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Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelv...
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/list.h>
11 #include <linux/if_ether.h>
12 #include <linux/ieee80211.h>
13 #include <linux/nl80211.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/netlink.h>
16 #include <linux/etherdevice.h>
17 #include <net/genetlink.h>
18 #include <net/cfg80211.h>
19 #include "core.h"
20 #include "nl80211.h"
21 #include "reg.h"
22
23 /* the netlink family */
24 static struct genl_family nl80211_fam = {
25 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
26 .name = "nl80211", /* have users key off the name instead */
27 .hdrsize = 0, /* no private header */
28 .version = 1, /* no particular meaning now */
29 .maxattr = NL80211_ATTR_MAX,
30 };
31
32 /* internal helper: get drv and dev */
33 static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
34 struct cfg80211_registered_device **drv,
35 struct net_device **dev)
36 {
37 int ifindex;
38
39 if (!attrs[NL80211_ATTR_IFINDEX])
40 return -EINVAL;
41
42 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
43 *dev = dev_get_by_index(&init_net, ifindex);
44 if (!*dev)
45 return -ENODEV;
46
47 *drv = cfg80211_get_dev_from_ifindex(ifindex);
48 if (IS_ERR(*drv)) {
49 dev_put(*dev);
50 return PTR_ERR(*drv);
51 }
52
53 return 0;
54 }
55
56 /* policy for the attributes */
57 static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
58 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
59 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
60 .len = 20-1 },
61 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
62 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
63 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
64 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
65 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
66 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
67 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
68
69 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
70 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
71 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
72
73 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
74
75 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
76 .len = WLAN_MAX_KEY_LEN },
77 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
78 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
79 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
80 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
81
82 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
83 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
84 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
85 .len = IEEE80211_MAX_DATA_LEN },
86 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
87 .len = IEEE80211_MAX_DATA_LEN },
88 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
89 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
90 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
91 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
92 .len = NL80211_MAX_SUPP_RATES },
93 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
94 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
95 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
96 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
97 .len = IEEE80211_MAX_MESH_ID_LEN },
98 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
99
100 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
101 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
102
103 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
104 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
105 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
106 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
107 .len = NL80211_MAX_SUPP_RATES },
108
109 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
110
111 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
112 .len = NL80211_HT_CAPABILITY_LEN },
113
114 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
115 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
116 .len = IEEE80211_MAX_DATA_LEN },
117 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
118 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
119
120 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
121 .len = IEEE80211_MAX_SSID_LEN },
122 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
123 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
124 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
125 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
126 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
127 [NL80211_ATTR_STA_FLAGS2] = {
128 .len = sizeof(struct nl80211_sta_flag_update),
129 },
130 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
131 };
132
133 /* IE validation */
134 static bool is_valid_ie_attr(const struct nlattr *attr)
135 {
136 const u8 *pos;
137 int len;
138
139 if (!attr)
140 return true;
141
142 pos = nla_data(attr);
143 len = nla_len(attr);
144
145 while (len) {
146 u8 elemlen;
147
148 if (len < 2)
149 return false;
150 len -= 2;
151
152 elemlen = pos[1];
153 if (elemlen > len)
154 return false;
155
156 len -= elemlen;
157 pos += 2 + elemlen;
158 }
159
160 return true;
161 }
162
163 /* message building helper */
164 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
165 int flags, u8 cmd)
166 {
167 /* since there is no private header just add the generic one */
168 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
169 }
170
171 static int nl80211_msg_put_channel(struct sk_buff *msg,
172 struct ieee80211_channel *chan)
173 {
174 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
175 chan->center_freq);
176
177 if (chan->flags & IEEE80211_CHAN_DISABLED)
178 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
179 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
180 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
181 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
182 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
183 if (chan->flags & IEEE80211_CHAN_RADAR)
184 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
185
186 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
187 DBM_TO_MBM(chan->max_power));
188
189 return 0;
190
191 nla_put_failure:
192 return -ENOBUFS;
193 }
194
195 /* netlink command implementations */
196
197 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
198 struct cfg80211_registered_device *dev)
199 {
200 void *hdr;
201 struct nlattr *nl_bands, *nl_band;
202 struct nlattr *nl_freqs, *nl_freq;
203 struct nlattr *nl_rates, *nl_rate;
204 struct nlattr *nl_modes;
205 struct nlattr *nl_cmds;
206 enum ieee80211_band band;
207 struct ieee80211_channel *chan;
208 struct ieee80211_rate *rate;
209 int i;
210 u16 ifmodes = dev->wiphy.interface_modes;
211
212 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
213 if (!hdr)
214 return -1;
215
216 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
217 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
218
219 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
220 dev->wiphy.retry_short);
221 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
222 dev->wiphy.retry_long);
223 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
224 dev->wiphy.frag_threshold);
225 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
226 dev->wiphy.rts_threshold);
227
228 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
229 dev->wiphy.max_scan_ssids);
230 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
231 dev->wiphy.max_scan_ie_len);
232
233 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
234 sizeof(u32) * dev->wiphy.n_cipher_suites,
235 dev->wiphy.cipher_suites);
236
237 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
238 if (!nl_modes)
239 goto nla_put_failure;
240
241 i = 0;
242 while (ifmodes) {
243 if (ifmodes & 1)
244 NLA_PUT_FLAG(msg, i);
245 ifmodes >>= 1;
246 i++;
247 }
248
249 nla_nest_end(msg, nl_modes);
250
251 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
252 if (!nl_bands)
253 goto nla_put_failure;
254
255 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
256 if (!dev->wiphy.bands[band])
257 continue;
258
259 nl_band = nla_nest_start(msg, band);
260 if (!nl_band)
261 goto nla_put_failure;
262
263 /* add HT info */
264 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
265 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
266 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
267 &dev->wiphy.bands[band]->ht_cap.mcs);
268 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
269 dev->wiphy.bands[band]->ht_cap.cap);
270 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
271 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
272 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
273 dev->wiphy.bands[band]->ht_cap.ampdu_density);
274 }
275
276 /* add frequencies */
277 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
278 if (!nl_freqs)
279 goto nla_put_failure;
280
281 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
282 nl_freq = nla_nest_start(msg, i);
283 if (!nl_freq)
284 goto nla_put_failure;
285
286 chan = &dev->wiphy.bands[band]->channels[i];
287
288 if (nl80211_msg_put_channel(msg, chan))
289 goto nla_put_failure;
290
291 nla_nest_end(msg, nl_freq);
292 }
293
294 nla_nest_end(msg, nl_freqs);
295
296 /* add bitrates */
297 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
298 if (!nl_rates)
299 goto nla_put_failure;
300
301 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
302 nl_rate = nla_nest_start(msg, i);
303 if (!nl_rate)
304 goto nla_put_failure;
305
306 rate = &dev->wiphy.bands[band]->bitrates[i];
307 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
308 rate->bitrate);
309 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
310 NLA_PUT_FLAG(msg,
311 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
312
313 nla_nest_end(msg, nl_rate);
314 }
315
316 nla_nest_end(msg, nl_rates);
317
318 nla_nest_end(msg, nl_band);
319 }
320 nla_nest_end(msg, nl_bands);
321
322 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
323 if (!nl_cmds)
324 goto nla_put_failure;
325
326 i = 0;
327 #define CMD(op, n) \
328 do { \
329 if (dev->ops->op) { \
330 i++; \
331 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
332 } \
333 } while (0)
334
335 CMD(add_virtual_intf, NEW_INTERFACE);
336 CMD(change_virtual_intf, SET_INTERFACE);
337 CMD(add_key, NEW_KEY);
338 CMD(add_beacon, NEW_BEACON);
339 CMD(add_station, NEW_STATION);
340 CMD(add_mpath, NEW_MPATH);
341 CMD(set_mesh_params, SET_MESH_PARAMS);
342 CMD(change_bss, SET_BSS);
343 CMD(auth, AUTHENTICATE);
344 CMD(assoc, ASSOCIATE);
345 CMD(deauth, DEAUTHENTICATE);
346 CMD(disassoc, DISASSOCIATE);
347 CMD(join_ibss, JOIN_IBSS);
348
349 #undef CMD
350 nla_nest_end(msg, nl_cmds);
351
352 return genlmsg_end(msg, hdr);
353
354 nla_put_failure:
355 genlmsg_cancel(msg, hdr);
356 return -EMSGSIZE;
357 }
358
359 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
360 {
361 int idx = 0;
362 int start = cb->args[0];
363 struct cfg80211_registered_device *dev;
364
365 mutex_lock(&cfg80211_mutex);
366 list_for_each_entry(dev, &cfg80211_drv_list, list) {
367 if (++idx <= start)
368 continue;
369 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
370 cb->nlh->nlmsg_seq, NLM_F_MULTI,
371 dev) < 0) {
372 idx--;
373 break;
374 }
375 }
376 mutex_unlock(&cfg80211_mutex);
377
378 cb->args[0] = idx;
379
380 return skb->len;
381 }
382
383 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
384 {
385 struct sk_buff *msg;
386 struct cfg80211_registered_device *dev;
387
388 dev = cfg80211_get_dev_from_info(info);
389 if (IS_ERR(dev))
390 return PTR_ERR(dev);
391
392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
393 if (!msg)
394 goto out_err;
395
396 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
397 goto out_free;
398
399 cfg80211_put_dev(dev);
400
401 return genlmsg_unicast(msg, info->snd_pid);
402
403 out_free:
404 nlmsg_free(msg);
405 out_err:
406 cfg80211_put_dev(dev);
407 return -ENOBUFS;
408 }
409
410 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
411 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
412 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
413 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
414 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
415 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
416 };
417
418 static int parse_txq_params(struct nlattr *tb[],
419 struct ieee80211_txq_params *txq_params)
420 {
421 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
422 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
423 !tb[NL80211_TXQ_ATTR_AIFS])
424 return -EINVAL;
425
426 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
427 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
428 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
429 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
430 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
431
432 return 0;
433 }
434
435 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
436 {
437 struct cfg80211_registered_device *rdev;
438 int result = 0, rem_txq_params = 0;
439 struct nlattr *nl_txq_params;
440 u32 changed;
441 u8 retry_short = 0, retry_long = 0;
442 u32 frag_threshold = 0, rts_threshold = 0;
443
444 rtnl_lock();
445
446 mutex_lock(&cfg80211_mutex);
447
448 rdev = __cfg80211_drv_from_info(info);
449 if (IS_ERR(rdev)) {
450 result = PTR_ERR(rdev);
451 goto unlock;
452 }
453
454 mutex_lock(&rdev->mtx);
455
456 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
457 result = cfg80211_dev_rename(
458 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
459
460 mutex_unlock(&cfg80211_mutex);
461
462 if (result)
463 goto bad_res;
464
465 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
466 struct ieee80211_txq_params txq_params;
467 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
468
469 if (!rdev->ops->set_txq_params) {
470 result = -EOPNOTSUPP;
471 goto bad_res;
472 }
473
474 nla_for_each_nested(nl_txq_params,
475 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
476 rem_txq_params) {
477 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
478 nla_data(nl_txq_params),
479 nla_len(nl_txq_params),
480 txq_params_policy);
481 result = parse_txq_params(tb, &txq_params);
482 if (result)
483 goto bad_res;
484
485 result = rdev->ops->set_txq_params(&rdev->wiphy,
486 &txq_params);
487 if (result)
488 goto bad_res;
489 }
490 }
491
492 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
493 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
494 struct ieee80211_channel *chan;
495 struct ieee80211_sta_ht_cap *ht_cap;
496 u32 freq;
497
498 if (!rdev->ops->set_channel) {
499 result = -EOPNOTSUPP;
500 goto bad_res;
501 }
502
503 result = -EINVAL;
504
505 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
506 channel_type = nla_get_u32(info->attrs[
507 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
508 if (channel_type != NL80211_CHAN_NO_HT &&
509 channel_type != NL80211_CHAN_HT20 &&
510 channel_type != NL80211_CHAN_HT40PLUS &&
511 channel_type != NL80211_CHAN_HT40MINUS)
512 goto bad_res;
513 }
514
515 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
516 chan = ieee80211_get_channel(&rdev->wiphy, freq);
517
518 /* Primary channel not allowed */
519 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
520 goto bad_res;
521
522 if (channel_type == NL80211_CHAN_HT40MINUS &&
523 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
524 goto bad_res;
525 else if (channel_type == NL80211_CHAN_HT40PLUS &&
526 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
527 goto bad_res;
528
529 /*
530 * At this point we know if that if HT40 was requested
531 * we are allowed to use it and the extension channel
532 * exists.
533 */
534
535 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
536
537 /* no HT capabilities or intolerant */
538 if (channel_type != NL80211_CHAN_NO_HT) {
539 if (!ht_cap->ht_supported)
540 goto bad_res;
541 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
542 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
543 goto bad_res;
544 }
545
546 result = rdev->ops->set_channel(&rdev->wiphy, chan,
547 channel_type);
548 if (result)
549 goto bad_res;
550 }
551
552 changed = 0;
553
554 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
555 retry_short = nla_get_u8(
556 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
557 if (retry_short == 0) {
558 result = -EINVAL;
559 goto bad_res;
560 }
561 changed |= WIPHY_PARAM_RETRY_SHORT;
562 }
563
564 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
565 retry_long = nla_get_u8(
566 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
567 if (retry_long == 0) {
568 result = -EINVAL;
569 goto bad_res;
570 }
571 changed |= WIPHY_PARAM_RETRY_LONG;
572 }
573
574 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
575 frag_threshold = nla_get_u32(
576 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
577 if (frag_threshold < 256) {
578 result = -EINVAL;
579 goto bad_res;
580 }
581 if (frag_threshold != (u32) -1) {
582 /*
583 * Fragments (apart from the last one) are required to
584 * have even length. Make the fragmentation code
585 * simpler by stripping LSB should someone try to use
586 * odd threshold value.
587 */
588 frag_threshold &= ~0x1;
589 }
590 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
591 }
592
593 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
594 rts_threshold = nla_get_u32(
595 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
596 changed |= WIPHY_PARAM_RTS_THRESHOLD;
597 }
598
599 if (changed) {
600 u8 old_retry_short, old_retry_long;
601 u32 old_frag_threshold, old_rts_threshold;
602
603 if (!rdev->ops->set_wiphy_params) {
604 result = -EOPNOTSUPP;
605 goto bad_res;
606 }
607
608 old_retry_short = rdev->wiphy.retry_short;
609 old_retry_long = rdev->wiphy.retry_long;
610 old_frag_threshold = rdev->wiphy.frag_threshold;
611 old_rts_threshold = rdev->wiphy.rts_threshold;
612
613 if (changed & WIPHY_PARAM_RETRY_SHORT)
614 rdev->wiphy.retry_short = retry_short;
615 if (changed & WIPHY_PARAM_RETRY_LONG)
616 rdev->wiphy.retry_long = retry_long;
617 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
618 rdev->wiphy.frag_threshold = frag_threshold;
619 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
620 rdev->wiphy.rts_threshold = rts_threshold;
621
622 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
623 if (result) {
624 rdev->wiphy.retry_short = old_retry_short;
625 rdev->wiphy.retry_long = old_retry_long;
626 rdev->wiphy.frag_threshold = old_frag_threshold;
627 rdev->wiphy.rts_threshold = old_rts_threshold;
628 }
629 }
630
631 bad_res:
632 mutex_unlock(&rdev->mtx);
633 unlock:
634 rtnl_unlock();
635 return result;
636 }
637
638
639 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
640 struct cfg80211_registered_device *rdev,
641 struct net_device *dev)
642 {
643 void *hdr;
644
645 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
646 if (!hdr)
647 return -1;
648
649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
650 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
651 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
652 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
653 return genlmsg_end(msg, hdr);
654
655 nla_put_failure:
656 genlmsg_cancel(msg, hdr);
657 return -EMSGSIZE;
658 }
659
660 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
661 {
662 int wp_idx = 0;
663 int if_idx = 0;
664 int wp_start = cb->args[0];
665 int if_start = cb->args[1];
666 struct cfg80211_registered_device *dev;
667 struct wireless_dev *wdev;
668
669 mutex_lock(&cfg80211_mutex);
670 list_for_each_entry(dev, &cfg80211_drv_list, list) {
671 if (wp_idx < wp_start) {
672 wp_idx++;
673 continue;
674 }
675 if_idx = 0;
676
677 mutex_lock(&dev->devlist_mtx);
678 list_for_each_entry(wdev, &dev->netdev_list, list) {
679 if (if_idx < if_start) {
680 if_idx++;
681 continue;
682 }
683 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
684 cb->nlh->nlmsg_seq, NLM_F_MULTI,
685 dev, wdev->netdev) < 0) {
686 mutex_unlock(&dev->devlist_mtx);
687 goto out;
688 }
689 if_idx++;
690 }
691 mutex_unlock(&dev->devlist_mtx);
692
693 wp_idx++;
694 }
695 out:
696 mutex_unlock(&cfg80211_mutex);
697
698 cb->args[0] = wp_idx;
699 cb->args[1] = if_idx;
700
701 return skb->len;
702 }
703
704 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
705 {
706 struct sk_buff *msg;
707 struct cfg80211_registered_device *dev;
708 struct net_device *netdev;
709 int err;
710
711 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
712 if (err)
713 return err;
714
715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
716 if (!msg)
717 goto out_err;
718
719 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
720 dev, netdev) < 0)
721 goto out_free;
722
723 dev_put(netdev);
724 cfg80211_put_dev(dev);
725
726 return genlmsg_unicast(msg, info->snd_pid);
727
728 out_free:
729 nlmsg_free(msg);
730 out_err:
731 dev_put(netdev);
732 cfg80211_put_dev(dev);
733 return -ENOBUFS;
734 }
735
736 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
737 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
738 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
739 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
740 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
741 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
742 };
743
744 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
745 {
746 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
747 int flag;
748
749 *mntrflags = 0;
750
751 if (!nla)
752 return -EINVAL;
753
754 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
755 nla, mntr_flags_policy))
756 return -EINVAL;
757
758 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
759 if (flags[flag])
760 *mntrflags |= (1<<flag);
761
762 return 0;
763 }
764
765 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
766 {
767 struct cfg80211_registered_device *drv;
768 struct vif_params params;
769 int err, ifindex;
770 enum nl80211_iftype otype, ntype;
771 struct net_device *dev;
772 u32 _flags, *flags = NULL;
773 bool change = false;
774
775 memset(&params, 0, sizeof(params));
776
777 rtnl_lock();
778
779 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
780 if (err)
781 goto unlock_rtnl;
782
783 ifindex = dev->ifindex;
784 otype = ntype = dev->ieee80211_ptr->iftype;
785 dev_put(dev);
786
787 if (info->attrs[NL80211_ATTR_IFTYPE]) {
788 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
789 if (otype != ntype)
790 change = true;
791 if (ntype > NL80211_IFTYPE_MAX) {
792 err = -EINVAL;
793 goto unlock;
794 }
795 }
796
797 if (!drv->ops->change_virtual_intf ||
798 !(drv->wiphy.interface_modes & (1 << ntype))) {
799 err = -EOPNOTSUPP;
800 goto unlock;
801 }
802
803 if (info->attrs[NL80211_ATTR_MESH_ID]) {
804 if (ntype != NL80211_IFTYPE_MESH_POINT) {
805 err = -EINVAL;
806 goto unlock;
807 }
808 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
809 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
810 change = true;
811 }
812
813 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
814 if (ntype != NL80211_IFTYPE_MONITOR) {
815 err = -EINVAL;
816 goto unlock;
817 }
818 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
819 &_flags);
820 if (err)
821 goto unlock;
822
823 flags = &_flags;
824 change = true;
825 }
826
827 if (change)
828 err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
829 ntype, flags, &params);
830 else
831 err = 0;
832
833 dev = __dev_get_by_index(&init_net, ifindex);
834 WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype));
835
836 if (dev && !err && (ntype != otype)) {
837 if (otype == NL80211_IFTYPE_ADHOC)
838 cfg80211_clear_ibss(dev, false);
839 }
840
841 unlock:
842 cfg80211_put_dev(drv);
843 unlock_rtnl:
844 rtnl_unlock();
845 return err;
846 }
847
848 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
849 {
850 struct cfg80211_registered_device *drv;
851 struct vif_params params;
852 int err;
853 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
854 u32 flags;
855
856 memset(&params, 0, sizeof(params));
857
858 if (!info->attrs[NL80211_ATTR_IFNAME])
859 return -EINVAL;
860
861 if (info->attrs[NL80211_ATTR_IFTYPE]) {
862 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
863 if (type > NL80211_IFTYPE_MAX)
864 return -EINVAL;
865 }
866
867 rtnl_lock();
868
869 drv = cfg80211_get_dev_from_info(info);
870 if (IS_ERR(drv)) {
871 err = PTR_ERR(drv);
872 goto unlock_rtnl;
873 }
874
875 if (!drv->ops->add_virtual_intf ||
876 !(drv->wiphy.interface_modes & (1 << type))) {
877 err = -EOPNOTSUPP;
878 goto unlock;
879 }
880
881 if (type == NL80211_IFTYPE_MESH_POINT &&
882 info->attrs[NL80211_ATTR_MESH_ID]) {
883 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
884 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
885 }
886
887 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
888 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
889 &flags);
890 err = drv->ops->add_virtual_intf(&drv->wiphy,
891 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
892 type, err ? NULL : &flags, &params);
893
894 unlock:
895 cfg80211_put_dev(drv);
896 unlock_rtnl:
897 rtnl_unlock();
898 return err;
899 }
900
901 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
902 {
903 struct cfg80211_registered_device *drv;
904 int ifindex, err;
905 struct net_device *dev;
906
907 rtnl_lock();
908
909 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
910 if (err)
911 goto unlock_rtnl;
912 ifindex = dev->ifindex;
913 dev_put(dev);
914
915 if (!drv->ops->del_virtual_intf) {
916 err = -EOPNOTSUPP;
917 goto out;
918 }
919
920 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
921
922 out:
923 cfg80211_put_dev(drv);
924 unlock_rtnl:
925 rtnl_unlock();
926 return err;
927 }
928
929 struct get_key_cookie {
930 struct sk_buff *msg;
931 int error;
932 };
933
934 static void get_key_callback(void *c, struct key_params *params)
935 {
936 struct get_key_cookie *cookie = c;
937
938 if (params->key)
939 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
940 params->key_len, params->key);
941
942 if (params->seq)
943 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
944 params->seq_len, params->seq);
945
946 if (params->cipher)
947 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
948 params->cipher);
949
950 return;
951 nla_put_failure:
952 cookie->error = 1;
953 }
954
955 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
956 {
957 struct cfg80211_registered_device *drv;
958 int err;
959 struct net_device *dev;
960 u8 key_idx = 0;
961 u8 *mac_addr = NULL;
962 struct get_key_cookie cookie = {
963 .error = 0,
964 };
965 void *hdr;
966 struct sk_buff *msg;
967
968 if (info->attrs[NL80211_ATTR_KEY_IDX])
969 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
970
971 if (key_idx > 5)
972 return -EINVAL;
973
974 if (info->attrs[NL80211_ATTR_MAC])
975 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
976
977 rtnl_lock();
978
979 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
980 if (err)
981 goto unlock_rtnl;
982
983 if (!drv->ops->get_key) {
984 err = -EOPNOTSUPP;
985 goto out;
986 }
987
988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
989 if (!msg) {
990 err = -ENOMEM;
991 goto out;
992 }
993
994 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
995 NL80211_CMD_NEW_KEY);
996
997 if (IS_ERR(hdr)) {
998 err = PTR_ERR(hdr);
999 goto out;
1000 }
1001
1002 cookie.msg = msg;
1003
1004 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1005 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1006 if (mac_addr)
1007 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1008
1009 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
1010 &cookie, get_key_callback);
1011
1012 if (err)
1013 goto out;
1014
1015 if (cookie.error)
1016 goto nla_put_failure;
1017
1018 genlmsg_end(msg, hdr);
1019 err = genlmsg_unicast(msg, info->snd_pid);
1020 goto out;
1021
1022 nla_put_failure:
1023 err = -ENOBUFS;
1024 nlmsg_free(msg);
1025 out:
1026 cfg80211_put_dev(drv);
1027 dev_put(dev);
1028 unlock_rtnl:
1029 rtnl_unlock();
1030
1031 return err;
1032 }
1033
1034 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1035 {
1036 struct cfg80211_registered_device *drv;
1037 int err;
1038 struct net_device *dev;
1039 u8 key_idx;
1040 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1041 u8 key_index);
1042
1043 if (!info->attrs[NL80211_ATTR_KEY_IDX])
1044 return -EINVAL;
1045
1046 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1047
1048 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
1049 if (key_idx < 4 || key_idx > 5)
1050 return -EINVAL;
1051 } else if (key_idx > 3)
1052 return -EINVAL;
1053
1054 /* currently only support setting default key */
1055 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
1056 !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
1057 return -EINVAL;
1058
1059 rtnl_lock();
1060
1061 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1062 if (err)
1063 goto unlock_rtnl;
1064
1065 if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
1066 func = drv->ops->set_default_key;
1067 else
1068 func = drv->ops->set_default_mgmt_key;
1069
1070 if (!func) {
1071 err = -EOPNOTSUPP;
1072 goto out;
1073 }
1074
1075 err = func(&drv->wiphy, dev, key_idx);
1076 #ifdef CONFIG_WIRELESS_EXT
1077 if (!err) {
1078 if (func == drv->ops->set_default_key)
1079 dev->ieee80211_ptr->wext.default_key = key_idx;
1080 else
1081 dev->ieee80211_ptr->wext.default_mgmt_key = key_idx;
1082 }
1083 #endif
1084
1085 out:
1086 cfg80211_put_dev(drv);
1087 dev_put(dev);
1088
1089 unlock_rtnl:
1090 rtnl_unlock();
1091
1092 return err;
1093 }
1094
1095 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1096 {
1097 struct cfg80211_registered_device *drv;
1098 int err, i;
1099 struct net_device *dev;
1100 struct key_params params;
1101 u8 key_idx = 0;
1102 u8 *mac_addr = NULL;
1103
1104 memset(&params, 0, sizeof(params));
1105
1106 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
1107 return -EINVAL;
1108
1109 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1110 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1111 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1112 }
1113
1114 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1115 params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1116 params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1117 }
1118
1119 if (info->attrs[NL80211_ATTR_KEY_IDX])
1120 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1121
1122 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1123
1124 if (info->attrs[NL80211_ATTR_MAC])
1125 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1126
1127 if (cfg80211_validate_key_settings(&params, key_idx, mac_addr))
1128 return -EINVAL;
1129
1130 rtnl_lock();
1131
1132 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1133 if (err)
1134 goto unlock_rtnl;
1135
1136 for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
1137 if (params.cipher == drv->wiphy.cipher_suites[i])
1138 break;
1139 if (i == drv->wiphy.n_cipher_suites) {
1140 err = -EINVAL;
1141 goto out;
1142 }
1143
1144 if (!drv->ops->add_key) {
1145 err = -EOPNOTSUPP;
1146 goto out;
1147 }
1148
1149 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
1150
1151 out:
1152 cfg80211_put_dev(drv);
1153 dev_put(dev);
1154 unlock_rtnl:
1155 rtnl_unlock();
1156
1157 return err;
1158 }
1159
1160 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1161 {
1162 struct cfg80211_registered_device *drv;
1163 int err;
1164 struct net_device *dev;
1165 u8 key_idx = 0;
1166 u8 *mac_addr = NULL;
1167
1168 if (info->attrs[NL80211_ATTR_KEY_IDX])
1169 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1170
1171 if (key_idx > 5)
1172 return -EINVAL;
1173
1174 if (info->attrs[NL80211_ATTR_MAC])
1175 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1176
1177 rtnl_lock();
1178
1179 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1180 if (err)
1181 goto unlock_rtnl;
1182
1183 if (!drv->ops->del_key) {
1184 err = -EOPNOTSUPP;
1185 goto out;
1186 }
1187
1188 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
1189
1190 #ifdef CONFIG_WIRELESS_EXT
1191 if (!err) {
1192 if (key_idx == dev->ieee80211_ptr->wext.default_key)
1193 dev->ieee80211_ptr->wext.default_key = -1;
1194 else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1195 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1196 }
1197 #endif
1198
1199 out:
1200 cfg80211_put_dev(drv);
1201 dev_put(dev);
1202
1203 unlock_rtnl:
1204 rtnl_unlock();
1205
1206 return err;
1207 }
1208
1209 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1210 {
1211 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1212 struct beacon_parameters *info);
1213 struct cfg80211_registered_device *drv;
1214 int err;
1215 struct net_device *dev;
1216 struct beacon_parameters params;
1217 int haveinfo = 0;
1218
1219 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1220 return -EINVAL;
1221
1222 rtnl_lock();
1223
1224 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1225 if (err)
1226 goto unlock_rtnl;
1227
1228 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1229 err = -EOPNOTSUPP;
1230 goto out;
1231 }
1232
1233 switch (info->genlhdr->cmd) {
1234 case NL80211_CMD_NEW_BEACON:
1235 /* these are required for NEW_BEACON */
1236 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1237 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1238 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1239 err = -EINVAL;
1240 goto out;
1241 }
1242
1243 call = drv->ops->add_beacon;
1244 break;
1245 case NL80211_CMD_SET_BEACON:
1246 call = drv->ops->set_beacon;
1247 break;
1248 default:
1249 WARN_ON(1);
1250 err = -EOPNOTSUPP;
1251 goto out;
1252 }
1253
1254 if (!call) {
1255 err = -EOPNOTSUPP;
1256 goto out;
1257 }
1258
1259 memset(&params, 0, sizeof(params));
1260
1261 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1262 params.interval =
1263 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1264 haveinfo = 1;
1265 }
1266
1267 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1268 params.dtim_period =
1269 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1270 haveinfo = 1;
1271 }
1272
1273 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1274 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1275 params.head_len =
1276 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1277 haveinfo = 1;
1278 }
1279
1280 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1281 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1282 params.tail_len =
1283 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1284 haveinfo = 1;
1285 }
1286
1287 if (!haveinfo) {
1288 err = -EINVAL;
1289 goto out;
1290 }
1291
1292 err = call(&drv->wiphy, dev, &params);
1293
1294 out:
1295 cfg80211_put_dev(drv);
1296 dev_put(dev);
1297 unlock_rtnl:
1298 rtnl_unlock();
1299
1300 return err;
1301 }
1302
1303 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1304 {
1305 struct cfg80211_registered_device *drv;
1306 int err;
1307 struct net_device *dev;
1308
1309 rtnl_lock();
1310
1311 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1312 if (err)
1313 goto unlock_rtnl;
1314
1315 if (!drv->ops->del_beacon) {
1316 err = -EOPNOTSUPP;
1317 goto out;
1318 }
1319
1320 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1321 err = -EOPNOTSUPP;
1322 goto out;
1323 }
1324 err = drv->ops->del_beacon(&drv->wiphy, dev);
1325
1326 out:
1327 cfg80211_put_dev(drv);
1328 dev_put(dev);
1329 unlock_rtnl:
1330 rtnl_unlock();
1331
1332 return err;
1333 }
1334
1335 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1336 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1337 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1338 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1339 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1340 };
1341
1342 static int parse_station_flags(struct genl_info *info,
1343 struct station_parameters *params)
1344 {
1345 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1346 struct nlattr *nla;
1347 int flag;
1348
1349 /*
1350 * Try parsing the new attribute first so userspace
1351 * can specify both for older kernels.
1352 */
1353 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1354 if (nla) {
1355 struct nl80211_sta_flag_update *sta_flags;
1356
1357 sta_flags = nla_data(nla);
1358 params->sta_flags_mask = sta_flags->mask;
1359 params->sta_flags_set = sta_flags->set;
1360 if ((params->sta_flags_mask |
1361 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1362 return -EINVAL;
1363 return 0;
1364 }
1365
1366 /* if present, parse the old attribute */
1367
1368 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1369 if (!nla)
1370 return 0;
1371
1372 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1373 nla, sta_flags_policy))
1374 return -EINVAL;
1375
1376 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1377 params->sta_flags_mask &= ~1;
1378
1379 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1380 if (flags[flag])
1381 params->sta_flags_set |= (1<<flag);
1382
1383 return 0;
1384 }
1385
1386 static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1387 {
1388 int modulation, streams, bitrate;
1389
1390 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1391 return rate->legacy;
1392
1393 /* the formula below does only work for MCS values smaller than 32 */
1394 if (rate->mcs >= 32)
1395 return 0;
1396
1397 modulation = rate->mcs & 7;
1398 streams = (rate->mcs >> 3) + 1;
1399
1400 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1401 13500000 : 6500000;
1402
1403 if (modulation < 4)
1404 bitrate *= (modulation + 1);
1405 else if (modulation == 4)
1406 bitrate *= (modulation + 2);
1407 else
1408 bitrate *= (modulation + 3);
1409
1410 bitrate *= streams;
1411
1412 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1413 bitrate = (bitrate / 9) * 10;
1414
1415 /* do NOT round down here */
1416 return (bitrate + 50000) / 100000;
1417 }
1418
1419 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1420 int flags, struct net_device *dev,
1421 u8 *mac_addr, struct station_info *sinfo)
1422 {
1423 void *hdr;
1424 struct nlattr *sinfoattr, *txrate;
1425 u16 bitrate;
1426
1427 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1428 if (!hdr)
1429 return -1;
1430
1431 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1432 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1433
1434 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1435 if (!sinfoattr)
1436 goto nla_put_failure;
1437 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1438 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1439 sinfo->inactive_time);
1440 if (sinfo->filled & STATION_INFO_RX_BYTES)
1441 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1442 sinfo->rx_bytes);
1443 if (sinfo->filled & STATION_INFO_TX_BYTES)
1444 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1445 sinfo->tx_bytes);
1446 if (sinfo->filled & STATION_INFO_LLID)
1447 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1448 sinfo->llid);
1449 if (sinfo->filled & STATION_INFO_PLID)
1450 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1451 sinfo->plid);
1452 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1453 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1454 sinfo->plink_state);
1455 if (sinfo->filled & STATION_INFO_SIGNAL)
1456 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1457 sinfo->signal);
1458 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1459 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1460 if (!txrate)
1461 goto nla_put_failure;
1462
1463 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1464 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1465 if (bitrate > 0)
1466 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1467
1468 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1469 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1470 sinfo->txrate.mcs);
1471 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1472 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1473 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1474 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1475
1476 nla_nest_end(msg, txrate);
1477 }
1478 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1479 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1480 sinfo->rx_packets);
1481 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1482 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1483 sinfo->tx_packets);
1484 nla_nest_end(msg, sinfoattr);
1485
1486 return genlmsg_end(msg, hdr);
1487
1488 nla_put_failure:
1489 genlmsg_cancel(msg, hdr);
1490 return -EMSGSIZE;
1491 }
1492
1493 static int nl80211_dump_station(struct sk_buff *skb,
1494 struct netlink_callback *cb)
1495 {
1496 struct station_info sinfo;
1497 struct cfg80211_registered_device *dev;
1498 struct net_device *netdev;
1499 u8 mac_addr[ETH_ALEN];
1500 int ifidx = cb->args[0];
1501 int sta_idx = cb->args[1];
1502 int err;
1503
1504 if (!ifidx) {
1505 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1506 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1507 nl80211_policy);
1508 if (err)
1509 return err;
1510
1511 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1512 return -EINVAL;
1513
1514 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1515 if (!ifidx)
1516 return -EINVAL;
1517 }
1518
1519 rtnl_lock();
1520
1521 netdev = __dev_get_by_index(&init_net, ifidx);
1522 if (!netdev) {
1523 err = -ENODEV;
1524 goto out_rtnl;
1525 }
1526
1527 dev = cfg80211_get_dev_from_ifindex(ifidx);
1528 if (IS_ERR(dev)) {
1529 err = PTR_ERR(dev);
1530 goto out_rtnl;
1531 }
1532
1533 if (!dev->ops->dump_station) {
1534 err = -EOPNOTSUPP;
1535 goto out_err;
1536 }
1537
1538 while (1) {
1539 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1540 mac_addr, &sinfo);
1541 if (err == -ENOENT)
1542 break;
1543 if (err)
1544 goto out_err;
1545
1546 if (nl80211_send_station(skb,
1547 NETLINK_CB(cb->skb).pid,
1548 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1549 netdev, mac_addr,
1550 &sinfo) < 0)
1551 goto out;
1552
1553 sta_idx++;
1554 }
1555
1556
1557 out:
1558 cb->args[1] = sta_idx;
1559 err = skb->len;
1560 out_err:
1561 cfg80211_put_dev(dev);
1562 out_rtnl:
1563 rtnl_unlock();
1564
1565 return err;
1566 }
1567
1568 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1569 {
1570 struct cfg80211_registered_device *drv;
1571 int err;
1572 struct net_device *dev;
1573 struct station_info sinfo;
1574 struct sk_buff *msg;
1575 u8 *mac_addr = NULL;
1576
1577 memset(&sinfo, 0, sizeof(sinfo));
1578
1579 if (!info->attrs[NL80211_ATTR_MAC])
1580 return -EINVAL;
1581
1582 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1583
1584 rtnl_lock();
1585
1586 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1587 if (err)
1588 goto out_rtnl;
1589
1590 if (!drv->ops->get_station) {
1591 err = -EOPNOTSUPP;
1592 goto out;
1593 }
1594
1595 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1596 if (err)
1597 goto out;
1598
1599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1600 if (!msg)
1601 goto out;
1602
1603 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1604 dev, mac_addr, &sinfo) < 0)
1605 goto out_free;
1606
1607 err = genlmsg_unicast(msg, info->snd_pid);
1608 goto out;
1609
1610 out_free:
1611 nlmsg_free(msg);
1612 out:
1613 cfg80211_put_dev(drv);
1614 dev_put(dev);
1615 out_rtnl:
1616 rtnl_unlock();
1617
1618 return err;
1619 }
1620
1621 /*
1622 * Get vlan interface making sure it is on the right wiphy.
1623 */
1624 static int get_vlan(struct nlattr *vlanattr,
1625 struct cfg80211_registered_device *rdev,
1626 struct net_device **vlan)
1627 {
1628 *vlan = NULL;
1629
1630 if (vlanattr) {
1631 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1632 if (!*vlan)
1633 return -ENODEV;
1634 if (!(*vlan)->ieee80211_ptr)
1635 return -EINVAL;
1636 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1637 return -EINVAL;
1638 }
1639 return 0;
1640 }
1641
1642 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1643 {
1644 struct cfg80211_registered_device *drv;
1645 int err;
1646 struct net_device *dev;
1647 struct station_parameters params;
1648 u8 *mac_addr = NULL;
1649
1650 memset(&params, 0, sizeof(params));
1651
1652 params.listen_interval = -1;
1653
1654 if (info->attrs[NL80211_ATTR_STA_AID])
1655 return -EINVAL;
1656
1657 if (!info->attrs[NL80211_ATTR_MAC])
1658 return -EINVAL;
1659
1660 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1661
1662 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1663 params.supported_rates =
1664 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1665 params.supported_rates_len =
1666 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1667 }
1668
1669 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1670 params.listen_interval =
1671 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1672
1673 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1674 params.ht_capa =
1675 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1676
1677 if (parse_station_flags(info, &params))
1678 return -EINVAL;
1679
1680 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1681 params.plink_action =
1682 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1683
1684 rtnl_lock();
1685
1686 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1687 if (err)
1688 goto out_rtnl;
1689
1690 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1691 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
1692 err = -EINVAL;
1693 goto out;
1694 }
1695
1696 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1697 if (err)
1698 goto out;
1699
1700 if (!drv->ops->change_station) {
1701 err = -EOPNOTSUPP;
1702 goto out;
1703 }
1704
1705 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
1706
1707 out:
1708 if (params.vlan)
1709 dev_put(params.vlan);
1710 cfg80211_put_dev(drv);
1711 dev_put(dev);
1712 out_rtnl:
1713 rtnl_unlock();
1714
1715 return err;
1716 }
1717
1718 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1719 {
1720 struct cfg80211_registered_device *drv;
1721 int err;
1722 struct net_device *dev;
1723 struct station_parameters params;
1724 u8 *mac_addr = NULL;
1725
1726 memset(&params, 0, sizeof(params));
1727
1728 if (!info->attrs[NL80211_ATTR_MAC])
1729 return -EINVAL;
1730
1731 if (!info->attrs[NL80211_ATTR_STA_AID])
1732 return -EINVAL;
1733
1734 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1735 return -EINVAL;
1736
1737 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1738 return -EINVAL;
1739
1740 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1741 params.supported_rates =
1742 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1743 params.supported_rates_len =
1744 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1745 params.listen_interval =
1746 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1747
1748 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1749 if (!params.aid || params.aid > IEEE80211_MAX_AID)
1750 return -EINVAL;
1751
1752 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1753 params.ht_capa =
1754 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1755
1756 if (parse_station_flags(info, &params))
1757 return -EINVAL;
1758
1759 rtnl_lock();
1760
1761 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1762 if (err)
1763 goto out_rtnl;
1764
1765 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1766 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
1767 err = -EINVAL;
1768 goto out;
1769 }
1770
1771 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1772 if (err)
1773 goto out;
1774
1775 if (!drv->ops->add_station) {
1776 err = -EOPNOTSUPP;
1777 goto out;
1778 }
1779
1780 if (!netif_running(dev)) {
1781 err = -ENETDOWN;
1782 goto out;
1783 }
1784
1785 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
1786
1787 out:
1788 if (params.vlan)
1789 dev_put(params.vlan);
1790 cfg80211_put_dev(drv);
1791 dev_put(dev);
1792 out_rtnl:
1793 rtnl_unlock();
1794
1795 return err;
1796 }
1797
1798 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1799 {
1800 struct cfg80211_registered_device *drv;
1801 int err;
1802 struct net_device *dev;
1803 u8 *mac_addr = NULL;
1804
1805 if (info->attrs[NL80211_ATTR_MAC])
1806 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1807
1808 rtnl_lock();
1809
1810 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1811 if (err)
1812 goto out_rtnl;
1813
1814 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1815 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
1816 err = -EINVAL;
1817 goto out;
1818 }
1819
1820 if (!drv->ops->del_station) {
1821 err = -EOPNOTSUPP;
1822 goto out;
1823 }
1824
1825 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1826
1827 out:
1828 cfg80211_put_dev(drv);
1829 dev_put(dev);
1830 out_rtnl:
1831 rtnl_unlock();
1832
1833 return err;
1834 }
1835
1836 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1837 int flags, struct net_device *dev,
1838 u8 *dst, u8 *next_hop,
1839 struct mpath_info *pinfo)
1840 {
1841 void *hdr;
1842 struct nlattr *pinfoattr;
1843
1844 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1845 if (!hdr)
1846 return -1;
1847
1848 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1849 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1850 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1851
1852 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1853 if (!pinfoattr)
1854 goto nla_put_failure;
1855 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1856 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1857 pinfo->frame_qlen);
1858 if (pinfo->filled & MPATH_INFO_DSN)
1859 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1860 pinfo->dsn);
1861 if (pinfo->filled & MPATH_INFO_METRIC)
1862 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1863 pinfo->metric);
1864 if (pinfo->filled & MPATH_INFO_EXPTIME)
1865 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1866 pinfo->exptime);
1867 if (pinfo->filled & MPATH_INFO_FLAGS)
1868 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1869 pinfo->flags);
1870 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1871 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1872 pinfo->discovery_timeout);
1873 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1874 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1875 pinfo->discovery_retries);
1876
1877 nla_nest_end(msg, pinfoattr);
1878
1879 return genlmsg_end(msg, hdr);
1880
1881 nla_put_failure:
1882 genlmsg_cancel(msg, hdr);
1883 return -EMSGSIZE;
1884 }
1885
1886 static int nl80211_dump_mpath(struct sk_buff *skb,
1887 struct netlink_callback *cb)
1888 {
1889 struct mpath_info pinfo;
1890 struct cfg80211_registered_device *dev;
1891 struct net_device *netdev;
1892 u8 dst[ETH_ALEN];
1893 u8 next_hop[ETH_ALEN];
1894 int ifidx = cb->args[0];
1895 int path_idx = cb->args[1];
1896 int err;
1897
1898 if (!ifidx) {
1899 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1900 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1901 nl80211_policy);
1902 if (err)
1903 return err;
1904
1905 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1906 return -EINVAL;
1907
1908 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1909 if (!ifidx)
1910 return -EINVAL;
1911 }
1912
1913 rtnl_lock();
1914
1915 netdev = __dev_get_by_index(&init_net, ifidx);
1916 if (!netdev) {
1917 err = -ENODEV;
1918 goto out_rtnl;
1919 }
1920
1921 dev = cfg80211_get_dev_from_ifindex(ifidx);
1922 if (IS_ERR(dev)) {
1923 err = PTR_ERR(dev);
1924 goto out_rtnl;
1925 }
1926
1927 if (!dev->ops->dump_mpath) {
1928 err = -EOPNOTSUPP;
1929 goto out_err;
1930 }
1931
1932 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1933 err = -EOPNOTSUPP;
1934 goto out;
1935 }
1936
1937 while (1) {
1938 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
1939 dst, next_hop, &pinfo);
1940 if (err == -ENOENT)
1941 break;
1942 if (err)
1943 goto out_err;
1944
1945 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
1946 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1947 netdev, dst, next_hop,
1948 &pinfo) < 0)
1949 goto out;
1950
1951 path_idx++;
1952 }
1953
1954
1955 out:
1956 cb->args[1] = path_idx;
1957 err = skb->len;
1958 out_err:
1959 cfg80211_put_dev(dev);
1960 out_rtnl:
1961 rtnl_unlock();
1962
1963 return err;
1964 }
1965
1966 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
1967 {
1968 struct cfg80211_registered_device *drv;
1969 int err;
1970 struct net_device *dev;
1971 struct mpath_info pinfo;
1972 struct sk_buff *msg;
1973 u8 *dst = NULL;
1974 u8 next_hop[ETH_ALEN];
1975
1976 memset(&pinfo, 0, sizeof(pinfo));
1977
1978 if (!info->attrs[NL80211_ATTR_MAC])
1979 return -EINVAL;
1980
1981 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1982
1983 rtnl_lock();
1984
1985 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1986 if (err)
1987 goto out_rtnl;
1988
1989 if (!drv->ops->get_mpath) {
1990 err = -EOPNOTSUPP;
1991 goto out;
1992 }
1993
1994 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1995 err = -EOPNOTSUPP;
1996 goto out;
1997 }
1998
1999 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
2000 if (err)
2001 goto out;
2002
2003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2004 if (!msg)
2005 goto out;
2006
2007 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2008 dev, dst, next_hop, &pinfo) < 0)
2009 goto out_free;
2010
2011 err = genlmsg_unicast(msg, info->snd_pid);
2012 goto out;
2013
2014 out_free:
2015 nlmsg_free(msg);
2016 out:
2017 cfg80211_put_dev(drv);
2018 dev_put(dev);
2019 out_rtnl:
2020 rtnl_unlock();
2021
2022 return err;
2023 }
2024
2025 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *drv;
2028 int err;
2029 struct net_device *dev;
2030 u8 *dst = NULL;
2031 u8 *next_hop = NULL;
2032
2033 if (!info->attrs[NL80211_ATTR_MAC])
2034 return -EINVAL;
2035
2036 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2037 return -EINVAL;
2038
2039 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2040 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2041
2042 rtnl_lock();
2043
2044 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2045 if (err)
2046 goto out_rtnl;
2047
2048 if (!drv->ops->change_mpath) {
2049 err = -EOPNOTSUPP;
2050 goto out;
2051 }
2052
2053 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2054 err = -EOPNOTSUPP;
2055 goto out;
2056 }
2057
2058 if (!netif_running(dev)) {
2059 err = -ENETDOWN;
2060 goto out;
2061 }
2062
2063 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
2064
2065 out:
2066 cfg80211_put_dev(drv);
2067 dev_put(dev);
2068 out_rtnl:
2069 rtnl_unlock();
2070
2071 return err;
2072 }
2073 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2074 {
2075 struct cfg80211_registered_device *drv;
2076 int err;
2077 struct net_device *dev;
2078 u8 *dst = NULL;
2079 u8 *next_hop = NULL;
2080
2081 if (!info->attrs[NL80211_ATTR_MAC])
2082 return -EINVAL;
2083
2084 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2085 return -EINVAL;
2086
2087 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2088 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2089
2090 rtnl_lock();
2091
2092 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2093 if (err)
2094 goto out_rtnl;
2095
2096 if (!drv->ops->add_mpath) {
2097 err = -EOPNOTSUPP;
2098 goto out;
2099 }
2100
2101 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2102 err = -EOPNOTSUPP;
2103 goto out;
2104 }
2105
2106 if (!netif_running(dev)) {
2107 err = -ENETDOWN;
2108 goto out;
2109 }
2110
2111 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
2112
2113 out:
2114 cfg80211_put_dev(drv);
2115 dev_put(dev);
2116 out_rtnl:
2117 rtnl_unlock();
2118
2119 return err;
2120 }
2121
2122 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2123 {
2124 struct cfg80211_registered_device *drv;
2125 int err;
2126 struct net_device *dev;
2127 u8 *dst = NULL;
2128
2129 if (info->attrs[NL80211_ATTR_MAC])
2130 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2131
2132 rtnl_lock();
2133
2134 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2135 if (err)
2136 goto out_rtnl;
2137
2138 if (!drv->ops->del_mpath) {
2139 err = -EOPNOTSUPP;
2140 goto out;
2141 }
2142
2143 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
2144
2145 out:
2146 cfg80211_put_dev(drv);
2147 dev_put(dev);
2148 out_rtnl:
2149 rtnl_unlock();
2150
2151 return err;
2152 }
2153
2154 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2155 {
2156 struct cfg80211_registered_device *drv;
2157 int err;
2158 struct net_device *dev;
2159 struct bss_parameters params;
2160
2161 memset(&params, 0, sizeof(params));
2162 /* default to not changing parameters */
2163 params.use_cts_prot = -1;
2164 params.use_short_preamble = -1;
2165 params.use_short_slot_time = -1;
2166
2167 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2168 params.use_cts_prot =
2169 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2170 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2171 params.use_short_preamble =
2172 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2173 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2174 params.use_short_slot_time =
2175 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2176 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2177 params.basic_rates =
2178 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2179 params.basic_rates_len =
2180 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2181 }
2182
2183 rtnl_lock();
2184
2185 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2186 if (err)
2187 goto out_rtnl;
2188
2189 if (!drv->ops->change_bss) {
2190 err = -EOPNOTSUPP;
2191 goto out;
2192 }
2193
2194 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2195 err = -EOPNOTSUPP;
2196 goto out;
2197 }
2198
2199 err = drv->ops->change_bss(&drv->wiphy, dev, &params);
2200
2201 out:
2202 cfg80211_put_dev(drv);
2203 dev_put(dev);
2204 out_rtnl:
2205 rtnl_unlock();
2206
2207 return err;
2208 }
2209
2210 static const struct nla_policy
2211 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2212 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2213 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2214 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2215 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2216 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2217 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2218 };
2219
2220 static int parse_reg_rule(struct nlattr *tb[],
2221 struct ieee80211_reg_rule *reg_rule)
2222 {
2223 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2224 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2225
2226 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2227 return -EINVAL;
2228 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2229 return -EINVAL;
2230 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2231 return -EINVAL;
2232 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2233 return -EINVAL;
2234 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2235 return -EINVAL;
2236
2237 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2238
2239 freq_range->start_freq_khz =
2240 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2241 freq_range->end_freq_khz =
2242 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2243 freq_range->max_bandwidth_khz =
2244 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2245
2246 power_rule->max_eirp =
2247 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2248
2249 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2250 power_rule->max_antenna_gain =
2251 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2252
2253 return 0;
2254 }
2255
2256 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2257 {
2258 int r;
2259 char *data = NULL;
2260
2261 /*
2262 * You should only get this when cfg80211 hasn't yet initialized
2263 * completely when built-in to the kernel right between the time
2264 * window between nl80211_init() and regulatory_init(), if that is
2265 * even possible.
2266 */
2267 mutex_lock(&cfg80211_mutex);
2268 if (unlikely(!cfg80211_regdomain)) {
2269 mutex_unlock(&cfg80211_mutex);
2270 return -EINPROGRESS;
2271 }
2272 mutex_unlock(&cfg80211_mutex);
2273
2274 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2275 return -EINVAL;
2276
2277 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2278
2279 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
2280 /* We ignore world regdom requests with the old regdom setup */
2281 if (is_world_regdom(data))
2282 return -EINVAL;
2283 #endif
2284
2285 r = regulatory_hint_user(data);
2286
2287 return r;
2288 }
2289
2290 static int nl80211_get_mesh_params(struct sk_buff *skb,
2291 struct genl_info *info)
2292 {
2293 struct cfg80211_registered_device *drv;
2294 struct mesh_config cur_params;
2295 int err;
2296 struct net_device *dev;
2297 void *hdr;
2298 struct nlattr *pinfoattr;
2299 struct sk_buff *msg;
2300
2301 rtnl_lock();
2302
2303 /* Look up our device */
2304 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2305 if (err)
2306 goto out_rtnl;
2307
2308 if (!drv->ops->get_mesh_params) {
2309 err = -EOPNOTSUPP;
2310 goto out;
2311 }
2312
2313 /* Get the mesh params */
2314 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
2315 if (err)
2316 goto out;
2317
2318 /* Draw up a netlink message to send back */
2319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2320 if (!msg) {
2321 err = -ENOBUFS;
2322 goto out;
2323 }
2324 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2325 NL80211_CMD_GET_MESH_PARAMS);
2326 if (!hdr)
2327 goto nla_put_failure;
2328 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2329 if (!pinfoattr)
2330 goto nla_put_failure;
2331 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2332 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2333 cur_params.dot11MeshRetryTimeout);
2334 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2335 cur_params.dot11MeshConfirmTimeout);
2336 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2337 cur_params.dot11MeshHoldingTimeout);
2338 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2339 cur_params.dot11MeshMaxPeerLinks);
2340 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2341 cur_params.dot11MeshMaxRetries);
2342 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2343 cur_params.dot11MeshTTL);
2344 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2345 cur_params.auto_open_plinks);
2346 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2347 cur_params.dot11MeshHWMPmaxPREQretries);
2348 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2349 cur_params.path_refresh_time);
2350 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2351 cur_params.min_discovery_timeout);
2352 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2353 cur_params.dot11MeshHWMPactivePathTimeout);
2354 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2355 cur_params.dot11MeshHWMPpreqMinInterval);
2356 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2357 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2358 nla_nest_end(msg, pinfoattr);
2359 genlmsg_end(msg, hdr);
2360 err = genlmsg_unicast(msg, info->snd_pid);
2361 goto out;
2362
2363 nla_put_failure:
2364 genlmsg_cancel(msg, hdr);
2365 err = -EMSGSIZE;
2366 out:
2367 /* Cleanup */
2368 cfg80211_put_dev(drv);
2369 dev_put(dev);
2370 out_rtnl:
2371 rtnl_unlock();
2372
2373 return err;
2374 }
2375
2376 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2377 do {\
2378 if (table[attr_num]) {\
2379 cfg.param = nla_fn(table[attr_num]); \
2380 mask |= (1 << (attr_num - 1)); \
2381 } \
2382 } while (0);\
2383
2384 static struct nla_policy
2385 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2386 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2387 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2388 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2389 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2390 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2391 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2392 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2393
2394 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2395 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2396 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2397 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2398 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2399 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2400 };
2401
2402 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2403 {
2404 int err;
2405 u32 mask;
2406 struct cfg80211_registered_device *drv;
2407 struct net_device *dev;
2408 struct mesh_config cfg;
2409 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2410 struct nlattr *parent_attr;
2411
2412 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2413 if (!parent_attr)
2414 return -EINVAL;
2415 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2416 parent_attr, nl80211_meshconf_params_policy))
2417 return -EINVAL;
2418
2419 rtnl_lock();
2420
2421 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2422 if (err)
2423 goto out_rtnl;
2424
2425 if (!drv->ops->set_mesh_params) {
2426 err = -EOPNOTSUPP;
2427 goto out;
2428 }
2429
2430 /* This makes sure that there aren't more than 32 mesh config
2431 * parameters (otherwise our bitfield scheme would not work.) */
2432 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2433
2434 /* Fill in the params struct */
2435 mask = 0;
2436 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2437 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2438 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2439 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2440 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2441 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2442 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2443 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2444 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2445 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2446 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2447 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2448 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2449 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2450 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2451 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2452 nla_get_u8);
2453 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2454 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2455 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2456 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2457 nla_get_u16);
2458 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2459 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2460 nla_get_u32);
2461 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2462 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2463 nla_get_u16);
2464 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2465 dot11MeshHWMPnetDiameterTraversalTime,
2466 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2467 nla_get_u16);
2468
2469 /* Apply changes */
2470 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
2471
2472 out:
2473 /* cleanup */
2474 cfg80211_put_dev(drv);
2475 dev_put(dev);
2476 out_rtnl:
2477 rtnl_unlock();
2478
2479 return err;
2480 }
2481
2482 #undef FILL_IN_MESH_PARAM_IF_SET
2483
2484 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2485 {
2486 struct sk_buff *msg;
2487 void *hdr = NULL;
2488 struct nlattr *nl_reg_rules;
2489 unsigned int i;
2490 int err = -EINVAL;
2491
2492 mutex_lock(&cfg80211_mutex);
2493
2494 if (!cfg80211_regdomain)
2495 goto out;
2496
2497 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2498 if (!msg) {
2499 err = -ENOBUFS;
2500 goto out;
2501 }
2502
2503 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2504 NL80211_CMD_GET_REG);
2505 if (!hdr)
2506 goto nla_put_failure;
2507
2508 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2509 cfg80211_regdomain->alpha2);
2510
2511 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2512 if (!nl_reg_rules)
2513 goto nla_put_failure;
2514
2515 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2516 struct nlattr *nl_reg_rule;
2517 const struct ieee80211_reg_rule *reg_rule;
2518 const struct ieee80211_freq_range *freq_range;
2519 const struct ieee80211_power_rule *power_rule;
2520
2521 reg_rule = &cfg80211_regdomain->reg_rules[i];
2522 freq_range = &reg_rule->freq_range;
2523 power_rule = &reg_rule->power_rule;
2524
2525 nl_reg_rule = nla_nest_start(msg, i);
2526 if (!nl_reg_rule)
2527 goto nla_put_failure;
2528
2529 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2530 reg_rule->flags);
2531 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2532 freq_range->start_freq_khz);
2533 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2534 freq_range->end_freq_khz);
2535 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2536 freq_range->max_bandwidth_khz);
2537 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2538 power_rule->max_antenna_gain);
2539 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2540 power_rule->max_eirp);
2541
2542 nla_nest_end(msg, nl_reg_rule);
2543 }
2544
2545 nla_nest_end(msg, nl_reg_rules);
2546
2547 genlmsg_end(msg, hdr);
2548 err = genlmsg_unicast(msg, info->snd_pid);
2549 goto out;
2550
2551 nla_put_failure:
2552 genlmsg_cancel(msg, hdr);
2553 err = -EMSGSIZE;
2554 out:
2555 mutex_unlock(&cfg80211_mutex);
2556 return err;
2557 }
2558
2559 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2560 {
2561 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2562 struct nlattr *nl_reg_rule;
2563 char *alpha2 = NULL;
2564 int rem_reg_rules = 0, r = 0;
2565 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2566 struct ieee80211_regdomain *rd = NULL;
2567
2568 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2569 return -EINVAL;
2570
2571 if (!info->attrs[NL80211_ATTR_REG_RULES])
2572 return -EINVAL;
2573
2574 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2575
2576 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2577 rem_reg_rules) {
2578 num_rules++;
2579 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2580 return -EINVAL;
2581 }
2582
2583 mutex_lock(&cfg80211_mutex);
2584
2585 if (!reg_is_valid_request(alpha2)) {
2586 r = -EINVAL;
2587 goto bad_reg;
2588 }
2589
2590 size_of_regd = sizeof(struct ieee80211_regdomain) +
2591 (num_rules * sizeof(struct ieee80211_reg_rule));
2592
2593 rd = kzalloc(size_of_regd, GFP_KERNEL);
2594 if (!rd) {
2595 r = -ENOMEM;
2596 goto bad_reg;
2597 }
2598
2599 rd->n_reg_rules = num_rules;
2600 rd->alpha2[0] = alpha2[0];
2601 rd->alpha2[1] = alpha2[1];
2602
2603 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2604 rem_reg_rules) {
2605 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2606 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2607 reg_rule_policy);
2608 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2609 if (r)
2610 goto bad_reg;
2611
2612 rule_idx++;
2613
2614 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2615 r = -EINVAL;
2616 goto bad_reg;
2617 }
2618 }
2619
2620 BUG_ON(rule_idx != num_rules);
2621
2622 r = set_regdom(rd);
2623
2624 mutex_unlock(&cfg80211_mutex);
2625
2626 return r;
2627
2628 bad_reg:
2629 mutex_unlock(&cfg80211_mutex);
2630 kfree(rd);
2631 return r;
2632 }
2633
2634 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2635 {
2636 struct cfg80211_registered_device *drv;
2637 struct net_device *dev;
2638 struct cfg80211_scan_request *request;
2639 struct cfg80211_ssid *ssid;
2640 struct ieee80211_channel *channel;
2641 struct nlattr *attr;
2642 struct wiphy *wiphy;
2643 int err, tmp, n_ssids = 0, n_channels = 0, i;
2644 enum ieee80211_band band;
2645 size_t ie_len;
2646
2647 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2648 return -EINVAL;
2649
2650 rtnl_lock();
2651
2652 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2653 if (err)
2654 goto out_rtnl;
2655
2656 wiphy = &drv->wiphy;
2657
2658 if (!drv->ops->scan) {
2659 err = -EOPNOTSUPP;
2660 goto out;
2661 }
2662
2663 if (!netif_running(dev)) {
2664 err = -ENETDOWN;
2665 goto out;
2666 }
2667
2668 if (drv->scan_req) {
2669 err = -EBUSY;
2670 goto out;
2671 }
2672
2673 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2674 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
2675 n_channels++;
2676 if (!n_channels) {
2677 err = -EINVAL;
2678 goto out;
2679 }
2680 } else {
2681 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2682 if (wiphy->bands[band])
2683 n_channels += wiphy->bands[band]->n_channels;
2684 }
2685
2686 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2687 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2688 n_ssids++;
2689
2690 if (n_ssids > wiphy->max_scan_ssids) {
2691 err = -EINVAL;
2692 goto out;
2693 }
2694
2695 if (info->attrs[NL80211_ATTR_IE])
2696 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2697 else
2698 ie_len = 0;
2699
2700 if (ie_len > wiphy->max_scan_ie_len) {
2701 err = -EINVAL;
2702 goto out;
2703 }
2704
2705 request = kzalloc(sizeof(*request)
2706 + sizeof(*ssid) * n_ssids
2707 + sizeof(channel) * n_channels
2708 + ie_len, GFP_KERNEL);
2709 if (!request) {
2710 err = -ENOMEM;
2711 goto out;
2712 }
2713
2714 request->channels = (void *)((char *)request + sizeof(*request));
2715 request->n_channels = n_channels;
2716 if (n_ssids)
2717 request->ssids = (void *)(request->channels + n_channels);
2718 request->n_ssids = n_ssids;
2719 if (ie_len) {
2720 if (request->ssids)
2721 request->ie = (void *)(request->ssids + n_ssids);
2722 else
2723 request->ie = (void *)(request->channels + n_channels);
2724 }
2725
2726 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2727 /* user specified, bail out if channel not found */
2728 request->n_channels = n_channels;
2729 i = 0;
2730 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2731 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2732 if (!request->channels[i]) {
2733 err = -EINVAL;
2734 goto out_free;
2735 }
2736 i++;
2737 }
2738 } else {
2739 /* all channels */
2740 i = 0;
2741 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2742 int j;
2743 if (!wiphy->bands[band])
2744 continue;
2745 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2746 request->channels[i] = &wiphy->bands[band]->channels[j];
2747 i++;
2748 }
2749 }
2750 }
2751
2752 i = 0;
2753 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2754 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2755 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2756 err = -EINVAL;
2757 goto out_free;
2758 }
2759 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2760 request->ssids[i].ssid_len = nla_len(attr);
2761 i++;
2762 }
2763 }
2764
2765 if (info->attrs[NL80211_ATTR_IE]) {
2766 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2767 memcpy((void *)request->ie,
2768 nla_data(info->attrs[NL80211_ATTR_IE]),
2769 request->ie_len);
2770 }
2771
2772 request->ifidx = dev->ifindex;
2773 request->wiphy = &drv->wiphy;
2774
2775 drv->scan_req = request;
2776 err = drv->ops->scan(&drv->wiphy, dev, request);
2777
2778 out_free:
2779 if (err) {
2780 drv->scan_req = NULL;
2781 kfree(request);
2782 }
2783 out:
2784 cfg80211_put_dev(drv);
2785 dev_put(dev);
2786 out_rtnl:
2787 rtnl_unlock();
2788
2789 return err;
2790 }
2791
2792 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
2793 struct cfg80211_registered_device *rdev,
2794 struct net_device *dev,
2795 struct cfg80211_bss *res)
2796 {
2797 void *hdr;
2798 struct nlattr *bss;
2799
2800 hdr = nl80211hdr_put(msg, pid, seq, flags,
2801 NL80211_CMD_NEW_SCAN_RESULTS);
2802 if (!hdr)
2803 return -1;
2804
2805 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
2806 rdev->bss_generation);
2807 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2808
2809 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
2810 if (!bss)
2811 goto nla_put_failure;
2812 if (!is_zero_ether_addr(res->bssid))
2813 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
2814 if (res->information_elements && res->len_information_elements)
2815 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
2816 res->len_information_elements,
2817 res->information_elements);
2818 if (res->tsf)
2819 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
2820 if (res->beacon_interval)
2821 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
2822 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
2823 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
2824
2825 switch (rdev->wiphy.signal_type) {
2826 case CFG80211_SIGNAL_TYPE_MBM:
2827 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
2828 break;
2829 case CFG80211_SIGNAL_TYPE_UNSPEC:
2830 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
2831 break;
2832 default:
2833 break;
2834 }
2835
2836 nla_nest_end(msg, bss);
2837
2838 return genlmsg_end(msg, hdr);
2839
2840 nla_put_failure:
2841 genlmsg_cancel(msg, hdr);
2842 return -EMSGSIZE;
2843 }
2844
2845 static int nl80211_dump_scan(struct sk_buff *skb,
2846 struct netlink_callback *cb)
2847 {
2848 struct cfg80211_registered_device *dev;
2849 struct net_device *netdev;
2850 struct cfg80211_internal_bss *scan;
2851 int ifidx = cb->args[0];
2852 int start = cb->args[1], idx = 0;
2853 int err;
2854
2855 if (!ifidx) {
2856 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2857 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2858 nl80211_policy);
2859 if (err)
2860 return err;
2861
2862 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2863 return -EINVAL;
2864
2865 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2866 if (!ifidx)
2867 return -EINVAL;
2868 cb->args[0] = ifidx;
2869 }
2870
2871 netdev = dev_get_by_index(&init_net, ifidx);
2872 if (!netdev)
2873 return -ENODEV;
2874
2875 dev = cfg80211_get_dev_from_ifindex(ifidx);
2876 if (IS_ERR(dev)) {
2877 err = PTR_ERR(dev);
2878 goto out_put_netdev;
2879 }
2880
2881 spin_lock_bh(&dev->bss_lock);
2882 cfg80211_bss_expire(dev);
2883
2884 list_for_each_entry(scan, &dev->bss_list, list) {
2885 if (++idx <= start)
2886 continue;
2887 if (nl80211_send_bss(skb,
2888 NETLINK_CB(cb->skb).pid,
2889 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2890 dev, netdev, &scan->pub) < 0) {
2891 idx--;
2892 goto out;
2893 }
2894 }
2895
2896 out:
2897 spin_unlock_bh(&dev->bss_lock);
2898
2899 cb->args[1] = idx;
2900 err = skb->len;
2901 cfg80211_put_dev(dev);
2902 out_put_netdev:
2903 dev_put(netdev);
2904
2905 return err;
2906 }
2907
2908 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
2909 {
2910 return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
2911 auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
2912 auth_type == NL80211_AUTHTYPE_FT ||
2913 auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
2914 }
2915
2916 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
2917 {
2918 struct cfg80211_registered_device *drv;
2919 struct net_device *dev;
2920 struct cfg80211_auth_request req;
2921 struct wiphy *wiphy;
2922 int err;
2923
2924 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2925 return -EINVAL;
2926
2927 if (!info->attrs[NL80211_ATTR_MAC])
2928 return -EINVAL;
2929
2930 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
2931 return -EINVAL;
2932
2933 rtnl_lock();
2934
2935 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2936 if (err)
2937 goto unlock_rtnl;
2938
2939 if (!drv->ops->auth) {
2940 err = -EOPNOTSUPP;
2941 goto out;
2942 }
2943
2944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
2945 err = -EOPNOTSUPP;
2946 goto out;
2947 }
2948
2949 if (!netif_running(dev)) {
2950 err = -ENETDOWN;
2951 goto out;
2952 }
2953
2954 wiphy = &drv->wiphy;
2955 memset(&req, 0, sizeof(req));
2956
2957 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2958
2959 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2960 req.chan = ieee80211_get_channel(
2961 wiphy,
2962 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2963 if (!req.chan) {
2964 err = -EINVAL;
2965 goto out;
2966 }
2967 }
2968
2969 if (info->attrs[NL80211_ATTR_SSID]) {
2970 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2971 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
2972 }
2973
2974 if (info->attrs[NL80211_ATTR_IE]) {
2975 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
2976 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2977 }
2978
2979 req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
2980 if (!nl80211_valid_auth_type(req.auth_type)) {
2981 err = -EINVAL;
2982 goto out;
2983 }
2984
2985 err = drv->ops->auth(&drv->wiphy, dev, &req);
2986
2987 out:
2988 cfg80211_put_dev(drv);
2989 dev_put(dev);
2990 unlock_rtnl:
2991 rtnl_unlock();
2992 return err;
2993 }
2994
2995 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
2996 {
2997 struct cfg80211_registered_device *drv;
2998 struct net_device *dev;
2999 struct cfg80211_assoc_request req;
3000 struct wiphy *wiphy;
3001 int err;
3002
3003 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3004 return -EINVAL;
3005
3006 if (!info->attrs[NL80211_ATTR_MAC] ||
3007 !info->attrs[NL80211_ATTR_SSID])
3008 return -EINVAL;
3009
3010 rtnl_lock();
3011
3012 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3013 if (err)
3014 goto unlock_rtnl;
3015
3016 if (!drv->ops->assoc) {
3017 err = -EOPNOTSUPP;
3018 goto out;
3019 }
3020
3021 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3022 err = -EOPNOTSUPP;
3023 goto out;
3024 }
3025
3026 if (!netif_running(dev)) {
3027 err = -ENETDOWN;
3028 goto out;
3029 }
3030
3031 wiphy = &drv->wiphy;
3032 memset(&req, 0, sizeof(req));
3033
3034 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3035
3036 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3037 req.chan = ieee80211_get_channel(
3038 wiphy,
3039 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3040 if (!req.chan) {
3041 err = -EINVAL;
3042 goto out;
3043 }
3044 }
3045
3046 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3047 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3048
3049 if (info->attrs[NL80211_ATTR_IE]) {
3050 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3051 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3052 }
3053
3054 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3055 enum nl80211_mfp use_mfp =
3056 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3057 if (use_mfp == NL80211_MFP_REQUIRED)
3058 req.use_mfp = true;
3059 else if (use_mfp != NL80211_MFP_NO) {
3060 err = -EINVAL;
3061 goto out;
3062 }
3063 }
3064
3065 req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3066
3067 err = drv->ops->assoc(&drv->wiphy, dev, &req);
3068
3069 out:
3070 cfg80211_put_dev(drv);
3071 dev_put(dev);
3072 unlock_rtnl:
3073 rtnl_unlock();
3074 return err;
3075 }
3076
3077 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3078 {
3079 struct cfg80211_registered_device *drv;
3080 struct net_device *dev;
3081 struct cfg80211_deauth_request req;
3082 struct wiphy *wiphy;
3083 int err;
3084
3085 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3086 return -EINVAL;
3087
3088 if (!info->attrs[NL80211_ATTR_MAC])
3089 return -EINVAL;
3090
3091 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3092 return -EINVAL;
3093
3094 rtnl_lock();
3095
3096 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3097 if (err)
3098 goto unlock_rtnl;
3099
3100 if (!drv->ops->deauth) {
3101 err = -EOPNOTSUPP;
3102 goto out;
3103 }
3104
3105 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3106 err = -EOPNOTSUPP;
3107 goto out;
3108 }
3109
3110 if (!netif_running(dev)) {
3111 err = -ENETDOWN;
3112 goto out;
3113 }
3114
3115 wiphy = &drv->wiphy;
3116 memset(&req, 0, sizeof(req));
3117
3118 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3119
3120 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3121 if (req.reason_code == 0) {
3122 /* Reason Code 0 is reserved */
3123 err = -EINVAL;
3124 goto out;
3125 }
3126
3127 if (info->attrs[NL80211_ATTR_IE]) {
3128 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3129 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3130 }
3131
3132 err = drv->ops->deauth(&drv->wiphy, dev, &req);
3133
3134 out:
3135 cfg80211_put_dev(drv);
3136 dev_put(dev);
3137 unlock_rtnl:
3138 rtnl_unlock();
3139 return err;
3140 }
3141
3142 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3143 {
3144 struct cfg80211_registered_device *drv;
3145 struct net_device *dev;
3146 struct cfg80211_disassoc_request req;
3147 struct wiphy *wiphy;
3148 int err;
3149
3150 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3151 return -EINVAL;
3152
3153 if (!info->attrs[NL80211_ATTR_MAC])
3154 return -EINVAL;
3155
3156 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3157 return -EINVAL;
3158
3159 rtnl_lock();
3160
3161 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3162 if (err)
3163 goto unlock_rtnl;
3164
3165 if (!drv->ops->disassoc) {
3166 err = -EOPNOTSUPP;
3167 goto out;
3168 }
3169
3170 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3171 err = -EOPNOTSUPP;
3172 goto out;
3173 }
3174
3175 if (!netif_running(dev)) {
3176 err = -ENETDOWN;
3177 goto out;
3178 }
3179
3180 wiphy = &drv->wiphy;
3181 memset(&req, 0, sizeof(req));
3182
3183 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3184
3185 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3186 if (req.reason_code == 0) {
3187 /* Reason Code 0 is reserved */
3188 err = -EINVAL;
3189 goto out;
3190 }
3191
3192 if (info->attrs[NL80211_ATTR_IE]) {
3193 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3194 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3195 }
3196
3197 err = drv->ops->disassoc(&drv->wiphy, dev, &req);
3198
3199 out:
3200 cfg80211_put_dev(drv);
3201 dev_put(dev);
3202 unlock_rtnl:
3203 rtnl_unlock();
3204 return err;
3205 }
3206
3207 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3208 {
3209 struct cfg80211_registered_device *drv;
3210 struct net_device *dev;
3211 struct cfg80211_ibss_params ibss;
3212 struct wiphy *wiphy;
3213 int err;
3214
3215 memset(&ibss, 0, sizeof(ibss));
3216
3217 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3218 return -EINVAL;
3219
3220 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3221 !info->attrs[NL80211_ATTR_SSID] ||
3222 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3223 return -EINVAL;
3224
3225 ibss.beacon_interval = 100;
3226
3227 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3228 ibss.beacon_interval =
3229 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3230 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3231 return -EINVAL;
3232 }
3233
3234 rtnl_lock();
3235
3236 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3237 if (err)
3238 goto unlock_rtnl;
3239
3240 if (!drv->ops->join_ibss) {
3241 err = -EOPNOTSUPP;
3242 goto out;
3243 }
3244
3245 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3246 err = -EOPNOTSUPP;
3247 goto out;
3248 }
3249
3250 if (!netif_running(dev)) {
3251 err = -ENETDOWN;
3252 goto out;
3253 }
3254
3255 wiphy = &drv->wiphy;
3256
3257 if (info->attrs[NL80211_ATTR_MAC])
3258 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3259 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3260 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3261
3262 if (info->attrs[NL80211_ATTR_IE]) {
3263 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3264 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3265 }
3266
3267 ibss.channel = ieee80211_get_channel(wiphy,
3268 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3269 if (!ibss.channel ||
3270 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3271 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3272 err = -EINVAL;
3273 goto out;
3274 }
3275
3276 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3277
3278 err = cfg80211_join_ibss(drv, dev, &ibss);
3279
3280 out:
3281 cfg80211_put_dev(drv);
3282 dev_put(dev);
3283 unlock_rtnl:
3284 rtnl_unlock();
3285 return err;
3286 }
3287
3288 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3289 {
3290 struct cfg80211_registered_device *drv;
3291 struct net_device *dev;
3292 int err;
3293
3294 rtnl_lock();
3295
3296 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3297 if (err)
3298 goto unlock_rtnl;
3299
3300 if (!drv->ops->leave_ibss) {
3301 err = -EOPNOTSUPP;
3302 goto out;
3303 }
3304
3305 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3306 err = -EOPNOTSUPP;
3307 goto out;
3308 }
3309
3310 if (!netif_running(dev)) {
3311 err = -ENETDOWN;
3312 goto out;
3313 }
3314
3315 err = cfg80211_leave_ibss(drv, dev, false);
3316
3317 out:
3318 cfg80211_put_dev(drv);
3319 dev_put(dev);
3320 unlock_rtnl:
3321 rtnl_unlock();
3322 return err;
3323 }
3324
3325 static struct genl_ops nl80211_ops[] = {
3326 {
3327 .cmd = NL80211_CMD_GET_WIPHY,
3328 .doit = nl80211_get_wiphy,
3329 .dumpit = nl80211_dump_wiphy,
3330 .policy = nl80211_policy,
3331 /* can be retrieved by unprivileged users */
3332 },
3333 {
3334 .cmd = NL80211_CMD_SET_WIPHY,
3335 .doit = nl80211_set_wiphy,
3336 .policy = nl80211_policy,
3337 .flags = GENL_ADMIN_PERM,
3338 },
3339 {
3340 .cmd = NL80211_CMD_GET_INTERFACE,
3341 .doit = nl80211_get_interface,
3342 .dumpit = nl80211_dump_interface,
3343 .policy = nl80211_policy,
3344 /* can be retrieved by unprivileged users */
3345 },
3346 {
3347 .cmd = NL80211_CMD_SET_INTERFACE,
3348 .doit = nl80211_set_interface,
3349 .policy = nl80211_policy,
3350 .flags = GENL_ADMIN_PERM,
3351 },
3352 {
3353 .cmd = NL80211_CMD_NEW_INTERFACE,
3354 .doit = nl80211_new_interface,
3355 .policy = nl80211_policy,
3356 .flags = GENL_ADMIN_PERM,
3357 },
3358 {
3359 .cmd = NL80211_CMD_DEL_INTERFACE,
3360 .doit = nl80211_del_interface,
3361 .policy = nl80211_policy,
3362 .flags = GENL_ADMIN_PERM,
3363 },
3364 {
3365 .cmd = NL80211_CMD_GET_KEY,
3366 .doit = nl80211_get_key,
3367 .policy = nl80211_policy,
3368 .flags = GENL_ADMIN_PERM,
3369 },
3370 {
3371 .cmd = NL80211_CMD_SET_KEY,
3372 .doit = nl80211_set_key,
3373 .policy = nl80211_policy,
3374 .flags = GENL_ADMIN_PERM,
3375 },
3376 {
3377 .cmd = NL80211_CMD_NEW_KEY,
3378 .doit = nl80211_new_key,
3379 .policy = nl80211_policy,
3380 .flags = GENL_ADMIN_PERM,
3381 },
3382 {
3383 .cmd = NL80211_CMD_DEL_KEY,
3384 .doit = nl80211_del_key,
3385 .policy = nl80211_policy,
3386 .flags = GENL_ADMIN_PERM,
3387 },
3388 {
3389 .cmd = NL80211_CMD_SET_BEACON,
3390 .policy = nl80211_policy,
3391 .flags = GENL_ADMIN_PERM,
3392 .doit = nl80211_addset_beacon,
3393 },
3394 {
3395 .cmd = NL80211_CMD_NEW_BEACON,
3396 .policy = nl80211_policy,
3397 .flags = GENL_ADMIN_PERM,
3398 .doit = nl80211_addset_beacon,
3399 },
3400 {
3401 .cmd = NL80211_CMD_DEL_BEACON,
3402 .policy = nl80211_policy,
3403 .flags = GENL_ADMIN_PERM,
3404 .doit = nl80211_del_beacon,
3405 },
3406 {
3407 .cmd = NL80211_CMD_GET_STATION,
3408 .doit = nl80211_get_station,
3409 .dumpit = nl80211_dump_station,
3410 .policy = nl80211_policy,
3411 },
3412 {
3413 .cmd = NL80211_CMD_SET_STATION,
3414 .doit = nl80211_set_station,
3415 .policy = nl80211_policy,
3416 .flags = GENL_ADMIN_PERM,
3417 },
3418 {
3419 .cmd = NL80211_CMD_NEW_STATION,
3420 .doit = nl80211_new_station,
3421 .policy = nl80211_policy,
3422 .flags = GENL_ADMIN_PERM,
3423 },
3424 {
3425 .cmd = NL80211_CMD_DEL_STATION,
3426 .doit = nl80211_del_station,
3427 .policy = nl80211_policy,
3428 .flags = GENL_ADMIN_PERM,
3429 },
3430 {
3431 .cmd = NL80211_CMD_GET_MPATH,
3432 .doit = nl80211_get_mpath,
3433 .dumpit = nl80211_dump_mpath,
3434 .policy = nl80211_policy,
3435 .flags = GENL_ADMIN_PERM,
3436 },
3437 {
3438 .cmd = NL80211_CMD_SET_MPATH,
3439 .doit = nl80211_set_mpath,
3440 .policy = nl80211_policy,
3441 .flags = GENL_ADMIN_PERM,
3442 },
3443 {
3444 .cmd = NL80211_CMD_NEW_MPATH,
3445 .doit = nl80211_new_mpath,
3446 .policy = nl80211_policy,
3447 .flags = GENL_ADMIN_PERM,
3448 },
3449 {
3450 .cmd = NL80211_CMD_DEL_MPATH,
3451 .doit = nl80211_del_mpath,
3452 .policy = nl80211_policy,
3453 .flags = GENL_ADMIN_PERM,
3454 },
3455 {
3456 .cmd = NL80211_CMD_SET_BSS,
3457 .doit = nl80211_set_bss,
3458 .policy = nl80211_policy,
3459 .flags = GENL_ADMIN_PERM,
3460 },
3461 {
3462 .cmd = NL80211_CMD_GET_REG,
3463 .doit = nl80211_get_reg,
3464 .policy = nl80211_policy,
3465 /* can be retrieved by unprivileged users */
3466 },
3467 {
3468 .cmd = NL80211_CMD_SET_REG,
3469 .doit = nl80211_set_reg,
3470 .policy = nl80211_policy,
3471 .flags = GENL_ADMIN_PERM,
3472 },
3473 {
3474 .cmd = NL80211_CMD_REQ_SET_REG,
3475 .doit = nl80211_req_set_reg,
3476 .policy = nl80211_policy,
3477 .flags = GENL_ADMIN_PERM,
3478 },
3479 {
3480 .cmd = NL80211_CMD_GET_MESH_PARAMS,
3481 .doit = nl80211_get_mesh_params,
3482 .policy = nl80211_policy,
3483 /* can be retrieved by unprivileged users */
3484 },
3485 {
3486 .cmd = NL80211_CMD_SET_MESH_PARAMS,
3487 .doit = nl80211_set_mesh_params,
3488 .policy = nl80211_policy,
3489 .flags = GENL_ADMIN_PERM,
3490 },
3491 {
3492 .cmd = NL80211_CMD_TRIGGER_SCAN,
3493 .doit = nl80211_trigger_scan,
3494 .policy = nl80211_policy,
3495 .flags = GENL_ADMIN_PERM,
3496 },
3497 {
3498 .cmd = NL80211_CMD_GET_SCAN,
3499 .policy = nl80211_policy,
3500 .dumpit = nl80211_dump_scan,
3501 },
3502 {
3503 .cmd = NL80211_CMD_AUTHENTICATE,
3504 .doit = nl80211_authenticate,
3505 .policy = nl80211_policy,
3506 .flags = GENL_ADMIN_PERM,
3507 },
3508 {
3509 .cmd = NL80211_CMD_ASSOCIATE,
3510 .doit = nl80211_associate,
3511 .policy = nl80211_policy,
3512 .flags = GENL_ADMIN_PERM,
3513 },
3514 {
3515 .cmd = NL80211_CMD_DEAUTHENTICATE,
3516 .doit = nl80211_deauthenticate,
3517 .policy = nl80211_policy,
3518 .flags = GENL_ADMIN_PERM,
3519 },
3520 {
3521 .cmd = NL80211_CMD_DISASSOCIATE,
3522 .doit = nl80211_disassociate,
3523 .policy = nl80211_policy,
3524 .flags = GENL_ADMIN_PERM,
3525 },
3526 {
3527 .cmd = NL80211_CMD_JOIN_IBSS,
3528 .doit = nl80211_join_ibss,
3529 .policy = nl80211_policy,
3530 .flags = GENL_ADMIN_PERM,
3531 },
3532 {
3533 .cmd = NL80211_CMD_LEAVE_IBSS,
3534 .doit = nl80211_leave_ibss,
3535 .policy = nl80211_policy,
3536 .flags = GENL_ADMIN_PERM,
3537 },
3538 };
3539 static struct genl_multicast_group nl80211_mlme_mcgrp = {
3540 .name = "mlme",
3541 };
3542
3543 /* multicast groups */
3544 static struct genl_multicast_group nl80211_config_mcgrp = {
3545 .name = "config",
3546 };
3547 static struct genl_multicast_group nl80211_scan_mcgrp = {
3548 .name = "scan",
3549 };
3550 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
3551 .name = "regulatory",
3552 };
3553
3554 /* notification functions */
3555
3556 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
3557 {
3558 struct sk_buff *msg;
3559
3560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3561 if (!msg)
3562 return;
3563
3564 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
3565 nlmsg_free(msg);
3566 return;
3567 }
3568
3569 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
3570 }
3571
3572 static int nl80211_add_scan_req(struct sk_buff *msg,
3573 struct cfg80211_registered_device *rdev)
3574 {
3575 struct cfg80211_scan_request *req = rdev->scan_req;
3576 struct nlattr *nest;
3577 int i;
3578
3579 if (WARN_ON(!req))
3580 return 0;
3581
3582 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
3583 if (!nest)
3584 goto nla_put_failure;
3585 for (i = 0; i < req->n_ssids; i++)
3586 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
3587 nla_nest_end(msg, nest);
3588
3589 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
3590 if (!nest)
3591 goto nla_put_failure;
3592 for (i = 0; i < req->n_channels; i++)
3593 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
3594 nla_nest_end(msg, nest);
3595
3596 if (req->ie)
3597 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
3598
3599 return 0;
3600 nla_put_failure:
3601 return -ENOBUFS;
3602 }
3603
3604 static int nl80211_send_scan_donemsg(struct sk_buff *msg,
3605 struct cfg80211_registered_device *rdev,
3606 struct net_device *netdev,
3607 u32 pid, u32 seq, int flags,
3608 u32 cmd)
3609 {
3610 void *hdr;
3611
3612 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
3613 if (!hdr)
3614 return -1;
3615
3616 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3617 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3618
3619 /* ignore errors and send incomplete event anyway */
3620 nl80211_add_scan_req(msg, rdev);
3621
3622 return genlmsg_end(msg, hdr);
3623
3624 nla_put_failure:
3625 genlmsg_cancel(msg, hdr);
3626 return -EMSGSIZE;
3627 }
3628
3629 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
3630 struct net_device *netdev)
3631 {
3632 struct sk_buff *msg;
3633
3634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3635 if (!msg)
3636 return;
3637
3638 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3639 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
3640 nlmsg_free(msg);
3641 return;
3642 }
3643
3644 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3645 }
3646
3647 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
3648 struct net_device *netdev)
3649 {
3650 struct sk_buff *msg;
3651
3652 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3653 if (!msg)
3654 return;
3655
3656 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3657 NL80211_CMD_SCAN_ABORTED) < 0) {
3658 nlmsg_free(msg);
3659 return;
3660 }
3661
3662 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3663 }
3664
3665 /*
3666 * This can happen on global regulatory changes or device specific settings
3667 * based on custom world regulatory domains.
3668 */
3669 void nl80211_send_reg_change_event(struct regulatory_request *request)
3670 {
3671 struct sk_buff *msg;
3672 void *hdr;
3673
3674 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3675 if (!msg)
3676 return;
3677
3678 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
3679 if (!hdr) {
3680 nlmsg_free(msg);
3681 return;
3682 }
3683
3684 /* Userspace can always count this one always being set */
3685 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
3686
3687 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
3688 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3689 NL80211_REGDOM_TYPE_WORLD);
3690 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
3691 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3692 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
3693 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
3694 request->intersect)
3695 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3696 NL80211_REGDOM_TYPE_INTERSECTION);
3697 else {
3698 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3699 NL80211_REGDOM_TYPE_COUNTRY);
3700 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
3701 }
3702
3703 if (wiphy_idx_valid(request->wiphy_idx))
3704 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
3705
3706 if (genlmsg_end(msg, hdr) < 0) {
3707 nlmsg_free(msg);
3708 return;
3709 }
3710
3711 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
3712
3713 return;
3714
3715 nla_put_failure:
3716 genlmsg_cancel(msg, hdr);
3717 nlmsg_free(msg);
3718 }
3719
3720 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
3721 struct net_device *netdev,
3722 const u8 *buf, size_t len,
3723 enum nl80211_commands cmd)
3724 {
3725 struct sk_buff *msg;
3726 void *hdr;
3727
3728 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3729 if (!msg)
3730 return;
3731
3732 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3733 if (!hdr) {
3734 nlmsg_free(msg);
3735 return;
3736 }
3737
3738 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3739 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3740 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
3741
3742 if (genlmsg_end(msg, hdr) < 0) {
3743 nlmsg_free(msg);
3744 return;
3745 }
3746
3747 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3748 return;
3749
3750 nla_put_failure:
3751 genlmsg_cancel(msg, hdr);
3752 nlmsg_free(msg);
3753 }
3754
3755 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
3756 struct net_device *netdev, const u8 *buf, size_t len)
3757 {
3758 nl80211_send_mlme_event(rdev, netdev, buf, len,
3759 NL80211_CMD_AUTHENTICATE);
3760 }
3761
3762 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
3763 struct net_device *netdev, const u8 *buf,
3764 size_t len)
3765 {
3766 nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
3767 }
3768
3769 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
3770 struct net_device *netdev, const u8 *buf, size_t len)
3771 {
3772 nl80211_send_mlme_event(rdev, netdev, buf, len,
3773 NL80211_CMD_DEAUTHENTICATE);
3774 }
3775
3776 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
3777 struct net_device *netdev, const u8 *buf,
3778 size_t len)
3779 {
3780 nl80211_send_mlme_event(rdev, netdev, buf, len,
3781 NL80211_CMD_DISASSOCIATE);
3782 }
3783
3784 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
3785 struct net_device *netdev, int cmd,
3786 const u8 *addr)
3787 {
3788 struct sk_buff *msg;
3789 void *hdr;
3790
3791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3792 if (!msg)
3793 return;
3794
3795 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3796 if (!hdr) {
3797 nlmsg_free(msg);
3798 return;
3799 }
3800
3801 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3802 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3803 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
3804 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3805
3806 if (genlmsg_end(msg, hdr) < 0) {
3807 nlmsg_free(msg);
3808 return;
3809 }
3810
3811 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3812 return;
3813
3814 nla_put_failure:
3815 genlmsg_cancel(msg, hdr);
3816 nlmsg_free(msg);
3817 }
3818
3819 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
3820 struct net_device *netdev, const u8 *addr)
3821 {
3822 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
3823 addr);
3824 }
3825
3826 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
3827 struct net_device *netdev, const u8 *addr)
3828 {
3829 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
3830 }
3831
3832 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
3833 struct net_device *netdev, const u8 *bssid,
3834 gfp_t gfp)
3835 {
3836 struct sk_buff *msg;
3837 void *hdr;
3838
3839 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3840 if (!msg)
3841 return;
3842
3843 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
3844 if (!hdr) {
3845 nlmsg_free(msg);
3846 return;
3847 }
3848
3849 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3850 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3851 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
3852
3853 if (genlmsg_end(msg, hdr) < 0) {
3854 nlmsg_free(msg);
3855 return;
3856 }
3857
3858 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3859 return;
3860
3861 nla_put_failure:
3862 genlmsg_cancel(msg, hdr);
3863 nlmsg_free(msg);
3864 }
3865
3866 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
3867 struct net_device *netdev, const u8 *addr,
3868 enum nl80211_key_type key_type, int key_id,
3869 const u8 *tsc)
3870 {
3871 struct sk_buff *msg;
3872 void *hdr;
3873
3874 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3875 if (!msg)
3876 return;
3877
3878 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
3879 if (!hdr) {
3880 nlmsg_free(msg);
3881 return;
3882 }
3883
3884 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3885 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3886 if (addr)
3887 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3888 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
3889 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
3890 if (tsc)
3891 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
3892
3893 if (genlmsg_end(msg, hdr) < 0) {
3894 nlmsg_free(msg);
3895 return;
3896 }
3897
3898 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3899 return;
3900
3901 nla_put_failure:
3902 genlmsg_cancel(msg, hdr);
3903 nlmsg_free(msg);
3904 }
3905
3906 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
3907 struct ieee80211_channel *channel_before,
3908 struct ieee80211_channel *channel_after)
3909 {
3910 struct sk_buff *msg;
3911 void *hdr;
3912 struct nlattr *nl_freq;
3913
3914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3915 if (!msg)
3916 return;
3917
3918 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
3919 if (!hdr) {
3920 nlmsg_free(msg);
3921 return;
3922 }
3923
3924 /*
3925 * Since we are applying the beacon hint to a wiphy we know its
3926 * wiphy_idx is valid
3927 */
3928 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
3929
3930 /* Before */
3931 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
3932 if (!nl_freq)
3933 goto nla_put_failure;
3934 if (nl80211_msg_put_channel(msg, channel_before))
3935 goto nla_put_failure;
3936 nla_nest_end(msg, nl_freq);
3937
3938 /* After */
3939 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
3940 if (!nl_freq)
3941 goto nla_put_failure;
3942 if (nl80211_msg_put_channel(msg, channel_after))
3943 goto nla_put_failure;
3944 nla_nest_end(msg, nl_freq);
3945
3946 if (genlmsg_end(msg, hdr) < 0) {
3947 nlmsg_free(msg);
3948 return;
3949 }
3950
3951 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
3952
3953 return;
3954
3955 nla_put_failure:
3956 genlmsg_cancel(msg, hdr);
3957 nlmsg_free(msg);
3958 }
3959
3960 /* initialisation/exit functions */
3961
3962 int nl80211_init(void)
3963 {
3964 int err;
3965
3966 err = genl_register_family_with_ops(&nl80211_fam,
3967 nl80211_ops, ARRAY_SIZE(nl80211_ops));
3968 if (err)
3969 return err;
3970
3971 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
3972 if (err)
3973 goto err_out;
3974
3975 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
3976 if (err)
3977 goto err_out;
3978
3979 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
3980 if (err)
3981 goto err_out;
3982
3983 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
3984 if (err)
3985 goto err_out;
3986
3987 return 0;
3988 err_out:
3989 genl_unregister_family(&nl80211_fam);
3990 return err;
3991 }
3992
3993 void nl80211_exit(void)
3994 {
3995 genl_unregister_family(&nl80211_fam);
3996 }
Linux kernel - Deliverables
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