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 | ||
9b0bb4a8 PB |
38 | static int mac802154_wpan_update_llsec(struct net_device *dev) |
39 | { | |
40 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
41 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); | |
42 | int rc = 0; | |
43 | ||
44 | if (ops->llsec) { | |
45 | struct ieee802154_llsec_params params; | |
46 | int changed = 0; | |
47 | ||
48 | params.pan_id = priv->pan_id; | |
49 | changed |= IEEE802154_LLSEC_PARAM_PAN_ID; | |
50 | ||
51 | params.hwaddr = priv->extended_addr; | |
52 | changed |= IEEE802154_LLSEC_PARAM_HWADDR; | |
53 | ||
54 | rc = ops->llsec->set_params(dev, ¶ms, changed); | |
55 | } | |
56 | ||
57 | return rc; | |
58 | } | |
59 | ||
32bad7e3 | 60 | static int |
61 | mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
62 | { | |
63 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
64 | struct sockaddr_ieee802154 *sa = | |
65 | (struct sockaddr_ieee802154 *)&ifr->ifr_addr; | |
66 | int err = -ENOIOCTLCMD; | |
67 | ||
68 | spin_lock_bh(&priv->mib_lock); | |
69 | ||
70 | switch (cmd) { | |
71 | case SIOCGIFADDR: | |
b70ab2e8 PB |
72 | { |
73 | u16 pan_id, short_addr; | |
74 | ||
75 | pan_id = le16_to_cpu(priv->pan_id); | |
76 | short_addr = le16_to_cpu(priv->short_addr); | |
77 | if (pan_id == IEEE802154_PANID_BROADCAST || | |
78 | short_addr == IEEE802154_ADDR_BROADCAST) { | |
32bad7e3 | 79 | err = -EADDRNOTAVAIL; |
80 | break; | |
81 | } | |
82 | ||
83 | sa->family = AF_IEEE802154; | |
84 | sa->addr.addr_type = IEEE802154_ADDR_SHORT; | |
b70ab2e8 PB |
85 | sa->addr.pan_id = pan_id; |
86 | sa->addr.short_addr = short_addr; | |
32bad7e3 | 87 | |
88 | err = 0; | |
89 | break; | |
b70ab2e8 | 90 | } |
32bad7e3 | 91 | case SIOCSIFADDR: |
92 | dev_warn(&dev->dev, | |
9b13494c | 93 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n"); |
32bad7e3 | 94 | if (sa->family != AF_IEEE802154 || |
95 | sa->addr.addr_type != IEEE802154_ADDR_SHORT || | |
96 | sa->addr.pan_id == IEEE802154_PANID_BROADCAST || | |
97 | sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || | |
98 | sa->addr.short_addr == IEEE802154_ADDR_UNDEF) { | |
99 | err = -EINVAL; | |
100 | break; | |
101 | } | |
102 | ||
b70ab2e8 PB |
103 | priv->pan_id = cpu_to_le16(sa->addr.pan_id); |
104 | priv->short_addr = cpu_to_le16(sa->addr.short_addr); | |
32bad7e3 | 105 | |
9b0bb4a8 | 106 | err = mac802154_wpan_update_llsec(dev); |
32bad7e3 | 107 | break; |
108 | } | |
109 | ||
110 | spin_unlock_bh(&priv->mib_lock); | |
111 | return err; | |
112 | } | |
113 | ||
114 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
115 | { | |
116 | struct sockaddr *addr = p; | |
117 | ||
118 | if (netif_running(dev)) | |
119 | return -EBUSY; | |
120 | ||
121 | /* FIXME: validate addr */ | |
122 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
123 | mac802154_dev_set_ieee_addr(dev); | |
9b0bb4a8 | 124 | return mac802154_wpan_update_llsec(dev); |
32bad7e3 | 125 | } |
126 | ||
e462ded6 PB |
127 | int mac802154_set_mac_params(struct net_device *dev, |
128 | const struct ieee802154_mac_params *params) | |
129 | { | |
130 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
131 | ||
132 | mutex_lock(&priv->hw->slaves_mtx); | |
133 | priv->mac_params = *params; | |
134 | mutex_unlock(&priv->hw->slaves_mtx); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | void mac802154_get_mac_params(struct net_device *dev, | |
140 | struct ieee802154_mac_params *params) | |
141 | { | |
142 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
143 | ||
144 | mutex_lock(&priv->hw->slaves_mtx); | |
145 | *params = priv->mac_params; | |
146 | mutex_unlock(&priv->hw->slaves_mtx); | |
147 | } | |
148 | ||
6ef0023a | 149 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
150 | { |
151 | int rc; | |
152 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
153 | struct wpan_phy *phy = priv->hw->phy; | |
154 | ||
155 | rc = mac802154_slave_open(dev); | |
156 | if (rc < 0) | |
157 | return rc; | |
158 | ||
159 | mutex_lock(&phy->pib_lock); | |
160 | ||
161 | if (phy->set_txpower) { | |
162 | rc = phy->set_txpower(phy, priv->mac_params.transmit_power); | |
163 | if (rc < 0) | |
164 | goto out; | |
165 | } | |
166 | ||
167 | if (phy->set_lbt) { | |
168 | rc = phy->set_lbt(phy, priv->mac_params.lbt); | |
169 | if (rc < 0) | |
170 | goto out; | |
171 | } | |
172 | ||
173 | if (phy->set_cca_mode) { | |
174 | rc = phy->set_cca_mode(phy, priv->mac_params.cca_mode); | |
175 | if (rc < 0) | |
176 | goto out; | |
177 | } | |
178 | ||
179 | if (phy->set_cca_ed_level) { | |
180 | rc = phy->set_cca_ed_level(phy, priv->mac_params.cca_ed_level); | |
181 | if (rc < 0) | |
182 | goto out; | |
183 | } | |
184 | ||
185 | if (phy->set_csma_params) { | |
186 | rc = phy->set_csma_params(phy, priv->mac_params.min_be, | |
187 | priv->mac_params.max_be, | |
188 | priv->mac_params.csma_retries); | |
189 | if (rc < 0) | |
190 | goto out; | |
191 | } | |
192 | ||
193 | if (phy->set_frame_retries) { | |
194 | rc = phy->set_frame_retries(phy, | |
195 | priv->mac_params.frame_retries); | |
196 | if (rc < 0) | |
197 | goto out; | |
198 | } | |
199 | ||
200 | mutex_unlock(&phy->pib_lock); | |
201 | return 0; | |
202 | ||
203 | out: | |
204 | mutex_unlock(&phy->pib_lock); | |
205 | return rc; | |
206 | } | |
207 | ||
f30be4d5 PB |
208 | static int mac802154_set_header_security(struct mac802154_sub_if_data *priv, |
209 | struct ieee802154_hdr *hdr, | |
210 | const struct ieee802154_mac_cb *cb) | |
211 | { | |
212 | struct ieee802154_llsec_params params; | |
213 | u8 level; | |
214 | ||
215 | mac802154_llsec_get_params(&priv->sec, ¶ms); | |
216 | ||
217 | if (!params.enabled && cb->secen_override && cb->secen) | |
218 | return -EINVAL; | |
219 | if (!params.enabled || | |
220 | (cb->secen_override && !cb->secen) || | |
221 | !params.out_level) | |
222 | return 0; | |
223 | if (cb->seclevel_override && !cb->seclevel) | |
224 | return -EINVAL; | |
225 | ||
226 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
227 | ||
228 | hdr->fc.security_enabled = 1; | |
229 | hdr->sec.level = level; | |
230 | hdr->sec.key_id_mode = params.out_key.mode; | |
231 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
232 | hdr->sec.short_src = params.out_key.short_source; | |
233 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
234 | hdr->sec.extended_src = params.out_key.extended_source; | |
235 | hdr->sec.key_id = params.out_key.id; | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
32bad7e3 | 240 | static int mac802154_header_create(struct sk_buff *skb, |
241 | struct net_device *dev, | |
242 | unsigned short type, | |
e6278d92 PB |
243 | const void *daddr, |
244 | const void *saddr, | |
32bad7e3 | 245 | unsigned len) |
246 | { | |
e6278d92 | 247 | struct ieee802154_hdr hdr; |
32bad7e3 | 248 | struct mac802154_sub_if_data *priv = netdev_priv(dev); |
32edc40a | 249 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 250 | int hlen; |
32bad7e3 | 251 | |
252 | if (!daddr) | |
253 | return -EINVAL; | |
254 | ||
e6278d92 | 255 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
256 | hdr.fc.type = cb->type; |
257 | hdr.fc.security_enabled = cb->secen; | |
258 | hdr.fc.ack_request = cb->ackreq; | |
259 | hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev); | |
32bad7e3 | 260 | |
f30be4d5 PB |
261 | if (mac802154_set_header_security(priv, &hdr, cb) < 0) |
262 | return -EINVAL; | |
263 | ||
32bad7e3 | 264 | if (!saddr) { |
265 | spin_lock_bh(&priv->mib_lock); | |
266 | ||
b70ab2e8 PB |
267 | if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
268 | priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
269 | priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 PB |
270 | hdr.source.mode = IEEE802154_ADDR_LONG; |
271 | hdr.source.extended_addr = priv->extended_addr; | |
32bad7e3 | 272 | } else { |
e6278d92 PB |
273 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
274 | hdr.source.short_addr = priv->short_addr; | |
32bad7e3 | 275 | } |
276 | ||
e6278d92 | 277 | hdr.source.pan_id = priv->pan_id; |
32bad7e3 | 278 | |
279 | spin_unlock_bh(&priv->mib_lock); | |
e6278d92 PB |
280 | } else { |
281 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 282 | } |
283 | ||
e6278d92 | 284 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 285 | |
e6278d92 PB |
286 | hlen = ieee802154_hdr_push(skb, &hdr); |
287 | if (hlen < 0) | |
288 | return -EINVAL; | |
32bad7e3 | 289 | |
3e69162e | 290 | skb_reset_mac_header(skb); |
e6278d92 | 291 | skb->mac_len = hlen; |
32bad7e3 | 292 | |
8c84296f | 293 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
294 | return -EMSGSIZE; |
295 | ||
e6278d92 | 296 | return hlen; |
32bad7e3 | 297 | } |
298 | ||
299 | static int | |
300 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
301 | { | |
e6278d92 PB |
302 | struct ieee802154_hdr hdr; |
303 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 304 | |
e6278d92 PB |
305 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
306 | pr_debug("malformed packet\n"); | |
307 | return 0; | |
32bad7e3 | 308 | } |
309 | ||
e6278d92 PB |
310 | *addr = hdr.source; |
311 | return sizeof(*addr); | |
32bad7e3 | 312 | } |
313 | ||
314 | static netdev_tx_t | |
315 | mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev) | |
316 | { | |
317 | struct mac802154_sub_if_data *priv; | |
318 | u8 chan, page; | |
f30be4d5 | 319 | int rc; |
32bad7e3 | 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 | |
f30be4d5 PB |
335 | rc = mac802154_llsec_encrypt(&priv->sec, skb); |
336 | if (rc) { | |
337 | pr_warn("encryption failed: %i\n", rc); | |
338 | kfree_skb(skb); | |
339 | return NETDEV_TX_OK; | |
340 | } | |
341 | ||
32bad7e3 | 342 | skb->skb_iif = dev->ifindex; |
343 | dev->stats.tx_packets++; | |
344 | dev->stats.tx_bytes += skb->len; | |
345 | ||
346 | return mac802154_tx(priv->hw, skb, page, chan); | |
347 | } | |
348 | ||
349 | static struct header_ops mac802154_header_ops = { | |
350 | .create = mac802154_header_create, | |
351 | .parse = mac802154_header_parse, | |
352 | }; | |
353 | ||
354 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 355 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 356 | .ndo_stop = mac802154_slave_close, |
357 | .ndo_start_xmit = mac802154_wpan_xmit, | |
358 | .ndo_do_ioctl = mac802154_wpan_ioctl, | |
359 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
360 | }; | |
361 | ||
f30be4d5 PB |
362 | static void mac802154_wpan_free(struct net_device *dev) |
363 | { | |
364 | struct mac802154_sub_if_data *priv = netdev_priv(dev); | |
365 | ||
366 | mac802154_llsec_destroy(&priv->sec); | |
367 | ||
368 | free_netdev(dev); | |
369 | } | |
370 | ||
32bad7e3 | 371 | void mac802154_wpan_setup(struct net_device *dev) |
372 | { | |
373 | struct mac802154_sub_if_data *priv; | |
374 | ||
375 | dev->addr_len = IEEE802154_ADDR_LEN; | |
376 | memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN); | |
377 | ||
378 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
379 | dev->header_ops = &mac802154_header_ops; | |
f30be4d5 | 380 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 381 | dev->mtu = IEEE802154_MTU; |
e937f583 | 382 | dev->tx_queue_len = 300; |
32bad7e3 | 383 | dev->type = ARPHRD_IEEE802154; |
384 | dev->flags = IFF_NOARP | IFF_BROADCAST; | |
385 | dev->watchdog_timeo = 0; | |
386 | ||
f30be4d5 | 387 | dev->destructor = mac802154_wpan_free; |
32bad7e3 | 388 | dev->netdev_ops = &mac802154_wpan_ops; |
389 | dev->ml_priv = &mac802154_mlme_wpan; | |
390 | ||
391 | priv = netdev_priv(dev); | |
392 | priv->type = IEEE802154_DEV_WPAN; | |
393 | ||
394 | priv->chan = MAC802154_CHAN_NONE; | |
395 | priv->page = 0; | |
396 | ||
397 | spin_lock_init(&priv->mib_lock); | |
f30be4d5 | 398 | mutex_init(&priv->sec_mtx); |
32bad7e3 | 399 | |
400 | get_random_bytes(&priv->bsn, 1); | |
401 | get_random_bytes(&priv->dsn, 1); | |
402 | ||
e462ded6 PB |
403 | /* defaults per 802.15.4-2011 */ |
404 | priv->mac_params.min_be = 3; | |
405 | priv->mac_params.max_be = 5; | |
406 | priv->mac_params.csma_retries = 4; | |
407 | priv->mac_params.frame_retries = -1; /* for compatibility, actual default is 3 */ | |
408 | ||
b70ab2e8 PB |
409 | priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
410 | priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 PB |
411 | |
412 | mac802154_llsec_init(&priv->sec); | |
32bad7e3 | 413 | } |
414 | ||
415 | static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb) | |
416 | { | |
5ff3fec6 | 417 | return netif_rx_ni(skb); |
32bad7e3 | 418 | } |
419 | ||
420 | static int | |
f30be4d5 PB |
421 | mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb, |
422 | const struct ieee802154_hdr *hdr) | |
32bad7e3 | 423 | { |
ae531b94 | 424 | __le16 span, sshort; |
f30be4d5 | 425 | int rc; |
b70ab2e8 | 426 | |
32bad7e3 | 427 | pr_debug("getting packet via slave interface %s\n", sdata->dev->name); |
428 | ||
429 | spin_lock_bh(&sdata->mib_lock); | |
430 | ||
ae531b94 PB |
431 | span = sdata->pan_id; |
432 | sshort = sdata->short_addr; | |
b70ab2e8 | 433 | |
ae531b94 | 434 | switch (mac_cb(skb)->dest.mode) { |
32bad7e3 | 435 | case IEEE802154_ADDR_NONE: |
ae531b94 | 436 | if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE) |
32bad7e3 | 437 | /* FIXME: check if we are PAN coordinator */ |
438 | skb->pkt_type = PACKET_OTHERHOST; | |
439 | else | |
440 | /* ACK comes with both addresses empty */ | |
441 | skb->pkt_type = PACKET_HOST; | |
442 | break; | |
443 | case IEEE802154_ADDR_LONG: | |
ae531b94 PB |
444 | if (mac_cb(skb)->dest.pan_id != span && |
445 | mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST)) | |
32bad7e3 | 446 | skb->pkt_type = PACKET_OTHERHOST; |
ae531b94 | 447 | else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr) |
32bad7e3 | 448 | skb->pkt_type = PACKET_HOST; |
449 | else | |
450 | skb->pkt_type = PACKET_OTHERHOST; | |
451 | break; | |
452 | case IEEE802154_ADDR_SHORT: | |
ae531b94 PB |
453 | if (mac_cb(skb)->dest.pan_id != span && |
454 | mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST)) | |
32bad7e3 | 455 | skb->pkt_type = PACKET_OTHERHOST; |
ae531b94 | 456 | else if (mac_cb(skb)->dest.short_addr == sshort) |
32bad7e3 | 457 | skb->pkt_type = PACKET_HOST; |
ae531b94 PB |
458 | else if (mac_cb(skb)->dest.short_addr == |
459 | cpu_to_le16(IEEE802154_ADDR_BROADCAST)) | |
32bad7e3 | 460 | skb->pkt_type = PACKET_BROADCAST; |
461 | else | |
462 | skb->pkt_type = PACKET_OTHERHOST; | |
463 | break; | |
464 | default: | |
6e361d6f MT |
465 | spin_unlock_bh(&sdata->mib_lock); |
466 | pr_debug("invalid dest mode\n"); | |
467 | kfree_skb(skb); | |
468 | return NET_RX_DROP; | |
32bad7e3 | 469 | } |
470 | ||
471 | spin_unlock_bh(&sdata->mib_lock); | |
472 | ||
473 | skb->dev = sdata->dev; | |
474 | ||
f30be4d5 PB |
475 | rc = mac802154_llsec_decrypt(&sdata->sec, skb); |
476 | if (rc) { | |
477 | pr_debug("decryption failed: %i\n", rc); | |
b288a496 | 478 | goto fail; |
f30be4d5 PB |
479 | } |
480 | ||
32bad7e3 | 481 | sdata->dev->stats.rx_packets++; |
482 | sdata->dev->stats.rx_bytes += skb->len; | |
483 | ||
32edc40a | 484 | switch (mac_cb(skb)->type) { |
32bad7e3 | 485 | case IEEE802154_FC_TYPE_DATA: |
486 | return mac802154_process_data(sdata->dev, skb); | |
487 | default: | |
2cc33c7e | 488 | pr_warn("ieee802154: bad frame received (type = %d)\n", |
32edc40a | 489 | mac_cb(skb)->type); |
b288a496 | 490 | goto fail; |
32bad7e3 | 491 | } |
b288a496 VB |
492 | |
493 | fail: | |
494 | kfree_skb(skb); | |
495 | return NET_RX_DROP; | |
32bad7e3 | 496 | } |
497 | ||
e6278d92 PB |
498 | static void mac802154_print_addr(const char *name, |
499 | const struct ieee802154_addr *addr) | |
32bad7e3 | 500 | { |
e6278d92 PB |
501 | if (addr->mode == IEEE802154_ADDR_NONE) |
502 | pr_debug("%s not present\n", name); | |
32bad7e3 | 503 | |
e6278d92 PB |
504 | pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id)); |
505 | if (addr->mode == IEEE802154_ADDR_SHORT) { | |
506 | pr_debug("%s is short: %04x\n", name, | |
507 | le16_to_cpu(addr->short_addr)); | |
508 | } else { | |
509 | u64 hw = swab64((__force u64) addr->extended_addr); | |
32bad7e3 | 510 | |
e6278d92 PB |
511 | pr_debug("%s is hardware: %8phC\n", name, &hw); |
512 | } | |
513 | } | |
32bad7e3 | 514 | |
f30be4d5 PB |
515 | static int mac802154_parse_frame_start(struct sk_buff *skb, |
516 | struct ieee802154_hdr *hdr) | |
e6278d92 | 517 | { |
e6278d92 | 518 | int hlen; |
32edc40a | 519 | struct ieee802154_mac_cb *cb = mac_cb_init(skb); |
32bad7e3 | 520 | |
f30be4d5 | 521 | hlen = ieee802154_hdr_pull(skb, hdr); |
e6278d92 PB |
522 | if (hlen < 0) |
523 | return -EINVAL; | |
32bad7e3 | 524 | |
e6278d92 | 525 | skb->mac_len = hlen; |
32bad7e3 | 526 | |
f30be4d5 PB |
527 | pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc), |
528 | hdr->seq); | |
32bad7e3 | 529 | |
f30be4d5 PB |
530 | cb->type = hdr->fc.type; |
531 | cb->ackreq = hdr->fc.ack_request; | |
532 | cb->secen = hdr->fc.security_enabled; | |
32bad7e3 | 533 | |
f30be4d5 PB |
534 | mac802154_print_addr("destination", &hdr->dest); |
535 | mac802154_print_addr("source", &hdr->source); | |
32bad7e3 | 536 | |
f30be4d5 PB |
537 | cb->source = hdr->source; |
538 | cb->dest = hdr->dest; | |
ae531b94 | 539 | |
f30be4d5 | 540 | if (hdr->fc.security_enabled) { |
e6278d92 | 541 | u64 key; |
32bad7e3 | 542 | |
f30be4d5 | 543 | pr_debug("seclevel %i\n", hdr->sec.level); |
32bad7e3 | 544 | |
f30be4d5 | 545 | switch (hdr->sec.key_id_mode) { |
e6278d92 PB |
546 | case IEEE802154_SCF_KEY_IMPLICIT: |
547 | pr_debug("implicit key\n"); | |
548 | break; | |
32bad7e3 | 549 | |
e6278d92 | 550 | case IEEE802154_SCF_KEY_INDEX: |
f30be4d5 | 551 | pr_debug("key %02x\n", hdr->sec.key_id); |
e6278d92 | 552 | break; |
32bad7e3 | 553 | |
e6278d92 PB |
554 | case IEEE802154_SCF_KEY_SHORT_INDEX: |
555 | pr_debug("key %04x:%04x %02x\n", | |
f30be4d5 PB |
556 | le32_to_cpu(hdr->sec.short_src) >> 16, |
557 | le32_to_cpu(hdr->sec.short_src) & 0xffff, | |
558 | hdr->sec.key_id); | |
e6278d92 | 559 | break; |
32bad7e3 | 560 | |
e6278d92 | 561 | case IEEE802154_SCF_KEY_HW_INDEX: |
f30be4d5 | 562 | key = swab64((__force u64) hdr->sec.extended_src); |
e6278d92 | 563 | pr_debug("key source %8phC %02x\n", &key, |
f30be4d5 | 564 | hdr->sec.key_id); |
e6278d92 | 565 | break; |
32bad7e3 | 566 | } |
567 | } | |
568 | ||
569 | return 0; | |
32bad7e3 | 570 | } |
571 | ||
572 | void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb) | |
573 | { | |
574 | int ret; | |
32bad7e3 | 575 | struct mac802154_sub_if_data *sdata; |
f30be4d5 | 576 | struct ieee802154_hdr hdr; |
32bad7e3 | 577 | |
f30be4d5 | 578 | ret = mac802154_parse_frame_start(skb, &hdr); |
32bad7e3 | 579 | if (ret) { |
580 | pr_debug("got invalid frame\n"); | |
7629d1ea | 581 | kfree_skb(skb); |
32bad7e3 | 582 | return; |
583 | } | |
584 | ||
585 | rcu_read_lock(); | |
586 | list_for_each_entry_rcu(sdata, &priv->slaves, list) { | |
2d3b5b0a PB |
587 | if (sdata->type != IEEE802154_DEV_WPAN || |
588 | !netif_running(sdata->dev)) | |
32bad7e3 | 589 | continue; |
590 | ||
2d3b5b0a PB |
591 | mac802154_subif_frame(sdata, skb, &hdr); |
592 | skb = NULL; | |
593 | break; | |
32bad7e3 | 594 | } |
595 | rcu_read_unlock(); | |
2d3b5b0a PB |
596 | |
597 | if (skb) | |
598 | kfree_skb(skb); | |
32bad7e3 | 599 | } |