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 | ||
4a669f7d | 65 | rtnl_lock(); |
32bad7e3 | 66 | |
67 | switch (cmd) { | |
68 | case SIOCGIFADDR: | |
b70ab2e8 PB |
69 | { |
70 | u16 pan_id, short_addr; | |
71 | ||
863e88f2 AA |
72 | pan_id = le16_to_cpu(wpan_dev->pan_id); |
73 | short_addr = le16_to_cpu(wpan_dev->short_addr); | |
b70ab2e8 PB |
74 | if (pan_id == IEEE802154_PANID_BROADCAST || |
75 | short_addr == IEEE802154_ADDR_BROADCAST) { | |
32bad7e3 | 76 | err = -EADDRNOTAVAIL; |
77 | break; | |
78 | } | |
79 | ||
80 | sa->family = AF_IEEE802154; | |
81 | sa->addr.addr_type = IEEE802154_ADDR_SHORT; | |
b70ab2e8 PB |
82 | sa->addr.pan_id = pan_id; |
83 | sa->addr.short_addr = short_addr; | |
32bad7e3 | 84 | |
85 | err = 0; | |
86 | break; | |
b70ab2e8 | 87 | } |
32bad7e3 | 88 | case SIOCSIFADDR: |
f7cb96f1 | 89 | if (netif_running(dev)) { |
4a669f7d | 90 | rtnl_unlock(); |
f7cb96f1 AA |
91 | return -EBUSY; |
92 | } | |
93 | ||
32bad7e3 | 94 | dev_warn(&dev->dev, |
9b13494c | 95 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n"); |
32bad7e3 | 96 | if (sa->family != AF_IEEE802154 || |
97 | sa->addr.addr_type != IEEE802154_ADDR_SHORT || | |
98 | sa->addr.pan_id == IEEE802154_PANID_BROADCAST || | |
99 | sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || | |
100 | sa->addr.short_addr == IEEE802154_ADDR_UNDEF) { | |
101 | err = -EINVAL; | |
102 | break; | |
103 | } | |
104 | ||
863e88f2 AA |
105 | wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id); |
106 | wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr); | |
32bad7e3 | 107 | |
9b0bb4a8 | 108 | err = mac802154_wpan_update_llsec(dev); |
32bad7e3 | 109 | break; |
110 | } | |
111 | ||
4a669f7d | 112 | rtnl_unlock(); |
32bad7e3 | 113 | return err; |
114 | } | |
115 | ||
116 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
117 | { | |
776e59de | 118 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
32bad7e3 | 119 | struct sockaddr *addr = p; |
ea7053c1 | 120 | __le64 extended_addr; |
32bad7e3 | 121 | |
122 | if (netif_running(dev)) | |
123 | return -EBUSY; | |
124 | ||
705cbbbe | 125 | ieee802154_be64_to_le64(&extended_addr, addr->sa_data); |
ea7053c1 AA |
126 | if (!ieee802154_is_valid_extended_addr(extended_addr)) |
127 | return -EINVAL; | |
128 | ||
32bad7e3 | 129 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
863e88f2 | 130 | sdata->wpan_dev.extended_addr = extended_addr; |
776e59de | 131 | |
9b0bb4a8 | 132 | return mac802154_wpan_update_llsec(dev); |
32bad7e3 | 133 | } |
134 | ||
19ec690a AA |
135 | static int mac802154_slave_open(struct net_device *dev) |
136 | { | |
137 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
19ec690a AA |
138 | struct ieee802154_local *local = sdata->local; |
139 | int res = 0; | |
140 | ||
141 | ASSERT_RTNL(); | |
142 | ||
0ea3da64 | 143 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 144 | |
74457641 | 145 | if (!local->open_count) { |
59cb300f | 146 | res = drv_start(local); |
19ec690a AA |
147 | WARN_ON(res); |
148 | if (res) | |
149 | goto err; | |
150 | } | |
151 | ||
74457641 | 152 | local->open_count++; |
19ec690a AA |
153 | netif_start_queue(dev); |
154 | return 0; | |
155 | err: | |
0ea3da64 AA |
156 | /* might already be clear but that doesn't matter */ |
157 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
158 | |
159 | return res; | |
160 | } | |
161 | ||
bd37a78d AA |
162 | static int |
163 | ieee802154_check_mac_settings(struct ieee802154_local *local, | |
164 | struct wpan_dev *wpan_dev, | |
165 | struct wpan_dev *nwpan_dev) | |
166 | { | |
167 | ASSERT_RTNL(); | |
168 | ||
169 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { | |
170 | if (wpan_dev->promiscuous_mode != nwpan_dev->promiscuous_mode) | |
171 | return -EBUSY; | |
172 | } | |
173 | ||
174 | if (local->hw.flags & IEEE802154_HW_AFILT) { | |
8bf9538a AA |
175 | if (wpan_dev->pan_id != nwpan_dev->pan_id || |
176 | wpan_dev->short_addr != nwpan_dev->short_addr || | |
177 | wpan_dev->extended_addr != nwpan_dev->extended_addr) | |
bd37a78d AA |
178 | return -EBUSY; |
179 | } | |
180 | ||
181 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { | |
8bf9538a AA |
182 | if (wpan_dev->min_be != nwpan_dev->min_be || |
183 | wpan_dev->max_be != nwpan_dev->max_be || | |
184 | wpan_dev->csma_retries != nwpan_dev->csma_retries) | |
bd37a78d AA |
185 | return -EBUSY; |
186 | } | |
187 | ||
188 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { | |
189 | if (wpan_dev->frame_retries != nwpan_dev->frame_retries) | |
190 | return -EBUSY; | |
191 | } | |
192 | ||
193 | if (local->hw.flags & IEEE802154_HW_LBT) { | |
194 | if (wpan_dev->lbt != nwpan_dev->lbt) | |
195 | return -EBUSY; | |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static int | |
202 | ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata, | |
203 | enum nl802154_iftype iftype) | |
204 | { | |
205 | struct ieee802154_local *local = sdata->local; | |
206 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; | |
207 | struct ieee802154_sub_if_data *nsdata; | |
208 | ||
209 | /* we hold the RTNL here so can safely walk the list */ | |
210 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
211 | if (nsdata != sdata && ieee802154_sdata_running(nsdata)) { | |
212 | int ret; | |
213 | ||
cd1c5665 AA |
214 | /* TODO currently we don't support multiple node types |
215 | * we need to run skb_clone at rx path. Check if there | |
216 | * exist really an use case if we need to support | |
217 | * multiple node types at the same time. | |
218 | */ | |
219 | if (sdata->vif.type == NL802154_IFTYPE_NODE && | |
220 | nsdata->vif.type == NL802154_IFTYPE_NODE) | |
221 | return -EBUSY; | |
222 | ||
bd37a78d AA |
223 | /* check all phy mac sublayer settings are the same. |
224 | * We have only one phy, different values makes trouble. | |
225 | */ | |
226 | ret = ieee802154_check_mac_settings(local, wpan_dev, | |
227 | &nsdata->wpan_dev); | |
228 | if (ret < 0) | |
229 | return ret; | |
230 | } | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
6ef0023a | 236 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
237 | { |
238 | int rc; | |
59d19cd7 | 239 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
59cb300f | 240 | struct ieee802154_local *local = sdata->local; |
863e88f2 | 241 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
e462ded6 | 242 | |
bd37a78d AA |
243 | rc = ieee802154_check_concurrent_iface(sdata, sdata->vif.type); |
244 | if (rc < 0) | |
245 | return rc; | |
246 | ||
e462ded6 PB |
247 | rc = mac802154_slave_open(dev); |
248 | if (rc < 0) | |
249 | return rc; | |
250 | ||
38130c31 | 251 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { |
863e88f2 AA |
252 | rc = drv_set_promiscuous_mode(local, |
253 | wpan_dev->promiscuous_mode); | |
38130c31 AA |
254 | if (rc < 0) |
255 | goto out; | |
256 | } | |
257 | ||
776e59de | 258 | if (local->hw.flags & IEEE802154_HW_AFILT) { |
863e88f2 | 259 | rc = drv_set_pan_id(local, wpan_dev->pan_id); |
50c79075 AA |
260 | if (rc < 0) |
261 | goto out; | |
262 | ||
863e88f2 | 263 | rc = drv_set_extended_addr(local, wpan_dev->extended_addr); |
776e59de AA |
264 | if (rc < 0) |
265 | goto out; | |
78b4bad1 | 266 | |
863e88f2 | 267 | rc = drv_set_short_addr(local, wpan_dev->short_addr); |
78b4bad1 AA |
268 | if (rc < 0) |
269 | goto out; | |
776e59de AA |
270 | } |
271 | ||
a543c598 | 272 | if (local->hw.flags & IEEE802154_HW_LBT) { |
5fb3f026 | 273 | rc = drv_set_lbt_mode(local, wpan_dev->lbt); |
e462ded6 PB |
274 | if (rc < 0) |
275 | goto out; | |
276 | } | |
277 | ||
a543c598 | 278 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { |
5fb3f026 AA |
279 | rc = drv_set_csma_params(local, wpan_dev->min_be, |
280 | wpan_dev->max_be, | |
281 | wpan_dev->csma_retries); | |
e462ded6 PB |
282 | if (rc < 0) |
283 | goto out; | |
284 | } | |
285 | ||
a543c598 | 286 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { |
5fb3f026 | 287 | rc = drv_set_max_frame_retries(local, wpan_dev->frame_retries); |
e462ded6 PB |
288 | if (rc < 0) |
289 | goto out; | |
290 | } | |
291 | ||
e462ded6 | 292 | out: |
e462ded6 PB |
293 | return rc; |
294 | } | |
295 | ||
19ec690a AA |
296 | static int mac802154_slave_close(struct net_device *dev) |
297 | { | |
298 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
299 | struct ieee802154_local *local = sdata->local; | |
300 | ||
301 | ASSERT_RTNL(); | |
302 | ||
61f2dcba AA |
303 | hrtimer_cancel(&local->ifs_timer); |
304 | ||
19ec690a | 305 | netif_stop_queue(dev); |
74457641 | 306 | local->open_count--; |
19ec690a | 307 | |
0ea3da64 | 308 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 309 | |
74457641 | 310 | if (!local->open_count) |
59cb300f | 311 | drv_stop(local); |
19ec690a AA |
312 | |
313 | return 0; | |
314 | } | |
315 | ||
036562f9 | 316 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
317 | struct ieee802154_hdr *hdr, |
318 | const struct ieee802154_mac_cb *cb) | |
319 | { | |
320 | struct ieee802154_llsec_params params; | |
321 | u8 level; | |
322 | ||
036562f9 | 323 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
324 | |
325 | if (!params.enabled && cb->secen_override && cb->secen) | |
326 | return -EINVAL; | |
327 | if (!params.enabled || | |
328 | (cb->secen_override && !cb->secen) || | |
329 | !params.out_level) | |
330 | return 0; | |
331 | if (cb->seclevel_override && !cb->seclevel) | |
332 | return -EINVAL; | |
333 | ||
334 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
335 | ||
336 | hdr->fc.security_enabled = 1; | |
337 | hdr->sec.level = level; | |
338 | hdr->sec.key_id_mode = params.out_key.mode; | |
339 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
340 | hdr->sec.short_src = params.out_key.short_source; | |
341 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
342 | hdr->sec.extended_src = params.out_key.extended_source; | |
343 | hdr->sec.key_id = params.out_key.id; | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
32bad7e3 | 348 | static int mac802154_header_create(struct sk_buff *skb, |
349 | struct net_device *dev, | |
350 | unsigned short type, | |
e6278d92 PB |
351 | const void *daddr, |
352 | const void *saddr, | |
32bad7e3 | 353 | unsigned len) |
354 | { | |
e6278d92 | 355 | struct ieee802154_hdr hdr; |
59d19cd7 | 356 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 357 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32edc40a | 358 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 359 | int hlen; |
32bad7e3 | 360 | |
361 | if (!daddr) | |
362 | return -EINVAL; | |
363 | ||
e6278d92 | 364 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
365 | hdr.fc.type = cb->type; |
366 | hdr.fc.security_enabled = cb->secen; | |
367 | hdr.fc.ack_request = cb->ackreq; | |
344f8c11 | 368 | hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF; |
32bad7e3 | 369 | |
036562f9 | 370 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
371 | return -EINVAL; |
372 | ||
32bad7e3 | 373 | if (!saddr) { |
863e88f2 AA |
374 | if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
375 | wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
376 | wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 377 | hdr.source.mode = IEEE802154_ADDR_LONG; |
863e88f2 | 378 | hdr.source.extended_addr = wpan_dev->extended_addr; |
32bad7e3 | 379 | } else { |
e6278d92 | 380 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
863e88f2 | 381 | hdr.source.short_addr = wpan_dev->short_addr; |
32bad7e3 | 382 | } |
383 | ||
863e88f2 | 384 | hdr.source.pan_id = wpan_dev->pan_id; |
e6278d92 PB |
385 | } else { |
386 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 387 | } |
388 | ||
e6278d92 | 389 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 390 | |
e6278d92 PB |
391 | hlen = ieee802154_hdr_push(skb, &hdr); |
392 | if (hlen < 0) | |
393 | return -EINVAL; | |
32bad7e3 | 394 | |
3e69162e | 395 | skb_reset_mac_header(skb); |
e6278d92 | 396 | skb->mac_len = hlen; |
32bad7e3 | 397 | |
8c84296f | 398 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
399 | return -EMSGSIZE; |
400 | ||
e6278d92 | 401 | return hlen; |
32bad7e3 | 402 | } |
403 | ||
404 | static int | |
405 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
406 | { | |
e6278d92 PB |
407 | struct ieee802154_hdr hdr; |
408 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 409 | |
e6278d92 PB |
410 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
411 | pr_debug("malformed packet\n"); | |
412 | return 0; | |
32bad7e3 | 413 | } |
414 | ||
e6278d92 PB |
415 | *addr = hdr.source; |
416 | return sizeof(*addr); | |
32bad7e3 | 417 | } |
418 | ||
32bad7e3 | 419 | static struct header_ops mac802154_header_ops = { |
420 | .create = mac802154_header_create, | |
421 | .parse = mac802154_header_parse, | |
422 | }; | |
423 | ||
424 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 425 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 426 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 427 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 428 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
429 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
430 | }; | |
431 | ||
b9ff77e5 | 432 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 433 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
434 | .ndo_stop = mac802154_slave_close, |
435 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
436 | }; | |
437 | ||
f30be4d5 PB |
438 | static void mac802154_wpan_free(struct net_device *dev) |
439 | { | |
59d19cd7 | 440 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 441 | |
036562f9 | 442 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
443 | |
444 | free_netdev(dev); | |
445 | } | |
446 | ||
d5ae67ba | 447 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 448 | { |
e57a8946 AA |
449 | dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN; |
450 | memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN); | |
32bad7e3 | 451 | |
452 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 453 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 454 | dev->mtu = IEEE802154_MTU; |
e937f583 | 455 | dev->tx_queue_len = 300; |
32bad7e3 | 456 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 457 | } |
32bad7e3 | 458 | |
d5ae67ba | 459 | static int |
944742a3 AA |
460 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, |
461 | enum nl802154_iftype type) | |
d5ae67ba | 462 | { |
863e88f2 | 463 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
344f8c11 | 464 | u8 tmp; |
863e88f2 | 465 | |
d5ae67ba | 466 | /* set some type-dependent values */ |
7c118c1a | 467 | sdata->vif.type = type; |
190ac1ca | 468 | sdata->wpan_dev.iftype = type; |
32bad7e3 | 469 | |
344f8c11 AA |
470 | get_random_bytes(&tmp, sizeof(tmp)); |
471 | atomic_set(&wpan_dev->bsn, tmp); | |
472 | get_random_bytes(&tmp, sizeof(tmp)); | |
473 | atomic_set(&wpan_dev->dsn, tmp); | |
32bad7e3 | 474 | |
e462ded6 | 475 | /* defaults per 802.15.4-2011 */ |
5fb3f026 AA |
476 | wpan_dev->min_be = 3; |
477 | wpan_dev->max_be = 5; | |
478 | wpan_dev->csma_retries = 4; | |
036562f9 | 479 | /* for compatibility, actual default is 3 */ |
5fb3f026 | 480 | wpan_dev->frame_retries = -1; |
e462ded6 | 481 | |
863e88f2 AA |
482 | wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
483 | wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 484 | |
d5ae67ba | 485 | switch (type) { |
944742a3 | 486 | case NL802154_IFTYPE_NODE: |
b03c9ccc AA |
487 | ieee802154_be64_to_le64(&wpan_dev->extended_addr, |
488 | sdata->dev->dev_addr); | |
489 | ||
d5ae67ba AA |
490 | sdata->dev->header_ops = &mac802154_header_ops; |
491 | sdata->dev->destructor = mac802154_wpan_free; | |
492 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
493 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
863e88f2 | 494 | wpan_dev->promiscuous_mode = false; |
986a8abf | 495 | |
d5ae67ba | 496 | mutex_init(&sdata->sec_mtx); |
986a8abf | 497 | |
d5ae67ba AA |
498 | mac802154_llsec_init(&sdata->sec); |
499 | break; | |
944742a3 | 500 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba AA |
501 | sdata->dev->destructor = free_netdev; |
502 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
863e88f2 | 503 | wpan_dev->promiscuous_mode = true; |
d5ae67ba AA |
504 | break; |
505 | default: | |
506 | BUG(); | |
507 | } | |
986a8abf AA |
508 | |
509 | return 0; | |
510 | } | |
511 | ||
512 | struct net_device * | |
513 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
5b4a1039 VB |
514 | unsigned char name_assign_type, enum nl802154_iftype type, |
515 | __le64 extended_addr) | |
986a8abf | 516 | { |
d5ae67ba AA |
517 | struct net_device *ndev = NULL; |
518 | struct ieee802154_sub_if_data *sdata = NULL; | |
519 | int ret = -ENOMEM; | |
520 | ||
521 | ASSERT_RTNL(); | |
522 | ||
7c118c1a | 523 | ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name, |
5b4a1039 | 524 | name_assign_type, ieee802154_if_setup); |
d5ae67ba AA |
525 | if (!ndev) |
526 | return ERR_PTR(-ENOMEM); | |
527 | ||
528 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
529 | ||
530 | ret = dev_alloc_name(ndev, ndev->name); | |
531 | if (ret < 0) | |
532 | goto err; | |
986a8abf | 533 | |
0e57547e AA |
534 | ieee802154_le64_to_be64(ndev->perm_addr, |
535 | &local->hw.phy->perm_extended_addr); | |
986a8abf | 536 | switch (type) { |
944742a3 | 537 | case NL802154_IFTYPE_NODE: |
d5ae67ba | 538 | ndev->type = ARPHRD_IEEE802154; |
0e57547e AA |
539 | if (ieee802154_is_valid_extended_addr(extended_addr)) |
540 | ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr); | |
541 | else | |
542 | memcpy(ndev->dev_addr, ndev->perm_addr, | |
543 | IEEE802154_EXTENDED_ADDR_LEN); | |
986a8abf | 544 | break; |
944742a3 | 545 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba | 546 | ndev->type = ARPHRD_IEEE802154_MONITOR; |
986a8abf | 547 | break; |
d5ae67ba AA |
548 | default: |
549 | ret = -EINVAL; | |
550 | goto err; | |
986a8abf | 551 | } |
d5ae67ba AA |
552 | |
553 | /* TODO check this */ | |
554 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
555 | sdata = netdev_priv(ndev); | |
556 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
557 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
558 | sdata->dev = ndev; | |
559 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
560 | sdata->local = local; | |
561 | ||
562 | /* setup type-dependent data */ | |
563 | ret = ieee802154_setup_sdata(sdata, type); | |
564 | if (ret) | |
986a8abf AA |
565 | goto err; |
566 | ||
473f3766 VB |
567 | ret = register_netdevice(ndev); |
568 | if (ret < 0) | |
569 | goto err; | |
d5ae67ba AA |
570 | |
571 | mutex_lock(&local->iflist_mtx); | |
572 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
573 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 574 | |
d5ae67ba | 575 | return ndev; |
986a8abf | 576 | |
986a8abf | 577 | err: |
d5ae67ba AA |
578 | free_netdev(ndev); |
579 | return ERR_PTR(ret); | |
986a8abf AA |
580 | } |
581 | ||
b210b187 AA |
582 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
583 | { | |
584 | ASSERT_RTNL(); | |
585 | ||
586 | mutex_lock(&sdata->local->iflist_mtx); | |
587 | list_del_rcu(&sdata->list); | |
588 | mutex_unlock(&sdata->local->iflist_mtx); | |
589 | ||
590 | synchronize_rcu(); | |
591 | unregister_netdevice(sdata->dev); | |
592 | } | |
592dfbfc AA |
593 | |
594 | void ieee802154_remove_interfaces(struct ieee802154_local *local) | |
595 | { | |
d14e1c71 | 596 | struct ieee802154_sub_if_data *sdata, *tmp; |
592dfbfc | 597 | |
2789e629 | 598 | mutex_lock(&local->iflist_mtx); |
d14e1c71 | 599 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
592dfbfc | 600 | list_del(&sdata->list); |
592dfbfc AA |
601 | |
602 | unregister_netdevice(sdata->dev); | |
603 | } | |
2789e629 | 604 | mutex_unlock(&local->iflist_mtx); |
592dfbfc | 605 | } |
be4fd8e5 AA |
606 | |
607 | static int netdev_notify(struct notifier_block *nb, | |
608 | unsigned long state, void *ptr) | |
609 | { | |
610 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
611 | struct ieee802154_sub_if_data *sdata; | |
612 | ||
613 | if (state != NETDEV_CHANGENAME) | |
614 | return NOTIFY_DONE; | |
615 | ||
616 | if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy) | |
617 | return NOTIFY_DONE; | |
618 | ||
619 | if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid) | |
620 | return NOTIFY_DONE; | |
621 | ||
622 | sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
623 | memcpy(sdata->name, dev->name, IFNAMSIZ); | |
624 | ||
625 | return NOTIFY_OK; | |
626 | } | |
627 | ||
628 | static struct notifier_block mac802154_netdev_notifier = { | |
629 | .notifier_call = netdev_notify, | |
630 | }; | |
631 | ||
632 | int ieee802154_iface_init(void) | |
633 | { | |
634 | return register_netdevice_notifier(&mac802154_netdev_notifier); | |
635 | } | |
636 | ||
637 | void ieee802154_iface_exit(void) | |
638 | { | |
639 | unregister_netdevice_notifier(&mac802154_netdev_notifier); | |
640 | } |