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[SCSI] qla4xxx: Fixed session destroy issue on link up-down.

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During link down, iscsid tries to do re-login to failed session. In case of
link down-up-down, LLD was sending connection login failed event to iscsid,
which is destroying the session, instead we have to continue re-login by
sending connection err event.

JIRA Key: UPSISCSI-134

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Manish Rangankar 2011-10-07 16:55:47 -07:00 committed by James Bottomley
parent 736cf369c9
commit 98270ab45c
2 changed files with 21 additions and 1 deletions
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16
drivers/scsi/qla4xxx/ql4_init.c
View File

@ -931,6 +931,22 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
break; break;
} }
break; break;
case DDB_DS_SESSION_FAILED:
switch (state) {
case DDB_DS_SESSION_ACTIVE:
case DDB_DS_DISCOVERY:
iscsi_conn_login_event(ddb_entry->conn,
ISCSI_CONN_STATE_LOGGED_IN);
qla4xxx_update_session_conn_param(ha, ddb_entry);
status = QLA_SUCCESS;
break;
case DDB_DS_SESSION_FAILED:
iscsi_session_failure(ddb_entry->sess->dd_data,
ISCSI_ERR_CONN_FAILED);
status = QLA_SUCCESS;
break;
}
break;
default: default:
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n", DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
__func__)); __func__));

6
drivers/scsi/qla4xxx/ql4_os.c
View File

@ -1158,7 +1158,11 @@ static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
goto exit_conn_start; goto exit_conn_start;
} }
ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS; if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
ddb_entry->fw_ddb_device_state));
exit_set_param: exit_set_param:
iscsi_conn_start(cls_conn); iscsi_conn_start(cls_conn);