vlan: kill ndo_vlan_rx_register
[linux-3.10.git] / net / 8021q / vlan.c
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 void vlan_group_free(struct vlan_group *grp)
55 {
56         int i;
57
58         for (i = 0; i < VLAN_GROUP_ARRAY_SPLIT_PARTS; i++)
59                 kfree(grp->vlan_devices_arrays[i]);
60         kfree(grp);
61 }
62
63 static struct vlan_group *vlan_group_alloc(struct net_device *real_dev)
64 {
65         struct vlan_group *grp;
66
67         grp = kzalloc(sizeof(struct vlan_group), GFP_KERNEL);
68         if (!grp)
69                 return NULL;
70
71         grp->real_dev = real_dev;
72         return grp;
73 }
74
75 static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
76 {
77         struct net_device **array;
78         unsigned int size;
79
80         ASSERT_RTNL();
81
82         array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
83         if (array != NULL)
84                 return 0;
85
86         size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN;
87         array = kzalloc(size, GFP_KERNEL);
88         if (array == NULL)
89                 return -ENOBUFS;
90
91         vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN] = array;
92         return 0;
93 }
94
95 static void vlan_rcu_free(struct rcu_head *rcu)
96 {
97         vlan_group_free(container_of(rcu, struct vlan_group, rcu));
98 }
99
100 void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
101 {
102         struct vlan_dev_info *vlan = vlan_dev_info(dev);
103         struct net_device *real_dev = vlan->real_dev;
104         const struct net_device_ops *ops = real_dev->netdev_ops;
105         struct vlan_group *grp;
106         u16 vlan_id = vlan->vlan_id;
107
108         ASSERT_RTNL();
109
110         grp = rtnl_dereference(real_dev->vlgrp);
111         BUG_ON(!grp);
112
113         /* Take it out of our own structures, but be sure to interlock with
114          * HW accelerating devices or SW vlan input packet processing if
115          * VLAN is not 0 (leave it there for 802.1p).
116          */
117         if (vlan_id && (real_dev->features & NETIF_F_HW_VLAN_FILTER))
118                 ops->ndo_vlan_rx_kill_vid(real_dev, vlan_id);
119
120         grp->nr_vlans--;
121
122         if (vlan->flags & VLAN_FLAG_GVRP)
123                 vlan_gvrp_request_leave(dev);
124
125         vlan_group_set_device(grp, vlan_id, NULL);
126         /* Because unregister_netdevice_queue() makes sure at least one rcu
127          * grace period is respected before device freeing,
128          * we dont need to call synchronize_net() here.
129          */
130         unregister_netdevice_queue(dev, head);
131
132         /* If the group is now empty, kill off the group. */
133         if (grp->nr_vlans == 0) {
134                 vlan_gvrp_uninit_applicant(real_dev);
135
136                 rcu_assign_pointer(real_dev->vlgrp, NULL);
137
138                 /* Free the group, after all cpu's are done. */
139                 call_rcu(&grp->rcu, vlan_rcu_free);
140         }
141
142         /* Get rid of the vlan's reference to real_dev */
143         dev_put(real_dev);
144 }
145
146 int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
147 {
148         const char *name = real_dev->name;
149         const struct net_device_ops *ops = real_dev->netdev_ops;
150
151         if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
152                 pr_info("VLANs not supported on %s\n", name);
153                 return -EOPNOTSUPP;
154         }
155
156         if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
157             (!ops->ndo_vlan_rx_add_vid || !ops->ndo_vlan_rx_kill_vid)) {
158                 pr_info("Device %s has buggy VLAN hw accel\n", name);
159                 return -EOPNOTSUPP;
160         }
161
162         if (vlan_find_dev(real_dev, vlan_id) != NULL)
163                 return -EEXIST;
164
165         return 0;
166 }
167
168 int register_vlan_dev(struct net_device *dev)
169 {
170         struct vlan_dev_info *vlan = vlan_dev_info(dev);
171         struct net_device *real_dev = vlan->real_dev;
172         const struct net_device_ops *ops = real_dev->netdev_ops;
173         u16 vlan_id = vlan->vlan_id;
174         struct vlan_group *grp, *ngrp = NULL;
175         int err;
176
177         grp = rtnl_dereference(real_dev->vlgrp);
178         if (!grp) {
179                 ngrp = grp = vlan_group_alloc(real_dev);
180                 if (!grp)
181                         return -ENOBUFS;
182                 err = vlan_gvrp_init_applicant(real_dev);
183                 if (err < 0)
184                         goto out_free_group;
185         }
186
187         err = vlan_group_prealloc_vid(grp, vlan_id);
188         if (err < 0)
189                 goto out_uninit_applicant;
190
191         err = register_netdevice(dev);
192         if (err < 0)
193                 goto out_uninit_applicant;
194
195         /* Account for reference in struct vlan_dev_info */
196         dev_hold(real_dev);
197
198         netif_stacked_transfer_operstate(real_dev, dev);
199         linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
200
201         /* So, got the sucker initialized, now lets place
202          * it into our local structure.
203          */
204         vlan_group_set_device(grp, vlan_id, dev);
205         grp->nr_vlans++;
206
207         if (ngrp) {
208                 rcu_assign_pointer(real_dev->vlgrp, ngrp);
209         }
210         if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
211                 ops->ndo_vlan_rx_add_vid(real_dev, vlan_id);
212
213         return 0;
214
215 out_uninit_applicant:
216         if (ngrp)
217                 vlan_gvrp_uninit_applicant(real_dev);
218 out_free_group:
219         if (ngrp) {
220                 /* Free the group, after all cpu's are done. */
221                 call_rcu(&ngrp->rcu, vlan_rcu_free);
222         }
223         return err;
224 }
225
226 /*  Attach a VLAN device to a mac address (ie Ethernet Card).
227  *  Returns 0 if the device was created or a negative error code otherwise.
228  */
229 static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
230 {
231         struct net_device *new_dev;
232         struct net *net = dev_net(real_dev);
233         struct vlan_net *vn = net_generic(net, vlan_net_id);
234         char name[IFNAMSIZ];
235         int err;
236
237         if (vlan_id >= VLAN_VID_MASK)
238                 return -ERANGE;
239
240         err = vlan_check_real_dev(real_dev, vlan_id);
241         if (err < 0)
242                 return err;
243
244         /* Gotta set up the fields for the device. */
245         switch (vn->name_type) {
246         case VLAN_NAME_TYPE_RAW_PLUS_VID:
247                 /* name will look like:  eth1.0005 */
248                 snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id);
249                 break;
250         case VLAN_NAME_TYPE_PLUS_VID_NO_PAD:
251                 /* Put our vlan.VID in the name.
252                  * Name will look like:  vlan5
253                  */
254                 snprintf(name, IFNAMSIZ, "vlan%i", vlan_id);
255                 break;
256         case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD:
257                 /* Put our vlan.VID in the name.
258                  * Name will look like:  eth0.5
259                  */
260                 snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id);
261                 break;
262         case VLAN_NAME_TYPE_PLUS_VID:
263                 /* Put our vlan.VID in the name.
264                  * Name will look like:  vlan0005
265                  */
266         default:
267                 snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
268         }
269
270         new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name, vlan_setup);
271
272         if (new_dev == NULL)
273                 return -ENOBUFS;
274
275         dev_net_set(new_dev, net);
276         /* need 4 bytes for extra VLAN header info,
277          * hope the underlying device can handle it.
278          */
279         new_dev->mtu = real_dev->mtu;
280
281         vlan_dev_info(new_dev)->vlan_id = vlan_id;
282         vlan_dev_info(new_dev)->real_dev = real_dev;
283         vlan_dev_info(new_dev)->dent = NULL;
284         vlan_dev_info(new_dev)->flags = VLAN_FLAG_REORDER_HDR;
285
286         new_dev->rtnl_link_ops = &vlan_link_ops;
287         err = register_vlan_dev(new_dev);
288         if (err < 0)
289                 goto out_free_newdev;
290
291         return 0;
292
293 out_free_newdev:
294         free_netdev(new_dev);
295         return err;
296 }
297
298 static void vlan_sync_address(struct net_device *dev,
299                               struct net_device *vlandev)
300 {
301         struct vlan_dev_info *vlan = vlan_dev_info(vlandev);
302
303         /* May be called without an actual change */
304         if (!compare_ether_addr(vlan->real_dev_addr, dev->dev_addr))
305                 return;
306
307         /* vlan address was different from the old address and is equal to
308          * the new address */
309         if (compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
310             !compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
311                 dev_uc_del(dev, vlandev->dev_addr);
312
313         /* vlan address was equal to the old address and is different from
314          * the new address */
315         if (!compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
316             compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
317                 dev_uc_add(dev, vlandev->dev_addr);
318
319         memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
320 }
321
322 static void vlan_transfer_features(struct net_device *dev,
323                                    struct net_device *vlandev)
324 {
325         vlandev->gso_max_size = dev->gso_max_size;
326
327         if (dev->features & NETIF_F_HW_VLAN_TX)
328                 vlandev->hard_header_len = dev->hard_header_len;
329         else
330                 vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN;
331
332 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
333         vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid;
334 #endif
335
336         netdev_update_features(vlandev);
337 }
338
339 static void __vlan_device_event(struct net_device *dev, unsigned long event)
340 {
341         switch (event) {
342         case NETDEV_CHANGENAME:
343                 vlan_proc_rem_dev(dev);
344                 if (vlan_proc_add_dev(dev) < 0)
345                         pr_warn("failed to change proc name for %s\n",
346                                 dev->name);
347                 break;
348         case NETDEV_REGISTER:
349                 if (vlan_proc_add_dev(dev) < 0)
350                         pr_warn("failed to add proc entry for %s\n", dev->name);
351                 break;
352         case NETDEV_UNREGISTER:
353                 vlan_proc_rem_dev(dev);
354                 break;
355         }
356 }
357
358 static int vlan_device_event(struct notifier_block *unused, unsigned long event,
359                              void *ptr)
360 {
361         struct net_device *dev = ptr;
362         struct vlan_group *grp;
363         int i, flgs;
364         struct net_device *vlandev;
365         struct vlan_dev_info *vlan;
366         LIST_HEAD(list);
367
368         if (is_vlan_dev(dev))
369                 __vlan_device_event(dev, event);
370
371         if ((event == NETDEV_UP) &&
372             (dev->features & NETIF_F_HW_VLAN_FILTER) &&
373             dev->netdev_ops->ndo_vlan_rx_add_vid) {
374                 pr_info("adding VLAN 0 to HW filter on device %s\n",
375                         dev->name);
376                 dev->netdev_ops->ndo_vlan_rx_add_vid(dev, 0);
377         }
378
379         grp = rtnl_dereference(dev->vlgrp);
380         if (!grp)
381                 goto out;
382
383         /* It is OK that we do not hold the group lock right now,
384          * as we run under the RTNL lock.
385          */
386
387         switch (event) {
388         case NETDEV_CHANGE:
389                 /* Propagate real device state to vlan devices */
390                 for (i = 0; i < VLAN_N_VID; i++) {
391                         vlandev = vlan_group_get_device(grp, i);
392                         if (!vlandev)
393                                 continue;
394
395                         netif_stacked_transfer_operstate(dev, vlandev);
396                 }
397                 break;
398
399         case NETDEV_CHANGEADDR:
400                 /* Adjust unicast filters on underlying device */
401                 for (i = 0; i < VLAN_N_VID; i++) {
402                         vlandev = vlan_group_get_device(grp, i);
403                         if (!vlandev)
404                                 continue;
405
406                         flgs = vlandev->flags;
407                         if (!(flgs & IFF_UP))
408                                 continue;
409
410                         vlan_sync_address(dev, vlandev);
411                 }
412                 break;
413
414         case NETDEV_CHANGEMTU:
415                 for (i = 0; i < VLAN_N_VID; i++) {
416                         vlandev = vlan_group_get_device(grp, i);
417                         if (!vlandev)
418                                 continue;
419
420                         if (vlandev->mtu <= dev->mtu)
421                                 continue;
422
423                         dev_set_mtu(vlandev, dev->mtu);
424                 }
425                 break;
426
427         case NETDEV_FEAT_CHANGE:
428                 /* Propagate device features to underlying device */
429                 for (i = 0; i < VLAN_N_VID; i++) {
430                         vlandev = vlan_group_get_device(grp, i);
431                         if (!vlandev)
432                                 continue;
433
434                         vlan_transfer_features(dev, vlandev);
435                 }
436
437                 break;
438
439         case NETDEV_DOWN:
440                 /* Put all VLANs for this dev in the down state too.  */
441                 for (i = 0; i < VLAN_N_VID; i++) {
442                         vlandev = vlan_group_get_device(grp, i);
443                         if (!vlandev)
444                                 continue;
445
446                         flgs = vlandev->flags;
447                         if (!(flgs & IFF_UP))
448                                 continue;
449
450                         vlan = vlan_dev_info(vlandev);
451                         if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
452                                 dev_change_flags(vlandev, flgs & ~IFF_UP);
453                         netif_stacked_transfer_operstate(dev, vlandev);
454                 }
455                 break;
456
457         case NETDEV_UP:
458                 /* Put all VLANs for this dev in the up state too.  */
459                 for (i = 0; i < VLAN_N_VID; i++) {
460                         vlandev = vlan_group_get_device(grp, i);
461                         if (!vlandev)
462                                 continue;
463
464                         flgs = vlandev->flags;
465                         if (flgs & IFF_UP)
466                                 continue;
467
468                         vlan = vlan_dev_info(vlandev);
469                         if (!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
470                                 dev_change_flags(vlandev, flgs | IFF_UP);
471                         netif_stacked_transfer_operstate(dev, vlandev);
472                 }
473                 break;
474
475         case NETDEV_UNREGISTER:
476                 /* twiddle thumbs on netns device moves */
477                 if (dev->reg_state != NETREG_UNREGISTERING)
478                         break;
479
480                 for (i = 0; i < VLAN_N_VID; i++) {
481                         vlandev = vlan_group_get_device(grp, i);
482                         if (!vlandev)
483                                 continue;
484
485                         /* unregistration of last vlan destroys group, abort
486                          * afterwards */
487                         if (grp->nr_vlans == 1)
488                                 i = VLAN_N_VID;
489
490                         unregister_vlan_dev(vlandev, &list);
491                 }
492                 unregister_netdevice_many(&list);
493                 break;
494
495         case NETDEV_PRE_TYPE_CHANGE:
496                 /* Forbid underlaying device to change its type. */
497                 return NOTIFY_BAD;
498
499         case NETDEV_NOTIFY_PEERS:
500         case NETDEV_BONDING_FAILOVER:
501                 /* Propagate to vlan devices */
502                 for (i = 0; i < VLAN_N_VID; i++) {
503                         vlandev = vlan_group_get_device(grp, i);
504                         if (!vlandev)
505                                 continue;
506
507                         call_netdevice_notifiers(event, vlandev);
508                 }
509                 break;
510         }
511
512 out:
513         return NOTIFY_DONE;
514 }
515
516 static struct notifier_block vlan_notifier_block __read_mostly = {
517         .notifier_call = vlan_device_event,
518 };
519
520 /*
521  *      VLAN IOCTL handler.
522  *      o execute requested action or pass command to the device driver
523  *   arg is really a struct vlan_ioctl_args __user *.
524  */
525 static int vlan_ioctl_handler(struct net *net, void __user *arg)
526 {
527         int err;
528         struct vlan_ioctl_args args;
529         struct net_device *dev = NULL;
530
531         if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args)))
532                 return -EFAULT;
533
534         /* Null terminate this sucker, just in case. */
535         args.device1[23] = 0;
536         args.u.device2[23] = 0;
537
538         rtnl_lock();
539
540         switch (args.cmd) {
541         case SET_VLAN_INGRESS_PRIORITY_CMD:
542         case SET_VLAN_EGRESS_PRIORITY_CMD:
543         case SET_VLAN_FLAG_CMD:
544         case ADD_VLAN_CMD:
545         case DEL_VLAN_CMD:
546         case GET_VLAN_REALDEV_NAME_CMD:
547         case GET_VLAN_VID_CMD:
548                 err = -ENODEV;
549                 dev = __dev_get_by_name(net, args.device1);
550                 if (!dev)
551                         goto out;
552
553                 err = -EINVAL;
554                 if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev))
555                         goto out;
556         }
557
558         switch (args.cmd) {
559         case SET_VLAN_INGRESS_PRIORITY_CMD:
560                 err = -EPERM;
561                 if (!capable(CAP_NET_ADMIN))
562                         break;
563                 vlan_dev_set_ingress_priority(dev,
564                                               args.u.skb_priority,
565                                               args.vlan_qos);
566                 err = 0;
567                 break;
568
569         case SET_VLAN_EGRESS_PRIORITY_CMD:
570                 err = -EPERM;
571                 if (!capable(CAP_NET_ADMIN))
572                         break;
573                 err = vlan_dev_set_egress_priority(dev,
574                                                    args.u.skb_priority,
575                                                    args.vlan_qos);
576                 break;
577
578         case SET_VLAN_FLAG_CMD:
579                 err = -EPERM;
580                 if (!capable(CAP_NET_ADMIN))
581                         break;
582                 err = vlan_dev_change_flags(dev,
583                                             args.vlan_qos ? args.u.flag : 0,
584                                             args.u.flag);
585                 break;
586
587         case SET_VLAN_NAME_TYPE_CMD:
588                 err = -EPERM;
589                 if (!capable(CAP_NET_ADMIN))
590                         break;
591                 if ((args.u.name_type >= 0) &&
592                     (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) {
593                         struct vlan_net *vn;
594
595                         vn = net_generic(net, vlan_net_id);
596                         vn->name_type = args.u.name_type;
597                         err = 0;
598                 } else {
599                         err = -EINVAL;
600                 }
601                 break;
602
603         case ADD_VLAN_CMD:
604                 err = -EPERM;
605                 if (!capable(CAP_NET_ADMIN))
606                         break;
607                 err = register_vlan_device(dev, args.u.VID);
608                 break;
609
610         case DEL_VLAN_CMD:
611                 err = -EPERM;
612                 if (!capable(CAP_NET_ADMIN))
613                         break;
614                 unregister_vlan_dev(dev, NULL);
615                 err = 0;
616                 break;
617
618         case GET_VLAN_REALDEV_NAME_CMD:
619                 err = 0;
620                 vlan_dev_get_realdev_name(dev, args.u.device2);
621                 if (copy_to_user(arg, &args,
622                                  sizeof(struct vlan_ioctl_args)))
623                         err = -EFAULT;
624                 break;
625
626         case GET_VLAN_VID_CMD:
627                 err = 0;
628                 args.u.VID = vlan_dev_vlan_id(dev);
629                 if (copy_to_user(arg, &args,
630                                  sizeof(struct vlan_ioctl_args)))
631                       err = -EFAULT;
632                 break;
633
634         default:
635                 err = -EOPNOTSUPP;
636                 break;
637         }
638 out:
639         rtnl_unlock();
640         return err;
641 }
642
643 static int __net_init vlan_init_net(struct net *net)
644 {
645         struct vlan_net *vn = net_generic(net, vlan_net_id);
646         int err;
647
648         vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
649
650         err = vlan_proc_init(net);
651
652         return err;
653 }
654
655 static void __net_exit vlan_exit_net(struct net *net)
656 {
657         vlan_proc_cleanup(net);
658 }
659
660 static struct pernet_operations vlan_net_ops = {
661         .init = vlan_init_net,
662         .exit = vlan_exit_net,
663         .id   = &vlan_net_id,
664         .size = sizeof(struct vlan_net),
665 };
666
667 static int __init vlan_proto_init(void)
668 {
669         int err;
670
671         pr_info("%s v%s\n", vlan_fullname, vlan_version);
672
673         err = register_pernet_subsys(&vlan_net_ops);
674         if (err < 0)
675                 goto err0;
676
677         err = register_netdevice_notifier(&vlan_notifier_block);
678         if (err < 0)
679                 goto err2;
680
681         err = vlan_gvrp_init();
682         if (err < 0)
683                 goto err3;
684
685         err = vlan_netlink_init();
686         if (err < 0)
687                 goto err4;
688
689         vlan_ioctl_set(vlan_ioctl_handler);
690         return 0;
691
692 err4:
693         vlan_gvrp_uninit();
694 err3:
695         unregister_netdevice_notifier(&vlan_notifier_block);
696 err2:
697         unregister_pernet_subsys(&vlan_net_ops);
698 err0:
699         return err;
700 }
701
702 static void __exit vlan_cleanup_module(void)
703 {
704         vlan_ioctl_set(NULL);
705         vlan_netlink_fini();
706
707         unregister_netdevice_notifier(&vlan_notifier_block);
708
709         unregister_pernet_subsys(&vlan_net_ops);
710         rcu_barrier(); /* Wait for completion of call_rcu()'s */
711
712         vlan_gvrp_uninit();
713 }
714
715 module_init(vlan_proto_init);
716 module_exit(vlan_cleanup_module);
717
718 MODULE_LICENSE("GPL");
719 MODULE_VERSION(DRV_VERSION);