lm_bd_chain_produce_bd
cur_bd = lm_bd_chain_produce_bd(rx_chain_bd);
cur_sge = rx_chain_sge ? lm_bd_chain_produce_bd(rx_chain_sge) : NULL;
prod_bd = (struct eth_tx_bd *)lm_bd_chain_produce_bd(&tx_chain->bd_chain);
start_bd = (struct eth_tx_start_bd *)lm_bd_chain_produce_bd(&tx_chain->bd_chain);
parse_bd_ptr = lm_bd_chain_produce_bd(&tx_chain->bd_chain);
parse_bd_2nd_ptr = lm_bd_chain_produce_bd(&tx_chain->bd_chain);
prod_bd = (struct eth_tx_bd *)lm_bd_chain_produce_bd(&tx_chain->bd_chain);
prod_bd = (struct eth_tx_bd *)lm_bd_chain_produce_bd(&tx_chain->bd_chain);