netdev - Re: [PATCH net-next v7 2/5] rust: net::phy add module_phy

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Message-Id: <20231121.094958.1954120205224730676.fujita.tomonori@gmail.com>
Date: Tue, 21 Nov 2023 09:49:58 +0900 (JST)
From: FUJITA Tomonori <fujita.tomonori@...il.com>
To: andrew@...n.ch
Cc: fujita.tomonori@...il.com, benno.lossin@...ton.me,
 boqun.feng@...il.com, netdev@...r.kernel.org,
 rust-for-linux@...r.kernel.org, tmgross@...ch.edu,
 miguel.ojeda.sandonis@...il.com, wedsonaf@...il.com
Subject: Re: [PATCH net-next v7 2/5] rust: net::phy add module_phy_driver
 macro

On Mon, 20 Nov 2023 15:13:23 +0100
Andrew Lunn <andrew@...n.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.