ELEMS_PER_PAGE
((u32) (ELEMS_PER_PAGE(elem_size) - \
p_chain->elem_per_page = ELEMS_PER_PAGE(elem_size);
u64 chain_size = ELEMS_PER_PAGE(elem_size) * page_cnt;
ELEMS_PER_PAGE(sizeof (struct eth_rx_bd));
ELEMS_PER_PAGE(sizeof (union eth_rx_cqe));
ELEMS_PER_PAGE(sizeof (union eth_tx_bd_types));