SLI_REV4) {
3195                 tmo = get_wqe_tmo(cmdiocb);
3196                 iotag = get_wqe_reqtag(cmdiocb);
3197         } else {
3198                 irsp = &rspiocb->iocb;
3199                 tmo = irsp->ulpTimeout;
3200                 iotag = irsp->ulpIoTag;
3201         }
3202
3203         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3204                               "ELS cmd cmpl:    status:x%x/x%x did:x%x",
3205                               ulp_status, ulp_word4, did);
3206
3207         /* ELS cmd tag <ulpIoTag> completes */
3208         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3209                          "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
3210                          iotag, ulp_status, ulp_word4, tmo);
3211
3212         /* Check to see if link went down during discovery */
3213         lpfc_els_chk_latt(vport);
3214
3215         free_ndlp = cmdiocb->ndlp;
3216
3217         lpfc_els_free_iocb(phba, cmdiocb);
3218         lpfc_nlp_put(free_ndlp);
3219 }
3220
3221 /**
3222  * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node.
3223  * @vport: pointer to lpfc_vport data structure.
3224  * @fc_ndlp: pointer to the fabric controller (0xfffffd) node.
3225  *
3226  * This routine registers the rpi assigned to the fabric controller
3227  * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED
3228  * state triggering a registration with the SCSI transport.
3229  *
3230  * This routine is single out because the fabric controller node
3231  * does not receive a PLOGI.  This routine is consumed by the
3232  * SCR and RDF ELS commands.  Callers are expected to qualify
3233  * with SLI4 first.
3234  **/
3235 static int
3236 lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
3237 {
3238         int rc = 0;
3239         struct lpfc_hba *phba = vport->phba;
3240         struct lpfc_nodelist *ns_ndlp;
3241         LPFC_MBOXQ_t *mbox;
3242
3243         if (fc_ndlp->nlp_flag & NLP_RPI_REGISTERED)
3244                 return rc;
3245
3246         ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
3247         if (!ns_ndlp)
3248                 return -ENODEV;
3249
3250         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3251                          "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
3252                          __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
3253                          ns_ndlp->nlp_state);
3254         if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
3255                 return -ENODEV;
3256
3257         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3258         if (!mbox) {
3259                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3260                                  "0936 %s: no memory for reg_login "
3261                                  "Data: x%x x%x x%x x%x\n", __func__,
3262                                  fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3263                                  fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3264                 return -ENOMEM;
3265         }
3266         rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID,
3267                           (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi);
3268         if (rc) {
3269                 rc = -EACCES;
3270                 goto out;
3271         }
3272
3273         fc_ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
3274         mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login;
3275         mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp);
3276         if (!mbox->ctx_ndlp) {
3277                 rc = -ENOMEM;
3278                 goto out;
3279         }
3280
3281         mbox->vport = vport;
3282         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3283         if (rc == MBX_NOT_FINISHED) {
3284                 rc = -ENODEV;
3285                 lpfc_nlp_put(fc_ndlp);
3286                 goto out;
3287         }
3288         /* Success path. Exit. */
3289         lpfc_nlp_set_state(vport, fc_ndlp,
3290                            NLP_STE_REG_LOGIN_ISSUE);
3291         return 0;
3292
3293  out:
3294         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
3295         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3296                          "0938 %s: failed to format reg_login "
3297                          "Data: x%x x%x x%x x%x\n", __func__,
3298                          fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3299                          fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3300         return rc;
3301 }
3302
3303 /**
3304  * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd
3305  * @phba: pointer to lpfc hba data structure.
3306  * @cmdiocb: pointer to lpfc command iocb data structure.
3307  * @rspiocb: pointer to lpfc response iocb data structure.
3308  *
3309  * This routine is a generic completion callback function for Discovery ELS cmd.
3310  * Currently used by the ELS command issuing routines for the ELS State Change
3311  * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf().
3312  * These commands will be retried once only for ELS timeout errors.
3313  **/
3314 static void
3315 lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3316                        struct lpfc_iocbq *rspiocb)
3317 {
3318         struct lpfc_vport *vport = cmdiocb->vport;
3319         IOCB_t *irsp;
3320         struct lpfc_els_rdf_rsp *prdf;
3321         struct lpfc_dmabuf *pcmd, *prsp;
3322         u32 *pdata;
3323         u32 cmd;
3324         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
3325         u32 ulp_status, ulp_word4, tmo, did, iotag;
3326
3327         ulp_status = get_job_ulpstatus(phba, rspiocb);
3328         ulp_word4 = get_job_word4(phba, rspiocb);
3329         did = get_job_els_rsp64_did(phba, cmdiocb);
3330
3331         if (phba->sli_rev == LPFC_SLI_REV4) {
3332                 tmo = get_wqe_tmo(cmdiocb);
3333                 iotag = get_wqe_reqtag(cmdiocb);
3334         } else {
3335                 irsp = &rspiocb->iocb;
3336                 tmo = irsp->ulpTimeout;
3337                 iotag = irsp->ulpIoTag;
3338         }
3339
3340         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3341                 "ELS cmd cmpl:    status:x%x/x%x did:x%x",
3342                 ulp_status, ulp_word4, did);
3343
3344         /* ELS cmd tag <ulpIoTag> completes */
3345         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3346                          "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n",
3347                          iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry);
3348
3349         pcmd = cmdiocb->cmd_dmabuf;
3350         if (!pcmd)
3351                 goto out;
3352
3353         pdata = (u32 *)pcmd->virt;
3354         if (!pdata)
3355                 goto out;
3356         cmd = *pdata;
3357
3358         /* Only 1 retry for ELS Timeout only */
3359         if (ulp_status == IOSTAT_LOCAL_REJECT &&
3360             ((ulp_word4 & IOERR_PARAM_MASK) ==
3361             IOERR_SEQUENCE_TIMEOUT)) {
3362                 cmdiocb->retry++;
3363                 if (cmdiocb->retry <= 1) {
3364                         switch (cmd) {
3365                         case ELS_CMD_SCR:
3366                                 lpfc_issue_els_scr(vport, cmdiocb->retry);
3367                                 break;
3368                         case ELS_CMD_EDC:
3369                                 lpfc_issue_els_edc(vport, cmdiocb->retry);
3370                                 break;
3371                         case ELS_CMD_RDF:
3372                                 lpfc_issue_els_rdf(vport, cmdiocb->retry);
3373                                 break;
3374                         }
3375                         goto out;
3376                 }
3377                 phba->fc_stat.elsRetryExceeded++;
3378         }
3379         if (cmd == ELS_CMD_EDC) {
3380                 /* must be called before checking uplStatus and returning */
3381                 lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb);
3382                 return;
3383         }
3384         if (ulp_status) {
3385                 /* ELS discovery cmd completes with error */
3386                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
3387                                  "4203 ELS cmd x%x error: x%x x%X\n", cmd,
3388                                  ulp_status, ulp_word4);
3389                 goto out;
3390         }
3391
3392         /* The RDF response doesn't have any impact on the running driver
3393          * but the notification descriptors are dumped here for support.
3394          */
3395         if (cmd == ELS_CMD_RDF) {
3396                 int i;
3397
3398                 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3399                 if (!prsp)
3400                         goto out;
3401
3402                 prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
3403                 if (!prdf)
3404                         goto out;
3405
3406                 for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
3407                             i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
3408                         lpfc_printf_vlog(vport, KERN_INFO,
3409                                          LOG_ELS | LOG_CGN_MGMT,
3410                                          "4677 Fabric RDF Notification Grant "
3411                                          "Data: 0x%08x Reg: %x %x\n",
3412                                          be32_to_cpu(
3413                                                  prdf->reg_d1.desc_tags[i]),
3414                                          phba->cgn_reg_signal,
3415                                          phba->cgn_reg_fpin);
3416         }
3417
3418 out:
3419         /* Check to see if link went down during discovery */
3420         lpfc_els_chk_latt(vport);
3421         lpfc_els_free_iocb(phba, cmdiocb);
3422         lpfc_nlp_put(ndlp);
3423         return;
3424 }
3425
3426 /**
3427  * lpfc_issue_els_scr - Issue a scr to an node on a vport
3428  * @vport: pointer to a host virtual N_Port data structure.
3429  * @retry: retry counter for the command IOCB.
3430  *
3431  * This routine issues a State Change Request (SCR) to a fabric node
3432  * on a @vport. The remote node is Fabric Controller (0xfffffd). It
3433  * first search the @vport node list to find the matching ndlp. If no such
3434  * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
3435  * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
3436  * routine is invoked to send the SCR IOCB.
3437  *
3438  * Note that the ndlp reference count will be incremented by 1 for holding the
3439  * ndlp and the reference to ndlp will be stored into the ndlp field of
3440  * the IOCB for the completion callback function to the SCR ELS command.
3441  *
3442  * Return code
3443  *   0 - Successfully issued scr command
3444  *   1 - Failed to issue scr command
3445  **/
3446 int
3447 lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
3448 {
3449         int rc = 0;
3450         struct lpfc_hba  *phba = vport->phba;
3451         struct lpfc_iocbq *elsiocb;
3452         uint8_t *pcmd;
3453         uint16_t cmdsize;
3454         struct lpfc_nodelist *ndlp;
3455
3456         cmdsize = (sizeof(uint32_t) + sizeof(SCR));
3457
3458         ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3459         if (!ndlp) {
3460                 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3461                 if (!ndlp)
3462                         return 1;
3463                 lpfc_enqueue_node(vport, ndlp);
3464         }
3465
3466         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3467                                      ndlp->nlp_DID, ELS_CMD_SCR);
3468         if (!elsiocb)
3469                 return 1;
3470
3471         if (phba->sli_rev == LPFC_SLI_REV4) {
3472                 rc = lpfc_reg_fab_ctrl_node(vport, ndlp);
3473                 if (rc) {
3474                         lpfc_els_free_iocb(phba, elsiocb);
3475                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3476                                          "0937 %s: Failed to reg fc node, rc %d\n",
3477                                          __func__, rc);
3478                         return 1;
3479                 }
3480         }
3481         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3482
3483         *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
3484         pcmd += sizeof(uint32_t);
3485
3486         /* For SCR, remainder of payload is SCR parameter page */
3487         memset(pcmd, 0, sizeof(SCR));
3488         ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
3489
3490         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3491                 "Issue SCR:       did:x%x",
3492                 ndlp->nlp_DID, 0, 0);
3493
3494         phba->fc_stat.elsXmitSCR++;
3495         elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3496         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3497         if (!elsiocb->ndlp) {
3498                 lpfc_els_free_iocb(phba, elsiocb);
3499                 return 1;
3500         }
3501
3502         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3503                               "Issue SCR:     did:x%x refcnt %d",
3504                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3505
3506         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3507         if (rc == IOCB_ERROR) {
3508                 lpfc_els_free_iocb(phba, elsiocb);
3509                 lpfc_nlp_put(ndlp);
3510                 return 1;
3511         }
3512
3513         return 0;
3514 }
3515
3516 /**
3517  * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
3518  *   or the other nport (pt2pt).
3519  * @vport: pointer to a host virtual N_Port data structure.
3520  * @retry: number of retries to the command IOCB.
3521  *
3522  * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
3523  *  when connected to a fabric, or to the remote port when connected
3524  *  in point-to-point mode. When sent to the Fabric Controller, it will
3525  *  replay the RSCN to registered recipients.
3526  *
3527  * Note that the ndlp reference count will be incremented by 1 for holding the
3528  * ndlp and the reference to ndlp will be stored into the ndlp field of
3529  * the IOCB for the completion callback function to the RSCN ELS command.
3530  *
3531  * Return code
3532  *   0 - Successfully issued RSCN command
3533  *   1 - Failed to issue RSCN command
3534  **/
3535 int
3536 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
3537 {
3538         int rc = 0;
3539         struct lpfc_hba *phba = vport->phba;
3540         struct lpfc_iocbq *elsiocb;
3541         struct lpfc_nodelist *ndlp;
3542         struct {
3543                 struct fc_els_rscn rscn;
3544                 struct fc_els_rscn_page portid;
3545         } *event;
3546         uint32_t nportid;
3547         uint16_t cmdsize = sizeof(*event);
3548
3549         /* Not supported for private loop */
3550         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3551             !(vport->fc_flag & FC_PUBLIC_LOOP))
3552                 return 1;
3553
3554         if (vport->fc_flag & FC_PT2PT) {
3555                 /* find any mapped nport - that would be the other nport */
3556                 ndlp = lpfc_findnode_mapped(vport);
3557                 if (!ndlp)
3558                         return 1;
3559         } else {
3560                 nportid = FC_FID_FCTRL;
3561                 /* find the fabric controller node */
3562                 ndlp = lpfc_findnode_did(vport, nportid);
3563                 if (!ndlp) {
3564                         /* if one didn't exist, make one */
3565                         ndlp = lpfc_nlp_init(vport, nportid);
3566                         if (!ndlp)
3567                                 return 1;
3568                         lpfc_enqueue_node(vport, ndlp);
3569                 }
3570         }
3571
3572         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3573                                      ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
3574
3575         if (!elsiocb)
3576                 return 1;
3577
3578         event = elsiocb->cmd_dmabuf->virt;
3579
3580         event->rscn.rscn_cmd = ELS_RSCN;
3581         event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
3582         event->rscn.rscn_plen = cpu_to_be16(cmdsize);
3583
3584         nportid = vport->fc_myDID;
3585         /* appears that page flags must be 0 for fabric to broadcast RSCN */
3586         event->portid.rscn_page_flags = 0;
3587         event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
3588         event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
3589         event->portid.rscn_fid[2] = nportid & 0x000000FF;
3590
3591         phba->fc_stat.elsXmitRSCN++;
3592         elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3593         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3594         if (!elsiocb->ndlp) {
3595                 lpfc_els_free_iocb(phba, elsiocb);
3596                 return 1;
3597         }
3598
3599         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3600                               "Issue RSCN:       did:x%x",
3601                               ndlp->nlp_DID, 0, 0);
3602
3603         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3604         if (rc == IOCB_ERROR) {
3605                 lpfc_els_free_iocb(phba, elsiocb);
3606                 lpfc_nlp_put(ndlp);
3607                 return 1;
3608         }
3609
3610         return 0;
3611 }
3612
3613 /**
3614  * lpfc_issue_els_farpr - Issue a farp to an node on a vport
3615  * @vport: pointer to a host virtual N_Port data structure.
3616  * @nportid: N_Port identifier to the remote node.
3617  * @retry: number of retries to the command IOCB.
3618  *
3619  * This routine issues a Fibre Channel Address Resolution Response
3620  * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
3621  * is passed into the function. It first search the @vport node list to find
3622  * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
3623  * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
3624  * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
3625  *
3626  * Note that the ndlp reference count will be incremented by 1 for holding the
3627  * ndlp and the reference to ndlp will be stored into the ndlp field of
3628  * the IOCB for the completion callback function to the FARPR ELS command.
3629  *
3630  * Return code
3631  *   0 - Successfully issued farpr command
3632  *   1 - Failed to issue farpr command
3633  **/
3634 static int
3635 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
3636 {
3637         int rc = 0;
3638         struct lpfc_hba  *phba = vport->phba;
3639         struct lpfc_iocbq *elsiocb;
3640         FARP *fp;
3641         uint8_t *pcmd;
3642         uint32_t *lp;
3643         uint16_t cmdsize;
3644         struct lpfc_nodelist *ondlp;
3645         struct lpfc_nodelist *ndlp;
3646
3647         cmdsize = (sizeof(uint32_t) + sizeof(FARP));
3648
3649         ndlp = lpfc_findnode_did(vport, nportid);
3650         if (!ndlp) {
3651                 ndlp = lpfc_nlp_init(vport, nportid);
3652                 if (!ndlp)
3653                         return 1;
3654                 lpfc_enqueue_node(vport, ndlp);
3655         }
3656
3657         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3658                                      ndlp->nlp_DID, ELS_CMD_FARPR);
3659         if (!elsiocb)
3660                 return 1;
3661
3662         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3663
3664         *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
3665         pcmd += sizeof(uint32_t);
3666
3667         /* Fill in FARPR payload */
3668         fp = (FARP *) (pcmd);
3669         memset(fp, 0, sizeof(FARP));
3670         lp = (uint32_t *) pcmd;
3671         *lp++ = be32_to_cpu(nportid);
3672         *lp++ = be32_to_cpu(vport->fc_myDID);
3673         fp->Rflags = 0;
3674         fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
3675
3676         memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
3677         memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3678         ondlp = lpfc_findnode_did(vport, nportid);
3679         if (ondlp) {
3680                 memcpy(&fp->OportName, &ondlp->nlp_portname,
3681                        sizeof(struct lpfc_name));
3682                 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
3683                        sizeof(struct lpfc_name));
3684         }
3685
3686         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3687                 "Issue FARPR:     did:x%x",
3688                 ndlp->nlp_DID, 0, 0);
3689
3690         phba->fc_stat.elsXmitFARPR++;
3691         elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3692         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3693         if (!elsiocb->ndlp) {
3694                 lpfc_els_free_iocb(phba, elsiocb);
3695                 return 1;
3696         }
3697
3698         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3699         if (rc == IOCB_ERROR) {
3700                 /* The additional lpfc_nlp_put will cause the following
3701                  * lpfc_els_free_iocb routine to trigger the release of
3702                  * the node.
3703                  */
3704                 lpfc_els_free_iocb(phba, elsiocb);
3705                 lpfc_nlp_put(ndlp);
3706                 return 1;
3707         }
3708         /* This will cause the callback-function lpfc_cmpl_els_cmd to
3709          * trigger the release of the node.
3710          */
3711         /* Don't release reference count as RDF is likely outstanding */
3712         return 0;
3713 }
3714
3715 /**
3716  * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
3717  * @vport: pointer to a host virtual N_Port data structure.
3718  * @retry: retry counter for the command IOCB.
3719  *
3720  * This routine issues an ELS RDF to the Fabric Controller to register
3721  * for diagnostic functions.
3722  *
3723  * Note that the ndlp reference count will be incremented by 1 for holding the
3724  * ndlp and the reference to ndlp will be stored into the ndlp field of
3725  * the IOCB for the completion callback function to the RDF ELS command.
3726  *
3727  * Return code
3728  *   0 - Successfully issued rdf command
3729  *   1 - Failed to issue rdf command
3730  **/
3731 int
3732 lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
3733 {
3734         struct lpfc_hba *phba = vport->phba;
3735         struct lpfc_iocbq *elsiocb;
3736         struct lpfc_els_rdf_req *prdf;
3737         struct lpfc_nodelist *ndlp;
3738         uint16_t cmdsize;
3739         int rc;
3740
3741         cmdsize = sizeof(*prdf);
3742
3743         ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3744         if (!ndlp) {
3745                 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3746                 if (!ndlp)
3747                         return -ENODEV;
3748                 lpfc_enqueue_node(vport, ndlp);
3749         }
3750
3751         /* RDF ELS is not required on an NPIV VN_Port. */
3752         if (vport->port_type == LPFC_NPIV_PORT)
3753                 return -EACCES;
3754
3755         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3756                                      ndlp->nlp_DID, ELS_CMD_RDF);
3757         if (!elsiocb)
3758                 return -ENOMEM;
3759
3760         /* Configure the payload for the supported FPIN events. */
3761         prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt;
3762         memset(prdf, 0, cmdsize);
3763         prdf->rdf.fpin_cmd = ELS_RDF;
3764         prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
3765                                          sizeof(struct fc_els_rdf));
3766         prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
3767         prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
3768                                 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
3769         prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
3770         prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
3771         prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
3772         prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
3773         prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
3774
3775         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3776                          "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n",
3777                          ndlp->nlp_DID, phba->cgn_reg_signal,
3778                          phba->cgn_reg_fpin);
3779
3780         phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ;
3781         elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3782         elsiocb->ndlp = lpfc_nlp_get(ndlp);
3783         if (!elsiocb->ndlp) {
3784                 lpfc_els_free_iocb(phba, elsiocb);
3785                 return -EIO;
3786         }
3787
3788         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3789                               "Issue RDF:     did:x%x refcnt %d",
3790                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3791
3792         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3793         if (rc == IOCB_ERROR) {
3794                 lpfc_els_free_iocb(phba, elsiocb);
3795                 lpfc_nlp_put(ndlp);
3796                 return -EIO;
3797         }
3798         return 0;
3799 }
3800
3801  /**
3802   * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric.
3803   * @vport: pointer to a host virtual N_Port data structure.
3804   * @cmdiocb: pointer to lpfc command iocb data structure.
3805   * @ndlp: pointer to a node-list data structure.
3806   *
3807   * A received RDF implies a possible change to fabric supported diagnostic
3808   * functions.  This routine sends LS_ACC and then has the Nx_Port issue a new
3809   * RDF request to reregister for supported diagnostic functions.
3810   *
3811   * Return code
3812   *   0 - Success
3813   *   -EIO - Failed to process received RDF
3814   **/
3815 static int
3816 lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
3817                  struct lpfc_nodelist *ndlp)
3818 {
3819         /* Send LS_ACC */
3820         if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) {
3821                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3822                                  "1623 Failed to RDF_ACC from x%x for x%x\n",
3823                                  ndlp->nlp_DID, vport->fc_myDID);
3824                 return -EIO;
3825         }
3826
3827         /* Issue new RDF for reregistering */
3828         if (lpfc_issue_els_rdf(vport, 0)) {
3829                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3830                                  "2623 Failed to re register RDF for x%x\n",
3831                                  vport->fc_myDID);
3832                 return -EIO;
3833         }
3834
3835         return 0;
3836 }
3837
3838 /**
3839  * lpfc_least_capable_settings - helper function for EDC rsp processing
3840  * @phba: pointer to lpfc hba data structure.
3841  * @pcgd: pointer to congestion detection descriptor in EDC rsp.
3842  *
3843  * This helper routine determines the least capable setting for
3844  * congestion signals, signal freq, including scale, from the
3845  * congestion detection descriptor in the EDC rsp.  The routine
3846  * sets @phba values in preparation for a set_featues mailbox.
3847  **/
3848 static void
3849 lpfc_least_capable_settings(struct lpfc_hba *phba,
3850                             struct fc_diag_cg_sig_desc *pcgd)
3851 {
3852         u32 rsp_sig_cap = 0, drv_sig_cap = 0;
3853         u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
3854
3855         /* Get rsp signal and frequency capabilities.  */
3856         rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
3857         rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
3858         rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
3859
3860         /* If the Fport does not support signals. Set FPIN only */
3861         if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED)
3862                 goto out_no_support;
3863
3864         /* Apply the xmt scale to the xmt cycle to get the correct frequency.
3865          * Adapter default is 100 millisSeconds.  Convert all xmt cycle values
3866          * to milliSeconds.
3867          */
3868         switch (rsp_sig_freq_scale) {
3869         case EDC_CG_SIGFREQ_SEC:
3870                 rsp_sig_freq_cyc *= MSEC_PER_SEC;
3871                 break;
3872         case EDC_CG_SIGFREQ_MSEC:
3873                 rsp_sig_freq_cyc = 1;
3874                 break;
3875         default:
3876                 goto out_no_support;
3877         }
3878
3879         /* Convenient shorthand. */
3880         drv_sig_cap = phba->cgn_reg_signal;
3881
3882         /* Choose the least capable frequency. */
3883         if (rsp_sig_freq_cyc > phba->cgn_sig_freq)
3884                 phba->cgn_sig_freq = rsp_sig_freq_cyc;
3885
3886         /* Should be some common signals support. Settle on least capable
3887          * signal and adjust FPIN values. Initialize defaults to ease the
3888          * decision.
3889          */
3890         phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
3891         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
3892         if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY &&
3893             (drv_sig_cap == EDC_CG_SIG_WARN_ONLY ||
3894              drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) {
3895                 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
3896                 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
3897         }
3898         if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) {
3899                 if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) {
3900                         phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM;
3901                         phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE;
3902                 }
3903                 if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) {
3904                         phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
3905                         phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
3906                 }
3907         }
3908
3909         /* We are NOT recording signal frequency in congestion info buffer */
3910         return;
3911
3912 out_no_support:
3913         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
3914         phba->cgn_sig_freq = 0;
3915         phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
3916 }
3917
3918 DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
3919                         FC_LS_TLV_DTAG_INIT);
3920
3921 /**
3922  * lpfc_cmpl_els_edc - Completion callback function for EDC
3923  * @phba: pointer to lpfc hba data structure.
3924  * @cmdiocb: pointer to lpfc command iocb data structure.
3925  * @rspiocb: pointer to lpfc response iocb data structure.
3926  *
3927  * This routine is the completion callback function for issuing the Exchange
3928  * Diagnostic Capabilities (EDC) command. The driver issues an EDC to
3929  * notify the FPort of its Congestion and Link Fault capabilities.  This
3930  * routine parses the FPort's response and decides on the least common
3931  * values applicable to both FPort and NPort for Warnings and Alarms that
3932  * are communicated via hardware signals.
3933  **/
3934 static void
3935 lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3936                   struct lpfc_iocbq *rspiocb)
3937 {
3938         IOCB_t *irsp_iocb;
3939         struct fc_els_edc_resp *edc_rsp;
3940         struct fc_tlv_desc *tlv;
3941         struct fc_diag_cg_sig_desc *pcgd;
3942         struct fc_diag_lnkflt_desc *plnkflt;
3943         struct lpfc_dmabuf *pcmd, *prsp;
3944         const char *dtag_nm;
3945         u32 *pdata, dtag;
3946         int desc_cnt = 0, bytes_remain;
3947         bool rcv_cap_desc = false;
3948         struct lpfc_nodelist *ndlp;
3949         u32 ulp_status, ulp_word4, tmo, did, iotag;
3950
3951         ndlp = cmdiocb->ndlp;
3952
3953         ulp_status = get_job_ulpstatus(phba, rspiocb);
3954         ulp_word4 = get_job_word4(phba, rspiocb);
3955         did = get_job_els_rsp64_did(phba, rspiocb);
3956
3957         if (phba->sli_rev == LPFC_SLI_REV4) {
3958                 tmo = get_wqe_tmo(rspiocb);
3959                 iotag = get_wqe_reqtag(rspiocb);
3960         } else {
3961                 irsp_iocb = &rspiocb->iocb;
3962                 tmo = irsp_iocb->ulpTimeout;
3963                 iotag = irsp_iocb->ulpIoTag;
3964         }
3965
3966         lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
3967                               "EDC cmpl:    status:x%x/x%x did:x%x",
3968                               ulp_status, ulp_word4, did);
3969
3970         /* ELS cmd tag <ulpIoTag> completes */
3971         lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3972                         "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
3973                         iotag, ulp_status, ulp_word4, tmo);
3974
3975         pcmd = cmdiocb->cmd_dmabuf;
3976         if (!pcmd)
3977                 goto out;
3978
3979         pdata = (u32 *)pcmd->virt;
3980         if (!pdata)
3981                 goto out;
3982
3983         /* Need to clear signal values, send features MB and RDF with FPIN. */
3984         if (ulp_status)
3985                 goto out;
3986
3987         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3988         if (!prsp)
3989                 goto out;
3990
3991         edc_rsp = prsp->virt;
3992         if (!edc_rsp)
3993                 goto out;
3994
3995         /* ELS cmd tag <ulpIoTag> completes */
3996         lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3997                         "4676 Fabric EDC Rsp: "
3998                         "0x%02x, 0x%08x\n",
3999                         edc_rsp->acc_hdr.la_cmd,
4000                         be32_to_cpu(edc_rsp->desc_list_len));
4001
4002         /*
4003          * Payload length in bytes is the response descriptor list
4004          * length minus the 12 bytes of Link Service Request
4005          * Information descriptor in the reply.
4006          */
4007         bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) -
4008                                    sizeof(struct fc_els_lsri_desc);
4009         if (bytes_remain <= 0)
4010                 goto out;
4011
4012         tlv = edc_rsp->desc;
4013
4014         /*
4015          * cycle through EDC diagnostic descriptors to find the
4016          * congestion signaling capability descriptor
4017          */
4018         while (bytes_remain) {
4019                 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
4020                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4021                                         "6461 Truncated TLV hdr on "
4022                                         "Diagnostic descriptor[%d]\n",
4023                                         desc_cnt);
4024                         goto out;
4025                 }
4026
4027                 dtag = be32_to_cpu(tlv->desc_tag);
4028                 switch (dtag) {
4029                 case ELS_DTAG_LNK_FAULT_CAP:
4030                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4031                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4032                                         sizeof(struct fc_diag_lnkflt_desc)) {
4033                                 lpfc_printf_log(
4034                                         phba, KERN_WARNING, LOG_CGN_MGMT,
4035                                         "6462 Truncated Link Fault Diagnostic "
4036                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4037                                         desc_cnt, bytes_remain,
4038                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4039                                         sizeof(struct fc_diag_cg_sig_desc));
4040                                 goto out;
4041                         }
4042                         plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
4043                         lpfc_printf_log(
4044                                 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4045                                 "4617 Link Fault Desc Data: 0x%08x 0x%08x "
4046                                 "0x%08x 0x%08x 0x%08x\n",
4047                                 be32_to_cpu(plnkflt->desc_tag),
4048                                 be32_to_cpu(plnkflt->desc_len),
4049                                 be32_to_cpu(
4050                                         plnkflt->degrade_activate_threshold),
4051                                 be32_to_cpu(
4052                                         plnkflt->degrade_deactivate_threshold),
4053                                 be32_to_cpu(plnkflt->fec_degrade_interval));
4054                         break;
4055                 case ELS_DTAG_CG_SIGNAL_CAP:
4056                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4057                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4058                                         sizeof(struct fc_diag_cg_sig_desc)) {
4059                                 lpfc_printf_log(
4060                                         phba, KERN_WARNING, LOG_CGN_MGMT,
4061                                         "6463 Truncated Cgn Signal Diagnostic "
4062                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4063                                         desc_cnt, bytes_remain,
4064                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4065                                         sizeof(struct fc_diag_cg_sig_desc));
4066                                 goto out;
4067                         }
4068
4069                         pcgd = (struct fc_diag_cg_sig_desc *)tlv;
4070                         lpfc_printf_log(
4071                                 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4072                                 "4616 CGN Desc Data: 0x%08x 0x%08x "
4073                                 "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n",
4074                                 be32_to_cpu(pcgd->desc_tag),
4075                                 be32_to_cpu(pcgd->desc_len),
4076                                 be32_to_cpu(pcgd->xmt_signal_capability),
4077                                 be16_to_cpu(pcgd->xmt_signal_frequency.count),
4078                                 be16_to_cpu(pcgd->xmt_signal_frequency.units),
4079                                 be32_to_cpu(pcgd->rcv_signal_capability),
4080                                 be16_to_cpu(pcgd->rcv_signal_frequency.count),
4081                                 be16_to_cpu(pcgd->rcv_signal_frequency.units));
4082
4083                         /* Compare driver and Fport capabilities and choose
4084                          * least common.
4085                          */
4086                         lpfc_least_capable_settings(phba, pcgd);
4087                         rcv_cap_desc = true;
4088                         break;
4089                 default:
4090                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
4091                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4092                                         "4919 unknown Diagnostic "
4093                                         "Descriptor[%d]: tag x%x (%s)\n",
4094                                         desc_cnt, dtag, dtag_nm);
4095                 }
4096
4097                 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
4098                 tlv = fc_tlv_next_desc(tlv);
4099                 desc_cnt++;
4100         }
4101
4102 out:
4103         if (!rcv_cap_desc) {
4104                 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
4105                 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4106                 phba->cgn_sig_freq = 0;
4107                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
4108                                 "4202 EDC rsp error - sending RDF "
4109                                 "for FPIN only.\n");
4110         }
4111
4112         lpfc_config_cgn_signal(phba);
4113
4114         /* Check to see if link went down during discovery */
4115         lpfc_els_chk_latt(phba->pport);
4116         lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
4117                               "EDC Cmpl:     did:x%x refcnt %d",
4118                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4119         lpfc_els_free_iocb(phba, cmdiocb);
4120         lpfc_nlp_put(ndlp);
4121 }
4122
4123 static void
4124 lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_diag_cg_sig_desc *cgd)
4125 {
4126         /* We are assuming cgd was zero'ed before calling this routine */
4127
4128         /* Configure the congestion detection capability */
4129         cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
4130
4131         /* Descriptor len doesn't include the tag or len fields. */
4132         cgd->desc_len = cpu_to_be32(
4133                 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
4134
4135         /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4136          * xmt_signal_frequency.count already set to 0.
4137          * xmt_signal_frequency.units already set to 0.
4138          */
4139
4140         if (phba->cmf_active_mode == LPFC_CFG_OFF) {
4141                 /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4142                  * rcv_signal_frequency.count already set to 0.
4143                  * rcv_signal_frequency.units already set to 0.
4144                  */
4145                 phba->cgn_sig_freq = 0;
4146                 return;
4147         }
4148         switch (phba->cgn_reg_signal) {
4149         case EDC_CG_SIG_WARN_ONLY:
4150                 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY);
4151                 break;
4152         case EDC_CG_SIG_WARN_ALARM:
4153                 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM);
4154                 break;
4155         default:
4156                 /* rcv_signal_capability left 0 thus no support */
4157                 break;
4158         }
4159
4160         /* We start negotiation with lpfc_fabric_cgn_frequency, after
4161          * the completion we settle on the higher frequency.
4162          */
4163         cgd->rcv_signal_frequency.count =
4164                 cpu_to_be16(lpfc_fabric_cgn_frequency);
4165         cgd->rcv_signal_frequency.units =
4166                 cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
4167 }
4168
4169  /**
4170   * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric.
4171   * @vport: pointer to a host virtual N_Port data structure.
4172   * @retry: retry counter for the command iocb.
4173   *
4174   * This routine issues an ELS EDC to the F-Port Controller to communicate
4175   * this N_Port's support of hardware signals in its Congestion
4176   * Capabilities Descriptor.
4177   *
4178   * Note: This routine does not check if one or more signals are
4179   * set in the cgn_reg_signal parameter.  The caller makes the
4180   * decision to enforce cgn_reg_signal as nonzero or zero depending
4181   * on the conditions.  During Fabric requests, the driver
4182   * requires cgn_reg_signals to be nonzero.  But a dynamic request
4183   * to set the congestion mode to OFF from Monitor or Manage
4184   * would correctly issue an EDC with no signals enabled to
4185   * turn off switch functionality and then update the FW.
4186   *
4187   * Return code
4188   *   0 - Successfully issued edc command
4189   *   1 - Failed to issue edc command
4190   **/
4191 int
4192 lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
4193 {
4194         struct lpfc_hba  *phba = vport->phba;
4195         struct lpfc_iocbq *elsiocb;
4196         struct lpfc_els_edc_req *edc_req;
4197         struct fc_diag_cg_sig_desc *cgn_desc;
4198         u16 cmdsize;
4199         struct lpfc_nodelist *ndlp;
4200         u8 *pcmd = NULL;
4201         u32 edc_req_size, cgn_desc_size;
4202         int rc;
4203
4204         if (vport->port_type == LPFC_NPIV_PORT)
4205                 return -EACCES;
4206
4207         ndlp = lpfc_findnode_did(vport, Fabric_DID);
4208         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
4209                 return -ENODEV;
4210
4211         /* If HBA doesn't support signals, drop into RDF */
4212         if (!phba->cgn_init_reg_signal)
4213                 goto try_rdf;
4214
4215         edc_req_size = sizeof(struct fc_els_edc);
4216         cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc);
4217         cmdsize = edc_req_size + cgn_desc_size;
4218         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
4219                                      ndlp->nlp_DID, ELS_CMD_EDC);
4220         if (!elsiocb)
4221                 goto try_rdf;
4222
4223         /* Configure the payload for the supported Diagnostics capabilities. */
4224         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
4225         memset(pcmd, 0, cmdsize);
4226         edc_req = (struct lpfc_els_edc_req *)pcmd;
4227         edc_req->edc.desc_len = cpu_to_be32(cgn_desc_size);
4228         edc_req->edc.edc_cmd = ELS_EDC;
4229
4230         cgn_desc = &edc_req->cgn_desc;
4231
4232         lpfc_format_edc_cgn_desc(phba, cgn_desc);
4233
4234         phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
4235
4236         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4237                          "4623 Xmit EDC to remote "
4238                          "NPORT x%x reg_sig x%x reg_fpin:x%x\n",
4239                          ndlp->nlp_DID, phba->cgn_reg_signal,
4240                          phba->cgn_reg_fpin);
4241
4242         elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
4243         elsiocb->ndlp = lpfc_nlp_get(ndlp);
4244         if (!elsiocb->ndlp) {
4245                 lpfc_els_free_iocb(phba, elsiocb);
4246                 return -EIO;
4247         }
4248
4249         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4250                               "Issue EDC:     did:x%x refcnt %d",
4251                               ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4252         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4253         if (rc == IOCB_ERROR) {
4254                 /* The additional lpfc_nlp_put will cause the following
4255                  * lpfc_els_free_iocb routine to trigger the rlease of
4256                  * the node.
4257                  */
4258                 lpfc_els_free_iocb(phba, elsiocb);
4259                 lpfc_nlp_put(ndlp);
4260                 goto try_rdf;
4261         }
4262         return 0;
4263 try_rdf:
4264         phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
4265         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4266         rc = lpfc_issue_els_rdf(vport, 0);
4267         return rc;
4268 }
4269
4270 /**
4271  * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
4272  * @vport: pointer to a host virtual N_Port data structure.
4273  * @nlp: pointer to a node-list data structure.
4274  *
4275  * This routine cancels the timer with a delayed IOCB-command retry for
4276  * a @vport's @ndlp. It stops the timer for the delayed function retrial and
4277  * removes the ELS retry event if it presents. In addition, if the
4278  * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
4279  * commands are sent for the @vport's nodes that require issuing discovery
4280  * ADISC.
4281  **/
4282 void
4283 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
4284 {
4285         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4286         struct lpfc_work_evt *evtp;
4287
4288         if (!(nlp->nlp_flag & NLP_DELAY_TMO))
4289                 return;
4290         spin_lock_irq(&nlp->lock);
4291         nlp->nlp_flag &= ~NLP_DELAY_TMO;
4292         spin_unlock_irq(&nlp->lock);
4293         del_timer_sync(&nlp->nlp_delayfunc);
4294         nlp->nlp_last_elscmd = 0;
4295         if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
4296                 list_del_init(&nlp->els_retry_evt.evt_listp);
4297                 /* Decrement nlp reference count held for the delayed retry */
4298                 evtp = &nlp->els_retry_evt;
4299                 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
4300         }
4301         if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
4302                 spin_lock_irq(&nlp->lock);
4303                 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4304                 spin_unlock_irq(&nlp->lock);
4305                 if (vport->num_disc_nodes) {
4306                         if (vport->port_state < LPFC_VPORT_READY) {
4307                                 /* Check if there are more ADISCs to be sent */
4308                                 lpfc_more_adisc(vport);
4309                         } else {
4310                                 /* Check if there are more PLOGIs to be sent */
4311                                 lpfc_more_plogi(vport);
4312                                 if (vport->num_disc_nodes == 0) {
4313                                         spin_lock_irq(shost->host_lock);
4314                                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
4315                                         spin_unlock_irq(shost->host_lock);
4316                                         lpfc_can_disctmo(vport);
4317                                         lpfc_end_rscn(vport);
4318                                 }
4319                         }
4320                 }
4321         }
4322         return;
4323 }
4324
4325 /**
4326  * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
4327  * @t: pointer to the timer function associated data (ndlp).
4328  *
4329  * This routine is invoked by the ndlp delayed-function timer to check
4330  * whether there is any pending ELS retry event(s) with the node. If not, it
4331  * simply returns. Otherwise, if there is at least one ELS delayed event, it
4332  * adds the delayed events to the HBA work list and invokes the
4333  * lpfc_worker_wake_up() routine to wake up worker thread to process the
4334  * event. Note that lpfc_nlp_get() is called before posting the event to
4335  * the work list to hold reference count of ndlp so that it guarantees the
4336  * reference to ndlp will still be available when the worker thread gets
4337  * to the event associated with the ndlp.
4338  **/
4339 void
4340 lpfc_els_retry_delay(struct timer_list *t)
4341 {
4342         struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc);
4343         struct lpfc_vport *vport = ndlp->vport;
4344         struct lpfc_hba   *phba = vport->phba;
4345         unsigned long flags;
4346         struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
4347
4348         spin_lock_irqsave(&phba->hbalock, flags);
4349         if (!list_empty(&evtp->evt_listp)) {
4350                 spin_unlock_irqrestore(&phba->hbalock, flags);
4351                 return;
4352         }
4353
4354         /* We need to hold the node by incrementing the reference
4355          * count until the queued work is done
4356          */
4357         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
4358         if (evtp->evt_arg1) {
4359                 evtp->evt = LPFC_EVT_ELS_RETRY;
4360                 list_add_tail(&evtp->evt_listp, &phba->work_list);
4361                 lpfc_worker_wake_up(phba);
4362         }
4363         spin_unlock_irqrestore(&phba->hbalock, flags);
4364         return;
4365 }
4366
4367 /**
4368  * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
4369  * @ndlp: pointer to a node-list data structure.
4370  *
4371  * This routine is the worker-thread handler for processing the @ndlp delayed
4372  * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
4373  * the last ELS command from the associated ndlp and invokes the proper ELS
4374  * function according to the delayed ELS command to retry the command.
4375  **/
4376 void
4377 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
4378 {
4379         struct lpfc_vport *vport = ndlp->vport;
4380         uint32_t cmd, retry;
4381
4382         spin_lock_irq(&ndlp->lock);
4383         cmd = ndlp->nlp_last_elscmd;
4384         ndlp->nlp_last_elscmd = 0;
4385
4386         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
4387                 spin_unlock_irq(&ndlp->lock);
4388                 return;
4389         }
4390
4391         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4392         spin_unlock_irq(&ndlp->lock);
4393         /*
4394          * If a discovery event readded nlp_delayfunc after timer
4395          * firing and before processing the timer, cancel the
4396          * nlp_delayfunc.
4397          */
4398         del_timer_sync(&ndlp->nlp_delayfunc);
4399         retry = ndlp->nlp_retry;
4400         ndlp->nlp_retry = 0;
4401
4402         switch (cmd) {
4403         case ELS_CMD_FLOGI:
4404                 lpfc_issue_els_flogi(vport, ndlp, retry);
4405                 break;
4406         case ELS_CMD_PLOGI:
4407                 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
4408                         ndlp->nlp_prev_state = ndlp->nlp_state;
4409                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4410                 }
4411                 break;
4412         case ELS_CMD_ADISC:
4413                 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
4414                         ndlp->nlp_prev_state = ndlp->nlp_state;
4415                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4416                 }
4417                 break;
4418         case ELS_CMD_PRLI:
4419         case ELS_CMD_NVMEPRLI:
4420                 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
4421                         ndlp->nlp_prev_state = ndlp->nlp_state;
4422                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
4423                 }
4424                 break;
4425         case ELS_CMD_LOGO:
4426                 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
4427                         ndlp->nlp_prev_state = ndlp->nlp_state;
4428                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
4429                 }
4430                 break;
4431         case ELS_CMD_FDISC:
4432                 if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
4433                         lpfc_issue_els_fdisc(vport, ndlp, retry);
4434                 break;
4435         }
4436         return;
4437 }
4438
4439 /**
4440  * lpfc_link_reset - Issue link reset
4441  * @vport: pointer to a virtual N_Port data structure.
4442  *
4443  * This routine performs link reset by sending INIT_LINK mailbox command.
4444  * For SLI-3 adapter, link attention interrupt is enabled before issuing
4445  * INIT_LINK mailbox command.
4446  *
4447  * Return code
4448  *   0 - Link reset initiated successfully
4449  *   1 - Failed to initiate link reset
4450  **/
4451 int
4452 lpfc_link_reset(struct lpfc_vport *vport)
4453 {
4454         struct lpfc_hba *phba = vport->phba;
4455         LPFC_MBOXQ_t *mbox;
4456         uint32_t control;
4457         int rc;
4458
4459         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4460                          "2851 Attempt link reset\n");
4461         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4462         if (!mbox) {
4463                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4464                                 "2852 Failed to allocate mbox memory");
4465                 return 1;
4466         }
4467
4468         /* Enable Link attention interrupts */
4469         if (phba->sli_rev <= LPFC_SLI_REV3) {
4470                 spin_lock_irq(&phba->hbalock);
4471                 phba->sli.sli_flag |= LPFC_PROCESS_LA;
4472                 control = readl(phba->HCregaddr);
4473                 control |= HC_LAINT_ENA;
4474                 writel(control, phba->HCregaddr);
4475                 readl(phba->HCregaddr); /* flush */
4476                 spin_unlock_irq(&phba->hbalock);
4477         }
4478
4479         lpfc_init_link(phba, mbox, phba->cfg_topology,
4480                        phba->cfg_link_speed);
4481         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4482         mbox->vport = vport;
4483         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4484         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
4485                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4486                                 "2853 Failed to issue INIT_LINK "
4487                                 "mbox command, rc:x%x\n", rc);
4488                 mempool_free(mbox, phba->mbox_mem_pool);
4489                 return 1;
4490         }
4491
4492         return 0;
4493 }
4494
4495 /**
4496  * lpfc_els_retry - Make retry decision on an els command iocb
4497  * @phba: pointer to lpfc hba data structure.
4498  * @cmdiocb: pointer to lpfc command iocb data structure.
4499  * @rspiocb: pointer to lpfc response iocb data structure.
4500  *
4501  * This routine makes a retry decision on an ELS command IOCB, which has
4502  * failed. The following ELS IOCBs use this function for retrying the command
4503  * when previously issued command responsed with error status: FLOGI, PLOGI,
4504  * PRLI, ADISC and FDISC. Based on the ELS command type and the
4505  * returned error status, it makes the decision whether a retry shall be
4506  * issued for the command, and whether a retry shall be made immediately or
4507  * delayed. In the former case, the corresponding ELS command issuing-function
4508  * is called to retry the command. In the later case, the ELS command shall
4509  * be posted to the ndlp delayed event and delayed function timer set to the
4510  * ndlp for the delayed command issusing.
4511  *
4512  * Return code
4513  *   0 - No retry of els command is made
4514  *   1 - Immediate or delayed retry of els command is made
4515  **/
4516 static int
4517 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4518                struct lpfc_iocbq *rspiocb)
4519 {
4520         struct lpfc_vport *vport = cmdiocb->vport;
4521         union lpfc_wqe128 *irsp = &rspiocb->wqe;
4522         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
4523         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
4524         uint32_t *elscmd;
4525         struct ls_rjt stat;
4526         int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
4527         int logerr = 0;
4528         uint32_t cmd = 0;
4529         uint32_t did;
4530         int link_reset = 0, rc;
4531         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
4532         u32 ulp_word4 = get_job_word4(phba, rspiocb);
4533
4534
4535         /* Note: cmd_dmabuf may be 0 for internal driver abort
4536          * of delays ELS command.
4537          */
4538
4539         if (pcmd && pcmd->virt) {
4540                 elscmd = (uint32_t *) (pcmd->virt);
4541                 cmd = *elscmd++;
4542         }
4543
4544         if (ndlp)
4545                 did = ndlp->nlp_DID;
4546         else {
4547                 /* We should only hit this case for retrying PLOGI */
4548                 did = get_job_els_rsp64_did(phba, rspiocb);
4549                 ndlp = lpfc_findnode_did(vport, did);
4550                 if (!ndlp && (cmd != ELS_CMD_PLOGI))
4551                         return 0;
4552         }
4553
4554         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4555                 "Retry ELS:       wd7:x%x wd4:x%x did:x%x",
4556                 *(((uint32_t *)irsp) + 7), ulp_word4, did);
4557
4558         switch (ulp_status) {
4559         case IOSTAT_FCP_RSP_ERROR:
4560                 break;
4561         case IOSTAT_REMOTE_STOP:
4562                 if (phba->sli_rev == LPFC_SLI_REV4) {
4563                         /* This IO was aborted by the target, we don't
4564                          * know the rxid and because we did not send the
4565                          * ABTS we cannot generate and RRQ.
4566                          */
4567                         lpfc_set_rrq_active(phba, ndlp,
4568                                          cmdiocb->sli4_lxritag, 0, 0);
4569                 }
4570                 break;
4571         case IOSTAT_LOCAL_REJECT:
4572                 switch ((ulp_word4 & IOERR_PARAM_MASK)) {
4573                 case IOERR_LOOP_OPEN_FAILURE:
4574                         if (cmd == ELS_CMD_FLOGI) {
4575                                 if (PCI_DEVICE_ID_HORNET ==
4576                                         phba->pcidev->device) {
4577                                         phba->fc_topology = LPFC_TOPOLOGY_LOOP;
4578                                         phba->pport->fc_myDID = 0;
4579                                         phba->alpa_map[0] = 0;
4580                                         phba->alpa_map[1] = 0;
4581                                 }
4582                         }
4583                         if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
4584                                 delay = 1000;
4585                         retry = 1;
4586                         break;
4587
4588                 case IOERR_ILLEGAL_COMMAND:
4589                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4590                                          "0124 Retry illegal cmd x%x "
4591                                          "retry:x%x delay:x%x\n",
4592                                          cmd, cmdiocb->retry, delay);
4593                         retry = 1;
4594                         /* All command's retry policy */
4595                         maxretry = 8;
4596                         if (cmdiocb->retry > 2)
4597                                 delay = 1000;
4598                         break;
4599
4600                 case IOERR_NO_RESOURCES:
4601                         logerr = 1; /* HBA out of resources */
4602                         retry = 1;
4603                         if (cmdiocb->retry > 100)
4604                                 delay = 100;
4605                         maxretry = 250;
4606                         break;
4607
4608                 case IOERR_ILLEGAL_FRAME:
4609                         delay = 100;
4610                         retry = 1;
4611                         break;
4612
4613                 case IOERR_INVALID_RPI:
4614                         if (cmd == ELS_CMD_PLOGI &&
4615                             did == NameServer_DID) {
4616                                 /* Continue forever if plogi to */
4617                                 /* the nameserver fails */
4618                                 maxretry = 0;
4619                                 delay = 100;
4620                         }
4621                         retry = 1;
4622                         break;
4623
4624                 case IOERR_SEQUENCE_TIMEOUT:
4625                         if (cmd == ELS_CMD_PLOGI &&
4626                             did == NameServer_DID &&
4627                             (cmdiocb->retry + 1) == maxretry) {
4628                                 /* Reset the Link */
4629                                 link_reset = 1;
4630                                 break;
4631                         }
4632                         retry = 1;
4633                         delay = 100;
4634                         break;
4635                 case IOERR_SLI_ABORTED:
4636                         /* Retry ELS PLOGI command?
4637                          * Possibly the rport just wasn't ready.
4638                          */
4639                         if (cmd == ELS_CMD_PLOGI) {
4640                                 /* No retry if state change */
4641                                 if (ndlp &&
4642                                     ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
4643                                         goto out_retry;
4644                                 retry = 1;
4645                                 maxretry = 2;
4646                         }
4647                         break;
4648                 }
4649                 break;
4650
4651         case IOSTAT_NPORT_RJT:
4652         case IOSTAT_FABRIC_RJT:
4653                 if (ulp_word4 & RJT_UNAVAIL_TEMP) {
4654                         retry = 1;
4655                         break;
4656                 }
4657                 break;
4658
4659         case IOSTAT_NPORT_BSY:
4660         case IOSTAT_FABRIC_BSY:
4661                 logerr = 1; /* Fabric / Remote NPort out of resources */
4662                 retry = 1;
4663                 break;
4664
4665         case IOSTAT_LS_RJT:
4666                 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
4667                 /* Added for Vendor specifc support
4668                  * Just keep retrying for these Rsn / Exp codes
4669                  */
4670                 if ((vport->fc_flag & FC_PT2PT) &&
4671                     cmd == ELS_CMD_NVMEPRLI) {
4672                         switch (stat.un.b.lsRjtRsnCode) {
4673                         case LSRJT_UNABLE_TPC:
4674                         case LSRJT_INVALID_CMD:
4675                         case LSRJT_LOGICAL_ERR:
4676                         case LSRJT_CMD_UNSUPPORTED:
4677                                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
4678                                                  "0168 NVME PRLI LS_RJT "
4679                                                  "reason %x port doesn't "
4680                                                  "support NVME, disabling NVME\n",
4681                                                  stat.un.b.lsRjtRsnCode);
4682                                 retry = 0;
4683                                 vport->fc_flag |= FC_PT2PT_NO_NVME;
4684                                 goto out_retry;
4685                         }
4686                 }
4687                 switch (stat.un.b.lsRjtRsnCode) {
4688                 case LSRJT_UNABLE_TPC:
4689                         /* The driver has a VALID PLOGI but the rport has
4690                          * rejected the PRLI - can't do it now.  Delay
4691                          * for 1 second and try again.
4692                          *
4693                          * However, if explanation is REQ_UNSUPPORTED there's
4694                          * no point to retry PRLI.
4695                          */
4696                         if ((cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) &&
4697                             stat.un.b.lsRjtRsnCodeExp !=
4698                             LSEXP_REQ_UNSUPPORTED) {
4699                                 delay = 1000;
4700                                 maxretry = lpfc_max_els_tries + 1;
4701                                 retry = 1;
4702                                 break;
4703                         }
4704
4705                         /* Legacy bug fix code for targets with PLOGI delays. */
4706                         if (stat.un.b.lsRjtRsnCodeExp ==
4707                             LSEXP_CMD_IN_PROGRESS) {
4708                                 if (cmd == ELS_CMD_PLOGI) {
4709                                         delay = 1000;
4710                                         maxretry = 48;
4711                                 }
4712                                 retry = 1;
4713                                 break;
4714                         }
4715                         if (stat.un.b.lsRjtRsnCodeExp ==
4716                             LSEXP_CANT_GIVE_DATA) {
4717                                 if (cmd == ELS_CMD_PLOGI) {
4718                                         delay = 1000;
4719                                         maxretry = 48;
4720                                 }
4721                                 retry = 1;
4722                                 break;
4723                         }
4724                         if (cmd == ELS_CMD_PLOGI) {
4725                                 delay = 1000;
4726                                 maxretry = lpfc_max_els_tries + 1;
4727                                 retry = 1;
4728                                 break;
4729                         }
4730                         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4731                           (cmd == ELS_CMD_FDISC) &&
4732                           (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
4733                                 lpfc_printf_vlog(vport, KERN_ERR,
4734                                                  LOG_TRACE_EVENT,
4735                                                  "0125 FDISC Failed (x%x). "
4736                                                  "Fabric out of resources\n",
4737                                                  stat.un.lsRjtError);
4738                                 lpfc_vport_set_state(vport,
4739                                                      FC_VPORT_NO_FABRIC_RSCS);
4740                         }
4741                         break;
4742
4743                 case LSRJT_LOGICAL_BSY:
4744                         if ((cmd == ELS_CMD_PLOGI) ||
4745                             (cmd == ELS_CMD_PRLI) ||
4746                             (cmd == ELS_CMD_NVMEPRLI)) {
4747                                 delay = 1000;
4748                                 maxretry = 48;
4749                         } else if (cmd == ELS_CMD_FDISC) {
4750                                 /* FDISC retry policy */
4751                                 maxretry = 48;
4752                                 if (cmdiocb->retry >= 32)
4753                                         delay = 1000;
4754                         }
4755                         retry = 1;
4756                         break;
4757
4758                 case LSRJT_LOGICAL_ERR:
4759                         /* There are some cases where switches return this
4760                          * error when they are not ready and should be returning
4761                          * Logical Busy. We should delay every time.
4762                          */
4763                         if (cmd == ELS_CMD_FDISC &&
4764                             stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
4765                                 maxretry = 3;
4766                                 delay = 1000;
4767                                 retry = 1;
4768                         } else if (cmd == ELS_CMD_FLOGI &&
4769                                    stat.un.b.lsRjtRsnCodeExp ==
4770                                                 LSEXP_NOTHING_MORE) {
4771                                 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
4772                                 retry = 1;
4773                                 lpfc_printf_vlog(vport, KERN_ERR,
4774                                                  LOG_TRACE_EVENT,
4775                                                  "0820 FLOGI Failed (x%x). "
4776                                                  "BBCredit Not Supported\n",
4777                                                  stat.un.lsRjtError);
4778                         }
4779                         break;
4780
4781                 case LSRJT_PROTOCOL_ERR:
4782                         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4783                           (cmd == ELS_CMD_FDISC) &&
4784                           ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
4785                           (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
4786                           ) {
4787                                 lpfc_printf_vlog(vport, KERN_ERR,
4788                                                  LOG_TRACE_EVENT,
4789                                                  "0122 FDISC Failed (x%x). "
4790                                                  "Fabric Detected Bad WWN\n",
4791                                                  stat.un.lsRjtError);
4792                                 lpfc_vport_set_state(vport,
4793                                                      FC_VPORT_FABRIC_REJ_WWN);
4794                         }
4795                         break;
4796                 case LSRJT_VENDOR_UNIQUE:
4797                         if ((stat.un.b.vendorUnique == 0x45) &&
4798                             (cmd == ELS_CMD_FLOGI)) {
4799                                 goto out_retry;
4800                         }
4801                         break;
4802                 case LSRJT_CMD_UNSUPPORTED:
4803                         /* lpfc nvmet returns this type of LS_RJT when it
4804                          * receives an FCP PRLI because lpfc nvmet only
4805                          * support NVME.  ELS request is terminated for FCP4
4806                          * on this rport.
4807                          */
4808                         if (stat.un.b.lsRjtRsnCodeExp ==
4809                             LSEXP_REQ_UNSUPPORTED) {
4810                                 if (cmd == ELS_CMD_PRLI) {
4811                                         spin_lock_irq(&ndlp->lock);
4812                                         ndlp->nlp_flag |= NLP_FCP_PRLI_RJT;
4813                                         spin_unlock_irq(&ndlp->lock);
4814                                         retry = 0;
4815                                         goto out_retry;
4816                                 }
4817                         }
4818                         break;
4819                 }
4820                 break;
4821
4822         case IOSTAT_INTERMED_RSP:
4823         case IOSTAT_BA_RJT:
4824                 break;
4825
4826         default:
4827                 break;
4828         }
4829
4830         if (link_reset) {
4831                 rc = lpfc_link_reset(vport);
4832                 if (rc) {
4833                         /* Do not give up. Retry PLOGI one more time and attempt
4834                          * link reset if PLOGI fails again.
4835                          */
4836                         retry = 1;
4837                         delay = 100;
4838                         goto out_retry;
4839                 }
4840                 return 1;
4841         }
4842
4843         if (did == FDMI_DID)
4844                 retry = 1;
4845
4846         if ((cmd == ELS_CMD_FLOGI) &&
4847             (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
4848             !lpfc_error_lost_link(ulp_status, ulp_word4)) {
4849                 /* FLOGI retry policy */
4850                 retry = 1;
4851                 /* retry FLOGI forever */
4852                 if (phba->link_flag != LS_LOOPBACK_MODE)
4853                         maxretry = 0;
4854                 else
4855                         maxretry = 2;
4856
4857                 if (cmdiocb->retry >= 100)
4858                         delay = 5000;
4859                 else if (cmdiocb->retry >= 32)
4860                         delay = 1000;
4861         } else if ((cmd == ELS_CMD_FDISC) &&
4862             !lpfc_error_lost_link(ulp_status, ulp_word4)) {
4863                 /* retry FDISCs every second up to devloss */
4864                 retry = 1;
4865                 maxretry = vport->cfg_devloss_tmo;
4866                 delay = 1000;
4867         }
4868
4869         cmdiocb->retry++;
4870         if (maxretry && (cmdiocb->retry >= maxretry)) {
4871                 phba->fc_stat.elsRetryExceeded++;
4872                 retry = 0;
4873         }
4874
4875         if ((vport->load_flag & FC_UNLOADING) != 0)
4876                 retry = 0;
4877
4878 out_retry:
4879         if (retry) {
4880                 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
4881                         /* Stop retrying PLOGI and FDISC if in FCF discovery */
4882                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4883                                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4884                                                  "2849 Stop retry ELS command "
4885                                                  "x%x to remote NPORT x%x, "
4886                                                  "Data: x%x x%x\n", cmd, did,
4887                                                  cmdiocb->retry, delay);
4888                                 return 0;
4889                         }
4890                 }
4891
4892                 /* Retry ELS command <elsCmd> to remote NPORT <did> */
4893                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4894                                  "0107 Retry ELS command x%x to remote "
4895                                  "NPORT x%x Data: x%x x%x\n",
4896                                  cmd, did, cmdiocb->retry, delay);
4897
4898                 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
4899                         ((ulp_status != IOSTAT_LOCAL_REJECT) ||
4900                         ((ulp_word4 & IOERR_PARAM_MASK) !=
4901                         IOERR_NO_RESOURCES))) {
4902                         /* Don't reset timer for no resources */
4903
4904                         /* If discovery / RSCN timer is running, reset it */
4905                         if (timer_pending(&vport->fc_disctmo) ||
4906                             (vport->fc_flag & FC_RSCN_MODE))
4907                                 lpfc_set_disctmo(vport);
4908                 }
4909
4910                 phba->fc_stat.elsXmitRetry++;
4911                 if (ndlp && delay) {
4912                         phba->fc_stat.elsDelayRetry++;
4913                         ndlp->nlp_retry = cmdiocb->retry;
4914
4915                         /* delay is specified in milliseconds */
4916                         mod_timer(&ndlp->nlp_delayfunc,
4917                                 jiffies + msecs_to_jiffies(delay));
4918                         spin_lock_irq(&ndlp->lock);
4919                         ndlp->nlp_flag |= NLP_DELAY_TMO;
4920                         spin_unlock_irq(&ndlp->lock);
4921
4922                         ndlp->nlp_prev_state = ndlp->nlp_state;
4923                         if ((cmd == ELS_CMD_PRLI) ||
4924                             (cmd == ELS_CMD_NVMEPRLI))
4925                                 lpfc_nlp_set_state(vport, ndlp,
4926                                         NLP_STE_PRLI_ISSUE);
4927                         else if (cmd != ELS_CMD_ADISC)
4928                                 lpfc_nlp_set_state(vport, ndlp,
4929                                         NLP_STE_NPR_NODE);
4930                         ndlp->nlp_last_elscmd = cmd;
4931
4932                         return 1;
4933                 }
4934                 switch (cmd) {
4935                 case ELS_CMD_FLOGI:
4936                         lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
4937                         return 1;
4938                 case ELS_CMD_FDISC:
4939                         lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
4940                         return 1;
4941                 case ELS_CMD_PLOGI:
4942                         if (ndlp) {
4943                                 ndlp->nlp_prev_state = ndlp->nlp_state;
4944                                 lpfc_nlp_set_state(vport, ndlp,
4945                                                    NLP_STE_PLOGI_ISSUE);
4946                         }
4947                         lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
4948                         return 1;
4949                 case ELS_CMD_ADISC:
4950                         ndlp->nlp_prev_state = ndlp->nlp_state;
4951                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4952                         lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
4953                         return 1;
4954                 case ELS_CMD_PRLI:
4955                 case ELS_CMD_NVMEPRLI:
4956                         ndlp->nlp_prev_state = ndlp->nlp_state;
4957                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
4958                         lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
4959                         return 1;
4960                 case ELS_CMD_LOGO:
4961                         ndlp->nlp_prev_state = ndlp->nlp_state;
4962                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
4963                         lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
4964                         return 1;
4965                 }
4966         }
4967         /* No retry ELS command <elsCmd> to remote NPORT <did> */
4968         if (logerr) {
4969                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4970                          "0137 No retry ELS command x%x to remote "
4971                          "NPORT x%x: Out of Resources: Error:x%x/%x\n",
4972                          cmd, did, ulp_status,
4973                          ulp_word4);
4974         }
4975         else {
4976                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4977                          "0108 No retry ELS command x%x to remote "
4978                          "NPORT x%x Retried:%d Error:x%x/%x\n",
4979                          cmd, did, cmdiocb->retry, ulp_status,
4980                          ulp_word4);
4981         }
4982         return 0;
4983 }
4984
4985 /**
4986  * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
4987  * @phba: pointer to lpfc hba data structure.
4988  * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
4989  *
4990  * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
4991  * associated with a command IOCB back to the lpfc DMA buffer pool. It first
4992  * checks to see whether there is a lpfc DMA buffer associated with the
4993  * response of the command IOCB. If so, it will be released before releasing
4994  * the lpfc DMA buffer associated with the IOCB itself.
4995  *
4996  * Return code
4997  *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
4998  **/
4999 static int
5000 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
5001 {
5002         struct lpfc_dmabuf *buf_ptr;
5003
5004         /* Free the response before processing the command. */
5005         if (!list_empty(&buf_ptr1->list)) {
5006                 list_remove_head(&buf_ptr1->list, buf_ptr,
5007                                  struct lpfc_dmabuf,
5008                                  list);
5009                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5010                 kfree(buf_ptr);
5011         }
5012         lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
5013         kfree(buf_ptr1);
5014         return 0;
5015 }
5016
5017 /**
5018  * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
5019  * @phba: pointer to lpfc hba data structure.
5020  * @buf_ptr: pointer to the lpfc dma buffer data structure.
5021  *
5022  * This routine releases the lpfc Direct Memory Access (DMA) buffer
5023  * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
5024  * pool.
5025  *
5026  * Return code
5027  *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
5028  **/
5029 static int
5030 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
5031 {
5032         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5033         kfree(buf_ptr);
5034         return 0;
5035 }
5036
5037 /**
5038  * lpfc_els_free_iocb - Free a command iocb and its associated resources
5039  * @phba: pointer to lpfc hba data structure.
5040  * @elsiocb: pointer to lpfc els command iocb data structure.
5041  *
5042  * This routine frees a command IOCB and its associated resources. The
5043  * command IOCB data structure contains the reference to various associated
5044  * resources, these fields must be set to NULL if the associated reference
5045  * not present:
5046  *   cmd_dmabuf - reference to cmd.
5047  *   cmd_dmabuf->next - reference to rsp
5048  *   rsp_dmabuf - unused
5049  *   bpl_dmabuf - reference to bpl
5050  *
5051  * It first properly decrements the reference count held on ndlp for the
5052  * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
5053  * set, it invokes the lpfc_els_free_data() routine to release the Direct
5054  * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
5055  * adds the DMA buffer the @phba data structure for the delayed release.
5056  * If reference to the Buffer Pointer List (BPL) is present, the
5057  * lpfc_els_free_bpl() routine is invoked to release the DMA memory
5058  * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
5059  * invoked to release the IOCB data structure back to @phba IOCBQ list.
5060  *
5061  * Return code
5062  *   0 - Success (currently, always return 0)
5063  **/
5064 int
5065 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
5066 {
5067         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
5068
5069         /* The I/O iocb is complete.  Clear the node and first dmbuf */
5070         elsiocb->ndlp = NULL;
5071
5072         /* cmd_dmabuf = cmd,  cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */
5073         if (elsiocb->cmd_dmabuf) {
5074                 if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) {
5075                         /* Firmware could still be in progress of DMAing
5076                          * payload, so don't free data buffer till after
5077                          * a hbeat.
5078                          */
5079                         elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
5080                         buf_ptr = elsiocb->cmd_dmabuf;
5081                         elsiocb->cmd_dmabuf = NULL;
5082                         if (buf_ptr) {
5083                                 buf_ptr1 = NULL;
5084                                 spin_lock_irq(&phba->hbalock);
5085                                 if (!list_empty(&buf_ptr->list)) {
5086                                         list_remove_head(&buf_ptr->list,
5087                                                 buf_ptr1, struct lpfc_dmabuf,
5088                                                 list);
5089                                         INIT_LIST_HEAD(&buf_ptr1->list);
5090                                         list_add_tail(&buf_ptr1->list,
5091                                                 &phba->elsbuf);
5092                                         phba->elsbuf_cnt++;
5093                                 }
5094                                 INIT_LIST_HEAD(&buf_ptr->list);
5095                                 list_add_tail(&buf_ptr->list, &phba->elsbuf);
5096                                 phba->elsbuf_cnt++;
5097                                 spin_unlock_irq(&phba->hbalock);
5098                         }
5099                 } else {
5100                         buf_ptr1 = elsiocb->cmd_dmabuf;
5101                         lpfc_els_free_data(phba, buf_ptr1);
5102                         elsiocb->cmd_dmabuf = NULL;
5103                 }
5104         }
5105
5106         if (elsiocb->bpl_dmabuf) {
5107                 buf_ptr = elsiocb->bpl_dmabuf;
5108                 lpfc_els_free_bpl(phba, buf_ptr);
5109                 elsiocb->bpl_dmabuf = NULL;
5110         }
5111         lpfc_sli_release_iocbq(phba, elsiocb);
5112         return 0;
5113 }
5114
5115 /**
5116  * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
5117  * @phba: pointer to lpfc hba data structure.
5118  * @cmdiocb: pointer to lpfc command iocb data structure.
5119  * @rspiocb: pointer to lpfc response iocb data structure.
5120  *
5121  * This routine is the completion callback function to the Logout (LOGO)
5122  * Accept (ACC) Response ELS command. This routine is invoked to indicate
5123  * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
5124  * release the ndlp if it has the last reference remaining (reference count
5125  * is 1). If succeeded (meaning ndlp released), it sets the iocb ndlp
5126  * field to NULL to inform the following lpfc_els_free_iocb() routine no
5127  * ndlp reference count needs to be decremented. Otherwise, the ndlp
5128  * reference use-count shall be decremented by the lpfc_els_free_iocb()
5129  * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
5130  * IOCB data structure.
5131  **/
5132 static void
5133 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5134                        struct lpfc_iocbq *rspiocb)
5135 {
5136         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5137         struct lpfc_vport *vport = cmdiocb->vport;
5138         u32 ulp_status, ulp_word4;
5139
5140         ulp_status = get_job_ulpstatus(phba, rspiocb);
5141         ulp_word4 = get_job_word4(phba, rspiocb);
5142
5143         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5144                 "ACC LOGO cmpl:   status:x%x/x%x did:x%x",
5145                 ulp_status, ulp_word4, ndlp->nlp_DID);
5146         /* ACC to LOGO completes to NPort <nlp_DID> */
5147         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5148                          "0109 ACC to LOGO completes to NPort x%x refcnt %d "
5149                          "Data: x%x x%x x%x\n",
5150                          ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
5151                          ndlp->nlp_state, ndlp->nlp_rpi);
5152
5153         /* This clause allows the LOGO ACC to complete and free resources
5154          * for the Fabric Domain Controller.  It does deliberately skip
5155          * the unreg_rpi and release rpi because some fabrics send RDP
5156          * requests after logging out from the initiator.
5157          */
5158         if (ndlp->nlp_type & NLP_FABRIC &&
5159             ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
5160                 goto out;
5161
5162         if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
5163                 /* If PLOGI is being retried, PLOGI completion will cleanup the
5164                  * node. The NLP_NPR_2B_DISC flag needs to be retained to make
5165                  * progress on nodes discovered from last RSCN.
5166                  */
5167                 if ((ndlp->nlp_flag & NLP_DELAY_TMO) &&
5168                     (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI))
5169                         goto out;
5170
5171                 /* NPort Recovery mode or node is just allocated */
5172                 if (!lpfc_nlp_not_used(ndlp)) {
5173                         /* A LOGO is completing and the node is in NPR state.
5174                          * Just unregister the RPI because the node is still
5175                          * required.
5176                          */
5177                         lpfc_unreg_rpi(vport, ndlp);
5178                 } else {
5179                         /* Indicate the node has already released, should
5180                          * not reference to it from within lpfc_els_free_iocb.
5181                          */
5182                         cmdiocb->ndlp = NULL;
5183                 }
5184         }
5185  out:
5186         /*
5187          * The driver received a LOGO from the rport and has ACK'd it.
5188          * At this point, the driver is done so release the IOCB
5189          */
5190         lpfc_els_free_iocb(phba, cmdiocb);
5191         lpfc_nlp_put(ndlp);
5192 }
5193
5194 /**
5195  * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
5196  * @phba: pointer to lpfc hba data structure.
5197  * @pmb: pointer to the driver internal queue element for mailbox command.
5198  *
5199  * This routine is the completion callback function for unregister default
5200  * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
5201  * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
5202  * decrements the ndlp reference count held for this completion callback
5203  * function. After that, it invokes the lpfc_nlp_not_used() to check
5204  * whether there is only one reference left on the ndlp. If so, it will
5205  * perform one more decrement and trigger the release of the ndlp.
5206  **/
5207 void
5208 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5209 {
5210         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
5211         u32 mbx_flag = pmb->mbox_flag;
5212         u32 mbx_cmd = pmb->u.mb.mbxCommand;
5213
5214         if (ndlp) {
5215                 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5216                                  "0006 rpi x%x DID:%x flg:%x %d x%px "
5217                                  "mbx_cmd x%x mbx_flag x%x x%px\n",
5218                                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5219                                  kref_read(&ndlp->kref), ndlp, mbx_cmd,
5220                                  mbx_flag, pmb);
5221
5222                 /* This ends the default/temporary RPI cleanup logic for this
5223                  * ndlp and the node and rpi needs to be released. Free the rpi
5224                  * first on an UNREG_LOGIN and then release the final
5225                  * references.
5226                  */
5227                 spin_lock_irq(&ndlp->lock);
5228                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
5229                 if (mbx_cmd == MBX_UNREG_LOGIN)
5230                         ndlp->nlp_flag &= ~NLP_UNREG_INP;
5231                 spin_unlock_irq(&ndlp->lock);
5232                 lpfc_nlp_put(ndlp);
5233                 lpfc_drop_node(ndlp->vport, ndlp);
5234         }
5235
5236         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
5237 }
5238
5239 /**
5240  * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
5241  * @phba: pointer to lpfc hba data structure.
5242  * @cmdiocb: pointer to lpfc command iocb data structure.
5243  * @rspiocb: pointer to lpfc response iocb data structure.
5244  *
5245  * This routine is the completion callback function for ELS Response IOCB
5246  * command. In normal case, this callback function just properly sets the
5247  * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
5248  * field in the command IOCB is not NULL, the referred mailbox command will
5249  * be send out, and then invokes the lpfc_els_free_iocb() routine to release
5250  * the IOCB.
5251  **/
5252 static void
5253 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5254                   struct lpfc_iocbq *rspiocb)
5255 {
5256         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5257         struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
5258         struct Scsi_Host  *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
5259         IOCB_t  *irsp;
5260         LPFC_MBOXQ_t *mbox = NULL;
5261         u32 ulp_status, ulp_word4, tmo, did, iotag;
5262
5263         if (!vport) {
5264                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5265                                 "3177 ELS response failed\n");
5266                 goto out;
5267         }
5268         if (cmdiocb->context_un.mbox)
5269                 mbox = cmdiocb->context_un.mbox;
5270
5271         ulp_status = get_job_ulpstatus(phba, rspiocb);
5272         ulp_word4 = get_job_word4(phba, rspiocb);
5273         did = get_job_els_rsp64_did(phba, cmdiocb);
5274
5275         if (phba->sli_rev == LPFC_SLI_REV4) {
5276                 tmo = get_wqe_tmo(cmdiocb);
5277                 iotag = get_wqe_reqtag(cmdiocb);
5278         } else {
5279                 irsp = &rspiocb->iocb;
5280                 tmo = irsp->ulpTimeout;
5281                 iotag = irsp->ulpIoTag;
5282         }
5283
5284         /* Check to see if link went down during discovery */
5285         if (!ndlp || lpfc_els_chk_latt(vport)) {
5286                 if (mbox)
5287                         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5288                 goto out;
5289         }
5290
5291         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5292                 "ELS rsp cmpl:    status:x%x/x%x did:x%x",
5293                 ulp_status, ulp_word4, did);
5294         /* ELS response tag <ulpIoTag> completes */
5295         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5296                          "0110 ELS response tag x%x completes "
5297                          "Data: x%x x%x x%x x%x x%x x%x x%x x%x %p %p\n",
5298                          iotag, ulp_status, ulp_word4, tmo,
5299                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5300                          ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp);
5301         if (mbox) {
5302                 if (ulp_status == 0
5303                     && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
5304                         if (!lpfc_unreg_rpi(vport, ndlp) &&
5305                             (!(vport->fc_flag & FC_PT2PT))) {
5306                                 if (ndlp->nlp_state ==  NLP_STE_PLOGI_ISSUE ||
5307                                     ndlp->nlp_state ==
5308                                      NLP_STE_REG_LOGIN_ISSUE) {
5309                                         lpfc_printf_vlog(vport, KERN_INFO,
5310                                                          LOG_DISCOVERY,
5311                                                          "0314 PLOGI recov "
5312                                                          "DID x%x "
5313                                                          "Data: x%x x%x x%x\n",
5314                                                          ndlp->nlp_DID,
5315                                                          ndlp->nlp_state,
5316                                                          ndlp->nlp_rpi,
5317                                                          ndlp->nlp_flag);
5318                                         goto out_free_mbox;
5319                                 }
5320                         }
5321
5322                         /* Increment reference count to ndlp to hold the
5323                          * reference to ndlp for the callback function.
5324                          */
5325                         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5326                         if (!mbox->ctx_ndlp)
5327                                 goto out_free_mbox;
5328
5329                         mbox->vport = vport;
5330                         if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
5331                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5332                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5333                         }
5334                         else {
5335                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
5336                                 ndlp->nlp_prev_state = ndlp->nlp_state;
5337                                 lpfc_nlp_set_state(vport, ndlp,
5338                                            NLP_STE_REG_LOGIN_ISSUE);
5339                         }
5340
5341                         ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
5342                         if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5343                             != MBX_NOT_FINISHED)
5344                                 goto out;
5345
5346                         /* Decrement the ndlp reference count we
5347                          * set for this failed mailbox command.
5348                          */
5349                         lpfc_nlp_put(ndlp);
5350                         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
5351
5352                         /* ELS rsp: Cannot issue reg_login for <NPortid> */
5353                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5354                                 "0138 ELS rsp: Cannot issue reg_login for x%x "
5355                                 "Data: x%x x%x x%x\n",
5356                                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5357                                 ndlp->nlp_rpi);
5358                 }
5359 out_free_mbox:
5360                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5361         }
5362 out:
5363         if (ndlp && shost) {
5364                 spin_lock_irq(&ndlp->lock);
5365                 if (mbox)
5366                         ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
5367                 ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI;
5368                 spin_unlock_irq(&ndlp->lock);
5369         }
5370
5371         /* An SLI4 NPIV instance wants to drop the node at this point under
5372          * these conditions and release the RPI.
5373          */
5374         if (phba->sli_rev == LPFC_SLI_REV4 &&
5375             (vport && vport->port_type == LPFC_NPIV_PORT) &&
5376             !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD) &&
5377             ndlp->nlp_flag & NLP_RELEASE_RPI) {
5378                 if (ndlp->nlp_state !=  NLP_STE_PLOGI_ISSUE &&
5379                     ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
5380                         lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5381                         spin_lock_irq(&ndlp->lock);
5382                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5383                         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5384                         spin_unlock_irq(&ndlp->lock);
5385                         lpfc_drop_node(vport, ndlp);
5386                 }
5387         }
5388
5389         /* Release the originating I/O reference. */
5390         lpfc_els_free_iocb(phba, cmdiocb);
5391         lpfc_nlp_put(ndlp);
5392         return;
5393 }
5394
5395 /**
5396  * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
5397  * @vport: pointer to a host virtual N_Port data structure.
5398  * @flag: the els command code to be accepted.
5399  * @oldiocb: pointer to the original lpfc command iocb data structure.
5400  * @ndlp: pointer to a node-list data structure.
5401  * @mbox: pointer to the driver internal queue element for mailbox command.
5402  *
5403  * This routine prepares and issues an Accept (ACC) response IOCB
5404  * command. It uses the @flag to properly set up the IOCB field for the
5405  * specific ACC response command to be issued and invokes the
5406  * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
5407  * @mbox pointer is passed in, it will be put into the context_un.mbox
5408  * field of the IOCB for the completion callback function to issue the
5409  * mailbox command to the HBA later when callback is invoked.
5410  *
5411  * Note that the ndlp reference count will be incremented by 1 for holding the
5412  * ndlp and the reference to ndlp will be stored into the ndlp field of
5413  * the IOCB for the completion callback function to the corresponding
5414  * response ELS IOCB command.
5415  *
5416  * Return code
5417  *   0 - Successfully issued acc response
5418  *   1 - Failed to issue acc response
5419  **/
5420 int
5421 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
5422                  struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5423                  LPFC_MBOXQ_t *mbox)
5424 {
5425         struct lpfc_hba  *phba = vport->phba;
5426         IOCB_t *icmd;
5427         IOCB_t *oldcmd;
5428         union lpfc_wqe128 *wqe;
5429         union lpfc_wqe128 *oldwqe = &oldiocb->wqe;
5430         struct lpfc_iocbq *elsiocb;
5431         uint8_t *pcmd;
5432         struct serv_parm *sp;
5433         uint16_t cmdsize;
5434         int rc;
5435         ELS_PKT *els_pkt_ptr;
5436         struct fc_els_rdf_resp *rdf_resp;
5437
5438         switch (flag) {
5439         case ELS_CMD_ACC:
5440                 cmdsize = sizeof(uint32_t);
5441                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5442                                              ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5443                 if (!elsiocb) {
5444                         spin_lock_irq(&ndlp->lock);
5445                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5446                         spin_unlock_irq(&ndlp->lock);
5447                         return 1;
5448                 }
5449
5450                 if (phba->sli_rev == LPFC_SLI_REV4) {
5451                         wqe = &elsiocb->wqe;
5452                         /* XRI / rx_id */
5453                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5454                                bf_get(wqe_ctxt_tag,
5455                                       &oldwqe->xmit_els_rsp.wqe_com));
5456
5457                         /* oxid */
5458                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5459                                bf_get(wqe_rcvoxid,
5460                                       &oldwqe->xmit_els_rsp.wqe_com));
5461                 } else {
5462                         icmd = &elsiocb->iocb;
5463                         oldcmd = &oldiocb->iocb;
5464                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5465                         icmd->unsli3.rcvsli3.ox_id =
5466                                 oldcmd->unsli3.rcvsli3.ox_id;
5467                 }
5468
5469                 pcmd = elsiocb->cmd_dmabuf->virt;
5470                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5471                 pcmd += sizeof(uint32_t);
5472
5473                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5474                         "Issue ACC:       did:x%x flg:x%x",
5475                         ndlp->nlp_DID, ndlp->nlp_flag, 0);
5476                 break;
5477         case ELS_CMD_FLOGI:
5478         case ELS_CMD_PLOGI:
5479                 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
5480                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5481                                              ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5482                 if (!elsiocb)
5483                         return 1;
5484
5485                 if (phba->sli_rev == LPFC_SLI_REV4) {
5486                         wqe = &elsiocb->wqe;
5487                         /* XRI / rx_id */
5488                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5489                                bf_get(wqe_ctxt_tag,
5490                                       &oldwqe->xmit_els_rsp.wqe_com));
5491
5492                         /* oxid */
5493                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5494                                bf_get(wqe_rcvoxid,
5495                                       &oldwqe->xmit_els_rsp.wqe_com));
5496                 } else {
5497                         icmd = &elsiocb->iocb;
5498                         oldcmd = &oldiocb->iocb;
5499                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5500                         icmd->unsli3.rcvsli3.ox_id =
5501                                 oldcmd->unsli3.rcvsli3.ox_id;
5502                 }
5503
5504                 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5505
5506                 if (mbox)
5507                         elsiocb->context_un.mbox = mbox;
5508
5509                 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5510                 pcmd += sizeof(uint32_t);
5511                 sp = (struct serv_parm *)pcmd;
5512
5513                 if (flag == ELS_CMD_FLOGI) {
5514                         /* Copy the received service parameters back */
5515                         memcpy(sp, &phba->fc_fabparam,
5516                                sizeof(struct serv_parm));
5517
5518                         /* Clear the F_Port bit */
5519                         sp->cmn.fPort = 0;
5520
5521                         /* Mark all class service parameters as invalid */
5522                         sp->cls1.classValid = 0;
5523                         sp->cls2.classValid = 0;
5524                         sp->cls3.classValid = 0;
5525                         sp->cls4.classValid = 0;
5526
5527                         /* Copy our worldwide names */
5528                         memcpy(&sp->portName, &vport->fc_sparam.portName,
5529                                sizeof(struct lpfc_name));
5530                         memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
5531                                sizeof(struct lpfc_name));
5532                 } else {
5533                         memcpy(pcmd, &vport->fc_sparam,
5534                                sizeof(struct serv_parm));
5535
5536                         sp->cmn.valid_vendor_ver_level = 0;
5537                         memset(sp->un.vendorVersion, 0,
5538                                sizeof(sp->un.vendorVersion));
5539                         sp->cmn.bbRcvSizeMsb &= 0xF;
5540
5541                         /* If our firmware supports this feature, convey that
5542                          * info to the target using the vendor specific field.
5543                          */
5544                         if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
5545                                 sp->cmn.valid_vendor_ver_level = 1;
5546                                 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
5547                                 sp->un.vv.flags =
5548                                         cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
5549                         }
5550                 }
5551
5552                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5553                         "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x",
5554                         ndlp->nlp_DID, ndlp->nlp_flag, 0);
5555                 break;
5556         case ELS_CMD_PRLO:
5557                 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
5558                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5559                                              ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
5560                 if (!elsiocb)
5561                         return 1;
5562
5563                 if (phba->sli_rev == LPFC_SLI_REV4) {
5564                         wqe = &elsiocb->wqe;
5565                         /* XRI / rx_id */
5566                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5567                                bf_get(wqe_ctxt_tag,
5568                                       &oldwqe->xmit_els_rsp.wqe_com));
5569
5570                         /* oxid */
5571                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5572                                bf_get(wqe_rcvoxid,
5573                                       &oldwqe->xmit_els_rsp.wqe_com));
5574                 } else {
5575                         icmd = &elsiocb->iocb;
5576                         oldcmd = &oldiocb->iocb;
5577                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5578                         icmd->unsli3.rcvsli3.ox_id =
5579                                 oldcmd->unsli3.rcvsli3.ox_id;
5580                 }
5581
5582                 pcmd = (u8 *) elsiocb->cmd_dmabuf->virt;
5583
5584                 memcpy(pcmd, oldiocb->cmd_dmabuf->virt,
5585                        sizeof(uint32_t) + sizeof(PRLO));
5586                 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
5587                 els_pkt_ptr = (ELS_PKT *) pcmd;
5588                 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
5589
5590                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5591                         "Issue ACC PRLO:  did:x%x flg:x%x",
5592                         ndlp->nlp_DID, ndlp->nlp_flag, 0);
5593                 break;
5594         case ELS_CMD_RDF:
5595                 cmdsize = sizeof(*rdf_resp);
5596                 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5597                                              ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5598                 if (!elsiocb)
5599                         return 1;
5600
5601                 if (phba->sli_rev == LPFC_SLI_REV4) {
5602                         wqe = &elsiocb->wqe;
5603                         /* XRI / rx_id */
5604                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5605                                bf_get(wqe_ctxt_tag,
5606                                       &oldwqe->xmit_els_rsp.wqe_com));
5607
5608                         /* oxid */
5609                         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5610                                bf_get(wqe_rcvoxid,
5611                                       &oldwqe->xmit_els_rsp.wqe_com));
5612                 } else {
5613                         icmd = &elsiocb->iocb;
5614                         oldcmd = &oldiocb->iocb;
5615                         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5616                         icmd->unsli3.rcvsli3.ox_id =
5617                                 oldcmd->unsli3.rcvsli3.ox_id;
5618                 }
5619
5620                 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5621                 rdf_resp = (struct fc_els_rdf_resp *)pcmd;
5622                 memset(rdf_resp, 0, sizeof(*rdf_resp));
5623                 rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC;
5624
5625                 /* FC-LS-5 specifies desc_list_len shall be set to 12 */
5626                 rdf_resp->desc_list_len = cpu_to_be32(12);
5627
5628                 /* FC-LS-5 specifies LS REQ Information descriptor */
5629                 rdf_resp->lsri.desc_tag = cpu_to_be32(1);
5630                 rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32));
5631                 rdf_resp->lsri.rqst_w0.cmd = ELS_RDF;
5632                 break;
5633         default:
5634                 return 1;
5635         }
5636         if (ndlp->nlp_flag & NLP_LOGO_ACC) {
5637                 spin_lock_irq(&ndlp->lock);
5638                 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5639                         ndlp->nlp_flag & NLP_REG_LOGIN_SEND))
5640                         ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5641                 spin_unlock_irq(&ndlp->lock);
5642                 elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc;
5643         } else {
5644                 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5645         }
5646
5647         phba->fc_stat.elsXmitACC++;
5648         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5649         if (!elsiocb->ndlp) {
5650                 lpfc_els_free_iocb(phba, elsiocb);
5651                 return 1;
5652         }
5653
5654         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5655         if (rc == IOCB_ERROR) {
5656                 lpfc_els_free_iocb(phba, elsiocb);
5657                 lpfc_nlp_put(ndlp);
5658                 return 1;
5659         }
5660
5661         /* Xmit ELS ACC response tag <ulpIoTag> */
5662         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5663                          "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
5664                          "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
5665                          "RPI: x%x, fc_flag x%x refcnt %d\n",
5666                          rc, elsiocb->iotag, elsiocb->sli4_xritag,
5667                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5668                          ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref));
5669         return 0;
5670 }
5671
5672 /**
5673  * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
5674  * @vport: pointer to a virtual N_Port data structure.
5675  * @rejectError: reject response to issue
5676  * @oldiocb: pointer to the original lpfc command iocb data structure.
5677  * @ndlp: pointer to a node-list data structure.
5678  * @mbox: pointer to the driver internal queue element for mailbox command.
5679  *
5680  * This routine prepares and issue an Reject (RJT) response IOCB
5681  * command. If a @mbox pointer is passed in, it will be put into the
5682  * context_un.mbox field of the IOCB for the completion callback function
5683  * to issue to the HBA later.
5684  *
5685  * Note that the ndlp reference count will be incremented by 1 for holding the
5686  * ndlp and the reference to ndlp will be stored into the ndlp field of
5687  * the IOCB for the completion callback function to the reject response
5688  * ELS IOCB command.
5689  *
5690  * Return code
5691  *   0 - Successfully issued reject response
5692  *   1 - Failed to issue reject response
5693  **/
5694 int
5695 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
5696                     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5697                     LPFC_MBOXQ_t *mbox)
5698 {
5699         int rc;
5700         struct lpfc_hba  *phba = vport->phba;
5701         IOCB_t *icmd;
5702         IOCB_t *oldcmd;
5703         union lpfc_wqe128 *wqe;
5704         struct lpfc_iocbq *elsiocb;
5705         uint8_t *pcmd;
5706         uint16_t cmdsize;
5707
5708         cmdsize = 2 * sizeof(uint32_t);
5709         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5710                                      ndlp->nlp_DID, ELS_CMD_LS_RJT);
5711         if (!elsiocb)
5712                 return 1;
5713
5714         if (phba->sli_rev == LPFC_SLI_REV4) {
5715                 wqe = &elsiocb->wqe;
5716                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5717                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
5718                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5719                        get_job_rcvoxid(phba, oldiocb));
5720         } else {
5721                 icmd = &elsiocb->iocb;
5722                 oldcmd = &oldiocb->iocb;
5723                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5724                 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5725         }
5726
5727         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5728
5729         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
5730         pcmd += sizeof(uint32_t);
5731         *((uint32_t *) (pcmd)) = rejectError;
5732
5733         if (mbox)
5734                 elsiocb->context_un.mbox = mbox;
5735
5736         /* Xmit ELS RJT <err> response tag <ulpIoTag> */
5737         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5738                          "0129 Xmit ELS RJT x%x response tag x%x "
5739                          "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
5740                          "rpi x%x\n",
5741                          rejectError, elsiocb->iotag,
5742                          get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID,
5743                          ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
5744         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5745                 "Issue LS_RJT:    did:x%x flg:x%x err:x%x",
5746                 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
5747
5748         phba->fc_stat.elsXmitLSRJT++;
5749         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5750         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5751         if (!elsiocb->ndlp) {
5752                 lpfc_els_free_iocb(phba, elsiocb);
5753                 return 1;
5754         }
5755
5756         /* The NPIV instance is rejecting this unsolicited ELS. Make sure the
5757          * node's assigned RPI gets released provided this node is not already
5758          * registered with the transport.
5759          */
5760         if (phba->sli_rev == LPFC_SLI_REV4 &&
5761             vport->port_type == LPFC_NPIV_PORT &&
5762             !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
5763                 spin_lock_irq(&ndlp->lock);
5764                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5765                 spin_unlock_irq(&ndlp->lock);
5766         }
5767
5768         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5769         if (rc == IOCB_ERROR) {
5770                 lpfc_els_free_iocb(phba, elsiocb);
5771                 lpfc_nlp_put(ndlp);
5772                 return 1;
5773         }
5774
5775         return 0;
5776 }
5777
5778  /**
5779   * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric.
5780   * @vport: pointer to a host virtual N_Port data structure.
5781   * @cmdiocb: pointer to the original lpfc command iocb data structure.
5782   * @ndlp: NPort to where rsp is directed
5783   *
5784   * This routine issues an EDC ACC RSP to the F-Port Controller to communicate
5785   * this N_Port's support of hardware signals in its Congestion
5786   * Capabilities Descriptor.
5787   *
5788   * Return code
5789   *   0 - Successfully issued edc rsp command
5790   *   1 - Failed to issue edc rsp command
5791   **/
5792 static int
5793 lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5794                        struct lpfc_nodelist *ndlp)
5795 {
5796         struct lpfc_hba  *phba = vport->phba;
5797         struct lpfc_els_edc_rsp *edc_rsp;
5798         struct lpfc_iocbq *elsiocb;
5799         IOCB_t *icmd, *cmd;
5800         union lpfc_wqe128 *wqe;
5801         uint8_t *pcmd;
5802         int cmdsize, rc;
5803
5804         cmdsize = sizeof(struct lpfc_els_edc_rsp);
5805         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry,
5806                                      ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5807         if (!elsiocb)
5808                 return 1;
5809
5810         if (phba->sli_rev == LPFC_SLI_REV4) {
5811                 wqe = &elsiocb->wqe;
5812                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5813                        get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */
5814                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5815                        get_job_rcvoxid(phba, cmdiocb));
5816         } else {
5817                 icmd = &elsiocb->iocb;
5818                 cmd = &cmdiocb->iocb;
5819                 icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */
5820                 icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id;
5821         }
5822
5823         pcmd = elsiocb->cmd_dmabuf->virt;
5824         memset(pcmd, 0, cmdsize);
5825
5826         edc_rsp = (struct lpfc_els_edc_rsp *)pcmd;
5827         edc_rsp->edc_rsp.acc_hdr.la_cmd = ELS_LS_ACC;
5828         edc_rsp->edc_rsp.desc_list_len = cpu_to_be32(
5829                 FC_TLV_DESC_LENGTH_FROM_SZ(struct lpfc_els_edc_rsp));
5830         edc_rsp->edc_rsp.lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO);
5831         edc_rsp->edc_rsp.lsri.desc_len = cpu_to_be32(
5832                 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));
5833         edc_rsp->edc_rsp.lsri.rqst_w0.cmd = ELS_EDC;
5834         lpfc_format_edc_cgn_desc(phba, &edc_rsp->cgn_desc);
5835
5836         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5837                               "Issue EDC ACC:      did:x%x flg:x%x refcnt %d",
5838                               ndlp->nlp_DID, ndlp->nlp_flag,
5839                               kref_read(&ndlp->kref));
5840         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5841
5842         phba->fc_stat.elsXmitACC++;
5843         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5844         if (!elsiocb->ndlp) {
5845                 lpfc_els_free_iocb(phba, elsiocb);
5846                 return 1;
5847         }
5848
5849         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5850         if (rc == IOCB_ERROR) {
5851                 lpfc_els_free_iocb(phba, elsiocb);
5852                 lpfc_nlp_put(ndlp);
5853                 return 1;
5854         }
5855
5856         /* Xmit ELS ACC response tag <ulpIoTag> */
5857         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5858                          "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, "
5859                          "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
5860                          "RPI: x%x, fc_flag x%x\n",
5861                          rc, elsiocb->iotag, elsiocb->sli4_xritag,
5862                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5863                          ndlp->nlp_rpi, vport->fc_flag);
5864
5865         return 0;
5866 }
5867
5868 /**
5869  * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
5870  * @vport: pointer to a virtual N_Port data structure.
5871  * @oldiocb: pointer to the original lpfc command iocb data structure.
5872  * @ndlp: pointer to a node-list data structure.
5873  *
5874  * This routine prepares and issues an Accept (ACC) response to Address
5875  * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
5876  * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
5877  *
5878  * Note that the ndlp reference count will be incremented by 1 for holding the
5879  * ndlp and the reference to ndlp will be stored into the ndlp field of
5880  * the IOCB for the completion callback function to the ADISC Accept response
5881  * ELS IOCB command.
5882  *
5883  * Return code
5884  *   0 - Successfully issued acc adisc response
5885  *   1 - Failed to issue adisc acc response
5886  **/
5887 int
5888 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
5889                        struct lpfc_nodelist *ndlp)
5890 {
5891         struct lpfc_hba  *phba = vport->phba;
5892         ADISC *ap;
5893         IOCB_t *icmd, *oldcmd;
5894         union lpfc_wqe128 *wqe;
5895         struct lpfc_iocbq *elsiocb;
5896         uint8_t *pcmd;
5897         uint16_t cmdsize;
5898         int rc;
5899         u32 ulp_context;
5900
5901         cmdsize = sizeof(uint32_t) + sizeof(ADISC);
5902         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5903                                      ndlp->nlp_DID, ELS_CMD_ACC);
5904         if (!elsiocb)
5905                 return 1;
5906
5907         if (phba->sli_rev == LPFC_SLI_REV4) {
5908                 wqe = &elsiocb->wqe;
5909                 /* XRI / rx_id */
5910                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5911                        get_job_ulpcontext(phba, oldiocb));
5912                 ulp_context = get_job_ulpcontext(phba, elsiocb);
5913                 /* oxid */
5914                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5915                        get_job_rcvoxid(phba, oldiocb));
5916         } else {
5917                 icmd = &elsiocb->iocb;
5918                 oldcmd = &oldiocb->iocb;
5919                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5920                 ulp_context = elsiocb->iocb.ulpContext;
5921                 icmd->unsli3.rcvsli3.ox_id =
5922                         oldcmd->unsli3.rcvsli3.ox_id;
5923         }
5924
5925         /* Xmit ADISC ACC response tag <ulpIoTag> */
5926         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5927                          "0130 Xmit ADISC ACC response iotag x%x xri: "
5928                          "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
5929                          elsiocb->iotag, ulp_context,
5930                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5931                          ndlp->nlp_rpi);
5932         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5933
5934         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5935         pcmd += sizeof(uint32_t);
5936
5937         ap = (ADISC *) (pcmd);
5938         ap->hardAL_PA = phba->fc_pref_ALPA;
5939         memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
5940         memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
5941         ap->DID = be32_to_cpu(vport->fc_myDID);
5942
5943         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5944                       "Issue ACC ADISC: did:x%x flg:x%x refcnt %d",
5945                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
5946
5947         phba->fc_stat.elsXmitACC++;
5948         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5949         elsiocb->ndlp = lpfc_nlp_get(ndlp);
5950         if (!elsiocb->ndlp) {
5951                 lpfc_els_free_iocb(phba, elsiocb);
5952                 return 1;
5953         }
5954
5955         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5956         if (rc == IOCB_ERROR) {
5957                 lpfc_els_free_iocb(phba, elsiocb);
5958                 lpfc_nlp_put(ndlp);
5959                 return 1;
5960         }
5961
5962         return 0;
5963 }
5964
5965 /**
5966  * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
5967  * @vport: pointer to a virtual N_Port data structure.
5968  * @oldiocb: pointer to the original lpfc command iocb data structure.
5969  * @ndlp: pointer to a node-list data structure.
5970  *
5971  * This routine prepares and issues an Accept (ACC) response to Process
5972  * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
5973  * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
5974  *
5975  * Note that the ndlp reference count will be incremented by 1 for holding the
5976  * ndlp and the reference to ndlp will be stored into the ndlp field of
5977  * the IOCB for the completion callback function to the PRLI Accept response
5978  * ELS IOCB command.
5979  *
5980  * Return code
5981  *   0 - Successfully issued acc prli response
5982  *   1 - Failed to issue acc prli response
5983  **/
5984 int
5985 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
5986                       struct lpfc_nodelist *ndlp)
5987 {
5988         struct lpfc_hba  *phba = vport->phba;
5989         PRLI *npr;
5990         struct lpfc_nvme_prli *npr_nvme;
5991         lpfc_vpd_t *vpd;
5992         IOCB_t *icmd;
5993         IOCB_t *oldcmd;
5994         union lpfc_wqe128 *wqe;
5995         struct lpfc_iocbq *elsiocb;
5996         uint8_t *pcmd;
5997         uint16_t cmdsize;
5998         uint32_t prli_fc4_req, *req_payload;
5999         struct lpfc_dmabuf *req_buf;
6000         int rc;
6001         u32 elsrspcmd, ulp_context;
6002
6003         /* Need the incoming PRLI payload to determine if the ACC is for an
6004          * FC4 or NVME PRLI type.  The PRLI type is at word 1.
6005          */
6006         req_buf = oldiocb->cmd_dmabuf;
6007         req_payload = (((uint32_t *)req_buf->virt) + 1);
6008
6009         /* PRLI type payload is at byte 3 for FCP or NVME. */
6010         prli_fc4_req = be32_to_cpu(*req_payload);
6011         prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
6012         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6013                          "6127 PRLI_ACC:  Req Type x%x, Word1 x%08x\n",
6014                          prli_fc4_req, *((uint32_t *)req_payload));
6015
6016         if (prli_fc4_req == PRLI_FCP_TYPE) {
6017                 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
6018                 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
6019         } else if (prli_fc4_req & PRLI_NVME_TYPE) {
6020                 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
6021                 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
6022         } else {
6023                 return 1;
6024         }
6025
6026         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6027                                      ndlp->nlp_DID, elsrspcmd);
6028         if (!elsiocb)
6029                 return 1;
6030
6031         if (phba->sli_rev == LPFC_SLI_REV4) {
6032                 wqe = &elsiocb->wqe;
6033                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6034                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6035                 ulp_context = get_job_ulpcontext(phba, elsiocb);
6036                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6037                        get_job_rcvoxid(phba, oldiocb));
6038         } else {
6039                 icmd = &elsiocb->iocb;
6040                 oldcmd = &oldiocb->iocb;
6041                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6042                 ulp_context = elsiocb->iocb.ulpContext;
6043                 icmd->unsli3.rcvsli3.ox_id =
6044                         oldcmd->unsli3.rcvsli3.ox_id;
6045         }
6046
6047         /* Xmit PRLI ACC response tag <ulpIoTag> */
6048         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6049                          "0131 Xmit PRLI ACC response tag x%x xri x%x, "
6050                          "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
6051                          elsiocb->iotag, ulp_context,
6052                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6053                          ndlp->nlp_rpi);
6054         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6055         memset(pcmd, 0, cmdsize);
6056
6057         *((uint32_t *)(pcmd)) = elsrspcmd;
6058         pcmd += sizeof(uint32_t);
6059
6060         /* For PRLI, remainder of payload is PRLI parameter page */
6061         vpd = &phba->vpd;
6062
6063         if (prli_fc4_req == PRLI_FCP_TYPE) {
6064                 /*
6065                  * If the remote port is a target and our firmware version
6066                  * is 3.20 or later, set the following bits for FC-TAPE
6067                  * support.
6068                  */
6069                 npr = (PRLI *) pcmd;
6070                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
6071                     (vpd->rev.feaLevelHigh >= 0x02)) {
6072                         npr->ConfmComplAllowed = 1;
6073                         npr->Retry = 1;
6074                         npr->TaskRetryIdReq = 1;
6075                 }
6076                 npr->acceptRspCode = PRLI_REQ_EXECUTED;
6077                 npr->estabImagePair = 1;
6078                 npr->readXferRdyDis = 1;
6079                 npr->ConfmComplAllowed = 1;
6080                 npr->prliType = PRLI_FCP_TYPE;
6081                 npr->initiatorFunc = 1;
6082         } else if (prli_fc4_req & PRLI_NVME_TYPE) {
6083                 /* Respond with an NVME PRLI Type */
6084                 npr_nvme = (struct lpfc_nvme_prli *) pcmd;
6085                 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
6086                 bf_set(prli_estabImagePair, npr_nvme, 0);  /* Should be 0 */
6087                 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
6088                 if (phba->nvmet_support) {
6089                         bf_set(prli_tgt, npr_nvme, 1);
6090                         bf_set(prli_disc, npr_nvme, 1);
6091                         if (phba->cfg_nvme_enable_fb) {
6092                                 bf_set(prli_fba, npr_nvme, 1);
6093
6094                                 /* TBD.  Target mode needs to post buffers
6095                                  * that support the configured first burst
6096                                  * byte size.
6097                                  */
6098                                 bf_set(prli_fb_sz, npr_nvme,
6099                                        phba->cfg_nvmet_fb_size);
6100                         }
6101                 } else {
6102                         bf_set(prli_init, npr_nvme, 1);
6103                 }
6104
6105                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
6106                                  "6015 NVME issue PRLI ACC word1 x%08x "
6107                                  "word4 x%08x word5 x%08x flag x%x, "
6108                                  "fcp_info x%x nlp_type x%x\n",
6109                                  npr_nvme->word1, npr_nvme->word4,
6110                                  npr_nvme->word5, ndlp->nlp_flag,
6111                                  ndlp->nlp_fcp_info, ndlp->nlp_type);
6112                 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
6113                 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
6114                 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
6115         } else
6116                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6117                                  "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
6118                                  prli_fc4_req, ndlp->nlp_fc4_type,
6119                                  ndlp->nlp_DID);
6120
6121         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6122                       "Issue ACC PRLI:  did:x%x flg:x%x",
6123                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6124
6125         phba->fc_stat.elsXmitACC++;
6126         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6127         elsiocb->ndlp =  lpfc_nlp_get(ndlp);
6128         if (!elsiocb->ndlp) {
6129                 lpfc_els_free_iocb(phba, elsiocb);
6130                 return 1;
6131         }
6132
6133         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6134         if (rc == IOCB_ERROR) {
6135                 lpfc_els_free_iocb(phba, elsiocb);
6136                 lpfc_nlp_put(ndlp);
6137                 return 1;
6138         }
6139
6140         return 0;
6141 }
6142
6143 /**
6144  * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
6145  * @vport: pointer to a virtual N_Port data structure.
6146  * @format: rnid command format.
6147  * @oldiocb: pointer to the original lpfc command iocb data structure.
6148  * @ndlp: pointer to a node-list data structure.
6149  *
6150  * This routine issues a Request Node Identification Data (RNID) Accept
6151  * (ACC) response. It constructs the RNID ACC response command according to
6152  * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
6153  * issue the response.
6154  *
6155  * Note that the ndlp reference count will be incremented by 1 for holding the
6156  * ndlp and the reference to ndlp will be stored into the ndlp field of
6157  * the IOCB for the completion callback function.
6158  *
6159  * Return code
6160  *   0 - Successfully issued acc rnid response
6161  *   1 - Failed to issue acc rnid response
6162  **/
6163 static int
6164 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
6165                       struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6166 {
6167         struct lpfc_hba  *phba = vport->phba;
6168         RNID *rn;
6169         IOCB_t *icmd, *oldcmd;
6170         union lpfc_wqe128 *wqe;
6171         struct lpfc_iocbq *elsiocb;
6172         uint8_t *pcmd;
6173         uint16_t cmdsize;
6174         int rc;
6175         u32 ulp_context;
6176
6177         cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
6178                                         + (2 * sizeof(struct lpfc_name));
6179         if (format)
6180                 cmdsize += sizeof(RNID_TOP_DISC);
6181
6182         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6183                                      ndlp->nlp_DID, ELS_CMD_ACC);
6184         if (!elsiocb)
6185                 return 1;
6186
6187         if (phba->sli_rev == LPFC_SLI_REV4) {
6188                 wqe = &elsiocb->wqe;
6189                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6190                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6191                 ulp_context = get_job_ulpcontext(phba, elsiocb);
6192                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6193                        get_job_rcvoxid(phba, oldiocb));
6194         } else {
6195                 icmd = &elsiocb->iocb;
6196                 oldcmd = &oldiocb->iocb;
6197                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6198                 ulp_context = elsiocb->iocb.ulpContext;
6199                 icmd->unsli3.rcvsli3.ox_id =
6200                         oldcmd->unsli3.rcvsli3.ox_id;
6201         }
6202
6203         /* Xmit RNID ACC response tag <ulpIoTag> */
6204         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6205                          "0132 Xmit RNID ACC response tag x%x xri x%x\n",
6206                          elsiocb->iotag, ulp_context);
6207         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6208         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6209         pcmd += sizeof(uint32_t);
6210
6211         memset(pcmd, 0, sizeof(RNID));
6212         rn = (RNID *) (pcmd);
6213         rn->Format = format;
6214         rn->CommonLen = (2 * sizeof(struct lpfc_name));
6215         memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
6216         memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
6217         switch (format) {
6218         case 0:
6219                 rn->SpecificLen = 0;
6220                 break;
6221         case RNID_TOPOLOGY_DISC:
6222                 rn->SpecificLen = sizeof(RNID_TOP_DISC);
6223                 memcpy(&rn->un.topologyDisc.portName,
6224                        &vport->fc_portname, sizeof(struct lpfc_name));
6225                 rn->un.topologyDisc.unitType = RNID_HBA;
6226                 rn->un.topologyDisc.physPort = 0;
6227                 rn->un.topologyDisc.attachedNodes = 0;
6228                 break;
6229         default:
6230                 rn->CommonLen = 0;
6231                 rn->SpecificLen = 0;
6232                 break;
6233         }
6234
6235         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6236                       "Issue ACC RNID:  did:x%x flg:x%x refcnt %d",
6237                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6238
6239         phba->fc_stat.elsXmitACC++;
6240         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6241         elsiocb->ndlp = lpfc_nlp_get(ndlp);
6242         if (!elsiocb->ndlp) {
6243                 lpfc_els_free_iocb(phba, elsiocb);
6244                 return 1;
6245         }
6246
6247         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6248         if (rc == IOCB_ERROR) {
6249                 lpfc_els_free_iocb(phba, elsiocb);
6250                 lpfc_nlp_put(ndlp);
6251                 return 1;
6252         }
6253
6254         return 0;
6255 }
6256
6257 /**
6258  * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
6259  * @vport: pointer to a virtual N_Port data structure.
6260  * @iocb: pointer to the lpfc command iocb data structure.
6261  * @ndlp: pointer to a node-list data structure.
6262  *
6263  * Return
6264  **/
6265 static void
6266 lpfc_els_clear_rrq(struct lpfc_vport *vport,
6267                    struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
6268 {
6269         struct lpfc_hba  *phba = vport->phba;
6270         uint8_t *pcmd;
6271         struct RRQ *rrq;
6272         uint16_t rxid;
6273         uint16_t xri;
6274         struct lpfc_node_rrq *prrq;
6275
6276
6277         pcmd = (uint8_t *)iocb->cmd_dmabuf->virt;
6278         pcmd += sizeof(uint32_t);
6279         rrq = (struct RRQ *)pcmd;
6280         rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
6281         rxid = bf_get(rrq_rxid, rrq);
6282
6283         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6284                         "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
6285                         " x%x x%x\n",
6286                         be32_to_cpu(bf_get(rrq_did, rrq)),
6287                         bf_get(rrq_oxid, rrq),
6288                         rxid,
6289                         get_wqe_reqtag(iocb),
6290                         get_job_ulpcontext(phba, iocb));
6291
6292         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6293                 "Clear RRQ:  did:x%x flg:x%x exchg:x%.08x",
6294                 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
6295         if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
6296                 xri = bf_get(rrq_oxid, rrq);
6297         else
6298                 xri = rxid;
6299         prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
6300         if (prrq)
6301                 lpfc_clr_rrq_active(phba, xri, prrq);
6302         return;
6303 }
6304
6305 /**
6306  * lpfc_els_rsp_echo_acc - Issue echo acc response
6307  * @vport: pointer to a virtual N_Port data structure.
6308  * @data: pointer to echo data to return in the accept.
6309  * @oldiocb: pointer to the original lpfc command iocb data structure.
6310  * @ndlp: pointer to a node-list data structure.
6311  *
6312  * Return code
6313  *   0 - Successfully issued acc echo response
6314  *   1 - Failed to issue acc echo response
6315  **/
6316 static int
6317 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
6318                       struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6319 {
6320         struct lpfc_hba  *phba = vport->phba;
6321         IOCB_t *icmd, *oldcmd;
6322         union lpfc_wqe128 *wqe;
6323         struct lpfc_iocbq *elsiocb;
6324         uint8_t *pcmd;
6325         uint16_t cmdsize;
6326         int rc;
6327         u32 ulp_context;
6328
6329         if (phba->sli_rev == LPFC_SLI_REV4)
6330                 cmdsize = oldiocb->wcqe_cmpl.total_data_placed;
6331         else
6332                 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
6333
6334         /* The accumulated length can exceed the BPL_SIZE.  For
6335          * now, use this as the limit
6336          */
6337         if (cmdsize > LPFC_BPL_SIZE)
6338                 cmdsize = LPFC_BPL_SIZE;
6339         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6340                                      ndlp->nlp_DID, ELS_CMD_ACC);
6341         if (!elsiocb)
6342                 return 1;
6343
6344         if (phba->sli_rev == LPFC_SLI_REV4) {
6345                 wqe = &elsiocb->wqe;
6346                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6347                        get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6348                 ulp_context = get_job_ulpcontext(phba, elsiocb);
6349                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6350                        get_job_rcvoxid(phba, oldiocb));
6351         } else {
6352                 icmd = &elsiocb->iocb;
6353                 oldcmd = &oldiocb->iocb;
6354                 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6355                 ulp_context = elsiocb->iocb.ulpContext;
6356                 icmd->unsli3.rcvsli3.ox_id =
6357                         oldcmd->unsli3.rcvsli3.ox_id;
6358         }
6359
6360         /* Xmit ECHO ACC response tag <ulpIoTag> */
6361         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6362                          "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
6363                          elsiocb->iotag, ulp_context);
6364         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6365         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6366         pcmd += sizeof(uint32_t);
6367         memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
6368
6369         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6370                       "Issue ACC ECHO:  did:x%x flg:x%x refcnt %d",
6371                       ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6372
6373         phba->fc_stat.elsXmitACC++;
6374         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6375         elsiocb->ndlp =  lpfc_nlp_get(ndlp);
6376         if (!elsiocb->ndlp) {
6377                 lpfc_els_free_iocb(phba, elsiocb);
6378                 return 1;
6379         }
6380
6381         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6382         if (rc == IOCB_ERROR) {
6383                 lpfc_els_free_iocb(phba, elsiocb);
6384                 lpfc_nlp_put(ndlp);
6385                 return 1;
6386         }
6387
6388         return 0;
6389 }
6390
6391 /**
6392  * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
6393  * @vport: pointer to a host virtual N_Port data structure.
6394  *
6395  * This routine issues Address Discover (ADISC) ELS commands to those
6396  * N_Ports which are in node port recovery state and ADISC has not been issued
6397  * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
6398  * lpfc_issue_els_adisc() routine, the per @vport number of discover count
6399  * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
6400  * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
6401  * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
6402  * IOCBs quit for later pick up. On the other hand, after walking through
6403  * all the ndlps with the @vport and there is none ADISC IOCB issued, the
6404  * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
6405  * no more ADISC need to be sent.
6406  *
6407  * Return code
6408  *    The number of N_Ports with adisc issued.
6409  **/
6410 int
6411 lpfc_els_disc_adisc(struct lpfc_vport *vport)
6412 {
6413         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6414         struct lpfc_nodelist *ndlp, *next_ndlp;
6415         int sentadisc = 0;
6416
6417         /* go thru NPR nodes and issue any remaining ELS ADISCs */
6418         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6419
6420                 if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
6421                     !(ndlp->nlp_flag & NLP_NPR_ADISC))
6422                         continue;
6423
6424                 spin_lock_irq(&ndlp->lock);
6425                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
6426                 spin_unlock_irq(&ndlp->lock);
6427
6428                 if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
6429                         /* This node was marked for ADISC but was not picked
6430                          * for discovery. This is possible if the node was
6431                          * missing in gidft response.
6432                          *
6433                          * At time of marking node for ADISC, we skipped unreg
6434                          * from backend
6435                          */
6436                         lpfc_nlp_unreg_node(vport, ndlp);
6437                         lpfc_unreg_rpi(vport, ndlp);
6438                         continue;
6439                 }
6440
6441                 ndlp->nlp_prev_state = ndlp->nlp_state;
6442                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
6443                 lpfc_issue_els_adisc(vport, ndlp, 0);
6444                 sentadisc++;
6445                 vport->num_disc_nodes++;
6446                 if (vport->num_disc_nodes >=
6447                                 vport->cfg_discovery_threads) {
6448                         spin_lock_irq(shost->host_lock);
6449                         vport->fc_flag |= FC_NLP_MORE;
6450                         spin_unlock_irq(shost->host_lock);
6451                         break;
6452                 }
6453
6454         }
6455         if (sentadisc == 0) {
6456                 spin_lock_irq(shost->host_lock);
6457                 vport->fc_flag &= ~FC_NLP_MORE;
6458                 spin_unlock_irq(shost->host_lock);
6459         }
6460         return sentadisc;
6461 }
6462
6463 /**
6464  * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
6465  * @vport: pointer to a host virtual N_Port data structure.
6466  *
6467  * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
6468  * which are in node port recovery state, with a @vport. Each time an ELS
6469  * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
6470  * the per @vport number of discover count (num_disc_nodes) shall be
6471  * incremented. If the num_disc_nodes reaches a pre-configured threshold
6472  * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
6473  * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
6474  * later pick up. On the other hand, after walking through all the ndlps with
6475  * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
6476  * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
6477  * PLOGI need to be sent.
6478  *
6479  * Return code
6480  *   The number of N_Ports with plogi issued.
6481  **/
6482 int
6483 lpfc_els_disc_plogi(struct lpfc_vport *vport)
6484 {
6485         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6486         struct lpfc_nodelist *ndlp, *next_ndlp;
6487         int sentplogi = 0;
6488
6489         /* go thru NPR nodes and issue any remaining ELS PLOGIs */
6490         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6491                 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
6492                                 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
6493                                 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
6494                                 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
6495                         ndlp->nlp_prev_state = ndlp->nlp_state;
6496                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6497                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
6498                         sentplogi++;
6499                         vport->num_disc_nodes++;
6500                         if (vport->num_disc_nodes >=
6501                                         vport->cfg_discovery_threads) {
6502                                 spin_lock_irq(shost->host_lock);
6503                                 vport->fc_flag |= FC_NLP_MORE;
6504                                 spin_unlock_irq(shost->host_lock);
6505                                 break;
6506                         }
6507                 }
6508         }
6509
6510         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6511                          "6452 Discover PLOGI %d flag x%x\n",
6512                          sentplogi, vport->fc_flag);
6513
6514         if (sentplogi) {
6515                 lpfc_set_disctmo(vport);
6516         }
6517         else {
6518                 spin_lock_irq(shost->host_lock);
6519                 vport->fc_flag &= ~FC_NLP_MORE;
6520                 spin_unlock_irq(shost->host_lock);
6521         }
6522         return sentplogi;
6523 }
6524
6525 static uint32_t
6526 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
6527                 uint32_t word0)
6528 {
6529
6530         desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
6531         desc->payload.els_req = word0;
6532         desc->length = cpu_to_be32(sizeof(desc->payload));
6533
6534         return sizeof(struct fc_rdp_link_service_desc);
6535 }
6536
6537 static uint32_t
6538 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
6539                 uint8_t *page_a0, uint8_t *page_a2)
6540 {
6541         uint16_t wavelength;
6542         uint16_t temperature;
6543         uint16_t rx_power;
6544         uint16_t tx_bias;
6545         uint16_t tx_power;
6546         uint16_t vcc;
6547         uint16_t flag = 0;
6548         struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
6549         struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
6550
6551         desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
6552
6553         trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
6554                         &page_a0[SSF_TRANSCEIVER_CODE_B4];
6555         trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
6556                         &page_a0[SSF_TRANSCEIVER_CODE_B5];
6557
6558         if ((trasn_code_byte4->fc_sw_laser) ||
6559             (trasn_code_byte5->fc_sw_laser_sl) ||
6560             (trasn_code_byte5->fc_sw_laser_sn)) {  /* check if its short WL */
6561                 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
6562         } else if (trasn_code_byte4->fc_lw_laser) {
6563                 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
6564                         page_a0[SSF_WAVELENGTH_B0];
6565                 if (wavelength == SFP_WAVELENGTH_LC1310)
6566                         flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
6567                 if (wavelength == SFP_WAVELENGTH_LL1550)
6568                         flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
6569         }
6570         /* check if its SFP+ */
6571         flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
6572                         SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
6573                                         << SFP_FLAG_CT_SHIFT;
6574
6575         /* check if its OPTICAL */
6576         flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
6577                         SFP_FLAG_IS_OPTICAL_PORT : 0)
6578                                         << SFP_FLAG_IS_OPTICAL_SHIFT;
6579
6580         temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
6581                 page_a2[SFF_TEMPERATURE_B0]);
6582         vcc = (page_a2[SFF_VCC_B1] << 8 |
6583                 page_a2[SFF_VCC_B0]);
6584         tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
6585                 page_a2[SFF_TXPOWER_B0]);
6586         tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
6587                 page_a2[SFF_TX_BIAS_CURRENT_B0]);
6588         rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
6589                 page_a2[SFF_RXPOWER_B0]);
6590         desc->sfp_info.temperature = cpu_to_be16(temperature);
6591         desc->sfp_info.rx_power = cpu_to_be16(rx_power);
6592         desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
6593         desc->sfp_info.tx_power = cpu_to_be16(tx_power);
6594         desc->sfp_info.vcc = cpu_to_be16(vcc);
6595
6596         desc->sfp_info.flags = cpu_to_be16(flag);
6597         desc->length = cpu_to_be32(sizeof(desc->sfp_info));
6598
6599         return sizeof(struct fc_rdp_sfp_desc);
6600 }
6601
6602 static uint32_t
6603 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
6604                 READ_LNK_VAR *stat)
6605 {
6606         uint32_t type;
6607
6608         desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
6609
6610         type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
6611
6612         desc->info.port_type = cpu_to_be32(type);
6613
6614         desc->info.link_status.link_failure_cnt =
6615                 cpu_to_be32(stat->linkFailureCnt);
6616         desc->info.link_status.loss_of_synch_cnt =
6617                 cpu_to_be32(stat->lossSyncCnt);
6618         desc->info.link_status.loss_of_signal_cnt =
6619                 cpu_to_be32(stat->lossSignalCnt);
6620         desc->info.link_status.primitive_seq_proto_err =
6621                 cpu_to_be32(stat->primSeqErrCnt);
6622         desc->info.link_status.invalid_trans_word =
6623                 cpu_to_be32(stat->invalidXmitWord);
6624         desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
6625
6626         desc->length = cpu_to_be32(sizeof(desc->info));
6627
6628         return sizeof(struct fc_rdp_link_error_status_desc);
6629 }
6630
6631 static uint32_t
6632 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
6633                       struct lpfc_vport *vport)
6634 {
6635         uint32_t bbCredit;
6636
6637         desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
6638
6639         bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
6640                         (vport->fc_sparam.cmn.bbCreditMsb << 8);
6641         desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
6642         if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
6643                 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
6644                         (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
6645                 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
6646         } else {
6647                 desc->bbc_info.attached_port_bbc = 0;
6648         }
6649
6650         desc->bbc_info.rtt = 0;
6651         desc->length = cpu_to_be32(sizeof(desc->bbc_info));
6652
6653         return sizeof(struct fc_rdp_bbc_desc);
6654 }
6655
6656 static uint32_t
6657 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
6658                            struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
6659 {
6660         uint32_t flags = 0;
6661
6662         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6663
6664         desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
6665         desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
6666         desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
6667         desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
6668
6669         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6670                 flags |= RDP_OET_HIGH_ALARM;
6671         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6672                 flags |= RDP_OET_LOW_ALARM;
6673         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6674                 flags |= RDP_OET_HIGH_WARNING;
6675         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6676                 flags |= RDP_OET_LOW_WARNING;
6677
6678         flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
6679         desc->oed_info.function_flags = cpu_to_be32(flags);
6680         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6681         return sizeof(struct fc_rdp_oed_sfp_desc);
6682 }
6683
6684 static uint32_t
6685 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
6686                               struct fc_rdp_oed_sfp_desc *desc,
6687                               uint8_t *page_a2)
6688 {
6689         uint32_t flags = 0;
6690
6691         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6692
6693         desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
6694         desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
6695         desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
6696         desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
6697
6698         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6699                 flags |= RDP_OET_HIGH_ALARM;
6700         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6701                 flags |= RDP_OET_LOW_ALARM;
6702         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6703                 flags |= RDP_OET_HIGH_WARNING;
6704         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6705                 flags |= RDP_OET_LOW_WARNING;
6706
6707         flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
6708         desc->oed_info.function_flags = cpu_to_be32(flags);
6709         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6710         return sizeof(struct fc_rdp_oed_sfp_desc);
6711 }
6712
6713 static uint32_t
6714 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
6715                              struct fc_rdp_oed_sfp_desc *desc,
6716                              uint8_t *page_a2)
6717 {
6718         uint32_t flags = 0;
6719
6720         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6721
6722         desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
6723         desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
6724         desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
6725         desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
6726
6727         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6728                 flags |= RDP_OET_HIGH_ALARM;
6729         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
6730                 flags |= RDP_OET_LOW_ALARM;
6731         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6732                 flags |= RDP_OET_HIGH_WARNING;
6733         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
6734                 flags |= RDP_OET_LOW_WARNING;
6735
6736         flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
6737         desc->oed_info.function_flags = cpu_to_be32(flags);
6738         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6739         return sizeof(struct fc_rdp_oed_sfp_desc);
6740 }
6741
6742 static uint32_t
6743 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
6744                               struct fc_rdp_oed_sfp_desc *desc,
6745                               uint8_t *page_a2)
6746 {
6747         uint32_t flags = 0;
6748
6749         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6750
6751         desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
6752         desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
6753         desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
6754         desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
6755
6756         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6757                 flags |= RDP_OET_HIGH_ALARM;
6758         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
6759                 flags |= RDP_OET_LOW_ALARM;
6760         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6761                 flags |= RDP_OET_HIGH_WARNING;
6762         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
6763                 flags |= RDP_OET_LOW_WARNING;
6764
6765         flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
6766         desc->oed_info.function_flags = cpu_to_be32(flags);
6767         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6768         return sizeof(struct fc_rdp_oed_sfp_desc);
6769 }
6770
6771
6772 static uint32_t
6773 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
6774                               struct fc_rdp_oed_sfp_desc *desc,
6775                               uint8_t *page_a2)
6776 {
6777         uint32_t flags = 0;
6778
6779         desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6780
6781         desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
6782         desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
6783         desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
6784         desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
6785
6786         if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
6787                 flags |= RDP_OET_HIGH_ALARM;
6788         if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
6789                 flags |= RDP_OET_LOW_ALARM;
6790         if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
6791                 flags |= RDP_OET_HIGH_WARNING;
6792         if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
6793                 flags |= RDP_OET_LOW_WARNING;
6794
6795         flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
6796         desc->oed_info.function_flags = cpu_to_be32(flags);
6797         desc->length = cpu_to_be32(sizeof(desc->oed_info));
6798         return sizeof(struct fc_rdp_oed_sfp_desc);
6799 }
6800
6801 static uint32_t
6802 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
6803                       uint8_t *page_a0, struct lpfc_vport *vport)
6804 {
6805         desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
6806         memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
6807         memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
6808         memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
6809         memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
6810         memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
6811         desc->length = cpu_to_be32(sizeof(desc->opd_info));
6812         return sizeof(struct fc_rdp_opd_sfp_desc);
6813 }
6814
6815 static uint32_t
6816 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
6817 {
6818         if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
6819                 return 0;
6820         desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
6821
6822         desc->info.CorrectedBlocks =
6823                 cpu_to_be32(stat->fecCorrBlkCount);
6824         desc->info.UncorrectableBlocks =
6825                 cpu_to_be32(stat->fecUncorrBlkCount);
6826
6827         desc->length = cpu_to_be32(sizeof(desc->info));
6828
6829         return sizeof(struct fc_fec_rdp_desc);
6830 }
6831
6832 static uint32_t
6833 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
6834 {
6835         uint16_t rdp_cap = 0;
6836         uint16_t rdp_speed;
6837
6838         desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
6839
6840         switch (phba->fc_linkspeed) {
6841         case LPFC_LINK_SPEED_1GHZ:
6842                 rdp_speed = RDP_PS_1GB;
6843                 break;
6844         case LPFC_LINK_SPEED_2GHZ:
6845                 rdp_speed = RDP_PS_2GB;
6846                 break;
6847         case LPFC_LINK_SPEED_4GHZ:
6848                 rdp_speed = RDP_PS_4GB;
6849                 break;
6850         case LPFC_LINK_SPEED_8GHZ:
6851                 rdp_speed = RDP_PS_8GB;
6852                 break;
6853         case LPFC_LINK_SPEED_10GHZ:
6854                 rdp_speed = RDP_PS_10GB;
6855                 break;
6856         case LPFC_LINK_SPEED_16GHZ:
6857                 rdp_speed = RDP_PS_16GB;
6858                 break;
6859         case LPFC_LINK_SPEED_32GHZ:
6860                 rdp_speed = RDP_PS_32GB;
6861                 break;
6862         case LPFC_LINK_SPEED_64GHZ:
6863                 rdp_speed = RDP_PS_64GB;
6864                 break;
6865         case LPFC_LINK_SPEED_128GHZ:
6866                 rdp_speed = RDP_PS_128GB;
6867                 break;
6868         case LPFC_LINK_SPEED_256GHZ:
6869                 rdp_speed = RDP_PS_256GB;
6870                 break;
6871         default:
6872                 rdp_speed = RDP_PS_UNKNOWN;
6873                 break;
6874         }
6875
6876         desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
6877
6878         if (phba->lmt & LMT_256Gb)
6879                 rdp_cap |= RDP_PS_256GB;
6880         if (phba->lmt & LMT_128Gb)
6881                 rdp_cap |= RDP_PS_128GB;
6882         if (phba->lmt & LMT_64Gb)
6883                 rdp_cap |= RDP_PS_64GB;
6884         if (phba->lmt & LMT_32Gb)
6885                 rdp_cap |= RDP_PS_32GB;
6886         if (phba->lmt & LMT_16Gb)
6887                 rdp_cap |= RDP_PS_16GB;
6888         if (phba->lmt & LMT_10Gb)
6889                 rdp_cap |= RDP_PS_10GB;
6890         if (phba->lmt & LMT_8Gb)
6891                 rdp_cap |= RDP_PS_8GB;
6892         if (phba->lmt & LMT_4Gb)
6893                 rdp_cap |= RDP_PS_4GB;
6894         if (phba->lmt & LMT_2Gb)
6895                 rdp_cap |= RDP_PS_2GB;
6896         if (phba->lmt & LMT_1Gb)
6897                 rdp_cap |= RDP_PS_1GB;
6898
6899         if (rdp_cap == 0)
6900                 rdp_cap = RDP_CAP_UNKNOWN;
6901         if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
6902                 rdp_cap |= RDP_CAP_USER_CONFIGURED;
6903
6904         desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
6905         desc->length = cpu_to_be32(sizeof(desc->info));
6906         return sizeof(struct fc_rdp_port_speed_desc);
6907 }
6908
6909 static uint32_t
6910 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
6911                 struct lpfc_vport *vport)
6912 {
6913
6914         desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
6915
6916         memcpy(desc->port_names.wwnn, &vport->fc_nodename,
6917                         sizeof(desc->port_names.wwnn));
6918
6919         memcpy(desc->port_names.wwpn, &vport->fc_portname,
6920                         sizeof(desc->port_names.wwpn));
6921
6922         desc->length = cpu_to_be32(sizeof(desc->port_names));
6923         return sizeof(struct fc_rdp_port_name_desc);
6924 }
6925
6926 static uint32_t
6927 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
6928                 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6929 {
6930
6931         desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
6932         if (vport->fc_flag & FC_FABRIC) {
6933                 memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
6934                        sizeof(desc->port_names.wwnn));
6935
6936                 memcpy(desc->port_names.wwpn, &vport->fabric_portname,
6937                        sizeof(desc->port_names.wwpn));
6938         } else {  /* Point to Point */
6939                 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
6940                        sizeof(desc->port_names.wwnn));
6941
6942                 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
6943                        sizeof(desc->port_names.wwpn));
6944         }
6945
6946         desc->length = cpu_to_be32(sizeof(desc->port_names));
6947         return sizeof(struct fc_rdp_port_name_desc);
6948 }
6949
6950 static void
6951 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
6952                 int status)
6953 {
6954         struct lpfc_nodelist *ndlp = rdp_context->ndlp;
6955         struct lpfc_vport *vport = ndlp->vport;
6956         struct lpfc_iocbq *elsiocb;
6957         struct ulp_bde64 *bpl;
6958         IOCB_t *icmd;
6959         union lpfc_wqe128 *wqe;
6960         uint8_t *pcmd;
6961         struct ls_rjt *stat;
6962         struct fc_rdp_res_frame *rdp_res;
6963         uint32_t cmdsize, len;
6964         uint16_t *flag_ptr;
6965         int rc;
6966         u32 ulp_context;
6967
6968         if (status != SUCCESS)
6969                 goto error;
6970
6971         /* This will change once we know the true size of the RDP payload */
6972         cmdsize = sizeof(struct fc_rdp_res_frame);
6973
6974         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
6975                                 lpfc_max_els_tries, rdp_context->ndlp,
6976                                 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
6977         if (!elsiocb)
6978                 goto free_rdp_context;
6979
6980         ulp_context = get_job_ulpcontext(phba, elsiocb);
6981         if (phba->sli_rev == LPFC_SLI_REV4) {
6982                 wqe = &elsiocb->wqe;
6983                 /* ox-id of the frame */
6984                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6985                        rdp_context->ox_id);
6986                 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
6987                        rdp_context->rx_id);
6988         } else {
6989                 icmd = &elsiocb->iocb;
6990                 icmd->ulpContext = rdp_context->rx_id;
6991                 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
6992         }
6993
6994         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6995                         "2171 Xmit RDP response tag x%x xri x%x, "
6996                         "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x",
6997                         elsiocb->iotag, ulp_context,
6998                         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6999                         ndlp->nlp_rpi);
7000         rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt;
7001         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7002         memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
7003         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7004
7005         /* Update Alarm and Warning */
7006         flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
7007         phba->sfp_alarm |= *flag_ptr;
7008         flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
7009         phba->sfp_warning |= *flag_ptr;
7010
7011         /* For RDP payload */
7012         len = 8;
7013         len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
7014                                          (len + pcmd), ELS_CMD_RDP);
7015
7016         len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
7017                         rdp_context->page_a0, rdp_context->page_a2);
7018         len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
7019                                   phba);
7020         len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
7021                                        (len + pcmd), &rdp_context->link_stat);
7022         len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
7023                                              (len + pcmd), vport);
7024         len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
7025                                         (len + pcmd), vport, ndlp);
7026         len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
7027                         &rdp_context->link_stat);
7028         len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
7029                                      &rdp_context->link_stat, vport);
7030         len += lpfc_rdp_res_oed_temp_desc(phba,
7031                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7032                                 rdp_context->page_a2);
7033         len += lpfc_rdp_res_oed_voltage_desc(phba,
7034                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7035                                 rdp_context->page_a2);
7036         len += lpfc_rdp_res_oed_txbias_desc(phba,
7037                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7038                                 rdp_context->page_a2);
7039         len += lpfc_rdp_res_oed_txpower_desc(phba,
7040                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7041                                 rdp_context->page_a2);
7042         len += lpfc_rdp_res_oed_rxpower_desc(phba,
7043                                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7044                                 rdp_context->page_a2);
7045         len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
7046                                      rdp_context->page_a0, vport);
7047
7048         rdp_res->length = cpu_to_be32(len - 8);
7049         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7050
7051         /* Now that we know the true size of the payload, update the BPL */
7052         bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
7053         bpl->tus.f.bdeSize = len;
7054         bpl->tus.f.bdeFlags = 0;
7055         bpl->tus.w = le32_to_cpu(bpl->tus.w);
7056
7057         phba->fc_stat.elsXmitACC++;
7058         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7059         if (!elsiocb->ndlp) {
7060                 lpfc_els_free_iocb(phba, elsiocb);
7061                 goto free_rdp_context;
7062         }
7063
7064         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7065         if (rc == IOCB_ERROR) {
7066                 lpfc_els_free_iocb(phba, elsiocb);
7067                 lpfc_nlp_put(ndlp);
7068         }
7069
7070         goto free_rdp_context;
7071
7072 error:
7073         cmdsize = 2 * sizeof(uint32_t);
7074         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
7075                         ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
7076         if (!elsiocb)
7077                 goto free_rdp_context;
7078
7079         if (phba->sli_rev == LPFC_SLI_REV4) {
7080                 wqe = &elsiocb->wqe;
7081                 /* ox-id of the frame */
7082                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7083                        rdp_context->ox_id);
7084                 bf_set(wqe_ctxt_tag,
7085                        &wqe->xmit_els_rsp.wqe_com,
7086                        rdp_context->rx_id);
7087         } else {
7088                 icmd = &elsiocb->iocb;
7089                 icmd->ulpContext = rdp_context->rx_id;
7090                 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7091         }
7092
7093         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7094
7095         *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
7096         stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7097         stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7098
7099         phba->fc_stat.elsXmitLSRJT++;
7100         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7101         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7102         if (!elsiocb->ndlp) {
7103                 lpfc_els_free_iocb(phba, elsiocb);
7104                 goto free_rdp_context;
7105         }
7106
7107         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7108         if (rc == IOCB_ERROR) {
7109                 lpfc_els_free_iocb(phba, elsiocb);
7110                 lpfc_nlp_put(ndlp);
7111         }
7112
7113 free_rdp_context:
7114         /* This reference put is for the original unsolicited RDP. If the
7115          * prep failed, there is no reference to remove.
7116          */
7117         lpfc_nlp_put(ndlp);
7118         kfree(rdp_context);
7119 }
7120
7121 static int
7122 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
7123 {
7124         LPFC_MBOXQ_t *mbox = NULL;
7125         int rc;
7126
7127         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7128         if (!mbox) {
7129                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7130                                 "7105 failed to allocate mailbox memory");
7131                 return 1;
7132         }
7133
7134         if (lpfc_sli4_dump_page_a0(phba, mbox))
7135                 goto rdp_fail;
7136         mbox->vport = rdp_context->ndlp->vport;
7137         mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
7138         mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
7139         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7140         if (rc == MBX_NOT_FINISHED) {
7141                 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7142                 return 1;
7143         }
7144
7145         return 0;
7146
7147 rdp_fail:
7148         mempool_free(mbox, phba->mbox_mem_pool);
7149         return 1;
7150 }
7151
7152 /*
7153  * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
7154  * @vport: pointer to a host virtual N_Port data structure.
7155  * @cmdiocb: pointer to lpfc command iocb data structure.
7156  * @ndlp: pointer to a node-list data structure.
7157  *
7158  * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
7159  * IOCB. First, the payload of the unsolicited RDP is checked.
7160  * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
7161  * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
7162  * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
7163  * gather all data and send RDP response.
7164  *
7165  * Return code
7166  *   0 - Sent the acc response
7167  *   1 - Sent the reject response.
7168  */
7169 static int
7170 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7171                 struct lpfc_nodelist *ndlp)
7172 {
7173         struct lpfc_hba *phba = vport->phba;
7174         struct lpfc_dmabuf *pcmd;
7175         uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
7176         struct fc_rdp_req_frame *rdp_req;
7177         struct lpfc_rdp_context *rdp_context;
7178         union lpfc_wqe128 *cmd = NULL;
7179         struct ls_rjt stat;
7180
7181         if (phba->sli_rev < LPFC_SLI_REV4 ||
7182             bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7183                                                 LPFC_SLI_INTF_IF_TYPE_2) {
7184                 rjt_err = LSRJT_UNABLE_TPC;
7185                 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7186                 goto error;
7187         }
7188
7189         if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) {
7190                 rjt_err = LSRJT_UNABLE_TPC;
7191                 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7192                 goto error;
7193         }
7194
7195         pcmd = cmdiocb->cmd_dmabuf;
7196         rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
7197
7198         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7199                          "2422 ELS RDP Request "
7200                          "dec len %d tag x%x port_id %d len %d\n",
7201                          be32_to_cpu(rdp_req->rdp_des_length),
7202                          be32_to_cpu(rdp_req->nport_id_desc.tag),
7203                          be32_to_cpu(rdp_req->nport_id_desc.nport_id),
7204                          be32_to_cpu(rdp_req->nport_id_desc.length));
7205
7206         if (sizeof(struct fc_rdp_nport_desc) !=
7207                         be32_to_cpu(rdp_req->rdp_des_length))
7208                 goto rjt_logerr;
7209         if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
7210                 goto rjt_logerr;
7211         if (RDP_NPORT_ID_SIZE !=
7212                         be32_to_cpu(rdp_req->nport_id_desc.length))
7213                 goto rjt_logerr;
7214         rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
7215         if (!rdp_context) {
7216                 rjt_err = LSRJT_UNABLE_TPC;
7217                 goto error;
7218         }
7219
7220         cmd = &cmdiocb->wqe;
7221         rdp_context->ndlp = lpfc_nlp_get(ndlp);
7222         if (!rdp_context->ndlp) {
7223                 kfree(rdp_context);
7224                 rjt_err = LSRJT_UNABLE_TPC;
7225                 goto error;
7226         }
7227         rdp_context->ox_id = bf_get(wqe_rcvoxid,
7228                                     &cmd->xmit_els_rsp.wqe_com);
7229         rdp_context->rx_id = bf_get(wqe_ctxt_tag,
7230                                     &cmd->xmit_els_rsp.wqe_com);
7231         rdp_context->cmpl = lpfc_els_rdp_cmpl;
7232         if (lpfc_get_rdp_info(phba, rdp_context)) {
7233                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
7234                                  "2423 Unable to send mailbox");
7235                 kfree(rdp_context);
7236                 rjt_err = LSRJT_UNABLE_TPC;
7237                 lpfc_nlp_put(ndlp);
7238                 goto error;
7239         }
7240
7241         return 0;
7242
7243 rjt_logerr:
7244         rjt_err = LSRJT_LOGICAL_ERR;
7245
7246 error:
7247         memset(&stat, 0, sizeof(stat));
7248         stat.un.b.lsRjtRsnCode = rjt_err;
7249         stat.un.b.lsRjtRsnCodeExp = rjt_expl;
7250         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7251         return 1;
7252 }
7253
7254
7255 static void
7256 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
7257 {
7258         MAILBOX_t *mb;
7259         IOCB_t *icmd;
7260         union lpfc_wqe128 *wqe;
7261         uint8_t *pcmd;
7262         struct lpfc_iocbq *elsiocb;
7263         struct lpfc_nodelist *ndlp;
7264         struct ls_rjt *stat;
7265         union lpfc_sli4_cfg_shdr *shdr;
7266         struct lpfc_lcb_context *lcb_context;
7267         struct fc_lcb_res_frame *lcb_res;
7268         uint32_t cmdsize, shdr_status, shdr_add_status;
7269         int rc;
7270
7271         mb = &pmb->u.mb;
7272         lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp;
7273         ndlp = lcb_context->ndlp;
7274         pmb->ctx_ndlp = NULL;
7275         pmb->ctx_buf = NULL;
7276
7277         shdr = (union lpfc_sli4_cfg_shdr *)
7278                         &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
7279         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7280         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
7281
7282         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
7283                                 "0194 SET_BEACON_CONFIG mailbox "
7284                                 "completed with status x%x add_status x%x,"
7285                                 " mbx status x%x\n",
7286                                 shdr_status, shdr_add_status, mb->mbxStatus);
7287
7288         if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
7289             (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
7290             (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
7291                 mempool_free(pmb, phba->mbox_mem_pool);
7292                 goto error;
7293         }
7294
7295         mempool_free(pmb, phba->mbox_mem_pool);
7296         cmdsize = sizeof(struct fc_lcb_res_frame);
7297         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7298                         lpfc_max_els_tries, ndlp,
7299                         ndlp->nlp_DID, ELS_CMD_ACC);
7300
7301         /* Decrement the ndlp reference count from previous mbox command */
7302         lpfc_nlp_put(ndlp);
7303
7304         if (!elsiocb)
7305                 goto free_lcb_context;
7306
7307         lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt;
7308
7309         memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
7310
7311         if (phba->sli_rev == LPFC_SLI_REV4) {
7312                 wqe = &elsiocb->wqe;
7313                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7314                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7315                        lcb_context->ox_id);
7316         } else {
7317                 icmd = &elsiocb->iocb;
7318                 icmd->ulpContext = lcb_context->rx_id;
7319                 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7320         }
7321
7322         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7323         *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
7324         lcb_res->lcb_sub_command = lcb_context->sub_command;
7325         lcb_res->lcb_type = lcb_context->type;
7326         lcb_res->capability = lcb_context->capability;
7327         lcb_res->lcb_frequency = lcb_context->frequency;
7328         lcb_res->lcb_duration = lcb_context->duration;
7329         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7330         phba->fc_stat.elsXmitACC++;
7331
7332         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7333         if (!elsiocb->ndlp) {
7334                 lpfc_els_free_iocb(phba, elsiocb);
7335                 goto out;
7336         }
7337
7338         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7339         if (rc == IOCB_ERROR) {
7340                 lpfc_els_free_iocb(phba, elsiocb);
7341                 lpfc_nlp_put(ndlp);
7342         }
7343  out:
7344         kfree(lcb_context);
7345         return;
7346
7347 error:
7348         cmdsize = sizeof(struct fc_lcb_res_frame);
7349         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7350                                      lpfc_max_els_tries, ndlp,
7351                                      ndlp->nlp_DID, ELS_CMD_LS_RJT);
7352         lpfc_nlp_put(ndlp);
7353         if (!elsiocb)
7354                 goto free_lcb_context;
7355
7356         if (phba->sli_rev == LPFC_SLI_REV4) {
7357                 wqe = &elsiocb->wqe;
7358                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7359                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7360                        lcb_context->ox_id);
7361         } else {
7362                 icmd = &elsiocb->iocb;
7363                 icmd->ulpContext = lcb_context->rx_id;
7364                 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7365         }
7366
7367         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7368
7369         *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
7370         stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7371         stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7372
7373         if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
7374                 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
7375
7376         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7377         phba->fc_stat.elsXmitLSRJT++;
7378         elsiocb->ndlp = lpfc_nlp_get(ndlp);
7379         if (!elsiocb->ndlp) {
7380                 lpfc_els_free_iocb(phba, elsiocb);
7381                 goto free_lcb_context;
7382         }
7383
7384         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7385         if (rc == IOCB_ERROR) {
7386                 lpfc_els_free_iocb(phba, elsiocb);
7387                 lpfc_nlp_put(ndlp);
7388         }
7389 free_lcb_context:
7390         kfree(lcb_context);
7391 }
7392
7393 static int
7394 lpfc_sli4_set_beacon(struct lpfc_vport *vport,
7395                      struct lpfc_lcb_context *lcb_context,
7396                      uint32_t beacon_state)
7397 {
7398         struct lpfc_hba *phba = vport->phba;
7399         union lpfc_sli4_cfg_shdr *cfg_shdr;
7400         LPFC_MBOXQ_t *mbox = NULL;
7401         uint32_t len;
7402         int rc;
7403
7404         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7405         if (!mbox)
7406                 return 1;
7407
7408         cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
7409         len = sizeof(struct lpfc_mbx_set_beacon_config) -
7410                 sizeof(struct lpfc_sli4_cfg_mhdr);
7411         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
7412                          LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
7413                          LPFC_SLI4_MBX_EMBED);
7414         mbox->ctx_ndlp = (void *)lcb_context;
7415         mbox->vport = phba->pport;
7416         mbox->mbox_cmpl = lpfc_els_lcb_rsp;
7417         bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
7418                phba->sli4_hba.physical_port);
7419         bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
7420                beacon_state);
7421         mbox->u.mqe.un.beacon_config.word5 = 0;         /* Reserved */
7422
7423         /*
7424          *      Check bv1s bit before issuing the mailbox
7425          *      if bv1s == 1, LCB V1 supported
7426          *      else, LCB V0 supported
7427          */
7428
7429         if (phba->sli4_hba.pc_sli4_params.bv1s) {
7430                 /* COMMON_SET_BEACON_CONFIG_V1 */
7431                 cfg_shdr->request.word9 = BEACON_VERSION_V1;
7432                 lcb_context->capability |= LCB_CAPABILITY_DURATION;
7433                 bf_set(lpfc_mbx_set_beacon_port_type,
7434                        &mbox->u.mqe.un.beacon_config, 0);
7435                 bf_set(lpfc_mbx_set_beacon_duration_v1,
7436                        &mbox->u.mqe.un.beacon_config,
7437                        be16_to_cpu(lcb_context->duration));
7438         } else {
7439                 /* COMMON_SET_BEACON_CONFIG_V0 */
7440                 if (be16_to_cpu(lcb_context->duration) != 0) {
7441                         mempool_free(mbox, phba->mbox_mem_pool);
7442                         return 1;
7443                 }
7444                 cfg_shdr->request.word9 = BEACON_VERSION_V0;
7445                 lcb_context->capability &=  ~(LCB_CAPABILITY_DURATION);
7446                 bf_set(lpfc_mbx_set_beacon_state,
7447                        &mbox->u.mqe.un.beacon_config, beacon_state);
7448                 bf_set(lpfc_mbx_set_beacon_port_type,
7449                        &mbox->u.mqe.un.beacon_config, 1);
7450                 bf_set(lpfc_mbx_set_beacon_duration,
7451                        &mbox->u.mqe.un.beacon_config,
7452                        be16_to_cpu(lcb_context->duration));
7453         }
7454
7455         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7456         if (rc == MBX_NOT_FINISHED) {
7457                 mempool_free(mbox, phba->mbox_mem_pool);
7458                 return 1;
7459         }
7460
7461         return 0;
7462 }
7463
7464
7465 /**
7466  * lpfc_els_rcv_lcb - Process an unsolicited LCB
7467  * @vport: pointer to a host virtual N_Port data structure.
7468  * @cmdiocb: pointer to lpfc command iocb data structure.
7469  * @ndlp: pointer to a node-list data structure.
7470  *
7471  * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
7472  * First, the payload of the unsolicited LCB is checked.
7473  * Then based on Subcommand beacon will either turn on or off.
7474  *
7475  * Return code
7476  * 0 - Sent the acc response
7477  * 1 - Sent the reject response.
7478  **/
7479 static int
7480 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7481                  struct lpfc_nodelist *ndlp)
7482 {
7483         struct lpfc_hba *phba = vport->phba;
7484         struct lpfc_dmabuf *pcmd;
7485         uint8_t *lp;
7486         struct fc_lcb_request_frame *beacon;
7487         struct lpfc_lcb_context *lcb_context;
7488         u8 state, rjt_err = 0;
7489         struct ls_rjt stat;
7490
7491         pcmd = cmdiocb->cmd_dmabuf;
7492         lp = (uint8_t *)pcmd->virt;
7493         beacon = (struct fc_lcb_request_frame *)pcmd->virt;
7494
7495         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7496                         "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
7497                         "type x%x frequency %x duration x%x\n",
7498                         lp[0], lp[1], lp[2],
7499                         beacon->lcb_command,
7500                         beacon->lcb_sub_command,
7501                         beacon->lcb_type,
7502                         beacon->lcb_frequency,
7503                         be16_to_cpu(beacon->lcb_duration));
7504
7505         if (beacon->lcb_sub_command != LPFC_LCB_ON &&
7506             beacon->lcb_sub_command != LPFC_LCB_OFF) {
7507                 rjt_err = LSRJT_CMD_UNSUPPORTED;
7508                 goto rjt;
7509         }
7510
7511         if (phba->sli_rev < LPFC_SLI_REV4  ||
7512             phba->hba_flag & HBA_FCOE_MODE ||
7513             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7514             LPFC_SLI_INTF_IF_TYPE_2)) {
7515                 rjt_err = LSRJT_CMD_UNSUPPORTED;
7516                 goto rjt;
7517         }
7518
7519         lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
7520         if (!lcb_context) {
7521                 rjt_err = LSRJT_UNABLE_TPC;
7522                 goto rjt;
7523         }
7524
7525         state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
7526         lcb_context->sub_command = beacon->lcb_sub_command;
7527         lcb_context->capability = 0;
7528         lcb_context->type = beacon->lcb_type;
7529         lcb_context->frequency = beacon->lcb_frequency;
7530         lcb_context->duration = beacon->lcb_duration;
7531         lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb);
7532         lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb);
7533         lcb_context->ndlp = lpfc_nlp_get(ndlp);
7534         if (!lcb_context->ndlp) {
7535                 rjt_err = LSRJT_UNABLE_TPC;
7536                 goto rjt_free;
7537         }
7538
7539         if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
7540                 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
7541                                  "0193 failed to send mail box");
7542                 lpfc_nlp_put(ndlp);
7543                 rjt_err = LSRJT_UNABLE_TPC;
7544                 goto rjt_free;
7545         }
7546         return 0;
7547
7548 rjt_free:
7549         kfree(lcb_context);
7550 rjt:
7551         memset(&stat, 0, sizeof(stat));
7552         stat.un.b.lsRjtRsnCode = rjt_err;
7553         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7554         return 1;
7555 }
7556
7557
7558 /**
7559  * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
7560  * @vport: pointer to a host virtual N_Port data structure.
7561  *
7562  * This routine cleans up any Registration State Change Notification
7563  * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
7564  * @vport together with the host_lock is used to prevent multiple thread
7565  * trying to access the RSCN array on a same @vport at the same time.
7566  **/
7567 void
7568 lpfc_els_flush_rscn(struct lpfc_vport *vport)
7569 {
7570         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7571         struct lpfc_hba  *phba = vport->phba;
7572         int i;
7573
7574         spin_lock_irq(shost->host_lock);
7575         if (vport->fc_rscn_flush) {
7576                 /* Another thread is walking fc_rscn_id_list on this vport */
7577                 spin_unlock_irq(shost->host_lock);
7578                 return;
7579         }
7580         /* Indicate we are walking lpfc_els_flush_rscn on this vport */
7581         vport->fc_rscn_flush = 1;
7582         spin_unlock_irq(shost->host_lock);
7583
7584         for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7585                 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
7586                 vport->fc_rscn_id_list[i] = NULL;
7587         }
7588         spin_lock_irq(shost->host_lock);
7589         vport->fc_rscn_id_cnt = 0;
7590         vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
7591         spin_unlock_irq(shost->host_lock);
7592         lpfc_can_disctmo(vport);
7593         /* Indicate we are done walking this fc_rscn_id_list */
7594         vport->fc_rscn_flush = 0;
7595 }
7596
7597 /**
7598  * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
7599  * @vport: pointer to a host virtual N_Port data structure.
7600  * @did: remote destination port identifier.
7601  *
7602  * This routine checks whether there is any pending Registration State
7603  * Configuration Notification (RSCN) to a @did on @vport.
7604  *
7605  * Return code
7606  *   None zero - The @did matched with a pending rscn
7607  *   0 - not able to match @did with a pending rscn
7608  **/
7609 int
7610 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
7611 {
7612         D_ID ns_did;
7613         D_ID rscn_did;
7614         uint32_t *lp;
7615         uint32_t payload_len, i;
7616         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7617
7618         ns_did.un.word = did;
7619
7620         /* Never match fabric nodes for RSCNs */
7621         if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
7622                 return 0;
7623
7624         /* If we are doing a FULL RSCN rediscovery, match everything */
7625         if (vport->fc_flag & FC_RSCN_DISCOVERY)
7626                 return did;
7627
7628         spin_lock_irq(shost->host_lock);
7629         if (vport->fc_rscn_flush) {
7630                 /* Another thread is walking fc_rscn_id_list on this vport */
7631                 spin_unlock_irq(shost->host_lock);
7632                 return 0;
7633         }
7634         /* Indicate we are walking fc_rscn_id_list on this vport */
7635         vport->fc_rscn_flush = 1;
7636         spin_unlock_irq(shost->host_lock);
7637         for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7638                 lp = vport->fc_rscn_id_list[i]->virt;
7639                 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7640                 payload_len -= sizeof(uint32_t);        /* take off word 0 */
7641                 while (payload_len) {
7642                         rscn_did.un.word = be32_to_cpu(*lp++);
7643                         payload_len -= sizeof(uint32_t);
7644                         switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
7645                         case RSCN_ADDRESS_FORMAT_PORT:
7646                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7647                                     && (ns_did.un.b.area == rscn_did.un.b.area)
7648                                     && (ns_did.un.b.id == rscn_did.un.b.id))
7649                                         goto return_did_out;
7650                                 break;
7651                         case RSCN_ADDRESS_FORMAT_AREA:
7652                                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7653                                     && (ns_did.un.b.area == rscn_did.un.b.area))
7654                                         goto return_did_out;
7655                                 break;
7656                         case RSCN_ADDRESS_FORMAT_DOMAIN:
7657                                 if (ns_did.un.b.domain == rscn_did.un.b.domain)
7658                                         goto return_did_out;
7659                                 break;
7660                         case RSCN_ADDRESS_FORMAT_FABRIC:
7661                                 goto return_did_out;
7662                         }
7663                 }
7664         }
7665         /* Indicate we are done with walking fc_rscn_id_list on this vport */
7666         vport->fc_rscn_flush = 0;
7667         return 0;
7668 return_did_out:
7669         /* Indicate we are done with walking fc_rscn_id_list on this vport */
7670         vport->fc_rscn_flush = 0;
7671         return did;
7672 }
7673
7674 /**
7675  * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
7676  * @vport: pointer to a host virtual N_Port data structure.
7677  *
7678  * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
7679  * state machine for a @vport's nodes that are with pending RSCN (Registration
7680  * State Change Notification).
7681  *
7682  * Return code
7683  *   0 - Successful (currently alway return 0)
7684  **/
7685 static int
7686 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
7687 {
7688         struct lpfc_nodelist *ndlp = NULL, *n;
7689
7690         /* Move all affected nodes by pending RSCNs to NPR state. */
7691         list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
7692                 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
7693                     !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
7694                         continue;
7695
7696                 /* NVME Target mode does not do RSCN Recovery. */
7697                 if (vport->phba->nvmet_support)
7698                         continue;
7699
7700                 /* If we are in the process of doing discovery on this
7701                  * NPort, let it continue on its own.
7702                  */
7703                 switch (ndlp->nlp_state) {
7704                 case  NLP_STE_PLOGI_ISSUE:
7705                 case  NLP_STE_ADISC_ISSUE:
7706                 case  NLP_STE_REG_LOGIN_ISSUE:
7707                 case  NLP_STE_PRLI_ISSUE:
7708                 case  NLP_STE_LOGO_ISSUE:
7709                         continue;
7710                 }
7711
7712                 lpfc_disc_state_machine(vport, ndlp, NULL,
7713                                         NLP_EVT_DEVICE_RECOVERY);
7714                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
7715         }
7716         return 0;
7717 }
7718
7719 /**
7720  * lpfc_send_rscn_event - Send an RSCN event to management application
7721  * @vport: pointer to a host virtual N_Port data structure.
7722  * @cmdiocb: pointer to lpfc command iocb data structure.
7723  *
7724  * lpfc_send_rscn_event sends an RSCN netlink event to management
7725  * applications.
7726  */
7727 static void
7728 lpfc_send_rscn_event(struct lpfc_vport *vport,
7729                 struct lpfc_iocbq *cmdiocb)
7730 {
7731         struct lpfc_dmabuf *pcmd;
7732         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7733         uint32_t *payload_ptr;
7734         uint32_t payload_len;
7735         struct lpfc_rscn_event_header *rscn_event_data;
7736
7737         pcmd = cmdiocb->cmd_dmabuf;
7738         payload_ptr = (uint32_t *) pcmd->virt;
7739         payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
7740
7741         rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
7742                 payload_len, GFP_KERNEL);
7743         if (!rscn_event_data) {
7744                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
7745                         "0147 Failed to allocate memory for RSCN event\n");
7746                 return;
7747         }
7748         rscn_event_data->event_type = FC_REG_RSCN_EVENT;
7749         rscn_event_data->payload_length = payload_len;
7750         memcpy(rscn_event_data->rscn_payload, payload_ptr,
7751                 payload_len);
7752
7753         fc_host_post_vendor_event(shost,
7754                 fc_get_event_number(),
7755                 sizeof(struct lpfc_rscn_event_header) + payload_len,
7756                 (char *)rscn_event_data,
7757                 LPFC_NL_VENDOR_ID);
7758
7759         kfree(rscn_event_data);
7760 }
7761
7762 /**
7763  * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
7764  * @vport: pointer to a host virtual N_Port data structure.
7765  * @cmdiocb: pointer to lpfc command iocb data structure.
7766  * @ndlp: pointer to a node-list data structure.
7767  *
7768  * This routine processes an unsolicited RSCN (Registration State Change
7769  * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
7770  * to invoke fc_host_post_event() routine to the FC transport layer. If the
7771  * discover state machine is about to begin discovery, it just accepts the
7772  * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
7773  * contains N_Port IDs for other vports on this HBA, it just accepts the
7774  * RSCN and ignore processing it. If the state machine is in the recovery
7775  * state, the fc_rscn_id_list of this @vport is walked and the
7776  * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
7777  * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
7778  * routine is invoked to handle the RSCN event.
7779  *
7780  * Return code
7781  *   0 - Just sent the acc response
7782  *   1 - Sent the acc response and waited for name server completion
7783  **/
7784 static int
7785 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7786                   struct lpfc_nodelist *ndlp)
7787 {
7788         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7789         struct lpfc_hba  *phba = vport->phba;
7790         struct lpfc_dmabuf *pcmd;
7791         uint32_t *lp, *datap;
7792         uint32_t payload_len, length, nportid, *cmd;
7793         int rscn_cnt;
7794         int rscn_id = 0, hba_id = 0;
7795         int i, tmo;
7796
7797         pcmd = cmdiocb->cmd_dmabuf;
7798         lp = (uint32_t *) pcmd->virt;
7799
7800         payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7801         payload_len -= sizeof(uint32_t);        /* take off word 0 */
7802         /* RSCN received */
7803         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
7804                          "0214 RSCN received Data: x%x x%x x%x x%x\n",
7805                          vport->fc_flag, payload_len, *lp,
7806                          vport->fc_rscn_id_cnt);
7807
7808         /* Send an RSCN event to the management application */
7809         lpfc_send_rscn_event(vport, cmdiocb);
7810
7811         for (i = 0; i < payload_len/sizeof(uint32_t); i++)
7812                 fc_host_post_event(shost, fc_get_event_number(),
7813                         FCH_EVT_RSCN, lp[i]);
7814
7815         /* Check if RSCN is coming from a direct-connected remote NPort */
7816         if (vport->fc_flag & FC_PT2PT) {
7817                 /* If so, just ACC it, no other action needed for now */
7818                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7819                                  "2024 pt2pt RSCN %08x Data: x%x x%x\n",
7820                                  *lp, vport->fc_flag, payload_len);
7821                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7822
7823                 /* Check to see if we need to NVME rescan this target
7824                  * remoteport.
7825                  */
7826                 if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
7827                     ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
7828                         lpfc_nvme_rescan_port(vport, ndlp);
7829                 return 0;
7830         }
7831
7832         /* If we are about to begin discovery, just ACC the RSCN.
7833          * Discovery processing will satisfy it.
7834          */
7835         if (vport->port_state <= LPFC_NS_QRY) {
7836                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
7837                         "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
7838                         ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
7839
7840                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7841                 return 0;
7842         }
7843
7844         /* If this RSCN just contains NPortIDs for other vports on this HBA,
7845          * just ACC and ignore it.
7846          */
7847         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
7848                 !(vport->cfg_peer_port_login)) {
7849                 i = payload_len;
7850                 datap = lp;
7851                 while (i > 0) {
7852                         nportid = *datap++;
7853                         nportid = ((be32_to_cpu(nportid)) & Mask_DID);
7854                         i -= sizeof(uint32_t);
7855                         rscn_id++;
7856                         if (lpfc_find_vport_by_did(phba, nportid))
7857                                 hba_id++;
7858                 }
7859                 if (rscn_id == hba_id) {
7860                         /* ALL NPortIDs in RSCN are on HBA */
7861                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
7862                                          "0219 Ignore RSCN "
7863                                          "Data: x%x x%x x%x x%x\n",
7864                                          vport->fc_flag, payload_len,
7865                                          *lp, vport->fc_rscn_id_cnt);
7866                         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
7867                                 "RCV RSCN vport:  did:x%x/ste:x%x flg:x%x",
7868                                 ndlp->nlp_DID, vport->port_state,
7869                                 ndlp->nlp_flag);
7870
7871                         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
7872                                 ndlp, NULL);
7873                         /* Restart disctmo if its already running */
7874                         if (vport->fc_flag & FC_DISC_TMO) {
7875                                 tmo = ((phba->fc_ratov * 3) + 3);
7876                                 mod_timer(&vport->fc_disctmo,
7877                                           jiffies +
7878                                           msecs_to_jiffies(1000 * tmo));
7879                         }
7880                         return 0;
7881                 }
7882         }
7883
7884         spin_lock_irq(shost->host_lock);
7885         if (vport->fc_rscn_flush) {
7886                 /* Another thread is walking fc_rscn_id_list on this vport */
7887                 vport->fc_flag |= FC_RSCN_DISCOVERY;
7888                 spin_unlock_irq(shost->host_lock);
7889                 /* Send back ACC */
7890                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7891                 return 0;
7892         }
7893         /* Indicate we are walking fc_rscn_id_list on this vport */
7894         vport->fc_rscn_flush = 1;
7895         spin_unlock_irq(shost->host_lock);
7896         /* Get the array count after successfully have the token */
7897         rscn_cnt = vport->fc_rscn_id_cnt;
7898         /* If we are already processing an RSCN, save the received
7899          * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
7900          */
7901         if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
7902                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
7903                         "RCV RSCN defer:  did:x%x/ste:x%x flg:x%x",
7904                         ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
7905
7906                 spin_lock_irq(shost->host_lock);
7907                 vport->fc_flag |= FC_RSCN_DEFERRED;
7908
7909                 /* Restart disctmo if its already running */
7910                 if (vport->fc_flag & FC_DISC_TMO) {
7911                         tmo = ((phba->fc_ratov * 3) + 3);
7912                         mod_timer(&vport->fc_disctmo,
7913                                   jiffies + msecs_to_jiffies(1000 * tmo));
7914                 }
7915                 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
7916                     !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
7917                         vport->fc_flag |= FC_RSCN_MODE;
7918                         vport->fc_flag &= ~FC_RSCN_MEMENTO;
7919                         spin_unlock_irq(shost->host_lock);
7920                         if (rscn_cnt) {
7921                                 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
7922                                 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
7923                         }
7924                         if ((rscn_cnt) &&
7925                             (payload_len + length <= LPFC_BPL_SIZE)) {
7926                                 *cmd &= ELS_CMD_MASK;
7927                                 *cmd |= cpu_to_be32(payload_len + length);
7928                                 memcpy(((uint8_t *)cmd) + length, lp,
7929                                        payload_len);
7930                         } else {
7931                                 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
7932                                 vport->fc_rscn_id_cnt++;
7933                                 /* If we zero, cmdiocb->cmd_dmabuf, the calling
7934                                  * routine will not try to free it.
7935                                  */
7936                                 cmdiocb->cmd_dmabuf = NULL;
7937                         }
7938                         /* Deferred RSCN */
7939                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
7940                                          "0235 Deferred RSCN "
7941                                          "Data: x%x x%x x%x\n",
7942                                          vport->fc_rscn_id_cnt, vport->fc_flag,
7943                                          vport->port_state);
7944                 } else {
7945                         vport->fc_flag |= FC_RSCN_DISCOVERY;
7946                         spin_unlock_irq(shost->host_lock);
7947                         /* ReDiscovery RSCN */
7948                         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
7949                                          "0234 ReDiscovery RSCN "
7950                                          "Data: x%x x%x x%x\n",
7951                                          vport->fc_rscn_id_cnt, vport->fc_flag,
7952                                          vport->port_state);
7953                 }
7954                 /* Indicate we are done walking fc_rscn_id_list on this vport */
7955                 vport->fc_rscn_flush = 0;
7956                 /* Send back ACC */
7957                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7958                 /* send RECOVERY event for ALL nodes that match RSCN payload */
7959                 lpfc_rscn_recovery_check(vport);
7960                 return 0;
7961         }
7962         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
7963                 "RCV RSCN:        did:x%x/ste:x%x flg:x%x",
7964                 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
7965
7966         spin_lock_irq(shost->host_lock);
7967         vport->fc_flag |= FC_RSCN_MODE;
7968         vport->fc_flag &= ~FC_RSCN_MEMENTO;
7969         spin_unlock_irq(shost->host_lock);
7970         vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
7971         /* Indicate we are done walking fc_rscn_id_list on this vport */
7972         vport->fc_rscn_flush = 0;
7973         /*
7974          * If we zero, cmdiocb->cmd_dmabuf, the calling routine will
7975          * not try to free it.
7976          */
7977         cmdiocb->cmd_dmabuf = NULL;
7978         lpfc_set_disctmo(vport);
7979         /* Send back ACC */
7980         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7981         /* send RECOVERY event for ALL nodes that match RSCN payload */
7982         lpfc_rscn_recovery_check(vport);
7983         return lpfc_els_handle_rscn(vport);
7984 }
7985
7986 /**
7987  * lpfc_els_handle_rscn - Handle rscn for a vport
7988  * @vport: pointer to a host virtual N_Port data structure.
7989  *
7990  * This routine handles the Registration State Configuration Notification
7991  * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
7992  * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
7993  * if the ndlp to NameServer exists, a Common Transport (CT) command to the
7994  * NameServer shall be issued. If CT command to the NameServer fails to be
7995  * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
7996  * RSCN activities with the @vport.
7997  *
7998  * Return code
7999  *   0 - Cleaned up rscn on the @vport
8000  *   1 - Wait for plogi to name server before proceed
8001  **/
8002 int
8003 lpfc_els_handle_rscn(struct lpfc_vport *vport)
8004 {
8005         struct lpfc_nodelist *ndlp;
8006         struct lpfc_hba  *phba = vport->phba;
8007
8008         /* Ignore RSCN if the port is being torn down. */
8009         if (vport->load_flag & FC_UNLOADING) {
8010                 lpfc_els_flush_rscn(vport);
8011                 return 0;
8012         }
8013
8014         /* Start timer for RSCN processing */
8015         lpfc_set_disctmo(vport);
8016
8017         /* RSCN processed */
8018         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8019                          "0215 RSCN processed Data: x%x x%x x%x x%x x%x x%x\n",
8020                          vport->fc_flag, 0, vport->fc_rscn_id_cnt,
8021                          vport->port_state, vport->num_disc_nodes,
8022                          vport->gidft_inp);
8023
8024         /* To process RSCN, first compare RSCN data with NameServer */
8025         vport->fc_ns_retry = 0;
8026         vport->num_disc_nodes = 0;
8027
8028         ndlp = lpfc_findnode_did(vport, NameServer_DID);
8029         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
8030                 /* Good ndlp, issue CT Request to NameServer.  Need to
8031                  * know how many gidfts were issued.  If none, then just
8032                  * flush the RSCN.  Otherwise, the outstanding requests
8033                  * need to complete.
8034                  */
8035                 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
8036                         if (lpfc_issue_gidft(vport) > 0)
8037                                 return 1;
8038                 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
8039                         if (lpfc_issue_gidpt(vport) > 0)
8040                                 return 1;
8041                 } else {
8042                         return 1;
8043                 }
8044         } else {
8045                 /* Nameserver login in question.  Revalidate. */
8046                 if (ndlp) {
8047                         ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
8048                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8049                 } else {
8050                         ndlp = lpfc_nlp_init(vport, NameServer_DID);
8051                         if (!ndlp) {
8052                                 lpfc_els_flush_rscn(vport);
8053                                 return 0;
8054                         }
8055                         ndlp->nlp_prev_state = ndlp->nlp_state;
8056                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8057                 }
8058                 ndlp->nlp_type |= NLP_FABRIC;
8059                 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
8060                 /* Wait for NameServer login cmpl before we can
8061                  * continue
8062                  */
8063                 return 1;
8064         }
8065
8066         lpfc_els_flush_rscn(vport);
8067         return 0;
8068 }
8069
8070 /**
8071  * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
8072  * @vport: pointer to a host virtual N_Port data structure.
8073  * @cmdiocb: pointer to lpfc command iocb data structure.
8074  * @ndlp: pointer to a node-list data structure.
8075  *
8076  * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
8077  * unsolicited event. An unsolicited FLOGI can be received in a point-to-
8078  * point topology. As an unsolicited FLOGI should not be received in a loop
8079  * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
8080  * lpfc_check_sparm() routine is invoked to check the parameters in the
8081  * unsolicited FLOGI. If parameters validation failed, the routine
8082  * lpfc_els_rsp_reject() shall be called with reject reason code set to
8083  * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
8084  * FLOGI shall be compared with the Port WWN of the @vport to determine who
8085  * will initiate PLOGI. The higher lexicographical value party shall has
8086  * higher priority (as the winning port) and will initiate PLOGI and
8087  * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
8088  * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
8089  * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
8090  *
8091  * Return code
8092  *   0 - Successfully processed the unsolicited flogi
8093  *   1 - Failed to process the unsolicited flogi
8094  **/
8095 static int
8096 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8097                    struct lpfc_nodelist *ndlp)
8098 {
8099         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8100         struct lpfc_hba  *phba = vport->phba;
8101         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
8102         uint32_t *lp = (uint32_t *) pcmd->virt;
8103         union lpfc_wqe128 *wqe = &cmdiocb->wqe;
8104         struct serv_parm *sp;
8105         LPFC_MBOXQ_t *mbox;
8106         uint32_t cmd, did;
8107         int rc;
8108         uint32_t fc_flag = 0;
8109         uint32_t port_state = 0;
8110
8111         /* Clear external loopback plug detected flag */
8112         phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
8113
8114         cmd = *lp++;
8115         sp = (struct serv_parm *) lp;
8116
8117         /* FLOGI received */
8118
8119         lpfc_set_disctmo(vport);
8120
8121         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
8122                 /* We should never receive a FLOGI in loop mode, ignore it */
8123                 did =  bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
8124
8125                 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
8126                    Loop Mode */
8127                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8128                                  "0113 An FLOGI ELS command x%x was "
8129                                  "received from DID x%x in Loop Mode\n",
8130                                  cmd, did);
8131                 return 1;
8132         }
8133
8134         (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
8135
8136         /*
8137          * If our portname is greater than the remote portname,
8138          * then we initiate Nport login.
8139          */
8140
8141         rc = memcmp(&vport->fc_portname, &sp->portName,
8142                     sizeof(struct lpfc_name));
8143
8144         if (!rc) {
8145                 if (phba->sli_rev < LPFC_SLI_REV4) {
8146                         mbox = mempool_alloc(phba->mbox_mem_pool,
8147                                              GFP_KERNEL);
8148                         if (!mbox)
8149                                 return 1;
8150                         lpfc_linkdown(phba);
8151                         lpfc_init_link(phba, mbox,
8152                                        phba->cfg_topology,
8153                                        phba->cfg_link_speed);
8154                         mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
8155                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
8156                         mbox->vport = vport;
8157                         rc = lpfc_sli_issue_mbox(phba, mbox,
8158                                                  MBX_NOWAIT);
8159                         lpfc_set_loopback_flag(phba);
8160                         if (rc == MBX_NOT_FINISHED)
8161                                 mempool_free(mbox, phba->mbox_mem_pool);
8162                         return 1;
8163                 }
8164
8165                 /* External loopback plug insertion detected */
8166                 phba->link_flag |= LS_EXTERNAL_LOOPBACK;
8167
8168                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC,
8169                                  "1119 External Loopback plug detected\n");
8170
8171                 /* abort the flogi coming back to ourselves
8172                  * due to external loopback on the port.
8173                  */
8174                 lpfc_els_abort_flogi(phba);
8175                 return 0;
8176
8177         } else if (rc > 0) {    /* greater than */
8178                 spin_lock_irq(shost->host_lock);
8179                 vport->fc_flag |= FC_PT2PT_PLOGI;
8180                 spin_unlock_irq(shost->host_lock);
8181
8182                 /* If we have the high WWPN we can assign our own
8183                  * myDID; otherwise, we have to WAIT for a PLOGI
8184                  * from the remote NPort to find out what it
8185                  * will be.
8186                  */
8187                 vport->fc_myDID = PT2PT_LocalID;
8188         } else {
8189                 vport->fc_myDID = PT2PT_RemoteID;
8190         }
8191
8192         /*
8193          * The vport state should go to LPFC_FLOGI only
8194          * AFTER we issue a FLOGI, not receive one.
8195          */
8196         spin_lock_irq(shost->host_lock);
8197         fc_flag = vport->fc_flag;
8198         port_state = vport->port_state;
8199         vport->fc_flag |= FC_PT2PT;
8200         vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
8201
8202         /* Acking an unsol FLOGI.  Count 1 for link bounce
8203          * work-around.
8204          */
8205         vport->rcv_flogi_cnt++;
8206         spin_unlock_irq(shost->host_lock);
8207         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8208                          "3311 Rcv Flogi PS x%x new PS x%x "
8209                          "fc_flag x%x new fc_flag x%x\n",
8210                          port_state, vport->port_state,
8211                          fc_flag, vport->fc_flag);
8212
8213         /*
8214          * We temporarily set fc_myDID to make it look like we are
8215          * a Fabric. This is done just so we end up with the right
8216          * did / sid on the FLOGI ACC rsp.
8217          */
8218         did = vport->fc_myDID;
8219         vport->fc_myDID = Fabric_DID;
8220
8221         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
8222
8223         /* Defer ACC response until AFTER we issue a FLOGI */
8224         if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) {
8225                 phba->defer_flogi_acc_rx_id = bf_get(wqe_ctxt_tag,
8226                                                      &wqe->xmit_els_rsp.wqe_com);
8227                 phba->defer_flogi_acc_ox_id = bf_get(wqe_rcvoxid,
8228                                                      &wqe->xmit_els_rsp.wqe_com);
8229
8230                 vport->fc_myDID = did;
8231
8232                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8233                                  "3344 Deferring FLOGI ACC: rx_id: x%x,"
8234                                  " ox_id: x%x, hba_flag x%x\n",
8235                                  phba->defer_flogi_acc_rx_id,
8236                                  phba->defer_flogi_acc_ox_id, phba->hba_flag);
8237
8238                 phba->defer_flogi_acc_flag = true;
8239
8240                 return 0;
8241         }
8242
8243         /* Send back ACC */
8244         lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
8245
8246         /* Now lets put fc_myDID back to what its supposed to be */
8247         vport->fc_myDID = did;
8248
8249         return 0;
8250 }
8251
8252 /**
8253  * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
8254  * @vport: pointer to a host virtual N_Port data structure.
8255  * @cmdiocb: pointer to lpfc command iocb data structure.
8256  * @ndlp: pointer to a node-list data structure.
8257  *
8258  * This routine processes Request Node Identification Data (RNID) IOCB
8259  * received as an ELS unsolicited event. Only when the RNID specified format
8260  * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
8261  * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
8262  * Accept (ACC) the RNID ELS command. All the other RNID formats are
8263  * rejected by invoking the lpfc_els_rsp_reject() routine.
8264  *
8265  * Return code
8266  *   0 - Successfully processed rnid iocb (currently always return 0)
8267  **/
8268 static int
8269 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8270                   struct lpfc_nodelist *ndlp)
8271 {
8272         struct lpfc_dmabuf *pcmd;
8273         uint32_t *lp;
8274         RNID *rn;
8275         struct ls_rjt stat;
8276
8277         pcmd = cmdiocb->cmd_dmabuf;
8278         lp = (uint32_t *) pcmd->virt;
8279
8280         lp++;
8281         rn = (RNID *) lp;
8282
8283         /* RNID received */
8284
8285         switch (rn->Format) {
8286         case 0:
8287         case RNID_TOPOLOGY_DISC:
8288                 /* Send back ACC */
8289                 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
8290                 break;
8291         default:
8292                 /* Reject this request because format not supported */
8293                 stat.un.b.lsRjtRsvd0 = 0;
8294                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8295                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8296                 stat.un.b.vendorUnique = 0;
8297                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
8298                         NULL);
8299         }
8300         return 0;
8301 }
8302
8303 /**
8304  * lpfc_els_rcv_echo - Process an unsolicited echo iocb
8305  * @vport: pointer to a host virtual N_Port data structure.
8306  * @cmdiocb: pointer to lpfc command iocb data structure.
8307  * @ndlp: pointer to a node-list data structure.
8308  *
8309  * Return code
8310  *   0 - Successfully processed echo iocb (currently always return 0)
8311  **/
8312 static int
8313 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8314                   struct lpfc_nodelist *ndlp)
8315 {
8316         uint8_t *pcmd;
8317
8318         pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt;
8319
8320         /* skip over first word of echo command to find echo data */
8321         pcmd += sizeof(uint32_t);
8322
8323         lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
8324         return 0;
8325 }
8326
8327 /**
8328  * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
8329  * @vport: pointer to a host virtual N_Port data structure.
8330  * @cmdiocb: pointer to lpfc command iocb data structure.
8331  * @ndlp: pointer to a node-list data structure.
8332  *
8333  * This routine processes a Link Incident Report Registration(LIRR) IOCB
8334  * received as an ELS unsolicited event. Currently, this function just invokes
8335  * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
8336  *
8337  * Return code
8338  *   0 - Successfully processed lirr iocb (currently always return 0)
8339  **/
8340 static int
8341 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8342                   struct lpfc_nodelist *ndlp)
8343 {
8344         struct ls_rjt stat;
8345
8346         /* For now, unconditionally reject this command */
8347         stat.un.b.lsRjtRsvd0 = 0;
8348         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8349         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8350         stat.un.b.vendorUnique = 0;
8351         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8352         return 0;
8353 }
8354
8355 /**
8356  * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
8357  * @vport: pointer to a host virtual N_Port data structure.
8358  * @cmdiocb: pointer to lpfc command iocb data structure.
8359  * @ndlp: pointer to a node-list data structure.
8360  *
8361  * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
8362  * received as an ELS unsolicited event. A request to RRQ shall only
8363  * be accepted if the Originator Nx_Port N_Port_ID or the Responder
8364  * Nx_Port N_Port_ID of the target Exchange is the same as the
8365  * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
8366  * not accepted, an LS_RJT with reason code "Unable to perform
8367  * command request" and reason code explanation "Invalid Originator
8368  * S_ID" shall be returned. For now, we just unconditionally accept
8369  * RRQ from the target.
8370  **/
8371 static void
8372 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8373                  struct lpfc_nodelist *ndlp)
8374 {
8375         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8376         if (vport->phba->sli_rev == LPFC_SLI_REV4)
8377                 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
8378 }
8379
8380 /**
8381  * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
8382  * @phba: pointer to lpfc hba data structure.
8383  * @pmb: pointer to the driver internal queue element for mailbox command.
8384  *
8385  * This routine is the completion callback function for the MBX_READ_LNK_STAT
8386  * mailbox command. This callback function is to actually send the Accept
8387  * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
8388  * collects the link statistics from the completion of the MBX_READ_LNK_STAT
8389  * mailbox command, constructs the RLS response with the link statistics
8390  * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
8391  * response to the RLS.
8392  *
8393  * Note that the ndlp reference count will be incremented by 1 for holding the
8394  * ndlp and the reference to ndlp will be stored into the ndlp field of
8395  * the IOCB for the completion callback function to the RLS Accept Response
8396  * ELS IOCB command.
8397  *
8398  **/
8399 static void
8400 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
8401 {
8402         int rc = 0;
8403         MAILBOX_t *mb;
8404         IOCB_t *icmd;
8405         union lpfc_wqe128 *wqe;
8406         struct RLS_RSP *rls_rsp;
8407         uint8_t *pcmd;
8408         struct lpfc_iocbq *elsiocb;
8409         struct lpfc_nodelist *ndlp;
8410         uint16_t oxid;
8411         uint16_t rxid;
8412         uint32_t cmdsize;
8413         u32 ulp_context;
8414
8415         mb = &pmb->u.mb;
8416
8417         ndlp = pmb->ctx_ndlp;
8418         rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff);
8419         oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff);
8420         pmb->ctx_buf = NULL;
8421         pmb->ctx_ndlp = NULL;
8422
8423         if (mb->mbxStatus) {
8424                 mempool_free(pmb, phba->mbox_mem_pool);
8425                 return;
8426         }
8427
8428         cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
8429         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8430                                      lpfc_max_els_tries, ndlp,
8431                                      ndlp->nlp_DID, ELS_CMD_ACC);
8432
8433         /* Decrement the ndlp reference count from previous mbox command */
8434         lpfc_nlp_put(ndlp);
8435
8436         if (!elsiocb) {
8437                 mempool_free(pmb, phba->mbox_mem_pool);
8438                 return;
8439         }
8440
8441         ulp_context = get_job_ulpcontext(phba, elsiocb);
8442         if (phba->sli_rev == LPFC_SLI_REV4) {
8443                 wqe = &elsiocb->wqe;
8444                 /* Xri / rx_id */
8445                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid);
8446                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid);
8447         } else {
8448                 icmd = &elsiocb->iocb;
8449                 icmd->ulpContext = rxid;
8450                 icmd->unsli3.rcvsli3.ox_id = oxid;
8451         }
8452
8453         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8454         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8455         pcmd += sizeof(uint32_t); /* Skip past command */
8456         rls_rsp = (struct RLS_RSP *)pcmd;
8457
8458         rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
8459         rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
8460         rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
8461         rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
8462         rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
8463         rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
8464         mempool_free(pmb, phba->mbox_mem_pool);
8465         /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8466         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8467                          "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
8468                          "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
8469                          elsiocb->iotag, ulp_context,
8470                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8471                          ndlp->nlp_rpi);
8472         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8473         phba->fc_stat.elsXmitACC++;
8474         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8475         if (!elsiocb->ndlp) {
8476                 lpfc_els_free_iocb(phba, elsiocb);
8477                 return;
8478         }
8479
8480         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8481         if (rc == IOCB_ERROR) {
8482                 lpfc_els_free_iocb(phba, elsiocb);
8483                 lpfc_nlp_put(ndlp);
8484         }
8485         return;
8486 }
8487
8488 /**
8489  * lpfc_els_rcv_rls - Process an unsolicited rls iocb
8490  * @vport: pointer to a host virtual N_Port data structure.
8491  * @cmdiocb: pointer to lpfc command iocb data structure.
8492  * @ndlp: pointer to a node-list data structure.
8493  *
8494  * This routine processes Read Link Status (RLS) IOCB received as an
8495  * ELS unsolicited event. It first checks the remote port state. If the
8496  * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8497  * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8498  * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
8499  * for reading the HBA link statistics. It is for the callback function,
8500  * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
8501  * to actually sending out RPL Accept (ACC) response.
8502  *
8503  * Return codes
8504  *   0 - Successfully processed rls iocb (currently always return 0)
8505  **/
8506 static int
8507 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8508                  struct lpfc_nodelist *ndlp)
8509 {
8510         struct lpfc_hba *phba = vport->phba;
8511         LPFC_MBOXQ_t *mbox;
8512         struct ls_rjt stat;
8513         u32 ctx = get_job_ulpcontext(phba, cmdiocb);
8514         u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
8515
8516         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8517             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8518                 /* reject the unsolicited RLS request and done with it */
8519                 goto reject_out;
8520
8521         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
8522         if (mbox) {
8523                 lpfc_read_lnk_stat(phba, mbox);
8524                 mbox->ctx_buf = (void *)((unsigned long)
8525                                          (ox_id << 16 | ctx));
8526                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
8527                 if (!mbox->ctx_ndlp)
8528                         goto node_err;
8529                 mbox->vport = vport;
8530                 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
8531                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
8532                         != MBX_NOT_FINISHED)
8533                         /* Mbox completion will send ELS Response */
8534                         return 0;
8535                 /* Decrement reference count used for the failed mbox
8536                  * command.
8537                  */
8538                 lpfc_nlp_put(ndlp);
8539 node_err:
8540                 mempool_free(mbox, phba->mbox_mem_pool);
8541         }
8542 reject_out:
8543         /* issue rejection response */
8544         stat.un.b.lsRjtRsvd0 = 0;
8545         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8546         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8547         stat.un.b.vendorUnique = 0;
8548         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8549         return 0;
8550 }
8551
8552 /**
8553  * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
8554  * @vport: pointer to a host virtual N_Port data structure.
8555  * @cmdiocb: pointer to lpfc command iocb data structure.
8556  * @ndlp: pointer to a node-list data structure.
8557  *
8558  * This routine processes Read Timout Value (RTV) IOCB received as an
8559  * ELS unsolicited event. It first checks the remote port state. If the
8560  * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8561  * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8562  * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
8563  * Value (RTV) unsolicited IOCB event.
8564  *
8565  * Note that the ndlp reference count will be incremented by 1 for holding the
8566  * ndlp and the reference to ndlp will be stored into the ndlp field of
8567  * the IOCB for the completion callback function to the RTV Accept Response
8568  * ELS IOCB command.
8569  *
8570  * Return codes
8571  *   0 - Successfully processed rtv iocb (currently always return 0)
8572  **/
8573 static int
8574 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8575                  struct lpfc_nodelist *ndlp)
8576 {
8577         int rc = 0;
8578         IOCB_t *icmd;
8579         union lpfc_wqe128 *wqe;
8580         struct lpfc_hba *phba = vport->phba;
8581         struct ls_rjt stat;
8582         struct RTV_RSP *rtv_rsp;
8583         uint8_t *pcmd;
8584         struct lpfc_iocbq *elsiocb;
8585         uint32_t cmdsize;
8586         u32 ulp_context;
8587
8588         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8589             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8590                 /* reject the unsolicited RTV request and done with it */
8591                 goto reject_out;
8592
8593         cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
8594         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8595                                      lpfc_max_els_tries, ndlp,
8596                                      ndlp->nlp_DID, ELS_CMD_ACC);
8597
8598         if (!elsiocb)
8599                 return 1;
8600
8601         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8602         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8603         pcmd += sizeof(uint32_t); /* Skip past command */
8604
8605         ulp_context = get_job_ulpcontext(phba, elsiocb);
8606         /* use the command's xri in the response */
8607         if (phba->sli_rev == LPFC_SLI_REV4) {
8608                 wqe = &elsiocb->wqe;
8609                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8610                        get_job_ulpcontext(phba, cmdiocb));
8611                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8612                        get_job_rcvoxid(phba, cmdiocb));
8613         } else {
8614                 icmd = &elsiocb->iocb;
8615                 icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb);
8616                 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb);
8617         }
8618
8619         rtv_rsp = (struct RTV_RSP *)pcmd;
8620
8621         /* populate RTV payload */
8622         rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
8623         rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
8624         bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
8625         bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
8626         rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
8627
8628         /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8629         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8630                          "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
8631                          "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
8632                          "Data: x%x x%x x%x\n",
8633                          elsiocb->iotag, ulp_context,
8634                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8635                          ndlp->nlp_rpi,
8636                         rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
8637         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8638         phba->fc_stat.elsXmitACC++;
8639         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8640         if (!elsiocb->ndlp) {
8641                 lpfc_els_free_iocb(phba, elsiocb);
8642                 return 0;
8643         }
8644
8645         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8646         if (rc == IOCB_ERROR) {
8647                 lpfc_els_free_iocb(phba, elsiocb);
8648                 lpfc_nlp_put(ndlp);
8649         }
8650         return 0;
8651
8652 reject_out:
8653         /* issue rejection response */
8654         stat.un.b.lsRjtRsvd0 = 0;
8655         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8656         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8657         stat.un.b.vendorUnique = 0;
8658         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8659         return 0;
8660 }
8661
8662 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
8663  * @vport: pointer to a host virtual N_Port data structure.
8664  * @ndlp: pointer to a node-list data structure.
8665  * @did: DID of the target.
8666  * @rrq: Pointer to the rrq struct.
8667  *
8668  * Build a ELS RRQ command and send it to the target. If the issue_iocb is
8669  * Successful the the completion handler will clear the RRQ.
8670  *
8671  * Return codes
8672  *   0 - Successfully sent rrq els iocb.
8673  *   1 - Failed to send rrq els iocb.
8674  **/
8675 static int
8676 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
8677                         uint32_t did, struct lpfc_node_rrq *rrq)
8678 {
8679         struct lpfc_hba  *phba = vport->phba;
8680         struct RRQ *els_rrq;
8681         struct lpfc_iocbq *elsiocb;
8682         uint8_t *pcmd;
8683         uint16_t cmdsize;
8684         int ret;
8685
8686         if (!ndlp)
8687                 return 1;
8688
8689         /* If ndlp is not NULL, we will bump the reference count on it */
8690         cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
8691         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
8692                                      ELS_CMD_RRQ);
8693         if (!elsiocb)
8694                 return 1;
8695
8696         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8697
8698         /* For RRQ request, remainder of payload is Exchange IDs */
8699         *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
8700         pcmd += sizeof(uint32_t);
8701         els_rrq = (struct RRQ *) pcmd;
8702
8703         bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
8704         bf_set(rrq_rxid, els_rrq, rrq->rxid);
8705         bf_set(rrq_did, els_rrq, vport->fc_myDID);
8706         els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
8707         els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
8708
8709
8710         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
8711                 "Issue RRQ:     did:x%x",
8712                 did, rrq->xritag, rrq->rxid);
8713         elsiocb->context_un.rrq = rrq;
8714         elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq;
8715
8716         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8717         if (!elsiocb->ndlp)
8718                 goto io_err;
8719
8720         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8721         if (ret == IOCB_ERROR) {
8722                 lpfc_nlp_put(ndlp);
8723                 goto io_err;
8724         }
8725         return 0;
8726
8727  io_err:
8728         lpfc_els_free_iocb(phba, elsiocb);
8729         return 1;
8730 }
8731
8732 /**
8733  * lpfc_send_rrq - Sends ELS RRQ if needed.
8734  * @phba: pointer to lpfc hba data structure.
8735  * @rrq: pointer to the active rrq.
8736  *
8737  * This routine will call the lpfc_issue_els_rrq if the rrq is
8738  * still active for the xri. If this function returns a failure then
8739  * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
8740  *
8741  * Returns 0 Success.
8742  *         1 Failure.
8743  **/
8744 int
8745 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
8746 {
8747         struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
8748                                                        rrq->nlp_DID);
8749         if (!ndlp)
8750                 return 1;
8751
8752         if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
8753                 return lpfc_issue_els_rrq(rrq->vport, ndlp,
8754                                          rrq->nlp_DID, rrq);
8755         else
8756                 return 1;
8757 }
8758
8759 /**
8760  * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
8761  * @vport: pointer to a host virtual N_Port data structure.
8762  * @cmdsize: size of the ELS command.
8763  * @oldiocb: pointer to the original lpfc command iocb data structure.
8764  * @ndlp: pointer to a node-list data structure.
8765  *
8766  * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
8767  * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
8768  *
8769  * Note that the ndlp reference count will be incremented by 1 for holding the
8770  * ndlp and the reference to ndlp will be stored into the ndlp field of
8771  * the IOCB for the completion callback function to the RPL Accept Response
8772  * ELS command.
8773  *
8774  * Return code
8775  *   0 - Successfully issued ACC RPL ELS command
8776  *   1 - Failed to issue ACC RPL ELS command
8777  **/
8778 static int
8779 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
8780                      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
8781 {
8782         int rc = 0;
8783         struct lpfc_hba *phba = vport->phba;
8784         IOCB_t *icmd;
8785         union lpfc_wqe128 *wqe;
8786         RPL_RSP rpl_rsp;
8787         struct lpfc_iocbq *elsiocb;
8788         uint8_t *pcmd;
8789         u32 ulp_context;
8790
8791         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
8792                                      ndlp->nlp_DID, ELS_CMD_ACC);
8793
8794         if (!elsiocb)
8795                 return 1;
8796
8797         ulp_context = get_job_ulpcontext(phba, elsiocb);
8798         if (phba->sli_rev == LPFC_SLI_REV4) {
8799                 wqe = &elsiocb->wqe;
8800                 /* Xri / rx_id */
8801                 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8802                        get_job_ulpcontext(phba, oldiocb));
8803                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8804                        get_job_rcvoxid(phba, oldiocb));
8805         } else {
8806                 icmd = &elsiocb->iocb;
8807                 icmd->ulpContext = get_job_ulpcontext(phba, oldiocb);
8808                 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb);
8809         }
8810
8811         pcmd = elsiocb->cmd_dmabuf->virt;
8812         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8813         pcmd += sizeof(uint16_t);
8814         *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
8815         pcmd += sizeof(uint16_t);
8816
8817         /* Setup the RPL ACC payload */
8818         rpl_rsp.listLen = be32_to_cpu(1);
8819         rpl_rsp.index = 0;
8820         rpl_rsp.port_num_blk.portNum = 0;
8821         rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
8822         memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
8823             sizeof(struct lpfc_name));
8824         memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
8825         /* Xmit ELS RPL ACC response tag <ulpIoTag> */
8826         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8827                          "0120 Xmit ELS RPL ACC response tag x%x "
8828                          "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
8829                          "rpi x%x\n",
8830                          elsiocb->iotag, ulp_context,
8831                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8832                          ndlp->nlp_rpi);
8833         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8834         phba->fc_stat.elsXmitACC++;
8835         elsiocb->ndlp = lpfc_nlp_get(ndlp);
8836         if (!elsiocb->ndlp) {
8837                 lpfc_els_free_iocb(phba, elsiocb);
8838                 return 1;
8839         }
8840
8841         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8842         if (rc == IOCB_ERROR) {
8843                 lpfc_els_free_iocb(phba, elsiocb);
8844                 lpfc_nlp_put(ndlp);
8845                 return 1;
8846         }
8847
8848         return 0;
8849 }
8850
8851 /**
8852  * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
8853  * @vport: pointer to a host virtual N_Port data structure.
8854  * @cmdiocb: pointer to lpfc command iocb data structure.
8855  * @ndlp: pointer to a node-list data structure.
8856  *
8857  * This routine processes Read Port List (RPL) IOCB received as an ELS
8858  * unsolicited event. It first checks the remote port state. If the remote
8859  * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
8860  * invokes the lpfc_els_rsp_reject() routine to send reject response.
8861  * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
8862  * to accept the RPL.
8863  *
8864  * Return code
8865  *   0 - Successfully processed rpl iocb (currently always return 0)
8866  **/
8867 static int
8868 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8869                  struct lpfc_nodelist *ndlp)
8870 {
8871         struct lpfc_dmabuf *pcmd;
8872         uint32_t *lp;
8873         uint32_t maxsize;
8874         uint16_t cmdsize;
8875         RPL *rpl;
8876         struct ls_rjt stat;
8877
8878         if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8879             (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
8880                 /* issue rejection response */
8881                 stat.un.b.lsRjtRsvd0 = 0;
8882                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8883                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8884                 stat.un.b.vendorUnique = 0;
8885                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
8886                         NULL);
8887                 /* rejected the unsolicited RPL request and done with it */
8888                 return 0;
8889         }
8890
8891         pcmd = cmdiocb->cmd_dmabuf;
8892         lp = (uint32_t *) pcmd->virt;
8893         rpl = (RPL *) (lp + 1);
8894         maxsize = be32_to_cpu(rpl->maxsize);
8895
8896         /* We support only one port */
8897         if ((rpl->index == 0) &&
8898             ((maxsize == 0) ||
8899              ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
8900                 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
8901         } else {
8902                 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
8903         }
8904         lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
8905
8906         return 0;
8907 }
8908
8909 /**
8910  * lpfc_els_rcv_farp - Process an unsolicited farp request els command
8911  * @vport: pointer to a virtual N_Port data structure.
8912  * @cmdiocb: pointer to lpfc command iocb data structure.
8913  * @ndlp: pointer to a node-list data structure.
8914  *
8915  * This routine processes Fibre Channel Address Resolution Protocol
8916  * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
8917  * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
8918  * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
8919  * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
8920  * remote PortName is compared against the FC PortName stored in the @vport
8921  * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
8922  * compared against the FC NodeName stored in the @vport data structure.
8923  * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
8924  * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
8925  * invoked to send out FARP Response to the remote node. Before sending the
8926  * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
8927  * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
8928  * routine is invoked to log into the remote port first.
8929  *
8930  * Return code
8931  *   0 - Either the FARP Match Mode not supported or successfully processed
8932  **/
8933 static int
8934 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8935                   struct lpfc_nodelist *ndlp)
8936 {
8937         struct lpfc_dmabuf *pcmd;
8938         uint32_t *lp;
8939         FARP *fp;
8940         uint32_t cnt, did;
8941
8942         did = get_job_els_rsp64_did(vport->phba, cmdiocb);
8943         pcmd = cmdiocb->cmd_dmabuf;
8944         lp = (uint32_t *) pcmd->virt;
8945
8946         lp++;
8947         fp = (FARP *) lp;
8948         /* FARP-REQ received from DID <did> */
8949         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8950                          "0601 FARP-REQ received from DID x%x\n", did);
8951         /* We will only support match on WWPN or WWNN */
8952         if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
8953                 return 0;
8954         }
8955
8956         cnt = 0;
8957         /* If this FARP command is searching for my portname */
8958         if (fp->Mflags & FARP_MATCH_PORT) {
8959                 if (memcmp(&fp->RportName, &vport->fc_portname,
8960                            sizeof(struct lpfc_name)) == 0)
8961                         cnt = 1;
8962         }
8963
8964         /* If this FARP command is searching for my nodename */
8965         if (fp->Mflags & FARP_MATCH_NODE) {
8966                 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
8967                            sizeof(struct lpfc_name)) == 0)
8968                         cnt = 1;
8969         }
8970
8971         if (cnt) {
8972                 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
8973                    (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
8974                         /* Log back into the node before sending the FARP. */
8975                         if (fp->Rflags & FARP_REQUEST_PLOGI) {
8976                                 ndlp->nlp_prev_state = ndlp->nlp_state;
8977                                 lpfc_nlp_set_state(vport, ndlp,
8978                                                    NLP_STE_PLOGI_ISSUE);
8979                                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
8980                         }
8981
8982                         /* Send a FARP response to that node */
8983                         if (fp->Rflags & FARP_REQUEST_FARPR)
8984                                 lpfc_issue_els_farpr(vport, did, 0);
8985                 }
8986         }
8987         return 0;
8988 }
8989
8990 /**
8991  * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
8992  * @vport: pointer to a host virtual N_Port data structure.
8993  * @cmdiocb: pointer to lpfc command iocb data structure.
8994  * @ndlp: pointer to a node-list data structure.
8995  *
8996  * This routine processes Fibre Channel Address Resolution Protocol
8997  * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
8998  * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
8999  * the FARP response request.
9000  *
9001  * Return code
9002  *   0 - Successfully processed FARPR IOCB (currently always return 0)
9003  **/
9004 static int
9005 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9006                    struct lpfc_nodelist  *ndlp)
9007 {
9008         struct lpfc_dmabuf *pcmd;
9009         uint32_t *lp;
9010         uint32_t did;
9011
9012         did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9013         pcmd = cmdiocb->cmd_dmabuf;
9014         lp = (uint32_t *)pcmd->virt;
9015
9016         lp++;
9017         /* FARP-RSP received from DID <did> */
9018         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9019                          "0600 FARP-RSP received from DID x%x\n", did);
9020         /* ACCEPT the Farp resp request */
9021         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
9022
9023         return 0;
9024 }
9025
9026 /**
9027  * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
9028  * @vport: pointer to a host virtual N_Port data structure.
9029  * @cmdiocb: pointer to lpfc command iocb data structure.
9030  * @fan_ndlp: pointer to a node-list data structure.
9031  *
9032  * This routine processes a Fabric Address Notification (FAN) IOCB
9033  * command received as an ELS unsolicited event. The FAN ELS command will
9034  * only be processed on a physical port (i.e., the @vport represents the
9035  * physical port). The fabric NodeName and PortName from the FAN IOCB are
9036  * compared against those in the phba data structure. If any of those is
9037  * different, the lpfc_initial_flogi() routine is invoked to initialize
9038  * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
9039  * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
9040  * is invoked to register login to the fabric.
9041  *
9042  * Return code
9043  *   0 - Successfully processed fan iocb (currently always return 0).
9044  **/
9045 static int
9046 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9047                  struct lpfc_nodelist *fan_ndlp)
9048 {
9049         struct lpfc_hba *phba = vport->phba;
9050         uint32_t *lp;
9051         FAN *fp;
9052
9053         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
9054         lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
9055         fp = (FAN *) ++lp;
9056         /* FAN received; Fan does not have a reply sequence */
9057         if ((vport == phba->pport) &&
9058             (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
9059                 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
9060                             sizeof(struct lpfc_name))) ||
9061                     (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
9062                             sizeof(struct lpfc_name)))) {
9063                         /* This port has switched fabrics. FLOGI is required */
9064                         lpfc_issue_init_vfi(vport);
9065                 } else {
9066                         /* FAN verified - skip FLOGI */
9067                         vport->fc_myDID = vport->fc_prevDID;
9068                         if (phba->sli_rev < LPFC_SLI_REV4)
9069                                 lpfc_issue_fabric_reglogin(vport);
9070                         else {
9071                                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9072                                         "3138 Need register VFI: (x%x/%x)\n",
9073                                         vport->fc_prevDID, vport->fc_myDID);
9074                                 lpfc_issue_reg_vfi(vport);
9075                         }
9076                 }
9077         }
9078         return 0;
9079 }
9080
9081 /**
9082  * lpfc_els_rcv_edc - Process an unsolicited EDC iocb
9083  * @vport: pointer to a host virtual N_Port data structure.
9084  * @cmdiocb: pointer to lpfc command iocb data structure.
9085  * @ndlp: pointer to a node-list data structure.
9086  *
9087  * Return code
9088  *   0 - Successfully processed echo iocb (currently always return 0)
9089  **/
9090 static int
9091 lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9092                  struct lpfc_nodelist *ndlp)
9093 {
9094         struct lpfc_hba  *phba = vport->phba;
9095         struct fc_els_edc *edc_req;
9096         struct fc_tlv_desc *tlv;
9097         uint8_t *payload;
9098         uint32_t *ptr, dtag;
9099         const char *dtag_nm;
9100         int desc_cnt = 0, bytes_remain;
9101         bool rcv_cap_desc = false;
9102
9103         payload = cmdiocb->cmd_dmabuf->virt;
9104
9105         edc_req = (struct fc_els_edc *)payload;
9106         bytes_remain = be32_to_cpu(edc_req->desc_len);
9107
9108         ptr = (uint32_t *)payload;
9109         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
9110                          "3319 Rcv EDC payload len %d: x%x x%x x%x\n",
9111                          bytes_remain, be32_to_cpu(*ptr),
9112                          be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2)));
9113
9114         /* No signal support unless there is a congestion descriptor */
9115         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
9116         phba->cgn_sig_freq = 0;
9117         phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
9118
9119         if (bytes_remain <= 0)
9120                 goto out;
9121
9122         tlv = edc_req->desc;
9123
9124         /*
9125          * cycle through EDC diagnostic descriptors to find the
9126          * congestion signaling capability descriptor
9127          */
9128         while (bytes_remain && !rcv_cap_desc) {
9129                 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
9130                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
9131                                         "6464 Truncated TLV hdr on "
9132                                         "Diagnostic descriptor[%d]\n",
9133                                         desc_cnt);
9134                         goto out;
9135                 }
9136
9137                 dtag = be32_to_cpu(tlv->desc_tag);
9138                 switch (dtag) {
9139                 case ELS_DTAG_LNK_FAULT_CAP:
9140                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9141                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9142                                 sizeof(struct fc_diag_lnkflt_desc)) {
9143                                 lpfc_printf_log(
9144                                         phba, KERN_WARNING, LOG_CGN_MGMT,
9145                                         "6465 Truncated Link Fault Diagnostic "
9146                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9147                                         desc_cnt, bytes_remain,
9148                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9149                                         sizeof(struct fc_diag_cg_sig_desc));
9150                                 goto out;
9151                         }
9152                         /* No action for Link Fault descriptor for now */
9153                         break;
9154                 case ELS_DTAG_CG_SIGNAL_CAP:
9155                         if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9156                             FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9157                                 sizeof(struct fc_diag_cg_sig_desc)) {
9158                                 lpfc_printf_log(
9159                                         phba, KERN_WARNING, LOG_CGN_MGMT,
9160                                         "6466 Truncated cgn signal Diagnostic "
9161                                         "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9162                                         desc_cnt, bytes_remain,
9163                                         FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9164                                         sizeof(struct fc_diag_cg_sig_desc));
9165                                 goto out;
9166                         }
9167
9168                         phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
9169                         phba->cgn_reg_signal = phba->cgn_init_reg_signal;
9170
9171                         /* We start negotiation with lpfc_fabric_cgn_frequency.
9172                          * When we process the EDC, we will settle on the
9173                          * higher frequency.
9174                          */
9175                         phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
9176
9177                         lpfc_least_capable_settings(
9178                                 phba, (struct fc_diag_cg_sig_desc *)tlv);
9179                         rcv_cap_desc = true;
9180                         break;
9181                 default:
9182                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
9183                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
9184                                         "6467 unknown Diagnostic "
9185                                         "Descriptor[%d]: tag x%x (%s)\n",
9186                                         desc_cnt, dtag, dtag_nm);
9187                 }
9188                 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
9189                 tlv = fc_tlv_next_desc(tlv);
9190                 desc_cnt++;
9191         }
9192 out:
9193         /* Need to send back an ACC */
9194         lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
9195
9196         lpfc_config_cgn_signal(phba);
9197         return 0;
9198 }
9199
9200 /**
9201  * lpfc_els_timeout - Handler funciton to the els timer
9202  * @t: timer context used to obtain the vport.
9203  *
9204  * This routine is invoked by the ELS timer after timeout. It posts the ELS
9205  * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
9206  * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
9207  * up the worker thread. It is for the worker thread to invoke the routine
9208  * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
9209  **/
9210 void
9211 lpfc_els_timeout(struct timer_list *t)
9212 {
9213         struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc);
9214         struct lpfc_hba   *phba = vport->phba;
9215         uint32_t tmo_posted;
9216         unsigned long iflag;
9217
9218         spin_lock_irqsave(&vport->work_port_lock, iflag);
9219         tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
9220         if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
9221                 vport->work_port_events |= WORKER_ELS_TMO;
9222         spin_unlock_irqrestore(&vport->work_port_lock, iflag);
9223
9224         if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
9225                 lpfc_worker_wake_up(phba);
9226         return;
9227 }
9228
9229
9230 /**
9231  * lpfc_els_timeout_handler - Process an els timeout event
9232  * @vport: pointer to a virtual N_Port data structure.
9233  *
9234  * This routine is the actual handler function that processes an ELS timeout
9235  * event. It walks the ELS ring to get and abort all the IOCBs (except the
9236  * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
9237  * invoking the lpfc_sli_issue_abort_iotag() routine.
9238  **/
9239 void
9240 lpfc_els_timeout_handler(struct lpfc_vport *vport)
9241 {
9242         struct lpfc_hba  *phba = vport->phba;
9243         struct lpfc_sli_ring *pring;
9244         struct lpfc_iocbq *tmp_iocb, *piocb;
9245         IOCB_t *cmd = NULL;
9246         struct lpfc_dmabuf *pcmd;
9247         uint32_t els_command = 0;
9248         uint32_t timeout;
9249         uint32_t remote_ID = 0xffffffff;
9250         LIST_HEAD(abort_list);
9251         u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
9252
9253
9254         timeout = (uint32_t)(phba->fc_ratov << 1);
9255
9256         pring = lpfc_phba_elsring(phba);
9257         if (unlikely(!pring))
9258                 return;
9259
9260         if (phba->pport->load_flag & FC_UNLOADING)
9261                 return;
9262
9263         spin_lock_irq(&phba->hbalock);
9264         if (phba->sli_rev == LPFC_SLI_REV4)
9265                 spin_lock(&pring->ring_lock);
9266
9267         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9268                 ulp_command = get_job_cmnd(phba, piocb);
9269                 ulp_context = get_job_ulpcontext(phba, piocb);
9270                 did = get_job_els_rsp64_did(phba, piocb);
9271
9272                 if (phba->sli_rev == LPFC_SLI_REV4) {
9273                         iotag = get_wqe_reqtag(piocb);
9274                 } else {
9275                         cmd = &piocb->iocb;
9276                         iotag = cmd->ulpIoTag;
9277                 }
9278
9279                 if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 ||
9280                     ulp_command == CMD_ABORT_XRI_CX ||
9281                     ulp_command == CMD_ABORT_XRI_CN ||
9282                     ulp_command == CMD_CLOSE_XRI_CN)
9283                         continue;
9284
9285                 if (piocb->vport != vport)
9286                         continue;
9287
9288                 pcmd = piocb->cmd_dmabuf;
9289                 if (pcmd)
9290                         els_command = *(uint32_t *) (pcmd->virt);
9291
9292                 if (els_command == ELS_CMD_FARP ||
9293                     els_command == ELS_CMD_FARPR ||
9294                     els_command == ELS_CMD_FDISC)
9295                         continue;
9296
9297                 if (piocb->drvrTimeout > 0) {
9298                         if (piocb->drvrTimeout >= timeout)
9299                                 piocb->drvrTimeout -= timeout;
9300                         else
9301                                 piocb->drvrTimeout = 0;
9302                         continue;
9303                 }
9304
9305                 remote_ID = 0xffffffff;
9306                 if (ulp_command != CMD_GEN_REQUEST64_CR) {
9307                         remote_ID = did;
9308                 } else {
9309                         struct lpfc_nodelist *ndlp;
9310                         ndlp = __lpfc_findnode_rpi(vport, ulp_context);
9311                         if (ndlp)
9312                                 remote_ID = ndlp->nlp_DID;
9313                 }
9314                 list_add_tail(&piocb->dlist, &abort_list);
9315         }
9316         if (phba->sli_rev == LPFC_SLI_REV4)
9317                 spin_unlock(&pring->ring_lock);
9318         spin_unlock_irq(&phba->hbalock);
9319
9320         list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9321                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9322                          "0127 ELS timeout Data: x%x x%x x%x "
9323                          "x%x\n", els_command,
9324                          remote_ID, ulp_command, iotag);
9325
9326                 spin_lock_irq(&phba->hbalock);
9327                 list_del_init(&piocb->dlist);
9328                 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9329                 spin_unlock_irq(&phba->hbalock);
9330         }
9331
9332         /* Make sure HBA is alive */
9333         lpfc_issue_hb_tmo(phba);
9334
9335         if (!list_empty(&pring->txcmplq))
9336                 if (!(phba->pport->load_flag & FC_UNLOADING))
9337                         mod_timer(&vport->els_tmofunc,
9338                                   jiffies + msecs_to_jiffies(1000 * timeout));
9339 }
9340
9341 /**
9342  * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
9343  * @vport: pointer to a host virtual N_Port data structure.
9344  *
9345  * This routine is used to clean up all the outstanding ELS commands on a
9346  * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
9347  * routine. After that, it walks the ELS transmit queue to remove all the
9348  * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
9349  * the IOCBs with a non-NULL completion callback function, the callback
9350  * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9351  * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
9352  * callback function, the IOCB will simply be released. Finally, it walks
9353  * the ELS transmit completion queue to issue an abort IOCB to any transmit
9354  * completion queue IOCB that is associated with the @vport and is not
9355  * an IOCB from libdfc (i.e., the management plane IOCBs that are not
9356  * part of the discovery state machine) out to HBA by invoking the
9357  * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
9358  * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
9359  * the IOCBs are aborted when this function returns.
9360  **/
9361 void
9362 lpfc_els_flush_cmd(struct lpfc_vport *vport)
9363 {
9364         LIST_HEAD(abort_list);
9365         struct lpfc_hba  *phba = vport->phba;
9366         struct lpfc_sli_ring *pring;
9367         struct lpfc_iocbq *tmp_iocb, *piocb;
9368         u32 ulp_command;
9369         unsigned long iflags = 0;
9370
9371         lpfc_fabric_abort_vport(vport);
9372
9373         /*
9374          * For SLI3, only the hbalock is required.  But SLI4 needs to coordinate
9375          * with the ring insert operation.  Because lpfc_sli_issue_abort_iotag
9376          * ultimately grabs the ring_lock, the driver must splice the list into
9377          * a working list and release the locks before calling the abort.
9378          */
9379         spin_lock_irqsave(&phba->hbalock, iflags);
9380         pring = lpfc_phba_elsring(phba);
9381
9382         /* Bail out if we've no ELS wq, like in PCI error recovery case. */
9383         if (unlikely(!pring)) {
9384                 spin_unlock_irqrestore(&phba->hbalock, iflags);
9385                 return;
9386         }
9387
9388         if (phba->sli_rev == LPFC_SLI_REV4)
9389                 spin_lock(&pring->ring_lock);
9390
9391         /* First we need to issue aborts to outstanding cmds on txcmpl */
9392         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9393                 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9394                         continue;
9395
9396                 if (piocb->vport != vport)
9397                         continue;
9398
9399                 if (piocb->cmd_flag & LPFC_DRIVER_ABORTED)
9400                         continue;
9401
9402                 /* On the ELS ring we can have ELS_REQUESTs or
9403                  * GEN_REQUESTs waiting for a response.
9404                  */
9405                 ulp_command = get_job_cmnd(phba, piocb);
9406                 if (ulp_command == CMD_ELS_REQUEST64_CR) {
9407                         list_add_tail(&piocb->dlist, &abort_list);
9408
9409                         /* If the link is down when flushing ELS commands
9410                          * the firmware will not complete them till after
9411                          * the link comes back up. This may confuse
9412                          * discovery for the new link up, so we need to
9413                          * change the compl routine to just clean up the iocb
9414                          * and avoid any retry logic.
9415                          */
9416                         if (phba->link_state == LPFC_LINK_DOWN)
9417                                 piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
9418                 }
9419                 if (ulp_command == CMD_GEN_REQUEST64_CR)
9420                         list_add_tail(&piocb->dlist, &abort_list);
9421         }
9422
9423         if (phba->sli_rev == LPFC_SLI_REV4)
9424                 spin_unlock(&pring->ring_lock);
9425         spin_unlock_irqrestore(&phba->hbalock, iflags);
9426
9427         /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
9428         list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9429                 spin_lock_irqsave(&phba->hbalock, iflags);
9430                 list_del_init(&piocb->dlist);
9431                 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9432                 spin_unlock_irqrestore(&phba->hbalock, iflags);
9433         }
9434         /* Make sure HBA is alive */
9435         lpfc_issue_hb_tmo(phba);
9436
9437         if (!list_empty(&abort_list))
9438                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9439                                  "3387 abort list for txq not empty\n");
9440         INIT_LIST_HEAD(&abort_list);
9441
9442         spin_lock_irqsave(&phba->hbalock, iflags);
9443         if (phba->sli_rev == LPFC_SLI_REV4)
9444                 spin_lock(&pring->ring_lock);
9445
9446         /* No need to abort the txq list,
9447          * just queue them up for lpfc_sli_cancel_iocbs
9448          */
9449         list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
9450                 ulp_command = get_job_cmnd(phba, piocb);
9451
9452                 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9453                         continue;
9454
9455                 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
9456                 if (ulp_command == CMD_QUE_RING_BUF_CN ||
9457                     ulp_command == CMD_QUE_RING_BUF64_CN ||
9458                     ulp_command == CMD_CLOSE_XRI_CN ||
9459                     ulp_command == CMD_ABORT_XRI_CN ||
9460                     ulp_command == CMD_ABORT_XRI_CX)
9461                         continue;
9462
9463                 if (piocb->vport != vport)
9464                         continue;
9465
9466                 list_del_init(&piocb->list);
9467                 list_add_tail(&piocb->list, &abort_list);
9468         }
9469
9470         /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
9471         if (vport == phba->pport) {
9472                 list_for_each_entry_safe(piocb, tmp_iocb,
9473                                          &phba->fabric_iocb_list, list) {
9474                         list_del_init(&piocb->list);
9475                         list_add_tail(&piocb->list, &abort_list);
9476                 }
9477         }
9478
9479         if (phba->sli_rev == LPFC_SLI_REV4)
9480                 spin_unlock(&pring->ring_lock);
9481         spin_unlock_irqrestore(&phba->hbalock, iflags);
9482
9483         /* Cancel all the IOCBs from the completions list */
9484         lpfc_sli_cancel_iocbs(phba, &abort_list,
9485                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
9486
9487         return;
9488 }
9489
9490 /**
9491  * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
9492  * @phba: pointer to lpfc hba data structure.
9493  *
9494  * This routine is used to clean up all the outstanding ELS commands on a
9495  * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
9496  * routine. After that, it walks the ELS transmit queue to remove all the
9497  * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
9498  * the IOCBs with the completion callback function associated, the callback
9499  * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9500  * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
9501  * callback function associated, the IOCB will simply be released. Finally,
9502  * it walks the ELS transmit completion queue to issue an abort IOCB to any
9503  * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
9504  * management plane IOCBs that are not part of the discovery state machine)
9505  * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
9506  **/
9507 void
9508 lpfc_els_flush_all_cmd(struct lpfc_hba  *phba)
9509 {
9510         struct lpfc_vport *vport;
9511
9512         spin_lock_irq(&phba->port_list_lock);
9513         list_for_each_entry(vport, &phba->port_list, listentry)
9514                 lpfc_els_flush_cmd(vport);
9515         spin_unlock_irq(&phba->port_list_lock);
9516
9517         return;
9518 }
9519
9520 /**
9521  * lpfc_send_els_failure_event - Posts an ELS command failure event
9522  * @phba: Pointer to hba context object.
9523  * @cmdiocbp: Pointer to command iocb which reported error.
9524  * @rspiocbp: Pointer to response iocb which reported error.
9525  *
9526  * This function sends an event when there is an ELS command
9527  * failure.
9528  **/
9529 void
9530 lpfc_send_els_failure_event(struct lpfc_hba *phba,
9531                         struct lpfc_iocbq *cmdiocbp,
9532                         struct lpfc_iocbq *rspiocbp)
9533 {
9534         struct lpfc_vport *vport = cmdiocbp->vport;
9535         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9536         struct lpfc_lsrjt_event lsrjt_event;
9537         struct lpfc_fabric_event_header fabric_event;
9538         struct ls_rjt stat;
9539         struct lpfc_nodelist *ndlp;
9540         uint32_t *pcmd;
9541         u32 ulp_status, ulp_word4;
9542
9543         ndlp = cmdiocbp->ndlp;
9544         if (!ndlp)
9545                 return;
9546
9547         ulp_status = get_job_ulpstatus(phba, rspiocbp);
9548         ulp_word4 = get_job_word4(phba, rspiocbp);
9549
9550         if (ulp_status == IOSTAT_LS_RJT) {
9551                 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
9552                 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
9553                 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
9554                         sizeof(struct lpfc_name));
9555                 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
9556                         sizeof(struct lpfc_name));
9557                 pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt;
9558                 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
9559                 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
9560                 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
9561                 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
9562                 fc_host_post_vendor_event(shost,
9563                         fc_get_event_number(),
9564                         sizeof(lsrjt_event),
9565                         (char *)&lsrjt_event,
9566                         LPFC_NL_VENDOR_ID);
9567                 return;
9568         }
9569         if (ulp_status == IOSTAT_NPORT_BSY ||
9570             ulp_status == IOSTAT_FABRIC_BSY) {
9571                 fabric_event.event_type = FC_REG_FABRIC_EVENT;
9572                 if (ulp_status == IOSTAT_NPORT_BSY)
9573                         fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
9574                 else
9575                         fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
9576                 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
9577                         sizeof(struct lpfc_name));
9578                 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
9579                         sizeof(struct lpfc_name));
9580                 fc_host_post_vendor_event(shost,
9581                         fc_get_event_number(),
9582                         sizeof(fabric_event),
9583                         (char *)&fabric_event,
9584                         LPFC_NL_VENDOR_ID);
9585                 return;
9586         }
9587
9588 }
9589
9590 /**
9591  * lpfc_send_els_event - Posts unsolicited els event
9592  * @vport: Pointer to vport object.
9593  * @ndlp: Pointer FC node object.
9594  * @payload: ELS command code type.
9595  *
9596  * This function posts an event when there is an incoming
9597  * unsolicited ELS command.
9598  **/
9599 static void
9600 lpfc_send_els_event(struct lpfc_vport *vport,
9601                     struct lpfc_nodelist *ndlp,
9602                     uint32_t *payload)
9603 {
9604         struct lpfc_els_event_header *els_data = NULL;
9605         struct lpfc_logo_event *logo_data = NULL;
9606         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9607
9608         if (*payload == ELS_CMD_LOGO) {
9609                 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
9610                 if (!logo_data) {
9611                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9612                                 "0148 Failed to allocate memory "
9613                                 "for LOGO event\n");
9614                         return;
9615                 }
9616                 els_data = &logo_data->header;
9617         } else {
9618                 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
9619                         GFP_KERNEL);
9620                 if (!els_data) {
9621                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9622                                 "0149 Failed to allocate memory "
9623                                 "for ELS event\n");
9624                         return;
9625                 }
9626         }
9627         els_data->event_type = FC_REG_ELS_EVENT;
9628         switch (*payload) {
9629         case ELS_CMD_PLOGI:
9630                 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
9631                 break;
9632         case ELS_CMD_PRLO:
9633                 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
9634                 break;
9635         case ELS_CMD_ADISC:
9636                 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
9637                 break;
9638         case ELS_CMD_LOGO:
9639                 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
9640                 /* Copy the WWPN in the LOGO payload */
9641                 memcpy(logo_data->logo_wwpn, &payload[2],
9642                         sizeof(struct lpfc_name));
9643                 break;
9644         default:
9645                 kfree(els_data);
9646                 return;
9647         }
9648         memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
9649         memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
9650         if (*payload == ELS_CMD_LOGO) {
9651                 fc_host_post_vendor_event(shost,
9652                         fc_get_event_number(),
9653                         sizeof(struct lpfc_logo_event),
9654                         (char *)logo_data,
9655                         LPFC_NL_VENDOR_ID);
9656                 kfree(logo_data);
9657         } else {
9658                 fc_host_post_vendor_event(shost,
9659                         fc_get_event_number(),
9660                         sizeof(struct lpfc_els_event_header),
9661                         (char *)els_data,
9662                         LPFC_NL_VENDOR_ID);
9663                 kfree(els_data);
9664         }
9665
9666         return;
9667 }
9668
9669
9670 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
9671                         FC_FPIN_LI_EVT_TYPES_INIT);
9672
9673 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types,
9674                         FC_FPIN_DELI_EVT_TYPES_INIT);
9675
9676 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types,
9677                         FC_FPIN_CONGN_EVT_TYPES_INIT);
9678
9679 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm,
9680                         fc_fpin_congn_severity_types,
9681                         FC_FPIN_CONGN_SEVERITY_INIT);
9682
9683
9684 /**
9685  * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
9686  * @phba: Pointer to phba object.
9687  * @wwnlist: Pointer to list of WWPNs in FPIN payload
9688  * @cnt: count of WWPNs in FPIN payload
9689  *
9690  * This routine is called by LI and PC descriptors.
9691  * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
9692  */
9693 static void
9694 lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
9695 {
9696         char buf[LPFC_FPIN_WWPN_LINE_SZ];
9697         __be64 wwn;
9698         u64 wwpn;
9699         int i, len;
9700         int line = 0;
9701         int wcnt = 0;
9702         bool endit = false;
9703
9704         len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
9705         for (i = 0; i < cnt; i++) {
9706                 /* Are we on the last WWPN */
9707                 if (i == (cnt - 1))
9708                         endit = true;
9709
9710                 /* Extract the next WWPN from the payload */
9711                 wwn = *wwnlist++;
9712                 wwpn = be64_to_cpu(wwn);
9713                 len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
9714                                  " %016llx", wwpn);
9715
9716                 /* Log a message if we are on the last WWPN
9717                  * or if we hit the max allowed per message.
9718                  */
9719                 wcnt++;
9720                 if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
9721                         buf[len] = 0;
9722                         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9723                                         "4686 %s\n", buf);
9724
9725                         /* Check if we reached the last WWPN */
9726                         if (endit)
9727                                 return;
9728
9729                         /* Limit the number of log message displayed per FPIN */
9730                         line++;
9731                         if (line == LPFC_FPIN_WWPN_NUM_LINE) {
9732                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9733                                                 "4687 %d WWPNs Truncated\n",
9734                                                 cnt - i - 1);
9735                                 return;
9736                         }
9737
9738                         /* Start over with next log message */
9739                         wcnt = 0;
9740                         len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
9741                                         "Additional WWPNs:");
9742                 }
9743         }
9744 }
9745
9746 /**
9747  * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
9748  * @phba: Pointer to phba object.
9749  * @tlv:  Pointer to the Link Integrity Notification Descriptor.
9750  *
9751  * This function processes a Link Integrity FPIN event by logging a message.
9752  **/
9753 static void
9754 lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9755 {
9756         struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
9757         const char *li_evt_str;
9758         u32 li_evt, cnt;
9759
9760         li_evt = be16_to_cpu(li->event_type);
9761         li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
9762         cnt = be32_to_cpu(li->pname_count);
9763
9764         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9765                         "4680 FPIN Link Integrity %s (x%x) "
9766                         "Detecting PN x%016llx Attached PN x%016llx "
9767                         "Duration %d mSecs Count %d Port Cnt %d\n",
9768                         li_evt_str, li_evt,
9769                         be64_to_cpu(li->detecting_wwpn),
9770                         be64_to_cpu(li->attached_wwpn),
9771                         be32_to_cpu(li->event_threshold),
9772                         be32_to_cpu(li->event_count), cnt);
9773
9774         lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt);
9775 }
9776
9777 /**
9778  * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event.
9779  * @phba: Pointer to hba object.
9780  * @tlv:  Pointer to the Delivery Notification Descriptor TLV
9781  *
9782  * This function processes a Delivery FPIN event by logging a message.
9783  **/
9784 static void
9785 lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9786 {
9787         struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv;
9788         const char *del_rsn_str;
9789         u32 del_rsn;
9790         __be32 *frame;
9791
9792         del_rsn = be16_to_cpu(del->deli_reason_code);
9793         del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn);
9794
9795         /* Skip over desc_tag/desc_len header to payload */
9796         frame = (__be32 *)(del + 1);
9797
9798         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9799                         "4681 FPIN Delivery %s (x%x) "
9800                         "Detecting PN x%016llx Attached PN x%016llx "
9801                         "DiscHdr0  x%08x "
9802                         "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x "
9803                         "DiscHdr4 x%08x DiscHdr5 x%08x\n",
9804                         del_rsn_str, del_rsn,
9805                         be64_to_cpu(del->detecting_wwpn),
9806                         be64_to_cpu(del->attached_wwpn),
9807                         be32_to_cpu(frame[0]),
9808                         be32_to_cpu(frame[1]),
9809                         be32_to_cpu(frame[2]),
9810                         be32_to_cpu(frame[3]),
9811                         be32_to_cpu(frame[4]),
9812                         be32_to_cpu(frame[5]));
9813 }
9814
9815 /**
9816  * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event.
9817  * @phba: Pointer to hba object.
9818  * @tlv:  Pointer to the Peer Congestion Notification Descriptor TLV
9819  *
9820  * This function processes a Peer Congestion FPIN event by logging a message.
9821  **/
9822 static void
9823 lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9824 {
9825         struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv;
9826         const char *pc_evt_str;
9827         u32 pc_evt, cnt;
9828
9829         pc_evt = be16_to_cpu(pc->event_type);
9830         pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt);
9831         cnt = be32_to_cpu(pc->pname_count);
9832
9833         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS,
9834                         "4684 FPIN Peer Congestion %s (x%x) "
9835                         "Duration %d mSecs "
9836                         "Detecting PN x%016llx Attached PN x%016llx "
9837                         "Impacted Port Cnt %d\n",
9838                         pc_evt_str, pc_evt,
9839                         be32_to_cpu(pc->event_period),
9840                         be64_to_cpu(pc->detecting_wwpn),
9841                         be64_to_cpu(pc->attached_wwpn),
9842                         cnt);
9843
9844         lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt);
9845 }
9846
9847 /**
9848  * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
9849  * @phba: Pointer to hba object.
9850  * @tlv:  Pointer to the Congestion Notification Descriptor TLV
9851  *
9852  * This function processes an FPIN Congestion Notifiction.  The notification
9853  * could be an Alarm or Warning.  This routine feeds that data into driver's
9854  * running congestion algorithm. It also processes the FPIN by
9855  * logging a message. It returns 1 to indicate deliver this message
9856  * to the upper layer or 0 to indicate don't deliver it.
9857  **/
9858 static int
9859 lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9860 {
9861         struct lpfc_cgn_info *cp;
9862         struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
9863         const char *cgn_evt_str;
9864         u32 cgn_evt;
9865         const char *cgn_sev_str;
9866         u32 cgn_sev;
9867         uint16_t value;
9868         u32 crc;
9869         bool nm_log = false;
9870         int rc = 1;
9871
9872         cgn_evt = be16_to_cpu(cgn->event_type);
9873         cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt);
9874         cgn_sev = cgn->severity;
9875         cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev);
9876
9877         /* The driver only takes action on a Credit Stall or Oversubscription
9878          * event type to engage the IO algorithm.  The driver prints an
9879          * unmaskable message only for Lost Credit and Credit Stall.
9880          * TODO: Still need to have definition of host action on clear,
9881          *       lost credit and device specific event types.
9882          */
9883         switch (cgn_evt) {
9884         case FPIN_CONGN_LOST_CREDIT:
9885                 nm_log = true;
9886                 break;
9887         case FPIN_CONGN_CREDIT_STALL:
9888                 nm_log = true;
9889                 fallthrough;
9890         case FPIN_CONGN_OVERSUBSCRIPTION:
9891                 if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
9892                         nm_log = false;
9893                 switch (cgn_sev) {
9894                 case FPIN_CONGN_SEVERITY_ERROR:
9895                         /* Take action here for an Alarm event */
9896                         if (phba->cmf_active_mode != LPFC_CFG_OFF) {
9897                                 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
9898                                         /* Track of alarm cnt for SYNC_WQE */
9899                                         atomic_inc(&phba->cgn_sync_alarm_cnt);
9900                                 }
9901                                 /* Track alarm cnt for cgn_info regardless
9902                                  * of whether CMF is configured for Signals
9903                                  * or FPINs.
9904                                  */
9905                                 atomic_inc(&phba->cgn_fabric_alarm_cnt);
9906                                 goto cleanup;
9907                         }
9908                         break;
9909                 case FPIN_CONGN_SEVERITY_WARNING:
9910                         /* Take action here for a Warning event */
9911                         if (phba->cmf_active_mode != LPFC_CFG_OFF) {
9912                                 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
9913                                         /* Track of warning cnt for SYNC_WQE */
9914                                         atomic_inc(&phba->cgn_sync_warn_cnt);
9915                                 }
9916                                 /* Track warning cnt and freq for cgn_info
9917                                  * regardless of whether CMF is configured for
9918                                  * Signals or FPINs.
9919                                  */
9920                                 atomic_inc(&phba->cgn_fabric_warn_cnt);
9921 cleanup:
9922                                 /* Save frequency in ms */
9923                                 phba->cgn_fpin_frequency =
9924                                         be32_to_cpu(cgn->event_period);
9925                                 value = phba->cgn_fpin_frequency;
9926                                 if (phba->cgn_i) {
9927                                         cp = (struct lpfc_cgn_info *)
9928                                                 phba->cgn_i->virt;
9929                                         cp->cgn_alarm_freq =
9930                                                 cpu_to_le16(value);
9931                                         cp->cgn_warn_freq =
9932                                                 cpu_to_le16(value);
9933                                         crc = lpfc_cgn_calc_crc32
9934                                                 (cp,
9935                                                 LPFC_CGN_INFO_SZ,
9936                                                 LPFC_CGN_CRC32_SEED);
9937                                         cp->cgn_info_crc = cpu_to_le32(crc);
9938                                 }
9939
9940                                 /* Don't deliver to upper layer since
9941                                  * driver took action on this tlv.
9942                                  */
9943                                 rc = 0;
9944                         }
9945                         break;
9946                 }
9947                 break;
9948         }
9949
9950         /* Change the log level to unmaskable for the following event types. */
9951         lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
9952                         LOG_CGN_MGMT | LOG_ELS,
9953                         "4683 FPIN CONGESTION %s type %s (x%x) Event "
9954                         "Duration %d mSecs\n",
9955                         cgn_sev_str, cgn_evt_str, cgn_evt,
9956                         be32_to_cpu(cgn->event_period));
9957         return rc;
9958 }
9959
9960 void
9961 lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length)
9962 {
9963         struct lpfc_hba *phba = vport->phba;
9964         struct fc_els_fpin *fpin = (struct fc_els_fpin *)p;
9965         struct fc_tlv_desc *tlv, *first_tlv, *current_tlv;
9966         const char *dtag_nm;
9967         int desc_cnt = 0, bytes_remain, cnt;
9968         u32 dtag, deliver = 0;
9969         int len;
9970
9971         /* FPINs handled only if we are in the right discovery state */
9972         if (vport->port_state < LPFC_DISC_AUTH)
9973                 return;
9974
9975         /* make sure there is the full fpin header */
9976         if (fpin_length < sizeof(struct fc_els_fpin))
9977                 return;
9978
9979         /* Sanity check descriptor length. The desc_len value does not
9980          * include space for the ELS command and the desc_len fields.
9981          */
9982         len = be32_to_cpu(fpin->desc_len);
9983         if (fpin_length < len + sizeof(struct fc_els_fpin)) {
9984                 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
9985                                 "4671 Bad ELS FPIN length %d: %d\n",
9986                                 len, fpin_length);
9987                 return;
9988         }
9989
9990         tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
9991         first_tlv = tlv;
9992         bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
9993         bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
9994
9995         /* process each descriptor separately */
9996         while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
9997                bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
9998                 dtag = be32_to_cpu(tlv->desc_tag);
9999                 switch (dtag) {
10000                 case ELS_DTAG_LNK_INTEGRITY:
10001                         lpfc_els_rcv_fpin_li(phba, tlv);
10002                         deliver = 1;
10003                         break;
10004                 case ELS_DTAG_DELIVERY:
10005                         lpfc_els_rcv_fpin_del(phba, tlv);
10006                         deliver = 1;
10007                         break;
10008                 case ELS_DTAG_PEER_CONGEST:
10009                         lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
10010                         deliver = 1;
10011                         break;
10012                 case ELS_DTAG_CONGESTION:
10013                         deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
10014                         break;
10015                 default:
10016                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10017                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10018                                         "4678 unknown FPIN descriptor[%d]: "
10019                                         "tag x%x (%s)\n",
10020                                         desc_cnt, dtag, dtag_nm);
10021
10022                         /* If descriptor is bad, drop the rest of the data */
10023                         return;
10024                 }
10025                 lpfc_cgn_update_stat(phba, dtag);
10026                 cnt = be32_to_cpu(tlv->desc_len);
10027
10028                 /* Sanity check descriptor length. The desc_len value does not
10029                  * include space for the desc_tag and the desc_len fields.
10030                  */
10031                 len -= (cnt + sizeof(struct fc_tlv_desc));
10032                 if (len < 0) {
10033                         dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10034                         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10035                                         "4672 Bad FPIN descriptor TLV length "
10036                                         "%d: %d %d %s\n",
10037                                         cnt, len, fpin_length, dtag_nm);
10038                         return;
10039                 }
10040
10041                 current_tlv = tlv;
10042                 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
10043                 tlv = fc_tlv_next_desc(tlv);
10044
10045                 /* Format payload such that the FPIN delivered to the
10046                  * upper layer is a single descriptor FPIN.
10047                  */
10048                 if (desc_cnt)
10049                         memcpy(first_tlv, current_tlv,
10050                                (cnt + sizeof(struct fc_els_fpin)));
10051
10052                 /* Adjust the length so that it only reflects a
10053                  * single descriptor FPIN.
10054                  */
10055                 fpin_length = cnt + sizeof(struct fc_els_fpin);
10056                 fpin->desc_len = cpu_to_be32(fpin_length);
10057                 fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
10058
10059                 /* Send every descriptor individually to the upper layer */
10060                 if (deliver)
10061                         fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
10062                                          fpin_length, (char *)fpin);
10063                 desc_cnt++;
10064         }
10065 }
10066
10067 /**
10068  * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
10069  * @phba: pointer to lpfc hba data structure.
10070  * @pring: pointer to a SLI ring.
10071  * @vport: pointer to a host virtual N_Port data structure.
10072  * @elsiocb: pointer to lpfc els command iocb data structure.
10073  *
10074  * This routine is used for processing the IOCB associated with a unsolicited
10075  * event. It first determines whether there is an existing ndlp that matches
10076  * the DID from the unsolicited IOCB. If not, it will create a new one with
10077  * the DID from the unsolicited IOCB. The ELS command from the unsolicited
10078  * IOCB is then used to invoke the proper routine and to set up proper state
10079  * of the discovery state machine.
10080  **/
10081 static void
10082 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10083                       struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
10084 {
10085         struct lpfc_nodelist *ndlp;
10086         struct ls_rjt stat;
10087         u32 *payload, payload_len;
10088         u32 cmd = 0, did = 0, newnode, status = 0;
10089         uint8_t rjt_exp, rjt_err = 0, init_link = 0;
10090         struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10091         LPFC_MBOXQ_t *mbox;
10092
10093         if (!vport || !elsiocb->cmd_dmabuf)
10094                 goto dropit;
10095
10096         newnode = 0;
10097         wcqe_cmpl = &elsiocb->wcqe_cmpl;
10098         payload = elsiocb->cmd_dmabuf->virt;
10099         if (phba->sli_rev == LPFC_SLI_REV4)
10100                 payload_len = wcqe_cmpl->total_data_placed;
10101         else
10102                 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
10103         status = get_job_ulpstatus(phba, elsiocb);
10104         cmd = *payload;
10105         if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
10106                 lpfc_sli3_post_buffer(phba, pring, 1);
10107
10108         did = get_job_els_rsp64_did(phba, elsiocb);
10109         if (status) {
10110                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10111                         "RCV Unsol ELS:  status:x%x/x%x did:x%x",
10112                         status, get_job_word4(phba, elsiocb), did);
10113                 goto dropit;
10114         }
10115
10116         /* Check to see if link went down during discovery */
10117         if (lpfc_els_chk_latt(vport))
10118                 goto dropit;
10119
10120         /* Ignore traffic received during vport shutdown. */
10121         if (vport->load_flag & FC_UNLOADING)
10122                 goto dropit;
10123
10124         /* If NPort discovery is delayed drop incoming ELS */
10125         if ((vport->fc_flag & FC_DISC_DELAYED) &&
10126                         (cmd != ELS_CMD_PLOGI))
10127                 goto dropit;
10128
10129         ndlp = lpfc_findnode_did(vport, did);
10130         if (!ndlp) {
10131                 /* Cannot find existing Fabric ndlp, so allocate a new one */
10132                 ndlp = lpfc_nlp_init(vport, did);
10133                 if (!ndlp)
10134                         goto dropit;
10135                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10136                 newnode = 1;
10137                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
10138                         ndlp->nlp_type |= NLP_FABRIC;
10139         } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
10140                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10141                 newnode = 1;
10142         }
10143
10144         phba->fc_stat.elsRcvFrame++;
10145
10146         /*
10147          * Do not process any unsolicited ELS commands
10148          * if the ndlp is in DEV_LOSS
10149          */
10150         spin_lock_irq(&ndlp->lock);
10151         if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) {
10152                 spin_unlock_irq(&ndlp->lock);
10153                 if (newnode)
10154                         lpfc_nlp_put(ndlp);
10155                 goto dropit;
10156         }
10157         spin_unlock_irq(&ndlp->lock);
10158
10159         elsiocb->ndlp = lpfc_nlp_get(ndlp);
10160         if (!elsiocb->ndlp)
10161                 goto dropit;
10162         elsiocb->vport = vport;
10163
10164         if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
10165                 cmd &= ELS_CMD_MASK;
10166         }
10167         /* ELS command <elsCmd> received from NPORT <did> */
10168         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10169                          "0112 ELS command x%x received from NPORT x%x "
10170                          "refcnt %d Data: x%x x%x x%x x%x\n",
10171                          cmd, did, kref_read(&ndlp->kref), vport->port_state,
10172                          vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
10173
10174         /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
10175         if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
10176             (cmd != ELS_CMD_FLOGI) &&
10177             !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) {
10178                 rjt_err = LSRJT_LOGICAL_BSY;
10179                 rjt_exp = LSEXP_NOTHING_MORE;
10180                 goto lsrjt;
10181         }
10182
10183         switch (cmd) {
10184         case ELS_CMD_PLOGI:
10185                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10186                         "RCV PLOGI:       did:x%x/ste:x%x flg:x%x",
10187                         did, vport->port_state, ndlp->nlp_flag);
10188
10189                 phba->fc_stat.elsRcvPLOGI++;
10190                 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
10191                 if (phba->sli_rev == LPFC_SLI_REV4 &&
10192                     (phba->pport->fc_flag & FC_PT2PT)) {
10193                         vport->fc_prevDID = vport->fc_myDID;
10194                         /* Our DID needs to be updated before registering
10195                          * the vfi. This is done in lpfc_rcv_plogi but
10196                          * that is called after the reg_vfi.
10197                          */
10198                         vport->fc_myDID =
10199                                 bf_get(els_rsp64_sid,
10200                                        &elsiocb->wqe.xmit_els_rsp);
10201                         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10202                                          "3312 Remote port assigned DID x%x "
10203                                          "%x\n", vport->fc_myDID,
10204                                          vport->fc_prevDID);
10205                 }
10206
10207                 lpfc_send_els_event(vport, ndlp, payload);
10208
10209                 /* If Nport discovery is delayed, reject PLOGIs */
10210                 if (vport->fc_flag & FC_DISC_DELAYED) {
10211                         rjt_err = LSRJT_UNABLE_TPC;
10212                         rjt_exp = LSEXP_NOTHING_MORE;
10213                         break;
10214                 }
10215
10216                 if (vport->port_state < LPFC_DISC_AUTH) {
10217                         if (!(phba->pport->fc_flag & FC_PT2PT) ||
10218                                 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
10219                                 rjt_err = LSRJT_UNABLE_TPC;
10220                                 rjt_exp = LSEXP_NOTHING_MORE;
10221                                 break;
10222                         }
10223                 }
10224
10225                 spin_lock_irq(&ndlp->lock);
10226                 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
10227                 spin_unlock_irq(&ndlp->lock);
10228
10229                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10230                                         NLP_EVT_RCV_PLOGI);
10231
10232                 break;
10233         case ELS_CMD_FLOGI:
10234                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10235                         "RCV FLOGI:       did:x%x/ste:x%x flg:x%x",
10236                         did, vport->port_state, ndlp->nlp_flag);
10237
10238                 phba->fc_stat.elsRcvFLOGI++;
10239
10240                 /* If the driver believes fabric discovery is done and is ready,
10241                  * bounce the link.  There is some descrepancy.
10242                  */
10243                 if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
10244                     vport->fc_flag & FC_PT2PT &&
10245                     vport->rcv_flogi_cnt >= 1) {
10246                         rjt_err = LSRJT_LOGICAL_BSY;
10247                         rjt_exp = LSEXP_NOTHING_MORE;
10248                         init_link++;
10249                         goto lsrjt;
10250                 }
10251
10252                 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
10253                 /* retain node if our response is deferred */
10254                 if (phba->defer_flogi_acc_flag)
10255                         break;
10256                 if (newnode)
10257                         lpfc_disc_state_machine(vport, ndlp, NULL,
10258                                         NLP_EVT_DEVICE_RM);
10259                 break;
10260         case ELS_CMD_LOGO:
10261                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10262                         "RCV LOGO:        did:x%x/ste:x%x flg:x%x",
10263                         did, vport->port_state, ndlp->nlp_flag);
10264
10265                 phba->fc_stat.elsRcvLOGO++;
10266                 lpfc_send_els_event(vport, ndlp, payload);
10267                 if (vport->port_state < LPFC_DISC_AUTH) {
10268                         rjt_err = LSRJT_UNABLE_TPC;
10269                         rjt_exp = LSEXP_NOTHING_MORE;
10270                         break;
10271                 }
10272                 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
10273                 if (newnode)
10274                         lpfc_disc_state_machine(vport, ndlp, NULL,
10275                                         NLP_EVT_DEVICE_RM);
10276                 break;
10277         case ELS_CMD_PRLO:
10278                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10279                         "RCV PRLO:        did:x%x/ste:x%x flg:x%x",
10280                         did, vport->port_state, ndlp->nlp_flag);
10281
10282                 phba->fc_stat.elsRcvPRLO++;
10283                 lpfc_send_els_event(vport, ndlp, payload);
10284                 if (vport->port_state < LPFC_DISC_AUTH) {
10285                         rjt_err = LSRJT_UNABLE_TPC;
10286                         rjt_exp = LSEXP_NOTHING_MORE;
10287                         break;
10288                 }
10289                 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
10290                 break;
10291         case ELS_CMD_LCB:
10292                 phba->fc_stat.elsRcvLCB++;
10293                 lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
10294                 break;
10295         case ELS_CMD_RDP:
10296                 phba->fc_stat.elsRcvRDP++;
10297                 lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
10298                 break;
10299         case ELS_CMD_RSCN:
10300                 phba->fc_stat.elsRcvRSCN++;
10301                 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
10302                 if (newnode)
10303                         lpfc_disc_state_machine(vport, ndlp, NULL,
10304                                         NLP_EVT_DEVICE_RM);
10305                 break;
10306         case ELS_CMD_ADISC:
10307                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10308                         "RCV ADISC:       did:x%x/ste:x%x flg:x%x",
10309                         did, vport->port_state, ndlp->nlp_flag);
10310
10311                 lpfc_send_els_event(vport, ndlp, payload);
10312                 phba->fc_stat.elsRcvADISC++;
10313                 if (vport->port_state < LPFC_DISC_AUTH) {
10314                         rjt_err = LSRJT_UNABLE_TPC;
10315                         rjt_exp = LSEXP_NOTHING_MORE;
10316                         break;
10317                 }
10318                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10319                                         NLP_EVT_RCV_ADISC);
10320                 break;
10321         case ELS_CMD_PDISC:
10322                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10323                         "RCV PDISC:       did:x%x/ste:x%x flg:x%x",
10324                         did, vport->port_state, ndlp->nlp_flag);
10325
10326                 phba->fc_stat.elsRcvPDISC++;
10327                 if (vport->port_state < LPFC_DISC_AUTH) {
10328                         rjt_err = LSRJT_UNABLE_TPC;
10329                         rjt_exp = LSEXP_NOTHING_MORE;
10330                         break;
10331                 }
10332                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10333                                         NLP_EVT_RCV_PDISC);
10334                 break;
10335         case ELS_CMD_FARPR:
10336                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10337                         "RCV FARPR:       did:x%x/ste:x%x flg:x%x",
10338                         did, vport->port_state, ndlp->nlp_flag);
10339
10340                 phba->fc_stat.elsRcvFARPR++;
10341                 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
10342                 break;
10343         case ELS_CMD_FARP:
10344                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10345                         "RCV FARP:        did:x%x/ste:x%x flg:x%x",
10346                         did, vport->port_state, ndlp->nlp_flag);
10347
10348                 phba->fc_stat.elsRcvFARP++;
10349                 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
10350                 break;
10351         case ELS_CMD_FAN:
10352                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10353                         "RCV FAN:         did:x%x/ste:x%x flg:x%x",
10354                         did, vport->port_state, ndlp->nlp_flag);
10355
10356                 phba->fc_stat.elsRcvFAN++;
10357                 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
10358                 break;
10359         case ELS_CMD_PRLI:
10360         case ELS_CMD_NVMEPRLI:
10361                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10362                         "RCV PRLI:        did:x%x/ste:x%x flg:x%x",
10363                         did, vport->port_state, ndlp->nlp_flag);
10364
10365                 phba->fc_stat.elsRcvPRLI++;
10366                 if ((vport->port_state < LPFC_DISC_AUTH) &&
10367                     (vport->fc_flag & FC_FABRIC)) {
10368                         rjt_err = LSRJT_UNABLE_TPC;
10369                         rjt_exp = LSEXP_NOTHING_MORE;
10370                         break;
10371                 }
10372                 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
10373                 break;
10374         case ELS_CMD_LIRR:
10375                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10376                         "RCV LIRR:        did:x%x/ste:x%x flg:x%x",
10377                         did, vport->port_state, ndlp->nlp_flag);
10378
10379                 phba->fc_stat.elsRcvLIRR++;
10380                 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
10381                 if (newnode)
10382                         lpfc_disc_state_machine(vport, ndlp, NULL,
10383                                         NLP_EVT_DEVICE_RM);
10384                 break;
10385         case ELS_CMD_RLS:
10386                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10387                         "RCV RLS:         did:x%x/ste:x%x flg:x%x",
10388                         did, vport->port_state, ndlp->nlp_flag);
10389
10390                 phba->fc_stat.elsRcvRLS++;
10391                 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
10392                 if (newnode)
10393                         lpfc_disc_state_machine(vport, ndlp, NULL,
10394                                         NLP_EVT_DEVICE_RM);
10395                 break;
10396         case ELS_CMD_RPL:
10397                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10398                         "RCV RPL:         did:x%x/ste:x%x flg:x%x",
10399                         did, vport->port_state, ndlp->nlp_flag);
10400
10401                 phba->fc_stat.elsRcvRPL++;
10402                 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
10403                 if (newnode)
10404                         lpfc_disc_state_machine(vport, ndlp, NULL,
10405                                         NLP_EVT_DEVICE_RM);
10406                 break;
10407         case ELS_CMD_RNID:
10408                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10409                         "RCV RNID:        did:x%x/ste:x%x flg:x%x",
10410                         did, vport->port_state, ndlp->nlp_flag);
10411
10412                 phba->fc_stat.elsRcvRNID++;
10413                 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
10414                 if (newnode)
10415                         lpfc_disc_state_machine(vport, ndlp, NULL,
10416                                         NLP_EVT_DEVICE_RM);
10417                 break;
10418         case ELS_CMD_RTV:
10419                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10420                         "RCV RTV:        did:x%x/ste:x%x flg:x%x",
10421                         did, vport->port_state, ndlp->nlp_flag);
10422                 phba->fc_stat.elsRcvRTV++;
10423                 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
10424                 if (newnode)
10425                         lpfc_disc_state_machine(vport, ndlp, NULL,
10426                                         NLP_EVT_DEVICE_RM);
10427                 break;
10428         case ELS_CMD_RRQ:
10429                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10430                         "RCV RRQ:         did:x%x/ste:x%x flg:x%x",
10431                         did, vport->port_state, ndlp->nlp_flag);
10432
10433                 phba->fc_stat.elsRcvRRQ++;
10434                 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
10435                 if (newnode)
10436                         lpfc_disc_state_machine(vport, ndlp, NULL,
10437                                         NLP_EVT_DEVICE_RM);
10438                 break;
10439         case ELS_CMD_ECHO:
10440                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10441                         "RCV ECHO:        did:x%x/ste:x%x flg:x%x",
10442                         did, vport->port_state, ndlp->nlp_flag);
10443
10444                 phba->fc_stat.elsRcvECHO++;
10445                 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
10446                 if (newnode)
10447                         lpfc_disc_state_machine(vport, ndlp, NULL,
10448                                         NLP_EVT_DEVICE_RM);
10449                 break;
10450         case ELS_CMD_REC:
10451                 /* receive this due to exchange closed */
10452                 rjt_err = LSRJT_UNABLE_TPC;
10453                 rjt_exp = LSEXP_INVALID_OX_RX;
10454                 break;
10455         case ELS_CMD_FPIN:
10456                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10457                                       "RCV FPIN:       did:x%x/ste:x%x flg:x%x",
10458                                       did, vport->port_state, ndlp->nlp_flag);
10459
10460                 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
10461                                   payload_len);
10462
10463                 /* There are no replies, so no rjt codes */
10464                 break;
10465         case ELS_CMD_EDC:
10466                 lpfc_els_rcv_edc(vport, elsiocb, ndlp);
10467                 break;
10468         case ELS_CMD_RDF:
10469                 phba->fc_stat.elsRcvRDF++;
10470                 /* Accept RDF only from fabric controller */
10471                 if (did != Fabric_Cntl_DID) {
10472                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
10473                                          "1115 Received RDF from invalid DID "
10474                                          "x%x\n", did);
10475                         rjt_err = LSRJT_PROTOCOL_ERR;
10476                         rjt_exp = LSEXP_NOTHING_MORE;
10477                         goto lsrjt;
10478                 }
10479
10480                 lpfc_els_rcv_rdf(vport, elsiocb, ndlp);
10481                 break;
10482         default:
10483                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10484                         "RCV ELS cmd:     cmd:x%x did:x%x/ste:x%x",
10485                         cmd, did, vport->port_state);
10486
10487                 /* Unsupported ELS command, reject */
10488                 rjt_err = LSRJT_CMD_UNSUPPORTED;
10489                 rjt_exp = LSEXP_NOTHING_MORE;
10490
10491                 /* Unknown ELS command <elsCmd> received from NPORT <did> */
10492                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10493                                  "0115 Unknown ELS command x%x "
10494                                  "received from NPORT x%x\n", cmd, did);
10495                 if (newnode)
10496                         lpfc_disc_state_machine(vport, ndlp, NULL,
10497                                         NLP_EVT_DEVICE_RM);
10498                 break;
10499         }
10500
10501 lsrjt:
10502         /* check if need to LS_RJT received ELS cmd */
10503         if (rjt_err) {
10504                 memset(&stat, 0, sizeof(stat));
10505                 stat.un.b.lsRjtRsnCode = rjt_err;
10506                 stat.un.b.lsRjtRsnCodeExp = rjt_exp;
10507                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
10508                                     NULL);
10509                 /* Remove the reference from above for new nodes. */
10510                 if (newnode)
10511                         lpfc_disc_state_machine(vport, ndlp, NULL,
10512                                         NLP_EVT_DEVICE_RM);
10513         }
10514
10515         /* Release the reference on this elsiocb, not the ndlp. */
10516         lpfc_nlp_put(elsiocb->ndlp);
10517         elsiocb->ndlp = NULL;
10518
10519         /* Special case.  Driver received an unsolicited command that
10520          * unsupportable given the driver's current state.  Reset the
10521          * link and start over.
10522          */
10523         if (init_link) {
10524                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10525                 if (!mbox)
10526                         return;
10527                 lpfc_linkdown(phba);
10528                 lpfc_init_link(phba, mbox,
10529                                phba->cfg_topology,
10530                                phba->cfg_link_speed);
10531                 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
10532                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
10533                 mbox->vport = vport;
10534                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
10535                     MBX_NOT_FINISHED)
10536                         mempool_free(mbox, phba->mbox_mem_pool);
10537         }
10538
10539         return;
10540
10541 dropit:
10542         if (vport && !(vport->load_flag & FC_UNLOADING))
10543                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10544                         "0111 Dropping received ELS cmd "
10545                         "Data: x%x x%x x%x x%x\n",
10546                         cmd, status, get_job_word4(phba, elsiocb), did);
10547
10548         phba->fc_stat.elsRcvDrop++;
10549 }
10550
10551 /**
10552  * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
10553  * @phba: pointer to lpfc hba data structure.
10554  * @pring: pointer to a SLI ring.
10555  * @elsiocb: pointer to lpfc els iocb data structure.
10556  *
10557  * This routine is used to process an unsolicited event received from a SLI
10558  * (Service Level Interface) ring. The actual processing of the data buffer
10559  * associated with the unsolicited event is done by invoking the routine
10560  * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
10561  * SLI ring on which the unsolicited event was received.
10562  **/
10563 void
10564 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10565                      struct lpfc_iocbq *elsiocb)
10566 {
10567         struct lpfc_vport *vport = elsiocb->vport;
10568         u32 ulp_command, status, parameter, bde_count = 0;
10569         IOCB_t *icmd;
10570         struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10571         struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
10572         struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
10573         dma_addr_t paddr;
10574
10575         elsiocb->cmd_dmabuf = NULL;
10576         elsiocb->rsp_dmabuf = NULL;
10577         elsiocb->bpl_dmabuf = NULL;
10578
10579         wcqe_cmpl = &elsiocb->wcqe_cmpl;
10580         ulp_command = get_job_cmnd(phba, elsiocb);
10581         status = get_job_ulpstatus(phba, elsiocb);
10582         parameter = get_job_word4(phba, elsiocb);
10583         if (phba->sli_rev == LPFC_SLI_REV4)
10584                 bde_count = wcqe_cmpl->word3;
10585         else
10586                 bde_count = elsiocb->iocb.ulpBdeCount;
10587
10588         if (status == IOSTAT_NEED_BUFFER) {
10589                 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
10590         } else if (status == IOSTAT_LOCAL_REJECT &&
10591                    (parameter & IOERR_PARAM_MASK) ==
10592                    IOERR_RCV_BUFFER_WAITING) {
10593                 phba->fc_stat.NoRcvBuf++;
10594                 /* Not enough posted buffers; Try posting more buffers */
10595                 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
10596                         lpfc_sli3_post_buffer(phba, pring, 0);
10597                 return;
10598         }
10599
10600         if (phba->sli_rev == LPFC_SLI_REV3) {
10601                 icmd = &elsiocb->iocb;
10602                 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
10603                     (ulp_command == CMD_IOCB_RCV_ELS64_CX ||
10604                      ulp_command == CMD_IOCB_RCV_SEQ64_CX)) {
10605                         if (icmd->unsli3.rcvsli3.vpi == 0xffff)
10606                                 vport = phba->pport;
10607                         else
10608                                 vport = lpfc_find_vport_by_vpid(phba,
10609                                                 icmd->unsli3.rcvsli3.vpi);
10610                 }
10611         }
10612
10613         /* If there are no BDEs associated
10614          * with this IOCB, there is nothing to do.
10615          */
10616         if (bde_count == 0)
10617                 return;
10618
10619         /* Account for SLI2 or SLI3 and later unsolicited buffering */
10620         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
10621                 elsiocb->cmd_dmabuf = bdeBuf1;
10622                 if (bde_count == 2)
10623                         elsiocb->bpl_dmabuf = bdeBuf2;
10624         } else {
10625                 icmd = &elsiocb->iocb;
10626                 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
10627                                  icmd->un.cont64[0].addrLow);
10628                 elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
10629                                                                paddr);
10630                 if (bde_count == 2) {
10631                         paddr = getPaddr(icmd->un.cont64[1].addrHigh,
10632                                          icmd->un.cont64[1].addrLow);
10633                         elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
10634                                                                         pring,
10635                                                                         paddr);
10636                 }
10637         }
10638
10639         lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
10640         /*
10641          * The different unsolicited event handlers would tell us
10642          * if they are done with "mp" by setting cmd_dmabuf to NULL.
10643          */
10644         if (elsiocb->cmd_dmabuf) {
10645                 lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
10646                 elsiocb->cmd_dmabuf = NULL;
10647         }
10648
10649         if (elsiocb->bpl_dmabuf) {
10650                 lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
10651                 elsiocb->bpl_dmabuf = NULL;
10652         }
10653
10654 }
10655
10656 static void
10657 lpfc_start_fdmi(struct lpfc_vport *vport)
10658 {
10659         struct lpfc_nodelist *ndlp;
10660
10661         /* If this is the first time, allocate an ndlp and initialize
10662          * it. Otherwise, make sure the node is enabled and then do the
10663          * login.
10664          */
10665         ndlp = lpfc_findnode_did(vport, FDMI_DID);
10666         if (!ndlp) {
10667                 ndlp = lpfc_nlp_init(vport, FDMI_DID);
10668                 if (ndlp) {
10669                         ndlp->nlp_type |= NLP_FABRIC;
10670                 } else {
10671                         return;
10672                 }
10673         }
10674
10675         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
10676         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
10677 }
10678
10679 /**
10680  * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
10681  * @phba: pointer to lpfc hba data structure.
10682  * @vport: pointer to a virtual N_Port data structure.
10683  *
10684  * This routine issues a Port Login (PLOGI) to the Name Server with
10685  * State Change Request (SCR) for a @vport. This routine will create an
10686  * ndlp for the Name Server associated to the @vport if such node does
10687  * not already exist. The PLOGI to Name Server is issued by invoking the
10688  * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
10689  * (FDMI) is configured to the @vport, a FDMI node will be created and
10690  * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
10691  **/
10692 void
10693 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
10694 {
10695         struct lpfc_nodelist *ndlp;
10696         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
10697
10698         /*
10699          * If lpfc_delay_discovery parameter is set and the clean address
10700          * bit is cleared and fc fabric parameters chenged, delay FC NPort
10701          * discovery.
10702          */
10703         spin_lock_irq(shost->host_lock);
10704         if (vport->fc_flag & FC_DISC_DELAYED) {
10705                 spin_unlock_irq(shost->host_lock);
10706                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10707                                  "3334 Delay fc port discovery for %d secs\n",
10708                                  phba->fc_ratov);
10709                 mod_timer(&vport->delayed_disc_tmo,
10710                         jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
10711                 return;
10712         }
10713         spin_unlock_irq(shost->host_lock);
10714
10715         ndlp = lpfc_findnode_did(vport, NameServer_DID);
10716         if (!ndlp) {
10717                 ndlp = lpfc_nlp_init(vport, NameServer_DID);
10718                 if (!ndlp) {
10719                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
10720                                 lpfc_disc_start(vport);
10721                                 return;
10722                         }
10723                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10724                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10725                                          "0251 NameServer login: no memory\n");
10726                         return;
10727                 }
10728         }
10729
10730         ndlp->nlp_type |= NLP_FABRIC;
10731
10732         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
10733
10734         if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
10735                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10736                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10737                                  "0252 Cannot issue NameServer login\n");
10738                 return;
10739         }
10740
10741         if ((phba->cfg_enable_SmartSAN ||
10742              (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) &&
10743              (vport->load_flag & FC_ALLOW_FDMI))
10744                 lpfc_start_fdmi(vport);
10745 }
10746
10747 /**
10748  * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
10749  * @phba: pointer to lpfc hba data structure.
10750  * @pmb: pointer to the driver internal queue element for mailbox command.
10751  *
10752  * This routine is the completion callback function to register new vport
10753  * mailbox command. If the new vport mailbox command completes successfully,
10754  * the fabric registration login shall be performed on physical port (the
10755  * new vport created is actually a physical port, with VPI 0) or the port
10756  * login to Name Server for State Change Request (SCR) will be performed
10757  * on virtual port (real virtual port, with VPI greater than 0).
10758  **/
10759 static void
10760 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
10761 {
10762         struct lpfc_vport *vport = pmb->vport;
10763         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
10764         struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
10765         MAILBOX_t *mb = &pmb->u.mb;
10766         int rc;
10767
10768         spin_lock_irq(shost->host_lock);
10769         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
10770         spin_unlock_irq(shost->host_lock);
10771
10772         if (mb->mbxStatus) {
10773                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10774                                 "0915 Register VPI failed : Status: x%x"
10775                                 " upd bit: x%x \n", mb->mbxStatus,
10776                                  mb->un.varRegVpi.upd);
10777                 if (phba->sli_rev == LPFC_SLI_REV4 &&
10778                         mb->un.varRegVpi.upd)
10779                         goto mbox_err_exit ;
10780
10781                 switch (mb->mbxStatus) {
10782                 case 0x11:      /* unsupported feature */
10783                 case 0x9603:    /* max_vpi exceeded */
10784                 case 0x9602:    /* Link event since CLEAR_LA */
10785                         /* giving up on vport registration */
10786                         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10787                         spin_lock_irq(shost->host_lock);
10788                         vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
10789                         spin_unlock_irq(shost->host_lock);
10790                         lpfc_can_disctmo(vport);
10791                         break;
10792                 /* If reg_vpi fail with invalid VPI status, re-init VPI */
10793                 case 0x20:
10794                         spin_lock_irq(shost->host_lock);
10795                         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
10796                         spin_unlock_irq(shost->host_lock);
10797                         lpfc_init_vpi(phba, pmb, vport->vpi);
10798                         pmb->vport = vport;
10799                         pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
10800                         rc = lpfc_sli_issue_mbox(phba, pmb,
10801                                 MBX_NOWAIT);
10802                         if (rc == MBX_NOT_FINISHED) {
10803                                 lpfc_printf_vlog(vport, KERN_ERR,
10804                                                  LOG_TRACE_EVENT,
10805                                         "2732 Failed to issue INIT_VPI"
10806                                         " mailbox command\n");
10807                         } else {
10808                                 lpfc_nlp_put(ndlp);
10809                                 return;
10810                         }
10811                         fallthrough;
10812                 default:
10813                         /* Try to recover from this error */
10814                         if (phba->sli_rev == LPFC_SLI_REV4)
10815                                 lpfc_sli4_unreg_all_rpis(vport);
10816                         lpfc_mbx_unreg_vpi(vport);
10817                         spin_lock_irq(shost->host_lock);
10818                         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
10819                         spin_unlock_irq(shost->host_lock);
10820                         if (mb->mbxStatus == MBX_NOT_FINISHED)
10821                                 break;
10822                         if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
10823                             !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) {
10824                                 if (phba->sli_rev == LPFC_SLI_REV4)
10825                                         lpfc_issue_init_vfi(vport);
10826                                 else
10827                                         lpfc_initial_flogi(vport);
10828                         } else {
10829                                 lpfc_initial_fdisc(vport);
10830                         }
10831                         break;
10832                 }
10833         } else {
10834                 spin_lock_irq(shost->host_lock);
10835                 vport->vpi_state |= LPFC_VPI_REGISTERED;
10836                 spin_unlock_irq(shost->host_lock);
10837                 if (vport == phba->pport) {
10838                         if (phba->sli_rev < LPFC_SLI_REV4)
10839                                 lpfc_issue_fabric_reglogin(vport);
10840                         else {
10841                                 /*
10842                                  * If the physical port is instantiated using
10843                                  * FDISC, do not start vport discovery.
10844                                  */
10845                                 if (vport->port_state != LPFC_FDISC)
10846                                         lpfc_start_fdiscs(phba);
10847                                 lpfc_do_scr_ns_plogi(phba, vport);
10848                         }
10849                 } else {
10850                         lpfc_do_scr_ns_plogi(phba, vport);
10851                 }
10852         }
10853 mbox_err_exit:
10854         /* Now, we decrement the ndlp reference count held for this
10855          * callback function
10856          */
10857         lpfc_nlp_put(ndlp);
10858
10859         mempool_free(pmb, phba->mbox_mem_pool);
10860         return;
10861 }
10862
10863 /**
10864  * lpfc_register_new_vport - Register a new vport with a HBA
10865  * @phba: pointer to lpfc hba data structure.
10866  * @vport: pointer to a host virtual N_Port data structure.
10867  * @ndlp: pointer to a node-list data structure.
10868  *
10869  * This routine registers the @vport as a new virtual port with a HBA.
10870  * It is done through a registering vpi mailbox command.
10871  **/
10872 void
10873 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
10874                         struct lpfc_nodelist *ndlp)
10875 {
10876         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
10877         LPFC_MBOXQ_t *mbox;
10878
10879         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10880         if (mbox) {
10881                 lpfc_reg_vpi(vport, mbox);
10882                 mbox->vport = vport;
10883                 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
10884                 if (!mbox->ctx_ndlp) {
10885                         mempool_free(mbox, phba->mbox_mem_pool);
10886                         goto mbox_err_exit;
10887                 }
10888
10889                 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
10890                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
10891                     == MBX_NOT_FINISHED) {
10892                         /* mailbox command not success, decrement ndlp
10893                          * reference count for this command
10894                          */
10895                         lpfc_nlp_put(ndlp);
10896                         mempool_free(mbox, phba->mbox_mem_pool);
10897
10898                         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10899                                 "0253 Register VPI: Can't send mbox\n");
10900                         goto mbox_err_exit;
10901                 }
10902         } else {
10903                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10904                                  "0254 Register VPI: no memory\n");
10905                 goto mbox_err_exit;
10906         }
10907         return;
10908
10909 mbox_err_exit:
10910         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10911         spin_lock_irq(shost->host_lock);
10912         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
10913         spin_unlock_irq(shost->host_lock);
10914         return;
10915 }
10916
10917 /**
10918  * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
10919  * @phba: pointer to lpfc hba data structure.
10920  *
10921  * This routine cancels the retry delay timers to all the vports.
10922  **/
10923 void
10924 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
10925 {
10926         struct lpfc_vport **vports;
10927         struct lpfc_nodelist *ndlp;
10928         uint32_t link_state;
10929         int i;
10930
10931         /* Treat this failure as linkdown for all vports */
10932         link_state = phba->link_state;
10933         lpfc_linkdown(phba);
10934         phba->link_state = link_state;
10935
10936         vports = lpfc_create_vport_work_array(phba);
10937
10938         if (vports) {
10939                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
10940                         ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
10941                         if (ndlp)
10942                                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
10943                         lpfc_els_flush_cmd(vports[i]);
10944                 }
10945                 lpfc_destroy_vport_work_array(phba, vports);
10946         }
10947 }
10948
10949 /**
10950  * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
10951  * @phba: pointer to lpfc hba data structure.
10952  *
10953  * This routine abort all pending discovery commands and
10954  * start a timer to retry FLOGI for the physical port
10955  * discovery.
10956  **/
10957 void
10958 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
10959 {
10960         struct lpfc_nodelist *ndlp;
10961
10962         /* Cancel the all vports retry delay retry timers */
10963         lpfc_cancel_all_vport_retry_delay_timer(phba);
10964
10965         /* If fabric require FLOGI, then re-instantiate physical login */
10966         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
10967         if (!ndlp)
10968                 return;
10969
10970         mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
10971         spin_lock_irq(&ndlp->lock);
10972         ndlp->nlp_flag |= NLP_DELAY_TMO;
10973         spin_unlock_irq(&ndlp->lock);
10974         ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
10975         phba->pport->port_state = LPFC_FLOGI;
10976         return;
10977 }
10978
10979 /**
10980  * lpfc_fabric_login_reqd - Check if FLOGI required.
10981  * @phba: pointer to lpfc hba data structure.
10982  * @cmdiocb: pointer to FDISC command iocb.
10983  * @rspiocb: pointer to FDISC response iocb.
10984  *
10985  * This routine checks if a FLOGI is reguired for FDISC
10986  * to succeed.
10987  **/
10988 static int
10989 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
10990                 struct lpfc_iocbq *cmdiocb,
10991                 struct lpfc_iocbq *rspiocb)
10992 {
10993         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
10994         u32 ulp_word4 = get_job_word4(phba, rspiocb);
10995
10996         if (ulp_status != IOSTAT_FABRIC_RJT ||
10997             ulp_word4 != RJT_LOGIN_REQUIRED)
10998                 return 0;
10999         else
11000                 return 1;
11001 }
11002
11003 /**
11004  * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
11005  * @phba: pointer to lpfc hba data structure.
11006  * @cmdiocb: pointer to lpfc command iocb data structure.
11007  * @rspiocb: pointer to lpfc response iocb data structure.
11008  *
11009  * This routine is the completion callback function to a Fabric Discover
11010  * (FDISC) ELS command. Since all the FDISC ELS commands are issued
11011  * single threaded, each FDISC completion callback function will reset
11012  * the discovery timer for all vports such that the timers will not get
11013  * unnecessary timeout. The function checks the FDISC IOCB status. If error
11014  * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
11015  * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
11016  * assigned to the vport has been changed with the completion of the FDISC
11017  * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
11018  * are unregistered from the HBA, and then the lpfc_register_new_vport()
11019  * routine is invoked to register new vport with the HBA. Otherwise, the
11020  * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
11021  * Server for State Change Request (SCR).
11022  **/
11023 static void
11024 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11025                     struct lpfc_iocbq *rspiocb)
11026 {
11027         struct lpfc_vport *vport = cmdiocb->vport;
11028         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
11029         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
11030         struct lpfc_nodelist *np;
11031         struct lpfc_nodelist *next_np;
11032         struct lpfc_iocbq *piocb;
11033         struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
11034         struct serv_parm *sp;
11035         uint8_t fabric_param_changed;
11036         u32 ulp_status, ulp_word4;
11037
11038         ulp_status = get_job_ulpstatus(phba, rspiocb);
11039         ulp_word4 = get_job_word4(phba, rspiocb);
11040
11041         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11042                          "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
11043                          ulp_status, ulp_word4,
11044                          vport->fc_prevDID);
11045         /* Since all FDISCs are being single threaded, we
11046          * must reset the discovery timer for ALL vports
11047          * waiting to send FDISC when one completes.
11048          */
11049         list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
11050                 lpfc_set_disctmo(piocb->vport);
11051         }
11052
11053         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11054                 "FDISC cmpl:      status:x%x/x%x prevdid:x%x",
11055                 ulp_status, ulp_word4, vport->fc_prevDID);
11056
11057         if (ulp_status) {
11058
11059                 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
11060                         lpfc_retry_pport_discovery(phba);
11061                         goto out;
11062                 }
11063
11064                 /* Check for retry */
11065                 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
11066                         goto out;
11067                 /* FDISC failed */
11068                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11069                                  "0126 FDISC failed. (x%x/x%x)\n",
11070                                  ulp_status, ulp_word4);
11071                 goto fdisc_failed;
11072         }
11073
11074         lpfc_check_nlp_post_devloss(vport, ndlp);
11075
11076         spin_lock_irq(shost->host_lock);
11077         vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
11078         vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
11079         vport->fc_flag |= FC_FABRIC;
11080         if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
11081                 vport->fc_flag |=  FC_PUBLIC_LOOP;
11082         spin_unlock_irq(shost->host_lock);
11083
11084         vport->fc_myDID = ulp_word4 & Mask_DID;
11085         lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
11086         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
11087         if (!prsp)
11088                 goto out;
11089         sp = prsp->virt + sizeof(uint32_t);
11090         fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
11091         memcpy(&vport->fabric_portname, &sp->portName,
11092                 sizeof(struct lpfc_name));
11093         memcpy(&vport->fabric_nodename, &sp->nodeName,
11094                 sizeof(struct lpfc_name));
11095         if (fabric_param_changed &&
11096                 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
11097                 /* If our NportID changed, we need to ensure all
11098                  * remaining NPORTs get unreg_login'ed so we can
11099                  * issue unreg_vpi.
11100                  */
11101                 list_for_each_entry_safe(np, next_np,
11102                         &vport->fc_nodes, nlp_listp) {
11103                         if ((np->nlp_state != NLP_STE_NPR_NODE) ||
11104                             !(np->nlp_flag & NLP_NPR_ADISC))
11105                                 continue;
11106                         spin_lock_irq(&ndlp->lock);
11107                         np->nlp_flag &= ~NLP_NPR_ADISC;
11108                         spin_unlock_irq(&ndlp->lock);
11109                         lpfc_unreg_rpi(vport, np);
11110                 }
11111                 lpfc_cleanup_pending_mbox(vport);
11112
11113                 if (phba->sli_rev == LPFC_SLI_REV4)
11114                         lpfc_sli4_unreg_all_rpis(vport);
11115
11116                 lpfc_mbx_unreg_vpi(vport);
11117                 spin_lock_irq(shost->host_lock);
11118                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
11119                 if (phba->sli_rev == LPFC_SLI_REV4)
11120                         vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
11121                 else
11122                         vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
11123                 spin_unlock_irq(shost->host_lock);
11124         } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
11125                 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
11126                 /*
11127                  * Driver needs to re-reg VPI in order for f/w
11128                  * to update the MAC address.
11129                  */
11130                 lpfc_register_new_vport(phba, vport, ndlp);
11131                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11132                 goto out;
11133         }
11134
11135         if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
11136                 lpfc_issue_init_vpi(vport);
11137         else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
11138                 lpfc_register_new_vport(phba, vport, ndlp);
11139         else
11140                 lpfc_do_scr_ns_plogi(phba, vport);
11141
11142         /* The FDISC completed successfully. Move the fabric ndlp to
11143          * UNMAPPED state and register with the transport.
11144          */
11145         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11146         goto out;
11147
11148 fdisc_failed:
11149         if (vport->fc_vport &&
11150             (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
11151                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11152         /* Cancel discovery timer */
11153         lpfc_can_disctmo(vport);
11154 out:
11155         lpfc_els_free_iocb(phba, cmdiocb);
11156         lpfc_nlp_put(ndlp);
11157 }
11158
11159 /**
11160  * lpfc_issue_els_fdisc - Issue a fdisc iocb command
11161  * @vport: pointer to a virtual N_Port data structure.
11162  * @ndlp: pointer to a node-list data structure.
11163  * @retry: number of retries to the command IOCB.
11164  *
11165  * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
11166  * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
11167  * routine to issue the IOCB, which makes sure only one outstanding fabric
11168  * IOCB will be sent off HBA at any given time.
11169  *
11170  * Note that the ndlp reference count will be incremented by 1 for holding the
11171  * ndlp and the reference to ndlp will be stored into the ndlp field of
11172  * the IOCB for the completion callback function to the FDISC ELS command.
11173  *
11174  * Return code
11175  *   0 - Successfully issued fdisc iocb command
11176  *   1 - Failed to issue fdisc iocb command
11177  **/
11178 static int
11179 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
11180                      uint8_t retry)
11181 {
11182         struct lpfc_hba *phba = vport->phba;
11183         IOCB_t *icmd;
11184         union lpfc_wqe128 *wqe = NULL;
11185         struct lpfc_iocbq *elsiocb;
11186         struct serv_parm *sp;
11187         uint8_t *pcmd;
11188         uint16_t cmdsize;
11189         int did = ndlp->nlp_DID;
11190         int rc;
11191
11192         vport->port_state = LPFC_FDISC;
11193         vport->fc_myDID = 0;
11194         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
11195         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
11196                                      ELS_CMD_FDISC);
11197         if (!elsiocb) {
11198                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11199                 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11200                                  "0255 Issue FDISC: no IOCB\n");
11201                 return 1;
11202         }
11203
11204         if (phba->sli_rev == LPFC_SLI_REV4) {
11205                 wqe = &elsiocb->wqe;
11206                 bf_set(els_req64_sid, &wqe->els_req, 0);
11207                 bf_set(els_req64_sp, &wqe->els_req, 1);
11208         } else {
11209                 icmd = &elsiocb->iocb;
11210                 icmd->un.elsreq64.myID = 0;
11211                 icmd->un.elsreq64.fl = 1;
11212                 icmd->ulpCt_h = 1;
11213                 icmd->ulpCt_l = 0;
11214         }
11215
11216         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11217         *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
11218         pcmd += sizeof(uint32_t); /* CSP Word 1 */
11219         memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
11220         sp = (struct serv_parm *) pcmd;
11221         /* Setup CSPs accordingly for Fabric */
11222         sp->cmn.e_d_tov = 0;
11223         sp->cmn.w2.r_a_tov = 0;
11224         sp->cmn.virtual_fabric_support = 0;
11225         sp->cls1.classValid = 0;
11226         sp->cls2.seqDelivery = 1;
11227         sp->cls3.seqDelivery = 1;
11228
11229         pcmd += sizeof(uint32_t); /* CSP Word 2 */
11230         pcmd += sizeof(uint32_t); /* CSP Word 3 */
11231         pcmd += sizeof(uint32_t); /* CSP Word 4 */
11232         pcmd += sizeof(uint32_t); /* Port Name */
11233         memcpy(pcmd, &vport->fc_portname, 8);
11234         pcmd += sizeof(uint32_t); /* Node Name */
11235         pcmd += sizeof(uint32_t); /* Node Name */
11236         memcpy(pcmd, &vport->fc_nodename, 8);
11237         sp->cmn.valid_vendor_ver_level = 0;
11238         memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
11239         lpfc_set_disctmo(vport);
11240
11241         phba->fc_stat.elsXmitFDISC++;
11242         elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc;
11243
11244         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11245                 "Issue FDISC:     did:x%x",
11246                 did, 0, 0);
11247
11248         elsiocb->ndlp = lpfc_nlp_get(ndlp);
11249         if (!elsiocb->ndlp)
11250                 goto err_out;
11251
11252         rc = lpfc_issue_fabric_iocb(phba, elsiocb);
11253         if (rc == IOCB_ERROR) {
11254                 lpfc_nlp_put(ndlp);
11255                 goto err_out;
11256         }
11257
11258         lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
11259         return 0;
11260
11261  err_out:
11262         lpfc_els_free_iocb(phba, elsiocb);
11263         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11264         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11265                          "0256 Issue FDISC: Cannot send IOCB\n");
11266         return 1;
11267 }
11268
11269 /**
11270  * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
11271  * @phba: pointer to lpfc hba data structure.
11272  * @cmdiocb: pointer to lpfc command iocb data structure.
11273  * @rspiocb: pointer to lpfc response iocb data structure.
11274  *
11275  * This routine is the completion callback function to the issuing of a LOGO
11276  * ELS command off a vport. It frees the command IOCB and then decrement the
11277  * reference count held on ndlp for this completion function, indicating that
11278  * the reference to the ndlp is no long needed. Note that the
11279  * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
11280  * callback function and an additional explicit ndlp reference decrementation
11281  * will trigger the actual release of the ndlp.
11282  **/
11283 static void
11284 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11285                         struct lpfc_iocbq *rspiocb)
11286 {
11287         struct lpfc_vport *vport = cmdiocb->vport;
11288         IOCB_t *irsp;
11289         struct lpfc_nodelist *ndlp;
11290         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
11291         u32 ulp_status, ulp_word4, did, tmo;
11292
11293         ndlp = cmdiocb->ndlp;
11294
11295         ulp_status = get_job_ulpstatus(phba, rspiocb);
11296         ulp_word4 = get_job_word4(phba, rspiocb);
11297
11298         if (phba->sli_rev == LPFC_SLI_REV4) {
11299                 did = get_job_els_rsp64_did(phba, cmdiocb);
11300                 tmo = get_wqe_tmo(cmdiocb);
11301         } else {
11302                 irsp = &rspiocb->iocb;
11303                 did = get_job_els_rsp64_did(phba, rspiocb);
11304                 tmo = irsp->ulpTimeout;
11305         }
11306
11307         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11308                 "LOGO npiv cmpl:  status:x%x/x%x did:x%x",
11309                 ulp_status, ulp_word4, did);
11310
11311         /* NPIV LOGO completes to NPort <nlp_DID> */
11312         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11313                          "2928 NPIV LOGO completes to NPort x%x "
11314                          "Data: x%x x%x x%x x%x x%x x%x x%x\n",
11315                          ndlp->nlp_DID, ulp_status, ulp_word4,
11316                          tmo, vport->num_disc_nodes,
11317                          kref_read(&ndlp->kref), ndlp->nlp_flag,
11318                          ndlp->fc4_xpt_flags);
11319
11320         if (ulp_status == IOSTAT_SUCCESS) {
11321                 spin_lock_irq(shost->host_lock);
11322                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
11323                 vport->fc_flag &= ~FC_FABRIC;
11324                 spin_unlock_irq(shost->host_lock);
11325                 lpfc_can_disctmo(vport);
11326         }
11327
11328         if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) {
11329                 /* Wake up lpfc_vport_delete if waiting...*/
11330                 if (ndlp->logo_waitq)
11331                         wake_up(ndlp->logo_waitq);
11332                 spin_lock_irq(&ndlp->lock);
11333                 ndlp->nlp_flag &= ~(NLP_ISSUE_LOGO | NLP_LOGO_SND);
11334                 ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
11335                 spin_unlock_irq(&ndlp->lock);
11336         }
11337
11338         /* Safe to release resources now. */
11339         lpfc_els_free_iocb(phba, cmdiocb);
11340         lpfc_nlp_put(ndlp);
11341 }
11342
11343 /**
11344  * lpfc_issue_els_npiv_logo - Issue a logo off a vport
11345  * @vport: pointer to a virtual N_Port data structure.
11346  * @ndlp: pointer to a node-list data structure.
11347  *
11348  * This routine issues a LOGO ELS command to an @ndlp off a @vport.
11349  *
11350  * Note that the ndlp reference count will be incremented by 1 for holding the
11351  * ndlp and the reference to ndlp will be stored into the ndlp field of
11352  * the IOCB for the completion callback function to the LOGO ELS command.
11353  *
11354  * Return codes
11355  *   0 - Successfully issued logo off the @vport
11356  *   1 - Failed to issue logo off the @vport
11357  **/
11358 int
11359 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
11360 {
11361         int rc = 0;
11362         struct lpfc_hba  *phba = vport->phba;
11363         struct lpfc_iocbq *elsiocb;
11364         uint8_t *pcmd;
11365         uint16_t cmdsize;
11366
11367         cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
11368         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
11369                                      ELS_CMD_LOGO);
11370         if (!elsiocb)
11371                 return 1;
11372
11373         pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11374         *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
11375         pcmd += sizeof(uint32_t);
11376
11377         /* Fill in LOGO payload */
11378         *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
11379         pcmd += sizeof(uint32_t);
11380         memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
11381
11382         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11383                 "Issue LOGO npiv  did:x%x flg:x%x",
11384                 ndlp->nlp_DID, ndlp->nlp_flag, 0);
11385
11386         elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo;
11387         spin_lock_irq(&ndlp->lock);
11388         ndlp->nlp_flag |= NLP_LOGO_SND;
11389         spin_unlock_irq(&ndlp->lock);
11390         elsiocb->ndlp = lpfc_nlp_get(ndlp);
11391         if (!elsiocb->ndlp) {
11392                 lpfc_els_free_iocb(phba, elsiocb);
11393                 goto err;
11394         }
11395
11396         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
11397         if (rc == IOCB_ERROR) {
11398                 lpfc_els_free_iocb(phba, elsiocb);
11399                 lpfc_nlp_put(ndlp);
11400                 goto err;
11401         }
11402         return 0;
11403
11404 err:
11405         spin_lock_irq(&ndlp->lock);
11406         ndlp->nlp_flag &= ~NLP_LOGO_SND;
11407         spin_unlock_irq(&ndlp->lock);
11408         return 1;
11409 }
11410
11411 /**
11412  * lpfc_fabric_block_timeout - Handler function to the fabric block timer
11413  * @t: timer context used to obtain the lpfc hba.
11414  *
11415  * This routine is invoked by the fabric iocb block timer after
11416  * timeout. It posts the fabric iocb block timeout event by setting the
11417  * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
11418  * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
11419  * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
11420  * posted event WORKER_FABRIC_BLOCK_TMO.
11421  **/
11422 void
11423 lpfc_fabric_block_timeout(struct timer_list *t)
11424 {
11425         struct lpfc_hba  *phba = from_timer(phba, t, fabric_block_timer);
11426         unsigned long iflags;
11427         uint32_t tmo_posted;
11428
11429         spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
11430         tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
11431         if (!tmo_posted)
11432                 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
11433         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
11434
11435         if (!tmo_posted)
11436                 lpfc_worker_wake_up(phba);
11437         return;
11438 }
11439
11440 /**
11441  * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
11442  * @phba: pointer to lpfc hba data structure.
11443  *
11444  * This routine issues one fabric iocb from the driver internal list to
11445  * the HBA. It first checks whether it's ready to issue one fabric iocb to
11446  * the HBA (whether there is no outstanding fabric iocb). If so, it shall
11447  * remove one pending fabric iocb from the driver internal list and invokes
11448  * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
11449  **/
11450 static void
11451 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
11452 {
11453         struct lpfc_iocbq *iocb;
11454         unsigned long iflags;
11455         int ret;
11456
11457 repeat:
11458         iocb = NULL;
11459         spin_lock_irqsave(&phba->hbalock, iflags);
11460         /* Post any pending iocb to the SLI layer */
11461         if (atomic_read(&phba->fabric_iocb_count) == 0) {
11462                 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
11463                                  list);
11464                 if (iocb)
11465                         /* Increment fabric iocb count to hold the position */
11466                         atomic_inc(&phba->fabric_iocb_count);
11467         }
11468         spin_unlock_irqrestore(&phba->hbalock, iflags);
11469         if (iocb) {
11470                 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11471                 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11472                 iocb->cmd_flag |= LPFC_IO_FABRIC;
11473
11474                 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11475                                       "Fabric sched1:   ste:x%x",
11476                                       iocb->vport->port_state, 0, 0);
11477
11478                 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11479
11480                 if (ret == IOCB_ERROR) {
11481                         iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11482                         iocb->fabric_cmd_cmpl = NULL;
11483                         iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11484                         set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT);
11485                         iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
11486                         iocb->cmd_cmpl(phba, iocb, iocb);
11487
11488                         atomic_dec(&phba->fabric_iocb_count);
11489                         goto repeat;
11490                 }
11491         }
11492 }
11493
11494 /**
11495  * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
11496  * @phba: pointer to lpfc hba data structure.
11497  *
11498  * This routine unblocks the  issuing fabric iocb command. The function
11499  * will clear the fabric iocb block bit and then invoke the routine
11500  * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
11501  * from the driver internal fabric iocb list.
11502  **/
11503 void
11504 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
11505 {
11506         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11507
11508         lpfc_resume_fabric_iocbs(phba);
11509         return;
11510 }
11511
11512 /**
11513  * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
11514  * @phba: pointer to lpfc hba data structure.
11515  *
11516  * This routine blocks the issuing fabric iocb for a specified amount of
11517  * time (currently 100 ms). This is done by set the fabric iocb block bit
11518  * and set up a timeout timer for 100ms. When the block bit is set, no more
11519  * fabric iocb will be issued out of the HBA.
11520  **/
11521 static void
11522 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
11523 {
11524         int blocked;
11525
11526         blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11527         /* Start a timer to unblock fabric iocbs after 100ms */
11528         if (!blocked)
11529                 mod_timer(&phba->fabric_block_timer,
11530                           jiffies + msecs_to_jiffies(100));
11531
11532         return;
11533 }
11534
11535 /**
11536  * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
11537  * @phba: pointer to lpfc hba data structure.
11538  * @cmdiocb: pointer to lpfc command iocb data structure.
11539  * @rspiocb: pointer to lpfc response iocb data structure.
11540  *
11541  * This routine is the callback function that is put to the fabric iocb's
11542  * callback function pointer (iocb->cmd_cmpl). The original iocb's callback
11543  * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback
11544  * function first restores and invokes the original iocb's callback function
11545  * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
11546  * fabric bound iocb from the driver internal fabric iocb list onto the wire.
11547  **/
11548 static void
11549 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11550                       struct lpfc_iocbq *rspiocb)
11551 {
11552         struct ls_rjt stat;
11553         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11554         u32 ulp_word4 = get_job_word4(phba, rspiocb);
11555
11556         WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
11557
11558         switch (ulp_status) {
11559                 case IOSTAT_NPORT_RJT:
11560                 case IOSTAT_FABRIC_RJT:
11561                         if (ulp_word4 & RJT_UNAVAIL_TEMP)
11562                                 lpfc_block_fabric_iocbs(phba);
11563                         break;
11564
11565                 case IOSTAT_NPORT_BSY:
11566                 case IOSTAT_FABRIC_BSY:
11567                         lpfc_block_fabric_iocbs(phba);
11568                         break;
11569
11570                 case IOSTAT_LS_RJT:
11571                         stat.un.ls_rjt_error_be =
11572                                 cpu_to_be32(ulp_word4);
11573                         if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
11574                                 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
11575                                 lpfc_block_fabric_iocbs(phba);
11576                         break;
11577         }
11578
11579         BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
11580
11581         cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl;
11582         cmdiocb->fabric_cmd_cmpl = NULL;
11583         cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
11584         cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb);
11585
11586         atomic_dec(&phba->fabric_iocb_count);
11587         if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
11588                 /* Post any pending iocbs to HBA */
11589                 lpfc_resume_fabric_iocbs(phba);
11590         }
11591 }
11592
11593 /**
11594  * lpfc_issue_fabric_iocb - Issue a fabric iocb command
11595  * @phba: pointer to lpfc hba data structure.
11596  * @iocb: pointer to lpfc command iocb data structure.
11597  *
11598  * This routine is used as the top-level API for issuing a fabric iocb command
11599  * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
11600  * function makes sure that only one fabric bound iocb will be outstanding at
11601  * any given time. As such, this function will first check to see whether there
11602  * is already an outstanding fabric iocb on the wire. If so, it will put the
11603  * newly issued iocb onto the driver internal fabric iocb list, waiting to be
11604  * issued later. Otherwise, it will issue the iocb on the wire and update the
11605  * fabric iocb count it indicate that there is one fabric iocb on the wire.
11606  *
11607  * Note, this implementation has a potential sending out fabric IOCBs out of
11608  * order. The problem is caused by the construction of the "ready" boolen does
11609  * not include the condition that the internal fabric IOCB list is empty. As
11610  * such, it is possible a fabric IOCB issued by this routine might be "jump"
11611  * ahead of the fabric IOCBs in the internal list.
11612  *
11613  * Return code
11614  *   IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
11615  *   IOCB_ERROR - failed to issue fabric iocb
11616  **/
11617 static int
11618 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
11619 {
11620         unsigned long iflags;
11621         int ready;
11622         int ret;
11623
11624         BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
11625
11626         spin_lock_irqsave(&phba->hbalock, iflags);
11627         ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
11628                 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11629
11630         if (ready)
11631                 /* Increment fabric iocb count to hold the position */
11632                 atomic_inc(&phba->fabric_iocb_count);
11633         spin_unlock_irqrestore(&phba->hbalock, iflags);
11634         if (ready) {
11635                 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11636                 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11637                 iocb->cmd_flag |= LPFC_IO_FABRIC;
11638
11639                 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11640                                       "Fabric sched2:   ste:x%x",
11641                                       iocb->vport->port_state, 0, 0);
11642
11643                 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11644
11645                 if (ret == IOCB_ERROR) {
11646                         iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11647                         iocb->fabric_cmd_cmpl = NULL;
11648                         iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11649                         atomic_dec(&phba->fabric_iocb_count);
11650                 }
11651         } else {
11652                 spin_lock_irqsave(&phba->hbalock, iflags);
11653                 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
11654                 spin_unlock_irqrestore(&phba->hbalock, iflags);
11655                 ret = IOCB_SUCCESS;
11656         }
11657         return ret;
11658 }
11659
11660 /**
11661  * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
11662  * @vport: pointer to a virtual N_Port data structure.
11663  *
11664  * This routine aborts all the IOCBs associated with a @vport from the
11665  * driver internal fabric IOCB list. The list contains fabric IOCBs to be
11666  * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
11667  * list, removes each IOCB associated with the @vport off the list, set the
11668  * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
11669  * associated with the IOCB.
11670  **/
11671 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
11672 {
11673         LIST_HEAD(completions);
11674         struct lpfc_hba  *phba = vport->phba;
11675         struct lpfc_iocbq *tmp_iocb, *piocb;
11676
11677         spin_lock_irq(&phba->hbalock);
11678         list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
11679                                  list) {
11680
11681                 if (piocb->vport != vport)
11682                         continue;
11683
11684                 list_move_tail(&piocb->list, &completions);
11685         }
11686         spin_unlock_irq(&phba->hbalock);
11687
11688         /* Cancel all the IOCBs from the completions list */
11689         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11690                               IOERR_SLI_ABORTED);
11691 }
11692
11693 /**
11694  * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
11695  * @ndlp: pointer to a node-list data structure.
11696  *
11697  * This routine aborts all the IOCBs associated with an @ndlp from the
11698  * driver internal fabric IOCB list. The list contains fabric IOCBs to be
11699  * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
11700  * list, removes each IOCB associated with the @ndlp off the list, set the
11701  * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
11702  * associated with the IOCB.
11703  **/
11704 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
11705 {
11706         LIST_HEAD(completions);
11707         struct lpfc_hba  *phba = ndlp->phba;
11708         struct lpfc_iocbq *tmp_iocb, *piocb;
11709         struct lpfc_sli_ring *pring;
11710
11711         pring = lpfc_phba_elsring(phba);
11712
11713         if (unlikely(!pring))
11714                 return;
11715
11716         spin_lock_irq(&phba->hbalock);
11717         list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
11718                                  list) {
11719                 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
11720
11721                         list_move_tail(&piocb->list, &completions);
11722                 }
11723         }
11724         spin_unlock_irq(&phba->hbalock);
11725
11726         /* Cancel all the IOCBs from the completions list */
11727         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11728                               IOERR_SLI_ABORTED);
11729 }
11730
11731 /**
11732  * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
11733  * @phba: pointer to lpfc hba data structure.
11734  *
11735  * This routine aborts all the IOCBs currently on the driver internal
11736  * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
11737  * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
11738  * list, removes IOCBs off the list, set the status field to
11739  * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
11740  * the IOCB.
11741  **/
11742 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
11743 {
11744         LIST_HEAD(completions);
11745
11746         spin_lock_irq(&phba->hbalock);
11747         list_splice_init(&phba->fabric_iocb_list, &completions);
11748         spin_unlock_irq(&phba->hbalock);
11749
11750         /* Cancel all the IOCBs from the completions list */
11751         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11752                               IOERR_SLI_ABORTED);
11753 }
11754
11755 /**
11756  * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
11757  * @vport: pointer to lpfc vport data structure.
11758  *
11759  * This routine is invoked by the vport cleanup for deletions and the cleanup
11760  * for an ndlp on removal.
11761  **/
11762 void
11763 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
11764 {
11765         struct lpfc_hba *phba = vport->phba;
11766         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
11767         struct lpfc_nodelist *ndlp = NULL;
11768         unsigned long iflag = 0;
11769
11770         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
11771         list_for_each_entry_safe(sglq_entry, sglq_next,
11772                         &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
11773                 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
11774                         lpfc_nlp_put(sglq_entry->ndlp);
11775                         ndlp = sglq_entry->ndlp;
11776                         sglq_entry->ndlp = NULL;
11777
11778                         /* If the xri on the abts_els_sgl list is for the Fport
11779                          * node and the vport is unloading, the xri aborted wcqe
11780                          * likely isn't coming back.  Just release the sgl.
11781                          */
11782                         if ((vport->load_flag & FC_UNLOADING) &&
11783                             ndlp->nlp_DID == Fabric_DID) {
11784                                 list_del(&sglq_entry->list);
11785                                 sglq_entry->state = SGL_FREED;
11786                                 list_add_tail(&sglq_entry->list,
11787                                         &phba->sli4_hba.lpfc_els_sgl_list);
11788                         }
11789                 }
11790         }
11791         spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
11792         return;
11793 }
11794
11795 /**
11796  * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
11797  * @phba: pointer to lpfc hba data structure.
11798  * @axri: pointer to the els xri abort wcqe structure.
11799  *
11800  * This routine is invoked by the worker thread to process a SLI4 slow-path
11801  * ELS aborted xri.
11802  **/
11803 void
11804 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
11805                           struct sli4_wcqe_xri_aborted *axri)
11806 {
11807         uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
11808         uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
11809         uint16_t lxri = 0;
11810
11811         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
11812         unsigned long iflag = 0;
11813         struct lpfc_nodelist *ndlp;
11814         struct lpfc_sli_ring *pring;
11815
11816         pring = lpfc_phba_elsring(phba);
11817
11818         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
11819         list_for_each_entry_safe(sglq_entry, sglq_next,
11820                         &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
11821                 if (sglq_entry->sli4_xritag == xri) {
11822                         list_del(&sglq_entry->list);
11823                         ndlp = sglq_entry->ndlp;
11824                         sglq_entry->ndlp = NULL;
11825                         list_add_tail(&sglq_entry->list,
11826                                 &phba->sli4_hba.lpfc_els_sgl_list);
11827                         sglq_entry->state = SGL_FREED;
11828                         spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
11829                                                iflag);
11830
11831                         if (ndlp) {
11832                                 lpfc_set_rrq_active(phba, ndlp,
11833                                         sglq_entry->sli4_lxritag,
11834                                         rxid, 1);
11835                                 lpfc_nlp_put(ndlp);
11836                         }
11837
11838                         /* Check if TXQ queue needs to be serviced */
11839                         if (pring && !list_empty(&pring->txq))
11840                                 lpfc_worker_wake_up(phba);
11841                         return;
11842                 }
11843         }
11844         spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
11845         lxri = lpfc_sli4_xri_inrange(phba, xri);
11846         if (lxri == NO_XRI)
11847                 return;
11848
11849         spin_lock_irqsave(&phba->hbalock, iflag);
11850         sglq_entry = __lpfc_get_active_sglq(phba, lxri);
11851         if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
11852                 spin_unlock_irqrestore(&phba->hbalock, iflag);
11853                 return;
11854         }
11855         sglq_entry->state = SGL_XRI_ABORTED;
11856         spin_unlock_irqrestore(&phba->hbalock, iflag);
11857         return;
11858 }
11859
11860 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
11861  * @vport: pointer to virtual port object.
11862  * @ndlp: nodelist pointer for the impacted node.
11863  *
11864  * The driver calls this routine in response to an SLI4 XRI ABORT CQE
11865  * or an SLI3 ASYNC_STATUS_CN event from the port.  For either event,
11866  * the driver is required to send a LOGO to the remote node before it
11867  * attempts to recover its login to the remote node.
11868  */
11869 void
11870 lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
11871                            struct lpfc_nodelist *ndlp)
11872 {
11873         struct Scsi_Host *shost;
11874         struct lpfc_hba *phba;
11875         unsigned long flags = 0;
11876
11877         shost = lpfc_shost_from_vport(vport);
11878         phba = vport->phba;
11879         if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
11880                 lpfc_printf_log(phba, KERN_INFO,
11881                                 LOG_SLI, "3093 No rport recovery needed. "
11882                                 "rport in state 0x%x\n", ndlp->nlp_state);
11883                 return;
11884         }
11885         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11886                         "3094 Start rport recovery on shost id 0x%x "
11887                         "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
11888                         "flags 0x%x\n",
11889                         shost->host_no, ndlp->nlp_DID,
11890                         vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
11891                         ndlp->nlp_flag);
11892         /*
11893          * The rport is not responding.  Remove the FCP-2 flag to prevent
11894          * an ADISC in the follow-up recovery code.
11895          */
11896         spin_lock_irqsave(&ndlp->lock, flags);
11897         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
11898         ndlp->nlp_flag |= NLP_ISSUE_LOGO;
11899         spin_unlock_irqrestore(&ndlp->lock, flags);
11900         lpfc_unreg_rpi(vport, ndlp);
11901 }
11902
11903 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport)
11904 {
11905         bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE);
11906 }
11907
11908 static void
11909 lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max)
11910 {
11911         u32 i;
11912
11913         if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE))
11914                 return;
11915
11916         for (i = min; i <= max; i++)
11917                 set_bit(i, vport->vmid_priority_range);
11918 }
11919
11920 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid)
11921 {
11922         set_bit(ctcl_vmid, vport->vmid_priority_range);
11923 }
11924
11925 u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport)
11926 {
11927         u32 i;
11928
11929         i = find_first_bit(vport->vmid_priority_range,
11930                            LPFC_VMID_MAX_PRIORITY_RANGE);
11931
11932         if (i == LPFC_VMID_MAX_PRIORITY_RANGE)
11933                 return 0;
11934
11935         clear_bit(i, vport->vmid_priority_range);
11936         return i;
11937 }
11938
11939 #define MAX_PRIORITY_DESC       255
11940
11941 static void
11942 lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11943                    struct lpfc_iocbq *rspiocb)
11944 {
11945         struct lpfc_vport *vport = cmdiocb->vport;
11946         struct priority_range_desc *desc;
11947         struct lpfc_dmabuf *prsp = NULL;
11948         struct lpfc_vmid_priority_range *vmid_range = NULL;
11949         u32 *data;
11950         struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf;
11951         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11952         u32 ulp_word4 = get_job_word4(phba, rspiocb);
11953         u8 *pcmd, max_desc;
11954         u32 len, i;
11955         struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
11956
11957         prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
11958         if (!prsp)
11959                 goto out;
11960
11961         pcmd = prsp->virt;
11962         data = (u32 *)pcmd;
11963         if (data[0] == ELS_CMD_LS_RJT) {
11964                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
11965                                  "3277 QFPA LS_RJT x%x  x%x\n",
11966                                  data[0], data[1]);
11967                 goto out;
11968         }
11969         if (ulp_status) {
11970                 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
11971                                  "6529 QFPA failed with status x%x  x%x\n",
11972                                  ulp_status, ulp_word4);
11973                 goto out;
11974         }
11975
11976         if (!vport->qfpa_res) {
11977                 max_desc = FCELSSIZE / sizeof(*vport->qfpa_res);
11978                 vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res),
11979                                           GFP_KERNEL);
11980                 if (!vport->qfpa_res)
11981                         goto out;
11982         }
11983
11984         len = *((u32 *)(pcmd + 4));
11985         len = be32_to_cpu(len);
11986         memcpy(vport->qfpa_res, pcmd, len + 8);
11987         len = len / LPFC_PRIORITY_RANGE_DESC_SIZE;
11988
11989         desc = (struct priority_range_desc *)(pcmd + 8);
11990         vmid_range = vport->vmid_priority.vmid_range;
11991         if (!vmid_range) {
11992                 vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range),
11993                                      GFP_KERNEL);
11994                 if (!vmid_range) {
11995                         kfree(vport->qfpa_res);
11996                         goto out;
11997                 }
11998                 vport->vmid_priority.vmid_range = vmid_range;
11999         }
12000         vport->vmid_priority.num_descriptors = len;
12001
12002         for (i = 0; i < len; i++, vmid_range++, desc++) {
12003                 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12004                                  "6539 vmid values low=%d, high=%d, qos=%d, "
12005                                  "local ve id=%d\n", desc->lo_range,
12006                                  desc->hi_range, desc->qos_priority,
12007                                  desc->local_ve_id);
12008
12009                 vmid_range->low = desc->lo_range << 1;
12010                 if (desc->local_ve_id == QFPA_ODD_ONLY)
12011                         vmid_range->low++;
12012                 if (desc->qos_priority)
12013                         vport->vmid_flag |= LPFC_VMID_QOS_ENABLED;
12014                 vmid_range->qos = desc->qos_priority;
12015
12016                 vmid_range->high = desc->hi_range << 1;
12017                 if ((desc->local_ve_id == QFPA_ODD_ONLY) ||
12018                     (desc->local_ve_id == QFPA_EVEN_ODD))
12019                         vmid_range->high++;
12020         }
12021         lpfc_init_cs_ctl_bitmap(vport);
12022         for (i = 0; i < vport->vmid_priority.num_descriptors; i++) {
12023                 lpfc_vmid_set_cs_ctl_range(vport,
12024                                 vport->vmid_priority.vmid_range[i].low,
12025                                 vport->vmid_priority.vmid_range[i].high);
12026         }
12027
12028         vport->vmid_flag |= LPFC_VMID_QFPA_CMPL;
12029  out:
12030         lpfc_els_free_iocb(phba, cmdiocb);
12031         lpfc_nlp_put(ndlp);
12032 }
12033
12034 int lpfc_issue_els_qfpa(struct lpfc_vport *vport)
12035 {
12036         struct lpfc_hba *phba = vport->phba;
12037         struct lpfc_nodelist *ndlp;
12038         struct lpfc_iocbq *elsiocb;
12039         u8 *pcmd;
12040         int ret;
12041
12042         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
12043         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12044                 return -ENXIO;
12045
12046         elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp,
12047                                      ndlp->nlp_DID, ELS_CMD_QFPA);
12048         if (!elsiocb)
12049                 return -ENOMEM;
12050
12051         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12052
12053         *((u32 *)(pcmd)) = ELS_CMD_QFPA;
12054         pcmd += 4;
12055
12056         elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa;
12057
12058         elsiocb->ndlp = lpfc_nlp_get(ndlp);
12059         if (!elsiocb->ndlp) {
12060                 lpfc_els_free_iocb(vport->phba, elsiocb);
12061                 return -ENXIO;
12062         }
12063
12064         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2);
12065         if (ret != IOCB_SUCCESS) {
12066                 lpfc_els_free_iocb(phba, elsiocb);
12067                 lpfc_nlp_put(ndlp);
12068                 return -EIO;
12069         }
12070         vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED;
12071         return 0;
12072 }
12073
12074 int
12075 lpfc_vmid_uvem(struct lpfc_vport *vport,
12076                struct lpfc_vmid *vmid, bool instantiated)
12077 {
12078         struct lpfc_vem_id_desc *vem_id_desc;
12079         struct lpfc_nodelist *ndlp;
12080         struct lpfc_iocbq *elsiocb;
12081         struct instantiated_ve_desc *inst_desc;
12082         struct lpfc_vmid_context *vmid_context;
12083         u8 *pcmd;
12084         u32 *len;
12085         int ret = 0;
12086
12087         ndlp = lpfc_findnode_did(vport, Fabric_DID);
12088         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12089                 return -ENXIO;
12090
12091         vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL);
12092         if (!vmid_context)
12093                 return -ENOMEM;
12094         elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2,
12095                                      ndlp, Fabric_DID, ELS_CMD_UVEM);
12096         if (!elsiocb)
12097                 goto out;
12098
12099         lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12100                          "3427 Host vmid %s %d\n",
12101                          vmid->host_vmid, instantiated);
12102         vmid_context->vmp = vmid;
12103         vmid_context->nlp = ndlp;
12104         vmid_context->instantiated = instantiated;
12105         elsiocb->vmid_tag.vmid_context = vmid_context;
12106         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12107
12108         if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid))
12109                 memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
12110                        LPFC_COMPRESS_VMID_SIZE);
12111
12112         *((u32 *)(pcmd)) = ELS_CMD_UVEM;
12113         len = (u32 *)(pcmd + 4);
12114         *len = cpu_to_be32(LPFC_UVEM_SIZE - 8);
12115
12116         vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8);
12117         vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG);
12118         vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE);
12119         memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid,
12120                LPFC_COMPRESS_VMID_SIZE);
12121
12122         inst_desc = (struct instantiated_ve_desc *)(pcmd + 32);
12123         inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12124         inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE);
12125         memcpy(inst_desc->global_vem_id, vmid->host_vmid,
12126                LPFC_COMPRESS_VMID_SIZE);
12127
12128         bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID);
12129         bf_set(lpfc_instantiated_local_id, inst_desc,
12130                vmid->un.cs_ctl_vmid);
12131         if (instantiated) {
12132                 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12133         } else {
12134                 inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG);
12135                 lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid);
12136         }
12137         inst_desc->word6 = cpu_to_be32(inst_desc->word6);
12138
12139         elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem;
12140
12141         elsiocb->ndlp = lpfc_nlp_get(ndlp);
12142         if (!elsiocb->ndlp) {
12143                 lpfc_els_free_iocb(vport->phba, elsiocb);
12144                 goto out;
12145         }
12146
12147         ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0);
12148         if (ret != IOCB_SUCCESS) {
12149                 lpfc_els_free_iocb(vport->phba, elsiocb);
12150                 lpfc_nlp_put(ndlp);
12151                 goto out;
12152         }
12153
12154         return 0;
12155  out:
12156         kfree(vmid_context);
12157         return -EIO;
12158 }
12159
12160 static void
12161 lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb,
12162                    struct lpfc_iocbq *rspiocb)
12163 {
12164         struct lpfc_vport *vport = icmdiocb->vport;
12165         struct lpfc_dmabuf *prsp = NULL;
12166         struct lpfc_vmid_context *vmid_context =
12167             icmdiocb->vmid_tag.vmid_context;
12168         struct lpfc_nodelist *ndlp = icmdiocb->ndlp;
12169         u8 *pcmd;
12170         u32 *data;
12171         u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12172         u32 ulp_word4 = get_job_word4(phba, rspiocb);
12173         struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf;
12174         struct lpfc_vmid *vmid;
12175
12176         vmid = vmid_context->vmp;
12177         if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12178                 ndlp = NULL;
12179
12180         prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12181         if (!prsp)
12182                 goto out;
12183         pcmd = prsp->virt;
12184         data = (u32 *)pcmd;
12185         if (data[0] == ELS_CMD_LS_RJT) {
12186                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12187                                  "4532 UVEM LS_RJT %x %x\n", data[0], data[1]);
12188                 goto out;
12189         }
12190         if (ulp_status) {
12191                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12192                                  "4533 UVEM error status %x: %x\n",
12193                                  ulp_status, ulp_word4);
12194                 goto out;
12195         }
12196         spin_lock(&phba->hbalock);
12197         /* Set IN USE flag */
12198         vport->vmid_flag |= LPFC_VMID_IN_USE;
12199         phba->pport->vmid_flag |= LPFC_VMID_IN_USE;
12200         spin_unlock(&phba->hbalock);
12201
12202         if (vmid_context->instantiated) {
12203                 write_lock(&vport->vmid_lock);
12204                 vmid->flag |= LPFC_VMID_REGISTERED;
12205                 vmid->flag &= ~LPFC_VMID_REQ_REGISTER;
12206                 write_unlock(&vport->vmid_lock);
12207         }
12208
12209  out:
12210         kfree(vmid_context);
12211         lpfc_els_free_iocb(phba, icmdiocb);
12212         lpfc_nlp_put(ndlp);
12213 }