Re: [PATCH v3] doc: add new driver guidelines

[Nandini Persad <nandinipersad361@gmail.com>]

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Hi Ferruh,

I will work with Stephen on this. For the tone of the list, I believe we
can try different ways to make the tone more friendly, while still being
concise.

What about something like this:
- Avoid including unused headers (process-iwyu.py).
- Keep compiler warnings enabled in the build file.
- Instead of using #ifdef with driver-specific macros, opt for runtime
configuration.
- Document device parameters in the driver guide.
- Make device operations structs 'const'.
- Use dynamic logging.
- Skip DPDK version checks (RTE_VERSION_NUM) in the upstream code.
- Add SPDX license tags and copyright notices on all sides.
- Don’t introduce public APIs directly from the driver.

It's slightly more friendly.

Let me know what you think, I'm open to trying another way.

On Tue, Sep 10, 2024 at 5:16 PM Ferruh Yigit <ferruh.yigit@amd.com> wrote:

> On 9/10/2024 3:58 PM, Nandini Persad wrote:
> > This document was created to assist contributors
> > in creating DPDK drivers, providing suggestions
> > and guidelines for how to upstream effectively.
> >
>
> There are minor differences in this v3 and v2, isn't this version on top
> of v2, can those changes be from Stephen?
>
> <...>
>
> > +
> > +Additional Suggestions
> > +----------------------
> > +
> > +* We recommend using DPDK macros instead of inventing new ones in the
> PMD.
> > +* Do not include unused headers (process-iwyu.py).
> > +* Do not disable compiler warning in the build file.
> > +* Do not use #ifdef with driver-defined macros, instead prefer runtime
> configuration.
> > +* Document device parameters in the driver guide.
> > +* Make device operations struct 'const'.
> > +* Use dynamic logging.
> > +* Do not use DPDK version checks (via RTE_VERSION_NUM) in the upstream
> code.
> > +* Be sure to have SPDX license tags and copyright notice on each side.
> > +* Do not introduce public Apis directly from the driver.
> >
>
> API (Application Programming Interface) is an acronym and should be all
> uppercase, like 'APIs'.
>
> Overall the language in this list is imperative, I think it helps to
> make it simple, but I am not sure about the tone, I wonder if we can do
> better, do you have any suggestions?
>
>
> > +
> > +
> > +Dependencies
> > +------------
> > +
> > +At times, drivers may have dependencies to external software.
> > +For driver dependencies, same DPDK rules for dependencies applies.
> > +Dependencies should be publicly and freely available to
> > +upstream the driver.
> > +
> > +
> > +Test Tools
> > +----------
> > +
> > +Per patch in a patch series, be sure to use the proper test tools.
> > +
> > +* checkpatches.sh
> > +* check-git-log.sh
> > +* check-meson.py
> > +* check-doc-vs-code.sh
> > +* check-spdx-tag.sh
> >
>
> `check-spdx-tag.sh` seems moved in v2 to "additional suggestions", I am
> for keeping it here, as "additional suggestions" are more things to take
> into consideration during design/development, above are actual scripts
> that we can use to verify code.
>
> And long term intention was to move this "tools to run list" to a more
> generic documentation, as these are not really specific to new PMD
> guide, but "additional suggestions" will stay in this document.
>
>

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