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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>
This commit is contained in:
Quinn Tran 2019-07-26 09:07:34 -07:00 committed by Martin K. Petersen
parent 3a4b6cc733
commit f0cecc1eec
1 changed files with 22 additions and 6 deletions
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28
drivers/scsi/qla2xxx/qla_gs.c
View File

@ -4053,9 +4053,6 @@ static int qla24xx_async_gnnft(scsi_qla_host_t *vha, struct srb *sp,
rval = qla2x00_start_sp(sp);
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;
}
@ -4079,6 +4076,17 @@ done_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;
} /* 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);
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;
}
@ -4234,6 +4239,17 @@ done_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;
}