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2026-03-25selftests: mptcp: join: check RM_ADDR not sent over same subflowMatthieu Baerts (NGI0)1-0/+36
[ Upstream commit 560edd99b5f58b2d4bbe3c8e51e1eed68d887b0e ] This validates the previous commit: RM_ADDR were sent over the first found active subflow which could be the same as the one being removed. It is more likely to loose this notification. For this check, RM_ADDR are explicitly dropped when trying to send them over the initial subflow, when removing the endpoint attached to it. If it is dropped, the test will complain because some RM_ADDR have not been received. Note that only the RM_ADDR are dropped, to allow the linked subflow to be quickly and cleanly closed. To only drop those RM_ADDR, a cBPF byte code is used. If the IPTables commands fail, that's OK, the tests will continue to pass, but not validate this part. This can be ignored: another subtest fully depends on such command, and will be marked as skipped. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 8dd5efb1f91b ("mptcp: send ack for rm_addr") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260303-net-mptcp-misc-fixes-7-0-rc2-v1-3-4b5462b6f016@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-03-25selftests: mptcp: add a check for 'add_addr_accepted'Gang Yan1-0/+7
[ Upstream commit 0eee0fdf9b7b0baf698f9b426384aa9714d76a51 ] The previous patch fixed an issue with the 'add_addr_accepted' counter. This was not spot by the test suite. Check this counter and 'add_addr_signal' in MPTCP Join 'delete re-add signal' test. This should help spotting similar regressions later on. These counters are crucial for ensuring the MPTCP path manager correctly handles the subflow creation via 'ADD_ADDR'. Signed-off-by: Gang Yan <yangang@kylinos.cn> Reviewed-by: Geliang Tang <geliang@kernel.org> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251118-net-mptcp-misc-fixes-6-18-rc6-v1-11-806d3781c95f@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: 560edd99b5f5 ("selftests: mptcp: join: check RM_ADDR not sent over same subflow") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-03-25selftests: mptcp: join: check removing signal+subflow endpMatthieu Baerts (NGI0)1-0/+13
commit 1777f349ff41b62dfe27454b69c27b0bc99ffca5 upstream. This validates the previous commit: endpoints with both the signal and subflow flags should always be marked as used even if it was not possible to create new subflows due to the MPTCP PM limits. For this test, an extra endpoint is created with both the signal and the subflow flags, and limits are set not to create extra subflows. In this case, an ADD_ADDR is sent, but no subflows are created. Still, the local endpoint is marked as used, and no warning is fired when removing the endpoint, after having sent a RM_ADDR. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 85df533a787b ("mptcp: pm: do not ignore 'subflow' if 'signal' flag is also set") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260303-net-mptcp-misc-fixes-7-0-rc2-v1-5-4b5462b6f016@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-03-25selftests: mptcp: more stable simult_flows testsPaolo Abeni1-4/+7
commit 8c09412e584d9bcc0e71d758ec1008d1c8d1a326 upstream. By default, the netem qdisc can keep up to 1000 packets under its belly to deal with the configured rate and delay. The simult flows test-case simulates very low speed links, to avoid problems due to slow CPUs and the TCP stack tend to transmit at a slightly higher rate than the (virtual) link constraints. All the above causes a relatively large amount of packets being enqueued in the netem qdiscs - the longer the transfer, the longer the queue - producing increasingly high TCP RTT samples and consequently increasingly larger receive buffer size due to DRS. When the receive buffer size becomes considerably larger than the needed size, the tests results can flake, i.e. because minimal inaccuracy in the pacing rate can lead to a single subflow usage towards the end of the connection for a considerable amount of data. Address the issue explicitly setting netem limits suitable for the configured link speeds and unflake all the affected tests. Fixes: 1a418cb8e888 ("mptcp: simult flow self-tests") Cc: stable@vger.kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260303-net-mptcp-misc-fixes-7-0-rc2-v1-1-4b5462b6f016@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-03-04selftests: forwarding: vxlan_bridge_1d_ipv6: fix test failure with ↵Aleksei Oladko1-1/+1
br_netfilter enabled [ Upstream commit ce9f6aec0fb780dafc1dfc5f47c688422aff464a ] The test generates VXLAN traffic using mausezahn, where the encapsulated inner IPv6 packet has an incorrect payload length set in the IPv6 header. After VXLAN decapsulation, such packets do not pass sanity checks in br_netfilter and are dropped, which causes the test to fail. Fix this by setting the correct IPv6 payload length for the encapsulated packet generated by mausezahn, so that the packet is accepted by br_netfilter. tools/testing/selftests/net/forwarding/vxlan_bridge_1d_ipv6.sh lines 698-706 )"00:03:"$( : Payload length )"3a:"$( : Next header )"04:"$( : Hop limit )"$saddr:"$( : IP saddr )"$daddr:"$( : IP daddr )"80:"$( : ICMPv6.type )"00:"$( : ICMPv6.code )"00:"$( : ICMPv6.checksum ) Data after IPv6 header: • 80: — 1 byte (ICMPv6 type) • 00: — 1 byte (ICMPv6 code) • 00: — 1 byte (ICMPv6 checksum, truncated) Total: 3 bytes → 00:03 is correct. The old value 00:08 did not match the actual payload size. Fixes: b07e9957f220 ("selftests: forwarding: Add VxLAN tests with a VLAN-unaware bridge for IPv6") Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260213131907.43351-3-aleksey.oladko@virtuozzo.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-03-04selftests: forwarding: vxlan_bridge_1d: fix test failure with br_netfilter ↵Aleksei Oladko1-10/+16
enabled [ Upstream commit 02cb2e6bacbb08ebf6acb61be816efd11e1f4a21 ] The test generates VXLAN traffic using mausezahn, where the encapsulated inner IPv4 packet contains a zero IP header checksum. After VXLAN decapsulation, such packets do not pass sanity checks in br_netfilter and are dropped, which causes the test to fail. Fix this by calculating and setting a valid IPv4 header checksum for the encapsulated packet generated by mausezahn, so that the packet is accepted by br_netfilter. Fixed by using the payload_template_calc_checksum() / payload_template_expand_checksum() helpers that are only available in v6.3 and newer kernels. Fixes: a0b61f3d8ebf ("selftests: forwarding: vxlan_bridge_1d: Add an ECN decap test") Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260213131907.43351-2-aleksey.oladko@virtuozzo.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-02-16selftests: mptcp: pm: ensure unknown flags are ignoredMatthieu Baerts (NGI0)2-0/+15
commit 29f4801e9c8dfd12bdcb33b61a6ac479c7162bd7 upstream. This validates the previous commit: the userspace can set unknown flags -- the 7th bit is currently unused -- without errors, but only the supported ones are printed in the endpoints dumps. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 01cacb00b35c ("mptcp: add netlink-based PM") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251205-net-mptcp-misc-fixes-6-19-rc1-v1-2-9e4781a6c1b8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> [ Conflicts in pm_netlink.sh, because some refactoring have been done later on: commit 0d16ed0c2e74 ("selftests: mptcp: add {get,format}_endpoint(s) helpers") and commit c99d57d0007a ("selftests: mptcp: use pm_nl endpoint ops") are not in this version. The same operation can still be done at the same place, without using the new helpers. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-06selftests: mptcp: join: fix local endp not being trackedMatthieu Baerts (NGI0)1-5/+4
commit c5d5ecf21fdd9ce91e6116feb3aa83cee73352cc upstream. When running this mptcp_join.sh selftest on older kernel versions not supporting local endpoints tracking, this test fails because 3 MP_JOIN ACKs have been received, while only 2 were expected. It is not clear why only 2 MP_JOIN ACKs were expected on old kernel versions, while 3 MP_JOIN SYN and SYN+ACK were expected. When testing on the v5.15.197 kernel, 3 MP_JOIN ACKs are seen, which is also what is expected in the selftests included in this kernel version, see commit f4480eaad489 ("selftests: mptcp: add missing join check"). Switch the expected MP_JOIN ACKs to 3. While at it, move this chk_join_nr helper out of the special condition for older kernel versions as it is now the same as with more recent ones. Also, invert the condition to be more logical: what's expected on newer kernel versions having such helper first. Fixes: d4c81bbb8600 ("selftests: mptcp: join: support local endpoint being tracked or not") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-5-7f71e1bc4feb@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-06selftests: mptcp: check subflow errors in close eventsMatthieu Baerts (NGI0)1-3/+20
commit 2ef9e3a3845d0a20b62b01f5b731debd0364688d upstream. This validates the previous commit: subflow closed events should contain an error field when a subflow got closed with an error, e.g. reset or timeout. For this test, the chk_evt_nr helper has been extended to check attributes in the matched events. In this test, the 2 subflow closed events should have an error. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 15cc10453398 ("mptcp: deliver ssk errors to msk") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-4-7f71e1bc4feb@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-06selftests: mptcp: check no dup close events after errorMatthieu Baerts (NGI0)1-0/+51
commit 8467458dfa61b37e259e3485a5d3e415d08193c1 upstream. This validates the previous commit: subflow closed events are re-sent with less info when the initial subflow is disconnected after an error and each time a subflow is closed after that. In this new test, the userspace PM is involved because that's how it was discovered, but it is not specific to it. The initial subflow is terminated with a RESET, and that will cause the subflow disconnect. Then, a new subflow is initiated, but also got rejected, which cause a second subflow closed event, but not a third one. While at it, in case of failure to get the expected amount of events, the events are printed. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: d82809b6c5f2 ("mptcp: avoid duplicated SUB_CLOSED events") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-2-7f71e1bc4feb@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-30selftests: net: amt: wait longer for connection before sending packetsTaehee Yoo1-2/+5
[ Upstream commit 04708606fd7bdc34b69089a4ff848ff36d7088f9 ] Both send_mcast4() and send_mcast6() use sleep 2 to wait for the tunnel connection between the gateway and the relay, and for the listener socket to be created in the LISTENER namespace. However, tests sometimes fail because packets are sent before the connection is fully established. Increase the waiting time to make the tests more reliable, and use wait_local_port_listen() to explicitly wait for the listener socket. Fixes: c08e8baea78e ("selftests: add amt interface selftest script") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20260120133930.863845-1-ap420073@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-30selftests: net: fib-onlink-tests: Convert to use namespaces by defaultRicardo B. Marlière1-41/+30
[ Upstream commit 4f5f148dd7c0459229d2ab9a769b2e820f9ee6a2 ] Currently, the test breaks if the SUT already has a default route configured for IPv6. Fix by avoiding the use of the default namespace. Fixes: 4ed591c8ab44 ("net/ipv6: Allow onlink routes to have a device mismatch if it is the default route") Suggested-by: Fernando Fernandez Mancera <fmancera@suse.de> Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de> Link: https://patch.msgid.link/20260113-selftests-net-fib-onlink-v2-1-89de2b931389@suse.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-30selftests/net: convert fib-onlink-tests.sh to run it in unique namespaceHangbin Liu1-6/+3
[ Upstream commit 3a06833b2adc0a902f2469ad4ce41ccd64f1f3ab ] Remove PEER_CMD, which is not used in this test Here is the test result after conversion. ]# ./fib-onlink-tests.sh Error: ipv4: FIB table does not exist. Flush terminated Error: ipv6: FIB table does not exist. Flush terminated ######################################## Configuring interfaces ... TEST: Gateway resolves to wrong nexthop device - VRF [ OK ] Tests passed: 38 Tests failed: 0 Acked-by: David Ahern <dsahern@kernel.org> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Link: https://lore.kernel.org/r/20231213060856.4030084-11-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: 4f5f148dd7c0 ("selftests: net: fib-onlink-tests: Convert to use namespaces by default") Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-30selftests: drv-net: fix RPS mask handling for high CPU numbersGal Pressman1-2/+2
[ Upstream commit cf055f8c000445aa688c53a706ef4f580818eedb ] The RPS bitmask bounds check uses ~(RPS_MAX_CPUS - 1) which equals ~15 = 0xfff0, only allowing CPUs 0-3. Change the mask to ~((1UL << RPS_MAX_CPUS) - 1) = ~0xffff to allow CPUs 0-15. Fixes: 5ebfb4cc3048 ("selftests/net: toeplitz test") Reviewed-by: Nimrod Oren <noren@nvidia.com> Signed-off-by: Gal Pressman <gal@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260112173715.384843-3-gal@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-11selftests: net: fix "buffer overflow detected" for tap.cAlice C. Munduruca1-11/+5
[ Upstream commit 472c5dd6b95c02b3e5d7395acf542150e91165e7 ] When the selftest 'tap.c' is compiled with '-D_FORTIFY_SOURCE=3', the strcpy() in rtattr_add_strsz() is replaced with a checked version which causes the test to consistently fail when compiled with toolchains for which this option is enabled by default. TAP version 13 1..3 # Starting 3 tests from 1 test cases. # RUN tap.test_packet_valid_udp_gso ... *** buffer overflow detected ***: terminated # test_packet_valid_udp_gso: Test terminated by assertion # FAIL tap.test_packet_valid_udp_gso not ok 1 tap.test_packet_valid_udp_gso # RUN tap.test_packet_valid_udp_csum ... *** buffer overflow detected ***: terminated # test_packet_valid_udp_csum: Test terminated by assertion # FAIL tap.test_packet_valid_udp_csum not ok 2 tap.test_packet_valid_udp_csum # RUN tap.test_packet_crash_tap_invalid_eth_proto ... *** buffer overflow detected ***: terminated # test_packet_crash_tap_invalid_eth_proto: Test terminated by assertion # FAIL tap.test_packet_crash_tap_invalid_eth_proto not ok 3 tap.test_packet_crash_tap_invalid_eth_proto # FAILED: 0 / 3 tests passed. # Totals: pass:0 fail:3 xfail:0 xpass:0 skip:0 error:0 A buffer overflow is detected by the fortified glibc __strcpy_chk() since the __builtin_object_size() of `RTA_DATA(rta)` is incorrectly reported as 1, even though there is ample space in its bounding buffer `req`. Additionally, given that IFLA_IFNAME also expects a null-terminated string, callers of rtaddr_add_str{,sz}() could simply use the rtaddr_add_strsz() variant. (which has been renamed to remove the trailing `sz`) memset() has been used for this function since it is unchecked and thus circumvents the issue discussed in the previous paragraph. Fixes: 2e64fe4624d1 ("selftests: add few test cases for tap driver") Signed-off-by: Alice C. Munduruca <alice.munduruca@canonical.com> Reviewed-by: Cengiz Can <cengiz.can@canonical.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251216170641.250494-1-alice.munduruca@canonical.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-11selftests: openvswitch: Fix escape chars in regexp.Adrian Moreno1-8/+8
commit 3fde60afe1f84746c1177861bd27b3ebb00cb8f5 upstream. Character sequences starting with `\` are interpreted by python as escaped Unicode characters. However, they have other meaning in regular expressions (e.g: "\d"). It seems Python >= 3.12 starts emitting a SyntaxWarning when these escaped sequences are not recognized as valid Unicode characters. An example of these warnings: tools/testing/selftests/net/openvswitch/ovs-dpctl.py:505: SyntaxWarning: invalid escape sequence '\d' Fix all the warnings by flagging literals as raw strings. Signed-off-by: Adrian Moreno <amorenoz@redhat.com> Reviewed-by: Aaron Conole <aconole@redhat.com> Link: https://lore.kernel.org/r/20240416090913.2028475-1-amorenoz@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Adrian Yip <adrian.ytw@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-12-07selftests: mptcp: join: properly kill background tasksMatthieu Baerts (NGI0)2-7/+28
commit 852b644acbce1529307a4bb283752c4e77b5cda7 upstream. The 'run_tests' function is executed in the background, but killing its associated PID would not kill the children tasks running in the background. To properly kill all background tasks, 'kill -- -PID' could be used, but this requires kill from procps-ng. Instead, all children tasks are listed using 'ps', and 'kill' is called with all PIDs of this group. Fixes: 31ee4ad86afd ("selftests: mptcp: join: stop transfer when check is done (part 1)") Cc: stable@vger.kernel.org Fixes: 04b57c9e096a ("selftests: mptcp: join: stop transfer when check is done (part 2)") Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251110-net-mptcp-sft-join-unstable-v1-6-a4332c714e10@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> [ Conflicts in mptcp_join.sh, because commit e3b47e460b4b ("selftests: mptcp: userspace pm remove initial subflow") and commit b9fb176081fb ("selftests: mptcp: userspace pm send RM_ADDR for ID 0") are not in this version. They introduced new subtests that got modified by this patch. That's OK, no need to modify them if they are not there: the conflicts can be dropped. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-12-01selftests: mptcp: join: endpoints: longer transferMatthieu Baerts (NGI0)1-4/+4
[ Upstream commit 6457595db9870298ee30b6d75287b8548e33fe19 ] In rare cases, when the test environment is very slow, some userspace tests can fail because some expected events have not been seen. Because the tests are expecting a long on-going connection, and they are not waiting for the end of the transfer, it is fine to make the connection longer. This connection will be killed at the end, after the verifications, so making it longer doesn't change anything, apart from avoid it to end before the end of the verifications To play it safe, all endpoints tests not waiting for the end of the transfer are now sharing a longer file (128KB) at slow speed. Fixes: 69c6ce7b6eca ("selftests: mptcp: add implicit endpoint test case") Cc: stable@vger.kernel.org Fixes: e274f7154008 ("selftests: mptcp: add subflow limits test-cases") Fixes: b5e2fb832f48 ("selftests: mptcp: add explicit test case for remove/readd") Fixes: e06959e9eebd ("selftests: mptcp: join: test for flush/re-add endpoints") Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251110-net-mptcp-sft-join-unstable-v1-3-a4332c714e10@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> [ removed curly braces and stderr redirection ] Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-12-01selftests: net: use BASH for bareudp testingPo-Hsu Lin1-1/+1
[ Upstream commit 9311e9540a8b406d9f028aa87fb072a3819d4c82 ] In bareudp.sh, this script uses /bin/sh and it will load another lib.sh BASH script at the very beginning. But on some operating systems like Ubuntu, /bin/sh is actually pointed to DASH, thus it will try to run BASH commands with DASH and consequently leads to syntax issues: # ./bareudp.sh: 4: ./lib.sh: Bad substitution # ./bareudp.sh: 5: ./lib.sh: source: not found # ./bareudp.sh: 24: ./lib.sh: Syntax error: "(" unexpected Fix this by explicitly using BASH for bareudp.sh. This fixes test execution failures on systems where /bin/sh is not BASH. Reported-by: Edoardo Canepa <edoardo.canepa@canonical.com> Link: https://bugs.launchpad.net/bugs/2129812 Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Link: https://patch.msgid.link/20251027095710.2036108-2-po-hsu.lin@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests: mptcp: connect: trunc: read all recv dataMatthieu Baerts (NGI0)1-5/+13
commit ee79980f7a428ec299f6261bea4c1084dcbc9631 upstream. MPTCP Join "fastclose server" selftest is sometimes failing because the client output file doesn't have the expected size, e.g. 296B instead of 1024B. When looking at a packet trace when this happens, the server sent the expected 1024B in two parts -- 100B, then 924B -- then the MP_FASTCLOSE. It is then strange to see the client only receiving 296B, which would mean it only got a part of the second packet. The problem is then not on the networking side, but rather on the data reception side. When mptcp_connect is launched with '-f -1', it means the connection might stop before having sent everything, because a reset has been received. When this happens, the program was directly stopped. But it is also possible there are still some data to read, simply because the previous 'read' step was done with a buffer smaller than the pending data, see do_rnd_read(). In this case, it is important to read what's left in the kernel buffers before stopping without error like before. SIGPIPE is now ignored, not to quit the app before having read everything. Fixes: 6bf41020b72b ("selftests: mptcp: update and extend fastclose test-cases") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251110-net-mptcp-sft-join-unstable-v1-5-a4332c714e10@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-11-24selftests: mptcp: join: rm: set backup flagMatthieu Baerts (NGI0)1-27/+27
commit aea73bae662a0e184393d6d7d0feb18d2577b9b9 upstream. Some of these 'remove' tests rarely fail because a subflow has been reset instead of cleanly removed. This can happen when one extra subflow which has never carried data is being closed (FIN) on one side, while the other is sending data for the first time. To avoid such subflows to be used right at the end, the backup flag has been added. With that, data will be only carried on the initial subflow. Fixes: d2c4333a801c ("selftests: mptcp: add testcases for removing addrs") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251110-net-mptcp-sft-join-unstable-v1-2-a4332c714e10@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-11-24selftests: mptcp: connect: fix fallback note due to OoOMatthieu Baerts (NGI0)1-1/+1
commit 63c643aa7b7287fdbb0167063785f89ece3f000f upstream. The "fallback due to TCP OoO" was never printed because the stat_ooo_now variable was checked twice: once in the parent if-statement, and one in the child one. The second condition was then always true then, and the 'else' branch was never taken. The idea is that when there are more ACK + MP_CAPABLE than expected, the test either fails if there was no out of order packets, or a notice is printed. Fixes: 69ca3d29a755 ("mptcp: update selftest for fallback due to OoO") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251110-net-mptcp-sft-join-unstable-v1-1-a4332c714e10@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-11-24selftests: net: local_termination: Wait for interfaces to come upAlexander Sverdlin1-0/+2
[ Upstream commit 57531b3416448d1ced36a2a974a4085ec43d57b0 ] It seems that most of the tests prepare the interfaces once before the test run (setup_prepare()), rely on setup_wait() to wait for link and only then run the test(s). local_termination brings the physical interfaces down and up during test run but never wait for them to come up. If the auto-negotiation takes some seconds, first test packets are being lost, which leads to false-negative test results. Use setup_wait() in run_test() to make sure auto-negotiation has been completed after all simple_if_init() calls on physical interfaces and test packets will not be lost because of the race against link establishment. Fixes: 90b9566aa5cd3f ("selftests: forwarding: add a test for local_termination.sh") Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Link: https://patch.msgid.link/20251106161213.459501-1-alexander.sverdlin@siemens.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests/net: use destination options instead of hop-by-hopAnubhav Singh1-2/+2
[ Upstream commit f8e8486702abb05b8c734093aab1606af0eac068 ] The GRO self-test, gro.c, currently constructs IPv6 packets containing a Hop-by-Hop Options header (IPPROTO_HOPOPTS) to ensure the GRO path correctly handles IPv6 extension headers. However, network elements may be configured to drop packets with the Hop-by-Hop Options header (HBH). This causes the self-test to fail in environments where such network elements are present. To improve the robustness and reliability of this test in diverse network environments, switch from using IPPROTO_HOPOPTS to IPPROTO_DSTOPTS (Destination Options). The Destination Options header is less likely to be dropped by intermediate routers and still serves the core purpose of the test: validating GRO's handling of an IPv6 extension header. This change ensures the test can execute successfully without being incorrectly failed by network policies outside the kernel's control. Fixes: 7d1575014a63 ("selftests/net: GRO coalesce test") Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Anubhav Singh <anubhavsinggh@google.com> Link: https://patch.msgid.link/20251030060436.1556664-1-anubhavsinggh@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests/net: fix GRO coalesce test and add ext header coalesce testsRichard Gobert1-6/+87
[ Upstream commit 4e321d590cec6053cb3c566413794706035ee638 ] Currently there is no test which checks that IPv6 extension header packets successfully coalesce. This commit adds a test, which verifies two IPv6 packets with HBH extension headers do coalesce, and another test which checks that packets with different extension header data do not coalesce in GRO. I changed the receive socket filter to accept a packet with one extension header. This change exposed a bug in the fragment test -- the old BPF did not accept the fragment packet. I updated correct_num_packets in the fragment test accordingly. Signed-off-by: Richard Gobert <richardbgobert@gmail.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/r/69282fed-2415-47e8-b3d3-34939ec3eb56@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: f8e8486702ab ("selftests/net: use destination options instead of hop-by-hop") Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests/net: fix out-of-order delivery of FIN in gro:tcp testAnubhav Singh1-0/+8
[ Upstream commit 02d064de05b1fcca769391fa82d205bed8bb9bf0 ] Due to the gro_sender sending data packets and FIN packets in very quick succession, these are received almost simultaneously by the gro_receiver. FIN packets are sometimes processed before the data packets leading to intermittent (~1/100) test failures. This change adds a delay of 100ms before sending FIN packets in gro:tcp test to avoid the out-of-order delivery. The same mitigation already exists for the gro:ip test. Fixes: 7d1575014a63 ("selftests/net: GRO coalesce test") Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Anubhav Singh <anubhavsinggh@google.com> Link: https://patch.msgid.link/20251030062818.1562228-1-anubhavsinggh@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests: Replace sleep with slowwaitDavid Ahern1-1/+1
[ Upstream commit 2f186dd5585c3afb415df80e52f71af16c9d3655 ] Replace the sleep in kill_procs with slowwait. Signed-off-by: David Ahern <dsahern@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250910025828.38900-2-dsahern@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests: Disable dad for ipv6 in fcnal-test.shDavid Ahern1-0/+2
[ Upstream commit 53d591730ea34f97a82f7ec6e7c987ca6e34dc21 ] Constrained test environment; duplicate address detection is not needed and causes races so disable it. Signed-off-by: David Ahern <dsahern@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250910025828.38900-1-dsahern@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests: traceroute: Use require_command()Ido Schimmel1-10/+3
[ Upstream commit 47efbac9b768553331b9459743a29861e0acd797 ] Use require_command() so that the test will return SKIP (4) when a required command is not present. Before: # ./traceroute.sh SKIP: Could not run IPV6 test without traceroute6 SKIP: Could not run IPV4 test without traceroute $ echo $? 0 After: # ./traceroute.sh TEST: traceroute6 not installed [SKIP] $ echo $? 4 Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250908073238.119240-6-idosch@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests: net: replace sleeps in fcnal-test with waitsJakub Kicinski1-214/+214
[ Upstream commit 15c068cb214d74a2faca9293b25f454242d0d65e ] fcnal-test.sh already includes lib.sh, use relevant helpers instead of sleeping. Replace sleep after starting nettest as a server with wait_local_port_listen. Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250909223837.863217-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests/net: Ensure assert() triggers in psock_tpacket.cWake Liu1-0/+1
[ Upstream commit bc4c0a48bdad7f225740b8e750fdc1da6d85e1eb ] The get_next_frame() function in psock_tpacket.c was missing a return statement in its default switch case, leading to a compiler warning. This was caused by a `bug_on(1)` call, which is defined as an `assert()`, being compiled out because NDEBUG is defined during the build. Instead of adding a `return NULL;` which would silently hide the error and could lead to crashes later, this change restores the original author's intent. By adding `#undef NDEBUG` before including <assert.h>, we ensure the assertion is active and will cause the test to abort if this unreachable code is ever executed. Signed-off-by: Wake Liu <wakel@google.com> Link: https://patch.msgid.link/20250809062013.2407822-1-wakel@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-24selftests/net: Replace non-standard __WORDSIZE with sizeof(long) * 8Wake Liu1-2/+1
[ Upstream commit c36748e8733ef9c5f4cd1d7c4327994e5b88b8df ] The `__WORDSIZE` macro, defined in the non-standard `<bits/wordsize.h>` header, is a GNU extension and not universally available with all toolchains, such as Clang when used with musl libc. This can lead to build failures in environments where this header is missing. The intention of the code is to determine the bit width of a C `long`. Replace the non-portable `__WORDSIZE` with the standard and portable `sizeof(long) * 8` expression to achieve the same result. This change also removes the inclusion of the now-unused `<bits/wordsize.h>` header. Signed-off-by: Wake Liu <wakel@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-11-02selftests: mptcp: join: mark 'delete re-add signal' as skipped if not supportedMatthieu Baerts (NGI0)1-1/+1
[ Upstream commit c3496c052ac36ea98ec4f8e95ae6285a425a2457 ] The call to 'continue_if' was missing: it properly marks a subtest as 'skipped' if the attached condition is not valid. Without that, the test is wrongly marked as passed on older kernels. Fixes: b5e2fb832f48 ("selftests: mptcp: add explicit test case for remove/readd") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251020-net-mptcp-c-flag-late-add-addr-v1-4-8207030cb0e8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-11-02selftests: mptcp: disable add_addr retrans in endpoint_testsGeliang Tang1-0/+1
[ Upstream commit f92199f551e617fae028c5c5905ddd63e3616e18 ] To prevent test instability in the "delete re-add signal" test caused by ADD_ADDR retransmissions, disable retransmissions for this test by setting net.mptcp.add_addr_timeout to 0. Suggested-by: Matthieu Baerts <matttbe@kernel.org> Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250815-net-mptcp-misc-fixes-6-17-rc2-v1-6-521fe9957892@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: c3496c052ac3 ("selftests: mptcp: join: mark 'delete re-add signal' as skipped if not supported") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-10-29selftests: mptcp: join: mark implicit tests as skipped if not supportedMatthieu Baerts (NGI0)1-2/+2
commit 973f80d715bd2504b4db6e049f292e694145cd79 upstream. The call to 'continue_if' was missing: it properly marks a subtest as 'skipped' if the attached condition is not valid. Without that, the test is wrongly marked as passed on older kernels. Fixes: 36c4127ae8dd ("selftests: mptcp: join: skip implicit tests if not supported") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251020-net-mptcp-c-flag-late-add-addr-v1-3-8207030cb0e8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-10-29selftests: mptcp: join: mark 'flush re-add' as skipped if not supportedMatthieu Baerts (NGI0)1-1/+1
commit d68460bc31f9c8c6fc81fbb56ec952bec18409f1 upstream. The call to 'continue_if' was missing: it properly marks a subtest as 'skipped' if the attached condition is not valid. Without that, the test is wrongly marked as passed on older kernels. Fixes: e06959e9eebd ("selftests: mptcp: join: test for flush/re-add endpoints") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20251020-net-mptcp-c-flag-late-add-addr-v1-2-8207030cb0e8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-10-29selftests: net: fix server bind failure in sctp_vrf.shXin Long2-43/+47
[ Upstream commit a73ca0449bcb7c238097cc6a1bf3fd82a78374df ] sctp_vrf.sh could fail: TEST 12: bind vrf-2 & 1 in server, connect from client 1 & 2, N [FAIL] not ok 1 selftests: net: sctp_vrf.sh # exit=3 The failure happens when the server bind in a new run conflicts with an existing association from the previous run: [1] ip netns exec $SERVER_NS ./sctp_hello server ... [2] ip netns exec $CLIENT_NS ./sctp_hello client ... [3] ip netns exec $SERVER_NS pkill sctp_hello ... [4] ip netns exec $SERVER_NS ./sctp_hello server ... It occurs if the client in [2] sends a message and closes immediately. With the message unacked, no SHUTDOWN is sent. Killing the server in [3] triggers a SHUTDOWN the client also ignores due to the unacked message, leaving the old association alive. This causes the bind at [4] to fail until the message is acked and the client responds to a second SHUTDOWN after the server’s T2 timer expires (3s). This patch fixes the issue by preventing the client from sending data. Instead, the client blocks on recv() and waits for the server to close. It also waits until both the server and the client sockets are fully released in stop_server and wait_client before restarting. Additionally, replace 2>&1 >/dev/null with -q in sysctl and grep, and drop other redundant 2>&1 >/dev/null redirections, and fix a typo from N to Y (connect successfully) in the description of the last test. Fixes: a61bd7b9fef3 ("selftests: add a selftest for sctp vrf") Reported-by: Hangbin Liu <liuhangbin@gmail.com> Tested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Xin Long <lucien.xin@gmail.com> Link: https://patch.msgid.link/be2dacf52d0917c4ba5e2e8c5a9cb640740ad2b6.1760731574.git.lucien.xin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-29selftests/net: convert sctp_vrf.sh to run it in unique namespaceHangbin Liu1-9/+3
[ Upstream commit 90e271f65ee428ae5a75e783f5ba50a10dece09d ] Here is the test result after conversion. ]# ./sctp_vrf.sh Testing For SCTP VRF: TEST 01: nobind, connect from client 1, l3mdev_accept=1, Y [PASS] ... TEST 12: bind vrf-2 & 1 in server, connect from client 1 & 2, N [PASS] ***v6 Tests Done*** Acked-by: David Ahern <dsahern@kernel.org> Reviewed-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Stable-dep-of: a73ca0449bcb ("selftests: net: fix server bind failure in sctp_vrf.sh") Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-19selftests: mptcp: join: validate C-flag + def limitMatthieu Baerts (NGI0)1-0/+11
commit 008385efd05e04d8dff299382df2e8be0f91d8a0 upstream. The previous commit adds an exception for the C-flag case. The 'mptcp_join.sh' selftest is extended to validate this case. In this subtest, there is a typical CDN deployment with a client where MPTCP endpoints have been 'automatically' configured: - the server set net.mptcp.allow_join_initial_addr_port=0 - the client has multiple 'subflow' endpoints, and the default limits: not accepting ADD_ADDRs. Without the parent patch, the client is not able to establish new subflows using its 'subflow' endpoints. The parent commit fixes that. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: df377be38725 ("mptcp: add deny_join_id0 in mptcp_options_received") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-2-ad126cc47c6b@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-10-02selftests: fib_nexthops: Fix creation of non-FDB nexthopsIdo Schimmel1-6/+6
[ Upstream commit c29913109c70383cdf90b6fc792353e1009f24f5 ] The test creates non-FDB nexthops without a nexthop device which leads to the expected failure, but for the wrong reason: # ./fib_nexthops.sh -t "ipv6_fdb_grp_fcnal ipv4_fdb_grp_fcnal" -v IPv6 fdb groups functional -------------------------- [...] COMMAND: ip -netns me-nRsN3E nexthop add id 63 via 2001:db8:91::4 Error: Device attribute required for non-blackhole and non-fdb nexthops. COMMAND: ip -netns me-nRsN3E nexthop add id 64 via 2001:db8:91::5 Error: Device attribute required for non-blackhole and non-fdb nexthops. COMMAND: ip -netns me-nRsN3E nexthop add id 103 group 63/64 fdb Error: Invalid nexthop id. TEST: Fdb Nexthop group with non-fdb nexthops [ OK ] [...] IPv4 fdb groups functional -------------------------- [...] COMMAND: ip -netns me-nRsN3E nexthop add id 14 via 172.16.1.2 Error: Device attribute required for non-blackhole and non-fdb nexthops. COMMAND: ip -netns me-nRsN3E nexthop add id 15 via 172.16.1.3 Error: Device attribute required for non-blackhole and non-fdb nexthops. COMMAND: ip -netns me-nRsN3E nexthop add id 103 group 14/15 fdb Error: Invalid nexthop id. TEST: Fdb Nexthop group with non-fdb nexthops [ OK ] COMMAND: ip -netns me-nRsN3E nexthop add id 16 via 172.16.1.2 fdb COMMAND: ip -netns me-nRsN3E nexthop add id 17 via 172.16.1.3 fdb COMMAND: ip -netns me-nRsN3E nexthop add id 104 group 14/15 Error: Invalid nexthop id. TEST: Non-Fdb Nexthop group with fdb nexthops [ OK ] [...] COMMAND: ip -netns me-0dlhyd ro add 172.16.0.0/22 nhid 15 Error: Nexthop id does not exist. TEST: Route add with fdb nexthop [ OK ] In addition, as can be seen in the above output, a couple of IPv4 test cases used the non-FDB nexthops (14 and 15) when they intended to use the FDB nexthops (16 and 17). These test cases only passed because failure was expected, but they failed for the wrong reason. Fix the test to create the non-FDB nexthops with a nexthop device and adjust the IPv4 test cases to use the FDB nexthops instead of the non-FDB nexthops. Output after the fix: # ./fib_nexthops.sh -t "ipv6_fdb_grp_fcnal ipv4_fdb_grp_fcnal" -v IPv6 fdb groups functional -------------------------- [...] COMMAND: ip -netns me-lNzfHP nexthop add id 63 via 2001:db8:91::4 dev veth1 COMMAND: ip -netns me-lNzfHP nexthop add id 64 via 2001:db8:91::5 dev veth1 COMMAND: ip -netns me-lNzfHP nexthop add id 103 group 63/64 fdb Error: FDB nexthop group can only have fdb nexthops. TEST: Fdb Nexthop group with non-fdb nexthops [ OK ] [...] IPv4 fdb groups functional -------------------------- [...] COMMAND: ip -netns me-lNzfHP nexthop add id 14 via 172.16.1.2 dev veth1 COMMAND: ip -netns me-lNzfHP nexthop add id 15 via 172.16.1.3 dev veth1 COMMAND: ip -netns me-lNzfHP nexthop add id 103 group 14/15 fdb Error: FDB nexthop group can only have fdb nexthops. TEST: Fdb Nexthop group with non-fdb nexthops [ OK ] COMMAND: ip -netns me-lNzfHP nexthop add id 16 via 172.16.1.2 fdb COMMAND: ip -netns me-lNzfHP nexthop add id 17 via 172.16.1.3 fdb COMMAND: ip -netns me-lNzfHP nexthop add id 104 group 16/17 Error: Non FDB nexthop group cannot have fdb nexthops. TEST: Non-Fdb Nexthop group with fdb nexthops [ OK ] [...] COMMAND: ip -netns me-lNzfHP ro add 172.16.0.0/22 nhid 16 Error: Route cannot point to a fdb nexthop. TEST: Route add with fdb nexthop [ OK ] [...] Tests passed: 30 Tests failed: 0 Tests skipped: 0 Fixes: 0534c5489c11 ("selftests: net: add fdb nexthop tests") Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250921150824.149157-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-09-25selftests: mptcp: userspace pm: validate deny-join-id0 flagMatthieu Baerts (NGI0)2-3/+18
commit 24733e193a0d68f20d220e86da0362460c9aa812 upstream. The previous commit adds the MPTCP_PM_EV_FLAG_DENY_JOIN_ID0 flag. Make sure it is correctly announced by the other peer when it has been received. pm_nl_ctl will now display 'deny_join_id0:1' when monitoring the events, and when this flag was set by the other peer. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 702c2f646d42 ("mptcp: netlink: allow userspace-driven subflow establishment") Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-pm-uspace-deny_join_id0-v1-3-40171884ade8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> [ Conflict in userspace_pm.sh, because of a difference in the context, introduced by commit c66fb480a330 ("selftests: userspace pm: avoid relaunching pm events"), which is not in this version. The same lines can still be added at the same place. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-09-25selftests: mptcp: avoid spurious errors on TCP disconnectMatthieu Baerts (NGI0)1-2/+2
commit 8708c5d8b3fb3f6d5d3b9e6bfe01a505819f519a upstream. The disconnect test-case, with 'plain' TCP sockets generates spurious errors, e.g. 07 ns1 TCP -> ns1 (dead:beef:1::1:10006) MPTCP read: Connection reset by peer read: Connection reset by peer (duration 155ms) [FAIL] client exit code 3, server 3 netns ns1-FloSdv (listener) socket stat for 10006: TcpActiveOpens 2 0.0 TcpPassiveOpens 2 0.0 TcpEstabResets 2 0.0 TcpInSegs 274 0.0 TcpOutSegs 276 0.0 TcpOutRsts 3 0.0 TcpExtPruneCalled 2 0.0 TcpExtRcvPruned 1 0.0 TcpExtTCPPureAcks 104 0.0 TcpExtTCPRcvCollapsed 2 0.0 TcpExtTCPBacklogCoalesce 42 0.0 TcpExtTCPRcvCoalesce 43 0.0 TcpExtTCPChallengeACK 1 0.0 TcpExtTCPFromZeroWindowAdv 42 0.0 TcpExtTCPToZeroWindowAdv 41 0.0 TcpExtTCPWantZeroWindowAdv 13 0.0 TcpExtTCPOrigDataSent 164 0.0 TcpExtTCPDelivered 165 0.0 TcpExtTCPRcvQDrop 1 0.0 In the failing scenarios (TCP -> MPTCP), the involved sockets are actually plain TCP ones, as fallbacks for passive sockets at 2WHS time cause the MPTCP listeners to actually create 'plain' TCP sockets. Similar to commit 218cc166321f ("selftests: mptcp: avoid spurious errors on disconnect"), the root cause is in the user-space bits: the test program tries to disconnect as soon as all the pending data has been spooled, generating an RST. If such option reaches the peer before the connection has reached the closed status, the TCP socket will report an error to the user-space, as per protocol specification, causing the above failure. Note that it looks like this issue got more visible since the "tcp: receiver changes" series from commit 06baf9bfa6ca ("Merge branch 'tcp-receiver-changes'"). Address the issue by explicitly waiting for the TCP sockets (-t) to reach a closed status before performing the disconnect. More precisely, the test program now waits for plain TCP sockets or TCP subflows in addition to the MPTCP sockets that were already monitored. While at it, use 'ss' with '-n' to avoid resolving service names, which is not needed here. Fixes: 218cc166321f ("selftests: mptcp: avoid spurious errors on disconnect") Cc: stable@vger.kernel.org Suggested-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <martineau@kernel.org> Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-fix-sft-connect-v1-3-d40e77cbbf02@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-09-25selftests: mptcp: connect: catch IO errors on listen sideMatthieu Baerts (NGI0)1-3/+4
commit 14e22b43df25dbd4301351b882486ea38892ae4f upstream. IO errors were correctly printed to stderr, and propagated up to the main loop for the server side, but the returned value was ignored. As a consequence, the program for the listener side was no longer exiting with an error code in case of IO issues. Because of that, some issues might not have been seen. But very likely, most issues either had an effect on the client side, or the file transfer was not the expected one, e.g. the connection got reset before the end. Still, it is better to fix this. The main consequence of this issue is the error that was reported by the selftests: the received and sent files were different, and the MIB counters were not printed. Also, when such errors happened during the 'disconnect' tests, the program tried to continue until the timeout. Now when an IO error is detected, the program exits directly with an error. Fixes: 05be5e273c84 ("selftests: mptcp: add disconnect tests") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-fix-sft-connect-v1-2-d40e77cbbf02@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-09-25selftests: mptcp: sockopt: fix error messagesGeliang Tang1-6/+10
[ Upstream commit b86418beade11d45540a2d20c4ec1128849b6c27 ] This patch fixes several issues in the error reporting of the MPTCP sockopt selftest: 1. Fix diff not printed: The error messages for counter mismatches had the actual difference ('diff') as argument, but it was missing in the format string. Displaying it makes the debugging easier. 2. Fix variable usage: The error check for 'mptcpi_bytes_acked' incorrectly used 'ret2' (sent bytes) for both the expected value and the difference calculation. It now correctly uses 'ret' (received bytes), which is the expected value for bytes_acked. 3. Fix off-by-one in diff: The calculation for the 'mptcpi_rcv_delta' diff was 's.mptcpi_rcv_delta - ret', which is off-by-one. It has been corrected to 's.mptcpi_rcv_delta - (ret + 1)' to match the expected value in the condition above it. Fixes: 5dcff89e1455 ("selftests: mptcp: explicitly tests aggregate counters") Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-pm-uspace-deny_join_id0-v1-5-40171884ade8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-09-09selftest: net: Fix weird setsockopt() in bind_bhash.c.Kuniyuki Iwashima1-2/+2
[ Upstream commit fd2004d82d8d8faa94879e3de3096c8511728637 ] bind_bhash.c passes (SO_REUSEADDR | SO_REUSEPORT) to setsockopt(). In the asm-generic definition, the value happens to match with the bare SO_REUSEPORT, (2 | 15) == 15, but not on some arch. arch/alpha/include/uapi/asm/socket.h:18:#define SO_REUSEADDR 0x0004 arch/alpha/include/uapi/asm/socket.h:24:#define SO_REUSEPORT 0x0200 arch/mips/include/uapi/asm/socket.h:24:#define SO_REUSEADDR 0x0004 /* Allow reuse of local addresses. */ arch/mips/include/uapi/asm/socket.h:33:#define SO_REUSEPORT 0x0200 /* Allow local address and port reuse. */ arch/parisc/include/uapi/asm/socket.h:12:#define SO_REUSEADDR 0x0004 arch/parisc/include/uapi/asm/socket.h:18:#define SO_REUSEPORT 0x0200 arch/sparc/include/uapi/asm/socket.h:13:#define SO_REUSEADDR 0x0004 arch/sparc/include/uapi/asm/socket.h:20:#define SO_REUSEPORT 0x0200 include/uapi/asm-generic/socket.h:12:#define SO_REUSEADDR 2 include/uapi/asm-generic/socket.h:27:#define SO_REUSEPORT 15 Let's pass SO_REUSEPORT only. Fixes: c35ecb95c448 ("selftests/net: Add test for timing a bind request to a port with a populated bhash entry") Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250903222938.2601522-1-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-08-28selftests: mptcp: pm: check flush doesn't reset limitsMatthieu Baerts (NGI0)1-0/+1
commit 452690be7de2f91cc0de68cb9e95252875b33503 upstream. This modification is linked to the parent commit where the received ADD_ADDR limit was accidentally reset when the endpoints were flushed. To validate that, the test is now flushing endpoints after having set new limits, and before checking them. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 01cacb00b35c ("mptcp: add netlink-based PM") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250815-net-mptcp-misc-fixes-6-17-rc2-v1-3-521fe9957892@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> [ Conflicts in pm_netlink.sh, because some refactoring have been done later on: commit 3188309c8ceb ("selftests: mptcp: netlink: add 'limits' helpers") and commit c99d57d0007a ("selftests: mptcp: use pm_nl endpoint ops") are not in this version. The same operation can still be done at the same place, without using the new helper. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-15selftests: rtnetlink.sh: remove esp4_offload after testXiumei Mu1-0/+6
[ Upstream commit 5b32321fdaf3fd1a92ec726af18765e225b0ee2b ] The esp4_offload module, loaded during IPsec offload tests, should be reset to its default settings after testing. Otherwise, leaving it enabled could unintentionally affect subsequence test cases by keeping offload active. Without this fix: $ lsmod | grep offload; ./rtnetlink.sh -t kci_test_ipsec_offload ; lsmod | grep offload; PASS: ipsec_offload esp4_offload 12288 0 esp4 32768 1 esp4_offload With this fix: $ lsmod | grep offload; ./rtnetlink.sh -t kci_test_ipsec_offload ; lsmod | grep offload; PASS: ipsec_offload Fixes: 2766a11161cc ("selftests: rtnetlink: add ipsec offload API test") Signed-off-by: Xiumei Mu <xmu@redhat.com> Reviewed-by: Shannon Nelson <sln@onemain.com> Reviewed-by: Hangbin Liu <liuhangbin@gmail.com> Link: https://patch.msgid.link/6d3a1d777c4de4eb0ca94ced9e77be8d48c5b12f.1753415428.git.xmu@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-08-01selftests: mptcp: connect: also cover checksumMatthieu Baerts (NGI0)2-1/+6
commit fdf0f60a2bb02ba581d9e71d583e69dd0714a521 upstream. The checksum mode has been added a while ago, but it is only validated when manually launching mptcp_connect.sh with "-C". The different CIs were then not validating these MPTCP Connect tests with checksum enabled. To make sure they do, add a new test program executing mptcp_connect.sh with the checksum mode. Fixes: 94d66ba1d8e4 ("selftests: mptcp: enable checksum in mptcp_connect.sh") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250715-net-mptcp-sft-connect-alt-v2-2-8230ddd82454@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-01selftests: mptcp: connect: also cover alt modesMatthieu Baerts (NGI0)3-1/+12
commit 37848a456fc38c191aedfe41f662cc24db8c23d9 upstream. The "mmap" and "sendfile" alternate modes for mptcp_connect.sh/.c are available from the beginning, but only tested when mptcp_connect.sh is manually launched with "-m mmap" or "-m sendfile", not via the kselftests helpers. The MPTCP CI was manually running "mptcp_connect.sh -m mmap", but not "-m sendfile". Plus other CIs, especially the ones validating the stable releases, were not validating these alternate modes. To make sure these modes are validated by these CIs, add two new test programs executing mptcp_connect.sh with the alternate modes. Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp") Cc: stable@vger.kernel.org Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250715-net-mptcp-sft-connect-alt-v2-1-8230ddd82454@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-24selftests: net: increase inter-packet timeout in udpgro.shPaolo Abeni1-4/+4
[ Upstream commit 0e9418961f897be59b1fab6e31ae1b09a0bae902 ] The mentioned test is not very stable when running on top of debug kernel build. Increase the inter-packet timeout to allow more slack in such environments. Fixes: 3327a9c46352 ("selftests: add functionals test for UDP GRO") Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/b0370c06ddb3235debf642c17de0284b2cd3c652.1752163107.git.pabeni@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>