---
title: bFunctionProtocol
framework: kernel
role: symbol
role_heading: Instance Property
path: kernel/iousbinterfaceassociationdescriptor/1546423-bfunctionprotocol
---

# bFunctionProtocol

The function protocol.

## Declaration

```occ
uint8_t bFunctionProtocol;
```

## See Also

### Getting the Properties

- [bLength](kernel/iousbinterfaceassociationdescriptor/1545909-blength.md)
- [bDescriptorType](kernel/iousbinterfaceassociationdescriptor/1546180-bdescriptortype.md)
- [bFirstInterface](kernel/iousbinterfaceassociationdescriptor/1546445-bfirstinterface.md)
- [bInterfaceCount](kernel/iousbinterfaceassociationdescriptor/1545905-binterfacecount.md)
- [bFunctionClass](kernel/iousbinterfaceassociationdescriptor/1546273-bfunctionclass.md)
- [bFunctionSubClass](kernel/iousbinterfaceassociationdescriptor/1546578-bfunctionsubclass.md)
- [iFunction](kernel/iousbinterfaceassociationdescriptor/1546285-ifunction.md)