netdev - [PATCH net-next 03/11] tools: ynl: support packing binary arrays of scalars

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250711015303.3688717-4-kuba@kernel.org>
Date: Thu, 10 Jul 2025 18:52:55 -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,
	donald.hunter@...il.com,
	shuah@...nel.org,
	kory.maincent@...tlin.com,
	maxime.chevallier@...tlin.com,
	sdf@...ichev.me,
	ecree.xilinx@...il.com,
	gal@...dia.com,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 03/11] tools: ynl: support packing binary arrays of scalars

We support decoding a binary type with a scalar subtype already,
add support for sending such arrays to the kernel. While at it
also support using "None" to indicate that the binary attribute
should be empty. I couldn't decide whether empty binary should
be [] or None, but there should be no harm in supporting both.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: donald.hunter@...il.com
---
 tools/net/ynl/pyynl/lib/ynl.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/net/ynl/pyynl/lib/ynl.py b/tools/net/ynl/pyynl/lib/ynl.py
index 7529bce174ff..13f1210d0010 100644
--- a/tools/net/ynl/pyynl/lib/ynl.py
+++ b/tools/net/ynl/pyynl/lib/ynl.py
@@ -575,7 +575,9 @@ genl_family_name_to_id = None
         elif attr["type"] == 'string':
             attr_payload = str(value).encode('ascii') + b'\x00'
         elif attr["type"] == 'binary':
-            if isinstance(value, bytes):
+            if value is None:
+                attr_payload = b''
+            elif isinstance(value, bytes):
                 attr_payload = value
             elif isinstance(value, str):
                 if attr.display_hint:
@@ -584,6 +586,9 @@ genl_family_name_to_id = None
                     attr_payload = bytes.fromhex(value)
             elif isinstance(value, dict) and attr.struct_name:
                 attr_payload = self._encode_struct(attr.struct_name, value)
+            elif isinstance(value, list) and attr.sub_type in NlAttr.type_formats:
+                format = NlAttr.get_format(attr.sub_type)
+                attr_payload = b''.join([format.pack(x) for x in value])
             else:
                 raise Exception(f'Unknown type for binary attribute, value: {value}')
         elif attr['type'] in NlAttr.type_formats or attr.is_auto_scalar:
-- 
2.50.1