netdev - Re: [PATCH v2 0/5] Rust abstractions for network device drivers

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Message-Id: <20230712.204543.2226074393539380021.ubuntu@gmail.com>
Date: Wed, 12 Jul 2023 20:45:43 +0900 (JST)
From: FUJITA Tomonori <fujita.tomonori@...il.com>
To: andrew@...n.ch
Cc: fujita.tomonori@...il.com, kuba@...nel.org,
 rust-for-linux@...r.kernel.org, netdev@...r.kernel.org,
 aliceryhl@...gle.com, miguel.ojeda.sandonis@...il.com,
 benno.lossin@...ton.me
Subject: Re: [PATCH v2 0/5] Rust abstractions for network device drivers

Hi,

On Tue, 11 Jul 2023 15:17:33 +0200
Andrew Lunn <andrew@...n.ch> wrote:

>> Or you think that PHY drivers (and probably the abstractions) are
>> relatively simple so merging the abstractions for them is acceptable
>> without a real driver (we could put a real drivers under
>> samples/rust/)?
> 
> PHY drivers are much simpler than Ethernet drivers. But more
> importantly, the API to the rest of network stack is much much
> smaller. So a binding for a sample driver is going to cover a large
> part of that API, unlike your sample Ethernet driver binding which
> covers a tiny part of the API. The PHY binding is then actually
> useful, unlike the binding for Ethernet.

Point taken, I work on PHY drivers first.

> As for reimplementing an existing driver, vs a new driver for hardware
> which is currently unsupported, that would depend on you. You could
> reach out to some vendors and see if they have devices which are
> missing mainline drivers. See if they will donate an RDK and the
> datasheet in return for a free driver written in Rust. Whole new
> drivers do come along reasonably frequently, so there is probably
> scope for a new driver. Automotive is a big source of new code and
> devices at the moment.

Understood. Let me reseach the existing drivers to think about that.

Thanks,