6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>
[ Upstream commit 6fda63c45fe8a0870226c13dcce1cc21b7c4d508 ]
Execution of command:
./tools/net/ynl/cli.py --spec Documentation/netlink/specs/dpll.yaml /
--subscribe "monitor" --sleep 10
fails with:
File "/repo/./tools/net/ynl/cli.py", line 109, in main
ynl.check_ntf()
File "/repo/tools/net/ynl/lib/ynl.py", line 924, in check_ntf
op = self.rsp_by_value[nl_msg.cmd()]
KeyError: 19
Parsing Generic Netlink notification messages performs lookup for op in
the message. The message was not yet decoded, and is not yet considered
GenlMsg, thus msg.cmd() returns Generic Netlink family id (19) instead of
proper notification command id (i.e.: DPLL_CMD_PIN_CHANGE_NTF=13).
Allow the op to be obtained within NetlinkProtocol.decode(..) itself if the
op was not passed to the decode function, thus allow parsing of Generic
Netlink notifications without causing the failure.
Suggested-by: Donald Hunter <donald.hunter@xxxxxxxxx>
Link: https://lore.kernel.org/netdev/m2le0n5xpn.fsf@xxxxxxxxx/
Fixes: 0a966d606c68 ("tools/net/ynl: Fix extack decoding for directional ops")
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>
Reviewed-by: Donald Hunter <donald.hunter@xxxxxxxxx>
Link: https://patch.msgid.link/20240904135034.316033-1-arkadiusz.kubalewski@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/net/ynl/lib/ynl.py | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index 35e666928119..ed7b6fff6999 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -388,6 +388,8 @@ class NetlinkProtocol:
def decode(self, ynl, nl_msg, op):
msg = self._decode(nl_msg)
+ if op is None:
+ op = ynl.rsp_by_value[msg.cmd()]
fixed_header_size = ynl._struct_size(op.fixed_header)
msg.raw_attrs = NlAttrs(msg.raw, fixed_header_size)
return msg
@@ -919,8 +921,7 @@ class YnlFamily(SpecFamily):
print("Netlink done while checking for ntf!?")
continue
- op = self.rsp_by_value[nl_msg.cmd()]
- decoded = self.nlproto.decode(self, nl_msg, op)
+ decoded = self.nlproto.decode(self, nl_msg, None)
if decoded.cmd() not in self.async_msg_ids:
print("Unexpected msg id done while checking for ntf", decoded)
continue
@@ -978,7 +979,7 @@ class YnlFamily(SpecFamily):
if nl_msg.extack:
self._decode_extack(req_msg, op, nl_msg.extack)
else:
- op = self.rsp_by_value[nl_msg.cmd()]
+ op = None
req_flags = []
if nl_msg.error:
--
2.43.0
