DPAA_HWA_SIZE
XDP_PACKET_HEADROOM - DPAA_HWA_SIZE)
#define DPAA_RX_PRIV_DATA_A050385_SIZE (DPAA_A050385_ALIGN - DPAA_HWA_SIZE)
headroom = (u16)(bl[port].priv_data_size + DPAA_HWA_SIZE);