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Message-ID: <ZS10NtQgd_BJZ3RU@google.com>
Date: Mon, 16 Oct 2023 10:34:46 -0700
From: Stanislav Fomichev <sdf@...gle.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
pabeni@...hat.com, lorenzo@...nel.org, willemb@...gle.com
Subject: Re: [PATCH net-next 1/3] ynl: netdev: drop unnecessary enum-as-flags
On 10/03, Jakub Kicinski wrote:
> enum-as-flags can be used when enum declares bit positions but
> we want to carry bitmask in an attribute. If the definition
> is already provided as flags there's no need to indicate
> the flag-iness of the attribute.
Jakub, Willem hit an issue with this commit when running cli.py:
./cli.py --spec $KDIR/Documentation/netlink/specs/netdev.yaml --dump dev-get --json='{"ifindex": 12}'
Traceback (most recent call last):
File "/usr/local/google/home/sdf/net-next/tools/net/ynl/./cli.py", line 60, in <module>
main()
File "/usr/local/google/home/sdf/net-next/tools/net/ynl/./cli.py", line 51, in main
reply = ynl.dump(args.dump, attrs)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/google/home/sdf/net-next/tools/net/ynl/lib/ynl.py", line 729, in dump
return self._op(method, vals, [], dump=True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/google/home/sdf/net-next/tools/net/ynl/lib/ynl.py", line 714, in _op
rsp_msg = self._decode(decoded.raw_attrs, op.attr_set.name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/google/home/sdf/net-next/tools/net/ynl/lib/ynl.py", line 540, in _decode
decoded = self._decode_enum(decoded, attr_spec)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/google/home/sdf/net-next/tools/net/ynl/lib/ynl.py", line 486, in _decode_enum
value = enum.entries_by_val[raw].name
~~~~~~~~~~~~~~~~~~~^^^^^
KeyError: 127
I do see we have special handing for enum-as-flags to parse out the
individual fields:
if 'enum-as-flags' in attr_spec and attr_spec['enum-as-flags']:
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
> Documentation/netlink/specs/netdev.yaml | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
> index c46fcc78fc04..14511b13f305 100644
> --- a/Documentation/netlink/specs/netdev.yaml
> +++ b/Documentation/netlink/specs/netdev.yaml
> @@ -74,7 +74,6 @@ name: netdev
> doc: Bitmask of enabled xdp-features.
> type: u64
> enum: xdp-act
> - enum-as-flags: true
> -
> name: xdp-zc-max-segs
> doc: max fragment count supported by ZC driver
> @@ -87,7 +86,6 @@ name: netdev
> See Documentation/networking/xdp-rx-metadata.rst for more details.
> type: u64
> enum: xdp-rx-metadata
> - enum-as-flags: true
>
> operations:
> list:
> --
> 2.41.0
>
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