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 | ||
f7cb96f1 AA |
65 | ASSERT_RTNL(); |
66 | ||
036562f9 | 67 | spin_lock_bh(&sdata->mib_lock); |
32bad7e3 | 68 | |
69 | switch (cmd) { | |
70 | case SIOCGIFADDR: | |
b70ab2e8 PB |
71 | { |
72 | u16 pan_id, short_addr; | |
73 | ||
863e88f2 AA |
74 | pan_id = le16_to_cpu(wpan_dev->pan_id); |
75 | short_addr = le16_to_cpu(wpan_dev->short_addr); | |
b70ab2e8 PB |
76 | if (pan_id == IEEE802154_PANID_BROADCAST || |
77 | short_addr == IEEE802154_ADDR_BROADCAST) { | |
32bad7e3 | 78 | err = -EADDRNOTAVAIL; |
79 | break; | |
80 | } | |
81 | ||
82 | sa->family = AF_IEEE802154; | |
83 | sa->addr.addr_type = IEEE802154_ADDR_SHORT; | |
b70ab2e8 PB |
84 | sa->addr.pan_id = pan_id; |
85 | sa->addr.short_addr = short_addr; | |
32bad7e3 | 86 | |
87 | err = 0; | |
88 | break; | |
b70ab2e8 | 89 | } |
32bad7e3 | 90 | case SIOCSIFADDR: |
f7cb96f1 AA |
91 | if (netif_running(dev)) { |
92 | spin_unlock_bh(&sdata->mib_lock); | |
93 | return -EBUSY; | |
94 | } | |
95 | ||
32bad7e3 | 96 | dev_warn(&dev->dev, |
9b13494c | 97 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n"); |
32bad7e3 | 98 | if (sa->family != AF_IEEE802154 || |
99 | sa->addr.addr_type != IEEE802154_ADDR_SHORT || | |
100 | sa->addr.pan_id == IEEE802154_PANID_BROADCAST || | |
101 | sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || | |
102 | sa->addr.short_addr == IEEE802154_ADDR_UNDEF) { | |
103 | err = -EINVAL; | |
104 | break; | |
105 | } | |
106 | ||
863e88f2 AA |
107 | wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id); |
108 | wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr); | |
32bad7e3 | 109 | |
9b0bb4a8 | 110 | err = mac802154_wpan_update_llsec(dev); |
32bad7e3 | 111 | break; |
112 | } | |
113 | ||
036562f9 | 114 | spin_unlock_bh(&sdata->mib_lock); |
32bad7e3 | 115 | return err; |
116 | } | |
117 | ||
118 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
119 | { | |
776e59de | 120 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
32bad7e3 | 121 | struct sockaddr *addr = p; |
ea7053c1 | 122 | __le64 extended_addr; |
32bad7e3 | 123 | |
124 | if (netif_running(dev)) | |
125 | return -EBUSY; | |
126 | ||
705cbbbe | 127 | ieee802154_be64_to_le64(&extended_addr, addr->sa_data); |
ea7053c1 AA |
128 | if (!ieee802154_is_valid_extended_addr(extended_addr)) |
129 | return -EINVAL; | |
130 | ||
32bad7e3 | 131 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
863e88f2 | 132 | sdata->wpan_dev.extended_addr = extended_addr; |
776e59de | 133 | |
9b0bb4a8 | 134 | return mac802154_wpan_update_llsec(dev); |
32bad7e3 | 135 | } |
136 | ||
19ec690a AA |
137 | static int mac802154_slave_open(struct net_device *dev) |
138 | { | |
139 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
19ec690a AA |
140 | struct ieee802154_local *local = sdata->local; |
141 | int res = 0; | |
142 | ||
143 | ASSERT_RTNL(); | |
144 | ||
0ea3da64 | 145 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 146 | |
74457641 | 147 | if (!local->open_count) { |
59cb300f | 148 | res = drv_start(local); |
19ec690a AA |
149 | WARN_ON(res); |
150 | if (res) | |
151 | goto err; | |
152 | } | |
153 | ||
74457641 | 154 | local->open_count++; |
19ec690a AA |
155 | netif_start_queue(dev); |
156 | return 0; | |
157 | err: | |
0ea3da64 AA |
158 | /* might already be clear but that doesn't matter */ |
159 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
160 | |
161 | return res; | |
162 | } | |
163 | ||
bd37a78d AA |
164 | static int |
165 | ieee802154_check_mac_settings(struct ieee802154_local *local, | |
166 | struct wpan_dev *wpan_dev, | |
167 | struct wpan_dev *nwpan_dev) | |
168 | { | |
169 | ASSERT_RTNL(); | |
170 | ||
171 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { | |
172 | if (wpan_dev->promiscuous_mode != nwpan_dev->promiscuous_mode) | |
173 | return -EBUSY; | |
174 | } | |
175 | ||
176 | if (local->hw.flags & IEEE802154_HW_AFILT) { | |
8bf9538a AA |
177 | if (wpan_dev->pan_id != nwpan_dev->pan_id || |
178 | wpan_dev->short_addr != nwpan_dev->short_addr || | |
179 | wpan_dev->extended_addr != nwpan_dev->extended_addr) | |
bd37a78d AA |
180 | return -EBUSY; |
181 | } | |
182 | ||
183 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { | |
8bf9538a AA |
184 | if (wpan_dev->min_be != nwpan_dev->min_be || |
185 | wpan_dev->max_be != nwpan_dev->max_be || | |
186 | wpan_dev->csma_retries != nwpan_dev->csma_retries) | |
bd37a78d AA |
187 | return -EBUSY; |
188 | } | |
189 | ||
190 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { | |
191 | if (wpan_dev->frame_retries != nwpan_dev->frame_retries) | |
192 | return -EBUSY; | |
193 | } | |
194 | ||
195 | if (local->hw.flags & IEEE802154_HW_LBT) { | |
196 | if (wpan_dev->lbt != nwpan_dev->lbt) | |
197 | return -EBUSY; | |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static int | |
204 | ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata, | |
205 | enum nl802154_iftype iftype) | |
206 | { | |
207 | struct ieee802154_local *local = sdata->local; | |
208 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; | |
209 | struct ieee802154_sub_if_data *nsdata; | |
210 | ||
211 | /* we hold the RTNL here so can safely walk the list */ | |
212 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
213 | if (nsdata != sdata && ieee802154_sdata_running(nsdata)) { | |
214 | int ret; | |
215 | ||
cd1c5665 AA |
216 | /* TODO currently we don't support multiple node types |
217 | * we need to run skb_clone at rx path. Check if there | |
218 | * exist really an use case if we need to support | |
219 | * multiple node types at the same time. | |
220 | */ | |
221 | if (sdata->vif.type == NL802154_IFTYPE_NODE && | |
222 | nsdata->vif.type == NL802154_IFTYPE_NODE) | |
223 | return -EBUSY; | |
224 | ||
bd37a78d AA |
225 | /* check all phy mac sublayer settings are the same. |
226 | * We have only one phy, different values makes trouble. | |
227 | */ | |
228 | ret = ieee802154_check_mac_settings(local, wpan_dev, | |
229 | &nsdata->wpan_dev); | |
230 | if (ret < 0) | |
231 | return ret; | |
232 | } | |
233 | } | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
6ef0023a | 238 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
239 | { |
240 | int rc; | |
59d19cd7 | 241 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
59cb300f | 242 | struct ieee802154_local *local = sdata->local; |
863e88f2 | 243 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
04e850fe | 244 | struct wpan_phy *phy = sdata->local->phy; |
e462ded6 | 245 | |
bd37a78d AA |
246 | rc = ieee802154_check_concurrent_iface(sdata, sdata->vif.type); |
247 | if (rc < 0) | |
248 | return rc; | |
249 | ||
e462ded6 PB |
250 | rc = mac802154_slave_open(dev); |
251 | if (rc < 0) | |
252 | return rc; | |
253 | ||
254 | mutex_lock(&phy->pib_lock); | |
255 | ||
38130c31 | 256 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { |
863e88f2 AA |
257 | rc = drv_set_promiscuous_mode(local, |
258 | wpan_dev->promiscuous_mode); | |
38130c31 AA |
259 | if (rc < 0) |
260 | goto out; | |
261 | } | |
262 | ||
776e59de | 263 | if (local->hw.flags & IEEE802154_HW_AFILT) { |
863e88f2 | 264 | rc = drv_set_pan_id(local, wpan_dev->pan_id); |
50c79075 AA |
265 | if (rc < 0) |
266 | goto out; | |
267 | ||
863e88f2 | 268 | rc = drv_set_extended_addr(local, wpan_dev->extended_addr); |
776e59de AA |
269 | if (rc < 0) |
270 | goto out; | |
78b4bad1 | 271 | |
863e88f2 | 272 | rc = drv_set_short_addr(local, wpan_dev->short_addr); |
78b4bad1 AA |
273 | if (rc < 0) |
274 | goto out; | |
776e59de AA |
275 | } |
276 | ||
a543c598 | 277 | if (local->hw.flags & IEEE802154_HW_LBT) { |
5fb3f026 | 278 | rc = drv_set_lbt_mode(local, wpan_dev->lbt); |
e462ded6 PB |
279 | if (rc < 0) |
280 | goto out; | |
281 | } | |
282 | ||
a543c598 | 283 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { |
5fb3f026 AA |
284 | rc = drv_set_csma_params(local, wpan_dev->min_be, |
285 | wpan_dev->max_be, | |
286 | wpan_dev->csma_retries); | |
e462ded6 PB |
287 | if (rc < 0) |
288 | goto out; | |
289 | } | |
290 | ||
a543c598 | 291 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { |
5fb3f026 | 292 | rc = drv_set_max_frame_retries(local, wpan_dev->frame_retries); |
e462ded6 PB |
293 | if (rc < 0) |
294 | goto out; | |
295 | } | |
296 | ||
297 | mutex_unlock(&phy->pib_lock); | |
298 | return 0; | |
299 | ||
300 | out: | |
301 | mutex_unlock(&phy->pib_lock); | |
302 | return rc; | |
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 | ||
61f2dcba AA |
312 | hrtimer_cancel(&local->ifs_timer); |
313 | ||
19ec690a | 314 | netif_stop_queue(dev); |
74457641 | 315 | local->open_count--; |
19ec690a | 316 | |
0ea3da64 | 317 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 318 | |
74457641 | 319 | if (!local->open_count) |
59cb300f | 320 | drv_stop(local); |
19ec690a AA |
321 | |
322 | return 0; | |
323 | } | |
324 | ||
036562f9 | 325 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
326 | struct ieee802154_hdr *hdr, |
327 | const struct ieee802154_mac_cb *cb) | |
328 | { | |
329 | struct ieee802154_llsec_params params; | |
330 | u8 level; | |
331 | ||
036562f9 | 332 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
333 | |
334 | if (!params.enabled && cb->secen_override && cb->secen) | |
335 | return -EINVAL; | |
336 | if (!params.enabled || | |
337 | (cb->secen_override && !cb->secen) || | |
338 | !params.out_level) | |
339 | return 0; | |
340 | if (cb->seclevel_override && !cb->seclevel) | |
341 | return -EINVAL; | |
342 | ||
343 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
344 | ||
345 | hdr->fc.security_enabled = 1; | |
346 | hdr->sec.level = level; | |
347 | hdr->sec.key_id_mode = params.out_key.mode; | |
348 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
349 | hdr->sec.short_src = params.out_key.short_source; | |
350 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
351 | hdr->sec.extended_src = params.out_key.extended_source; | |
352 | hdr->sec.key_id = params.out_key.id; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
32bad7e3 | 357 | static int mac802154_header_create(struct sk_buff *skb, |
358 | struct net_device *dev, | |
359 | unsigned short type, | |
e6278d92 PB |
360 | const void *daddr, |
361 | const void *saddr, | |
32bad7e3 | 362 | unsigned len) |
363 | { | |
e6278d92 | 364 | struct ieee802154_hdr hdr; |
59d19cd7 | 365 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 366 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32edc40a | 367 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 368 | int hlen; |
32bad7e3 | 369 | |
370 | if (!daddr) | |
371 | return -EINVAL; | |
372 | ||
e6278d92 | 373 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
374 | hdr.fc.type = cb->type; |
375 | hdr.fc.security_enabled = cb->secen; | |
376 | hdr.fc.ack_request = cb->ackreq; | |
377 | hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev); | |
32bad7e3 | 378 | |
036562f9 | 379 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
380 | return -EINVAL; |
381 | ||
32bad7e3 | 382 | if (!saddr) { |
036562f9 | 383 | spin_lock_bh(&sdata->mib_lock); |
32bad7e3 | 384 | |
863e88f2 AA |
385 | if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
386 | wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
387 | wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 388 | hdr.source.mode = IEEE802154_ADDR_LONG; |
863e88f2 | 389 | hdr.source.extended_addr = wpan_dev->extended_addr; |
32bad7e3 | 390 | } else { |
e6278d92 | 391 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
863e88f2 | 392 | hdr.source.short_addr = wpan_dev->short_addr; |
32bad7e3 | 393 | } |
394 | ||
863e88f2 | 395 | hdr.source.pan_id = wpan_dev->pan_id; |
32bad7e3 | 396 | |
036562f9 | 397 | spin_unlock_bh(&sdata->mib_lock); |
e6278d92 PB |
398 | } else { |
399 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 400 | } |
401 | ||
e6278d92 | 402 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 403 | |
e6278d92 PB |
404 | hlen = ieee802154_hdr_push(skb, &hdr); |
405 | if (hlen < 0) | |
406 | return -EINVAL; | |
32bad7e3 | 407 | |
3e69162e | 408 | skb_reset_mac_header(skb); |
e6278d92 | 409 | skb->mac_len = hlen; |
32bad7e3 | 410 | |
8c84296f | 411 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
412 | return -EMSGSIZE; |
413 | ||
e6278d92 | 414 | return hlen; |
32bad7e3 | 415 | } |
416 | ||
417 | static int | |
418 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
419 | { | |
e6278d92 PB |
420 | struct ieee802154_hdr hdr; |
421 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 422 | |
e6278d92 PB |
423 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
424 | pr_debug("malformed packet\n"); | |
425 | return 0; | |
32bad7e3 | 426 | } |
427 | ||
e6278d92 PB |
428 | *addr = hdr.source; |
429 | return sizeof(*addr); | |
32bad7e3 | 430 | } |
431 | ||
32bad7e3 | 432 | static struct header_ops mac802154_header_ops = { |
433 | .create = mac802154_header_create, | |
434 | .parse = mac802154_header_parse, | |
435 | }; | |
436 | ||
437 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 438 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 439 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 440 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 441 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
442 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
443 | }; | |
444 | ||
b9ff77e5 | 445 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 446 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
447 | .ndo_stop = mac802154_slave_close, |
448 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
449 | }; | |
450 | ||
f30be4d5 PB |
451 | static void mac802154_wpan_free(struct net_device *dev) |
452 | { | |
59d19cd7 | 453 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 454 | |
036562f9 | 455 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
456 | |
457 | free_netdev(dev); | |
458 | } | |
459 | ||
d5ae67ba | 460 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 461 | { |
e57a8946 AA |
462 | dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN; |
463 | memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN); | |
32bad7e3 | 464 | |
465 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 466 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 467 | dev->mtu = IEEE802154_MTU; |
e937f583 | 468 | dev->tx_queue_len = 300; |
32bad7e3 | 469 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 470 | } |
32bad7e3 | 471 | |
d5ae67ba | 472 | static int |
944742a3 AA |
473 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, |
474 | enum nl802154_iftype type) | |
d5ae67ba | 475 | { |
863e88f2 AA |
476 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
477 | ||
d5ae67ba | 478 | /* set some type-dependent values */ |
7c118c1a | 479 | sdata->vif.type = type; |
190ac1ca | 480 | sdata->wpan_dev.iftype = type; |
32bad7e3 | 481 | |
863e88f2 AA |
482 | get_random_bytes(&wpan_dev->bsn, 1); |
483 | get_random_bytes(&wpan_dev->dsn, 1); | |
32bad7e3 | 484 | |
e462ded6 | 485 | /* defaults per 802.15.4-2011 */ |
5fb3f026 AA |
486 | wpan_dev->min_be = 3; |
487 | wpan_dev->max_be = 5; | |
488 | wpan_dev->csma_retries = 4; | |
036562f9 | 489 | /* for compatibility, actual default is 3 */ |
5fb3f026 | 490 | wpan_dev->frame_retries = -1; |
e462ded6 | 491 | |
863e88f2 AA |
492 | wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
493 | wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 494 | |
d5ae67ba | 495 | switch (type) { |
944742a3 | 496 | case NL802154_IFTYPE_NODE: |
b03c9ccc AA |
497 | ieee802154_be64_to_le64(&wpan_dev->extended_addr, |
498 | sdata->dev->dev_addr); | |
499 | ||
d5ae67ba AA |
500 | sdata->dev->header_ops = &mac802154_header_ops; |
501 | sdata->dev->destructor = mac802154_wpan_free; | |
502 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
503 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
863e88f2 | 504 | wpan_dev->promiscuous_mode = false; |
986a8abf | 505 | |
d5ae67ba AA |
506 | spin_lock_init(&sdata->mib_lock); |
507 | mutex_init(&sdata->sec_mtx); | |
986a8abf | 508 | |
d5ae67ba AA |
509 | mac802154_llsec_init(&sdata->sec); |
510 | break; | |
944742a3 | 511 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba AA |
512 | sdata->dev->destructor = free_netdev; |
513 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
863e88f2 | 514 | wpan_dev->promiscuous_mode = true; |
d5ae67ba AA |
515 | break; |
516 | default: | |
517 | BUG(); | |
518 | } | |
986a8abf AA |
519 | |
520 | return 0; | |
521 | } | |
522 | ||
523 | struct net_device * | |
524 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
0e57547e | 525 | enum nl802154_iftype type, __le64 extended_addr) |
986a8abf | 526 | { |
d5ae67ba AA |
527 | struct net_device *ndev = NULL; |
528 | struct ieee802154_sub_if_data *sdata = NULL; | |
529 | int ret = -ENOMEM; | |
530 | ||
531 | ASSERT_RTNL(); | |
532 | ||
7c118c1a AA |
533 | ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name, |
534 | NET_NAME_UNKNOWN, ieee802154_if_setup); | |
d5ae67ba AA |
535 | if (!ndev) |
536 | return ERR_PTR(-ENOMEM); | |
537 | ||
538 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
539 | ||
540 | ret = dev_alloc_name(ndev, ndev->name); | |
541 | if (ret < 0) | |
542 | goto err; | |
986a8abf | 543 | |
0e57547e AA |
544 | ieee802154_le64_to_be64(ndev->perm_addr, |
545 | &local->hw.phy->perm_extended_addr); | |
986a8abf | 546 | switch (type) { |
944742a3 | 547 | case NL802154_IFTYPE_NODE: |
d5ae67ba | 548 | ndev->type = ARPHRD_IEEE802154; |
0e57547e AA |
549 | if (ieee802154_is_valid_extended_addr(extended_addr)) |
550 | ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr); | |
551 | else | |
552 | memcpy(ndev->dev_addr, ndev->perm_addr, | |
553 | IEEE802154_EXTENDED_ADDR_LEN); | |
986a8abf | 554 | break; |
944742a3 | 555 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba | 556 | ndev->type = ARPHRD_IEEE802154_MONITOR; |
986a8abf | 557 | break; |
d5ae67ba AA |
558 | default: |
559 | ret = -EINVAL; | |
560 | goto err; | |
986a8abf | 561 | } |
d5ae67ba AA |
562 | |
563 | /* TODO check this */ | |
564 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
565 | sdata = netdev_priv(ndev); | |
566 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
567 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
568 | sdata->dev = ndev; | |
569 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
570 | sdata->local = local; | |
571 | ||
572 | /* setup type-dependent data */ | |
573 | ret = ieee802154_setup_sdata(sdata, type); | |
574 | if (ret) | |
986a8abf AA |
575 | goto err; |
576 | ||
473f3766 VB |
577 | ret = register_netdevice(ndev); |
578 | if (ret < 0) | |
579 | goto err; | |
d5ae67ba AA |
580 | |
581 | mutex_lock(&local->iflist_mtx); | |
582 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
583 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 584 | |
d5ae67ba | 585 | return ndev; |
986a8abf | 586 | |
986a8abf | 587 | err: |
d5ae67ba AA |
588 | free_netdev(ndev); |
589 | return ERR_PTR(ret); | |
986a8abf AA |
590 | } |
591 | ||
b210b187 AA |
592 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
593 | { | |
594 | ASSERT_RTNL(); | |
595 | ||
596 | mutex_lock(&sdata->local->iflist_mtx); | |
597 | list_del_rcu(&sdata->list); | |
598 | mutex_unlock(&sdata->local->iflist_mtx); | |
599 | ||
600 | synchronize_rcu(); | |
601 | unregister_netdevice(sdata->dev); | |
602 | } | |
592dfbfc AA |
603 | |
604 | void ieee802154_remove_interfaces(struct ieee802154_local *local) | |
605 | { | |
d14e1c71 | 606 | struct ieee802154_sub_if_data *sdata, *tmp; |
592dfbfc | 607 | |
2789e629 | 608 | mutex_lock(&local->iflist_mtx); |
d14e1c71 | 609 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
592dfbfc | 610 | list_del(&sdata->list); |
592dfbfc AA |
611 | |
612 | unregister_netdevice(sdata->dev); | |
613 | } | |
2789e629 | 614 | mutex_unlock(&local->iflist_mtx); |
592dfbfc | 615 | } |
be4fd8e5 AA |
616 | |
617 | static int netdev_notify(struct notifier_block *nb, | |
618 | unsigned long state, void *ptr) | |
619 | { | |
620 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
621 | struct ieee802154_sub_if_data *sdata; | |
622 | ||
623 | if (state != NETDEV_CHANGENAME) | |
624 | return NOTIFY_DONE; | |
625 | ||
626 | if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy) | |
627 | return NOTIFY_DONE; | |
628 | ||
629 | if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid) | |
630 | return NOTIFY_DONE; | |
631 | ||
632 | sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
633 | memcpy(sdata->name, dev->name, IFNAMSIZ); | |
634 | ||
635 | return NOTIFY_OK; | |
636 | } | |
637 | ||
638 | static struct notifier_block mac802154_netdev_notifier = { | |
639 | .notifier_call = netdev_notify, | |
640 | }; | |
641 | ||
642 | int ieee802154_iface_init(void) | |
643 | { | |
644 | return register_netdevice_notifier(&mac802154_netdev_notifier); | |
645 | } | |
646 | ||
647 | void ieee802154_iface_exit(void) | |
648 | { | |
649 | unregister_netdevice_notifier(&mac802154_netdev_notifier); | |
650 | } |