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tools: ynl: encode indexed-arrays

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This patch adds support for encoding indexed-array
attributes with sub-type nest in pyynl.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250915144301.725949-10-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Asbjørn Sloth Tønnesen 2025-09-15 14:42:54 +00:00 committed by Jakub Kicinski
parent 328c134262
commit 5c51ae2446
1 changed files with 16 additions and 0 deletions
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16
tools/net/ynl/pyynl/lib/ynl.py
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@ -563,6 +563,11 @@ class YnlFamily(SpecFamily):
nl_type |= Netlink.NLA_F_NESTED
sub_space = attr['nested-attributes']
attr_payload = self._add_nest_attrs(value, sub_space, search_attrs)
elif attr['type'] == 'indexed-array' and attr['sub-type'] == 'nest':
nl_type |= Netlink.NLA_F_NESTED
sub_space = attr['nested-attributes']
attr_payload = self._encode_indexed_array(value, sub_space,
search_attrs)
elif attr["type"] == 'flag':
if not value:
# If value is absent or false then skip attribute creation.
@ -616,6 +621,9 @@ class YnlFamily(SpecFamily):
else:
raise Exception(f'Unknown type at {space} {name} {value} {attr["type"]}')
return self._add_attr_raw(nl_type, attr_payload)
def _add_attr_raw(self, nl_type, attr_payload):
pad = b'\x00' * ((4 - len(attr_payload) % 4) % 4)
return struct.pack('HH', len(attr_payload) + 4, nl_type) + attr_payload + pad
@ -627,6 +635,14 @@ class YnlFamily(SpecFamily):
sub_attrs)
return attr_payload
def _encode_indexed_array(self, vals, sub_space, search_attrs):
attr_payload = b''
for i, val in enumerate(vals):
idx = i | Netlink.NLA_F_NESTED
val_payload = self._add_nest_attrs(val, sub_space, search_attrs)
attr_payload += self._add_attr_raw(idx, val_payload)
return attr_payload
def _get_enum_or_unknown(self, enum, raw):
try:
name = enum.entries_by_val[raw].name