diff options
| author | James Smart <james.smart@emulex.com> | 2010-07-14 15:32:10 -0400 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 09:05:41 -0500 |
| commit | 7dc517df3ace15b5a29b331abe0af86ed4836236 (patch) | |
| tree | 7f95a4b9833b1549078244c28d4ddcde56d847ed /drivers/scsi/lpfc/lpfc_attr.c | |
| parent | 3804dc84b8c11038ef75d97fd11e43658f623665 (diff) | |
[SCSI] lpfc 8.3.15: Add target queue depth throttling
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index a7c6b739055..868874c28f9 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -2208,6 +2208,13 @@ LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 128, "Max number of FCP commands we can queue to a specific LUN"); /* +# tgt_queue_depth: This parameter is used to limit the number of outstanding +# 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"); + +/* # 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, @@ -3122,7 +3129,7 @@ lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val) continue; if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) continue; - ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH; + ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; } spin_unlock_irq(shost->host_lock); return 0; @@ -3326,6 +3333,7 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_lpfc_temp_sensor, &dev_attr_lpfc_log_verbose, &dev_attr_lpfc_lun_queue_depth, + &dev_attr_lpfc_tgt_queue_depth, &dev_attr_lpfc_hba_queue_depth, &dev_attr_lpfc_peer_port_login, &dev_attr_lpfc_nodev_tmo, @@ -3387,6 +3395,7 @@ struct device_attribute *lpfc_vport_attrs[] = { &dev_attr_lpfc_drvr_version, &dev_attr_lpfc_log_verbose, &dev_attr_lpfc_lun_queue_depth, + &dev_attr_lpfc_tgt_queue_depth, &dev_attr_lpfc_nodev_tmo, &dev_attr_lpfc_devloss_tmo, &dev_attr_lpfc_hba_queue_depth, @@ -4575,6 +4584,7 @@ lpfc_get_vport_cfgparam(struct lpfc_vport *vport) { lpfc_log_verbose_init(vport, lpfc_log_verbose); lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth); + lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth); lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo); lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo); lpfc_peer_port_login_init(vport, lpfc_peer_port_login); |