kernel/tools/testing/selftests/drivers/net/lib/py, branch master

Revert "Merge branch 'netkit-support-for-io_uring-zero-copy-and-af_xdp'"

2026-01-21T02:06:01Z

This reverts commit 77b9c4a438fc66e2ab004c411056b3fb71a54f2c, reversing changes made to 4515ec4ad58a37e70a9e1256c0b993958c9b7497: 931420a2fc36 ("selftests/net: Add netkit container tests") ab771c938d9a ("selftests/net: Make NetDrvContEnv support queue leasing") 6be87fbb2776 ("selftests/net: Add env for container based tests") 61d99ce3dfc2 ("selftests/net: Add bpf skb forwarding program") 920da3634194 ("netkit: Add xsk support for af_xdp applications") eef51113f8af ("netkit: Add netkit notifier to check for unregistering devices") b5ef109d22d4 ("netkit: Implement rtnl_link_ops->alloc and ndo_queue_create") b5c3fa4a0b16 ("netkit: Add single device mode for netkit") 0073d2fd679d ("xsk: Proxy pool management for leased queues") 1ecea95dd3b5 ("xsk: Extend xsk_rcv_check validation") 804bf334d08a ("net: Proxy netdev_queue_get_dma_dev for leased queues") 0caa9a8ddec3 ("net: Proxy net_mp_{open,close}_rxq for leased queues") ff8889ff9107 ("net, ethtool: Disallow leased real rxqs to be resized") 9e2103f36110 ("net: Add lease info to queue-get response") 31127deddef4 ("net: Implement netdev_nl_queue_create_doit") a5546e18f77c ("net: Add queue-create operation") The series will conflict with io_uring work, and the code needs more polish. Signed-off-by: Jakub Kicinski

selftests/net: Make NetDrvContEnv support queue leasing

2026-01-20T10:58:50Z

Add a new parameter `lease` to NetDrvContEnv that sets up queue leasing in the env. The NETIF also has some ethtool parameters changed to support memory provider tests. This is needed in NetDrvContEnv rather than individual test cases since the cleanup to restore NETIF can't be done, until the netns in the env is gone. Signed-off-by: David Wei Signed-off-by: Daniel Borkmann Acked-by: Stanislav Fomichev Reviewed-by: Nikolay Aleksandrov Link: https://patch.msgid.link/20260115082603.219152-16-daniel@iogearbox.net Signed-off-by: Paolo Abeni

selftests/net: Add env for container based tests

2026-01-20T10:58:50Z

Add an env NetDrvContEnv for container based selftests. This automates the setup of a netns, netkit pair with one inside the netns, and a BPF program that forwards skbs from the NETIF host inside the container. Currently only netkit is used, but other virtual netdevs e.g. veth can be used too. Expect netkit container datapath selftests to have a publicly routable IP prefix to assign to netkit in a container, such that packets will land on eth0. The BPF skb forward program will then forward such packets from the host netns to the container netns. Signed-off-by: David Wei Signed-off-by: Daniel Borkmann Acked-by: Stanislav Fomichev Reviewed-by: Nikolay Aleksandrov Link: https://patch.msgid.link/20260115082603.219152-15-daniel@iogearbox.net Signed-off-by: Paolo Abeni

selftests: drv-net: gro: run the test against HW GRO and LRO

2026-01-14T01:54:01Z

Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: psp: Better control the used PSP dev

2026-01-10T22:44:05Z

The PSP responder fails when zero or multiple PSP devices are detected. There's an option to select the device id to use (-d) but it's currently not used from the PSP self test. It's also hard to use because the PSP test doesn't dump the PSP devices so can't choose one. When zero devices are detected, psp_responder fails which will cause the parent test to fail as well instead of skipping PSP tests. Fix both of these problems. Change psp_responder to: - not fail when no PSP devs are detected. - get an optional -i ifindex argument instead of -d. - select the correct PSP dev from the dump corresponding to ifindex or - select the first PSP dev when -i is not given. - fail when multiple devs are found and -i is not given. - warn and continue when the requested ifindex is not found. Also plumb the ifindex from the Python test. With these, when there are no PSP devs found or the wrong one is chosen, psp_responder opens the server socket, listens for control connections normally, and leaves the skipping of the various test cases which require a PSP device (~most, but not all of them) to the parent test. This results in output like: ok 1 psp.test_case # SKIP No PSP devices found [...] ok 12 psp.dev_get_device # SKIP No PSP devices found ok 13 psp.dev_get_device_bad ok 14 psp.dev_rotate # SKIP No PSP devices found [...] Signed-off-by: Cosmin Ratiu Reviewed-by: Carolina Jubran Link: https://patch.msgid.link/20260109110851.2952906-2-cratiu@nvidia.com Signed-off-by: Jakub Kicinski

selftests: drv-net: introduce Iperf3Runner for measurement use cases

2025-12-02T01:18:41Z

GenerateTraffic was added to spin up long-running iperf3 load, mainly to drive high PPS background traffic. It was never meant to provide stable throughput numbers, and trying to repurpose it for measurement does not make sense. Introduce Iperf3Runner to allow tests to split out server/client configuration, control start/stop, and collect JSON output for analysis. This makes it possible to measure bandwidth directly when validating egress shaping. GenerateTraffic stays as the background load generator, reusing the common iperf3 helpers under the hood. Signed-off-by: Carolina Jubran Reviewed-by: Cosmin Ratiu Reviewed-by: Nimrod Oren Link: https://patch.msgid.link/20251130091938.4109055-3-cjubran@nvidia.com Signed-off-by: Jakub Kicinski

selftests: net: py: read ip link info about remote dev

2025-11-21T02:19:29Z

We're already saving the info about the local dev in env.dev for the tests, save remote dev as well. This is more symmetric, env generally provides the same info for local and remote end. While at it make sure that we reliably get the detailed info about the local dev. nsim used to read the dev info without -d. Reviewed-by: Petr Machata Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20251120021024.2944527-8-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: add test variants

2025-11-21T02:19:29Z

There's a lot of cases where we try to re-run the same code with different parameters. We currently need to either use a generator method or create a "main" case implementation which then gets called by trivial case functions: def _test(x, y, z): ... def case_int(): _test(1, 2, 3) def case_str(): _test('a', 'b', 'c') Add support for variants, similar to kselftests_harness.h and a lot of other frameworks. Variants can be added as decorator to test functions: @ksft_variants([(1, 2, 3), ('a', 'b', 'c')]) def case(x, y, z): ... ksft_run() will auto-generate case names: case.1_2_3 case.a_b_c Because the names may not always be pretty (and to avoid forcing classes to implement case-friendly __str__()) add a wrapper class KsftNamedVariant which lets the user specify the name for the variant. Note that ksft_run's args are still supported. ksft_run splices args and variant params together. Reviewed-by: Willem de Bruijn Reviewed-by: Petr Machata Link: https://patch.msgid.link/20251120021024.2944527-4-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: update remaining Python init files

2025-10-12T18:03:53Z

Convert remaining __init__ files similar to what we did in commit b615879dbfea ("selftests: drv-net: make linters happy with our imports") Signed-off-by: Jakub Kicinski Signed-off-by: Stanislav Fomichev Reviewed-by: Simon Horman Signed-off-by: David S. Miller

selftests: drv-net: make linters happy with our imports

2025-10-07T10:12:44Z

Linters are still not very happy with our __init__ files, which was pointed out in recent review (see Link). We have previously started importing things one by one to make linters happy with the test files (which import from __init__). But __init__ file itself still makes linters unhappy. To clean it up I believe we must completely remove the wildcard imports, and assign the imported modules to __all__. hds.py needs to be fixed because it seems to be importing the Python standard random from lib.net. We can't use ksft_pr() / ktap_result() in case importing from net.lib fails. Linters complain that those helpers themselves may not have been imported. Link: https://lore.kernel.org/9d215979-6c6d-4e9b-9cdd-39cff595866e@redhat.com Signed-off-by: Jakub Kicinski Link: https://patch.msgid.link/20251003164748.860042-1-kuba@kernel.org Signed-off-by: Paolo Abeni