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tools/net/ynl: Report netlink errors without stacktrace

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ynl does not handle NlError exceptions so they get reported like program
failures. Handle the NlError exceptions and report the netlink errors
more cleanly.

Example now:

Netlink error: No such file or directory
nl_len = 44 (28) nl_flags = 0x300 nl_type = 2
	error: -2	extack: {'bad-attr': '.op'}

Example before:

Traceback (most recent call last):
  File "/home/donaldh/net-next/./tools/net/ynl/cli.py", line 81, in <module>
    main()
  File "/home/donaldh/net-next/./tools/net/ynl/cli.py", line 69, in main
    reply = ynl.dump(args.dump, attrs)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/donaldh/net-next/tools/net/ynl/lib/ynl.py", line 906, in dump
    return self._op(method, vals, [], dump=True)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/donaldh/net-next/tools/net/ynl/lib/ynl.py", line 872, in _op
    raise NlError(nl_msg)
lib.ynl.NlError: Netlink error: No such file or directory
nl_len = 44 (28) nl_flags = 0x300 nl_type = 2
	error: -2	extack: {'bad-attr': '.op'}

Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://lore.kernel.org/r/20240306231046.97158-3-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Donald Hunter 2024-03-06 23:10:42 +00:00 committed by Jakub Kicinski
parent cecbc52c46
commit 771b7012e5
2 changed files with 13 additions and 9 deletions
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18
tools/net/ynl/cli.py
View file

@ -6,7 +6,7 @@ import json
import pprint
import time
from lib import YnlFamily, Netlink
from lib import YnlFamily, Netlink, NlError
class YnlEncoder(json.JSONEncoder):
@ -66,12 +66,16 @@ def main():
if args.sleep:
time.sleep(args.sleep)
if args.do:
reply = ynl.do(args.do, attrs, args.flags)
output(reply)
if args.dump:
reply = ynl.dump(args.dump, attrs)
output(reply)
try:
if args.do:
reply = ynl.do(args.do, attrs, args.flags)
output(reply)
if args.dump:
reply = ynl.dump(args.dump, attrs)
output(reply)
except NlError as e:
print(e)
exit(1)
if args.ntf:
ynl.check_ntf()

4
tools/net/ynl/lib/__init__.py
View file

@ -2,7 +2,7 @@
from .nlspec import SpecAttr, SpecAttrSet, SpecEnumEntry, SpecEnumSet, \
SpecFamily, SpecOperation
from .ynl import YnlFamily, Netlink
from .ynl import YnlFamily, Netlink, NlError
__all__ = ["SpecAttr", "SpecAttrSet", "SpecEnumEntry", "SpecEnumSet",
"SpecFamily", "SpecOperation", "YnlFamily", "Netlink"]
"SpecFamily", "SpecOperation", "YnlFamily", "Netlink", "NlError"]