Rust abstractions for network PHY drivers

This patchset adds Rust abstractions for network PHY drivers. It
doesn't fully cover the C APIs for PHY drivers yet but I think that
it's already useful. I implement two PHY drivers (Asix AX88772A PHYs
and Realtek Generic FE-GE). Seems they work well with real hardware.

The first patch introduces Rust bindings for the C APIs for network
PHY drivers.

The second patch adds the bindings to the ETHERNET PHY LIBRARY, and
also me as a maintainer of the Rust bindings (as Andrew Lunn
suggested).

The last patch introduces the Rust version of Asix PHY drivers,
drivers/net/phy/ax88796b.c. The features are equivalent to the C
version. You can choose C (by default) or Rust version on kernel
configuration.

There is no major changes from v1; build failure fix and function renaming.

v1:
https://lore.kernel.org/netdev/20231002085302.2274260-3-f...

FUJITA Tomonori (3):
  rust: core abstractions for network PHY drivers
  MAINTAINERS: add Rust PHY abstractions to the ETHERNET PHY LIBRARY
  net: phy: add Rust Asix PHY driver

 MAINTAINERS                      |   2 +
 drivers/net/phy/Kconfig          |   7 +
 drivers/net/phy/Makefile         |   6 +-
 drivers/net/phy/ax88796b_rust.rs | 129 ++++++
 init/Kconfig                     |   1 +
 rust/Makefile                    |   1 +
 rust/bindings/bindings_helper.h  |   3 +
 rust/kernel/lib.rs               |   2 +
 rust/kernel/net.rs               |   5 +
 rust/kernel/net/phy.rs           | 706 +++++++++++++++++++++++++++++++
 rust/uapi/uapi_helper.h          |   1 +
 11 files changed, 862 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/phy/ax88796b_rust.rs
 create mode 100644 rust/kernel/net.rs
 create mode 100644 rust/kernel/net/phy.rs


base-commit: b2516f7af9d238ebc391bdbdae01ac9528f1109e
-- 
2.34.1