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]; | |
f458c647 | 44 | skb_pull(skb, 1); |
32bad7e3 | 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: | |
b70ab2e8 PB |
79 | { |
80 | u16 pan_id, short_addr; | |
81 | ||
82 | pan_id = le16_to_cpu(priv->pan_id); | |
83 | short_addr = le16_to_cpu(priv->short_addr); | |
84 | if (pan_id == IEEE802154_PANID_BROADCAST || | |
85 | short_addr == IEEE802154_ADDR_BROADCAST) { | |
32bad7e3 | 86 | err = -EADDRNOTAVAIL; |
87 | break; | |
88 | } | |
89 | ||
90 | sa->family = AF_IEEE802154; | |
91 | sa->addr.addr_type = IEEE802154_ADDR_SHORT; | |
b70ab2e8 PB |
92 | sa->addr.pan_id = pan_id; |
93 | sa->addr.short_addr = short_addr; | |
32bad7e3 | 94 | |
95 | err = 0; | |
96 | break; | |
b70ab2e8 | 97 | } |
32bad7e3 | 98 | case SIOCSIFADDR: |
99 | dev_warn(&dev->dev, | |
100 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommened!\n"); | |
101 | if (sa->family != AF_IEEE802154 || | |
102 | sa->addr.addr_type != IEEE802154_ADDR_SHORT || | |
103 | sa->addr.pan_id == IEEE802154_PANID_BROADCAST || | |
104 | sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || | |
105 | sa->addr.short_addr == IEEE802154_ADDR_UNDEF) { | |
106 | err = -EINVAL; | |
107 | break; | |
108 | } | |
109 | ||
b70ab2e8 PB |
110 | priv->pan_id = cpu_to_le16(sa->addr.pan_id); |
111 | priv->short_addr = cpu_to_le16(sa->addr.short_addr); | |
32bad7e3 | 112 | |
113 | err = 0; | |
114 | break; | |
115 | } | |
116 | ||
117 | spin_unlock_bh(&priv->mib_lock); | |
118 | return err; | |
119 | } | |
120 | ||
121 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
122 | { | |
123 | struct sockaddr *addr = p; | |
124 | ||
125 | if (netif_running(dev)) | |
126 | return -EBUSY; | |
127 | ||
128 | /* FIXME: validate addr */ | |
129 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
130 | mac802154_dev_set_ieee_addr(dev); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | static int mac802154_header_create(struct sk_buff *skb, | |
135 | struct net_device *dev, | |
136 | unsigned short type, | |
137 | const void *_daddr, | |
138 | const void *_saddr, | |
139 | unsigned len) | |
140 | { | |
376b7bd3 PB |
141 | const struct ieee802154_addr_sa *saddr = _saddr; |
142 | const struct ieee802154_addr_sa *daddr = _daddr; | |
143 | struct ieee802154_addr_sa dev_addr; | |
32bad7e3 | 144 | struct mac802154_sub_if_data *priv = netdev_priv(dev); |
145 | int pos = 2; | |
25060d8f | 146 | u8 head[MAC802154_FRAME_HARD_HEADER_LEN]; |
32bad7e3 | 147 | u16 fc; |
148 | ||
149 | if (!daddr) | |
150 | return -EINVAL; | |
151 | ||
32bad7e3 | 152 | head[pos++] = mac_cb(skb)->seq; /* DSN/BSN */ |
153 | fc = mac_cb_type(skb); | |
cf692061 TC |
154 | if (mac_cb_is_ackreq(skb)) |
155 | fc |= IEEE802154_FC_ACK_REQ; | |
32bad7e3 | 156 | |
157 | if (!saddr) { | |
158 | spin_lock_bh(&priv->mib_lock); | |
159 | ||
b70ab2e8 PB |
160 | if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
161 | priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
162 | priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
32bad7e3 | 163 | dev_addr.addr_type = IEEE802154_ADDR_LONG; |
164 | memcpy(dev_addr.hwaddr, dev->dev_addr, | |
165 | IEEE802154_ADDR_LEN); | |
166 | } else { | |
167 | dev_addr.addr_type = IEEE802154_ADDR_SHORT; | |
b70ab2e8 | 168 | dev_addr.short_addr = le16_to_cpu(priv->short_addr); |
32bad7e3 | 169 | } |
170 | ||
b70ab2e8 | 171 | dev_addr.pan_id = le16_to_cpu(priv->pan_id); |
32bad7e3 | 172 | saddr = &dev_addr; |
173 | ||
174 | spin_unlock_bh(&priv->mib_lock); | |
175 | } | |
176 | ||
177 | if (daddr->addr_type != IEEE802154_ADDR_NONE) { | |
178 | fc |= (daddr->addr_type << IEEE802154_FC_DAMODE_SHIFT); | |
179 | ||
180 | head[pos++] = daddr->pan_id & 0xff; | |
181 | head[pos++] = daddr->pan_id >> 8; | |
182 | ||
183 | if (daddr->addr_type == IEEE802154_ADDR_SHORT) { | |
184 | head[pos++] = daddr->short_addr & 0xff; | |
185 | head[pos++] = daddr->short_addr >> 8; | |
186 | } else { | |
187 | mac802154_haddr_copy_swap(head + pos, daddr->hwaddr); | |
188 | pos += IEEE802154_ADDR_LEN; | |
189 | } | |
190 | } | |
191 | ||
192 | if (saddr->addr_type != IEEE802154_ADDR_NONE) { | |
193 | fc |= (saddr->addr_type << IEEE802154_FC_SAMODE_SHIFT); | |
194 | ||
195 | if ((saddr->pan_id == daddr->pan_id) && | |
196 | (saddr->pan_id != IEEE802154_PANID_BROADCAST)) { | |
197 | /* PANID compression/intra PAN */ | |
198 | fc |= IEEE802154_FC_INTRA_PAN; | |
199 | } else { | |
200 | head[pos++] = saddr->pan_id & 0xff; | |
201 | head[pos++] = saddr->pan_id >> 8; | |
202 | } | |
203 | ||
204 | if (saddr->addr_type == IEEE802154_ADDR_SHORT) { | |
205 | head[pos++] = saddr->short_addr & 0xff; | |
206 | head[pos++] = saddr->short_addr >> 8; | |
207 | } else { | |
208 | mac802154_haddr_copy_swap(head + pos, saddr->hwaddr); | |
209 | pos += IEEE802154_ADDR_LEN; | |
210 | } | |
211 | } | |
212 | ||
213 | head[0] = fc; | |
214 | head[1] = fc >> 8; | |
215 | ||
216 | memcpy(skb_push(skb, pos), head, pos); | |
3e69162e AA |
217 | skb_reset_mac_header(skb); |
218 | skb->mac_len = pos; | |
32bad7e3 | 219 | |
220 | return pos; | |
221 | } | |
222 | ||
223 | static int | |
224 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
225 | { | |
226 | const u8 *hdr = skb_mac_header(skb); | |
227 | const u8 *tail = skb_tail_pointer(skb); | |
376b7bd3 | 228 | struct ieee802154_addr_sa *addr = (struct ieee802154_addr_sa *)haddr; |
32bad7e3 | 229 | u16 fc; |
230 | int da_type; | |
231 | ||
232 | if (hdr + 3 > tail) | |
233 | goto malformed; | |
234 | ||
235 | fc = hdr[0] | (hdr[1] << 8); | |
236 | ||
237 | hdr += 3; | |
238 | ||
239 | da_type = IEEE802154_FC_DAMODE(fc); | |
240 | addr->addr_type = IEEE802154_FC_SAMODE(fc); | |
241 | ||
242 | switch (da_type) { | |
243 | case IEEE802154_ADDR_NONE: | |
244 | if (fc & IEEE802154_FC_INTRA_PAN) | |
245 | goto malformed; | |
246 | break; | |
247 | case IEEE802154_ADDR_LONG: | |
248 | if (fc & IEEE802154_FC_INTRA_PAN) { | |
249 | if (hdr + 2 > tail) | |
250 | goto malformed; | |
251 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
252 | hdr += 2; | |
253 | } | |
254 | ||
255 | if (hdr + IEEE802154_ADDR_LEN > tail) | |
256 | goto malformed; | |
257 | ||
258 | hdr += IEEE802154_ADDR_LEN; | |
259 | break; | |
260 | case IEEE802154_ADDR_SHORT: | |
261 | if (fc & IEEE802154_FC_INTRA_PAN) { | |
262 | if (hdr + 2 > tail) | |
263 | goto malformed; | |
264 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
265 | hdr += 2; | |
266 | } | |
267 | ||
268 | if (hdr + 2 > tail) | |
269 | goto malformed; | |
270 | ||
271 | hdr += 2; | |
272 | break; | |
273 | default: | |
274 | goto malformed; | |
275 | ||
276 | } | |
277 | ||
278 | switch (addr->addr_type) { | |
279 | case IEEE802154_ADDR_NONE: | |
280 | break; | |
281 | case IEEE802154_ADDR_LONG: | |
282 | if (!(fc & IEEE802154_FC_INTRA_PAN)) { | |
283 | if (hdr + 2 > tail) | |
284 | goto malformed; | |
285 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
286 | hdr += 2; | |
287 | } | |
288 | ||
289 | if (hdr + IEEE802154_ADDR_LEN > tail) | |
290 | goto malformed; | |
291 | ||
292 | mac802154_haddr_copy_swap(addr->hwaddr, hdr); | |
293 | hdr += IEEE802154_ADDR_LEN; | |
294 | break; | |
295 | case IEEE802154_ADDR_SHORT: | |
296 | if (!(fc & IEEE802154_FC_INTRA_PAN)) { | |
297 | if (hdr + 2 > tail) | |
298 | goto malformed; | |
299 | addr->pan_id = hdr[0] | (hdr[1] << 8); | |
300 | hdr += 2; | |
301 | } | |
302 | ||
303 | if (hdr + 2 > tail) | |
304 | goto malformed; | |
305 | ||
306 | addr->short_addr = hdr[0] | (hdr[1] << 8); | |
307 | hdr += 2; | |
308 | break; | |
309 | default: | |
310 | goto malformed; | |
311 | } | |
312 | ||
376b7bd3 | 313 | return sizeof(struct ieee802154_addr_sa); |
32bad7e3 | 314 | |
315 | malformed: | |
316 | pr_debug("malformed packet\n"); | |
317 | return 0; | |
318 | } | |
319 | ||
320 | static netdev_tx_t | |
321 | mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev) | |
322 | { | |
323 | struct mac802154_sub_if_data *priv; | |
324 | u8 chan, page; | |
325 | ||
326 | priv = netdev_priv(dev); | |
327 | ||
328 | spin_lock_bh(&priv->mib_lock); | |
329 | chan = priv->chan; | |
330 | page = priv->page; | |
331 | spin_unlock_bh(&priv->mib_lock); | |
332 | ||
333 | if (chan == MAC802154_CHAN_NONE || | |
334 | page >= WPAN_NUM_PAGES || | |
fcefbe9f AO |
335 | chan >= WPAN_NUM_CHANNELS) { |
336 | kfree_skb(skb); | |
32bad7e3 | 337 | return NETDEV_TX_OK; |
fcefbe9f | 338 | } |
32bad7e3 | 339 | |
340 | skb->skb_iif = dev->ifindex; | |
341 | dev->stats.tx_packets++; | |
342 | dev->stats.tx_bytes += skb->len; | |
343 | ||
344 | return mac802154_tx(priv->hw, skb, page, chan); | |
345 | } | |
346 | ||
347 | static struct header_ops mac802154_header_ops = { | |
348 | .create = mac802154_header_create, | |
349 | .parse = mac802154_header_parse, | |
350 | }; | |
351 | ||
352 | static const struct net_device_ops mac802154_wpan_ops = { | |
353 | .ndo_open = mac802154_slave_open, | |
354 | .ndo_stop = mac802154_slave_close, | |
355 | .ndo_start_xmit = mac802154_wpan_xmit, | |
356 | .ndo_do_ioctl = mac802154_wpan_ioctl, | |
357 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
358 | }; | |
359 | ||
360 | void mac802154_wpan_setup(struct net_device *dev) | |
361 | { | |
362 | struct mac802154_sub_if_data *priv; | |
363 | ||
364 | dev->addr_len = IEEE802154_ADDR_LEN; | |
365 | memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN); | |
366 | ||
367 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
368 | dev->header_ops = &mac802154_header_ops; | |
369 | dev->needed_tailroom = 2; /* FCS */ | |
370 | dev->mtu = IEEE802154_MTU; | |
e937f583 | 371 | dev->tx_queue_len = 300; |
32bad7e3 | 372 | dev->type = ARPHRD_IEEE802154; |
373 | dev->flags = IFF_NOARP | IFF_BROADCAST; | |
374 | dev->watchdog_timeo = 0; | |
375 | ||
376 | dev->destructor = free_netdev; | |
377 | dev->netdev_ops = &mac802154_wpan_ops; | |
378 | dev->ml_priv = &mac802154_mlme_wpan; | |
379 | ||
380 | priv = netdev_priv(dev); | |
381 | priv->type = IEEE802154_DEV_WPAN; | |
382 | ||
383 | priv->chan = MAC802154_CHAN_NONE; | |
384 | priv->page = 0; | |
385 | ||
386 | spin_lock_init(&priv->mib_lock); | |
387 | ||
388 | get_random_bytes(&priv->bsn, 1); | |
389 | get_random_bytes(&priv->dsn, 1); | |
390 | ||
b70ab2e8 PB |
391 | priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
392 | priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
32bad7e3 | 393 | } |
394 | ||
395 | static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb) | |
396 | { | |
5ff3fec6 | 397 | return netif_rx_ni(skb); |
32bad7e3 | 398 | } |
399 | ||
400 | static int | |
401 | mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb) | |
402 | { | |
b70ab2e8 PB |
403 | u16 span, sshort; |
404 | ||
32bad7e3 | 405 | pr_debug("getting packet via slave interface %s\n", sdata->dev->name); |
406 | ||
407 | spin_lock_bh(&sdata->mib_lock); | |
408 | ||
b70ab2e8 PB |
409 | span = le16_to_cpu(sdata->pan_id); |
410 | sshort = le16_to_cpu(sdata->short_addr); | |
411 | ||
32bad7e3 | 412 | switch (mac_cb(skb)->da.addr_type) { |
413 | case IEEE802154_ADDR_NONE: | |
414 | if (mac_cb(skb)->sa.addr_type != IEEE802154_ADDR_NONE) | |
415 | /* FIXME: check if we are PAN coordinator */ | |
416 | skb->pkt_type = PACKET_OTHERHOST; | |
417 | else | |
418 | /* ACK comes with both addresses empty */ | |
419 | skb->pkt_type = PACKET_HOST; | |
420 | break; | |
421 | case IEEE802154_ADDR_LONG: | |
b70ab2e8 | 422 | if (mac_cb(skb)->da.pan_id != span && |
32bad7e3 | 423 | mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST) |
424 | skb->pkt_type = PACKET_OTHERHOST; | |
425 | else if (!memcmp(mac_cb(skb)->da.hwaddr, sdata->dev->dev_addr, | |
426 | IEEE802154_ADDR_LEN)) | |
427 | skb->pkt_type = PACKET_HOST; | |
428 | else | |
429 | skb->pkt_type = PACKET_OTHERHOST; | |
430 | break; | |
431 | case IEEE802154_ADDR_SHORT: | |
b70ab2e8 | 432 | if (mac_cb(skb)->da.pan_id != span && |
32bad7e3 | 433 | mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST) |
434 | skb->pkt_type = PACKET_OTHERHOST; | |
b70ab2e8 | 435 | else if (mac_cb(skb)->da.short_addr == sshort) |
32bad7e3 | 436 | skb->pkt_type = PACKET_HOST; |
437 | else if (mac_cb(skb)->da.short_addr == | |
438 | IEEE802154_ADDR_BROADCAST) | |
439 | skb->pkt_type = PACKET_BROADCAST; | |
440 | else | |
441 | skb->pkt_type = PACKET_OTHERHOST; | |
442 | break; | |
443 | default: | |
444 | break; | |
445 | } | |
446 | ||
447 | spin_unlock_bh(&sdata->mib_lock); | |
448 | ||
449 | skb->dev = sdata->dev; | |
450 | ||
451 | sdata->dev->stats.rx_packets++; | |
452 | sdata->dev->stats.rx_bytes += skb->len; | |
453 | ||
454 | switch (mac_cb_type(skb)) { | |
455 | case IEEE802154_FC_TYPE_DATA: | |
456 | return mac802154_process_data(sdata->dev, skb); | |
457 | default: | |
2cc33c7e WC |
458 | pr_warn("ieee802154: bad frame received (type = %d)\n", |
459 | mac_cb_type(skb)); | |
32bad7e3 | 460 | kfree_skb(skb); |
461 | return NET_RX_DROP; | |
462 | } | |
463 | } | |
464 | ||
465 | static int mac802154_parse_frame_start(struct sk_buff *skb) | |
466 | { | |
467 | u8 *head = skb->data; | |
468 | u16 fc; | |
469 | ||
470 | if (mac802154_fetch_skb_u16(skb, &fc) || | |
471 | mac802154_fetch_skb_u8(skb, &(mac_cb(skb)->seq))) | |
472 | goto err; | |
473 | ||
474 | pr_debug("fc: %04x dsn: %02x\n", fc, head[2]); | |
475 | ||
476 | mac_cb(skb)->flags = IEEE802154_FC_TYPE(fc); | |
477 | mac_cb(skb)->sa.addr_type = IEEE802154_FC_SAMODE(fc); | |
478 | mac_cb(skb)->da.addr_type = IEEE802154_FC_DAMODE(fc); | |
479 | ||
480 | if (fc & IEEE802154_FC_INTRA_PAN) | |
481 | mac_cb(skb)->flags |= MAC_CB_FLAG_INTRAPAN; | |
482 | ||
483 | if (mac_cb(skb)->da.addr_type != IEEE802154_ADDR_NONE) { | |
484 | if (mac802154_fetch_skb_u16(skb, &(mac_cb(skb)->da.pan_id))) | |
485 | goto err; | |
486 | ||
487 | /* source PAN id compression */ | |
488 | if (mac_cb_is_intrapan(skb)) | |
489 | mac_cb(skb)->sa.pan_id = mac_cb(skb)->da.pan_id; | |
490 | ||
491 | pr_debug("dest PAN addr: %04x\n", mac_cb(skb)->da.pan_id); | |
492 | ||
493 | if (mac_cb(skb)->da.addr_type == IEEE802154_ADDR_SHORT) { | |
494 | u16 *da = &(mac_cb(skb)->da.short_addr); | |
495 | ||
496 | if (mac802154_fetch_skb_u16(skb, da)) | |
497 | goto err; | |
498 | ||
499 | pr_debug("destination address is short: %04x\n", | |
500 | mac_cb(skb)->da.short_addr); | |
501 | } else { | |
502 | if (!pskb_may_pull(skb, IEEE802154_ADDR_LEN)) | |
503 | goto err; | |
504 | ||
505 | mac802154_haddr_copy_swap(mac_cb(skb)->da.hwaddr, | |
506 | skb->data); | |
507 | skb_pull(skb, IEEE802154_ADDR_LEN); | |
508 | ||
509 | pr_debug("destination address is hardware\n"); | |
510 | } | |
511 | } | |
512 | ||
513 | if (mac_cb(skb)->sa.addr_type != IEEE802154_ADDR_NONE) { | |
514 | /* non PAN-compression, fetch source address id */ | |
515 | if (!(mac_cb_is_intrapan(skb))) { | |
516 | u16 *sa_pan = &(mac_cb(skb)->sa.pan_id); | |
517 | ||
518 | if (mac802154_fetch_skb_u16(skb, sa_pan)) | |
519 | goto err; | |
520 | } | |
521 | ||
522 | pr_debug("source PAN addr: %04x\n", mac_cb(skb)->da.pan_id); | |
523 | ||
524 | if (mac_cb(skb)->sa.addr_type == IEEE802154_ADDR_SHORT) { | |
525 | u16 *sa = &(mac_cb(skb)->sa.short_addr); | |
526 | ||
527 | if (mac802154_fetch_skb_u16(skb, sa)) | |
528 | goto err; | |
529 | ||
530 | pr_debug("source address is short: %04x\n", | |
531 | mac_cb(skb)->sa.short_addr); | |
532 | } else { | |
533 | if (!pskb_may_pull(skb, IEEE802154_ADDR_LEN)) | |
534 | goto err; | |
535 | ||
536 | mac802154_haddr_copy_swap(mac_cb(skb)->sa.hwaddr, | |
537 | skb->data); | |
538 | skb_pull(skb, IEEE802154_ADDR_LEN); | |
539 | ||
540 | pr_debug("source address is hardware\n"); | |
541 | } | |
542 | } | |
543 | ||
544 | return 0; | |
545 | err: | |
546 | return -EINVAL; | |
547 | } | |
548 | ||
549 | void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb) | |
550 | { | |
551 | int ret; | |
552 | struct sk_buff *sskb; | |
553 | struct mac802154_sub_if_data *sdata; | |
554 | ||
555 | ret = mac802154_parse_frame_start(skb); | |
556 | if (ret) { | |
557 | pr_debug("got invalid frame\n"); | |
558 | return; | |
559 | } | |
560 | ||
561 | rcu_read_lock(); | |
562 | list_for_each_entry_rcu(sdata, &priv->slaves, list) { | |
563 | if (sdata->type != IEEE802154_DEV_WPAN) | |
564 | continue; | |
565 | ||
566 | sskb = skb_clone(skb, GFP_ATOMIC); | |
567 | if (sskb) | |
568 | mac802154_subif_frame(sdata, sskb); | |
569 | } | |
570 | rcu_read_unlock(); | |
571 | } |