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linux/drivers/scsi/lpfc/lpfc_els.c
Sudip Mukherjee e795042365 lpfc: fix memory leak and NULL dereference 
kmalloc() can return NULL and without checking we were dereferencing it.
Moreover if kmalloc succeeds but the function fails in other parts then
we were returning the error code but we missed freeing lcb_context.
While at it fixed one related checkpatch warning.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Reviewed-by: James Smart <james.smart@avagotech.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-11-09 17:08:03 -08:00

8912 lines
280 KiB
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2015 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of version 2 of the GNU General *
* Public License as published by the Free Software Foundation. *
* This program is distributed in the hope that it will be useful. *
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
* TO BE LEGALLY INVALID. See the GNU General Public License for *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
*******************************************************************/
/* See Fibre Channel protocol T11 FC-LS for details */
#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.h"
static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
struct lpfc_iocbq *);
static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
struct lpfc_iocbq *);
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp, uint8_t retry);
static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
struct lpfc_iocbq *iocb);
static int lpfc_max_els_tries = 3;
/**
* lpfc_els_chk_latt - Check host link attention event for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine checks whether there is an outstanding host link
* attention event during the discovery process with the @vport. It is done
* by reading the HBA's Host Attention (HA) register. If there is any host
* link attention events during this @vport's discovery process, the @vport
* shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
* be issued if the link state is not already in host link cleared state,
* and a return code shall indicate whether the host link attention event
* had happened.
*
* Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
* state in LPFC_VPORT_READY, the request for checking host link attention
* event will be ignored and a return code shall indicate no host link
* attention event had happened.
*
* Return codes
* 0 - no host link attention event happened
* 1 - host link attention event happened
**/
int
lpfc_els_chk_latt(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
uint32_t ha_copy;
if (vport->port_state >= LPFC_VPORT_READY ||
phba->link_state == LPFC_LINK_DOWN ||
phba->sli_rev > LPFC_SLI_REV3)
return 0;
/* Read the HBA Host Attention Register */
if (lpfc_readl(phba->HAregaddr, &ha_copy))
return 1;
if (!(ha_copy & HA_LATT))
return 0;
/* Pending Link Event during Discovery */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0237 Pending Link Event during "
"Discovery: State x%x\n",
phba->pport->port_state);
/* CLEAR_LA should re-enable link attention events and
* we should then immediately take a LATT event. The
* LATT processing should call lpfc_linkdown() which
* will cleanup any left over in-progress discovery
* events.
*/
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_ABORT_DISCOVERY;
spin_unlock_irq(shost->host_lock);
if (phba->link_state != LPFC_CLEAR_LA)
lpfc_issue_clear_la(phba, vport);
return 1;
}
/**
* lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
* @vport: pointer to a host virtual N_Port data structure.
* @expectRsp: flag indicating whether response is expected.
* @cmdSize: size of the ELS command.
* @retry: number of retries to the command IOCB when it fails.
* @ndlp: pointer to a node-list data structure.
* @did: destination identifier.
* @elscmd: the ELS command code.
*
* This routine is used for allocating a lpfc-IOCB data structure from
* the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
* passed into the routine for discovery state machine to issue an Extended
* Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
* and preparation routine that is used by all the discovery state machine
* routines and the ELS command-specific fields will be later set up by
* the individual discovery machine routines after calling this routine
* allocating and preparing a generic IOCB data structure. It fills in the
* Buffer Descriptor Entries (BDEs), allocates buffers for both command
* payload and response payload (if expected). The reference count on the
* ndlp is incremented by 1 and the reference to the ndlp is put into
* context1 of the IOCB data structure for this IOCB to hold the ndlp
* reference for the command's callback function to access later.
*
* Return code
* Pointer to the newly allocated/prepared els iocb data structure
* NULL - when els iocb data structure allocation/preparation failed
**/
struct lpfc_iocbq *
lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
uint16_t cmdSize, uint8_t retry,
struct lpfc_nodelist *ndlp, uint32_t did,
uint32_t elscmd)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
struct ulp_bde64 *bpl;
IOCB_t *icmd;
if (!lpfc_is_link_up(phba))
return NULL;
/* Allocate buffer for command iocb */
elsiocb = lpfc_sli_get_iocbq(phba);
if (elsiocb == NULL)
return NULL;
/*
* If this command is for fabric controller and HBA running
* in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
*/
if ((did == Fabric_DID) &&
(phba->hba_flag & HBA_FIP_SUPPORT) &&
((elscmd == ELS_CMD_FLOGI) ||
(elscmd == ELS_CMD_FDISC) ||
(elscmd == ELS_CMD_LOGO)))
switch (elscmd) {
case ELS_CMD_FLOGI:
elsiocb->iocb_flag |=
((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
& LPFC_FIP_ELS_ID_MASK);
break;
case ELS_CMD_FDISC:
elsiocb->iocb_flag |=
((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
& LPFC_FIP_ELS_ID_MASK);
break;
case ELS_CMD_LOGO:
elsiocb->iocb_flag |=
((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
& LPFC_FIP_ELS_ID_MASK);
break;
}
else
elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
icmd = &elsiocb->iocb;
/* fill in BDEs for command */
/* Allocate buffer for command payload */
pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (pcmd)
pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
if (!pcmd || !pcmd->virt)
goto els_iocb_free_pcmb_exit;
INIT_LIST_HEAD(&pcmd->list);
/* Allocate buffer for response payload */
if (expectRsp) {
prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (prsp)
prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&prsp->phys);
if (!prsp || !prsp->virt)
goto els_iocb_free_prsp_exit;
INIT_LIST_HEAD(&prsp->list);
} else
prsp = NULL;
/* Allocate buffer for Buffer ptr list */
pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (pbuflist)
pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&pbuflist->phys);
if (!pbuflist || !pbuflist->virt)
goto els_iocb_free_pbuf_exit;
INIT_LIST_HEAD(&pbuflist->list);
if (expectRsp) {
icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
icmd->un.elsreq64.remoteID = did; /* DID */
icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
if (elscmd == ELS_CMD_FLOGI)
icmd->ulpTimeout = FF_DEF_RATOV * 2;
else
icmd->ulpTimeout = phba->fc_ratov * 2;
} else {
icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
icmd->un.xseq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
icmd->un.xseq64.bdl.bdeSize = sizeof(struct ulp_bde64);
icmd->un.xseq64.xmit_els_remoteID = did; /* DID */
icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
}
icmd->ulpBdeCount = 1;
icmd->ulpLe = 1;
icmd->ulpClass = CLASS3;
/*
* If we have NPIV enabled, we want to send ELS traffic by VPI.
* For SLI4, since the driver controls VPIs we also want to include
* all ELS pt2pt protocol traffic as well.
*/
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) ||
((phba->sli_rev == LPFC_SLI_REV4) &&
(vport->fc_flag & FC_PT2PT))) {
if (expectRsp) {
icmd->un.elsreq64.myID = vport->fc_myDID;
/* For ELS_REQUEST64_CR, use the VPI by default */
icmd->ulpContext = phba->vpi_ids[vport->vpi];
}
icmd->ulpCt_h = 0;
/* The CT field must be 0=INVALID_RPI for the ECHO cmd */
if (elscmd == ELS_CMD_ECHO)
icmd->ulpCt_l = 0; /* context = invalid RPI */
else
icmd->ulpCt_l = 1; /* context = VPI */
}
bpl = (struct ulp_bde64 *) pbuflist->virt;
bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
bpl->tus.f.bdeSize = cmdSize;
bpl->tus.f.bdeFlags = 0;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
if (expectRsp) {
bpl++;
bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
bpl->tus.f.bdeSize = FCELSSIZE;
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
}
/* prevent preparing iocb with NULL ndlp reference */
elsiocb->context1 = lpfc_nlp_get(ndlp);
if (!elsiocb->context1)
goto els_iocb_free_pbuf_exit;
elsiocb->context2 = pcmd;
elsiocb->context3 = pbuflist;
elsiocb->retry = retry;
elsiocb->vport = vport;
elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
if (prsp) {
list_add(&prsp->list, &pcmd->list);
}
if (expectRsp) {
/* Xmit ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0116 Xmit ELS command x%x to remote "
"NPORT x%x I/O tag: x%x, port state:x%x"
" fc_flag:x%x\n",
elscmd, did, elsiocb->iotag,
vport->port_state,
vport->fc_flag);
} else {
/* Xmit ELS response <elsCmd> to remote NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0117 Xmit ELS response x%x to remote "
"NPORT x%x I/O tag: x%x, size: x%x "
"port_state x%x fc_flag x%x\n",
elscmd, ndlp->nlp_DID, elsiocb->iotag,
cmdSize, vport->port_state,
vport->fc_flag);
}
return elsiocb;
els_iocb_free_pbuf_exit:
if (expectRsp)
lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
kfree(pbuflist);
els_iocb_free_prsp_exit:
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
kfree(prsp);
els_iocb_free_pcmb_exit:
kfree(pcmd);
lpfc_sli_release_iocbq(phba, elsiocb);
return NULL;
}
/**
* lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues a fabric registration login for a @vport. An
* active ndlp node with Fabric_DID must already exist for this @vport.
* The routine invokes two mailbox commands to carry out fabric registration
* login through the HBA firmware: the first mailbox command requests the
* HBA to perform link configuration for the @vport; and the second mailbox
* command requests the HBA to perform the actual fabric registration login
* with the @vport.
*
* Return code
* 0 - successfully issued fabric registration login for @vport
* -ENXIO -- failed to issue fabric registration login for @vport
**/
int
lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
struct lpfc_dmabuf *mp;
struct lpfc_nodelist *ndlp;
struct serv_parm *sp;
int rc;
int err = 0;
sp = &phba->fc_fabparam;
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
err = 1;
goto fail;
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox) {
err = 2;
goto fail;
}
vport->port_state = LPFC_FABRIC_CFG_LINK;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
err = 3;
goto fail_free_mbox;
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox) {
err = 4;
goto fail;
}
rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
ndlp->nlp_rpi);
if (rc) {
err = 5;
goto fail_free_mbox;
}
mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
mbox->vport = vport;
/* increment the reference count on ndlp to hold reference
* for the callback routine.
*/
mbox->context2 = lpfc_nlp_get(ndlp);
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
err = 6;
goto fail_issue_reg_login;
}
return 0;
fail_issue_reg_login:
/* decrement the reference count on ndlp just incremented
* for the failed mbox command.
*/
lpfc_nlp_put(ndlp);
mp = (struct lpfc_dmabuf *) mbox->context1;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
fail_free_mbox:
mempool_free(mbox, phba->mbox_mem_pool);
fail:
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0249 Cannot issue Register Fabric login: Err %d\n", err);
return -ENXIO;
}
/**
* lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
* the @vport. This mailbox command is necessary for SLI4 port only.
*
* Return code
* 0 - successfully issued REG_VFI for @vport
* A failure code otherwise.
**/
int
lpfc_issue_reg_vfi(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mboxq;
struct lpfc_nodelist *ndlp;
struct lpfc_dmabuf *dmabuf;
int rc = 0;
/* move forward in case of SLI4 FC port loopback test and pt2pt mode */
if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(phba->link_flag & LS_LOOPBACK_MODE) &&
!(vport->fc_flag & FC_PT2PT)) {
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
rc = -ENODEV;
goto fail;
}
}
dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (!dmabuf) {
rc = -ENOMEM;
goto fail;
}
dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
if (!dmabuf->virt) {
rc = -ENOMEM;
goto fail_free_dmabuf;
}
mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq) {
rc = -ENOMEM;
goto fail_free_coherent;
}
vport->port_state = LPFC_FABRIC_CFG_LINK;
memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
mboxq->vport = vport;
mboxq->context1 = dmabuf;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
rc = -ENXIO;
goto fail_free_mbox;
}
return 0;
fail_free_mbox:
mempool_free(mboxq, phba->mbox_mem_pool);
fail_free_coherent:
lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
fail_free_dmabuf:
kfree(dmabuf);
fail:
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0289 Issue Register VFI failed: Err %d\n", rc);
return rc;
}
/**
* lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
* the @vport. This mailbox command is necessary for SLI4 port only.
*
* Return code
* 0 - successfully issued REG_VFI for @vport
* A failure code otherwise.
**/
int
lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
struct Scsi_Host *shost;
LPFC_MBOXQ_t *mboxq;
int rc;
mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq) {
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
"2556 UNREG_VFI mbox allocation failed"
"HBA state x%x\n", phba->pport->port_state);
return -ENOMEM;
}
lpfc_unreg_vfi(mboxq, vport);
mboxq->vport = vport;
mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
"2557 UNREG_VFI issue mbox failed rc x%x "
"HBA state x%x\n",
rc, phba->pport->port_state);
mempool_free(mboxq, phba->mbox_mem_pool);
return -EIO;
}
shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VFI_REGISTERED;
spin_unlock_irq(shost->host_lock);
return 0;
}
/**
* lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
* @vport: pointer to a host virtual N_Port data structure.
* @sp: pointer to service parameter data structure.
*
* This routine is called from FLOGI/FDISC completion handler functions.
* lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
* node nodename is changed in the completion service parameter else return
* 0. This function also set flag in the vport data structure to delay
* NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
* in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
* node nodename is changed in the completion service parameter.
*
* Return code
* 0 - FCID and Fabric Nodename and Fabric portname is not changed.
* 1 - FCID or Fabric Nodename or Fabric portname is changed.
*
**/
static uint8_t
lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
struct serv_parm *sp)
{
uint8_t fabric_param_changed = 0;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if ((vport->fc_prevDID != vport->fc_myDID) ||
memcmp(&vport->fabric_portname, &sp->portName,
sizeof(struct lpfc_name)) ||
memcmp(&vport->fabric_nodename, &sp->nodeName,
sizeof(struct lpfc_name)))
fabric_param_changed = 1;
/*
* Word 1 Bit 31 in common service parameter is overloaded.
* Word 1 Bit 31 in FLOGI request is multiple NPort request
* Word 1 Bit 31 in FLOGI response is clean address bit
*
* If fabric parameter is changed and clean address bit is
* cleared delay nport discovery if
* - vport->fc_prevDID != 0 (not initial discovery) OR
* - lpfc_delay_discovery module parameter is set.
*/
if (fabric_param_changed && !sp->cmn.clean_address_bit &&
(vport->fc_prevDID || lpfc_delay_discovery)) {
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_DISC_DELAYED;
spin_unlock_irq(shost->host_lock);
}
return fabric_param_changed;
}
/**
* lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @sp: pointer to service parameter data structure.
* @irsp: pointer to the IOCB within the lpfc response IOCB.
*
* This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
* function to handle the completion of a Fabric Login (FLOGI) into a fabric
* port in a fabric topology. It properly sets up the parameters to the @ndlp
* from the IOCB response. It also check the newly assigned N_Port ID to the
* @vport against the previously assigned N_Port ID. If it is different from
* the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
* is invoked on all the remaining nodes with the @vport to unregister the
* Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
* is invoked to register login to the fabric.
*
* Return code
* 0 - Success (currently, always return 0)
**/
static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct serv_parm *sp, IOCB_t *irsp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *np;
struct lpfc_nodelist *next_np;
uint8_t fabric_param_changed;
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_FABRIC;
spin_unlock_irq(shost->host_lock);
phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
phba->fc_edtovResol = sp->cmn.edtovResolution;
phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_PUBLIC_LOOP;
spin_unlock_irq(shost->host_lock);
}
vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
ndlp->nlp_class_sup = 0;
if (sp->cls1.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS1;
if (sp->cls2.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS2;
if (sp->cls3.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS3;
if (sp->cls4.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS4;
ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
sp->cmn.bbRcvSizeLsb;
fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
memcpy(&vport->fabric_portname, &sp->portName,
sizeof(struct lpfc_name));
memcpy(&vport->fabric_nodename, &sp->nodeName,
sizeof(struct lpfc_name));
memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
if (sp->cmn.response_multiple_NPort) {
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_ELS | LOG_VPORT,
"1816 FLOGI NPIV supported, "
"response data 0x%x\n",
sp->cmn.response_multiple_NPort);
spin_lock_irq(&phba->hbalock);
phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
spin_unlock_irq(&phba->hbalock);
} else {
/* Because we asked f/w for NPIV it still expects us
to call reg_vnpid atleast for the physcial host */
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_ELS | LOG_VPORT,
"1817 Fabric does not support NPIV "
"- configuring single port mode.\n");
spin_lock_irq(&phba->hbalock);
phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
spin_unlock_irq(&phba->hbalock);
}
}
/*
* For FC we need to do some special processing because of the SLI
* Port's default settings of the Common Service Parameters.
*/
if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC) {
/* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
if ((phba->sli_rev == LPFC_SLI_REV4) && fabric_param_changed)
lpfc_unregister_fcf_prep(phba);
/* This should just update the VFI CSPs*/
if (vport->fc_flag & FC_VFI_REGISTERED)
lpfc_issue_reg_vfi(vport);
}
if (fabric_param_changed &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
/* If our NportID changed, we need to ensure all
* remaining NPORTs get unreg_login'ed.
*/
list_for_each_entry_safe(np, next_np,
&vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(np))
continue;
if ((np->nlp_state != NLP_STE_NPR_NODE) ||
!(np->nlp_flag & NLP_NPR_ADISC))
continue;
spin_lock_irq(shost->host_lock);
np->nlp_flag &= ~NLP_NPR_ADISC;
spin_unlock_irq(shost->host_lock);
lpfc_unreg_rpi(vport, np);
}
lpfc_cleanup_pending_mbox(vport);
if (phba->sli_rev == LPFC_SLI_REV4) {
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
spin_unlock_irq(shost->host_lock);
}
/*
* For SLI3 and SLI4, the VPI needs to be reregistered in
* response to this fabric parameter change event.
*/
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
} else if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
/*
* Driver needs to re-reg VPI in order for f/w
* to update the MAC address.
*/
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
lpfc_register_new_vport(phba, vport, ndlp);
return 0;
}
if (phba->sli_rev < LPFC_SLI_REV4) {
lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
lpfc_register_new_vport(phba, vport, ndlp);
else
lpfc_issue_fabric_reglogin(vport);
} else {
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
(vport->vpi_state & LPFC_VPI_REGISTERED)) {
lpfc_start_fdiscs(phba);
lpfc_do_scr_ns_plogi(phba, vport);
} else if (vport->fc_flag & FC_VFI_REGISTERED)
lpfc_issue_init_vpi(vport);
else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3135 Need register VFI: (x%x/%x)\n",
vport->fc_prevDID, vport->fc_myDID);
lpfc_issue_reg_vfi(vport);
}
}
return 0;
}
/**
* lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @sp: pointer to service parameter data structure.
*
* This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
* function to handle the completion of a Fabric Login (FLOGI) into an N_Port
* in a point-to-point topology. First, the @vport's N_Port Name is compared
* with the received N_Port Name: if the @vport's N_Port Name is greater than
* the received N_Port Name lexicographically, this node shall assign local
* N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
* will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
* this node shall just wait for the remote node to issue PLOGI and assign
* N_Port IDs.
*
* Return code
* 0 - Success
* -ENXIO - Fail
**/
static int
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct serv_parm *sp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
int rc;
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(shost->host_lock);
phba->fc_edtov = FF_DEF_EDTOV;
phba->fc_ratov = FF_DEF_RATOV;
rc = memcmp(&vport->fc_portname, &sp->portName,
sizeof(vport->fc_portname));
memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
if (rc >= 0) {
/* This side will initiate the PLOGI */
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_PT2PT_PLOGI;
spin_unlock_irq(shost->host_lock);
/*
* N_Port ID cannot be 0, set our to LocalID the other
* side will be RemoteID.
*/
/* not equal */
if (rc)
vport->fc_myDID = PT2PT_LocalID;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
goto fail;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
goto fail;
}
/*
* For SLI4, the VFI/VPI are registered AFTER the
* Nport with the higher WWPN sends the PLOGI with
* an assigned NPortId.
*/
/* not equal */
if ((phba->sli_rev == LPFC_SLI_REV4) && rc)
lpfc_issue_reg_vfi(vport);
/* Decrement ndlp reference count indicating that ndlp can be
* safely released when other references to it are done.
*/
lpfc_nlp_put(ndlp);
ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
if (!ndlp) {
/*
* Cannot find existing Fabric ndlp, so allocate a
* new one
*/
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
goto fail;
lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp,
NLP_STE_UNUSED_NODE);
if(!ndlp)
goto fail;
}
memcpy(&ndlp->nlp_portname, &sp->portName,
sizeof(struct lpfc_name));
memcpy(&ndlp->nlp_nodename, &sp->nodeName,
sizeof(struct lpfc_name));
/* Set state will put ndlp onto node list if not already done */
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
} else
/* This side will wait for the PLOGI, decrement ndlp reference
* count indicating that ndlp can be released when other
* references to it are done.
*/
lpfc_nlp_put(ndlp);
/* If we are pt2pt with another NPort, force NPIV off! */
phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_PT2PT;
spin_unlock_irq(shost->host_lock);
/* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
lpfc_unregister_fcf_prep(phba);
/* The FC_VFI_REGISTERED flag will get clear in the cmpl
* handler for unreg_vfi, but if we don't force the
* FC_VFI_REGISTERED flag then the reg_vfi mailbox could be
* built with the update bit set instead of just the vp bit to
* change the Nport ID. We need to have the vp set and the
* Upd cleared on topology changes.
*/
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VFI_REGISTERED;
spin_unlock_irq(shost->host_lock);
phba->fc_topology_changed = 0;
lpfc_issue_reg_vfi(vport);
}
/* Start discovery - this should just do CLEAR_LA */
lpfc_disc_start(vport);
return 0;
fail:
return -ENXIO;
}
/**
* lpfc_cmpl_els_flogi - Completion callback function for flogi
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the top-level completion callback function for issuing
* a Fabric Login (FLOGI) command. If the response IOCB reported error,
* the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
* retry has been made (either immediately or delayed with lpfc_els_retry()
* returning 1), the command IOCB will be released and function returned.
* If the retry attempt has been given up (possibly reach the maximum
* number of retries), one additional decrement of ndlp reference shall be
* invoked before going out after releasing the command IOCB. This will
* actually release the remote node (Note, lpfc_els_free_iocb() will also
* invoke one decrement of ndlp reference count). If no error reported in
* the IOCB status, the command Port ID field is used to determine whether
* this is a point-to-point topology or a fabric topology: if the Port ID
* field is assigned, it is a fabric topology; otherwise, it is a
* point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
* lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
* specific topology completion conditions.
**/
static void
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp = &rspiocb->iocb;
struct lpfc_nodelist *ndlp = cmdiocb->context1;
struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
struct serv_parm *sp;
uint16_t fcf_index;
int rc;
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(vport)) {
/* One additional decrement on node reference count to
* trigger the release of the node
*/
lpfc_nlp_put(ndlp);
goto out;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"FLOGI cmpl: status:x%x/x%x state:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
vport->port_state);
if (irsp->ulpStatus) {
/*
* In case of FIP mode, perform roundrobin FCF failover
* due to new FCF discovery
*/
if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
(phba->fcf.fcf_flag & FCF_DISCOVERY)) {
if (phba->link_state < LPFC_LINK_UP)
goto stop_rr_fcf_flogi;
if ((phba->fcoe_cvl_eventtag_attn ==
phba->fcoe_cvl_eventtag) &&
(irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
IOERR_SLI_ABORTED))
goto stop_rr_fcf_flogi;
else
phba->fcoe_cvl_eventtag_attn =
phba->fcoe_cvl_eventtag;
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
"2611 FLOGI failed on FCF (x%x), "
"status:x%x/x%x, tmo:x%x, perform "
"roundrobin FCF failover\n",
phba->fcf.current_rec.fcf_indx,
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout);
lpfc_sli4_set_fcf_flogi_fail(phba,
phba->fcf.current_rec.fcf_indx);
fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
if (rc)
goto out;
}
stop_rr_fcf_flogi:
/* FLOGI failure */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2858 FLOGI failure Status:x%x/x%x TMO:x%x "
"Data x%x x%x\n",
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, phba->hba_flag,
phba->fcf.fcf_flag);
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb))
goto out;
/* FLOGI failure */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout);
/* FLOGI failed, so there is no fabric */
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(shost->host_lock);
/* If private loop, then allow max outstanding els to be
* LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
* alpa map would take too long otherwise.
*/
if (phba->alpa_map[0] == 0)
vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
if ((phba->sli_rev == LPFC_SLI_REV4) &&
(!(vport->fc_flag & FC_VFI_REGISTERED) ||
(vport->fc_prevDID != vport->fc_myDID) ||
phba->fc_topology_changed)) {
if (vport->fc_flag & FC_VFI_REGISTERED) {
if (phba->fc_topology_changed) {
lpfc_unregister_fcf_prep(phba);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VFI_REGISTERED;
spin_unlock_irq(shost->host_lock);
phba->fc_topology_changed = 0;
} else {
lpfc_sli4_unreg_all_rpis(vport);
}
}
lpfc_issue_reg_vfi(vport);
lpfc_nlp_put(ndlp);
goto out;
}
goto flogifail;
}
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
spin_unlock_irq(shost->host_lock);
/*
* The FLogI succeeded. Sync the data for the CPU before
* accessing it.
*/
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
if (!prsp)
goto out;
sp = prsp->virt + sizeof(uint32_t);
/* FLOGI completes successfully */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0101 FLOGI completes successfully, I/O tag:x%x, "
"Data: x%x x%x x%x x%x x%x x%x\n", cmdiocb->iotag,
irsp->un.ulpWord[4], sp->cmn.e_d_tov,
sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
vport->port_state, vport->fc_flag);
if (vport->port_state == LPFC_FLOGI) {
/*
* If Common Service Parameters indicate Nport
* we are point to point, if Fport we are Fabric.
*/
if (sp->cmn.fPort)
rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
else if (!(phba->hba_flag & HBA_FCOE_MODE))
rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
else {
lpfc_printf_vlog(vport, KERN_ERR,
LOG_FIP | LOG_ELS,
"2831 FLOGI response with cleared Fabric "
"bit fcf_index 0x%x "
"Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
"Fabric Name "
"%02x%02x%02x%02x%02x%02x%02x%02x\n",
phba->fcf.current_rec.fcf_indx,
phba->fcf.current_rec.switch_name[0],
phba->fcf.current_rec.switch_name[1],
phba->fcf.current_rec.switch_name[2],
phba->fcf.current_rec.switch_name[3],
phba->fcf.current_rec.switch_name[4],
phba->fcf.current_rec.switch_name[5],
phba->fcf.current_rec.switch_name[6],
phba->fcf.current_rec.switch_name[7],
phba->fcf.current_rec.fabric_name[0],
phba->fcf.current_rec.fabric_name[1],
phba->fcf.current_rec.fabric_name[2],
phba->fcf.current_rec.fabric_name[3],
phba->fcf.current_rec.fabric_name[4],
phba->fcf.current_rec.fabric_name[5],
phba->fcf.current_rec.fabric_name[6],
phba->fcf.current_rec.fabric_name[7]);
lpfc_nlp_put(ndlp);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
spin_unlock_irq(&phba->hbalock);
goto out;
}
if (!rc) {
/* Mark the FCF discovery process done */
if (phba->hba_flag & HBA_FIP_SUPPORT)
lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
LOG_ELS,
"2769 FLOGI to FCF (x%x) "
"completed successfully\n",
phba->fcf.current_rec.fcf_indx);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
spin_unlock_irq(&phba->hbalock);
goto out;
}
}
flogifail:
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
spin_unlock_irq(&phba->hbalock);
lpfc_nlp_put(ndlp);
if (!lpfc_error_lost_link(irsp)) {
/* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(vport);
/* Start discovery */
lpfc_disc_start(vport);
} else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
(((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
IOERR_SLI_ABORTED) &&
((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
IOERR_SLI_DOWN))) &&
(phba->link_state != LPFC_CLEAR_LA)) {
/* If FLOGI failed enable link interrupt. */
lpfc_issue_clear_la(phba, vport);
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
}
/**
* lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @retry: number of retries to the command IOCB.
*
* This routine issues a Fabric Login (FLOGI) Request ELS command
* for a @vport. The initiator service parameters are put into the payload
* of the FLOGI Request IOCB and the top-level callback function pointer
* to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
* function field. The lpfc_issue_fabric_iocb routine is invoked to send
* out FLOGI ELS command with one outstanding fabric IOCB at a time.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the FLOGI ELS command.
*
* Return code
* 0 - successfully issued flogi iocb for @vport
* 1 - failed to issue flogi iocb for @vport
**/
static int
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
struct lpfc_hba *phba = vport->phba;
struct serv_parm *sp;
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
uint32_t tmo;
int rc;
cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_FLOGI);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For FLOGI request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
sp = (struct serv_parm *) pcmd;
/* Setup CSPs accordingly for Fabric */
sp->cmn.e_d_tov = 0;
sp->cmn.w2.r_a_tov = 0;
sp->cmn.virtual_fabric_support = 0;
sp->cls1.classValid = 0;
if (sp->cmn.fcphLow < FC_PH3)
sp->cmn.fcphLow = FC_PH3;
if (sp->cmn.fcphHigh < FC_PH3)
sp->cmn.fcphHigh = FC_PH3;
if (phba->sli_rev == LPFC_SLI_REV4) {
if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_IF_TYPE_0) {
elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
/* FLOGI needs to be 3 for WQE FCFI */
/* Set the fcfi to the fcfi we registered with */
elsiocb->iocb.ulpContext = phba->fcf.fcfi;
}
/* Can't do SLI4 class2 without support sequence coalescing */
sp->cls2.classValid = 0;
sp->cls2.seqDelivery = 0;
} else {
/* Historical, setting sequential-delivery bit for SLI3 */
sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
sp->cmn.request_multiple_Nport = 1;
/* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
icmd->ulpCt_h = 1;
icmd->ulpCt_l = 0;
} else
sp->cmn.request_multiple_Nport = 0;
}
if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
icmd->un.elsreq64.myID = 0;
icmd->un.elsreq64.fl = 1;
}
tmo = phba->fc_ratov;
phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
lpfc_set_disctmo(vport);
phba->fc_ratov = tmo;
phba->fc_stat.elsXmitFLOGI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue FLOGI: opt:x%x",
phba->sli3_options, 0, 0);
rc = lpfc_issue_fabric_iocb(phba, elsiocb);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
* @phba: pointer to lpfc hba data structure.
*
* This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
* with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
* list and issues an abort IOCB commond on each outstanding IOCB that
* contains a active Fabric_DID ndlp. Note that this function is to issue
* the abort IOCB command on all the outstanding IOCBs, thus when this
* function returns, it does not guarantee all the IOCBs are actually aborted.
*
* Return code
* 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
**/
int
lpfc_els_abort_flogi(struct lpfc_hba *phba)
{
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *iocb, *next_iocb;
struct lpfc_nodelist *ndlp;
IOCB_t *icmd;
/* Abort outstanding I/O on NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"0201 Abort outstanding I/O on NPort x%x\n",
Fabric_DID);
pring = &phba->sli.ring[LPFC_ELS_RING];
/*
* Check the txcmplq for an iocb that matches the nport the driver is
* searching for.
*/
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
icmd = &iocb->iocb;
if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
ndlp = (struct lpfc_nodelist *)(iocb->context1);
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
(ndlp->nlp_DID == Fabric_DID))
lpfc_sli_issue_abort_iotag(phba, pring, iocb);
}
}
spin_unlock_irq(&phba->hbalock);
return 0;
}
/**
* lpfc_initial_flogi - Issue an initial fabric login for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues an initial Fabric Login (FLOGI) for the @vport
* specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
* the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
* put it into the @vport's ndlp list. If an inactive ndlp found on the list,
* it will just be enabled and made active. The lpfc_issue_els_flogi() routine
* is then invoked with the @vport and the ndlp to perform the FLOGI for the
* @vport.
*
* Return code
* 0 - failed to issue initial flogi for @vport
* 1 - successfully issued initial flogi for @vport
**/
int
lpfc_initial_flogi(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp;
vport->port_state = LPFC_FLOGI;
lpfc_set_disctmo(vport);
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
return 0;
lpfc_nlp_init(vport, ndlp, Fabric_DID);
/* Set the node type */
ndlp->nlp_type |= NLP_FABRIC;
/* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
/* re-setup ndlp without removing from node list */
ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
if (!ndlp)
return 0;
}
if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
/* This decrement of reference count to node shall kick off
* the release of the node.
*/
lpfc_nlp_put(ndlp);
return 0;
}
return 1;
}
/**
* lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues an initial Fabric Discover (FDISC) for the @vport
* specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
* the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
* put it into the @vport's ndlp list. If an inactive ndlp found on the list,
* it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
* is then invoked with the @vport and the ndlp to perform the FDISC for the
* @vport.
*
* Return code
* 0 - failed to issue initial fdisc for @vport
* 1 - successfully issued initial fdisc for @vport
**/
int
lpfc_initial_fdisc(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp;
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
return 0;
lpfc_nlp_init(vport, ndlp, Fabric_DID);
/* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
/* re-setup ndlp without removing from node list */
ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
if (!ndlp)
return 0;
}
if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
/* decrement node reference count to trigger the release of
* the node.
*/
lpfc_nlp_put(ndlp);
return 0;
}
return 1;
}
/**
* lpfc_more_plogi - Check and issue remaining plogis for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine checks whether there are more remaining Port Logins
* (PLOGI) to be issued for the @vport. If so, it will invoke the routine
* lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
* to issue ELS PLOGIs up to the configured discover threads with the
* @vport (@vport->cfg_discovery_threads). The function also decrement
* the @vport's num_disc_node by 1 if it is not already 0.
**/
void
lpfc_more_plogi(struct lpfc_vport *vport)
{
if (vport->num_disc_nodes)
vport->num_disc_nodes--;
/* Continue discovery with <num_disc_nodes> PLOGIs to go */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0232 Continue discovery with %d PLOGIs to go "
"Data: x%x x%x x%x\n",
vport->num_disc_nodes, vport->fc_plogi_cnt,
vport->fc_flag, vport->port_state);
/* Check to see if there are more PLOGIs to be sent */
if (vport->fc_flag & FC_NLP_MORE)
/* go thru NPR nodes and issue any remaining ELS PLOGIs */
lpfc_els_disc_plogi(vport);
return;
}
/**
* lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
* @phba: pointer to lpfc hba data structure.
* @prsp: pointer to response IOCB payload.
* @ndlp: pointer to a node-list data structure.
*
* This routine checks and indicates whether the WWPN of an N_Port, retrieved
* from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
* The following cases are considered N_Port confirmed:
* 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
* the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
* it does not have WWPN assigned either. If the WWPN is confirmed, the
* pointer to the @ndlp will be returned. If the WWPN is not confirmed:
* 1) if there is a node on vport list other than the @ndlp with the same
* WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
* on that node to release the RPI associated with the node; 2) if there is
* no node found on vport list with the same WWPN of the N_Port PLOGI logged
* into, a new node shall be allocated (or activated). In either case, the
* parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
* be released and the new_ndlp shall be put on to the vport node list and
* its pointer returned as the confirmed node.
*
* Note that before the @ndlp got "released", the keepDID from not-matching
* or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
* of the @ndlp. This is because the release of @ndlp is actually to put it
* into an inactive state on the vport node list and the vport node list
* management algorithm does not allow two node with a same DID.
*
* Return code
* pointer to the PLOGI N_Port @ndlp
**/
static struct lpfc_nodelist *
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
struct lpfc_nodelist *ndlp)
{
struct lpfc_vport *vport = ndlp->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *new_ndlp;
struct lpfc_rport_data *rdata;
struct fc_rport *rport;
struct serv_parm *sp;
uint8_t name[sizeof(struct lpfc_name)];
uint32_t rc, keepDID = 0, keep_nlp_flag = 0;
uint16_t keep_nlp_state;
int put_node;
int put_rport;
unsigned long *active_rrqs_xri_bitmap = NULL;
/* Fabric nodes can have the same WWPN so we don't bother searching
* by WWPN. Just return the ndlp that was given to us.
*/
if (ndlp->nlp_type & NLP_FABRIC)
return ndlp;
sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
memset(name, 0, sizeof(struct lpfc_name));
/* Now we find out if the NPort we are logging into, matches the WWPN
* we have for that ndlp. If not, we have some work to do.
*/
new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
return ndlp;
if (phba->sli_rev == LPFC_SLI_REV4) {
active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
GFP_KERNEL);
if (active_rrqs_xri_bitmap)
memset(active_rrqs_xri_bitmap, 0,
phba->cfg_rrq_xri_bitmap_sz);
}
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3178 PLOGI confirm: ndlp %p x%x: new_ndlp %p\n",
ndlp, ndlp->nlp_DID, new_ndlp);
if (!new_ndlp) {
rc = memcmp(&ndlp->nlp_portname, name,
sizeof(struct lpfc_name));
if (!rc) {
if (active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool);
return ndlp;
}
new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
if (!new_ndlp) {
if (active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool);
return ndlp;
}
lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
} else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
rc = memcmp(&ndlp->nlp_portname, name,
sizeof(struct lpfc_name));
if (!rc) {
if (active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool);
return ndlp;
}
new_ndlp = lpfc_enable_node(vport, new_ndlp,
NLP_STE_UNUSED_NODE);
if (!new_ndlp) {
if (active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool);
return ndlp;
}
keepDID = new_ndlp->nlp_DID;
if ((phba->sli_rev == LPFC_SLI_REV4) && active_rrqs_xri_bitmap)
memcpy(active_rrqs_xri_bitmap,
new_ndlp->active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
} else {
keepDID = new_ndlp->nlp_DID;
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(active_rrqs_xri_bitmap,
new_ndlp->active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
}
lpfc_unreg_rpi(vport, new_ndlp);
new_ndlp->nlp_DID = ndlp->nlp_DID;
new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
if (phba->sli_rev == LPFC_SLI_REV4)
memcpy(new_ndlp->active_rrqs_xri_bitmap,
ndlp->active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
spin_lock_irq(shost->host_lock);
keep_nlp_flag = new_ndlp->nlp_flag;
new_ndlp->nlp_flag = ndlp->nlp_flag;
ndlp->nlp_flag = keep_nlp_flag;
spin_unlock_irq(shost->host_lock);
/* Set nlp_states accordingly */
keep_nlp_state = new_ndlp->nlp_state;
lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
/* Move this back to NPR state */
if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
/* The new_ndlp is replacing ndlp totally, so we need
* to put ndlp on UNUSED list and try to free it.
*/
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3179 PLOGI confirm NEW: %x %x\n",
new_ndlp->nlp_DID, keepDID);
/* Fix up the rport accordingly */
rport = ndlp->rport;
if (rport) {
rdata = rport->dd_data;
if (rdata->pnode == ndlp) {
/* break the link before dropping the ref */
ndlp->rport = NULL;
lpfc_nlp_put(ndlp);
rdata->pnode = lpfc_nlp_get(new_ndlp);
new_ndlp->rport = rport;
}
new_ndlp->nlp_type = ndlp->nlp_type;
}
/* We shall actually free the ndlp with both nlp_DID and
* nlp_portname fields equals 0 to avoid any ndlp on the
* nodelist never to be used.
*/
if (ndlp->nlp_DID == 0) {
spin_lock_irq(&phba->ndlp_lock);
NLP_SET_FREE_REQ(ndlp);
spin_unlock_irq(&phba->ndlp_lock);
}
/* Two ndlps cannot have the same did on the nodelist */
ndlp->nlp_DID = keepDID;
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(ndlp->active_rrqs_xri_bitmap,
active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
if (!NLP_CHK_NODE_ACT(ndlp))
lpfc_drop_node(vport, ndlp);
}
else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3180 PLOGI confirm SWAP: %x %x\n",
new_ndlp->nlp_DID, keepDID);
lpfc_unreg_rpi(vport, ndlp);
/* Two ndlps cannot have the same did */
ndlp->nlp_DID = keepDID;
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(ndlp->active_rrqs_xri_bitmap,
active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
/* Since we are switching over to the new_ndlp,
* reset the old ndlp state
*/
if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
(ndlp->nlp_state == NLP_STE_MAPPED_NODE))
keep_nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
/* Fix up the rport accordingly */
rport = ndlp->rport;
if (rport) {
rdata = rport->dd_data;
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
}
}
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool);
return new_ndlp;
}
/**
* lpfc_end_rscn - Check and handle more rscn for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine checks whether more Registration State Change
* Notifications (RSCNs) came in while the discovery state machine was in
* the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
* invoked to handle the additional RSCNs for the @vport. Otherwise, the
* FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
* handling the RSCNs.
**/
void
lpfc_end_rscn(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (vport->fc_flag & FC_RSCN_MODE) {
/*
* Check to see if more RSCNs came in while we were
* processing this one.
*/
if (vport->fc_rscn_id_cnt ||
(vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
lpfc_els_handle_rscn(vport);
else {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_RSCN_MODE;
spin_unlock_irq(shost->host_lock);
}
}
}
/**
* lpfc_cmpl_els_rrq - Completion handled for els RRQs.
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine will call the clear rrq function to free the rrq and
* clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
* exist then the clear_rrq is still called because the rrq needs to
* be freed.
**/
static void
lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp;
struct lpfc_nodelist *ndlp;
struct lpfc_node_rrq *rrq;
/* we pass cmdiocb to state machine which needs rspiocb as well */
rrq = cmdiocb->context_un.rrq;
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &rspiocb->iocb;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"RRQ cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->un.elsreq64.remoteID);
ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || ndlp != rrq->ndlp) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2882 RRQ completes to NPort x%x "
"with no ndlp. Data: x%x x%x x%x\n",
irsp->un.elsreq64.remoteID,
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpIoTag);
goto out;
}
/* rrq completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2880 RRQ completes to NPort x%x "
"Data: x%x x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, rrq->xritag, rrq->rxid);
if (irsp->ulpStatus) {
/* Check for retry */
/* RRQ failed Don't print the vport to vport rjts */
if (irsp->ulpStatus != IOSTAT_LS_RJT ||
(((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
(phba)->pport->cfg_log_verbose & LOG_ELS)
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2881 RRQ failure DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4]);
}
out:
if (rrq)
lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_cmpl_els_plogi - Completion callback function for plogi
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion callback function for issuing the Port
* Login (PLOGI) command. For PLOGI completion, there must be an active
* ndlp on the vport node list that matches the remote node ID from the
* PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
* ignored and command IOCB released. The PLOGI response IOCB status is
* checked for error conditons. If there is error status reported, PLOGI
* retry shall be attempted by invoking the lpfc_els_retry() routine.
* Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
* the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
* (DSM) is set for this PLOGI completion. Finally, it checks whether
* there are additional N_Port nodes with the vport that need to perform
* PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
* PLOGIs.
**/
static void
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp;
struct lpfc_nodelist *ndlp;
struct lpfc_dmabuf *prsp;
int disc, rc;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &rspiocb->iocb;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"PLOGI cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->un.elsreq64.remoteID);
ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0136 PLOGI completes to NPort x%x "
"with no ndlp. Data: x%x x%x x%x\n",
irsp->un.elsreq64.remoteID,
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpIoTag);
goto out;
}
/* Since ndlp can be freed in the disc state machine, note if this node
* is being used during discovery.
*/
spin_lock_irq(shost->host_lock);
disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
rc = 0;
/* PLOGI completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0102 PLOGI completes to NPort x%x "
"Data: x%x x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, disc, vport->num_disc_nodes);
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(vport)) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
goto out;
}
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
if (disc) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
}
goto out;
}
/* PLOGI failed Don't print the vport to vport rjts */
if (irsp->ulpStatus != IOSTAT_LS_RJT ||
(((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
(phba)->pport->cfg_log_verbose & LOG_ELS)
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4]);
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if (lpfc_error_lost_link(irsp))
rc = NLP_STE_FREED_NODE;
else
rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PLOGI);
} else {
/* Good status, call state machine */
prsp = list_entry(((struct lpfc_dmabuf *)
cmdiocb->context2)->list.next,
struct lpfc_dmabuf, list);
ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PLOGI);
}
if (disc && vport->num_disc_nodes) {
/* Check to see if there are more PLOGIs to be sent */
lpfc_more_plogi(vport);
if (vport->num_disc_nodes == 0) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
* @vport: pointer to a host virtual N_Port data structure.
* @did: destination port identifier.
* @retry: number of retries to the command IOCB.
*
* This routine issues a Port Login (PLOGI) command to a remote N_Port
* (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
* the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
* This routine constructs the proper feilds of the PLOGI IOCB and invokes
* the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the PLOGI ELS command.
*
* Return code
* 0 - Successfully issued a plogi for @vport
* 1 - failed to issue a plogi for @vport
**/
int
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
{
struct lpfc_hba *phba = vport->phba;
struct serv_parm *sp;
struct lpfc_nodelist *ndlp;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int ret;
ndlp = lpfc_findnode_did(vport, did);
if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
ndlp = NULL;
/* If ndlp is not NULL, we will bump the reference count on it */
cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
ELS_CMD_PLOGI);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For PLOGI request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
sp = (struct serv_parm *) pcmd;
/*
* If we are a N-port connected to a Fabric, fix-up paramm's so logins
* to device on remote loops work.
*/
if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
sp->cmn.altBbCredit = 1;
if (sp->cmn.fcphLow < FC_PH_4_3)
sp->cmn.fcphLow = FC_PH_4_3;
if (sp->cmn.fcphHigh < FC_PH3)
sp->cmn.fcphHigh = FC_PH3;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue PLOGI: did:x%x",
did, 0, 0);
phba->fc_stat.elsXmitPLOGI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (ret == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_cmpl_els_prli - Completion callback function for prli
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion callback function for a Process Login
* (PRLI) ELS command. The PRLI response IOCB status is checked for error
* status. If there is error status reported, PRLI retry shall be attempted
* by invoking the lpfc_els_retry() routine. Otherwise, the state
* NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
* ndlp to mark the PRLI completion.
**/
static void
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp;
struct lpfc_nodelist *ndlp;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &(rspiocb->iocb);
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_PRLI_SND;
spin_unlock_irq(shost->host_lock);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"PRLI cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
ndlp->nlp_DID);
/* PRLI completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0103 PRLI completes to NPort x%x "
"Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, vport->num_disc_nodes);
vport->fc_prli_sent--;
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(vport))
goto out;
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
goto out;
}
/* PRLI failed */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2754 PRLI failure DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4]);
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if (lpfc_error_lost_link(irsp))
goto out;
else
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
} else
/* Good status, call state machine */
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_issue_els_prli - Issue a prli iocb command for a vport
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @retry: number of retries to the command IOCB.
*
* This routine issues a Process Login (PRLI) ELS command for the
* @vport. The PRLI service parameters are set up in the payload of the
* PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
* is put to the IOCB completion callback func field before invoking the
* routine lpfc_sli_issue_iocb() to send out PRLI command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the PRLI ELS command.
*
* Return code
* 0 - successfully issued prli iocb command for @vport
* 1 - failed to issue prli iocb command for @vport
**/
int
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
PRLI *npr;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_PRLI);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For PRLI request, remainder of payload is service parameters */
memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
pcmd += sizeof(uint32_t);
/* For PRLI, remainder of payload is PRLI parameter page */
npr = (PRLI *) pcmd;
/*
* If our firmware version is 3.20 or later,
* set the following bits for FC-TAPE support.
*/
if (phba->vpd.rev.feaLevelHigh >= 0x02) {
npr->ConfmComplAllowed = 1;
npr->Retry = 1;
npr->TaskRetryIdReq = 1;
}
npr->estabImagePair = 1;
npr->readXferRdyDis = 1;
if (vport->cfg_first_burst_size)
npr->writeXferRdyDis = 1;
/* For FCP support */
npr->prliType = PRLI_FCP_TYPE;
npr->initiatorFunc = 1;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue PRLI: did:x%x",
ndlp->nlp_DID, 0, 0);
phba->fc_stat.elsXmitPRLI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_PRLI_SND;
spin_unlock_irq(shost->host_lock);
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_PRLI_SND;
spin_unlock_irq(shost->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
vport->fc_prli_sent++;
return 0;
}
/**
* lpfc_rscn_disc - Perform rscn discovery for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine performs Registration State Change Notification (RSCN)
* discovery for a @vport. If the @vport's node port recovery count is not
* zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
* the nodes that need recovery. If none of the PLOGI were needed through
* the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
* invoked to check and handle possible more RSCN came in during the period
* of processing the current ones.
**/
static void
lpfc_rscn_disc(struct lpfc_vport *vport)
{
lpfc_can_disctmo(vport);
/* RSCN discovery */
/* go thru NPR nodes and issue ELS PLOGIs */
if (vport->fc_npr_cnt)
if (lpfc_els_disc_plogi(vport))
return;
lpfc_end_rscn(vport);
}
/**
* lpfc_adisc_done - Complete the adisc phase of discovery
* @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
*
* This function is called when the final ADISC is completed during discovery.
* This function handles clearing link attention or issuing reg_vpi depending
* on whether npiv is enabled. This function also kicks off the PLOGI phase of
* discovery.
* This function is called with no locks held.
**/
static void
lpfc_adisc_done(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
/*
* For NPIV, cmpl_reg_vpi will set port_state to READY,
* and continue discovery.
*/
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
!(vport->fc_flag & FC_RSCN_MODE) &&
(phba->sli_rev < LPFC_SLI_REV4)) {
/* The ADISCs are complete. Doesn't matter if they
* succeeded or failed because the ADISC completion
* routine guarantees to call the state machine and
* the RPI is either unregistered (failed ADISC response)
* or the RPI is still valid and the node is marked
* mapped for a target. The exchanges should be in the
* correct state. This code is specific to SLI3.
*/
lpfc_issue_clear_la(phba, vport);
lpfc_issue_reg_vpi(phba, vport);
return;
}
/*
* For SLI2, we need to set port_state to READY
* and continue discovery.
*/
if (vport->port_state < LPFC_VPORT_READY) {
/* If we get here, there is nothing to ADISC */
lpfc_issue_clear_la(phba, vport);
if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
vport->num_disc_nodes = 0;
/* go thru NPR list, issue ELS PLOGIs */
if (vport->fc_npr_cnt)
lpfc_els_disc_plogi(vport);
if (!vport->num_disc_nodes) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
vport->port_state = LPFC_VPORT_READY;
} else
lpfc_rscn_disc(vport);
}
/**
* lpfc_more_adisc - Issue more adisc as needed
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine determines whether there are more ndlps on a @vport
* node list need to have Address Discover (ADISC) issued. If so, it will
* invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
* remaining nodes which need to have ADISC sent.
**/
void
lpfc_more_adisc(struct lpfc_vport *vport)
{
if (vport->num_disc_nodes)
vport->num_disc_nodes--;
/* Continue discovery with <num_disc_nodes> ADISCs to go */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0210 Continue discovery with %d ADISCs to go "
"Data: x%x x%x x%x\n",
vport->num_disc_nodes, vport->fc_adisc_cnt,
vport->fc_flag, vport->port_state);
/* Check to see if there are more ADISCs to be sent */
if (vport->fc_flag & FC_NLP_MORE) {
lpfc_set_disctmo(vport);
/* go thru NPR nodes and issue any remaining ELS ADISCs */
lpfc_els_disc_adisc(vport);
}
if (!vport->num_disc_nodes)
lpfc_adisc_done(vport);
return;
}
/**
* lpfc_cmpl_els_adisc - Completion callback function for adisc
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion function for issuing the Address Discover
* (ADISC) command. It first checks to see whether link went down during
* the discovery process. If so, the node will be marked as node port
* recovery for issuing discover IOCB by the link attention handler and
* exit. Otherwise, the response status is checked. If error was reported
* in the response status, the ADISC command shall be retried by invoking
* the lpfc_els_retry() routine. Otherwise, if no error was reported in
* the response status, the state machine is invoked to set transition
* with respect to NLP_EVT_CMPL_ADISC event.
**/
static void
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp;
struct lpfc_nodelist *ndlp;
int disc;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &(rspiocb->iocb);
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"ADISC cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
ndlp->nlp_DID);
/* Since ndlp can be freed in the disc state machine, note if this node
* is being used during discovery.
*/
spin_lock_irq(shost->host_lock);
disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
spin_unlock_irq(shost->host_lock);
/* ADISC completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0104 ADISC completes to NPort x%x "
"Data: x%x x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, disc, vport->num_disc_nodes);
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(vport)) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
goto out;
}
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
if (disc) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
lpfc_set_disctmo(vport);
}
goto out;
}
/* ADISC failed */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2755 ADISC failure DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4]);
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if (!lpfc_error_lost_link(irsp))
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
} else
/* Good status, call state machine */
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
/* Check to see if there are more ADISCs to be sent */
if (disc && vport->num_disc_nodes)
lpfc_more_adisc(vport);
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
* @vport: pointer to a virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @retry: number of retries to the command IOCB.
*
* This routine issues an Address Discover (ADISC) for an @ndlp on a
* @vport. It prepares the payload of the ADISC ELS command, updates the
* and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
* to issue the ADISC ELS command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the ADISC ELS command.
*
* Return code
* 0 - successfully issued adisc
* 1 - failed to issue adisc
**/
int
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
ADISC *ap;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ADISC);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For ADISC request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
pcmd += sizeof(uint32_t);
/* Fill in ADISC payload */
ap = (ADISC *) pcmd;
ap->hardAL_PA = phba->fc_pref_ALPA;
memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
ap->DID = be32_to_cpu(vport->fc_myDID);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue ADISC: did:x%x",
ndlp->nlp_DID, 0, 0);
phba->fc_stat.elsXmitADISC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_ADISC_SND;
spin_unlock_irq(shost->host_lock);
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_ADISC_SND;
spin_unlock_irq(shost->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_cmpl_els_logo - Completion callback function for logo
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion function for issuing the ELS Logout (LOGO)
* command. If no error status was reported from the LOGO response, the
* state machine of the associated ndlp shall be invoked for transition with
* respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
* the lpfc_els_retry() routine will be invoked to retry the LOGO command.
**/
static void
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
struct lpfc_vport *vport = ndlp->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp;
struct lpfcMboxq *mbox;
unsigned long flags;
uint32_t skip_recovery = 0;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &(rspiocb->iocb);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_LOGO_SND;
spin_unlock_irq(shost->host_lock);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"LOGO cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
ndlp->nlp_DID);
/* LOGO completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0105 LOGO completes to NPort x%x "
"Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, vport->num_disc_nodes);
if (lpfc_els_chk_latt(vport)) {
skip_recovery = 1;
goto out;
}
/* Check to see if link went down during discovery */
if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
/* NLP_EVT_DEVICE_RM should unregister the RPI
* which should abort all outstanding IOs.
*/
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
skip_recovery = 1;
goto out;
}
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
skip_recovery = 1;
goto out;
}
/* LOGO failed */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2756 LOGO failure DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4]);
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if (lpfc_error_lost_link(irsp)) {
skip_recovery = 1;
goto out;
}
}
/* Call state machine. This will unregister the rpi if needed. */
lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
out:
lpfc_els_free_iocb(phba, cmdiocb);
/* If we are in pt2pt mode, we could rcv new S_ID on PLOGI */
if ((vport->fc_flag & FC_PT2PT) &&
!(vport->fc_flag & FC_PT2PT_PLOGI)) {
phba->pport->fc_myDID = 0;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
skip_recovery = 1;
}
}
}
/*
* If the node is a target, the handling attempts to recover the port.
* For any other port type, the rpi is unregistered as an implicit
* LOGO.
*/
if ((ndlp->nlp_type & NLP_FCP_TARGET) && (skip_recovery == 0)) {
lpfc_cancel_retry_delay_tmo(vport, ndlp);
spin_lock_irqsave(shost->host_lock, flags);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irqrestore(shost->host_lock, flags);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3187 LOGO completes to NPort x%x: Start "
"Recovery Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4], irsp->ulpTimeout,
vport->num_disc_nodes);
lpfc_disc_start(vport);
}
return;
}
/**
* lpfc_issue_els_logo - Issue a logo to an node on a vport
* @vport: pointer to a virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @retry: number of retries to the command IOCB.
*
* This routine constructs and issues an ELS Logout (LOGO) iocb command
* to a remote node, referred by an @ndlp on a @vport. It constructs the
* payload of the IOCB, properly sets up the @ndlp state, and invokes the
* lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the LOGO ELS command.
*
* Return code
* 0 - successfully issued logo
* 1 - failed to issue logo
**/
int
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
spin_lock_irq(shost->host_lock);
if (ndlp->nlp_flag & NLP_LOGO_SND) {
spin_unlock_irq(shost->host_lock);
return 0;
}
spin_unlock_irq(shost->host_lock);
cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_LOGO);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
pcmd += sizeof(uint32_t);
/* Fill in LOGO payload */
*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue LOGO: did:x%x",
ndlp->nlp_DID, 0, 0);
/*
* If we are issuing a LOGO, we may try to recover the remote NPort
* by issuing a PLOGI later. Even though we issue ELS cmds by the
* VPI, if we have a valid RPI, and that RPI gets unreg'ed while
* that ELS command is in-flight, the HBA returns a IOERR_INVALID_RPI
* for that ELS cmd. To avoid this situation, lets get rid of the
* RPI right now, before any ELS cmds are sent.
*/
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_ISSUE_LOGO;
spin_unlock_irq(shost->host_lock);
if (lpfc_unreg_rpi(vport, ndlp)) {
lpfc_els_free_iocb(phba, elsiocb);
return 0;
}
phba->fc_stat.elsXmitLOGO++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_LOGO_SND;
ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
spin_unlock_irq(shost->host_lock);
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_LOGO_SND;
spin_unlock_irq(shost->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_cmpl_els_cmd - Completion callback function for generic els command
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is a generic completion callback function for ELS commands.
* Specifically, it is the callback function which does not need to perform
* any command specific operations. It is currently used by the ELS command
* issuing routines for the ELS State Change Request (SCR),
* lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
* Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
* certain debug loggings, this callback function simply invokes the
* lpfc_els_chk_latt() routine to check whether link went down during the
* discovery process.
**/
static void
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp;
irsp = &rspiocb->iocb;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"ELS cmd cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->un.elsreq64.remoteID);
/* ELS cmd tag <ulpIoTag> completes */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
irsp->ulpIoTag, irsp->ulpStatus,
irsp->un.ulpWord[4], irsp->ulpTimeout);
/* Check to see if link went down during discovery */
lpfc_els_chk_latt(vport);
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_issue_els_scr - Issue a scr to an node on a vport
* @vport: pointer to a host virtual N_Port data structure.
* @nportid: N_Port identifier to the remote node.
* @retry: number of retries to the command IOCB.
*
* This routine issues a State Change Request (SCR) to a fabric node
* on a @vport. The remote node @nportid is passed into the function. It
* first search the @vport node list to find the matching ndlp. If no such
* ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
* IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
* routine is invoked to send the SCR IOCB.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the SCR ELS command.
*
* Return code
* 0 - Successfully issued scr command
* 1 - Failed to issue scr command
**/
int
lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
struct lpfc_nodelist *ndlp;
cmdsize = (sizeof(uint32_t) + sizeof(SCR));
ndlp = lpfc_findnode_did(vport, nportid);
if (!ndlp) {
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
return 1;
lpfc_nlp_init(vport, ndlp, nportid);
lpfc_enqueue_node(vport, ndlp);
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
if (!ndlp)
return 1;
}
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_SCR);
if (!elsiocb) {
/* This will trigger the release of the node just
* allocated
*/
lpfc_nlp_put(ndlp);
return 1;
}
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
pcmd += sizeof(uint32_t);
/* For SCR, remainder of payload is SCR parameter page */
memset(pcmd, 0, sizeof(SCR));
((SCR *) pcmd)->Function = SCR_FUNC_FULL;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue SCR: did:x%x",
ndlp->nlp_DID, 0, 0);
phba->fc_stat.elsXmitSCR++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
/* The additional lpfc_nlp_put will cause the following
* lpfc_els_free_iocb routine to trigger the rlease of
* the node.
*/
lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
/* This will cause the callback-function lpfc_cmpl_els_cmd to
* trigger the release of node.
*/
lpfc_nlp_put(ndlp);
return 0;
}
/**
* lpfc_issue_els_farpr - Issue a farp to an node on a vport
* @vport: pointer to a host virtual N_Port data structure.
* @nportid: N_Port identifier to the remote node.
* @retry: number of retries to the command IOCB.
*
* This routine issues a Fibre Channel Address Resolution Response
* (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
* is passed into the function. It first search the @vport node list to find
* the matching ndlp. If no such ndlp is found, a new ndlp shall be created
* for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
* lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the PARPR ELS command.
*
* Return code
* 0 - Successfully issued farpr command
* 1 - Failed to issue farpr command
**/
static int
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
FARP *fp;
uint8_t *pcmd;
uint32_t *lp;
uint16_t cmdsize;
struct lpfc_nodelist *ondlp;
struct lpfc_nodelist *ndlp;
cmdsize = (sizeof(uint32_t) + sizeof(FARP));
ndlp = lpfc_findnode_did(vport, nportid);
if (!ndlp) {
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
return 1;
lpfc_nlp_init(vport, ndlp, nportid);
lpfc_enqueue_node(vport, ndlp);
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
if (!ndlp)
return 1;
}
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_RNID);
if (!elsiocb) {
/* This will trigger the release of the node just
* allocated
*/
lpfc_nlp_put(ndlp);
return 1;
}
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
pcmd += sizeof(uint32_t);
/* Fill in FARPR payload */
fp = (FARP *) (pcmd);
memset(fp, 0, sizeof(FARP));
lp = (uint32_t *) pcmd;
*lp++ = be32_to_cpu(nportid);
*lp++ = be32_to_cpu(vport->fc_myDID);
fp->Rflags = 0;
fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
ondlp = lpfc_findnode_did(vport, nportid);
if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
memcpy(&fp->OportName, &ondlp->nlp_portname,
sizeof(struct lpfc_name));
memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
sizeof(struct lpfc_name));
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue FARPR: did:x%x",
ndlp->nlp_DID, 0, 0);
phba->fc_stat.elsXmitFARPR++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
/* The additional lpfc_nlp_put will cause the following
* lpfc_els_free_iocb routine to trigger the release of
* the node.
*/
lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
/* This will cause the callback-function lpfc_cmpl_els_cmd to
* trigger the release of the node.
*/
lpfc_nlp_put(ndlp);
return 0;
}
/**
* lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
* @vport: pointer to a host virtual N_Port data structure.
* @nlp: pointer to a node-list data structure.
*
* This routine cancels the timer with a delayed IOCB-command retry for
* a @vport's @ndlp. It stops the timer for the delayed function retrial and
* removes the ELS retry event if it presents. In addition, if the
* NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
* commands are sent for the @vport's nodes that require issuing discovery
* ADISC.
**/
void
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_work_evt *evtp;
if (!(nlp->nlp_flag & NLP_DELAY_TMO))
return;
spin_lock_irq(shost->host_lock);
nlp->nlp_flag &= ~NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
del_timer_sync(&nlp->nlp_delayfunc);
nlp->nlp_last_elscmd = 0;
if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
list_del_init(&nlp->els_retry_evt.evt_listp);
/* Decrement nlp reference count held for the delayed retry */
evtp = &nlp->els_retry_evt;
lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
}
if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
spin_lock_irq(shost->host_lock);
nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
if (vport->num_disc_nodes) {
if (vport->port_state < LPFC_VPORT_READY) {
/* Check if there are more ADISCs to be sent */
lpfc_more_adisc(vport);
} else {
/* Check if there are more PLOGIs to be sent */
lpfc_more_plogi(vport);
if (vport->num_disc_nodes == 0) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
}
}
return;
}
/**
* lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
* @ptr: holder for the pointer to the timer function associated data (ndlp).
*
* This routine is invoked by the ndlp delayed-function timer to check
* whether there is any pending ELS retry event(s) with the node. If not, it
* simply returns. Otherwise, if there is at least one ELS delayed event, it
* adds the delayed events to the HBA work list and invokes the
* lpfc_worker_wake_up() routine to wake up worker thread to process the
* event. Note that lpfc_nlp_get() is called before posting the event to
* the work list to hold reference count of ndlp so that it guarantees the
* reference to ndlp will still be available when the worker thread gets
* to the event associated with the ndlp.
**/
void
lpfc_els_retry_delay(unsigned long ptr)
{
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
struct lpfc_vport *vport = ndlp->vport;
struct lpfc_hba *phba = vport->phba;
unsigned long flags;
struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
spin_lock_irqsave(&phba->hbalock, flags);
if (!list_empty(&evtp->evt_listp)) {
spin_unlock_irqrestore(&phba->hbalock, flags);
return;
}
/* We need to hold the node by incrementing the reference
* count until the queued work is done
*/
evtp->evt_arg1 = lpfc_nlp_get(ndlp);
if (evtp->evt_arg1) {
evtp->evt = LPFC_EVT_ELS_RETRY;
list_add_tail(&evtp->evt_listp, &phba->work_list);
lpfc_worker_wake_up(phba);
}
spin_unlock_irqrestore(&phba->hbalock, flags);
return;
}
/**
* lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
* @ndlp: pointer to a node-list data structure.
*
* This routine is the worker-thread handler for processing the @ndlp delayed
* event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
* the last ELS command from the associated ndlp and invokes the proper ELS
* function according to the delayed ELS command to retry the command.
**/
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
struct lpfc_vport *vport = ndlp->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
uint32_t cmd, retry;
spin_lock_irq(shost->host_lock);
cmd = ndlp->nlp_last_elscmd;
ndlp->nlp_last_elscmd = 0;
if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
spin_unlock_irq(shost->host_lock);
return;
}
ndlp->nlp_flag &= ~NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
/*
* If a discovery event readded nlp_delayfunc after timer
* firing and before processing the timer, cancel the
* nlp_delayfunc.
*/
del_timer_sync(&ndlp->nlp_delayfunc);
retry = ndlp->nlp_retry;
ndlp->nlp_retry = 0;
switch (cmd) {
case ELS_CMD_FLOGI:
lpfc_issue_els_flogi(vport, ndlp, retry);
break;
case ELS_CMD_PLOGI:
if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
}
break;
case ELS_CMD_ADISC:
if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
}
break;
case ELS_CMD_PRLI:
if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
}
break;
case ELS_CMD_LOGO:
if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
}
break;
case ELS_CMD_FDISC:
if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
lpfc_issue_els_fdisc(vport, ndlp, retry);
break;
}
return;
}
/**
* lpfc_els_retry - Make retry decision on an els command iocb
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine makes a retry decision on an ELS command IOCB, which has
* failed. The following ELS IOCBs use this function for retrying the command
* when previously issued command responsed with error status: FLOGI, PLOGI,
* PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
* returned error status, it makes the decision whether a retry shall be
* issued for the command, and whether a retry shall be made immediately or
* delayed. In the former case, the corresponding ELS command issuing-function
* is called to retry the command. In the later case, the ELS command shall
* be posted to the ndlp delayed event and delayed function timer set to the
* ndlp for the delayed command issusing.
*
* Return code
* 0 - No retry of els command is made
* 1 - Immediate or delayed retry of els command is made
**/
static int
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp = &rspiocb->iocb;
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
uint32_t *elscmd;
struct ls_rjt stat;
int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
int logerr = 0;
uint32_t cmd = 0;
uint32_t did;
/* Note: context2 may be 0 for internal driver abort
* of delays ELS command.
*/
if (pcmd && pcmd->virt) {
elscmd = (uint32_t *) (pcmd->virt);
cmd = *elscmd++;
}
if (ndlp && NLP_CHK_NODE_ACT(ndlp))
did = ndlp->nlp_DID;
else {
/* We should only hit this case for retrying PLOGI */
did = irsp->un.elsreq64.remoteID;
ndlp = lpfc_findnode_did(vport, did);
if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
&& (cmd != ELS_CMD_PLOGI))
return 1;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Retry ELS: wd7:x%x wd4:x%x did:x%x",
*(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
switch (irsp->ulpStatus) {
case IOSTAT_FCP_RSP_ERROR:
break;
case IOSTAT_REMOTE_STOP:
if (phba->sli_rev == LPFC_SLI_REV4) {
/* This IO was aborted by the target, we don't
* know the rxid and because we did not send the
* ABTS we cannot generate and RRQ.
*/
lpfc_set_rrq_active(phba, ndlp,
cmdiocb->sli4_lxritag, 0, 0);
}
break;
case IOSTAT_LOCAL_REJECT:
switch ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK)) {
case IOERR_LOOP_OPEN_FAILURE:
if (cmd == ELS_CMD_FLOGI) {
if (PCI_DEVICE_ID_HORNET ==
phba->pcidev->device) {
phba->fc_topology = LPFC_TOPOLOGY_LOOP;
phba->pport->fc_myDID = 0;
phba->alpa_map[0] = 0;
phba->alpa_map[1] = 0;
}
}
if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
delay = 1000;
retry = 1;
break;
case IOERR_ILLEGAL_COMMAND:
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0124 Retry illegal cmd x%x "
"retry:x%x delay:x%x\n",
cmd, cmdiocb->retry, delay);
retry = 1;
/* All command's retry policy */
maxretry = 8;
if (cmdiocb->retry > 2)
delay = 1000;
break;
case IOERR_NO_RESOURCES:
logerr = 1; /* HBA out of resources */
retry = 1;
if (cmdiocb->retry > 100)
delay = 100;
maxretry = 250;
break;
case IOERR_ILLEGAL_FRAME:
delay = 100;
retry = 1;
break;
case IOERR_SEQUENCE_TIMEOUT:
case IOERR_INVALID_RPI:
if (cmd == ELS_CMD_PLOGI &&
did == NameServer_DID) {
/* Continue forever if plogi to */
/* the nameserver fails */
maxretry = 0;
delay = 100;
}
retry = 1;
break;
}
break;
case IOSTAT_NPORT_RJT:
case IOSTAT_FABRIC_RJT:
if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
retry = 1;
break;
}
break;
case IOSTAT_NPORT_BSY:
case IOSTAT_FABRIC_BSY:
logerr = 1; /* Fabric / Remote NPort out of resources */
retry = 1;
break;
case IOSTAT_LS_RJT:
stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
/* Added for Vendor specifc support
* Just keep retrying for these Rsn / Exp codes
*/
switch (stat.un.b.lsRjtRsnCode) {
case LSRJT_UNABLE_TPC:
if (stat.un.b.lsRjtRsnCodeExp ==
LSEXP_CMD_IN_PROGRESS) {
if (cmd == ELS_CMD_PLOGI) {
delay = 1000;
maxretry = 48;
}
retry = 1;
break;
}
if (stat.un.b.lsRjtRsnCodeExp ==
LSEXP_CANT_GIVE_DATA) {
if (cmd == ELS_CMD_PLOGI) {
delay = 1000;
maxretry = 48;
}
retry = 1;
break;
}
if ((cmd == ELS_CMD_PLOGI) ||
(cmd == ELS_CMD_PRLI)) {
delay = 1000;
maxretry = lpfc_max_els_tries + 1;
retry = 1;
break;
}
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(cmd == ELS_CMD_FDISC) &&
(stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0125 FDISC Failed (x%x). "
"Fabric out of resources\n",
stat.un.lsRjtError);
lpfc_vport_set_state(vport,
FC_VPORT_NO_FABRIC_RSCS);
}
break;
case LSRJT_LOGICAL_BSY:
if ((cmd == ELS_CMD_PLOGI) ||
(cmd == ELS_CMD_PRLI)) {
delay = 1000;
maxretry = 48;
} else if (cmd == ELS_CMD_FDISC) {
/* FDISC retry policy */
maxretry = 48;
if (cmdiocb->retry >= 32)
delay = 1000;
}
retry = 1;
break;
case LSRJT_LOGICAL_ERR:
/* There are some cases where switches return this
* error when they are not ready and should be returning
* Logical Busy. We should delay every time.
*/
if (cmd == ELS_CMD_FDISC &&
stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
maxretry = 3;
delay = 1000;
retry = 1;
break;
}
case LSRJT_PROTOCOL_ERR:
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(cmd == ELS_CMD_FDISC) &&
((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
(stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0122 FDISC Failed (x%x). "
"Fabric Detected Bad WWN\n",
stat.un.lsRjtError);
lpfc_vport_set_state(vport,
FC_VPORT_FABRIC_REJ_WWN);
}
break;
}
break;
case IOSTAT_INTERMED_RSP:
case IOSTAT_BA_RJT:
break;
default:
break;
}
if (did == FDMI_DID)
retry = 1;
if ((cmd == ELS_CMD_FLOGI) &&
(phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
!lpfc_error_lost_link(irsp)) {
/* FLOGI retry policy */
retry = 1;
/* retry FLOGI forever */
if (phba->link_flag != LS_LOOPBACK_MODE)
maxretry = 0;
else
maxretry = 2;
if (cmdiocb->retry >= 100)
delay = 5000;
else if (cmdiocb->retry >= 32)
delay = 1000;
} else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) {
/* retry FDISCs every second up to devloss */
retry = 1;
maxretry = vport->cfg_devloss_tmo;
delay = 1000;
}
cmdiocb->retry++;
if (maxretry && (cmdiocb->retry >= maxretry)) {
phba->fc_stat.elsRetryExceeded++;
retry = 0;
}
if ((vport->load_flag & FC_UNLOADING) != 0)
retry = 0;
if (retry) {
if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
/* Stop retrying PLOGI and FDISC if in FCF discovery */
if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2849 Stop retry ELS command "
"x%x to remote NPORT x%x, "
"Data: x%x x%x\n", cmd, did,
cmdiocb->retry, delay);
return 0;
}
}
/* Retry ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0107 Retry ELS command x%x to remote "
"NPORT x%x Data: x%x x%x\n",
cmd, did, cmdiocb->retry, delay);
if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
IOERR_NO_RESOURCES))) {
/* Don't reset timer for no resources */
/* If discovery / RSCN timer is running, reset it */
if (timer_pending(&vport->fc_disctmo) ||
(vport->fc_flag & FC_RSCN_MODE))
lpfc_set_disctmo(vport);
}
phba->fc_stat.elsXmitRetry++;
if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
phba->fc_stat.elsDelayRetry++;
ndlp->nlp_retry = cmdiocb->retry;
/* delay is specified in milliseconds */
mod_timer(&ndlp->nlp_delayfunc,
jiffies + msecs_to_jiffies(delay));
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_prev_state = ndlp->nlp_state;
if (cmd == ELS_CMD_PRLI)
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PRLI_ISSUE);
else
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_NPR_NODE);
ndlp->nlp_last_elscmd = cmd;
return 1;
}
switch (cmd) {
case ELS_CMD_FLOGI:
lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
return 1;
case ELS_CMD_FDISC:
lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
return 1;
case ELS_CMD_PLOGI:
if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PLOGI_ISSUE);
}
lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
return 1;
case ELS_CMD_ADISC:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
return 1;
case ELS_CMD_PRLI:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
return 1;
case ELS_CMD_LOGO:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
return 1;
}
}
/* No retry ELS command <elsCmd> to remote NPORT <did> */
if (logerr) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0137 No retry ELS command x%x to remote "
"NPORT x%x: Out of Resources: Error:x%x/%x\n",
cmd, did, irsp->ulpStatus,
irsp->un.ulpWord[4]);
}
else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0108 No retry ELS command x%x to remote "
"NPORT x%x Retried:%d Error:x%x/%x\n",
cmd, did, cmdiocb->retry, irsp->ulpStatus,
irsp->un.ulpWord[4]);
}
return 0;
}
/**
* lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
* @phba: pointer to lpfc hba data structure.
* @buf_ptr1: pointer to the lpfc DMA buffer data structure.
*
* This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
* associated with a command IOCB back to the lpfc DMA buffer pool. It first
* checks to see whether there is a lpfc DMA buffer associated with the
* response of the command IOCB. If so, it will be released before releasing
* the lpfc DMA buffer associated with the IOCB itself.
*
* Return code
* 0 - Successfully released lpfc DMA buffer (currently, always return 0)
**/
static int
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{
struct lpfc_dmabuf *buf_ptr;
/* Free the response before processing the command. */
if (!list_empty(&buf_ptr1->list)) {
list_remove_head(&buf_ptr1->list, buf_ptr,
struct lpfc_dmabuf,
list);
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
kfree(buf_ptr1);
return 0;
}
/**
* lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
* @phba: pointer to lpfc hba data structure.
* @buf_ptr: pointer to the lpfc dma buffer data structure.
*
* This routine releases the lpfc Direct Memory Access (DMA) buffer
* associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
* pool.
*
* Return code
* 0 - Successfully released lpfc DMA buffer (currently, always return 0)
**/
static int
lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
{
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
return 0;
}
/**
* lpfc_els_free_iocb - Free a command iocb and its associated resources
* @phba: pointer to lpfc hba data structure.
* @elsiocb: pointer to lpfc els command iocb data structure.
*
* This routine frees a command IOCB and its associated resources. The
* command IOCB data structure contains the reference to various associated
* resources, these fields must be set to NULL if the associated reference
* not present:
* context1 - reference to ndlp
* context2 - reference to cmd
* context2->next - reference to rsp
* context3 - reference to bpl
*
* It first properly decrements the reference count held on ndlp for the
* IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
* set, it invokes the lpfc_els_free_data() routine to release the Direct
* Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
* adds the DMA buffer the @phba data structure for the delayed release.
* If reference to the Buffer Pointer List (BPL) is present, the
* lpfc_els_free_bpl() routine is invoked to release the DMA memory
* associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
* invoked to release the IOCB data structure back to @phba IOCBQ list.
*
* Return code
* 0 - Success (currently, always return 0)
**/
int
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
{
struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
struct lpfc_nodelist *ndlp;
ndlp = (struct lpfc_nodelist *)elsiocb->context1;
if (ndlp) {
if (ndlp->nlp_flag & NLP_DEFER_RM) {
lpfc_nlp_put(ndlp);
/* If the ndlp is not being used by another discovery
* thread, free it.
*/
if (!lpfc_nlp_not_used(ndlp)) {
/* If ndlp is being used by another discovery
* thread, just clear NLP_DEFER_RM
*/
ndlp->nlp_flag &= ~NLP_DEFER_RM;
}
}
else
lpfc_nlp_put(ndlp);
elsiocb->context1 = NULL;
}
/* context2 = cmd, context2->next = rsp, context3 = bpl */
if (elsiocb->context2) {
if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
/* Firmware could still be in progress of DMAing
* payload, so don't free data buffer till after
* a hbeat.
*/
elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
buf_ptr = elsiocb->context2;
elsiocb->context2 = NULL;
if (buf_ptr) {
buf_ptr1 = NULL;
spin_lock_irq(&phba->hbalock);
if (!list_empty(&buf_ptr->list)) {
list_remove_head(&buf_ptr->list,
buf_ptr1, struct lpfc_dmabuf,
list);
INIT_LIST_HEAD(&buf_ptr1->list);
list_add_tail(&buf_ptr1->list,
&phba->elsbuf);
phba->elsbuf_cnt++;
}
INIT_LIST_HEAD(&buf_ptr->list);
list_add_tail(&buf_ptr->list, &phba->elsbuf);
phba->elsbuf_cnt++;
spin_unlock_irq(&phba->hbalock);
}
} else {
buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
lpfc_els_free_data(phba, buf_ptr1);
}
}
if (elsiocb->context3) {
buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
lpfc_els_free_bpl(phba, buf_ptr);
}
lpfc_sli_release_iocbq(phba, elsiocb);
return 0;
}
/**
* lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion callback function to the Logout (LOGO)
* Accept (ACC) Response ELS command. This routine is invoked to indicate
* the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
* release the ndlp if it has the last reference remaining (reference count
* is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
* field to NULL to inform the following lpfc_els_free_iocb() routine no
* ndlp reference count needs to be decremented. Otherwise, the ndlp
* reference use-count shall be decremented by the lpfc_els_free_iocb()
* routine. Finally, the lpfc_els_free_iocb() is invoked to release the
* IOCB data structure.
**/
static void
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp;
irsp = &rspiocb->iocb;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"ACC LOGO cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
/* ACC to LOGO completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0109 ACC to LOGO completes to NPort x%x "
"Data: x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
/* NPort Recovery mode or node is just allocated */
if (!lpfc_nlp_not_used(ndlp)) {
/* If the ndlp is being used by another discovery
* thread, just unregister the RPI.
*/
lpfc_unreg_rpi(vport, ndlp);
} else {
/* Indicate the node has already released, should
* not reference to it from within lpfc_els_free_iocb.
*/
cmdiocb->context1 = NULL;
}
}
/*
* The driver received a LOGO from the rport and has ACK'd it.
* At this point, the driver is done so release the IOCB
*/
lpfc_els_free_iocb(phba, cmdiocb);
}
/**
* lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function for unregister default
* RPI (Remote Port Index) mailbox command to the @phba. It simply releases
* the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
* decrements the ndlp reference count held for this completion callback
* function. After that, it invokes the lpfc_nlp_not_used() to check
* whether there is only one reference left on the ndlp. If so, it will
* perform one more decrement and trigger the release of the ndlp.
**/
void
lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
pmb->context1 = NULL;
pmb->context2 = NULL;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
if (ndlp) {
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
"0006 rpi%x DID:%x flg:%x %d map:%x %p\n",
ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
atomic_read(&ndlp->kref.refcount),
ndlp->nlp_usg_map, ndlp);
if (NLP_CHK_NODE_ACT(ndlp)) {
lpfc_nlp_put(ndlp);
/* This is the end of the default RPI cleanup logic for
* this ndlp. If no other discovery threads are using
* this ndlp, free all resources associated with it.
*/
lpfc_nlp_not_used(ndlp);
} else {
lpfc_drop_node(ndlp->vport, ndlp);
}
}
return;
}
/**
* lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion callback function for ELS Response IOCB
* command. In normal case, this callback function just properly sets the
* nlp_flag bitmap in the ndlp data structure, if the mbox command reference
* field in the command IOCB is not NULL, the referred mailbox command will
* be send out, and then invokes the lpfc_els_free_iocb() routine to release
* the IOCB. Under error conditions, such as when a LS_RJT is returned or a
* link down event occurred during the discovery, the lpfc_nlp_not_used()
* routine shall be invoked trying to release the ndlp if no other threads
* are currently referring it.
**/
static void
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
IOCB_t *irsp;
uint8_t *pcmd;
LPFC_MBOXQ_t *mbox = NULL;
struct lpfc_dmabuf *mp = NULL;
uint32_t ls_rjt = 0;
irsp = &rspiocb->iocb;
if (cmdiocb->context_un.mbox)
mbox = cmdiocb->context_un.mbox;
/* First determine if this is a LS_RJT cmpl. Note, this callback
* function can have cmdiocb->contest1 (ndlp) field set to NULL.
*/
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
(*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
/* A LS_RJT associated with Default RPI cleanup has its own
* separate code path.
*/
if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
ls_rjt = 1;
}
/* Check to see if link went down during discovery */
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
if (mbox) {
mp = (struct lpfc_dmabuf *) mbox->context1;
if (mp) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
mempool_free(mbox, phba->mbox_mem_pool);
}
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
if (lpfc_nlp_not_used(ndlp)) {
ndlp = NULL;
/* Indicate the node has already released,
* should not reference to it from within
* the routine lpfc_els_free_iocb.
*/
cmdiocb->context1 = NULL;
}
goto out;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"ELS rsp cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4],
cmdiocb->iocb.un.elsreq64.remoteID);
/* ELS response tag <ulpIoTag> completes */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0110 ELS response tag x%x completes "
"Data: x%x x%x x%x x%x x%x x%x x%x\n",
cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
if (mbox) {
if ((rspiocb->iocb.ulpStatus == 0)
&& (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
lpfc_unreg_rpi(vport, ndlp);
/* Increment reference count to ndlp to hold the
* reference to ndlp for the callback function.
*/
mbox->context2 = lpfc_nlp_get(ndlp);
mbox->vport = vport;
if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
}
else {
mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_REG_LOGIN_ISSUE);
}
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
!= MBX_NOT_FINISHED)
goto out;
else
/* Decrement the ndlp reference count we
* set for this failed mailbox command.
*/
lpfc_nlp_put(ndlp);
/* ELS rsp: Cannot issue reg_login for <NPortid> */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0138 ELS rsp: Cannot issue reg_login for x%x "
"Data: x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
if (lpfc_nlp_not_used(ndlp)) {
ndlp = NULL;
/* Indicate node has already been released,
* should not reference to it from within
* the routine lpfc_els_free_iocb.
*/
cmdiocb->context1 = NULL;
}
} else {
/* Do not drop node for lpfc_els_abort'ed ELS cmds */
if (!lpfc_error_lost_link(irsp) &&
ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
if (lpfc_nlp_not_used(ndlp)) {
ndlp = NULL;
/* Indicate node has already been
* released, should not reference
* to it from within the routine
* lpfc_els_free_iocb.
*/
cmdiocb->context1 = NULL;
}
}
}
mp = (struct lpfc_dmabuf *) mbox->context1;
if (mp) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
mempool_free(mbox, phba->mbox_mem_pool);
}
out:
if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
spin_unlock_irq(shost->host_lock);
/* If the node is not being used by another discovery thread,
* and we are sending a reject, we are done with it.
* Release driver reference count here and free associated
* resources.
*/
if (ls_rjt)
if (lpfc_nlp_not_used(ndlp))
/* Indicate node has already been released,
* should not reference to it from within
* the routine lpfc_els_free_iocb.
*/
cmdiocb->context1 = NULL;
}
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
* @vport: pointer to a host virtual N_Port data structure.
* @flag: the els command code to be accepted.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
* @mbox: pointer to the driver internal queue element for mailbox command.
*
* This routine prepares and issues an Accept (ACC) response IOCB
* command. It uses the @flag to properly set up the IOCB field for the
* specific ACC response command to be issued and invokes the
* lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
* @mbox pointer is passed in, it will be put into the context_un.mbox
* field of the IOCB for the completion callback function to issue the
* mailbox command to the HBA later when callback is invoked.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the corresponding response ELS IOCB command.
*
* Return code
* 0 - Successfully issued acc response
* 1 - Failed to issue acc response
**/
int
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
LPFC_MBOXQ_t *mbox)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
ELS_PKT *els_pkt_ptr;
oldcmd = &oldiocb->iocb;
switch (flag) {
case ELS_CMD_ACC:
cmdsize = sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_LOGO_ACC;
spin_unlock_irq(shost->host_lock);
return 1;
}
icmd = &elsiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
break;
case ELS_CMD_PLOGI:
cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
if (mbox)
elsiocb->context_un.mbox = mbox;
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC PLOGI: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
break;
case ELS_CMD_PRLO:
cmdsize = sizeof(uint32_t) + sizeof(PRLO);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
sizeof(uint32_t) + sizeof(PRLO));
*((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
els_pkt_ptr = (ELS_PKT *) pcmd;
els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC PRLO: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
break;
default:
return 1;
}
/* Xmit ELS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
"DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x "
"fc_flag x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi, vport->fc_flag);
if (ndlp->nlp_flag & NLP_LOGO_ACC) {
spin_lock_irq(shost->host_lock);
if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED ||
ndlp->nlp_flag & NLP_REG_LOGIN_SEND))
ndlp->nlp_flag &= ~NLP_LOGO_ACC;
spin_unlock_irq(shost->host_lock);
elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
} else {
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
}
phba->fc_stat.elsXmitACC++;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
* @vport: pointer to a virtual N_Port data structure.
* @rejectError:
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
* @mbox: pointer to the driver internal queue element for mailbox command.
*
* This routine prepares and issue an Reject (RJT) response IOCB
* command. If a @mbox pointer is passed in, it will be put into the
* context_un.mbox field of the IOCB for the completion callback function
* to issue to the HBA later.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the reject response ELS IOCB command.
*
* Return code
* 0 - Successfully issued reject response
* 1 - Failed to issue reject response
**/
int
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
LPFC_MBOXQ_t *mbox)
{
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
cmdsize = 2 * sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_LS_RJT);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
pcmd += sizeof(uint32_t);
*((uint32_t *) (pcmd)) = rejectError;
if (mbox)
elsiocb->context_un.mbox = mbox;
/* Xmit ELS RJT <err> response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0129 Xmit ELS RJT x%x response tag x%x "
"xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
"rpi x%x\n",
rejectError, elsiocb->iotag,
elsiocb->iocb.ulpContext, ndlp->nlp_DID,
ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue LS_RJT: did:x%x flg:x%x err:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
phba->fc_stat.elsXmitLSRJT++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
* @vport: pointer to a virtual N_Port data structure.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine prepares and issues an Accept (ACC) response to Address
* Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
* and invokes the lpfc_sli_issue_iocb() routine to send out the command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the ADISC Accept response ELS IOCB command.
*
* Return code
* 0 - Successfully issued acc adisc response
* 1 - Failed to issue adisc acc response
**/
int
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
ADISC *ap;
IOCB_t *icmd, *oldcmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
cmdsize = sizeof(uint32_t) + sizeof(ADISC);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
/* Xmit ADISC ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0130 Xmit ADISC ACC response iotag x%x xri: "
"x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t);
ap = (ADISC *) (pcmd);
ap->hardAL_PA = phba->fc_pref_ALPA;
memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
ap->DID = be32_to_cpu(vport->fc_myDID);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC ADISC: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
* @vport: pointer to a virtual N_Port data structure.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine prepares and issues an Accept (ACC) response to Process
* Login (PRLI) ELS command. It simply prepares the payload of the IOCB
* and invokes the lpfc_sli_issue_iocb() routine to send out the command.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the PRLI Accept response ELS IOCB command.
*
* Return code
* 0 - Successfully issued acc prli response
* 1 - Failed to issue acc prli response
**/
int
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
PRLI *npr;
lpfc_vpd_t *vpd;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
cmdsize = sizeof(uint32_t) + sizeof(PRLI);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
/* Xmit PRLI ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0131 Xmit PRLI ACC response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
pcmd += sizeof(uint32_t);
/* For PRLI, remainder of payload is PRLI parameter page */
memset(pcmd, 0, sizeof(PRLI));
npr = (PRLI *) pcmd;
vpd = &phba->vpd;
/*
* If the remote port is a target and our firmware version is 3.20 or
* later, set the following bits for FC-TAPE support.
*/
if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
(vpd->rev.feaLevelHigh >= 0x02)) {
npr->ConfmComplAllowed = 1;
npr->Retry = 1;
npr->TaskRetryIdReq = 1;
}
npr->acceptRspCode = PRLI_REQ_EXECUTED;
npr->estabImagePair = 1;
npr->readXferRdyDis = 1;
npr->ConfmComplAllowed = 1;
npr->prliType = PRLI_FCP_TYPE;
npr->initiatorFunc = 1;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC PRLI: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
* @vport: pointer to a virtual N_Port data structure.
* @format: rnid command format.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine issues a Request Node Identification Data (RNID) Accept
* (ACC) response. It constructs the RNID ACC response command according to
* the proper @format and then calls the lpfc_sli_issue_iocb() routine to
* issue the response. Note that this command does not need to hold the ndlp
* reference count for the callback. So, the ndlp reference count taken by
* the lpfc_prep_els_iocb() routine is put back and the context1 field of
* IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
* there is no ndlp reference available.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function. However, for the RNID Accept Response ELS command,
* this is undone later by this routine after the IOCB is allocated.
*
* Return code
* 0 - Successfully issued acc rnid response
* 1 - Failed to issue acc rnid response
**/
static int
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
RNID *rn;
IOCB_t *icmd, *oldcmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
+ (2 * sizeof(struct lpfc_name));
if (format)
cmdsize += sizeof(RNID_TOP_DISC);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
/* Xmit RNID ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0132 Xmit RNID ACC response tag x%x xri x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext);
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t);
memset(pcmd, 0, sizeof(RNID));
rn = (RNID *) (pcmd);
rn->Format = format;
rn->CommonLen = (2 * sizeof(struct lpfc_name));
memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
switch (format) {
case 0:
rn->SpecificLen = 0;
break;
case RNID_TOPOLOGY_DISC:
rn->SpecificLen = sizeof(RNID_TOP_DISC);
memcpy(&rn->un.topologyDisc.portName,
&vport->fc_portname, sizeof(struct lpfc_name));
rn->un.topologyDisc.unitType = RNID_HBA;
rn->un.topologyDisc.physPort = 0;
rn->un.topologyDisc.attachedNodes = 0;
break;
default:
rn->CommonLen = 0;
rn->SpecificLen = 0;
break;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC RNID: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_clear_rrq - Clear the rq that this rrq describes.
* @vport: pointer to a virtual N_Port data structure.
* @iocb: pointer to the lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* Return
**/
static void
lpfc_els_clear_rrq(struct lpfc_vport *vport,
struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
uint8_t *pcmd;
struct RRQ *rrq;
uint16_t rxid;
uint16_t xri;
struct lpfc_node_rrq *prrq;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt);
pcmd += sizeof(uint32_t);
rrq = (struct RRQ *)pcmd;
rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
rxid = bf_get(rrq_rxid, rrq);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
" x%x x%x\n",
be32_to_cpu(bf_get(rrq_did, rrq)),
bf_get(rrq_oxid, rrq),
rxid,
iocb->iotag, iocb->iocb.ulpContext);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Clear RRQ: did:x%x flg:x%x exchg:x%.08x",
ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
xri = bf_get(rrq_oxid, rrq);
else
xri = rxid;
prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
if (prrq)
lpfc_clr_rrq_active(phba, xri, prrq);
return;
}
/**
* lpfc_els_rsp_echo_acc - Issue echo acc response
* @vport: pointer to a virtual N_Port data structure.
* @data: pointer to echo data to return in the accept.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* Return code
* 0 - Successfully issued acc echo response
* 1 - Failed to issue acc echo response
**/
static int
lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
/* The accumulated length can exceed the BPL_SIZE. For
* now, use this as the limit
*/
if (cmdsize > LPFC_BPL_SIZE)
cmdsize = LPFC_BPL_SIZE;
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */
elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id;
/* Xmit ECHO ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2876 Xmit ECHO ACC response tag x%x xri x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext);
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t);
memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
"Issue ACC ECHO: did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues Address Discover (ADISC) ELS commands to those
* N_Ports which are in node port recovery state and ADISC has not been issued
* for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
* lpfc_issue_els_adisc() routine, the per @vport number of discover count
* (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
* pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
* be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
* IOCBs quit for later pick up. On the other hand, after walking through
* all the ndlps with the @vport and there is none ADISC IOCB issued, the
* @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
* no more ADISC need to be sent.
*
* Return code
* The number of N_Ports with adisc issued.
**/
int
lpfc_els_disc_adisc(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp, *next_ndlp;
int sentadisc = 0;
/* go thru NPR nodes and issue any remaining ELS ADISCs */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
(ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
(ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
lpfc_issue_els_adisc(vport, ndlp, 0);
sentadisc++;
vport->num_disc_nodes++;
if (vport->num_disc_nodes >=
vport->cfg_discovery_threads) {
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_NLP_MORE;
spin_unlock_irq(shost->host_lock);
break;
}
}
}
if (sentadisc == 0) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NLP_MORE;
spin_unlock_irq(shost->host_lock);
}
return sentadisc;
}
/**
* lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
* which are in node port recovery state, with a @vport. Each time an ELS
* ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
* the per @vport number of discover count (num_disc_nodes) shall be
* incremented. If the num_disc_nodes reaches a pre-configured threshold
* (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
* bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
* later pick up. On the other hand, after walking through all the ndlps with
* the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
* shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
* PLOGI need to be sent.
*
* Return code
* The number of N_Ports with plogi issued.
**/
int
lpfc_els_disc_plogi(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp, *next_ndlp;
int sentplogi = 0;
/* go thru NPR nodes and issue any remaining ELS PLOGIs */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
(ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
(ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
(ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
sentplogi++;
vport->num_disc_nodes++;
if (vport->num_disc_nodes >=
vport->cfg_discovery_threads) {
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_NLP_MORE;
spin_unlock_irq(shost->host_lock);
break;
}
}
}
if (sentplogi) {
lpfc_set_disctmo(vport);
}
else {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NLP_MORE;
spin_unlock_irq(shost->host_lock);
}
return sentplogi;
}
void
lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
uint32_t word0)
{
desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
desc->payload.els_req = word0;
desc->length = cpu_to_be32(sizeof(desc->payload));
}
void
lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
uint8_t *page_a0, uint8_t *page_a2)
{
uint16_t wavelength;
uint16_t temperature;
uint16_t rx_power;
uint16_t tx_bias;
uint16_t tx_power;
uint16_t vcc;
uint16_t flag = 0;
struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
&page_a0[SSF_TRANSCEIVER_CODE_B4];
trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
&page_a0[SSF_TRANSCEIVER_CODE_B5];
if ((trasn_code_byte4->fc_sw_laser) ||
(trasn_code_byte5->fc_sw_laser_sl) ||
(trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */
flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
} else if (trasn_code_byte4->fc_lw_laser) {
wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
page_a0[SSF_WAVELENGTH_B0];
if (wavelength == SFP_WAVELENGTH_LC1310)
flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
if (wavelength == SFP_WAVELENGTH_LL1550)
flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
}
/* check if its SFP+ */
flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
<< SFP_FLAG_CT_SHIFT;
/* check if its OPTICAL */
flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
SFP_FLAG_IS_OPTICAL_PORT : 0)
<< SFP_FLAG_IS_OPTICAL_SHIFT;
temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
page_a2[SFF_TEMPERATURE_B0]);
vcc = (page_a2[SFF_VCC_B1] << 8 |
page_a2[SFF_VCC_B0]);
tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
page_a2[SFF_TXPOWER_B0]);
tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
page_a2[SFF_TX_BIAS_CURRENT_B0]);
rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
page_a2[SFF_RXPOWER_B0]);
desc->sfp_info.temperature = cpu_to_be16(temperature);
desc->sfp_info.rx_power = cpu_to_be16(rx_power);
desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
desc->sfp_info.tx_power = cpu_to_be16(tx_power);
desc->sfp_info.vcc = cpu_to_be16(vcc);
desc->sfp_info.flags = cpu_to_be16(flag);
desc->length = cpu_to_be32(sizeof(desc->sfp_info));
}
void
lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
READ_LNK_VAR *stat)
{
uint32_t type;
desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
desc->info.port_type = cpu_to_be32(type);
desc->info.link_status.link_failure_cnt =
cpu_to_be32(stat->linkFailureCnt);
desc->info.link_status.loss_of_synch_cnt =
cpu_to_be32(stat->lossSyncCnt);
desc->info.link_status.loss_of_signal_cnt =
cpu_to_be32(stat->lossSignalCnt);
desc->info.link_status.primitive_seq_proto_err =
cpu_to_be32(stat->primSeqErrCnt);
desc->info.link_status.invalid_trans_word =
cpu_to_be32(stat->invalidXmitWord);
desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
desc->length = cpu_to_be32(sizeof(desc->info));
}
void
lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
{
uint16_t rdp_cap = 0;
uint16_t rdp_speed;
desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
switch (phba->sli4_hba.link_state.speed) {
case LPFC_FC_LA_SPEED_1G:
rdp_speed = RDP_PS_1GB;
break;
case LPFC_FC_LA_SPEED_2G:
rdp_speed = RDP_PS_2GB;
break;
case LPFC_FC_LA_SPEED_4G:
rdp_speed = RDP_PS_4GB;
break;
case LPFC_FC_LA_SPEED_8G:
rdp_speed = RDP_PS_8GB;
break;
case LPFC_FC_LA_SPEED_10G:
rdp_speed = RDP_PS_10GB;
break;
case LPFC_FC_LA_SPEED_16G:
rdp_speed = RDP_PS_16GB;
break;
case LPFC_FC_LA_SPEED_32G:
rdp_speed = RDP_PS_32GB;
break;
default:
rdp_speed = RDP_PS_UNKNOWN;
break;
}
desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
if (phba->lmt & LMT_32Gb)
rdp_cap |= RDP_PS_32GB;
if (phba->lmt & LMT_16Gb)
rdp_cap |= RDP_PS_16GB;
if (phba->lmt & LMT_10Gb)
rdp_cap |= RDP_PS_10GB;
if (phba->lmt & LMT_8Gb)
rdp_cap |= RDP_PS_8GB;
if (phba->lmt & LMT_4Gb)
rdp_cap |= RDP_PS_4GB;
if (phba->lmt & LMT_2Gb)
rdp_cap |= RDP_PS_2GB;
if (phba->lmt & LMT_1Gb)
rdp_cap |= RDP_PS_1GB;
if (rdp_cap == 0)
rdp_cap = RDP_CAP_UNKNOWN;
desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
desc->length = cpu_to_be32(sizeof(desc->info));
}
void
lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
struct lpfc_hba *phba)
{
desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
memcpy(desc->port_names.wwnn, phba->wwnn,
sizeof(desc->port_names.wwnn));
memcpy(desc->port_names.wwpn, &phba->wwpn,
sizeof(desc->port_names.wwpn));
desc->length = cpu_to_be32(sizeof(desc->port_names));
}
void
lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
if (vport->fc_flag & FC_FABRIC) {
memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
sizeof(desc->port_names.wwnn));
memcpy(desc->port_names.wwpn, &vport->fabric_portname,
sizeof(desc->port_names.wwpn));
} else { /* Point to Point */
memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
sizeof(desc->port_names.wwnn));
memcpy(desc->port_names.wwnn, &ndlp->nlp_portname,
sizeof(desc->port_names.wwpn));
}
desc->length = cpu_to_be32(sizeof(desc->port_names));
}
void
lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
int status)
{
struct lpfc_nodelist *ndlp = rdp_context->ndlp;
struct lpfc_vport *vport = ndlp->vport;
struct lpfc_iocbq *elsiocb;
IOCB_t *icmd;
uint8_t *pcmd;
struct ls_rjt *stat;
struct fc_rdp_res_frame *rdp_res;
uint32_t cmdsize;
int rc;
if (status != SUCCESS)
goto error;
cmdsize = sizeof(struct fc_rdp_res_frame);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
lpfc_max_els_tries, rdp_context->ndlp,
rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
lpfc_nlp_put(ndlp);
if (!elsiocb)
goto free_rdp_context;
icmd = &elsiocb->iocb;
icmd->ulpContext = rdp_context->rx_id;
icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2171 Xmit RDP response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
rdp_res = (struct fc_rdp_res_frame *)
(((struct lpfc_dmabuf *) elsiocb->context2)->virt);
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
/* For RDP payload */
lpfc_rdp_res_link_service(&rdp_res->link_service_desc, ELS_CMD_RDP);
lpfc_rdp_res_sfp_desc(&rdp_res->sfp_desc,
rdp_context->page_a0, rdp_context->page_a2);
lpfc_rdp_res_speed(&rdp_res->portspeed_desc, phba);
lpfc_rdp_res_link_error(&rdp_res->link_error_desc,
&rdp_context->link_stat);
lpfc_rdp_res_diag_port_names(&rdp_res->diag_port_names_desc, phba);
lpfc_rdp_res_attach_port_names(&rdp_res->attached_port_names_desc,
vport, ndlp);
rdp_res->length = cpu_to_be32(RDP_DESC_PAYLOAD_SIZE);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
kfree(rdp_context);
return;
error:
cmdsize = 2 * sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
lpfc_nlp_put(ndlp);
if (!elsiocb)
goto free_rdp_context;
icmd = &elsiocb->iocb;
icmd->ulpContext = rdp_context->rx_id;
icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
phba->fc_stat.elsXmitLSRJT++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
free_rdp_context:
kfree(rdp_context);
}
int
lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
{
LPFC_MBOXQ_t *mbox = NULL;
int rc;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox) {
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
"7105 failed to allocate mailbox memory");
return 1;
}
if (lpfc_sli4_dump_page_a0(phba, mbox))
goto prep_mbox_fail;
mbox->vport = rdp_context->ndlp->vport;
mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
mbox->context2 = (struct lpfc_rdp_context *) rdp_context;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED)
goto issue_mbox_fail;
return 0;
prep_mbox_fail:
issue_mbox_fail:
mempool_free(mbox, phba->mbox_mem_pool);
return 1;
}
/*
* lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes an unsolicited RDP(Read Diagnostic Parameters)
* IOCB. First, the payload of the unsolicited RDP is checked.
* Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
* for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
* (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
* gather all data and send RDP response.
*
* Return code
* 0 - Sent the acc response
* 1 - Sent the reject response.
*/
static int
lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
struct fc_rdp_req_frame *rdp_req;
struct lpfc_rdp_context *rdp_context;
IOCB_t *cmd = NULL;
struct ls_rjt stat;
if (phba->sli_rev < LPFC_SLI_REV4 ||
(bf_get(lpfc_sli_intf_if_type,
&phba->sli4_hba.sli_intf) !=
LPFC_SLI_INTF_IF_TYPE_2)) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_expl = LSEXP_REQ_UNSUPPORTED;
goto error;
}
if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_expl = LSEXP_REQ_UNSUPPORTED;
goto error;
}
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2422 ELS RDP Request "
"dec len %d tag x%x port_id %d len %d\n",
be32_to_cpu(rdp_req->rdp_des_length),
be32_to_cpu(rdp_req->nport_id_desc.tag),
be32_to_cpu(rdp_req->nport_id_desc.nport_id),
be32_to_cpu(rdp_req->nport_id_desc.length));
if (sizeof(struct fc_rdp_nport_desc) !=
be32_to_cpu(rdp_req->rdp_des_length))
goto rjt_logerr;
if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
goto rjt_logerr;
if (RDP_NPORT_ID_SIZE !=
be32_to_cpu(rdp_req->nport_id_desc.length))
goto rjt_logerr;
rdp_context = kmalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
if (!rdp_context) {
rjt_err = LSRJT_UNABLE_TPC;
goto error;
}
memset(rdp_context, 0, sizeof(struct lpfc_rdp_context));
cmd = &cmdiocb->iocb;
rdp_context->ndlp = lpfc_nlp_get(ndlp);
rdp_context->ox_id = cmd->unsli3.rcvsli3.ox_id;
rdp_context->rx_id = cmd->ulpContext;
rdp_context->cmpl = lpfc_els_rdp_cmpl;
if (lpfc_get_rdp_info(phba, rdp_context)) {
lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
"2423 Unable to send mailbox");
kfree(rdp_context);
rjt_err = LSRJT_UNABLE_TPC;
lpfc_nlp_put(ndlp);
goto error;
}
return 0;
rjt_logerr:
rjt_err = LSRJT_LOGICAL_ERR;
error:
memset(&stat, 0, sizeof(stat));
stat.un.b.lsRjtRsnCode = rjt_err;
stat.un.b.lsRjtRsnCodeExp = rjt_expl;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 1;
}
static void
lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb;
IOCB_t *icmd;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
struct ls_rjt *stat;
union lpfc_sli4_cfg_shdr *shdr;
struct lpfc_lcb_context *lcb_context;
struct fc_lcb_res_frame *lcb_res;
uint32_t cmdsize, shdr_status, shdr_add_status;
int rc;
mb = &pmb->u.mb;
lcb_context = (struct lpfc_lcb_context *)pmb->context1;
ndlp = lcb_context->ndlp;
pmb->context1 = NULL;
pmb->context2 = NULL;
shdr = (union lpfc_sli4_cfg_shdr *)
&pmb->u.mqe.un.beacon_config.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
"0194 SET_BEACON_CONFIG mailbox "
"completed with status x%x add_status x%x,"
" mbx status x%x\n",
shdr_status, shdr_add_status, mb->mbxStatus);
if (mb->mbxStatus && !(shdr_status &&
shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)) {
mempool_free(pmb, phba->mbox_mem_pool);
goto error;
}
mempool_free(pmb, phba->mbox_mem_pool);
cmdsize = sizeof(struct fc_lcb_res_frame);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
/* Decrement the ndlp reference count from previous mbox command */
lpfc_nlp_put(ndlp);
if (!elsiocb)
goto free_lcb_context;
lcb_res = (struct fc_lcb_res_frame *)
(((struct lpfc_dmabuf *)elsiocb->context2)->virt);
icmd = &elsiocb->iocb;
icmd->ulpContext = lcb_context->rx_id;
icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt);
*((uint32_t *)(pcmd)) = ELS_CMD_ACC;
lcb_res->lcb_sub_command = lcb_context->sub_command;
lcb_res->lcb_type = lcb_context->type;
lcb_res->lcb_frequency = lcb_context->frequency;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
kfree(lcb_context);
return;
error:
cmdsize = sizeof(struct fc_lcb_res_frame);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_LS_RJT);
lpfc_nlp_put(ndlp);
if (!elsiocb)
goto free_lcb_context;
icmd = &elsiocb->iocb;
icmd->ulpContext = lcb_context->rx_id;
icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt);
*((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitLSRJT++;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (rc == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
free_lcb_context:
kfree(lcb_context);
}
static int
lpfc_sli4_set_beacon(struct lpfc_vport *vport,
struct lpfc_lcb_context *lcb_context,
uint32_t beacon_state)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox = NULL;
uint32_t len;
int rc;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return 1;
len = sizeof(struct lpfc_mbx_set_beacon_config) -
sizeof(struct lpfc_sli4_cfg_mhdr);
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
LPFC_SLI4_MBX_EMBED);
mbox->context1 = (void *)lcb_context;
mbox->vport = phba->pport;
mbox->mbox_cmpl = lpfc_els_lcb_rsp;
bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
phba->sli4_hba.physical_port);
bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
beacon_state);
bf_set(lpfc_mbx_set_beacon_port_type, &mbox->u.mqe.un.beacon_config, 1);
bf_set(lpfc_mbx_set_beacon_duration, &mbox->u.mqe.un.beacon_config, 0);
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
return 1;
}
return 0;
}
/**
* lpfc_els_rcv_lcb - Process an unsolicited LCB
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
* First, the payload of the unsolicited LCB is checked.
* Then based on Subcommand beacon will either turn on or off.
*
* Return code
* 0 - Sent the acc response
* 1 - Sent the reject response.
**/
static int
lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint8_t *lp;
struct fc_lcb_request_frame *beacon;
struct lpfc_lcb_context *lcb_context;
uint8_t state, rjt_err;
struct ls_rjt stat;
pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
lp = (uint8_t *)pcmd->virt;
beacon = (struct fc_lcb_request_frame *)pcmd->virt;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
"type x%x frequency %x duration x%x\n",
lp[0], lp[1], lp[2],
beacon->lcb_command,
beacon->lcb_sub_command,
beacon->lcb_type,
beacon->lcb_frequency,
be16_to_cpu(beacon->lcb_duration));
if (phba->sli_rev < LPFC_SLI_REV4 ||
(bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
LPFC_SLI_INTF_IF_TYPE_2)) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
if (phba->hba_flag & HBA_FCOE_MODE) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
if (beacon->lcb_frequency == 0) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
if ((beacon->lcb_type != LPFC_LCB_GREEN) &&
(beacon->lcb_type != LPFC_LCB_AMBER)) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
if ((beacon->lcb_sub_command != LPFC_LCB_ON) &&
(beacon->lcb_sub_command != LPFC_LCB_OFF)) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
if ((beacon->lcb_sub_command == LPFC_LCB_ON) &&
(beacon->lcb_type != LPFC_LCB_GREEN) &&
(beacon->lcb_type != LPFC_LCB_AMBER)) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
if (be16_to_cpu(beacon->lcb_duration) != 0) {
rjt_err = LSRJT_CMD_UNSUPPORTED;
goto rjt;
}
lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
if (!lcb_context) {
rjt_err = LSRJT_UNABLE_TPC;
goto rjt;
}
state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
lcb_context->sub_command = beacon->lcb_sub_command;
lcb_context->type = beacon->lcb_type;
lcb_context->frequency = beacon->lcb_frequency;
lcb_context->ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
lcb_context->rx_id = cmdiocb->iocb.ulpContext;
lcb_context->ndlp = lpfc_nlp_get(ndlp);
if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
lpfc_printf_vlog(ndlp->vport, KERN_ERR,
LOG_ELS, "0193 failed to send mail box");
kfree(lcb_context);
lpfc_nlp_put(ndlp);
rjt_err = LSRJT_UNABLE_TPC;
goto rjt;
}
return 0;
rjt:
memset(&stat, 0, sizeof(stat));
stat.un.b.lsRjtRsnCode = rjt_err;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 1;
}
/**
* lpfc_els_flush_rscn - Clean up any rscn activities with a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine cleans up any Registration State Change Notification
* (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
* @vport together with the host_lock is used to prevent multiple thread
* trying to access the RSCN array on a same @vport at the same time.
**/
void
lpfc_els_flush_rscn(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
int i;
spin_lock_irq(shost->host_lock);
if (vport->fc_rscn_flush) {
/* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock);
return;
}
/* Indicate we are walking lpfc_els_flush_rscn on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
vport->fc_rscn_id_list[i] = NULL;
}
spin_lock_irq(shost->host_lock);
vport->fc_rscn_id_cnt = 0;
vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
/* Indicate we are done walking this fc_rscn_id_list */
vport->fc_rscn_flush = 0;
}
/**
* lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
* @vport: pointer to a host virtual N_Port data structure.
* @did: remote destination port identifier.
*
* This routine checks whether there is any pending Registration State
* Configuration Notification (RSCN) to a @did on @vport.
*
* Return code
* None zero - The @did matched with a pending rscn
* 0 - not able to match @did with a pending rscn
**/
int
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
{
D_ID ns_did;
D_ID rscn_did;
uint32_t *lp;
uint32_t payload_len, i;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
ns_did.un.word = did;
/* Never match fabric nodes for RSCNs */
if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
return 0;
/* If we are doing a FULL RSCN rediscovery, match everything */
if (vport->fc_flag & FC_RSCN_DISCOVERY)
return did;
spin_lock_irq(shost->host_lock);
if (vport->fc_rscn_flush) {
/* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock);
return 0;
}
/* Indicate we are walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
lp = vport->fc_rscn_id_list[i]->virt;
payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
payload_len -= sizeof(uint32_t); /* take off word 0 */
while (payload_len) {
rscn_did.un.word = be32_to_cpu(*lp++);
payload_len -= sizeof(uint32_t);
switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
case RSCN_ADDRESS_FORMAT_PORT:
if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area)
&& (ns_did.un.b.id == rscn_did.un.b.id))
goto return_did_out;
break;
case RSCN_ADDRESS_FORMAT_AREA:
if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area))
goto return_did_out;
break;
case RSCN_ADDRESS_FORMAT_DOMAIN:
if (ns_did.un.b.domain == rscn_did.un.b.domain)
goto return_did_out;
break;
case RSCN_ADDRESS_FORMAT_FABRIC:
goto return_did_out;
}
}
}
/* Indicate we are done with walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
return 0;
return_did_out:
/* Indicate we are done with walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
return did;
}
/**
* lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
* state machine for a @vport's nodes that are with pending RSCN (Registration
* State Change Notification).
*
* Return code
* 0 - Successful (currently alway return 0)
**/
static int
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp = NULL;
/* Move all affected nodes by pending RSCNs to NPR state. */
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp) ||
(ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
!lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
continue;
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RECOVERY);
lpfc_cancel_retry_delay_tmo(vport, ndlp);
}
return 0;
}
/**
* lpfc_send_rscn_event - Send an RSCN event to management application
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
*
* lpfc_send_rscn_event sends an RSCN netlink event to management
* applications.
*/
static void
lpfc_send_rscn_event(struct lpfc_vport *vport,
struct lpfc_iocbq *cmdiocb)
{
struct lpfc_dmabuf *pcmd;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
uint32_t *payload_ptr;
uint32_t payload_len;
struct lpfc_rscn_event_header *rscn_event_data;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
payload_ptr = (uint32_t *) pcmd->virt;
payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
payload_len, GFP_KERNEL);
if (!rscn_event_data) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0147 Failed to allocate memory for RSCN event\n");
return;
}
rscn_event_data->event_type = FC_REG_RSCN_EVENT;
rscn_event_data->payload_length = payload_len;
memcpy(rscn_event_data->rscn_payload, payload_ptr,
payload_len);
fc_host_post_vendor_event(shost,
fc_get_event_number(),
sizeof(struct lpfc_rscn_event_header) + payload_len,
(char *)rscn_event_data,
LPFC_NL_VENDOR_ID);
kfree(rscn_event_data);
}
/**
* lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes an unsolicited RSCN (Registration State Change
* Notification) IOCB. First, the payload of the unsolicited RSCN is walked
* to invoke fc_host_post_event() routine to the FC transport layer. If the
* discover state machine is about to begin discovery, it just accepts the
* RSCN and the discovery process will satisfy the RSCN. If this RSCN only
* contains N_Port IDs for other vports on this HBA, it just accepts the
* RSCN and ignore processing it. If the state machine is in the recovery
* state, the fc_rscn_id_list of this @vport is walked and the
* lpfc_rscn_recovery_check() routine is invoked to send recovery event for
* all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
* routine is invoked to handle the RSCN event.
*
* Return code
* 0 - Just sent the acc response
* 1 - Sent the acc response and waited for name server completion
**/
static int
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint32_t *lp, *datap;
uint32_t payload_len, length, nportid, *cmd;
int rscn_cnt;
int rscn_id = 0, hba_id = 0;
int i;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
payload_len -= sizeof(uint32_t); /* take off word 0 */
/* RSCN received */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0214 RSCN received Data: x%x x%x x%x x%x\n",
vport->fc_flag, payload_len, *lp,
vport->fc_rscn_id_cnt);
/* Send an RSCN event to the management application */
lpfc_send_rscn_event(vport, cmdiocb);
for (i = 0; i < payload_len/sizeof(uint32_t); i++)
fc_host_post_event(shost, fc_get_event_number(),
FCH_EVT_RSCN, lp[i]);
/* If we are about to begin discovery, just ACC the RSCN.
* Discovery processing will satisfy it.
*/
if (vport->port_state <= LPFC_NS_QRY) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
}
/* If this RSCN just contains NPortIDs for other vports on this HBA,
* just ACC and ignore it.
*/
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
!(vport->cfg_peer_port_login)) {
i = payload_len;
datap = lp;
while (i > 0) {
nportid = *datap++;
nportid = ((be32_to_cpu(nportid)) & Mask_DID);
i -= sizeof(uint32_t);
rscn_id++;
if (lpfc_find_vport_by_did(phba, nportid))
hba_id++;
}
if (rscn_id == hba_id) {
/* ALL NPortIDs in RSCN are on HBA */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0219 Ignore RSCN "
"Data: x%x x%x x%x x%x\n",
vport->fc_flag, payload_len,
*lp, vport->fc_rscn_id_cnt);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
ndlp->nlp_DID, vport->port_state,
ndlp->nlp_flag);
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
ndlp, NULL);
return 0;
}
}
spin_lock_irq(shost->host_lock);
if (vport->fc_rscn_flush) {
/* Another thread is walking fc_rscn_id_list on this vport */
vport->fc_flag |= FC_RSCN_DISCOVERY;
spin_unlock_irq(shost->host_lock);
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
}
/* Indicate we are walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
/* Get the array count after successfully have the token */
rscn_cnt = vport->fc_rscn_id_cnt;
/* If we are already processing an RSCN, save the received
* RSCN payload buffer, cmdiocb->context2 to process later.
*/
if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_RSCN_DEFERRED;
if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
!(vport->fc_flag & FC_RSCN_DISCOVERY)) {
vport->fc_flag |= FC_RSCN_MODE;
spin_unlock_irq(shost->host_lock);
if (rscn_cnt) {
cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
}
if ((rscn_cnt) &&
(payload_len + length <= LPFC_BPL_SIZE)) {
*cmd &= ELS_CMD_MASK;
*cmd |= cpu_to_be32(payload_len + length);
memcpy(((uint8_t *)cmd) + length, lp,
payload_len);
} else {
vport->fc_rscn_id_list[rscn_cnt] = pcmd;
vport->fc_rscn_id_cnt++;
/* If we zero, cmdiocb->context2, the calling
* routine will not try to free it.
*/
cmdiocb->context2 = NULL;
}
/* Deferred RSCN */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0235 Deferred RSCN "
"Data: x%x x%x x%x\n",
vport->fc_rscn_id_cnt, vport->fc_flag,
vport->port_state);
} else {
vport->fc_flag |= FC_RSCN_DISCOVERY;
spin_unlock_irq(shost->host_lock);
/* ReDiscovery RSCN */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0234 ReDiscovery RSCN "
"Data: x%x x%x x%x\n",
vport->fc_rscn_id_cnt, vport->fc_flag,
vport->port_state);
}
/* Indicate we are done walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
/* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_RSCN_DEFERRED;
spin_unlock_irq(shost->host_lock);
return 0;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN: did:x%x/ste:x%x flg:x%x",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_RSCN_MODE;
spin_unlock_irq(shost->host_lock);
vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
/* Indicate we are done walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
/*
* If we zero, cmdiocb->context2, the calling routine will
* not try to free it.
*/
cmdiocb->context2 = NULL;
lpfc_set_disctmo(vport);
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
/* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(vport);
return lpfc_els_handle_rscn(vport);
}
/**
* lpfc_els_handle_rscn - Handle rscn for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine handles the Registration State Configuration Notification
* (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
* be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
* if the ndlp to NameServer exists, a Common Transport (CT) command to the
* NameServer shall be issued. If CT command to the NameServer fails to be
* issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
* RSCN activities with the @vport.
*
* Return code
* 0 - Cleaned up rscn on the @vport
* 1 - Wait for plogi to name server before proceed
**/
int
lpfc_els_handle_rscn(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp;
struct lpfc_hba *phba = vport->phba;
/* Ignore RSCN if the port is being torn down. */
if (vport->load_flag & FC_UNLOADING) {
lpfc_els_flush_rscn(vport);
return 0;
}
/* Start timer for RSCN processing */
lpfc_set_disctmo(vport);
/* RSCN processed */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0215 RSCN processed Data: x%x x%x x%x x%x\n",
vport->fc_flag, 0, vport->fc_rscn_id_cnt,
vport->port_state);
/* To process RSCN, first compare RSCN data with NameServer */
vport->fc_ns_retry = 0;
vport->num_disc_nodes = 0;
ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (ndlp && NLP_CHK_NODE_ACT(ndlp)
&& ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
/* Good ndlp, issue CT Request to NameServer */
if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
/* Wait for NameServer query cmpl before we can
continue */
return 1;
} else {
/* If login to NameServer does not exist, issue one */
/* Good status, issue PLOGI to NameServer */
ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (ndlp && NLP_CHK_NODE_ACT(ndlp))
/* Wait for NameServer login cmpl before we can
continue */
return 1;
if (ndlp) {
ndlp = lpfc_enable_node(vport, ndlp,
NLP_STE_PLOGI_ISSUE);
if (!ndlp) {
lpfc_els_flush_rscn(vport);
return 0;
}
ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
} else {
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp) {
lpfc_els_flush_rscn(vport);
return 0;
}
lpfc_nlp_init(vport, ndlp, NameServer_DID);
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
}
ndlp->nlp_type |= NLP_FABRIC;
lpfc_issue_els_plogi(vport, NameServer_DID, 0);
/* Wait for NameServer login cmpl before we can
* continue
*/
return 1;
}
lpfc_els_flush_rscn(vport);
return 0;
}
/**
* lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Fabric Login (FLOGI) IOCB received as an ELS
* unsolicited event. An unsolicited FLOGI can be received in a point-to-
* point topology. As an unsolicited FLOGI should not be received in a loop
* mode, any unsolicited FLOGI received in loop mode shall be ignored. The
* lpfc_check_sparm() routine is invoked to check the parameters in the
* unsolicited FLOGI. If parameters validation failed, the routine
* lpfc_els_rsp_reject() shall be called with reject reason code set to
* LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
* FLOGI shall be compared with the Port WWN of the @vport to determine who
* will initiate PLOGI. The higher lexicographical value party shall has
* higher priority (as the winning port) and will initiate PLOGI and
* communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
* of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
* and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
*
* Return code
* 0 - Successfully processed the unsolicited flogi
* 1 - Failed to process the unsolicited flogi
**/
static int
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
uint32_t *lp = (uint32_t *) pcmd->virt;
IOCB_t *icmd = &cmdiocb->iocb;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
struct ls_rjt stat;
uint32_t cmd, did;
int rc;
uint32_t fc_flag = 0;
uint32_t port_state = 0;
cmd = *lp++;
sp = (struct serv_parm *) lp;
/* FLOGI received */
lpfc_set_disctmo(vport);
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
/* We should never receive a FLOGI in loop mode, ignore it */
did = icmd->un.elsreq64.remoteID;
/* An FLOGI ELS command <elsCmd> was received from DID <did> in
Loop Mode */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0113 An FLOGI ELS command x%x was "
"received from DID x%x in Loop Mode\n",
cmd, did);
return 1;
}
if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
/* For a FLOGI we accept, then if our portname is greater
* then the remote portname we initiate Nport login.
*/
rc = memcmp(&vport->fc_portname, &sp->portName,
sizeof(struct lpfc_name));
if (!rc) {
if (phba->sli_rev < LPFC_SLI_REV4) {
mbox = mempool_alloc(phba->mbox_mem_pool,
GFP_KERNEL);
if (!mbox)
return 1;
lpfc_linkdown(phba);
lpfc_init_link(phba, mbox,
phba->cfg_topology,
phba->cfg_link_speed);
mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox,
MBX_NOWAIT);
lpfc_set_loopback_flag(phba);
if (rc == MBX_NOT_FINISHED)
mempool_free(mbox, phba->mbox_mem_pool);
return 1;
} else {
/* abort the flogi coming back to ourselves
* due to external loopback on the port.
*/
lpfc_els_abort_flogi(phba);
return 0;
}
} else if (rc > 0) { /* greater than */
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_PT2PT_PLOGI;
spin_unlock_irq(shost->host_lock);
/* If we have the high WWPN we can assign our own
* myDID; otherwise, we have to WAIT for a PLOGI
* from the remote NPort to find out what it
* will be.
*/
vport->fc_myDID = PT2PT_LocalID;
} else
vport->fc_myDID = PT2PT_RemoteID;
/*
* The vport state should go to LPFC_FLOGI only
* AFTER we issue a FLOGI, not receive one.
*/
spin_lock_irq(shost->host_lock);
fc_flag = vport->fc_flag;
port_state = vport->port_state;
vport->fc_flag |= FC_PT2PT;
vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(shost->host_lock);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3311 Rcv Flogi PS x%x new PS x%x "
"fc_flag x%x new fc_flag x%x\n",
port_state, vport->port_state,
fc_flag, vport->fc_flag);
/*
* We temporarily set fc_myDID to make it look like we are
* a Fabric. This is done just so we end up with the right
* did / sid on the FLOGI ACC rsp.
*/
did = vport->fc_myDID;
vport->fc_myDID = Fabric_DID;
} else {
/* Reject this request because invalid parameters */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
stat.un.b.vendorUnique = 0;
/*
* We temporarily set fc_myDID to make it look like we are
* a Fabric. This is done just so we end up with the right
* did / sid on the FLOGI LS_RJT rsp.
*/
did = vport->fc_myDID;
vport->fc_myDID = Fabric_DID;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
/* Now lets put fc_myDID back to what its supposed to be */
vport->fc_myDID = did;
return 1;
}
/* send our FLOGI first */
if (vport->port_state < LPFC_FLOGI) {
vport->fc_myDID = 0;
lpfc_initial_flogi(vport);
vport->fc_myDID = Fabric_DID;
}
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
/* Now lets put fc_myDID back to what its supposed to be */
vport->fc_myDID = did;
if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
goto fail;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
goto fail;
}
}
return 0;
fail:
return 1;
}
/**
* lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Request Node Identification Data (RNID) IOCB
* received as an ELS unsolicited event. Only when the RNID specified format
* 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
* present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
* Accept (ACC) the RNID ELS command. All the other RNID formats are
* rejected by invoking the lpfc_els_rsp_reject() routine.
*
* Return code
* 0 - Successfully processed rnid iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
RNID *rn;
struct ls_rjt stat;
uint32_t cmd;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
rn = (RNID *) lp;
/* RNID received */
switch (rn->Format) {
case 0:
case RNID_TOPOLOGY_DISC:
/* Send back ACC */
lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
break;
default:
/* Reject this request because format not supported */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
}
return 0;
}
/**
* lpfc_els_rcv_echo - Process an unsolicited echo iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* Return code
* 0 - Successfully processed echo iocb (currently always return 0)
**/
static int
lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
uint8_t *pcmd;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
/* skip over first word of echo command to find echo data */
pcmd += sizeof(uint32_t);
lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
return 0;
}
/**
* lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes a Link Incident Report Registration(LIRR) IOCB
* received as an ELS unsolicited event. Currently, this function just invokes
* the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
*
* Return code
* 0 - Successfully processed lirr iocb (currently always return 0)
**/
static int
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct ls_rjt stat;
/* For now, unconditionally reject this command */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 0;
}
/**
* lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
* received as an ELS unsolicited event. A request to RRQ shall only
* be accepted if the Originator Nx_Port N_Port_ID or the Responder
* Nx_Port N_Port_ID of the target Exchange is the same as the
* N_Port_ID of the Nx_Port that makes the request. If the RRQ is
* not accepted, an LS_RJT with reason code "Unable to perform
* command request" and reason code explanation "Invalid Originator
* S_ID" shall be returned. For now, we just unconditionally accept
* RRQ from the target.
**/
static void
lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
if (vport->phba->sli_rev == LPFC_SLI_REV4)
lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
}
/**
* lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function for the MBX_READ_LNK_STAT
* mailbox command. This callback function is to actually send the Accept
* (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
* collects the link statistics from the completion of the MBX_READ_LNK_STAT
* mailbox command, constructs the RPS response with the link statistics
* collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
* response to the RPS.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the RPS Accept Response ELS IOCB command.
*
**/
static void
lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb;
IOCB_t *icmd;
struct RLS_RSP *rls_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
uint16_t oxid;
uint16_t rxid;
uint32_t cmdsize;
mb = &pmb->u.mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff);
oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff);
pmb->context1 = NULL;
pmb->context2 = NULL;
if (mb->mbxStatus) {
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
/* Decrement the ndlp reference count from previous mbox command */
lpfc_nlp_put(ndlp);
if (!elsiocb) {
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
icmd = &elsiocb->iocb;
icmd->ulpContext = rxid;
icmd->unsli3.rcvsli3.ox_id = oxid;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t); /* Skip past command */
rls_rsp = (struct RLS_RSP *)pcmd;
rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
mempool_free(pmb, phba->mbox_mem_pool);
/* Xmit ELS RLS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
"2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
}
/**
* lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function for the MBX_READ_LNK_STAT
* mailbox command. This callback function is to actually send the Accept
* (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
* collects the link statistics from the completion of the MBX_READ_LNK_STAT
* mailbox command, constructs the RPS response with the link statistics
* collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
* response to the RPS.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the RPS Accept Response ELS IOCB command.
*
**/
static void
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb;
IOCB_t *icmd;
RPS_RSP *rps_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
uint16_t status;
uint16_t oxid;
uint16_t rxid;
uint32_t cmdsize;
mb = &pmb->u.mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff);
oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff);
pmb->context1 = NULL;
pmb->context2 = NULL;
if (mb->mbxStatus) {
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
mempool_free(pmb, phba->mbox_mem_pool);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
/* Decrement the ndlp reference count from previous mbox command */
lpfc_nlp_put(ndlp);
if (!elsiocb)
return;
icmd = &elsiocb->iocb;
icmd->ulpContext = rxid;
icmd->unsli3.rcvsli3.ox_id = oxid;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t); /* Skip past command */
rps_rsp = (RPS_RSP *)pcmd;
if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
status = 0x10;
else
status = 0x8;
if (phba->pport->fc_flag & FC_FABRIC)
status |= 0x4;
rps_rsp->rsvd1 = 0;
rps_rsp->portStatus = cpu_to_be16(status);
rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
/* Xmit ELS RPS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
"0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
return;
}
/**
* lpfc_els_rcv_rls - Process an unsolicited rls iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Port Status (RPL) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsl_reject() routine to send the reject
* response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
* for reading the HBA link statistics. It is for the callback function,
* lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
* to actually sending out RPL Accept (ACC) response.
*
* Return codes
* 0 - Successfully processed rls iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
struct ls_rjt stat;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RPS request and done with it */
goto reject_out;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
if (mbox) {
lpfc_read_lnk_stat(phba, mbox);
mbox->context1 = (void *)((unsigned long)
((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
cmdiocb->iocb.ulpContext)); /* rx_id */
mbox->context2 = lpfc_nlp_get(ndlp);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
!= MBX_NOT_FINISHED)
/* Mbox completion will send ELS Response */
return 0;
/* Decrement reference count used for the failed mbox
* command.
*/
lpfc_nlp_put(ndlp);
mempool_free(mbox, phba->mbox_mem_pool);
}
reject_out:
/* issue rejection response */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 0;
}
/**
* lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Timout Value (RTV) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsl_reject() routine to send the reject
* response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
* Value (RTV) unsolicited IOCB event.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the RPS Accept Response ELS IOCB command.
*
* Return codes
* 0 - Successfully processed rtv iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct ls_rjt stat;
struct RTV_RSP *rtv_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
uint32_t cmdsize;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RPS request and done with it */
goto reject_out;
cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
lpfc_max_els_tries, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint32_t); /* Skip past command */
/* use the command's xri in the response */
elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */
elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
rtv_rsp = (struct RTV_RSP *)pcmd;
/* populate RTV payload */
rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
/* Xmit ELS RLS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
"2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
"did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
"Data: x%x x%x x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi,
rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
lpfc_els_free_iocb(phba, elsiocb);
return 0;
reject_out:
/* issue rejection response */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 0;
}
/* lpfc_els_rcv_rps - Process an unsolicited rps iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Port Status (RPS) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsp_reject() routine to send the reject
* response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
* for reading the HBA link statistics. It is for the callback function,
* lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
* to actually sending out RPS Accept (ACC) response.
*
* Return codes
* 0 - Successfully processed rps iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
uint32_t *lp;
uint8_t flag;
LPFC_MBOXQ_t *mbox;
struct lpfc_dmabuf *pcmd;
RPS *rps;
struct ls_rjt stat;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RPS request and done with it */
goto reject_out;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
flag = (be32_to_cpu(*lp++) & 0xf);
rps = (RPS *) lp;
if ((flag == 0) ||
((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
sizeof(struct lpfc_name)) == 0))) {
printk("Fix me....\n");
dump_stack();
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
if (mbox) {
lpfc_read_lnk_stat(phba, mbox);
mbox->context1 = (void *)((unsigned long)
((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
cmdiocb->iocb.ulpContext)); /* rx_id */
mbox->context2 = lpfc_nlp_get(ndlp);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
!= MBX_NOT_FINISHED)
/* Mbox completion will send ELS Response */
return 0;
/* Decrement reference count used for the failed mbox
* command.
*/
lpfc_nlp_put(ndlp);
mempool_free(mbox, phba->mbox_mem_pool);
}
}
reject_out:
/* issue rejection response */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 0;
}
/* lpfc_issue_els_rrq - Process an unsolicited rps iocb
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @did: DID of the target.
* @rrq: Pointer to the rrq struct.
*
* Build a ELS RRQ command and send it to the target. If the issue_iocb is
* Successful the the completion handler will clear the RRQ.
*
* Return codes
* 0 - Successfully sent rrq els iocb.
* 1 - Failed to send rrq els iocb.
**/
static int
lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint32_t did, struct lpfc_node_rrq *rrq)
{
struct lpfc_hba *phba = vport->phba;
struct RRQ *els_rrq;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int ret;
if (ndlp != rrq->ndlp)
ndlp = rrq->ndlp;
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
return 1;
/* If ndlp is not NULL, we will bump the reference count on it */
cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
ELS_CMD_RRQ);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For RRQ request, remainder of payload is Exchange IDs */
*((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
pcmd += sizeof(uint32_t);
els_rrq = (struct RRQ *) pcmd;
bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
bf_set(rrq_rxid, els_rrq, rrq->rxid);
bf_set(rrq_did, els_rrq, vport->fc_myDID);
els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue RRQ: did:x%x",
did, rrq->xritag, rrq->rxid);
elsiocb->context_un.rrq = rrq;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq;
ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
if (ret == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_send_rrq - Sends ELS RRQ if needed.
* @phba: pointer to lpfc hba data structure.
* @rrq: pointer to the active rrq.
*
* This routine will call the lpfc_issue_els_rrq if the rrq is
* still active for the xri. If this function returns a failure then
* the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
*
* Returns 0 Success.
* 1 Failure.
**/
int
lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
{
struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
rrq->nlp_DID);
if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
return lpfc_issue_els_rrq(rrq->vport, ndlp,
rrq->nlp_DID, rrq);
else
return 1;
}
/**
* lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
* @vport: pointer to a host virtual N_Port data structure.
* @cmdsize: size of the ELS command.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
* It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the RPL Accept Response ELS command.
*
* Return code
* 0 - Successfully issued ACC RPL ELS command
* 1 - Failed to issue ACC RPL ELS command
**/
static int
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd, *oldcmd;
RPL_RSP rpl_rsp;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof(uint16_t);
*((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
pcmd += sizeof(uint16_t);
/* Setup the RPL ACC payload */
rpl_rsp.listLen = be32_to_cpu(1);
rpl_rsp.index = 0;
rpl_rsp.port_num_blk.portNum = 0;
rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
sizeof(struct lpfc_name));
memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
/* Xmit ELS RPL ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0120 Xmit ELS RPL ACC response tag x%x "
"xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
"rpi x%x\n",
elsiocb->iotag, elsiocb->iocb.ulpContext,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Port List (RPL) IOCB received as an ELS
* unsolicited event. It first checks the remote port state. If the remote
* port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
* invokes the lpfc_els_rsp_reject() routine to send reject response.
* Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
* to accept the RPL.
*
* Return code
* 0 - Successfully processed rpl iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
uint32_t maxsize;
uint16_t cmdsize;
RPL *rpl;
struct ls_rjt stat;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
/* issue rejection response */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
/* rejected the unsolicited RPL request and done with it */
return 0;
}
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
rpl = (RPL *) (lp + 1);
maxsize = be32_to_cpu(rpl->maxsize);
/* We support only one port */
if ((rpl->index == 0) &&
((maxsize == 0) ||
((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
} else {
cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
}
lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
return 0;
}
/**
* lpfc_els_rcv_farp - Process an unsolicited farp request els command
* @vport: pointer to a virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Fibre Channel Address Resolution Protocol
* (FARP) Request IOCB received as an ELS unsolicited event. Currently,
* the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
* FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
* Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
* remote PortName is compared against the FC PortName stored in the @vport
* data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
* compared against the FC NodeName stored in the @vport data structure.
* If any of these matches and the FARP_REQUEST_FARPR flag is set in the
* FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
* invoked to send out FARP Response to the remote node. Before sending the
* FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
* request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
* routine is invoked to log into the remote port first.
*
* Return code
* 0 - Either the FARP Match Mode not supported or successfully processed
**/
static int
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
FARP *fp;
uint32_t cmd, cnt, did;
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
fp = (FARP *) lp;
/* FARP-REQ received from DID <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0601 FARP-REQ received from DID x%x\n", did);
/* We will only support match on WWPN or WWNN */
if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
return 0;
}
cnt = 0;
/* If this FARP command is searching for my portname */
if (fp->Mflags & FARP_MATCH_PORT) {
if (memcmp(&fp->RportName, &vport->fc_portname,
sizeof(struct lpfc_name)) == 0)
cnt = 1;
}
/* If this FARP command is searching for my nodename */
if (fp->Mflags & FARP_MATCH_NODE) {
if (memcmp(&fp->RnodeName, &vport->fc_nodename,
sizeof(struct lpfc_name)) == 0)
cnt = 1;
}
if (cnt) {
if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
(ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
/* Log back into the node before sending the FARP. */
if (fp->Rflags & FARP_REQUEST_PLOGI) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
}
/* Send a FARP response to that node */
if (fp->Rflags & FARP_REQUEST_FARPR)
lpfc_issue_els_farpr(vport, did, 0);
}
}
return 0;
}
/**
* lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Fibre Channel Address Resolution Protocol
* Response (FARPR) IOCB received as an ELS unsolicited event. It simply
* invokes the lpfc_els_rsp_acc() routine to the remote node to accept
* the FARP response request.
*
* Return code
* 0 - Successfully processed FARPR IOCB (currently always return 0)
**/
static int
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
uint32_t cmd, did;
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
/* FARP-RSP received from DID <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0600 FARP-RSP received from DID x%x\n", did);
/* ACCEPT the Farp resp request */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
}
/**
* lpfc_els_rcv_fan - Process an unsolicited fan iocb command
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @fan_ndlp: pointer to a node-list data structure.
*
* This routine processes a Fabric Address Notification (FAN) IOCB
* command received as an ELS unsolicited event. The FAN ELS command will
* only be processed on a physical port (i.e., the @vport represents the
* physical port). The fabric NodeName and PortName from the FAN IOCB are
* compared against those in the phba data structure. If any of those is
* different, the lpfc_initial_flogi() routine is invoked to initialize
* Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
* if both of those are identical, the lpfc_issue_fabric_reglogin() routine
* is invoked to register login to the fabric.
*
* Return code
* 0 - Successfully processed fan iocb (currently always return 0).
**/
static int
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *fan_ndlp)
{
struct lpfc_hba *phba = vport->phba;
uint32_t *lp;
FAN *fp;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
fp = (FAN *) ++lp;
/* FAN received; Fan does not have a reply sequence */
if ((vport == phba->pport) &&
(vport->port_state == LPFC_LOCAL_CFG_LINK)) {
if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
sizeof(struct lpfc_name))) ||
(memcmp(&phba->fc_fabparam.portName, &fp->FportName,
sizeof(struct lpfc_name)))) {
/* This port has switched fabrics. FLOGI is required */
lpfc_issue_init_vfi(vport);
} else {
/* FAN verified - skip FLOGI */
vport->fc_myDID = vport->fc_prevDID;
if (phba->sli_rev < LPFC_SLI_REV4)
lpfc_issue_fabric_reglogin(vport);
else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3138 Need register VFI: (x%x/%x)\n",
vport->fc_prevDID, vport->fc_myDID);
lpfc_issue_reg_vfi(vport);
}
}
}
return 0;
}
/**
* lpfc_els_timeout - Handler funciton to the els timer
* @ptr: holder for the timer function associated data.
*
* This routine is invoked by the ELS timer after timeout. It posts the ELS
* timer timeout event by setting the WORKER_ELS_TMO bit to the work port
* event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
* up the worker thread. It is for the worker thread to invoke the routine
* lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
**/
void
lpfc_els_timeout(unsigned long ptr)
{
struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
struct lpfc_hba *phba = vport->phba;
uint32_t tmo_posted;
unsigned long iflag;
spin_lock_irqsave(&vport->work_port_lock, iflag);
tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
vport->work_port_events |= WORKER_ELS_TMO;
spin_unlock_irqrestore(&vport->work_port_lock, iflag);
if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
lpfc_worker_wake_up(phba);
return;
}
/**
* lpfc_els_timeout_handler - Process an els timeout event
* @vport: pointer to a virtual N_Port data structure.
*
* This routine is the actual handler function that processes an ELS timeout
* event. It walks the ELS ring to get and abort all the IOCBs (except the
* ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
* invoking the lpfc_sli_issue_abort_iotag() routine.
**/
void
lpfc_els_timeout_handler(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL;
struct lpfc_dmabuf *pcmd;
uint32_t els_command = 0;
uint32_t timeout;
uint32_t remote_ID = 0xffffffff;
LIST_HEAD(abort_list);
timeout = (uint32_t)(phba->fc_ratov << 1);
pring = &phba->sli.ring[LPFC_ELS_RING];
if ((phba->pport->load_flag & FC_UNLOADING))
return;
spin_lock_irq(&phba->hbalock);
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
if ((phba->pport->load_flag & FC_UNLOADING)) {
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irq(&phba->hbalock);
return;
}
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
cmd = &piocb->iocb;
if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
continue;
if (piocb->vport != vport)
continue;
pcmd = (struct lpfc_dmabuf *) piocb->context2;
if (pcmd)
els_command = *(uint32_t *) (pcmd->virt);
if (els_command == ELS_CMD_FARP ||
els_command == ELS_CMD_FARPR ||
els_command == ELS_CMD_FDISC)
continue;
if (piocb->drvrTimeout > 0) {
if (piocb->drvrTimeout >= timeout)
piocb->drvrTimeout -= timeout;
else
piocb->drvrTimeout = 0;
continue;
}
remote_ID = 0xffffffff;
if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
remote_ID = cmd->un.elsreq64.remoteID;
else {
struct lpfc_nodelist *ndlp;
ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
if (ndlp && NLP_CHK_NODE_ACT(ndlp))
remote_ID = ndlp->nlp_DID;
}
list_add_tail(&piocb->dlist, &abort_list);
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irq(&phba->hbalock);
list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
cmd = &piocb->iocb;
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0127 ELS timeout Data: x%x x%x x%x "
"x%x\n", els_command,
remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
spin_lock_irq(&phba->hbalock);
list_del_init(&piocb->dlist);
lpfc_sli_issue_abort_iotag(phba, pring, piocb);
spin_unlock_irq(&phba->hbalock);
}
if (!list_empty(&phba->sli.ring[LPFC_ELS_RING].txcmplq))
if (!(phba->pport->load_flag & FC_UNLOADING))
mod_timer(&vport->els_tmofunc,
jiffies + msecs_to_jiffies(1000 * timeout));
}
/**
* lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine is used to clean up all the outstanding ELS commands on a
* @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
* routine. After that, it walks the ELS transmit queue to remove all the
* IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
* the IOCBs with a non-NULL completion callback function, the callback
* function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
* un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
* callback function, the IOCB will simply be released. Finally, it walks
* the ELS transmit completion queue to issue an abort IOCB to any transmit
* completion queue IOCB that is associated with the @vport and is not
* an IOCB from libdfc (i.e., the management plane IOCBs that are not
* part of the discovery state machine) out to HBA by invoking the
* lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
* abort IOCB to any transmit completion queueed IOCB, it does not guarantee
* the IOCBs are aborted when this function returns.
**/
void
lpfc_els_flush_cmd(struct lpfc_vport *vport)
{
LIST_HEAD(abort_list);
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL;
lpfc_fabric_abort_vport(vport);
/*
* For SLI3, only the hbalock is required. But SLI4 needs to coordinate
* with the ring insert operation. Because lpfc_sli_issue_abort_iotag
* ultimately grabs the ring_lock, the driver must splice the list into
* a working list and release the locks before calling the abort.
*/
spin_lock_irq(&phba->hbalock);
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
if (piocb->iocb_flag & LPFC_IO_LIBDFC)
continue;
if (piocb->vport != vport)
continue;
list_add_tail(&piocb->dlist, &abort_list);
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irq(&phba->hbalock);
/* Abort each iocb on the aborted list and remove the dlist links. */
list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
spin_lock_irq(&phba->hbalock);
list_del_init(&piocb->dlist);
lpfc_sli_issue_abort_iotag(phba, pring, piocb);
spin_unlock_irq(&phba->hbalock);
}
if (!list_empty(&abort_list))
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"3387 abort list for txq not empty\n");
INIT_LIST_HEAD(&abort_list);
spin_lock_irq(&phba->hbalock);
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
cmd = &piocb->iocb;
if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
continue;
}
/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
cmd->ulpCommand == CMD_ABORT_XRI_CN)
continue;
if (piocb->vport != vport)
continue;
list_del_init(&piocb->list);
list_add_tail(&piocb->list, &abort_list);
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irq(&phba->hbalock);
/* Cancell all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &abort_list,
IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
return;
}
/**
* lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
* @phba: pointer to lpfc hba data structure.
*
* This routine is used to clean up all the outstanding ELS commands on a
* @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
* routine. After that, it walks the ELS transmit queue to remove all the
* IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
* the IOCBs with the completion callback function associated, the callback
* function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
* un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
* callback function associated, the IOCB will simply be released. Finally,
* it walks the ELS transmit completion queue to issue an abort IOCB to any
* transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
* management plane IOCBs that are not part of the discovery state machine)
* out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
**/
void
lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
{
struct lpfc_vport *vport;
list_for_each_entry(vport, &phba->port_list, listentry)
lpfc_els_flush_cmd(vport);
return;
}
/**
* lpfc_send_els_failure_event - Posts an ELS command failure event
* @phba: Pointer to hba context object.
* @cmdiocbp: Pointer to command iocb which reported error.
* @rspiocbp: Pointer to response iocb which reported error.
*
* This function sends an event when there is an ELS command
* failure.
**/
void
lpfc_send_els_failure_event(struct lpfc_hba *phba,
struct lpfc_iocbq *cmdiocbp,
struct lpfc_iocbq *rspiocbp)
{
struct lpfc_vport *vport = cmdiocbp->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_lsrjt_event lsrjt_event;
struct lpfc_fabric_event_header fabric_event;
struct ls_rjt stat;
struct lpfc_nodelist *ndlp;
uint32_t *pcmd;
ndlp = cmdiocbp->context1;
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
return;
if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
sizeof(struct lpfc_name));
memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
sizeof(struct lpfc_name));
pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
cmdiocbp->context2)->virt);
lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
fc_host_post_vendor_event(shost,
fc_get_event_number(),
sizeof(lsrjt_event),
(char *)&lsrjt_event,
LPFC_NL_VENDOR_ID);
return;
}
if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
(rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
fabric_event.event_type = FC_REG_FABRIC_EVENT;
if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
else
fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
sizeof(struct lpfc_name));
memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
sizeof(struct lpfc_name));
fc_host_post_vendor_event(shost,
fc_get_event_number(),
sizeof(fabric_event),
(char *)&fabric_event,
LPFC_NL_VENDOR_ID);
return;
}
}
/**
* lpfc_send_els_event - Posts unsolicited els event
* @vport: Pointer to vport object.
* @ndlp: Pointer FC node object.
* @cmd: ELS command code.
*
* This function posts an event when there is an incoming
* unsolicited ELS command.
**/
static void
lpfc_send_els_event(struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp,
uint32_t *payload)
{
struct lpfc_els_event_header *els_data = NULL;
struct lpfc_logo_event *logo_data = NULL;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (*payload == ELS_CMD_LOGO) {
logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
if (!logo_data) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0148 Failed to allocate memory "
"for LOGO event\n");
return;
}
els_data = &logo_data->header;
} else {
els_data = kmalloc(sizeof(struct lpfc_els_event_header),
GFP_KERNEL);
if (!els_data) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0149 Failed to allocate memory "
"for ELS event\n");
return;
}
}
els_data->event_type = FC_REG_ELS_EVENT;
switch (*payload) {
case ELS_CMD_PLOGI:
els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
break;
case ELS_CMD_PRLO:
els_data->subcategory = LPFC_EVENT_PRLO_RCV;
break;
case ELS_CMD_ADISC:
els_data->subcategory = LPFC_EVENT_ADISC_RCV;
break;
case ELS_CMD_LOGO:
els_data->subcategory = LPFC_EVENT_LOGO_RCV;
/* Copy the WWPN in the LOGO payload */
memcpy(logo_data->logo_wwpn, &payload[2],
sizeof(struct lpfc_name));
break;
default:
kfree(els_data);
return;
}
memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
if (*payload == ELS_CMD_LOGO) {
fc_host_post_vendor_event(shost,
fc_get_event_number(),
sizeof(struct lpfc_logo_event),
(char *)logo_data,
LPFC_NL_VENDOR_ID);
kfree(logo_data);
} else {
fc_host_post_vendor_event(shost,
fc_get_event_number(),
sizeof(struct lpfc_els_event_header),
(char *)els_data,
LPFC_NL_VENDOR_ID);
kfree(els_data);
}
return;
}
/**
* lpfc_els_unsol_buffer - Process an unsolicited event data buffer
* @phba: pointer to lpfc hba data structure.
* @pring: pointer to a SLI ring.
* @vport: pointer to a host virtual N_Port data structure.
* @elsiocb: pointer to lpfc els command iocb data structure.
*
* This routine is used for processing the IOCB associated with a unsolicited
* event. It first determines whether there is an existing ndlp that matches
* the DID from the unsolicited IOCB. If not, it will create a new one with
* the DID from the unsolicited IOCB. The ELS command from the unsolicited
* IOCB is then used to invoke the proper routine and to set up proper state
* of the discovery state machine.
**/
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
{
struct Scsi_Host *shost;
struct lpfc_nodelist *ndlp;
struct ls_rjt stat;
uint32_t *payload;
uint32_t cmd, did, newnode;
uint8_t rjt_exp, rjt_err = 0;
IOCB_t *icmd = &elsiocb->iocb;
if (!vport || !(elsiocb->context2))
goto dropit;
newnode = 0;
payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
cmd = *payload;
if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
lpfc_post_buffer(phba, pring, 1);
did = icmd->un.rcvels.remoteID;
if (icmd->ulpStatus) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV Unsol ELS: status:x%x/x%x did:x%x",
icmd->ulpStatus, icmd->un.ulpWord[4], did);
goto dropit;
}
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(vport))
goto dropit;
/* Ignore traffic received during vport shutdown. */
if (vport->load_flag & FC_UNLOADING)
goto dropit;
/* If NPort discovery is delayed drop incoming ELS */
if ((vport->fc_flag & FC_DISC_DELAYED) &&
(cmd != ELS_CMD_PLOGI))
goto dropit;
ndlp = lpfc_findnode_did(vport, did);
if (!ndlp) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
goto dropit;
lpfc_nlp_init(vport, ndlp, did);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1;
if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
ndlp->nlp_type |= NLP_FABRIC;
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp,
NLP_STE_UNUSED_NODE);
if (!ndlp)
goto dropit;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1;
if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
ndlp->nlp_type |= NLP_FABRIC;
} else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
/* This is similar to the new node path */
ndlp = lpfc_nlp_get(ndlp);
if (!ndlp)
goto dropit;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1;
}
phba->fc_stat.elsRcvFrame++;
/*
* Do not process any unsolicited ELS commands
* if the ndlp is in DEV_LOSS
*/
shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) {
spin_unlock_irq(shost->host_lock);
goto dropit;
}
spin_unlock_irq(shost->host_lock);
elsiocb->context1 = lpfc_nlp_get(ndlp);
elsiocb->vport = vport;
if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
cmd &= ELS_CMD_MASK;
}
/* ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0112 ELS command x%x received from NPORT x%x "
"Data: x%x x%x x%x x%x\n",
cmd, did, vport->port_state, vport->fc_flag,
vport->fc_myDID, vport->fc_prevDID);
/* reject till our FLOGI completes */
if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
(cmd != ELS_CMD_FLOGI)) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
goto lsrjt;
}
switch (cmd) {
case ELS_CMD_PLOGI:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV PLOGI: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvPLOGI++;
ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
if (phba->sli_rev == LPFC_SLI_REV4 &&
(phba->pport->fc_flag & FC_PT2PT)) {
vport->fc_prevDID = vport->fc_myDID;
/* Our DID needs to be updated before registering
* the vfi. This is done in lpfc_rcv_plogi but
* that is called after the reg_vfi.
*/
vport->fc_myDID = elsiocb->iocb.un.rcvels.parmRo;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3312 Remote port assigned DID x%x "
"%x\n", vport->fc_myDID,
vport->fc_prevDID);
}
lpfc_send_els_event(vport, ndlp, payload);
/* If Nport discovery is delayed, reject PLOGIs */
if (vport->fc_flag & FC_DISC_DELAYED) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
if (vport->port_state < LPFC_DISC_AUTH) {
if (!(phba->pport->fc_flag & FC_PT2PT) ||
(phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
}
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
spin_unlock_irq(shost->host_lock);
lpfc_disc_state_machine(vport, ndlp, elsiocb,
NLP_EVT_RCV_PLOGI);
break;
case ELS_CMD_FLOGI:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV FLOGI: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvFLOGI++;
lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_LOGO:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV LOGO: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvLOGO++;
lpfc_send_els_event(vport, ndlp, payload);
if (vport->port_state < LPFC_DISC_AUTH) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
break;
case ELS_CMD_PRLO:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV PRLO: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvPRLO++;
lpfc_send_els_event(vport, ndlp, payload);
if (vport->port_state < LPFC_DISC_AUTH) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
break;
case ELS_CMD_LCB:
phba->fc_stat.elsRcvLCB++;
lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
break;
case ELS_CMD_RDP:
phba->fc_stat.elsRcvRDP++;
lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
break;
case ELS_CMD_RSCN:
phba->fc_stat.elsRcvRSCN++;
lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_ADISC:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV ADISC: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
lpfc_send_els_event(vport, ndlp, payload);
phba->fc_stat.elsRcvADISC++;
if (vport->port_state < LPFC_DISC_AUTH) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
lpfc_disc_state_machine(vport, ndlp, elsiocb,
NLP_EVT_RCV_ADISC);
break;
case ELS_CMD_PDISC:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV PDISC: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvPDISC++;
if (vport->port_state < LPFC_DISC_AUTH) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
lpfc_disc_state_machine(vport, ndlp, elsiocb,
NLP_EVT_RCV_PDISC);
break;
case ELS_CMD_FARPR:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV FARPR: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvFARPR++;
lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
break;
case ELS_CMD_FARP:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV FARP: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvFARP++;
lpfc_els_rcv_farp(vport, elsiocb, ndlp);
break;
case ELS_CMD_FAN:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV FAN: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvFAN++;
lpfc_els_rcv_fan(vport, elsiocb, ndlp);
break;
case ELS_CMD_PRLI:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV PRLI: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvPRLI++;
if (vport->port_state < LPFC_DISC_AUTH) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
break;
case ELS_CMD_LIRR:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV LIRR: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvLIRR++;
lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RLS:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RLS: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRLS++;
lpfc_els_rcv_rls(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RPS:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RPS: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRPS++;
lpfc_els_rcv_rps(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RPL:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RPL: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRPL++;
lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RNID:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RNID: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRNID++;
lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RTV:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RTV: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRTV++;
lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_RRQ:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RRQ: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvRRQ++;
lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_ECHO:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV ECHO: did:x%x/ste:x%x flg:x%x",
did, vport->port_state, ndlp->nlp_flag);
phba->fc_stat.elsRcvECHO++;
lpfc_els_rcv_echo(vport, elsiocb, ndlp);
if (newnode)
lpfc_nlp_put(ndlp);
break;
case ELS_CMD_REC:
/* receive this due to exchange closed */
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_INVALID_OX_RX;
break;
default:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
cmd, did, vport->port_state);
/* Unsupported ELS command, reject */
rjt_err = LSRJT_CMD_UNSUPPORTED;
rjt_exp = LSEXP_NOTHING_MORE;
/* Unknown ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0115 Unknown ELS command x%x "
"received from NPORT x%x\n", cmd, did);
if (newnode)
lpfc_nlp_put(ndlp);
break;
}
lsrjt:
/* check if need to LS_RJT received ELS cmd */
if (rjt_err) {
memset(&stat, 0, sizeof(stat));
stat.un.b.lsRjtRsnCode = rjt_err;
stat.un.b.lsRjtRsnCodeExp = rjt_exp;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
NULL);
}
lpfc_nlp_put(elsiocb->context1);
elsiocb->context1 = NULL;
return;
dropit:
if (vport && !(vport->load_flag & FC_UNLOADING))
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0111 Dropping received ELS cmd "
"Data: x%x x%x x%x\n",
icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
phba->fc_stat.elsRcvDrop++;
}
/**
* lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
* @phba: pointer to lpfc hba data structure.
* @pring: pointer to a SLI ring.
* @elsiocb: pointer to lpfc els iocb data structure.
*
* This routine is used to process an unsolicited event received from a SLI
* (Service Level Interface) ring. The actual processing of the data buffer
* associated with the unsolicited event is done by invoking the routine
* lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
* SLI ring on which the unsolicited event was received.
**/
void
lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *elsiocb)
{
struct lpfc_vport *vport = phba->pport;
IOCB_t *icmd = &elsiocb->iocb;
dma_addr_t paddr;
struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
elsiocb->context1 = NULL;
elsiocb->context2 = NULL;
elsiocb->context3 = NULL;
if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
} else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
(icmd->un.ulpWord[4] & IOERR_PARAM_MASK) ==
IOERR_RCV_BUFFER_WAITING) {
phba->fc_stat.NoRcvBuf++;
/* Not enough posted buffers; Try posting more buffers */
if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
lpfc_post_buffer(phba, pring, 0);
return;
}
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
if (icmd->unsli3.rcvsli3.vpi == 0xffff)
vport = phba->pport;
else
vport = lpfc_find_vport_by_vpid(phba,
icmd->unsli3.rcvsli3.vpi);
}
/* If there are no BDEs associated
* with this IOCB, there is nothing to do.
*/
if (icmd->ulpBdeCount == 0)
return;
/* type of ELS cmd is first 32bit word
* in packet
*/
if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
elsiocb->context2 = bdeBuf1;
} else {
paddr = getPaddr(icmd->un.cont64[0].addrHigh,
icmd->un.cont64[0].addrLow);
elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
paddr);
}
lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
/*
* The different unsolicited event handlers would tell us
* if they are done with "mp" by setting context2 to NULL.
*/
if (elsiocb->context2) {
lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
elsiocb->context2 = NULL;
}
/* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
icmd->ulpBdeCount == 2) {
elsiocb->context2 = bdeBuf2;
lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
/* free mp if we are done with it */
if (elsiocb->context2) {
lpfc_in_buf_free(phba, elsiocb->context2);
elsiocb->context2 = NULL;
}
}
}
/**
* lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
* @phba: pointer to lpfc hba data structure.
* @vport: pointer to a virtual N_Port data structure.
*
* This routine issues a Port Login (PLOGI) to the Name Server with
* State Change Request (SCR) for a @vport. This routine will create an
* ndlp for the Name Server associated to the @vport if such node does
* not already exist. The PLOGI to Name Server is issued by invoking the
* lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
* (FDMI) is configured to the @vport, a FDMI node will be created and
* the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
**/
void
lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp, *ndlp_fdmi;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
/*
* If lpfc_delay_discovery parameter is set and the clean address
* bit is cleared and fc fabric parameters chenged, delay FC NPort
* discovery.
*/
spin_lock_irq(shost->host_lock);
if (vport->fc_flag & FC_DISC_DELAYED) {
spin_unlock_irq(shost->host_lock);
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"3334 Delay fc port discovery for %d seconds\n",
phba->fc_ratov);
mod_timer(&vport->delayed_disc_tmo,
jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
return;
}
spin_unlock_irq(shost->host_lock);
ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (!ndlp) {
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp) {
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
lpfc_disc_start(vport);
return;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0251 NameServer login: no memory\n");
return;
}
lpfc_nlp_init(vport, ndlp, NameServer_DID);
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
if (!ndlp) {
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
lpfc_disc_start(vport);
return;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0348 NameServer login: node freed\n");
return;
}
}
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0252 Cannot issue NameServer login\n");
return;
}
if (vport->cfg_fdmi_on & LPFC_FDMI_SUPPORT) {
/* If this is the first time, allocate an ndlp and initialize
* it. Otherwise, make sure the node is enabled and then do the
* login.
*/
ndlp_fdmi = lpfc_findnode_did(vport, FDMI_DID);
if (!ndlp_fdmi) {
ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
GFP_KERNEL);
if (ndlp_fdmi) {
lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
ndlp_fdmi->nlp_type |= NLP_FABRIC;
} else
return;
}
if (!NLP_CHK_NODE_ACT(ndlp_fdmi))
ndlp_fdmi = lpfc_enable_node(vport,
ndlp_fdmi,
NLP_STE_NPR_NODE);
if (ndlp_fdmi) {
lpfc_nlp_set_state(vport, ndlp_fdmi,
NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID, 0);
}
}
}
/**
* lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function to register new vport
* mailbox command. If the new vport mailbox command completes successfully,
* the fabric registration login shall be performed on physical port (the
* new vport created is actually a physical port, with VPI 0) or the port
* login to Name Server for State Change Request (SCR) will be performed
* on virtual port (real virtual port, with VPI greater than 0).
**/
static void
lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
MAILBOX_t *mb = &pmb->u.mb;
int rc;
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
if (mb->mbxStatus) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0915 Register VPI failed : Status: x%x"
" upd bit: x%x \n", mb->mbxStatus,
mb->un.varRegVpi.upd);
if (phba->sli_rev == LPFC_SLI_REV4 &&
mb->un.varRegVpi.upd)
goto mbox_err_exit ;
switch (mb->mbxStatus) {
case 0x11: /* unsupported feature */
case 0x9603: /* max_vpi exceeded */
case 0x9602: /* Link event since CLEAR_LA */
/* giving up on vport registration */
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
break;
/* If reg_vpi fail with invalid VPI status, re-init VPI */
case 0x20:
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
lpfc_init_vpi(phba, pmb, vport->vpi);
pmb->vport = vport;
pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
rc = lpfc_sli_issue_mbox(phba, pmb,
MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_printf_vlog(vport,
KERN_ERR, LOG_MBOX,
"2732 Failed to issue INIT_VPI"
" mailbox command\n");
} else {
lpfc_nlp_put(ndlp);
return;
}
default:
/* Try to recover from this error */
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
if (vport->port_type == LPFC_PHYSICAL_PORT
&& !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
lpfc_issue_init_vfi(vport);
else
lpfc_initial_fdisc(vport);
break;
}
} else {
spin_lock_irq(shost->host_lock);
vport->vpi_state |= LPFC_VPI_REGISTERED;
spin_unlock_irq(shost->host_lock);
if (vport == phba->pport) {
if (phba->sli_rev < LPFC_SLI_REV4)
lpfc_issue_fabric_reglogin(vport);
else {
/*
* If the physical port is instantiated using
* FDISC, do not start vport discovery.
*/
if (vport->port_state != LPFC_FDISC)
lpfc_start_fdiscs(phba);
lpfc_do_scr_ns_plogi(phba, vport);
}
} else
lpfc_do_scr_ns_plogi(phba, vport);
}
mbox_err_exit:
/* Now, we decrement the ndlp reference count held for this
* callback function
*/
lpfc_nlp_put(ndlp);
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
/**
* lpfc_register_new_vport - Register a new vport with a HBA
* @phba: pointer to lpfc hba data structure.
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine registers the @vport as a new virtual port with a HBA.
* It is done through a registering vpi mailbox command.
**/
void
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
LPFC_MBOXQ_t *mbox;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
lpfc_reg_vpi(vport, mbox);
mbox->vport = vport;
mbox->context2 = lpfc_nlp_get(ndlp);
mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
/* mailbox command not success, decrement ndlp
* reference count for this command
*/
lpfc_nlp_put(ndlp);
mempool_free(mbox, phba->mbox_mem_pool);
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0253 Register VPI: Can't send mbox\n");
goto mbox_err_exit;
}
} else {
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0254 Register VPI: no memory\n");
goto mbox_err_exit;
}
return;
mbox_err_exit:
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
return;
}
/**
* lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
* @phba: pointer to lpfc hba data structure.
*
* This routine cancels the retry delay timers to all the vports.
**/
void
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
{
struct lpfc_vport **vports;
struct lpfc_nodelist *ndlp;
uint32_t link_state;
int i;
/* Treat this failure as linkdown for all vports */
link_state = phba->link_state;
lpfc_linkdown(phba);
phba->link_state = link_state;
vports = lpfc_create_vport_work_array(phba);
if (vports) {
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
if (ndlp)
lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
lpfc_els_flush_cmd(vports[i]);
}
lpfc_destroy_vport_work_array(phba, vports);
}
}
/**
* lpfc_retry_pport_discovery - Start timer to retry FLOGI.
* @phba: pointer to lpfc hba data structure.
*
* This routine abort all pending discovery commands and
* start a timer to retry FLOGI for the physical port
* discovery.
**/
void
lpfc_retry_pport_discovery(struct lpfc_hba *phba)
{
struct lpfc_nodelist *ndlp;
struct Scsi_Host *shost;
/* Cancel the all vports retry delay retry timers */
lpfc_cancel_all_vport_retry_delay_timer(phba);
/* If fabric require FLOGI, then re-instantiate physical login */
ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
if (!ndlp)
return;
shost = lpfc_shost_from_vport(phba->pport);
mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
phba->pport->port_state = LPFC_FLOGI;
return;
}
/**
* lpfc_fabric_login_reqd - Check if FLOGI required.
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to FDISC command iocb.
* @rspiocb: pointer to FDISC response iocb.
*
* This routine checks if a FLOGI is reguired for FDISC
* to succeed.
**/
static int
lpfc_fabric_login_reqd(struct lpfc_hba *phba,
struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
(rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
return 0;
else
return 1;
}
/**
* lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion callback function to a Fabric Discover
* (FDISC) ELS command. Since all the FDISC ELS commands are issued
* single threaded, each FDISC completion callback function will reset
* the discovery timer for all vports such that the timers will not get
* unnecessary timeout. The function checks the FDISC IOCB status. If error
* detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
* vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
* assigned to the vport has been changed with the completion of the FDISC
* command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
* are unregistered from the HBA, and then the lpfc_register_new_vport()
* routine is invoked to register new vport with the HBA. Otherwise, the
* lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
* Server for State Change Request (SCR).
**/
static void
lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
struct lpfc_nodelist *np;
struct lpfc_nodelist *next_np;
IOCB_t *irsp = &rspiocb->iocb;
struct lpfc_iocbq *piocb;
struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
struct serv_parm *sp;
uint8_t fabric_param_changed;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0123 FDISC completes. x%x/x%x prevDID: x%x\n",
irsp->ulpStatus, irsp->un.ulpWord[4],
vport->fc_prevDID);
/* Since all FDISCs are being single threaded, we
* must reset the discovery timer for ALL vports
* waiting to send FDISC when one completes.
*/
list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
lpfc_set_disctmo(piocb->vport);
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"FDISC cmpl: status:x%x/x%x prevdid:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
if (irsp->ulpStatus) {
if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
lpfc_retry_pport_discovery(phba);
goto out;
}
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb))
goto out;
/* FDISC failed */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0126 FDISC failed. (x%x/x%x)\n",
irsp->ulpStatus, irsp->un.ulpWord[4]);
goto fdisc_failed;
}
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
vport->fc_flag |= FC_FABRIC;
if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
vport->fc_flag |= FC_PUBLIC_LOOP;
spin_unlock_irq(shost->host_lock);
vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
if (!prsp)
goto out;
sp = prsp->virt + sizeof(uint32_t);
fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
memcpy(&vport->fabric_portname, &sp->portName,
sizeof(struct lpfc_name));
memcpy(&vport->fabric_nodename, &sp->nodeName,
sizeof(struct lpfc_name));
if (fabric_param_changed &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
/* If our NportID changed, we need to ensure all
* remaining NPORTs get unreg_login'ed so we can
* issue unreg_vpi.
*/
list_for_each_entry_safe(np, next_np,
&vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp) ||
(np->nlp_state != NLP_STE_NPR_NODE) ||
!(np->nlp_flag & NLP_NPR_ADISC))
continue;
spin_lock_irq(shost->host_lock);
np->nlp_flag &= ~NLP_NPR_ADISC;
spin_unlock_irq(shost->host_lock);
lpfc_unreg_rpi(vport, np);
}
lpfc_cleanup_pending_mbox(vport);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
if (phba->sli_rev == LPFC_SLI_REV4)
vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
else
vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
spin_unlock_irq(shost->host_lock);
} else if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
/*
* Driver needs to re-reg VPI in order for f/w
* to update the MAC address.
*/
lpfc_register_new_vport(phba, vport, ndlp);
goto out;
}
if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
lpfc_issue_init_vpi(vport);
else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
lpfc_register_new_vport(phba, vport, ndlp);
else
lpfc_do_scr_ns_plogi(phba, vport);
goto out;
fdisc_failed:
if (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS)
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
/* Cancel discovery timer */
lpfc_can_disctmo(vport);
lpfc_nlp_put(ndlp);
out:
lpfc_els_free_iocb(phba, cmdiocb);
}
/**
* lpfc_issue_els_fdisc - Issue a fdisc iocb command
* @vport: pointer to a virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @retry: number of retries to the command IOCB.
*
* This routine prepares and issues a Fabric Discover (FDISC) IOCB to
* a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
* routine to issue the IOCB, which makes sure only one outstanding fabric
* IOCB will be sent off HBA at any given time.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the FDISC ELS command.
*
* Return code
* 0 - Successfully issued fdisc iocb command
* 1 - Failed to issue fdisc iocb command
**/
static int
lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct serv_parm *sp;
uint8_t *pcmd;
uint16_t cmdsize;
int did = ndlp->nlp_DID;
int rc;
vport->port_state = LPFC_FDISC;
vport->fc_myDID = 0;
cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
ELS_CMD_FDISC);
if (!elsiocb) {
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0255 Issue FDISC: no IOCB\n");
return 1;
}
icmd = &elsiocb->iocb;
icmd->un.elsreq64.myID = 0;
icmd->un.elsreq64.fl = 1;
/*
* SLI3 ports require a different context type value than SLI4.
* Catch SLI3 ports here and override the prep.
*/
if (phba->sli_rev == LPFC_SLI_REV3) {
icmd->ulpCt_h = 1;
icmd->ulpCt_l = 0;
}
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
pcmd += sizeof(uint32_t); /* CSP Word 1 */
memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
sp = (struct serv_parm *) pcmd;
/* Setup CSPs accordingly for Fabric */
sp->cmn.e_d_tov = 0;
sp->cmn.w2.r_a_tov = 0;
sp->cmn.virtual_fabric_support = 0;
sp->cls1.classValid = 0;
sp->cls2.seqDelivery = 1;
sp->cls3.seqDelivery = 1;
pcmd += sizeof(uint32_t); /* CSP Word 2 */
pcmd += sizeof(uint32_t); /* CSP Word 3 */
pcmd += sizeof(uint32_t); /* CSP Word 4 */
pcmd += sizeof(uint32_t); /* Port Name */
memcpy(pcmd, &vport->fc_portname, 8);
pcmd += sizeof(uint32_t); /* Node Name */
pcmd += sizeof(uint32_t); /* Node Name */
memcpy(pcmd, &vport->fc_nodename, 8);
lpfc_set_disctmo(vport);
phba->fc_stat.elsXmitFDISC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue FDISC: did:x%x",
did, 0, 0);
rc = lpfc_issue_fabric_iocb(phba, elsiocb);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0256 Issue FDISC: Cannot send IOCB\n");
return 1;
}
lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
return 0;
}
/**
* lpfc_cmpl_els_npiv_logo - Completion function with vport logo
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the completion callback function to the issuing of a LOGO
* ELS command off a vport. It frees the command IOCB and then decrement the
* reference count held on ndlp for this completion function, indicating that
* the reference to the ndlp is no long needed. Note that the
* lpfc_els_free_iocb() routine decrements the ndlp reference held for this
* callback function and an additional explicit ndlp reference decrementation
* will trigger the actual release of the ndlp.
**/
static void
lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp;
struct lpfc_nodelist *ndlp;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
irsp = &rspiocb->iocb;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"LOGO npiv cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
lpfc_els_free_iocb(phba, cmdiocb);
vport->unreg_vpi_cmpl = VPORT_ERROR;
/* Trigger the release of the ndlp after logo */
lpfc_nlp_put(ndlp);
/* NPIV LOGO completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2928 NPIV LOGO completes to NPort x%x "
"Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout, vport->num_disc_nodes);
if (irsp->ulpStatus == IOSTAT_SUCCESS) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
vport->fc_flag &= ~FC_FABRIC;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
}
}
/**
* lpfc_issue_els_npiv_logo - Issue a logo off a vport
* @vport: pointer to a virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine issues a LOGO ELS command to an @ndlp off a @vport.
*
* Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
* will be incremented by 1 for holding the ndlp and the reference to ndlp
* will be stored into the context1 field of the IOCB for the completion
* callback function to the LOGO ELS command.
*
* Return codes
* 0 - Successfully issued logo off the @vport
* 1 - Failed to issue logo off the @vport
**/
int
lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
ELS_CMD_LOGO);
if (!elsiocb)
return 1;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
pcmd += sizeof(uint32_t);
/* Fill in LOGO payload */
*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue LOGO npiv did:x%x flg:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, 0);
elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_LOGO_SND;
spin_unlock_irq(shost->host_lock);
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_LOGO_SND;
spin_unlock_irq(shost->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return 1;
}
return 0;
}
/**
* lpfc_fabric_block_timeout - Handler function to the fabric block timer
* @ptr: holder for the timer function associated data.
*
* This routine is invoked by the fabric iocb block timer after
* timeout. It posts the fabric iocb block timeout event by setting the
* WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
* lpfc_worker_wake_up() routine to wake up the worker thread. It is for
* the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
* posted event WORKER_FABRIC_BLOCK_TMO.
**/
void
lpfc_fabric_block_timeout(unsigned long ptr)
{
struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
unsigned long iflags;
uint32_t tmo_posted;
spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
if (!tmo_posted)
phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
if (!tmo_posted)
lpfc_worker_wake_up(phba);
return;
}
/**
* lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
* @phba: pointer to lpfc hba data structure.
*
* This routine issues one fabric iocb from the driver internal list to
* the HBA. It first checks whether it's ready to issue one fabric iocb to
* the HBA (whether there is no outstanding fabric iocb). If so, it shall
* remove one pending fabric iocb from the driver internal list and invokes
* lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
**/
static void
lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
{
struct lpfc_iocbq *iocb;
unsigned long iflags;
int ret;
IOCB_t *cmd;
repeat:
iocb = NULL;
spin_lock_irqsave(&phba->hbalock, iflags);
/* Post any pending iocb to the SLI layer */
if (atomic_read(&phba->fabric_iocb_count) == 0) {
list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
list);
if (iocb)
/* Increment fabric iocb count to hold the position */
atomic_inc(&phba->fabric_iocb_count);
}
spin_unlock_irqrestore(&phba->hbalock, iflags);
if (iocb) {
iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
iocb->iocb_flag |= LPFC_IO_FABRIC;
lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
"Fabric sched1: ste:x%x",
iocb->vport->port_state, 0, 0);
ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
if (ret == IOCB_ERROR) {
iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
iocb->fabric_iocb_cmpl = NULL;
iocb->iocb_flag &= ~LPFC_IO_FABRIC;
cmd = &iocb->iocb;
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
iocb->iocb_cmpl(phba, iocb, iocb);
atomic_dec(&phba->fabric_iocb_count);
goto repeat;
}
}
return;
}
/**
* lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
* @phba: pointer to lpfc hba data structure.
*
* This routine unblocks the issuing fabric iocb command. The function
* will clear the fabric iocb block bit and then invoke the routine
* lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
* from the driver internal fabric iocb list.
**/
void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
lpfc_resume_fabric_iocbs(phba);
return;
}
/**
* lpfc_block_fabric_iocbs - Block issuing fabric iocb command
* @phba: pointer to lpfc hba data structure.
*
* This routine blocks the issuing fabric iocb for a specified amount of
* time (currently 100 ms). This is done by set the fabric iocb block bit
* and set up a timeout timer for 100ms. When the block bit is set, no more
* fabric iocb will be issued out of the HBA.
**/
static void
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{
int blocked;
blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
/* Start a timer to unblock fabric iocbs after 100ms */
if (!blocked)
mod_timer(&phba->fabric_block_timer,
jiffies + msecs_to_jiffies(100));
return;
}
/**
* lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @rspiocb: pointer to lpfc response iocb data structure.
*
* This routine is the callback function that is put to the fabric iocb's
* callback function pointer (iocb->iocb_cmpl). The original iocb's callback
* function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
* function first restores and invokes the original iocb's callback function
* and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
* fabric bound iocb from the driver internal fabric iocb list onto the wire.
**/
static void
lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct ls_rjt stat;
if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
BUG();
switch (rspiocb->iocb.ulpStatus) {
case IOSTAT_NPORT_RJT:
case IOSTAT_FABRIC_RJT:
if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
lpfc_block_fabric_iocbs(phba);
}
break;
case IOSTAT_NPORT_BSY:
case IOSTAT_FABRIC_BSY:
lpfc_block_fabric_iocbs(phba);
break;
case IOSTAT_LS_RJT:
stat.un.lsRjtError =
be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
(stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
lpfc_block_fabric_iocbs(phba);
break;
}
if (atomic_read(&phba->fabric_iocb_count) == 0)
BUG();
cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
cmdiocb->fabric_iocb_cmpl = NULL;
cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
atomic_dec(&phba->fabric_iocb_count);
if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
/* Post any pending iocbs to HBA */
lpfc_resume_fabric_iocbs(phba);
}
}
/**
* lpfc_issue_fabric_iocb - Issue a fabric iocb command
* @phba: pointer to lpfc hba data structure.
* @iocb: pointer to lpfc command iocb data structure.
*
* This routine is used as the top-level API for issuing a fabric iocb command
* such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
* function makes sure that only one fabric bound iocb will be outstanding at
* any given time. As such, this function will first check to see whether there
* is already an outstanding fabric iocb on the wire. If so, it will put the
* newly issued iocb onto the driver internal fabric iocb list, waiting to be
* issued later. Otherwise, it will issue the iocb on the wire and update the
* fabric iocb count it indicate that there is one fabric iocb on the wire.
*
* Note, this implementation has a potential sending out fabric IOCBs out of
* order. The problem is caused by the construction of the "ready" boolen does
* not include the condition that the internal fabric IOCB list is empty. As
* such, it is possible a fabric IOCB issued by this routine might be "jump"
* ahead of the fabric IOCBs in the internal list.
*
* Return code
* IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
* IOCB_ERROR - failed to issue fabric iocb
**/
static int
lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
{
unsigned long iflags;
int ready;
int ret;
if (atomic_read(&phba->fabric_iocb_count) > 1)
BUG();
spin_lock_irqsave(&phba->hbalock, iflags);
ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
if (ready)
/* Increment fabric iocb count to hold the position */
atomic_inc(&phba->fabric_iocb_count);
spin_unlock_irqrestore(&phba->hbalock, iflags);
if (ready) {
iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
iocb->iocb_flag |= LPFC_IO_FABRIC;
lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
"Fabric sched2: ste:x%x",
iocb->vport->port_state, 0, 0);
ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
if (ret == IOCB_ERROR) {
iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
iocb->fabric_iocb_cmpl = NULL;
iocb->iocb_flag &= ~LPFC_IO_FABRIC;
atomic_dec(&phba->fabric_iocb_count);
}
} else {
spin_lock_irqsave(&phba->hbalock, iflags);
list_add_tail(&iocb->list, &phba->fabric_iocb_list);
spin_unlock_irqrestore(&phba->hbalock, iflags);
ret = IOCB_SUCCESS;
}
return ret;
}
/**
* lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
* @vport: pointer to a virtual N_Port data structure.
*
* This routine aborts all the IOCBs associated with a @vport from the
* driver internal fabric IOCB list. The list contains fabric IOCBs to be
* issued to the ELS IOCB ring. This abort function walks the fabric IOCB
* list, removes each IOCB associated with the @vport off the list, set the
* status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
* associated with the IOCB.
**/
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
{
LIST_HEAD(completions);
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *tmp_iocb, *piocb;
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
list) {
if (piocb->vport != vport)
continue;
list_move_tail(&piocb->list, &completions);
}
spin_unlock_irq(&phba->hbalock);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/**
* lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
* @ndlp: pointer to a node-list data structure.
*
* This routine aborts all the IOCBs associated with an @ndlp from the
* driver internal fabric IOCB list. The list contains fabric IOCBs to be
* issued to the ELS IOCB ring. This abort function walks the fabric IOCB
* list, removes each IOCB associated with the @ndlp off the list, set the
* status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
* associated with the IOCB.
**/
void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
LIST_HEAD(completions);
struct lpfc_hba *phba = ndlp->phba;
struct lpfc_iocbq *tmp_iocb, *piocb;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
list) {
if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
list_move_tail(&piocb->list, &completions);
}
}
spin_unlock_irq(&phba->hbalock);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/**
* lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
* @phba: pointer to lpfc hba data structure.
*
* This routine aborts all the IOCBs currently on the driver internal
* fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
* IOCB ring. This function takes the entire IOCB list off the fabric IOCB
* list, removes IOCBs off the list, set the status feild to
* IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
* the IOCB.
**/
void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
{
LIST_HEAD(completions);
spin_lock_irq(&phba->hbalock);
list_splice_init(&phba->fabric_iocb_list, &completions);
spin_unlock_irq(&phba->hbalock);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/**
* lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
* @vport: pointer to lpfc vport data structure.
*
* This routine is invoked by the vport cleanup for deletions and the cleanup
* for an ndlp on removal.
**/
void
lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
unsigned long iflag = 0;
spin_lock_irqsave(&phba->hbalock, iflag);
spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
list_for_each_entry_safe(sglq_entry, sglq_next,
&phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport)
sglq_entry->ndlp = NULL;
}
spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
return;
}
/**
* lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
* @phba: pointer to lpfc hba data structure.
* @axri: pointer to the els xri abort wcqe structure.
*
* This routine is invoked by the worker thread to process a SLI4 slow-path
* ELS aborted xri.
**/
void
lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
uint16_t lxri = 0;
struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
unsigned long iflag = 0;
struct lpfc_nodelist *ndlp;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
spin_lock_irqsave(&phba->hbalock, iflag);
spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
list_for_each_entry_safe(sglq_entry, sglq_next,
&phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
if (sglq_entry->sli4_xritag == xri) {
list_del(&sglq_entry->list);
ndlp = sglq_entry->ndlp;
sglq_entry->ndlp = NULL;
spin_lock(&pring->ring_lock);
list_add_tail(&sglq_entry->list,
&phba->sli4_hba.lpfc_sgl_list);
sglq_entry->state = SGL_FREED;
spin_unlock(&pring->ring_lock);
spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
lpfc_set_rrq_active(phba, ndlp,
sglq_entry->sli4_lxritag,
rxid, 1);
/* Check if TXQ queue needs to be serviced */
if (!(list_empty(&pring->txq)))
lpfc_worker_wake_up(phba);
return;
}
}
spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
lxri = lpfc_sli4_xri_inrange(phba, xri);
if (lxri == NO_XRI) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
return;
}
spin_lock(&pring->ring_lock);
sglq_entry = __lpfc_get_active_sglq(phba, lxri);
if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
spin_unlock(&pring->ring_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
return;
}
sglq_entry->state = SGL_XRI_ABORTED;
spin_unlock(&pring->ring_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
return;
}
/* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
* @vport: pointer to virtual port object.
* @ndlp: nodelist pointer for the impacted node.
*
* The driver calls this routine in response to an SLI4 XRI ABORT CQE
* or an SLI3 ASYNC_STATUS_CN event from the port. For either event,
* the driver is required to send a LOGO to the remote node before it
* attempts to recover its login to the remote node.
*/
void
lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost;
struct lpfc_hba *phba;
unsigned long flags = 0;
shost = lpfc_shost_from_vport(vport);
phba = vport->phba;
if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
lpfc_printf_log(phba, KERN_INFO,
LOG_SLI, "3093 No rport recovery needed. "
"rport in state 0x%x\n", ndlp->nlp_state);
return;
}
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"3094 Start rport recovery on shost id 0x%x "
"fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
"flags 0x%x\n",
shost->host_no, ndlp->nlp_DID,
vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
ndlp->nlp_flag);
/*
* The rport is not responding. Remove the FCP-2 flag to prevent
* an ADISC in the follow-up recovery code.
*/
spin_lock_irqsave(shost->host_lock, flags);
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
spin_unlock_irqrestore(shost->host_lock, flags);
lpfc_issue_els_logo(vport, ndlp, 0);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
}
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