net/8021q/vlan_core.c

79 	struct vlan_info *vlan_info = rcu_dereference(dev->vlan_info);
81 	if (vlan_info) {
82 		return vlan_group_get_device(&vlan_info->grp,
138 static void vlan_info_free(struct vlan_info *vlan_info)
140 	vlan_group_free(&vlan_info->grp);
141 	kfree(vlan_info);
146 	vlan_info_free(container_of(rcu, struct vlan_info, rcu));
149 static struct vlan_info *vlan_info_alloc(struct net_device *dev)
151 	struct vlan_info *vlan_info;
153 	vlan_info = kzalloc(sizeof(struct vlan_info), GFP_KERNEL);
154 	if (!vlan_info)
157 	vlan_info->real_dev = dev;
158 	INIT_LIST_HEAD(&vlan_info->vid_list);
159 	return vlan_info;
180 static struct vlan_vid_info *vlan_vid_info_get(struct vlan_info *vlan_info,
185 	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
232 	struct vlan_info *vlan_info;
238 	vlan_info = rtnl_dereference(dev->vlan_info);
239 	if (!vlan_info)
242 	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
243 		vdev = vlan_group_get_device(&vlan_info->grp, vid_info->proto,
254 int vlan_filter_push_vids(struct vlan_info *vlan_info, __be16 proto)
256 	struct net_device *real_dev = vlan_info->real_dev;
260 	list_for_each_entry(vlan_vid_info, &vlan_info->vid_list, list) {
273 					     &vlan_info->vid_list, list) {
283 void vlan_filter_drop_vids(struct vlan_info *vlan_info, __be16 proto)
287 	list_for_each_entry(vlan_vid_info, &vlan_info->vid_list, list)
289 			vlan_kill_rx_filter_info(vlan_info->real_dev,
295 static int __vlan_vid_add(struct vlan_info *vlan_info, __be16 proto, u16 vid,
298 	struct net_device *dev = vlan_info->real_dev;
312 	list_add(&vid_info->list, &vlan_info->vid_list);
313 	vlan_info->nr_vids++;
320 	struct vlan_info *vlan_info;
327 	vlan_info = rtnl_dereference(dev->vlan_info);
328 	if (!vlan_info) {
329 		vlan_info = vlan_info_alloc(dev);
330 		if (!vlan_info)
334 	vid_info = vlan_vid_info_get(vlan_info, proto, vid);
336 		err = __vlan_vid_add(vlan_info, proto, vid, &vid_info);
343 		rcu_assign_pointer(dev->vlan_info, vlan_info);
349 		kfree(vlan_info);
354 static void __vlan_vid_del(struct vlan_info *vlan_info,
357 	struct net_device *dev = vlan_info->real_dev;
368 	vlan_info->nr_vids--;
373 	struct vlan_info *vlan_info;
378 	vlan_info = rtnl_dereference(dev->vlan_info);
379 	if (!vlan_info)
382 	vid_info = vlan_vid_info_get(vlan_info, proto, vid);
387 		__vlan_vid_del(vlan_info, vid_info);
388 		if (vlan_info->nr_vids == 0) {
389 			RCU_INIT_POINTER(dev->vlan_info, NULL);
390 			call_rcu(&vlan_info->rcu, vlan_info_rcu_free);
400 	struct vlan_info *vlan_info;
405 	vlan_info = rtnl_dereference(by_dev->vlan_info);
406 	if (!vlan_info)
409 	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
420 					     &vlan_info->vid_list,
435 	struct vlan_info *vlan_info;
439 	vlan_info = rtnl_dereference(by_dev->vlan_info);
440 	if (!vlan_info)
443 	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
453 	struct vlan_info *vlan_info;
457 	vlan_info = rtnl_dereference(dev->vlan_info);
458 	if (!vlan_info)
460 	return vlan_info->grp.nr_vlan_devs ? true : false;