selftests: drv-net: ncdevmem: add -n flag to skip NIC configuration

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Add a -n (skip_config) flag that causes ncdevmem to skip NIC
configuration when operating as an RX server. When -n is passed,
ncdevmem skips configuring header split, RSS, and flow steering, as well
as their teardown on exit.

This allows ksft tests to pre-configure the NIC in the host namespace
before launching ncdevmem in the guest namespace. This is needed for
netkit devmem tests where the test harness namespace has direct access
to the NIC and the ncdevmem namespace does not.

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-4-408c59b91e66@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Bobby Eshleman 2026-05-14 10:22:31 -07:00 • committed by Jakub Kicinski

parent 1abe839b34

commit ecbdf3da78

1 changed files with 34 additions and 24 deletions

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tools/testing/selftests/drivers/net/hw/ncdevmem.c

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