linux.git/tools/testing/selftests/net, branch v7.1-rc5

selftests: net: Fix checksums in xdp_native

2026-05-21T14:47:00+00:00

Data adjustment cases failed with "Data exchange failed" when using IPv4
because the program did not update the IP and UDP checksums in the IPv4
branch. The issue was masked when both IPv4 and IPv6 were configured,
since the test harness prefers IPv6.

While here, generalize csum_fold_helper() to fold twice so it works for
any 32-bit input.

Fixes: 0b65cfcef9c5 ("selftests: drv-net: Test tail-adjustment support")
Reviewed-by: Carolina Jubran 
Reviewed-by: Dragos Tatulea 
Signed-off-by: Nimrod Oren 
Link: https://patch.msgid.link/20260520153928.3371765-1-noren@nvidia.com
Signed-off-by: Jakub Kicinski

selftests: rds: config: disable modules

2026-05-21T14:39:20+00:00

The run.sh script explicitly checks that CONFIG_MODULES is disabled.

By default, this config option is enabled. Explicitly disable it to be
able to run the RDS tests.

Note that writing '# CONFIG_(...) is not set' is usually recommended to
disable an option in the .config, but it looks like selftests usually
set 'CONFIG_(...)=n', which looks clearer.

Fixes: 0f5d68004780 ("selftests: rds: add tools/testing/selftests/net/rds/config")
Signed-off-by: Matthieu Baerts (NGI0) 
Reviewed-by: Allison Henderson 
Link: https://patch.msgid.link/20260520-net-rds-config-modules-v1-1-2100df02fe9a@kernel.org
Signed-off-by: Jakub Kicinski

selftests: bridge_vlan_mcast: Test toggling of multicast snooping

2026-05-20T01:15:22+00:00

Test toggling of multicast snooping when per-VLAN multicast snooping is
enabled. The test always passes, but without "bridge: mcast: Fix
possible use-after-free when removing a bridge port" it results in a
splat.

Acked-by: Nikolay Aleksandrov 
Signed-off-by: Ido Schimmel 
Link: https://patch.msgid.link/20260517121122.188333-3-idosch@nvidia.com
Signed-off-by: Jakub Kicinski

selftests: mptcp: drop nanoseconds width specifier

2026-05-19T13:36:35+00:00

Using the format specifier +%s%3N with GNU date is honoured, and only
prints 3 digits of the nanoseconds portion of the seconds since epoch,
which corresponds to the milliseconds.

The uutils implementation of date currently does not honour this, and
always prints all 9 digits. This is a known issue [1], but can be worked
around by adapting this test to use nanoseconds instead of microseconds,
and then divide it by 1e6.

This fix is similar to what has been done on systemd side [2], and it is
needed to run the selftests on Ubuntu 26.04, containing uutils 0.8.0.

Note that the Fixes tag is there even if this patch doesn't fix an issue
in the kernel selftests, but it is useful for those using uutils 0.8.0.

Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp")
Cc: stable@vger.kernel.org
Link: https://github.com/uutils/coreutils/issues/11658 [1]
Link: https://github.com/systemd/systemd/pull/41627 [2]
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-6-701e96419f2f@kernel.org
Signed-off-by: Paolo Abeni

selftests: mptcp: join: cover ADD_ADDR tx drop and list progress

2026-05-19T13:36:35+00:00

Extend add_addr_ports_tests with IPv6 signaling cases that exercise
ADD_ADDR tx-space shortage when tcp_timestamps are enabled.

Add one case to verify PM still progresses to later signal endpoints
after the first one is dropped.

This covers both failure accounting and the non-blocking behavior of
the announce list after a tx-space drop on pure ACK.

Signed-off-by: Li Xiasong 
Reviewed-by: Matthieu Baerts (NGI0) 
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-3-701e96419f2f@kernel.org
Signed-off-by: Paolo Abeni

selftests: ovpn: reduce remaining ping flood counts

2026-05-14T14:24:45+00:00

Commit 201ba706318d ("selftests: ovpn: reduce ping count in test.sh")
lowered the baseline traffic flood ping count to avoid flakes on slower
CI instances, however some instances were left out.

Apply the same limit to the remaining ovpn selftest flood pings that
still request 500 packets.

Fixes: 201ba706318d ("selftests: ovpn: reduce ping count in test.sh")
Signed-off-by: Ralf Lici 
Signed-off-by: Antonio Quartulli

selftests: mptcp: pm: restrict 'unknown' check to pm_nl_ctl

2026-05-07T01:16:45+00:00

When pm_netlink.sh is executed with '-i', 'ip mptcp' is used instead of
'pm_nl_ctl'. IPRoute2 doesn't support the 'unknown' flag, which has only
been added to 'pm_nl_ctl' for this specific check: to ensure that the
kernel ignores such unsupported flag.

No reason to add this flag to 'ip mptcp'. Then, this check should be
skipped when 'ip mptcp' is used.

Fixes: 0cef6fcac24d ("selftests: mptcp: ip_mptcp option for more scripts")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau 
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-11-fca8091060a4@kernel.org
Signed-off-by: Jakub Kicinski

selftests: mptcp: check output: catch cmd errors

2026-05-07T01:16:45+00:00

Using '${?}' inside the if-statement to check the returned value from
the command that was evaluated as part of the if-statement is not
correct: here, '${?}' will be linked to the previous instruction, not
the one that is expected here (${cmd}).

Instead, simply mark the error, except if an error is expected. If
that's the case, 1 can be passed as the 4th argument of this helper.
Three checks from pm_netlink.sh expect an error.

While at it, improve the error message when the command unexpectedly
fails or succeeds.

Note that we could expect a specific returned value, but the checks
currently expecting an error can be used with 'ip mptcp' or 'pm_nl_ctl',
and these two tools don't return the same error code.

Fixes: 2d0c1d27ea4e ("selftests: mptcp: add mptcp_lib_check_output helper")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau 
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-10-fca8091060a4@kernel.org
Signed-off-by: Jakub Kicinski

Merge tag 'ovpn-net-20260504' of https://github.com/OpenVPN/ovpn-net-next

2026-05-06T23:10:03+00:00

Antonio Quartulli says:

====================
Includes changes:

* ensure MAC header offset is reset before delivering packet
* ensure gro_cells_receive() and dstats_dev_add() are called
  with BH disabled
* reduce ping count in selftest to ensure it completes within
  timeout

* tag 'ovpn-net-20260504' of https://github.com/OpenVPN/ovpn-net-next:
  selftests: ovpn: reduce ping count in test.sh
  ovpn: ensure packet delivery happens with BH disabled
  ovpn: reset MAC header before passing skb up
====================

Link: https://patch.msgid.link/20260504230305.2681646-1-antonio@openvpn.net
Signed-off-by: Jakub Kicinski

selftests: openvswitch: add tests for tunnel vport refcounting

2026-05-05T13:19:37+00:00

There were a few issues found with the tunnel vport types around the
vport destruction code.  Add some basic tests, so at least we know that
they can be properly added and removed without obvious issues.

The test creates OVS datapath, adds a non-LWT tunnel port, makes sure
they are created, and then removes the datapath and waits for all the
ports to be gone.

The dpctl script had a few bugs in the none-lwt tunnel creation code,
so fixing them as well to make the testing possible:
- The type of the --lwt option changed in order to properly disable it.
- Removed byte order conversion for the port numbers, as the value
  supposed to be in the host order.
- Added missing 'gre' choice for the tunnel type.

Signed-off-by: Ilya Maximets 
Acked-by: Eelco Chaudron 
Acked-by: Aaron Conole 
Link: https://patch.msgid.link/20260430233848.440994-3-i.maximets@ovn.org
Signed-off-by: Paolo Abeni