diff mbox series

[04/14] qla2xxx: Optimize NPIV tear down process

Message ID 20190912151949.2348-5-hmadhani@marvell.com (mailing list archive)
State Superseded
Headers show
Series qla2xxx: Bug fixes for the driver. | expand

Commit Message

Himanshu Madhani Sept. 12, 2019, 3:19 p.m. UTC
From: Quinn Tran <qutran@marvell.com>

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.

Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
---
 drivers/scsi/qla2xxx/qla_attr.c   |  2 ++
 drivers/scsi/qla2xxx/qla_def.h    |  1 +
 drivers/scsi/qla2xxx/qla_gs.c     |  3 ++-
 drivers/scsi/qla2xxx/qla_mid.c    | 32 ++++++++++++++++++++++----------
 drivers/scsi/qla2xxx/qla_os.c     |  7 ++++++-
 drivers/scsi/qla2xxx/qla_target.c |  1 +
 6 files changed, 34 insertions(+), 12 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 2b92d4659934..6b5379c08f28 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -2918,6 +2918,8 @@  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);
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index b91ef7b75e8d..c15a37d15561 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -4338,6 +4338,7 @@  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 */
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 98cad862fe94..b197245fe929 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -3127,7 +3127,8 @@  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);
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index b2977e49356b..de331f6651ce 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -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);
 }
 
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 5124e2265cac..5aeb027c1dbd 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1150,9 +1150,14 @@  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);
 }
 
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index ba63ea67f843..637f24622733 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1116,6 +1116,7 @@  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: