157 	int tapfd;  in tap_support_features()  local
160 	tapfd = open(PATH_NET_TUN, O_RDWR);  in tap_support_features()
161 	if (tapfd < 0) {  in tap_support_features()
167 	if (ioctl(tapfd, TUNGETFEATURES, &tap_features) == -1) {  in tap_support_features()
169 		close(tapfd);  in tap_support_features()
173 	close(tapfd);  in tap_support_features()
299 vhost_kernel_set_backend(int vhostfd, int tapfd)  in vhost_kernel_set_backend()  argument
303 	f.fd = tapfd;  in vhost_kernel_set_backend()
328 	int tapfd;  in vhost_kernel_enable_queue_pair()  local
337 		tapfd = dev->tapfds[pair_idx];  in vhost_kernel_enable_queue_pair()
342 		if (req_mq && vhost_kernel_tap_set_queue(tapfd, false) < 0) {  in vhost_kernel_enable_queue_pair()
351 		tapfd = dev->tapfds[pair_idx];  in vhost_kernel_enable_queue_pair()
352 		if (vhost_kernel_tap_set_offload(tapfd, dev->features) == -1)  in vhost_kernel_enable_queue_pair()
354 		if (req_mq && vhost_kernel_tap_set_queue(tapfd, true) < 0) {  in vhost_kernel_enable_queue_pair()
367 	tapfd = vhost_kernel_open_tap(&dev->ifname, hdr_size, req_mq,  in vhost_kernel_enable_queue_pair()
369 	if (tapfd < 0) {  in vhost_kernel_enable_queue_pair()
374 	dev->tapfds[pair_idx] = tapfd;  in vhost_kernel_enable_queue_pair()
377 	if (vhost_kernel_set_backend(vhostfd, tapfd) < 0) {  in vhost_kernel_enable_queue_pair()