linux-kernel - Re: [PATCH net-next 03/11] tools: ynl-gen: add sub-type check

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Message-ID: <eb1ed54b-f399-4e5a-9ffe-d42b5e969461@intel.com>
Date: Fri, 5 Sep 2025 17:20:20 -0700
From: Jacob Keller <jacob.e.keller@...el.com>
To: Asbjørn Sloth Tønnesen <ast@...erby.net>, "Jason A.
 Donenfeld" <Jason@...c4.com>, "David S. Miller" <davem@...emloft.net>, "Eric
 Dumazet" <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>
CC: Donald Hunter <donald.hunter@...il.com>, Simon Horman <horms@...nel.org>,
	Andrew Lunn <andrew+netdev@...n.ch>, <wireguard@...ts.zx2c4.com>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 03/11] tools: ynl-gen: add sub-type check



On 9/4/2025 3:01 PM, Asbjørn Sloth Tønnesen wrote:
> Add a check to verify that the sub-type is "nest", and throw an
> exception if no policy could be generated, as a guard to prevent
> against generating a bad policy.
> 
> This is a trivial patch with no behavioural changes intended.
> > Signed-off-by: Asbjørn Sloth Tønnesen <ast@...erby.net>
> ---

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>

>  tools/net/ynl/pyynl/ynl_gen_c.py | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
> index b7de7f6b1fc7..04c26ed92ca3 100755
> --- a/tools/net/ynl/pyynl/ynl_gen_c.py
> +++ b/tools/net/ynl/pyynl/ynl_gen_c.py
> @@ -826,8 +826,10 @@ class TypeArrayNest(Type):
>              return f'.type = YNL_PT_U{c_upper(self.sub_type[1:])}, '
>          elif self.attr['sub-type'] == 'binary' and 'exact-len' in self.checks:
>              return f'.type = YNL_PT_BINARY, .len = {self.checks["exact-len"]}, '
> -        else:
> +        elif self.attr['sub-type'] == 'nest':
>              return f'.type = YNL_PT_NEST, .nest = &{self.nested_render_name}_nest, '
> +        else:
> +            raise Exception(f"Typol for ArrayNest sub-type {self.attr['sub-type']} not supported, yet")
>  
>      def _attr_get(self, ri, var):
>          local_vars = ['const struct nlattr *attr2;']



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