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* [PATCH net] tools: ynl: don't ignore errors in NLMSG_DONE messages
@ 2024-04-20  2:08 Jakub Kicinski
  2024-04-22 12:08 ` Donald Hunter
  2024-04-23 13:50 ` patchwork-bot+netdevbpf
  0 siblings, 2 replies; 3+ messages in thread
From: Jakub Kicinski @ 2024-04-20  2:08 UTC (permalink / raw)
  To: davem; +Cc: netdev, edumazet, pabeni, Jakub Kicinski, donald.hunter, jiri,
	sdf

NLMSG_DONE contains an error code, it has to be extracted.
Prior to this change all dumps will end in success,
and in case of failure the result is silently truncated.

Fixes: e4b48ed460d3 ("tools: ynl: add a completely generic client")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: donald.hunter@gmail.com
CC: jiri@resnulli.us
CC: sdf@google.com
---
 tools/net/ynl/lib/ynl.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index a67f7b6fef92..a9e4d588baf6 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -203,6 +203,7 @@ from .nlspec import SpecFamily
             self.done = 1
             extack_off = 20
         elif self.nl_type == Netlink.NLMSG_DONE:
+            self.error = struct.unpack("i", self.raw[0:4])[0]
             self.done = 1
             extack_off = 4
 
-- 
2.44.0


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2024-04-20  2:08 [PATCH net] tools: ynl: don't ignore errors in NLMSG_DONE messages Jakub Kicinski
2024-04-22 12:08 ` Donald Hunter
2024-04-23 13:50 ` patchwork-bot+netdevbpf

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