netdev - Re: [PATCH net-next 2/6] tools: ynl: don't return None for dumps

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Message-ID: <m24jc8i4wx.fsf@gmail.com>
Date: Thu, 11 Apr 2024 11:12:46 +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,  shuah@...nel.org,  petrm@...dia.com,
  linux-kselftest@...r.kernel.org,  jiri@...nulli.us
Subject: Re: [PATCH net-next 2/6] tools: ynl: don't return None for dumps

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

> YNL currently reports None for empty dump:
>
>  $ cli.py ...netdev.yaml --dump page-pool-get
>  None
>
> This doesn't matter for the CLI but when writing YNL based tests
> having to deal with either list or None is annoying. Limit the
> None conversion to non-dump ops:
>
>  $ cli.py ...netdev.yaml --dump page-pool-get
>  []

Makes sense and I'll need to update my --multi patch to retain this
behaviour.

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

> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
> CC: donald.hunter@...il.com
> CC: jiri@...nulli.us
> ---
>  tools/net/ynl/lib/ynl.py | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
> index 0ba5f6fb8747..a67f7b6fef92 100644
> --- a/tools/net/ynl/lib/ynl.py
> +++ b/tools/net/ynl/lib/ynl.py
> @@ -995,9 +995,11 @@ genl_family_name_to_id = None
>                      rsp_msg.update(self._decode_struct(decoded.raw, op.fixed_header))
>                  rsp.append(rsp_msg)
>  
> +        if dump:
> +            return rsp
>          if not rsp:
>              return None
> -        if not dump and len(rsp) == 1:
> +        if len(rsp) == 1:
>              return rsp[0]
>          return rsp