[PATCH 6.12 039/160] tools/net/ynl: fix sub-message key lookup for nested attributes

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6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Donald Hunter <donald.hunter@xxxxxxxxx>

[ Upstream commit 663ad7481f068057f6f692c5368c47150e855370 ]

Use the correct attribute space for sub-message key lookup in nested
attributes when adding attributes. This fixes rt_link where the "kind"
key and "data" sub-message are nested attributes in "linkinfo".

For example:

./tools/net/ynl/cli.py \
    --create \
    --spec Documentation/netlink/specs/rt_link.yaml \
    --do newlink \
    --json '{"link": 99,
             "linkinfo": { "kind": "vlan", "data": {"id": 4 } }
             }'

Signed-off-by: Donald Hunter <donald.hunter@xxxxxxxxx>
Fixes: ab463c4342d1 ("tools/net/ynl: Add support for encoding sub-messages")
Link: https://patch.msgid.link/20241213130711.40267-1-donald.hunter@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 tools/net/ynl/lib/ynl.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index c22c22bf2cb7..a3f741fed0a3 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -553,10 +553,10 @@ class YnlFamily(SpecFamily):
         if attr["type"] == 'nest':
             nl_type |= Netlink.NLA_F_NESTED
             attr_payload = b''
-            sub_attrs = SpaceAttrs(self.attr_sets[space], value, search_attrs)
+            sub_space = attr['nested-attributes']
+            sub_attrs = SpaceAttrs(self.attr_sets[sub_space], value, search_attrs)
             for subname, subvalue in value.items():
-                attr_payload += self._add_attr(attr['nested-attributes'],
-                                               subname, subvalue, sub_attrs)
+                attr_payload += self._add_attr(sub_space, subname, subvalue, sub_attrs)
         elif attr["type"] == 'flag':
             if not value:
                 # If value is absent or false then skip attribute creation.
-- 
2.39.5







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