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

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Message-ID: <2023071049-gigabyte-timing-0673@gregkh>
Date: Mon, 10 Jul 2023 21:53:23 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Jakub Kicinski <kuba@...nel.org>
Cc: FUJITA Tomonori <fujita.tomonori@...il.com>,
	rust-for-linux@...r.kernel.org, netdev@...r.kernel.org,
	andrew@...n.ch, aliceryhl@...gle.com,
	miguel.ojeda.sandonis@...il.com, benno.lossin@...ton.me
Subject: Re: [PATCH v2 0/5] Rust abstractions for network device drivers

On Mon, Jul 10, 2023 at 11:29:52AM -0700, Jakub Kicinski wrote:
> On Mon, 10 Jul 2023 16:36:58 +0900 FUJITA Tomonori wrote:
> > This patchset adds minimum Rust abstractions for network device
> > drivers and an example of a Rust network device driver, a simpler
> > version of drivers/net/dummy.c.
> > 
> > The major change is a way to drop an skb (1/5 patch); a driver needs
> > to explicitly call a function to drop a skb. The code to let a skb
> > go out of scope can't be compiled.
> > 
> > I dropped get_stats64 support patch that the current sample driver
> > doesn't use. Instead I added a patch to update the NETWORKING DRIVERS
> > entry in MAINTAINERS.
> 
> I'd like to double down on my suggestion to try to implement a real
> PHY driver. Most of the bindings in patch 3 will never be used by
> drivers. (Re)implementing a real driver will guide you towards useful
> stuff and real problems.

And I'd recommend that we not take any more bindings without real users,
as there seems to be just a collection of these and it's hard to
actually review them to see how they are used...

thanks,

greg k-h