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ath9k: get rid of unnecessary setpower calls
[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c
CommitLineData
55682965
JB		 1/*
2 * This is the new netlink-based wireless configuration interface.
3 *
08645126 4 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
55682965
JB		 5 */
6
7#include <linux/if.h>
8#include <linux/module.h>
9#include <linux/err.h>
55682965
JB		 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>
2a519311 16#include <linux/etherdevice.h>
463d0183 17#include <net/net_namespace.h>
55682965
JB		 18#include <net/genetlink.h>
19#include <net/cfg80211.h>
463d0183 20#include <net/sock.h>
55682965
JB		 21#include "core.h"
22#include "nl80211.h"
b2e1b302 23#include "reg.h"
55682965
JB		 24
25/* the netlink family */
26static struct genl_family nl80211_fam = {
27 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
28 .name = "nl80211", /* have users key off the name instead */
29 .hdrsize = 0, /* no private header */
30 .version = 1, /* no particular meaning now */
31 .maxattr = NL80211_ATTR_MAX,
463d0183 32 .netnsok = true,
55682965
JB		 33};
34
79c97e97 35/* internal helper: get rdev and dev */
463d0183 36static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
79c97e97 37 struct cfg80211_registered_device **rdev,
55682965
JB		 38 struct net_device **dev)
39{
463d0183 40 struct nlattr **attrs = info->attrs;
55682965
JB		 41 int ifindex;
42
bba95fef 43 if (!attrs[NL80211_ATTR_IFINDEX])
55682965
JB		 44 return -EINVAL;
45
bba95fef 46 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
463d0183 47 *dev = dev_get_by_index(genl_info_net(info), ifindex);
55682965
JB		 48 if (!*dev)
49 return -ENODEV;
50
463d0183 51 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
79c97e97 52 if (IS_ERR(*rdev)) {
55682965 53 dev_put(*dev);
79c97e97 54 return PTR_ERR(*rdev);
55682965
JB		 55 }
56
57 return 0;
58}
59
60/* policy for the attributes */
61static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
62 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
63 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
079e24ed 64 .len = 20-1 },
31888487 65 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
72bdcf34 66 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
094d05dc 67 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
b9a5f8ca
JM		 68 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
69 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
70 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
71 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
55682965
JB		 72
73 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
74 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
75 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
41ade00f
JB		 76
77 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
3e5d7649 78 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
41ade00f 79
b9454e83 80 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
41ade00f
JB		 81 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
82 .len = WLAN_MAX_KEY_LEN },
83 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
84 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
85 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
9f26a952 86 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
ed1b6cc7
JB		 87
88 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
89 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
90 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
91 .len = IEEE80211_MAX_DATA_LEN },
92 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
93 .len = IEEE80211_MAX_DATA_LEN },
5727ef1b
JB		 94 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
95 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
96 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
97 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
98 .len = NL80211_MAX_SUPP_RATES },
2ec600d6 99 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
5727ef1b 100 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
0a9542ee 101 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
2ec600d6
LCC		 102 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_MESH_ID_LEN },
104 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
9f1ba906 105
b2e1b302
LR		 106 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
107 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
108
9f1ba906
JM		 109 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
110 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
111 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
90c97a04
JM		 112 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
113 .len = NL80211_MAX_SUPP_RATES },
36aedc90 114
93da9cc1 115 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
116
36aedc90
JM		 117 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
118 .len = NL80211_HT_CAPABILITY_LEN },
9aed3cc1
JM		 119
120 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
121 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
122 .len = IEEE80211_MAX_DATA_LEN },
2a519311
JB		 123 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
124 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
636a5d36
JM		 125
126 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
127 .len = IEEE80211_MAX_SSID_LEN },
128 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
129 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
04a773ad 130 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
1965c853 131 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
dc6382ce 132 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
eccb8e8f
JB		 133 [NL80211_ATTR_STA_FLAGS2] = {
134 .len = sizeof(struct nl80211_sta_flag_update),
135 },
3f77316c 136 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
b23aa676
SO		 137 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
138 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
139 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
463d0183 140 [NL80211_ATTR_PID] = { .type = NLA_U32 },
55682965
JB		 141};
142
b9454e83
JB		 143/* policy for the attributes */
144static struct nla_policy
145nl80211_key_policy[NL80211_KEY_MAX + 1] __read_mostly = {
fffd0934 146 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
b9454e83
JB		 147 [NL80211_KEY_IDX] = { .type = NLA_U8 },
148 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
149 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
150 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
151 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
152};
153
f4a11bb0
JB		 154/* IE validation */
155static bool is_valid_ie_attr(const struct nlattr *attr)
156{
157 const u8 *pos;
158 int len;
159
160 if (!attr)
161 return true;
162
163 pos = nla_data(attr);
164 len = nla_len(attr);
165
166 while (len) {
167 u8 elemlen;
168
169 if (len < 2)
170 return false;
171 len -= 2;
172
173 elemlen = pos[1];
174 if (elemlen > len)
175 return false;
176
177 len -= elemlen;
178 pos += 2 + elemlen;
179 }
180
181 return true;
182}
183
55682965
JB		 184/* message building helper */
185static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
186 int flags, u8 cmd)
187{
188 /* since there is no private header just add the generic one */
189 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
190}
191
5dab3b8a
LR		 192static int nl80211_msg_put_channel(struct sk_buff *msg,
193 struct ieee80211_channel *chan)
194{
195 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
196 chan->center_freq);
197
198 if (chan->flags & IEEE80211_CHAN_DISABLED)
199 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
200 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
201 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
202 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
203 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
204 if (chan->flags & IEEE80211_CHAN_RADAR)
205 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
206
207 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
208 DBM_TO_MBM(chan->max_power));
209
210 return 0;
211
212 nla_put_failure:
213 return -ENOBUFS;
214}
215
55682965
JB		 216/* netlink command implementations */
217
b9454e83
JB		 218struct key_parse {
219 struct key_params p;
220 int idx;
221 bool def, defmgmt;
222};
223
224static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
225{
226 struct nlattr *tb[NL80211_KEY_MAX + 1];
227 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
228 nl80211_key_policy);
229 if (err)
230 return err;
231
232 k->def = !!tb[NL80211_KEY_DEFAULT];
233 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
234
235 if (tb[NL80211_KEY_IDX])
236 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
237
238 if (tb[NL80211_KEY_DATA]) {
239 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
240 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
241 }
242
243 if (tb[NL80211_KEY_SEQ]) {
244 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
245 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
246 }
247
248 if (tb[NL80211_KEY_CIPHER])
249 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
250
251 return 0;
252}
253
254static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
255{
256 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
257 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
258 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
259 }
260
261 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
262 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
263 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
264 }
265
266 if (info->attrs[NL80211_ATTR_KEY_IDX])
267 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
268
269 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
270 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
271
272 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
273 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
274
275 return 0;
276}
277
278static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
279{
280 int err;
281
282 memset(k, 0, sizeof(*k));
283 k->idx = -1;
284
285 if (info->attrs[NL80211_ATTR_KEY])
286 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
287 else
288 err = nl80211_parse_key_old(info, k);
289
290 if (err)
291 return err;
292
293 if (k->def && k->defmgmt)
294 return -EINVAL;
295
296 if (k->idx != -1) {
297 if (k->defmgmt) {
298 if (k->idx < 4 || k->idx > 5)
299 return -EINVAL;
300 } else if (k->def) {
301 if (k->idx < 0 || k->idx > 3)
302 return -EINVAL;
303 } else {
304 if (k->idx < 0 || k->idx > 5)
305 return -EINVAL;
306 }
307 }
308
309 return 0;
310}
311
fffd0934
JB		 312static struct cfg80211_cached_keys *
313nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
314 struct nlattr *keys)
315{
316 struct key_parse parse;
317 struct nlattr *key;
318 struct cfg80211_cached_keys *result;
319 int rem, err, def = 0;
320
321 result = kzalloc(sizeof(*result), GFP_KERNEL);
322 if (!result)
323 return ERR_PTR(-ENOMEM);
324
325 result->def = -1;
326 result->defmgmt = -1;
327
328 nla_for_each_nested(key, keys, rem) {
329 memset(&parse, 0, sizeof(parse));
330 parse.idx = -1;
331
332 err = nl80211_parse_key_new(key, &parse);
333 if (err)
334 goto error;
335 err = -EINVAL;
336 if (!parse.p.key)
337 goto error;
338 if (parse.idx < 0 || parse.idx > 4)
339 goto error;
340 if (parse.def) {
341 if (def)
342 goto error;
343 def = 1;
344 result->def = parse.idx;
345 } else if (parse.defmgmt)
346 goto error;
347 err = cfg80211_validate_key_settings(rdev, &parse.p,
348 parse.idx, NULL);
349 if (err)
350 goto error;
351 result->params[parse.idx].cipher = parse.p.cipher;
352 result->params[parse.idx].key_len = parse.p.key_len;
353 result->params[parse.idx].key = result->data[parse.idx];
354 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
355 }
356
357 return result;
358 error:
359 kfree(result);
360 return ERR_PTR(err);
361}
362
363static int nl80211_key_allowed(struct wireless_dev *wdev)
364{
365 ASSERT_WDEV_LOCK(wdev);
366
367 if (!netif_running(wdev->netdev))
368 return -ENETDOWN;
369
370 switch (wdev->iftype) {
371 case NL80211_IFTYPE_AP:
372 case NL80211_IFTYPE_AP_VLAN:
373 break;
374 case NL80211_IFTYPE_ADHOC:
375 if (!wdev->current_bss)
376 return -ENOLINK;
377 break;
378 case NL80211_IFTYPE_STATION:
379 if (wdev->sme_state != CFG80211_SME_CONNECTED)
380 return -ENOLINK;
381 break;
382 default:
383 return -EINVAL;
384 }
385
386 return 0;
387}
388
55682965
JB		 389static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
390 struct cfg80211_registered_device *dev)
391{
392 void *hdr;
ee688b00
JB		 393 struct nlattr *nl_bands, *nl_band;
394 struct nlattr *nl_freqs, *nl_freq;
395 struct nlattr *nl_rates, *nl_rate;
f59ac048 396 struct nlattr *nl_modes;
8fdc621d 397 struct nlattr *nl_cmds;
ee688b00
JB		 398 enum ieee80211_band band;
399 struct ieee80211_channel *chan;
400 struct ieee80211_rate *rate;
401 int i;
f59ac048 402 u16 ifmodes = dev->wiphy.interface_modes;
55682965
JB		 403
404 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
405 if (!hdr)
406 return -1;
407
b5850a7a 408 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
55682965 409 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
b9a5f8ca
JM		 410
411 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
412 dev->wiphy.retry_short);
413 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
414 dev->wiphy.retry_long);
415 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
416 dev->wiphy.frag_threshold);
417 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
418 dev->wiphy.rts_threshold);
419
2a519311
JB		 420 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
421 dev->wiphy.max_scan_ssids);
18a83659
JB		 422 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
423 dev->wiphy.max_scan_ie_len);
ee688b00 424
25e47c18
JB		 425 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
426 sizeof(u32) * dev->wiphy.n_cipher_suites,
427 dev->wiphy.cipher_suites);
428
f59ac048
LR		 429 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
430 if (!nl_modes)
431 goto nla_put_failure;
432
433 i = 0;
434 while (ifmodes) {
435 if (ifmodes & 1)
436 NLA_PUT_FLAG(msg, i);
437 ifmodes >>= 1;
438 i++;
439 }
440
441 nla_nest_end(msg, nl_modes);
442
ee688b00
JB		 443 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
444 if (!nl_bands)
445 goto nla_put_failure;
446
447 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
448 if (!dev->wiphy.bands[band])
449 continue;
450
451 nl_band = nla_nest_start(msg, band);
452 if (!nl_band)
453 goto nla_put_failure;
454
d51626df
JB		 455 /* add HT info */
456 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
457 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
458 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
459 &dev->wiphy.bands[band]->ht_cap.mcs);
460 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
461 dev->wiphy.bands[band]->ht_cap.cap);
462 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
463 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
464 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
465 dev->wiphy.bands[band]->ht_cap.ampdu_density);
466 }
467
ee688b00
JB		 468 /* add frequencies */
469 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
470 if (!nl_freqs)
471 goto nla_put_failure;
472
473 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
474 nl_freq = nla_nest_start(msg, i);
475 if (!nl_freq)
476 goto nla_put_failure;
477
478 chan = &dev->wiphy.bands[band]->channels[i];
5dab3b8a
LR		 479
480 if (nl80211_msg_put_channel(msg, chan))
481 goto nla_put_failure;
e2f367f2 482
ee688b00
JB		 483 nla_nest_end(msg, nl_freq);
484 }
485
486 nla_nest_end(msg, nl_freqs);
487
488 /* add bitrates */
489 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
490 if (!nl_rates)
491 goto nla_put_failure;
492
493 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
494 nl_rate = nla_nest_start(msg, i);
495 if (!nl_rate)
496 goto nla_put_failure;
497
498 rate = &dev->wiphy.bands[band]->bitrates[i];
499 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
500 rate->bitrate);
501 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
502 NLA_PUT_FLAG(msg,
503 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
504
505 nla_nest_end(msg, nl_rate);
506 }
507
508 nla_nest_end(msg, nl_rates);
509
510 nla_nest_end(msg, nl_band);
511 }
512 nla_nest_end(msg, nl_bands);
513
8fdc621d
JB		 514 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
515 if (!nl_cmds)
516 goto nla_put_failure;
517
518 i = 0;
519#define CMD(op, n) \
520 do { \
521 if (dev->ops->op) { \
522 i++; \
523 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
524 } \
525 } while (0)
526
527 CMD(add_virtual_intf, NEW_INTERFACE);
528 CMD(change_virtual_intf, SET_INTERFACE);
529 CMD(add_key, NEW_KEY);
530 CMD(add_beacon, NEW_BEACON);
531 CMD(add_station, NEW_STATION);
532 CMD(add_mpath, NEW_MPATH);
533 CMD(set_mesh_params, SET_MESH_PARAMS);
534 CMD(change_bss, SET_BSS);
636a5d36
JM		 535 CMD(auth, AUTHENTICATE);
536 CMD(assoc, ASSOCIATE);
537 CMD(deauth, DEAUTHENTICATE);
538 CMD(disassoc, DISASSOCIATE);
04a773ad 539 CMD(join_ibss, JOIN_IBSS);
463d0183
JB		 540 if (dev->wiphy.netnsok) {
541 i++;
542 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
543 }
8fdc621d
JB		 544
545#undef CMD
b23aa676 546
6829c878 547 if (dev->ops->connect || dev->ops->auth) {
b23aa676
SO		 548 i++;
549 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
550 }
551
6829c878 552 if (dev->ops->disconnect || dev->ops->deauth) {
b23aa676
SO		 553 i++;
554 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
555 }
556
8fdc621d
JB		 557 nla_nest_end(msg, nl_cmds);
558
55682965
JB		 559 return genlmsg_end(msg, hdr);
560
561 nla_put_failure:
bc3ed28c
TG		 562 genlmsg_cancel(msg, hdr);
563 return -EMSGSIZE;
55682965
JB		 564}
565
566static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
567{
568 int idx = 0;
569 int start = cb->args[0];
570 struct cfg80211_registered_device *dev;
571
a1794390 572 mutex_lock(&cfg80211_mutex);
79c97e97 573 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
463d0183
JB		 574 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
575 continue;
b4637271 576 if (++idx <= start)
55682965
JB		 577 continue;
578 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
579 cb->nlh->nlmsg_seq, NLM_F_MULTI,
b4637271
JV		 580 dev) < 0) {
581 idx--;
55682965 582 break;
b4637271 583 }
55682965 584 }
a1794390 585 mutex_unlock(&cfg80211_mutex);
55682965
JB		 586
587 cb->args[0] = idx;
588
589 return skb->len;
590}
591
592static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
593{
594 struct sk_buff *msg;
595 struct cfg80211_registered_device *dev;
596
597 dev = cfg80211_get_dev_from_info(info);
598 if (IS_ERR(dev))
599 return PTR_ERR(dev);
600
fd2120ca 601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
55682965
JB		 602 if (!msg)
603 goto out_err;
604
605 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
606 goto out_free;
607
4d0c8aea 608 cfg80211_unlock_rdev(dev);
55682965 609
134e6375 610 return genlmsg_reply(msg, info);
55682965
JB		 611
612 out_free:
613 nlmsg_free(msg);
614 out_err:
4d0c8aea 615 cfg80211_unlock_rdev(dev);
55682965
JB		 616 return -ENOBUFS;
617}
618
31888487
JM		 619static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
620 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
621 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
622 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
623 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
624 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
625};
626
627static int parse_txq_params(struct nlattr *tb[],
628 struct ieee80211_txq_params *txq_params)
629{
630 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
631 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
632 !tb[NL80211_TXQ_ATTR_AIFS])
633 return -EINVAL;
634
635 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
636 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
637 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
638 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
639 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
640
641 return 0;
642}
643
55682965
JB		 644static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
645{
646 struct cfg80211_registered_device *rdev;
31888487
JM		 647 int result = 0, rem_txq_params = 0;
648 struct nlattr *nl_txq_params;
b9a5f8ca
JM		 649 u32 changed;
650 u8 retry_short = 0, retry_long = 0;
651 u32 frag_threshold = 0, rts_threshold = 0;
55682965 652
4bbf4d56 653 rtnl_lock();
55682965 654
4bbf4d56
JB		 655 mutex_lock(&cfg80211_mutex);
656
79c97e97 657 rdev = __cfg80211_rdev_from_info(info);
4bbf4d56 658 if (IS_ERR(rdev)) {
1f5fc70a 659 mutex_unlock(&cfg80211_mutex);
4bbf4d56
JB		 660 result = PTR_ERR(rdev);
661 goto unlock;
662 }
663
664 mutex_lock(&rdev->mtx);
665
666 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
31888487
JM		 667 result = cfg80211_dev_rename(
668 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
4bbf4d56
JB		 669
670 mutex_unlock(&cfg80211_mutex);
671
672 if (result)
673 goto bad_res;
31888487
JM		 674
675 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
676 struct ieee80211_txq_params txq_params;
677 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
678
679 if (!rdev->ops->set_txq_params) {
680 result = -EOPNOTSUPP;
681 goto bad_res;
682 }
683
684 nla_for_each_nested(nl_txq_params,
685 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
686 rem_txq_params) {
687 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
688 nla_data(nl_txq_params),
689 nla_len(nl_txq_params),
690 txq_params_policy);
691 result = parse_txq_params(tb, &txq_params);
692 if (result)
693 goto bad_res;
694
695 result = rdev->ops->set_txq_params(&rdev->wiphy,
696 &txq_params);
697 if (result)
698 goto bad_res;
699 }
700 }
55682965 701
72bdcf34 702 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
094d05dc 703 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
72bdcf34 704 struct ieee80211_channel *chan;
306d6112 705 struct ieee80211_sta_ht_cap *ht_cap;
294196ab 706 u32 freq;
72bdcf34
JM		 707
708 if (!rdev->ops->set_channel) {
709 result = -EOPNOTSUPP;
710 goto bad_res;
711 }
712
306d6112
JB		 713 result = -EINVAL;
714
094d05dc
S		 715 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
716 channel_type = nla_get_u32(info->attrs[
717 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
718 if (channel_type != NL80211_CHAN_NO_HT &&
719 channel_type != NL80211_CHAN_HT20 &&
720 channel_type != NL80211_CHAN_HT40PLUS &&
721 channel_type != NL80211_CHAN_HT40MINUS)
72bdcf34 722 goto bad_res;
72bdcf34
JM		 723 }
724
725 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
726 chan = ieee80211_get_channel(&rdev->wiphy, freq);
306d6112
JB		 727
728 /* Primary channel not allowed */
729 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
72bdcf34 730 goto bad_res;
306d6112 731
294196ab
LR		 732 if (channel_type == NL80211_CHAN_HT40MINUS &&
733 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
306d6112 734 goto bad_res;
294196ab
LR		 735 else if (channel_type == NL80211_CHAN_HT40PLUS &&
736 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
306d6112
JB		 737 goto bad_res;
738
294196ab
LR		 739 /*
740 * At this point we know if that if HT40 was requested
741 * we are allowed to use it and the extension channel
742 * exists.
743 */
306d6112 744
294196ab 745 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
306d6112 746
294196ab
LR		 747 /* no HT capabilities or intolerant */
748 if (channel_type != NL80211_CHAN_NO_HT) {
749 if (!ht_cap->ht_supported)
750 goto bad_res;
306d6112
JB		 751 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
752 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
753 goto bad_res;
72bdcf34
JM		 754 }
755
756 result = rdev->ops->set_channel(&rdev->wiphy, chan,
094d05dc 757 channel_type);
72bdcf34
JM		 758 if (result)
759 goto bad_res;
760 }
761
b9a5f8ca
JM		 762 changed = 0;
763
764 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
765 retry_short = nla_get_u8(
766 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
767 if (retry_short == 0) {
768 result = -EINVAL;
769 goto bad_res;
770 }
771 changed |= WIPHY_PARAM_RETRY_SHORT;
772 }
773
774 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
775 retry_long = nla_get_u8(
776 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
777 if (retry_long == 0) {
778 result = -EINVAL;
779 goto bad_res;
780 }
781 changed |= WIPHY_PARAM_RETRY_LONG;
782 }
783
784 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
785 frag_threshold = nla_get_u32(
786 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
787 if (frag_threshold < 256) {
788 result = -EINVAL;
789 goto bad_res;
790 }
791 if (frag_threshold != (u32) -1) {
792 /*
793 * Fragments (apart from the last one) are required to
794 * have even length. Make the fragmentation code
795 * simpler by stripping LSB should someone try to use
796 * odd threshold value.
797 */
798 frag_threshold &= ~0x1;
799 }
800 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
801 }
802
803 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
804 rts_threshold = nla_get_u32(
805 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
806 changed |= WIPHY_PARAM_RTS_THRESHOLD;
807 }
808
809 if (changed) {
810 u8 old_retry_short, old_retry_long;
811 u32 old_frag_threshold, old_rts_threshold;
812
813 if (!rdev->ops->set_wiphy_params) {
814 result = -EOPNOTSUPP;
815 goto bad_res;
816 }
817
818 old_retry_short = rdev->wiphy.retry_short;
819 old_retry_long = rdev->wiphy.retry_long;
820 old_frag_threshold = rdev->wiphy.frag_threshold;
821 old_rts_threshold = rdev->wiphy.rts_threshold;
822
823 if (changed & WIPHY_PARAM_RETRY_SHORT)
824 rdev->wiphy.retry_short = retry_short;
825 if (changed & WIPHY_PARAM_RETRY_LONG)
826 rdev->wiphy.retry_long = retry_long;
827 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
828 rdev->wiphy.frag_threshold = frag_threshold;
829 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
830 rdev->wiphy.rts_threshold = rts_threshold;
831
832 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
833 if (result) {
834 rdev->wiphy.retry_short = old_retry_short;
835 rdev->wiphy.retry_long = old_retry_long;
836 rdev->wiphy.frag_threshold = old_frag_threshold;
837 rdev->wiphy.rts_threshold = old_rts_threshold;
838 }
839 }
72bdcf34 840
306d6112 841 bad_res:
4bbf4d56
JB		 842 mutex_unlock(&rdev->mtx);
843 unlock:
844 rtnl_unlock();
55682965
JB		 845 return result;
846}
847
848
849static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
d726405a 850 struct cfg80211_registered_device *rdev,
55682965
JB		 851 struct net_device *dev)
852{
853 void *hdr;
854
855 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
856 if (!hdr)
857 return -1;
858
859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
d726405a 860 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
55682965 861 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
60719ffd 862 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
55682965
JB		 863 return genlmsg_end(msg, hdr);
864
865 nla_put_failure:
bc3ed28c
TG		 866 genlmsg_cancel(msg, hdr);
867 return -EMSGSIZE;
55682965
JB		 868}
869
870static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
871{
872 int wp_idx = 0;
873 int if_idx = 0;
874 int wp_start = cb->args[0];
875 int if_start = cb->args[1];
876 struct cfg80211_registered_device *dev;
877 struct wireless_dev *wdev;
878
a1794390 879 mutex_lock(&cfg80211_mutex);
79c97e97 880 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
463d0183
JB		 881 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
882 continue;
bba95fef
JB		 883 if (wp_idx < wp_start) {
884 wp_idx++;
55682965 885 continue;
bba95fef 886 }
55682965
JB		 887 if_idx = 0;
888
889 mutex_lock(&dev->devlist_mtx);
890 list_for_each_entry(wdev, &dev->netdev_list, list) {
bba95fef
JB		 891 if (if_idx < if_start) {
892 if_idx++;
55682965 893 continue;
bba95fef 894 }
55682965
JB		 895 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
896 cb->nlh->nlmsg_seq, NLM_F_MULTI,
d726405a 897 dev, wdev->netdev) < 0) {
bba95fef
JB		 898 mutex_unlock(&dev->devlist_mtx);
899 goto out;
900 }
901 if_idx++;
55682965
JB		 902 }
903 mutex_unlock(&dev->devlist_mtx);
bba95fef
JB		 904
905 wp_idx++;
55682965 906 }
bba95fef 907 out:
a1794390 908 mutex_unlock(&cfg80211_mutex);
55682965
JB		 909
910 cb->args[0] = wp_idx;
911 cb->args[1] = if_idx;
912
913 return skb->len;
914}
915
916static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
917{
918 struct sk_buff *msg;
919 struct cfg80211_registered_device *dev;
920 struct net_device *netdev;
921 int err;
922
463d0183 923 err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev);
55682965
JB		 924 if (err)
925 return err;
926
fd2120ca 927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
55682965
JB		 928 if (!msg)
929 goto out_err;
930
d726405a
JB		 931 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
932 dev, netdev) < 0)
55682965
JB		 933 goto out_free;
934
935 dev_put(netdev);
4d0c8aea 936 cfg80211_unlock_rdev(dev);
55682965 937
134e6375 938 return genlmsg_reply(msg, info);
55682965
JB		 939
940 out_free:
941 nlmsg_free(msg);
942 out_err:
943 dev_put(netdev);
4d0c8aea 944 cfg80211_unlock_rdev(dev);
55682965
JB		 945 return -ENOBUFS;
946}
947
66f7ac50
MW		 948static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
949 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
950 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
951 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
952 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
953 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
954};
955
956static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
957{
958 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
959 int flag;
960
961 *mntrflags = 0;
962
963 if (!nla)
964 return -EINVAL;
965
966 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
967 nla, mntr_flags_policy))
968 return -EINVAL;
969
970 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
971 if (flags[flag])
972 *mntrflags |= (1<<flag);
973
974 return 0;
975}
976
55682965
JB		 977static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
978{
79c97e97 979 struct cfg80211_registered_device *rdev;
2ec600d6 980 struct vif_params params;
e36d56b6 981 int err;
04a773ad 982 enum nl80211_iftype otype, ntype;
55682965 983 struct net_device *dev;
92ffe055 984 u32 _flags, *flags = NULL;
ac7f9cfa 985 bool change = false;
55682965 986
2ec600d6
LCC		 987 memset(&params, 0, sizeof(params));
988
3b85875a
JB		 989 rtnl_lock();
990
463d0183 991 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
55682965 992 if (err)
3b85875a
JB		 993 goto unlock_rtnl;
994
04a773ad 995 otype = ntype = dev->ieee80211_ptr->iftype;
55682965 996
723b038d 997 if (info->attrs[NL80211_ATTR_IFTYPE]) {
ac7f9cfa 998 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
04a773ad 999 if (otype != ntype)
ac7f9cfa 1000 change = true;
04a773ad 1001 if (ntype > NL80211_IFTYPE_MAX) {
ac7f9cfa 1002 err = -EINVAL;
723b038d 1003 goto unlock;
ac7f9cfa 1004 }
723b038d
JB		 1005 }
1006
79c97e97
JB		 1007 if (!rdev->ops->change_virtual_intf ||
1008 !(rdev->wiphy.interface_modes & (1 << ntype))) {
55682965
JB		 1009 err = -EOPNOTSUPP;
1010 goto unlock;
1011 }
1012
92ffe055 1013 if (info->attrs[NL80211_ATTR_MESH_ID]) {
04a773ad 1014 if (ntype != NL80211_IFTYPE_MESH_POINT) {
92ffe055
JB		 1015 err = -EINVAL;
1016 goto unlock;
1017 }
2ec600d6
LCC		 1018 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1019 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
ac7f9cfa 1020 change = true;
2ec600d6
LCC		 1021 }
1022
92ffe055 1023 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
04a773ad 1024 if (ntype != NL80211_IFTYPE_MONITOR) {
92ffe055
JB		 1025 err = -EINVAL;
1026 goto unlock;
1027 }
1028 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1029 &_flags);
ac7f9cfa
JB		 1030 if (err)
1031 goto unlock;
1032
1033 flags = &_flags;
1034 change = true;
92ffe055 1035 }
3b85875a 1036
ac7f9cfa 1037 if (change)
79c97e97 1038 err = rdev->ops->change_virtual_intf(&rdev->wiphy, dev,
04a773ad 1039 ntype, flags, &params);
ac7f9cfa
JB		 1040 else
1041 err = 0;
60719ffd 1042
e36d56b6 1043 WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype);
04a773ad 1044
e36d56b6 1045 if (!err && (ntype != otype)) {
04a773ad 1046 if (otype == NL80211_IFTYPE_ADHOC)
9d308429 1047 cfg80211_clear_ibss(dev, false);
04a773ad 1048 }
60719ffd 1049
55682965 1050 unlock:
e36d56b6 1051 dev_put(dev);
79c97e97 1052 cfg80211_unlock_rdev(rdev);
3b85875a
JB		 1053 unlock_rtnl:
1054 rtnl_unlock();
55682965
JB		 1055 return err;
1056}
1057
1058static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1059{
79c97e97 1060 struct cfg80211_registered_device *rdev;
2ec600d6 1061 struct vif_params params;
55682965
JB		 1062 int err;
1063 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
66f7ac50 1064 u32 flags;
55682965 1065
2ec600d6
LCC		 1066 memset(&params, 0, sizeof(params));
1067
55682965
JB		 1068 if (!info->attrs[NL80211_ATTR_IFNAME])
1069 return -EINVAL;
1070
1071 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1072 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1073 if (type > NL80211_IFTYPE_MAX)
1074 return -EINVAL;
1075 }
1076
3b85875a
JB		 1077 rtnl_lock();
1078
79c97e97
JB		 1079 rdev = cfg80211_get_dev_from_info(info);
1080 if (IS_ERR(rdev)) {
1081 err = PTR_ERR(rdev);
3b85875a
JB		 1082 goto unlock_rtnl;
1083 }
55682965 1084
79c97e97
JB		 1085 if (!rdev->ops->add_virtual_intf ||
1086 !(rdev->wiphy.interface_modes & (1 << type))) {
55682965
JB		 1087 err = -EOPNOTSUPP;
1088 goto unlock;
1089 }
1090
2ec600d6
LCC		 1091 if (type == NL80211_IFTYPE_MESH_POINT &&
1092 info->attrs[NL80211_ATTR_MESH_ID]) {
1093 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1094 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1095 }
1096
66f7ac50
MW		 1097 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1098 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1099 &flags);
79c97e97 1100 err = rdev->ops->add_virtual_intf(&rdev->wiphy,
66f7ac50 1101 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2ec600d6 1102 type, err ? NULL : &flags, &params);
2ec600d6 1103
55682965 1104 unlock:
79c97e97 1105 cfg80211_unlock_rdev(rdev);
3b85875a
JB		 1106 unlock_rtnl:
1107 rtnl_unlock();
55682965
JB		 1108 return err;
1109}
1110
1111static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1112{
79c97e97 1113 struct cfg80211_registered_device *rdev;
463d0183 1114 int err;
55682965
JB		 1115 struct net_device *dev;
1116
3b85875a
JB		 1117 rtnl_lock();
1118
463d0183 1119 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
55682965 1120 if (err)
3b85875a 1121 goto unlock_rtnl;
55682965 1122
79c97e97 1123 if (!rdev->ops->del_virtual_intf) {
55682965
JB		 1124 err = -EOPNOTSUPP;
1125 goto out;
1126 }
1127
463d0183 1128 err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
55682965
JB		 1129
1130 out:
79c97e97 1131 cfg80211_unlock_rdev(rdev);
463d0183 1132 dev_put(dev);
3b85875a
JB		 1133 unlock_rtnl:
1134 rtnl_unlock();
55682965
JB		 1135 return err;
1136}
1137
41ade00f
JB		 1138struct get_key_cookie {
1139 struct sk_buff *msg;
1140 int error;
b9454e83 1141 int idx;
41ade00f
JB		 1142};
1143
1144static void get_key_callback(void *c, struct key_params *params)
1145{
b9454e83 1146 struct nlattr *key;
41ade00f
JB		 1147 struct get_key_cookie *cookie = c;
1148
1149 if (params->key)
1150 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1151 params->key_len, params->key);
1152
1153 if (params->seq)
1154 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1155 params->seq_len, params->seq);
1156
1157 if (params->cipher)
1158 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1159 params->cipher);
1160
b9454e83
JB		 1161 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1162 if (!key)
1163 goto nla_put_failure;
1164
1165 if (params->key)
1166 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1167 params->key_len, params->key);
1168
1169 if (params->seq)
1170 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1171 params->seq_len, params->seq);
1172
1173 if (params->cipher)
1174 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1175 params->cipher);
1176
1177 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1178
1179 nla_nest_end(cookie->msg, key);
1180
41ade00f
JB		 1181 return;
1182 nla_put_failure:
1183 cookie->error = 1;
1184}
1185
1186static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1187{
79c97e97 1188 struct cfg80211_registered_device *rdev;
41ade00f
JB		 1189 int err;
1190 struct net_device *dev;
1191 u8 key_idx = 0;
1192 u8 *mac_addr = NULL;
1193 struct get_key_cookie cookie = {
1194 .error = 0,
1195 };
1196 void *hdr;
1197 struct sk_buff *msg;
1198
1199 if (info->attrs[NL80211_ATTR_KEY_IDX])
1200 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1201
3cfcf6ac 1202 if (key_idx > 5)
41ade00f
JB		 1203 return -EINVAL;
1204
1205 if (info->attrs[NL80211_ATTR_MAC])
1206 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1207
3b85875a
JB		 1208 rtnl_lock();
1209
463d0183 1210 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
41ade00f 1211 if (err)
3b85875a 1212 goto unlock_rtnl;
41ade00f 1213
79c97e97 1214 if (!rdev->ops->get_key) {
41ade00f
JB		 1215 err = -EOPNOTSUPP;
1216 goto out;
1217 }
1218
fd2120ca 1219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
41ade00f
JB		 1220 if (!msg) {
1221 err = -ENOMEM;
1222 goto out;
1223 }
1224
1225 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1226 NL80211_CMD_NEW_KEY);
1227
1228 if (IS_ERR(hdr)) {
1229 err = PTR_ERR(hdr);
6c95e2a2 1230 goto free_msg;
41ade00f
JB		 1231 }
1232
1233 cookie.msg = msg;
b9454e83 1234 cookie.idx = key_idx;
41ade00f
JB		 1235
1236 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1237 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1238 if (mac_addr)
1239 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1240
79c97e97 1241 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, mac_addr,
41ade00f 1242 &cookie, get_key_callback);
41ade00f
JB		 1243
1244 if (err)
6c95e2a2 1245 goto free_msg;
41ade00f
JB		 1246
1247 if (cookie.error)
1248 goto nla_put_failure;
1249
1250 genlmsg_end(msg, hdr);
134e6375 1251 err = genlmsg_reply(msg, info);
41ade00f
JB		 1252 goto out;
1253
1254 nla_put_failure:
1255 err = -ENOBUFS;
6c95e2a2 1256 free_msg:
41ade00f
JB		 1257 nlmsg_free(msg);
1258 out:
79c97e97 1259 cfg80211_unlock_rdev(rdev);
41ade00f 1260 dev_put(dev);
3b85875a
JB		 1261 unlock_rtnl:
1262 rtnl_unlock();
1263
41ade00f
JB		 1264 return err;
1265}
1266
1267static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1268{
79c97e97 1269 struct cfg80211_registered_device *rdev;
b9454e83 1270 struct key_parse key;
41ade00f
JB		 1271 int err;
1272 struct net_device *dev;
3cfcf6ac
JM		 1273 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1274 u8 key_index);
41ade00f 1275
b9454e83
JB		 1276 err = nl80211_parse_key(info, &key);
1277 if (err)
1278 return err;
41ade00f 1279
b9454e83 1280 if (key.idx < 0)
41ade00f
JB		 1281 return -EINVAL;
1282
b9454e83
JB		 1283 /* only support setting default key */
1284 if (!key.def && !key.defmgmt)
41ade00f
JB		 1285 return -EINVAL;
1286
3b85875a
JB		 1287 rtnl_lock();
1288
463d0183 1289 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
41ade00f 1290 if (err)
3b85875a 1291 goto unlock_rtnl;
41ade00f 1292
b9454e83 1293 if (key.def)
79c97e97 1294 func = rdev->ops->set_default_key;
3cfcf6ac 1295 else
79c97e97 1296 func = rdev->ops->set_default_mgmt_key;
3cfcf6ac
JM		 1297
1298 if (!func) {
41ade00f
JB		 1299 err = -EOPNOTSUPP;
1300 goto out;
1301 }
1302
fffd0934
JB		 1303 wdev_lock(dev->ieee80211_ptr);
1304 err = nl80211_key_allowed(dev->ieee80211_ptr);
1305 if (!err)
1306 err = func(&rdev->wiphy, dev, key.idx);
1307
08645126
JB		 1308#ifdef CONFIG_WIRELESS_EXT
1309 if (!err) {
79c97e97 1310 if (func == rdev->ops->set_default_key)
b9454e83 1311 dev->ieee80211_ptr->wext.default_key = key.idx;
08645126 1312 else
b9454e83 1313 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
08645126
JB		 1314 }
1315#endif
fffd0934 1316 wdev_unlock(dev->ieee80211_ptr);
41ade00f
JB		 1317
1318 out:
79c97e97 1319 cfg80211_unlock_rdev(rdev);
41ade00f 1320 dev_put(dev);
3b85875a
JB		 1321
1322 unlock_rtnl:
1323 rtnl_unlock();
1324
41ade00f
JB		 1325 return err;
1326}
1327
1328static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1329{
79c97e97 1330 struct cfg80211_registered_device *rdev;
fffd0934 1331 int err;
41ade00f 1332 struct net_device *dev;
b9454e83 1333 struct key_parse key;
41ade00f
JB		 1334 u8 *mac_addr = NULL;
1335
b9454e83
JB		 1336 err = nl80211_parse_key(info, &key);
1337 if (err)
1338 return err;
41ade00f 1339
b9454e83 1340 if (!key.p.key)
41ade00f
JB		 1341 return -EINVAL;
1342
41ade00f
JB		 1343 if (info->attrs[NL80211_ATTR_MAC])
1344 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1345
3b85875a
JB		 1346 rtnl_lock();
1347
463d0183 1348 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
41ade00f 1349 if (err)
3b85875a 1350 goto unlock_rtnl;
41ade00f 1351
fffd0934
JB		 1352 if (!rdev->ops->add_key) {
1353 err = -EOPNOTSUPP;
25e47c18
JB		 1354 goto out;
1355 }
1356
fffd0934
JB		 1357 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) {
1358 err = -EINVAL;
41ade00f
JB		 1359 goto out;
1360 }
1361
fffd0934
JB		 1362 wdev_lock(dev->ieee80211_ptr);
1363 err = nl80211_key_allowed(dev->ieee80211_ptr);
1364 if (!err)
1365 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1366 mac_addr, &key.p);
1367 wdev_unlock(dev->ieee80211_ptr);
41ade00f
JB		 1368
1369 out:
79c97e97 1370 cfg80211_unlock_rdev(rdev);
41ade00f 1371 dev_put(dev);
3b85875a
JB		 1372 unlock_rtnl:
1373 rtnl_unlock();
1374
41ade00f
JB		 1375 return err;
1376}
1377
1378static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1379{
79c97e97 1380 struct cfg80211_registered_device *rdev;
41ade00f
JB		 1381 int err;
1382 struct net_device *dev;
41ade00f 1383 u8 *mac_addr = NULL;
b9454e83 1384 struct key_parse key;
41ade00f 1385
b9454e83
JB		 1386 err = nl80211_parse_key(info, &key);
1387 if (err)
1388 return err;
41ade00f
JB		 1389
1390 if (info->attrs[NL80211_ATTR_MAC])
1391 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1392
3b85875a
JB		 1393 rtnl_lock();
1394
463d0183 1395 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
41ade00f 1396 if (err)
3b85875a 1397 goto unlock_rtnl;
41ade00f 1398
79c97e97 1399 if (!rdev->ops->del_key) {
41ade00f
JB		 1400 err = -EOPNOTSUPP;
1401 goto out;
1402 }
1403
fffd0934
JB		 1404 wdev_lock(dev->ieee80211_ptr);
1405 err = nl80211_key_allowed(dev->ieee80211_ptr);
1406 if (!err)
1407 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, mac_addr);
41ade00f 1408
08645126
JB		 1409#ifdef CONFIG_WIRELESS_EXT
1410 if (!err) {
b9454e83 1411 if (key.idx == dev->ieee80211_ptr->wext.default_key)
08645126 1412 dev->ieee80211_ptr->wext.default_key = -1;
b9454e83 1413 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
08645126
JB		 1414 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1415 }
1416#endif
fffd0934 1417 wdev_unlock(dev->ieee80211_ptr);
08645126 1418
41ade00f 1419 out:
79c97e97 1420 cfg80211_unlock_rdev(rdev);
41ade00f 1421 dev_put(dev);
3b85875a
JB		 1422
1423 unlock_rtnl:
1424 rtnl_unlock();
1425
41ade00f
JB		 1426 return err;
1427}
1428
ed1b6cc7
JB		 1429static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1430{
1431 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1432 struct beacon_parameters *info);
79c97e97 1433 struct cfg80211_registered_device *rdev;
ed1b6cc7
JB		 1434 int err;
1435 struct net_device *dev;
1436 struct beacon_parameters params;
1437 int haveinfo = 0;
1438
f4a11bb0
JB		 1439 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1440 return -EINVAL;
1441
3b85875a
JB		 1442 rtnl_lock();
1443
463d0183 1444 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
ed1b6cc7 1445 if (err)
3b85875a 1446 goto unlock_rtnl;
ed1b6cc7 1447
eec60b03
JM		 1448 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1449 err = -EOPNOTSUPP;
1450 goto out;
1451 }
1452
ed1b6cc7
JB		 1453 switch (info->genlhdr->cmd) {
1454 case NL80211_CMD_NEW_BEACON:
1455 /* these are required for NEW_BEACON */
1456 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1457 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1458 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1459 err = -EINVAL;
1460 goto out;
1461 }
1462
79c97e97 1463 call = rdev->ops->add_beacon;
ed1b6cc7
JB		 1464 break;
1465 case NL80211_CMD_SET_BEACON:
79c97e97 1466 call = rdev->ops->set_beacon;
ed1b6cc7
JB		 1467 break;
1468 default:
1469 WARN_ON(1);
1470 err = -EOPNOTSUPP;
1471 goto out;
1472 }
1473
1474 if (!call) {
1475 err = -EOPNOTSUPP;
1476 goto out;
1477 }
1478
1479 memset(&params, 0, sizeof(params));
1480
1481 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1482 params.interval =
1483 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1484 haveinfo = 1;
1485 }
1486
1487 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1488 params.dtim_period =
1489 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1490 haveinfo = 1;
1491 }
1492
1493 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1494 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1495 params.head_len =
1496 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1497 haveinfo = 1;
1498 }
1499
1500 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1501 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1502 params.tail_len =
1503 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1504 haveinfo = 1;
1505 }
1506
1507 if (!haveinfo) {
1508 err = -EINVAL;
1509 goto out;
1510 }
1511
79c97e97 1512 err = call(&rdev->wiphy, dev, &params);
ed1b6cc7
JB		 1513
1514 out:
79c97e97 1515 cfg80211_unlock_rdev(rdev);
ed1b6cc7 1516 dev_put(dev);
3b85875a
JB		 1517 unlock_rtnl:
1518 rtnl_unlock();
1519
ed1b6cc7
JB		 1520 return err;
1521}
1522
1523static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1524{
79c97e97 1525 struct cfg80211_registered_device *rdev;
ed1b6cc7
JB		 1526 int err;
1527 struct net_device *dev;
1528
3b85875a
JB		 1529 rtnl_lock();
1530
463d0183 1531 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
ed1b6cc7 1532 if (err)
3b85875a 1533 goto unlock_rtnl;
ed1b6cc7 1534
79c97e97 1535 if (!rdev->ops->del_beacon) {
ed1b6cc7
JB		 1536 err = -EOPNOTSUPP;
1537 goto out;
1538 }
1539
eec60b03
JM		 1540 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1541 err = -EOPNOTSUPP;
1542 goto out;
1543 }
79c97e97 1544 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
ed1b6cc7
JB		 1545
1546 out:
79c97e97 1547 cfg80211_unlock_rdev(rdev);
ed1b6cc7 1548 dev_put(dev);
3b85875a
JB		 1549 unlock_rtnl:
1550 rtnl_unlock();
1551
ed1b6cc7
JB		 1552 return err;
1553}
1554
5727ef1b
JB		 1555static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1556 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1557 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1558 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
0e46724a 1559 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5727ef1b
JB		 1560};
1561
eccb8e8f
JB		 1562static int parse_station_flags(struct genl_info *info,
1563 struct station_parameters *params)
5727ef1b
JB		 1564{
1565 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
eccb8e8f 1566 struct nlattr *nla;
5727ef1b
JB		 1567 int flag;
1568
eccb8e8f
JB		 1569 /*
1570 * Try parsing the new attribute first so userspace
1571 * can specify both for older kernels.
1572 */
1573 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1574 if (nla) {
1575 struct nl80211_sta_flag_update *sta_flags;
1576
1577 sta_flags = nla_data(nla);
1578 params->sta_flags_mask = sta_flags->mask;
1579 params->sta_flags_set = sta_flags->set;
1580 if ((params->sta_flags_mask |
1581 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1582 return -EINVAL;
1583 return 0;
1584 }
1585
1586 /* if present, parse the old attribute */
5727ef1b 1587
eccb8e8f 1588 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5727ef1b
JB		 1589 if (!nla)
1590 return 0;
1591
1592 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1593 nla, sta_flags_policy))
1594 return -EINVAL;
1595
eccb8e8f
JB		 1596 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1597 params->sta_flags_mask &= ~1;
5727ef1b
JB		 1598
1599 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1600 if (flags[flag])
eccb8e8f 1601 params->sta_flags_set |= (1<<flag);
5727ef1b
JB		 1602
1603 return 0;
1604}
1605
420e7fab
HR		 1606static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1607{
1608 int modulation, streams, bitrate;
1609
1610 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1611 return rate->legacy;
1612
1613 /* the formula below does only work for MCS values smaller than 32 */
1614 if (rate->mcs >= 32)
1615 return 0;
1616
1617 modulation = rate->mcs & 7;
1618 streams = (rate->mcs >> 3) + 1;
1619
1620 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1621 13500000 : 6500000;
1622
1623 if (modulation < 4)
1624 bitrate *= (modulation + 1);
1625 else if (modulation == 4)
1626 bitrate *= (modulation + 2);
1627 else
1628 bitrate *= (modulation + 3);
1629
1630 bitrate *= streams;
1631
1632 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1633 bitrate = (bitrate / 9) * 10;
1634
1635 /* do NOT round down here */
1636 return (bitrate + 50000) / 100000;
1637}
1638
fd5b74dc
JB		 1639static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1640 int flags, struct net_device *dev,
2ec600d6 1641 u8 *mac_addr, struct station_info *sinfo)
fd5b74dc
JB		 1642{
1643 void *hdr;
420e7fab
HR		 1644 struct nlattr *sinfoattr, *txrate;
1645 u16 bitrate;
fd5b74dc
JB		 1646
1647 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1648 if (!hdr)
1649 return -1;
1650
1651 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1652 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1653
2ec600d6
LCC		 1654 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1655 if (!sinfoattr)
fd5b74dc 1656 goto nla_put_failure;
2ec600d6
LCC		 1657 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1658 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1659 sinfo->inactive_time);
1660 if (sinfo->filled & STATION_INFO_RX_BYTES)
1661 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1662 sinfo->rx_bytes);
1663 if (sinfo->filled & STATION_INFO_TX_BYTES)
1664 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1665 sinfo->tx_bytes);
1666 if (sinfo->filled & STATION_INFO_LLID)
1667 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1668 sinfo->llid);
1669 if (sinfo->filled & STATION_INFO_PLID)
1670 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1671 sinfo->plid);
1672 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1673 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1674 sinfo->plink_state);
420e7fab
HR		 1675 if (sinfo->filled & STATION_INFO_SIGNAL)
1676 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1677 sinfo->signal);
1678 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1679 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1680 if (!txrate)
1681 goto nla_put_failure;
1682
1683 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1684 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1685 if (bitrate > 0)
1686 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2ec600d6 1687
420e7fab
HR		 1688 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1689 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1690 sinfo->txrate.mcs);
1691 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1692 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1693 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1694 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1695
1696 nla_nest_end(msg, txrate);
1697 }
98c8a60a
JM		 1698 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1699 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1700 sinfo->rx_packets);
1701 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1702 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1703 sinfo->tx_packets);
2ec600d6 1704 nla_nest_end(msg, sinfoattr);
fd5b74dc
JB		 1705
1706 return genlmsg_end(msg, hdr);
1707
1708 nla_put_failure:
bc3ed28c
TG		 1709 genlmsg_cancel(msg, hdr);
1710 return -EMSGSIZE;
fd5b74dc
JB		 1711}
1712
2ec600d6 1713static int nl80211_dump_station(struct sk_buff *skb,
bba95fef 1714 struct netlink_callback *cb)
2ec600d6 1715{
2ec600d6
LCC		 1716 struct station_info sinfo;
1717 struct cfg80211_registered_device *dev;
bba95fef 1718 struct net_device *netdev;
2ec600d6 1719 u8 mac_addr[ETH_ALEN];
bba95fef
JB		 1720 int ifidx = cb->args[0];
1721 int sta_idx = cb->args[1];
2ec600d6 1722 int err;
2ec600d6 1723
bba95fef
JB		 1724 if (!ifidx) {
1725 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1726 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1727 nl80211_policy);
1728 if (err)
1729 return err;
2ec600d6 1730
bba95fef
JB		 1731 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1732 return -EINVAL;
2ec600d6 1733
bba95fef
JB		 1734 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1735 if (!ifidx)
1736 return -EINVAL;
2ec600d6 1737 }
2ec600d6 1738
3b85875a
JB		 1739 rtnl_lock();
1740
463d0183 1741 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3b85875a
JB		 1742 if (!netdev) {
1743 err = -ENODEV;
1744 goto out_rtnl;
1745 }
2ec600d6 1746
463d0183 1747 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
bba95fef
JB		 1748 if (IS_ERR(dev)) {
1749 err = PTR_ERR(dev);
3b85875a 1750 goto out_rtnl;
bba95fef
JB		 1751 }
1752
1753 if (!dev->ops->dump_station) {
eec60b03 1754 err = -EOPNOTSUPP;
bba95fef
JB		 1755 goto out_err;
1756 }
1757
bba95fef
JB		 1758 while (1) {
1759 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1760 mac_addr, &sinfo);
1761 if (err == -ENOENT)
1762 break;
1763 if (err)
3b85875a 1764 goto out_err;
bba95fef
JB		 1765
1766 if (nl80211_send_station(skb,
1767 NETLINK_CB(cb->skb).pid,
1768 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1769 netdev, mac_addr,
1770 &sinfo) < 0)
1771 goto out;
1772
1773 sta_idx++;
1774 }
1775
1776
1777 out:
1778 cb->args[1] = sta_idx;
1779 err = skb->len;
bba95fef 1780 out_err:
4d0c8aea 1781 cfg80211_unlock_rdev(dev);
3b85875a
JB		 1782 out_rtnl:
1783 rtnl_unlock();
bba95fef
JB		 1784
1785 return err;
2ec600d6 1786}
fd5b74dc 1787
5727ef1b
JB		 1788static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1789{
79c97e97 1790 struct cfg80211_registered_device *rdev;
fd5b74dc
JB		 1791 int err;
1792 struct net_device *dev;
2ec600d6 1793 struct station_info sinfo;
fd5b74dc
JB		 1794 struct sk_buff *msg;
1795 u8 *mac_addr = NULL;
1796
2ec600d6 1797 memset(&sinfo, 0, sizeof(sinfo));
fd5b74dc
JB		 1798
1799 if (!info->attrs[NL80211_ATTR_MAC])
1800 return -EINVAL;
1801
1802 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1803
3b85875a
JB		 1804 rtnl_lock();
1805
463d0183 1806 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
fd5b74dc 1807 if (err)
3b85875a 1808 goto out_rtnl;
fd5b74dc 1809
79c97e97 1810 if (!rdev->ops->get_station) {
fd5b74dc
JB		 1811 err = -EOPNOTSUPP;
1812 goto out;
1813 }
1814
79c97e97 1815 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2ec600d6
LCC		 1816 if (err)
1817 goto out;
1818
fd2120ca 1819 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
fd5b74dc
JB		 1820 if (!msg)
1821 goto out;
1822
1823 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2ec600d6 1824 dev, mac_addr, &sinfo) < 0)
fd5b74dc
JB		 1825 goto out_free;
1826
134e6375 1827 err = genlmsg_reply(msg, info);
fd5b74dc
JB		 1828 goto out;
1829
1830 out_free:
1831 nlmsg_free(msg);
fd5b74dc 1832 out:
79c97e97 1833 cfg80211_unlock_rdev(rdev);
fd5b74dc 1834 dev_put(dev);
3b85875a
JB		 1835 out_rtnl:
1836 rtnl_unlock();
1837
fd5b74dc 1838 return err;
5727ef1b
JB		 1839}
1840
1841/*
1842 * Get vlan interface making sure it is on the right wiphy.
1843 */
463d0183 1844static int get_vlan(struct genl_info *info,
5727ef1b
JB		 1845 struct cfg80211_registered_device *rdev,
1846 struct net_device **vlan)
1847{
463d0183 1848 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5727ef1b
JB		 1849 *vlan = NULL;
1850
1851 if (vlanattr) {
463d0183
JB		 1852 *vlan = dev_get_by_index(genl_info_net(info),
1853 nla_get_u32(vlanattr));
5727ef1b
JB		 1854 if (!*vlan)
1855 return -ENODEV;
1856 if (!(*vlan)->ieee80211_ptr)
1857 return -EINVAL;
1858 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1859 return -EINVAL;
1860 }
1861 return 0;
1862}
1863
1864static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1865{
79c97e97 1866 struct cfg80211_registered_device *rdev;
5727ef1b
JB		 1867 int err;
1868 struct net_device *dev;
1869 struct station_parameters params;
1870 u8 *mac_addr = NULL;
1871
1872 memset(&params, 0, sizeof(params));
1873
1874 params.listen_interval = -1;
1875
1876 if (info->attrs[NL80211_ATTR_STA_AID])
1877 return -EINVAL;
1878
1879 if (!info->attrs[NL80211_ATTR_MAC])
1880 return -EINVAL;
1881
1882 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1883
1884 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1885 params.supported_rates =
1886 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1887 params.supported_rates_len =
1888 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1889 }
1890
1891 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1892 params.listen_interval =
1893 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1894
36aedc90
JM		 1895 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1896 params.ht_capa =
1897 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1898
eccb8e8f 1899 if (parse_station_flags(info, &params))
5727ef1b
JB		 1900 return -EINVAL;
1901
2ec600d6
LCC		 1902 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1903 params.plink_action =
1904 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1905
3b85875a
JB		 1906 rtnl_lock();
1907
463d0183 1908 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5727ef1b 1909 if (err)
3b85875a 1910 goto out_rtnl;
5727ef1b 1911
463d0183 1912 err = get_vlan(info, rdev, &params.vlan);
a97f4424 1913 if (err)
034d655e 1914 goto out;
a97f4424
JB		 1915
1916 /* validate settings */
1917 err = 0;
1918
1919 switch (dev->ieee80211_ptr->iftype) {
1920 case NL80211_IFTYPE_AP:
1921 case NL80211_IFTYPE_AP_VLAN:
1922 /* disallow mesh-specific things */
1923 if (params.plink_action)
1924 err = -EINVAL;
1925 break;
1926 case NL80211_IFTYPE_STATION:
1927 /* disallow everything but AUTHORIZED flag */
1928 if (params.plink_action)
1929 err = -EINVAL;
1930 if (params.vlan)
1931 err = -EINVAL;
1932 if (params.supported_rates)
1933 err = -EINVAL;
1934 if (params.ht_capa)
1935 err = -EINVAL;
1936 if (params.listen_interval >= 0)
1937 err = -EINVAL;
1938 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
1939 err = -EINVAL;
1940 break;
1941 case NL80211_IFTYPE_MESH_POINT:
1942 /* disallow things mesh doesn't support */
1943 if (params.vlan)
1944 err = -EINVAL;
1945 if (params.ht_capa)
1946 err = -EINVAL;
1947 if (params.listen_interval >= 0)
1948 err = -EINVAL;
1949 if (params.supported_rates)
1950 err = -EINVAL;
1951 if (params.sta_flags_mask)
1952 err = -EINVAL;
1953 break;
1954 default:
1955 err = -EINVAL;
034d655e
JB		 1956 }
1957
5727ef1b
JB		 1958 if (err)
1959 goto out;
1960
79c97e97 1961 if (!rdev->ops->change_station) {
5727ef1b
JB		 1962 err = -EOPNOTSUPP;
1963 goto out;
1964 }
1965
79c97e97 1966 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
5727ef1b
JB		 1967
1968 out:
1969 if (params.vlan)
1970 dev_put(params.vlan);
79c97e97 1971 cfg80211_unlock_rdev(rdev);
5727ef1b 1972 dev_put(dev);
3b85875a
JB		 1973 out_rtnl:
1974 rtnl_unlock();
1975
5727ef1b
JB		 1976 return err;
1977}
1978
1979static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1980{
79c97e97 1981 struct cfg80211_registered_device *rdev;
5727ef1b
JB		 1982 int err;
1983 struct net_device *dev;
1984 struct station_parameters params;
1985 u8 *mac_addr = NULL;
1986
1987 memset(&params, 0, sizeof(params));
1988
1989 if (!info->attrs[NL80211_ATTR_MAC])
1990 return -EINVAL;
1991
5727ef1b
JB		 1992 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1993 return -EINVAL;
1994
1995 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1996 return -EINVAL;
1997
1998 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1999 params.supported_rates =
2000 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2001 params.supported_rates_len =
2002 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2003 params.listen_interval =
2004 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
51b50fbe 2005
a97f4424
JB		 2006 if (info->attrs[NL80211_ATTR_STA_AID]) {
2007 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2008 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2009 return -EINVAL;
2010 }
51b50fbe 2011
36aedc90
JM		 2012 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2013 params.ht_capa =
2014 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5727ef1b 2015
eccb8e8f 2016 if (parse_station_flags(info, &params))
5727ef1b
JB		 2017 return -EINVAL;
2018
3b85875a
JB		 2019 rtnl_lock();
2020
463d0183 2021 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5727ef1b 2022 if (err)
3b85875a 2023 goto out_rtnl;
5727ef1b 2024
463d0183 2025 err = get_vlan(info, rdev, &params.vlan);
a97f4424 2026 if (err)
e80cf853 2027 goto out;
a97f4424
JB		 2028
2029 /* validate settings */
2030 err = 0;
2031
2032 switch (dev->ieee80211_ptr->iftype) {
2033 case NL80211_IFTYPE_AP:
2034 case NL80211_IFTYPE_AP_VLAN:
2035 /* all ok but must have AID */
2036 if (!params.aid)
2037 err = -EINVAL;
2038 break;
2039 case NL80211_IFTYPE_MESH_POINT:
2040 /* disallow things mesh doesn't support */
2041 if (params.vlan)
2042 err = -EINVAL;
2043 if (params.aid)
2044 err = -EINVAL;
2045 if (params.ht_capa)
2046 err = -EINVAL;
2047 if (params.listen_interval >= 0)
2048 err = -EINVAL;
2049 if (params.supported_rates)
2050 err = -EINVAL;
2051 if (params.sta_flags_mask)
2052 err = -EINVAL;
2053 break;
2054 default:
2055 err = -EINVAL;
e80cf853
JB		 2056 }
2057
5727ef1b
JB		 2058 if (err)
2059 goto out;
2060
79c97e97 2061 if (!rdev->ops->add_station) {
5727ef1b
JB		 2062 err = -EOPNOTSUPP;
2063 goto out;
2064 }
2065
35a8efe1
JM		 2066 if (!netif_running(dev)) {
2067 err = -ENETDOWN;
2068 goto out;
2069 }
2070
79c97e97 2071 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
5727ef1b
JB		 2072
2073 out:
2074 if (params.vlan)
2075 dev_put(params.vlan);
79c97e97 2076 cfg80211_unlock_rdev(rdev);
5727ef1b 2077 dev_put(dev);
3b85875a
JB		 2078 out_rtnl:
2079 rtnl_unlock();
2080
5727ef1b
JB		 2081 return err;
2082}
2083
2084static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2085{
79c97e97 2086 struct cfg80211_registered_device *rdev;
5727ef1b
JB		 2087 int err;
2088 struct net_device *dev;
2089 u8 *mac_addr = NULL;
2090
2091 if (info->attrs[NL80211_ATTR_MAC])
2092 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2093
3b85875a
JB		 2094 rtnl_lock();
2095
463d0183 2096 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5727ef1b 2097 if (err)
3b85875a 2098 goto out_rtnl;
5727ef1b 2099
e80cf853 2100 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
155cc9e4
AY		 2101 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2102 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
e80cf853
JB		 2103 err = -EINVAL;
2104 goto out;
2105 }
2106
79c97e97 2107 if (!rdev->ops->del_station) {
5727ef1b
JB		 2108 err = -EOPNOTSUPP;
2109 goto out;
2110 }
2111
79c97e97 2112 err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
5727ef1b
JB		 2113
2114 out:
79c97e97 2115 cfg80211_unlock_rdev(rdev);
5727ef1b 2116 dev_put(dev);
3b85875a
JB		 2117 out_rtnl:
2118 rtnl_unlock();
2119
5727ef1b
JB		 2120 return err;
2121}
2122
2ec600d6
LCC		 2123static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2124 int flags, struct net_device *dev,
2125 u8 *dst, u8 *next_hop,
2126 struct mpath_info *pinfo)
2127{
2128 void *hdr;
2129 struct nlattr *pinfoattr;
2130
2131 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2132 if (!hdr)
2133 return -1;
2134
2135 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2136 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2137 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2138
2139 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2140 if (!pinfoattr)
2141 goto nla_put_failure;
2142 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2143 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2144 pinfo->frame_qlen);
2145 if (pinfo->filled & MPATH_INFO_DSN)
2146 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
2147 pinfo->dsn);
2148 if (pinfo->filled & MPATH_INFO_METRIC)
2149 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2150 pinfo->metric);
2151 if (pinfo->filled & MPATH_INFO_EXPTIME)
2152 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2153 pinfo->exptime);
2154 if (pinfo->filled & MPATH_INFO_FLAGS)
2155 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2156 pinfo->flags);
2157 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2158 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2159 pinfo->discovery_timeout);
2160 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2161 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2162 pinfo->discovery_retries);
2163
2164 nla_nest_end(msg, pinfoattr);
2165
2166 return genlmsg_end(msg, hdr);
2167
2168 nla_put_failure:
bc3ed28c
TG		 2169 genlmsg_cancel(msg, hdr);
2170 return -EMSGSIZE;
2ec600d6
LCC		 2171}
2172
2173static int nl80211_dump_mpath(struct sk_buff *skb,
bba95fef 2174 struct netlink_callback *cb)
2ec600d6 2175{
2ec600d6
LCC		 2176 struct mpath_info pinfo;
2177 struct cfg80211_registered_device *dev;
bba95fef 2178 struct net_device *netdev;
2ec600d6
LCC		 2179 u8 dst[ETH_ALEN];
2180 u8 next_hop[ETH_ALEN];
bba95fef
JB		 2181 int ifidx = cb->args[0];
2182 int path_idx = cb->args[1];
2ec600d6 2183 int err;
2ec600d6 2184
bba95fef
JB		 2185 if (!ifidx) {
2186 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2187 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2188 nl80211_policy);
2189 if (err)
2190 return err;
2191
2192 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2193 return -EINVAL;
2194
2195 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2196 if (!ifidx)
2197 return -EINVAL;
2198 }
2199
3b85875a
JB		 2200 rtnl_lock();
2201
463d0183 2202 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3b85875a
JB		 2203 if (!netdev) {
2204 err = -ENODEV;
2205 goto out_rtnl;
2206 }
bba95fef 2207
463d0183 2208 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
bba95fef
JB		 2209 if (IS_ERR(dev)) {
2210 err = PTR_ERR(dev);
3b85875a 2211 goto out_rtnl;
bba95fef
JB		 2212 }
2213
2214 if (!dev->ops->dump_mpath) {
eec60b03 2215 err = -EOPNOTSUPP;
bba95fef
JB		 2216 goto out_err;
2217 }
2218
eec60b03
JM		 2219 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2220 err = -EOPNOTSUPP;
2221 goto out;
2222 }
2223
bba95fef
JB		 2224 while (1) {
2225 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2226 dst, next_hop, &pinfo);
2227 if (err == -ENOENT)
2ec600d6 2228 break;
bba95fef 2229 if (err)
3b85875a 2230 goto out_err;
2ec600d6 2231
bba95fef
JB		 2232 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2233 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2234 netdev, dst, next_hop,
2235 &pinfo) < 0)
2236 goto out;
2ec600d6 2237
bba95fef 2238 path_idx++;
2ec600d6 2239 }
2ec600d6 2240
2ec600d6 2241
bba95fef
JB		 2242 out:
2243 cb->args[1] = path_idx;
2244 err = skb->len;
bba95fef 2245 out_err:
4d0c8aea 2246 cfg80211_unlock_rdev(dev);
3b85875a
JB		 2247 out_rtnl:
2248 rtnl_unlock();
bba95fef
JB		 2249
2250 return err;
2ec600d6
LCC		 2251}
2252
2253static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2254{
79c97e97 2255 struct cfg80211_registered_device *rdev;
2ec600d6
LCC		 2256 int err;
2257 struct net_device *dev;
2258 struct mpath_info pinfo;
2259 struct sk_buff *msg;
2260 u8 *dst = NULL;
2261 u8 next_hop[ETH_ALEN];
2262
2263 memset(&pinfo, 0, sizeof(pinfo));
2264
2265 if (!info->attrs[NL80211_ATTR_MAC])
2266 return -EINVAL;
2267
2268 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2269
3b85875a
JB		 2270 rtnl_lock();
2271
463d0183 2272 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2ec600d6 2273 if (err)
3b85875a 2274 goto out_rtnl;
2ec600d6 2275
79c97e97 2276 if (!rdev->ops->get_mpath) {
2ec600d6
LCC		 2277 err = -EOPNOTSUPP;
2278 goto out;
2279 }
2280
eec60b03
JM		 2281 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2282 err = -EOPNOTSUPP;
2283 goto out;
2284 }
2285
79c97e97 2286 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2ec600d6
LCC		 2287 if (err)
2288 goto out;
2289
fd2120ca 2290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2ec600d6
LCC		 2291 if (!msg)
2292 goto out;
2293
2294 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2295 dev, dst, next_hop, &pinfo) < 0)
2296 goto out_free;
2297
134e6375 2298 err = genlmsg_reply(msg, info);
2ec600d6
LCC		 2299 goto out;
2300
2301 out_free:
2302 nlmsg_free(msg);
2ec600d6 2303 out:
79c97e97 2304 cfg80211_unlock_rdev(rdev);
2ec600d6 2305 dev_put(dev);
3b85875a
JB		 2306 out_rtnl:
2307 rtnl_unlock();
2308
2ec600d6
LCC		 2309 return err;
2310}
2311
2312static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2313{
79c97e97 2314 struct cfg80211_registered_device *rdev;
2ec600d6
LCC		 2315 int err;
2316 struct net_device *dev;
2317 u8 *dst = NULL;
2318 u8 *next_hop = NULL;
2319
2320 if (!info->attrs[NL80211_ATTR_MAC])
2321 return -EINVAL;
2322
2323 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2324 return -EINVAL;
2325
2326 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2327 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2328
3b85875a
JB		 2329 rtnl_lock();
2330
463d0183 2331 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2ec600d6 2332 if (err)
3b85875a 2333 goto out_rtnl;
2ec600d6 2334
79c97e97 2335 if (!rdev->ops->change_mpath) {
2ec600d6
LCC		 2336 err = -EOPNOTSUPP;
2337 goto out;
2338 }
2339
eec60b03
JM		 2340 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2341 err = -EOPNOTSUPP;
2342 goto out;
2343 }
2344
35a8efe1
JM		 2345 if (!netif_running(dev)) {
2346 err = -ENETDOWN;
2347 goto out;
2348 }
2349
79c97e97 2350 err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2ec600d6
LCC		 2351
2352 out:
79c97e97 2353 cfg80211_unlock_rdev(rdev);
2ec600d6 2354 dev_put(dev);
3b85875a
JB		 2355 out_rtnl:
2356 rtnl_unlock();
2357
2ec600d6
LCC		 2358 return err;
2359}
2360static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2361{
79c97e97 2362 struct cfg80211_registered_device *rdev;
2ec600d6
LCC		 2363 int err;
2364 struct net_device *dev;
2365 u8 *dst = NULL;
2366 u8 *next_hop = NULL;
2367
2368 if (!info->attrs[NL80211_ATTR_MAC])
2369 return -EINVAL;
2370
2371 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2372 return -EINVAL;
2373
2374 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2375 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2376
3b85875a
JB		 2377 rtnl_lock();
2378
463d0183 2379 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2ec600d6 2380 if (err)
3b85875a 2381 goto out_rtnl;
2ec600d6 2382
79c97e97 2383 if (!rdev->ops->add_mpath) {
2ec600d6
LCC		 2384 err = -EOPNOTSUPP;
2385 goto out;
2386 }
2387
eec60b03
JM		 2388 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2389 err = -EOPNOTSUPP;
2390 goto out;
2391 }
2392
35a8efe1
JM		 2393 if (!netif_running(dev)) {
2394 err = -ENETDOWN;
2395 goto out;
2396 }
2397
79c97e97 2398 err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2ec600d6
LCC		 2399
2400 out:
79c97e97 2401 cfg80211_unlock_rdev(rdev);
2ec600d6 2402 dev_put(dev);
3b85875a
JB		 2403 out_rtnl:
2404 rtnl_unlock();
2405
2ec600d6
LCC		 2406 return err;
2407}
2408
2409static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2410{
79c97e97 2411 struct cfg80211_registered_device *rdev;
2ec600d6
LCC		 2412 int err;
2413 struct net_device *dev;
2414 u8 *dst = NULL;
2415
2416 if (info->attrs[NL80211_ATTR_MAC])
2417 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2418
3b85875a
JB		 2419 rtnl_lock();
2420
463d0183 2421 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2ec600d6 2422 if (err)
3b85875a 2423 goto out_rtnl;
2ec600d6 2424
79c97e97 2425 if (!rdev->ops->del_mpath) {
2ec600d6
LCC		 2426 err = -EOPNOTSUPP;
2427 goto out;
2428 }
2429
79c97e97 2430 err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2ec600d6
LCC		 2431
2432 out:
79c97e97 2433 cfg80211_unlock_rdev(rdev);
2ec600d6 2434 dev_put(dev);
3b85875a
JB		 2435 out_rtnl:
2436 rtnl_unlock();
2437
2ec600d6
LCC		 2438 return err;
2439}
2440
9f1ba906
JM		 2441static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2442{
79c97e97 2443 struct cfg80211_registered_device *rdev;
9f1ba906
JM		 2444 int err;
2445 struct net_device *dev;
2446 struct bss_parameters params;
2447
2448 memset(&params, 0, sizeof(params));
2449 /* default to not changing parameters */
2450 params.use_cts_prot = -1;
2451 params.use_short_preamble = -1;
2452 params.use_short_slot_time = -1;
2453
2454 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2455 params.use_cts_prot =
2456 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2457 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2458 params.use_short_preamble =
2459 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2460 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2461 params.use_short_slot_time =
2462 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
90c97a04
JM		 2463 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2464 params.basic_rates =
2465 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2466 params.basic_rates_len =
2467 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2468 }
9f1ba906 2469
3b85875a
JB		 2470 rtnl_lock();
2471
463d0183 2472 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
9f1ba906 2473 if (err)
3b85875a 2474 goto out_rtnl;
9f1ba906 2475
79c97e97 2476 if (!rdev->ops->change_bss) {
9f1ba906
JM		 2477 err = -EOPNOTSUPP;
2478 goto out;
2479 }
2480
eec60b03
JM		 2481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2482 err = -EOPNOTSUPP;
2483 goto out;
2484 }
2485
79c97e97 2486 err = rdev->ops->change_bss(&rdev->wiphy, dev, &params);
9f1ba906
JM		 2487
2488 out:
79c97e97 2489 cfg80211_unlock_rdev(rdev);
9f1ba906 2490 dev_put(dev);
3b85875a
JB		 2491 out_rtnl:
2492 rtnl_unlock();
2493
9f1ba906
JM		 2494 return err;
2495}
2496
b2e1b302
LR		 2497static const struct nla_policy
2498 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2499 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2500 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2501 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2502 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2503 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2504 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2505};
2506
2507static int parse_reg_rule(struct nlattr *tb[],
2508 struct ieee80211_reg_rule *reg_rule)
2509{
2510 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2511 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2512
2513 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2514 return -EINVAL;
2515 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2516 return -EINVAL;
2517 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2518 return -EINVAL;
2519 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2520 return -EINVAL;
2521 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2522 return -EINVAL;
2523
2524 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2525
2526 freq_range->start_freq_khz =
2527 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2528 freq_range->end_freq_khz =
2529 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2530 freq_range->max_bandwidth_khz =
2531 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2532
2533 power_rule->max_eirp =
2534 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2535
2536 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2537 power_rule->max_antenna_gain =
2538 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2539
2540 return 0;
2541}
2542
2543static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2544{
2545 int r;
2546 char *data = NULL;
2547
80778f18
LR		 2548 /*
2549 * You should only get this when cfg80211 hasn't yet initialized
2550 * completely when built-in to the kernel right between the time
2551 * window between nl80211_init() and regulatory_init(), if that is
2552 * even possible.
2553 */
2554 mutex_lock(&cfg80211_mutex);
2555 if (unlikely(!cfg80211_regdomain)) {
fe33eb39
LR		 2556 mutex_unlock(&cfg80211_mutex);
2557 return -EINPROGRESS;
80778f18 2558 }
fe33eb39 2559 mutex_unlock(&cfg80211_mutex);
80778f18 2560
fe33eb39
LR		 2561 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2562 return -EINVAL;
b2e1b302
LR		 2563
2564 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2565
2566#ifdef CONFIG_WIRELESS_OLD_REGULATORY
2567 /* We ignore world regdom requests with the old regdom setup */
fe33eb39
LR		 2568 if (is_world_regdom(data))
2569 return -EINVAL;
b2e1b302 2570#endif
fe33eb39
LR		 2571
2572 r = regulatory_hint_user(data);
2573
b2e1b302
LR		 2574 return r;
2575}
2576
93da9cc1 2577static int nl80211_get_mesh_params(struct sk_buff *skb,
2578 struct genl_info *info)
2579{
79c97e97 2580 struct cfg80211_registered_device *rdev;
93da9cc1 2581 struct mesh_config cur_params;
2582 int err;
2583 struct net_device *dev;
2584 void *hdr;
2585 struct nlattr *pinfoattr;
2586 struct sk_buff *msg;
2587
3b85875a
JB		 2588 rtnl_lock();
2589
93da9cc1 2590 /* Look up our device */
463d0183 2591 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
93da9cc1 2592 if (err)
3b85875a 2593 goto out_rtnl;
93da9cc1 2594
79c97e97 2595 if (!rdev->ops->get_mesh_params) {
f3f92586
JM		 2596 err = -EOPNOTSUPP;
2597 goto out;
2598 }
2599
93da9cc1 2600 /* Get the mesh params */
79c97e97 2601 err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
93da9cc1 2602 if (err)
2603 goto out;
2604
2605 /* Draw up a netlink message to send back */
fd2120ca 2606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
93da9cc1 2607 if (!msg) {
2608 err = -ENOBUFS;
2609 goto out;
2610 }
2611 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2612 NL80211_CMD_GET_MESH_PARAMS);
2613 if (!hdr)
2614 goto nla_put_failure;
2615 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2616 if (!pinfoattr)
2617 goto nla_put_failure;
2618 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2619 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2620 cur_params.dot11MeshRetryTimeout);
2621 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2622 cur_params.dot11MeshConfirmTimeout);
2623 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2624 cur_params.dot11MeshHoldingTimeout);
2625 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2626 cur_params.dot11MeshMaxPeerLinks);
2627 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2628 cur_params.dot11MeshMaxRetries);
2629 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2630 cur_params.dot11MeshTTL);
2631 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2632 cur_params.auto_open_plinks);
2633 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2634 cur_params.dot11MeshHWMPmaxPREQretries);
2635 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2636 cur_params.path_refresh_time);
2637 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2638 cur_params.min_discovery_timeout);
2639 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2640 cur_params.dot11MeshHWMPactivePathTimeout);
2641 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2642 cur_params.dot11MeshHWMPpreqMinInterval);
2643 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2644 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2645 nla_nest_end(msg, pinfoattr);
2646 genlmsg_end(msg, hdr);
134e6375 2647 err = genlmsg_reply(msg, info);
93da9cc1 2648 goto out;
2649
3b85875a 2650 nla_put_failure:
93da9cc1 2651 genlmsg_cancel(msg, hdr);
2652 err = -EMSGSIZE;
3b85875a 2653 out:
93da9cc1 2654 /* Cleanup */
79c97e97 2655 cfg80211_unlock_rdev(rdev);
93da9cc1 2656 dev_put(dev);
3b85875a
JB		 2657 out_rtnl:
2658 rtnl_unlock();
2659
93da9cc1 2660 return err;
2661}
2662
2663#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2664do {\
2665 if (table[attr_num]) {\
2666 cfg.param = nla_fn(table[attr_num]); \
2667 mask |= (1 << (attr_num - 1)); \
2668 } \
2669} while (0);\
2670
2671static struct nla_policy
2672nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2673 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2674 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2675 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2676 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2677 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2678 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2679 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2680
2681 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2682 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2683 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2684 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2685 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2686 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2687};
2688
2689static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2690{
2691 int err;
2692 u32 mask;
79c97e97 2693 struct cfg80211_registered_device *rdev;
93da9cc1 2694 struct net_device *dev;
2695 struct mesh_config cfg;
2696 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2697 struct nlattr *parent_attr;
2698
2699 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2700 if (!parent_attr)
2701 return -EINVAL;
2702 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2703 parent_attr, nl80211_meshconf_params_policy))
2704 return -EINVAL;
2705
3b85875a
JB		 2706 rtnl_lock();
2707
463d0183 2708 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
93da9cc1 2709 if (err)
3b85875a 2710 goto out_rtnl;
93da9cc1 2711
79c97e97 2712 if (!rdev->ops->set_mesh_params) {
f3f92586
JM		 2713 err = -EOPNOTSUPP;
2714 goto out;
2715 }
2716
93da9cc1 2717 /* This makes sure that there aren't more than 32 mesh config
2718 * parameters (otherwise our bitfield scheme would not work.) */
2719 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2720
2721 /* Fill in the params struct */
2722 mask = 0;
2723 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2724 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2725 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2726 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2727 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2728 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2729 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2730 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2731 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2732 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2734 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2735 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2736 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2737 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2738 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2739 nla_get_u8);
2740 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2741 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2742 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2743 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2744 nla_get_u16);
2745 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2746 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2747 nla_get_u32);
2748 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2749 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2750 nla_get_u16);
2751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2752 dot11MeshHWMPnetDiameterTraversalTime,
2753 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2754 nla_get_u16);
2755
2756 /* Apply changes */
79c97e97 2757 err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
93da9cc1 2758
f3f92586 2759 out:
93da9cc1 2760 /* cleanup */
79c97e97 2761 cfg80211_unlock_rdev(rdev);
93da9cc1 2762 dev_put(dev);
3b85875a
JB		 2763 out_rtnl:
2764 rtnl_unlock();
2765
93da9cc1 2766 return err;
2767}
2768
2769#undef FILL_IN_MESH_PARAM_IF_SET
2770
f130347c
LR		 2771static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2772{
2773 struct sk_buff *msg;
2774 void *hdr = NULL;
2775 struct nlattr *nl_reg_rules;
2776 unsigned int i;
2777 int err = -EINVAL;
2778
a1794390 2779 mutex_lock(&cfg80211_mutex);
f130347c
LR		 2780
2781 if (!cfg80211_regdomain)
2782 goto out;
2783
fd2120ca 2784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
f130347c
LR		 2785 if (!msg) {
2786 err = -ENOBUFS;
2787 goto out;
2788 }
2789
2790 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2791 NL80211_CMD_GET_REG);
2792 if (!hdr)
2793 goto nla_put_failure;
2794
2795 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2796 cfg80211_regdomain->alpha2);
2797
2798 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2799 if (!nl_reg_rules)
2800 goto nla_put_failure;
2801
2802 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2803 struct nlattr *nl_reg_rule;
2804 const struct ieee80211_reg_rule *reg_rule;
2805 const struct ieee80211_freq_range *freq_range;
2806 const struct ieee80211_power_rule *power_rule;
2807
2808 reg_rule = &cfg80211_regdomain->reg_rules[i];
2809 freq_range = &reg_rule->freq_range;
2810 power_rule = &reg_rule->power_rule;
2811
2812 nl_reg_rule = nla_nest_start(msg, i);
2813 if (!nl_reg_rule)
2814 goto nla_put_failure;
2815
2816 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2817 reg_rule->flags);
2818 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2819 freq_range->start_freq_khz);
2820 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2821 freq_range->end_freq_khz);
2822 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2823 freq_range->max_bandwidth_khz);
2824 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2825 power_rule->max_antenna_gain);
2826 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2827 power_rule->max_eirp);
2828
2829 nla_nest_end(msg, nl_reg_rule);
2830 }
2831
2832 nla_nest_end(msg, nl_reg_rules);
2833
2834 genlmsg_end(msg, hdr);
134e6375 2835 err = genlmsg_reply(msg, info);
f130347c
LR		 2836 goto out;
2837
2838nla_put_failure:
2839 genlmsg_cancel(msg, hdr);
2840 err = -EMSGSIZE;
2841out:
a1794390 2842 mutex_unlock(&cfg80211_mutex);
f130347c
LR		 2843 return err;
2844}
2845
b2e1b302
LR		 2846static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2847{
2848 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2849 struct nlattr *nl_reg_rule;
2850 char *alpha2 = NULL;
2851 int rem_reg_rules = 0, r = 0;
2852 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2853 struct ieee80211_regdomain *rd = NULL;
2854
2855 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2856 return -EINVAL;
2857
2858 if (!info->attrs[NL80211_ATTR_REG_RULES])
2859 return -EINVAL;
2860
2861 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2862
2863 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2864 rem_reg_rules) {
2865 num_rules++;
2866 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4776c6e7 2867 return -EINVAL;
b2e1b302
LR		 2868 }
2869
61405e97
LR		 2870 mutex_lock(&cfg80211_mutex);
2871
d0e18f83
LR		 2872 if (!reg_is_valid_request(alpha2)) {
2873 r = -EINVAL;
2874 goto bad_reg;
2875 }
b2e1b302
LR		 2876
2877 size_of_regd = sizeof(struct ieee80211_regdomain) +
2878 (num_rules * sizeof(struct ieee80211_reg_rule));
2879
2880 rd = kzalloc(size_of_regd, GFP_KERNEL);
d0e18f83
LR		 2881 if (!rd) {
2882 r = -ENOMEM;
2883 goto bad_reg;
2884 }
b2e1b302
LR		 2885
2886 rd->n_reg_rules = num_rules;
2887 rd->alpha2[0] = alpha2[0];
2888 rd->alpha2[1] = alpha2[1];
2889
2890 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2891 rem_reg_rules) {
2892 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2893 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2894 reg_rule_policy);
2895 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2896 if (r)
2897 goto bad_reg;
2898
2899 rule_idx++;
2900
d0e18f83
LR		 2901 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2902 r = -EINVAL;
b2e1b302 2903 goto bad_reg;
d0e18f83 2904 }
b2e1b302
LR		 2905 }
2906
2907 BUG_ON(rule_idx != num_rules);
2908
b2e1b302 2909 r = set_regdom(rd);
61405e97 2910
a1794390 2911 mutex_unlock(&cfg80211_mutex);
d0e18f83 2912
b2e1b302
LR		 2913 return r;
2914
d2372b31 2915 bad_reg:
61405e97 2916 mutex_unlock(&cfg80211_mutex);
b2e1b302 2917 kfree(rd);
d0e18f83 2918 return r;
b2e1b302
LR		 2919}
2920
83f5e2cf
JB		 2921static int validate_scan_freqs(struct nlattr *freqs)
2922{
2923 struct nlattr *attr1, *attr2;
2924 int n_channels = 0, tmp1, tmp2;
2925
2926 nla_for_each_nested(attr1, freqs, tmp1) {
2927 n_channels++;
2928 /*
2929 * Some hardware has a limited channel list for
2930 * scanning, and it is pretty much nonsensical
2931 * to scan for a channel twice, so disallow that
2932 * and don't require drivers to check that the
2933 * channel list they get isn't longer than what
2934 * they can scan, as long as they can scan all
2935 * the channels they registered at once.
2936 */
2937 nla_for_each_nested(attr2, freqs, tmp2)
2938 if (attr1 != attr2 &&
2939 nla_get_u32(attr1) == nla_get_u32(attr2))
2940 return 0;
2941 }
2942
2943 return n_channels;
2944}
2945
2a519311
JB		 2946static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2947{
79c97e97 2948 struct cfg80211_registered_device *rdev;
2a519311
JB		 2949 struct net_device *dev;
2950 struct cfg80211_scan_request *request;
2951 struct cfg80211_ssid *ssid;
2952 struct ieee80211_channel *channel;
2953 struct nlattr *attr;
2954 struct wiphy *wiphy;
83f5e2cf 2955 int err, tmp, n_ssids = 0, n_channels, i;
2a519311 2956 enum ieee80211_band band;
70692ad2 2957 size_t ie_len;
2a519311 2958
f4a11bb0
JB		 2959 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2960 return -EINVAL;
2961
3b85875a
JB		 2962 rtnl_lock();
2963
463d0183 2964 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2a519311 2965 if (err)
3b85875a 2966 goto out_rtnl;
2a519311 2967
79c97e97 2968 wiphy = &rdev->wiphy;
2a519311 2969
79c97e97 2970 if (!rdev->ops->scan) {
2a519311
JB		 2971 err = -EOPNOTSUPP;
2972 goto out;
2973 }
2974
35a8efe1
JM		 2975 if (!netif_running(dev)) {
2976 err = -ENETDOWN;
2977 goto out;
2978 }
2979
79c97e97 2980 if (rdev->scan_req) {
2a519311 2981 err = -EBUSY;
3b85875a 2982 goto out;
2a519311
JB		 2983 }
2984
2985 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
83f5e2cf
JB		 2986 n_channels = validate_scan_freqs(
2987 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
2a519311
JB		 2988 if (!n_channels) {
2989 err = -EINVAL;
3b85875a 2990 goto out;
2a519311
JB		 2991 }
2992 } else {
83f5e2cf
JB		 2993 n_channels = 0;
2994
2a519311
JB		 2995 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2996 if (wiphy->bands[band])
2997 n_channels += wiphy->bands[band]->n_channels;
2998 }
2999
3000 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3001 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3002 n_ssids++;
3003
3004 if (n_ssids > wiphy->max_scan_ssids) {
3005 err = -EINVAL;
3b85875a 3006 goto out;
2a519311
JB		 3007 }
3008
70692ad2
JM		 3009 if (info->attrs[NL80211_ATTR_IE])
3010 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3011 else
3012 ie_len = 0;
3013
18a83659
JB		 3014 if (ie_len > wiphy->max_scan_ie_len) {
3015 err = -EINVAL;
3016 goto out;
3017 }
3018
2a519311
JB		 3019 request = kzalloc(sizeof(*request)
3020 + sizeof(*ssid) * n_ssids
70692ad2
JM		 3021 + sizeof(channel) * n_channels
3022 + ie_len, GFP_KERNEL);
2a519311
JB		 3023 if (!request) {
3024 err = -ENOMEM;
3b85875a 3025 goto out;
2a519311
JB		 3026 }
3027
3028 request->channels = (void *)((char *)request + sizeof(*request));
3029 request->n_channels = n_channels;
3030 if (n_ssids)
3031 request->ssids = (void *)(request->channels + n_channels);
3032 request->n_ssids = n_ssids;
70692ad2
JM		 3033 if (ie_len) {
3034 if (request->ssids)
3035 request->ie = (void *)(request->ssids + n_ssids);
3036 else
3037 request->ie = (void *)(request->channels + n_channels);
3038 }
2a519311
JB		 3039
3040 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3041 /* user specified, bail out if channel not found */
3042 request->n_channels = n_channels;
3043 i = 0;
3044 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3045 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3046 if (!request->channels[i]) {
3047 err = -EINVAL;
3048 goto out_free;
3049 }
3050 i++;
3051 }
3052 } else {
3053 /* all channels */
3054 i = 0;
3055 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3056 int j;
3057 if (!wiphy->bands[band])
3058 continue;
3059 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3060 request->channels[i] = &wiphy->bands[band]->channels[j];
3061 i++;
3062 }
3063 }
3064 }
3065
3066 i = 0;
3067 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3068 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3069 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3070 err = -EINVAL;
3071 goto out_free;
3072 }
3073 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3074 request->ssids[i].ssid_len = nla_len(attr);
3075 i++;
3076 }
3077 }
3078
70692ad2
JM		 3079 if (info->attrs[NL80211_ATTR_IE]) {
3080 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
de95a54b
JB		 3081 memcpy((void *)request->ie,
3082 nla_data(info->attrs[NL80211_ATTR_IE]),
70692ad2
JM		 3083 request->ie_len);
3084 }
3085
463d0183 3086 request->dev = dev;
79c97e97 3087 request->wiphy = &rdev->wiphy;
2a519311 3088
79c97e97
JB		 3089 rdev->scan_req = request;
3090 err = rdev->ops->scan(&rdev->wiphy, dev, request);
2a519311 3091
463d0183 3092 if (!err) {
79c97e97 3093 nl80211_send_scan_start(rdev, dev);
463d0183
JB		 3094 dev_hold(dev);
3095 }
a538e2d5 3096
2a519311
JB		 3097 out_free:
3098 if (err) {
79c97e97 3099 rdev->scan_req = NULL;
2a519311
JB		 3100 kfree(request);
3101 }
2a519311 3102 out:
79c97e97 3103 cfg80211_unlock_rdev(rdev);
2a519311 3104 dev_put(dev);
3b85875a
JB		 3105 out_rtnl:
3106 rtnl_unlock();
3107
2a519311
JB		 3108 return err;
3109}
3110
3111static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3112 struct cfg80211_registered_device *rdev,
48ab905d
JB		 3113 struct wireless_dev *wdev,
3114 struct cfg80211_internal_bss *intbss)
2a519311 3115{
48ab905d 3116 struct cfg80211_bss *res = &intbss->pub;
2a519311
JB		 3117 void *hdr;
3118 struct nlattr *bss;
48ab905d
JB		 3119 int i;
3120
3121 ASSERT_WDEV_LOCK(wdev);
2a519311
JB		 3122
3123 hdr = nl80211hdr_put(msg, pid, seq, flags,
3124 NL80211_CMD_NEW_SCAN_RESULTS);
3125 if (!hdr)
3126 return -1;
3127
3128 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
3129 rdev->bss_generation);
48ab905d 3130 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
2a519311
JB		 3131
3132 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3133 if (!bss)
3134 goto nla_put_failure;
3135 if (!is_zero_ether_addr(res->bssid))
3136 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3137 if (res->information_elements && res->len_information_elements)
3138 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3139 res->len_information_elements,
3140 res->information_elements);
3141 if (res->tsf)
3142 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3143 if (res->beacon_interval)
3144 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3145 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3146 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3147
77965c97 3148 switch (rdev->wiphy.signal_type) {
2a519311
JB		 3149 case CFG80211_SIGNAL_TYPE_MBM:
3150 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3151 break;
3152 case CFG80211_SIGNAL_TYPE_UNSPEC:
3153 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3154 break;
3155 default:
3156 break;
3157 }
3158
48ab905d
JB		 3159 switch (wdev->iftype) {
3160 case NL80211_IFTYPE_STATION:
3161 if (intbss == wdev->current_bss)
3162 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3163 NL80211_BSS_STATUS_ASSOCIATED);
3164 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3165 if (intbss != wdev->auth_bsses[i])
3166 continue;
3167 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3168 NL80211_BSS_STATUS_AUTHENTICATED);
3169 break;
3170 }
3171 break;
3172 case NL80211_IFTYPE_ADHOC:
3173 if (intbss == wdev->current_bss)
3174 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3175 NL80211_BSS_STATUS_IBSS_JOINED);
3176 break;
3177 default:
3178 break;
3179 }
3180
2a519311
JB		 3181 nla_nest_end(msg, bss);
3182
3183 return genlmsg_end(msg, hdr);
3184
3185 nla_put_failure:
3186 genlmsg_cancel(msg, hdr);
3187 return -EMSGSIZE;
3188}
3189
3190static int nl80211_dump_scan(struct sk_buff *skb,
3191 struct netlink_callback *cb)
3192{
48ab905d
JB		 3193 struct cfg80211_registered_device *rdev;
3194 struct net_device *dev;
2a519311 3195 struct cfg80211_internal_bss *scan;
48ab905d 3196 struct wireless_dev *wdev;
2a519311
JB		 3197 int ifidx = cb->args[0];
3198 int start = cb->args[1], idx = 0;
3199 int err;
3200
3201 if (!ifidx) {
3202 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
3203 nl80211_fam.attrbuf, nl80211_fam.maxattr,
3204 nl80211_policy);
3205 if (err)
3206 return err;
3207
3208 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
3209 return -EINVAL;
3210
3211 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
3212 if (!ifidx)
3213 return -EINVAL;
3214 cb->args[0] = ifidx;
3215 }
3216
463d0183 3217 dev = dev_get_by_index(sock_net(skb->sk), ifidx);
48ab905d 3218 if (!dev)
2a519311
JB		 3219 return -ENODEV;
3220
463d0183 3221 rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
48ab905d
JB		 3222 if (IS_ERR(rdev)) {
3223 err = PTR_ERR(rdev);
2a519311
JB		 3224 goto out_put_netdev;
3225 }
3226
48ab905d 3227 wdev = dev->ieee80211_ptr;
2a519311 3228
48ab905d
JB		 3229 wdev_lock(wdev);
3230 spin_lock_bh(&rdev->bss_lock);
3231 cfg80211_bss_expire(rdev);
3232
3233 list_for_each_entry(scan, &rdev->bss_list, list) {
2a519311
JB		 3234 if (++idx <= start)
3235 continue;
3236 if (nl80211_send_bss(skb,
3237 NETLINK_CB(cb->skb).pid,
3238 cb->nlh->nlmsg_seq, NLM_F_MULTI,
48ab905d 3239 rdev, wdev, scan) < 0) {
2a519311
JB		 3240 idx--;
3241 goto out;
3242 }
3243 }
3244
3245 out:
48ab905d
JB		 3246 spin_unlock_bh(&rdev->bss_lock);
3247 wdev_unlock(wdev);
2a519311
JB		 3248
3249 cb->args[1] = idx;
3250 err = skb->len;
48ab905d 3251 cfg80211_unlock_rdev(rdev);
2a519311 3252 out_put_netdev:
48ab905d 3253 dev_put(dev);
2a519311
JB		 3254
3255 return err;
3256}
3257
255e737e
JM		 3258static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3259{
b23aa676
SO		 3260 return auth_type <= NL80211_AUTHTYPE_MAX;
3261}
3262
3263static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3264{
3265 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3266 NL80211_WPA_VERSION_2));
3267}
3268
3269static bool nl80211_valid_akm_suite(u32 akm)
3270{
3271 return akm == WLAN_AKM_SUITE_8021X ||
3272 akm == WLAN_AKM_SUITE_PSK;
3273}
3274
3275static bool nl80211_valid_cipher_suite(u32 cipher)
3276{
3277 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3278 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3279 cipher == WLAN_CIPHER_SUITE_TKIP ||
3280 cipher == WLAN_CIPHER_SUITE_CCMP ||
3281 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
255e737e
JM		 3282}
3283
b23aa676 3284
636a5d36
JM		 3285static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3286{
79c97e97 3287 struct cfg80211_registered_device *rdev;
636a5d36 3288 struct net_device *dev;
19957bb3
JB		 3289 struct ieee80211_channel *chan;
3290 const u8 *bssid, *ssid, *ie = NULL;
3291 int err, ssid_len, ie_len = 0;
3292 enum nl80211_auth_type auth_type;
fffd0934 3293 struct key_parse key;
636a5d36 3294
f4a11bb0
JB		 3295 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3296 return -EINVAL;
3297
3298 if (!info->attrs[NL80211_ATTR_MAC])
3299 return -EINVAL;
3300
1778092e
JM		 3301 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3302 return -EINVAL;
3303
19957bb3
JB		 3304 if (!info->attrs[NL80211_ATTR_SSID])
3305 return -EINVAL;
3306
3307 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3308 return -EINVAL;
3309
fffd0934
JB		 3310 err = nl80211_parse_key(info, &key);
3311 if (err)
3312 return err;
3313
3314 if (key.idx >= 0) {
3315 if (!key.p.key || !key.p.key_len)
3316 return -EINVAL;
3317 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3318 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3319 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3320 key.p.key_len != WLAN_KEY_LEN_WEP104))
3321 return -EINVAL;
3322 if (key.idx > 4)
3323 return -EINVAL;
3324 } else {
3325 key.p.key_len = 0;
3326 key.p.key = NULL;
3327 }
3328
636a5d36
JM		 3329 rtnl_lock();
3330
463d0183 3331 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
636a5d36
JM		 3332 if (err)
3333 goto unlock_rtnl;
3334
79c97e97 3335 if (!rdev->ops->auth) {
636a5d36
JM		 3336 err = -EOPNOTSUPP;
3337 goto out;
3338 }
3339
eec60b03
JM		 3340 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3341 err = -EOPNOTSUPP;
3342 goto out;
3343 }
3344
35a8efe1
JM		 3345 if (!netif_running(dev)) {
3346 err = -ENETDOWN;
3347 goto out;
3348 }
3349
19957bb3 3350 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
79c97e97 3351 chan = ieee80211_get_channel(&rdev->wiphy,
19957bb3
JB		 3352 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3353 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
3354 err = -EINVAL;
3355 goto out;
636a5d36
JM		 3356 }
3357
19957bb3
JB		 3358 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3359 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
636a5d36
JM		 3360
3361 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3362 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3363 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3364 }
3365
19957bb3
JB		 3366 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3367 if (!nl80211_valid_auth_type(auth_type)) {
1778092e
JM		 3368 err = -EINVAL;
3369 goto out;
636a5d36
JM		 3370 }
3371
79c97e97 3372 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
fffd0934
JB		 3373 ssid, ssid_len, ie, ie_len,
3374 key.p.key, key.p.key_len, key.idx);
636a5d36
JM		 3375
3376out:
79c97e97 3377 cfg80211_unlock_rdev(rdev);
636a5d36
JM		 3378 dev_put(dev);
3379unlock_rtnl:
3380 rtnl_unlock();
3381 return err;
3382}
3383
b23aa676 3384static int nl80211_crypto_settings(struct genl_info *info,
3dc27d25
JB		 3385 struct cfg80211_crypto_settings *settings,
3386 int cipher_limit)
b23aa676
SO		 3387{
3388 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3389
3390 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3391 void *data;
3392 int len, i;
3393
3394 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3395 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3396 settings->n_ciphers_pairwise = len / sizeof(u32);
3397
3398 if (len % sizeof(u32))
3399 return -EINVAL;
3400
3dc27d25 3401 if (settings->n_ciphers_pairwise > cipher_limit)
b23aa676
SO		 3402 return -EINVAL;
3403
3404 memcpy(settings->ciphers_pairwise, data, len);
3405
3406 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3407 if (!nl80211_valid_cipher_suite(
3408 settings->ciphers_pairwise[i]))
3409 return -EINVAL;
3410 }
3411
3412 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3413 settings->cipher_group =
3414 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3415 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3416 return -EINVAL;
3417 }
3418
3419 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3420 settings->wpa_versions =
3421 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3422 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3423 return -EINVAL;
3424 }
3425
3426 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3427 void *data;
3428 int len, i;
3429
3430 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3431 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3432 settings->n_akm_suites = len / sizeof(u32);
3433
3434 if (len % sizeof(u32))
3435 return -EINVAL;
3436
3437 memcpy(settings->akm_suites, data, len);
3438
3439 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3440 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3441 return -EINVAL;
3442 }
3443
3444 return 0;
3445}
3446
636a5d36
JM		 3447static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3448{
19957bb3 3449 struct cfg80211_registered_device *rdev;
636a5d36 3450 struct net_device *dev;
19957bb3
JB		 3451 struct cfg80211_crypto_settings crypto;
3452 struct ieee80211_channel *chan;
3e5d7649 3453 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
19957bb3
JB		 3454 int err, ssid_len, ie_len = 0;
3455 bool use_mfp = false;
636a5d36 3456
f4a11bb0
JB		 3457 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3458 return -EINVAL;
3459
3460 if (!info->attrs[NL80211_ATTR_MAC] ||
19957bb3
JB		 3461 !info->attrs[NL80211_ATTR_SSID] ||
3462 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
f4a11bb0
JB		 3463 return -EINVAL;
3464
636a5d36
JM		 3465 rtnl_lock();
3466
463d0183 3467 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
636a5d36
JM		 3468 if (err)
3469 goto unlock_rtnl;
3470
19957bb3 3471 if (!rdev->ops->assoc) {
636a5d36
JM		 3472 err = -EOPNOTSUPP;
3473 goto out;
3474 }
3475
eec60b03
JM		 3476 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3477 err = -EOPNOTSUPP;
3478 goto out;
3479 }
3480
35a8efe1
JM		 3481 if (!netif_running(dev)) {
3482 err = -ENETDOWN;
3483 goto out;
3484 }
3485
19957bb3 3486 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
636a5d36 3487
19957bb3
JB		 3488 chan = ieee80211_get_channel(&rdev->wiphy,
3489 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3490 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
3491 err = -EINVAL;
3492 goto out;
636a5d36
JM		 3493 }
3494
19957bb3
JB		 3495 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3496 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
636a5d36
JM		 3497
3498 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3499 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3500 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3501 }
3502
dc6382ce 3503 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4f5dadce 3504 enum nl80211_mfp mfp =
dc6382ce 3505 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4f5dadce 3506 if (mfp == NL80211_MFP_REQUIRED)
19957bb3 3507 use_mfp = true;
4f5dadce 3508 else if (mfp != NL80211_MFP_NO) {
dc6382ce
JM		 3509 err = -EINVAL;
3510 goto out;
3511 }
3512 }
3513
3e5d7649
JB		 3514 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3515 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3516
3dc27d25 3517 err = nl80211_crypto_settings(info, &crypto, 1);
b23aa676 3518 if (!err)
3e5d7649
JB		 3519 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3520 ssid, ssid_len, ie, ie_len, use_mfp,
19957bb3 3521 &crypto);
636a5d36
JM		 3522
3523out:
4d0c8aea 3524 cfg80211_unlock_rdev(rdev);
636a5d36
JM		 3525 dev_put(dev);
3526unlock_rtnl:
3527 rtnl_unlock();
3528 return err;
3529}
3530
3531static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3532{
79c97e97 3533 struct cfg80211_registered_device *rdev;
636a5d36 3534 struct net_device *dev;
19957bb3
JB		 3535 const u8 *ie = NULL, *bssid;
3536 int err, ie_len = 0;
3537 u16 reason_code;
636a5d36 3538
f4a11bb0
JB		 3539 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3540 return -EINVAL;
3541
3542 if (!info->attrs[NL80211_ATTR_MAC])
3543 return -EINVAL;
3544
3545 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3546 return -EINVAL;
3547
636a5d36
JM		 3548 rtnl_lock();
3549
463d0183 3550 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
636a5d36
JM		 3551 if (err)
3552 goto unlock_rtnl;
3553
79c97e97 3554 if (!rdev->ops->deauth) {
636a5d36
JM		 3555 err = -EOPNOTSUPP;
3556 goto out;
3557 }
3558
eec60b03
JM		 3559 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3560 err = -EOPNOTSUPP;
3561 goto out;
3562 }
3563
35a8efe1
JM		 3564 if (!netif_running(dev)) {
3565 err = -ENETDOWN;
3566 goto out;
3567 }
3568
19957bb3 3569 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
636a5d36 3570
19957bb3
JB		 3571 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3572 if (reason_code == 0) {
f4a11bb0
JB		 3573 /* Reason Code 0 is reserved */
3574 err = -EINVAL;
3575 goto out;
255e737e 3576 }
636a5d36
JM		 3577
3578 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3579 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3580 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3581 }
3582
79c97e97 3583 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code);
636a5d36
JM		 3584
3585out:
79c97e97 3586 cfg80211_unlock_rdev(rdev);
636a5d36
JM		 3587 dev_put(dev);
3588unlock_rtnl:
3589 rtnl_unlock();
3590 return err;
3591}
3592
3593static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3594{
79c97e97 3595 struct cfg80211_registered_device *rdev;
636a5d36 3596 struct net_device *dev;
19957bb3
JB		 3597 const u8 *ie = NULL, *bssid;
3598 int err, ie_len = 0;
3599 u16 reason_code;
636a5d36 3600
f4a11bb0
JB		 3601 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3602 return -EINVAL;
3603
3604 if (!info->attrs[NL80211_ATTR_MAC])
3605 return -EINVAL;
3606
3607 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3608 return -EINVAL;
3609
636a5d36
JM		 3610 rtnl_lock();
3611
463d0183 3612 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
636a5d36
JM		 3613 if (err)
3614 goto unlock_rtnl;
3615
79c97e97 3616 if (!rdev->ops->disassoc) {
636a5d36
JM		 3617 err = -EOPNOTSUPP;
3618 goto out;
3619 }
3620
eec60b03
JM		 3621 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3622 err = -EOPNOTSUPP;
3623 goto out;
3624 }
3625
35a8efe1
JM		 3626 if (!netif_running(dev)) {
3627 err = -ENETDOWN;
3628 goto out;
3629 }
3630
19957bb3 3631 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
636a5d36 3632
19957bb3
JB		 3633 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3634 if (reason_code == 0) {
f4a11bb0
JB		 3635 /* Reason Code 0 is reserved */
3636 err = -EINVAL;
3637 goto out;
255e737e 3638 }
636a5d36
JM		 3639
3640 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3641 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3642 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3643 }
3644
79c97e97 3645 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code);
636a5d36
JM		 3646
3647out:
79c97e97 3648 cfg80211_unlock_rdev(rdev);
636a5d36
JM		 3649 dev_put(dev);
3650unlock_rtnl:
3651 rtnl_unlock();
3652 return err;
3653}
3654
04a773ad
JB		 3655static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3656{
79c97e97 3657 struct cfg80211_registered_device *rdev;
04a773ad
JB		 3658 struct net_device *dev;
3659 struct cfg80211_ibss_params ibss;
3660 struct wiphy *wiphy;
fffd0934 3661 struct cfg80211_cached_keys *connkeys = NULL;
04a773ad
JB		 3662 int err;
3663
8e30bc55
JB		 3664 memset(&ibss, 0, sizeof(ibss));
3665
04a773ad
JB		 3666 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3667 return -EINVAL;
3668
3669 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3670 !info->attrs[NL80211_ATTR_SSID] ||
3671 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3672 return -EINVAL;
3673
8e30bc55
JB		 3674 ibss.beacon_interval = 100;
3675
3676 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3677 ibss.beacon_interval =
3678 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3679 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3680 return -EINVAL;
3681 }
3682
04a773ad
JB		 3683 rtnl_lock();
3684
463d0183 3685 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
04a773ad
JB		 3686 if (err)
3687 goto unlock_rtnl;
3688
79c97e97 3689 if (!rdev->ops->join_ibss) {
04a773ad
JB		 3690 err = -EOPNOTSUPP;
3691 goto out;
3692 }
3693
3694 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3695 err = -EOPNOTSUPP;
3696 goto out;
3697 }
3698
3699 if (!netif_running(dev)) {
3700 err = -ENETDOWN;
3701 goto out;
3702 }
3703
79c97e97 3704 wiphy = &rdev->wiphy;
04a773ad
JB		 3705
3706 if (info->attrs[NL80211_ATTR_MAC])
3707 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3708 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3709 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3710
3711 if (info->attrs[NL80211_ATTR_IE]) {
3712 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3713 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3714 }
3715
3716 ibss.channel = ieee80211_get_channel(wiphy,
3717 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3718 if (!ibss.channel ||
3719 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3720 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3721 err = -EINVAL;
3722 goto out;
3723 }
3724
3725 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
fffd0934
JB		 3726 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3727
3728 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3729 connkeys = nl80211_parse_connkeys(rdev,
3730 info->attrs[NL80211_ATTR_KEYS]);
3731 if (IS_ERR(connkeys)) {
3732 err = PTR_ERR(connkeys);
3733 connkeys = NULL;
3734 goto out;
3735 }
3736 }
04a773ad 3737
fffd0934 3738 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
04a773ad
JB		 3739
3740out:
79c97e97 3741 cfg80211_unlock_rdev(rdev);
04a773ad
JB		 3742 dev_put(dev);
3743unlock_rtnl:
fffd0934
JB		 3744 if (err)
3745 kfree(connkeys);
04a773ad
JB		 3746 rtnl_unlock();
3747 return err;
3748}
3749
3750static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3751{
79c97e97 3752 struct cfg80211_registered_device *rdev;
04a773ad
JB		 3753 struct net_device *dev;
3754 int err;
3755
3756 rtnl_lock();
3757
463d0183 3758 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
04a773ad
JB		 3759 if (err)
3760 goto unlock_rtnl;
3761
79c97e97 3762 if (!rdev->ops->leave_ibss) {
04a773ad
JB		 3763 err = -EOPNOTSUPP;
3764 goto out;
3765 }
3766
3767 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3768 err = -EOPNOTSUPP;
3769 goto out;
3770 }
3771
3772 if (!netif_running(dev)) {
3773 err = -ENETDOWN;
3774 goto out;
3775 }
3776
79c97e97 3777 err = cfg80211_leave_ibss(rdev, dev, false);
04a773ad
JB		 3778
3779out:
79c97e97 3780 cfg80211_unlock_rdev(rdev);
04a773ad
JB		 3781 dev_put(dev);
3782unlock_rtnl:
3783 rtnl_unlock();
3784 return err;
3785}
3786
aff89a9b
JB		 3787#ifdef CONFIG_NL80211_TESTMODE
3788static struct genl_multicast_group nl80211_testmode_mcgrp = {
3789 .name = "testmode",
3790};
3791
3792static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3793{
3794 struct cfg80211_registered_device *rdev;
3795 int err;
3796
3797 if (!info->attrs[NL80211_ATTR_TESTDATA])
3798 return -EINVAL;
3799
3800 rtnl_lock();
3801
3802 rdev = cfg80211_get_dev_from_info(info);
3803 if (IS_ERR(rdev)) {
3804 err = PTR_ERR(rdev);
3805 goto unlock_rtnl;
3806 }
3807
3808 err = -EOPNOTSUPP;
3809 if (rdev->ops->testmode_cmd) {
3810 rdev->testmode_info = info;
3811 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3812 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3813 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3814 rdev->testmode_info = NULL;
3815 }
3816
4d0c8aea 3817 cfg80211_unlock_rdev(rdev);
aff89a9b
JB		 3818
3819 unlock_rtnl:
3820 rtnl_unlock();
3821 return err;
3822}
3823
3824static struct sk_buff *
3825__cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
3826 int approxlen, u32 pid, u32 seq, gfp_t gfp)
3827{
3828 struct sk_buff *skb;
3829 void *hdr;
3830 struct nlattr *data;
3831
3832 skb = nlmsg_new(approxlen + 100, gfp);
3833 if (!skb)
3834 return NULL;
3835
3836 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
3837 if (!hdr) {
3838 kfree_skb(skb);
3839 return NULL;
3840 }
3841
3842 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3843 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
3844
3845 ((void **)skb->cb)[0] = rdev;
3846 ((void **)skb->cb)[1] = hdr;
3847 ((void **)skb->cb)[2] = data;
3848
3849 return skb;
3850
3851 nla_put_failure:
3852 kfree_skb(skb);
3853 return NULL;
3854}
3855
3856struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
3857 int approxlen)
3858{
3859 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3860
3861 if (WARN_ON(!rdev->testmode_info))
3862 return NULL;
3863
3864 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
3865 rdev->testmode_info->snd_pid,
3866 rdev->testmode_info->snd_seq,
3867 GFP_KERNEL);
3868}
3869EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
3870
3871int cfg80211_testmode_reply(struct sk_buff *skb)
3872{
3873 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
3874 void *hdr = ((void **)skb->cb)[1];
3875 struct nlattr *data = ((void **)skb->cb)[2];
3876
3877 if (WARN_ON(!rdev->testmode_info)) {
3878 kfree_skb(skb);
3879 return -EINVAL;
3880 }
3881
3882 nla_nest_end(skb, data);
3883 genlmsg_end(skb, hdr);
3884 return genlmsg_reply(skb, rdev->testmode_info);
3885}
3886EXPORT_SYMBOL(cfg80211_testmode_reply);
3887
3888struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
3889 int approxlen, gfp_t gfp)
3890{
3891 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3892
3893 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
3894}
3895EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
3896
3897void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
3898{
3899 void *hdr = ((void **)skb->cb)[1];
3900 struct nlattr *data = ((void **)skb->cb)[2];
3901
3902 nla_nest_end(skb, data);
3903 genlmsg_end(skb, hdr);
3904 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
3905}
3906EXPORT_SYMBOL(cfg80211_testmode_event);
3907#endif
3908
b23aa676
SO		 3909static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
3910{
79c97e97 3911 struct cfg80211_registered_device *rdev;
b23aa676
SO		 3912 struct net_device *dev;
3913 struct cfg80211_connect_params connect;
3914 struct wiphy *wiphy;
fffd0934 3915 struct cfg80211_cached_keys *connkeys = NULL;
b23aa676
SO		 3916 int err;
3917
3918 memset(&connect, 0, sizeof(connect));
3919
3920 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3921 return -EINVAL;
3922
3923 if (!info->attrs[NL80211_ATTR_SSID] ||
3924 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3925 return -EINVAL;
3926
3927 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3928 connect.auth_type =
3929 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3930 if (!nl80211_valid_auth_type(connect.auth_type))
3931 return -EINVAL;
3932 } else
3933 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3934
3935 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
3936
3dc27d25
JB		 3937 err = nl80211_crypto_settings(info, &connect.crypto,
3938 NL80211_MAX_NR_CIPHER_SUITES);
b23aa676
SO		 3939 if (err)
3940 return err;
3941 rtnl_lock();
3942
463d0183 3943 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
b23aa676
SO		 3944 if (err)
3945 goto unlock_rtnl;
3946
3947 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3948 err = -EOPNOTSUPP;
3949 goto out;
3950 }
3951
3952 if (!netif_running(dev)) {
3953 err = -ENETDOWN;
3954 goto out;
3955 }
3956
79c97e97 3957 wiphy = &rdev->wiphy;
b23aa676 3958
b23aa676
SO		 3959 if (info->attrs[NL80211_ATTR_MAC])
3960 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3961 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3962 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3963
3964 if (info->attrs[NL80211_ATTR_IE]) {
3965 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3966 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3967 }
3968
3969 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3970 connect.channel =
3971 ieee80211_get_channel(wiphy,
3972 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3973 if (!connect.channel ||
3974 connect.channel->flags & IEEE80211_CHAN_DISABLED) {
3975 err = -EINVAL;
3976 goto out;
3977 }
3978 }
3979
fffd0934
JB		 3980 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3981 connkeys = nl80211_parse_connkeys(rdev,
3982 info->attrs[NL80211_ATTR_KEYS]);
3983 if (IS_ERR(connkeys)) {
3984 err = PTR_ERR(connkeys);
3985 connkeys = NULL;
3986 goto out;
3987 }
3988 }
3989
3990 err = cfg80211_connect(rdev, dev, &connect, connkeys);
b23aa676
SO		 3991
3992out:
79c97e97 3993 cfg80211_unlock_rdev(rdev);
b23aa676
SO		 3994 dev_put(dev);
3995unlock_rtnl:
fffd0934
JB		 3996 if (err)
3997 kfree(connkeys);
b23aa676
SO		 3998 rtnl_unlock();
3999 return err;
4000}
4001
4002static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4003{
79c97e97 4004 struct cfg80211_registered_device *rdev;
b23aa676
SO		 4005 struct net_device *dev;
4006 int err;
4007 u16 reason;
4008
4009 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4010 reason = WLAN_REASON_DEAUTH_LEAVING;
4011 else
4012 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4013
4014 if (reason == 0)
4015 return -EINVAL;
4016
4017 rtnl_lock();
4018
463d0183 4019 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
b23aa676
SO		 4020 if (err)
4021 goto unlock_rtnl;
4022
4023 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4024 err = -EOPNOTSUPP;
4025 goto out;
4026 }
4027
4028 if (!netif_running(dev)) {
4029 err = -ENETDOWN;
4030 goto out;
4031 }
4032
79c97e97 4033 err = cfg80211_disconnect(rdev, dev, reason, true);
b23aa676
SO		 4034
4035out:
79c97e97 4036 cfg80211_unlock_rdev(rdev);
b23aa676
SO		 4037 dev_put(dev);
4038unlock_rtnl:
4039 rtnl_unlock();
4040 return err;
4041}
4042
463d0183
JB		 4043static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4044{
4045 struct cfg80211_registered_device *rdev;
4046 struct net *net;
4047 int err;
4048 u32 pid;
4049
4050 if (!info->attrs[NL80211_ATTR_PID])
4051 return -EINVAL;
4052
4053 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4054
4055 rtnl_lock();
4056
4057 rdev = cfg80211_get_dev_from_info(info);
4058 if (IS_ERR(rdev)) {
4059 err = PTR_ERR(rdev);
4060 goto out;
4061 }
4062
4063 net = get_net_ns_by_pid(pid);
4064 if (IS_ERR(net)) {
4065 err = PTR_ERR(net);
4066 goto out;
4067 }
4068
4069 err = 0;
4070
4071 /* check if anything to do */
4072 if (net_eq(wiphy_net(&rdev->wiphy), net))
4073 goto out_put_net;
4074
4075 err = cfg80211_switch_netns(rdev, net);
4076 out_put_net:
4077 put_net(net);
4078 out:
4079 cfg80211_unlock_rdev(rdev);
4080 rtnl_unlock();
4081 return err;
4082}
4083
55682965
JB		 4084static struct genl_ops nl80211_ops[] = {
4085 {
4086 .cmd = NL80211_CMD_GET_WIPHY,
4087 .doit = nl80211_get_wiphy,
4088 .dumpit = nl80211_dump_wiphy,
4089 .policy = nl80211_policy,
4090 /* can be retrieved by unprivileged users */
4091 },
4092 {
4093 .cmd = NL80211_CMD_SET_WIPHY,
4094 .doit = nl80211_set_wiphy,
4095 .policy = nl80211_policy,
4096 .flags = GENL_ADMIN_PERM,
4097 },
4098 {
4099 .cmd = NL80211_CMD_GET_INTERFACE,
4100 .doit = nl80211_get_interface,
4101 .dumpit = nl80211_dump_interface,
4102 .policy = nl80211_policy,
4103 /* can be retrieved by unprivileged users */
4104 },
4105 {
4106 .cmd = NL80211_CMD_SET_INTERFACE,
4107 .doit = nl80211_set_interface,
4108 .policy = nl80211_policy,
4109 .flags = GENL_ADMIN_PERM,
4110 },
4111 {
4112 .cmd = NL80211_CMD_NEW_INTERFACE,
4113 .doit = nl80211_new_interface,
4114 .policy = nl80211_policy,
4115 .flags = GENL_ADMIN_PERM,
4116 },
4117 {
4118 .cmd = NL80211_CMD_DEL_INTERFACE,
4119 .doit = nl80211_del_interface,
4120 .policy = nl80211_policy,
41ade00f
JB		 4121 .flags = GENL_ADMIN_PERM,
4122 },
4123 {
4124 .cmd = NL80211_CMD_GET_KEY,
4125 .doit = nl80211_get_key,
4126 .policy = nl80211_policy,
4127 .flags = GENL_ADMIN_PERM,
4128 },
4129 {
4130 .cmd = NL80211_CMD_SET_KEY,
4131 .doit = nl80211_set_key,
4132 .policy = nl80211_policy,
4133 .flags = GENL_ADMIN_PERM,
4134 },
4135 {
4136 .cmd = NL80211_CMD_NEW_KEY,
4137 .doit = nl80211_new_key,
4138 .policy = nl80211_policy,
4139 .flags = GENL_ADMIN_PERM,
4140 },
4141 {
4142 .cmd = NL80211_CMD_DEL_KEY,
4143 .doit = nl80211_del_key,
4144 .policy = nl80211_policy,
55682965
JB		 4145 .flags = GENL_ADMIN_PERM,
4146 },
ed1b6cc7
JB		 4147 {
4148 .cmd = NL80211_CMD_SET_BEACON,
4149 .policy = nl80211_policy,
4150 .flags = GENL_ADMIN_PERM,
4151 .doit = nl80211_addset_beacon,
4152 },
4153 {
4154 .cmd = NL80211_CMD_NEW_BEACON,
4155 .policy = nl80211_policy,
4156 .flags = GENL_ADMIN_PERM,
4157 .doit = nl80211_addset_beacon,
4158 },
4159 {
4160 .cmd = NL80211_CMD_DEL_BEACON,
4161 .policy = nl80211_policy,
4162 .flags = GENL_ADMIN_PERM,
4163 .doit = nl80211_del_beacon,
4164 },
5727ef1b
JB		 4165 {
4166 .cmd = NL80211_CMD_GET_STATION,
4167 .doit = nl80211_get_station,
2ec600d6 4168 .dumpit = nl80211_dump_station,
5727ef1b 4169 .policy = nl80211_policy,
5727ef1b
JB		 4170 },
4171 {
4172 .cmd = NL80211_CMD_SET_STATION,
4173 .doit = nl80211_set_station,
4174 .policy = nl80211_policy,
4175 .flags = GENL_ADMIN_PERM,
4176 },
4177 {
4178 .cmd = NL80211_CMD_NEW_STATION,
4179 .doit = nl80211_new_station,
4180 .policy = nl80211_policy,
4181 .flags = GENL_ADMIN_PERM,
4182 },
4183 {
4184 .cmd = NL80211_CMD_DEL_STATION,
4185 .doit = nl80211_del_station,
4186 .policy = nl80211_policy,
2ec600d6
LCC		 4187 .flags = GENL_ADMIN_PERM,
4188 },
4189 {
4190 .cmd = NL80211_CMD_GET_MPATH,
4191 .doit = nl80211_get_mpath,
4192 .dumpit = nl80211_dump_mpath,
4193 .policy = nl80211_policy,
4194 .flags = GENL_ADMIN_PERM,
4195 },
4196 {
4197 .cmd = NL80211_CMD_SET_MPATH,
4198 .doit = nl80211_set_mpath,
4199 .policy = nl80211_policy,
4200 .flags = GENL_ADMIN_PERM,
4201 },
4202 {
4203 .cmd = NL80211_CMD_NEW_MPATH,
4204 .doit = nl80211_new_mpath,
4205 .policy = nl80211_policy,
4206 .flags = GENL_ADMIN_PERM,
4207 },
4208 {
4209 .cmd = NL80211_CMD_DEL_MPATH,
4210 .doit = nl80211_del_mpath,
4211 .policy = nl80211_policy,
9f1ba906
JM		 4212 .flags = GENL_ADMIN_PERM,
4213 },
4214 {
4215 .cmd = NL80211_CMD_SET_BSS,
4216 .doit = nl80211_set_bss,
4217 .policy = nl80211_policy,
b2e1b302
LR		 4218 .flags = GENL_ADMIN_PERM,
4219 },
f130347c
LR		 4220 {
4221 .cmd = NL80211_CMD_GET_REG,
4222 .doit = nl80211_get_reg,
4223 .policy = nl80211_policy,
4224 /* can be retrieved by unprivileged users */
4225 },
b2e1b302
LR		 4226 {
4227 .cmd = NL80211_CMD_SET_REG,
4228 .doit = nl80211_set_reg,
4229 .policy = nl80211_policy,
4230 .flags = GENL_ADMIN_PERM,
4231 },
4232 {
4233 .cmd = NL80211_CMD_REQ_SET_REG,
4234 .doit = nl80211_req_set_reg,
4235 .policy = nl80211_policy,
93da9cc1 4236 .flags = GENL_ADMIN_PERM,
4237 },
4238 {
4239 .cmd = NL80211_CMD_GET_MESH_PARAMS,
4240 .doit = nl80211_get_mesh_params,
4241 .policy = nl80211_policy,
4242 /* can be retrieved by unprivileged users */
4243 },
4244 {
4245 .cmd = NL80211_CMD_SET_MESH_PARAMS,
4246 .doit = nl80211_set_mesh_params,
4247 .policy = nl80211_policy,
9aed3cc1
JM		 4248 .flags = GENL_ADMIN_PERM,
4249 },
2a519311
JB		 4250 {
4251 .cmd = NL80211_CMD_TRIGGER_SCAN,
4252 .doit = nl80211_trigger_scan,
4253 .policy = nl80211_policy,
4254 .flags = GENL_ADMIN_PERM,
4255 },
4256 {
4257 .cmd = NL80211_CMD_GET_SCAN,
4258 .policy = nl80211_policy,
4259 .dumpit = nl80211_dump_scan,
4260 },
636a5d36
JM		 4261 {
4262 .cmd = NL80211_CMD_AUTHENTICATE,
4263 .doit = nl80211_authenticate,
4264 .policy = nl80211_policy,
4265 .flags = GENL_ADMIN_PERM,
4266 },
4267 {
4268 .cmd = NL80211_CMD_ASSOCIATE,
4269 .doit = nl80211_associate,
4270 .policy = nl80211_policy,
4271 .flags = GENL_ADMIN_PERM,
4272 },
4273 {
4274 .cmd = NL80211_CMD_DEAUTHENTICATE,
4275 .doit = nl80211_deauthenticate,
4276 .policy = nl80211_policy,
4277 .flags = GENL_ADMIN_PERM,
4278 },
4279 {
4280 .cmd = NL80211_CMD_DISASSOCIATE,
4281 .doit = nl80211_disassociate,
4282 .policy = nl80211_policy,
4283 .flags = GENL_ADMIN_PERM,
4284 },
04a773ad
JB		 4285 {
4286 .cmd = NL80211_CMD_JOIN_IBSS,
4287 .doit = nl80211_join_ibss,
4288 .policy = nl80211_policy,
4289 .flags = GENL_ADMIN_PERM,
4290 },
4291 {
4292 .cmd = NL80211_CMD_LEAVE_IBSS,
4293 .doit = nl80211_leave_ibss,
4294 .policy = nl80211_policy,
4295 .flags = GENL_ADMIN_PERM,
4296 },
aff89a9b
JB		 4297#ifdef CONFIG_NL80211_TESTMODE
4298 {
4299 .cmd = NL80211_CMD_TESTMODE,
4300 .doit = nl80211_testmode_do,
4301 .policy = nl80211_policy,
4302 .flags = GENL_ADMIN_PERM,
4303 },
4304#endif
b23aa676
SO		 4305 {
4306 .cmd = NL80211_CMD_CONNECT,
4307 .doit = nl80211_connect,
4308 .policy = nl80211_policy,
4309 .flags = GENL_ADMIN_PERM,
4310 },
4311 {
4312 .cmd = NL80211_CMD_DISCONNECT,
4313 .doit = nl80211_disconnect,
4314 .policy = nl80211_policy,
4315 .flags = GENL_ADMIN_PERM,
4316 },
463d0183
JB		 4317 {
4318 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
4319 .doit = nl80211_wiphy_netns,
4320 .policy = nl80211_policy,
4321 .flags = GENL_ADMIN_PERM,
4322 },
55682965 4323};
6039f6d2
JM		 4324static struct genl_multicast_group nl80211_mlme_mcgrp = {
4325 .name = "mlme",
4326};
55682965
JB		 4327
4328/* multicast groups */
4329static struct genl_multicast_group nl80211_config_mcgrp = {
4330 .name = "config",
4331};
2a519311
JB		 4332static struct genl_multicast_group nl80211_scan_mcgrp = {
4333 .name = "scan",
4334};
73d54c9e
LR		 4335static struct genl_multicast_group nl80211_regulatory_mcgrp = {
4336 .name = "regulatory",
4337};
55682965
JB		 4338
4339/* notification functions */
4340
4341void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
4342{
4343 struct sk_buff *msg;
4344
fd2120ca 4345 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
55682965
JB		 4346 if (!msg)
4347 return;
4348
4349 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
4350 nlmsg_free(msg);
4351 return;
4352 }
4353
463d0183
JB		 4354 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4355 nl80211_config_mcgrp.id, GFP_KERNEL);
55682965
JB		 4356}
4357
362a415d
JB		 4358static int nl80211_add_scan_req(struct sk_buff *msg,
4359 struct cfg80211_registered_device *rdev)
4360{
4361 struct cfg80211_scan_request *req = rdev->scan_req;
4362 struct nlattr *nest;
4363 int i;
4364
667503dd
JB		 4365 ASSERT_RDEV_LOCK(rdev);
4366
362a415d
JB		 4367 if (WARN_ON(!req))
4368 return 0;
4369
4370 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
4371 if (!nest)
4372 goto nla_put_failure;
4373 for (i = 0; i < req->n_ssids; i++)
4374 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
4375 nla_nest_end(msg, nest);
4376
4377 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
4378 if (!nest)
4379 goto nla_put_failure;
4380 for (i = 0; i < req->n_channels; i++)
4381 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
4382 nla_nest_end(msg, nest);
4383
4384 if (req->ie)
4385 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
4386
4387 return 0;
4388 nla_put_failure:
4389 return -ENOBUFS;
4390}
4391
a538e2d5
JB		 4392static int nl80211_send_scan_msg(struct sk_buff *msg,
4393 struct cfg80211_registered_device *rdev,
4394 struct net_device *netdev,
4395 u32 pid, u32 seq, int flags,
4396 u32 cmd)
2a519311
JB		 4397{
4398 void *hdr;
4399
4400 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
4401 if (!hdr)
4402 return -1;
4403
b5850a7a 4404 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
2a519311
JB		 4405 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4406
362a415d
JB		 4407 /* ignore errors and send incomplete event anyway */
4408 nl80211_add_scan_req(msg, rdev);
2a519311
JB		 4409
4410 return genlmsg_end(msg, hdr);
4411
4412 nla_put_failure:
4413 genlmsg_cancel(msg, hdr);
4414 return -EMSGSIZE;
4415}
4416
a538e2d5
JB		 4417void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
4418 struct net_device *netdev)
4419{
4420 struct sk_buff *msg;
4421
4422 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
4423 if (!msg)
4424 return;
4425
4426 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4427 NL80211_CMD_TRIGGER_SCAN) < 0) {
4428 nlmsg_free(msg);
4429 return;
4430 }
4431
463d0183
JB		 4432 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4433 nl80211_scan_mcgrp.id, GFP_KERNEL);
a538e2d5
JB		 4434}
4435
2a519311
JB		 4436void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
4437 struct net_device *netdev)
4438{
4439 struct sk_buff *msg;
4440
fd2120ca 4441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2a519311
JB		 4442 if (!msg)
4443 return;
4444
a538e2d5
JB		 4445 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4446 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
2a519311
JB		 4447 nlmsg_free(msg);
4448 return;
4449 }
4450
463d0183
JB		 4451 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4452 nl80211_scan_mcgrp.id, GFP_KERNEL);
2a519311
JB		 4453}
4454
4455void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
4456 struct net_device *netdev)
4457{
4458 struct sk_buff *msg;
4459
fd2120ca 4460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2a519311
JB		 4461 if (!msg)
4462 return;
4463
a538e2d5
JB		 4464 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4465 NL80211_CMD_SCAN_ABORTED) < 0) {
2a519311
JB		 4466 nlmsg_free(msg);
4467 return;
4468 }
4469
463d0183
JB		 4470 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4471 nl80211_scan_mcgrp.id, GFP_KERNEL);
2a519311
JB		 4472}
4473
73d54c9e
LR		 4474/*
4475 * This can happen on global regulatory changes or device specific settings
4476 * based on custom world regulatory domains.
4477 */
4478void nl80211_send_reg_change_event(struct regulatory_request *request)
4479{
4480 struct sk_buff *msg;
4481 void *hdr;
4482
fd2120ca 4483 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
73d54c9e
LR		 4484 if (!msg)
4485 return;
4486
4487 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
4488 if (!hdr) {
4489 nlmsg_free(msg);
4490 return;
4491 }
4492
4493 /* Userspace can always count this one always being set */
4494 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
4495
4496 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
4497 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4498 NL80211_REGDOM_TYPE_WORLD);
4499 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
4500 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4501 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
4502 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
4503 request->intersect)
4504 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4505 NL80211_REGDOM_TYPE_INTERSECTION);
4506 else {
4507 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4508 NL80211_REGDOM_TYPE_COUNTRY);
4509 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
4510 }
4511
4512 if (wiphy_idx_valid(request->wiphy_idx))
4513 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
4514
4515 if (genlmsg_end(msg, hdr) < 0) {
4516 nlmsg_free(msg);
4517 return;
4518 }
4519
bc43b28c 4520 rcu_read_lock();
463d0183 4521 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
bc43b28c
JB		 4522 GFP_ATOMIC);
4523 rcu_read_unlock();
73d54c9e
LR		 4524
4525 return;
4526
4527nla_put_failure:
4528 genlmsg_cancel(msg, hdr);
4529 nlmsg_free(msg);
4530}
4531
6039f6d2
JM		 4532static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
4533 struct net_device *netdev,
4534 const u8 *buf, size_t len,
e6d6e342 4535 enum nl80211_commands cmd, gfp_t gfp)
6039f6d2
JM		 4536{
4537 struct sk_buff *msg;
4538 void *hdr;
4539
e6d6e342 4540 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6039f6d2
JM		 4541 if (!msg)
4542 return;
4543
4544 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
4545 if (!hdr) {
4546 nlmsg_free(msg);
4547 return;
4548 }
4549
4550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4551 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4552 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
4553
4554 if (genlmsg_end(msg, hdr) < 0) {
4555 nlmsg_free(msg);
4556 return;
4557 }
4558
463d0183
JB		 4559 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4560 nl80211_mlme_mcgrp.id, gfp);
6039f6d2
JM		 4561 return;
4562
4563 nla_put_failure:
4564 genlmsg_cancel(msg, hdr);
4565 nlmsg_free(msg);
4566}
4567
4568void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 4569 struct net_device *netdev, const u8 *buf,
4570 size_t len, gfp_t gfp)
6039f6d2
JM		 4571{
4572 nl80211_send_mlme_event(rdev, netdev, buf, len,
e6d6e342 4573 NL80211_CMD_AUTHENTICATE, gfp);
6039f6d2
JM		 4574}
4575
4576void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
4577 struct net_device *netdev, const u8 *buf,
e6d6e342 4578 size_t len, gfp_t gfp)
6039f6d2 4579{
e6d6e342
JB		 4580 nl80211_send_mlme_event(rdev, netdev, buf, len,
4581 NL80211_CMD_ASSOCIATE, gfp);
6039f6d2
JM		 4582}
4583
53b46b84 4584void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 4585 struct net_device *netdev, const u8 *buf,
4586 size_t len, gfp_t gfp)
6039f6d2
JM		 4587{
4588 nl80211_send_mlme_event(rdev, netdev, buf, len,
e6d6e342 4589 NL80211_CMD_DEAUTHENTICATE, gfp);
6039f6d2
JM		 4590}
4591
53b46b84
JM		 4592void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
4593 struct net_device *netdev, const u8 *buf,
e6d6e342 4594 size_t len, gfp_t gfp)
6039f6d2
JM		 4595{
4596 nl80211_send_mlme_event(rdev, netdev, buf, len,
e6d6e342 4597 NL80211_CMD_DISASSOCIATE, gfp);
6039f6d2
JM		 4598}
4599
1b06bb40
LR		 4600static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
4601 struct net_device *netdev, int cmd,
e6d6e342 4602 const u8 *addr, gfp_t gfp)
1965c853
JM		 4603{
4604 struct sk_buff *msg;
4605 void *hdr;
4606
e6d6e342 4607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
1965c853
JM		 4608 if (!msg)
4609 return;
4610
4611 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
4612 if (!hdr) {
4613 nlmsg_free(msg);
4614 return;
4615 }
4616
4617 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4618 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4619 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
4620 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4621
4622 if (genlmsg_end(msg, hdr) < 0) {
4623 nlmsg_free(msg);
4624 return;
4625 }
4626
463d0183
JB		 4627 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4628 nl80211_mlme_mcgrp.id, gfp);
1965c853
JM		 4629 return;
4630
4631 nla_put_failure:
4632 genlmsg_cancel(msg, hdr);
4633 nlmsg_free(msg);
4634}
4635
4636void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 4637 struct net_device *netdev, const u8 *addr,
4638 gfp_t gfp)
1965c853
JM		 4639{
4640 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
e6d6e342 4641 addr, gfp);
1965c853
JM		 4642}
4643
4644void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 4645 struct net_device *netdev, const u8 *addr,
4646 gfp_t gfp)
1965c853 4647{
e6d6e342
JB		 4648 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
4649 addr, gfp);
1965c853
JM		 4650}
4651
b23aa676
SO		 4652void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
4653 struct net_device *netdev, const u8 *bssid,
4654 const u8 *req_ie, size_t req_ie_len,
4655 const u8 *resp_ie, size_t resp_ie_len,
4656 u16 status, gfp_t gfp)
4657{
4658 struct sk_buff *msg;
4659 void *hdr;
4660
4661 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
4662 if (!msg)
4663 return;
4664
4665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
4666 if (!hdr) {
4667 nlmsg_free(msg);
4668 return;
4669 }
4670
4671 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4672 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4673 if (bssid)
4674 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
4675 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
4676 if (req_ie)
4677 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
4678 if (resp_ie)
4679 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
4680
4681 if (genlmsg_end(msg, hdr) < 0) {
4682 nlmsg_free(msg);
4683 return;
4684 }
4685
463d0183
JB		 4686 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4687 nl80211_mlme_mcgrp.id, gfp);
b23aa676
SO		 4688 return;
4689
4690 nla_put_failure:
4691 genlmsg_cancel(msg, hdr);
4692 nlmsg_free(msg);
4693
4694}
4695
4696void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
4697 struct net_device *netdev, const u8 *bssid,
4698 const u8 *req_ie, size_t req_ie_len,
4699 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
4700{
4701 struct sk_buff *msg;
4702 void *hdr;
4703
4704 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
4705 if (!msg)
4706 return;
4707
4708 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
4709 if (!hdr) {
4710 nlmsg_free(msg);
4711 return;
4712 }
4713
4714 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4715 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4716 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
4717 if (req_ie)
4718 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
4719 if (resp_ie)
4720 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
4721
4722 if (genlmsg_end(msg, hdr) < 0) {
4723 nlmsg_free(msg);
4724 return;
4725 }
4726
463d0183
JB		 4727 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4728 nl80211_mlme_mcgrp.id, gfp);
b23aa676
SO		 4729 return;
4730
4731 nla_put_failure:
4732 genlmsg_cancel(msg, hdr);
4733 nlmsg_free(msg);
4734
4735}
4736
4737void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
4738 struct net_device *netdev, u16 reason,
667503dd 4739 const u8 *ie, size_t ie_len, bool from_ap)
b23aa676
SO		 4740{
4741 struct sk_buff *msg;
4742 void *hdr;
4743
667503dd 4744 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
b23aa676
SO		 4745 if (!msg)
4746 return;
4747
4748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
4749 if (!hdr) {
4750 nlmsg_free(msg);
4751 return;
4752 }
4753
4754 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4756 if (from_ap && reason)
4757 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
4758 if (from_ap)
4759 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
4760 if (ie)
4761 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
4762
4763 if (genlmsg_end(msg, hdr) < 0) {
4764 nlmsg_free(msg);
4765 return;
4766 }
4767
463d0183
JB		 4768 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4769 nl80211_mlme_mcgrp.id, GFP_KERNEL);
b23aa676
SO		 4770 return;
4771
4772 nla_put_failure:
4773 genlmsg_cancel(msg, hdr);
4774 nlmsg_free(msg);
4775
4776}
4777
04a773ad
JB		 4778void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
4779 struct net_device *netdev, const u8 *bssid,
4780 gfp_t gfp)
4781{
4782 struct sk_buff *msg;
4783 void *hdr;
4784
fd2120ca 4785 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
04a773ad
JB		 4786 if (!msg)
4787 return;
4788
4789 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
4790 if (!hdr) {
4791 nlmsg_free(msg);
4792 return;
4793 }
4794
4795 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4796 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4797 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
4798
4799 if (genlmsg_end(msg, hdr) < 0) {
4800 nlmsg_free(msg);
4801 return;
4802 }
4803
463d0183
JB		 4804 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4805 nl80211_mlme_mcgrp.id, gfp);
04a773ad
JB		 4806 return;
4807
4808 nla_put_failure:
4809 genlmsg_cancel(msg, hdr);
4810 nlmsg_free(msg);
4811}
4812
a3b8b056
JM		 4813void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
4814 struct net_device *netdev, const u8 *addr,
4815 enum nl80211_key_type key_type, int key_id,
e6d6e342 4816 const u8 *tsc, gfp_t gfp)
a3b8b056
JM		 4817{
4818 struct sk_buff *msg;
4819 void *hdr;
4820
e6d6e342 4821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
a3b8b056
JM		 4822 if (!msg)
4823 return;
4824
4825 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
4826 if (!hdr) {
4827 nlmsg_free(msg);
4828 return;
4829 }
4830
4831 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4832 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4833 if (addr)
4834 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4835 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
4836 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
4837 if (tsc)
4838 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
4839
4840 if (genlmsg_end(msg, hdr) < 0) {
4841 nlmsg_free(msg);
4842 return;
4843 }
4844
463d0183
JB		 4845 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4846 nl80211_mlme_mcgrp.id, gfp);
a3b8b056
JM		 4847 return;
4848
4849 nla_put_failure:
4850 genlmsg_cancel(msg, hdr);
4851 nlmsg_free(msg);
4852}
4853
6bad8766
LR		 4854void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
4855 struct ieee80211_channel *channel_before,
4856 struct ieee80211_channel *channel_after)
4857{
4858 struct sk_buff *msg;
4859 void *hdr;
4860 struct nlattr *nl_freq;
4861
fd2120ca 4862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6bad8766
LR		 4863 if (!msg)
4864 return;
4865
4866 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
4867 if (!hdr) {
4868 nlmsg_free(msg);
4869 return;
4870 }
4871
4872 /*
4873 * Since we are applying the beacon hint to a wiphy we know its
4874 * wiphy_idx is valid
4875 */
4876 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
4877
4878 /* Before */
4879 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
4880 if (!nl_freq)
4881 goto nla_put_failure;
4882 if (nl80211_msg_put_channel(msg, channel_before))
4883 goto nla_put_failure;
4884 nla_nest_end(msg, nl_freq);
4885
4886 /* After */
4887 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
4888 if (!nl_freq)
4889 goto nla_put_failure;
4890 if (nl80211_msg_put_channel(msg, channel_after))
4891 goto nla_put_failure;
4892 nla_nest_end(msg, nl_freq);
4893
4894 if (genlmsg_end(msg, hdr) < 0) {
4895 nlmsg_free(msg);
4896 return;
4897 }
4898
463d0183
JB		 4899 rcu_read_lock();
4900 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
4901 GFP_ATOMIC);
4902 rcu_read_unlock();
6bad8766
LR		 4903
4904 return;
4905
4906nla_put_failure:
4907 genlmsg_cancel(msg, hdr);
4908 nlmsg_free(msg);
4909}
4910
55682965
JB		 4911/* initialisation/exit functions */
4912
4913int nl80211_init(void)
4914{
0d63cbb5 4915 int err;
55682965 4916
0d63cbb5
MM		 4917 err = genl_register_family_with_ops(&nl80211_fam,
4918 nl80211_ops, ARRAY_SIZE(nl80211_ops));
55682965
JB		 4919 if (err)
4920 return err;
4921
55682965
JB		 4922 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
4923 if (err)
4924 goto err_out;
4925
2a519311
JB		 4926 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
4927 if (err)
4928 goto err_out;
4929
73d54c9e
LR		 4930 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
4931 if (err)
4932 goto err_out;
4933
6039f6d2
JM		 4934 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
4935 if (err)
4936 goto err_out;
4937
aff89a9b
JB		 4938#ifdef CONFIG_NL80211_TESTMODE
4939 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
4940 if (err)
4941 goto err_out;
4942#endif
4943
55682965
JB		 4944 return 0;
4945 err_out:
4946 genl_unregister_family(&nl80211_fam);
4947 return err;
4948}
4949
4950void nl80211_exit(void)
4951{
4952 genl_unregister_family(&nl80211_fam);
4953}
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