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); |
ea7053c1 AA |
129 | if (!ieee802154_is_valid_extended_addr(extended_addr)) |
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 | ||
19ec690a AA |
138 | static int mac802154_slave_open(struct net_device *dev) |
139 | { | |
140 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
19ec690a AA |
141 | struct ieee802154_local *local = sdata->local; |
142 | int res = 0; | |
143 | ||
144 | ASSERT_RTNL(); | |
145 | ||
0ea3da64 | 146 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 147 | |
74457641 | 148 | if (!local->open_count) { |
59cb300f | 149 | res = drv_start(local); |
19ec690a AA |
150 | WARN_ON(res); |
151 | if (res) | |
152 | goto err; | |
153 | } | |
154 | ||
74457641 | 155 | local->open_count++; |
19ec690a AA |
156 | netif_start_queue(dev); |
157 | return 0; | |
158 | err: | |
0ea3da64 AA |
159 | /* might already be clear but that doesn't matter */ |
160 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
161 | |
162 | return res; | |
163 | } | |
164 | ||
bd37a78d AA |
165 | static int |
166 | ieee802154_check_mac_settings(struct ieee802154_local *local, | |
167 | struct wpan_dev *wpan_dev, | |
168 | struct wpan_dev *nwpan_dev) | |
169 | { | |
170 | ASSERT_RTNL(); | |
171 | ||
172 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { | |
173 | if (wpan_dev->promiscuous_mode != nwpan_dev->promiscuous_mode) | |
174 | return -EBUSY; | |
175 | } | |
176 | ||
177 | if (local->hw.flags & IEEE802154_HW_AFILT) { | |
8bf9538a AA |
178 | if (wpan_dev->pan_id != nwpan_dev->pan_id || |
179 | wpan_dev->short_addr != nwpan_dev->short_addr || | |
180 | wpan_dev->extended_addr != nwpan_dev->extended_addr) | |
bd37a78d AA |
181 | return -EBUSY; |
182 | } | |
183 | ||
184 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { | |
8bf9538a AA |
185 | if (wpan_dev->min_be != nwpan_dev->min_be || |
186 | wpan_dev->max_be != nwpan_dev->max_be || | |
187 | wpan_dev->csma_retries != nwpan_dev->csma_retries) | |
bd37a78d AA |
188 | return -EBUSY; |
189 | } | |
190 | ||
191 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { | |
192 | if (wpan_dev->frame_retries != nwpan_dev->frame_retries) | |
193 | return -EBUSY; | |
194 | } | |
195 | ||
196 | if (local->hw.flags & IEEE802154_HW_LBT) { | |
197 | if (wpan_dev->lbt != nwpan_dev->lbt) | |
198 | return -EBUSY; | |
199 | } | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int | |
205 | ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata, | |
206 | enum nl802154_iftype iftype) | |
207 | { | |
208 | struct ieee802154_local *local = sdata->local; | |
209 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; | |
210 | struct ieee802154_sub_if_data *nsdata; | |
211 | ||
212 | /* we hold the RTNL here so can safely walk the list */ | |
213 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
214 | if (nsdata != sdata && ieee802154_sdata_running(nsdata)) { | |
215 | int ret; | |
216 | ||
cd1c5665 AA |
217 | /* TODO currently we don't support multiple node types |
218 | * we need to run skb_clone at rx path. Check if there | |
219 | * exist really an use case if we need to support | |
220 | * multiple node types at the same time. | |
221 | */ | |
222 | if (sdata->vif.type == NL802154_IFTYPE_NODE && | |
223 | nsdata->vif.type == NL802154_IFTYPE_NODE) | |
224 | return -EBUSY; | |
225 | ||
bd37a78d AA |
226 | /* check all phy mac sublayer settings are the same. |
227 | * We have only one phy, different values makes trouble. | |
228 | */ | |
229 | ret = ieee802154_check_mac_settings(local, wpan_dev, | |
230 | &nsdata->wpan_dev); | |
231 | if (ret < 0) | |
232 | return ret; | |
233 | } | |
234 | } | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
6ef0023a | 239 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
240 | { |
241 | int rc; | |
59d19cd7 | 242 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
59cb300f | 243 | struct ieee802154_local *local = sdata->local; |
863e88f2 | 244 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
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 | ||
38130c31 | 254 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { |
863e88f2 AA |
255 | rc = drv_set_promiscuous_mode(local, |
256 | wpan_dev->promiscuous_mode); | |
38130c31 AA |
257 | if (rc < 0) |
258 | goto out; | |
259 | } | |
260 | ||
776e59de | 261 | if (local->hw.flags & IEEE802154_HW_AFILT) { |
863e88f2 | 262 | rc = drv_set_pan_id(local, wpan_dev->pan_id); |
50c79075 AA |
263 | if (rc < 0) |
264 | goto out; | |
265 | ||
863e88f2 | 266 | rc = drv_set_extended_addr(local, wpan_dev->extended_addr); |
776e59de AA |
267 | if (rc < 0) |
268 | goto out; | |
78b4bad1 | 269 | |
863e88f2 | 270 | rc = drv_set_short_addr(local, wpan_dev->short_addr); |
78b4bad1 AA |
271 | if (rc < 0) |
272 | goto out; | |
776e59de AA |
273 | } |
274 | ||
a543c598 | 275 | if (local->hw.flags & IEEE802154_HW_LBT) { |
5fb3f026 | 276 | rc = drv_set_lbt_mode(local, wpan_dev->lbt); |
e462ded6 PB |
277 | if (rc < 0) |
278 | goto out; | |
279 | } | |
280 | ||
a543c598 | 281 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { |
5fb3f026 AA |
282 | rc = drv_set_csma_params(local, wpan_dev->min_be, |
283 | wpan_dev->max_be, | |
284 | wpan_dev->csma_retries); | |
e462ded6 PB |
285 | if (rc < 0) |
286 | goto out; | |
287 | } | |
288 | ||
a543c598 | 289 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { |
5fb3f026 | 290 | rc = drv_set_max_frame_retries(local, wpan_dev->frame_retries); |
e462ded6 PB |
291 | if (rc < 0) |
292 | goto out; | |
293 | } | |
294 | ||
e462ded6 | 295 | out: |
e462ded6 PB |
296 | return rc; |
297 | } | |
298 | ||
19ec690a AA |
299 | static int mac802154_slave_close(struct net_device *dev) |
300 | { | |
301 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
302 | struct ieee802154_local *local = sdata->local; | |
303 | ||
304 | ASSERT_RTNL(); | |
305 | ||
61f2dcba AA |
306 | hrtimer_cancel(&local->ifs_timer); |
307 | ||
19ec690a | 308 | netif_stop_queue(dev); |
74457641 | 309 | local->open_count--; |
19ec690a | 310 | |
0ea3da64 | 311 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 312 | |
74457641 | 313 | if (!local->open_count) |
59cb300f | 314 | drv_stop(local); |
19ec690a AA |
315 | |
316 | return 0; | |
317 | } | |
318 | ||
036562f9 | 319 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
320 | struct ieee802154_hdr *hdr, |
321 | const struct ieee802154_mac_cb *cb) | |
322 | { | |
323 | struct ieee802154_llsec_params params; | |
324 | u8 level; | |
325 | ||
036562f9 | 326 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
327 | |
328 | if (!params.enabled && cb->secen_override && cb->secen) | |
329 | return -EINVAL; | |
330 | if (!params.enabled || | |
331 | (cb->secen_override && !cb->secen) || | |
332 | !params.out_level) | |
333 | return 0; | |
334 | if (cb->seclevel_override && !cb->seclevel) | |
335 | return -EINVAL; | |
336 | ||
337 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
338 | ||
339 | hdr->fc.security_enabled = 1; | |
340 | hdr->sec.level = level; | |
341 | hdr->sec.key_id_mode = params.out_key.mode; | |
342 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
343 | hdr->sec.short_src = params.out_key.short_source; | |
344 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
345 | hdr->sec.extended_src = params.out_key.extended_source; | |
346 | hdr->sec.key_id = params.out_key.id; | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
32bad7e3 | 351 | static int mac802154_header_create(struct sk_buff *skb, |
352 | struct net_device *dev, | |
353 | unsigned short type, | |
e6278d92 PB |
354 | const void *daddr, |
355 | const void *saddr, | |
32bad7e3 | 356 | unsigned len) |
357 | { | |
e6278d92 | 358 | struct ieee802154_hdr hdr; |
59d19cd7 | 359 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 360 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32edc40a | 361 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 362 | int hlen; |
32bad7e3 | 363 | |
364 | if (!daddr) | |
365 | return -EINVAL; | |
366 | ||
e6278d92 | 367 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
368 | hdr.fc.type = cb->type; |
369 | hdr.fc.security_enabled = cb->secen; | |
370 | hdr.fc.ack_request = cb->ackreq; | |
344f8c11 | 371 | hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF; |
32bad7e3 | 372 | |
036562f9 | 373 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
374 | return -EINVAL; |
375 | ||
32bad7e3 | 376 | if (!saddr) { |
863e88f2 AA |
377 | if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
378 | wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
379 | wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 380 | hdr.source.mode = IEEE802154_ADDR_LONG; |
863e88f2 | 381 | hdr.source.extended_addr = wpan_dev->extended_addr; |
32bad7e3 | 382 | } else { |
e6278d92 | 383 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
863e88f2 | 384 | hdr.source.short_addr = wpan_dev->short_addr; |
32bad7e3 | 385 | } |
386 | ||
863e88f2 | 387 | hdr.source.pan_id = wpan_dev->pan_id; |
e6278d92 PB |
388 | } else { |
389 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 390 | } |
391 | ||
e6278d92 | 392 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 393 | |
e6278d92 PB |
394 | hlen = ieee802154_hdr_push(skb, &hdr); |
395 | if (hlen < 0) | |
396 | return -EINVAL; | |
32bad7e3 | 397 | |
3e69162e | 398 | skb_reset_mac_header(skb); |
e6278d92 | 399 | skb->mac_len = hlen; |
32bad7e3 | 400 | |
8c84296f | 401 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
402 | return -EMSGSIZE; |
403 | ||
e6278d92 | 404 | return hlen; |
32bad7e3 | 405 | } |
406 | ||
407 | static int | |
408 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
409 | { | |
e6278d92 PB |
410 | struct ieee802154_hdr hdr; |
411 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 412 | |
e6278d92 PB |
413 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
414 | pr_debug("malformed packet\n"); | |
415 | return 0; | |
32bad7e3 | 416 | } |
417 | ||
e6278d92 PB |
418 | *addr = hdr.source; |
419 | return sizeof(*addr); | |
32bad7e3 | 420 | } |
421 | ||
32bad7e3 | 422 | static struct header_ops mac802154_header_ops = { |
423 | .create = mac802154_header_create, | |
424 | .parse = mac802154_header_parse, | |
425 | }; | |
426 | ||
427 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 428 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 429 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 430 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 431 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
432 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
433 | }; | |
434 | ||
b9ff77e5 | 435 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 436 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
437 | .ndo_stop = mac802154_slave_close, |
438 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
439 | }; | |
440 | ||
f30be4d5 PB |
441 | static void mac802154_wpan_free(struct net_device *dev) |
442 | { | |
59d19cd7 | 443 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 444 | |
036562f9 | 445 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
446 | |
447 | free_netdev(dev); | |
448 | } | |
449 | ||
d5ae67ba | 450 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 451 | { |
e57a8946 AA |
452 | dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN; |
453 | memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN); | |
32bad7e3 | 454 | |
455 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 456 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 457 | dev->mtu = IEEE802154_MTU; |
e937f583 | 458 | dev->tx_queue_len = 300; |
32bad7e3 | 459 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 460 | } |
32bad7e3 | 461 | |
d5ae67ba | 462 | static int |
944742a3 AA |
463 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, |
464 | enum nl802154_iftype type) | |
d5ae67ba | 465 | { |
863e88f2 | 466 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
344f8c11 | 467 | u8 tmp; |
863e88f2 | 468 | |
d5ae67ba | 469 | /* set some type-dependent values */ |
7c118c1a | 470 | sdata->vif.type = type; |
190ac1ca | 471 | sdata->wpan_dev.iftype = type; |
32bad7e3 | 472 | |
344f8c11 AA |
473 | get_random_bytes(&tmp, sizeof(tmp)); |
474 | atomic_set(&wpan_dev->bsn, tmp); | |
475 | get_random_bytes(&tmp, sizeof(tmp)); | |
476 | atomic_set(&wpan_dev->dsn, tmp); | |
32bad7e3 | 477 | |
e462ded6 | 478 | /* defaults per 802.15.4-2011 */ |
5fb3f026 AA |
479 | wpan_dev->min_be = 3; |
480 | wpan_dev->max_be = 5; | |
481 | wpan_dev->csma_retries = 4; | |
036562f9 | 482 | /* for compatibility, actual default is 3 */ |
5fb3f026 | 483 | wpan_dev->frame_retries = -1; |
e462ded6 | 484 | |
863e88f2 AA |
485 | wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
486 | wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 487 | |
d5ae67ba | 488 | switch (type) { |
944742a3 | 489 | case NL802154_IFTYPE_NODE: |
b03c9ccc AA |
490 | ieee802154_be64_to_le64(&wpan_dev->extended_addr, |
491 | sdata->dev->dev_addr); | |
492 | ||
d5ae67ba AA |
493 | sdata->dev->header_ops = &mac802154_header_ops; |
494 | sdata->dev->destructor = mac802154_wpan_free; | |
495 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
496 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
863e88f2 | 497 | wpan_dev->promiscuous_mode = false; |
986a8abf | 498 | |
d5ae67ba | 499 | mutex_init(&sdata->sec_mtx); |
986a8abf | 500 | |
d5ae67ba AA |
501 | mac802154_llsec_init(&sdata->sec); |
502 | break; | |
944742a3 | 503 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba AA |
504 | sdata->dev->destructor = free_netdev; |
505 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
863e88f2 | 506 | wpan_dev->promiscuous_mode = true; |
d5ae67ba AA |
507 | break; |
508 | default: | |
509 | BUG(); | |
510 | } | |
986a8abf AA |
511 | |
512 | return 0; | |
513 | } | |
514 | ||
515 | struct net_device * | |
516 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
5b4a1039 VB |
517 | unsigned char name_assign_type, enum nl802154_iftype type, |
518 | __le64 extended_addr) | |
986a8abf | 519 | { |
d5ae67ba AA |
520 | struct net_device *ndev = NULL; |
521 | struct ieee802154_sub_if_data *sdata = NULL; | |
522 | int ret = -ENOMEM; | |
523 | ||
524 | ASSERT_RTNL(); | |
525 | ||
7c118c1a | 526 | ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name, |
5b4a1039 | 527 | name_assign_type, ieee802154_if_setup); |
d5ae67ba AA |
528 | if (!ndev) |
529 | return ERR_PTR(-ENOMEM); | |
530 | ||
531 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
532 | ||
533 | ret = dev_alloc_name(ndev, ndev->name); | |
534 | if (ret < 0) | |
535 | goto err; | |
986a8abf | 536 | |
0e57547e AA |
537 | ieee802154_le64_to_be64(ndev->perm_addr, |
538 | &local->hw.phy->perm_extended_addr); | |
986a8abf | 539 | switch (type) { |
944742a3 | 540 | case NL802154_IFTYPE_NODE: |
d5ae67ba | 541 | ndev->type = ARPHRD_IEEE802154; |
0e57547e AA |
542 | if (ieee802154_is_valid_extended_addr(extended_addr)) |
543 | ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr); | |
544 | else | |
545 | memcpy(ndev->dev_addr, ndev->perm_addr, | |
546 | IEEE802154_EXTENDED_ADDR_LEN); | |
986a8abf | 547 | break; |
944742a3 | 548 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba | 549 | ndev->type = ARPHRD_IEEE802154_MONITOR; |
986a8abf | 550 | break; |
d5ae67ba AA |
551 | default: |
552 | ret = -EINVAL; | |
553 | goto err; | |
986a8abf | 554 | } |
d5ae67ba AA |
555 | |
556 | /* TODO check this */ | |
557 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
558 | sdata = netdev_priv(ndev); | |
559 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
560 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
561 | sdata->dev = ndev; | |
562 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
563 | sdata->local = local; | |
564 | ||
565 | /* setup type-dependent data */ | |
566 | ret = ieee802154_setup_sdata(sdata, type); | |
567 | if (ret) | |
986a8abf AA |
568 | goto err; |
569 | ||
473f3766 VB |
570 | ret = register_netdevice(ndev); |
571 | if (ret < 0) | |
572 | goto err; | |
d5ae67ba AA |
573 | |
574 | mutex_lock(&local->iflist_mtx); | |
575 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
576 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 577 | |
d5ae67ba | 578 | return ndev; |
986a8abf | 579 | |
986a8abf | 580 | err: |
d5ae67ba AA |
581 | free_netdev(ndev); |
582 | return ERR_PTR(ret); | |
986a8abf AA |
583 | } |
584 | ||
b210b187 AA |
585 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
586 | { | |
587 | ASSERT_RTNL(); | |
588 | ||
589 | mutex_lock(&sdata->local->iflist_mtx); | |
590 | list_del_rcu(&sdata->list); | |
591 | mutex_unlock(&sdata->local->iflist_mtx); | |
592 | ||
593 | synchronize_rcu(); | |
594 | unregister_netdevice(sdata->dev); | |
595 | } | |
592dfbfc AA |
596 | |
597 | void ieee802154_remove_interfaces(struct ieee802154_local *local) | |
598 | { | |
d14e1c71 | 599 | struct ieee802154_sub_if_data *sdata, *tmp; |
592dfbfc | 600 | |
2789e629 | 601 | mutex_lock(&local->iflist_mtx); |
d14e1c71 | 602 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
592dfbfc | 603 | list_del(&sdata->list); |
592dfbfc AA |
604 | |
605 | unregister_netdevice(sdata->dev); | |
606 | } | |
2789e629 | 607 | mutex_unlock(&local->iflist_mtx); |
592dfbfc | 608 | } |
be4fd8e5 AA |
609 | |
610 | static int netdev_notify(struct notifier_block *nb, | |
611 | unsigned long state, void *ptr) | |
612 | { | |
613 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
614 | struct ieee802154_sub_if_data *sdata; | |
615 | ||
616 | if (state != NETDEV_CHANGENAME) | |
617 | return NOTIFY_DONE; | |
618 | ||
619 | if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy) | |
620 | return NOTIFY_DONE; | |
621 | ||
622 | if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid) | |
623 | return NOTIFY_DONE; | |
624 | ||
625 | sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
626 | memcpy(sdata->name, dev->name, IFNAMSIZ); | |
627 | ||
628 | return NOTIFY_OK; | |
629 | } | |
630 | ||
631 | static struct notifier_block mac802154_netdev_notifier = { | |
632 | .notifier_call = netdev_notify, | |
633 | }; | |
634 | ||
635 | int ieee802154_iface_init(void) | |
636 | { | |
637 | return register_netdevice_notifier(&mac802154_netdev_notifier); | |
638 | } | |
639 | ||
640 | void ieee802154_iface_exit(void) | |
641 | { | |
642 | unregister_netdevice_notifier(&mac802154_netdev_notifier); | |
643 | } |