linux/tools/testing/selftests/drivers, branch v6.16

selftests: drv-net: wait for iperf client to stop sending

2025-07-24T01:52:12Z

A few packets may still be sent out during the termination of iperf processes. These late packets cause failures in rss_ctx.py when they arrive on queues expected to be empty. Example failure observed: Check failed 2 != 0 traffic on inactive queues (context 1): [0, 0, 1, 1, 386385, 397196, 0, 0, 0, 0, ...] Check failed 4 != 0 traffic on inactive queues (context 2): [0, 0, 0, 0, 2, 2, 247152, 253013, 0, 0, ...] Check failed 2 != 0 traffic on inactive queues (context 3): [0, 0, 0, 0, 0, 0, 1, 1, 282434, 283070, ...] To avoid such failures, wait until all client sockets for the requested port are either closed or in the TIME_WAIT state. Fixes: 847aa551fa78 ("selftests: drv-net: rss_ctx: factor out send traffic and check") Signed-off-by: Nimrod Oren Reviewed-by: Gal Pressman Reviewed-by: Carolina Jubran Reviewed-by: Simon Horman Link: https://patch.msgid.link/20250722122655.3194442-1-noren@nvidia.com Signed-off-by: Jakub Kicinski

netlink: specs: ethtool: replace underscores with dashes in names

2025-06-25T22:36:27Z

We're trying to add a strict regexp for the name format in the spec. Underscores will not be allowed, dashes should be used instead. This makes no difference to C (codegen replaces special chars in names) but gives more uniform naming in Python. Fixes: 13e59344fb9d ("net: ethtool: add support for symmetric-xor RSS hash") Fixes: 46fb3ba95b93 ("ethtool: Add an interface for flashing transceiver modules' firmware") Reviewed-by: Kory Maincent Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20250624211002.3475021-4-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: netdevsim: improve lib.sh include in peer.sh

2025-06-19T01:30:51Z

Fix the peer.sh test to run from INSTALL_PATH. Signed-off-by: David Wei Link: https://patch.msgid.link/20250617212102.175711-2-dw@davidwei.uk Signed-off-by: Jakub Kicinski

selftests: drv-net: rss_ctx: Add test for ntuple rules targeting default RSS context

2025-06-12T15:15:35Z

Add test_rss_default_context_rule() to verify that ntuple rules can correctly direct traffic to the default RSS context (context 0). The test creates two ntuple rules with explicit location priorities: - A high-priority rule (loc 0) directing specific port traffic to context 0. - A low-priority rule (loc 1) directing all other TCP traffic to context 1. This validates that: 1. Rules targeting the default context function properly. 2. Traffic steering works as expected when mixing default and additional RSS contexts. The test was written by AI, and reviewed by humans. Reviewed-by: Nimrod Oren Signed-off-by: Gal Pressman Link: https://patch.msgid.link/20250612071958.1696361-3-gal@nvidia.com Signed-off-by: Jakub Kicinski

selftests: drv-net: tso: make bkg() wait for socat to quit

2025-06-05T15:01:00Z

Commit 846742f7e32f ("selftests: drv-net: add a warning for bkg + shell + terminate") added a warning for bkg() used with terminate=True. The tso test was missed as we didn't have it running anywhere in NIPA. Add exit_wait=True, to avoid: # Warning: combining shell and terminate is risky! # SIGTERM may not reach the child on zsh/ksh! getting printed twice for every variant. Fixes: 0d0f4174f6c8 ("selftests: drv-net: add a simple TSO test") Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20250604012055.891431-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: tso: fix the GRE device name

2025-06-05T15:00:55Z

The device type for IPv4 GRE is "gre" not "ipgre", unlike for IPv6 which uses "ip6gre". Not sure how I missed this when writing the test, perhaps because all HW I have access to is on an IPv6-only network. Fixes: 0d0f4174f6c8 ("selftests: drv-net: add a simple TSO test") Reviewed-by: Simon Horman Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20250604012031.891242-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: add configs for the TSO test

2025-06-05T15:00:50Z

Add missing config options for the tso.py test, specifically to make sure the kernel is built with vxlan and gre tunnels. I noticed this while adding a TSO-capable device QEMU to the CI. Previously we only run virtio tests and it doesn't report LSO stats on the QEMU we have. Fixes: 0d0f4174f6c8 ("selftests: drv-net: add a simple TSO test") Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20250604001653.853008-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

net: devmem: ncdevmem: remove unused variable

2025-05-28T02:19:36Z

This variable is unused and can be removed. Signed-off-by: Mina Almasry Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250523230524.1107879-9-almasrymina@google.com Signed-off-by: Jakub Kicinski

net: devmem: ksft: upgrade rx test to send 1K data

2025-05-28T02:19:36Z

The current test just sends "hello\nworld" and verifies that is the string received on the RX side. That is fine, but improve the test a bit by sending 1K data. The test should be improved further to send more data, but for now this should be a welcome improvement. The test will send a repeating pattern of 0x01, 0x02, ... 0x06. The ncdevmem `-v 7` flag will verify this pattern. ncdevmem will provide useful debugging info when the test fails, such as the frags received and verified fine, and which frag exactly failed, what was the expected byte pattern, and what is the actual byte pattern received. All this debug information will be useful when the test fails. Signed-off-by: Mina Almasry Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250523230524.1107879-8-almasrymina@google.com Signed-off-by: Jakub Kicinski

net: devmem: ksft: add 5 tuple FS support

2025-05-28T02:19:36Z

ncdevmem supports drivers that are limited to either 3-tuple or 5-tuple FS support, but the ksft is currently 3-tuple only. Support drivers that have 5-tuple FS supported by adding a ksft arg. Signed-off-by: Mina Almasry fix 5-tuple fix 5-tuple Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250523230524.1107879-7-almasrymina@google.com Signed-off-by: Jakub Kicinski