Commit | Line | Data |
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32bad7e3 | 1 | /* |
2 | * Copyright 2007-2012 Siemens AG | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along | |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | * | |
17 | * Written by: | |
18 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | |
19 | * Sergey Lapin <slapin@ossfans.org> | |
20 | * Maxim Gorbachyov <maxim.gorbachev@siemens.com> | |
21 | * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> | |
22 | */ | |
23 | ||
24 | #include <linux/netdevice.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/if_arp.h> | |
27 | ||
28 | #include <net/rtnetlink.h> | |
29 | #include <linux/nl802154.h> | |
30 | #include <net/af_ieee802154.h> | |
31 | #include <net/mac802154.h> | |
32 | #include <net/ieee802154_netdev.h> | |
33 | #include <net/ieee802154.h> | |
34 | #include <net/wpan-phy.h> | |
35 | ||
36 | #include "mac802154.h" | |
37 | ||
38 | static inline int mac802154_fetch_skb_u8(struct sk_buff *skb, u8 *val) | |
39 | { | |
40 | if (unlikely(!pskb_may_pull(skb, 1))) | |
41 | return -EINVAL; | |
42 | ||
43 | *val = skb->data[0]; | |
44 | skb_pull(skb, 1); | |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
49 | static inline int mac802154_fetch_skb_u16(struct sk_buff *skb, u16 *val) | |
50 | { | |
51 | if (unlikely(!pskb_may_pull(skb, 2))) | |
52 | return -EINVAL; | |
53 | ||
54 | *val = skb->data[0] | (skb->data[1] << 8); | |
55 | skb_pull(skb, 2); | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | static inline void mac802154_haddr_copy_swap(u8 *dest, const u8 *src) | |
61 | { | |
62 | int i; | |
63 | for (i = 0; i < IEEE802154_ADDR_LEN; i++) | |
64 | dest[IEEE802154_ADDR_LEN - i - 1] = src[i]; | |
65 | } | |
66 | ||
67 | static int | |
68 | mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
69 | { | |
70 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
71 | struct sockaddr_ieee802154 *sa = | |
72 | (struct sockaddr_ieee802154 *)&ifr->ifr_addr; | |
73 | int err = -ENOIOCTLCMD; | |
74 | ||
75 | spin_lock_bh(&priv->mib_lock); | |
76 | ||
77 | switch (cmd) { | |
78 | case SIOCGIFADDR: | |
79 | if (priv->pan_id == IEEE802154_PANID_BROADCAST || | |
80 | priv->short_addr == IEEE802154_ADDR_BROADCAST) { | |
81 | err = -EADDRNOTAVAIL; | |
82 | break; | |
83 | } | |
84 | ||
85 | sa->family = AF_IEEE802154; | |
86 | sa->addr.addr_type = IEEE802154_ADDR_SHORT; | |
87 | sa->addr.pan_id = priv->pan_id; | |
88 | sa->addr.short_addr = priv->short_addr; | |
89 | ||
90 | err = 0; | |
91 | break; | |
92 | case SIOCSIFADDR: | |
93 | dev_warn(&dev->dev, | |
94 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommened!\n"); | |
95 | if (sa->family != AF_IEEE802154 || | |
96 | sa->addr.addr_type != IEEE802154_ADDR_SHORT || | |
97 | sa->addr.pan_id == IEEE802154_PANID_BROADCAST || | |
98 | sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || | |
99 | sa->addr.short_addr == IEEE802154_ADDR_UNDEF) { | |
100 | err = -EINVAL; | |
101 | break; | |
102 | } | |
103 | ||
104 | priv->pan_id = sa->addr.pan_id; | |
105 | priv->short_addr = sa->addr.short_addr; | |
106 | ||
107 | err = 0; | |
108 | break; | |
109 | } | |
110 | ||
111 | spin_unlock_bh(&priv->mib_lock); | |
112 | return err; | |
113 | } | |
114 | ||
115 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
116 | { | |
117 | struct sockaddr *addr = p; | |
118 | ||
119 | if (netif_running(dev)) | |
120 | return -EBUSY; | |
121 | ||
122 | /* FIXME: validate addr */ | |
123 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
124 | mac802154_dev_set_ieee_addr(dev); | |
125 | return 0; | |
126 | } | |
127 | ||
128 | static int mac802154_header_create(struct sk_buff *skb, | |
129 | struct net_device *dev, | |
130 | unsigned short type, | |
131 | const void *_daddr, | |
132 | const void *_saddr, | |
133 | unsigned len) | |
134 | { | |
135 | const struct ieee802154_addr *saddr = _saddr; | |
136 | const struct ieee802154_addr *daddr = _daddr; | |
137 | struct ieee802154_addr dev_addr; | |
138 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
139 | int pos = 2; | |
140 | u8 *head; | |
141 | u16 fc; | |
142 | ||
143 | if (!daddr) | |
144 | return -EINVAL; | |
145 | ||
146 | head = kzalloc(MAC802154_FRAME_HARD_HEADER_LEN, GFP_KERNEL); | |
147 | if (head == NULL) | |
148 | return -ENOMEM; | |
149 | ||
150 | head[pos++] = mac_cb(skb)->seq; /* DSN/BSN */ | |
151 | fc = mac_cb_type(skb); | |
152 | ||
153 | if (!saddr) { | |
154 | spin_lock_bh(&priv->mib_lock); | |
155 | ||
156 | if (priv->short_addr == IEEE802154_ADDR_BROADCAST || | |
157 | priv->short_addr == IEEE802154_ADDR_UNDEF || | |
158 | priv->pan_id == IEEE802154_PANID_BROADCAST) { | |
159 | dev_addr.addr_type = IEEE802154_ADDR_LONG; | |
160 | memcpy(dev_addr.hwaddr, dev->dev_addr, | |
161 | IEEE802154_ADDR_LEN); | |
162 | } else { | |
163 | dev_addr.addr_type = IEEE802154_ADDR_SHORT; | |
164 | dev_addr.short_addr = priv->short_addr; | |
165 | } | |
166 | ||
167 | dev_addr.pan_id = priv->pan_id; | |
168 | saddr = &dev_addr; | |
169 | ||
170 | spin_unlock_bh(&priv->mib_lock); | |
171 | } | |
172 | ||
173 | if (daddr->addr_type != IEEE802154_ADDR_NONE) { | |
174 | fc |= (daddr->addr_type << IEEE802154_FC_DAMODE_SHIFT); | |
175 | ||
176 | head[pos++] = daddr->pan_id & 0xff; | |
177 | head[pos++] = daddr->pan_id >> 8; | |
178 | ||
179 | if (daddr->addr_type == IEEE802154_ADDR_SHORT) { | |
180 | head[pos++] = daddr->short_addr & 0xff; | |
181 | head[pos++] = daddr->short_addr >> 8; | |
182 | } else { | |
183 | mac802154_haddr_copy_swap(head + pos, daddr->hwaddr); | |
184 | pos += IEEE802154_ADDR_LEN; | |
185 | } | |
186 | } | |
187 | ||
188 | if (saddr->addr_type != IEEE802154_ADDR_NONE) { | |
189 | fc |= (saddr->addr_type << IEEE802154_FC_SAMODE_SHIFT); | |
190 | ||
191 | if ((saddr->pan_id == daddr->pan_id) && | |
192 | (saddr->pan_id != IEEE802154_PANID_BROADCAST)) { | |
193 | /* PANID compression/intra PAN */ | |
194 | fc |= IEEE802154_FC_INTRA_PAN; | |
195 | } else { | |
196 | head[pos++] = saddr->pan_id & 0xff; | |
197 | head[pos++] = saddr->pan_id >> 8; | |
198 | } | |
199 | ||
200 | if (saddr->addr_type == IEEE802154_ADDR_SHORT) { | |
201 | head[pos++] = saddr->short_addr & 0xff; | |
202 | head[pos++] = saddr->short_addr >> 8; | |
203 | } else { | |
204 | mac802154_haddr_copy_swap(head + pos, saddr->hwaddr); | |
205 | pos += IEEE802154_ADDR_LEN; | |
206 | } | |
207 | } | |
208 | ||
209 | head[0] = fc; | |
210 | head[1] = fc >> 8; | |
211 | ||
212 | memcpy(skb_push(skb, pos), head, pos); | |
213 | kfree(head); | |
214 | ||
215 | return pos; | |
216 | } | |
217 | ||
218 | static int | |
219 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
220 | { | |
221 | const u8 *hdr = skb_mac_header(skb); | |
222 | const u8 *tail = skb_tail_pointer(skb); | |
223 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
224 | u16 fc; | |
225 | int da_type; | |
226 | ||
227 | if (hdr + 3 > tail) | |
228 | goto malformed; | |
229 | ||
230 | fc = hdr[0] | (hdr[1] << 8); | |
231 | ||
232 | hdr += 3; | |
233 | ||
234 | da_type = IEEE802154_FC_DAMODE(fc); | |
235 | addr->addr_type = IEEE802154_FC_SAMODE(fc); | |
236 | ||
237 | switch (da_type) { | |
238 | case IEEE802154_ADDR_NONE: | |
239 | if (fc & IEEE802154_FC_INTRA_PAN) | |
240 | goto malformed; | |
241 | break; | |
242 | case IEEE802154_ADDR_LONG: | |
243 | if (fc & IEEE802154_FC_INTRA_PAN) { | |
244 | if (hdr + 2 > tail) | |
245 | goto malformed; | |
246 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
247 | hdr += 2; | |
248 | } | |
249 | ||
250 | if (hdr + IEEE802154_ADDR_LEN > tail) | |
251 | goto malformed; | |
252 | ||
253 | hdr += IEEE802154_ADDR_LEN; | |
254 | break; | |
255 | case IEEE802154_ADDR_SHORT: | |
256 | if (fc & IEEE802154_FC_INTRA_PAN) { | |
257 | if (hdr + 2 > tail) | |
258 | goto malformed; | |
259 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
260 | hdr += 2; | |
261 | } | |
262 | ||
263 | if (hdr + 2 > tail) | |
264 | goto malformed; | |
265 | ||
266 | hdr += 2; | |
267 | break; | |
268 | default: | |
269 | goto malformed; | |
270 | ||
271 | } | |
272 | ||
273 | switch (addr->addr_type) { | |
274 | case IEEE802154_ADDR_NONE: | |
275 | break; | |
276 | case IEEE802154_ADDR_LONG: | |
277 | if (!(fc & IEEE802154_FC_INTRA_PAN)) { | |
278 | if (hdr + 2 > tail) | |
279 | goto malformed; | |
280 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
281 | hdr += 2; | |
282 | } | |
283 | ||
284 | if (hdr + IEEE802154_ADDR_LEN > tail) | |
285 | goto malformed; | |
286 | ||
287 | mac802154_haddr_copy_swap(addr->hwaddr, hdr); | |
288 | hdr += IEEE802154_ADDR_LEN; | |
289 | break; | |
290 | case IEEE802154_ADDR_SHORT: | |
291 | if (!(fc & IEEE802154_FC_INTRA_PAN)) { | |
292 | if (hdr + 2 > tail) | |
293 | goto malformed; | |
294 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
295 | hdr += 2; | |
296 | } | |
297 | ||
298 | if (hdr + 2 > tail) | |
299 | goto malformed; | |
300 | ||
301 | addr->short_addr = hdr[0] | (hdr[1] << 8); | |
302 | hdr += 2; | |
303 | break; | |
304 | default: | |
305 | goto malformed; | |
306 | } | |
307 | ||
308 | return sizeof(struct ieee802154_addr); | |
309 | ||
310 | malformed: | |
311 | pr_debug("malformed packet\n"); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | static netdev_tx_t | |
316 | mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev) | |
317 | { | |
318 | struct mac802154_sub_if_data *priv; | |
319 | u8 chan, page; | |
320 | ||
321 | priv = netdev_priv(dev); | |
322 | ||
323 | spin_lock_bh(&priv->mib_lock); | |
324 | chan = priv->chan; | |
325 | page = priv->page; | |
326 | spin_unlock_bh(&priv->mib_lock); | |
327 | ||
328 | if (chan == MAC802154_CHAN_NONE || | |
329 | page >= WPAN_NUM_PAGES || | |
fcefbe9f AO |
330 | chan >= WPAN_NUM_CHANNELS) { |
331 | kfree_skb(skb); | |
32bad7e3 | 332 | return NETDEV_TX_OK; |
fcefbe9f | 333 | } |
32bad7e3 | 334 | |
335 | skb->skb_iif = dev->ifindex; | |
336 | dev->stats.tx_packets++; | |
337 | dev->stats.tx_bytes += skb->len; | |
338 | ||
339 | return mac802154_tx(priv->hw, skb, page, chan); | |
340 | } | |
341 | ||
342 | static struct header_ops mac802154_header_ops = { | |
343 | .create = mac802154_header_create, | |
344 | .parse = mac802154_header_parse, | |
345 | }; | |
346 | ||
347 | static const struct net_device_ops mac802154_wpan_ops = { | |
348 | .ndo_open = mac802154_slave_open, | |
349 | .ndo_stop = mac802154_slave_close, | |
350 | .ndo_start_xmit = mac802154_wpan_xmit, | |
351 | .ndo_do_ioctl = mac802154_wpan_ioctl, | |
352 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
353 | }; | |
354 | ||
355 | void mac802154_wpan_setup(struct net_device *dev) | |
356 | { | |
357 | struct mac802154_sub_if_data *priv; | |
358 | ||
359 | dev->addr_len = IEEE802154_ADDR_LEN; | |
360 | memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN); | |
361 | ||
362 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
363 | dev->header_ops = &mac802154_header_ops; | |
364 | dev->needed_tailroom = 2; /* FCS */ | |
365 | dev->mtu = IEEE802154_MTU; | |
366 | dev->tx_queue_len = 10; | |
367 | dev->type = ARPHRD_IEEE802154; | |
368 | dev->flags = IFF_NOARP | IFF_BROADCAST; | |
369 | dev->watchdog_timeo = 0; | |
370 | ||
371 | dev->destructor = free_netdev; | |
372 | dev->netdev_ops = &mac802154_wpan_ops; | |
373 | dev->ml_priv = &mac802154_mlme_wpan; | |
374 | ||
375 | priv = netdev_priv(dev); | |
376 | priv->type = IEEE802154_DEV_WPAN; | |
377 | ||
378 | priv->chan = MAC802154_CHAN_NONE; | |
379 | priv->page = 0; | |
380 | ||
381 | spin_lock_init(&priv->mib_lock); | |
382 | ||
383 | get_random_bytes(&priv->bsn, 1); | |
384 | get_random_bytes(&priv->dsn, 1); | |
385 | ||
386 | priv->pan_id = IEEE802154_PANID_BROADCAST; | |
387 | priv->short_addr = IEEE802154_ADDR_BROADCAST; | |
388 | } | |
389 | ||
390 | static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb) | |
391 | { | |
5ff3fec6 | 392 | return netif_rx_ni(skb); |
32bad7e3 | 393 | } |
394 | ||
395 | static int | |
396 | mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb) | |
397 | { | |
398 | pr_debug("getting packet via slave interface %s\n", sdata->dev->name); | |
399 | ||
400 | spin_lock_bh(&sdata->mib_lock); | |
401 | ||
402 | switch (mac_cb(skb)->da.addr_type) { | |
403 | case IEEE802154_ADDR_NONE: | |
404 | if (mac_cb(skb)->sa.addr_type != IEEE802154_ADDR_NONE) | |
405 | /* FIXME: check if we are PAN coordinator */ | |
406 | skb->pkt_type = PACKET_OTHERHOST; | |
407 | else | |
408 | /* ACK comes with both addresses empty */ | |
409 | skb->pkt_type = PACKET_HOST; | |
410 | break; | |
411 | case IEEE802154_ADDR_LONG: | |
412 | if (mac_cb(skb)->da.pan_id != sdata->pan_id && | |
413 | mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST) | |
414 | skb->pkt_type = PACKET_OTHERHOST; | |
415 | else if (!memcmp(mac_cb(skb)->da.hwaddr, sdata->dev->dev_addr, | |
416 | IEEE802154_ADDR_LEN)) | |
417 | skb->pkt_type = PACKET_HOST; | |
418 | else | |
419 | skb->pkt_type = PACKET_OTHERHOST; | |
420 | break; | |
421 | case IEEE802154_ADDR_SHORT: | |
422 | if (mac_cb(skb)->da.pan_id != sdata->pan_id && | |
423 | mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST) | |
424 | skb->pkt_type = PACKET_OTHERHOST; | |
425 | else if (mac_cb(skb)->da.short_addr == sdata->short_addr) | |
426 | skb->pkt_type = PACKET_HOST; | |
427 | else if (mac_cb(skb)->da.short_addr == | |
428 | IEEE802154_ADDR_BROADCAST) | |
429 | skb->pkt_type = PACKET_BROADCAST; | |
430 | else | |
431 | skb->pkt_type = PACKET_OTHERHOST; | |
432 | break; | |
433 | default: | |
434 | break; | |
435 | } | |
436 | ||
437 | spin_unlock_bh(&sdata->mib_lock); | |
438 | ||
439 | skb->dev = sdata->dev; | |
440 | ||
441 | sdata->dev->stats.rx_packets++; | |
442 | sdata->dev->stats.rx_bytes += skb->len; | |
443 | ||
444 | switch (mac_cb_type(skb)) { | |
445 | case IEEE802154_FC_TYPE_DATA: | |
446 | return mac802154_process_data(sdata->dev, skb); | |
447 | default: | |
448 | pr_warning("ieee802154: bad frame received (type = %d)\n", | |
449 | mac_cb_type(skb)); | |
450 | kfree_skb(skb); | |
451 | return NET_RX_DROP; | |
452 | } | |
453 | } | |
454 | ||
455 | static int mac802154_parse_frame_start(struct sk_buff *skb) | |
456 | { | |
457 | u8 *head = skb->data; | |
458 | u16 fc; | |
459 | ||
460 | if (mac802154_fetch_skb_u16(skb, &fc) || | |
461 | mac802154_fetch_skb_u8(skb, &(mac_cb(skb)->seq))) | |
462 | goto err; | |
463 | ||
464 | pr_debug("fc: %04x dsn: %02x\n", fc, head[2]); | |
465 | ||
466 | mac_cb(skb)->flags = IEEE802154_FC_TYPE(fc); | |
467 | mac_cb(skb)->sa.addr_type = IEEE802154_FC_SAMODE(fc); | |
468 | mac_cb(skb)->da.addr_type = IEEE802154_FC_DAMODE(fc); | |
469 | ||
470 | if (fc & IEEE802154_FC_INTRA_PAN) | |
471 | mac_cb(skb)->flags |= MAC_CB_FLAG_INTRAPAN; | |
472 | ||
473 | if (mac_cb(skb)->da.addr_type != IEEE802154_ADDR_NONE) { | |
474 | if (mac802154_fetch_skb_u16(skb, &(mac_cb(skb)->da.pan_id))) | |
475 | goto err; | |
476 | ||
477 | /* source PAN id compression */ | |
478 | if (mac_cb_is_intrapan(skb)) | |
479 | mac_cb(skb)->sa.pan_id = mac_cb(skb)->da.pan_id; | |
480 | ||
481 | pr_debug("dest PAN addr: %04x\n", mac_cb(skb)->da.pan_id); | |
482 | ||
483 | if (mac_cb(skb)->da.addr_type == IEEE802154_ADDR_SHORT) { | |
484 | u16 *da = &(mac_cb(skb)->da.short_addr); | |
485 | ||
486 | if (mac802154_fetch_skb_u16(skb, da)) | |
487 | goto err; | |
488 | ||
489 | pr_debug("destination address is short: %04x\n", | |
490 | mac_cb(skb)->da.short_addr); | |
491 | } else { | |
492 | if (!pskb_may_pull(skb, IEEE802154_ADDR_LEN)) | |
493 | goto err; | |
494 | ||
495 | mac802154_haddr_copy_swap(mac_cb(skb)->da.hwaddr, | |
496 | skb->data); | |
497 | skb_pull(skb, IEEE802154_ADDR_LEN); | |
498 | ||
499 | pr_debug("destination address is hardware\n"); | |
500 | } | |
501 | } | |
502 | ||
503 | if (mac_cb(skb)->sa.addr_type != IEEE802154_ADDR_NONE) { | |
504 | /* non PAN-compression, fetch source address id */ | |
505 | if (!(mac_cb_is_intrapan(skb))) { | |
506 | u16 *sa_pan = &(mac_cb(skb)->sa.pan_id); | |
507 | ||
508 | if (mac802154_fetch_skb_u16(skb, sa_pan)) | |
509 | goto err; | |
510 | } | |
511 | ||
512 | pr_debug("source PAN addr: %04x\n", mac_cb(skb)->da.pan_id); | |
513 | ||
514 | if (mac_cb(skb)->sa.addr_type == IEEE802154_ADDR_SHORT) { | |
515 | u16 *sa = &(mac_cb(skb)->sa.short_addr); | |
516 | ||
517 | if (mac802154_fetch_skb_u16(skb, sa)) | |
518 | goto err; | |
519 | ||
520 | pr_debug("source address is short: %04x\n", | |
521 | mac_cb(skb)->sa.short_addr); | |
522 | } else { | |
523 | if (!pskb_may_pull(skb, IEEE802154_ADDR_LEN)) | |
524 | goto err; | |
525 | ||
526 | mac802154_haddr_copy_swap(mac_cb(skb)->sa.hwaddr, | |
527 | skb->data); | |
528 | skb_pull(skb, IEEE802154_ADDR_LEN); | |
529 | ||
530 | pr_debug("source address is hardware\n"); | |
531 | } | |
532 | } | |
533 | ||
534 | return 0; | |
535 | err: | |
536 | return -EINVAL; | |
537 | } | |
538 | ||
539 | void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb) | |
540 | { | |
541 | int ret; | |
542 | struct sk_buff *sskb; | |
543 | struct mac802154_sub_if_data *sdata; | |
544 | ||
545 | ret = mac802154_parse_frame_start(skb); | |
546 | if (ret) { | |
547 | pr_debug("got invalid frame\n"); | |
548 | return; | |
549 | } | |
550 | ||
551 | rcu_read_lock(); | |
552 | list_for_each_entry_rcu(sdata, &priv->slaves, list) { | |
553 | if (sdata->type != IEEE802154_DEV_WPAN) | |
554 | continue; | |
555 | ||
556 | sskb = skb_clone(skb, GFP_ATOMIC); | |
557 | if (sskb) | |
558 | mac802154_subif_frame(sdata, sskb); | |
559 | } | |
560 | rcu_read_unlock(); | |
561 | } |