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authorNilesh Javali <nilesh.javali@qlogic.com>2011-12-18 21:40:44 -0800
committerJames Bottomley <JBottomley@Parallels.com>2012-01-10 17:01:22 -0600
commitc28eaaca7acea214937fb9b3ae45e001d49947bf (patch)
tree68810f9b907fce5e408948722486d28f502c8795 /drivers/scsi/qla4xxx/ql4_os.c
parent4a4bc2e90c1c689bf929914256310361d4012df1 (diff)
[SCSI] qla4xxx: Limit the ACB Default Timeout value to 12s
A wrong default timeout value programmed in the adapter causes driver to wait for that much time while waiting for target discoveries to complete. This could add huge delays during the driver load time. To avoid this, limit the default timeout value to 12 seconds if the default timeout value set in adapter is less than 12 seconds and greater than 120 seconds. Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_os.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 87e3699d7ea..09b28f8513a 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -1630,7 +1630,9 @@ void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
/* Update timers after login */
ddb_entry->default_relogin_timeout =
- le16_to_cpu(fw_ddb_entry->def_timeout);
+ (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
+ (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
+ le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
ddb_entry->default_time2wait =
le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
@@ -3882,6 +3884,8 @@ static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry)
{
+ uint16_t def_timeout;
+
ddb_entry->ddb_type = FLASH_DDB;
ddb_entry->fw_ddb_index = INVALID_ENTRY;
ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
@@ -3892,9 +3896,10 @@ static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
atomic_set(&ddb_entry->relogin_timer, 0);
atomic_set(&ddb_entry->relogin_retry_count, 0);
-
+ def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
ddb_entry->default_relogin_timeout =
- le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
+ (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
+ def_timeout : LOGIN_TOV;
ddb_entry->default_time2wait =
le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
}
@@ -4228,7 +4233,10 @@ void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
}
/* Wait to ensure all sendtargets are done for min 12 sec wait */
- tmo = ((ha->def_timeout < LOGIN_TOV) ? LOGIN_TOV : ha->def_timeout);
+ tmo = ((ha->def_timeout > LOGIN_TOV) &&
+ (ha->def_timeout < LOGIN_TOV * 10) ?
+ ha->def_timeout : LOGIN_TOV);
+
DEBUG2(ql4_printk(KERN_INFO, ha,
"Default time to wait for build ddb %d\n", tmo));