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Message-ID: <20240219172525.71406-8-jiri@resnulli.us>
Date: Mon, 19 Feb 2024 18:25:23 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org,
pabeni@...hat.com,
davem@...emloft.net,
edumazet@...gle.com,
jacob.e.keller@...el.com,
swarupkotikalapudi@...il.com,
donald.hunter@...il.com,
sdf@...gle.com,
lorenzo@...nel.org,
alessandromarcolini99@...il.com
Subject: [patch net-next 07/13] tools: ynl: add support for list in nested attribute
From: Jiri Pirko <jiri@...dia.com>
Some nested attributes, like devlink-fmg, contain plain list of
attributes that may repeat. Current decode rsp implementation is
dictionary which causes duplicate attributes to be re-written.
To solve this, introduce "nested-list" flag for "nest" type which
indicates the _decode() function to use list instead of dictionary and
store each decoded attribute into this list as a separate dictionary.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
Documentation/netlink/genetlink-legacy.yaml | 3 +++
tools/net/ynl/lib/ynl.py | 18 ++++++++++++++----
2 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/Documentation/netlink/genetlink-legacy.yaml b/Documentation/netlink/genetlink-legacy.yaml
index 77d89f81c71f..0e0ee3b4ff5f 100644
--- a/Documentation/netlink/genetlink-legacy.yaml
+++ b/Documentation/netlink/genetlink-legacy.yaml
@@ -220,6 +220,9 @@ properties:
nested-attributes:
description: Name of the space (sub-space) used inside the attribute.
type: string
+ nested-list:
+ description: The nested attribute contains a list of attributes.
+ type: boolean
enum:
description: Name of the enum type used for the attribute.
type: string
diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index 8591e6bfe40b..08fe27c8dec7 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -386,8 +386,12 @@ class SpaceAttrs:
def lookup(self, name):
for scope in self.scopes:
if name in scope.spec:
- if name in scope.values:
+ if isinstance(scope.values, dict) and name in scope.values:
return scope.values[name]
+ if isinstance(scope.values, list):
+ for item in reversed(scope.values):
+ if name in item:
+ return item[name]
spec_name = scope.spec.yaml['name']
raise Exception(
f"No value for '{name}' in attribute space '{spec_name}'")
@@ -568,6 +572,10 @@ class YnlFamily(SpecFamily):
return attr.as_bin()
def _rsp_add(self, rsp, name, is_multi, decoded):
+ if isinstance(rsp, list):
+ rsp.append({name: decoded})
+ return
+
if is_multi == None:
if name in rsp and type(rsp[name]) is not list:
rsp[name] = [rsp[name]]
@@ -620,8 +628,8 @@ class YnlFamily(SpecFamily):
raise Exception(f"Unknown attribute-set '{attr_space}' when decoding '{attr_spec.name}'")
return decoded
- def _decode(self, attrs, space, outer_attrs = None):
- rsp = dict()
+ def _decode(self, attrs, space, outer_attrs = None, to_list = False):
+ rsp = list() if to_list else dict()
if space:
attr_space = self.attr_sets[space]
search_attrs = SpaceAttrs(attr_space, rsp, outer_attrs)
@@ -637,7 +645,9 @@ class YnlFamily(SpecFamily):
continue
if attr_spec["type"] == 'nest':
- subdict = self._decode(NlAttrs(attr.raw), attr_spec['nested-attributes'], search_attrs)
+ nested_list = attr_spec['nested-list'] if 'nested-list' in attr_spec else False
+ subdict = self._decode(NlAttrs(attr.raw), attr_spec['nested-attributes'],
+ search_attrs, to_list = nested_list)
decoded = subdict
elif attr_spec["type"] == 'string':
decoded = attr.as_strz()
--
2.43.2
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