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Date: Mon, 1 Jul 2024 12:04:49 -0700
From: Mina Almasry <almasrymina@...gle.com>
To: Donald Hunter <donald.hunter@...il.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-doc@...r.kernel.org, linux-alpha@...r.kernel.org, 
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, 
	sparclinux@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	linux-arch@...r.kernel.org, bpf@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, linux-media@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Jonathan Corbet <corbet@....net>, Richard Henderson <richard.henderson@...aro.org>, 
	Ivan Kokshaysky <ink@...assic.park.msu.ru>, Matt Turner <mattst88@...il.com>, 
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>, Helge Deller <deller@....de>, 
	Andreas Larsson <andreas@...sler.com>, Jesper Dangaard Brouer <hawk@...nel.org>, 
	Ilias Apalodimas <ilias.apalodimas@...aro.org>, Steven Rostedt <rostedt@...dmis.org>, 
	Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
	Arnd Bergmann <arnd@...db.de>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>, 
	Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>, 
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
	Jiri Olsa <jolsa@...nel.org>, Steffen Klassert <steffen.klassert@...unet.com>, 
	Herbert Xu <herbert@...dor.apana.org.au>, David Ahern <dsahern@...nel.org>, 
	Willem de Bruijn <willemdebruijn.kernel@...il.com>, Shuah Khan <shuah@...nel.org>, 
	Sumit Semwal <sumit.semwal@...aro.org>, Christian König <christian.koenig@....com>, 
	Bagas Sanjaya <bagasdotme@...il.com>, Christoph Hellwig <hch@...radead.org>, 
	Nikolay Aleksandrov <razor@...ckwall.org>, Pavel Begunkov <asml.silence@...il.com>, David Wei <dw@...idwei.uk>, 
	Jason Gunthorpe <jgg@...pe.ca>, Yunsheng Lin <linyunsheng@...wei.com>, 
	Shailend Chand <shailend@...gle.com>, Harshitha Ramamurthy <hramamurthy@...gle.com>, 
	Shakeel Butt <shakeel.butt@...ux.dev>, Jeroen de Borst <jeroendb@...gle.com>, 
	Praveen Kaligineedi <pkaligineedi@...gle.com>, Stanislav Fomichev <sdf@...gle.com>
Subject: Re: [PATCH net-next v15 02/14] net: netdev netlink api to bind
 dma-buf to a net device

On Fri, Jun 28, 2024 at 3:10 AM Donald Hunter <donald.hunter@...il.com> wrote:
>
> Mina Almasry <almasrymina@...gle.com> writes:
> > +  -
> > +    name: bind-dmabuf
> > +    attributes:
> > +      -
> > +        name: ifindex
> > +        doc: netdev ifindex to bind the dma-buf to.
>
> Minor nit:
>
> The series uses a mix of dmabuf and dma-buf but the doc additions
> (devmem.rst) consistently uses dmabuf. I think it would be helpful to be
> consistent here and say 'devmem dmabuf' in the docstring to highlight
> whos dmabuf it is and keep the generated netdev docs in alignment.
>

To be honest, even the dmabuf docs mixes 'dma-buf' and 'dmabuf', to my eye:

https://docs.kernel.org/driver-api/dma-buf.html

I can edit these docs I'm adding so these are consistent.

But on 'devmem dmabuf', not sure to be honest. Technically all dmabufs
are supported, even non-devmem ones. I'm not sure non-devmem dmabufs
are common at all, the only example I can think of is udmabuf whose
primary user is qemu and testing, so it's somewhat implied that the
dmabuf is devmem, and even if it isn't, it would be supported. I
prefer to keep the docs saying just 'dmabuf' as technically all are
supported. Maybe I should add a note about this somewhere in the
dedicated docs.

-- 
Thanks,
Mina

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