22 	struct ifreq ifr;  in tun_attach()  local
24 	memset(&ifr, 0, sizeof(ifr));  in tun_attach()
25 	strcpy(ifr.ifr_name, dev);  in tun_attach()
26 	ifr.ifr_flags = IFF_ATTACH_QUEUE;  in tun_attach()
28 	return ioctl(fd, TUNSETQUEUE, (void *) &ifr);  in tun_attach()
33 	struct ifreq ifr;  in tun_detach()  local
35 	memset(&ifr, 0, sizeof(ifr));  in tun_detach()
36 	strcpy(ifr.ifr_name, dev);  in tun_detach()
37 	ifr.ifr_flags = IFF_DETACH_QUEUE;  in tun_detach()
39 	return ioctl(fd, TUNSETQUEUE, (void *) &ifr);  in tun_detach()
44 	struct ifreq ifr;  in tun_alloc()  local
53 	memset(&ifr, 0, sizeof(ifr));  in tun_alloc()
54 	strcpy(ifr.ifr_name, dev);  in tun_alloc()
55 	ifr.ifr_flags = IFF_TAP | IFF_NAPI | IFF_MULTI_QUEUE;  in tun_alloc()
57 	err = ioctl(fd, TUNSETIFF, (void *) &ifr);  in tun_alloc()
63 	strcpy(dev, ifr.ifr_name);  in tun_alloc()