[PATCH AUTOSEL 6.12 421/486] tools: ynl-gen: don't output external constants

From: Jakub Kicinski <kuba@kernel.org>

[ Upstream commit 7e8b24e24ac46038e48c9a042e7d9b31855cbca5 ]

A definition with a "header" property is an "external" definition
for C code, as in it is defined already in another C header file.
Other languages will need the exact value but C codegen should
not recreate it. So don't output those definitions in the uAPI
header.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20250203215510.1288728-1-kuba@kernel.org (local)
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/net/ynl/ynl-gen-c.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 463f1394ab971..c78f1c1bca75c 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py

@@ -2417,6 +2417,9 @@ def render_uapi(family, cw):
 
     defines = []
     for const in family['definitions']:
+        if const.get('header'):
+            continue
+
         if const['type'] != 'const':
             cw.writes_defines(defines)
             defines = []

-- 
2.39.5