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2 daysselftests: drv-net: rss_ctx: Add retries to test_rss_context_overlap to ↵Zinc Lim
reduce flakes Similar to commit 690043b95c18 ("selftests: drv-net: rss: Add retries to test_rss_key_indir to reduce flakes"), implement the retry mechanism for test_rss_context_overlap. This gives the test more attempts to distribute the flow evenly, as the chance of flow skewing to one queue is high. Example failures: # Check failed 5288 < 7000 traffic on main context (1/2): [2727, 2561, 8961, 6648] not ok 1 rss_ctx.test_rss_context_overlap # Check failed 6710 < 7000 traffic on main context (2/2): [9280, 5217, 5358, 1352] not ok 1 rss_ctx.test_rss_context_overlap Ran test_rss_context_overlap and test_rss_context_overlap2 over 1,000 consecutive runs with no failures. Signed-off-by: Zinc Lim <limzhineng2@gmail.com> Link: https://patch.msgid.link/20260702164932.2832916-1-limzhineng2@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
3 daysselftests: drv-net: xdp: run with both IP versionsNimrod Oren
Parameterize test cases by IP version using @ksft_variants. Set the environment's IP version at the start of each case using a new local helper, which also handles restoring the original value via defer(). The last case is left unparameterized because it does not send traffic or exercise IP-version-specific code. While here, fix an int vs str comparison bug `if cfg.addr_ipver == 4`. Suggested-by: Jakub Kicinski <kuba@kernel.org> 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/20260702062348.2123960-3-noren@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
3 daysselftests: drv-net: allow switching env IP versionNimrod Oren
NetDrvEpEnv picks a single IP version at init time, preferring IPv6 when both are configured. Add NetDrvEpEnv.set_ipver() to reselect the IP version and recompute the derived address fields. 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/20260702062348.2123960-2-noren@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
4 daysselftests: drv-net: Add test for cross-esw rate schedulingCosmin Ratiu
Adds a Python selftest using the YNL devlink API to verify the devlink rate ops. The test requires a bond device given in the config as NETIF containing two PFs. Test setup will then create 1 VF on each PF and verify the various rate commands. ./devlink_rate_cross_esw.py TAP version 13 1..3 ok 1 devlink_rate_cross_esw.test_same_esw_parent ok 2 devlink_rate_cross_esw.test_cross_esw_parent ok 3 devlink_rate_cross_esw.test_tx_rates_on_cross_esw Tests will be skipped when the preconditions aren't met, when the devlink API is too old or when the devices don't appear to support cross-esw scheduling (detected via EOPNOTSUPP). Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Carolina Jubran <cjubran@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/20260701073254.754518-14-tariqt@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
8 daysMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
Cross-merge networking fixes after downstream PR (net-7.2-rc2). No conflicts. Adjacent changes: MAINTAINERS: 56114690ff3c ("MAINTAINERS: Update Marvell octeontx2 driver maintainers") eb56577ae9a5 ("ehea: remove the ehea driver") net/core/netpoll.c: 45f1458a8501 ("netpoll: fix a use-after-free on shutdown path") 84c0ff1efb62 ("netpoll: do not warn when the best-effort pool refill fails") Signed-off-by: Paolo Abeni <pabeni@redhat.com>
9 daysselftests: drv-net: toeplitz: cap the Rx queue countJakub Kicinski
The RPS test needs a free CPU within the first RPS_MAX_CPUS (16) cores. This is easily violated if the NIC or env allocates the IRQs to cores linearly. Cap the Rx queues at 8, we don't need more. This makes the test pass on CX7 in NIPA. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260629234354.2154541-1-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
11 daysselftests: drv-net: tso: don't touch dangerous feature bitsJakub Kicinski
query_nic_features() detects which offloads depend on tx-gso-partial by enabling everything, turning tx-gso-partial off, and seeing which active features drop out. Enabling all hw features is dangerous: we may end up enabling rx-fcs and loopback for example. For the ice driver we end up getting into problems with feature dependencies so the cleanup isn't successful either, and the test exits with rx-fcs and loopback enabled. Scope the feature probing just to segmentation bits. Fixes: 266b835e5e84 ("selftests: drv-net: tso: enable test cases based on hw_features") Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Reviewed-by: Daniel Zahka <daniel.zahka@gmail.com> Link: https://patch.msgid.link/20260629233923.2151144-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-25selftests: bonding: add a test for VLAN propagation over a bonded real deviceJakub Kicinski
Add a regression test for the VLAN notifier handling that the netdev_work deferral fixed. A VLAN's real device propagates its UP/DOWN, MTU and feature changes onto the VLANs stacked on top of it. This used to be done synchronously from the real device's notifier and deadlocked when the real device was brought up while enslaved to a bond (instance lock held across NETDEV_UP) and the VLAN on top was itself a bond member: the synchronous propagation re-entered the stack and took the same instance lock again. The test covers both halves: - that the deferred UP/DOWN, MTU and feature propagation actually lands on the VLAN (link state and MTU use an ops-locked dummy, i.e. the deferral path; features use veth, which exports vlan_features to inherit), and - that the deadlock-prone topology - a VLAN on a dummy, with the VLAN and the dummy each enslaved to a different bond - can be built without hanging. Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260624182018.2445732-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-22selftests: drv-net: so_txtime: relax variance boundsWillem de Bruijn
The net-next-hw spinners on netdev.bots.linux.dev observe failing so-txtime-py tests. A review of stdout shows most failures to be due to exceeding the 4ms grace period. All I saw were within 8ms. So increase to that. Double the bounds from 4 to 8ms. This is still is small enough to differentiate the delays programmed by the test, 10 and 20ms. Fixes: 5c6baef3885c ("selftests: drv-net: convert so_txtime to drv-net") Reported-by: Jakub Kicinski <kuba@kernel.org> Closes: https://lore.kernel.org/netdev/20260610170651.1b644001@kernel.org/ Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260621200137.1564776-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-15selftests/net: Add hugepage kernel config dependency for zcrxDaniel Borkmann
test_iou_zcrx_large_buf in drivers/net/hw/nk_qlease.py runs iou-zcrx with rx_buf_len > page size, backed by a hugepage-mapped area. Thus add to the Kconfig. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260614102607.863838-5-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-15selftests/net: Add netkit io_uring ZC test for large rx_buf_lenDaniel Borkmann
Add test_iou_zcrx_large_buf, which runs iou-zcrx with rx_buf_len > page size (-x 2) through a netkit-leased RX queue. The netkit ifindex is opaque to io_uring, but rx_page_size is honoured by the leased physical qops via netif_mp_open_rxq()'s lease redirect. Originally, I also added a BIG TCP variant on top, but dropped it here as fbnic (and the QEMU fbnic model) has no BIG TCP support to exercise it as this point. Tested against the QEMU fbnic emulation. The new test exercises the > page rx_buf_len path only when the leased NIC advertises QCFG_RX_PAGE_SIZE; otherwise it skips. For fbnic, I used Bjorn's patches locally [0]: # ./nk_qlease.py TAP version 13 1..5 ok 1 nk_qlease.test_iou_zcrx ok 2 nk_qlease.test_iou_zcrx_large_buf ok 3 nk_qlease.test_attrs ok 4 nk_qlease.test_attach_xdp_with_mp ok 5 nk_qlease.test_destroy # Totals: pass:5 fail:0 xfail:0 xpass:0 skip:0 error:0 Without those patches (aka not advertising QCFG_RX_PAGE_SIZE): # ./nk_qlease.py TAP version 13 1..5 ok 1 nk_qlease.test_iou_zcrx ok 2 nk_qlease.test_iou_zcrx_large_buf # SKIP Large chunks are not supported -95 ok 3 nk_qlease.test_attrs ok 4 nk_qlease.test_attach_xdp_with_mp ok 5 nk_qlease.test_destroy # Totals: pass:4 fail:0 xfail:0 xpass:0 skip:1 error:0 Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://lore.kernel.org/netdev/20260522113225.241337-1-bjorn@kernel.org/ [0] Link: https://patch.msgid.link/20260614102607.863838-4-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-15selftests/net: Use public NetDrvContEnv API in nk_qlease fixturesDaniel Borkmann
Expose the netkit host ifname as a public attribute nk_host_ifname (symmetric with the already-public nk_guest_ifname), rename _attach_bpf to a public attach_bpf, and add a public detach_bpf helper that encapsulates the tc-filter teardown bookkeeping. Switch the fixtures to this public API. No functional change and keeps pylint happy. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260614102607.863838-3-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-15selftests/net: Move netkit lease hw setup into per-test fixturesDaniel Borkmann
The HW counterpart of nk_qlease.py was carrying its lease setup in main() and stashing src_queue / nk_queue / nk_*_ifname on cfg, which had drawbacks called out during the review at [0]. This is the deferred half of the cleanup that landed in commit e254ffb9502c ("selftests/net: Split netdevsim tests from HW tests in nk_qlease") which was the SW counterpart of nk_qlease.py. While at it, convert the open-coded "ip netns exec" prefixes in the test bodies over to the ns= argument of cmd() / bkg(). Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://lore.kernel.org/netdev/20260408162238.16709090@kernel.org/ [0] Link: https://patch.msgid.link/20260614102607.863838-2-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-15io_uring/zcrx: selftests: verify rx_buf_len for large chunksDragos Tatulea
Check the newly added rx_buf_len page_pool field for io_uring in the existing large-chunks test after the receiver is up. Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> Link: https://patch.msgid.link/20260612211709.1456966-4-dtatulea@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: psp: add dev-get, no-nsid, and cleanup testsWei Wang
Add the following 3 tests: - _psp_dev_get_check_netkit_psp_assoc: verifies dev-get output in both host and guest namespaces, checking assoc-list, by-association flag, and nsid values - _dev_assoc_no_nsid: tests dev-assoc and dev-disassoc without the nsid attribute, verifying ifindex lookup in the caller's namespace - _psp_dev_assoc_cleanup_on_netkit_del: verifies that deleting the associated netkit interface properly cleans up the assoc-list, using a disposable netkit pair to avoid disturbing the shared environment Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-11-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: psp: add cross-namespace notification testsWei Wang
Add tests that verify PSP notifications are delivered to listeners in associated namespaces: - _key_rotation_notify_multi_ns_netkit: triggers key rotation and verifies the notification is received in both main and guest namespaces - _dev_change_notify_multi_ns_netkit: triggers dev_set and verifies the dev_change notification is received in both namespaces Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-10-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: psp: add dev-assoc data path testWei Wang
Add _assoc_check_list() test that associates nk_guest with the PSP device and verifies the assoc-list is correctly populated. Add _data_basic_send_netkit_psp_assoc() which tests PSP data send through a netkit interface associated with a PSP device. The test associates nk_guest with the PSP device, then sends PSP-encrypted traffic from the guest namespace. Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-9-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: psp: support PSP in NetDrvContEnv infrastructureWei Wang
Add infrastructure to support PSP tests across network namespaces using NetDrvContEnv with netkit pairs. This enables testing PSP device association, where a non-PSP-capable device (e.g. netkit) in a guest namespace is associated with a real PSP device in the host namespace, allowing the guest to perform PSP encryption/decryption through the host's PSP hardware. The topology is: Host NS: psp_dev_local <---> nk_host | | | | (netkit pair) | | Remote NS: psp_dev_peer Guest NS: nk_guest (responder) (PSP tests) env.py: - nk_guest_ifindex is queried after moving the device into the guest namespace, so tests can use it directly for dev-assoc psp.py: - PSP device lookup supports container environments where the PSP device is on the physical interface, not the test interface - Association helpers handle dev-assoc/dev-disassoc with defer-based cleanup to prevent state leaks on test assertion failures - main() tries NetDrvContEnv with primary_rx_redirect and falls back to NetDrvEpEnv, so existing tests continue to work without the container environment Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-8-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: rename _nk_host_ifname to nk_host_ifnameWei Wang
Rename _nk_host_ifname to nk_host_ifname in NetDrvContEnv to make it a public attribute, matching the nk_guest_ifname rename. Tests that access the host-side netkit interface name (e.g. for cleanup after deleting the netkit pair) no longer trigger pylint protected-access warnings. Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-7-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: add _find_bpf_obj() to search hw/ for BPF objectsWei Wang
Add _find_bpf_obj() helper to NetDrvContEnv that searches the test directory first, then falls back to the hw/ subdirectory. This allows tests outside drivers/net/hw/ (e.g. psp.py in drivers/net/) to find BPF objects built in the hw/ directory. Update _attach_bpf() and _attach_primary_rx_redirect_bpf() to use _find_bpf_obj() for BPF object discovery. Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-6-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests/net: psp: refactor test builders to use ksft_variantsWei Wang
Replace the manual psp_ip_ver_test_builder() and ipver_test_builder() functions with @ksft_variants decorators for data_basic_send and data_mss_adjust. This is a pure refactor with no behavior change. Signed-off-by: Wei Wang <weibunny@fb.com> Link: https://patch.msgid.link/20260608233118.2694144-5-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-12selftests: iou-zcrx: defer listen() until after zcrx setupDragos Tatulea
The server binds the queues for zero-copy after listen(). If the client does a connect() during this time it can fail with EHOSTUNREACH on a cold system. This was encountered with the mlx5 driver where binding the .ndo_queue_start() is a slow operation during which no packets can be exchanged. This change moves listen() after queue binding, when the test server is fully operational. Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Link: https://patch.msgid.link/20260611160341.3697227-2-dtatulea@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11selftests: drv-net: so_txtime: check IP versionsJakub Kicinski
This test needs more work, and it fails in non-obvious way when IPv4 connectivity is not available: # Exception| CMD[remote]: /tmp/vjquwblf/gukinuzqso_txtime -4 -c mono -t 1780939014114542914 -S None -D None a,0 -r # Exception| EXIT: -15 Explicitly check for IPv4 support to make the future triage less painful. Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20260609180803.1093428-3-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-06-11selftests: drv-net: so_txtime: remember to deploy the binariesJakub Kicinski
The test seems to be written with a single-host loopback in mind. We need to deploy the binary to remote before we run it. This is just fixing an obvious issue, but more work will be needed to make the dual-host setup work reliably. Most of the runs still fail with: FAIL: start time already passed Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20260609180803.1093428-2-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-06-10selftests: bonding: add test for lacp_strict modeLouis Scalbert
Add a test for the bonding lacp_strict mode. Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com> Acked-by: Jay Vosburgh <jv@jvosburgh.net> Link: https://patch.msgid.link/20260603150331.1919611-7-louis.scalbert@6wind.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09selftests: drv-net: gro: signal over-coalescing more reliablyJakub Kicinski
GRO test is very timing-sensitive, packets may be delayed by the network or just sent slowly. Because of this we retry each test case up to 6 times. This makes perfect sense for positive cases, in which we want to see coalescing. Negative test cases, which modify headers and expect no coalescing should have opposite treatment. We should really try 6 times and make sure that each time the test failed. This would, however, require that we annotate each test to indicate whether its positive or negative. Let's start with a simpler improvement. Do not allow retries if we detected over-coalescing. Previously the negative case would have to get lucky at least once in 6 tries to pass. Now the first failure breaks the retry loop. For background - NICs tend to ignore the contents of the TCP timestamp option, so that test case commonly fails. In NIPA having 6 attempts, however, was enough for some NICs to get multiple successful runs in a row, getting the test cases auto-classified as expected to pass, even tho the NIC does not comply with the expectations. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260607002401.212976-1-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-06-08selftests: drv-net: extend so_txtime with FQ with other clocksWillem de Bruijn
Add a variant of the existing FQ tests, but pass CLOCK_TAI rather than the native CLOCK_MONOTONIC clock id. FQ used to imply monotonic. This is no longer the case, and the inverse need not hold either. Rename $PREFIX_mono to $PREFIX_fq. Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260604194221.3319080-4-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-05selftests: drv-net: add userns devmem RX testBobby Eshleman
Add userns_devmem.py, which mirrors nk_devmem.py but places the netkit guest in a netns whose owning user_ns is non-init. ncdevmem is ran there via nsenter so the bind-rx call is issued with creds that hold CAP_NET_ADMIN only in the child user_ns. Without the preceding GENL_UNS_ADMIN_PERM patch the test fails at bind-rx with EPERM, but with the patch the transfer completes and tests pass. Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260602-nl-prov-v2-2-ad721142c641@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-02selftests: drv-net: tso: add new tests for ip6tnl, ipip, and sit tunnelsDaniel Zahka
Add new tunnel test cases for ip6tnl, ipip, and sit. ip6tnl supports ipv[46] as inner l3 header, and the other two tunnels only support a single inner l3 type. Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com> Link: https://patch.msgid.link/20260529-tso-tunnels-v1-1-3771ee9eaaa9@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-27net: sch_fq: update flow delivery time on earlier EDT packetWillem de Bruijn
When inserting an EDT packet with time before flow->time_next_packet, update the flow and possibly queue next delivery time. Reinsert the flow into the q->delayed rb-tree to position correctly and to have fq_check_throttled set wake-up at the right next time. Factor RB tree insertion out fq_flow_set_throttled to avoid open coding twice. EDT packets do not take precedence over queue rate limit. Skip this new step if a queue limit is set. EDT packets do take precedence over per-socket rate limits, as can be seen from fq_dequeue reading sk_pacing_rate if !skb->tstamp. With this change the so_txtime selftest sends packets in the expected order. Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260526134109.2624493-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-19selftests: net: test PPPoE packets in gro.shQingfang Deng
Add PPPoE test-cases to the GRO selftest. Only run a subset of common_tests to avoid changing the hardcoded L3 offsets everywhere. Add a new "pppoe_sid" test case to verify that packets with different PPPoE session IDs are correctly identified as separate flows and not coalesced. Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev> Link: https://patch.msgid.link/20260513013400.7467-2-qingfang.deng@linux.dev Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-05-18selftests: drv-net: add netkit devmem testsBobby Eshleman
Add nk_devmem.py with four tests for TCP devmem through a netkit device. These tests are just duplicates of the original devmem tests, with some adjusted parameters such as telling ncdevmem to avoid device setup (since it only has access to netkit, not a phys device). Each test uses NetDrvContEnv with primary_rx_redirect=True to set up the BPF redirect program on the primary netkit interface, then calls a shared run_*() helper which probes for devmem support and configures the NIC (HDS, RSS, queue lease) before driving the test. NIC state is restored per-test via defer() callbacks registered inside the helper. Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-8-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-18selftests: drv-net: add primary_rx_redirect support to NetDrvContEnvBobby Eshleman
When sending from a namespace that has access to a netkit device with a leased queue, the nk primary in the host namespace needs to redirect its RX to the physical device. This patch adds that redirection bpf program and teaches the harness to install it. Add primary_rx_redirect=False parameter to NetDrvContEnv.__init__(). When enabled, _attach_primary_rx_redirect_bpf() attaches a new BPF TC program (nk_primary_rx_redirect.bpf.c) to the primary (host-side) netkit interface. The program redirects non-ICMPv6 IPv6 packets to the physical NIC via bpf_redirect_neigh(), with the physical ifindex configured via the .bss map. ICMPv6 is left on the host's netkit primary so IPv6 neighbor discovery still work locally. Extract _find_bss_map_id() from _attach_bpf() into a reusable helper so other BPF attachment methods can use it. Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-7-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-18selftests: drv-net: refactor devmem command builders into lib moduleBobby Eshleman
Adding netkit-based devmem tests is a straight-forward copy of devmem test commands plus some args for the nk cases, so this patch breaks out these command builders into helpers used by both. Though we tried to avoid libraries to avoid increasing the barrier of entry/complexity (see selftests/drivers/net/README.md, section "Avoid libraries and frameworks"), factoring out these functions seemed like the lesser of two evils in this case of using the same commands, just with slightly different args per environment. I experimented with just having all of the tests in the same file to avoid having helpers in a library file, but because ksft_run() is limited to a single call per file, and the new tests will require different environments (NetDrvContEnv/NetDrvEpEnv), it would have been necessary to have each test set up its own environment instead of sharing one for the entire ksft_run() run. This came at the cost of ballooning the test time (from under 5s to 30s on my test system), so to strike a balance these tests were placed in separate files so they could keep a shared environment across a single ksft_run() run shared across all tests using the same env type (introduced in subsequent patches). The helpers work transparently with both plain and netkit environments by inspecting cfg for netkit-specific attributes (netns, nk_queue, etc...). Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-6-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-18selftests: drv-net: make attr _nk_guest_ifname publicBobby Eshleman
Subsequent patches will use the _nk_guest_ifname as a public attr for setting up devmem. Rename to nk_guest_ifname to avoid angering the linter about the '_' prefix being used for a non-private attr. Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-5-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-18selftests: drv-net: ncdevmem: add -n flag to skip NIC configurationBobby Eshleman
Add a -n (skip_config) flag that causes ncdevmem to skip NIC configuration when operating as an RX server. When -n is passed, ncdevmem skips configuring header split, RSS, and flow steering, as well as their teardown on exit. This allows ksft tests to pre-configure the NIC in the host namespace before launching ncdevmem in the guest namespace. This is needed for netkit devmem tests where the test harness namespace has direct access to the NIC and the ncdevmem namespace does not. Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-4-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-7.1-rc4). No conflicts, or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-12selftests: drv-net: cope with slow env in so_txtime.py testWillem de Bruijn
This test was converted from shell script to drv-net test. The new version is flaky in dbg builds on the netdev.bots dashboard. The previous shell script had more protections to avoid these. Added in commit a7ee79b9c455 ("selftests: net: cope with slow env in so_txtime.sh test"). Add the same overall protection: - Suppress so_txtime process failure if KSFT_MACHINE_SLOW Also relax two timeouts to reduce the number of process failures themselves - Increase SO_RCVTIMEO to 2 seconds - Increase process start-up stabilization to 2 seconds Delays were experimentally arrived at while running with vng built with kernel/configs/debug.config Fixes: 5c6baef3885c ("selftests: drv-net: convert so_txtime to drv-net") Reported-by: Jakub Kicinski <kuba@kernel.org> Closes: https://lore.kernel.org/netdev/20260510174219.74aeee6d@kernel.org/ Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260511222138.2045551-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-12selftests: drv-net: add shaper test for duplicate leavesJakub Kicinski
Add test exercising duplicate leaves. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20260510192904.3987113-5-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-05-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-7.1-rc3). Conflicts: net/ipv4/igmp.c 726fa7da2d8c ("ipv4: igmp: get rid of IGMPV3_{QQIC,MRC} and simplify calculation") c6bebaa744f7 ("ipv4: igmp: annotate data-races in igmp_heard_query()") https://lore.kernel.org/a7365e4873340f7a5e30411207de3bf9@kernel.org Adjacent changes: net/psp/psp_main.c 30cb24f97d44 ("psp: strip variable-length PSP header in psp_dev_rcv()") c2b22277ad89 ("psp: validate IPv4 header fields in psp_dev_rcv()") net/sched/sch_fq_codel.c f83e07b29246 ("net/sched: sch_fq_codel: annotate data-races from fq_codel_dump_class_stats()") 3f3aa77ff1c8 ("net/sched: add qstats_cpu_drop_inc() helper") net/wireless/pmsr.c 0f3c0a197309 ("wifi: nl80211: fix NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST usage") 410aa47fd9d3 ("wifi: cfg80211: allow suppressing FTM result reporting for PD requests") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06selftests: drv-net: fix sort order of makefile and configJakub Kicinski
Recent changes added configs and tests in the wrong spot. Link: https://lore.kernel.org/20260506170435.34984dfc@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06Merge tag 'ipsec-2026-05-05' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2026-05-05 1. Fix an IPv6 encapsulation error path that leaked route references when UDPv6 ESP decapsulation resolved to an error route. From Yilin Zhu. 2. Fix AH with ESN on async crypto paths by accounting for the extra high-order sequence number when reconstructing the temporary authentication layout in the completion callbacks. From Michael Bomarito. 3. Fix XFRM output so it does not overwrite already-correct inner header pointers when a tunnel layer such as VXLAN has already saved them. The fix comes with new selftests. From Cosmin Ratiu. 4. Add the missing native payload size entry for XFRM_MSG_MAPPING in the compat translation path. From Ruijie Li. 5. Harden __xfrm_state_delete() against repeated or inconsistent unhashing of state list nodes by keying the removal on actual list membership and using delete-and-init helpers. From Michal Kosiorek. 6. Prevent ESP from decrypting shared splice-backed skb fragments in place by marking UDP splice frags as shared and forcing copy-on-write in ESP input when needed. From Kuan-Ting Chen. * tag 'ipsec-2026-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec: xfrm: esp: avoid in-place decrypt on shared skb frags xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete xfrm: provide message size for XFRM_MSG_MAPPING xfrm: Don't clobber inner headers when already set tools/selftests: Add a VXLAN+IPsec traffic test tools/selftests: Use a sensible timeout value for iperf3 client xfrm: ah: account for ESN high bits in async callbacks ipv6: xfrm6: release dst on error in xfrm6_rcv_encap() ==================== Link: https://patch.msgid.link/20260505132326.1362733-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-05selftests: drv-net: convert so_txtime to drv-netWillem de Bruijn
In preparation for extending to pacing hardware offload, convert the so_txtime.sh test to a drv-net test that can be run against netdevsim and real hardware. Also update so_txtime.c to not exit on first failure, but run to completion and report exit code there. This helps with debugging unexpected results, especially when processing multiple packets, as happens in the "reverse_order" testcase. Signed-off-by: Willem de Bruijn <willemb@google.com> ---- v6 -> v7 - update test to use new argument expect_fail - v6 received Reviewed-by, but dropped due to above (minor) change v5 -> v6 - fix order in tools/testing/selftests/drivers/net/config v4 -> v5 - move qdisc setup/restore into each test - add tc to utils.py (separate patch) - test expected failure (separate patch) - fix pylint - convert fail to pass for timing errors if KSFT_MACHINE_SLOW (cmd does not special case KSFT_SKIP process returncode yet) Responses to sashiko review - The test converts per packet failure to errors, to continue testing other packets, but other error() cases are not in scope. - The test starts sender and receiver at an absolute future time, like the original test. This assumes ~msec scale sync'ed clocks. - The tc qdisc replace command works fine with noqueue. Tested manually. v3 -> v4 - restore original qdisc after test - drop unnecessary underscore in tap test names v2 -> v3 - Makefile: so_txtime from YNL_GEN_FILES to TEST_GEN_FILES (Sashiko, NIPA) v1 -> v2 - move so_txtime.c for net/lib to drivers/net (Jakub) - fix drivers/net/config order (Jakub) - detect passing when failure is expected (Jakub, Sashiko) - pass pylint --disable=R (Jakub) - only call ksft_run once (Jakub) - do not sleep if waiting time is negative (Sashiko) - add \n when converting error() to fprintf() (Sashiko) - 4 space indentation, instead of 2 space - increase sync delay from 100 to 200ms, to fix rare vng flakes Link: https://patch.msgid.link/20260504174056.565319-4-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-05selftests: net: py: add tc utilityWillem de Bruijn
Add a wrapper similar to existing ip, ethtool, ... commands. Tc takes a slightly different syntax. Account for that. The first user is the next patch in this series, converting so_txtime to drv-net. Pacing offload is supported by selected qdiscs only. Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260504174056.565319-3-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-01selftests: drv-net: Enable ntuple-filters if supportedDimitri Daskalakis
Certain devices which support ntuple-filters do not enable the feature by default. The existing tests will skip (if they check for the feature), or fail if they blindly attempt to install rules. Therefore, attempt to turn on ntuple-filters if the device supports them. Signed-off-by: Dimitri Daskalakis <daskald@meta.com> Reviewed-by: Joe Damato <joe@dama.to> Link: https://patch.msgid.link/20260430165217.3700469-1-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-7.1-rc2). No conflicts, or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-29selftests: drv-net: rss: add case for field config on RSS contextJakub Kicinski
We had some issues with a suspected traffic imbalance on an RSS context. Make sure the tests cover the RXFH field selection vs additional contexts. Tested-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Link: https://patch.msgid.link/20260428203624.1224387-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-29selftests: drv-net: clarify linters and frameworks in READMEJakub Kicinski
Minor clarifications in the README: - call out what linters we expect to be clean - make it clear that by "frameworks" we mean code under lib/ not just factoring code out in the same file Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-28tools/selftests: Add a VXLAN+IPsec traffic testCosmin Ratiu
There are VXLAN tests and IPsec tests, but there is no test that combines the two protocols and exercises the tunnel-over-ipsec code paths. Fix that by adding a traffic test with VXLAN and IPsec using crypto offload. This is runnable on HW which supports ESP offload (so no nsim unfortunately). Traffic is done with iperf3 and the test validates that there are no packet drops and iperf3 can get to at least 100 Mbps (a very conservative value on today's crypto offload HW, as it can typically reach multi-Gbps rates). Ran right now, the test fails due to a recently exposed bug in xfrm, which will be fixed in the next patch: # ./tools/testing/selftests/drivers/net/hw/ipsec_vxlan.py TAP version 13 1..4 # Check| At ./tools/testing/selftests/drivers/net/hw/ipsec_vxlan.py, # line 161, in test_vxlan_ipsec_crypto_offload: # Check| ksft_eq(drops_after - drops_before, 0, # Check failed 189 != 0 TX drops during VXLAN+IPsec # Check| At ./tools/testing/selftests/drivers/net/hw/ipsec_vxlan.py, # line 163, in test_vxlan_ipsec_crypto_offload: # Check| ksft_ge(bw_gbps, 0.1, # Check failed 0.0015058278404812596 < 0.1 Minimum 100Mbps over # VXLAN+IPsec not ok 1 ipsec_vxlan.test_vxlan_ipsec_crypto_offload.outer_v4_inner_v4 ... Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2026-04-28tools/selftests: Use a sensible timeout value for iperf3 clientCosmin Ratiu
The default timeout of cmd() is 5 seconds and Iperf3Runner requests the iperf3 client to run for 10 seconds, which clearly doesn't work since commit [1] enforced the timeout parameter. Use a value derived from duration as timeout (+5 seconds for startup/teardown/various other overhead). [1] commit f0bd19316663 ("selftests: net: fix timeout passed as positional argument to communicate()") Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
generated by cgit v1.2.3 (git 2.39.1) at 2026-07-11 14:09:16 +0000