1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * INET 802.1Q VLAN
4 * Ethernet-type device handling.
5 *
6 * Authors: Ben Greear <greearb@candelatech.com>
7 * Please send support related email to: netdev@vger.kernel.org
8 * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
9 *
10 * Fixes:
11 * Fix for packet capture - Nick Eggleston <nick@dccinc.com>;
12 * Add HW acceleration hooks - David S. Miller <davem@redhat.com>;
13 * Correct all the locking - David S. Miller <davem@redhat.com>;
14 * Use hash table for VLAN groups - David S. Miller <davem@redhat.com>
15 */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/capability.h>
20 #include <linux/module.h>
21 #include <linux/netdevice.h>
22 #include <linux/skbuff.h>
23 #include <linux/slab.h>
24 #include <linux/init.h>
25 #include <linux/rculist.h>
26 #include <net/arp.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/notifier.h>
29 #include <net/rtnetlink.h>
30 #include <net/net_namespace.h>
31 #include <net/netns/generic.h>
32 #include <linux/uaccess.h>
33
34 #include <linux/if_vlan.h>
35 #include "vlan.h"
36 #include "vlanproc.h"
37
38 #define DRV_VERSION "1.8"
39
40 /* Global VLAN variables */
41
42 unsigned int vlan_net_id __read_mostly;
43
44 const char vlan_fullname[] = "802.1Q VLAN Support";
45 const char vlan_version[] = DRV_VERSION;
46
47 /* End of global variables definitions. */
48
vlan_group_prealloc_vid(struct vlan_group * vg,__be16 vlan_proto,u16 vlan_id)49 static int vlan_group_prealloc_vid(struct vlan_group *vg,
50 __be16 vlan_proto, u16 vlan_id)
51 {
52 struct net_device **array;
53 unsigned int vidx;
54 unsigned int size;
55 int pidx;
56
57 ASSERT_RTNL();
58
59 pidx = vlan_proto_idx(vlan_proto);
60 if (pidx < 0)
61 return -EINVAL;
62
63 vidx = vlan_id / VLAN_GROUP_ARRAY_PART_LEN;
64 array = vg->vlan_devices_arrays[pidx][vidx];
65 if (array != NULL)
66 return 0;
67
68 size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN;
69 array = kzalloc(size, GFP_KERNEL_ACCOUNT);
70 if (array == NULL)
71 return -ENOBUFS;
72
73 /* paired with smp_rmb() in __vlan_group_get_device() */
74 smp_wmb();
75
76 vg->vlan_devices_arrays[pidx][vidx] = array;
77 return 0;
78 }
79
vlan_stacked_transfer_operstate(const struct net_device * rootdev,struct net_device * dev,struct vlan_dev_priv * vlan)80 void vlan_stacked_transfer_operstate(const struct net_device *rootdev,
81 struct net_device *dev,
82 struct vlan_dev_priv *vlan)
83 {
84 if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
85 netif_stacked_transfer_operstate(rootdev, dev);
86 }
87
unregister_vlan_dev(struct net_device * dev,struct list_head * head)88 void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
89 {
90 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
91 struct net_device *real_dev = vlan->real_dev;
92 struct vlan_info *vlan_info;
93 struct vlan_group *grp;
94 u16 vlan_id = vlan->vlan_id;
95
96 ASSERT_RTNL();
97
98 vlan_info = rtnl_dereference(real_dev->vlan_info);
99 BUG_ON(!vlan_info);
100
101 grp = &vlan_info->grp;
102
103 grp->nr_vlan_devs--;
104
105 if (vlan->flags & VLAN_FLAG_MVRP)
106 vlan_mvrp_request_leave(dev);
107 if (vlan->flags & VLAN_FLAG_GVRP)
108 vlan_gvrp_request_leave(dev);
109
110 vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL);
111
112 netdev_upper_dev_unlink(real_dev, dev);
113 /* Because unregister_netdevice_queue() makes sure at least one rcu
114 * grace period is respected before device freeing,
115 * we dont need to call synchronize_net() here.
116 */
117 unregister_netdevice_queue(dev, head);
118
119 if (grp->nr_vlan_devs == 0) {
120 vlan_mvrp_uninit_applicant(real_dev);
121 vlan_gvrp_uninit_applicant(real_dev);
122 }
123
124 vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
125 }
126
vlan_check_real_dev(struct net_device * real_dev,__be16 protocol,u16 vlan_id,struct netlink_ext_ack * extack)127 int vlan_check_real_dev(struct net_device *real_dev,
128 __be16 protocol, u16 vlan_id,
129 struct netlink_ext_ack *extack)
130 {
131 const char *name = real_dev->name;
132
133 if (real_dev->features & NETIF_F_VLAN_CHALLENGED ||
134 real_dev->type != ARPHRD_ETHER) {
135 pr_info("VLANs not supported on %s\n", name);
136 NL_SET_ERR_MSG_MOD(extack, "VLANs not supported on device");
137 return -EOPNOTSUPP;
138 }
139
140 if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) {
141 NL_SET_ERR_MSG_MOD(extack, "VLAN device already exists");
142 return -EEXIST;
143 }
144
145 return 0;
146 }
147
register_vlan_dev(struct net_device * dev,struct netlink_ext_ack * extack)148 int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack)
149 {
150 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
151 struct net_device *real_dev = vlan->real_dev;
152 u16 vlan_id = vlan->vlan_id;
153 struct vlan_info *vlan_info;
154 struct vlan_group *grp;
155 int err;
156
157 err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id);
158 if (err)
159 return err;
160
161 vlan_info = rtnl_dereference(real_dev->vlan_info);
162 /* vlan_info should be there now. vlan_vid_add took care of it */
163 BUG_ON(!vlan_info);
164
165 grp = &vlan_info->grp;
166 if (grp->nr_vlan_devs == 0) {
167 err = vlan_gvrp_init_applicant(real_dev);
168 if (err < 0)
169 goto out_vid_del;
170 err = vlan_mvrp_init_applicant(real_dev);
171 if (err < 0)
172 goto out_uninit_gvrp;
173 }
174
175 err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id);
176 if (err < 0)
177 goto out_uninit_mvrp;
178
179 err = register_netdevice(dev);
180 if (err < 0)
181 goto out_uninit_mvrp;
182
183 err = netdev_upper_dev_link(real_dev, dev, extack);
184 if (err)
185 goto out_unregister_netdev;
186
187 vlan_stacked_transfer_operstate(real_dev, dev, vlan);
188 linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
189
190 /* So, got the sucker initialized, now lets place
191 * it into our local structure.
192 */
193 vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev);
194 grp->nr_vlan_devs++;
195
196 netdev_update_features(dev);
197
198 return 0;
199
200 out_unregister_netdev:
201 unregister_netdevice(dev);
202 out_uninit_mvrp:
203 if (grp->nr_vlan_devs == 0)
204 vlan_mvrp_uninit_applicant(real_dev);
205 out_uninit_gvrp:
206 if (grp->nr_vlan_devs == 0)
207 vlan_gvrp_uninit_applicant(real_dev);
208 out_vid_del:
209 vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
210 return err;
211 }
212
213 /* Attach a VLAN device to a mac address (ie Ethernet Card).
214 * Returns 0 if the device was created or a negative error code otherwise.
215 */
register_vlan_device(struct net_device * real_dev,u16 vlan_id)216 static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
217 {
218 struct net_device *new_dev;
219 struct vlan_dev_priv *vlan;
220 struct net *net = dev_net(real_dev);
221 struct vlan_net *vn = net_generic(net, vlan_net_id);
222 char name[IFNAMSIZ];
223 int err;
224
225 if (vlan_id >= VLAN_VID_MASK)
226 return -ERANGE;
227
228 err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id,
229 NULL);
230 if (err < 0)
231 return err;
232
233 /* Gotta set up the fields for the device. */
234 switch (vn->name_type) {
235 case VLAN_NAME_TYPE_RAW_PLUS_VID:
236 /* name will look like: eth1.0005 */
237 snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id);
238 break;
239 case VLAN_NAME_TYPE_PLUS_VID_NO_PAD:
240 /* Put our vlan.VID in the name.
241 * Name will look like: vlan5
242 */
243 snprintf(name, IFNAMSIZ, "vlan%i", vlan_id);
244 break;
245 case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD:
246 /* Put our vlan.VID in the name.
247 * Name will look like: eth0.5
248 */
249 snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id);
250 break;
251 case VLAN_NAME_TYPE_PLUS_VID:
252 /* Put our vlan.VID in the name.
253 * Name will look like: vlan0005
254 */
255 default:
256 snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
257 }
258
259 new_dev = alloc_netdev(sizeof(struct vlan_dev_priv), name,
260 NET_NAME_UNKNOWN, vlan_setup);
261
262 if (new_dev == NULL)
263 return -ENOBUFS;
264
265 dev_net_set(new_dev, net);
266 /* need 4 bytes for extra VLAN header info,
267 * hope the underlying device can handle it.
268 */
269 new_dev->mtu = real_dev->mtu;
270
271 vlan = vlan_dev_priv(new_dev);
272 vlan->vlan_proto = htons(ETH_P_8021Q);
273 vlan->vlan_id = vlan_id;
274 vlan->real_dev = real_dev;
275 vlan->dent = NULL;
276 vlan->flags = VLAN_FLAG_REORDER_HDR;
277
278 new_dev->rtnl_link_ops = &vlan_link_ops;
279 err = register_vlan_dev(new_dev, NULL);
280 if (err < 0)
281 goto out_free_newdev;
282
283 return 0;
284
285 out_free_newdev:
286 free_netdev(new_dev);
287 return err;
288 }
289
vlan_sync_address(struct net_device * dev,struct net_device * vlandev)290 static void vlan_sync_address(struct net_device *dev,
291 struct net_device *vlandev)
292 {
293 struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
294
295 /* May be called without an actual change */
296 if (ether_addr_equal(vlan->real_dev_addr, dev->dev_addr))
297 return;
298
299 /* vlan continues to inherit address of lower device */
300 if (vlan_dev_inherit_address(vlandev, dev))
301 goto out;
302
303 /* vlan address was different from the old address and is equal to
304 * the new address */
305 if (!ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
306 ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
307 dev_uc_del(dev, vlandev->dev_addr);
308
309 /* vlan address was equal to the old address and is different from
310 * the new address */
311 if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
312 !ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
313 dev_uc_add(dev, vlandev->dev_addr);
314
315 out:
316 ether_addr_copy(vlan->real_dev_addr, dev->dev_addr);
317 }
318
__vlan_device_event(struct net_device * dev,unsigned long event)319 static int __vlan_device_event(struct net_device *dev, unsigned long event)
320 {
321 int err = 0;
322
323 switch (event) {
324 case NETDEV_CHANGENAME:
325 vlan_proc_rem_dev(dev);
326 err = vlan_proc_add_dev(dev);
327 break;
328 case NETDEV_REGISTER:
329 err = vlan_proc_add_dev(dev);
330 break;
331 case NETDEV_UNREGISTER:
332 vlan_proc_rem_dev(dev);
333 break;
334 }
335
336 return err;
337 }
338
vlan_vid0_add(struct net_device * dev)339 static void vlan_vid0_add(struct net_device *dev)
340 {
341 struct vlan_info *vlan_info;
342 int err;
343
344 if (!(dev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
345 return;
346
347 pr_info("adding VLAN 0 to HW filter on device %s\n", dev->name);
348
349 err = vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
350 if (err)
351 return;
352
353 vlan_info = rtnl_dereference(dev->vlan_info);
354 vlan_info->auto_vid0 = true;
355 }
356
vlan_vid0_del(struct net_device * dev)357 static void vlan_vid0_del(struct net_device *dev)
358 {
359 struct vlan_info *vlan_info = rtnl_dereference(dev->vlan_info);
360
361 if (!vlan_info || !vlan_info->auto_vid0)
362 return;
363
364 vlan_info->auto_vid0 = false;
365 vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
366 }
367
vlan_device_event(struct notifier_block * unused,unsigned long event,void * ptr)368 static int vlan_device_event(struct notifier_block *unused, unsigned long event,
369 void *ptr)
370 {
371 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
372 struct vlan_group *grp;
373 struct vlan_info *vlan_info;
374 int i, flgs;
375 struct net_device *vlandev;
376 bool last = false;
377 LIST_HEAD(list);
378 int err;
379
380 if (is_vlan_dev(dev)) {
381 int err = __vlan_device_event(dev, event);
382
383 if (err)
384 return notifier_from_errno(err);
385 }
386
387 if (event == NETDEV_UP)
388 vlan_vid0_add(dev);
389 else if (event == NETDEV_DOWN)
390 vlan_vid0_del(dev);
391
392 vlan_info = rtnl_dereference(dev->vlan_info);
393 if (!vlan_info)
394 goto out;
395 grp = &vlan_info->grp;
396
397 /* It is OK that we do not hold the group lock right now,
398 * as we run under the RTNL lock.
399 */
400
401 switch (event) {
402 case NETDEV_CHANGE:
403 /* Propagate real device state to vlan devices */
404 vlan_group_for_each_dev(grp, i, vlandev)
405 vlan_stacked_transfer_operstate(dev, vlandev,
406 vlan_dev_priv(vlandev));
407 break;
408
409 case NETDEV_CHANGEADDR:
410 /* Adjust unicast filters on underlying device */
411 vlan_group_for_each_dev(grp, i, vlandev) {
412 flgs = vlandev->flags;
413 if (!(flgs & IFF_UP))
414 continue;
415
416 vlan_sync_address(dev, vlandev);
417 }
418 break;
419
420 case NETDEV_CHANGEMTU:
421 vlan_group_for_each_dev(grp, i, vlandev) {
422 if (vlandev->mtu <= dev->mtu)
423 continue;
424
425 netdev_work_sched(vlandev, VLAN_WORK_MTU);
426 }
427 break;
428
429 case NETDEV_FEAT_CHANGE:
430 vlan_group_for_each_dev(grp, i, vlandev)
431 netdev_work_sched(vlandev, VLAN_WORK_FEATURES);
432 break;
433
434 case NETDEV_DOWN:
435 case NETDEV_UP:
436 vlan_group_for_each_dev(grp, i, vlandev)
437 netdev_work_sched(vlandev, VLAN_WORK_LINK_STATE);
438 break;
439
440 case NETDEV_UNREGISTER:
441 /* twiddle thumbs on netns device moves */
442 if (dev->reg_state != NETREG_UNREGISTERING)
443 break;
444
445 vlan_group_for_each_dev(grp, i, vlandev) {
446 /* removal of last vid destroys vlan_info, abort
447 * afterwards */
448 if (vlan_info->nr_vids == 1)
449 last = true;
450
451 unregister_vlan_dev(vlandev, &list);
452 if (last)
453 break;
454 }
455 unregister_netdevice_many(&list);
456 break;
457
458 case NETDEV_PRE_TYPE_CHANGE:
459 /* Forbid underlaying device to change its type. */
460 if (vlan_uses_dev(dev))
461 return NOTIFY_BAD;
462 break;
463
464 case NETDEV_NOTIFY_PEERS:
465 case NETDEV_BONDING_FAILOVER:
466 case NETDEV_RESEND_IGMP:
467 /* Propagate to vlan devices */
468 vlan_group_for_each_dev(grp, i, vlandev)
469 call_netdevice_notifiers(event, vlandev);
470 break;
471
472 case NETDEV_CVLAN_FILTER_PUSH_INFO:
473 err = vlan_filter_push_vids(vlan_info, htons(ETH_P_8021Q));
474 if (err)
475 return notifier_from_errno(err);
476 break;
477
478 case NETDEV_CVLAN_FILTER_DROP_INFO:
479 vlan_filter_drop_vids(vlan_info, htons(ETH_P_8021Q));
480 break;
481
482 case NETDEV_SVLAN_FILTER_PUSH_INFO:
483 err = vlan_filter_push_vids(vlan_info, htons(ETH_P_8021AD));
484 if (err)
485 return notifier_from_errno(err);
486 break;
487
488 case NETDEV_SVLAN_FILTER_DROP_INFO:
489 vlan_filter_drop_vids(vlan_info, htons(ETH_P_8021AD));
490 break;
491 }
492
493 out:
494 return NOTIFY_DONE;
495 }
496
497 static struct notifier_block vlan_notifier_block __read_mostly = {
498 .notifier_call = vlan_device_event,
499 };
500
501 /*
502 * VLAN IOCTL handler.
503 * o execute requested action or pass command to the device driver
504 * arg is really a struct vlan_ioctl_args __user *.
505 */
vlan_ioctl_handler(struct net * net,void __user * arg)506 static int vlan_ioctl_handler(struct net *net, void __user *arg)
507 {
508 int err;
509 struct vlan_ioctl_args args;
510 struct net_device *dev = NULL;
511
512 if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args)))
513 return -EFAULT;
514
515 /* Null terminate this sucker, just in case. */
516 args.device1[sizeof(args.device1) - 1] = 0;
517 args.u.device2[sizeof(args.u.device2) - 1] = 0;
518
519 rtnl_lock();
520
521 switch (args.cmd) {
522 case SET_VLAN_INGRESS_PRIORITY_CMD:
523 case SET_VLAN_EGRESS_PRIORITY_CMD:
524 case SET_VLAN_FLAG_CMD:
525 case ADD_VLAN_CMD:
526 case DEL_VLAN_CMD:
527 case GET_VLAN_REALDEV_NAME_CMD:
528 case GET_VLAN_VID_CMD:
529 err = -ENODEV;
530 dev = __dev_get_by_name(net, args.device1);
531 if (!dev)
532 goto out;
533
534 err = -EINVAL;
535 if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev))
536 goto out;
537 }
538
539 switch (args.cmd) {
540 case SET_VLAN_INGRESS_PRIORITY_CMD:
541 err = -EPERM;
542 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
543 break;
544 vlan_dev_set_ingress_priority(dev,
545 args.u.skb_priority,
546 args.vlan_qos);
547 err = 0;
548 break;
549
550 case SET_VLAN_EGRESS_PRIORITY_CMD:
551 err = -EPERM;
552 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
553 break;
554 err = vlan_dev_set_egress_priority(dev,
555 args.u.skb_priority,
556 args.vlan_qos);
557 break;
558
559 case SET_VLAN_FLAG_CMD:
560 err = -EPERM;
561 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
562 break;
563 err = vlan_dev_change_flags(dev,
564 args.vlan_qos ? args.u.flag : 0,
565 args.u.flag);
566 break;
567
568 case SET_VLAN_NAME_TYPE_CMD:
569 err = -EPERM;
570 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
571 break;
572 if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) {
573 struct vlan_net *vn;
574
575 vn = net_generic(net, vlan_net_id);
576 vn->name_type = args.u.name_type;
577 err = 0;
578 } else {
579 err = -EINVAL;
580 }
581 break;
582
583 case ADD_VLAN_CMD:
584 err = -EPERM;
585 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
586 break;
587 err = register_vlan_device(dev, args.u.VID);
588 break;
589
590 case DEL_VLAN_CMD:
591 err = -EPERM;
592 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
593 break;
594 unregister_vlan_dev(dev, NULL);
595 err = 0;
596 break;
597
598 case GET_VLAN_REALDEV_NAME_CMD:
599 err = 0;
600 vlan_dev_get_realdev_name(dev, args.u.device2,
601 sizeof(args.u.device2));
602 if (copy_to_user(arg, &args,
603 sizeof(struct vlan_ioctl_args)))
604 err = -EFAULT;
605 break;
606
607 case GET_VLAN_VID_CMD:
608 err = 0;
609 args.u.VID = vlan_dev_vlan_id(dev);
610 if (copy_to_user(arg, &args,
611 sizeof(struct vlan_ioctl_args)))
612 err = -EFAULT;
613 break;
614
615 default:
616 err = -EOPNOTSUPP;
617 break;
618 }
619 out:
620 rtnl_unlock();
621 return err;
622 }
623
vlan_init_net(struct net * net)624 static int __net_init vlan_init_net(struct net *net)
625 {
626 struct vlan_net *vn = net_generic(net, vlan_net_id);
627 int err;
628
629 vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
630
631 err = vlan_proc_init(net);
632
633 return err;
634 }
635
vlan_exit_net(struct net * net)636 static void __net_exit vlan_exit_net(struct net *net)
637 {
638 vlan_proc_cleanup(net);
639 }
640
641 static struct pernet_operations vlan_net_ops = {
642 .init = vlan_init_net,
643 .exit = vlan_exit_net,
644 .id = &vlan_net_id,
645 .size = sizeof(struct vlan_net),
646 };
647
vlan_proto_init(void)648 static int __init vlan_proto_init(void)
649 {
650 int err;
651
652 pr_info("%s v%s\n", vlan_fullname, vlan_version);
653
654 err = register_pernet_subsys(&vlan_net_ops);
655 if (err < 0)
656 goto err0;
657
658 err = register_netdevice_notifier(&vlan_notifier_block);
659 if (err < 0)
660 goto err2;
661
662 err = vlan_gvrp_init();
663 if (err < 0)
664 goto err3;
665
666 err = vlan_mvrp_init();
667 if (err < 0)
668 goto err4;
669
670 err = vlan_netlink_init();
671 if (err < 0)
672 goto err5;
673
674 vlan_ioctl_set(vlan_ioctl_handler);
675 return 0;
676
677 err5:
678 vlan_mvrp_uninit();
679 err4:
680 vlan_gvrp_uninit();
681 err3:
682 unregister_netdevice_notifier(&vlan_notifier_block);
683 err2:
684 unregister_pernet_subsys(&vlan_net_ops);
685 err0:
686 return err;
687 }
688
vlan_cleanup_module(void)689 static void __exit vlan_cleanup_module(void)
690 {
691 vlan_ioctl_set(NULL);
692
693 vlan_netlink_fini();
694
695 unregister_netdevice_notifier(&vlan_notifier_block);
696
697 unregister_pernet_subsys(&vlan_net_ops);
698 rcu_barrier(); /* Wait for completion of call_rcu()'s */
699
700 vlan_mvrp_uninit();
701 vlan_gvrp_uninit();
702 }
703
704 module_init(vlan_proto_init);
705 module_exit(vlan_cleanup_module);
706
707 MODULE_DESCRIPTION("802.1Q/802.1ad VLAN Protocol");
708 MODULE_LICENSE("GPL");
709 MODULE_VERSION(DRV_VERSION);
710 MODULE_IMPORT_NS("NETDEV_INTERNAL");
711