Fixed max value of lpfc_lun_queue_depth
Signed-off-by: James Smart <james.sm...@emulex.com>
---
lpfc_attr.c | 9 ++++++---
lpfc_init.c | 34 ++++++++++++++++++++++++----------
lpfc_sli.c | 11 +++++++++++
lpfc_vport.c | 3 +++
4 files changed, 44 insertions(+), 13 deletions(-)
diff -upNr a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
--- a/drivers/scsi/lpfc/lpfc_attr.c 2013-07-15 06:56:23.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_attr.c 2013-07-15 07:15:17.540055827 -0400
@@ -2591,9 +2591,12 @@ LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
/*
# lun_queue_depth: This parameter is used to limit the number of outstanding
-# commands per FCP LUN. Value range is [1,128]. Default value is 30.
+# commands per FCP LUN. Value range is [1,512]. Default value is 30.
+# If this parameter value is greater than 1/8th the maximum number of exchanges
+# supported by the HBA port, then the lun queue depth will be reduced to
+# 1/8th the maximum number of exchanges.
*/
-LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 128,
+LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
"Max number of FCP commands we can queue to a specific LUN");
/*
@@ -2601,7 +2604,7 @@ LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1
# commands per target port. Value range is [10,65535]. Default value is 65535.
*/
LPFC_VPORT_ATTR_R(tgt_queue_depth, 65535, 10, 65535,
- "Max number of FCP commands we can queue to a specific target port");
+ "Max number of FCP commands we can queue to a specific target
port");
/*
# hba_queue_depth: This parameter is used to limit the number of outstanding
diff -upNr a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
--- a/drivers/scsi/lpfc/lpfc_init.c 2013-07-15 06:56:23.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_init.c 2013-07-15 07:15:17.580055828 -0400
@@ -472,10 +472,22 @@ lpfc_config_port_post(struct lpfc_hba *p
lpfc_sli_read_link_ste(phba);
/* Reset the DFT_HBA_Q_DEPTH to the max xri */
- if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
- phba->cfg_hba_queue_depth =
- (mb->un.varRdConfig.max_xri + 1) -
- lpfc_sli4_get_els_iocb_cnt(phba);
+ i = (mb->un.varRdConfig.max_xri + 1);
+ if (phba->cfg_hba_queue_depth > i) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "3359 HBA queue depth changed from %d to %d\n",
+ phba->cfg_hba_queue_depth, i);
+ phba->cfg_hba_queue_depth = i;
+ }
+
+ /* Reset the DFT_LUN_Q_DEPTH to (max xri >> 3) */
+ i = (mb->un.varRdConfig.max_xri >> 3);
+ if (phba->pport->cfg_lun_queue_depth > i) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "3360 LUN queue depth changed from %d to %d\n",
+ phba->pport->cfg_lun_queue_depth, i);
+ phba->pport->cfg_lun_queue_depth = i;
+ }
phba->lmt = mb->un.varRdConfig.lmt;
@@ -6664,12 +6676,14 @@ lpfc_sli4_read_config(struct lpfc_hba *p
goto read_cfg_out;
/* Reset the DFT_HBA_Q_DEPTH to the max xri */
- if (phba->cfg_hba_queue_depth >
- (phba->sli4_hba.max_cfg_param.max_xri -
- lpfc_sli4_get_els_iocb_cnt(phba)))
- phba->cfg_hba_queue_depth =
- phba->sli4_hba.max_cfg_param.max_xri -
- lpfc_sli4_get_els_iocb_cnt(phba);
+ length = phba->sli4_hba.max_cfg_param.max_xri -
+ lpfc_sli4_get_els_iocb_cnt(phba);
+ if (phba->cfg_hba_queue_depth > length) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "3361 HBA queue depth changed from %d to %d\n",
+ phba->cfg_hba_queue_depth, length);
+ phba->cfg_hba_queue_depth = length;
+ }
if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
LPFC_SLI_INTF_IF_TYPE_2)
diff -upNr a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
--- a/drivers/scsi/lpfc/lpfc_sli.c 2013-07-15 07:15:14.692055763 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli.c 2013-07-15 07:15:17.589055828 -0400
@@ -6163,6 +6163,7 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phb
kfree(vpd);
goto out_free_mbox;
}
+
mqe = &mboxq->u.mqe;
phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev);
if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev))
@@ -6249,6 +6250,16 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phb
phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow,
phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow);
+ /* Reset the DFT_LUN_Q_DEPTH to (max xri >> 3) */
+ rc = (phba->sli4_hba.max_cfg_param.max_xri >> 3);
+ if (phba->pport->cfg_lun_queue_depth > rc) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "3362 LUN queue depth changed from %d to %d\n",
+ phba->pport->cfg_lun_queue_depth, rc);
+ phba->pport->cfg_lun_queue_depth = rc;
+ }
+
+
/*
* Discover the port's supported feature set and match it against the
* hosts requests.
diff -upNr a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
--- a/drivers/scsi/lpfc/lpfc_vport.c 2013-05-03 09:24:34.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_vport.c 2013-07-15 07:15:17.659055830 -0400
@@ -387,6 +387,9 @@ lpfc_vport_create(struct fc_vport *fc_vp
/* Create binary sysfs attribute for vport */
lpfc_alloc_sysfs_attr(vport);
+ /* Set the DFT_LUN_Q_DEPTH accordingly */
+ vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth;
+
*(struct lpfc_vport **)fc_vport->dd_data = vport;
vport->fc_vport = fc_vport;
--
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