@@ -353,6 +353,9 @@ class NetlinkProtocol:
raise Exception(f'Multicast group "{mcast_name}" not present in the spec')
return mcast_groups[mcast_name].value
+ def msghdr_size(self):
+ return 16
+
class GenlProtocol(NetlinkProtocol):
def __init__(self, family_name):
@@ -378,6 +381,8 @@ class GenlProtocol(NetlinkProtocol):
raise Exception(f'Multicast group "{mcast_name}" not present in the family')
return self.genl_family['mcast'][mcast_name]
+ def msghdr_size(self):
+ return super().msghdr_size() + 4
class SpaceAttrs:
@@ -721,7 +726,7 @@ class YnlFamily(SpecFamily):
return
msg = self.nlproto.decode(self, NlMsg(request, 0, op.attr_set))
- offset = 20 + self._struct_size(op.fixed_header)
+ offset = self.nlproto.msghdr_size() + self._struct_size(op.fixed_header)
path = self._decode_extack_path(msg.raw_attrs, op.attr_set, offset,
extack['bad-attr-offs'])
if path:
Extack decoding was using a hard-coded msg header size of 20 but netlink-raw has a header size of 16. Use a protocol specific msghdr_size() when decoding the attr offssets. Signed-off-by: Donald Hunter <donald.hunter@gmail.com> --- tools/net/ynl/lib/ynl.py | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)