?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86: Fix warning in pvclock.c
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blob43bdb1372caee29772f63397dd7ce1f7e7edd963
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 mutex_unlock(&cfg80211_mutex);
451 result = PTR_ERR(rdev);
452 goto unlock;
453 }
454
455 mutex_lock(&rdev->mtx);
456
457 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
458 result = cfg80211_dev_rename(
459 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
460
461 mutex_unlock(&cfg80211_mutex);
462
463 if (result)
464 goto bad_res;
465
466 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
467 struct ieee80211_txq_params txq_params;
468 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
469
470 if (!rdev->ops->set_txq_params) {
471 result = -EOPNOTSUPP;
472 goto bad_res;
473 }
474
475 nla_for_each_nested(nl_txq_params,
476 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
477 rem_txq_params) {
478 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
479 nla_data(nl_txq_params),
480 nla_len(nl_txq_params),
481 txq_params_policy);
482 result = parse_txq_params(tb, &txq_params);
483 if (result)
484 goto bad_res;
485
486 result = rdev->ops->set_txq_params(&rdev->wiphy,
487 &txq_params);
488 if (result)
489 goto bad_res;
490 }
491 }
492
493 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
494 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
495 struct ieee80211_channel *chan;
496 struct ieee80211_sta_ht_cap *ht_cap;
497 u32 freq;
498
499 if (!rdev->ops->set_channel) {
500 result = -EOPNOTSUPP;
501 goto bad_res;
502 }
503
504 result = -EINVAL;
505
506 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
507 channel_type = nla_get_u32(info->attrs[
508 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
509 if (channel_type != NL80211_CHAN_NO_HT &&
510 channel_type != NL80211_CHAN_HT20 &&
511 channel_type != NL80211_CHAN_HT40PLUS &&
512 channel_type != NL80211_CHAN_HT40MINUS)
513 goto bad_res;
514 }
515
516 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
517 chan = ieee80211_get_channel(&rdev->wiphy, freq);
518
519 /* Primary channel not allowed */
520 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
521 goto bad_res;
522
523 if (channel_type == NL80211_CHAN_HT40MINUS &&
524 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
525 goto bad_res;
526 else if (channel_type == NL80211_CHAN_HT40PLUS &&
527 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
528 goto bad_res;
529
530 /*
531 * At this point we know if that if HT40 was requested
532 * we are allowed to use it and the extension channel
533 * exists.
534 */
535
536 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
537
538 /* no HT capabilities or intolerant */
539 if (channel_type != NL80211_CHAN_NO_HT) {
540 if (!ht_cap->ht_supported)
541 goto bad_res;
542 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
543 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
544 goto bad_res;
545 }
546
547 result = rdev->ops->set_channel(&rdev->wiphy, chan,
548 channel_type);
549 if (result)
550 goto bad_res;
551 }
552
553 changed = 0;
554
555 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
556 retry_short = nla_get_u8(
557 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
558 if (retry_short == 0) {
559 result = -EINVAL;
560 goto bad_res;
561 }
562 changed |= WIPHY_PARAM_RETRY_SHORT;
563 }
564
565 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
566 retry_long = nla_get_u8(
567 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
568 if (retry_long == 0) {
569 result = -EINVAL;
570 goto bad_res;
571 }
572 changed |= WIPHY_PARAM_RETRY_LONG;
573 }
574
575 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
576 frag_threshold = nla_get_u32(
577 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
578 if (frag_threshold < 256) {
579 result = -EINVAL;
580 goto bad_res;
581 }
582 if (frag_threshold != (u32) -1) {
583 /*
584 * Fragments (apart from the last one) are required to
585 * have even length. Make the fragmentation code
586 * simpler by stripping LSB should someone try to use
587 * odd threshold value.
588 */
589 frag_threshold &= ~0x1;
590 }
591 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
592 }
593
594 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
595 rts_threshold = nla_get_u32(
596 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
597 changed |= WIPHY_PARAM_RTS_THRESHOLD;
598 }
599
600 if (changed) {
601 u8 old_retry_short, old_retry_long;
602 u32 old_frag_threshold, old_rts_threshold;
603
604 if (!rdev->ops->set_wiphy_params) {
605 result = -EOPNOTSUPP;
606 goto bad_res;
607 }
608
609 old_retry_short = rdev->wiphy.retry_short;
610 old_retry_long = rdev->wiphy.retry_long;
611 old_frag_threshold = rdev->wiphy.frag_threshold;
612 old_rts_threshold = rdev->wiphy.rts_threshold;
613
614 if (changed & WIPHY_PARAM_RETRY_SHORT)
615 rdev->wiphy.retry_short = retry_short;
616 if (changed & WIPHY_PARAM_RETRY_LONG)
617 rdev->wiphy.retry_long = retry_long;
618 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
619 rdev->wiphy.frag_threshold = frag_threshold;
620 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
621 rdev->wiphy.rts_threshold = rts_threshold;
622
623 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
624 if (result) {
625 rdev->wiphy.retry_short = old_retry_short;
626 rdev->wiphy.retry_long = old_retry_long;
627 rdev->wiphy.frag_threshold = old_frag_threshold;
628 rdev->wiphy.rts_threshold = old_rts_threshold;
629 }
630 }
631
632 bad_res:
633 mutex_unlock(&rdev->mtx);
634 unlock:
635 rtnl_unlock();
636 return result;
637 }
638
639
640 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
641 struct cfg80211_registered_device *rdev,
642 struct net_device *dev)
643 {
644 void *hdr;
645
646 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
647 if (!hdr)
648 return -1;
649
650 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
651 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
652 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
653 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
654 return genlmsg_end(msg, hdr);
655
656 nla_put_failure:
657 genlmsg_cancel(msg, hdr);
658 return -EMSGSIZE;
659 }
660
661 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
662 {
663 int wp_idx = 0;
664 int if_idx = 0;
665 int wp_start = cb->args[0];
666 int if_start = cb->args[1];
667 struct cfg80211_registered_device *dev;
668 struct wireless_dev *wdev;
669
670 mutex_lock(&cfg80211_mutex);
671 list_for_each_entry(dev, &cfg80211_drv_list, list) {
672 if (wp_idx < wp_start) {
673 wp_idx++;
674 continue;
675 }
676 if_idx = 0;
677
678 mutex_lock(&dev->devlist_mtx);
679 list_for_each_entry(wdev, &dev->netdev_list, list) {
680 if (if_idx < if_start) {
681 if_idx++;
682 continue;
683 }
684 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
685 cb->nlh->nlmsg_seq, NLM_F_MULTI,
686 dev, wdev->netdev) < 0) {
687 mutex_unlock(&dev->devlist_mtx);
688 goto out;
689 }
690 if_idx++;
691 }
692 mutex_unlock(&dev->devlist_mtx);
693
694 wp_idx++;
695 }
696 out:
697 mutex_unlock(&cfg80211_mutex);
698
699 cb->args[0] = wp_idx;
700 cb->args[1] = if_idx;
701
702 return skb->len;
703 }
704
705 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
706 {
707 struct sk_buff *msg;
708 struct cfg80211_registered_device *dev;
709 struct net_device *netdev;
710 int err;
711
712 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
713 if (err)
714 return err;
715
716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
717 if (!msg)
718 goto out_err;
719
720 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
721 dev, netdev) < 0)
722 goto out_free;
723
724 dev_put(netdev);
725 cfg80211_put_dev(dev);
726
727 return genlmsg_unicast(msg, info->snd_pid);
728
729 out_free:
730 nlmsg_free(msg);
731 out_err:
732 dev_put(netdev);
733 cfg80211_put_dev(dev);
734 return -ENOBUFS;
735 }
736
737 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
738 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
739 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
740 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
741 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
742 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
743 };
744
745 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
746 {
747 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
748 int flag;
749
750 *mntrflags = 0;
751
752 if (!nla)
753 return -EINVAL;
754
755 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
756 nla, mntr_flags_policy))
757 return -EINVAL;
758
759 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
760 if (flags[flag])
761 *mntrflags |= (1<<flag);
762
763 return 0;
764 }
765
766 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
767 {
768 struct cfg80211_registered_device *drv;
769 struct vif_params params;
770 int err, ifindex;
771 enum nl80211_iftype otype, ntype;
772 struct net_device *dev;
773 u32 _flags, *flags = NULL;
774 bool change = false;
775
776 memset(&params, 0, sizeof(params));
777
778 rtnl_lock();
779
780 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
781 if (err)
782 goto unlock_rtnl;
783
784 ifindex = dev->ifindex;
785 otype = ntype = dev->ieee80211_ptr->iftype;
786 dev_put(dev);
787
788 if (info->attrs[NL80211_ATTR_IFTYPE]) {
789 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
790 if (otype != ntype)
791 change = true;
792 if (ntype > NL80211_IFTYPE_MAX) {
793 err = -EINVAL;
794 goto unlock;
795 }
796 }
797
798 if (!drv->ops->change_virtual_intf ||
799 !(drv->wiphy.interface_modes & (1 << ntype))) {
800 err = -EOPNOTSUPP;
801 goto unlock;
802 }
803
804 if (info->attrs[NL80211_ATTR_MESH_ID]) {
805 if (ntype != NL80211_IFTYPE_MESH_POINT) {
806 err = -EINVAL;
807 goto unlock;
808 }
809 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
810 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
811 change = true;
812 }
813
814 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
815 if (ntype != NL80211_IFTYPE_MONITOR) {
816 err = -EINVAL;
817 goto unlock;
818 }
819 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
820 &_flags);
821 if (err)
822 goto unlock;
823
824 flags = &_flags;
825 change = true;
826 }
827
828 if (change)
829 err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
830 ntype, flags, &params);
831 else
832 err = 0;
833
834 dev = __dev_get_by_index(&init_net, ifindex);
835 WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype));
836
837 if (dev && !err && (ntype != otype)) {
838 if (otype == NL80211_IFTYPE_ADHOC)
839 cfg80211_clear_ibss(dev, false);
840 }
841
842 unlock:
843 cfg80211_put_dev(drv);
844 unlock_rtnl:
845 rtnl_unlock();
846 return err;
847 }
848
849 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
850 {
851 struct cfg80211_registered_device *drv;
852 struct vif_params params;
853 int err;
854 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
855 u32 flags;
856
857 memset(&params, 0, sizeof(params));
858
859 if (!info->attrs[NL80211_ATTR_IFNAME])
860 return -EINVAL;
861
862 if (info->attrs[NL80211_ATTR_IFTYPE]) {
863 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
864 if (type > NL80211_IFTYPE_MAX)
865 return -EINVAL;
866 }
867
868 rtnl_lock();
869
870 drv = cfg80211_get_dev_from_info(info);
871 if (IS_ERR(drv)) {
872 err = PTR_ERR(drv);
873 goto unlock_rtnl;
874 }
875
876 if (!drv->ops->add_virtual_intf ||
877 !(drv->wiphy.interface_modes & (1 << type))) {
878 err = -EOPNOTSUPP;
879 goto unlock;
880 }
881
882 if (type == NL80211_IFTYPE_MESH_POINT &&
883 info->attrs[NL80211_ATTR_MESH_ID]) {
884 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
885 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
886 }
887
888 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
889 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
890 &flags);
891 err = drv->ops->add_virtual_intf(&drv->wiphy,
892 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
893 type, err ? NULL : &flags, &params);
894
895 unlock:
896 cfg80211_put_dev(drv);
897 unlock_rtnl:
898 rtnl_unlock();
899 return err;
900 }
901
902 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
903 {
904 struct cfg80211_registered_device *drv;
905 int ifindex, err;
906 struct net_device *dev;
907
908 rtnl_lock();
909
910 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
911 if (err)
912 goto unlock_rtnl;
913 ifindex = dev->ifindex;
914 dev_put(dev);
915
916 if (!drv->ops->del_virtual_intf) {
917 err = -EOPNOTSUPP;
918 goto out;
919 }
920
921 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
922
923 out:
924 cfg80211_put_dev(drv);
925 unlock_rtnl:
926 rtnl_unlock();
927 return err;
928 }
929
930 struct get_key_cookie {
931 struct sk_buff *msg;
932 int error;
933 };
934
935 static void get_key_callback(void *c, struct key_params *params)
936 {
937 struct get_key_cookie *cookie = c;
938
939 if (params->key)
940 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
941 params->key_len, params->key);
942
943 if (params->seq)
944 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
945 params->seq_len, params->seq);
946
947 if (params->cipher)
948 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
949 params->cipher);
950
951 return;
952 nla_put_failure:
953 cookie->error = 1;
954 }
955
956 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
957 {
958 struct cfg80211_registered_device *drv;
959 int err;
960 struct net_device *dev;
961 u8 key_idx = 0;
962 u8 *mac_addr = NULL;
963 struct get_key_cookie cookie = {
964 .error = 0,
965 };
966 void *hdr;
967 struct sk_buff *msg;
968
969 if (info->attrs[NL80211_ATTR_KEY_IDX])
970 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
971
972 if (key_idx > 5)
973 return -EINVAL;
974
975 if (info->attrs[NL80211_ATTR_MAC])
976 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
977
978 rtnl_lock();
979
980 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
981 if (err)
982 goto unlock_rtnl;
983
984 if (!drv->ops->get_key) {
985 err = -EOPNOTSUPP;
986 goto out;
987 }
988
989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
990 if (!msg) {
991 err = -ENOMEM;
992 goto out;
993 }
994
995 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
996 NL80211_CMD_NEW_KEY);
997
998 if (IS_ERR(hdr)) {
999 err = PTR_ERR(hdr);
1000 goto out;
1001 }
1002
1003 cookie.msg = msg;
1004
1005 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1006 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1007 if (mac_addr)
1008 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1009
1010 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
1011 &cookie, get_key_callback);
1012
1013 if (err)
1014 goto out;
1015
1016 if (cookie.error)
1017 goto nla_put_failure;
1018
1019 genlmsg_end(msg, hdr);
1020 err = genlmsg_unicast(msg, info->snd_pid);
1021 goto out;
1022
1023 nla_put_failure:
1024 err = -ENOBUFS;
1025 nlmsg_free(msg);
1026 out:
1027 cfg80211_put_dev(drv);
1028 dev_put(dev);
1029 unlock_rtnl:
1030 rtnl_unlock();
1031
1032 return err;
1033 }
1034
1035 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1036 {
1037 struct cfg80211_registered_device *drv;
1038 int err;
1039 struct net_device *dev;
1040 u8 key_idx;
1041 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1042 u8 key_index);
1043
1044 if (!info->attrs[NL80211_ATTR_KEY_IDX])
1045 return -EINVAL;
1046
1047 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1048
1049 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
1050 if (key_idx < 4 || key_idx > 5)
1051 return -EINVAL;
1052 } else if (key_idx > 3)
1053 return -EINVAL;
1054
1055 /* currently only support setting default key */
1056 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
1057 !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
1058 return -EINVAL;
1059
1060 rtnl_lock();
1061
1062 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1063 if (err)
1064 goto unlock_rtnl;
1065
1066 if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
1067 func = drv->ops->set_default_key;
1068 else
1069 func = drv->ops->set_default_mgmt_key;
1070
1071 if (!func) {
1072 err = -EOPNOTSUPP;
1073 goto out;
1074 }
1075
1076 err = func(&drv->wiphy, dev, key_idx);
1077 #ifdef CONFIG_WIRELESS_EXT
1078 if (!err) {
1079 if (func == drv->ops->set_default_key)
1080 dev->ieee80211_ptr->wext.default_key = key_idx;
1081 else
1082 dev->ieee80211_ptr->wext.default_mgmt_key = key_idx;
1083 }
1084 #endif
1085
1086 out:
1087 cfg80211_put_dev(drv);
1088 dev_put(dev);
1089
1090 unlock_rtnl:
1091 rtnl_unlock();
1092
1093 return err;
1094 }
1095
1096 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1097 {
1098 struct cfg80211_registered_device *drv;
1099 int err, i;
1100 struct net_device *dev;
1101 struct key_params params;
1102 u8 key_idx = 0;
1103 u8 *mac_addr = NULL;
1104
1105 memset(&params, 0, sizeof(params));
1106
1107 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
1108 return -EINVAL;
1109
1110 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1111 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1112 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1113 }
1114
1115 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1116 params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1117 params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1118 }
1119
1120 if (info->attrs[NL80211_ATTR_KEY_IDX])
1121 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1122
1123 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1124
1125 if (info->attrs[NL80211_ATTR_MAC])
1126 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1127
1128 if (cfg80211_validate_key_settings(&params, key_idx, mac_addr))
1129 return -EINVAL;
1130
1131 rtnl_lock();
1132
1133 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1134 if (err)
1135 goto unlock_rtnl;
1136
1137 for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
1138 if (params.cipher == drv->wiphy.cipher_suites[i])
1139 break;
1140 if (i == drv->wiphy.n_cipher_suites) {
1141 err = -EINVAL;
1142 goto out;
1143 }
1144
1145 if (!drv->ops->add_key) {
1146 err = -EOPNOTSUPP;
1147 goto out;
1148 }
1149
1150 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
1151
1152 out:
1153 cfg80211_put_dev(drv);
1154 dev_put(dev);
1155 unlock_rtnl:
1156 rtnl_unlock();
1157
1158 return err;
1159 }
1160
1161 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1162 {
1163 struct cfg80211_registered_device *drv;
1164 int err;
1165 struct net_device *dev;
1166 u8 key_idx = 0;
1167 u8 *mac_addr = NULL;
1168
1169 if (info->attrs[NL80211_ATTR_KEY_IDX])
1170 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1171
1172 if (key_idx > 5)
1173 return -EINVAL;
1174
1175 if (info->attrs[NL80211_ATTR_MAC])
1176 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1177
1178 rtnl_lock();
1179
1180 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1181 if (err)
1182 goto unlock_rtnl;
1183
1184 if (!drv->ops->del_key) {
1185 err = -EOPNOTSUPP;
1186 goto out;
1187 }
1188
1189 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
1190
1191 #ifdef CONFIG_WIRELESS_EXT
1192 if (!err) {
1193 if (key_idx == dev->ieee80211_ptr->wext.default_key)
1194 dev->ieee80211_ptr->wext.default_key = -1;
1195 else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1196 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1197 }
1198 #endif
1199
1200 out:
1201 cfg80211_put_dev(drv);
1202 dev_put(dev);
1203
1204 unlock_rtnl:
1205 rtnl_unlock();
1206
1207 return err;
1208 }
1209
1210 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1211 {
1212 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1213 struct beacon_parameters *info);
1214 struct cfg80211_registered_device *drv;
1215 int err;
1216 struct net_device *dev;
1217 struct beacon_parameters params;
1218 int haveinfo = 0;
1219
1220 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1221 return -EINVAL;
1222
1223 rtnl_lock();
1224
1225 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1226 if (err)
1227 goto unlock_rtnl;
1228
1229 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1230 err = -EOPNOTSUPP;
1231 goto out;
1232 }
1233
1234 switch (info->genlhdr->cmd) {
1235 case NL80211_CMD_NEW_BEACON:
1236 /* these are required for NEW_BEACON */
1237 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1238 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1239 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1240 err = -EINVAL;
1241 goto out;
1242 }
1243
1244 call = drv->ops->add_beacon;
1245 break;
1246 case NL80211_CMD_SET_BEACON:
1247 call = drv->ops->set_beacon;
1248 break;
1249 default:
1250 WARN_ON(1);
1251 err = -EOPNOTSUPP;
1252 goto out;
1253 }
1254
1255 if (!call) {
1256 err = -EOPNOTSUPP;
1257 goto out;
1258 }
1259
1260 memset(&params, 0, sizeof(params));
1261
1262 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1263 params.interval =
1264 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1265 haveinfo = 1;
1266 }
1267
1268 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1269 params.dtim_period =
1270 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1271 haveinfo = 1;
1272 }
1273
1274 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1275 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1276 params.head_len =
1277 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1278 haveinfo = 1;
1279 }
1280
1281 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1282 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1283 params.tail_len =
1284 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1285 haveinfo = 1;
1286 }
1287
1288 if (!haveinfo) {
1289 err = -EINVAL;
1290 goto out;
1291 }
1292
1293 err = call(&drv->wiphy, dev, &params);
1294
1295 out:
1296 cfg80211_put_dev(drv);
1297 dev_put(dev);
1298 unlock_rtnl:
1299 rtnl_unlock();
1300
1301 return err;
1302 }
1303
1304 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1305 {
1306 struct cfg80211_registered_device *drv;
1307 int err;
1308 struct net_device *dev;
1309
1310 rtnl_lock();
1311
1312 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1313 if (err)
1314 goto unlock_rtnl;
1315
1316 if (!drv->ops->del_beacon) {
1317 err = -EOPNOTSUPP;
1318 goto out;
1319 }
1320
1321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1322 err = -EOPNOTSUPP;
1323 goto out;
1324 }
1325 err = drv->ops->del_beacon(&drv->wiphy, dev);
1326
1327 out:
1328 cfg80211_put_dev(drv);
1329 dev_put(dev);
1330 unlock_rtnl:
1331 rtnl_unlock();
1332
1333 return err;
1334 }
1335
1336 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1337 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1338 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1339 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1340 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1341 };
1342
1343 static int parse_station_flags(struct genl_info *info,
1344 struct station_parameters *params)
1345 {
1346 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1347 struct nlattr *nla;
1348 int flag;
1349
1350 /*
1351 * Try parsing the new attribute first so userspace
1352 * can specify both for older kernels.
1353 */
1354 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1355 if (nla) {
1356 struct nl80211_sta_flag_update *sta_flags;
1357
1358 sta_flags = nla_data(nla);
1359 params->sta_flags_mask = sta_flags->mask;
1360 params->sta_flags_set = sta_flags->set;
1361 if ((params->sta_flags_mask |
1362 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1363 return -EINVAL;
1364 return 0;
1365 }
1366
1367 /* if present, parse the old attribute */
1368
1369 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1370 if (!nla)
1371 return 0;
1372
1373 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1374 nla, sta_flags_policy))
1375 return -EINVAL;
1376
1377 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1378 params->sta_flags_mask &= ~1;
1379
1380 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1381 if (flags[flag])
1382 params->sta_flags_set |= (1<<flag);
1383
1384 return 0;
1385 }
1386
1387 static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1388 {
1389 int modulation, streams, bitrate;
1390
1391 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1392 return rate->legacy;
1393
1394 /* the formula below does only work for MCS values smaller than 32 */
1395 if (rate->mcs >= 32)
1396 return 0;
1397
1398 modulation = rate->mcs & 7;
1399 streams = (rate->mcs >> 3) + 1;
1400
1401 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1402 13500000 : 6500000;
1403
1404 if (modulation < 4)
1405 bitrate *= (modulation + 1);
1406 else if (modulation == 4)
1407 bitrate *= (modulation + 2);
1408 else
1409 bitrate *= (modulation + 3);
1410
1411 bitrate *= streams;
1412
1413 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1414 bitrate = (bitrate / 9) * 10;
1415
1416 /* do NOT round down here */
1417 return (bitrate + 50000) / 100000;
1418 }
1419
1420 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1421 int flags, struct net_device *dev,
1422 u8 *mac_addr, struct station_info *sinfo)
1423 {
1424 void *hdr;
1425 struct nlattr *sinfoattr, *txrate;
1426 u16 bitrate;
1427
1428 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1429 if (!hdr)
1430 return -1;
1431
1432 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1433 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1434
1435 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1436 if (!sinfoattr)
1437 goto nla_put_failure;
1438 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1439 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1440 sinfo->inactive_time);
1441 if (sinfo->filled & STATION_INFO_RX_BYTES)
1442 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1443 sinfo->rx_bytes);
1444 if (sinfo->filled & STATION_INFO_TX_BYTES)
1445 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1446 sinfo->tx_bytes);
1447 if (sinfo->filled & STATION_INFO_LLID)
1448 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1449 sinfo->llid);
1450 if (sinfo->filled & STATION_INFO_PLID)
1451 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1452 sinfo->plid);
1453 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1454 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1455 sinfo->plink_state);
1456 if (sinfo->filled & STATION_INFO_SIGNAL)
1457 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1458 sinfo->signal);
1459 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1460 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1461 if (!txrate)
1462 goto nla_put_failure;
1463
1464 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1465 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1466 if (bitrate > 0)
1467 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1468
1469 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1470 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1471 sinfo->txrate.mcs);
1472 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1473 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1474 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1475 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1476
1477 nla_nest_end(msg, txrate);
1478 }
1479 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1480 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1481 sinfo->rx_packets);
1482 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1483 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1484 sinfo->tx_packets);
1485 nla_nest_end(msg, sinfoattr);
1486
1487 return genlmsg_end(msg, hdr);
1488
1489 nla_put_failure:
1490 genlmsg_cancel(msg, hdr);
1491 return -EMSGSIZE;
1492 }
1493
1494 static int nl80211_dump_station(struct sk_buff *skb,
1495 struct netlink_callback *cb)
1496 {
1497 struct station_info sinfo;
1498 struct cfg80211_registered_device *dev;
1499 struct net_device *netdev;
1500 u8 mac_addr[ETH_ALEN];
1501 int ifidx = cb->args[0];
1502 int sta_idx = cb->args[1];
1503 int err;
1504
1505 if (!ifidx) {
1506 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1507 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1508 nl80211_policy);
1509 if (err)
1510 return err;
1511
1512 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1513 return -EINVAL;
1514
1515 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1516 if (!ifidx)
1517 return -EINVAL;
1518 }
1519
1520 rtnl_lock();
1521
1522 netdev = __dev_get_by_index(&init_net, ifidx);
1523 if (!netdev) {
1524 err = -ENODEV;
1525 goto out_rtnl;
1526 }
1527
1528 dev = cfg80211_get_dev_from_ifindex(ifidx);
1529 if (IS_ERR(dev)) {
1530 err = PTR_ERR(dev);
1531 goto out_rtnl;
1532 }
1533
1534 if (!dev->ops->dump_station) {
1535 err = -EOPNOTSUPP;
1536 goto out_err;
1537 }
1538
1539 while (1) {
1540 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1541 mac_addr, &sinfo);
1542 if (err == -ENOENT)
1543 break;
1544 if (err)
1545 goto out_err;
1546
1547 if (nl80211_send_station(skb,
1548 NETLINK_CB(cb->skb).pid,
1549 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1550 netdev, mac_addr,
1551 &sinfo) < 0)
1552 goto out;
1553
1554 sta_idx++;
1555 }
1556
1557
1558 out:
1559 cb->args[1] = sta_idx;
1560 err = skb->len;
1561 out_err:
1562 cfg80211_put_dev(dev);
1563 out_rtnl:
1564 rtnl_unlock();
1565
1566 return err;
1567 }
1568
1569 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1570 {
1571 struct cfg80211_registered_device *drv;
1572 int err;
1573 struct net_device *dev;
1574 struct station_info sinfo;
1575 struct sk_buff *msg;
1576 u8 *mac_addr = NULL;
1577
1578 memset(&sinfo, 0, sizeof(sinfo));
1579
1580 if (!info->attrs[NL80211_ATTR_MAC])
1581 return -EINVAL;
1582
1583 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1584
1585 rtnl_lock();
1586
1587 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1588 if (err)
1589 goto out_rtnl;
1590
1591 if (!drv->ops->get_station) {
1592 err = -EOPNOTSUPP;
1593 goto out;
1594 }
1595
1596 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1597 if (err)
1598 goto out;
1599
1600 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1601 if (!msg)
1602 goto out;
1603
1604 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1605 dev, mac_addr, &sinfo) < 0)
1606 goto out_free;
1607
1608 err = genlmsg_unicast(msg, info->snd_pid);
1609 goto out;
1610
1611 out_free:
1612 nlmsg_free(msg);
1613 out:
1614 cfg80211_put_dev(drv);
1615 dev_put(dev);
1616 out_rtnl:
1617 rtnl_unlock();
1618
1619 return err;
1620 }
1621
1622 /*
1623 * Get vlan interface making sure it is on the right wiphy.
1624 */
1625 static int get_vlan(struct nlattr *vlanattr,
1626 struct cfg80211_registered_device *rdev,
1627 struct net_device **vlan)
1628 {
1629 *vlan = NULL;
1630
1631 if (vlanattr) {
1632 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1633 if (!*vlan)
1634 return -ENODEV;
1635 if (!(*vlan)->ieee80211_ptr)
1636 return -EINVAL;
1637 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1638 return -EINVAL;
1639 }
1640 return 0;
1641 }
1642
1643 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1644 {
1645 struct cfg80211_registered_device *drv;
1646 int err;
1647 struct net_device *dev;
1648 struct station_parameters params;
1649 u8 *mac_addr = NULL;
1650
1651 memset(&params, 0, sizeof(params));
1652
1653 params.listen_interval = -1;
1654
1655 if (info->attrs[NL80211_ATTR_STA_AID])
1656 return -EINVAL;
1657
1658 if (!info->attrs[NL80211_ATTR_MAC])
1659 return -EINVAL;
1660
1661 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1662
1663 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1664 params.supported_rates =
1665 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1666 params.supported_rates_len =
1667 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1668 }
1669
1670 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1671 params.listen_interval =
1672 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1673
1674 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1675 params.ht_capa =
1676 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1677
1678 if (parse_station_flags(info, &params))
1679 return -EINVAL;
1680
1681 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1682 params.plink_action =
1683 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1684
1685 rtnl_lock();
1686
1687 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1688 if (err)
1689 goto out_rtnl;
1690
1691 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1692 if (err)
1693 goto out;
1694
1695 /* validate settings */
1696 err = 0;
1697
1698 switch (dev->ieee80211_ptr->iftype) {
1699 case NL80211_IFTYPE_AP:
1700 case NL80211_IFTYPE_AP_VLAN:
1701 /* disallow mesh-specific things */
1702 if (params.plink_action)
1703 err = -EINVAL;
1704 break;
1705 case NL80211_IFTYPE_STATION:
1706 /* disallow everything but AUTHORIZED flag */
1707 if (params.plink_action)
1708 err = -EINVAL;
1709 if (params.vlan)
1710 err = -EINVAL;
1711 if (params.supported_rates)
1712 err = -EINVAL;
1713 if (params.ht_capa)
1714 err = -EINVAL;
1715 if (params.listen_interval >= 0)
1716 err = -EINVAL;
1717 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
1718 err = -EINVAL;
1719 break;
1720 case NL80211_IFTYPE_MESH_POINT:
1721 /* disallow things mesh doesn't support */
1722 if (params.vlan)
1723 err = -EINVAL;
1724 if (params.ht_capa)
1725 err = -EINVAL;
1726 if (params.listen_interval >= 0)
1727 err = -EINVAL;
1728 if (params.supported_rates)
1729 err = -EINVAL;
1730 if (params.sta_flags_mask)
1731 err = -EINVAL;
1732 break;
1733 default:
1734 err = -EINVAL;
1735 }
1736
1737 if (err)
1738 goto out;
1739
1740 if (!drv->ops->change_station) {
1741 err = -EOPNOTSUPP;
1742 goto out;
1743 }
1744
1745 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
1746
1747 out:
1748 if (params.vlan)
1749 dev_put(params.vlan);
1750 cfg80211_put_dev(drv);
1751 dev_put(dev);
1752 out_rtnl:
1753 rtnl_unlock();
1754
1755 return err;
1756 }
1757
1758 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1759 {
1760 struct cfg80211_registered_device *drv;
1761 int err;
1762 struct net_device *dev;
1763 struct station_parameters params;
1764 u8 *mac_addr = NULL;
1765
1766 memset(&params, 0, sizeof(params));
1767
1768 if (!info->attrs[NL80211_ATTR_MAC])
1769 return -EINVAL;
1770
1771 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1772 return -EINVAL;
1773
1774 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1775 return -EINVAL;
1776
1777 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1778 params.supported_rates =
1779 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1780 params.supported_rates_len =
1781 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1782 params.listen_interval =
1783 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1784
1785 if (info->attrs[NL80211_ATTR_STA_AID]) {
1786 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1787 if (!params.aid || params.aid > IEEE80211_MAX_AID)
1788 return -EINVAL;
1789 }
1790
1791 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1792 params.ht_capa =
1793 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1794
1795 if (parse_station_flags(info, &params))
1796 return -EINVAL;
1797
1798 rtnl_lock();
1799
1800 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1801 if (err)
1802 goto out_rtnl;
1803
1804 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1805 if (err)
1806 goto out;
1807
1808 /* validate settings */
1809 err = 0;
1810
1811 switch (dev->ieee80211_ptr->iftype) {
1812 case NL80211_IFTYPE_AP:
1813 case NL80211_IFTYPE_AP_VLAN:
1814 /* all ok but must have AID */
1815 if (!params.aid)
1816 err = -EINVAL;
1817 break;
1818 case NL80211_IFTYPE_MESH_POINT:
1819 /* disallow things mesh doesn't support */
1820 if (params.vlan)
1821 err = -EINVAL;
1822 if (params.aid)
1823 err = -EINVAL;
1824 if (params.ht_capa)
1825 err = -EINVAL;
1826 if (params.listen_interval >= 0)
1827 err = -EINVAL;
1828 if (params.supported_rates)
1829 err = -EINVAL;
1830 if (params.sta_flags_mask)
1831 err = -EINVAL;
1832 break;
1833 default:
1834 err = -EINVAL;
1835 }
1836
1837 if (err)
1838 goto out;
1839
1840 if (!drv->ops->add_station) {
1841 err = -EOPNOTSUPP;
1842 goto out;
1843 }
1844
1845 if (!netif_running(dev)) {
1846 err = -ENETDOWN;
1847 goto out;
1848 }
1849
1850 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
1851
1852 out:
1853 if (params.vlan)
1854 dev_put(params.vlan);
1855 cfg80211_put_dev(drv);
1856 dev_put(dev);
1857 out_rtnl:
1858 rtnl_unlock();
1859
1860 return err;
1861 }
1862
1863 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1864 {
1865 struct cfg80211_registered_device *drv;
1866 int err;
1867 struct net_device *dev;
1868 u8 *mac_addr = NULL;
1869
1870 if (info->attrs[NL80211_ATTR_MAC])
1871 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1872
1873 rtnl_lock();
1874
1875 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1876 if (err)
1877 goto out_rtnl;
1878
1879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1880 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
1881 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1882 err = -EINVAL;
1883 goto out;
1884 }
1885
1886 if (!drv->ops->del_station) {
1887 err = -EOPNOTSUPP;
1888 goto out;
1889 }
1890
1891 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1892
1893 out:
1894 cfg80211_put_dev(drv);
1895 dev_put(dev);
1896 out_rtnl:
1897 rtnl_unlock();
1898
1899 return err;
1900 }
1901
1902 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1903 int flags, struct net_device *dev,
1904 u8 *dst, u8 *next_hop,
1905 struct mpath_info *pinfo)
1906 {
1907 void *hdr;
1908 struct nlattr *pinfoattr;
1909
1910 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1911 if (!hdr)
1912 return -1;
1913
1914 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1915 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1916 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1917
1918 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1919 if (!pinfoattr)
1920 goto nla_put_failure;
1921 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1922 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1923 pinfo->frame_qlen);
1924 if (pinfo->filled & MPATH_INFO_DSN)
1925 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1926 pinfo->dsn);
1927 if (pinfo->filled & MPATH_INFO_METRIC)
1928 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1929 pinfo->metric);
1930 if (pinfo->filled & MPATH_INFO_EXPTIME)
1931 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1932 pinfo->exptime);
1933 if (pinfo->filled & MPATH_INFO_FLAGS)
1934 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1935 pinfo->flags);
1936 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1937 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1938 pinfo->discovery_timeout);
1939 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1940 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1941 pinfo->discovery_retries);
1942
1943 nla_nest_end(msg, pinfoattr);
1944
1945 return genlmsg_end(msg, hdr);
1946
1947 nla_put_failure:
1948 genlmsg_cancel(msg, hdr);
1949 return -EMSGSIZE;
1950 }
1951
1952 static int nl80211_dump_mpath(struct sk_buff *skb,
1953 struct netlink_callback *cb)
1954 {
1955 struct mpath_info pinfo;
1956 struct cfg80211_registered_device *dev;
1957 struct net_device *netdev;
1958 u8 dst[ETH_ALEN];
1959 u8 next_hop[ETH_ALEN];
1960 int ifidx = cb->args[0];
1961 int path_idx = cb->args[1];
1962 int err;
1963
1964 if (!ifidx) {
1965 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1966 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1967 nl80211_policy);
1968 if (err)
1969 return err;
1970
1971 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1972 return -EINVAL;
1973
1974 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1975 if (!ifidx)
1976 return -EINVAL;
1977 }
1978
1979 rtnl_lock();
1980
1981 netdev = __dev_get_by_index(&init_net, ifidx);
1982 if (!netdev) {
1983 err = -ENODEV;
1984 goto out_rtnl;
1985 }
1986
1987 dev = cfg80211_get_dev_from_ifindex(ifidx);
1988 if (IS_ERR(dev)) {
1989 err = PTR_ERR(dev);
1990 goto out_rtnl;
1991 }
1992
1993 if (!dev->ops->dump_mpath) {
1994 err = -EOPNOTSUPP;
1995 goto out_err;
1996 }
1997
1998 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1999 err = -EOPNOTSUPP;
2000 goto out;
2001 }
2002
2003 while (1) {
2004 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2005 dst, next_hop, &pinfo);
2006 if (err == -ENOENT)
2007 break;
2008 if (err)
2009 goto out_err;
2010
2011 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2012 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2013 netdev, dst, next_hop,
2014 &pinfo) < 0)
2015 goto out;
2016
2017 path_idx++;
2018 }
2019
2020
2021 out:
2022 cb->args[1] = path_idx;
2023 err = skb->len;
2024 out_err:
2025 cfg80211_put_dev(dev);
2026 out_rtnl:
2027 rtnl_unlock();
2028
2029 return err;
2030 }
2031
2032 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2033 {
2034 struct cfg80211_registered_device *drv;
2035 int err;
2036 struct net_device *dev;
2037 struct mpath_info pinfo;
2038 struct sk_buff *msg;
2039 u8 *dst = NULL;
2040 u8 next_hop[ETH_ALEN];
2041
2042 memset(&pinfo, 0, sizeof(pinfo));
2043
2044 if (!info->attrs[NL80211_ATTR_MAC])
2045 return -EINVAL;
2046
2047 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2048
2049 rtnl_lock();
2050
2051 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2052 if (err)
2053 goto out_rtnl;
2054
2055 if (!drv->ops->get_mpath) {
2056 err = -EOPNOTSUPP;
2057 goto out;
2058 }
2059
2060 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2061 err = -EOPNOTSUPP;
2062 goto out;
2063 }
2064
2065 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
2066 if (err)
2067 goto out;
2068
2069 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2070 if (!msg)
2071 goto out;
2072
2073 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2074 dev, dst, next_hop, &pinfo) < 0)
2075 goto out_free;
2076
2077 err = genlmsg_unicast(msg, info->snd_pid);
2078 goto out;
2079
2080 out_free:
2081 nlmsg_free(msg);
2082 out:
2083 cfg80211_put_dev(drv);
2084 dev_put(dev);
2085 out_rtnl:
2086 rtnl_unlock();
2087
2088 return err;
2089 }
2090
2091 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2092 {
2093 struct cfg80211_registered_device *drv;
2094 int err;
2095 struct net_device *dev;
2096 u8 *dst = NULL;
2097 u8 *next_hop = NULL;
2098
2099 if (!info->attrs[NL80211_ATTR_MAC])
2100 return -EINVAL;
2101
2102 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2103 return -EINVAL;
2104
2105 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2106 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2107
2108 rtnl_lock();
2109
2110 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2111 if (err)
2112 goto out_rtnl;
2113
2114 if (!drv->ops->change_mpath) {
2115 err = -EOPNOTSUPP;
2116 goto out;
2117 }
2118
2119 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2120 err = -EOPNOTSUPP;
2121 goto out;
2122 }
2123
2124 if (!netif_running(dev)) {
2125 err = -ENETDOWN;
2126 goto out;
2127 }
2128
2129 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
2130
2131 out:
2132 cfg80211_put_dev(drv);
2133 dev_put(dev);
2134 out_rtnl:
2135 rtnl_unlock();
2136
2137 return err;
2138 }
2139 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2140 {
2141 struct cfg80211_registered_device *drv;
2142 int err;
2143 struct net_device *dev;
2144 u8 *dst = NULL;
2145 u8 *next_hop = NULL;
2146
2147 if (!info->attrs[NL80211_ATTR_MAC])
2148 return -EINVAL;
2149
2150 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2151 return -EINVAL;
2152
2153 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2154 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2155
2156 rtnl_lock();
2157
2158 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2159 if (err)
2160 goto out_rtnl;
2161
2162 if (!drv->ops->add_mpath) {
2163 err = -EOPNOTSUPP;
2164 goto out;
2165 }
2166
2167 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2168 err = -EOPNOTSUPP;
2169 goto out;
2170 }
2171
2172 if (!netif_running(dev)) {
2173 err = -ENETDOWN;
2174 goto out;
2175 }
2176
2177 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
2178
2179 out:
2180 cfg80211_put_dev(drv);
2181 dev_put(dev);
2182 out_rtnl:
2183 rtnl_unlock();
2184
2185 return err;
2186 }
2187
2188 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2189 {
2190 struct cfg80211_registered_device *drv;
2191 int err;
2192 struct net_device *dev;
2193 u8 *dst = NULL;
2194
2195 if (info->attrs[NL80211_ATTR_MAC])
2196 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2197
2198 rtnl_lock();
2199
2200 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2201 if (err)
2202 goto out_rtnl;
2203
2204 if (!drv->ops->del_mpath) {
2205 err = -EOPNOTSUPP;
2206 goto out;
2207 }
2208
2209 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
2210
2211 out:
2212 cfg80211_put_dev(drv);
2213 dev_put(dev);
2214 out_rtnl:
2215 rtnl_unlock();
2216
2217 return err;
2218 }
2219
2220 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2221 {
2222 struct cfg80211_registered_device *drv;
2223 int err;
2224 struct net_device *dev;
2225 struct bss_parameters params;
2226
2227 memset(&params, 0, sizeof(params));
2228 /* default to not changing parameters */
2229 params.use_cts_prot = -1;
2230 params.use_short_preamble = -1;
2231 params.use_short_slot_time = -1;
2232
2233 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2234 params.use_cts_prot =
2235 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2236 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2237 params.use_short_preamble =
2238 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2239 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2240 params.use_short_slot_time =
2241 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2242 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2243 params.basic_rates =
2244 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2245 params.basic_rates_len =
2246 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2247 }
2248
2249 rtnl_lock();
2250
2251 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2252 if (err)
2253 goto out_rtnl;
2254
2255 if (!drv->ops->change_bss) {
2256 err = -EOPNOTSUPP;
2257 goto out;
2258 }
2259
2260 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2261 err = -EOPNOTSUPP;
2262 goto out;
2263 }
2264
2265 err = drv->ops->change_bss(&drv->wiphy, dev, &params);
2266
2267 out:
2268 cfg80211_put_dev(drv);
2269 dev_put(dev);
2270 out_rtnl:
2271 rtnl_unlock();
2272
2273 return err;
2274 }
2275
2276 static const struct nla_policy
2277 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2278 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2279 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2280 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2281 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2282 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2283 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2284 };
2285
2286 static int parse_reg_rule(struct nlattr *tb[],
2287 struct ieee80211_reg_rule *reg_rule)
2288 {
2289 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2290 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2291
2292 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2293 return -EINVAL;
2294 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2295 return -EINVAL;
2296 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2297 return -EINVAL;
2298 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2299 return -EINVAL;
2300 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2301 return -EINVAL;
2302
2303 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2304
2305 freq_range->start_freq_khz =
2306 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2307 freq_range->end_freq_khz =
2308 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2309 freq_range->max_bandwidth_khz =
2310 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2311
2312 power_rule->max_eirp =
2313 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2314
2315 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2316 power_rule->max_antenna_gain =
2317 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2318
2319 return 0;
2320 }
2321
2322 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2323 {
2324 int r;
2325 char *data = NULL;
2326
2327 /*
2328 * You should only get this when cfg80211 hasn't yet initialized
2329 * completely when built-in to the kernel right between the time
2330 * window between nl80211_init() and regulatory_init(), if that is
2331 * even possible.
2332 */
2333 mutex_lock(&cfg80211_mutex);
2334 if (unlikely(!cfg80211_regdomain)) {
2335 mutex_unlock(&cfg80211_mutex);
2336 return -EINPROGRESS;
2337 }
2338 mutex_unlock(&cfg80211_mutex);
2339
2340 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2341 return -EINVAL;
2342
2343 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2344
2345 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
2346 /* We ignore world regdom requests with the old regdom setup */
2347 if (is_world_regdom(data))
2348 return -EINVAL;
2349 #endif
2350
2351 r = regulatory_hint_user(data);
2352
2353 return r;
2354 }
2355
2356 static int nl80211_get_mesh_params(struct sk_buff *skb,
2357 struct genl_info *info)
2358 {
2359 struct cfg80211_registered_device *drv;
2360 struct mesh_config cur_params;
2361 int err;
2362 struct net_device *dev;
2363 void *hdr;
2364 struct nlattr *pinfoattr;
2365 struct sk_buff *msg;
2366
2367 rtnl_lock();
2368
2369 /* Look up our device */
2370 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2371 if (err)
2372 goto out_rtnl;
2373
2374 if (!drv->ops->get_mesh_params) {
2375 err = -EOPNOTSUPP;
2376 goto out;
2377 }
2378
2379 /* Get the mesh params */
2380 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
2381 if (err)
2382 goto out;
2383
2384 /* Draw up a netlink message to send back */
2385 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2386 if (!msg) {
2387 err = -ENOBUFS;
2388 goto out;
2389 }
2390 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2391 NL80211_CMD_GET_MESH_PARAMS);
2392 if (!hdr)
2393 goto nla_put_failure;
2394 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2395 if (!pinfoattr)
2396 goto nla_put_failure;
2397 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2398 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2399 cur_params.dot11MeshRetryTimeout);
2400 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2401 cur_params.dot11MeshConfirmTimeout);
2402 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2403 cur_params.dot11MeshHoldingTimeout);
2404 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2405 cur_params.dot11MeshMaxPeerLinks);
2406 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2407 cur_params.dot11MeshMaxRetries);
2408 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2409 cur_params.dot11MeshTTL);
2410 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2411 cur_params.auto_open_plinks);
2412 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2413 cur_params.dot11MeshHWMPmaxPREQretries);
2414 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2415 cur_params.path_refresh_time);
2416 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2417 cur_params.min_discovery_timeout);
2418 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2419 cur_params.dot11MeshHWMPactivePathTimeout);
2420 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2421 cur_params.dot11MeshHWMPpreqMinInterval);
2422 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2423 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2424 nla_nest_end(msg, pinfoattr);
2425 genlmsg_end(msg, hdr);
2426 err = genlmsg_unicast(msg, info->snd_pid);
2427 goto out;
2428
2429 nla_put_failure:
2430 genlmsg_cancel(msg, hdr);
2431 err = -EMSGSIZE;
2432 out:
2433 /* Cleanup */
2434 cfg80211_put_dev(drv);
2435 dev_put(dev);
2436 out_rtnl:
2437 rtnl_unlock();
2438
2439 return err;
2440 }
2441
2442 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2443 do {\
2444 if (table[attr_num]) {\
2445 cfg.param = nla_fn(table[attr_num]); \
2446 mask |= (1 << (attr_num - 1)); \
2447 } \
2448 } while (0);\
2449
2450 static struct nla_policy
2451 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2452 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2453 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2454 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2455 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2456 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2457 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2458 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2459
2460 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2461 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2462 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2463 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2464 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2465 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2466 };
2467
2468 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2469 {
2470 int err;
2471 u32 mask;
2472 struct cfg80211_registered_device *drv;
2473 struct net_device *dev;
2474 struct mesh_config cfg;
2475 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2476 struct nlattr *parent_attr;
2477
2478 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2479 if (!parent_attr)
2480 return -EINVAL;
2481 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2482 parent_attr, nl80211_meshconf_params_policy))
2483 return -EINVAL;
2484
2485 rtnl_lock();
2486
2487 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2488 if (err)
2489 goto out_rtnl;
2490
2491 if (!drv->ops->set_mesh_params) {
2492 err = -EOPNOTSUPP;
2493 goto out;
2494 }
2495
2496 /* This makes sure that there aren't more than 32 mesh config
2497 * parameters (otherwise our bitfield scheme would not work.) */
2498 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2499
2500 /* Fill in the params struct */
2501 mask = 0;
2502 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2503 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2504 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2505 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2506 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2507 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2508 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2509 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2510 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2511 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2512 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2513 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2514 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2515 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2516 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2517 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2518 nla_get_u8);
2519 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2520 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2521 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2522 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2523 nla_get_u16);
2524 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2525 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2526 nla_get_u32);
2527 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2528 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2529 nla_get_u16);
2530 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2531 dot11MeshHWMPnetDiameterTraversalTime,
2532 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2533 nla_get_u16);
2534
2535 /* Apply changes */
2536 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
2537
2538 out:
2539 /* cleanup */
2540 cfg80211_put_dev(drv);
2541 dev_put(dev);
2542 out_rtnl:
2543 rtnl_unlock();
2544
2545 return err;
2546 }
2547
2548 #undef FILL_IN_MESH_PARAM_IF_SET
2549
2550 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2551 {
2552 struct sk_buff *msg;
2553 void *hdr = NULL;
2554 struct nlattr *nl_reg_rules;
2555 unsigned int i;
2556 int err = -EINVAL;
2557
2558 mutex_lock(&cfg80211_mutex);
2559
2560 if (!cfg80211_regdomain)
2561 goto out;
2562
2563 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2564 if (!msg) {
2565 err = -ENOBUFS;
2566 goto out;
2567 }
2568
2569 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2570 NL80211_CMD_GET_REG);
2571 if (!hdr)
2572 goto nla_put_failure;
2573
2574 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2575 cfg80211_regdomain->alpha2);
2576
2577 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2578 if (!nl_reg_rules)
2579 goto nla_put_failure;
2580
2581 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2582 struct nlattr *nl_reg_rule;
2583 const struct ieee80211_reg_rule *reg_rule;
2584 const struct ieee80211_freq_range *freq_range;
2585 const struct ieee80211_power_rule *power_rule;
2586
2587 reg_rule = &cfg80211_regdomain->reg_rules[i];
2588 freq_range = &reg_rule->freq_range;
2589 power_rule = &reg_rule->power_rule;
2590
2591 nl_reg_rule = nla_nest_start(msg, i);
2592 if (!nl_reg_rule)
2593 goto nla_put_failure;
2594
2595 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2596 reg_rule->flags);
2597 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2598 freq_range->start_freq_khz);
2599 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2600 freq_range->end_freq_khz);
2601 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2602 freq_range->max_bandwidth_khz);
2603 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2604 power_rule->max_antenna_gain);
2605 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2606 power_rule->max_eirp);
2607
2608 nla_nest_end(msg, nl_reg_rule);
2609 }
2610
2611 nla_nest_end(msg, nl_reg_rules);
2612
2613 genlmsg_end(msg, hdr);
2614 err = genlmsg_unicast(msg, info->snd_pid);
2615 goto out;
2616
2617 nla_put_failure:
2618 genlmsg_cancel(msg, hdr);
2619 err = -EMSGSIZE;
2620 out:
2621 mutex_unlock(&cfg80211_mutex);
2622 return err;
2623 }
2624
2625 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2626 {
2627 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2628 struct nlattr *nl_reg_rule;
2629 char *alpha2 = NULL;
2630 int rem_reg_rules = 0, r = 0;
2631 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2632 struct ieee80211_regdomain *rd = NULL;
2633
2634 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2635 return -EINVAL;
2636
2637 if (!info->attrs[NL80211_ATTR_REG_RULES])
2638 return -EINVAL;
2639
2640 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2641
2642 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2643 rem_reg_rules) {
2644 num_rules++;
2645 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2646 return -EINVAL;
2647 }
2648
2649 mutex_lock(&cfg80211_mutex);
2650
2651 if (!reg_is_valid_request(alpha2)) {
2652 r = -EINVAL;
2653 goto bad_reg;
2654 }
2655
2656 size_of_regd = sizeof(struct ieee80211_regdomain) +
2657 (num_rules * sizeof(struct ieee80211_reg_rule));
2658
2659 rd = kzalloc(size_of_regd, GFP_KERNEL);
2660 if (!rd) {
2661 r = -ENOMEM;
2662 goto bad_reg;
2663 }
2664
2665 rd->n_reg_rules = num_rules;
2666 rd->alpha2[0] = alpha2[0];
2667 rd->alpha2[1] = alpha2[1];
2668
2669 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2670 rem_reg_rules) {
2671 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2672 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2673 reg_rule_policy);
2674 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2675 if (r)
2676 goto bad_reg;
2677
2678 rule_idx++;
2679
2680 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2681 r = -EINVAL;
2682 goto bad_reg;
2683 }
2684 }
2685
2686 BUG_ON(rule_idx != num_rules);
2687
2688 r = set_regdom(rd);
2689
2690 mutex_unlock(&cfg80211_mutex);
2691
2692 return r;
2693
2694 bad_reg:
2695 mutex_unlock(&cfg80211_mutex);
2696 kfree(rd);
2697 return r;
2698 }
2699
2700 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2701 {
2702 struct cfg80211_registered_device *drv;
2703 struct net_device *dev;
2704 struct cfg80211_scan_request *request;
2705 struct cfg80211_ssid *ssid;
2706 struct ieee80211_channel *channel;
2707 struct nlattr *attr;
2708 struct wiphy *wiphy;
2709 int err, tmp, n_ssids = 0, n_channels = 0, i;
2710 enum ieee80211_band band;
2711 size_t ie_len;
2712
2713 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2714 return -EINVAL;
2715
2716 rtnl_lock();
2717
2718 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2719 if (err)
2720 goto out_rtnl;
2721
2722 wiphy = &drv->wiphy;
2723
2724 if (!drv->ops->scan) {
2725 err = -EOPNOTSUPP;
2726 goto out;
2727 }
2728
2729 if (!netif_running(dev)) {
2730 err = -ENETDOWN;
2731 goto out;
2732 }
2733
2734 if (drv->scan_req) {
2735 err = -EBUSY;
2736 goto out;
2737 }
2738
2739 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2740 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
2741 n_channels++;
2742 if (!n_channels) {
2743 err = -EINVAL;
2744 goto out;
2745 }
2746 } else {
2747 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2748 if (wiphy->bands[band])
2749 n_channels += wiphy->bands[band]->n_channels;
2750 }
2751
2752 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2753 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2754 n_ssids++;
2755
2756 if (n_ssids > wiphy->max_scan_ssids) {
2757 err = -EINVAL;
2758 goto out;
2759 }
2760
2761 if (info->attrs[NL80211_ATTR_IE])
2762 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2763 else
2764 ie_len = 0;
2765
2766 if (ie_len > wiphy->max_scan_ie_len) {
2767 err = -EINVAL;
2768 goto out;
2769 }
2770
2771 request = kzalloc(sizeof(*request)
2772 + sizeof(*ssid) * n_ssids
2773 + sizeof(channel) * n_channels
2774 + ie_len, GFP_KERNEL);
2775 if (!request) {
2776 err = -ENOMEM;
2777 goto out;
2778 }
2779
2780 request->channels = (void *)((char *)request + sizeof(*request));
2781 request->n_channels = n_channels;
2782 if (n_ssids)
2783 request->ssids = (void *)(request->channels + n_channels);
2784 request->n_ssids = n_ssids;
2785 if (ie_len) {
2786 if (request->ssids)
2787 request->ie = (void *)(request->ssids + n_ssids);
2788 else
2789 request->ie = (void *)(request->channels + n_channels);
2790 }
2791
2792 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2793 /* user specified, bail out if channel not found */
2794 request->n_channels = n_channels;
2795 i = 0;
2796 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2797 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2798 if (!request->channels[i]) {
2799 err = -EINVAL;
2800 goto out_free;
2801 }
2802 i++;
2803 }
2804 } else {
2805 /* all channels */
2806 i = 0;
2807 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2808 int j;
2809 if (!wiphy->bands[band])
2810 continue;
2811 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2812 request->channels[i] = &wiphy->bands[band]->channels[j];
2813 i++;
2814 }
2815 }
2816 }
2817
2818 i = 0;
2819 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2820 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2821 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2822 err = -EINVAL;
2823 goto out_free;
2824 }
2825 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2826 request->ssids[i].ssid_len = nla_len(attr);
2827 i++;
2828 }
2829 }
2830
2831 if (info->attrs[NL80211_ATTR_IE]) {
2832 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2833 memcpy((void *)request->ie,
2834 nla_data(info->attrs[NL80211_ATTR_IE]),
2835 request->ie_len);
2836 }
2837
2838 request->ifidx = dev->ifindex;
2839 request->wiphy = &drv->wiphy;
2840
2841 drv->scan_req = request;
2842 err = drv->ops->scan(&drv->wiphy, dev, request);
2843
2844 out_free:
2845 if (err) {
2846 drv->scan_req = NULL;
2847 kfree(request);
2848 }
2849 out:
2850 cfg80211_put_dev(drv);
2851 dev_put(dev);
2852 out_rtnl:
2853 rtnl_unlock();
2854
2855 return err;
2856 }
2857
2858 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
2859 struct cfg80211_registered_device *rdev,
2860 struct net_device *dev,
2861 struct cfg80211_bss *res)
2862 {
2863 void *hdr;
2864 struct nlattr *bss;
2865
2866 hdr = nl80211hdr_put(msg, pid, seq, flags,
2867 NL80211_CMD_NEW_SCAN_RESULTS);
2868 if (!hdr)
2869 return -1;
2870
2871 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
2872 rdev->bss_generation);
2873 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2874
2875 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
2876 if (!bss)
2877 goto nla_put_failure;
2878 if (!is_zero_ether_addr(res->bssid))
2879 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
2880 if (res->information_elements && res->len_information_elements)
2881 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
2882 res->len_information_elements,
2883 res->information_elements);
2884 if (res->tsf)
2885 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
2886 if (res->beacon_interval)
2887 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
2888 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
2889 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
2890
2891 switch (rdev->wiphy.signal_type) {
2892 case CFG80211_SIGNAL_TYPE_MBM:
2893 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
2894 break;
2895 case CFG80211_SIGNAL_TYPE_UNSPEC:
2896 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
2897 break;
2898 default:
2899 break;
2900 }
2901
2902 nla_nest_end(msg, bss);
2903
2904 return genlmsg_end(msg, hdr);
2905
2906 nla_put_failure:
2907 genlmsg_cancel(msg, hdr);
2908 return -EMSGSIZE;
2909 }
2910
2911 static int nl80211_dump_scan(struct sk_buff *skb,
2912 struct netlink_callback *cb)
2913 {
2914 struct cfg80211_registered_device *dev;
2915 struct net_device *netdev;
2916 struct cfg80211_internal_bss *scan;
2917 int ifidx = cb->args[0];
2918 int start = cb->args[1], idx = 0;
2919 int err;
2920
2921 if (!ifidx) {
2922 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2923 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2924 nl80211_policy);
2925 if (err)
2926 return err;
2927
2928 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2929 return -EINVAL;
2930
2931 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2932 if (!ifidx)
2933 return -EINVAL;
2934 cb->args[0] = ifidx;
2935 }
2936
2937 netdev = dev_get_by_index(&init_net, ifidx);
2938 if (!netdev)
2939 return -ENODEV;
2940
2941 dev = cfg80211_get_dev_from_ifindex(ifidx);
2942 if (IS_ERR(dev)) {
2943 err = PTR_ERR(dev);
2944 goto out_put_netdev;
2945 }
2946
2947 spin_lock_bh(&dev->bss_lock);
2948 cfg80211_bss_expire(dev);
2949
2950 list_for_each_entry(scan, &dev->bss_list, list) {
2951 if (++idx <= start)
2952 continue;
2953 if (nl80211_send_bss(skb,
2954 NETLINK_CB(cb->skb).pid,
2955 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2956 dev, netdev, &scan->pub) < 0) {
2957 idx--;
2958 goto out;
2959 }
2960 }
2961
2962 out:
2963 spin_unlock_bh(&dev->bss_lock);
2964
2965 cb->args[1] = idx;
2966 err = skb->len;
2967 cfg80211_put_dev(dev);
2968 out_put_netdev:
2969 dev_put(netdev);
2970
2971 return err;
2972 }
2973
2974 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
2975 {
2976 return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
2977 auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
2978 auth_type == NL80211_AUTHTYPE_FT ||
2979 auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
2980 }
2981
2982 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
2983 {
2984 struct cfg80211_registered_device *drv;
2985 struct net_device *dev;
2986 struct cfg80211_auth_request req;
2987 struct wiphy *wiphy;
2988 int err;
2989
2990 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2991 return -EINVAL;
2992
2993 if (!info->attrs[NL80211_ATTR_MAC])
2994 return -EINVAL;
2995
2996 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
2997 return -EINVAL;
2998
2999 rtnl_lock();
3000
3001 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3002 if (err)
3003 goto unlock_rtnl;
3004
3005 if (!drv->ops->auth) {
3006 err = -EOPNOTSUPP;
3007 goto out;
3008 }
3009
3010 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3011 err = -EOPNOTSUPP;
3012 goto out;
3013 }
3014
3015 if (!netif_running(dev)) {
3016 err = -ENETDOWN;
3017 goto out;
3018 }
3019
3020 wiphy = &drv->wiphy;
3021 memset(&req, 0, sizeof(req));
3022
3023 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3024
3025 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3026 req.chan = ieee80211_get_channel(
3027 wiphy,
3028 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3029 if (!req.chan) {
3030 err = -EINVAL;
3031 goto out;
3032 }
3033 }
3034
3035 if (info->attrs[NL80211_ATTR_SSID]) {
3036 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3037 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3038 }
3039
3040 if (info->attrs[NL80211_ATTR_IE]) {
3041 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3042 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3043 }
3044
3045 req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3046 if (!nl80211_valid_auth_type(req.auth_type)) {
3047 err = -EINVAL;
3048 goto out;
3049 }
3050
3051 err = drv->ops->auth(&drv->wiphy, dev, &req);
3052
3053 out:
3054 cfg80211_put_dev(drv);
3055 dev_put(dev);
3056 unlock_rtnl:
3057 rtnl_unlock();
3058 return err;
3059 }
3060
3061 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3062 {
3063 struct cfg80211_registered_device *drv;
3064 struct net_device *dev;
3065 struct cfg80211_assoc_request req;
3066 struct wiphy *wiphy;
3067 int err;
3068
3069 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3070 return -EINVAL;
3071
3072 if (!info->attrs[NL80211_ATTR_MAC] ||
3073 !info->attrs[NL80211_ATTR_SSID])
3074 return -EINVAL;
3075
3076 rtnl_lock();
3077
3078 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3079 if (err)
3080 goto unlock_rtnl;
3081
3082 if (!drv->ops->assoc) {
3083 err = -EOPNOTSUPP;
3084 goto out;
3085 }
3086
3087 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3088 err = -EOPNOTSUPP;
3089 goto out;
3090 }
3091
3092 if (!netif_running(dev)) {
3093 err = -ENETDOWN;
3094 goto out;
3095 }
3096
3097 wiphy = &drv->wiphy;
3098 memset(&req, 0, sizeof(req));
3099
3100 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3101
3102 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3103 req.chan = ieee80211_get_channel(
3104 wiphy,
3105 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3106 if (!req.chan) {
3107 err = -EINVAL;
3108 goto out;
3109 }
3110 }
3111
3112 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3113 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3114
3115 if (info->attrs[NL80211_ATTR_IE]) {
3116 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3117 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3118 }
3119
3120 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3121 enum nl80211_mfp use_mfp =
3122 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3123 if (use_mfp == NL80211_MFP_REQUIRED)
3124 req.use_mfp = true;
3125 else if (use_mfp != NL80211_MFP_NO) {
3126 err = -EINVAL;
3127 goto out;
3128 }
3129 }
3130
3131 req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3132
3133 err = drv->ops->assoc(&drv->wiphy, dev, &req);
3134
3135 out:
3136 cfg80211_put_dev(drv);
3137 dev_put(dev);
3138 unlock_rtnl:
3139 rtnl_unlock();
3140 return err;
3141 }
3142
3143 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3144 {
3145 struct cfg80211_registered_device *drv;
3146 struct net_device *dev;
3147 struct cfg80211_deauth_request req;
3148 struct wiphy *wiphy;
3149 int err;
3150
3151 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3152 return -EINVAL;
3153
3154 if (!info->attrs[NL80211_ATTR_MAC])
3155 return -EINVAL;
3156
3157 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3158 return -EINVAL;
3159
3160 rtnl_lock();
3161
3162 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3163 if (err)
3164 goto unlock_rtnl;
3165
3166 if (!drv->ops->deauth) {
3167 err = -EOPNOTSUPP;
3168 goto out;
3169 }
3170
3171 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3172 err = -EOPNOTSUPP;
3173 goto out;
3174 }
3175
3176 if (!netif_running(dev)) {
3177 err = -ENETDOWN;
3178 goto out;
3179 }
3180
3181 wiphy = &drv->wiphy;
3182 memset(&req, 0, sizeof(req));
3183
3184 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3185
3186 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3187 if (req.reason_code == 0) {
3188 /* Reason Code 0 is reserved */
3189 err = -EINVAL;
3190 goto out;
3191 }
3192
3193 if (info->attrs[NL80211_ATTR_IE]) {
3194 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3195 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3196 }
3197
3198 err = drv->ops->deauth(&drv->wiphy, dev, &req);
3199
3200 out:
3201 cfg80211_put_dev(drv);
3202 dev_put(dev);
3203 unlock_rtnl:
3204 rtnl_unlock();
3205 return err;
3206 }
3207
3208 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3209 {
3210 struct cfg80211_registered_device *drv;
3211 struct net_device *dev;
3212 struct cfg80211_disassoc_request req;
3213 struct wiphy *wiphy;
3214 int err;
3215
3216 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3217 return -EINVAL;
3218
3219 if (!info->attrs[NL80211_ATTR_MAC])
3220 return -EINVAL;
3221
3222 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3223 return -EINVAL;
3224
3225 rtnl_lock();
3226
3227 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3228 if (err)
3229 goto unlock_rtnl;
3230
3231 if (!drv->ops->disassoc) {
3232 err = -EOPNOTSUPP;
3233 goto out;
3234 }
3235
3236 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3237 err = -EOPNOTSUPP;
3238 goto out;
3239 }
3240
3241 if (!netif_running(dev)) {
3242 err = -ENETDOWN;
3243 goto out;
3244 }
3245
3246 wiphy = &drv->wiphy;
3247 memset(&req, 0, sizeof(req));
3248
3249 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3250
3251 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3252 if (req.reason_code == 0) {
3253 /* Reason Code 0 is reserved */
3254 err = -EINVAL;
3255 goto out;
3256 }
3257
3258 if (info->attrs[NL80211_ATTR_IE]) {
3259 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3260 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3261 }
3262
3263 err = drv->ops->disassoc(&drv->wiphy, dev, &req);
3264
3265 out:
3266 cfg80211_put_dev(drv);
3267 dev_put(dev);
3268 unlock_rtnl:
3269 rtnl_unlock();
3270 return err;
3271 }
3272
3273 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3274 {
3275 struct cfg80211_registered_device *drv;
3276 struct net_device *dev;
3277 struct cfg80211_ibss_params ibss;
3278 struct wiphy *wiphy;
3279 int err;
3280
3281 memset(&ibss, 0, sizeof(ibss));
3282
3283 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3284 return -EINVAL;
3285
3286 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3287 !info->attrs[NL80211_ATTR_SSID] ||
3288 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3289 return -EINVAL;
3290
3291 ibss.beacon_interval = 100;
3292
3293 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3294 ibss.beacon_interval =
3295 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3296 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3297 return -EINVAL;
3298 }
3299
3300 rtnl_lock();
3301
3302 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3303 if (err)
3304 goto unlock_rtnl;
3305
3306 if (!drv->ops->join_ibss) {
3307 err = -EOPNOTSUPP;
3308 goto out;
3309 }
3310
3311 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3312 err = -EOPNOTSUPP;
3313 goto out;
3314 }
3315
3316 if (!netif_running(dev)) {
3317 err = -ENETDOWN;
3318 goto out;
3319 }
3320
3321 wiphy = &drv->wiphy;
3322
3323 if (info->attrs[NL80211_ATTR_MAC])
3324 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3325 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3326 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3327
3328 if (info->attrs[NL80211_ATTR_IE]) {
3329 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3330 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3331 }
3332
3333 ibss.channel = ieee80211_get_channel(wiphy,
3334 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3335 if (!ibss.channel ||
3336 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3337 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3338 err = -EINVAL;
3339 goto out;
3340 }
3341
3342 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3343
3344 err = cfg80211_join_ibss(drv, dev, &ibss);
3345
3346 out:
3347 cfg80211_put_dev(drv);
3348 dev_put(dev);
3349 unlock_rtnl:
3350 rtnl_unlock();
3351 return err;
3352 }
3353
3354 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3355 {
3356 struct cfg80211_registered_device *drv;
3357 struct net_device *dev;
3358 int err;
3359
3360 rtnl_lock();
3361
3362 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3363 if (err)
3364 goto unlock_rtnl;
3365
3366 if (!drv->ops->leave_ibss) {
3367 err = -EOPNOTSUPP;
3368 goto out;
3369 }
3370
3371 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3372 err = -EOPNOTSUPP;
3373 goto out;
3374 }
3375
3376 if (!netif_running(dev)) {
3377 err = -ENETDOWN;
3378 goto out;
3379 }
3380
3381 err = cfg80211_leave_ibss(drv, dev, false);
3382
3383 out:
3384 cfg80211_put_dev(drv);
3385 dev_put(dev);
3386 unlock_rtnl:
3387 rtnl_unlock();
3388 return err;
3389 }
3390
3391 static struct genl_ops nl80211_ops[] = {
3392 {
3393 .cmd = NL80211_CMD_GET_WIPHY,
3394 .doit = nl80211_get_wiphy,
3395 .dumpit = nl80211_dump_wiphy,
3396 .policy = nl80211_policy,
3397 /* can be retrieved by unprivileged users */
3398 },
3399 {
3400 .cmd = NL80211_CMD_SET_WIPHY,
3401 .doit = nl80211_set_wiphy,
3402 .policy = nl80211_policy,
3403 .flags = GENL_ADMIN_PERM,
3404 },
3405 {
3406 .cmd = NL80211_CMD_GET_INTERFACE,
3407 .doit = nl80211_get_interface,
3408 .dumpit = nl80211_dump_interface,
3409 .policy = nl80211_policy,
3410 /* can be retrieved by unprivileged users */
3411 },
3412 {
3413 .cmd = NL80211_CMD_SET_INTERFACE,
3414 .doit = nl80211_set_interface,
3415 .policy = nl80211_policy,
3416 .flags = GENL_ADMIN_PERM,
3417 },
3418 {
3419 .cmd = NL80211_CMD_NEW_INTERFACE,
3420 .doit = nl80211_new_interface,
3421 .policy = nl80211_policy,
3422 .flags = GENL_ADMIN_PERM,
3423 },
3424 {
3425 .cmd = NL80211_CMD_DEL_INTERFACE,
3426 .doit = nl80211_del_interface,
3427 .policy = nl80211_policy,
3428 .flags = GENL_ADMIN_PERM,
3429 },
3430 {
3431 .cmd = NL80211_CMD_GET_KEY,
3432 .doit = nl80211_get_key,
3433 .policy = nl80211_policy,
3434 .flags = GENL_ADMIN_PERM,
3435 },
3436 {
3437 .cmd = NL80211_CMD_SET_KEY,
3438 .doit = nl80211_set_key,
3439 .policy = nl80211_policy,
3440 .flags = GENL_ADMIN_PERM,
3441 },
3442 {
3443 .cmd = NL80211_CMD_NEW_KEY,
3444 .doit = nl80211_new_key,
3445 .policy = nl80211_policy,
3446 .flags = GENL_ADMIN_PERM,
3447 },
3448 {
3449 .cmd = NL80211_CMD_DEL_KEY,
3450 .doit = nl80211_del_key,
3451 .policy = nl80211_policy,
3452 .flags = GENL_ADMIN_PERM,
3453 },
3454 {
3455 .cmd = NL80211_CMD_SET_BEACON,
3456 .policy = nl80211_policy,
3457 .flags = GENL_ADMIN_PERM,
3458 .doit = nl80211_addset_beacon,
3459 },
3460 {
3461 .cmd = NL80211_CMD_NEW_BEACON,
3462 .policy = nl80211_policy,
3463 .flags = GENL_ADMIN_PERM,
3464 .doit = nl80211_addset_beacon,
3465 },
3466 {
3467 .cmd = NL80211_CMD_DEL_BEACON,
3468 .policy = nl80211_policy,
3469 .flags = GENL_ADMIN_PERM,
3470 .doit = nl80211_del_beacon,
3471 },
3472 {
3473 .cmd = NL80211_CMD_GET_STATION,
3474 .doit = nl80211_get_station,
3475 .dumpit = nl80211_dump_station,
3476 .policy = nl80211_policy,
3477 },
3478 {
3479 .cmd = NL80211_CMD_SET_STATION,
3480 .doit = nl80211_set_station,
3481 .policy = nl80211_policy,
3482 .flags = GENL_ADMIN_PERM,
3483 },
3484 {
3485 .cmd = NL80211_CMD_NEW_STATION,
3486 .doit = nl80211_new_station,
3487 .policy = nl80211_policy,
3488 .flags = GENL_ADMIN_PERM,
3489 },
3490 {
3491 .cmd = NL80211_CMD_DEL_STATION,
3492 .doit = nl80211_del_station,
3493 .policy = nl80211_policy,
3494 .flags = GENL_ADMIN_PERM,
3495 },
3496 {
3497 .cmd = NL80211_CMD_GET_MPATH,
3498 .doit = nl80211_get_mpath,
3499 .dumpit = nl80211_dump_mpath,
3500 .policy = nl80211_policy,
3501 .flags = GENL_ADMIN_PERM,
3502 },
3503 {
3504 .cmd = NL80211_CMD_SET_MPATH,
3505 .doit = nl80211_set_mpath,
3506 .policy = nl80211_policy,
3507 .flags = GENL_ADMIN_PERM,
3508 },
3509 {
3510 .cmd = NL80211_CMD_NEW_MPATH,
3511 .doit = nl80211_new_mpath,
3512 .policy = nl80211_policy,
3513 .flags = GENL_ADMIN_PERM,
3514 },
3515 {
3516 .cmd = NL80211_CMD_DEL_MPATH,
3517 .doit = nl80211_del_mpath,
3518 .policy = nl80211_policy,
3519 .flags = GENL_ADMIN_PERM,
3520 },
3521 {
3522 .cmd = NL80211_CMD_SET_BSS,
3523 .doit = nl80211_set_bss,
3524 .policy = nl80211_policy,
3525 .flags = GENL_ADMIN_PERM,
3526 },
3527 {
3528 .cmd = NL80211_CMD_GET_REG,
3529 .doit = nl80211_get_reg,
3530 .policy = nl80211_policy,
3531 /* can be retrieved by unprivileged users */
3532 },
3533 {
3534 .cmd = NL80211_CMD_SET_REG,
3535 .doit = nl80211_set_reg,
3536 .policy = nl80211_policy,
3537 .flags = GENL_ADMIN_PERM,
3538 },
3539 {
3540 .cmd = NL80211_CMD_REQ_SET_REG,
3541 .doit = nl80211_req_set_reg,
3542 .policy = nl80211_policy,
3543 .flags = GENL_ADMIN_PERM,
3544 },
3545 {
3546 .cmd = NL80211_CMD_GET_MESH_PARAMS,
3547 .doit = nl80211_get_mesh_params,
3548 .policy = nl80211_policy,
3549 /* can be retrieved by unprivileged users */
3550 },
3551 {
3552 .cmd = NL80211_CMD_SET_MESH_PARAMS,
3553 .doit = nl80211_set_mesh_params,
3554 .policy = nl80211_policy,
3555 .flags = GENL_ADMIN_PERM,
3556 },
3557 {
3558 .cmd = NL80211_CMD_TRIGGER_SCAN,
3559 .doit = nl80211_trigger_scan,
3560 .policy = nl80211_policy,
3561 .flags = GENL_ADMIN_PERM,
3562 },
3563 {
3564 .cmd = NL80211_CMD_GET_SCAN,
3565 .policy = nl80211_policy,
3566 .dumpit = nl80211_dump_scan,
3567 },
3568 {
3569 .cmd = NL80211_CMD_AUTHENTICATE,
3570 .doit = nl80211_authenticate,
3571 .policy = nl80211_policy,
3572 .flags = GENL_ADMIN_PERM,
3573 },
3574 {
3575 .cmd = NL80211_CMD_ASSOCIATE,
3576 .doit = nl80211_associate,
3577 .policy = nl80211_policy,
3578 .flags = GENL_ADMIN_PERM,
3579 },
3580 {
3581 .cmd = NL80211_CMD_DEAUTHENTICATE,
3582 .doit = nl80211_deauthenticate,
3583 .policy = nl80211_policy,
3584 .flags = GENL_ADMIN_PERM,
3585 },
3586 {
3587 .cmd = NL80211_CMD_DISASSOCIATE,
3588 .doit = nl80211_disassociate,
3589 .policy = nl80211_policy,
3590 .flags = GENL_ADMIN_PERM,
3591 },
3592 {
3593 .cmd = NL80211_CMD_JOIN_IBSS,
3594 .doit = nl80211_join_ibss,
3595 .policy = nl80211_policy,
3596 .flags = GENL_ADMIN_PERM,
3597 },
3598 {
3599 .cmd = NL80211_CMD_LEAVE_IBSS,
3600 .doit = nl80211_leave_ibss,
3601 .policy = nl80211_policy,
3602 .flags = GENL_ADMIN_PERM,
3603 },
3604 };
3605 static struct genl_multicast_group nl80211_mlme_mcgrp = {
3606 .name = "mlme",
3607 };
3608
3609 /* multicast groups */
3610 static struct genl_multicast_group nl80211_config_mcgrp = {
3611 .name = "config",
3612 };
3613 static struct genl_multicast_group nl80211_scan_mcgrp = {
3614 .name = "scan",
3615 };
3616 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
3617 .name = "regulatory",
3618 };
3619
3620 /* notification functions */
3621
3622 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
3623 {
3624 struct sk_buff *msg;
3625
3626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3627 if (!msg)
3628 return;
3629
3630 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
3631 nlmsg_free(msg);
3632 return;
3633 }
3634
3635 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
3636 }
3637
3638 static int nl80211_add_scan_req(struct sk_buff *msg,
3639 struct cfg80211_registered_device *rdev)
3640 {
3641 struct cfg80211_scan_request *req = rdev->scan_req;
3642 struct nlattr *nest;
3643 int i;
3644
3645 if (WARN_ON(!req))
3646 return 0;
3647
3648 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
3649 if (!nest)
3650 goto nla_put_failure;
3651 for (i = 0; i < req->n_ssids; i++)
3652 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
3653 nla_nest_end(msg, nest);
3654
3655 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
3656 if (!nest)
3657 goto nla_put_failure;
3658 for (i = 0; i < req->n_channels; i++)
3659 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
3660 nla_nest_end(msg, nest);
3661
3662 if (req->ie)
3663 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
3664
3665 return 0;
3666 nla_put_failure:
3667 return -ENOBUFS;
3668 }
3669
3670 static int nl80211_send_scan_donemsg(struct sk_buff *msg,
3671 struct cfg80211_registered_device *rdev,
3672 struct net_device *netdev,
3673 u32 pid, u32 seq, int flags,
3674 u32 cmd)
3675 {
3676 void *hdr;
3677
3678 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
3679 if (!hdr)
3680 return -1;
3681
3682 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3683 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3684
3685 /* ignore errors and send incomplete event anyway */
3686 nl80211_add_scan_req(msg, rdev);
3687
3688 return genlmsg_end(msg, hdr);
3689
3690 nla_put_failure:
3691 genlmsg_cancel(msg, hdr);
3692 return -EMSGSIZE;
3693 }
3694
3695 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
3696 struct net_device *netdev)
3697 {
3698 struct sk_buff *msg;
3699
3700 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3701 if (!msg)
3702 return;
3703
3704 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3705 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
3706 nlmsg_free(msg);
3707 return;
3708 }
3709
3710 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3711 }
3712
3713 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
3714 struct net_device *netdev)
3715 {
3716 struct sk_buff *msg;
3717
3718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3719 if (!msg)
3720 return;
3721
3722 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3723 NL80211_CMD_SCAN_ABORTED) < 0) {
3724 nlmsg_free(msg);
3725 return;
3726 }
3727
3728 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3729 }
3730
3731 /*
3732 * This can happen on global regulatory changes or device specific settings
3733 * based on custom world regulatory domains.
3734 */
3735 void nl80211_send_reg_change_event(struct regulatory_request *request)
3736 {
3737 struct sk_buff *msg;
3738 void *hdr;
3739
3740 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3741 if (!msg)
3742 return;
3743
3744 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
3745 if (!hdr) {
3746 nlmsg_free(msg);
3747 return;
3748 }
3749
3750 /* Userspace can always count this one always being set */
3751 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
3752
3753 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
3754 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3755 NL80211_REGDOM_TYPE_WORLD);
3756 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
3757 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3758 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
3759 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
3760 request->intersect)
3761 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3762 NL80211_REGDOM_TYPE_INTERSECTION);
3763 else {
3764 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3765 NL80211_REGDOM_TYPE_COUNTRY);
3766 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
3767 }
3768
3769 if (wiphy_idx_valid(request->wiphy_idx))
3770 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
3771
3772 if (genlmsg_end(msg, hdr) < 0) {
3773 nlmsg_free(msg);
3774 return;
3775 }
3776
3777 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
3778
3779 return;
3780
3781 nla_put_failure:
3782 genlmsg_cancel(msg, hdr);
3783 nlmsg_free(msg);
3784 }
3785
3786 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
3787 struct net_device *netdev,
3788 const u8 *buf, size_t len,
3789 enum nl80211_commands cmd)
3790 {
3791 struct sk_buff *msg;
3792 void *hdr;
3793
3794 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3795 if (!msg)
3796 return;
3797
3798 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3799 if (!hdr) {
3800 nlmsg_free(msg);
3801 return;
3802 }
3803
3804 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3805 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3806 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
3807
3808 if (genlmsg_end(msg, hdr) < 0) {
3809 nlmsg_free(msg);
3810 return;
3811 }
3812
3813 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3814 return;
3815
3816 nla_put_failure:
3817 genlmsg_cancel(msg, hdr);
3818 nlmsg_free(msg);
3819 }
3820
3821 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
3822 struct net_device *netdev, const u8 *buf, size_t len)
3823 {
3824 nl80211_send_mlme_event(rdev, netdev, buf, len,
3825 NL80211_CMD_AUTHENTICATE);
3826 }
3827
3828 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
3829 struct net_device *netdev, const u8 *buf,
3830 size_t len)
3831 {
3832 nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
3833 }
3834
3835 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
3836 struct net_device *netdev, const u8 *buf, size_t len)
3837 {
3838 nl80211_send_mlme_event(rdev, netdev, buf, len,
3839 NL80211_CMD_DEAUTHENTICATE);
3840 }
3841
3842 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
3843 struct net_device *netdev, const u8 *buf,
3844 size_t len)
3845 {
3846 nl80211_send_mlme_event(rdev, netdev, buf, len,
3847 NL80211_CMD_DISASSOCIATE);
3848 }
3849
3850 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
3851 struct net_device *netdev, int cmd,
3852 const u8 *addr)
3853 {
3854 struct sk_buff *msg;
3855 void *hdr;
3856
3857 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3858 if (!msg)
3859 return;
3860
3861 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3862 if (!hdr) {
3863 nlmsg_free(msg);
3864 return;
3865 }
3866
3867 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3868 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3869 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
3870 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3871
3872 if (genlmsg_end(msg, hdr) < 0) {
3873 nlmsg_free(msg);
3874 return;
3875 }
3876
3877 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3878 return;
3879
3880 nla_put_failure:
3881 genlmsg_cancel(msg, hdr);
3882 nlmsg_free(msg);
3883 }
3884
3885 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
3886 struct net_device *netdev, const u8 *addr)
3887 {
3888 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
3889 addr);
3890 }
3891
3892 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
3893 struct net_device *netdev, const u8 *addr)
3894 {
3895 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
3896 }
3897
3898 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
3899 struct net_device *netdev, const u8 *bssid,
3900 gfp_t gfp)
3901 {
3902 struct sk_buff *msg;
3903 void *hdr;
3904
3905 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3906 if (!msg)
3907 return;
3908
3909 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
3910 if (!hdr) {
3911 nlmsg_free(msg);
3912 return;
3913 }
3914
3915 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3916 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3917 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
3918
3919 if (genlmsg_end(msg, hdr) < 0) {
3920 nlmsg_free(msg);
3921 return;
3922 }
3923
3924 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3925 return;
3926
3927 nla_put_failure:
3928 genlmsg_cancel(msg, hdr);
3929 nlmsg_free(msg);
3930 }
3931
3932 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
3933 struct net_device *netdev, const u8 *addr,
3934 enum nl80211_key_type key_type, int key_id,
3935 const u8 *tsc)
3936 {
3937 struct sk_buff *msg;
3938 void *hdr;
3939
3940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3941 if (!msg)
3942 return;
3943
3944 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
3945 if (!hdr) {
3946 nlmsg_free(msg);
3947 return;
3948 }
3949
3950 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3951 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3952 if (addr)
3953 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3954 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
3955 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
3956 if (tsc)
3957 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
3958
3959 if (genlmsg_end(msg, hdr) < 0) {
3960 nlmsg_free(msg);
3961 return;
3962 }
3963
3964 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3965 return;
3966
3967 nla_put_failure:
3968 genlmsg_cancel(msg, hdr);
3969 nlmsg_free(msg);
3970 }
3971
3972 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
3973 struct ieee80211_channel *channel_before,
3974 struct ieee80211_channel *channel_after)
3975 {
3976 struct sk_buff *msg;
3977 void *hdr;
3978 struct nlattr *nl_freq;
3979
3980 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3981 if (!msg)
3982 return;
3983
3984 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
3985 if (!hdr) {
3986 nlmsg_free(msg);
3987 return;
3988 }
3989
3990 /*
3991 * Since we are applying the beacon hint to a wiphy we know its
3992 * wiphy_idx is valid
3993 */
3994 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
3995
3996 /* Before */
3997 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
3998 if (!nl_freq)
3999 goto nla_put_failure;
4000 if (nl80211_msg_put_channel(msg, channel_before))
4001 goto nla_put_failure;
4002 nla_nest_end(msg, nl_freq);
4003
4004 /* After */
4005 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
4006 if (!nl_freq)
4007 goto nla_put_failure;
4008 if (nl80211_msg_put_channel(msg, channel_after))
4009 goto nla_put_failure;
4010 nla_nest_end(msg, nl_freq);
4011
4012 if (genlmsg_end(msg, hdr) < 0) {
4013 nlmsg_free(msg);
4014 return;
4015 }
4016
4017 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
4018
4019 return;
4020
4021 nla_put_failure:
4022 genlmsg_cancel(msg, hdr);
4023 nlmsg_free(msg);
4024 }
4025
4026 /* initialisation/exit functions */
4027
4028 int nl80211_init(void)
4029 {
4030 int err;
4031
4032 err = genl_register_family_with_ops(&nl80211_fam,
4033 nl80211_ops, ARRAY_SIZE(nl80211_ops));
4034 if (err)
4035 return err;
4036
4037 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
4038 if (err)
4039 goto err_out;
4040
4041 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
4042 if (err)
4043 goto err_out;
4044
4045 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
4046 if (err)
4047 goto err_out;
4048
4049 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
4050 if (err)
4051 goto err_out;
4052
4053 return 0;
4054 err_out:
4055 genl_unregister_family(&nl80211_fam);
4056 return err;
4057 }
4058
4059 void nl80211_exit(void)
4060 {
4061 genl_unregister_family(&nl80211_fam);
4062 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree