eth_rx_bd_next_page
ASSERT_STATIC(OFFSETOF(struct eth_rx_bd_next_page, addr_hi) == OFFSETOF(lm_bd_chain_next, addr_hi)) ;
ASSERT_STATIC(OFFSETOF(struct eth_rx_bd_next_page, addr_lo) == OFFSETOF(lm_bd_chain_next, addr_lo)) ;
ASSERT_STATIC(OFFSETOF(struct eth_rx_bd_next_page, reserved)== OFFSETOF(lm_bd_chain_next, reserved) ) ;