Re: [PATCH net-next v7 2/5] rust: net::phy add module_phy_driver macro

Andrew Lunn
2023-11-20T14:13:27Z

> The Rust ax88796b driver doesn't export anything. The Rust and C
> drivers handle the device_table in the same way when they are built as
> a module.
>
> $ grep __mod_mdio /proc/kallsyms
> ffffffffa0358058 r __mod_mdio__phydev_device_table [ax88796b_rust]
>
> $ grep __mod_mdio /proc/kallsyms
> ffffffffa0288010 d __mod_mdio__asix_tbl_device_table [ax88796b]

I checked what r and d mean. If they are upper case, they are
exported. Lower case means they are not exported.

My laptop is using the realtek PHY driver:

0000000000000000 r __mod_mdio__realtek_tbl_device_table [realtek]

Also lower r.

Looking at all the symbols for the realtek driver, all the symbols use
lower case. Nothing is exported.

Is that what you see for the ax88796b_rust?

Andrew