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[NET]: Conversions from kmalloc+memset to k(z|c)alloc.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / 8021q / vlan.c
CommitLineData
1da177e4
LT		 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: vlan@scry.wanfear.com
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#include <asm/uaccess.h> /* for copy_from_user */
4fc268d2 22#include <linux/capability.h>
1da177e4
LT		 23#include <linux/module.h>
24#include <linux/netdevice.h>
25#include <linux/skbuff.h>
26#include <net/datalink.h>
27#include <linux/mm.h>
28#include <linux/in.h>
29#include <linux/init.h>
30#include <net/p8022.h>
31#include <net/arp.h>
32#include <linux/rtnetlink.h>
33#include <linux/notifier.h>
34
35#include <linux/if_vlan.h>
36#include "vlan.h"
37#include "vlanproc.h"
38
39#define DRV_VERSION "1.8"
40
41/* Global VLAN variables */
42
43/* Our listing of VLAN group(s) */
44static struct hlist_head vlan_group_hash[VLAN_GRP_HASH_SIZE];
45#define vlan_grp_hashfn(IDX) ((((IDX) >> VLAN_GRP_HASH_SHIFT) ^ (IDX)) & VLAN_GRP_HASH_MASK)
46
47static char vlan_fullname[] = "802.1Q VLAN Support";
48static char vlan_version[] = DRV_VERSION;
49static char vlan_copyright[] = "Ben Greear <greearb@candelatech.com>";
50static char vlan_buggyright[] = "David S. Miller <davem@redhat.com>";
51
52static int vlan_device_event(struct notifier_block *, unsigned long, void *);
53static int vlan_ioctl_handler(void __user *);
54static int unregister_vlan_dev(struct net_device *, unsigned short );
55
56static struct notifier_block vlan_notifier_block = {
57 .notifier_call = vlan_device_event,
58};
59
60/* These may be changed at run-time through IOCTLs */
61
62/* Determines interface naming scheme. */
63unsigned short vlan_name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
64
65static struct packet_type vlan_packet_type = {
66 .type = __constant_htons(ETH_P_8021Q),
67 .func = vlan_skb_recv, /* VLAN receive method */
68};
69
70/* Bits of netdev state that are propagated from real device to virtual */
71#define VLAN_LINK_STATE_MASK \
ddd7bf9f 72 ((1<<__LINK_STATE_PRESENT)|(1<<__LINK_STATE_NOCARRIER)|(1<<__LINK_STATE_DORMANT))
1da177e4
LT		 73
74/* End of global variables definitions. */
75
76/*
77 * Function vlan_proto_init (pro)
78 *
79 * Initialize VLAN protocol layer,
80 *
81 */
82static int __init vlan_proto_init(void)
83{
84 int err;
85
86 printk(VLAN_INF "%s v%s %s\n",
87 vlan_fullname, vlan_version, vlan_copyright);
88 printk(VLAN_INF "All bugs added by %s\n",
89 vlan_buggyright);
90
91 /* proc file system initialization */
92 err = vlan_proc_init();
93 if (err < 0) {
94 printk(KERN_ERR
95 "%s %s: can't create entry in proc filesystem!\n",
96 __FUNCTION__, VLAN_NAME);
97 return err;
98 }
99
100 dev_add_pack(&vlan_packet_type);
101
102 /* Register us to receive netdevice events */
103 err = register_netdevice_notifier(&vlan_notifier_block);
104 if (err < 0) {
105 dev_remove_pack(&vlan_packet_type);
106 vlan_proc_cleanup();
107 return err;
108 }
109
110 vlan_ioctl_set(vlan_ioctl_handler);
111
112 return 0;
113}
114
115/* Cleanup all vlan devices
116 * Note: devices that have been registered that but not
117 * brought up will exist but have no module ref count.
118 */
119static void __exit vlan_cleanup_devices(void)
120{
121 struct net_device *dev, *nxt;
122
123 rtnl_lock();
124 for (dev = dev_base; dev; dev = nxt) {
125 nxt = dev->next;
126 if (dev->priv_flags & IFF_802_1Q_VLAN) {
127 unregister_vlan_dev(VLAN_DEV_INFO(dev)->real_dev,
128 VLAN_DEV_INFO(dev)->vlan_id);
129
130 unregister_netdevice(dev);
131 }
132 }
133 rtnl_unlock();
134}
135
136/*
137 * Module 'remove' entry point.
138 * o delete /proc/net/router directory and static entries.
139 */
140static void __exit vlan_cleanup_module(void)
141{
142 int i;
143
144 vlan_ioctl_set(NULL);
145
146 /* Un-register us from receiving netdevice events */
147 unregister_netdevice_notifier(&vlan_notifier_block);
148
149 dev_remove_pack(&vlan_packet_type);
150 vlan_cleanup_devices();
151
152 /* This table must be empty if there are no module
153 * references left.
154 */
155 for (i = 0; i < VLAN_GRP_HASH_SIZE; i++) {
156 BUG_ON(!hlist_empty(&vlan_group_hash[i]));
157 }
158 vlan_proc_cleanup();
159
160 synchronize_net();
161}
162
163module_init(vlan_proto_init);
164module_exit(vlan_cleanup_module);
165
166/* Must be invoked with RCU read lock (no preempt) */
167static struct vlan_group *__vlan_find_group(int real_dev_ifindex)
168{
169 struct vlan_group *grp;
170 struct hlist_node *n;
171 int hash = vlan_grp_hashfn(real_dev_ifindex);
172
173 hlist_for_each_entry_rcu(grp, n, &vlan_group_hash[hash], hlist) {
174 if (grp->real_dev_ifindex == real_dev_ifindex)
175 return grp;
176 }
177
178 return NULL;
179}
180
181/* Find the protocol handler. Assumes VID < VLAN_VID_MASK.
182 *
183 * Must be invoked with RCU read lock (no preempt)
184 */
185struct net_device *__find_vlan_dev(struct net_device *real_dev,
186 unsigned short VID)
187{
188 struct vlan_group *grp = __vlan_find_group(real_dev->ifindex);
189
190 if (grp)
191 return grp->vlan_devices[VID];
192
193 return NULL;
194}
195
196static void vlan_rcu_free(struct rcu_head *rcu)
197{
198 kfree(container_of(rcu, struct vlan_group, rcu));
199}
200
201
202/* This returns 0 if everything went fine.
203 * It will return 1 if the group was killed as a result.
204 * A negative return indicates failure.
205 *
206 * The RTNL lock must be held.
207 */
208static int unregister_vlan_dev(struct net_device *real_dev,
209 unsigned short vlan_id)
210{
211 struct net_device *dev = NULL;
212 int real_dev_ifindex = real_dev->ifindex;
213 struct vlan_group *grp;
214 int i, ret;
215
216#ifdef VLAN_DEBUG
217 printk(VLAN_DBG "%s: VID: %i\n", __FUNCTION__, vlan_id);
218#endif
219
220 /* sanity check */
221 if (vlan_id >= VLAN_VID_MASK)
222 return -EINVAL;
223
224 ASSERT_RTNL();
225 grp = __vlan_find_group(real_dev_ifindex);
226
227 ret = 0;
228
229 if (grp) {
230 dev = grp->vlan_devices[vlan_id];
231 if (dev) {
232 /* Remove proc entry */
233 vlan_proc_rem_dev(dev);
234
235 /* Take it out of our own structures, but be sure to
236 * interlock with HW accelerating devices or SW vlan
237 * input packet processing.
238 */
239 if (real_dev->features &
240 (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER)) {
241 real_dev->vlan_rx_kill_vid(real_dev, vlan_id);
242 }
243
244 grp->vlan_devices[vlan_id] = NULL;
245 synchronize_net();
246
247
248 /* Caller unregisters (and if necessary, puts)
249 * VLAN device, but we get rid of the reference to
250 * real_dev here.
251 */
252 dev_put(real_dev);
253
254 /* If the group is now empty, kill off the
255 * group.
256 */
257 for (i = 0; i < VLAN_VID_MASK; i++)
258 if (grp->vlan_devices[i])
259 break;
260
261 if (i == VLAN_VID_MASK) {
262 if (real_dev->features & NETIF_F_HW_VLAN_RX)
263 real_dev->vlan_rx_register(real_dev, NULL);
264
265 hlist_del_rcu(&grp->hlist);
266
267 /* Free the group, after all cpu's are done. */
268 call_rcu(&grp->rcu, vlan_rcu_free);
269
270 grp = NULL;
271 ret = 1;
272 }
273 }
274 }
275
276 return ret;
277}
278
279static int unregister_vlan_device(const char *vlan_IF_name)
280{
281 struct net_device *dev = NULL;
282 int ret;
283
284
285 dev = dev_get_by_name(vlan_IF_name);
286 ret = -EINVAL;
287 if (dev) {
288 if (dev->priv_flags & IFF_802_1Q_VLAN) {
289 rtnl_lock();
290
291 ret = unregister_vlan_dev(VLAN_DEV_INFO(dev)->real_dev,
292 VLAN_DEV_INFO(dev)->vlan_id);
293
294 dev_put(dev);
295 unregister_netdevice(dev);
296
297 rtnl_unlock();
298
299 if (ret == 1)
300 ret = 0;
301 } else {
302 printk(VLAN_ERR
303 "%s: ERROR: Tried to remove a non-vlan device "
304 "with VLAN code, name: %s priv_flags: %hX\n",
305 __FUNCTION__, dev->name, dev->priv_flags);
306 dev_put(dev);
307 ret = -EPERM;
308 }
309 } else {
310#ifdef VLAN_DEBUG
311 printk(VLAN_DBG "%s: WARNING: Could not find dev.\n", __FUNCTION__);
312#endif
313 ret = -EINVAL;
314 }
315
316 return ret;
317}
318
319static void vlan_setup(struct net_device *new_dev)
320{
321 SET_MODULE_OWNER(new_dev);
322
323 /* new_dev->ifindex = 0; it will be set when added to
324 * the global list.
325 * iflink is set as well.
326 */
327 new_dev->get_stats = vlan_dev_get_stats;
328
329 /* Make this thing known as a VLAN device */
330 new_dev->priv_flags |= IFF_802_1Q_VLAN;
331
332 /* Set us up to have no queue, as the underlying Hardware device
333 * can do all the queueing we could want.
334 */
335 new_dev->tx_queue_len = 0;
336
337 /* set up method calls */
338 new_dev->change_mtu = vlan_dev_change_mtu;
339 new_dev->open = vlan_dev_open;
340 new_dev->stop = vlan_dev_stop;
341 new_dev->set_mac_address = vlan_dev_set_mac_address;
342 new_dev->set_multicast_list = vlan_dev_set_multicast_list;
343 new_dev->destructor = free_netdev;
344 new_dev->do_ioctl = vlan_dev_ioctl;
345}
346
ddd7bf9f
SR		 347static void vlan_transfer_operstate(const struct net_device *dev, struct net_device *vlandev)
348{
349 /* Have to respect userspace enforced dormant state
350 * of real device, also must allow supplicant running
351 * on VLAN device
352 */
353 if (dev->operstate == IF_OPER_DORMANT)
354 netif_dormant_on(vlandev);
355 else
356 netif_dormant_off(vlandev);
357
358 if (netif_carrier_ok(dev)) {
359 if (!netif_carrier_ok(vlandev))
360 netif_carrier_on(vlandev);
361 } else {
362 if (netif_carrier_ok(vlandev))
363 netif_carrier_off(vlandev);
364 }
365}
366
5dd8d1e9
AV		 367/*
368 * vlan network devices have devices nesting below it, and are a special
369 * "super class" of normal network devices; split their locks off into a
370 * separate class since they always nest.
371 */
372static struct lock_class_key vlan_netdev_xmit_lock_key;
373
374
1da177e4
LT		 375/* Attach a VLAN device to a mac address (ie Ethernet Card).
376 * Returns the device that was created, or NULL if there was
377 * an error of some kind.
378 */
379static struct net_device *register_vlan_device(const char *eth_IF_name,
380 unsigned short VLAN_ID)
381{
382 struct vlan_group *grp;
383 struct net_device *new_dev;
384 struct net_device *real_dev; /* the ethernet device */
385 char name[IFNAMSIZ];
386
387#ifdef VLAN_DEBUG
388 printk(VLAN_DBG "%s: if_name -:%s:- vid: %i\n",
389 __FUNCTION__, eth_IF_name, VLAN_ID);
390#endif
391
392 if (VLAN_ID >= VLAN_VID_MASK)
393 goto out_ret_null;
394
395 /* find the device relating to eth_IF_name. */
396 real_dev = dev_get_by_name(eth_IF_name);
397 if (!real_dev)
398 goto out_ret_null;
399
400 if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
401 printk(VLAN_DBG "%s: VLANs not supported on %s.\n",
402 __FUNCTION__, real_dev->name);
403 goto out_put_dev;
404 }
405
406 if ((real_dev->features & NETIF_F_HW_VLAN_RX) &&
407 (real_dev->vlan_rx_register == NULL ||
408 real_dev->vlan_rx_kill_vid == NULL)) {
409 printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
410 __FUNCTION__, real_dev->name);
411 goto out_put_dev;
412 }
413
414 if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
415 (real_dev->vlan_rx_add_vid == NULL ||
416 real_dev->vlan_rx_kill_vid == NULL)) {
417 printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
418 __FUNCTION__, real_dev->name);
419 goto out_put_dev;
420 }
421
422 /* From this point on, all the data structures must remain
423 * consistent.
424 */
425 rtnl_lock();
426
427 /* The real device must be up and operating in order to
428 * assosciate a VLAN device with it.
429 */
430 if (!(real_dev->flags & IFF_UP))
431 goto out_unlock;
432
433 if (__find_vlan_dev(real_dev, VLAN_ID) != NULL) {
434 /* was already registered. */
435 printk(VLAN_DBG "%s: ALREADY had VLAN registered\n", __FUNCTION__);
436 goto out_unlock;
437 }
438
439 /* Gotta set up the fields for the device. */
440#ifdef VLAN_DEBUG
441 printk(VLAN_DBG "About to allocate name, vlan_name_type: %i\n",
442 vlan_name_type);
443#endif
444 switch (vlan_name_type) {
445 case VLAN_NAME_TYPE_RAW_PLUS_VID:
446 /* name will look like: eth1.0005 */
447 snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, VLAN_ID);
448 break;
449 case VLAN_NAME_TYPE_PLUS_VID_NO_PAD:
450 /* Put our vlan.VID in the name.
451 * Name will look like: vlan5
452 */
453 snprintf(name, IFNAMSIZ, "vlan%i", VLAN_ID);
454 break;
455 case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD:
456 /* Put our vlan.VID in the name.
457 * Name will look like: eth0.5
458 */
459 snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, VLAN_ID);
460 break;
461 case VLAN_NAME_TYPE_PLUS_VID:
462 /* Put our vlan.VID in the name.
463 * Name will look like: vlan0005
464 */
465 default:
466 snprintf(name, IFNAMSIZ, "vlan%.4i", VLAN_ID);
467 };
468
469 new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name,
470 vlan_setup);
5dd8d1e9 471
1da177e4
LT		 472 if (new_dev == NULL)
473 goto out_unlock;
474
475#ifdef VLAN_DEBUG
476 printk(VLAN_DBG "Allocated new name -:%s:-\n", new_dev->name);
477#endif
478 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
479 new_dev->flags = real_dev->flags;
480 new_dev->flags &= ~IFF_UP;
481
ddd7bf9f 482 new_dev->state = real_dev->state & ~(1<<__LINK_STATE_START);
1da177e4
LT		 483
484 /* need 4 bytes for extra VLAN header info,
485 * hope the underlying device can handle it.
486 */
487 new_dev->mtu = real_dev->mtu;
488
489 /* TODO: maybe just assign it to be ETHERNET? */
490 new_dev->type = real_dev->type;
491
492 new_dev->hard_header_len = real_dev->hard_header_len;
493 if (!(real_dev->features & NETIF_F_HW_VLAN_TX)) {
494 /* Regular ethernet + 4 bytes (18 total). */
495 new_dev->hard_header_len += VLAN_HLEN;
496 }
497
498 VLAN_MEM_DBG("new_dev->priv malloc, addr: %p size: %i\n",
499 new_dev->priv,
500 sizeof(struct vlan_dev_info));
501
502 memcpy(new_dev->broadcast, real_dev->broadcast, real_dev->addr_len);
503 memcpy(new_dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
504 new_dev->addr_len = real_dev->addr_len;
505
506 if (real_dev->features & NETIF_F_HW_VLAN_TX) {
507 new_dev->hard_header = real_dev->hard_header;
508 new_dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
509 new_dev->rebuild_header = real_dev->rebuild_header;
510 } else {
511 new_dev->hard_header = vlan_dev_hard_header;
512 new_dev->hard_start_xmit = vlan_dev_hard_start_xmit;
513 new_dev->rebuild_header = vlan_dev_rebuild_header;
514 }
515 new_dev->hard_header_parse = real_dev->hard_header_parse;
516
517 VLAN_DEV_INFO(new_dev)->vlan_id = VLAN_ID; /* 1 through VLAN_VID_MASK */
518 VLAN_DEV_INFO(new_dev)->real_dev = real_dev;
519 VLAN_DEV_INFO(new_dev)->dent = NULL;
520 VLAN_DEV_INFO(new_dev)->flags = 1;
521
522#ifdef VLAN_DEBUG
523 printk(VLAN_DBG "About to go find the group for idx: %i\n",
524 real_dev->ifindex);
525#endif
526
527 if (register_netdevice(new_dev))
528 goto out_free_newdev;
529
5dd8d1e9
AV		 530 lockdep_set_class(&new_dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
531
ddd7bf9f
SR		 532 new_dev->iflink = real_dev->ifindex;
533 vlan_transfer_operstate(real_dev, new_dev);
534 linkwatch_fire_event(new_dev); /* _MUST_ call rfc2863_policy() */
535
1da177e4
LT		 536 /* So, got the sucker initialized, now lets place
537 * it into our local structure.
538 */
539 grp = __vlan_find_group(real_dev->ifindex);
540
541 /* Note, we are running under the RTNL semaphore
542 * so it cannot "appear" on us.
543 */
544 if (!grp) { /* need to add a new group */
0da974f4 545 grp = kzalloc(sizeof(struct vlan_group), GFP_KERNEL);
1da177e4
LT		 546 if (!grp)
547 goto out_free_unregister;
548
549 /* printk(KERN_ALERT "VLAN REGISTER: Allocated new group.\n"); */
1da177e4
LT		 550 grp->real_dev_ifindex = real_dev->ifindex;
551
552 hlist_add_head_rcu(&grp->hlist,
553 &vlan_group_hash[vlan_grp_hashfn(real_dev->ifindex)]);
554
555 if (real_dev->features & NETIF_F_HW_VLAN_RX)
556 real_dev->vlan_rx_register(real_dev, grp);
557 }
558
559 grp->vlan_devices[VLAN_ID] = new_dev;
560
561 if (vlan_proc_add_dev(new_dev)<0)/* create it's proc entry */
562 printk(KERN_WARNING "VLAN: failed to add proc entry for %s\n",
563 new_dev->name);
564
565 if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
566 real_dev->vlan_rx_add_vid(real_dev, VLAN_ID);
567
568 rtnl_unlock();
569
570
571#ifdef VLAN_DEBUG
572 printk(VLAN_DBG "Allocated new device successfully, returning.\n");
573#endif
574 return new_dev;
575
576out_free_unregister:
577 unregister_netdev(new_dev);
578 goto out_unlock;
579
580out_free_newdev:
581 free_netdev(new_dev);
582
583out_unlock:
584 rtnl_unlock();
585
586out_put_dev:
587 dev_put(real_dev);
588
589out_ret_null:
590 return NULL;
591}
592
593static int vlan_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
594{
595 struct net_device *dev = ptr;
596 struct vlan_group *grp = __vlan_find_group(dev->ifindex);
597 int i, flgs;
598 struct net_device *vlandev;
599
600 if (!grp)
601 goto out;
602
603 /* It is OK that we do not hold the group lock right now,
604 * as we run under the RTNL lock.
605 */
606
607 switch (event) {
608 case NETDEV_CHANGE:
609 /* Propagate real device state to vlan devices */
1da177e4
LT		 610 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
611 vlandev = grp->vlan_devices[i];
612 if (!vlandev)
613 continue;
614
ddd7bf9f 615 vlan_transfer_operstate(dev, vlandev);
1da177e4
LT		 616 }
617 break;
618
619 case NETDEV_DOWN:
620 /* Put all VLANs for this dev in the down state too. */
621 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
622 vlandev = grp->vlan_devices[i];
623 if (!vlandev)
624 continue;
625
626 flgs = vlandev->flags;
627 if (!(flgs & IFF_UP))
628 continue;
629
630 dev_change_flags(vlandev, flgs & ~IFF_UP);
631 }
632 break;
633
634 case NETDEV_UP:
635 /* Put all VLANs for this dev in the up state too. */
636 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
637 vlandev = grp->vlan_devices[i];
638 if (!vlandev)
639 continue;
640
641 flgs = vlandev->flags;
642 if (flgs & IFF_UP)
643 continue;
644
645 dev_change_flags(vlandev, flgs | IFF_UP);
646 }
647 break;
648
649 case NETDEV_UNREGISTER:
650 /* Delete all VLANs for this dev. */
651 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
652 int ret;
653
654 vlandev = grp->vlan_devices[i];
655 if (!vlandev)
656 continue;
657
658 ret = unregister_vlan_dev(dev,
659 VLAN_DEV_INFO(vlandev)->vlan_id);
660
661 unregister_netdevice(vlandev);
662
663 /* Group was destroyed? */
664 if (ret == 1)
665 break;
666 }
667 break;
668 };
669
670out:
671 return NOTIFY_DONE;
672}
673
674/*
675 * VLAN IOCTL handler.
676 * o execute requested action or pass command to the device driver
677 * arg is really a struct vlan_ioctl_args __user *.
678 */
679static int vlan_ioctl_handler(void __user *arg)
680{
681 int err = 0;
682 unsigned short vid = 0;
683 struct vlan_ioctl_args args;
684
685 if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args)))
686 return -EFAULT;
687
688 /* Null terminate this sucker, just in case. */
689 args.device1[23] = 0;
690 args.u.device2[23] = 0;
691
692#ifdef VLAN_DEBUG
693 printk(VLAN_DBG "%s: args.cmd: %x\n", __FUNCTION__, args.cmd);
694#endif
695
696 switch (args.cmd) {
697 case SET_VLAN_INGRESS_PRIORITY_CMD:
698 if (!capable(CAP_NET_ADMIN))
699 return -EPERM;
700 err = vlan_dev_set_ingress_priority(args.device1,
701 args.u.skb_priority,
702 args.vlan_qos);
703 break;
704
705 case SET_VLAN_EGRESS_PRIORITY_CMD:
706 if (!capable(CAP_NET_ADMIN))
707 return -EPERM;
708 err = vlan_dev_set_egress_priority(args.device1,
709 args.u.skb_priority,
710 args.vlan_qos);
711 break;
712
713 case SET_VLAN_FLAG_CMD:
714 if (!capable(CAP_NET_ADMIN))
715 return -EPERM;
716 err = vlan_dev_set_vlan_flag(args.device1,
717 args.u.flag,
718 args.vlan_qos);
719 break;
720
721 case SET_VLAN_NAME_TYPE_CMD:
722 if (!capable(CAP_NET_ADMIN))
723 return -EPERM;
724 if ((args.u.name_type >= 0) &&
725 (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) {
726 vlan_name_type = args.u.name_type;
727 err = 0;
728 } else {
729 err = -EINVAL;
730 }
731 break;
732
733 case ADD_VLAN_CMD:
734 if (!capable(CAP_NET_ADMIN))
735 return -EPERM;
736 /* we have been given the name of the Ethernet Device we want to
737 * talk to: args.dev1 We also have the
738 * VLAN ID: args.u.VID
739 */
740 if (register_vlan_device(args.device1, args.u.VID)) {
741 err = 0;
742 } else {
743 err = -EINVAL;
744 }
745 break;
746
747 case DEL_VLAN_CMD:
748 if (!capable(CAP_NET_ADMIN))
749 return -EPERM;
750 /* Here, the args.dev1 is the actual VLAN we want
751 * to get rid of.
752 */
753 err = unregister_vlan_device(args.device1);
754 break;
755
756 case GET_VLAN_INGRESS_PRIORITY_CMD:
757 /* TODO: Implement
758 err = vlan_dev_get_ingress_priority(args);
759 if (copy_to_user((void*)arg, &args,
760 sizeof(struct vlan_ioctl_args))) {
761 err = -EFAULT;
762 }
763 */
764 err = -EINVAL;
765 break;
766 case GET_VLAN_EGRESS_PRIORITY_CMD:
767 /* TODO: Implement
768 err = vlan_dev_get_egress_priority(args.device1, &(args.args);
769 if (copy_to_user((void*)arg, &args,
770 sizeof(struct vlan_ioctl_args))) {
771 err = -EFAULT;
772 }
773 */
774 err = -EINVAL;
775 break;
776 case GET_VLAN_REALDEV_NAME_CMD:
777 err = vlan_dev_get_realdev_name(args.device1, args.u.device2);
7eb1b3d3
MK		 778 if (err)
779 goto out;
1da177e4
LT		 780 if (copy_to_user(arg, &args,
781 sizeof(struct vlan_ioctl_args))) {
782 err = -EFAULT;
783 }
784 break;
785
786 case GET_VLAN_VID_CMD:
787 err = vlan_dev_get_vid(args.device1, &vid);
7eb1b3d3
MK		 788 if (err)
789 goto out;
1da177e4
LT		 790 args.u.VID = vid;
791 if (copy_to_user(arg, &args,
792 sizeof(struct vlan_ioctl_args))) {
793 err = -EFAULT;
794 }
795 break;
796
797 default:
798 /* pass on to underlying device instead?? */
799 printk(VLAN_DBG "%s: Unknown VLAN CMD: %x \n",
800 __FUNCTION__, args.cmd);
801 return -EINVAL;
802 };
7eb1b3d3 803out:
1da177e4
LT		 804 return err;
805}
806
807MODULE_LICENSE("GPL");
808MODULE_VERSION(DRV_VERSION);
kernel source for telekom puls (alcatel/mediatek)