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 | * | |
32bad7e3 | 13 | * Written by: |
14 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | |
15 | * Sergey Lapin <slapin@ossfans.org> | |
16 | * Maxim Gorbachyov <maxim.gorbachev@siemens.com> | |
17 | * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> | |
18 | */ | |
19 | ||
20 | #include <linux/netdevice.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/if_arp.h> | |
4ca24aca | 23 | #include <linux/ieee802154.h> |
32bad7e3 | 24 | |
944742a3 | 25 | #include <net/nl802154.h> |
32bad7e3 | 26 | #include <net/mac802154.h> |
27 | #include <net/ieee802154_netdev.h> | |
5ad60d36 | 28 | #include <net/cfg802154.h> |
32bad7e3 | 29 | |
0f1556bc | 30 | #include "ieee802154_i.h" |
59cb300f | 31 | #include "driver-ops.h" |
32bad7e3 | 32 | |
d77b4852 | 33 | int mac802154_wpan_update_llsec(struct net_device *dev) |
9b0bb4a8 | 34 | { |
59d19cd7 | 35 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
9b0bb4a8 | 36 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
863e88f2 | 37 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
9b0bb4a8 PB |
38 | int rc = 0; |
39 | ||
40 | if (ops->llsec) { | |
41 | struct ieee802154_llsec_params params; | |
42 | int changed = 0; | |
43 | ||
863e88f2 | 44 | params.pan_id = wpan_dev->pan_id; |
9b0bb4a8 PB |
45 | changed |= IEEE802154_LLSEC_PARAM_PAN_ID; |
46 | ||
863e88f2 | 47 | params.hwaddr = wpan_dev->extended_addr; |
9b0bb4a8 PB |
48 | changed |= IEEE802154_LLSEC_PARAM_HWADDR; |
49 | ||
50 | rc = ops->llsec->set_params(dev, ¶ms, changed); | |
51 | } | |
52 | ||
53 | return rc; | |
54 | } | |
55 | ||
32bad7e3 | 56 | static int |
57 | mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
58 | { | |
59d19cd7 | 59 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 60 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32bad7e3 | 61 | struct sockaddr_ieee802154 *sa = |
62 | (struct sockaddr_ieee802154 *)&ifr->ifr_addr; | |
63 | int err = -ENOIOCTLCMD; | |
64 | ||
e34fd879 LB |
65 | if (cmd != SIOCGIFADDR && cmd != SIOCSIFADDR) |
66 | return err; | |
67 | ||
4a669f7d | 68 | rtnl_lock(); |
32bad7e3 | 69 | |
70 | switch (cmd) { | |
71 | case SIOCGIFADDR: | |
b70ab2e8 PB |
72 | { |
73 | u16 pan_id, short_addr; | |
74 | ||
863e88f2 AA |
75 | pan_id = le16_to_cpu(wpan_dev->pan_id); |
76 | short_addr = le16_to_cpu(wpan_dev->short_addr); | |
b70ab2e8 PB |
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: |
f7cb96f1 | 92 | if (netif_running(dev)) { |
4a669f7d | 93 | rtnl_unlock(); |
f7cb96f1 AA |
94 | return -EBUSY; |
95 | } | |
96 | ||
32bad7e3 | 97 | dev_warn(&dev->dev, |
9b13494c | 98 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n"); |
32bad7e3 | 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 | ||
863e88f2 AA |
108 | wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id); |
109 | wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr); | |
32bad7e3 | 110 | |
9b0bb4a8 | 111 | err = mac802154_wpan_update_llsec(dev); |
32bad7e3 | 112 | break; |
113 | } | |
114 | ||
4a669f7d | 115 | rtnl_unlock(); |
32bad7e3 | 116 | return err; |
117 | } | |
118 | ||
119 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
120 | { | |
776e59de | 121 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
32bad7e3 | 122 | struct sockaddr *addr = p; |
ea7053c1 | 123 | __le64 extended_addr; |
32bad7e3 | 124 | |
125 | if (netif_running(dev)) | |
126 | return -EBUSY; | |
127 | ||
09095fdc AA |
128 | /* lowpan need to be down for update |
129 | * SLAAC address after ifup | |
130 | */ | |
131 | if (sdata->wpan_dev.lowpan_dev) { | |
132 | if (netif_running(sdata->wpan_dev.lowpan_dev)) | |
133 | return -EBUSY; | |
134 | } | |
135 | ||
705cbbbe | 136 | ieee802154_be64_to_le64(&extended_addr, addr->sa_data); |
daf4e2c8 | 137 | if (!ieee802154_is_valid_extended_unicast_addr(extended_addr)) |
ea7053c1 AA |
138 | return -EINVAL; |
139 | ||
32bad7e3 | 140 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
863e88f2 | 141 | sdata->wpan_dev.extended_addr = extended_addr; |
776e59de | 142 | |
09095fdc AA |
143 | /* update lowpan interface mac address when |
144 | * wpan mac has been changed | |
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 | ||
9b0bb4a8 | 150 | return mac802154_wpan_update_llsec(dev); |
32bad7e3 | 151 | } |
152 | ||
95c0aa15 AA |
153 | static 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 | ||
19ec690a AA |
203 | static int mac802154_slave_open(struct net_device *dev) |
204 | { | |
205 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
19ec690a | 206 | struct ieee802154_local *local = sdata->local; |
5c698e8b | 207 | int res; |
19ec690a AA |
208 | |
209 | ASSERT_RTNL(); | |
210 | ||
0ea3da64 | 211 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 212 | |
74457641 | 213 | if (!local->open_count) { |
95c0aa15 AA |
214 | res = ieee802154_setup_hw(sdata); |
215 | if (res) | |
216 | goto err; | |
217 | ||
59cb300f | 218 | res = drv_start(local); |
19ec690a AA |
219 | if (res) |
220 | goto err; | |
221 | } | |
222 | ||
74457641 | 223 | local->open_count++; |
19ec690a AA |
224 | netif_start_queue(dev); |
225 | return 0; | |
226 | err: | |
0ea3da64 AA |
227 | /* might already be clear but that doesn't matter */ |
228 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
229 | |
230 | return res; | |
231 | } | |
232 | ||
bd37a78d AA |
233 | static int |
234 | ieee802154_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) { | |
8bf9538a AA |
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) | |
bd37a78d AA |
249 | return -EBUSY; |
250 | } | |
251 | ||
252 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { | |
8bf9538a AA |
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) | |
bd37a78d AA |
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 | ||
272 | static int | |
273 | ieee802154_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 | /* we hold the RTNL here so can safely walk the list */ | |
281 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
282 | if (nsdata != sdata && ieee802154_sdata_running(nsdata)) { | |
283 | int ret; | |
284 | ||
cd1c5665 AA |
285 | /* TODO currently we don't support multiple node types |
286 | * we need to run skb_clone at rx path. Check if there | |
287 | * exist really an use case if we need to support | |
288 | * multiple node types at the same time. | |
289 | */ | |
ed65963b AA |
290 | if (wpan_dev->iftype == NL802154_IFTYPE_NODE && |
291 | nsdata->wpan_dev.iftype == NL802154_IFTYPE_NODE) | |
cd1c5665 AA |
292 | return -EBUSY; |
293 | ||
bd37a78d AA |
294 | /* check all phy mac sublayer settings are the same. |
295 | * We have only one phy, different values makes trouble. | |
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 | ||
6ef0023a | 307 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
308 | { |
309 | int rc; | |
59d19cd7 | 310 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 311 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
e462ded6 | 312 | |
ed65963b | 313 | rc = ieee802154_check_concurrent_iface(sdata, wpan_dev->iftype); |
bd37a78d AA |
314 | if (rc < 0) |
315 | return rc; | |
316 | ||
95c0aa15 | 317 | return mac802154_slave_open(dev); |
e462ded6 PB |
318 | } |
319 | ||
19ec690a AA |
320 | static 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); | |
74457641 | 328 | local->open_count--; |
19ec690a | 329 | |
0ea3da64 | 330 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 331 | |
c4227c8a AA |
332 | if (!local->open_count) |
333 | ieee802154_stop_device(local); | |
19ec690a AA |
334 | |
335 | return 0; | |
336 | } | |
337 | ||
036562f9 | 338 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
339 | struct ieee802154_hdr *hdr, |
340 | const struct ieee802154_mac_cb *cb) | |
341 | { | |
342 | struct ieee802154_llsec_params params; | |
343 | u8 level; | |
344 | ||
036562f9 | 345 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
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 | ||
32bad7e3 | 370 | static int mac802154_header_create(struct sk_buff *skb, |
371 | struct net_device *dev, | |
372 | unsigned short type, | |
e6278d92 PB |
373 | const void *daddr, |
374 | const void *saddr, | |
32bad7e3 | 375 | unsigned len) |
376 | { | |
e6278d92 | 377 | struct ieee802154_hdr hdr; |
59d19cd7 | 378 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 379 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32edc40a | 380 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 381 | int hlen; |
32bad7e3 | 382 | |
383 | if (!daddr) | |
384 | return -EINVAL; | |
385 | ||
e6278d92 | 386 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
387 | hdr.fc.type = cb->type; |
388 | hdr.fc.security_enabled = cb->secen; | |
389 | hdr.fc.ack_request = cb->ackreq; | |
344f8c11 | 390 | hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF; |
32bad7e3 | 391 | |
036562f9 | 392 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
393 | return -EINVAL; |
394 | ||
32bad7e3 | 395 | if (!saddr) { |
863e88f2 AA |
396 | if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
397 | wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
398 | wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 399 | hdr.source.mode = IEEE802154_ADDR_LONG; |
863e88f2 | 400 | hdr.source.extended_addr = wpan_dev->extended_addr; |
32bad7e3 | 401 | } else { |
e6278d92 | 402 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
863e88f2 | 403 | hdr.source.short_addr = wpan_dev->short_addr; |
32bad7e3 | 404 | } |
405 | ||
863e88f2 | 406 | hdr.source.pan_id = wpan_dev->pan_id; |
e6278d92 PB |
407 | } else { |
408 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 409 | } |
410 | ||
e6278d92 | 411 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 412 | |
e6278d92 PB |
413 | hlen = ieee802154_hdr_push(skb, &hdr); |
414 | if (hlen < 0) | |
415 | return -EINVAL; | |
32bad7e3 | 416 | |
3e69162e | 417 | skb_reset_mac_header(skb); |
e6278d92 | 418 | skb->mac_len = hlen; |
32bad7e3 | 419 | |
8c84296f | 420 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
421 | return -EMSGSIZE; |
422 | ||
e6278d92 | 423 | return hlen; |
32bad7e3 | 424 | } |
425 | ||
426 | static int | |
427 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
428 | { | |
e6278d92 PB |
429 | struct ieee802154_hdr hdr; |
430 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 431 | |
e6278d92 PB |
432 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
433 | pr_debug("malformed packet\n"); | |
434 | return 0; | |
32bad7e3 | 435 | } |
436 | ||
e6278d92 PB |
437 | *addr = hdr.source; |
438 | return sizeof(*addr); | |
32bad7e3 | 439 | } |
440 | ||
32bad7e3 | 441 | static struct header_ops mac802154_header_ops = { |
442 | .create = mac802154_header_create, | |
443 | .parse = mac802154_header_parse, | |
444 | }; | |
445 | ||
446 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 447 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 448 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 449 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 450 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
451 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
452 | }; | |
453 | ||
b9ff77e5 | 454 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 455 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
456 | .ndo_stop = mac802154_slave_close, |
457 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
458 | }; | |
459 | ||
f30be4d5 PB |
460 | static void mac802154_wpan_free(struct net_device *dev) |
461 | { | |
59d19cd7 | 462 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 463 | |
036562f9 | 464 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
465 | |
466 | free_netdev(dev); | |
467 | } | |
468 | ||
d5ae67ba | 469 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 470 | { |
e57a8946 AA |
471 | dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN; |
472 | memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN); | |
32bad7e3 | 473 | |
474 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 475 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 476 | dev->mtu = IEEE802154_MTU; |
e937f583 | 477 | dev->tx_queue_len = 300; |
32bad7e3 | 478 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 479 | } |
32bad7e3 | 480 | |
d5ae67ba | 481 | static int |
944742a3 AA |
482 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, |
483 | enum nl802154_iftype type) | |
d5ae67ba | 484 | { |
863e88f2 | 485 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
d77b4852 | 486 | int ret; |
344f8c11 | 487 | u8 tmp; |
863e88f2 | 488 | |
d5ae67ba | 489 | /* set some type-dependent values */ |
190ac1ca | 490 | sdata->wpan_dev.iftype = type; |
32bad7e3 | 491 | |
344f8c11 AA |
492 | get_random_bytes(&tmp, sizeof(tmp)); |
493 | atomic_set(&wpan_dev->bsn, tmp); | |
494 | get_random_bytes(&tmp, sizeof(tmp)); | |
495 | atomic_set(&wpan_dev->dsn, tmp); | |
32bad7e3 | 496 | |
e462ded6 | 497 | /* defaults per 802.15.4-2011 */ |
5fb3f026 AA |
498 | wpan_dev->min_be = 3; |
499 | wpan_dev->max_be = 5; | |
500 | wpan_dev->csma_retries = 4; | |
036562f9 | 501 | /* for compatibility, actual default is 3 */ |
5fb3f026 | 502 | wpan_dev->frame_retries = -1; |
e462ded6 | 503 | |
863e88f2 AA |
504 | wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
505 | wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 506 | |
d5ae67ba | 507 | switch (type) { |
944742a3 | 508 | case NL802154_IFTYPE_NODE: |
b03c9ccc AA |
509 | ieee802154_be64_to_le64(&wpan_dev->extended_addr, |
510 | sdata->dev->dev_addr); | |
511 | ||
d5ae67ba AA |
512 | sdata->dev->header_ops = &mac802154_header_ops; |
513 | sdata->dev->destructor = mac802154_wpan_free; | |
514 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
515 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
863e88f2 | 516 | wpan_dev->promiscuous_mode = false; |
986a8abf | 517 | |
d5ae67ba | 518 | mutex_init(&sdata->sec_mtx); |
986a8abf | 519 | |
d5ae67ba | 520 | mac802154_llsec_init(&sdata->sec); |
d77b4852 AA |
521 | ret = mac802154_wpan_update_llsec(sdata->dev); |
522 | if (ret < 0) | |
523 | return ret; | |
524 | ||
d5ae67ba | 525 | break; |
944742a3 | 526 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba AA |
527 | sdata->dev->destructor = free_netdev; |
528 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
863e88f2 | 529 | wpan_dev->promiscuous_mode = true; |
d5ae67ba AA |
530 | break; |
531 | default: | |
532 | BUG(); | |
533 | } | |
986a8abf AA |
534 | |
535 | return 0; | |
536 | } | |
537 | ||
538 | struct net_device * | |
539 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
5b4a1039 VB |
540 | unsigned char name_assign_type, enum nl802154_iftype type, |
541 | __le64 extended_addr) | |
986a8abf | 542 | { |
d5ae67ba AA |
543 | struct net_device *ndev = NULL; |
544 | struct ieee802154_sub_if_data *sdata = NULL; | |
545 | int ret = -ENOMEM; | |
546 | ||
547 | ASSERT_RTNL(); | |
548 | ||
ed65963b | 549 | ndev = alloc_netdev(sizeof(*sdata), name, |
5b4a1039 | 550 | name_assign_type, ieee802154_if_setup); |
d5ae67ba AA |
551 | if (!ndev) |
552 | return ERR_PTR(-ENOMEM); | |
553 | ||
554 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
555 | ||
556 | ret = dev_alloc_name(ndev, ndev->name); | |
557 | if (ret < 0) | |
558 | goto err; | |
986a8abf | 559 | |
0e57547e AA |
560 | ieee802154_le64_to_be64(ndev->perm_addr, |
561 | &local->hw.phy->perm_extended_addr); | |
986a8abf | 562 | switch (type) { |
944742a3 | 563 | case NL802154_IFTYPE_NODE: |
d5ae67ba | 564 | ndev->type = ARPHRD_IEEE802154; |
daf4e2c8 | 565 | if (ieee802154_is_valid_extended_unicast_addr(extended_addr)) |
0e57547e AA |
566 | ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr); |
567 | else | |
568 | memcpy(ndev->dev_addr, ndev->perm_addr, | |
569 | IEEE802154_EXTENDED_ADDR_LEN); | |
986a8abf | 570 | break; |
944742a3 | 571 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba | 572 | ndev->type = ARPHRD_IEEE802154_MONITOR; |
986a8abf | 573 | break; |
d5ae67ba AA |
574 | default: |
575 | ret = -EINVAL; | |
576 | goto err; | |
986a8abf | 577 | } |
d5ae67ba AA |
578 | |
579 | /* TODO check this */ | |
580 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
581 | sdata = netdev_priv(ndev); | |
582 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
583 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
584 | sdata->dev = ndev; | |
585 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
586 | sdata->local = local; | |
587 | ||
588 | /* setup type-dependent data */ | |
589 | ret = ieee802154_setup_sdata(sdata, type); | |
590 | if (ret) | |
986a8abf AA |
591 | goto err; |
592 | ||
473f3766 VB |
593 | ret = register_netdevice(ndev); |
594 | if (ret < 0) | |
595 | goto err; | |
d5ae67ba AA |
596 | |
597 | mutex_lock(&local->iflist_mtx); | |
598 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
599 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 600 | |
d5ae67ba | 601 | return ndev; |
986a8abf | 602 | |
986a8abf | 603 | err: |
d5ae67ba AA |
604 | free_netdev(ndev); |
605 | return ERR_PTR(ret); | |
986a8abf AA |
606 | } |
607 | ||
b210b187 AA |
608 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
609 | { | |
610 | ASSERT_RTNL(); | |
611 | ||
612 | mutex_lock(&sdata->local->iflist_mtx); | |
613 | list_del_rcu(&sdata->list); | |
614 | mutex_unlock(&sdata->local->iflist_mtx); | |
615 | ||
616 | synchronize_rcu(); | |
617 | unregister_netdevice(sdata->dev); | |
618 | } | |
592dfbfc AA |
619 | |
620 | void ieee802154_remove_interfaces(struct ieee802154_local *local) | |
621 | { | |
d14e1c71 | 622 | struct ieee802154_sub_if_data *sdata, *tmp; |
592dfbfc | 623 | |
2789e629 | 624 | mutex_lock(&local->iflist_mtx); |
d14e1c71 | 625 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
592dfbfc | 626 | list_del(&sdata->list); |
592dfbfc AA |
627 | |
628 | unregister_netdevice(sdata->dev); | |
629 | } | |
2789e629 | 630 | mutex_unlock(&local->iflist_mtx); |
592dfbfc | 631 | } |
be4fd8e5 AA |
632 | |
633 | static int netdev_notify(struct notifier_block *nb, | |
634 | unsigned long state, void *ptr) | |
635 | { | |
636 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
637 | struct ieee802154_sub_if_data *sdata; | |
638 | ||
639 | if (state != NETDEV_CHANGENAME) | |
640 | return NOTIFY_DONE; | |
641 | ||
642 | if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy) | |
643 | return NOTIFY_DONE; | |
644 | ||
645 | if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid) | |
646 | return NOTIFY_DONE; | |
647 | ||
648 | sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
649 | memcpy(sdata->name, dev->name, IFNAMSIZ); | |
650 | ||
651 | return NOTIFY_OK; | |
652 | } | |
653 | ||
654 | static struct notifier_block mac802154_netdev_notifier = { | |
655 | .notifier_call = netdev_notify, | |
656 | }; | |
657 | ||
658 | int ieee802154_iface_init(void) | |
659 | { | |
660 | return register_netdevice_notifier(&mac802154_netdev_notifier); | |
661 | } | |
662 | ||
663 | void ieee802154_iface_exit(void) | |
664 | { | |
665 | unregister_netdevice_notifier(&mac802154_netdev_notifier); | |
666 | } |