netdev - Re: [patch net-next 03/13] tools: ynl: allow user to pass enum string instead of scalar value

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Message-ID: <20240219125100.538ce0f8@kernel.org>
Date: Mon, 19 Feb 2024 12:51:00 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Jiri Pirko <jiri@...nulli.us>
Cc: netdev@...r.kernel.org, pabeni@...hat.com, davem@...emloft.net,
 edumazet@...gle.com, jacob.e.keller@...el.com,
 swarupkotikalapudi@...il.com, donald.hunter@...il.com, sdf@...gle.com,
 lorenzo@...nel.org, alessandromarcolini99@...il.com
Subject: Re: [patch net-next 03/13] tools: ynl: allow user to pass enum
 string instead of scalar value

On Mon, 19 Feb 2024 18:25:19 +0100 Jiri Pirko wrote:
> +        if enum.type == 'flags' or attr_spec.get('enum-as-flags', False):
> +            scalar = 0
> +            for single_value in value:
> +                scalar += enum.entries[single_value].user_value(as_flags = True)

If the user mistakenly passes a single value for a flag, rather than 
a set, this is going to generate a hard to understand error.
How about we check isinstance(, str) and handle that directly,
whether a flag or not.