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 | |
9b0bb4a8 PB |
33 | static int mac802154_wpan_update_llsec(struct net_device *dev) |
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 | ||
705cbbbe | 128 | ieee802154_be64_to_le64(&extended_addr, addr->sa_data); |
daf4e2c8 | 129 | if (!ieee802154_is_valid_extended_unicast_addr(extended_addr)) |
ea7053c1 AA |
130 | return -EINVAL; |
131 | ||
32bad7e3 | 132 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
863e88f2 | 133 | sdata->wpan_dev.extended_addr = extended_addr; |
776e59de | 134 | |
9b0bb4a8 | 135 | return mac802154_wpan_update_llsec(dev); |
32bad7e3 | 136 | } |
137 | ||
95c0aa15 AA |
138 | static int ieee802154_setup_hw(struct ieee802154_sub_if_data *sdata) |
139 | { | |
140 | struct ieee802154_local *local = sdata->local; | |
141 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; | |
142 | int ret; | |
143 | ||
144 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { | |
145 | ret = drv_set_promiscuous_mode(local, | |
146 | wpan_dev->promiscuous_mode); | |
147 | if (ret < 0) | |
148 | return ret; | |
149 | } | |
150 | ||
151 | if (local->hw.flags & IEEE802154_HW_AFILT) { | |
152 | ret = drv_set_pan_id(local, wpan_dev->pan_id); | |
153 | if (ret < 0) | |
154 | return ret; | |
155 | ||
156 | ret = drv_set_extended_addr(local, wpan_dev->extended_addr); | |
157 | if (ret < 0) | |
158 | return ret; | |
159 | ||
160 | ret = drv_set_short_addr(local, wpan_dev->short_addr); | |
161 | if (ret < 0) | |
162 | return ret; | |
163 | } | |
164 | ||
165 | if (local->hw.flags & IEEE802154_HW_LBT) { | |
166 | ret = drv_set_lbt_mode(local, wpan_dev->lbt); | |
167 | if (ret < 0) | |
168 | return ret; | |
169 | } | |
170 | ||
171 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { | |
172 | ret = drv_set_csma_params(local, wpan_dev->min_be, | |
173 | wpan_dev->max_be, | |
174 | wpan_dev->csma_retries); | |
175 | if (ret < 0) | |
176 | return ret; | |
177 | } | |
178 | ||
179 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { | |
180 | ret = drv_set_max_frame_retries(local, wpan_dev->frame_retries); | |
181 | if (ret < 0) | |
182 | return ret; | |
183 | } | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
19ec690a AA |
188 | static int mac802154_slave_open(struct net_device *dev) |
189 | { | |
190 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
19ec690a | 191 | struct ieee802154_local *local = sdata->local; |
5c698e8b | 192 | int res; |
19ec690a AA |
193 | |
194 | ASSERT_RTNL(); | |
195 | ||
0ea3da64 | 196 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 197 | |
74457641 | 198 | if (!local->open_count) { |
95c0aa15 AA |
199 | res = ieee802154_setup_hw(sdata); |
200 | if (res) | |
201 | goto err; | |
202 | ||
59cb300f | 203 | res = drv_start(local); |
19ec690a AA |
204 | if (res) |
205 | goto err; | |
206 | } | |
207 | ||
74457641 | 208 | local->open_count++; |
19ec690a AA |
209 | netif_start_queue(dev); |
210 | return 0; | |
211 | err: | |
0ea3da64 AA |
212 | /* might already be clear but that doesn't matter */ |
213 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
214 | |
215 | return res; | |
216 | } | |
217 | ||
bd37a78d AA |
218 | static int |
219 | ieee802154_check_mac_settings(struct ieee802154_local *local, | |
220 | struct wpan_dev *wpan_dev, | |
221 | struct wpan_dev *nwpan_dev) | |
222 | { | |
223 | ASSERT_RTNL(); | |
224 | ||
225 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { | |
226 | if (wpan_dev->promiscuous_mode != nwpan_dev->promiscuous_mode) | |
227 | return -EBUSY; | |
228 | } | |
229 | ||
230 | if (local->hw.flags & IEEE802154_HW_AFILT) { | |
8bf9538a AA |
231 | if (wpan_dev->pan_id != nwpan_dev->pan_id || |
232 | wpan_dev->short_addr != nwpan_dev->short_addr || | |
233 | wpan_dev->extended_addr != nwpan_dev->extended_addr) | |
bd37a78d AA |
234 | return -EBUSY; |
235 | } | |
236 | ||
237 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { | |
8bf9538a AA |
238 | if (wpan_dev->min_be != nwpan_dev->min_be || |
239 | wpan_dev->max_be != nwpan_dev->max_be || | |
240 | wpan_dev->csma_retries != nwpan_dev->csma_retries) | |
bd37a78d AA |
241 | return -EBUSY; |
242 | } | |
243 | ||
244 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { | |
245 | if (wpan_dev->frame_retries != nwpan_dev->frame_retries) | |
246 | return -EBUSY; | |
247 | } | |
248 | ||
249 | if (local->hw.flags & IEEE802154_HW_LBT) { | |
250 | if (wpan_dev->lbt != nwpan_dev->lbt) | |
251 | return -EBUSY; | |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | static int | |
258 | ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata, | |
259 | enum nl802154_iftype iftype) | |
260 | { | |
261 | struct ieee802154_local *local = sdata->local; | |
262 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; | |
263 | struct ieee802154_sub_if_data *nsdata; | |
264 | ||
265 | /* we hold the RTNL here so can safely walk the list */ | |
266 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
267 | if (nsdata != sdata && ieee802154_sdata_running(nsdata)) { | |
268 | int ret; | |
269 | ||
cd1c5665 AA |
270 | /* TODO currently we don't support multiple node types |
271 | * we need to run skb_clone at rx path. Check if there | |
272 | * exist really an use case if we need to support | |
273 | * multiple node types at the same time. | |
274 | */ | |
ed65963b AA |
275 | if (wpan_dev->iftype == NL802154_IFTYPE_NODE && |
276 | nsdata->wpan_dev.iftype == NL802154_IFTYPE_NODE) | |
cd1c5665 AA |
277 | return -EBUSY; |
278 | ||
bd37a78d AA |
279 | /* check all phy mac sublayer settings are the same. |
280 | * We have only one phy, different values makes trouble. | |
281 | */ | |
282 | ret = ieee802154_check_mac_settings(local, wpan_dev, | |
283 | &nsdata->wpan_dev); | |
284 | if (ret < 0) | |
285 | return ret; | |
286 | } | |
287 | } | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
6ef0023a | 292 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
293 | { |
294 | int rc; | |
59d19cd7 | 295 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 296 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
e462ded6 | 297 | |
ed65963b | 298 | rc = ieee802154_check_concurrent_iface(sdata, wpan_dev->iftype); |
bd37a78d AA |
299 | if (rc < 0) |
300 | return rc; | |
301 | ||
95c0aa15 | 302 | return mac802154_slave_open(dev); |
e462ded6 PB |
303 | } |
304 | ||
19ec690a AA |
305 | static int mac802154_slave_close(struct net_device *dev) |
306 | { | |
307 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
308 | struct ieee802154_local *local = sdata->local; | |
309 | ||
310 | ASSERT_RTNL(); | |
311 | ||
312 | netif_stop_queue(dev); | |
74457641 | 313 | local->open_count--; |
19ec690a | 314 | |
0ea3da64 | 315 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 316 | |
b4ee1944 | 317 | if (!local->open_count) { |
ed2e627c | 318 | flush_workqueue(local->workqueue); |
b4ee1944 | 319 | hrtimer_cancel(&local->ifs_timer); |
59cb300f | 320 | drv_stop(local); |
b4ee1944 | 321 | } |
19ec690a AA |
322 | |
323 | return 0; | |
324 | } | |
325 | ||
036562f9 | 326 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
327 | struct ieee802154_hdr *hdr, |
328 | const struct ieee802154_mac_cb *cb) | |
329 | { | |
330 | struct ieee802154_llsec_params params; | |
331 | u8 level; | |
332 | ||
036562f9 | 333 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
334 | |
335 | if (!params.enabled && cb->secen_override && cb->secen) | |
336 | return -EINVAL; | |
337 | if (!params.enabled || | |
338 | (cb->secen_override && !cb->secen) || | |
339 | !params.out_level) | |
340 | return 0; | |
341 | if (cb->seclevel_override && !cb->seclevel) | |
342 | return -EINVAL; | |
343 | ||
344 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
345 | ||
346 | hdr->fc.security_enabled = 1; | |
347 | hdr->sec.level = level; | |
348 | hdr->sec.key_id_mode = params.out_key.mode; | |
349 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
350 | hdr->sec.short_src = params.out_key.short_source; | |
351 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
352 | hdr->sec.extended_src = params.out_key.extended_source; | |
353 | hdr->sec.key_id = params.out_key.id; | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
32bad7e3 | 358 | static int mac802154_header_create(struct sk_buff *skb, |
359 | struct net_device *dev, | |
360 | unsigned short type, | |
e6278d92 PB |
361 | const void *daddr, |
362 | const void *saddr, | |
32bad7e3 | 363 | unsigned len) |
364 | { | |
e6278d92 | 365 | struct ieee802154_hdr hdr; |
59d19cd7 | 366 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 367 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32edc40a | 368 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 369 | int hlen; |
32bad7e3 | 370 | |
371 | if (!daddr) | |
372 | return -EINVAL; | |
373 | ||
e6278d92 | 374 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
375 | hdr.fc.type = cb->type; |
376 | hdr.fc.security_enabled = cb->secen; | |
377 | hdr.fc.ack_request = cb->ackreq; | |
344f8c11 | 378 | hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF; |
32bad7e3 | 379 | |
036562f9 | 380 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
381 | return -EINVAL; |
382 | ||
32bad7e3 | 383 | if (!saddr) { |
863e88f2 AA |
384 | if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
385 | wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
386 | wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 387 | hdr.source.mode = IEEE802154_ADDR_LONG; |
863e88f2 | 388 | hdr.source.extended_addr = wpan_dev->extended_addr; |
32bad7e3 | 389 | } else { |
e6278d92 | 390 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
863e88f2 | 391 | hdr.source.short_addr = wpan_dev->short_addr; |
32bad7e3 | 392 | } |
393 | ||
863e88f2 | 394 | hdr.source.pan_id = wpan_dev->pan_id; |
e6278d92 PB |
395 | } else { |
396 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 397 | } |
398 | ||
e6278d92 | 399 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 400 | |
e6278d92 PB |
401 | hlen = ieee802154_hdr_push(skb, &hdr); |
402 | if (hlen < 0) | |
403 | return -EINVAL; | |
32bad7e3 | 404 | |
3e69162e | 405 | skb_reset_mac_header(skb); |
e6278d92 | 406 | skb->mac_len = hlen; |
32bad7e3 | 407 | |
8c84296f | 408 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
409 | return -EMSGSIZE; |
410 | ||
e6278d92 | 411 | return hlen; |
32bad7e3 | 412 | } |
413 | ||
414 | static int | |
415 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
416 | { | |
e6278d92 PB |
417 | struct ieee802154_hdr hdr; |
418 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 419 | |
e6278d92 PB |
420 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
421 | pr_debug("malformed packet\n"); | |
422 | return 0; | |
32bad7e3 | 423 | } |
424 | ||
e6278d92 PB |
425 | *addr = hdr.source; |
426 | return sizeof(*addr); | |
32bad7e3 | 427 | } |
428 | ||
32bad7e3 | 429 | static struct header_ops mac802154_header_ops = { |
430 | .create = mac802154_header_create, | |
431 | .parse = mac802154_header_parse, | |
432 | }; | |
433 | ||
434 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 435 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 436 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 437 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 438 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
439 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
440 | }; | |
441 | ||
b9ff77e5 | 442 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 443 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
444 | .ndo_stop = mac802154_slave_close, |
445 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
446 | }; | |
447 | ||
f30be4d5 PB |
448 | static void mac802154_wpan_free(struct net_device *dev) |
449 | { | |
59d19cd7 | 450 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 451 | |
036562f9 | 452 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
453 | |
454 | free_netdev(dev); | |
455 | } | |
456 | ||
d5ae67ba | 457 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 458 | { |
e57a8946 AA |
459 | dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN; |
460 | memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN); | |
32bad7e3 | 461 | |
462 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 463 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 464 | dev->mtu = IEEE802154_MTU; |
e937f583 | 465 | dev->tx_queue_len = 300; |
32bad7e3 | 466 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 467 | } |
32bad7e3 | 468 | |
d5ae67ba | 469 | static int |
944742a3 AA |
470 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, |
471 | enum nl802154_iftype type) | |
d5ae67ba | 472 | { |
863e88f2 | 473 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
344f8c11 | 474 | u8 tmp; |
863e88f2 | 475 | |
d5ae67ba | 476 | /* set some type-dependent values */ |
190ac1ca | 477 | sdata->wpan_dev.iftype = type; |
32bad7e3 | 478 | |
344f8c11 AA |
479 | get_random_bytes(&tmp, sizeof(tmp)); |
480 | atomic_set(&wpan_dev->bsn, tmp); | |
481 | get_random_bytes(&tmp, sizeof(tmp)); | |
482 | atomic_set(&wpan_dev->dsn, tmp); | |
32bad7e3 | 483 | |
e462ded6 | 484 | /* defaults per 802.15.4-2011 */ |
5fb3f026 AA |
485 | wpan_dev->min_be = 3; |
486 | wpan_dev->max_be = 5; | |
487 | wpan_dev->csma_retries = 4; | |
036562f9 | 488 | /* for compatibility, actual default is 3 */ |
5fb3f026 | 489 | wpan_dev->frame_retries = -1; |
e462ded6 | 490 | |
863e88f2 AA |
491 | wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
492 | wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 493 | |
d5ae67ba | 494 | switch (type) { |
944742a3 | 495 | case NL802154_IFTYPE_NODE: |
b03c9ccc AA |
496 | ieee802154_be64_to_le64(&wpan_dev->extended_addr, |
497 | sdata->dev->dev_addr); | |
498 | ||
d5ae67ba AA |
499 | sdata->dev->header_ops = &mac802154_header_ops; |
500 | sdata->dev->destructor = mac802154_wpan_free; | |
501 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
502 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
863e88f2 | 503 | wpan_dev->promiscuous_mode = false; |
986a8abf | 504 | |
d5ae67ba | 505 | mutex_init(&sdata->sec_mtx); |
986a8abf | 506 | |
d5ae67ba AA |
507 | mac802154_llsec_init(&sdata->sec); |
508 | break; | |
944742a3 | 509 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba AA |
510 | sdata->dev->destructor = free_netdev; |
511 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
863e88f2 | 512 | wpan_dev->promiscuous_mode = true; |
d5ae67ba AA |
513 | break; |
514 | default: | |
515 | BUG(); | |
516 | } | |
986a8abf AA |
517 | |
518 | return 0; | |
519 | } | |
520 | ||
521 | struct net_device * | |
522 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
5b4a1039 VB |
523 | unsigned char name_assign_type, enum nl802154_iftype type, |
524 | __le64 extended_addr) | |
986a8abf | 525 | { |
d5ae67ba AA |
526 | struct net_device *ndev = NULL; |
527 | struct ieee802154_sub_if_data *sdata = NULL; | |
528 | int ret = -ENOMEM; | |
529 | ||
530 | ASSERT_RTNL(); | |
531 | ||
ed65963b | 532 | ndev = alloc_netdev(sizeof(*sdata), name, |
5b4a1039 | 533 | name_assign_type, ieee802154_if_setup); |
d5ae67ba AA |
534 | if (!ndev) |
535 | return ERR_PTR(-ENOMEM); | |
536 | ||
537 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
538 | ||
539 | ret = dev_alloc_name(ndev, ndev->name); | |
540 | if (ret < 0) | |
541 | goto err; | |
986a8abf | 542 | |
0e57547e AA |
543 | ieee802154_le64_to_be64(ndev->perm_addr, |
544 | &local->hw.phy->perm_extended_addr); | |
986a8abf | 545 | switch (type) { |
944742a3 | 546 | case NL802154_IFTYPE_NODE: |
d5ae67ba | 547 | ndev->type = ARPHRD_IEEE802154; |
daf4e2c8 | 548 | if (ieee802154_is_valid_extended_unicast_addr(extended_addr)) |
0e57547e AA |
549 | ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr); |
550 | else | |
551 | memcpy(ndev->dev_addr, ndev->perm_addr, | |
552 | IEEE802154_EXTENDED_ADDR_LEN); | |
986a8abf | 553 | break; |
944742a3 | 554 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba | 555 | ndev->type = ARPHRD_IEEE802154_MONITOR; |
986a8abf | 556 | break; |
d5ae67ba AA |
557 | default: |
558 | ret = -EINVAL; | |
559 | goto err; | |
986a8abf | 560 | } |
d5ae67ba AA |
561 | |
562 | /* TODO check this */ | |
563 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
564 | sdata = netdev_priv(ndev); | |
565 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
566 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
567 | sdata->dev = ndev; | |
568 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
569 | sdata->local = local; | |
570 | ||
571 | /* setup type-dependent data */ | |
572 | ret = ieee802154_setup_sdata(sdata, type); | |
573 | if (ret) | |
986a8abf AA |
574 | goto err; |
575 | ||
473f3766 VB |
576 | ret = register_netdevice(ndev); |
577 | if (ret < 0) | |
578 | goto err; | |
d5ae67ba AA |
579 | |
580 | mutex_lock(&local->iflist_mtx); | |
581 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
582 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 583 | |
d5ae67ba | 584 | return ndev; |
986a8abf | 585 | |
986a8abf | 586 | err: |
d5ae67ba AA |
587 | free_netdev(ndev); |
588 | return ERR_PTR(ret); | |
986a8abf AA |
589 | } |
590 | ||
b210b187 AA |
591 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
592 | { | |
593 | ASSERT_RTNL(); | |
594 | ||
595 | mutex_lock(&sdata->local->iflist_mtx); | |
596 | list_del_rcu(&sdata->list); | |
597 | mutex_unlock(&sdata->local->iflist_mtx); | |
598 | ||
599 | synchronize_rcu(); | |
600 | unregister_netdevice(sdata->dev); | |
601 | } | |
592dfbfc AA |
602 | |
603 | void ieee802154_remove_interfaces(struct ieee802154_local *local) | |
604 | { | |
d14e1c71 | 605 | struct ieee802154_sub_if_data *sdata, *tmp; |
592dfbfc | 606 | |
2789e629 | 607 | mutex_lock(&local->iflist_mtx); |
d14e1c71 | 608 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
592dfbfc | 609 | list_del(&sdata->list); |
592dfbfc AA |
610 | |
611 | unregister_netdevice(sdata->dev); | |
612 | } | |
2789e629 | 613 | mutex_unlock(&local->iflist_mtx); |
592dfbfc | 614 | } |
be4fd8e5 AA |
615 | |
616 | static int netdev_notify(struct notifier_block *nb, | |
617 | unsigned long state, void *ptr) | |
618 | { | |
619 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
620 | struct ieee802154_sub_if_data *sdata; | |
621 | ||
622 | if (state != NETDEV_CHANGENAME) | |
623 | return NOTIFY_DONE; | |
624 | ||
625 | if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy) | |
626 | return NOTIFY_DONE; | |
627 | ||
628 | if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid) | |
629 | return NOTIFY_DONE; | |
630 | ||
631 | sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
632 | memcpy(sdata->name, dev->name, IFNAMSIZ); | |
633 | ||
634 | return NOTIFY_OK; | |
635 | } | |
636 | ||
637 | static struct notifier_block mac802154_netdev_notifier = { | |
638 | .notifier_call = netdev_notify, | |
639 | }; | |
640 | ||
641 | int ieee802154_iface_init(void) | |
642 | { | |
643 | return register_netdevice_notifier(&mac802154_netdev_notifier); | |
644 | } | |
645 | ||
646 | void ieee802154_iface_exit(void) | |
647 | { | |
648 | unregister_netdevice_notifier(&mac802154_netdev_notifier); | |
649 | } |