print_verbose
print_verbose("Rx: addr: %lx len: %u options: %u pkt_nb: %u valid: %u\n",
print_verbose("Tx addr: %llx len: %u options: %u pkt_nb: %u\n",
print_verbose("Switching Tx/Rx direction\n");
print_verbose("offset: %d len: %u valid: %u options: %u pkt_nb: %u\n",