linux/tools/testing
Ido Schimmel f97f1fcc96 selftests: forwarding: Fix bridge locked port test flakiness
The redirection test case fails in the netdev CI on debug kernels
because an FDB entry is learned despite the presence of a tc filter that
redirects incoming traffic [1].

I am unable to reproduce the failure locally, but I can see how it can
happen given that learning is first enabled and only then the ingress tc
filter is configured. On debug kernels the time window between these two
operations is longer compared to regular kernels, allowing random
packets to be transmitted and trigger learning.

Fix by reversing the order and configure the ingress tc filter before
enabling learning.

[1]
[...]
 # TEST: Locked port MAB redirect                                      [FAIL]
 # Locked entry created for redirected traffic

Fixes: 38c43a1ce7 ("selftests: forwarding: Add test case for traffic redirection from a locked port")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/20240208155529.1199729-5-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-02-09 11:32:14 -08:00
..
crypto/chacha20-s390
cxl tools/testing/cxl: Disable "missing prototypes / declarations" warnings 2024-01-22 10:41:59 -08:00
fault-injection
ktest
kunit kunit: tool: add test for parsing attributes 2023-12-18 13:21:15 -07:00
memblock mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
nvdimm tools/testing/nvdimm: Disable "missing prototypes / declarations" warnings 2024-01-22 10:41:59 -08:00
radix-tree maple_tree: fix warning comparing pointer to 0 2023-12-20 14:48:12 -08:00
scatterlist
selftests selftests: forwarding: Fix bridge locked port test flakiness 2024-02-09 11:32:14 -08:00
vsock vsock/test: two tests to check credit update logic 2023-12-15 10:37:35 +00:00