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TOMOYO Linux Cross Reference
Linux/net/8021q/vlan.c

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  1 /*
  2  * INET         802.1Q VLAN
  3  *              Ethernet-type device handling.
  4  *
  5  * Authors:     Ben Greear <greearb@candelatech.com>
  6  *              Please send support related email to: netdev@vger.kernel.org
  7  *              VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
  8  *
  9  * Fixes:
 10  *              Fix for packet capture - Nick Eggleston <nick@dccinc.com>;
 11  *              Add HW acceleration hooks - David S. Miller <davem@redhat.com>;
 12  *              Correct all the locking - David S. Miller <davem@redhat.com>;
 13  *              Use hash table for VLAN groups - David S. Miller <davem@redhat.com>
 14  *
 15  *              This program is free software; you can redistribute it and/or
 16  *              modify it under the terms of the GNU General Public License
 17  *              as published by the Free Software Foundation; either version
 18  *              2 of the License, or (at your option) any later version.
 19  */
 20 
 21 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 22 
 23 #include <linux/capability.h>
 24 #include <linux/module.h>
 25 #include <linux/netdevice.h>
 26 #include <linux/skbuff.h>
 27 #include <linux/slab.h>
 28 #include <linux/init.h>
 29 #include <linux/rculist.h>
 30 #include <net/p8022.h>
 31 #include <net/arp.h>
 32 #include <linux/rtnetlink.h>
 33 #include <linux/notifier.h>
 34 #include <net/rtnetlink.h>
 35 #include <net/net_namespace.h>
 36 #include <net/netns/generic.h>
 37 #include <asm/uaccess.h>
 38 
 39 #include <linux/if_vlan.h>
 40 #include "vlan.h"
 41 #include "vlanproc.h"
 42 
 43 #define DRV_VERSION "1.8"
 44 
 45 /* Global VLAN variables */
 46 
 47 int vlan_net_id __read_mostly;
 48 
 49 const char vlan_fullname[] = "802.1Q VLAN Support";
 50 const char vlan_version[] = DRV_VERSION;
 51 
 52 /* End of global variables definitions. */
 53 
 54 static int vlan_group_prealloc_vid(struct vlan_group *vg,
 55                                    __be16 vlan_proto, u16 vlan_id)
 56 {
 57         struct net_device **array;
 58         unsigned int pidx, vidx;
 59         unsigned int size;
 60 
 61         ASSERT_RTNL();
 62 
 63         pidx  = vlan_proto_idx(vlan_proto);
 64         vidx  = vlan_id / VLAN_GROUP_ARRAY_PART_LEN;
 65         array = vg->vlan_devices_arrays[pidx][vidx];
 66         if (array != NULL)
 67                 return 0;
 68 
 69         size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN;
 70         array = kzalloc(size, GFP_KERNEL);
 71         if (array == NULL)
 72                 return -ENOBUFS;
 73 
 74         vg->vlan_devices_arrays[pidx][vidx] = array;
 75         return 0;
 76 }
 77 
 78 void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 79 {
 80         struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
 81         struct net_device *real_dev = vlan->real_dev;
 82         struct vlan_info *vlan_info;
 83         struct vlan_group *grp;
 84         u16 vlan_id = vlan->vlan_id;
 85 
 86         ASSERT_RTNL();
 87 
 88         vlan_info = rtnl_dereference(real_dev->vlan_info);
 89         BUG_ON(!vlan_info);
 90 
 91         grp = &vlan_info->grp;
 92 
 93         grp->nr_vlan_devs--;
 94 
 95         if (vlan->flags & VLAN_FLAG_MVRP)
 96                 vlan_mvrp_request_leave(dev);
 97         if (vlan->flags & VLAN_FLAG_GVRP)
 98                 vlan_gvrp_request_leave(dev);
 99 
100         vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL);
101         /* Because unregister_netdevice_queue() makes sure at least one rcu
102          * grace period is respected before device freeing,
103          * we dont need to call synchronize_net() here.
104          */
105         unregister_netdevice_queue(dev, head);
106 
107         netdev_upper_dev_unlink(real_dev, dev);
108 
109         if (grp->nr_vlan_devs == 0) {
110                 vlan_mvrp_uninit_applicant(real_dev);
111                 vlan_gvrp_uninit_applicant(real_dev);
112         }
113 
114         /* Take it out of our own structures, but be sure to interlock with
115          * HW accelerating devices or SW vlan input packet processing if
116          * VLAN is not 0 (leave it there for 802.1p).
117          */
118         if (vlan_id)
119                 vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
120 
121         /* Get rid of the vlan's reference to real_dev */
122         dev_put(real_dev);
123 }
124 
125 int vlan_check_real_dev(struct net_device *real_dev,
126                         __be16 protocol, u16 vlan_id)
127 {
128         const char *name = real_dev->name;
129 
130         if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
131                 pr_info("VLANs not supported on %s\n", name);
132                 return -EOPNOTSUPP;
133         }
134 
135         if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL)
136                 return -EEXIST;
137 
138         return 0;
139 }
140 
141 int register_vlan_dev(struct net_device *dev)
142 {
143         struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
144         struct net_device *real_dev = vlan->real_dev;
145         u16 vlan_id = vlan->vlan_id;
146         struct vlan_info *vlan_info;
147         struct vlan_group *grp;
148         int err;
149 
150         err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id);
151         if (err)
152                 return err;
153 
154         vlan_info = rtnl_dereference(real_dev->vlan_info);
155         /* vlan_info should be there now. vlan_vid_add took care of it */
156         BUG_ON(!vlan_info);
157 
158         grp = &vlan_info->grp;
159         if (grp->nr_vlan_devs == 0) {
160                 err = vlan_gvrp_init_applicant(real_dev);
161                 if (err < 0)
162                         goto out_vid_del;
163                 err = vlan_mvrp_init_applicant(real_dev);
164                 if (err < 0)
165                         goto out_uninit_gvrp;
166         }
167 
168         err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id);
169         if (err < 0)
170                 goto out_uninit_mvrp;
171 
172         err = netdev_upper_dev_link(real_dev, dev);
173         if (err)
174                 goto out_uninit_mvrp;
175 
176         err = register_netdevice(dev);
177         if (err < 0)
178                 goto out_upper_dev_unlink;
179 
180         /* Account for reference in struct vlan_dev_priv */
181         dev_hold(real_dev);
182 
183         netif_stacked_transfer_operstate(real_dev, dev);
184         linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
185 
186         /* So, got the sucker initialized, now lets place
187          * it into our local structure.
188          */
189         vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev);
190         grp->nr_vlan_devs++;
191 
192         return 0;
193 
194 out_upper_dev_unlink:
195         netdev_upper_dev_unlink(real_dev, dev);
196 out_uninit_mvrp:
197         if (grp->nr_vlan_devs == 0)
198                 vlan_mvrp_uninit_applicant(real_dev);
199 out_uninit_gvrp:
200         if (grp->nr_vlan_devs == 0)
201                 vlan_gvrp_uninit_applicant(real_dev);
202 out_vid_del:
203         vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
204         return err;
205 }
206 
207 /*  Attach a VLAN device to a mac address (ie Ethernet Card).
208  *  Returns 0 if the device was created or a negative error code otherwise.
209  */
210 static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
211 {
212         struct net_device *new_dev;
213         struct net *net = dev_net(real_dev);
214         struct vlan_net *vn = net_generic(net, vlan_net_id);
215         char name[IFNAMSIZ];
216         int err;
217 
218         if (vlan_id >= VLAN_VID_MASK)
219                 return -ERANGE;
220 
221         err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id);
222         if (err < 0)
223                 return err;
224 
225         /* Gotta set up the fields for the device. */
226         switch (vn->name_type) {
227         case VLAN_NAME_TYPE_RAW_PLUS_VID:
228                 /* name will look like:  eth1.0005 */
229                 snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id);
230                 break;
231         case VLAN_NAME_TYPE_PLUS_VID_NO_PAD:
232                 /* Put our vlan.VID in the name.
233                  * Name will look like:  vlan5
234                  */
235                 snprintf(name, IFNAMSIZ, "vlan%i", vlan_id);
236                 break;
237         case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD:
238                 /* Put our vlan.VID in the name.
239                  * Name will look like:  eth0.5
240                  */
241                 snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id);
242                 break;
243         case VLAN_NAME_TYPE_PLUS_VID:
244                 /* Put our vlan.VID in the name.
245                  * Name will look like:  vlan0005
246                  */
247         default:
248                 snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
249         }
250 
251         new_dev = alloc_netdev(sizeof(struct vlan_dev_priv), name, vlan_setup);
252 
253         if (new_dev == NULL)
254                 return -ENOBUFS;
255 
256         dev_net_set(new_dev, net);
257         /* need 4 bytes for extra VLAN header info,
258          * hope the underlying device can handle it.
259          */
260         new_dev->mtu = real_dev->mtu;
261         new_dev->priv_flags |= (real_dev->priv_flags & IFF_UNICAST_FLT);
262 
263         vlan_dev_priv(new_dev)->vlan_proto = htons(ETH_P_8021Q);
264         vlan_dev_priv(new_dev)->vlan_id = vlan_id;
265         vlan_dev_priv(new_dev)->real_dev = real_dev;
266         vlan_dev_priv(new_dev)->dent = NULL;
267         vlan_dev_priv(new_dev)->flags = VLAN_FLAG_REORDER_HDR;
268 
269         new_dev->rtnl_link_ops = &vlan_link_ops;
270         err = register_vlan_dev(new_dev);
271         if (err < 0)
272                 goto out_free_newdev;
273 
274         return 0;
275 
276 out_free_newdev:
277         if (new_dev->reg_state == NETREG_UNINITIALIZED)
278                 free_netdev(new_dev);
279         return err;
280 }
281 
282 static void vlan_sync_address(struct net_device *dev,
283                               struct net_device *vlandev)
284 {
285         struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
286 
287         /* May be called without an actual change */
288         if (ether_addr_equal(vlan->real_dev_addr, dev->dev_addr))
289                 return;
290 
291         /* vlan address was different from the old address and is equal to
292          * the new address */
293         if (!ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
294             ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
295                 dev_uc_del(dev, vlandev->dev_addr);
296 
297         /* vlan address was equal to the old address and is different from
298          * the new address */
299         if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
300             !ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
301                 dev_uc_add(dev, vlandev->dev_addr);
302 
303         memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
304 }
305 
306 static void vlan_transfer_features(struct net_device *dev,
307                                    struct net_device *vlandev)
308 {
309         struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
310 
311         vlandev->gso_max_size = dev->gso_max_size;
312 
313         if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto))
314                 vlandev->hard_header_len = dev->hard_header_len;
315         else
316                 vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN;
317 
318 #if IS_ENABLED(CONFIG_FCOE)
319         vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid;
320 #endif
321 
322         netdev_update_features(vlandev);
323 }
324 
325 static void __vlan_device_event(struct net_device *dev, unsigned long event)
326 {
327         switch (event) {
328         case NETDEV_CHANGENAME:
329                 vlan_proc_rem_dev(dev);
330                 if (vlan_proc_add_dev(dev) < 0)
331                         pr_warn("failed to change proc name for %s\n",
332                                 dev->name);
333                 break;
334         case NETDEV_REGISTER:
335                 if (vlan_proc_add_dev(dev) < 0)
336                         pr_warn("failed to add proc entry for %s\n", dev->name);
337                 break;
338         case NETDEV_UNREGISTER:
339                 vlan_proc_rem_dev(dev);
340                 break;
341         }
342 }
343 
344 static int vlan_device_event(struct notifier_block *unused, unsigned long event,
345                              void *ptr)
346 {
347         struct net_device *dev = ptr;
348         struct vlan_group *grp;
349         struct vlan_info *vlan_info;
350         int i, flgs;
351         struct net_device *vlandev;
352         struct vlan_dev_priv *vlan;
353         bool last = false;
354         LIST_HEAD(list);
355 
356         if (is_vlan_dev(dev))
357                 __vlan_device_event(dev, event);
358 
359         if ((event == NETDEV_UP) &&
360             (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) {
361                 pr_info("adding VLAN 0 to HW filter on device %s\n",
362                         dev->name);
363                 vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
364         }
365 
366         vlan_info = rtnl_dereference(dev->vlan_info);
367         if (!vlan_info)
368                 goto out;
369         grp = &vlan_info->grp;
370 
371         /* It is OK that we do not hold the group lock right now,
372          * as we run under the RTNL lock.
373          */
374 
375         switch (event) {
376         case NETDEV_CHANGE:
377                 /* Propagate real device state to vlan devices */
378                 vlan_group_for_each_dev(grp, i, vlandev)
379                         netif_stacked_transfer_operstate(dev, vlandev);
380                 break;
381 
382         case NETDEV_CHANGEADDR:
383                 /* Adjust unicast filters on underlying device */
384                 vlan_group_for_each_dev(grp, i, vlandev) {
385                         flgs = vlandev->flags;
386                         if (!(flgs & IFF_UP))
387                                 continue;
388 
389                         vlan_sync_address(dev, vlandev);
390                 }
391                 break;
392 
393         case NETDEV_CHANGEMTU:
394                 vlan_group_for_each_dev(grp, i, vlandev) {
395                         if (vlandev->mtu <= dev->mtu)
396                                 continue;
397 
398                         dev_set_mtu(vlandev, dev->mtu);
399                 }
400                 break;
401 
402         case NETDEV_FEAT_CHANGE:
403                 /* Propagate device features to underlying device */
404                 vlan_group_for_each_dev(grp, i, vlandev)
405                         vlan_transfer_features(dev, vlandev);
406                 break;
407 
408         case NETDEV_DOWN:
409                 if (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
410                         vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
411 
412                 /* Put all VLANs for this dev in the down state too.  */
413                 vlan_group_for_each_dev(grp, i, vlandev) {
414                         flgs = vlandev->flags;
415                         if (!(flgs & IFF_UP))
416                                 continue;
417 
418                         vlan = vlan_dev_priv(vlandev);
419                         if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
420                                 dev_change_flags(vlandev, flgs & ~IFF_UP);
421                         netif_stacked_transfer_operstate(dev, vlandev);
422                 }
423                 break;
424 
425         case NETDEV_UP:
426                 /* Put all VLANs for this dev in the up state too.  */
427                 vlan_group_for_each_dev(grp, i, vlandev) {
428                         flgs = vlandev->flags;
429                         if (flgs & IFF_UP)
430                                 continue;
431 
432                         vlan = vlan_dev_priv(vlandev);
433                         if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
434                                 dev_change_flags(vlandev, flgs | IFF_UP);
435                         netif_stacked_transfer_operstate(dev, vlandev);
436                 }
437                 break;
438 
439         case NETDEV_UNREGISTER:
440                 /* twiddle thumbs on netns device moves */
441                 if (dev->reg_state != NETREG_UNREGISTERING)
442                         break;
443 
444                 vlan_group_for_each_dev(grp, i, vlandev) {
445                         /* removal of last vid destroys vlan_info, abort
446                          * afterwards */
447                         if (vlan_info->nr_vids == 1)
448                                 last = true;
449 
450                         unregister_vlan_dev(vlandev, &list);
451                         if (last)
452                                 break;
453                 }
454                 unregister_netdevice_many(&list);
455                 break;
456 
457         case NETDEV_PRE_TYPE_CHANGE:
458                 /* Forbid underlaying device to change its type. */
459                 if (vlan_uses_dev(dev))
460                         return NOTIFY_BAD;
461                 break;
462 
463         case NETDEV_NOTIFY_PEERS:
464         case NETDEV_BONDING_FAILOVER:
465                 /* Propagate to vlan devices */
466                 vlan_group_for_each_dev(grp, i, vlandev)
467                         call_netdevice_notifiers(event, vlandev);
468                 break;
469         }
470 
471 out:
472         return NOTIFY_DONE;
473 }
474 
475 static struct notifier_block vlan_notifier_block __read_mostly = {
476         .notifier_call = vlan_device_event,
477 };
478 
479 /*
480  *      VLAN IOCTL handler.
481  *      o execute requested action or pass command to the device driver
482  *   arg is really a struct vlan_ioctl_args __user *.
483  */
484 static int vlan_ioctl_handler(struct net *net, void __user *arg)
485 {
486         int err;
487         struct vlan_ioctl_args args;
488         struct net_device *dev = NULL;
489 
490         if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args)))
491                 return -EFAULT;
492 
493         /* Null terminate this sucker, just in case. */
494         args.device1[23] = 0;
495         args.u.device2[23] = 0;
496 
497         rtnl_lock();
498 
499         switch (args.cmd) {
500         case SET_VLAN_INGRESS_PRIORITY_CMD:
501         case SET_VLAN_EGRESS_PRIORITY_CMD:
502         case SET_VLAN_FLAG_CMD:
503         case ADD_VLAN_CMD:
504         case DEL_VLAN_CMD:
505         case GET_VLAN_REALDEV_NAME_CMD:
506         case GET_VLAN_VID_CMD:
507                 err = -ENODEV;
508                 dev = __dev_get_by_name(net, args.device1);
509                 if (!dev)
510                         goto out;
511 
512                 err = -EINVAL;
513                 if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev))
514                         goto out;
515         }
516 
517         switch (args.cmd) {
518         case SET_VLAN_INGRESS_PRIORITY_CMD:
519                 err = -EPERM;
520                 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
521                         break;
522                 vlan_dev_set_ingress_priority(dev,
523                                               args.u.skb_priority,
524                                               args.vlan_qos);
525                 err = 0;
526                 break;
527 
528         case SET_VLAN_EGRESS_PRIORITY_CMD:
529                 err = -EPERM;
530                 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
531                         break;
532                 err = vlan_dev_set_egress_priority(dev,
533                                                    args.u.skb_priority,
534                                                    args.vlan_qos);
535                 break;
536 
537         case SET_VLAN_FLAG_CMD:
538                 err = -EPERM;
539                 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
540                         break;
541                 err = vlan_dev_change_flags(dev,
542                                             args.vlan_qos ? args.u.flag : 0,
543                                             args.u.flag);
544                 break;
545 
546         case SET_VLAN_NAME_TYPE_CMD:
547                 err = -EPERM;
548                 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
549                         break;
550                 if ((args.u.name_type >= 0) &&
551                     (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) {
552                         struct vlan_net *vn;
553 
554                         vn = net_generic(net, vlan_net_id);
555                         vn->name_type = args.u.name_type;
556                         err = 0;
557                 } else {
558                         err = -EINVAL;
559                 }
560                 break;
561 
562         case ADD_VLAN_CMD:
563                 err = -EPERM;
564                 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
565                         break;
566                 err = register_vlan_device(dev, args.u.VID);
567                 break;
568 
569         case DEL_VLAN_CMD:
570                 err = -EPERM;
571                 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
572                         break;
573                 unregister_vlan_dev(dev, NULL);
574                 err = 0;
575                 break;
576 
577         case GET_VLAN_REALDEV_NAME_CMD:
578                 err = 0;
579                 vlan_dev_get_realdev_name(dev, args.u.device2);
580                 if (copy_to_user(arg, &args,
581                                  sizeof(struct vlan_ioctl_args)))
582                         err = -EFAULT;
583                 break;
584 
585         case GET_VLAN_VID_CMD:
586                 err = 0;
587                 args.u.VID = vlan_dev_vlan_id(dev);
588                 if (copy_to_user(arg, &args,
589                                  sizeof(struct vlan_ioctl_args)))
590                       err = -EFAULT;
591                 break;
592 
593         default:
594                 err = -EOPNOTSUPP;
595                 break;
596         }
597 out:
598         rtnl_unlock();
599         return err;
600 }
601 
602 static int __net_init vlan_init_net(struct net *net)
603 {
604         struct vlan_net *vn = net_generic(net, vlan_net_id);
605         int err;
606 
607         vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
608 
609         err = vlan_proc_init(net);
610 
611         return err;
612 }
613 
614 static void __net_exit vlan_exit_net(struct net *net)
615 {
616         vlan_proc_cleanup(net);
617 }
618 
619 static struct pernet_operations vlan_net_ops = {
620         .init = vlan_init_net,
621         .exit = vlan_exit_net,
622         .id   = &vlan_net_id,
623         .size = sizeof(struct vlan_net),
624 };
625 
626 static int __init vlan_proto_init(void)
627 {
628         int err;
629 
630         pr_info("%s v%s\n", vlan_fullname, vlan_version);
631 
632         err = register_pernet_subsys(&vlan_net_ops);
633         if (err < 0)
634                 goto err0;
635 
636         err = register_netdevice_notifier(&vlan_notifier_block);
637         if (err < 0)
638                 goto err2;
639 
640         err = vlan_gvrp_init();
641         if (err < 0)
642                 goto err3;
643 
644         err = vlan_mvrp_init();
645         if (err < 0)
646                 goto err4;
647 
648         err = vlan_netlink_init();
649         if (err < 0)
650                 goto err5;
651 
652         vlan_ioctl_set(vlan_ioctl_handler);
653         return 0;
654 
655 err5:
656         vlan_mvrp_uninit();
657 err4:
658         vlan_gvrp_uninit();
659 err3:
660         unregister_netdevice_notifier(&vlan_notifier_block);
661 err2:
662         unregister_pernet_subsys(&vlan_net_ops);
663 err0:
664         return err;
665 }
666 
667 static void __exit vlan_cleanup_module(void)
668 {
669         vlan_ioctl_set(NULL);
670         vlan_netlink_fini();
671 
672         unregister_netdevice_notifier(&vlan_notifier_block);
673 
674         unregister_pernet_subsys(&vlan_net_ops);
675         rcu_barrier(); /* Wait for completion of call_rcu()'s */
676 
677         vlan_mvrp_uninit();
678         vlan_gvrp_uninit();
679 }
680 
681 module_init(vlan_proto_init);
682 module_exit(vlan_cleanup_module);
683 
684 MODULE_LICENSE("GPL");
685 MODULE_VERSION(DRV_VERSION);
686 

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