IBT_CM_CLOSED_ALREADY
case IBT_CM_CLOSED_ALREADY:
case IBT_CM_CLOSED_ALREADY: /* duplicate close */
*ret_status = IBT_CM_CLOSED_ALREADY;
IBT_CM_CLOSED_ALREADY;
IBT_CM_CLOSED_ALREADY;
case IBT_CM_CLOSED_ALREADY:
case IBT_CM_CLOSED_ALREADY: