| Message ID | 20230510111638.12408-1-andrea.mayer@uniroma2.it |
|---|---|
| Headers | show |
| Series | selftests: seg6: make srv6_end_dt4_l3vpn_test more robust | expand |
On 5/10/23 5:16 AM, Andrea Mayer wrote: > The srv6_end_dt4_l3vpn_test instantiates a virtual network consisting of > several routers (rt-1, rt-2) and hosts. > When the IPv6 addresses of rt-{1,2} routers are configured, the Deduplicate > Address Detection (DAD) kicks in when enabled in the Linux distros running > the selftests. DAD is used to check whether an IPv6 address is already > assigned in a network. Such a mechanism consists of sending an ICMPv6 Echo > Request and waiting for a reply. > As the DAD process could take too long to complete, it may cause the > failing of some tests carried out by the srv6_end_dt4_l3vpn_test script. > > To make the srv6_end_dt4_l3vpn_test more robust, we disable DAD on routers > since we configure the virtual network manually and do not need any address > deduplication mechanism at all. > > Fixes: 2195444e09b4 ("selftests: add selftest for the SRv6 End.DT4 behavior") > Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> > --- > tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > Reviewed-by: David Ahern <dsahern@kernel.org>
On 5/10/23 5:16 AM, Andrea Mayer wrote: > On some distributions, the rp_filter is automatically set (=1) by > default on a netdev basis (also on VRFs). > In an SRv6 End.DT4 behavior, decapsulated IPv4 packets are routed using > the table associated with the VRF bound to that tunnel. During lookup > operations, the rp_filter can lead to packet loss when activated on the > VRF. > Therefore, we chose to make this selftest more robust by explicitly > disabling the rp_filter during tests (as it is automatically set by some > Linux distributions). > > Fixes: 2195444e09b4 ("selftests: add selftest for the SRv6 End.DT4 behavior") > Reported-by: Hangbin Liu <liuhangbin@gmail.com> > Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> > Tested-by: Hangbin Liu <liuhangbin@gmail.com> > --- > .../testing/selftests/net/srv6_end_dt4_l3vpn_test.sh | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > Reviewed-by: David Ahern <dsahern@kernel.org>
Hello: This series was applied to netdev/net.git (main) by Jakub Kicinski <kuba@kernel.org>: On Wed, 10 May 2023 13:16:36 +0200 you wrote: > This pachset aims to improve and make more robust the selftests performed to > check whether SRv6 End.DT4 beahvior works as expected under different system > configurations. > Some Linux distributions enable Deduplication Address Detection and Reverse > Path Filtering mechanisms by default which can interfere with SRv6 End.DT4 > behavior and cause selftests to fail. > > [...] Here is the summary with links: - [net,1/2] selftests: seg6: disable DAD on IPv6 router cfg for srv6_end_dt4_l3vpn_test https://git.kernel.org/netdev/net/c/21a933c79a33 - [net,2/2] selftets: seg6: disable rp_filter by default in srv6_end_dt4_l3vpn_test https://git.kernel.org/netdev/net/c/f97b8401e0de You are awesome, thank you!
This pachset aims to improve and make more robust the selftests performed to check whether SRv6 End.DT4 beahvior works as expected under different system configurations. Some Linux distributions enable Deduplication Address Detection and Reverse Path Filtering mechanisms by default which can interfere with SRv6 End.DT4 behavior and cause selftests to fail. The following patches improve selftests for End.DT4 by taking these two mechanisms into account. Specifically: - patch 1/2: selftests: seg6: disable DAD on IPv6 router cfg for srv6_end_dt4_l3vpn_test - patch 2/2: selftets: seg6: disable rp_filter by default in srv6_end_dt4_l3vpn_test Thank you all, Andrea Andrea Mayer (2): selftests: seg6: disable DAD on IPv6 router cfg for srv6_end_dt4_l3vpn_test selftets: seg6: disable rp_filter by default in srv6_end_dt4_l3vpn_test .../selftests/net/srv6_end_dt4_l3vpn_test.sh | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)