selftests: net: add multithread server support to iou-zcrx

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Run the iou-zcrx server as N worker threads, each owning one receive
queue with its own io_uring and zero-copy receive (zcrx) ifq, so the
test can exercise multi-queue zero-copy receive.

The main thread owns the listening socket, accepts connections, and
dispatches each to the worker owning the queue it landed on by matching
SO_INCOMING_NAPI_ID against per-queue NAPI IDs.

Signed-off-by: Juanlu Herrero <juanlu@fastmail.com>
Link: https://patch.msgid.link/20260909-iou-zcrx-v7-5-6b5d48a2a922@fastmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Juanlu Herrero 2026-09-09 14:51:27 -05:00 • committed by Jakub Kicinski

parent 2801895746

commit 5d3416ebe5

2 changed files with 210 additions and 73 deletions

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5

tools/testing/selftests/drivers/net/hw/Makefile

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278

tools/testing/selftests/drivers/net/hw/iou-zcrx.c

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