scsi: qla2xxx: Accelerate SCSI BUSY status generation in target mode
Accelerate generation of SCSI busy to let initiators slow down when
target is running low in resources.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 08000ae..436968a 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -7374,10 +7374,19 @@ qla81xx_update_fw_options(scsi_qla_host_t *vha)
}
if (qla_tgt_mode_enabled(vha) ||
- qla_dual_mode_enabled(vha))
+ qla_dual_mode_enabled(vha)) {
+ /* FW auto send SCSI status during */
+ ha->fw_options[1] |= BIT_8;
+ ha->fw_options[10] |= (u16)SAM_STAT_BUSY << 8;
+
+ /* FW perform Exchange validation */
ha->fw_options[2] |= BIT_4;
- else
+ } else {
+ ha->fw_options[1] &= ~BIT_8;
+ ha->fw_options[10] &= 0x00ff;
+
ha->fw_options[2] &= ~BIT_4;
+ }
if (ql2xetsenable) {
/* Enable ETS Burst. */