This patch extracts the descriptors to buffers filling from
copy_desc_to_mbuf() into a dedicated function. Besides, enqueue
and dequeue path are refactored to use the same function
sync_fill_seg() for preparing batch elements, which simplifies
the code without performance degradation.
Signed-off-by: Xuan Ding <xuan.ding@intel.com>
Tested-by: Yvonne Yang <yvonnex.yang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
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