[PATCH] [net-next, v2] selftest/net: skip srv6_end_dt[4/6]_l3vpn_test.sh if vrftable not available
From: Alessio Faina <hidden>
Date: 2026-09-03 10:35:57
Also in:
linux-kselftest, lkml
Subsystem:
kernel selftest framework, networking [general], networking [srv6], the rest · Maintainers:
Shuah Khan, Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrea Mayer, Linus Torvalds
In case iproute2 is older than version 5.11.0, released ~Feb 23, 2021,
the vrftable support is not available and the tests
contained in the following 4 test files
- srv6_end_dt4_l3vpn_test.sh
- srv6_end_dt6_l3vpn_test.sh
are failing in some kernel backports.
This is the result of one those tests in an unsupported environment:
\################################################################################
\TEST SECTION: SRv6 VPN connectivity test among hosts in the same tenant
\################################################################################
\
\ TEST: Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100) [FAIL]
\
\ TEST: Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100) [FAIL]
\
\ TEST: Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200) [FAIL]
\
\ TEST: Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200) [FAIL]
\
To amend this, check the current running iproute2 supports the vrftable
feature and, if not, just skip the entire test to avoid a failure.
v2: - remove dx[4/6] tests
- test if vrftable is available in the installed iproute2 application
v1: https://patchwork.kernel.org/project/netdevbpf/patch/20260824091537.2305107-1-alessio.faina@canonical.com/
- initial approach by testing DT[4/6] and DX[4/6]
- test if DT4/DT6 are available in iproute2
Signed-off-by: Alessio Faina <redacted>
---
./tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh | 21 +++++++++++++++++++
./tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh | 21 +++++++++++++++++++
2 files changed, 42 insertions(+)
diff --git a/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
index a649dba3cb77..037e5fe1da2a 100755
--- a/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
+++ b/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh@@ -469,12 +469,33 @@ if [ ! -x "$(command -v ip)" ]; then exit $ksft_skip fi +test_vrftable_supp_or_ksft_skip() +{ + local nsname + + setup_ns nsname + ip netns exec "${nsname}" sh -c "echo 1 > /proc/sys/net/vrf/strict_mode" + ip -netns "${nsname}" link add vrf-100 type vrf table 100 + ip -netns "${nsname}" link set vrf-100 up + + if ! ip -netns "${nsname}" -6 route add fc00::1/128 \ + encap seg6local action End.DT4 vrftable 100 dev vrf-100 2>/dev/null; then + cleanup_ns "${nsname}" + echo "SKIP: SRv6 End.DT4 vrftable not supported" + exit "${ksft_skip}" + fi + + cleanup_ns "${nsname}" +} + modprobe vrf &>/dev/null if [ ! -e /proc/sys/net/vrf/strict_mode ]; then echo "SKIP: vrf sysctl does not exist" exit $ksft_skip fi +test_vrftable_supp_or_ksft_skip + cleanup &>/dev/null setup
diff --git a/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
index e408406d8489..9a29e0d6c912 100755
--- a/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
+++ b/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh@@ -479,12 +479,33 @@ if [ ! -x "$(command -v ip)" ]; then exit $ksft_skip fi +test_vrftable_supp_or_ksft_skip() +{ + local nsname + + setup_ns nsname + ip netns exec "${nsname}" sh -c "echo 1 > /proc/sys/net/vrf/strict_mode" + ip -netns "${nsname}" link add vrf-100 type vrf table 100 + ip -netns "${nsname}" link set vrf-100 up + + if ! ip -netns "${nsname}" -6 route add fc00::1/128 \ + encap seg6local action End.DT6 vrftable 100 dev vrf-100 2>/dev/null; then + cleanup_ns "${nsname}" + echo "SKIP: SRv6 End.DT6 vrftable not supported" + exit "${ksft_skip}" + fi + + cleanup_ns "${nsname}" +} + modprobe vrf &>/dev/null if [ ! -e /proc/sys/net/vrf/strict_mode ]; then echo "SKIP: vrf sysctl does not exist" exit $ksft_skip fi +test_vrftable_supp_or_ksft_skip + cleanup &>/dev/null setup
--
2.43.0