eth_tx_2nd_bd
struct eth_tx_2nd_bd second_bd /* The second tx bd of a given packet */;
struct eth_tx_2nd_bd *second_bd;
second_bd = (struct eth_tx_2nd_bd *)
second_bd = (struct eth_tx_2nd_bd *)
second_bd = (struct eth_tx_2nd_bd *)
(struct eth_tx_2nd_bd *)tx_data_bd;