Commit | Line | Data |
---|---|---|
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); | |
140 | struct ieee802154_sub_if_data *subif; | |
141 | struct ieee802154_local *local = sdata->local; | |
142 | int res = 0; | |
143 | ||
144 | ASSERT_RTNL(); | |
145 | ||
944742a3 | 146 | if (sdata->vif.type == NL802154_IFTYPE_NODE) { |
19ec690a AA |
147 | mutex_lock(&sdata->local->iflist_mtx); |
148 | list_for_each_entry(subif, &sdata->local->interfaces, list) { | |
7c118c1a AA |
149 | if (subif != sdata && |
150 | subif->vif.type == sdata->vif.type && | |
0ea3da64 | 151 | ieee802154_sdata_running(subif)) { |
19ec690a AA |
152 | mutex_unlock(&sdata->local->iflist_mtx); |
153 | return -EBUSY; | |
154 | } | |
155 | } | |
156 | mutex_unlock(&sdata->local->iflist_mtx); | |
157 | } | |
158 | ||
0ea3da64 | 159 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 160 | |
74457641 | 161 | if (!local->open_count) { |
59cb300f | 162 | res = drv_start(local); |
19ec690a AA |
163 | WARN_ON(res); |
164 | if (res) | |
165 | goto err; | |
166 | } | |
167 | ||
74457641 | 168 | local->open_count++; |
19ec690a AA |
169 | netif_start_queue(dev); |
170 | return 0; | |
171 | err: | |
0ea3da64 AA |
172 | /* might already be clear but that doesn't matter */ |
173 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
19ec690a AA |
174 | |
175 | return res; | |
176 | } | |
177 | ||
6ef0023a | 178 | static int mac802154_wpan_open(struct net_device *dev) |
e462ded6 PB |
179 | { |
180 | int rc; | |
59d19cd7 | 181 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
59cb300f | 182 | struct ieee802154_local *local = sdata->local; |
863e88f2 | 183 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
04e850fe | 184 | struct wpan_phy *phy = sdata->local->phy; |
e462ded6 PB |
185 | |
186 | rc = mac802154_slave_open(dev); | |
187 | if (rc < 0) | |
188 | return rc; | |
189 | ||
190 | mutex_lock(&phy->pib_lock); | |
191 | ||
38130c31 | 192 | if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { |
863e88f2 AA |
193 | rc = drv_set_promiscuous_mode(local, |
194 | wpan_dev->promiscuous_mode); | |
38130c31 AA |
195 | if (rc < 0) |
196 | goto out; | |
197 | } | |
198 | ||
776e59de | 199 | if (local->hw.flags & IEEE802154_HW_AFILT) { |
863e88f2 | 200 | rc = drv_set_pan_id(local, wpan_dev->pan_id); |
50c79075 AA |
201 | if (rc < 0) |
202 | goto out; | |
203 | ||
863e88f2 | 204 | rc = drv_set_extended_addr(local, wpan_dev->extended_addr); |
776e59de AA |
205 | if (rc < 0) |
206 | goto out; | |
78b4bad1 | 207 | |
863e88f2 | 208 | rc = drv_set_short_addr(local, wpan_dev->short_addr); |
78b4bad1 AA |
209 | if (rc < 0) |
210 | goto out; | |
776e59de AA |
211 | } |
212 | ||
a543c598 | 213 | if (local->hw.flags & IEEE802154_HW_LBT) { |
5fb3f026 | 214 | rc = drv_set_lbt_mode(local, wpan_dev->lbt); |
e462ded6 PB |
215 | if (rc < 0) |
216 | goto out; | |
217 | } | |
218 | ||
a543c598 | 219 | if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) { |
5fb3f026 AA |
220 | rc = drv_set_csma_params(local, wpan_dev->min_be, |
221 | wpan_dev->max_be, | |
222 | wpan_dev->csma_retries); | |
e462ded6 PB |
223 | if (rc < 0) |
224 | goto out; | |
225 | } | |
226 | ||
a543c598 | 227 | if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) { |
5fb3f026 | 228 | rc = drv_set_max_frame_retries(local, wpan_dev->frame_retries); |
e462ded6 PB |
229 | if (rc < 0) |
230 | goto out; | |
231 | } | |
232 | ||
233 | mutex_unlock(&phy->pib_lock); | |
234 | return 0; | |
235 | ||
236 | out: | |
237 | mutex_unlock(&phy->pib_lock); | |
238 | return rc; | |
239 | } | |
240 | ||
19ec690a AA |
241 | static int mac802154_slave_close(struct net_device *dev) |
242 | { | |
243 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
244 | struct ieee802154_local *local = sdata->local; | |
245 | ||
246 | ASSERT_RTNL(); | |
247 | ||
61f2dcba AA |
248 | hrtimer_cancel(&local->ifs_timer); |
249 | ||
19ec690a | 250 | netif_stop_queue(dev); |
74457641 | 251 | local->open_count--; |
19ec690a | 252 | |
0ea3da64 | 253 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
19ec690a | 254 | |
74457641 | 255 | if (!local->open_count) |
59cb300f | 256 | drv_stop(local); |
19ec690a AA |
257 | |
258 | return 0; | |
259 | } | |
260 | ||
036562f9 | 261 | static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata, |
f30be4d5 PB |
262 | struct ieee802154_hdr *hdr, |
263 | const struct ieee802154_mac_cb *cb) | |
264 | { | |
265 | struct ieee802154_llsec_params params; | |
266 | u8 level; | |
267 | ||
036562f9 | 268 | mac802154_llsec_get_params(&sdata->sec, ¶ms); |
f30be4d5 PB |
269 | |
270 | if (!params.enabled && cb->secen_override && cb->secen) | |
271 | return -EINVAL; | |
272 | if (!params.enabled || | |
273 | (cb->secen_override && !cb->secen) || | |
274 | !params.out_level) | |
275 | return 0; | |
276 | if (cb->seclevel_override && !cb->seclevel) | |
277 | return -EINVAL; | |
278 | ||
279 | level = cb->seclevel_override ? cb->seclevel : params.out_level; | |
280 | ||
281 | hdr->fc.security_enabled = 1; | |
282 | hdr->sec.level = level; | |
283 | hdr->sec.key_id_mode = params.out_key.mode; | |
284 | if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX) | |
285 | hdr->sec.short_src = params.out_key.short_source; | |
286 | else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX) | |
287 | hdr->sec.extended_src = params.out_key.extended_source; | |
288 | hdr->sec.key_id = params.out_key.id; | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
32bad7e3 | 293 | static int mac802154_header_create(struct sk_buff *skb, |
294 | struct net_device *dev, | |
295 | unsigned short type, | |
e6278d92 PB |
296 | const void *daddr, |
297 | const void *saddr, | |
32bad7e3 | 298 | unsigned len) |
299 | { | |
e6278d92 | 300 | struct ieee802154_hdr hdr; |
59d19cd7 | 301 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
863e88f2 | 302 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
32edc40a | 303 | struct ieee802154_mac_cb *cb = mac_cb(skb); |
e6278d92 | 304 | int hlen; |
32bad7e3 | 305 | |
306 | if (!daddr) | |
307 | return -EINVAL; | |
308 | ||
e6278d92 | 309 | memset(&hdr.fc, 0, sizeof(hdr.fc)); |
32edc40a PB |
310 | hdr.fc.type = cb->type; |
311 | hdr.fc.security_enabled = cb->secen; | |
312 | hdr.fc.ack_request = cb->ackreq; | |
313 | hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev); | |
32bad7e3 | 314 | |
036562f9 | 315 | if (mac802154_set_header_security(sdata, &hdr, cb) < 0) |
f30be4d5 PB |
316 | return -EINVAL; |
317 | ||
32bad7e3 | 318 | if (!saddr) { |
036562f9 | 319 | spin_lock_bh(&sdata->mib_lock); |
32bad7e3 | 320 | |
863e88f2 AA |
321 | if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) || |
322 | wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) || | |
323 | wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
e6278d92 | 324 | hdr.source.mode = IEEE802154_ADDR_LONG; |
863e88f2 | 325 | hdr.source.extended_addr = wpan_dev->extended_addr; |
32bad7e3 | 326 | } else { |
e6278d92 | 327 | hdr.source.mode = IEEE802154_ADDR_SHORT; |
863e88f2 | 328 | hdr.source.short_addr = wpan_dev->short_addr; |
32bad7e3 | 329 | } |
330 | ||
863e88f2 | 331 | hdr.source.pan_id = wpan_dev->pan_id; |
32bad7e3 | 332 | |
036562f9 | 333 | spin_unlock_bh(&sdata->mib_lock); |
e6278d92 PB |
334 | } else { |
335 | hdr.source = *(const struct ieee802154_addr *)saddr; | |
32bad7e3 | 336 | } |
337 | ||
e6278d92 | 338 | hdr.dest = *(const struct ieee802154_addr *)daddr; |
32bad7e3 | 339 | |
e6278d92 PB |
340 | hlen = ieee802154_hdr_push(skb, &hdr); |
341 | if (hlen < 0) | |
342 | return -EINVAL; | |
32bad7e3 | 343 | |
3e69162e | 344 | skb_reset_mac_header(skb); |
e6278d92 | 345 | skb->mac_len = hlen; |
32bad7e3 | 346 | |
8c84296f | 347 | if (len > ieee802154_max_payload(&hdr)) |
d1d7358e PB |
348 | return -EMSGSIZE; |
349 | ||
e6278d92 | 350 | return hlen; |
32bad7e3 | 351 | } |
352 | ||
353 | static int | |
354 | mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr) | |
355 | { | |
e6278d92 PB |
356 | struct ieee802154_hdr hdr; |
357 | struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr; | |
32bad7e3 | 358 | |
e6278d92 PB |
359 | if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) { |
360 | pr_debug("malformed packet\n"); | |
361 | return 0; | |
32bad7e3 | 362 | } |
363 | ||
e6278d92 PB |
364 | *addr = hdr.source; |
365 | return sizeof(*addr); | |
32bad7e3 | 366 | } |
367 | ||
32bad7e3 | 368 | static struct header_ops mac802154_header_ops = { |
369 | .create = mac802154_header_create, | |
370 | .parse = mac802154_header_parse, | |
371 | }; | |
372 | ||
373 | static const struct net_device_ops mac802154_wpan_ops = { | |
e462ded6 | 374 | .ndo_open = mac802154_wpan_open, |
32bad7e3 | 375 | .ndo_stop = mac802154_slave_close, |
e5e584fc | 376 | .ndo_start_xmit = ieee802154_subif_start_xmit, |
32bad7e3 | 377 | .ndo_do_ioctl = mac802154_wpan_ioctl, |
378 | .ndo_set_mac_address = mac802154_wpan_mac_addr, | |
379 | }; | |
380 | ||
b9ff77e5 | 381 | static const struct net_device_ops mac802154_monitor_ops = { |
38130c31 | 382 | .ndo_open = mac802154_wpan_open, |
b9ff77e5 AA |
383 | .ndo_stop = mac802154_slave_close, |
384 | .ndo_start_xmit = ieee802154_monitor_start_xmit, | |
385 | }; | |
386 | ||
f30be4d5 PB |
387 | static void mac802154_wpan_free(struct net_device *dev) |
388 | { | |
59d19cd7 | 389 | struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); |
f30be4d5 | 390 | |
036562f9 | 391 | mac802154_llsec_destroy(&sdata->sec); |
f30be4d5 PB |
392 | |
393 | free_netdev(dev); | |
394 | } | |
395 | ||
d5ae67ba | 396 | static void ieee802154_if_setup(struct net_device *dev) |
32bad7e3 | 397 | { |
e57a8946 AA |
398 | dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN; |
399 | memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN); | |
32bad7e3 | 400 | |
401 | dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN; | |
f30be4d5 | 402 | dev->needed_tailroom = 2 + 16; /* FCS + MIC */ |
32bad7e3 | 403 | dev->mtu = IEEE802154_MTU; |
e937f583 | 404 | dev->tx_queue_len = 300; |
32bad7e3 | 405 | dev->flags = IFF_NOARP | IFF_BROADCAST; |
d5ae67ba | 406 | } |
32bad7e3 | 407 | |
d5ae67ba | 408 | static int |
944742a3 AA |
409 | ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, |
410 | enum nl802154_iftype type) | |
d5ae67ba | 411 | { |
863e88f2 AA |
412 | struct wpan_dev *wpan_dev = &sdata->wpan_dev; |
413 | ||
d5ae67ba | 414 | /* set some type-dependent values */ |
7c118c1a | 415 | sdata->vif.type = type; |
190ac1ca | 416 | sdata->wpan_dev.iftype = type; |
32bad7e3 | 417 | |
863e88f2 AA |
418 | get_random_bytes(&wpan_dev->bsn, 1); |
419 | get_random_bytes(&wpan_dev->dsn, 1); | |
32bad7e3 | 420 | |
e462ded6 | 421 | /* defaults per 802.15.4-2011 */ |
5fb3f026 AA |
422 | wpan_dev->min_be = 3; |
423 | wpan_dev->max_be = 5; | |
424 | wpan_dev->csma_retries = 4; | |
036562f9 | 425 | /* for compatibility, actual default is 3 */ |
5fb3f026 | 426 | wpan_dev->frame_retries = -1; |
e462ded6 | 427 | |
863e88f2 AA |
428 | wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); |
429 | wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); | |
f30be4d5 | 430 | |
d5ae67ba | 431 | switch (type) { |
944742a3 | 432 | case NL802154_IFTYPE_NODE: |
b03c9ccc AA |
433 | ieee802154_be64_to_le64(&wpan_dev->extended_addr, |
434 | sdata->dev->dev_addr); | |
435 | ||
d5ae67ba AA |
436 | sdata->dev->header_ops = &mac802154_header_ops; |
437 | sdata->dev->destructor = mac802154_wpan_free; | |
438 | sdata->dev->netdev_ops = &mac802154_wpan_ops; | |
439 | sdata->dev->ml_priv = &mac802154_mlme_wpan; | |
863e88f2 | 440 | wpan_dev->promiscuous_mode = false; |
986a8abf | 441 | |
d5ae67ba AA |
442 | spin_lock_init(&sdata->mib_lock); |
443 | mutex_init(&sdata->sec_mtx); | |
986a8abf | 444 | |
d5ae67ba AA |
445 | mac802154_llsec_init(&sdata->sec); |
446 | break; | |
944742a3 | 447 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba AA |
448 | sdata->dev->destructor = free_netdev; |
449 | sdata->dev->netdev_ops = &mac802154_monitor_ops; | |
863e88f2 | 450 | wpan_dev->promiscuous_mode = true; |
d5ae67ba AA |
451 | break; |
452 | default: | |
453 | BUG(); | |
454 | } | |
986a8abf AA |
455 | |
456 | return 0; | |
457 | } | |
458 | ||
459 | struct net_device * | |
460 | ieee802154_if_add(struct ieee802154_local *local, const char *name, | |
0e57547e | 461 | enum nl802154_iftype type, __le64 extended_addr) |
986a8abf | 462 | { |
d5ae67ba AA |
463 | struct net_device *ndev = NULL; |
464 | struct ieee802154_sub_if_data *sdata = NULL; | |
465 | int ret = -ENOMEM; | |
466 | ||
467 | ASSERT_RTNL(); | |
468 | ||
7c118c1a AA |
469 | ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name, |
470 | NET_NAME_UNKNOWN, ieee802154_if_setup); | |
d5ae67ba AA |
471 | if (!ndev) |
472 | return ERR_PTR(-ENOMEM); | |
473 | ||
474 | ndev->needed_headroom = local->hw.extra_tx_headroom; | |
475 | ||
476 | ret = dev_alloc_name(ndev, ndev->name); | |
477 | if (ret < 0) | |
478 | goto err; | |
986a8abf | 479 | |
0e57547e AA |
480 | ieee802154_le64_to_be64(ndev->perm_addr, |
481 | &local->hw.phy->perm_extended_addr); | |
986a8abf | 482 | switch (type) { |
944742a3 | 483 | case NL802154_IFTYPE_NODE: |
d5ae67ba | 484 | ndev->type = ARPHRD_IEEE802154; |
0e57547e AA |
485 | if (ieee802154_is_valid_extended_addr(extended_addr)) |
486 | ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr); | |
487 | else | |
488 | memcpy(ndev->dev_addr, ndev->perm_addr, | |
489 | IEEE802154_EXTENDED_ADDR_LEN); | |
986a8abf | 490 | break; |
944742a3 | 491 | case NL802154_IFTYPE_MONITOR: |
d5ae67ba | 492 | ndev->type = ARPHRD_IEEE802154_MONITOR; |
986a8abf | 493 | break; |
d5ae67ba AA |
494 | default: |
495 | ret = -EINVAL; | |
496 | goto err; | |
986a8abf | 497 | } |
d5ae67ba AA |
498 | |
499 | /* TODO check this */ | |
500 | SET_NETDEV_DEV(ndev, &local->phy->dev); | |
501 | sdata = netdev_priv(ndev); | |
502 | ndev->ieee802154_ptr = &sdata->wpan_dev; | |
503 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
504 | sdata->dev = ndev; | |
505 | sdata->wpan_dev.wpan_phy = local->hw.phy; | |
506 | sdata->local = local; | |
507 | ||
508 | /* setup type-dependent data */ | |
509 | ret = ieee802154_setup_sdata(sdata, type); | |
510 | if (ret) | |
986a8abf AA |
511 | goto err; |
512 | ||
473f3766 VB |
513 | ret = register_netdevice(ndev); |
514 | if (ret < 0) | |
515 | goto err; | |
d5ae67ba AA |
516 | |
517 | mutex_lock(&local->iflist_mtx); | |
518 | list_add_tail_rcu(&sdata->list, &local->interfaces); | |
519 | mutex_unlock(&local->iflist_mtx); | |
986a8abf | 520 | |
d5ae67ba | 521 | return ndev; |
986a8abf | 522 | |
986a8abf | 523 | err: |
d5ae67ba AA |
524 | free_netdev(ndev); |
525 | return ERR_PTR(ret); | |
986a8abf AA |
526 | } |
527 | ||
b210b187 AA |
528 | void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata) |
529 | { | |
530 | ASSERT_RTNL(); | |
531 | ||
532 | mutex_lock(&sdata->local->iflist_mtx); | |
533 | list_del_rcu(&sdata->list); | |
534 | mutex_unlock(&sdata->local->iflist_mtx); | |
535 | ||
536 | synchronize_rcu(); | |
537 | unregister_netdevice(sdata->dev); | |
538 | } | |
592dfbfc AA |
539 | |
540 | void ieee802154_remove_interfaces(struct ieee802154_local *local) | |
541 | { | |
d14e1c71 | 542 | struct ieee802154_sub_if_data *sdata, *tmp; |
592dfbfc | 543 | |
2789e629 | 544 | mutex_lock(&local->iflist_mtx); |
d14e1c71 | 545 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
592dfbfc | 546 | list_del(&sdata->list); |
592dfbfc AA |
547 | |
548 | unregister_netdevice(sdata->dev); | |
549 | } | |
2789e629 | 550 | mutex_unlock(&local->iflist_mtx); |
592dfbfc | 551 | } |
be4fd8e5 AA |
552 | |
553 | static int netdev_notify(struct notifier_block *nb, | |
554 | unsigned long state, void *ptr) | |
555 | { | |
556 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
557 | struct ieee802154_sub_if_data *sdata; | |
558 | ||
559 | if (state != NETDEV_CHANGENAME) | |
560 | return NOTIFY_DONE; | |
561 | ||
562 | if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy) | |
563 | return NOTIFY_DONE; | |
564 | ||
565 | if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid) | |
566 | return NOTIFY_DONE; | |
567 | ||
568 | sdata = IEEE802154_DEV_TO_SUB_IF(dev); | |
569 | memcpy(sdata->name, dev->name, IFNAMSIZ); | |
570 | ||
571 | return NOTIFY_OK; | |
572 | } | |
573 | ||
574 | static struct notifier_block mac802154_netdev_notifier = { | |
575 | .notifier_call = netdev_notify, | |
576 | }; | |
577 | ||
578 | int ieee802154_iface_init(void) | |
579 | { | |
580 | return register_netdevice_notifier(&mac802154_netdev_notifier); | |
581 | } | |
582 | ||
583 | void ieee802154_iface_exit(void) | |
584 | { | |
585 | unregister_netdevice_notifier(&mac802154_netdev_notifier); | |
586 | } |