linux-stable.git/tools/testing/selftests/drivers/net/lib, branch v6.15

selftests: drv-net: replace the rpath helper with Path objects

2025-03-31T23:44:25+00:00

The single letter + "path" helpers do not have many fans (see Link).
Use a Path object with a better name. test_dir is the replacement
for rpath(), net_lib_dir is a new path of the $ksft/net/lib directory.

The Path() class overloads the "/" operator and can be cast to string
automatically, so to get a path to a file tests can do:

    path = env.test_dir / "binary"

Link: https://lore.kernel.org/CA+FuTSemTNVZ5MxXkq8T9P=DYm=nSXcJnL7CJBPZNAT_9UFisQ@mail.gmail.com
Reviewed-by: Willem de Bruijn 
Link: https://patch.msgid.link/20250327222315.1098596-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: add tests for napi IRQ affinity notifiers

2025-02-27T03:51:38+00:00

Add tests to check that the napi retained the IRQ after down/up,
multiple changes in the number of rx queues and after
attaching/releasing XDP program.

Tested on ice and idpf:

   # NETIF= tools/testing/selftests/drivers/net/hw/irq.py
    KTAP version 1
    1..4
    ok 1 irq.check_irqs_reported
    ok 2 irq.check_reconfig_queues
    ok 3 irq.check_reconfig_xdp
    ok 4 irq.check_down
    # Totals: pass:4 fail:0 xfail:0 xpass:0 skip:0 error:0

Tested-by: Ahmed Zaki 
Link: https://patch.msgid.link/20250224232228.990783-7-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski

selftests: drv-net: store addresses in dict indexed by ipver

2025-02-20T03:08:50+00:00

Looks like more and more tests want to iterate over IP version,
run the same test over ipv4 and ipv6. The current naming of
members in the env class makes it a bit awkward, we have
separate members for ipv4 and ipv6 parameters.

Store the parameters inside dicts, so that tests can easily
index them with ip version.

Reviewed-by: Willem de Bruijn 
Link: https://patch.msgid.link/20250218225426.77726-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: get detailed interface info

2025-02-20T03:08:50+00:00

We already record output of ip link for NETIF in env for easy access.
Record the detailed version. TSO test will want to know the max tso size.

Reviewed-by: Willem de Bruijn 
Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/20250218225426.77726-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: resolve remote interface name

2025-02-20T03:08:49+00:00

Find out and record in env the name of the interface which remote host
will use for the IP address provided via config.

Interface name is useful for mausezahn and for setting up tunnels.

Reviewed-by: Willem de Bruijn 
Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/20250218225426.77726-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: add helper for path resolution

2025-02-11T03:10:10+00:00

Refering to C binaries from Python code is going to be a common
need. Add a helper to convert from path in relation to the test.
Meaning, if the test is in the same directory as the binary, the
call would be simply: cfg.rpath("binary").

The helper name "rpath" is not great. I can't think of a better
name that would be accurate yet concise.

Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/20250207184140.1730466-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: factor out a DrvEnv base class

2025-02-11T03:10:10+00:00

We have separate Env classes for local tests and tests with a remote
endpoint. Make it easier to share the code by creating a base class.
Make env loading a method of this class.

Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/20250207184140.1730466-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

netconsole: selftest: test for sysdata CPU

2025-02-10T15:04:18+00:00

Add a new selftest to verify that the netconsole module correctly
handles CPU runtime data in sysdata. The test validates three scenarios:

1. Basic CPU sysdata functionality - verifies that cpu=X is appended to
   messages
2. CPU sysdata with userdata - ensures CPU data works alongside userdata
3. Disabled CPU sysdata - confirms no CPU data is included when disabled

The test uses taskset to control which CPU sends messages and verifies
the reported CPU matches the one used. This helps ensure that netconsole
accurately tracks and reports the originating CPU of messages.

Signed-off-by: Breno Leitao 
Reviewed-by: Simon Horman 
Signed-off-by: David S. Miller

netconsole: selftest: Add test for fragmented messages

2025-02-05T02:09:21+00:00

Add a new selftest to verify netconsole's handling of messages that
exceed the packet size limit and require fragmentation. The test sends
messages with varying sizes and userdata, validating that:

1. Large messages are correctly fragmented and reassembled
2. Userdata fields are properly preserved across fragments
3. Messages work correctly with and without kernel release version
   appending

The test creates a networking environment using netdevsim, sends
messages through /dev/kmsg, and verifies the received fragments maintain
message integrity.

Signed-off-by: Breno Leitao 
Reviewed-by: Simon Horman 
Link: https://patch.msgid.link/20250203-netcons_frag_msgs-v1-1-5bc6bedf2ac0@debian.org
Signed-off-by: Jakub Kicinski

netconsole: selftest: Delete all userdata keys

2025-01-10T02:06:36+00:00

Modify the cleanup function to remove all userdata keys created during the
test, instead of just deleting a single predefined key. This ensures a
more thorough cleanup of temporary resources.

Move the KEY_PATH variable definition inside the set_user_data function
to reduce global variables and improve encapsulation. The KEY_PATH
variable is now dynamically created when setting user data.

This change has no effect on the current test, while improving an
upcoming test that would create several userdata entries.

Signed-off-by: Breno Leitao 
Reviewed-by: Simon Horman 
Link: https://patch.msgid.link/20250108-netcons_overflow_test-v3-3-3d85eb091bec@debian.org
Signed-off-by: Jakub Kicinski