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[net-next,2/7] tools: ynl: copy netlink error to NlError

Message ID 20240402010520.1209517-3-kuba@kernel.org
State Accepted
Commit b269d2b4a5232c6130b5df83fb112f4029df4544
Headers show
Series selftests: net: groundwork for YNL-based tests | expand

Commit Message

Jakub Kicinski April 2, 2024, 1:05 a.m. UTC 
Typing e.nl_msg.error when processing exception is a bit tedious
and counter-intuitive. Set a local .error member to the positive
value of the netlink level error.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: donald.hunter@gmail.com
CC: jiri@resnulli.us
---
 tools/net/ynl/lib/ynl.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index 82d3c98067aa..b30210f537f7 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -100,9 +100,10 @@  from .nlspec import SpecFamily
 class NlError(Exception):
   def __init__(self, nl_msg):
     self.nl_msg = nl_msg
+    self.error = -nl_msg.error
 
   def __str__(self):
-    return f"Netlink error: {os.strerror(-self.nl_msg.error)}\n{self.nl_msg}"
+    return f"Netlink error: {os.strerror(self.error)}\n{self.nl_msg}"
 
 
 class ConfigError(Exception):