USB_CDC_NCM_NTH32_SIGN
nth.nth32->dwSignature = cpu_to_le32(USB_CDC_NCM_NTH32_SIGN);
if (nth32->dwSignature != cpu_to_le32(USB_CDC_NCM_NTH32_SIGN)) {
.nth_sign = USB_CDC_NCM_NTH32_SIGN,