extern int vppcom_session_read_segments (uint32_t session_handle,
vppcom_data_segments_t ds);
extern void vppcom_session_free_segments (uint32_t session_handle,
vppcom_data_segments_t ds);
extern int vppcom_session_read_segments (uint32_t session_handle,
vppcom_data_segments_t ds);
extern void vppcom_session_free_segments (uint32_t session_handle,
vppcom_data_segments_t ds);