linux.git/tools/testing/selftests/drivers, branch v7.2-rc1

selftests: bonding: add a test for VLAN propagation over a bonded real device

2026-06-25T17:18:40+00:00

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 
Acked-by: Stanislav Fomichev 
Link: https://patch.msgid.link/20260624182018.2445732-5-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: so_txtime: relax variance bounds

2026-06-23T01:42:35+00:00

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 
Closes: https://lore.kernel.org/netdev/20260610170651.1b644001@kernel.org/
Signed-off-by: Willem de Bruijn 
Link: https://patch.msgid.link/20260621200137.1564776-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski

selftests/net: Add hugepage kernel config dependency for zcrx

2026-06-16T01:58:01+00:00

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 
Reviewed-by: Bobby Eshleman 
Link: https://patch.msgid.link/20260614102607.863838-5-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski

selftests/net: Add netkit io_uring ZC test for large rx_buf_len

2026-06-16T01:58:01+00:00

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 
Reviewed-by: Bobby Eshleman 
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

selftests/net: Use public NetDrvContEnv API in nk_qlease fixtures

2026-06-16T01:58:01+00:00

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 
Reviewed-by: Bobby Eshleman 
Link: https://patch.msgid.link/20260614102607.863838-3-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski

selftests/net: Move netkit lease hw setup into per-test fixtures

2026-06-16T01:58:00+00:00

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 
Reviewed-by: Bobby Eshleman 
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

io_uring/zcrx: selftests: verify rx_buf_len for large chunks

2026-06-15T19:58:18+00:00

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 
Link: https://patch.msgid.link/20260612211709.1456966-4-dtatulea@nvidia.com
Signed-off-by: Jakub Kicinski

selftests/net: psp: add dev-get, no-nsid, and cleanup tests

2026-06-13T01:31:34+00:00

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 
Link: https://patch.msgid.link/20260608233118.2694144-11-weibunny.kernel@gmail.com
Signed-off-by: Jakub Kicinski

selftests/net: psp: add cross-namespace notification tests

2026-06-13T01:31:33+00:00

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 
Link: https://patch.msgid.link/20260608233118.2694144-10-weibunny.kernel@gmail.com
Signed-off-by: Jakub Kicinski

selftests/net: psp: add dev-assoc data path test

2026-06-13T01:31:33+00:00

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 
Link: https://patch.msgid.link/20260608233118.2694144-9-weibunny.kernel@gmail.com
Signed-off-by: Jakub Kicinski