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tools: ynl: fully inherit attrs in subsets

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To avoid having to repeat the entire definition of an attribute
(including the value) use the Attr object from the original set.
In fact this is already the documented expectation.

Fixes: be5bea1cc0 ("net: add basic C code generators for Netlink")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2023-03-01 10:36:40 -08:00 committed by David S. Miller
parent ad93bab6b8
commit 7cf93538e0
2 changed files with 17 additions and 9 deletions
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3
Documentation/userspace-api/netlink/specs.rst
View File

@ -199,7 +199,8 @@ The ``value`` property can be skipped, in which case the attribute ID
will be the value of the previous attribute plus one (recursively)
and ``0`` for the first attribute in the attribute set.
Note that the ``value`` of an attribute is defined only in its main set.
Note that the ``value`` of an attribute is defined only in its main set
(not in subsets).
enum
~~~~

23
tools/net/ynl/lib/nlspec.py
View File

@ -95,15 +95,22 @@ class SpecAttrSet(SpecElement):
self.attrs = collections.OrderedDict()
self.attrs_by_val = collections.OrderedDict()
val = 0
for elem in self.yaml['attributes']:
if 'value' in elem:
val = elem['value']
if self.subset_of is None:
val = 0
for elem in self.yaml['attributes']:
if 'value' in elem:
val = elem['value']
attr = self.new_attr(elem, val)
self.attrs[attr.name] = attr
self.attrs_by_val[attr.value] = attr
val += 1
attr = self.new_attr(elem, val)
self.attrs[attr.name] = attr
self.attrs_by_val[attr.value] = attr
val += 1
else:
real_set = family.attr_sets[self.subset_of]
for elem in self.yaml['attributes']:
attr = real_set[elem['name']]
self.attrs[attr.name] = attr
self.attrs_by_val[attr.value] = attr
def new_attr(self, elem, value):
return SpecAttr(self.family, self, elem, value)