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

FUJITA Tomonori
2023-11-21T00:50:00Z

On Mon, 20 Nov 2023 15:13:23 +0100
Andrew Lunn <andrew@lunn.ch> wrote:

>> 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?

Yes, all the symbols for ax88796b_rust use lower case.