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tools: ynl-gen: introduce support for bitfield32 attribute type

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Introduce support for attribute type bitfield32.
Note that since the generated code works with struct nla_bitfield32,
the generator adds netlink.h to the list of includes for userspace
headers in case any bitfield32 is present.

Note that this is added only to genetlink-legacy scheme as requested
by Jakub Kicinski.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20231021112711.660606-3-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiri Pirko
2023-10-21 13:27:03 +02:00
committed by Jakub Kicinski
parent f862ed2d0b
commit 4e2846fd66
6 changed files with 58 additions and 5 deletions
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13
tools/net/ynl/lib/ynl.py
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@@ -478,6 +478,8 @@ class YnlFamily(SpecFamily):
elif attr['type'] in NlAttr.type_formats:
format = NlAttr.get_format(attr['type'], attr.byte_order)
attr_payload = format.pack(int(value))
elif attr['type'] in "bitfield32":
attr_payload = struct.pack("II", int(value["value"]), int(value["selector"]))
else:
raise Exception(f'Unknown type at {space} {name} {value} {attr["type"]}')
@@ -545,14 +547,19 @@ class YnlFamily(SpecFamily):
decoded = attr.as_auto_scalar(attr_spec['type'], attr_spec.byte_order)
elif attr_spec["type"] in NlAttr.type_formats:
decoded = attr.as_scalar(attr_spec['type'], attr_spec.byte_order)
if 'enum' in attr_spec:
decoded = self._decode_enum(decoded, attr_spec)
elif attr_spec["type"] == 'array-nest':
decoded = self._decode_array_nest(attr, attr_spec)
elif attr_spec["type"] == 'bitfield32':
value, selector = struct.unpack("II", attr.raw)
if 'enum' in attr_spec:
value = self._decode_enum(value, attr_spec)
selector = self._decode_enum(selector, attr_spec)
decoded = {"value": value, "selector": selector}
else:
raise Exception(f'Unknown {attr_spec["type"]} with name {attr_spec["name"]}')
if 'enum' in attr_spec:
decoded = self._decode_enum(decoded, attr_spec)
if not attr_spec.is_multi:
rsp[attr_spec['name']] = decoded
elif attr_spec.name in rsp: