[PATCH net-next 10/11] tools: ynl: decode hex input

[Sabrina Dubroca]

2025-09-04, 22:01:33 +0000, Asbjørn Sloth Tønnesen wrote:
> This patch add support for decoding hex input, so
> that binary attributes can be read through --json.
> 
> Example (using future wireguard.yaml):
>  $ sudo ./tools/net/ynl/pyynl/cli.py --family wireguard \
>    --do set-device --json '{"ifindex":3,
>      "private-key":"2a ae 6c 35 c9 4f cf <... to 32 bytes>"}'
> 
> Signed-off-by: Asbjørn Sloth Tønnesen <ast at fiberby.net>
> ---
>  tools/net/ynl/pyynl/lib/ynl.py | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/tools/net/ynl/pyynl/lib/ynl.py b/tools/net/ynl/pyynl/lib/ynl.py
> index a37294a751da..78c0245ca587 100644
> --- a/tools/net/ynl/pyynl/lib/ynl.py
> +++ b/tools/net/ynl/pyynl/lib/ynl.py
> @@ -973,6 +973,8 @@ class YnlFamily(SpecFamily):
>                  raw = ip.packed
>              else:
>                  raw = int(ip)
> +        elif attr_spec.display_hint == 'hex':
> +            raw = bytes.fromhex(string)

I'm working on a spec for macsec and ended up with a similar change,
but doing instead:

+        elif attr_spec.display_hint == 'hex':
+            raw = int(string, 16)

since the destination attribute is u32/u64 and not binary for macsec.

So maybe this should be:

+            if attr_spec['type'] == 'binary':
+                raw = bytes.fromhex(string)
+            else:
+                raw = int(string, 16)

to cover both cases?

I think it matches better what's already in _formatted_string.

(I don't mind having the current patch go in and making this change
together with the macsec spec when it's ready)

>          else:
>              raise Exception(f"Display hint '{attr_spec.display_hint}' not implemented"
>                              f" when parsing '{attr_spec['name']}'")
> -- 
> 2.51.0
> 
> 

-- 
Sabrina