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7 daysselftests: net: Fix checksums in xdp_nativeNimrod Oren
[ Upstream commit dfc077043351a81887d1e4c9ac244e9243f3cbf2 ] 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 <cjubran@nvidia.com> Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com> Signed-off-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20260520153928.3371765-1-noren@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
7 daysselftests: mptcp: drop nanoseconds width specifierMatthieu Baerts (NGI0)
commit 01ff78e4b3d98689184c52d97f9575dfbdc3b10f upstream. 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) <matttbe@kernel.org> Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-6-701e96419f2f@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-05-23tcp: send a challenge ACK on SEG.ACK > SND.NXTJiayuan Chen
[ Upstream commit 42726ec644cbdde0035c3e0417fee8ed9547e120 ] RFC 5961 Section 5.2 validates an incoming segment's ACK value against the range [SND.UNA - MAX.SND.WND, SND.NXT] and states: "All incoming segments whose ACK value doesn't satisfy the above condition MUST be discarded and an ACK sent back." Commit 354e4aa391ed ("tcp: RFC 5961 5.2 Blind Data Injection Attack Mitigation") opted Linux into this mitigation and implements the challenge ACK on the lower side (SEG.ACK < SND.UNA - MAX.SND.WND), but the symmetric upper side (SEG.ACK > SND.NXT) still takes the pre-RFC-5961 path and silently returns SKB_DROP_REASON_TCP_ACK_UNSENT_DATA, even though RFC 793 Section 3.9 (now RFC 9293 Section 3.10.7.4) has always required: "If the ACK acknowledges something not yet sent (SEG.ACK > SND.NXT) then send an ACK, drop the segment, and return." Complete the mitigation by sending a challenge ACK on that branch, reusing the existing tcp_send_challenge_ack() path which already enforces the per-socket RFC 5961 Section 7 rate limit via __tcp_oow_rate_limited(). FLAG_NO_CHALLENGE_ACK is honoured for symmetry with the lower-edge case. Update the existing tcp_ts_recent_invalid_ack.pkt selftest, which drives this exact path, to consume the new challenge ACK. Fixes: 354e4aa391ed ("tcp: RFC 5961 5.2 Blind Data Injection Attack Mitigation") Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260422123605.320000-2-jiayuan.chen@linux.dev Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-05-23selftests: netfilter: nft_tproxy.sh: adjust to socat changesFlorian Westphal
[ Upstream commit 61119542663cac70898aef532eb57ee41ea9b477 ] Like e65d8b6f3092 ("selftests: drv-net: adjust to socat changes") we need to add shut-none for this test too. The extra 0-packet can trigger a second (unexpected) reply from the server. Fixes: 7e37e0eacd22 ("selftests: netfilter: nft_tproxy.sh: add tcp tests") Reported-by: Jakub Kicinski <kuba@kernel.org> Closes: https://lore.kernel.org/netdev/20260408152432.24b8ad0d@kernel.org/ Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Florian Westphal <fw@strlen.de> Link: https://patch.msgid.link/20260409224506.27072-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-05-14selftests: mptcp: pm: restrict 'unknown' check to pm_nl_ctlMatthieu Baerts (NGI0)
commit 53705ddfa18408f8e1f064331b6387509fa19f7f upstream. 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 <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-11-fca8091060a4@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-05-14selftests: mptcp: check output: catch cmd errorsMatthieu Baerts (NGI0)
commit 65db7b27b90e2ea8d4966935aa9a50b6a60c31ac upstream. 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 <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-10-fca8091060a4@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-04-08selftests: nft_queue.sh: add a parallel stress testFernando Fernandez Mancera
Introduce a new stress test to check for race conditions in the nfnetlink_queue subsystem, where an entry is freed while another CPU is concurrently walking the global rhashtable. To trigger this, `nf_queue.c` is extended with two new flags: * -O (out-of-order): Buffers packet IDs and flushes them in reverse. * -b (bogus verdicts): Floods the kernel with non-existent packet IDs. The bogus verdict loop forces the kernel's lookup function to perform full rhashtable bucket traversals (-ENOENT). Combined with reverse-order flushing and heavy parallel UDP/ping flooding across 8 queues, this puts the nfnetlink_queue code under pressure. Joint work with Florian Westphal. Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de> Signed-off-by: Florian Westphal <fw@strlen.de>
2026-04-07selftests: seg6: add test for dst_cache isolation in seg6 lwtunnelAndrea Mayer
Add a selftest that verifies the dst_cache in seg6 lwtunnel is not shared between the input (forwarding) and output (locally generated) paths. The test creates three namespaces (ns_src, ns_router, ns_dst) connected in a line. An SRv6 encap route on ns_router encapsulates traffic destined to cafe::1 with SID fc00::100. The SID is reachable only for forwarded traffic (from ns_src) via an ip rule matching the ingress interface (iif veth-r0 lookup 100), and blackholed in the main table. The test verifies that: 1. A packet generated locally on ns_router does not reach ns_dst with an empty cache, since the SID is blackholed; 2. A forwarded packet from ns_src populates the input cache from table 100 and reaches ns_dst; 3. A packet generated locally on ns_router still does not reach ns_dst after the input cache is populated, confirming the output path does not reuse the input cache entry. Both the forwarded and local packets are pinned to the same CPU with taskset, since dst_cache is per-cpu. Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by: Justin Iurman <justin.iurman@gmail.com> Link: https://patch.msgid.link/20260404004405.4057-3-andrea.mayer@uniroma2.it Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-07selftests: net: bridge_vlan_mcast: wait for h1 before querier checkDaniel Golle
The querier-interval test adds h1 (currently a slave of the VRF created by simple_if_init) to a temporary bridge br1 acting as an outside IGMP querier. The kernel VRF driver (drivers/net/vrf.c) calls cycle_netdev() on every slave add and remove, toggling the interface admin-down then up. Phylink takes the PHY down during the admin-down half of that cycle. Since h1 and swp1 are cable-connected, swp1 also loses its link may need several seconds to re-negotiate. Use setup_wait_dev $h1 0 which waits for h1 to return to UP state, so the test can rely on the link being back up at this point. Fixes: 4d8610ee8bd77 ("selftests: net: bridge: add vlan mcast_querier_interval tests") Signed-off-by: Daniel Golle <daniel@makrotopia.org> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Link: https://patch.msgid.link/c830f130860fd2efae08bfb9e5b25fd028e58ce5.1775424423.git.daniel@makrotopia.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-25selftests: netfilter: nft_concat_range.sh: add check for flush+reload bugFlorian Westphal
This test will fail without the preceding commit ("netfilter: nft_set_pipapo_avx2: fix match retart if found element is expired"): reject overlapping range on add 0s [ OK ] reload with flush /dev/stdin:59:32-52: Error: Could not process rule: File exists add element inet filter test { 10.0.0.29 . 10.0.2.29 } Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-03-23selftest: net: Add GC test for temporary routes with exceptions.Kuniyuki Iwashima
Without the prior commit, IPv6 GC cannot track exceptions tied to permanent routes if they were originally added as temporary routes. Let's add a test case for the issue. 1. Add temporary routes 2. Create exceptions for the temporary routes 3. Promote the routes to permanent routes 4. Check if GC can find and purge the exceptions A few notes: + At step 4, unlike other test cases, we cannot wait for $GC_WAIT_TIME. While the exceptions are always iterable via netlink (since it traverses the entire fib tree instead of tb6_gc_hlist), rt6_nh_dump_exceptions() skips expired entries. If we waited for the expiration time, we would be unable to distinguish whether the exceptions were truly purged by GC or just hidden due to being expired. + For the same reason, at step 2, we use ICMPv6 redirect message instead of Packet Too Big message. This is because MTU exceptions always have RTF_EXPIRES, and rt6_age_examine_exception() does not respect the period specified by net.ipv6.route.flush=1. + We add a neighbour entry for the redirect target with NTF_ROUTER. Without this, the exceptions would be removed at step 3 when the fib6_may_remove_gc_list() is called. Without the fix, the exceptions remain even after GC is triggered by sysctl -wq net.ipv6.route.flush=1. FAIL: Expected 0 routes, got 5 TEST: ipv6 route garbage collection (promote to permanent routes) [FAIL] With the fix, GC purges the exceptions properly. TEST: ipv6 route garbage collection (promote to permanent routes) [ OK ] Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20260320072317.2561779-4-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-11selftests: rtnetlink: add neighbour update testSabrina Dubroca
Check that protocol and flags are updated correctly for neighbour and pneigh entries. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/d28f72b5b4ff4c9ecbbbde06146a938dcc4c264a.1772894876.git.sd@queasysnail.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-05selftests: net: add test for IPv4 route with loopback IPv6 nexthopJiayuan Chen
Add a regression test for a kernel panic that occurs when an IPv4 route references an IPv6 nexthop object created on the loopback device. The test creates an IPv6 nexthop on lo, binds an IPv4 route to it, then triggers a route lookup via ping to verify the kernel does not crash. ./fib_nexthops.sh Tests passed: 249 Tests failed: 0 Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Jiayuan Chen <jiayuan.chen@shopee.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20260304113817.294966-3-jiayuan.chen@linux.dev Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-05selftests: net: tun: don't abort XFAIL casesSun Jian
The tun UDP tunnel GSO fixture contains XFAIL-marked variants intended to exercise failure paths (e.g. EMSGSIZE / "Message too long"). Using ASSERT_EQ() in these tests aborts the subtest, which prevents the harness from classifying them as XFAIL and can make the overall net: tun test fail. Switch the relevant ASSERT_EQ() checks to EXPECT_EQ() so the subtests continue running and the failures are correctly reported and accounted as XFAIL where applicable. Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com> Link: https://patch.msgid.link/20260225111451.347923-2-sun.jian.kdev@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-04selftests: mptcp: join: check removing signal+subflow endpMatthieu Baerts (NGI0)
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>
2026-03-04selftests: mptcp: join: check RM_ADDR not sent over same subflowMatthieu Baerts (NGI0)
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>
2026-03-04selftests: mptcp: more stable simult_flows testsPaolo Abeni
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>
2026-03-02selftests/net: packetdrill: restore tcp_rcv_big_endseq.pktSimon Baatz
Commit 1cc93c48b5d7 ("selftests/net: packetdrill: remove tests for tcp_rcv_*big") removed the test for the reverted commit 1d2fbaad7cd8 ("tcp: stronger sk_rcvbuf checks") but also the one for commit 9ca48d616ed7 ("tcp: do not accept packets beyond window"). Restore the test with the necessary adaptation: expect a delayed ACK instead of an immediate one, since tcp_can_ingest() does not fail anymore for the last data packet. Signed-off-by: Simon Baatz <gmbnomis@gmail.com> Link: https://patch.msgid.link/20260301-tcp_rcv_big_endseq-v1-1-86ab7415ab58@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-28selftests/net: packetdrill: remove tests for tcp_rcv_*bigJakub Kicinski
Since commit 1d2fbaad7cd8 ("tcp: stronger sk_rcvbuf checks") has been reverted we need to remove the corresponding tests. Link: https://lore.kernel.org/20260227003359.2391017-1-kuba@kernel.org Link: https://patch.msgid.link/20260227033446.2596457-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-27selftests: netfilter: nft_queue.sh: avoid flakes on debug kernelsFlorian Westphal
Jakub reports test flakes on debug kernels: FAIL: test_udp_gro_ct: Expected software segmentation to occur, had 23 and 17 This test assumes that the kernels nfnetlink_queue module sees N GSO packets, segments them into M skbs and queues them to userspace for reinjection. Hence, if M >= N, no segmentation occurred. However, its possible that this happens: - nfnetlink_queue gets GSO packet - segments that into n skbs - userspace buffer is full, kernel drops the segmented skbs -> "toqueue" counter incremented by 1, "fromqueue" is unchanged. If this happens often enough in a single run, M >= N check triggers incorrectly. To solve this, allow the nf_queue.c test program to set the FAIL_OPEN flag so that the segmented skbs bypass the queueing step in the kernel if the receive buffer is full. Also, reduce number of sending socat instances, decrease their priority and increase nice value for the nf_queue program itself to reduce the probability of overruns happening in the first place. Fixes: 59ecffa3995e ("selftests: netfilter: nft_queue.sh: add udp fraglist gro test case") Reported-by: Jakub Kicinski <kuba@kernel.org> Closes: https://lore.kernel.org/netdev/20260218184114.0b405b72@kernel.org/ Signed-off-by: Florian Westphal <fw@strlen.de> Link: https://patch.msgid.link/20260226161920.1205-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-26selftests: net: Add bridge VLAN range grouping testsDanielle Ratson
Add a new test file bridge_vlan_dump.sh with four test cases that verify VLANs with different per-VLAN options are not incorrectly grouped into ranges in the dump output. The tests verify the kernel's br_vlan_opts_eq_range() function correctly prevents VLAN range grouping when neigh_suppress, mcast_max_groups, mcast_n_groups, or mcast_enabled options differ. Each test verifies that VLANs with different option values appear as individual entries rather than ranges, and that VLANs with matching values are properly grouped together. Example output: $ ./bridge_vlan_dump.sh TEST: VLAN range grouping with neigh_suppress [ OK ] TEST: VLAN range grouping with mcast_max_groups [ OK ] TEST: VLAN range grouping with mcast_n_groups [ OK ] TEST: VLAN range grouping with mcast_enabled [ OK ] Signed-off-by: Danielle Ratson <danieller@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20260225143956.3995415-3-danieller@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-25selftests/net: packetdrill: Verify acceptance of FIN packets when RWIN is 0Simon Baatz
Add a packetdrill test that verifies we accept bare FIN packets when the advertised receive window is zero. Signed-off-by: Simon Baatz <gmbnomis@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20260224-fix_zero_wnd_fin-v2-2-a16677ea7cea@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-18selftests/net: packetdrill: add ipv4-mapped-ipv6 testsEric Dumazet
Add ipv4-mapped-ipv6 case to ksft_runner.sh before an upcoming TCP fix in this area. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260217142924.1853498-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-17selftests: tc_actions: don't dump 2MB of \0 to stdoutJakub Kicinski
Since we started running selftests in NIPA we have been seeing tc_actions.sh generate a soft lockup warning on ~20% of the runs. On the pre-netdev foundation setup it was actually a missed irq splat from the console. Now it's either that or a lockup. I initially suspected a socket locking issue since the test is exercising local loopback with act_mirred. After hours of staring at this I noticed in strace that ncat when -o $file is specified _both_ saves the output to the file and still prints it to stdout. Because the file being sent is constructed with: dd conv=sparse status=none if=/dev/zero bs=1M count=2 of=$mirred ^^^^^^^^^ the data printed is all \0. Most terminals don't display nul characters (and neither does vng output capture save them). But QEMU's serial console still has to poke them thru which is very slow and causes the lockup (if the file is >600kB). Replace the '-o $file' with '> $file'. This speeds the test up from 2m20s to 18s on debug kernels, and prevents the warnings. Fixes: ca22da2fbd69 ("act_mirred: use the backlog for nested calls to mirred ingress") Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260214035159.2119699-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-17selftests: forwarding: fix pedit tests failure with br_netfilter enabledAleksei Oladko
The tests use the tc pedit action to modify the IPv4 source address ("pedit ex munge ip src set"), but the IP header checksum is not recalculated after the modification. As a result, the modified packet fails sanity checks in br_netfilter after bridging and is dropped, which causes the test to fail. Fix this by ensuring net.bridge.bridge-nf-call-iptables is set to 0 during the test execution. This prevents the bridge from passing L2 traffic to netfilter, bypassing the checksum validation that causes the test failure. Fixes: 92ad3828944e ("selftests: forwarding: Add a test for pedit munge SIP and DIP") Fixes: 226657ba2389 ("selftests: forwarding: Add a forwarding test for pedit munge dsfield") Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260213131907.43351-4-aleksey.oladko@virtuozzo.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17selftests: forwarding: vxlan_bridge_1d_ipv6: fix test failure with ↵Aleksei Oladko
br_netfilter enabled 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>
2026-02-17selftests: forwarding: vxlan_bridge_1d: fix test failure with br_netfilter ↵Aleksei Oladko
enabled 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>
2026-02-17selftests: forwarding: bridge_mdb_max: add tests for mdb_n_entries warningNikolay Aleksandrov
Recently we were able to trigger a warning in the mdb_n_entries counting code. Add tests that exercise different ways which used to trigger that warning. Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com> Link: https://patch.msgid.link/20260213070031.1400003-3-nikolay@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-12selftests: net: lib: Fix jq parsing errorYue Haibing
The testcase failed as below: $./vlan_bridge_binding.sh ... + adf_ip_link_set_up d1 + local name=d1 + shift + ip_link_is_up d1 + ip_link_has_flag d1 UP + local name=d1 + shift + local flag=UP + shift ++ ip -j link show d1 ++ jq --arg flag UP 'any(.[].flags.[]; . == $flag)' jq: error: syntax error, unexpected '[', expecting FORMAT or QQSTRING_START (Unix shell quoting issues?) at <top-level>, line 1: any(.[].flags.[]; . == $flag) jq: 1 compile error Remove the extra dot (.) after flags array to fix this. Fixes: 4baa1d3a5080 ("selftests: net: lib: Add ip_link_has_flag()") Signed-off-by: Yue Haibing <yuehaibing@huawei.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20260211022146.190948-1-yuehaibing@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
Merge in late fixes in preparation for the net-next PR. Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-10Merge tag 'nf-next-26-02-06' of ↵Jakub Kicinski
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next Florian Westphal says: ==================== netfilter: updates for net-next The following patchset contains Netfilter updates for *net-next*: 1) Fix net-next-only use-after-free bug in nf_tables rbtree set: Expired elements cannot be released right away after unlink anymore because there is no guarantee that the binary-search blob is going to be updated. Spotted by syzkaller. 2) Fix esoteric bug in nf_queue with udp fraglist gro, broken since 6.11. Patch 3 adds extends the nfqueue selftest for this. 4) Use dedicated slab for flowtable entries, currently the -512 cache is used, which is wasteful. From Qingfang Deng. 5) Recent net-next update extended existing test for ip6ip6 tunnels, add the required /config entry. Test still passed by accident because the previous tests network setup gets re-used, so also update the test so it will fail in case the ip6ip6 tunnel interface cannot be added. 6) Fix 'nft get element mytable myset { 1.2.3.4 }' on big endian platforms, this was broken since code was added in v5.1. 7) Fix nf_tables counter reset support on 32bit platforms, where counter reset may cause huge values to appear due to wraparound. Broken since reset feature was added in v6.11. From Anders Grahn. 8-11) update nf_tables rbtree set type to detect partial operlaps. This will eventually speed up nftables userspace: at this time userspace does a netlink dump of the set content which slows down incremental updates on interval sets. From Pablo Neira Ayuso. * tag 'nf-next-26-02-06' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next: netfilter: nft_set_rbtree: validate open interval overlap netfilter: nft_set_rbtree: validate element belonging to interval netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets netfilter: nft_set_rbtree: fix bogus EEXIST with NLM_F_CREATE with null interval netfilter: nft_counter: fix reset of counters on 32bit archs netfilter: nft_set_hash: fix get operation on big endian selftests: netfilter: add IPV6_TUNNEL to config netfilter: flowtable: dedicated slab for flow entry selftests: netfilter: nft_queue.sh: add udp fraglist gro test case netfilter: nfnetlink_queue: do shared-unconfirmed check before segmentation netfilter: nft_set_rbtree: don't gc elements on insert ==================== Link: https://patch.msgid.link/20260206153048.17570-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-10selftests: hsr: Add more link fault tests for HSRFelix Maurer
Run the packet loss and reordering tests also for both HSR versions. Now they can be removed from the hsr_ping tests completely. The timeout needs to be increased because there are 15 link fault test cases now, with each of them taking 5-6sec for the test and at most 5sec for the HSR node tables to get merged and we also want some room to make the test runs stable. Signed-off-by: Felix Maurer <fmaurer@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/eb6f667d3804ce63d86f0ee3fbc0e0ac9e1a209a.1770299429.git.fmaurer@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-10selftests: hsr: Add tests for more link faults with PRPFelix Maurer
Add tests where one link has different rates of packet loss or reorders packets. PRP should still be able to recover from these link faults and show no packet loss. However, it is acceptable to receive some level of duplicate packets. This matches the current specification (IEC 62439-3:2021) of the duplicate discard algorithm that requires it to be "designed such that it never rejects a legitimate frame, while occasional acceptance of a duplicate can be tolerated." The rate of acceptable duplicates in this test is intentionally high (10%) to make the test stable, the values I observed in the worst test cases (20% loss) are around 5% duplicates. The duplicates occur because of the 10ms ping interval in the test. As blocks expire after 400ms based on the timestamp of the first received sequence number in the block, every approx. 40th will lead to a new, clean block being used where the sequence number hasn't been seen before. As this occurs on both nodes in the test (for requests and replies), we observe around 20 duplicate frames. Signed-off-by: Felix Maurer <fmaurer@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/7b36506d3a80e53786fe56526cf6046c74dfeee1.1770299429.git.fmaurer@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-10selftests: hsr: Add tests for faulty linksFelix Maurer
Add a test case that can support different types of faulty links for all protocol versions (HSRv0, HSRv1, PRPv1). It starts with a baseline with fully functional links. The first faulty case is one link being cut during the ping. This test uses a different function for ping that sends more packets in shorter intervals to stress the duplicate detection algorithms a bit more and allow for future tests with other link faults (packet loss, reordering, etc.). As the link fault tests now cover the cut link for HSR and PRP, it can be removed from the hsr_ping test. Note that the removed cut link test did not really test the fault because do_ping_long takes about 1sec while the link is only cut after a 3sec sleep. Signed-off-by: Felix Maurer <fmaurer@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/dad52276e2c349ecb96168bef7e3001bf7becc81.1770299429.git.fmaurer@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-10selftests: hsr: Check duplicates on HSR with VLANFelix Maurer
Previously the hsr_ping test only checked that all nodes in a VLAN are reachable (using do_ping). Update the test to also check that there is no packet loss and no duplicate packets by running the same tests for VLANs as without VLANs (including using do_ping_long). This also adds tests for IPv6 over VLAN. To unify the test code, the topology without VLANs now uses IP addresses from dead:beef:0::/64 to align with the 100.64.0.0/24 range for IPv4. Error messages are updated across the board to make it easier to find what actually failed. Also update the VLAN test to only run in VLAN 2, as there is no need to check if ping really works with VLAN IDs 2, 3, 4, and 5. This lowers the number of long ping tests on VLANs to keep the overall test runtime in bounds. It's still necessary to bump the test timeout a bit, though: a ping long tests takes 1sec, do_ping_tests performs 12 of them, do_link_problem_tests 6, and the VLAN tests again 12. With some buffer for setup and waiting and for two protocol versions, 90sec timeout seems reasonable. Signed-off-by: Felix Maurer <fmaurer@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/e3ded0e2547b5f720524b62fabeb96debc579697.1770299429.git.fmaurer@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-10selftests: hsr: Add ping test for PRPFelix Maurer
Add a selftest for PRP that performs a basic ping test on IPv4 and IPv6, over the plain PRP interface and a VLAN interface, similar to the existing ping test for HSR. The test first checks reachability of the other node, then checks for no loss and no duplicates. Signed-off-by: Felix Maurer <fmaurer@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/4a342189e842d7308d037da72af566729ee75834.1770299429.git.fmaurer@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-06selftests: mptcp: connect: fix maybe-uninitialize warnMatthieu Baerts (NGI0)
This warning can be seen with GCC 15.2: mptcp_connect.c: In function ‘main_loop’: mptcp_connect.c:1422:37: warning: ‘peer’ may be used uninitialized [-Wmaybe-uninitialized] 1422 | if (connect(fd, peer->ai_addr, peer->ai_addrlen)) | ~~~~^~~~~~~~~ mptcp_connect.c:1377:26: note: ‘peer’ was declared here 1377 | struct addrinfo *peer; | ^~~~ This variable is set in sock_connect_mptcp() in some conditions. If not, this helper returns an error, and the program stops. So this is a false positive, but better removing it by initialising peer to NULL. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260205-net-mptcp-misc-fixes-6-19-rc8-v2-4-c2720ce75c34@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-06selftests: netfilter: add IPV6_TUNNEL to configFlorian Westphal
The script now requires IPV6 tunnel support, enable this. This should have caught by CI, but as the config option is missing, the tunnel interface isn't added. This results in an error cascade that ends with "route change default" failure. That in turn means the "ipv6 tunnel" test re-uses the previous test setup so the "ip6ip6" test passes and script returns 0. Make sure to catch such bugs, set ret=1 if device cannot be added and delete the old default route before installing the new one. After this change, IPV6_TUNNEL=n kernel builds fail with the expected FAIL: flow offload for ns1/ns2 with IP6IP6 tunnel ... while builds with IPV6_TUNNEL=m pass as before. Fixes: 5e5180352193 ("selftests: netfilter: nft_flowtable.sh: Add IP6IP6 flowtable selftest") Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-06selftests: netfilter: nft_queue.sh: add udp fraglist gro test caseFlorian Westphal
Without the preceding patch, this fails with: FAIL: test_udp_gro_ct: Expected udp conntrack entry FAIL: test_udp_gro_ct: Expected software segmentation to occur, had 10 and 0 Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.19-rc9). No adjacent changes, conflicts: drivers/net/ethernet/spacemit/k1_emac.c 3125fc1701694 ("net: spacemit: k1-emac: fix jumbo frame support") f66086798f91f ("net: spacemit: Remove broken flow control support") https://lore.kernel.org/aYIysFIE9ooavWia@sirena.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: join: no SKIP mark for group checksMatthieu Baerts (NGI0)
When executing the last MPTCP selftests on older kernels, this output is printed: # 001 no JOIN # join Rx [SKIP] # join Tx [SKIP] # fallback [SKIP] In fact, behind each line, a few counters are checked, and likely not all of them have been skipped because the they are not available on these kernels. Instead, "new" and unsupported counters for these groups are now ignored, and [ OK ] will be printed instead of [SKIP]. Note that on the MPTCP CI, when validating the dev versions, any unsupported counter will cause the tests to fail. So this is safe not to print 'SKIP' for these group checks. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-15-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: connect cleanup TFO setupMatthieu Baerts (NGI0)
To the TFO, only the file descriptor is needed, the family is not. Also, the error can be handled the same way when 'sendto()' or 'connect()' are used. Only the printed error message is different. This avoids a bit of confusions. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-14-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: join: avoid declaring i if not usedMatthieu Baerts (NGI0)
A few loops were declaring 'i', but this variable was not used. To avoid confusions, use '_' instead: it is more explicit to mark that this variable is not needed. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-13-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: join chk_stale_nr: avoid dup statsMatthieu Baerts (NGI0)
nstat outputs are already printed when calling 'fail_test', no need to do it again. While at it, no need to use the dump_stats variable, print the extra stats directly. And use 'ip -n $ns' instead of 'ip netns exec $ns', shorter and clearer. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-12-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: join: userspace: wait for new eventsMatthieu Baerts (NGI0)
Instead of waiting for a random amount of time (1 second), wait for an event to be received on the other side. To do that, when an address is announced (userspace_pm_add_addr), the ANNOUNCED is expected. When a new subflow is created (userspace_pm_add_sf), the SUB_ESTABLISHED event is expected. With this, the tests can finish quicker. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-11-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: join: fix wait_mpj helperMatthieu Baerts (NGI0)
It looks like most of the time, this helper was simply waiting a bit more than one second: the previous MPJoin counter was often already at the expected value. So at the end, it was just checking 10 times for the MPJoin counter to change, but it was not happening. For the tests, that was time, it was just waiting longer for nothing. Instead, use 'wait_mpj' with the expected counter: in the tests, the MPJ counter can easily be predicted. While at it, stop passing the netns as argument: here the received MPJoin ACK is checked, which happens on the server side. If later on, this needs to be checked on the client side, the helper can be adapted for this case, but better avoid confusions now if it is not needed. While at it, stop using 'i' for the variable if it is not used. With this, the tests can finish quicker. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-10-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: join: wait for estab event instead of MPJMatthieu Baerts (NGI0)
'wait_mpj' was used just after having created a background connection, but before creating new subflows. So no MPJ were sent. The intention was to wait for the connection to be established, which was the same as doing a simple sleep with a "random" value. Instead, wait for an "established" event. With this, the tests can finish quicker. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-9-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-04selftests: mptcp: diag: sort all #includeMatthieu Baerts (NGI0)
This file is the only one from this directory not to have all these header inclusions sorted by type and alphabetical order. Adapt them, to ease the reading, prevent conflicts during potential future backport modifying these lines, and also to avoid having UAPI header inclusions before libc ones, see [1]. Link: https://lore.kernel.org/20260120-uapi-sockaddr-v2-1-63c319111cf6@linutronix.de Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-8-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-03selftest: net: add a test-case for encap segmentation after GROPaolo Abeni
We had a few patches in this area and no explicit coverage so far. The test case covers the scenario addressed by the previous fix; reusing the existing udpgro_fwd.sh script to leverage part of the of the virtual network setup, even if such script is possibly not a perfect fit. Note that the mentioned script already contains several shellcheck violation; this patch does not fix the existing code, just avoids adding more issues in the new one. Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Link: https://patch.msgid.link/768ca132af81e83856e34d3105b86c37e566a7ad.1770032084.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-03selftests/net: packetdrill: add TCP Accurate ECN casesChia-Yu Chang
Linux Accurate ECN test sets using ACE counters and AccECN options to cover several scenarios: Connection teardown, different ACK conditions, counter wrapping, SACK space grabbing, fallback schemes, negotiation retransmission/reorder/loss, AccECN option drop/loss, different handshake reflectors, data with marking, and different sysctl values. The packetdrill used is commit cbe405666c9c8698ac1e72f5e8ffc551216dfa56 of repo: https://github.com/minuscat/packetdrill/tree/upstream_accecn. And corresponding patches are sent to google/packetdrill email list. Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com> Co-developed-by: Ilpo Järvinen <ij@kernel.org> Signed-off-by: Ilpo Järvinen <ij@kernel.org> Co-developed-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260131222515.8485-16-chia-yu.chang@nokia-bell-labs.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>