netdev - Re: [PATCH net-next 3/3] selftests: net: add YNL test framework

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Message-ID: <20251029164159.2dbc615a@kernel.org>
Date: Wed, 29 Oct 2025 16:41:59 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Hangbin Liu <liuhangbin@...il.com>
Cc: netdev@...r.kernel.org, Donald Hunter <donald.hunter@...il.com>, "David
 S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo
 Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Jan Stancek
 <jstancek@...hat.com>, "Matthieu Baerts (NGI0)" <matttbe@...nel.org>,
 Asbjørn Sloth Tønnesen <ast@...erby.net>,
 Stanislav Fomichev <sdf@...ichev.me>, Shuah Khan <shuah@...nel.org>, Ido
 Schimmel <idosch@...dia.com>, Guillaume Nault <gnault@...hat.com>, Petr
 Machata <petrm@...dia.com>, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next 3/3] selftests: net: add YNL test framework

On Wed, 29 Oct 2025 08:22:45 +0000 Hangbin Liu wrote:
> Add a test framework for YAML Netlink (YNL) tools, covering both CLI and
> ethtool functionality. The framework includes:
> 
> 1) cli: family listing, netdev, ethtool, rt-* families, and nlctrl
>    operations
> 2) ethtool: device info, statistics, ring/coalesce/pause parameters, and
>    feature gettings
> 
> The current YNL syntax is a bit obscure, and end users may not always know
> how to use it. This test framework provides usage examples and also serves
> as a regression test to catch potential breakages caused by future changes.

Hm, my knee-jerk reaction was that we should avoid adding too much ynl
stuff to the kernel at this point. But looking closer it's not that
long.

Do I understand correctly, tho, that you're testing _system_ YNL?
Not what's in tree?