tools: ynl-gen: allow overriding name-prefix for constants

Allow using custom name-prefix with constants,
just like it is for enum and flags declarations.

This is needed for generating WG_KEY_LEN in
include/uapi/linux/wireguard.h from a spec.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250915144301.725949-2-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 0bb6530f64b856411407b812b84006405aa473d5..498cfeee443e51925fdcd65b1a155bf4a4f10582 100755 (executable)
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -3208,8 +3208,9 @@ def render_uapi(family, cw):
             cw.block_end(line=';')
             cw.nl()
         elif const['type'] == 'const':
+            name_pfx = const.get('name-prefix', f"{family.ident_name}-")
             defines.append([c_upper(family.get('c-define-name',
-                                               f"{family.ident_name}-{const['name']}")),
+                                               f"{name_pfx}{const['name']}")),
                             const['value']])
 
     if defines: