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20#include <linux/netdevice.h>
21#include <linux/module.h>
22#include <linux/if_arp.h>
23#include <linux/ieee802154.h>
24
25#include <net/nl802154.h>
26#include <net/mac802154.h>
27#include <net/ieee802154_netdev.h>
28#include <net/cfg802154.h>
29
30#include "ieee802154_i.h"
31#include "driver-ops.h"
32
33int mac802154_wpan_update_llsec(struct net_device *dev)
34{
35 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
36 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
37 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
38 int rc = 0;
39
40 if (ops->llsec) {
41 struct ieee802154_llsec_params params;
42 int changed = 0;
43
44 params.pan_id = wpan_dev->pan_id;
45 changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
46
47 params.hwaddr = wpan_dev->extended_addr;
48 changed |= IEEE802154_LLSEC_PARAM_HWADDR;
49
50 rc = ops->llsec->set_params(dev, ¶ms, changed);
51 }
52
53 return rc;
54}
55
56static int
57mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
58{
59 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
60 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
61 struct sockaddr_ieee802154 *sa =
62 (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
63 int err = -ENOIOCTLCMD;
64
65 if (cmd != SIOCGIFADDR && cmd != SIOCSIFADDR)
66 return err;
67
68 rtnl_lock();
69
70 switch (cmd) {
71 case SIOCGIFADDR:
72 {
73 u16 pan_id, short_addr;
74
75 pan_id = le16_to_cpu(wpan_dev->pan_id);
76 short_addr = le16_to_cpu(wpan_dev->short_addr);
77 if (pan_id == IEEE802154_PANID_BROADCAST ||
78 short_addr == IEEE802154_ADDR_BROADCAST) {
79 err = -EADDRNOTAVAIL;
80 break;
81 }
82
83 sa->family = AF_IEEE802154;
84 sa->addr.addr_type = IEEE802154_ADDR_SHORT;
85 sa->addr.pan_id = pan_id;
86 sa->addr.short_addr = short_addr;
87
88 err = 0;
89 break;
90 }
91 case SIOCSIFADDR:
92 if (netif_running(dev)) {
93 rtnl_unlock();
94 return -EBUSY;
95 }
96
97 dev_warn(&dev->dev,
98 "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
99 if (sa->family != AF_IEEE802154 ||
100 sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
101 sa->addr.pan_id == IEEE802154_PANID_BROADCAST ||
102 sa->addr.short_addr == IEEE802154_ADDR_BROADCAST ||
103 sa->addr.short_addr == IEEE802154_ADDR_UNDEF) {
104 err = -EINVAL;
105 break;
106 }
107
108 wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id);
109 wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr);
110
111 err = mac802154_wpan_update_llsec(dev);
112 break;
113 }
114
115 rtnl_unlock();
116 return err;
117}
118
119static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
120{
121 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
122 struct sockaddr *addr = p;
123 __le64 extended_addr;
124
125 if (netif_running(dev))
126 return -EBUSY;
127
128
129
130
131 if (sdata->wpan_dev.lowpan_dev) {
132 if (netif_running(sdata->wpan_dev.lowpan_dev))
133 return -EBUSY;
134 }
135
136 ieee802154_be64_to_le64(&extended_addr, addr->sa_data);
137 if (!ieee802154_is_valid_extended_unicast_addr(extended_addr))
138 return -EINVAL;
139
140 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
141 sdata->wpan_dev.extended_addr = extended_addr;
142
143
144
145
146 if (sdata->wpan_dev.lowpan_dev)
147 memcpy(sdata->wpan_dev.lowpan_dev->dev_addr, dev->dev_addr,
148 dev->addr_len);
149
150 return mac802154_wpan_update_llsec(dev);
151}
152
153static int ieee802154_setup_hw(struct ieee802154_sub_if_data *sdata)
154{
155 struct ieee802154_local *local = sdata->local;
156 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
157 int ret;
158
159 if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
160 ret = drv_set_promiscuous_mode(local,
161 wpan_dev->promiscuous_mode);
162 if (ret < 0)
163 return ret;
164 }
165
166 if (local->hw.flags & IEEE802154_HW_AFILT) {
167 ret = drv_set_pan_id(local, wpan_dev->pan_id);
168 if (ret < 0)
169 return ret;
170
171 ret = drv_set_extended_addr(local, wpan_dev->extended_addr);
172 if (ret < 0)
173 return ret;
174
175 ret = drv_set_short_addr(local, wpan_dev->short_addr);
176 if (ret < 0)
177 return ret;
178 }
179
180 if (local->hw.flags & IEEE802154_HW_LBT) {
181 ret = drv_set_lbt_mode(local, wpan_dev->lbt);
182 if (ret < 0)
183 return ret;
184 }
185
186 if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
187 ret = drv_set_csma_params(local, wpan_dev->min_be,
188 wpan_dev->max_be,
189 wpan_dev->csma_retries);
190 if (ret < 0)
191 return ret;
192 }
193
194 if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
195 ret = drv_set_max_frame_retries(local, wpan_dev->frame_retries);
196 if (ret < 0)
197 return ret;
198 }
199
200 return 0;
201}
202
203static int mac802154_slave_open(struct net_device *dev)
204{
205 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
206 struct ieee802154_local *local = sdata->local;
207 int res;
208
209 ASSERT_RTNL();
210
211 set_bit(SDATA_STATE_RUNNING, &sdata->state);
212
213 if (!local->open_count) {
214 res = ieee802154_setup_hw(sdata);
215 if (res)
216 goto err;
217
218 res = drv_start(local);
219 if (res)
220 goto err;
221 }
222
223 local->open_count++;
224 netif_start_queue(dev);
225 return 0;
226err:
227
228 clear_bit(SDATA_STATE_RUNNING, &sdata->state);
229
230 return res;
231}
232
233static int
234ieee802154_check_mac_settings(struct ieee802154_local *local,
235 struct wpan_dev *wpan_dev,
236 struct wpan_dev *nwpan_dev)
237{
238 ASSERT_RTNL();
239
240 if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
241 if (wpan_dev->promiscuous_mode != nwpan_dev->promiscuous_mode)
242 return -EBUSY;
243 }
244
245 if (local->hw.flags & IEEE802154_HW_AFILT) {
246 if (wpan_dev->pan_id != nwpan_dev->pan_id ||
247 wpan_dev->short_addr != nwpan_dev->short_addr ||
248 wpan_dev->extended_addr != nwpan_dev->extended_addr)
249 return -EBUSY;
250 }
251
252 if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
253 if (wpan_dev->min_be != nwpan_dev->min_be ||
254 wpan_dev->max_be != nwpan_dev->max_be ||
255 wpan_dev->csma_retries != nwpan_dev->csma_retries)
256 return -EBUSY;
257 }
258
259 if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
260 if (wpan_dev->frame_retries != nwpan_dev->frame_retries)
261 return -EBUSY;
262 }
263
264 if (local->hw.flags & IEEE802154_HW_LBT) {
265 if (wpan_dev->lbt != nwpan_dev->lbt)
266 return -EBUSY;
267 }
268
269 return 0;
270}
271
272static int
273ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata,
274 enum nl802154_iftype iftype)
275{
276 struct ieee802154_local *local = sdata->local;
277 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
278 struct ieee802154_sub_if_data *nsdata;
279
280
281 list_for_each_entry(nsdata, &local->interfaces, list) {
282 if (nsdata != sdata && ieee802154_sdata_running(nsdata)) {
283 int ret;
284
285
286
287
288
289
290 if (wpan_dev->iftype == NL802154_IFTYPE_NODE &&
291 nsdata->wpan_dev.iftype == NL802154_IFTYPE_NODE)
292 return -EBUSY;
293
294
295
296
297 ret = ieee802154_check_mac_settings(local, wpan_dev,
298 &nsdata->wpan_dev);
299 if (ret < 0)
300 return ret;
301 }
302 }
303
304 return 0;
305}
306
307static int mac802154_wpan_open(struct net_device *dev)
308{
309 int rc;
310 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
311 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
312
313 rc = ieee802154_check_concurrent_iface(sdata, wpan_dev->iftype);
314 if (rc < 0)
315 return rc;
316
317 return mac802154_slave_open(dev);
318}
319
320static int mac802154_slave_close(struct net_device *dev)
321{
322 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
323 struct ieee802154_local *local = sdata->local;
324
325 ASSERT_RTNL();
326
327 netif_stop_queue(dev);
328 local->open_count--;
329
330 clear_bit(SDATA_STATE_RUNNING, &sdata->state);
331
332 if (!local->open_count)
333 ieee802154_stop_device(local);
334
335 return 0;
336}
337
338static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata,
339 struct ieee802154_hdr *hdr,
340 const struct ieee802154_mac_cb *cb)
341{
342 struct ieee802154_llsec_params params;
343 u8 level;
344
345 mac802154_llsec_get_params(&sdata->sec, ¶ms);
346
347 if (!params.enabled && cb->secen_override && cb->secen)
348 return -EINVAL;
349 if (!params.enabled ||
350 (cb->secen_override && !cb->secen) ||
351 !params.out_level)
352 return 0;
353 if (cb->seclevel_override && !cb->seclevel)
354 return -EINVAL;
355
356 level = cb->seclevel_override ? cb->seclevel : params.out_level;
357
358 hdr->fc.security_enabled = 1;
359 hdr->sec.level = level;
360 hdr->sec.key_id_mode = params.out_key.mode;
361 if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
362 hdr->sec.short_src = params.out_key.short_source;
363 else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
364 hdr->sec.extended_src = params.out_key.extended_source;
365 hdr->sec.key_id = params.out_key.id;
366
367 return 0;
368}
369
370static int ieee802154_header_create(struct sk_buff *skb,
371 struct net_device *dev,
372 const struct ieee802154_addr *daddr,
373 const struct ieee802154_addr *saddr,
374 unsigned len)
375{
376 struct ieee802154_hdr hdr;
377 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
378 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
379 struct ieee802154_mac_cb *cb = mac_cb(skb);
380 int hlen;
381
382 if (!daddr)
383 return -EINVAL;
384
385 memset(&hdr.fc, 0, sizeof(hdr.fc));
386 hdr.fc.type = cb->type;
387 hdr.fc.security_enabled = cb->secen;
388 hdr.fc.ack_request = cb->ackreq;
389 hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
390
391 if (mac802154_set_header_security(sdata, &hdr, cb) < 0)
392 return -EINVAL;
393
394 if (!saddr) {
395 if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
396 wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
397 wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
398 hdr.source.mode = IEEE802154_ADDR_LONG;
399 hdr.source.extended_addr = wpan_dev->extended_addr;
400 } else {
401 hdr.source.mode = IEEE802154_ADDR_SHORT;
402 hdr.source.short_addr = wpan_dev->short_addr;
403 }
404
405 hdr.source.pan_id = wpan_dev->pan_id;
406 } else {
407 hdr.source = *(const struct ieee802154_addr *)saddr;
408 }
409
410 hdr.dest = *(const struct ieee802154_addr *)daddr;
411
412 hlen = ieee802154_hdr_push(skb, &hdr);
413 if (hlen < 0)
414 return -EINVAL;
415
416 skb_reset_mac_header(skb);
417 skb->mac_len = hlen;
418
419 if (len > ieee802154_max_payload(&hdr))
420 return -EMSGSIZE;
421
422 return hlen;
423}
424
425static const struct wpan_dev_header_ops ieee802154_header_ops = {
426 .create = ieee802154_header_create,
427};
428
429
430
431
432
433
434
435static int mac802154_header_create(struct sk_buff *skb,
436 struct net_device *dev,
437 unsigned short type,
438 const void *daddr,
439 const void *saddr,
440 unsigned len)
441{
442 struct ieee802154_hdr hdr;
443 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
444 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
445 struct ieee802154_mac_cb cb = { };
446 int hlen;
447
448 if (!daddr)
449 return -EINVAL;
450
451 memset(&hdr.fc, 0, sizeof(hdr.fc));
452 hdr.fc.type = IEEE802154_FC_TYPE_DATA;
453 hdr.fc.ack_request = wpan_dev->ackreq;
454 hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
455
456
457
458
459 if (mac802154_set_header_security(sdata, &hdr, &cb) < 0)
460 return -EINVAL;
461
462 hdr.dest.pan_id = wpan_dev->pan_id;
463 hdr.dest.mode = IEEE802154_ADDR_LONG;
464 ieee802154_be64_to_le64(&hdr.dest.extended_addr, daddr);
465
466 hdr.source.pan_id = hdr.dest.pan_id;
467 hdr.source.mode = IEEE802154_ADDR_LONG;
468
469 if (!saddr)
470 hdr.source.extended_addr = wpan_dev->extended_addr;
471 else
472 ieee802154_be64_to_le64(&hdr.source.extended_addr, saddr);
473
474 hlen = ieee802154_hdr_push(skb, &hdr);
475 if (hlen < 0)
476 return -EINVAL;
477
478 skb_reset_mac_header(skb);
479 skb->mac_len = hlen;
480
481 if (len > ieee802154_max_payload(&hdr))
482 return -EMSGSIZE;
483
484 return hlen;
485}
486
487static int
488mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
489{
490 struct ieee802154_hdr hdr;
491
492 if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
493 pr_debug("malformed packet\n");
494 return 0;
495 }
496
497 if (hdr.source.mode == IEEE802154_ADDR_LONG) {
498 ieee802154_le64_to_be64(haddr, &hdr.source.extended_addr);
499 return IEEE802154_EXTENDED_ADDR_LEN;
500 }
501
502 return 0;
503}
504
505static const struct header_ops mac802154_header_ops = {
506 .create = mac802154_header_create,
507 .parse = mac802154_header_parse,
508};
509
510static const struct net_device_ops mac802154_wpan_ops = {
511 .ndo_open = mac802154_wpan_open,
512 .ndo_stop = mac802154_slave_close,
513 .ndo_start_xmit = ieee802154_subif_start_xmit,
514 .ndo_do_ioctl = mac802154_wpan_ioctl,
515 .ndo_set_mac_address = mac802154_wpan_mac_addr,
516};
517
518static const struct net_device_ops mac802154_monitor_ops = {
519 .ndo_open = mac802154_wpan_open,
520 .ndo_stop = mac802154_slave_close,
521 .ndo_start_xmit = ieee802154_monitor_start_xmit,
522};
523
524static void mac802154_wpan_free(struct net_device *dev)
525{
526 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
527
528 mac802154_llsec_destroy(&sdata->sec);
529}
530
531static void ieee802154_if_setup(struct net_device *dev)
532{
533 dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN;
534 memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN);
535
536
537
538
539
540
541
542 dev->hard_header_len = IEEE802154_MIN_HEADER_LEN - 1;
543
544
545
546 dev->needed_tailroom = IEEE802154_MAX_AUTH_TAG_LEN +
547 IEEE802154_FCS_LEN;
548
549
550
551
552
553
554
555
556
557 dev->mtu = IEEE802154_MTU - IEEE802154_FCS_LEN -
558 dev->hard_header_len;
559 dev->tx_queue_len = 300;
560 dev->flags = IFF_NOARP | IFF_BROADCAST;
561}
562
563static int
564ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata,
565 enum nl802154_iftype type)
566{
567 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
568 int ret;
569 u8 tmp;
570
571
572 sdata->wpan_dev.iftype = type;
573
574 get_random_bytes(&tmp, sizeof(tmp));
575 atomic_set(&wpan_dev->bsn, tmp);
576 get_random_bytes(&tmp, sizeof(tmp));
577 atomic_set(&wpan_dev->dsn, tmp);
578
579
580 wpan_dev->min_be = 3;
581 wpan_dev->max_be = 5;
582 wpan_dev->csma_retries = 4;
583 wpan_dev->frame_retries = 3;
584
585 wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
586 wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
587
588 switch (type) {
589 case NL802154_IFTYPE_NODE:
590 ieee802154_be64_to_le64(&wpan_dev->extended_addr,
591 sdata->dev->dev_addr);
592
593 sdata->dev->header_ops = &mac802154_header_ops;
594 sdata->dev->extended->needs_free_netdev = true;
595 sdata->dev->extended->priv_destructor = mac802154_wpan_free;
596 sdata->dev->netdev_ops = &mac802154_wpan_ops;
597 sdata->dev->ml_priv = &mac802154_mlme_wpan;
598 wpan_dev->promiscuous_mode = false;
599 wpan_dev->header_ops = &ieee802154_header_ops;
600
601 mutex_init(&sdata->sec_mtx);
602
603 mac802154_llsec_init(&sdata->sec);
604 ret = mac802154_wpan_update_llsec(sdata->dev);
605 if (ret < 0)
606 return ret;
607
608 break;
609 case NL802154_IFTYPE_MONITOR:
610 sdata->dev->extended->needs_free_netdev = true;
611 sdata->dev->netdev_ops = &mac802154_monitor_ops;
612 wpan_dev->promiscuous_mode = true;
613 break;
614 default:
615 BUG();
616 }
617
618 return 0;
619}
620
621struct net_device *
622ieee802154_if_add(struct ieee802154_local *local, const char *name,
623 enum nl802154_iftype type, __le64 extended_addr)
624{
625 struct net_device *ndev = NULL;
626 struct ieee802154_sub_if_data *sdata = NULL;
627 int ret = -ENOMEM;
628
629 ASSERT_RTNL();
630
631 ndev = alloc_netdev(sizeof(*sdata), name,
632 ieee802154_if_setup);
633 if (!ndev)
634 return ERR_PTR(-ENOMEM);
635
636 ndev->needed_headroom = local->hw.extra_tx_headroom +
637 IEEE802154_MAX_HEADER_LEN;
638
639 ret = dev_alloc_name(ndev, ndev->name);
640 if (ret < 0)
641 goto err;
642
643 ieee802154_le64_to_be64(ndev->perm_addr,
644 &local->hw.phy->perm_extended_addr);
645 switch (type) {
646 case NL802154_IFTYPE_NODE:
647 ndev->type = ARPHRD_IEEE802154;
648 if (ieee802154_is_valid_extended_unicast_addr(extended_addr))
649 ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr);
650 else
651 memcpy(ndev->dev_addr, ndev->perm_addr,
652 IEEE802154_EXTENDED_ADDR_LEN);
653 break;
654 case NL802154_IFTYPE_MONITOR:
655 ndev->type = ARPHRD_IEEE802154_MONITOR;
656 break;
657 default:
658 ret = -EINVAL;
659 goto err;
660 }
661
662
663 SET_NETDEV_DEV(ndev, &local->phy->dev);
664 dev_net_set(ndev, wpan_phy_net(local->hw.phy));
665 sdata = netdev_priv(ndev);
666 ndev->ieee802154_ptr = &sdata->wpan_dev;
667 memcpy(sdata->name, ndev->name, IFNAMSIZ);
668 sdata->dev = ndev;
669 sdata->wpan_dev.wpan_phy = local->hw.phy;
670 sdata->local = local;
671
672
673 ret = ieee802154_setup_sdata(sdata, type);
674 if (ret)
675 goto err;
676
677 ret = register_netdevice(ndev);
678 if (ret < 0)
679 goto err;
680
681 mutex_lock(&local->iflist_mtx);
682 list_add_tail_rcu(&sdata->list, &local->interfaces);
683 mutex_unlock(&local->iflist_mtx);
684
685 return ndev;
686
687err:
688 free_netdev(ndev);
689 return ERR_PTR(ret);
690}
691
692void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata)
693{
694 ASSERT_RTNL();
695
696 mutex_lock(&sdata->local->iflist_mtx);
697 list_del_rcu(&sdata->list);
698 mutex_unlock(&sdata->local->iflist_mtx);
699
700 synchronize_rcu();
701 unregister_netdevice(sdata->dev);
702}
703
704void ieee802154_remove_interfaces(struct ieee802154_local *local)
705{
706 struct ieee802154_sub_if_data *sdata, *tmp;
707
708 mutex_lock(&local->iflist_mtx);
709 list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
710 list_del(&sdata->list);
711
712 unregister_netdevice(sdata->dev);
713 }
714 mutex_unlock(&local->iflist_mtx);
715}
716
717static int netdev_notify(struct notifier_block *nb,
718 unsigned long state, void *ptr)
719{
720 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
721 struct ieee802154_sub_if_data *sdata;
722
723 if (state != NETDEV_CHANGENAME)
724 return NOTIFY_DONE;
725
726 if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy)
727 return NOTIFY_DONE;
728
729 if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid)
730 return NOTIFY_DONE;
731
732 sdata = IEEE802154_DEV_TO_SUB_IF(dev);
733 memcpy(sdata->name, dev->name, IFNAMSIZ);
734
735 return NOTIFY_OK;
736}
737
738static struct notifier_block mac802154_netdev_notifier = {
739 .notifier_call = netdev_notify,
740};
741
742int ieee802154_iface_init(void)
743{
744 return register_netdevice_notifier_rh(&mac802154_netdev_notifier);
745}
746
747void ieee802154_iface_exit(void)
748{
749 unregister_netdevice_notifier_rh(&mac802154_netdev_notifier);
750}
751
