linux-stable.git/tools/testing/selftests/drivers/net/hw/Makefile, branch linux-rolling-stable Linux kernel stable tree selftests: drv-net: rss: validate min RSS table size 2026-02-03T01:06:00+00:00 Jakub Kicinski kuba@kernel.org 2026-01-31T22:54:53+00:00 9e3d4dae98325928f842192359521ca0a2e5408e Add a test which checks that the RSS table is at least 4x the max queue count supported by the device. The original RSS spec from Microsoft stated that the RSS indirection table should be 2 to 8 times the CPU count, presumably assuming queue per CPU. If the CPU count is not a power of two, however, a power-of-2 table 2x larger than queue count results in a 33% traffic imbalance. Validate that the indirection table is at least 4x the queue count. This lowers the imbalance to 16% which empirically appears to be more acceptable to memcache-like workloads. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260131225454.1225151-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Add a test which checks that the RSS table is at least 4x the max
queue count supported by the device. The original RSS spec from
Microsoft stated that the RSS indirection table should be 2 to 8
times the CPU count, presumably assuming queue per CPU. If the
CPU count is not a power of two, however, a power-of-2 table
2x larger than queue count results in a 33% traffic imbalance.
Validate that the indirection table is at least 4x the queue
count. This lowers the imbalance to 16% which empirically
appears to be more acceptable to memcache-like workloads.

Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260131225454.1225151-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Revert "Merge branch 'netkit-support-for-io_uring-zero-copy-and-af_xdp'" 2026-01-21T02:06:01+00:00 Jakub Kicinski kuba@kernel.org 2026-01-21T02:04:55+00:00 8766d61a1d33cb5f15bfdd6ce9832bbe1fc649c2 This reverts commit 77b9c4a438fc66e2ab004c411056b3fb71a54f2c, reversing changes made to 4515ec4ad58a37e70a9e1256c0b993958c9b7497: 931420a2fc36 ("selftests/net: Add netkit container tests") ab771c938d9a ("selftests/net: Make NetDrvContEnv support queue leasing") 6be87fbb2776 ("selftests/net: Add env for container based tests") 61d99ce3dfc2 ("selftests/net: Add bpf skb forwarding program") 920da3634194 ("netkit: Add xsk support for af_xdp applications") eef51113f8af ("netkit: Add netkit notifier to check for unregistering devices") b5ef109d22d4 ("netkit: Implement rtnl_link_ops->alloc and ndo_queue_create") b5c3fa4a0b16 ("netkit: Add single device mode for netkit") 0073d2fd679d ("xsk: Proxy pool management for leased queues") 1ecea95dd3b5 ("xsk: Extend xsk_rcv_check validation") 804bf334d08a ("net: Proxy netdev_queue_get_dma_dev for leased queues") 0caa9a8ddec3 ("net: Proxy net_mp_{open,close}_rxq for leased queues") ff8889ff9107 ("net, ethtool: Disallow leased real rxqs to be resized") 9e2103f36110 ("net: Add lease info to queue-get response") 31127deddef4 ("net: Implement netdev_nl_queue_create_doit") a5546e18f77c ("net: Add queue-create operation") The series will conflict with io_uring work, and the code needs more polish. Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
This reverts commit 77b9c4a438fc66e2ab004c411056b3fb71a54f2c, reversing
changes made to 4515ec4ad58a37e70a9e1256c0b993958c9b7497:

 931420a2fc36 ("selftests/net: Add netkit container tests")
 ab771c938d9a ("selftests/net: Make NetDrvContEnv support queue leasing")
 6be87fbb2776 ("selftests/net: Add env for container based tests")
 61d99ce3dfc2 ("selftests/net: Add bpf skb forwarding program")
 920da3634194 ("netkit: Add xsk support for af_xdp applications")
 eef51113f8af ("netkit: Add netkit notifier to check for unregistering devices")
 b5ef109d22d4 ("netkit: Implement rtnl_link_ops->alloc and ndo_queue_create")
 b5c3fa4a0b16 ("netkit: Add single device mode for netkit")
 0073d2fd679d ("xsk: Proxy pool management for leased queues")
 1ecea95dd3b5 ("xsk: Extend xsk_rcv_check validation")
 804bf334d08a ("net: Proxy netdev_queue_get_dma_dev for leased queues")
 0caa9a8ddec3 ("net: Proxy net_mp_{open,close}_rxq for leased queues")
 ff8889ff9107 ("net, ethtool: Disallow leased real rxqs to be resized")
 9e2103f36110 ("net: Add lease info to queue-get response")
 31127deddef4 ("net: Implement netdev_nl_queue_create_doit")
 a5546e18f77c ("net: Add queue-create operation")

The series will conflict with io_uring work, and the code needs more
polish.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests/net: Add netkit container tests 2026-01-20T10:58:50+00:00 David Wei dw@davidwei.uk 2026-01-15T08:26:03+00:00 931420a2fc363817c92990fa14eb1bdec024ce04 Add two tests using NetDrvContEnv. One basic test that sets up a netkit pair, with one end in a netns. Use LOCAL_PREFIX_V6 and nk_forward BPF program to ping from a remote host to the netkit in netns. Second is a selftest for netkit queue leasing, using io_uring zero copy test binary inside of a netns with netkit. This checks that memory providers can be bound against virtual queues in a netkit within a netns that are leasing from a physical netdev in the default netns. Signed-off-by: David Wei <dw@davidwei.uk> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260115082603.219152-17-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com> 
Add two tests using NetDrvContEnv. One basic test that sets up a netkit
pair, with one end in a netns. Use LOCAL_PREFIX_V6 and nk_forward BPF
program to ping from a remote host to the netkit in netns.

Second is a selftest for netkit queue leasing, using io_uring zero copy
test binary inside of a netns with netkit. This checks that memory
providers can be bound against virtual queues in a netkit within a
netns that are leasing from a physical netdev in the default netns.

Signed-off-by: David Wei <dw@davidwei.uk>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260115082603.219152-17-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS 2025-12-02T01:18:40+00:00 Carolina Jubran cjubran@nvidia.com 2025-11-30T09:19:33+00:00 a8658f7bb6504af125242bb4d4e49ca032eccf91 This makes devlink_rate_tc_bw.py present in the Makefile under the same directory. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20251130091938.4109055-2-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
This makes devlink_rate_tc_bw.py present in the Makefile under the same
directory.

Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Link: https://patch.msgid.link/20251130091938.4109055-2-cjubran@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: hw-net: toeplitz: read the RSS key directly from C 2025-11-25T02:51:40+00:00 Jakub Kicinski kuba@kernel.org 2025-11-21T04:02:57+00:00 aa91dbf3eda2977e3046d4838eadf7af4dbd47ec Now that we have YNL support for RSS accessing the RSS info from C is very easy. Instead of passing the RSS key from Python do it directly in the C code. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251121040259.3647749-4-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Now that we have YNL support for RSS accessing the RSS info from
C is very easy. Instead of passing the RSS key from Python do it
directly in the C code.

Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20251121040259.3647749-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: hw-net: auto-disable building the iouring C code 2025-11-25T02:51:40+00:00 Jakub Kicinski kuba@kernel.org 2025-11-21T04:02:55+00:00 f81171fecd0c33f442fe3aa94cff650d0069152a Looks like the liburing is not updated by distros very aggressively. Presumably because a lot of packages depend on it. I just updated to Fedora 43 and it's still on liburing 2.9. The test is 9mo old, at this stage I think this warrants handling the build failure more gracefully. Detect if iouring is recent enough and if not print a warning and exclude the C prog from build. The Python test will just fail since the binary won't exist. But it removes the major annoyance of having to update liburing from sources when developing other tests. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251121040259.3647749-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Looks like the liburing is not updated by distros very aggressively.
Presumably because a lot of packages depend on it. I just updated
to Fedora 43 and it's still on liburing 2.9. The test is 9mo old,
at this stage I think this warrants handling the build failure
more gracefully.

Detect if iouring is recent enough and if not print a warning
and exclude the C prog from build. The Python test will just
fail since the binary won't exist. But it removes the major
annoyance of having to update liburing from sources when
developing other tests.

Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20251121040259.3647749-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: drv-net: hw: convert the Toeplitz test to Python 2025-11-21T02:19:30+00:00 Jakub Kicinski kuba@kernel.org 2025-11-20T02:10:22+00:00 9cf9aa77a1f6339ac97ac4afe44939cf0974ef96 Rewrite the existing toeplitz.sh test in Python. The conversion is a lot less exact than the GRO one. We use Netlink APIs to get the device RSS and IRQ information. We expect that the device has neither RPS nor RFS configured, and set RPS up as part of the test. Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-11-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Rewrite the existing toeplitz.sh test in Python. The conversion
is a lot less exact than the GRO one. We use Netlink APIs to
get the device RSS and IRQ information. We expect that the device
has neither RPS nor RFS configured, and set RPS up as part of
the test.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20251120021024.2944527-11-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: net: relocate gro and toeplitz tests to drivers/net 2025-11-21T02:19:29+00:00 Jakub Kicinski kuba@kernel.org 2025-11-20T02:10:17+00:00 89268f7dbca1842cd38d3a4578ba7e3b6789c5ad The GRO test can run on a real device or a veth. The Toeplitz hash test can only run on a real device. Move them from net/ to drivers/net/ and drivers/net/hw/ respectively. There are two scripts which set up the environment for these tests setup_loopback.sh and setup_veth.sh. Move those scripts to net/lib. The paths to the setup files are a little ugly but they will be deleted shortly. toeplitz_client.sh is not a test in itself, but rather a helper to send traffic, so add it to TEST_FILES rather than TEST_PROGS. Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
The GRO test can run on a real device or a veth.
The Toeplitz hash test can only run on a real device.
Move them from net/ to drivers/net/ and drivers/net/hw/ respectively.

There are two scripts which set up the environment for these tests
setup_loopback.sh and setup_veth.sh. Move those scripts to net/lib.
The paths to the setup files are a little ugly but they will be
deleted shortly.

toeplitz_client.sh is not a test in itself, but rather a helper
to send traffic, so add it to TEST_FILES rather than TEST_PROGS.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20251120021024.2944527-6-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: net: unify the Makefile formats 2025-10-06T20:14:06+00:00 Jakub Kicinski kuba@kernel.org 2025-10-03T21:01:27+00:00 f07f91a36090b54076e89b46f159ea3a4b77fb2b We get a significant number of conflicts between net and net-next because of selftests Makefile changes. People tend to append new test cases at the end of the Makefile when there's no clear sort order. Sort all networking selftests Makefiles, use the following format: VAR_NAME := \ entry1 \ entry2 \ entry3 \ # end of VAR_NAME Some Makefiles are already pretty close to this. Acked-by: Antonio Quartulli <antonio@openvpn.net> Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Acked-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20251003210127.1021918-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
We get a significant number of conflicts between net and net-next
because of selftests Makefile changes. People tend to append new
test cases at the end of the Makefile when there's no clear sort
order. Sort all networking selftests Makefiles, use the following
format:

 VAR_NAME := \
	 entry1 \
	 entry2 \
	 entry3 \
 # end of VAR_NAME

Some Makefiles are already pretty close to this.

Acked-by: Antonio Quartulli <antonio@openvpn.net>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Acked-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20251003210127.1021918-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: drv-net: add HW timestamping tests 2025-09-25T01:14:22+00:00 Vadim Fedorenko vadim.fedorenko@linux.dev 2025-09-23T17:33:10+00:00 b9c8a2c5670a92f1cb3ad7d88cd8e274160b59d6 Add simple tests to validate that the driver sets up timestamping configuration according to what is reported in capabilities. For RX timestamping we allow driver to fallback to wider scope for timestamping if filter is applied. That actually means that driver can enable ptpv2-event when it reports ptpv2-l4-event is supported, but not vice versa. Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Link: https://patch.msgid.link/20250923173310.139623-5-vadim.fedorenko@linux.dev Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Add simple tests to validate that the driver sets up timestamping
configuration according to what is reported in capabilities.

For RX timestamping we allow driver to fallback to wider scope for
timestamping if filter is applied. That actually means that driver
can enable ptpv2-event when it reports ptpv2-l4-event is supported,
but not vice versa.

Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250923173310.139623-5-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>