[PATCH net-next 3/4] selftests: drv-net: improve the use of ksft helpers in XSK queue test

[Jakub Kicinski <kuba@kernel.org>]

Avoid exceptions when xsk attr is not present, and add a proper ksft
helper for "not in" condition.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 tools/testing/selftests/drivers/net/queues.py | 9 +++++----
 tools/testing/selftests/net/lib/py/ksft.py    | 5 +++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/queues.py b/tools/testing/selftests/drivers/net/queues.py
index 91e344d108ee..3cbcbaf5eaeb 100755
--- a/tools/testing/selftests/drivers/net/queues.py
+++ b/tools/testing/selftests/drivers/net/queues.py
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
 from lib.py import ksft_disruptive, ksft_exit, ksft_run
-from lib.py import ksft_eq, ksft_raises, KsftSkipEx, KsftFailEx
+from lib.py import ksft_eq, ksft_not_in, ksft_raises, KsftSkipEx, KsftFailEx
 from lib.py import EthtoolFamily, NetdevFamily, NlError
 from lib.py import NetDrvEnv
 from lib.py import bkg, cmd, defer, ip
@@ -40,10 +40,11 @@ import struct
                 if q['type'] == 'tx':
                     tx = True
 
-                ksft_eq(q['xsk'], {})
+                ksft_eq(q.get('xsk', None), {},
+                        comment="xsk attr on queue we configured")
             else:
-                if 'xsk' in q:
-                    _fail("Check failed: xsk attribute set.")
+                ksft_not_in('xsk', q,
+                            comment="xsk attr on queue we didn't configure")
 
         ksft_eq(rx, True)
         ksft_eq(tx, True)
diff --git a/tools/testing/selftests/net/lib/py/ksft.py b/tools/testing/selftests/net/lib/py/ksft.py
index 3efe005436cd..fd23349fa8ca 100644
--- a/tools/testing/selftests/net/lib/py/ksft.py
+++ b/tools/testing/selftests/net/lib/py/ksft.py
@@ -71,6 +71,11 @@ KSFT_DISRUPTIVE = True
         _fail("Check failed", a, "not in", b, comment)
 
 
+def ksft_not_in(a, b, comment=""):
+    if a in b:
+        _fail("Check failed", a, "in", b, comment)
+
+
 def ksft_is(a, b, comment=""):
     if a is not b:
         _fail("Check failed", a, "is not", b, comment)
-- 
2.48.1