[SCSI] qla2xxx: Set host can_queue value based on available resources.
Tell the mid-layer that number of commands we can queue is the available
resources we have minus a small amount for internal commands.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index c698e10..925d45c 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2561,10 +2561,6 @@
host = base_vha->host;
base_vha->req = req;
- if (IS_QLAFX00(ha))
- host->can_queue = QLAFX00_MAX_CANQUEUE;
- else
- host->can_queue = req->length + 128;
if (IS_QLA2XXX_MIDTYPE(ha))
base_vha->mgmt_svr_loop_id = 10 + base_vha->vp_idx;
else
@@ -2587,11 +2583,6 @@
if (!IS_QLA82XX(ha))
host->sg_tablesize = QLA_SG_ALL;
}
- ql_dbg(ql_dbg_init, base_vha, 0x0032,
- "can_queue=%d, req=%p, "
- "mgmt_svr_loop_id=%d, sg_tablesize=%d.\n",
- host->can_queue, base_vha->req,
- base_vha->mgmt_svr_loop_id, host->sg_tablesize);
host->max_id = ha->max_fibre_devices;
host->cmd_per_lun = 3;
host->unique_id = host->host_no;
@@ -2707,6 +2698,16 @@
goto probe_failed;
}
+ if (IS_QLAFX00(ha))
+ host->can_queue = QLAFX00_MAX_CANQUEUE;
+ else
+ host->can_queue = req->num_outstanding_cmds - 10;
+
+ ql_dbg(ql_dbg_init, base_vha, 0x0032,
+ "can_queue=%d, req=%p, mgmt_svr_loop_id=%d, sg_tablesize=%d.\n",
+ host->can_queue, base_vha->req,
+ base_vha->mgmt_svr_loop_id, host->sg_tablesize);
+
if (ha->mqenable) {
if (qla25xx_setup_mode(base_vha)) {
ql_log(ql_log_warn, base_vha, 0x00ec,
