Working with WSL

In your MariaDB server:

CREATE USER 'root'@'172.30.167.123' IDENTIFIED BY 'root';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'172.30.167.123' ;    
FLUSH PRIVILEGES;

From WSL:

mysql -h 172.30.160.1 -uroot -proot
> USE xidb;

In your map.conf:

mysql_host:      172.30.160.1
mysql_port:      3306
mysql_login:     root
mysql_password:  root
mysql_database:  xidb