diff options
Diffstat (limited to 'drivers/scsi/lpfc')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index 5625a8c2a8f..b897e522a96 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -520,6 +520,16 @@ LPFC_ATTR_R(lun_queue_depth, 30, 1, 128, "Max number of FCP commands we can queue to a specific LUN"); /* +# hba_queue_depth: This parameter is used to limit the number of outstanding +# commands per lpfc HBA. Value range is [32,8192]. If this parameter +# value is greater than the maximum number of exchanges supported by the HBA, +# then maximum number of exchanges supported by the HBA is used to determine +# the hba_queue_depth. +*/ +LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192, + "Max number of FCP commands we can queue to a lpfc HBA"); + +/* # Some disk devices have a "select ID" or "select Target" capability. # From a protocol standpoint "select ID" usually means select the # Fibre channel "ALPA". In the FC-AL Profile there is an "informative @@ -649,6 +659,7 @@ struct class_device_attribute *lpfc_host_attrs[] = { &class_device_attr_lpfc_drvr_version, &class_device_attr_lpfc_log_verbose, &class_device_attr_lpfc_lun_queue_depth, + &class_device_attr_lpfc_hba_queue_depth, &class_device_attr_lpfc_nodev_tmo, &class_device_attr_lpfc_fcp_class, &class_device_attr_lpfc_use_adisc, @@ -1411,5 +1422,9 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) default: phba->cfg_hba_queue_depth = LPFC_DFT_HBA_Q_DEPTH; } + + if (phba->cfg_hba_queue_depth > lpfc_hba_queue_depth) + lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth); + return; } |