Re: [PATCH net] selftest/net: skip srv6_end_d[t/x][4/6]_*_test.sh if iproute2 too old

[Hangbin Liu <hangbin.liu@linux.dev>]

On Mon, Aug 24, 2026 at 11:15:37AM +0200, Alessio Faina wrote:
> In case iproute2 is older than version 5.14.0, released ~Sept 1, 2021,
> the End.DT4/DT6/DX4/DX6 support are not available and the tests
> contained in the following 4 test files
>  - srv6_end_dt4_l3vpn_test.sh
>  - srv6_end_dt6_l3vpn_test.sh
>  - srv6_end_dx4_netfilter_test.sh
>  - srv6_end_dx6_netfilter_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 required
> feature and, if not, just skip the entire test to avoid a failure.
> 
> This is similar to what have been done for srv6_end_dt46_l3vpn_test.sh in
> https://patchwork.kernel.org/project/netdevbpf/patch/20260715122859.36177-1-alessio.faina@canonical.com/
> 
> Signed-off-by: Alessio Faina <alessio.faina@canonical.com>
> ---
>  tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh      | 10 ++++++++++
>  tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh      | 10 ++++++++++
>  tools/testing/selftests/net/srv6_end_dx4_netfilter_test.sh  | 10 ++++++++++
>  tools/testing/selftests/net/srv6_end_dx6_netfilter_test.sh  | 10 ++++++++++
>  4 files changed, 40 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..50e8c733cf9f 100755
> --- a/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
> +++ b/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
> @@ -459,6 +459,14 @@ host_vpn_isolation_tests()
>  	done
>  }
>  
> +test_iproute2_supp_or_ksft_skip()
> +{
> +	if ! ip route help 2>&1 | grep -qo "End.DT4"; then
> +		echo "SKIP: Missing SRv6 End.DT4 support in iproute2"
> +		exit "${ksft_skip}"
> +	fi
> +}
> +
>  if [ "$(id -u)" -ne 0 ];then
>  	echo "SKIP: Need root privileges"
>  	exit $ksft_skip
> @@ -469,6 +477,8 @@ if [ ! -x "$(command -v ip)" ]; then
>  	exit $ksft_skip
>  fi
>  
> +test_iproute2_supp_or_ksft_skip
> +
>  modprobe vrf &>/dev/null
>  if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
>          echo "SKIP: vrf sysctl does not exist"
> diff --git a/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
> index e408406d8489..9ed985559c6b 100755
> --- a/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
> +++ b/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
> @@ -469,6 +469,14 @@ host_vpn_isolation_tests()
>  	done
>  }
>  
> +test_iproute2_supp_or_ksft_skip()
> +{
> +	if ! ip route help 2>&1 | grep -qo "End.DT6"; then
> +		echo "SKIP: Missing SRv6 End.DT6 support in iproute2"
> +		exit "${ksft_skip}"
> +	fi
> +}
> +
>  if [ "$(id -u)" -ne 0 ];then
>  	echo "SKIP: Need root privileges"
>  	exit $ksft_skip
> @@ -479,6 +487,8 @@ if [ ! -x "$(command -v ip)" ]; then
>  	exit $ksft_skip
>  fi
>  
> +test_iproute2_supp_or_ksft_skip
> +
>  modprobe vrf &>/dev/null
>  if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
>          echo "SKIP: vrf sysctl does not exist"
> diff --git a/tools/testing/selftests/net/srv6_end_dx4_netfilter_test.sh b/tools/testing/selftests/net/srv6_end_dx4_netfilter_test.sh
> index e23210aa547f..b0bc85db8353 100755
> --- a/tools/testing/selftests/net/srv6_end_dx4_netfilter_test.sh
> +++ b/tools/testing/selftests/net/srv6_end_dx4_netfilter_test.sh
> @@ -311,6 +311,14 @@ router_netfilter_tests()
>  	check_and_log_hs_connectivity 2 1 100
>  }
>  
> +test_iproute2_supp_or_ksft_skip()
> +{
> +	if ! ip route help 2>&1 | grep -qo "End.DX4"; then
> +		echo "SKIP: Missing SRv6 End.DX4 support in iproute2"
> +		exit "${ksft_skip}"
> +	fi
> +}
> +
>  if [ "$(id -u)" -ne 0 ];then
>  	echo "SKIP: Need root privileges"
>  	exit $ksft_skip
> @@ -321,6 +329,8 @@ if [ ! -x "$(command -v ip)" ]; then
>  	exit $ksft_skip
>  fi
>  
> +test_iproute2_supp_or_ksft_skip
> +
>  cleanup &>/dev/null
>  
>  setup
> diff --git a/tools/testing/selftests/net/srv6_end_dx6_netfilter_test.sh b/tools/testing/selftests/net/srv6_end_dx6_netfilter_test.sh
> index 9e69a2ed5bc3..9bfbc5bbbdeb 100755
> --- a/tools/testing/selftests/net/srv6_end_dx6_netfilter_test.sh
> +++ b/tools/testing/selftests/net/srv6_end_dx6_netfilter_test.sh
> @@ -316,6 +316,14 @@ router_netfilter_tests()
>  	check_and_log_hs_connectivity 2 1 100
>  }
>  
> +test_iproute2_supp_or_ksft_skip()
> +{
> +	if ! ip route help 2>&1 | grep -qo "End.DX6"; then
> +		echo "SKIP: Missing SRv6 End.DX6 support in iproute2"
> +		exit "${ksft_skip}"
> +	fi
> +}
> +
>  if [ "$(id -u)" -ne 0 ];then
>  	echo "SKIP: Need root privileges"
>  	exit $ksft_skip
> @@ -326,6 +334,8 @@ if [ ! -x "$(command -v ip)" ]; then
>  	exit $ksft_skip
>  fi
>  
> +test_iproute2_supp_or_ksft_skip
> +
>  cleanup &>/dev/null
>  
>  setup
> -- 
> 2.43.0
> 

LGTM

Reviewed-by: Hangbin Liu <liuhangbin@kylinos.cn>