netdev - Re: [PATCH net-next v1 3/4] tools/net/ynl: Extend array-nest for multi level nesting

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Message-ID: <CAD4GDZxP1VwOw2uTtZH27oEx8jooR1a9jrM88Pg2MLk+T1aQ7w@mail.gmail.com>
Date: Mon, 4 Mar 2024 16:21:11 +0000
From: Donald Hunter <donald.hunter@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
	Jacob Keller <jacob.e.keller@...el.com>, Jiri Pirko <jiri@...nulli.us>, 
	Stanislav Fomichev <sdf@...gle.com>, donald.hunter@...hat.com
Subject: Re: [PATCH net-next v1 3/4] tools/net/ynl: Extend array-nest for
 multi level nesting

On Mon, 4 Mar 2024 at 15:22, Jakub Kicinski <kuba@...nel.org> wrote:
>
> Yeah.. look at the example I used for type-value :)
>
> https://docs.kernel.org/next/userspace-api/netlink/genetlink-legacy.html#type-value

Apologies, I totally missed this. Is the intended usage something like this:

      -
        name: policy
        type: nest-type-value
        type-value: [ policy-id, attr-id ]
        nested-attributes: policy-attrs

> YAML specs describe information on how to parse data YNL doesn't have
> to understand, just format correctly. The base level of netlink
> processing, applicable to all families, is a different story.
> I think hand-coding that is more than okay. The goal is not to express
> everything in YAML but to avoid duplicated work per family, if that
> makes sense.

Okay, I can go ahead and hard-code the policy attr decoding for extack messages.