linux UDD driver

Linux UDD (User-Defined Driver) is a framework that allows users to write custom device drivers in user space, rather than kernel space. This means that the driver runs as a regular user process, rather than being part of the kernel.

UDD is built on top of the Linux User-Mode Driver Framework (UMDF), which provides a set of APIs for communicating with kernel drivers. With UDD, developers can write drivers in C or C++ using the UMDF APIs, and the resulting driver can be loaded and unloaded like a regular kernel driver.

One of the main advantages of UDD is that it allows for faster development and testing of drivers, since the driver code is not part of the kernel and can be easily modified and debugged. However, since UDD drivers run in user space, they are less efficient than kernel drivers and may have higher latency and lower throughput.

Overall, UDD is a useful tool for developers who want to create custom drivers for Linux, but it may not be suitable for all use cases.