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selftests: net: shaper: Cover scalar attributes

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Exercise queue-scope scalar shaper attributes reported by the device,
including rate limits, burst, priority and weight. Build the set request
from advertised capabilities so devices are tested for the attributes they
claim rather than skipped for missing unrelated fields.

Signed-off-by: Mohsin Bashir <hmohsin@meta.com>
Link: https://patch.msgid.link/20260805030936.1092907-12-mohsin.bashr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Mohsin Bashir 2026-08-04 20:09:33 -07:00 committed by Jakub Kicinski
parent 4f197c4498
commit 83731be090
1 changed files with 68 additions and 0 deletions
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68
tools/testing/selftests/drivers/net/shaper.py
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@ -168,6 +168,73 @@ def del_nshapers(cfg, nl_shaper) -> None:
shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True)
ksft_eq(len(shapers), 0)
def set_all_supported_attrs(cfg, nl_shaper) -> None:
""" Set every queue-scope attribute the device advertises and verify the read-back. """
_require_queues(cfg, 1)
_require_caps(cfg, nl_shaper, 'queue', [],
"queue scope shapers not supported by the device")
caps = _cap_get(cfg, nl_shaper, 'queue')
attrs = {'ifindex': cfg.ifindex,
'handle': {'scope': 'queue', 'id': 0}}
expected = {'ifindex': cfg.ifindex,
'parent': {'scope': 'netdev'},
'handle': {'scope': 'queue', 'id': 0}}
rate_attrs = {'support-bw-min': ('bw-min', 10000, 100),
'support-bw-max': ('bw-max', 20000, 200),
'support-burst': ('burst', 3000, 30)}
rate_attr_supported = any(cap in caps for cap in rate_attrs)
bps_supported = 'support-metric-bps' in caps
pps_supported = 'support-metric-pps' in caps
def add_rate_attrs(metric, value_idx) -> None:
attrs['metric'] = metric
expected['metric'] = metric
for cap, (attr, bps_value, pps_value) in rate_attrs.items():
if cap not in caps:
continue
value = bps_value if value_idx == 0 else pps_value
attrs[attr] = value
expected[attr] = value
if rate_attr_supported:
if bps_supported:
add_rate_attrs('bps', 0)
elif pps_supported:
add_rate_attrs('pps', 1)
if 'support-priority' in caps:
attrs['priority'] = 1
expected['priority'] = 1
if 'support-weight' in caps:
attrs['weight'] = 2
expected['weight'] = 2
if len(attrs) == 2:
raise KsftSkipEx("device does not advertise any supported queue shaper attributes")
nl_shaper.set(attrs)
defer(_delete_shaper, cfg, nl_shaper, {'scope': 'queue', 'id': 0})
shaper = nl_shaper.get({'ifindex': cfg.ifindex,
'handle': {'scope': 'queue', 'id': 0}})
ksft_eq(shaper, expected)
if rate_attr_supported and bps_supported and pps_supported:
add_rate_attrs('pps', 1)
nl_shaper.set(attrs)
shaper = nl_shaper.get({'ifindex': cfg.ifindex,
'handle': {'scope': 'queue', 'id': 0}})
ksft_eq(shaper, expected)
_delete_shaper(cfg, nl_shaper, {'scope': 'queue', 'id': 0})
shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True)
ksft_eq(len(shapers), 0)
def _group_under_netdev(cfg, nl_shaper, bw_max=None):
r"""Group queues under a netdev-scope node; caller owns node teardown.
@ -1084,6 +1151,7 @@ def main() -> None:
del_qshapers,
set_nshapers,
del_nshapers,
set_all_supported_attrs,
basic_groups,
basic_groups_with_rate,
qgroups,