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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 | |
25 | #include <net/rtnetlink.h> | |
26 | #include <linux/nl802154.h> | |
27 | #include <net/af_ieee802154.h> | |
28 | #include <net/mac802154.h> | |
29 | #include <net/ieee802154_netdev.h> | |
5ad60d36 | 30 | #include <net/cfg802154.h> |
32bad7e3 | 31 | |
0f1556bc | 32 | #include "ieee802154_i.h" |
59cb300f | 33 | #include "driver-ops.h" |
32bad7e3 | 34 | |
9b0bb4a8 PB |
35 | static int mac802154_wpan_update_llsec(struct net_device *dev) |
36 | { | |
59d19cd7 | 37 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
9b0bb4a8 PB |
38 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
39 | int rc = 0; | |
40 | ||
41 | if (ops->llsec) { | |
42 | struct ieee802154_llsec_params params; | |
43 | int changed = 0; | |
44 | ||
036562f9 | 45 | params.pan_id = sdata->pan_id; |
9b0bb4a8 PB |
46 | changed |= IEEE802154_LLSEC_PARAM_PAN_ID; |
47 | ||
036562f9 | 48 | params.hwaddr = sdata->extended_addr; |
9b0bb4a8 PB |
49 | changed |= IEEE802154_LLSEC_PARAM_HWADDR; |
50 | ||
51 | rc = ops->llsec->set_params(dev, ¶ms, changed); | |
52 | } | |
53 | ||
54 | return rc; | |
55 | } | |
56 | ||
32bad7e3 | 57 | static int |
58 | mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
59 | { | |
59d19cd7 | 60 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
32bad7e3 | 61 | struct sockaddr_ieee802154 *sa = |
62 | (struct sockaddr_ieee802154 *)&ifr->ifr_addr; | |
63 | int err = -ENOIOCTLCMD; | |
64 | ||
036562f9 | 65 | spin_lock_bh(&sdata->mib_lock); |
32bad7e3 | 66 | |
67 | switch (cmd) { | |
68 | case SIOCGIFADDR: | |
b70ab2e8 PB |
69 | { |
70 | u16 pan_id, short_addr; | |
71 | ||
036562f9 AA |
72 | pan_id = le16_to_cpu(sdata->pan_id); |
73 | short_addr = le16_to_cpu(sdata->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: |
89 | dev_warn(&dev->dev, | |
9b13494c | 90 | "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n"); |
32bad7e3 | 91 | if (sa->family != AF_IEEE802154 || |
92 | sa->addr.addr_type != IEEE802154_ADDR_SHORT || | |
93 | sa->addr.pan_id == IEEE802154_PANID_BROADCAST || | |
94 | sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || | |
95 | sa->addr.short_addr == IEEE802154_ADDR_UNDEF) { | |
96 | err = -EINVAL; | |
97 | break; | |
98 | } | |
99 | ||
036562f9 AA |
100 | sdata->pan_id = cpu_to_le16(sa->addr.pan_id); |
101 | sdata->short_addr = cpu_to_le16(sa->addr.short_addr); | |
32bad7e3 | 102 | |
9b0bb4a8 | 103 | err = mac802154_wpan_update_llsec(dev); |
32bad7e3 | 104 | break; |
105 | } | |
106 | ||
036562f9 | 107 | spin_unlock_bh(&sdata->mib_lock); |
32bad7e3 | 108 | return err; |
109 | } | |
110 | ||
111 | static int mac802154_wpan_mac_addr(struct net_device *dev, void *p) | |
112 | { | |
776e59de | 113 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
32bad7e3 | 114 | struct sockaddr *addr = p; |
ea7053c1 | 115 | __le64 extended_addr; |
32bad7e3 | 116 | |
117 | if (netif_running(dev)) | |
118 | return -EBUSY; | |
119 | ||
ea7053c1 AA |
120 | extended_addr = ieee802154_netdev_to_extended_addr(addr->sa_data); |
121 | if (!ieee802154_is_valid_extended_addr(extended_addr)) | |
122 | return -EINVAL; | |
123 | ||
32bad7e3 | 124 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
ea7053c1 | 125 | sdata->extended_addr = extended_addr; |
776e59de | 126 | |
9b0bb4a8 | 127 | return mac802154_wpan_update_llsec(dev); |
32bad7e3 | 128 | } |
129 | ||
19ec690a AA |
130 | static int mac802154_slave_open(struct net_device *dev) |
131 | { | |
132 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
133 | struct ieee802154_sub_if_data *subif; | |
134 | struct ieee802154_local *local = sdata->local; | |
135 | int res = 0; | |
136 | ||
137 | ASSERT_RTNL(); | |
138 | ||
7c118c1a | 139 | if (sdata->vif.type == IEEE802154_DEV_WPAN) { |
19ec690a AA |
140 | mutex_lock(&sdata->local->iflist_mtx); |
141 | list_for_each_entry(subif, &sdata->local->interfaces, list) { | |
7c118c1a AA |
142 | if (subif != sdata && |
143 | subif->vif.type == sdata->vif.type && | |
0ea3da64 | 144 | ieee802154_sdata_running(subif)) { |
19ec690a AA |
145 | mutex_unlock(&sdata->local->iflist_mtx); |
146 | return -EBUSY; | |
147 | } | |
148 | } | |
149 | mutex_unlock(&sdata->local->iflist_mtx); | |
150 | } | |
151 | ||
0ea3da64 | 152 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 153 | |
74457641 | 154 | if (!local->open_count) { |
59cb300f | 155 | res = drv_start(local); |
19ec690a AA |
156 | WARN_ON(res); |
157 | if (res) | |
158 | goto err; | |
159 | } | |
160 | ||
74457641 | 161 | local->open_count++; |
19ec690a AA |
162 | netif_start_queue(dev); |
163 | return 0; | |
164 | err: | |
0ea3da64 AA |
165 | /* might already be clear but that doesn't matter */ |
166 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
167 | |
168 | return res; | |
169 | } | |
170 | ||
6ef0023a | 171 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
172 | { |
173 | int rc; | |
59d19cd7 | 174 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
59cb300f | 175 | struct ieee802154_local *local = sdata->local; |
04e850fe | 176 | struct wpan_phy *phy = sdata->local->phy; |
e462ded6 PB |
177 | |
178 | rc = mac802154_slave_open(dev); | |
179 | if (rc < 0) | |
180 | return rc; | |
181 | ||
182 | mutex_lock(&phy->pib_lock); | |
183 | ||
38130c31 AA |
184 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { |
185 | rc = drv_set_promiscuous_mode(local, sdata->promisuous_mode); | |
186 | if (rc < 0) | |
187 | goto out; | |
188 | } | |
189 | ||
776e59de | 190 | if (local->hw.flags & IEEE802154_HW_AFILT) { |
50c79075 AA |
191 | rc = drv_set_pan_id(local, sdata->pan_id); |
192 | if (rc < 0) | |
193 | goto out; | |
194 | ||
776e59de AA |
195 | rc = drv_set_extended_addr(local, sdata->extended_addr); |
196 | if (rc < 0) | |
197 | goto out; | |
78b4bad1 AA |
198 | |
199 | rc = drv_set_short_addr(local, sdata->short_addr); | |
200 | if (rc < 0) | |
201 | goto out; | |
776e59de AA |
202 | } |
203 | ||
a543c598 | 204 | if (local->hw.flags & IEEE802154_HW_LBT) { |
59cb300f | 205 | rc = drv_set_lbt_mode(local, sdata->mac_params.lbt); |
e462ded6 PB |
206 | if (rc < 0) |
207 | goto out; | |
208 | } | |
209 | ||
a543c598 | 210 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { |
59cb300f AA |
211 | rc = drv_set_csma_params(local, sdata->mac_params.min_be, |
212 | sdata->mac_params.max_be, | |
213 | sdata->mac_params.csma_retries); | |
e462ded6 PB |
214 | if (rc < 0) |
215 | goto out; | |
216 | } | |
217 | ||
a543c598 | 218 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { |
59cb300f AA |
219 | rc = drv_set_max_frame_retries(local, |
220 | sdata->mac_params.frame_retries); | |
e462ded6 PB |
221 | if (rc < 0) |
222 | goto out; | |
223 | } | |
224 | ||
225 | mutex_unlock(&phy->pib_lock); | |
226 | return 0; | |
227 | ||
228 | out: | |
229 | mutex_unlock(&phy->pib_lock); | |
230 | return rc; | |
231 | } | |
232 | ||
19ec690a AA |
233 | static int mac802154_slave_close(struct net_device *dev) |
234 | { | |
235 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
236 | struct ieee802154_local *local = sdata->local; | |
237 | ||
238 | ASSERT_RTNL(); | |
239 | ||
240 | netif_stop_queue(dev); | |
74457641 | 241 | local->open_count--; |
19ec690a | 242 | |
0ea3da64 | 243 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 244 | |
74457641 | 245 | if (!local->open_count) |
59cb300f | 246 | drv_stop(local); |
19ec690a AA |
247 | |
248 | return 0; | |
249 | } | |
250 | ||
036562f9 | 251 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
252 | struct ieee802154_hdr *hdr, |
253 | const struct ieee802154_mac_cb *cb) | |
254 | { | |
255 | struct ieee802154_llsec_params params; | |
256 | u8 level; | |
257 | ||
036562f9 | 258 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
259 | |
260 | if (!params.enabled && cb->secen_override && cb->secen) | |
261 | return -EINVAL; | |
262 | if (!params.enabled || | |
263 | (cb->secen_override && !cb->secen) || | |
264 | !params.out_level) | |
265 | return 0; | |
266 | if (cb->seclevel_override && !cb->seclevel) | |
267 | return -EINVAL; | |
268 | ||
269 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
270 | ||
271 | hdr->fc.security_enabled = 1; | |
272 | hdr->sec.level = level; | |
273 | hdr->sec.key_id_mode = params.out_key.mode; | |
274 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
275 | hdr->sec.short_src = params.out_key.short_source; | |
276 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
277 | hdr->sec.extended_src = params.out_key.extended_source; | |
278 | hdr->sec.key_id = params.out_key.id; | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
32bad7e3 | 283 | static int mac802154_header_create(struct sk_buff *skb, |
284 | struct net_device *dev, | |
285 | unsigned short type, | |
e6278d92 PB |
286 | const void *daddr, |
287 | const void *saddr, | |
32bad7e3 | 288 | unsigned len) |
289 | { | |
e6278d92 | 290 | struct ieee802154_hdr hdr; |
59d19cd7 | 291 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
32edc40a | 292 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 293 | int hlen; |
32bad7e3 | 294 | |
295 | if (!daddr) | |
296 | return -EINVAL; | |
297 | ||
e6278d92 | 298 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
299 | hdr.fc.type = cb->type; |
300 | hdr.fc.security_enabled = cb->secen; | |
301 | hdr.fc.ack_request = cb->ackreq; | |
302 | hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev); | |
32bad7e3 | 303 | |
036562f9 | 304 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
305 | return -EINVAL; |
306 | ||
32bad7e3 | 307 | if (!saddr) { |
036562f9 | 308 | spin_lock_bh(&sdata->mib_lock); |
32bad7e3 | 309 | |
036562f9 AA |
310 | if (sdata->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
311 | sdata->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
312 | sdata->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 313 | hdr.source.mode = IEEE802154_ADDR_LONG; |
036562f9 | 314 | hdr.source.extended_addr = sdata->extended_addr; |
32bad7e3 | 315 | } else { |
e6278d92 | 316 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
036562f9 | 317 | hdr.source.short_addr = sdata->short_addr; |
32bad7e3 | 318 | } |
319 | ||
036562f9 | 320 | hdr.source.pan_id = sdata->pan_id; |
32bad7e3 | 321 | |
036562f9 | 322 | spin_unlock_bh(&sdata->mib_lock); |
e6278d92 PB |
323 | } else { |
324 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 325 | } |
326 | ||
e6278d92 | 327 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 328 | |
e6278d92 PB |
329 | hlen = ieee802154_hdr_push(skb, &hdr); |
330 | if (hlen < 0) | |
331 | return -EINVAL; | |
32bad7e3 | 332 | |
3e69162e | 333 | skb_reset_mac_header(skb); |
e6278d92 | 334 | skb->mac_len = hlen; |
32bad7e3 | 335 | |
8c84296f | 336 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
337 | return -EMSGSIZE; |
338 | ||
e6278d92 | 339 | return hlen; |
32bad7e3 | 340 | } |
341 | ||
342 | static int | |
343 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
344 | { | |
e6278d92 PB |
345 | struct ieee802154_hdr hdr; |
346 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 347 | |
e6278d92 PB |
348 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
349 | pr_debug("malformed packet\n"); | |
350 | return 0; | |
32bad7e3 | 351 | } |
352 | ||
e6278d92 PB |
353 | *addr = hdr.source; |
354 | return sizeof(*addr); | |
32bad7e3 | 355 | } |
356 | ||
32bad7e3 | 357 | static struct header_ops mac802154_header_ops = { |
358 | .create = mac802154_header_create, | |
359 | .parse = mac802154_header_parse, | |
360 | }; | |
361 | ||
362 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 363 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 364 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 365 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 366 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
367 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
368 | }; | |
369 | ||
b9ff77e5 | 370 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 371 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
372 | .ndo_stop = mac802154_slave_close, |
373 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
374 | }; | |
375 | ||
f30be4d5 PB |
376 | static void mac802154_wpan_free(struct net_device *dev) |
377 | { | |
59d19cd7 | 378 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 379 | |
036562f9 | 380 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
381 | |
382 | free_netdev(dev); | |
383 | } | |
384 | ||
d5ae67ba | 385 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 386 | { |
32bad7e3 | 387 | dev->addr_len = IEEE802154_ADDR_LEN; |
388 | memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN); | |
389 | ||
390 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 391 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 392 | dev->mtu = IEEE802154_MTU; |
e937f583 | 393 | dev->tx_queue_len = 300; |
32bad7e3 | 394 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 395 | } |
32bad7e3 | 396 | |
d5ae67ba AA |
397 | static int |
398 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, int type) | |
399 | { | |
400 | /* set some type-dependent values */ | |
7c118c1a | 401 | sdata->vif.type = type; |
32bad7e3 | 402 | |
036562f9 AA |
403 | get_random_bytes(&sdata->bsn, 1); |
404 | get_random_bytes(&sdata->dsn, 1); | |
32bad7e3 | 405 | |
e462ded6 | 406 | /* defaults per 802.15.4-2011 */ |
036562f9 AA |
407 | sdata->mac_params.min_be = 3; |
408 | sdata->mac_params.max_be = 5; | |
409 | sdata->mac_params.csma_retries = 4; | |
410 | /* for compatibility, actual default is 3 */ | |
411 | sdata->mac_params.frame_retries = -1; | |
e462ded6 | 412 | |
036562f9 AA |
413 | sdata->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
414 | sdata->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 415 | |
d5ae67ba AA |
416 | switch (type) { |
417 | case IEEE802154_DEV_WPAN: | |
418 | sdata->dev->header_ops = &mac802154_header_ops; | |
419 | sdata->dev->destructor = mac802154_wpan_free; | |
420 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
421 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
422 | sdata->promisuous_mode = false; | |
986a8abf | 423 | |
d5ae67ba AA |
424 | spin_lock_init(&sdata->mib_lock); |
425 | mutex_init(&sdata->sec_mtx); | |
986a8abf | 426 | |
d5ae67ba AA |
427 | mac802154_llsec_init(&sdata->sec); |
428 | break; | |
429 | case IEEE802154_DEV_MONITOR: | |
430 | sdata->dev->destructor = free_netdev; | |
431 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
d5ae67ba AA |
432 | sdata->promisuous_mode = true; |
433 | break; | |
434 | default: | |
435 | BUG(); | |
436 | } | |
986a8abf AA |
437 | |
438 | return 0; | |
439 | } | |
440 | ||
441 | struct net_device * | |
442 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
443 | struct wpan_dev **new_wpan_dev, int type) | |
444 | { | |
d5ae67ba AA |
445 | struct net_device *ndev = NULL; |
446 | struct ieee802154_sub_if_data *sdata = NULL; | |
447 | int ret = -ENOMEM; | |
448 | ||
449 | ASSERT_RTNL(); | |
450 | ||
7c118c1a AA |
451 | ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name, |
452 | NET_NAME_UNKNOWN, ieee802154_if_setup); | |
d5ae67ba AA |
453 | if (!ndev) |
454 | return ERR_PTR(-ENOMEM); | |
455 | ||
456 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
457 | ||
458 | ret = dev_alloc_name(ndev, ndev->name); | |
459 | if (ret < 0) | |
460 | goto err; | |
986a8abf AA |
461 | |
462 | switch (type) { | |
986a8abf | 463 | case IEEE802154_DEV_WPAN: |
d5ae67ba | 464 | ndev->type = ARPHRD_IEEE802154; |
986a8abf | 465 | break; |
d5ae67ba AA |
466 | case IEEE802154_DEV_MONITOR: |
467 | ndev->type = ARPHRD_IEEE802154_MONITOR; | |
986a8abf | 468 | break; |
d5ae67ba AA |
469 | default: |
470 | ret = -EINVAL; | |
471 | goto err; | |
986a8abf | 472 | } |
d5ae67ba AA |
473 | |
474 | /* TODO check this */ | |
475 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
476 | sdata = netdev_priv(ndev); | |
477 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
478 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
479 | sdata->dev = ndev; | |
480 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
481 | sdata->local = local; | |
482 | ||
483 | /* setup type-dependent data */ | |
484 | ret = ieee802154_setup_sdata(sdata, type); | |
485 | if (ret) | |
986a8abf AA |
486 | goto err; |
487 | ||
d5ae67ba AA |
488 | if (ndev) { |
489 | ret = register_netdevice(ndev); | |
490 | if (ret < 0) | |
491 | goto err; | |
492 | } | |
493 | ||
494 | mutex_lock(&local->iflist_mtx); | |
495 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
496 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 497 | |
d5ae67ba AA |
498 | if (new_wpan_dev) |
499 | *new_wpan_dev = &sdata->wpan_dev; | |
500 | ||
501 | return ndev; | |
986a8abf | 502 | |
986a8abf | 503 | err: |
d5ae67ba AA |
504 | free_netdev(ndev); |
505 | return ERR_PTR(ret); | |
986a8abf AA |
506 | } |
507 | ||
b210b187 AA |
508 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
509 | { | |
510 | ASSERT_RTNL(); | |
511 | ||
512 | mutex_lock(&sdata->local->iflist_mtx); | |
513 | list_del_rcu(&sdata->list); | |
514 | mutex_unlock(&sdata->local->iflist_mtx); | |
515 | ||
516 | synchronize_rcu(); | |
517 | unregister_netdevice(sdata->dev); | |
518 | } |