[PATCH net-next v4 0/6] selftests: net: multithreaded multiqueue iou-zcrx

[Juanlu Herrero <juanlu@fastmail.com>]

Extend the iou-zcrx selftest to exercise multi-queue zero-copy receive. The
server can now run as N worker threads (-t <n>), each owning a receive queue,
io_uring and zcrx ifq, with each connection dispatched to the worker owning the
queue it landed on. A new rss_multiqueue variant drives traffic across a
multi-queue RSS context; the earlier patches are prep fixes and a refactor.

Changes since v3:
 - size the io_uring CQ to the zcrx area buffer count; the default could
   overflow and abort a recv with -ENOSPC under multishot load
 - Makefile conditional/list cleanup (Jakub)
 - drop the anonymous scope blocks in run_server() (Jakub)
 - docstrings for the new Python helpers (Jakub)

v3: https://lore.kernel.org/netdev/20260722203950.58550-1-juanlu@fastmail.com/
v2: https://lore.kernel.org/netdev/cover.1776444379.git.juanlu@fastmail.com/
v1: https://lore.kernel.org/netdev/20260408163816.2760-1-juanlu@fastmail.com/

Juanlu Herrero (6):
  selftests: net: fix get_refill_ring_size() to use its local variable
  selftests: net: remove unused variable in process_recvzc()
  selftests: net: refactor server state into struct thread_ctx
  selftests: net: add multithread client support to iou-zcrx
  selftests: net: add multithread server support to iou-zcrx
  selftests: net: add rss_multiqueue test variant to iou-zcrx

 .../testing/selftests/drivers/net/hw/Makefile |   7 +-
 .../selftests/drivers/net/hw/iou-zcrx.c       | 437 +++++++++++++-----
 .../selftests/drivers/net/hw/iou-zcrx.py      |  50 +-
 3 files changed, 366 insertions(+), 128 deletions(-)


base-commit: 2bb54b49e9d522f54dc9c0fe10ba40fbc56041c8
-- 
2.53.0-Meta