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linux-zen-server/drivers/scsi/lpfc/lpfc_vport.c

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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
* Copyright (C) 2004-2016 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.broadcom.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. *
*******************************************************************/
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/sched/signal.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_version.h"
#include "lpfc_vport.h"
inline void lpfc_vport_set_state(struct lpfc_vport *vport,
enum fc_vport_state new_state)
{
struct fc_vport *fc_vport = vport->fc_vport;
if (fc_vport) {
/*
* When the transport defines fc_vport_set state we will replace
* this code with the following line
*/
/* fc_vport_set_state(fc_vport, new_state); */
if (new_state != FC_VPORT_INITIALIZING)
fc_vport->vport_last_state = fc_vport->vport_state;
fc_vport->vport_state = new_state;
}
/* for all the error states we will set the invternal state to FAILED */
switch (new_state) {
case FC_VPORT_NO_FABRIC_SUPP:
case FC_VPORT_NO_FABRIC_RSCS:
case FC_VPORT_FABRIC_LOGOUT:
case FC_VPORT_FABRIC_REJ_WWN:
case FC_VPORT_FAILED:
vport->port_state = LPFC_VPORT_FAILED;
break;
case FC_VPORT_LINKDOWN:
vport->port_state = LPFC_VPORT_UNKNOWN;
break;
default:
/* do nothing */
break;
}
}
int
lpfc_alloc_vpi(struct lpfc_hba *phba)
{
unsigned long vpi;
spin_lock_irq(&phba->hbalock);
/* Start at bit 1 because vpi zero is reserved for the physical port */
vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
if (vpi > phba->max_vpi)
vpi = 0;
else
set_bit(vpi, phba->vpi_bmask);
if (phba->sli_rev == LPFC_SLI_REV4)
phba->sli4_hba.max_cfg_param.vpi_used++;
spin_unlock_irq(&phba->hbalock);
return vpi;
}
static void
lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
{
if (vpi == 0)
return;
spin_lock_irq(&phba->hbalock);
clear_bit(vpi, phba->vpi_bmask);
if (phba->sli_rev == LPFC_SLI_REV4)
phba->sli4_hba.max_cfg_param.vpi_used--;
spin_unlock_irq(&phba->hbalock);
}
static int
lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
int rc;
pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb) {
return -ENOMEM;
}
mb = &pmb->u.mb;
rc = lpfc_read_sparam(phba, pmb, vport->vpi);
if (rc) {
mempool_free(pmb, phba->mbox_mem_pool);
return -ENOMEM;
}
/*
* Wait for the read_sparams mailbox to complete. Driver needs
* this per vport to start the FDISC. If the mailbox fails,
* just cleanup and return an error unless the failure is a
* mailbox timeout. For MBX_TIMEOUT, allow the default
* mbox completion handler to take care of the cleanup. This
* is safe as the mailbox command isn't one that triggers
* another mailbox.
*/
pmb->vport = vport;
rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
if (rc != MBX_SUCCESS) {
if (signal_pending(current)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1830 Signal aborted mbxCmd x%x\n",
mb->mbxCommand);
if (rc != MBX_TIMEOUT)
lpfc_mbox_rsrc_cleanup(phba, pmb,
MBOX_THD_UNLOCKED);
return -EINTR;
} else {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1818 VPort failed init, mbxCmd x%x "
"READ_SPARM mbxStatus x%x, rc = x%x\n",
mb->mbxCommand, mb->mbxStatus, rc);
if (rc != MBX_TIMEOUT)
lpfc_mbox_rsrc_cleanup(phba, pmb,
MBOX_THD_UNLOCKED);
return -EIO;
}
}
mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
sizeof (struct lpfc_name));
memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
sizeof (struct lpfc_name));
lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
return 0;
}
static int
lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
const char *name_type)
{
/* ensure that IEEE format 1 addresses
* contain zeros in bits 59-48
*/
if (!((wwn->u.wwn[0] >> 4) == 1 &&
((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
return 1;
lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
"1822 Invalid %s: %02x:%02x:%02x:%02x:"
"%02x:%02x:%02x:%02x\n",
name_type,
wwn->u.wwn[0], wwn->u.wwn[1],
wwn->u.wwn[2], wwn->u.wwn[3],
wwn->u.wwn[4], wwn->u.wwn[5],
wwn->u.wwn[6], wwn->u.wwn[7]);
return 0;
}
static int
lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
{
struct lpfc_vport *vport;
unsigned long flags;
spin_lock_irqsave(&phba->port_list_lock, flags);
list_for_each_entry(vport, &phba->port_list, listentry) {
if (vport == new_vport)
continue;
/* If they match, return not unique */
if (memcmp(&vport->fc_sparam.portName,
&new_vport->fc_sparam.portName,
sizeof(struct lpfc_name)) == 0) {
spin_unlock_irqrestore(&phba->port_list_lock, flags);
return 0;
}
}
spin_unlock_irqrestore(&phba->port_list_lock, flags);
return 1;
}
/**
* lpfc_discovery_wait - Wait for driver discovery to quiesce
* @vport: The virtual port for which this call is being executed.
*
* This driver calls this routine specifically from lpfc_vport_delete
* to enforce a synchronous execution of vport
* delete relative to discovery activities. The
* lpfc_vport_delete routine should not return until it
* can reasonably guarantee that discovery has quiesced.
* Post FDISC LOGO, the driver must wait until its SAN teardown is
* complete and all resources recovered before allowing
* cleanup.
*
* This routine does not require any locks held.
**/
static void lpfc_discovery_wait(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
uint32_t wait_flags = 0;
unsigned long wait_time_max;
unsigned long start_time;
wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
/*
* The time constraint on this loop is a balance between the
* fabric RA_TOV value and dev_loss tmo. The driver's
* devloss_tmo is 10 giving this loop a 3x multiplier minimally.
*/
wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
wait_time_max += jiffies;
start_time = jiffies;
while (time_before(jiffies, wait_time_max)) {
if ((vport->num_disc_nodes > 0) ||
(vport->fc_flag & wait_flags) ||
((vport->port_state > LPFC_VPORT_FAILED) &&
(vport->port_state < LPFC_VPORT_READY))) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
"1833 Vport discovery quiesce Wait:"
" state x%x fc_flags x%x"
" num_nodes x%x, waiting 1000 msecs"
" total wait msecs x%x\n",
vport->port_state, vport->fc_flag,
vport->num_disc_nodes,
jiffies_to_msecs(jiffies - start_time));
msleep(1000);
} else {
/* Base case. Wait variants satisfied. Break out */
lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
"1834 Vport discovery quiesced:"
" state x%x fc_flags x%x"
" wait msecs x%x\n",
vport->port_state, vport->fc_flag,
jiffies_to_msecs(jiffies
- start_time));
break;
}
}
if (time_after(jiffies, wait_time_max))
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1835 Vport discovery quiesce failed:"
" state x%x fc_flags x%x wait msecs x%x\n",
vport->port_state, vport->fc_flag,
jiffies_to_msecs(jiffies - start_time));
}
int
lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
{
struct lpfc_nodelist *ndlp;
struct Scsi_Host *shost = fc_vport->shost;
struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = pport->phba;
struct lpfc_vport *vport = NULL;
int instance;
int vpi;
int rc = VPORT_ERROR;
int status;
if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"1808 Create VPORT failed: "
"NPIV is not enabled: SLImode:%d\n",
phba->sli_rev);
rc = VPORT_INVAL;
goto error_out;
}
/* NPIV is not supported if HBA has NVME Target enabled */
if (phba->nvmet_support) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"3189 Create VPORT failed: "
"NPIV is not supported on NVME Target\n");
rc = VPORT_INVAL;
goto error_out;
}
vpi = lpfc_alloc_vpi(phba);
if (vpi == 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"1809 Create VPORT failed: "
"Max VPORTs (%d) exceeded\n",
phba->max_vpi);
rc = VPORT_NORESOURCES;
goto error_out;
}
/* Assign an unused board number */
if ((instance = lpfc_get_instance()) < 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"1810 Create VPORT failed: Cannot get "
"instance number\n");
lpfc_free_vpi(phba, vpi);
rc = VPORT_NORESOURCES;
goto error_out;
}
vport = lpfc_create_port(phba, instance, &fc_vport->dev);
if (!vport) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"1811 Create VPORT failed: vpi x%x\n", vpi);
lpfc_free_vpi(phba, vpi);
rc = VPORT_NORESOURCES;
goto error_out;
}
vport->vpi = vpi;
lpfc_debugfs_initialize(vport);
if ((status = lpfc_vport_sparm(phba, vport))) {
if (status == -EINTR) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1831 Create VPORT Interrupted.\n");
rc = VPORT_ERROR;
} else {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1813 Create VPORT failed. "
"Cannot get sparam\n");
rc = VPORT_NORESOURCES;
}
lpfc_free_vpi(phba, vpi);
destroy_port(vport);
goto error_out;
}
u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
!lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1821 Create VPORT failed. "
"Invalid WWN format\n");
lpfc_free_vpi(phba, vpi);
destroy_port(vport);
rc = VPORT_INVAL;
goto error_out;
}
if (!lpfc_unique_wwpn(phba, vport)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1823 Create VPORT failed. "
"Duplicate WWN on HBA\n");
lpfc_free_vpi(phba, vpi);
destroy_port(vport);
rc = VPORT_INVAL;
goto error_out;
}
/* Create binary sysfs attribute for vport */
lpfc_alloc_sysfs_attr(vport);
/* Set the DFT_LUN_Q_DEPTH accordingly */
vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth;
/* Only the physical port can support NVME for now */
vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
*(struct lpfc_vport **)fc_vport->dd_data = vport;
vport->fc_vport = fc_vport;
/* At this point we are fully registered with SCSI Layer. */
vport->load_flag |= FC_ALLOW_FDMI;
if (phba->cfg_enable_SmartSAN ||
(phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
/* Setup appropriate attribute masks */
vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask;
vport->fdmi_port_mask = phba->pport->fdmi_port_mask;
}
/*
* In SLI4, the vpi must be activated before it can be used
* by the port.
*/
if ((phba->sli_rev == LPFC_SLI_REV4) &&
(pport->fc_flag & FC_VFI_REGISTERED)) {
rc = lpfc_sli4_init_vpi(vport);
if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"1838 Failed to INIT_VPI on vpi %d "
"status %d\n", vpi, rc);
rc = VPORT_NORESOURCES;
lpfc_free_vpi(phba, vpi);
goto error_out;
}
} else if (phba->sli_rev == LPFC_SLI_REV4) {
/*
* Driver cannot INIT_VPI now. Set the flags to
* init_vpi when reg_vfi complete.
*/
vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
rc = VPORT_OK;
goto out;
}
if ((phba->link_state < LPFC_LINK_UP) ||
(pport->port_state < LPFC_FABRIC_CFG_LINK) ||
(phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
rc = VPORT_OK;
goto out;
}
if (disable) {
lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
rc = VPORT_OK;
goto out;
}
/* Use the Physical nodes Fabric NDLP to determine if the link is
* up and ready to FDISC.
*/
ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
if (ndlp &&
ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
lpfc_set_disctmo(vport);
lpfc_initial_fdisc(vport);
} else {
lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"0262 No NPIV Fabric support\n");
}
} else {
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
}
rc = VPORT_OK;
out:
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
"1825 Vport Created.\n");
lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
error_out:
return rc;
}
static int
lpfc_send_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
int rc;
struct lpfc_hba *phba = vport->phba;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
spin_lock_irq(&ndlp->lock);
if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO) &&
!ndlp->logo_waitq) {
ndlp->logo_waitq = &waitq;
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
ndlp->nlp_flag |= NLP_ISSUE_LOGO;
ndlp->save_flags |= NLP_WAIT_FOR_LOGO;
}
spin_unlock_irq(&ndlp->lock);
rc = lpfc_issue_els_npiv_logo(vport, ndlp);
if (!rc) {
wait_event_timeout(waitq,
(!(ndlp->save_flags & NLP_WAIT_FOR_LOGO)),
msecs_to_jiffies(phba->fc_ratov * 2000));
if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO))
goto logo_cmpl;
/* LOGO wait failed. Correct status. */
rc = -EINTR;
} else {
rc = -EIO;
}
/* Error - clean up node flags. */
spin_lock_irq(&ndlp->lock);
ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
spin_unlock_irq(&ndlp->lock);
logo_cmpl:
lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
"1824 Issue LOGO completes with status %d\n",
rc);
spin_lock_irq(&ndlp->lock);
ndlp->logo_waitq = NULL;
spin_unlock_irq(&ndlp->lock);
return rc;
}
static int
disable_vport(struct fc_vport *fc_vport)
{
struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp = NULL;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
/* Can't disable during an outstanding delete. */
if (vport->load_flag & FC_UNLOADING)
return 0;
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (ndlp && phba->link_state >= LPFC_LINK_UP)
(void)lpfc_send_npiv_logo(vport, ndlp);
lpfc_sli_host_down(vport);
lpfc_cleanup_rpis(vport, 0);
lpfc_stop_vport_timers(vport);
lpfc_unreg_all_rpis(vport);
lpfc_unreg_default_rpis(vport);
/*
* Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
* scsi_host_put() to release the vport.
*/
lpfc_mbx_unreg_vpi(vport);
if (phba->sli_rev == LPFC_SLI_REV4) {
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
spin_unlock_irq(shost->host_lock);
}
lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
"1826 Vport Disabled.\n");
return VPORT_OK;
}
static int
enable_vport(struct fc_vport *fc_vport)
{
struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp = NULL;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if ((phba->link_state < LPFC_LINK_UP) ||
(phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
return VPORT_OK;
}
spin_lock_irq(shost->host_lock);
vport->load_flag |= FC_LOADING;
if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
spin_unlock_irq(shost->host_lock);
lpfc_issue_init_vpi(vport);
goto out;
}
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
/* Use the Physical nodes Fabric NDLP to determine if the link is
* up and ready to FDISC.
*/
ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
lpfc_set_disctmo(vport);
lpfc_initial_fdisc(vport);
} else {
lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"0264 No NPIV Fabric support\n");
}
} else {
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
}
out:
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
"1827 Vport Enabled.\n");
return VPORT_OK;
}
int
lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
{
if (disable)
return disable_vport(fc_vport);
else
return enable_vport(fc_vport);
}
int
lpfc_vport_delete(struct fc_vport *fc_vport)
{
struct lpfc_nodelist *ndlp = NULL;
struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
int rc;
if (vport->port_type == LPFC_PHYSICAL_PORT) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1812 vport_delete failed: Cannot delete "
"physical host\n");
return VPORT_ERROR;
}
/* If the vport is a static vport fail the deletion. */
if ((vport->vport_flag & STATIC_VPORT) &&
!(phba->pport->load_flag & FC_UNLOADING)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"1837 vport_delete failed: Cannot delete "
"static vport.\n");
return VPORT_ERROR;
}
spin_lock_irq(&phba->hbalock);
vport->load_flag |= FC_UNLOADING;
spin_unlock_irq(&phba->hbalock);
/*
* If we are not unloading the driver then prevent the vport_delete
* from happening until after this vport's discovery is finished.
*/
if (!(phba->pport->load_flag & FC_UNLOADING)) {
int check_count = 0;
while (check_count < ((phba->fc_ratov * 3) + 3) &&
vport->port_state > LPFC_VPORT_FAILED &&
vport->port_state < LPFC_VPORT_READY) {
check_count++;
msleep(1000);
}
if (vport->port_state > LPFC_VPORT_FAILED &&
vport->port_state < LPFC_VPORT_READY)
return -EAGAIN;
}
/*
* Take early refcount for outstanding I/O requests we schedule during
* delete processing for unreg_vpi. Always keep this before
* scsi_remove_host() as we can no longer obtain a reference through
* scsi_host_get() after scsi_host_remove as shost is set to SHOST_DEL.
*/
if (!scsi_host_get(shost))
return VPORT_INVAL;
lpfc_free_sysfs_attr(vport);
lpfc_debugfs_terminate(vport);
/* Remove FC host to break driver binding. */
fc_remove_host(shost);
scsi_remove_host(shost);
/* Send the DA_ID and Fabric LOGO to cleanup Nameserver entries. */
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp)
goto skip_logo;
if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
phba->link_state >= LPFC_LINK_UP &&
phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
if (vport->cfg_enable_da_id) {
/* Send DA_ID and wait for a completion. */
rc = lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0);
if (rc) {
lpfc_printf_log(vport->phba, KERN_WARNING,
LOG_VPORT,
"1829 CT command failed to "
"delete objects on fabric, "
"rc %d\n", rc);
}
}
/*
* If the vpi is not registered, then a valid FDISC doesn't
* exist and there is no need for a ELS LOGO. Just cleanup
* the ndlp.
*/
if (!(vport->vpi_state & LPFC_VPI_REGISTERED))
goto skip_logo;
/* Issue a Fabric LOGO to cleanup fabric resources. */
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp)
goto skip_logo;
rc = lpfc_send_npiv_logo(vport, ndlp);
if (rc)
goto skip_logo;
}
if (!(phba->pport->load_flag & FC_UNLOADING))
lpfc_discovery_wait(vport);
skip_logo:
lpfc_cleanup(vport);
/* Remove scsi host now. The nodes are cleaned up. */
lpfc_sli_host_down(vport);
lpfc_stop_vport_timers(vport);
if (!(phba->pport->load_flag & FC_UNLOADING)) {
lpfc_unreg_all_rpis(vport);
lpfc_unreg_default_rpis(vport);
/*
* Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
* does the scsi_host_put() to release the vport.
*/
if (!(vport->vpi_state & LPFC_VPI_REGISTERED) ||
lpfc_mbx_unreg_vpi(vport))
scsi_host_put(shost);
} else {
scsi_host_put(shost);
}
lpfc_free_vpi(phba, vport->vpi);
vport->work_port_events = 0;
spin_lock_irq(&phba->port_list_lock);
list_del_init(&vport->listentry);
spin_unlock_irq(&phba->port_list_lock);
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
"1828 Vport Deleted.\n");
scsi_host_put(shost);
return VPORT_OK;
}
struct lpfc_vport **
lpfc_create_vport_work_array(struct lpfc_hba *phba)
{
struct lpfc_vport *port_iterator;
struct lpfc_vport **vports;
int index = 0;
vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *),
GFP_KERNEL);
if (vports == NULL)
return NULL;
spin_lock_irq(&phba->port_list_lock);
list_for_each_entry(port_iterator, &phba->port_list, listentry) {
if (port_iterator->load_flag & FC_UNLOADING)
continue;
if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
lpfc_printf_vlog(port_iterator, KERN_ERR,
LOG_TRACE_EVENT,
"1801 Create vport work array FAILED: "
"cannot do scsi_host_get\n");
continue;
}
vports[index++] = port_iterator;
}
spin_unlock_irq(&phba->port_list_lock);
return vports;
}
void
lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
{
int i;
if (vports == NULL)
return;
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
scsi_host_put(lpfc_shost_from_vport(vports[i]));
kfree(vports);
}
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