linux-kernel - Re: [PATCH v3 0/3] Rust scatterlist abstractions

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Message-ID: <2023061017-usable-bountiful-3f59@gregkh>
Date:   Sat, 10 Jun 2023 17:33:47 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Qingsong Chen <changxian.cqs@...group.com>
Cc:     linux-kernel@...r.kernel.org,
        田洪亮 <tate.thl@...group.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v3 0/3] Rust scatterlist abstractions

On Sat, Jun 10, 2023 at 06:49:06PM +0800, Qingsong Chen wrote:
> Hi All!
> 
> This is a version of scatterlist abstractions for Rust drivers.
> 
> Scatterlist is used for efficient management of memory buffers, which is
> essential for many kernel-level operations such as Direct Memory Access
> (DMA) transfers and crypto APIs.
> 
> This patch should be a good start to introduce the crypto APIs for Rust
> drivers and to develop cipher algorithms in Rust later.

I thought we were getting rid of the scatter list api for the crypto
drivers, so this shouldn't be needed going forward, right?  Why not just
use the direct apis instead?

And what crypto protocols are needed to be done in rust that we are
currently missing in the C versions?

thanks,

greg k-h