SAVED_TRACES_NUM
(tracer->st_arr.saved_traces_index + 1) & (SAVED_TRACES_NUM - 1);
end_index = (saved_traces_index - 1) & (SAVED_TRACES_NUM - 1);
index = (index + 1) & (SAVED_TRACES_NUM - 1);
struct mlx5_fw_trace_data straces[SAVED_TRACES_NUM];