This can be used to distinguish different version of the flexible pointwise windowing applied to the FFT and expose this platform configuration to the application.
The SRS processing chain (https://doc.dpdk.org/guides/prog_guide/bbdev.html#bbdev-fft-operation) includes a pointwise multiplication by time window whose degrees of liberty cannot be exposed through a standard fixed API but through a hash matching a version of such window definition (not HW IP specific) defined as a long array of complex numbers. Using that mechanism user application can retrieve information related to what tables have been dynamically programmed on any bbdev device supporting FFT windowing operation. Signed-off-by: Nicolas Chautru <nicolas.chau...@intel.com> --- lib/bbdev/rte_bbdev.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/bbdev/rte_bbdev.h b/lib/bbdev/rte_bbdev.h index 2985c9f42b..e1ba038e0d 100644 --- a/lib/bbdev/rte_bbdev.h +++ b/lib/bbdev/rte_bbdev.h @@ -349,6 +349,8 @@ struct rte_bbdev_driver_info { const struct rte_bbdev_op_cap *capabilities; /** Device cpu_flag requirements */ const enum rte_cpu_flag_t *cpu_flag_reqs; + /** Versioning number for the FFT configured on the device. */ + uint16_t fft_version; }; /** Macro used at end of bbdev PMD list */ -- 2.34.1
