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2025-07-17selftests: net: prevent Python from buffering the outputJakub Kicinski
Make sure Python doesn't buffer the output, otherwise for some tests we may see false positive timeouts in NIPA. NIPA thinks that a machine has hung if the test doesn't print anything for 3min. This is also nice to heave for running the tests manually, especially in vng. Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20250716205712.1787325-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.16-rc7). Conflicts: Documentation/netlink/specs/ovpn.yaml 880d43ca9aa4 ("netlink: specs: clean up spaces in brackets") af52020fc599 ("ovpn: reject unexpected netlink attributes") drivers/net/phy/phy_device.c a44312d58e78 ("net: phy: Don't register LEDs for genphy") f0f2b992d818 ("net: phy: Don't register LEDs for genphy") https://lore.kernel.org/20250710114926.7ec3a64f@kernel.org drivers/net/wireless/intel/iwlwifi/fw/regulatory.c drivers/net/wireless/intel/iwlwifi/mld/regulatory.c 5fde0fcbd760 ("wifi: iwlwifi: mask reserved bits in chan_state_active_bitmap") ea045a0de3b9 ("wifi: iwlwifi: add support for accepting raw DSM tables by firmware") net/ipv6/mcast.c ae3264a25a46 ("ipv6: mcast: Delay put pmc->idev in mld_del_delrec()") a8594c956cc9 ("ipv6: mcast: Avoid a duplicate pointer check in mld_del_delrec()") https://lore.kernel.org/8cc52891-3653-4b03-a45e-05464fe495cf@kernel.org No adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-17selftests: Add test cases for vlan_filter modification during runtimeDong Chenchen
Add test cases for vlan_filter modification during runtime, which may triger null-ptr-ref or memory leak of vlan0. Signed-off-by: Dong Chenchen <dongchenchen2@huawei.com> Link: https://patch.msgid.link/20250716034504.2285203-3-dongchenchen2@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-17Merge tag 'nf-25-07-17' of ↵Paolo Abeni
git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following batch contains Netfilter fixes for net: 1) Three patches to enhance conntrack selftests for resize and clash resolution, from Florian Westphal. 2) Expand nft_concat_range.sh selftest to improve coverage from error path, from Florian Westphal. 3) Hide clash bit to userspace from netlink dumps until there is a good reason to expose, from Florian Westphal. 4) Revert notification for device registration/unregistration for nftables basechains and flowtables, we decided to go for a better way to handle this through the nfnetlink_hook infrastructure which will come via nf-next, patch from Phil Sutter. 5) Fix crash in conntrack due to race related to SLAB_TYPESAFE_BY_RCU that results in removing a recycled object that is not yet in the hashes. Move IPS_CONFIRM setting after the object is in the hashes. From Florian Westphal. netfilter pull request 25-07-17 * tag 'nf-25-07-17' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf: netfilter: nf_conntrack: fix crash due to removal of uninitialised entry Revert "netfilter: nf_tables: Add notifications for hook changes" netfilter: nf_tables: hide clash bit from userspace selftests: netfilter: nft_concat_range.sh: send packets to empty set selftests: netfilter: conntrack_resize.sh: also use udpclash tool selftests: netfilter: add conntrack clash resolution test case selftests: netfilter: conntrack_resize.sh: extend resize test ==================== Link: https://patch.msgid.link/20250717095808.41725-1-pablo@netfilter.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-07-16selftests: drv-net: Strip '@' prefix from bpftrace map keysBreno Leitao
The '@' prefix in bpftrace map keys is specific to bpftrace and can be safely removed when processing results. This patch modifies the bpftrace utility to strip the '@' from map keys before storing them in the result dictionary, making the keys more consistent with Python conventions. Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20250714-netpoll_test-v7-2-c0220cfaa63e@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-16selftests: drv-net: add helper/wrapper for bpftraceJakub Kicinski
bpftrace is very useful for low level driver testing. perf or trace-cmd would also do for collecting data from tracepoints, but they require much more post-processing. Add a wrapper for running bpftrace and sanitizing its output. bpftrace has JSON output, which is great, but it prints loose objects and in a slightly inconvenient format. We have to read the objects line by line, and while at it return them indexed by the map name. Reviewed-by: Breno Leitao <leitao@debian.org> Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20250714-netpoll_test-v7-1-c0220cfaa63e@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-16selftests: packetdrill: correct the expected timing in tcp_rcv_big_endseqJakub Kicinski
Commit f5fda1a86884 ("selftests/net: packetdrill: add tcp_rcv_big_endseq.pkt") added this test recently, but it's failing with: # tcp_rcv_big_endseq.pkt:41: error handling packet: timing error: expected outbound packet at 1.230105 sec but happened at 1.190101 sec; tolerance 0.005046 sec # script packet: 1.230105 . 1:1(0) ack 54001 win 0 # actual packet: 1.190101 . 1:1(0) ack 54001 win 0 It's unclear why the test expects the ack to be delayed. Correct it. Link: https://patch.msgid.link/20250715142849.959444-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-16selftests: rtnetlink: fix addrlft test flakiness on power-saving systemsHangbin Liu
Jakub reported that the rtnetlink test for the preferred lifetime of an address has become quite flaky. The issue started appearing around the 6.16 merge window in May, and the test fails with: FAIL: preferred_lft addresses remaining The flakiness might be related to power-saving behavior, as address expiration is handled by a "power-efficient" workqueue. To address this, use slowwait to check more frequently whether the address still exists. This reduces the likelihood of the system entering a low-power state during the test, improving reliability. Reported-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Link: https://patch.msgid.link/20250715043459.110523-1-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests: net: increase inter-packet timeout in udpgro.shPaolo Abeni
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>
2025-07-14selftests/net: packetdrill: add tcp_rcv_toobig.pktEric Dumazet
Check that TCP receiver behavior after "tcp: stronger sk_rcvbuf checks" Too fat packet is dropped unless receive queue is empty. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711114006.480026-9-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14selftests/net: packetdrill: add tcp_ooo_rcv_mss.pktEric Dumazet
We make sure tcpi_rcv_mss and tp->scaling_ratio are correctly updated if no in-order packet has been received yet. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711114006.480026-6-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14selftests/net: packetdrill: add tcp_rcv_big_endseq.pktEric Dumazet
This test checks TCP behavior when receiving a packet beyond the window. It checks the new TcpExtBeyondWindow SNMP counter. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711114006.480026-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14Add support to set NAPI threaded for individual NAPISamiullah Khawaja
A net device has a threaded sysctl that can be used to enable threaded NAPI polling on all of the NAPI contexts under that device. Allow enabling threaded NAPI polling at individual NAPI level using netlink. Extend the netlink operation `napi-set` and allow setting the threaded attribute of a NAPI. This will enable the threaded polling on a NAPI context. Add a test in `nl_netdev.py` that verifies various cases of threaded NAPI being set at NAPI and at device level. Tested ./tools/testing/selftests/net/nl_netdev.py TAP version 13 1..7 ok 1 nl_netdev.empty_check ok 2 nl_netdev.lo_check ok 3 nl_netdev.page_pool_check ok 4 nl_netdev.napi_list_check ok 5 nl_netdev.dev_set_threaded ok 6 nl_netdev.napi_set_threaded ok 7 nl_netdev.nsim_rxq_reset_down # Totals: pass:7 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Samiullah Khawaja <skhawaja@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250710211203.3979655-1-skhawaja@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14selftests: net: add test for variable PMTU in broadcast routesOscar Maes
Added a test for variable PMTU in broadcast routes. This test uses iputils' ping and attempts to send a ping between two peers, which should result in a regular echo reply. This test will fail when the receiving peer does not receive the echo request due to a lack of packet fragmentation. Signed-off-by: Oscar Maes <oscmaes92@gmail.com> Link: https://patch.msgid.link/20250710142714.12986-2-oscmaes92@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14selftests: netfilter: nft_concat_range.sh: send packets to empty setFlorian Westphal
The selftest doesn't cover this error path: scratch = *raw_cpu_ptr(m->scratch); if (unlikely(!scratch)) { // here cover this too. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14selftests: netfilter: conntrack_resize.sh: also use udpclash toolFlorian Westphal
Previous patch added a new clash resolution test case. Also use this during conntrack resize stress test in addition to icmp ping flood. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14selftests: netfilter: add conntrack clash resolution test caseFlorian Westphal
Add a dedicated test to exercise conntrack clash resolution path. Test program emits 128 identical udp packets in parallel, then reads back replies from socat echo server. Also check (via conntrack -S) that the clash path was hit at least once. Due to the racy nature of the test its possible that despite the threaded program all packets were processed in-order or on same cpu, emit a SKIP warning in this case. Two tests are added: - one to test the simpler, non-nat case - one to exercise clash resolution where packets might have different nat transformations attached to them. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14selftests: netfilter: conntrack_resize.sh: extend resize testFlorian Westphal
Extend the resize test: - continuously dump table both via /proc and ctnetlink interfaces while table is resized in a loop. - if socat is available, send udp packets in additon to ping requests. - increase/decrease the icmp and udp timeouts while resizes are happening. This makes sure we also exercise the 'ct has expired' check that happens on conntrack lookup. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-11selftests/net: packetdrill: add --mss option to three testsEric Dumazet
Three tests are cooking GSO packets but do not provide gso_size information to the kernel, triggering this message: TCP: tun0: Driver has suspect GRO implementation, TCP performance may be compromised. Add --mss option to avoid this warning. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250710155641.3028726-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-11selftests: net: add netdev-l2addr.sh for testing L2 address functionalityToke Høiland-Jørgensen
Add a new test script to the network selftests which tests getting and setting of layer 2 addresses through netlink, including the newly added support for setting a permaddr on netdevsim devices. Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20250710-netdevsim-perm_addr-v4-2-c9db2fecf3bf@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.16-rc6-2). No conflicts. Adjacent changes: drivers/net/wireless/mediatek/mt76/mt7925/mcu.c c701574c5412 ("wifi: mt76: mt7925: fix invalid array index in ssid assignment during hw scan") b3a431fe2e39 ("wifi: mt76: mt7925: fix off by one in mt7925_mcu_hw_scan()") drivers/net/wireless/mediatek/mt76/mt7996/mac.c 62da647a2b20 ("wifi: mt76: mt7996: Add MLO support to mt7996_tx_check_aggr()") dc66a129adf1 ("wifi: mt76: add a wrapper for wcid access with validation") drivers/net/wireless/mediatek/mt76/mt7996/main.c 3dd6f67c669c ("wifi: mt76: Move RCU section in mt7996_mcu_add_rate_ctrl()") 8989d8e90f5f ("wifi: mt76: mt7996: Do not set wcid.sta to 1 in mt7996_mac_sta_event()") net/mac80211/cfg.c 58fcb1b4287c ("wifi: mac80211: reject VHT opmode for unsupported channel widths") 037dc18ac3fb ("wifi: mac80211: add support for storing station S1G capabilities") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-11selftests: drv-net: Add bpftool utilMohsin Bashir
Add bpf utility to simplify the use of bpftool for XDP tests included in this series. Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com> Link: https://patch.msgid.link/20250710184351.63797-2-mohsin.bashr@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10selftests: net: lib: fix shift count out of rangeHangbin Liu
I got the following warning when writing other tests: + handle_test_result_pass 'bond 802.3ad' '(lacp_active off)' + local 'test_name=bond 802.3ad' + shift + local 'opt_str=(lacp_active off)' + shift + log_test_result 'bond 802.3ad' '(lacp_active off)' ' OK ' + local 'test_name=bond 802.3ad' + shift + local 'opt_str=(lacp_active off)' + shift + local 'result= OK ' + shift + local retmsg= + shift /net/tools/testing/selftests/net/forwarding/../lib.sh: line 315: shift: shift count out of range This happens because an extra shift is executed even after all arguments have been consumed. Remove the last shift in log_test_result() to avoid this warning. Fixes: a923af1ceee7 ("selftests: forwarding: Convert log_test() to recognize RET values") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Link: https://patch.msgid.link/20250709091244.88395-1-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10selftests: Add IPv6 multicast route generation tests for GRE devices.Guillaume Nault
The previous patch fixes a bug that prevented the creation of the default IPv6 multicast route (ff00::/8) for some GRE devices. Now let's extend the GRE IPv6 selftests to cover this case. Also, rename check_ipv6_ll_addr() to check_ipv6_device_config() and adapt comments and script output to take into account the fact that we're not limited to link-local address generation. Signed-off-by: Guillaume Nault <gnault@redhat.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/65a89583bde3bf866a1922c2e5158e4d72c520e2.1752070620.git.gnault@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.16-rc6). No conflicts. Adjacent changes: Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml 0a12c435a1d6 ("dt-bindings: net: sun8i-emac: Add A100 EMAC compatible") b3603c0466a8 ("dt-bindings: net: sun8i-emac: Rename A523 EMAC0 to GMAC0") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-09selftests/net: packetdrill: add tcp_ooo-before-and-after-accept.pktEric Dumazet
Test how new passive flows react to ooo incoming packets. Their sk_rcvbuf can increase only after accept(). Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250707213900.1543248-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08selftest: af_unix: Add test for SO_INQ.Kuniyuki Iwashima
Let's add a simple test to check the basic functionality of SO_INQ. The test does the following: 1. Create socketpair in self->fd[] 2. Enable SO_INQ 3. Send data via self->fd[0] 4. Receive data from self->fd[1] 5. Compare the SCM_INQ cmsg with ioctl(SIOCINQ) Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250702223606.1054680-8-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02selftests: drv-net: Add test for devlink-rate traffic class bandwidth ↵Carolina Jubran
distribution This test suite validates the functionality of the devlink-rate API for traffic class (TC) bandwidth allocation. It ensures that bandwidth can be distributed between different traffic classes as configured, and verifies that explicit TC-to-queue mapping is required for the allocation to be effective. The first test (test_no_tc_mapping_bandwidth) is marked as expected failure on mlx5, since the hardware automatically enforces traffic class separation by dynamically moving queues to the correct TC scheduler, even without explicit TC-to-queue mapping configuration. Test output on mlx5: 1..2 # Created VF interface: eth5 # Created VLAN eth5.101 on eth5 with tc 3 and IP 198.51.100.2 # Created VLAN eth5.102 on eth5 with tc 4 and IP 198.51.100.10 # Set representor eth4 up and added to bridge # Bandwidth check results without TC mapping: # TC 3: 0.19 Gbits/sec # TC 4: 0.76 Gbits/sec # Total bandwidth: 0.95 Gbits/sec # TC 3 percentage: 20.0% # TC 4 percentage: 80.0% ok 1 devlink_rate_tc_bw.test_no_tc_mapping_bandwidth # XFAIL Bandwidth matched 80/20 split without TC mapping # Created VF interface: eth5 # Created VLAN eth5.101 on eth5 with tc 3 and IP 198.51.100.2 # Created VLAN eth5.102 on eth5 with tc 4 and IP 198.51.100.10 # Set representor eth4 up and added to bridge # Bandwidth check results with TC mapping: # TC 3: 0.21 Gbits/sec # TC 4: 0.78 Gbits/sec # Total bandwidth: 0.98 Gbits/sec # TC 3 percentage: 21.1% # TC 4 percentage: 78.9% # Bandwidth is distributed as 80/20 with TC mapping ok 2 devlink_rate_tc_bw.test_tc_mapping_bandwidth # Totals: pass:1 fail:0 xfail:1 xpass:0 skip:0 error:0 Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Signed-off-by: Mark Bloch <mbloch@nvidia.com> Link: https://patch.msgid.link/20250629142138.361537-9-mbloch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02selftest: net: extend msg_zerocopy test with forwardingWillem de Bruijn
Zerocopy skbs are converted to regular copy skbs when data is queued to a local socket. This happens in the existing test with a sender and receiver communicating over a veth device. Zerocopy skbs are sent without copying if egressing a device. Verify that this behavior is maintained even in the common container setup where data is forwarded over a veth to the physical device. Update msg_zerocopy.sh to 1. Have a dummy network device to simulate a physical device. 2. Have forwarding enabled between veth and dummy. 3. Add a tx-only test that sends out dummy via the forwarding path. 4. Verify the exitcode of the sender, which signals zerocopy success. As dummy drops all packets, this cannot be a TCP connection. Test the new case with unconnected UDP only. Update msg_zerocopy.c to - Accept an argument whether send with zerocopy is expected. - Return an exitcode whether behavior matched that expectation. Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250630194312.1571410-3-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-01selftests: seg6: fix instaces typo in commentsAndrea Mayer
Fix a typo: instaces -> instances The typo has been identified using codespell, and the tool does not report any additional issues in the selftests considered. Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250629171226.4988-3-andrea.mayer@uniroma2.it Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-01selftests: pp-bench: remove page_pool_put_page wrapperMina Almasry
Minor cleanup: remove the pointless looking _ wrapper around page_pool_put_page, and just do the call directly. Signed-off-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Link: https://patch.msgid.link/20250627200501.1712389-2-almasrymina@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-01selftests: pp-bench: remove unneeded linux/version.hMina Almasry
linux/version.h was used by the out-of-tree version, but not needed in the upstream one anymore. While I'm at it, sort the includes. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202506271434.Gk0epC9H-lkp@intel.com/ Signed-off-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Link: https://patch.msgid.link/20250627200501.1712389-1-almasrymina@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-30selftests: net: Add a selftest for externally validated neighbor entriesIdo Schimmel
Add test cases for externally validated neighbor entries, testing both IPv4 and IPv6. Name the file "test_neigh.sh" so that it could be possibly extended in the future with more neighbor test cases. Example output: # ./test_neigh.sh TEST: IPv4 "extern_valid" flag: Add entry [ OK ] TEST: IPv4 "extern_valid" flag: Add with an invalid state [ OK ] TEST: IPv4 "extern_valid" flag: Add with "use" flag [ OK ] TEST: IPv4 "extern_valid" flag: Replace entry [ OK ] TEST: IPv4 "extern_valid" flag: Replace entry with "managed" flag [ OK ] TEST: IPv4 "extern_valid" flag: Replace with an invalid state [ OK ] TEST: IPv4 "extern_valid" flag: Interface down [ OK ] TEST: IPv4 "extern_valid" flag: Carrier down [ OK ] TEST: IPv4 "extern_valid" flag: Transition to "reachable" state [ OK ] TEST: IPv4 "extern_valid" flag: Transition back to "stale" state [ OK ] TEST: IPv4 "extern_valid" flag: Forced garbage collection [ OK ] TEST: IPv4 "extern_valid" flag: Periodic garbage collection [ OK ] TEST: IPv6 "extern_valid" flag: Add entry [ OK ] TEST: IPv6 "extern_valid" flag: Add with an invalid state [ OK ] TEST: IPv6 "extern_valid" flag: Add with "use" flag [ OK ] TEST: IPv6 "extern_valid" flag: Replace entry [ OK ] TEST: IPv6 "extern_valid" flag: Replace entry with "managed" flag [ OK ] TEST: IPv6 "extern_valid" flag: Replace with an invalid state [ OK ] TEST: IPv6 "extern_valid" flag: Interface down [ OK ] TEST: IPv6 "extern_valid" flag: Carrier down [ OK ] TEST: IPv6 "extern_valid" flag: Transition to "reachable" state [ OK ] TEST: IPv6 "extern_valid" flag: Transition back to "stale" state [ OK ] TEST: IPv6 "extern_valid" flag: Forced garbage collection [ OK ] TEST: IPv6 "extern_valid" flag: Periodic garbage collection [ OK ] Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20250626073111.244534-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-27selftests/net: packetdrill: add tcp_dsack_mult.pktEric Dumazet
Test DSACK behavior with non contiguous ranges. Without prior fix (tcp: fix tcp_ofo_queue() to avoid including too much DUP SACK range) this would fail with: tcp_dsack_mult.pkt:37: error handling packet: bad value outbound TCP option 5 script packet: 0.100682 . 1:1(0) ack 6001 <nop,nop,sack 1001:3001 7001:8001> actual packet: 0.100679 . 1:1(0) ack 6001 win 1097 <nop,nop,sack 1001:6001 7001:8001> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: xin.guo <guoxin0309@gmail.com> Link: https://patch.msgid.link/20250626123420.1933835-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-26selftests: forwarding: lib: Split setup_wait()Petr Machata
setup_wait() takes an optional argument and then is called from the top level of the test script. That confuses shellcheck, which thinks that maybe the intention is to pass $1 of the script to the function, which is never the case. To avoid having to annotate every single new test with a SC disable, split the function in two: one that takes a mandatory argument, and one that takes no argument at all. Convert the two existing users of that optional argument, both in Spectrum resource selftest, to use the new form. Clean up vxlan_bridge_1q_mc_ul.sh to not pass a now-unused argument. Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/8e13123236fe3912ae29bc04a1528bdd8551da1f.1750847794.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.16-rc4). Conflicts: Documentation/netlink/specs/mptcp_pm.yaml 9e6dd4c256d0 ("netlink: specs: mptcp: replace underscores with dashes in names") ec362192aa9e ("netlink: specs: fix up indentation errors") https://lore.kernel.org/20250626122205.389c2cd4@canb.auug.org.au Adjacent changes: Documentation/netlink/specs/fou.yaml 791a9ed0a40d ("netlink: specs: fou: replace underscores with dashes in names") 880d43ca9aa4 ("netlink: specs: clean up spaces in brackets") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-24selftest: af_unix: Add tests for -ECONNRESET.Kuniyuki Iwashima
A new function resetpair() calls close() for the receiver and checks the return value from recv() on the initial sender side. Now resetpair() is added to each test case and some additional test cases. Note that TCP sets -ECONNRESET to the consumed OOB, but we have decided not to touch TCP MSG_OOB code in the past. Before: # RUN msg_oob.no_peek.ex_oob_ex_oob ... # msg_oob.c:236:ex_oob_ex_oob:AF_UNIX :Connection reset by peer # msg_oob.c:237:ex_oob_ex_oob:Expected: # msg_oob.c:239:ex_oob_ex_oob:Expected ret[0] (-1) == expected_len (0) # ex_oob_ex_oob: Test terminated by assertion # FAIL msg_oob.no_peek.ex_oob_ex_oob not ok 14 msg_oob.no_peek.ex_oob_ex_oob ... # FAILED: 36 / 48 tests passed. # Totals: pass:36 fail:12 xfail:0 xpass:0 skip:0 error:0 After: # RUN msg_oob.no_peek.ex_oob_ex_oob ... # msg_oob.c:244:ex_oob_ex_oob:AF_UNIX : # msg_oob.c:245:ex_oob_ex_oob:TCP :Connection reset by peer # OK msg_oob.no_peek.ex_oob_ex_oob ok 14 msg_oob.no_peek.ex_oob_ex_oob ... # PASSED: 48 / 48 tests passed. # Totals: pass:48 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250619041457.1132791-5-kuni1840@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-24af_unix: Add test for consecutive consumed OOB.Kuniyuki Iwashima
Let's add a test case where consecutive concumed OOB skbs stay at the head of the queue. Without the previous patch, ioctl(SIOCATMARK) assertion fails. Before: # RUN msg_oob.no_peek.ex_oob_ex_oob_oob ... # msg_oob.c:305:ex_oob_ex_oob_oob:Expected answ[0] (0) == oob_head (1) # ex_oob_ex_oob_oob: Test terminated by assertion # FAIL msg_oob.no_peek.ex_oob_ex_oob_oob not ok 12 msg_oob.no_peek.ex_oob_ex_oob_oob After: # RUN msg_oob.no_peek.ex_oob_ex_oob_oob ... # OK msg_oob.no_peek.ex_oob_ex_oob_oob ok 12 msg_oob.no_peek.ex_oob_ex_oob_oob Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250619041457.1132791-3-kuni1840@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-23page_pool: import Jesper's page_pool benchmarkJesper Dangaard Brouer
We frequently consult with Jesper's out-of-tree page_pool benchmark to evaluate page_pool changes. Import the benchmark into the upstream linux kernel tree so that (a) we're all running the same version, (b) pave the way for shared improvements, and (c) maybe one day integrate it with nipa, if possible. Import bench_page_pool_simple from commit 35b1716d0c30 ("Add page_bench06_walk_all"), from this repository: https://github.com/netoptimizer/prototype-kernel.git Changes done during upstreaming: - Fix checkpatch issues. - Remove the tasklet logic not needed. - Move under tools/testing - Create ksft for the benchmark. - Changed slightly how the benchmark gets build. Out of tree, time_bench is built as an independent .ko. Here it is included in bench_page_pool.ko Steps to run: ``` mkdir -p /tmp/run-pp-bench make -C ./tools/testing/selftests/net/bench make -C ./tools/testing/selftests/net/bench install INSTALL_PATH=/tmp/run-pp-bench rsync --delete -avz --progress /tmp/run-pp-bench mina@$SERVER:~/ ssh mina@$SERVER << EOF cd ~/run-pp-bench && sudo ./test_bench_page_pool.sh EOF ``` Note that by default, the Makefile will build the benchmark for the currently installed kernel in /lib/modules/$(shell uname -r)/build. To build against the current tree, do: make KDIR=$(pwd) -C ./tools/testing/selftests/net/bench Output (from Jesper): ``` sudo ./test_bench_page_pool.sh (benchmark dmesg logs snipped) Fast path results: no-softirq-page_pool01 Per elem: 23 cycles(tsc) 6.571 ns ptr_ring results: no-softirq-page_pool02 Per elem: 60 cycles(tsc) 16.862 ns slow path results: no-softirq-page_pool03 Per elem: 265 cycles(tsc) 73.739 ns ``` Output (from me): ``` sudo ./test_bench_page_pool.sh (benchmark dmesg logs snipped) Fast path results: no-softirq-page_pool01 Per elem: 11 cycles(tsc) 4.177 ns ptr_ring results: no-softirq-page_pool02 Per elem: 51 cycles(tsc) 19.117 ns slow path results: no-softirq-page_pool03 Per elem: 168 cycles(tsc) 62.469 ns ``` Results of course will vary based on hardware/kernel/configs, and some variance may be there from run to run due to some noise. Signed-off-by: Mina Almasry <almasrymina@google.com> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20250619181519.3102426-1-almasrymina@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-22selftest: add selftest for anycast notificationsYuyang Huang
This commit adds a new kernel selftest to verify RTNLGRP_IPV6_ACADDR notifications. The test works by adding/removing a dummy interface, enabling packet forwarding, and then confirming that user space can correctly receive anycast notifications. The test relies on the iproute2 version to be 6.13+. Tested by the following command: $ vng -v --user root --cpus 16 -- \ make -C tools/testing/selftests TARGETS=net TEST_PROGS=rtnetlink_notification.sh \ TEST_GEN_PROGS="" run_tests Cc: Maciej Żenczykowski <maze@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Yuyang Huang <yuyanghuang@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2025-06-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.16-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-19selftests: net: use slowwait to make sure IPv6 setup finishedHangbin Liu
Sometimes the vxlan vnifiltering test failed on slow machines due to network setup not finished. e.g. TEST: VM connectivity over vnifiltering vxlan (ipv4 default rdst) [ OK ] TEST: VM connectivity over vnifiltering vxlan (ipv6 default rdst) [FAIL] Let's use slowwait to make sure the connection is finished. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250617105101.433718-3-liuhangbin@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-19selftests: net: use slowwait to stabilize vrf_route_leaking testHangbin Liu
The vrf_route_leaking test occasionally fails due to connectivity issues in our testing environment. A sample failure message shows that the ping check fails intermittently PING 2001:db8:16:2::2 (2001:db8:16:2::2) 56 data bytes --- 2001:db8:16:2::2 ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 0ms TEST: Basic IPv6 connectivity [FAIL] This is likely due to insufficient wait time on slower machines. To address this, switch to using slowwait, which provides a longer and more reliable wait for setup completion. Before this change, the test failed 3 out of 10 times. After applying this fix, the test was run 30 times without any failure. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250617105101.433718-2-liuhangbin@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-18selftests: net: add test for passive TFO socket NAPI IDDavid Wei
Add a test that checks that the NAPI ID of a passive TFO socket is valid i.e. not zero. Signed-off-by: David Wei <dw@davidwei.uk> Link: https://patch.msgid.link/20250617212102.175711-4-dw@davidwei.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-18selftests: net: add passive TFO test binaryDavid Wei
Add a simple passive TFO server and client test binary. This will be used to test the SO_INCOMING_NAPI_ID of passive TFO accepted sockets. Signed-off-by: David Wei <dw@davidwei.uk> Link: https://patch.msgid.link/20250617212102.175711-3-dw@davidwei.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-17selftests: forwarding: Add a test for verifying VXLAN MC underlayPetr Machata
Add tests for MC-routing underlay VXLAN traffic. Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/eecd2c0fefc754182e74be8e8e65751bf5749c21.1750113335.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-17selftests: forwarding: adf_mcd_start(): Allow configuring custom interfacesPetr Machata
Tests may wish to add other interfaces to listen on. Notably locally generated traffic uses dummy interfaces. The multicast daemon needs to know about these so that it allows forming rules that involve these interfaces, and so that net.ipv4.conf.X.mc_forwarding is set for the interfaces. To that end, allow passing in a list of interfaces to configure in addition to all the physical ones. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/2e8d83297985933be4850f2b9f296b3c27110388.1750113335.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-17selftests: net: lib: Add ip_link_has_flag()Petr Machata
Add a helper to determine whether a given netdevice has a given flag. Rewrite ip_link_is_up() in terms of the new helper. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/e1eb174a411f9d24735d095984c731d1d4a5a592.1750113335.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-17selftests: forwarding: lib: Move smcrouted helpers herePetr Machata
router_multicast.sh has several helpers for work with smcrouted. Extract them to lib.sh so that other selftests can use them as well. Convert the helpers to defer in the process, because that simplifies the interface quite a bit. Therefore have router_multicast.sh invoke defer_scopes_cleanup() in its cleanup() function. Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/410411c1a81225ce6e44542289b9c3ec21e5786c.1750113335.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-17selftest: Add selftest for multicast address notificationsYuyang Huang
This commit adds a new kernel selftest to verify RTNLGRP_IPV4_MCADDR and RTNLGRP_IPV6_MCADDR notifications. The test works by adding and removing a dummy interface and then confirming that the system correctly receives join and removal notifications for the 224.0.0.1 and ff02::1 multicast addresses. The test relies on the iproute2 version to be 6.13+. Tested by the following command: $ vng -v --user root --cpus 16 -- \ make -C tools/testing/selftests TARGETS=net TEST_PROGS=rtnetlink_notification.sh \ TEST_GEN_PROGS="" run_tests Cc: Maciej Żenczykowski <maze@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Yuyang Huang <yuyanghuang@google.com> Link: https://patch.msgid.link/20250614053522.623820-1-yuyanghuang@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
generated by cgit (git 2.34.1) at 2025-09-15 22:45:05 +0000