_lm_tcp_tx_write_db
_lm_tcp_tx_write_db(pdev, tcp_con, tcp_state->cid, 0, (u16_t)S16_SUB(new_prod, old_prod), 1);
_lm_tcp_tx_write_db(pdev, tx_con, tcp->cid, tx_con->db_more_bytes, tx_con->db_more_bds, 0);