76 	int tapfd;  in vhost_kernel_open_tap()  local
84 	tapfd = open(PATH_NET_TUN, O_RDWR);  in vhost_kernel_open_tap()
85 	if (tapfd < 0) {  in vhost_kernel_open_tap()
95 	if (ioctl(tapfd, TUNGETFEATURES, &tap_features) == -1) {  in vhost_kernel_open_tap()
120 	if (ioctl(tapfd, TUNSETIFF, (void *)&ifr) == -1) {  in vhost_kernel_open_tap()
131 	if (fcntl(tapfd, F_SETFL, O_NONBLOCK) < 0) {  in vhost_kernel_open_tap()
136 	if (ioctl(tapfd, TUNSETVNETHDRSZ, &hdr_size) < 0) {  in vhost_kernel_open_tap()
141 	if (ioctl(tapfd, TUNSETSNDBUF, &sndbuf) < 0) {  in vhost_kernel_open_tap()
146 	ret = vhost_kernel_tap_set_offload(tapfd, features);  in vhost_kernel_open_tap()
153 	if (ioctl(tapfd, SIOCSIFHWADDR, (void *)&ifr) == -1) {  in vhost_kernel_open_tap()
161 	return tapfd;  in vhost_kernel_open_tap()
164 	close(tapfd);  in vhost_kernel_open_tap()