wps_build_serial_number() function

wps_build_probe_req_ie - Build WPS IE for Probe Request @pw_id: Password ID (DEV_PW_PUSHBUTTON for active PBC and DEV_PW_DEFAULT for most other use cases) @dev: Device attributes @uuid: Own UUID @req_type: Value for Request Type attribute @num_req_dev_types: Number of requested device types @req_dev_types: Requested device types (8 * num_req_dev_types octets) or %NULL if none Returns: WPS IE or %NULL on failure The caller is responsible for freeing the buffer.