Hi,

-----Original Message-----
From: Bing Zhao <redacted>
Sent: Thursday, July 29, 2021 7:04 PM
To: Slava Ovsiienko <redacted>; Matan Azrad
[off-list ref]
Cc: dev@dpdk.org; Ori Kam <redacted>; Raslan Darawsheh
[off-list ref]; NBU-Contact-Thomas Monjalon
[off-list ref]
Subject: [PATCH] net/mlx5: fix the EIR calculation

Before the yellow color policy was supported, the only supported profile of
metering is RFC2697 and EIR is not part of the profile.
When creating a meter with this profile, the EIR part was always zero.

After the yellow color policy supported and RFC2698 & 4115 support was
introduced, EIR is relevant and should be calculated. Usually the EIR could not
be zero and the formula for calculating CIR mantissa & exponent could be
reused.

The EIR could be 0 and then only green and red colors will be supported from
the specification. Both the mantissa and exponent parts should be set to 0.
Currently, the formula wrongly sets non-zero values for the EIR=0 case.

Setting the mantissa and the exponent parts to zeros when EIR is 0 will solve
the issue.

Fixes: 33a7493c8df8 ("net/mlx5: support meter for trTCM profiles")

Signed-off-by: Bing Zhao <redacted>
Acked-by: Matan Azrad <redacted>
---
 drivers/net/mlx5/mlx5_flow_meter.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh