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Message-ID: <20250904220156.1006541-3-ast@fiberby.net>
Date: Thu,  4 Sep 2025 22:01:26 +0000
From: Asbjørn Sloth Tønnesen <ast@...erby.net>
To: "Jason A. Donenfeld" <Jason@...c4.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: Asbjørn Sloth Tønnesen <ast@...erby.net>,
	Donald Hunter <donald.hunter@...il.com>,
	Simon Horman <horms@...nel.org>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	wireguard@...ts.zx2c4.com,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next 03/11] tools: ynl-gen: add sub-type check

Add a check to verify that the sub-type is "nest", and throw an
exception if no policy could be generated, as a guard to prevent
against generating a bad policy.

This is a trivial patch with no behavioural changes intended.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@...erby.net>
---
 tools/net/ynl/pyynl/ynl_gen_c.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
index b7de7f6b1fc7..04c26ed92ca3 100755
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -826,8 +826,10 @@ class TypeArrayNest(Type):
             return f'.type = YNL_PT_U{c_upper(self.sub_type[1:])}, '
         elif self.attr['sub-type'] == 'binary' and 'exact-len' in self.checks:
             return f'.type = YNL_PT_BINARY, .len = {self.checks["exact-len"]}, '
-        else:
+        elif self.attr['sub-type'] == 'nest':
             return f'.type = YNL_PT_NEST, .nest = &{self.nested_render_name}_nest, '
+        else:
+            raise Exception(f"Typol for ArrayNest sub-type {self.attr['sub-type']} not supported, yet")
 
     def _attr_get(self, ri, var):
         local_vars = ['const struct nlattr *attr2;']
-- 
2.51.0


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