1 // SPDX-License-Identifier: GPL-2.0-only
35 	const struct net_device *dev = to_net_dev(d->parent);  in ipvtap_net_namespace()
47 	struct tap_dev	  tap;  member
50 static void ipvtap_count_tx_dropped(struct tap_dev *tap)  in ipvtap_count_tx_dropped()  argument
52 	struct ipvtap_dev *vlantap = container_of(tap, struct ipvtap_dev, tap);  in ipvtap_count_tx_dropped()
53 	struct ipvl_dev *vlan = &vlantap->vlan;  in ipvtap_count_tx_dropped()
55 	this_cpu_inc(vlan->pcpu_stats->tx_drps);  in ipvtap_count_tx_dropped()
58 static void ipvtap_count_rx_dropped(struct tap_dev *tap)  in ipvtap_count_rx_dropped()  argument
60 	struct ipvtap_dev *vlantap = container_of(tap, struct ipvtap_dev, tap);  in ipvtap_count_rx_dropped()
61 	struct ipvl_dev *vlan = &vlantap->vlan;  in ipvtap_count_rx_dropped()
66 static void ipvtap_update_features(struct tap_dev *tap,  in ipvtap_update_features()  argument
69 	struct ipvtap_dev *vlantap = container_of(tap, struct ipvtap_dev, tap);  in ipvtap_update_features()
70 	struct ipvl_dev *vlan = &vlantap->vlan;  in ipvtap_update_features()
72 	vlan->sfeatures = features;  in ipvtap_update_features()
73 	netdev_update_features(vlan->dev);  in ipvtap_update_features()
83 	INIT_LIST_HEAD(&vlantap->tap.queue_list);  in ipvtap_newlink()
86 	 * tap support all offloads also.  in ipvtap_newlink()
88 	vlantap->tap.tap_features = TUN_OFFLOADS;  in ipvtap_newlink()
89 	vlantap->tap.count_tx_dropped = ipvtap_count_tx_dropped;  in ipvtap_newlink()
90 	vlantap->tap.update_features =	ipvtap_update_features;  in ipvtap_newlink()
91 	vlantap->tap.count_rx_dropped = ipvtap_count_rx_dropped;  in ipvtap_newlink()
93 	err = netdev_rx_handler_register(dev, tap_handle_frame, &vlantap->tap);  in ipvtap_newlink()
106 	vlantap->tap.dev = vlantap->vlan.dev;  in ipvtap_newlink()
117 	tap_del_queues(&vlan->tap);  in ipvtap_dellink()
124 	dev->tx_queue_len = TUN_READQ_SIZE;  in ipvtap_setup()
125 	dev->priv_flags &= ~IFF_NO_QUEUE;  in ipvtap_setup()
137 			       unsigned long event, void *ptr)  in ipvtap_device_event()  argument
146 	if (dev->rtnl_link_ops != &ipvtap_link_ops)  in ipvtap_device_event()
149 	snprintf(tap_name, IFNAMSIZ, "tap%d", dev->ifindex);  in ipvtap_device_event()
152 	switch (event) {  in ipvtap_device_event()
158 		err = tap_get_minor(ipvtap_major, &vlantap->tap);  in ipvtap_device_event()
162 		devt = MKDEV(MAJOR(ipvtap_major), vlantap->tap.minor);  in ipvtap_device_event()
163 		classdev = device_create(&ipvtap_class, &dev->dev, devt,  in ipvtap_device_event()
166 			tap_free_minor(ipvtap_major, &vlantap->tap);  in ipvtap_device_event()
169 		err = sysfs_create_link(&dev->dev.kobj, &classdev->kobj,  in ipvtap_device_event()
175 		/* vlan->minor == 0 if NETDEV_REGISTER above failed */  in ipvtap_device_event()
176 		if (vlantap->tap.minor == 0)  in ipvtap_device_event()
178 		sysfs_remove_link(&dev->dev.kobj, tap_name);  in ipvtap_device_event()
179 		devt = MKDEV(MAJOR(ipvtap_major), vlantap->tap.minor);  in ipvtap_device_event()
181 		tap_free_minor(ipvtap_major, &vlantap->tap);  in ipvtap_device_event()
184 		if (tap_queue_resize(&vlantap->tap))  in ipvtap_device_event()
240 MODULE_DESCRIPTION("IP-VLAN based tap driver");