1 // SPDX-License-Identifier: GPL-2.0-only
30 	struct tap_dev    tap;  member
40 	const struct net_device *dev = to_net_dev(d->parent);  in macvtap_net_namespace()
54 static void macvtap_count_tx_dropped(struct tap_dev *tap)  in macvtap_count_tx_dropped()  argument
56 	struct macvtap_dev *vlantap = container_of(tap, struct macvtap_dev, tap);  in macvtap_count_tx_dropped()
57 	struct macvlan_dev *vlan = &vlantap->vlan;  in macvtap_count_tx_dropped()
59 	this_cpu_inc(vlan->pcpu_stats->tx_dropped);  in macvtap_count_tx_dropped()
62 static void macvtap_count_rx_dropped(struct tap_dev *tap)  in macvtap_count_rx_dropped()  argument
64 	struct macvtap_dev *vlantap = container_of(tap, struct macvtap_dev, tap);  in macvtap_count_rx_dropped()
65 	struct macvlan_dev *vlan = &vlantap->vlan;  in macvtap_count_rx_dropped()
70 static void macvtap_update_features(struct tap_dev *tap,  in macvtap_update_features()  argument
73 	struct macvtap_dev *vlantap = container_of(tap, struct macvtap_dev, tap);  in macvtap_update_features()
74 	struct macvlan_dev *vlan = &vlantap->vlan;  in macvtap_update_features()
76 	vlan->set_features = features;  in macvtap_update_features()
77 	netdev_update_features(vlan->dev);  in macvtap_update_features()
87 	INIT_LIST_HEAD(&vlantap->tap.queue_list);  in macvtap_newlink()
90 	 * tap support all offloads also.  in macvtap_newlink()
92 	vlantap->tap.tap_features = TUN_OFFLOADS;  in macvtap_newlink()
97 	vlantap->tap.count_tx_dropped = macvtap_count_tx_dropped;  in macvtap_newlink()
98 	vlantap->tap.count_rx_dropped = macvtap_count_rx_dropped;  in macvtap_newlink()
99 	vlantap->tap.update_features  = macvtap_update_features;  in macvtap_newlink()
101 	err = netdev_rx_handler_register(dev, tap_handle_frame, &vlantap->tap);  in macvtap_newlink()
114 	vlantap->tap.dev = vlantap->vlan.dev;  in macvtap_newlink()
125 	tap_del_queues(&vlantap->tap);  in macvtap_dellink()
132 	dev->tx_queue_len = TUN_READQ_SIZE;  in macvtap_setup()
150 				unsigned long event, void *ptr)  in macvtap_device_event()  argument
159 	if (dev->rtnl_link_ops != &macvtap_link_ops)  in macvtap_device_event()
162 	snprintf(tap_name, IFNAMSIZ, "tap%d", dev->ifindex);  in macvtap_device_event()
165 	switch (event) {  in macvtap_device_event()
171 		err = tap_get_minor(macvtap_major, &vlantap->tap);  in macvtap_device_event()
175 		devt = MKDEV(MAJOR(macvtap_major), vlantap->tap.minor);  in macvtap_device_event()
176 		classdev = device_create(&macvtap_class, &dev->dev, devt,  in macvtap_device_event()
179 			tap_free_minor(macvtap_major, &vlantap->tap);  in macvtap_device_event()
182 		err = sysfs_create_link(&dev->dev.kobj, &classdev->kobj,  in macvtap_device_event()
188 		/* vlan->minor == 0 if NETDEV_REGISTER above failed */  in macvtap_device_event()
189 		if (vlantap->tap.minor == 0)  in macvtap_device_event()
191 		sysfs_remove_link(&dev->dev.kobj, tap_name);  in macvtap_device_event()
192 		devt = MKDEV(MAJOR(macvtap_major), vlantap->tap.minor);  in macvtap_device_event()
194 		tap_free_minor(macvtap_major, &vlantap->tap);  in macvtap_device_event()
197 		if (tap_queue_resize(&vlantap->tap))  in macvtap_device_event()
253 MODULE_DESCRIPTION("MAC-VLAN based tap driver");