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scsi: qla2xxx: Optimize NPIV tear down process

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In the case of NPIV port is being torn down, this patch will set a flag to
indicate VPORT_DELETE. This would prevent relogin to be triggered.

Link: https://lore.kernel.org/r/20190912180918.6436-5-hmadhani@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2019-09-12 11:09:08 -07:00 committed by Martin K. Petersen
parent fd5564ba54
commit f5187b7d1a
6 changed files with 34 additions and 12 deletions
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2
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -2920,6 +2920,8 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
struct qla_hw_data *ha = vha->hw;
uint16_t id = vha->vp_idx;
set_bit(VPORT_DELETE, &vha->dpc_flags);
while (test_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags) ||
test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags))
msleep(1000);

1
drivers/scsi/qla2xxx/qla_def.h
View File

@ -4394,6 +4394,7 @@ typedef struct scsi_qla_host {
#define IOCB_WORK_ACTIVE 31
#define SET_ZIO_THRESHOLD_NEEDED 32
#define ISP_ABORT_TO_ROM 33
#define VPORT_DELETE 34
unsigned long pci_flags;
#define PFLG_DISCONNECTED 0 /* PCI device removed */

3
drivers/scsi/qla2xxx/qla_gs.c
View File

@ -3102,7 +3102,8 @@ int qla24xx_post_gpnid_work(struct scsi_qla_host *vha, port_id_t *id)
{
struct qla_work_evt *e;
if (test_bit(UNLOADING, &vha->dpc_flags))
if (test_bit(UNLOADING, &vha->dpc_flags) ||
(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)))
return 0;
e = qla2x00_alloc_work(vha, QLA_EVT_GPNID);

32
drivers/scsi/qla2xxx/qla_mid.c
View File

@ -66,6 +66,7 @@ qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
uint16_t vp_id;
struct qla_hw_data *ha = vha->hw;
unsigned long flags = 0;
u8 i;
mutex_lock(&ha->vport_lock);
/*
@ -75,8 +76,9 @@ qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
* ensures no active vp_list traversal while the vport is removed
* from the queue)
*/
wait_event_timeout(vha->vref_waitq, !atomic_read(&vha->vref_count),
10*HZ);
for (i = 0; i < 10 && atomic_read(&vha->vref_count); i++)
wait_event_timeout(vha->vref_waitq,
atomic_read(&vha->vref_count), HZ);
spin_lock_irqsave(&ha->vport_slock, flags);
if (atomic_read(&vha->vref_count)) {
@ -262,6 +264,9 @@ qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
spin_lock_irqsave(&ha->vport_slock, flags);
list_for_each_entry(vha, &ha->vp_list, list) {
if (vha->vp_idx) {
if (test_bit(VPORT_DELETE, &vha->dpc_flags))
continue;
atomic_inc(&vha->vref_count);
spin_unlock_irqrestore(&ha->vport_slock, flags);
@ -300,6 +305,20 @@ qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
int
qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
{
fc_port_t *fcport;
/*
* To exclusively reset vport, we need to log it out first.
* Note: This control_vp can fail if ISP reset is already
* issued, this is expected, as the vp would be already
* logged out due to ISP reset.
*/
if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
list_for_each_entry(fcport, &vha->vp_fcports, list)
fcport->logout_on_delete = 0;
}
/*
* Physical port will do most of the abort and recovery work. We can
* just treat it as a loop down
@ -312,16 +331,9 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
}
/*
* To exclusively reset vport, we need to log it out first. Note: this
* control_vp can fail if ISP reset is already issued, this is
* expected, as the vp would be already logged out due to ISP reset.
*/
if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
ql_dbg(ql_dbg_taskm, vha, 0x801d,
"Scheduling enable of Vport %d.\n", vha->vp_idx);
return qla24xx_enable_vp(vha);
}

7
drivers/scsi/qla2xxx/qla_os.c
View File

@ -1115,9 +1115,14 @@ static inline int test_fcport_count(scsi_qla_host_t *vha)
void
qla2x00_wait_for_sess_deletion(scsi_qla_host_t *vha)
{
u8 i;
qla2x00_mark_all_devices_lost(vha, 0);
wait_event_timeout(vha->fcport_waitQ, test_fcport_count(vha), 10*HZ);
for (i = 0; i < 10; i++)
wait_event_timeout(vha->fcport_waitQ, test_fcport_count(vha),
HZ);
flush_workqueue(vha->hw->wq);
}

1
drivers/scsi/qla2xxx/qla_target.c
View File

@ -1115,6 +1115,7 @@ void qlt_free_session_done(struct work_struct *work)
wake_up_all(&tgt->waitQ);
if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) &&
!(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) &&
(!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
switch (vha->host->active_mode) {
case MODE_INITIATOR: