diff options
| -rw-r--r-- | Documentation/userspace-api/netlink/specs.rst | 7 | ||||
| -rw-r--r-- | tools/net/ynl/lib/nlspec.py | 6 | ||||
| -rwxr-xr-x | tools/net/ynl/ynl-gen-c.py | 7 |
3 files changed, 14 insertions, 6 deletions
diff --git a/Documentation/userspace-api/netlink/specs.rst b/Documentation/userspace-api/netlink/specs.rst index 1424ab1b9b33..32e53328d113 100644 --- a/Documentation/userspace-api/netlink/specs.rst +++ b/Documentation/userspace-api/netlink/specs.rst @@ -197,7 +197,12 @@ value Numerical attribute ID, used in serialized Netlink messages. 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. +and ``1`` for the first attribute in the attribute set. + +Attributes (and operations) use ``1`` as the default value for the first +entry (unlike enums in definitions which start from ``0``) because +entry ``0`` is almost always reserved as undefined. Spec can explicitly +set value to ``0`` if needed. Note that the ``value`` of an attribute is defined only in its main set (not in subsets). diff --git a/tools/net/ynl/lib/nlspec.py b/tools/net/ynl/lib/nlspec.py index dff31dad36c5..9d394e50de23 100644 --- a/tools/net/ynl/lib/nlspec.py +++ b/tools/net/ynl/lib/nlspec.py @@ -96,7 +96,7 @@ class SpecAttrSet(SpecElement): self.attrs_by_val = collections.OrderedDict() if self.subset_of is None: - val = 0 + val = 1 for elem in self.yaml['attributes']: if 'value' in elem: val = elem['value'] @@ -252,7 +252,7 @@ class SpecFamily(SpecElement): self._resolution_list.append(elem) def _dictify_ops_unified(self): - val = 0 + val = 1 for elem in self.yaml['operations']['list']: if 'value' in elem: val = elem['value'] @@ -263,7 +263,7 @@ class SpecFamily(SpecElement): self.msgs[op.name] = op def _dictify_ops_directional(self): - req_val = rsp_val = 0 + req_val = rsp_val = 1 for elem in self.yaml['operations']['list']: if 'notify' in elem: if 'value' in elem: diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index 274e9c566f61..62f8f2c3c56c 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -2044,14 +2044,17 @@ def render_uapi(family, cw): max_value = f"({cnt_name} - 1)" uapi_enum_start(family, cw, family['operations'], 'enum-name') + val = 0 for op in family.msgs.values(): if separate_ntf and ('notify' in op or 'event' in op): continue suffix = ',' - if 'value' in op: - suffix = f" = {op['value']}," + if op.value != val: + suffix = f" = {op.value}," + val = op.value cw.p(op.enum_name + suffix) + val += 1 cw.nl() cw.p(cnt_name + ('' if max_by_define else ',')) if not max_by_define: |