A Concise Rust Kernel Driver: The AX88796B Ethernet Controller Example

This article details the experience of writing a Linux kernel driver for the AX88796B embedded Ethernet controller using Rust. The author contrasts the Rust version with its C counterpart, highlighting differences in syntax, types, and APIs. The Rust version is remarkably concise, at just over 100 lines, leveraging macros to simplify driver registration and using traits and the `#[vtable]` macro for seamless integration with existing C code. The article clearly explains the advantages of Rust in kernel driver development, such as memory safety guarantees through references and simplified error handling using `Result` and the `try` operator, providing valuable insights for Rust kernel driver development.