selftests: drivers: net: check the host and device RSS keys

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Add a selftest under tools/testing/selftests/drivers/net/rss_key.py
checking both the host RSS key (/proc/sys/net/core/netdev_rss_key) and
the RSS key, indirection table, and flow-hash layouts reported by a
device over ethtool netlink.

When invoked without NETIF, NetDrvEnv creates a 4-queue netdevsim device,
which calls netdev_rss_key_fill() and allows exercising both the host key
and the netlink RSS reporting path in a virtual machine without special
hardware. When invoked with NETIF, it checks the key and indirection
table of that interface.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260922163458.3900996-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Eric Dumazet 2026-09-22 16:34:58 +00:00 • committed by Jakub Kicinski

parent 5fd4208098

commit c8103dd8b9

2 changed files with 344 additions and 0 deletions

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tools/testing/selftests/drivers/net/Makefile

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343

tools/testing/selftests/drivers/net/rss_key.py Executable file

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