[PATCH net-next 00/14] selftests: net: shaper: Expand shaper API coverage

From: Mohsin Bashir <[email protected]>

Add more net shaper selftest coverage for group operations and nested
node management.

The series first prepares shared cleanup and capability helpers, and
separates the basic netdev grouping coverage from the rate-limited
variant. It then adds tests for updating node shaper rates through both
.set and .group, discovering the supported nesting depth, deleting child
nodes and reparenting their leaves, moving queues between nodes, and
rejecting node reparenting.

Further patches broaden API coverage: exercising the full set of scalar
shaper attributes, rejecting invalid .set requests while leaving the
existing configuration intact, grouping leaves drawn from different
parents (which requires an explicit parent), and recursively cleaning up
nodes left empty.

The new tests use the capability helper to skip unsupported devices
instead of depending on earlier test ordering, size their queue
requirements from the number of TX queues exposed in sysfs, and register
cleanup for created shapers as soon as the operation succeeds.

TAP version 13
1..22
ok 1 shaper.get_shapers
ok 2 shaper.get_caps
ok 3 shaper.set_qshapers
ok 4 shaper.del_qshapers
ok 5 shaper.set_nshapers
ok 6 shaper.del_nshapers
ok 7 shaper.set_all_supported_attrs
ok 8 shaper.invalid_set_preserves_state
ok 9 shaper.mixed_parent_group_requires_parent
ok 10 shaper.recursive_empty_node_cleanup
ok 11 shaper.basic_groups
ok 12 shaper.basic_groups_with_rate
ok 13 shaper.qgroups
ok 14 shaper.set_node_shaper
ok 15 shaper.group_update_rate
ok 16 shaper.delegation
# max nesting depth tested: 3
ok 17 shaper.nested_depth_limit
ok 18 shaper.delete_child_reparent
ok 19 shaper.move_queue_between_nodes
ok 20 shaper.reject_reparenting
ok 21 shaper.dup_leaves
ok 22 shaper.queue_update

Mohsin Bashir (14):
  selftests: net: shaper: Drop redundant command timeouts
  selftests: net: shaper: Prepare helpers for group tests
  selftests: net: shaper: Decouple basic_groups from netdev rate
    limiting
  selftests: net: shaper: Add basic_groups_with_rate test
  selftests: net: shaper: Add node scope .set rate update test
  selftests: net: shaper: Add .group rate update test
  selftests: net: shaper: Add nested depth limit discovery test
  selftests: net: shaper: Add child node deletion reparent test
  selftests: net: shaper: Add queue migration between nodes test
  selftests: net: shaper: Add reparenting rejection test
  selftests: net: shaper: Cover scalar attributes
  selftests: net: shaper: Reject invalid set requests
  selftests: net: shaper: Cover mixed-parent grouping
  selftests: net: shaper: Cover recursive node cleanup

 tools/testing/selftests/drivers/net/shaper.py | 1065 +++++++++++++++--
 1 file changed, 978 insertions(+), 87 deletions(-)

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2.53.0-Meta