print_port_stat(string, "drop=", ps.stats.tx_dropped, 1);
print_port_stat(string, "errs=", ps.stats.tx_errors, 1);
print_port_stat(string, "coll=", ps.stats.collisions, 0);
print_port_stat(string, "drop=", ps.stats.tx_dropped, 1);
print_port_stat(string, "errs=", ps.stats.tx_errors, 1);
print_port_stat(string, "coll=", ps.stats.collisions, 0);