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| author | Hariprasad Kelam <hkelam@marvell.com> | 2026-07-17 14:13:49 +0530 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-07-23 08:30:07 -0700 |
| commit | bb0d96ebe5f4d1acccf4dc36ca7f01f9a8fa1ba1 (patch) | |
| tree | d12c5947a0f96f82e339c4d101ad1a0e34455b4b /tools/perf/scripts/python/stackcollapse.py | |
| parent | 1087ba5497ae84281750da0020c30a9074782714 (diff) | |
octeontx2-pf: tc: fix egress ratelimiting
The egress rate calculation computes an incorrect mantissa and exponent,
causing up to ~50% deviation from the configured rate at lower speeds.
Rework the computation to follow the hardware rate formula:
rate = 2 * (1 + mantissa/256) * 2^exp / (1 << div_exp)
Keep div_exp = 0 and derive exp and mantissa from half of the requested
rate. Rates below 2 Mbps are floored to the smallest encodable step
(exp = 0, mantissa = 0).
Fixes: e638a83f167e ("octeontx2-pf: TC_MATCHALL egress ratelimiting offload")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Nitin Shetty J <nshettyj@marvell.com>
Link: https://patch.msgid.link/20260717084349.2227796-1-nshettyj@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions