linux-stable.git/tools/testing/selftests/net/lib/py, branch v6.14

tools: ynl: move python code to separate sub-directory

2025-01-09T20:53:27+00:00

Move python code to a separate directory so it can be
packaged as a python module. Updates existing references
in selftests and docs.

Also rename ynl-gen-[c|rst] to ynl_gen_[c|rst], avoid
dashes as these prevent easy imports for entrypoints.

Signed-off-by: Jan Stancek 
Reviewed-by: Donald Hunter 
Link: https://patch.msgid.link/a4151bad0e6984e7164d395125ce87fd2e048bf1.1736343575.git.jstancek@redhat.com
Signed-off-by: Jakub Kicinski

selftests: drv-net: test drivers sleeping in ndo_get_stats64

2025-01-09T03:36:46+00:00

Most of our tests use rtnetlink to read device stats, so they
don't expose the drivers much to paths in which device stats
are read under RCU. Add tests which hammer profcs reads to
make sure drivers:
 - don't sleep while reporting stats,
 - can handle parallel reads,
 - can handle device going down while reading.

Set ifname on the env class in NetDrvEnv, we already do that
in NetDrvEpEnv.

  KTAP version 1
  1..7
  ok 1 stats.check_pause
  ok 2 stats.check_fec
  ok 3 stats.pkt_byte_sum
  ok 4 stats.qstat_by_ifindex
  ok 5 stats.check_down
  ok 6 stats.procfs_hammer
  # completed up/down cycles: 6
  ok 7 stats.procfs_downup_hammer
  # Totals: pass:7 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Petr Machata 
Reviewed-by: Willem de Bruijn 
Link: https://patch.msgid.link/20250107022932.2087744-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: assume stats refresh is 0 if no ethtool -c support

2024-12-23T18:12:20+00:00

Tests using HW stats wait for them to stabilize, using data from
ethtool -c as the delay. Not all drivers implement ethtool -c
so handle the errors gracefully.

Reviewed-by: Andrew Lunn 
Reviewed-by: Willem de Bruijn 
Link: https://patch.msgid.link/20241220003116.1458863-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: net: support setting recv_size in YNL

2024-12-17T01:30:13+00:00

recv_size parameter allows constraining the buffer size for dumps.
It's useful in testing kernel handling of dump continuation,
IOW testing dumps which span multiple skbs.

Let the tests set this parameter when initializing the YNL family.
Keep the normal default, we don't want tests to unintentionally
behave very differently than normal code.

Reviewed-by: Joe Damato 
Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/20241213152244.3080955-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2024-10-21T07:14:18+00:00

Cross-merge networking fixes after downstream PR (net-6.12-rc4).

Conflicts:

107a034d5c1e ("net/mlx5: qos: Store rate groups in a qos domain")
1da9cfd6c41c ("net/mlx5: Unregister notifier on eswitch init failure")

Signed-off-by: Paolo Abeni

selftests: drivers: net: fix name not defined

2024-10-11T23:01:00+00:00

This fix solves this error, when calling kselftest with targets
"drivers/net":

File "tools/testing/selftests/net/lib/py/nsim.py", line 64, in __init__
  if e.errno == errno.ENOSPC:
NameError: name 'errno' is not defined

The error was found by running tests manually with the command:
make kselftest TARGETS="drivers/net"

The module errno makes available standard error system symbols.

Reviewed-by: Petr Machata 
Signed-off-by: Alessandro Zanni 
Link: https://patch.msgid.link/20241010183034.24739-1-alessandro.zanni87@gmail.com
Signed-off-by: Jakub Kicinski

testing: net-drv: add basic shaper test

2024-10-10T15:30:23+00:00

Leverage a basic/dummy netdevsim implementation to do functional
coverage for NL interface.

Reviewed-by: Jiri Pirko 
Signed-off-by: Paolo Abeni 
Link: https://patch.msgid.link/43092afbf38365c796088bf8fc155e523ab434ae.1728460186.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski

selftests: drv-net: rss_ctx: test dumping RSS contexts

2024-08-12T13:16:25+00:00

Add a test for dumping RSS contexts. Make sure indir table
and key are sane when contexts are created with various
combination of inputs. Test the dump filtering by ifname
and start-context.

Reviewed-by: Petr Machata 
Reviewed-by: Edward Cree 
Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

selftests: net: ksft: print more of the stack for checks

2024-08-02T23:09:47+00:00

Print more stack frames and the failing line when check fails.
This helps when tests use helpers to do the checks.

Before:

  # At ./ksft/drivers/net/hw/rss_ctx.py line 92:
  # Check failed 1037698 >= 396893.0 traffic on other queues:[344612, 462380, 233020, 449174, 342298]
  not ok 8 rss_ctx.test_rss_context_queue_reconfigure

After:

  # Check| At ./ksft/drivers/net/hw/rss_ctx.py, line 387, in test_rss_context_queue_reconfigure:
  # Check|     test_rss_queue_reconfigure(cfg, main_ctx=False)
  # Check| At ./ksft/drivers/net/hw/rss_ctx.py, line 230, in test_rss_queue_reconfigure:
  # Check|     _send_traffic_check(cfg, port, ctx_ref, { 'target': (0, 3),
  # Check| At ./ksft/drivers/net/hw/rss_ctx.py, line 92, in _send_traffic_check:
  # Check|     ksft_lt(sum(cnts[i] for i in params['noise']), directed / 2,
  # Check failed 1045235 >= 405823.5 traffic on other queues (context 1)':[460068, 351995, 565970, 351579, 127270]
  not ok 8 rss_ctx.test_rss_context_queue_reconfigure

Link: https://patch.msgid.link/20240801232317.545577-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: net: ksft: support marking tests as disruptive

2024-08-02T23:09:27+00:00

Add new @ksft_disruptive decorator to mark the tests that might
be disruptive to the system. Depending on how well the previous
test works in the CI we might want to disable disruptive tests
by default and only let the developers run them manually.

KSFT framework runs disruptive tests by default. DISRUPTIVE=False
environment (or config file) can be used to disable these tests.
ksft_setup should be called by the test cases that want to use
new decorator (ksft_setup is only called via NetDrvEnv/NetDrvEpEnv for now).

In the future we can add similar decorators to, for example, avoid
running slow tests all the time. And/or have some option to run
only 'fast' tests for some sort of smoke test scenario.

  $ DISRUPTIVE=False ./stats.py
  KTAP version 1
  1..5
  ok 1 stats.check_pause
  ok 2 stats.check_fec
  ok 3 stats.pkt_byte_sum
  ok 4 stats.qstat_by_ifindex
  ok 5 stats.check_down # SKIP marked as disruptive
  # Totals: pass:4 fail:0 xfail:0 xpass:0 skip:1 error:0

v3:
- parse yes and properly treat non-zero nums as true (Petr)

v2:
- convert from cli argument to env variable (Jakub)

Signed-off-by: Stanislav Fomichev 
Link: https://patch.msgid.link/20240802000309.2368-2-sdf@fomichev.me
Signed-off-by: Jakub Kicinski