linux-kernel - Re: [RFC PATCH v8 00/10] Create common DPLL configuration API

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Message-ID: <20230609162739.0d94a704@kernel.org>
Date:   Fri, 9 Jun 2023 16:27:39 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
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Subject: Re: [RFC PATCH v8 00/10] Create common DPLL configuration API

On Fri,  9 Jun 2023 14:18:43 +0200 Arkadiusz Kubalewski wrote:
> Implement common API for clock/DPLL configuration and status reporting.
> The API utilises netlink interface as transport for commands and event
> notifications. This API aim to extend current pin configuration and
> make it flexible and easy to cover special configurations.
> 
> Netlink interface is based on ynl spec, it allows use of in-kernel
> tools/net/ynl/cli.py application to control the interface with properly
> formated command and json attribute strings. Here are few command
> examples of how it works with `ice` driver on supported NIC:

Now I see why you sent the ynl-gen patch you sent :) It's the
combination of nest and multi-attr which doesn't populate the right
policy. Also the enums are not policed right by ynl-gen.

I pushed two fixes to my local tree:
https://github.com/kuba-moo/linux/commits/ynl-c
in case you need them. I'll submit them on Monday.

I also tried to run the user space C code gen (for generating C
API/lib as described in [1]). It seems to work just fine, FWIW, so
just LMK if C bindings would be useful, I can give more instructions.

[1] https://docs.kernel.org/next/userspace-api/netlink/intro-specs.html#ynl-lib