tools: ynl-gen: use macro for binary min-len check

This patch changes the generated min-len check for binary
attributes to use the NLA_POLICY_MIN_LEN() macro, thereby the
generated code supports strict policy validation.

With this change TypeBinary will always generate a NLA_BINARY
attribute policy.

This doesn't change any currently generated code, as it isn't
used in any specs currently used for generating code.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250902154640.759815-3-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
index ef032e17fec44e6283a0572268f5eedc8d0cf5cf..52f955ed84a7f042a09bd7a4d39fac72ae9a1dd0 100755 (executable)
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -556,7 +556,7 @@ class TypeBinary(Type):
         elif 'exact-len' in self.checks:
             mem = 'NLA_POLICY_EXACT_LEN(' + self.get_limit_str('exact-len') + ')'
         elif 'min-len' in self.checks:
-            mem = '{ .len = ' + self.get_limit_str('min-len') + ', }'
+            mem = 'NLA_POLICY_MIN_LEN(' + self.get_limit_str('min-len') + ')'
         elif 'max-len' in self.checks:
             mem = 'NLA_POLICY_MAX_LEN(' + self.get_limit_str('max-len') + ')'