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selftests: net: shaper: Add .group rate update test

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Add group_update_rate to test updating an existing node's rate
via the .group callback. Creates a node with bw_max=10000,
re-groups with bw_max=50000, and verifies the rate changed while
leaves remain under the same node.

Signed-off-by: Mohsin Bashir <hmohsin@meta.com>
Link: https://patch.msgid.link/20260805030936.1092907-7-mohsin.bashr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Mohsin Bashir
2026-08-04 20:09:28 -07:00
committed by Jakub Kicinski
parent 212410dc81
commit 047735744d
1 changed files with 67 additions and 0 deletions
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67
tools/testing/selftests/drivers/net/shaper.py
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@@ -380,6 +380,72 @@ def set_node_shaper(cfg, nl_shaper) -> None:
shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True)
ksft_eq(len(shapers), 0)
def group_update_rate(cfg, nl_shaper) -> None:
""" Verify re-grouping a node updates its rate while leaving the leaves untouched. """
_require_queues(cfg, 3)
_require_caps(cfg, nl_shaper, 'node', ['support-bw-max', 'support-metric-bps'],
"device does not support node scope shapers with bw_max and metric bps")
_require_caps(cfg, nl_shaper, 'queue', ['support-nesting', 'support-weight'],
"device does not support nested queue scope shapers with weight")
# Create node with Q1, Q2 at bw_max=10000
node_handle = nl_shaper.group({
'ifindex': cfg.ifindex,
'leaves':[{'handle': {'scope': 'queue', 'id': 1},
'weight': 1},
{'handle': {'scope': 'queue', 'id': 2},
'weight': 1}],
'handle': {'scope':'node'},
'metric': 'bps',
'bw-max': 10000})
node_id = node_handle['handle']['id']
for i in range(1, 3):
defer(_delete_shaper, cfg, nl_shaper, {'scope': 'queue', 'id': i})
# Update rate via .group on the same node
nl_shaper.group({
'ifindex': cfg.ifindex,
'leaves':[{'handle': {'scope': 'queue', 'id': 1},
'weight': 1},
{'handle': {'scope': 'queue', 'id': 2},
'weight': 1}],
'handle': {'scope':'node', 'id': node_id},
'metric': 'bps',
'bw-max': 50000})
# Verify rate updated
shaper = nl_shaper.get({'ifindex': cfg.ifindex,
'handle': {'scope': 'node', 'id': node_id}})
ksft_eq(shaper, {'ifindex': cfg.ifindex,
'handle': {'scope': 'node', 'id': node_id},
'parent': {'scope': 'netdev'},
'metric': 'bps',
'bw-max': 50000})
# Verify leaves unchanged
shaper_q1 = nl_shaper.get({'ifindex': cfg.ifindex,
'handle': {'scope': 'queue', 'id': 1}})
ksft_eq(shaper_q1, {'ifindex': cfg.ifindex,
'parent': {'scope': 'node', 'id': node_id},
'handle': {'scope': 'queue', 'id': 1},
'weight': 1})
shaper_q2 = nl_shaper.get({'ifindex': cfg.ifindex,
'handle': {'scope': 'queue', 'id': 2}})
ksft_eq(shaper_q2, {'ifindex': cfg.ifindex,
'parent': {'scope': 'node', 'id': node_id},
'handle': {'scope': 'queue', 'id': 2},
'weight': 1})
# Make sure we only have 3 shapers including 2 queues and the node
shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True)
ksft_eq(len(shapers), 3)
# Cleanup
for i in range(1, 3):
_delete_shaper(cfg, nl_shaper, {'scope': 'queue', 'id': i})
shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True)
ksft_eq(len(shapers), 0)
def delegation(cfg, nl_shaper) -> None:
_require_queues(cfg, 4)
_require_caps(cfg, nl_shaper, 'node',
@@ -580,6 +646,7 @@ def main() -> None:
basic_groups_with_rate,
qgroups,
set_node_shaper,
group_update_rate,
delegation,
dup_leaves,
queue_update],