Commit f20fd544 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by David S. Miller
Browse files

rust: core abstractions for network PHY drivers 

This patch adds abstractions to implement network PHY drivers; the
driver registration and bindings for some of callback functions in
struct phy_driver and many genphy_ functions.

This feature is enabled with CONFIG_RUST_PHYLIB_ABSTRACTIONS=y.

This patch enables unstable const_maybe_uninit_zeroed feature for
kernel crate to enable unsafe code to handle a constant value with
uninitialized data. With the feature, the abstractions can initialize
a phy_driver structure with zero easily; instead of initializing all
the members by hand. It's supposed to be stable in the not so distant
future.

Link: https://github.com/rust-lang/rust/pull/116218



Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarAlice Ryhl <aliceryhl@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f3c2caac

drivers/net/phy/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -60,6 +60,14 @@ config FIXED_PHY 


	  Currently tested with mpc866ads and mpc8349e-mitx.



config RUST_PHYLIB_ABSTRACTIONS

        bool "Rust PHYLIB abstractions support"

        depends on RUST

        depends on PHYLIB=y

        help

          Adds support needed for PHY drivers written in Rust. It provides

          a wrapper around the C phylib core.



config SFP

	tristate "SFP cage support"

	depends on I2C && PHYLINK

rust/bindings/bindings_helper.h

+3 −0
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@@ -8,6 +8,9 @@ 


#include <kunit/test.h>

#include <linux/errname.h>

#include <linux/ethtool.h>

#include <linux/mdio.h>

#include <linux/phy.h>

#include <linux/slab.h>

#include <linux/refcount.h>

#include <linux/wait.h>

rust/kernel/lib.rs

+3 −0
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@@ -14,6 +14,7 @@ 
#![no_std]

#![feature(allocator_api)]

#![feature(coerce_unsized)]

#![feature(const_maybe_uninit_zeroed)]

#![feature(dispatch_from_dyn)]

#![feature(new_uninit)]

#![feature(offset_of)]
@@ -38,6 +39,8 @@ 
pub mod ioctl;

#[cfg(CONFIG_KUNIT)]

pub mod kunit;

#[cfg(CONFIG_NET)]

pub mod net;

pub mod prelude;

pub mod print;

mod static_assert;

rust/kernel/net.rs

0 → 100644
+6 −0
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// SPDX-License-Identifier: GPL-2.0



//! Networking.



#[cfg(CONFIG_RUST_PHYLIB_ABSTRACTIONS)]

pub mod phy;

rust/kernel/net/phy.rs

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+755 −0

File added.

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