netdev - Re: [PATCH net-next 05/11] tools: ynl-gen: support passing selector to a nest

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Message-ID: <m2sel2jak4.fsf@gmail.com>
Date: Sun, 18 May 2025 14:46:51 +0100
From: Donald Hunter <donald.hunter@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net,  netdev@...r.kernel.org,  edumazet@...gle.com,
  pabeni@...hat.com,  andrew+netdev@...n.ch,  horms@...nel.org,
  jacob.e.keller@...el.com,  sdf@...ichev.me,  jstancek@...hat.com
Subject: Re: [PATCH net-next 05/11] tools: ynl-gen: support passing selector
 to a nest

Jakub Kicinski <kuba@...nel.org> writes:

> In rtnetlink all submessages had the selector at the same level
> of nesting as the submessage. We could refer to the relevant
> attribute from the current struct. In TC, stats are one level
> of nesting deeper than "kind". Teach the code-gen about structs
> which need to be passed a selector by the caller for parsing.
>
> Because structs are "topologically sorted" one pass of propagating
> the selectors down is enough.
>
> For generating netlink message we depend on the presence bits
> so no selector passing needed there.
>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Reviewed-by: Donald Hunter <donald.hunter@...il.com>