selftests: net: set the exit code correctly in Python tests

Test cases need to exit with non-zero status if they failed,
we currently don't do that:

  # KTAP version 1
  # 1..3
  # # At /root/ksft-net-drv/drivers/net/./ping.py line 18:
  # # Check failed 1 != 2
  # not ok 1 ping.test_v4
  # ok 2 ping.test_v6
  # ok 3 ping.test_tcp
  # # Totals: pass:2 fail:1 xfail:0 xpass:0 skip:0 error:0
  ok 1 selftests: drivers/net: ping.py
  ^^^^

It's a bit tempting to make the exit part of ksft_run(),
but that only works well for very trivial setups. We can
revisit this later, if people forget to call ksft_exit().

Link: https://lore.kernel.org/r/20240417231146.2435572-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/testing/selftests/net/nl_netdev.py b/tools/testing/selftests/net/nl_netdev.py
index 6909b1760739..93d9d914529b 100755
--- a/tools/testing/selftests/net/nl_netdev.py
+++ b/tools/testing/selftests/net/nl_netdev.py
@@ -2,7 +2,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 import time
-from lib.py import ksft_run, ksft_pr, ksft_eq, ksft_ge, ksft_busy_wait
+from lib.py import ksft_run, ksft_exit, ksft_pr
+from lib.py import ksft_eq, ksft_ge, ksft_busy_wait
 from lib.py import NetdevFamily, NetdevSimDev, ip
 
 
@@ -90,6 +91,7 @@ def main() -> None:
     nf = NetdevFamily()
     ksft_run([empty_check, lo_check, page_pool_check],
              args=(nf, ))
+    ksft_exit()
 
 
 if __name__ == "__main__":