netdev - [PATCH net-next] tools: ynl-gen: support uint in multi-attr

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Message-ID: <20250916170431.1526726-1-kuba@kernel.org>
Date: Tue, 16 Sep 2025 10:04:31 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	Jakub Kicinski <kuba@...nel.org>,
	donald.hunter@...il.com,
	jacob.e.keller@...el.com
Subject: [PATCH net-next] tools: ynl-gen: support uint in multi-attr

The ethtool FEC histogram series run into a build issue with
type: uint + multi-attr: True. Auto scalars use 64b types,
we need to convert them explicitly when rendering the types.

No current spec needs this, and the ethtool FEC histogram
doesn't need this either any more, so not posting as a fix.

Link: https://lore.kernel.org/8f52c5b8-bd8a-44b8-812c-4f30d50f63ff@redhat.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: donald.hunter@...il.com
CC: jacob.e.keller@...el.com
---
 tools/net/ynl/pyynl/ynl_gen_c.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
index 56c63022d702..58086b101057 100755
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -720,7 +720,11 @@ from lib import SpecSubMessage
             return 'struct ynl_string *'
         elif self.attr['type'] in scalars:
             scalar_pfx = '__' if ri.ku_space == 'user' else ''
-            return scalar_pfx + self.attr['type']
+            if self.is_auto_scalar:
+                name = self.type[0] + '64'
+            else:
+                name = self.attr['type']
+            return scalar_pfx + name
         else:
             raise Exception(f"Sub-type {self.attr['type']} not supported yet")
 
-- 
2.51.0