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selftests: drv-net: rss_ctx: Add retries to test_rss_context_overlap to reduce flakes

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Similar to commit 690043b95c ("selftests: drv-net: rss: Add
retries to test_rss_key_indir to reduce flakes"), implement the
retry mechanism for test_rss_context_overlap. This gives the test
more attempts to distribute the flow evenly, as the chance of
flow skewing to one queue is high.

Example failures:

 # Check failed 5288 < 7000 traffic on main context (1/2): [2727, 2561, 8961, 6648]
not ok 1 rss_ctx.test_rss_context_overlap

 # Check failed 6710 < 7000 traffic on main context (2/2): [9280, 5217, 5358, 1352]
not ok 1 rss_ctx.test_rss_context_overlap

Ran test_rss_context_overlap and test_rss_context_overlap2
over 1,000 consecutive runs with no failures.

Signed-off-by: Zinc Lim <limzhineng2@gmail.com>
Link: https://patch.msgid.link/20260702164932.2832916-1-limzhineng2@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Zinc Lim
2026-07-02 09:49:31 -07:00
committed by Paolo Abeni
parent 0e74441ede
commit fe3e786ef4
1 changed files with 8 additions and 3 deletions
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11
tools/testing/selftests/drivers/net/hw/rss_ctx.py
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@@ -651,9 +651,14 @@ def test_rss_context_overlap(cfg, other_ctx=0):
ntuple = defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}")
# Test the main context
cnts = _get_rx_cnts(cfg)
GenerateTraffic(cfg, port=port).wait_pkts_and_stop(20000)
cnts = _get_rx_cnts(cfg, prev=cnts)
attempts = 3
for attempt in range(attempts):
cnts = _get_rx_cnts(cfg)
GenerateTraffic(cfg, port=port).wait_pkts_and_stop(20000)
cnts = _get_rx_cnts(cfg, prev=cnts)
if sum(cnts[:2]) >= 7000 and sum(cnts[2:4]) >= 7000:
break
ksft_pr(f"Skewed queue distribution, attempt {attempt + 1}/{attempts}: " + str(cnts))
ksft_ge(sum(cnts[ :4]), 20000, "traffic on main context: " + str(cnts))
ksft_ge(sum(cnts[ :2]), 7000, "traffic on main context (1/2): " + str(cnts))