[PATCH] net/mlx5: fix matcher flags in counter offset detection

Raslan Darawsheh rasland at nvidia.com
Mon Sep 1 10:34:54 CEST 2025


Hi,


On 20/08/2025 11:45 AM, Dariusz Sosnowski wrote:
> This patch fixes a bug in
> mlx5_flow_dv_discover_counter_offset_support()
> uncovered by a warning reported by MSVC:
> 
>      ../drivers/net/mlx5/mlx5_flow_dv.c(19636): warning C5287:
>          operands are different enum types 'ibv_flow_attr_type' and
>          'ibv_flow_flags';
>          use an explicit cast to silence this warning
> 
> IBV_FLOW_ATTR_FLAGS_EGRESS was incorrectly passed in to
> type field of mlx5dv_flow_matcher_attr struct,
> instead of flags field.
> As a result counter offset support discovery returned a false positive
> result on application with old rdma-core.
> 
> Bugzilla ID: 1758
> Fixes: 4fd5e1484887 ("net/mlx5: fix counter offset detection")
> Cc: suanmingm at nvidia.com
> Cc: stable at dpdk.org
> 
> Reported-by: Andre Muezerie <andremue at linux.microsoft.com>
> Signed-off-by: Dariusz Sosnowski <dsosnowski at nvidia.com>

Patch applied to next-net-mlx,

Kindest regards
Raslan Darawsheh



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