[PATCH net-next v3] selftests/net: Skip srv6_end_dt46_l3vpn_test if iproute2 too old

[PATCH net-next v3] selftests/net: Skip srv6_end_dt46_l3vpn_test if iproute2 too old

[Alessio Faina]

In case iproute2 is older than version 5.14.0, released ~Sept 1, 2021,
the End.DT46 support is not available and the host_vpn_tests test contained
in the srv6_end_dt46_l3vpn_test.sh file is failing in some kernel backports.
This is the result of those tests:

################################################################################
TEST SECTION: SRv6 VPN connectivity test among hosts in the same tenant
################################################################################

    TEST: IPv6 Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100)  [ FAIL ]

    TEST: IPv4 Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100)  [ FAIL ]

    TEST: IPv6 Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100)  [ FAIL ]

    TEST: IPv4 Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100)  [ FAIL ]

    TEST: IPv6 Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200)  [ FAIL ]

    TEST: IPv4 Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200)  [ FAIL ]

    TEST: IPv6 Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200)  [ FAIL ]

    TEST: IPv4 Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200)  [ FAIL ]

To amend this, check the current running iproute2 supports the required
feature and, if not, just skip the entire test to avoid a failure.


Signed-off-by: Alessio Faina <alessio.faina@canonical.com>
---
v3:
 -  fix indentation in test_iproute2_supp_or_ksft_skip()
 -  fix subject to reflect full test suite skip
 -  https://lore.kernel.org/netdev/20260713095750.2671173-1-alessio.faina@canonical.com/
v2: 
	- skip entire test suite if iproute2 is too old
v1: https://lore.kernel.org/netdev/20260708152745.2430714-1-alessio.faina@canonical.com/

 .../testing/selftests/net/srv6_end_dt46_l3vpn_test.sh  | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh
index a5e959a080bb..50e37d3217ea 100755
--- a/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh
+++ b/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh
@@ -536,6 +536,14 @@ host_vpn_isolation_tests()
 	done
 }
 
+test_iproute2_supp_or_ksft_skip()
+{
+	if ! ip route add help 2>&1 | grep -qo "End.DT46"; then
+		echo "SKIP: Missing SRv6 End.DT46 support in iproute2"
+		exit "${ksft_skip}"
+	fi
+}
+
 if [ "$(id -u)" -ne 0 ];then
 	echo "SKIP: Need root privileges"
 	exit $ksft_skip
@@ -546,6 +554,8 @@ if [ ! -x "$(command -v ip)" ]; then
 	exit $ksft_skip
 fi
 
+test_iproute2_supp_or_ksft_skip
+
 modprobe vrf &>/dev/null
 if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
         echo "SKIP: vrf sysctl does not exist"
-- 
2.43.0

Re: [PATCH net-next v3] selftests/net: Skip srv6_end_dt46_l3vpn_test if iproute2 too old

[Andrea Mayer]

On Wed, 15 Jul 2026 14:28:59 +0200
Alessio Faina <alessio.faina@canonical.com> wrote:

> In case iproute2 is older than version 5.14.0, released ~Sept 1, 2021,
> the End.DT46 support is not available and the host_vpn_tests test contained
> in the srv6_end_dt46_l3vpn_test.sh file is failing in some kernel backports.
> This is the result of those tests:
>
> ################################################################################
> TEST SECTION: SRv6 VPN connectivity test among hosts in the same tenant
> ################################################################################
>
>     TEST: IPv6 Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100)  [ FAIL ]
>
>     TEST: IPv4 Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100)  [ FAIL ]
>
>     TEST: IPv6 Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100)  [ FAIL ]
>
>     TEST: IPv4 Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100)  [ FAIL ]
>
>     TEST: IPv6 Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200)  [ FAIL ]
>
>     TEST: IPv4 Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200)  [ FAIL ]
>
>     TEST: IPv6 Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200)  [ FAIL ]
>
>     TEST: IPv4 Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200)  [ FAIL ]
>
> To amend this, check the current running iproute2 supports the required
> feature and, if not, just skip the entire test to avoid a failure.
>
> Signed-off-by: Alessio Faina <alessio.faina@canonical.com>
> ---
> v3:
>  -  fix indentation in test_iproute2_supp_or_ksft_skip()
>  -  fix subject to reflect full test suite skip
>  -  https://lore.kernel.org/netdev/20260713095750.2671173-1-alessio.faina@canonical.com/
> v2:
>     - skip entire test suite if iproute2 is too old
> v1: https://lore.kernel.org/netdev/20260708152745.2430714-1-alessio.faina@canonical.com/
>
>  .../testing/selftests/net/srv6_end_dt46_l3vpn_test.sh  | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Hi Alessio,

Thanks for the v3, both points are addressed.

About the check flagged by Sashiko: "ip route add help" is fine.
iproute2 catches the "help" word and prints the usage before it parses it as a
prefix, so the grep works.
As a small nit, the other srv6 selftests use "ip route help" without "add".
This is not blocking, and I don't think it is worth spinning a v4 just to
remove the "add".

Reviewed-by: Andrea Mayer <andrea.mayer@uniroma2.it>

Ciao
Andrea

Re: [PATCH net-next v3] selftests/net: Skip srv6_end_dt46_l3vpn_test if iproute2 too old

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Wed, 15 Jul 2026 14:28:59 +0200 you wrote:
> In case iproute2 is older than version 5.14.0, released ~Sept 1, 2021,
> the End.DT46 support is not available and the host_vpn_tests test contained
> in the srv6_end_dt46_l3vpn_test.sh file is failing in some kernel backports.
> This is the result of those tests:
> 
> ################################################################################
> TEST SECTION: SRv6 VPN connectivity test among hosts in the same tenant
> ################################################################################
> 
> [...]

Here is the summary with links:
  - [net-next,v3] selftests/net: Skip srv6_end_dt46_l3vpn_test if iproute2 too old
    https://git.kernel.org/netdev/net-next/c/6217246bc5bf

You are awesome, thank you!
-- 
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