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Commit f0cecc1e authored Jul 26, 2019 by Quinn Tran Committed by Martin K. Petersen Aug 07, 2019

scsi: qla2xxx: Retry fabric Scan on IOCB queue full



when fabric scan thread encounters IOCB Q Full, schedule a delayed work to
retry fabric scan.

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>

parent 3a4b6cc7

drivers/scsi/qla2xxx/qla_gs.c

+22 −6

Original line number	Original line	Diff line number	Diff line
	@@ -4053,9 +4053,6 @@ static int qla24xx_async_gnnft(scsi_qla_host_t vha, struct srb sp,

	rval = qla2x00_start_sp(sp);		rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {		if (rval != QLA_SUCCESS) {
	spin_lock_irqsave(&vha->work_lock, flags);
	vha->scan.scan_flags &= ~SF_SCANNING;
	spin_unlock_irqrestore(&vha->work_lock, flags);
	goto done_free_sp;		goto done_free_sp;
	}		}

	@@ -4079,6 +4076,17 @@ static int qla24xx_async_gnnft(scsi_qla_host_t vha, struct srb sp,

	sp->free(sp);		sp->free(sp);

			spin_lock_irqsave(&vha->work_lock, flags);
			vha->scan.scan_flags &= ~SF_SCANNING;
			if (vha->scan.scan_flags == 0) {
			ql_dbg(ql_dbg_disc, vha, 0xffff,
			"%s: schedule\n", __func__);
			vha->scan.scan_flags \|= SF_QUEUED;
			schedule_delayed_work(&vha->scan.scan_work, 5);
			}
			spin_unlock_irqrestore(&vha->work_lock, flags);


	return rval;		return rval;
	} /* GNNFT */		} /* GNNFT */

	@@ -4208,9 +4216,6 @@ int qla24xx_async_gpnft(scsi_qla_host_t vha, u8 fc4_type, srb_t sp)

	rval = qla2x00_start_sp(sp);		rval = qla2x00_start_sp(sp);
	if (rval != QLA_SUCCESS) {		if (rval != QLA_SUCCESS) {
	spin_lock_irqsave(&vha->work_lock, flags);
	vha->scan.scan_flags &= ~SF_SCANNING;
	spin_unlock_irqrestore(&vha->work_lock, flags);
	goto done_free_sp;		goto done_free_sp;
	}		}

	@@ -4234,6 +4239,17 @@ int qla24xx_async_gpnft(scsi_qla_host_t vha, u8 fc4_type, srb_t sp)

	sp->free(sp);		sp->free(sp);

			spin_lock_irqsave(&vha->work_lock, flags);
			vha->scan.scan_flags &= ~SF_SCANNING;
			if (vha->scan.scan_flags == 0) {
			ql_dbg(ql_dbg_disc, vha, 0xffff,
			"%s: schedule\n", __func__);
			vha->scan.scan_flags \|= SF_QUEUED;
			schedule_delayed_work(&vha->scan.scan_work, 5);
			}
			spin_unlock_irqrestore(&vha->work_lock, flags);


	return rval;		return rval;
	}		}