[PATCH] selftests: net: forwarding: cleanup veth peers created via NUM_NETIFS
From: Aleksei Oladko <hidden>
Date: 2026-01-20 23:09:17
Also in:
linux-kselftest, lkml
Subsystem:
kernel selftest framework, networking [general], networking [ipv4/ipv6], the rest · Maintainers:
Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Some net/forwarding kselftests set NUM_NETIFS, causing lib.sh to create the requested number of veth peer interfaces. These interfaces are not removed when the tests finish, leaving stale veth devices in the system. This can cause subsequent tests to fail, for example min_max_mtu.sh. Ensure that veth peers created via NUM_NETIFS are properly removed at the end of the tests to avoid interference between test runs. Signed-off-by: Aleksei Oladko <redacted> --- tools/testing/selftests/net/forwarding/lib.sh | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index a9034f0bb58b..ae7699c0c7e5 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh@@ -597,6 +597,10 @@ vrf_cleanup() ip -6 rule del pref 32765 ip -4 rule add pref 0 table local ip -4 rule del pref 32765 + + for ((i = 1; i <= NUM_NETIFS; i=$i+2)); do + ip link delete dev ${NETIFS[p$i]} 2>/dev/null || true + done } adf_vrf_prepare()
--
2.43.0