Re: [PATCH net-next 0/3] selftests/xsk: stabilize timeout test behavior

On Tue, Jun 23, 2026 at 11:02:48AM +0200, Maciej Fijalkowski wrote:

On Mon, Jun 22, 2026 at 04:07:06PM -0700, Jakub Kicinski wrote:

quoted

On Wed, 17 Jun 2026 11:43:14 +0200 Maciej Fijalkowski wrote:

quoted

quoted

On Tue, Jun 16, 2026 at 11:50 PM Tushar Vyavahare
[off-list ref] wrote:  

quoted

This series improves AF_XDP selftests by making timeout handling
explicit and fixing sources of non-determinism in xsk timeout tests.

Patch 1 introduces test_spec::poll_tmout and removes implicit
dependence on RX UMEM setup state for timeout behavior.

Patch 2 fixes thread harness sequencing by attaching XDP programs
before worker startup, removing signal-based termination, and using
barrier synchronization only for dual-thread runs.

Patch 3 restores shared_umem after POLL_TXQ_FULL so test-local
configuration does not leak into subsequent cases on shared-netdev
runs.

Together these changes make timeout handling easier to follow and
improve selftest stability, especially on real NIC runs.  

net-next is closed, but in the meantime I'll review the series ASAP.

BTW, another thing about selftests I had in my mind is that are you
planning to work on this [1]?  

This one is on me. I took your changes Jason and aligned ZC batching side
to this behavior, followed by xskxceiver adjustment. I am planning to send
this today EOD, however let's see how badly internal Sashiko will kick my
ass.

Hi Maciej, do you want these applied? If they help make the tests less
flaky I think that it's fine to take them during the merge window.

Hi Jakub,

last refactor from Tushar broke BIDIRECTIONAL test case when HW is test
target, but not on veth, so let me test these changes locally and then get
back to you.

BPF CI runs xskxceiver on veth so this has not been caught. Seems my/our
focus should be to enable xskxceiver HW tests on any kind of
environment/infrastructure.

Gonna get back to you by the EOD.
Maciej

Ah I replied on other thread I guess, so let me repeat:

Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>