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ath5k: preserve higher order bits when setting mac address
[linux-2.6/mini2440.git] / net / wireless / nl80211.c
blob9caee6022e3fc0ee0d8b5c4acc67f2a8092644a0
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/mutex.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <net/genetlink.h>
18 #include <net/cfg80211.h>
19 #include "core.h"
20 #include "nl80211.h"
21 #include "reg.h"
22
23 /* the netlink family */
24 static struct genl_family nl80211_fam = {
25 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
26 .name = "nl80211", /* have users key off the name instead */
27 .hdrsize = 0, /* no private header */
28 .version = 1, /* no particular meaning now */
29 .maxattr = NL80211_ATTR_MAX,
30 };
31
32 /* internal helper: get drv and dev */
33 static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
34 struct cfg80211_registered_device **drv,
35 struct net_device **dev)
36 {
37 int ifindex;
38
39 if (!attrs[NL80211_ATTR_IFINDEX])
40 return -EINVAL;
41
42 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
43 *dev = dev_get_by_index(&init_net, ifindex);
44 if (!*dev)
45 return -ENODEV;
46
47 *drv = cfg80211_get_dev_from_ifindex(ifindex);
48 if (IS_ERR(*drv)) {
49 dev_put(*dev);
50 return PTR_ERR(*drv);
51 }
52
53 return 0;
54 }
55
56 /* policy for the attributes */
57 static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
58 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
59 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
60 .len = BUS_ID_SIZE-1 },
61 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
62 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
63 [NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET] = { .type = NLA_U32 },
64
65 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
66 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
67 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
68
69 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
70
71 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
72 .len = WLAN_MAX_KEY_LEN },
73 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
74 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
75 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
76
77 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
78 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
79 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
80 .len = IEEE80211_MAX_DATA_LEN },
81 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
82 .len = IEEE80211_MAX_DATA_LEN },
83 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
84 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
85 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
86 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
87 .len = NL80211_MAX_SUPP_RATES },
88 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
89 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
90 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
91 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
92 .len = IEEE80211_MAX_MESH_ID_LEN },
93 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
94
95 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
96 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
97
98 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
99 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
100 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
101 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
102 .len = NL80211_MAX_SUPP_RATES },
103
104 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
105
106 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
107 .len = NL80211_HT_CAPABILITY_LEN },
108 };
109
110 /* message building helper */
111 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
112 int flags, u8 cmd)
113 {
114 /* since there is no private header just add the generic one */
115 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
116 }
117
118 /* netlink command implementations */
119
120 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
121 struct cfg80211_registered_device *dev)
122 {
123 void *hdr;
124 struct nlattr *nl_bands, *nl_band;
125 struct nlattr *nl_freqs, *nl_freq;
126 struct nlattr *nl_rates, *nl_rate;
127 struct nlattr *nl_modes;
128 enum ieee80211_band band;
129 struct ieee80211_channel *chan;
130 struct ieee80211_rate *rate;
131 int i;
132 u16 ifmodes = dev->wiphy.interface_modes;
133
134 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
135 if (!hdr)
136 return -1;
137
138 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
139 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
140
141 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
142 if (!nl_modes)
143 goto nla_put_failure;
144
145 i = 0;
146 while (ifmodes) {
147 if (ifmodes & 1)
148 NLA_PUT_FLAG(msg, i);
149 ifmodes >>= 1;
150 i++;
151 }
152
153 nla_nest_end(msg, nl_modes);
154
155 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
156 if (!nl_bands)
157 goto nla_put_failure;
158
159 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
160 if (!dev->wiphy.bands[band])
161 continue;
162
163 nl_band = nla_nest_start(msg, band);
164 if (!nl_band)
165 goto nla_put_failure;
166
167 /* add HT info */
168 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
169 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
170 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
171 &dev->wiphy.bands[band]->ht_cap.mcs);
172 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
173 dev->wiphy.bands[band]->ht_cap.cap);
174 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
175 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
176 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
177 dev->wiphy.bands[band]->ht_cap.ampdu_density);
178 }
179
180 /* add frequencies */
181 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
182 if (!nl_freqs)
183 goto nla_put_failure;
184
185 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
186 nl_freq = nla_nest_start(msg, i);
187 if (!nl_freq)
188 goto nla_put_failure;
189
190 chan = &dev->wiphy.bands[band]->channels[i];
191 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
192 chan->center_freq);
193
194 if (chan->flags & IEEE80211_CHAN_DISABLED)
195 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
196 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
197 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
198 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
199 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
200 if (chan->flags & IEEE80211_CHAN_RADAR)
201 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
202
203 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
204 DBM_TO_MBM(chan->max_power));
205
206 nla_nest_end(msg, nl_freq);
207 }
208
209 nla_nest_end(msg, nl_freqs);
210
211 /* add bitrates */
212 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
213 if (!nl_rates)
214 goto nla_put_failure;
215
216 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
217 nl_rate = nla_nest_start(msg, i);
218 if (!nl_rate)
219 goto nla_put_failure;
220
221 rate = &dev->wiphy.bands[band]->bitrates[i];
222 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
223 rate->bitrate);
224 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
225 NLA_PUT_FLAG(msg,
226 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
227
228 nla_nest_end(msg, nl_rate);
229 }
230
231 nla_nest_end(msg, nl_rates);
232
233 nla_nest_end(msg, nl_band);
234 }
235 nla_nest_end(msg, nl_bands);
236
237 return genlmsg_end(msg, hdr);
238
239 nla_put_failure:
240 genlmsg_cancel(msg, hdr);
241 return -EMSGSIZE;
242 }
243
244 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
245 {
246 int idx = 0;
247 int start = cb->args[0];
248 struct cfg80211_registered_device *dev;
249
250 mutex_lock(&cfg80211_drv_mutex);
251 list_for_each_entry(dev, &cfg80211_drv_list, list) {
252 if (++idx <= start)
253 continue;
254 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
255 cb->nlh->nlmsg_seq, NLM_F_MULTI,
256 dev) < 0) {
257 idx--;
258 break;
259 }
260 }
261 mutex_unlock(&cfg80211_drv_mutex);
262
263 cb->args[0] = idx;
264
265 return skb->len;
266 }
267
268 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
269 {
270 struct sk_buff *msg;
271 struct cfg80211_registered_device *dev;
272
273 dev = cfg80211_get_dev_from_info(info);
274 if (IS_ERR(dev))
275 return PTR_ERR(dev);
276
277 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
278 if (!msg)
279 goto out_err;
280
281 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
282 goto out_free;
283
284 cfg80211_put_dev(dev);
285
286 return genlmsg_unicast(msg, info->snd_pid);
287
288 out_free:
289 nlmsg_free(msg);
290 out_err:
291 cfg80211_put_dev(dev);
292 return -ENOBUFS;
293 }
294
295 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
296 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
297 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
298 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
299 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
300 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
301 };
302
303 static int parse_txq_params(struct nlattr *tb[],
304 struct ieee80211_txq_params *txq_params)
305 {
306 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
307 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
308 !tb[NL80211_TXQ_ATTR_AIFS])
309 return -EINVAL;
310
311 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
312 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
313 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
314 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
315 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
316
317 return 0;
318 }
319
320 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
321 {
322 struct cfg80211_registered_device *rdev;
323 int result = 0, rem_txq_params = 0;
324 struct nlattr *nl_txq_params;
325
326 rdev = cfg80211_get_dev_from_info(info);
327 if (IS_ERR(rdev))
328 return PTR_ERR(rdev);
329
330 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) {
331 result = cfg80211_dev_rename(
332 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
333 if (result)
334 goto bad_res;
335 }
336
337 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
338 struct ieee80211_txq_params txq_params;
339 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
340
341 if (!rdev->ops->set_txq_params) {
342 result = -EOPNOTSUPP;
343 goto bad_res;
344 }
345
346 nla_for_each_nested(nl_txq_params,
347 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
348 rem_txq_params) {
349 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
350 nla_data(nl_txq_params),
351 nla_len(nl_txq_params),
352 txq_params_policy);
353 result = parse_txq_params(tb, &txq_params);
354 if (result)
355 goto bad_res;
356
357 result = rdev->ops->set_txq_params(&rdev->wiphy,
358 &txq_params);
359 if (result)
360 goto bad_res;
361 }
362 }
363
364 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
365 enum nl80211_sec_chan_offset sec_chan_offset =
366 NL80211_SEC_CHAN_NO_HT;
367 struct ieee80211_channel *chan;
368 u32 freq, sec_freq;
369
370 if (!rdev->ops->set_channel) {
371 result = -EOPNOTSUPP;
372 goto bad_res;
373 }
374
375 if (info->attrs[NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET]) {
376 sec_chan_offset = nla_get_u32(
377 info->attrs[
378 NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET]);
379 if (sec_chan_offset != NL80211_SEC_CHAN_NO_HT &&
380 sec_chan_offset != NL80211_SEC_CHAN_DISABLED &&
381 sec_chan_offset != NL80211_SEC_CHAN_BELOW &&
382 sec_chan_offset != NL80211_SEC_CHAN_ABOVE) {
383 result = -EINVAL;
384 goto bad_res;
385 }
386 }
387
388 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
389 chan = ieee80211_get_channel(&rdev->wiphy, freq);
390 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
391 /* Primary channel not allowed */
392 result = -EINVAL;
393 goto bad_res;
394 }
395 if (sec_chan_offset == NL80211_SEC_CHAN_BELOW)
396 sec_freq = freq - 20;
397 else if (sec_chan_offset == NL80211_SEC_CHAN_ABOVE)
398 sec_freq = freq + 20;
399 else
400 sec_freq = 0;
401
402 if (sec_freq) {
403 struct ieee80211_channel *schan;
404 schan = ieee80211_get_channel(&rdev->wiphy, sec_freq);
405 if (!schan || schan->flags & IEEE80211_CHAN_DISABLED) {
406 /* Secondary channel not allowed */
407 result = -EINVAL;
408 goto bad_res;
409 }
410 }
411
412 result = rdev->ops->set_channel(&rdev->wiphy, chan,
413 sec_chan_offset);
414 if (result)
415 goto bad_res;
416 }
417
418
419 bad_res:
420 cfg80211_put_dev(rdev);
421 return result;
422 }
423
424
425 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
426 struct net_device *dev)
427 {
428 void *hdr;
429
430 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
431 if (!hdr)
432 return -1;
433
434 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
435 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
436 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
437 return genlmsg_end(msg, hdr);
438
439 nla_put_failure:
440 genlmsg_cancel(msg, hdr);
441 return -EMSGSIZE;
442 }
443
444 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
445 {
446 int wp_idx = 0;
447 int if_idx = 0;
448 int wp_start = cb->args[0];
449 int if_start = cb->args[1];
450 struct cfg80211_registered_device *dev;
451 struct wireless_dev *wdev;
452
453 mutex_lock(&cfg80211_drv_mutex);
454 list_for_each_entry(dev, &cfg80211_drv_list, list) {
455 if (wp_idx < wp_start) {
456 wp_idx++;
457 continue;
458 }
459 if_idx = 0;
460
461 mutex_lock(&dev->devlist_mtx);
462 list_for_each_entry(wdev, &dev->netdev_list, list) {
463 if (if_idx < if_start) {
464 if_idx++;
465 continue;
466 }
467 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
468 cb->nlh->nlmsg_seq, NLM_F_MULTI,
469 wdev->netdev) < 0) {
470 mutex_unlock(&dev->devlist_mtx);
471 goto out;
472 }
473 if_idx++;
474 }
475 mutex_unlock(&dev->devlist_mtx);
476
477 wp_idx++;
478 }
479 out:
480 mutex_unlock(&cfg80211_drv_mutex);
481
482 cb->args[0] = wp_idx;
483 cb->args[1] = if_idx;
484
485 return skb->len;
486 }
487
488 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
489 {
490 struct sk_buff *msg;
491 struct cfg80211_registered_device *dev;
492 struct net_device *netdev;
493 int err;
494
495 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
496 if (err)
497 return err;
498
499 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
500 if (!msg)
501 goto out_err;
502
503 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0)
504 goto out_free;
505
506 dev_put(netdev);
507 cfg80211_put_dev(dev);
508
509 return genlmsg_unicast(msg, info->snd_pid);
510
511 out_free:
512 nlmsg_free(msg);
513 out_err:
514 dev_put(netdev);
515 cfg80211_put_dev(dev);
516 return -ENOBUFS;
517 }
518
519 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
520 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
521 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
522 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
523 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
524 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
525 };
526
527 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
528 {
529 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
530 int flag;
531
532 *mntrflags = 0;
533
534 if (!nla)
535 return -EINVAL;
536
537 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
538 nla, mntr_flags_policy))
539 return -EINVAL;
540
541 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
542 if (flags[flag])
543 *mntrflags |= (1<<flag);
544
545 return 0;
546 }
547
548 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
549 {
550 struct cfg80211_registered_device *drv;
551 struct vif_params params;
552 int err, ifindex;
553 enum nl80211_iftype type;
554 struct net_device *dev;
555 u32 _flags, *flags = NULL;
556
557 memset(&params, 0, sizeof(params));
558
559 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
560 if (err)
561 return err;
562 ifindex = dev->ifindex;
563 type = dev->ieee80211_ptr->iftype;
564 dev_put(dev);
565
566 err = -EINVAL;
567 if (info->attrs[NL80211_ATTR_IFTYPE]) {
568 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
569 if (type > NL80211_IFTYPE_MAX)
570 goto unlock;
571 }
572
573 if (!drv->ops->change_virtual_intf ||
574 !(drv->wiphy.interface_modes & (1 << type))) {
575 err = -EOPNOTSUPP;
576 goto unlock;
577 }
578
579 if (info->attrs[NL80211_ATTR_MESH_ID]) {
580 if (type != NL80211_IFTYPE_MESH_POINT) {
581 err = -EINVAL;
582 goto unlock;
583 }
584 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
585 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
586 }
587
588 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
589 if (type != NL80211_IFTYPE_MONITOR) {
590 err = -EINVAL;
591 goto unlock;
592 }
593 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
594 &_flags);
595 if (!err)
596 flags = &_flags;
597 }
598 rtnl_lock();
599 err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
600 type, flags, &params);
601
602 dev = __dev_get_by_index(&init_net, ifindex);
603 WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));
604
605 rtnl_unlock();
606
607 unlock:
608 cfg80211_put_dev(drv);
609 return err;
610 }
611
612 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
613 {
614 struct cfg80211_registered_device *drv;
615 struct vif_params params;
616 int err;
617 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
618 u32 flags;
619
620 memset(&params, 0, sizeof(params));
621
622 if (!info->attrs[NL80211_ATTR_IFNAME])
623 return -EINVAL;
624
625 if (info->attrs[NL80211_ATTR_IFTYPE]) {
626 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
627 if (type > NL80211_IFTYPE_MAX)
628 return -EINVAL;
629 }
630
631 drv = cfg80211_get_dev_from_info(info);
632 if (IS_ERR(drv))
633 return PTR_ERR(drv);
634
635 if (!drv->ops->add_virtual_intf ||
636 !(drv->wiphy.interface_modes & (1 << type))) {
637 err = -EOPNOTSUPP;
638 goto unlock;
639 }
640
641 if (type == NL80211_IFTYPE_MESH_POINT &&
642 info->attrs[NL80211_ATTR_MESH_ID]) {
643 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
644 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
645 }
646
647 rtnl_lock();
648 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
649 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
650 &flags);
651 err = drv->ops->add_virtual_intf(&drv->wiphy,
652 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
653 type, err ? NULL : &flags, &params);
654 rtnl_unlock();
655
656
657 unlock:
658 cfg80211_put_dev(drv);
659 return err;
660 }
661
662 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
663 {
664 struct cfg80211_registered_device *drv;
665 int ifindex, err;
666 struct net_device *dev;
667
668 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
669 if (err)
670 return err;
671 ifindex = dev->ifindex;
672 dev_put(dev);
673
674 if (!drv->ops->del_virtual_intf) {
675 err = -EOPNOTSUPP;
676 goto out;
677 }
678
679 rtnl_lock();
680 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
681 rtnl_unlock();
682
683 out:
684 cfg80211_put_dev(drv);
685 return err;
686 }
687
688 struct get_key_cookie {
689 struct sk_buff *msg;
690 int error;
691 };
692
693 static void get_key_callback(void *c, struct key_params *params)
694 {
695 struct get_key_cookie *cookie = c;
696
697 if (params->key)
698 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
699 params->key_len, params->key);
700
701 if (params->seq)
702 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
703 params->seq_len, params->seq);
704
705 if (params->cipher)
706 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
707 params->cipher);
708
709 return;
710 nla_put_failure:
711 cookie->error = 1;
712 }
713
714 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
715 {
716 struct cfg80211_registered_device *drv;
717 int err;
718 struct net_device *dev;
719 u8 key_idx = 0;
720 u8 *mac_addr = NULL;
721 struct get_key_cookie cookie = {
722 .error = 0,
723 };
724 void *hdr;
725 struct sk_buff *msg;
726
727 if (info->attrs[NL80211_ATTR_KEY_IDX])
728 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
729
730 if (key_idx > 3)
731 return -EINVAL;
732
733 if (info->attrs[NL80211_ATTR_MAC])
734 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
735
736 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
737 if (err)
738 return err;
739
740 if (!drv->ops->get_key) {
741 err = -EOPNOTSUPP;
742 goto out;
743 }
744
745 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
746 if (!msg) {
747 err = -ENOMEM;
748 goto out;
749 }
750
751 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
752 NL80211_CMD_NEW_KEY);
753
754 if (IS_ERR(hdr)) {
755 err = PTR_ERR(hdr);
756 goto out;
757 }
758
759 cookie.msg = msg;
760
761 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
762 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
763 if (mac_addr)
764 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
765
766 rtnl_lock();
767 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
768 &cookie, get_key_callback);
769 rtnl_unlock();
770
771 if (err)
772 goto out;
773
774 if (cookie.error)
775 goto nla_put_failure;
776
777 genlmsg_end(msg, hdr);
778 err = genlmsg_unicast(msg, info->snd_pid);
779 goto out;
780
781 nla_put_failure:
782 err = -ENOBUFS;
783 nlmsg_free(msg);
784 out:
785 cfg80211_put_dev(drv);
786 dev_put(dev);
787 return err;
788 }
789
790 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
791 {
792 struct cfg80211_registered_device *drv;
793 int err;
794 struct net_device *dev;
795 u8 key_idx;
796
797 if (!info->attrs[NL80211_ATTR_KEY_IDX])
798 return -EINVAL;
799
800 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
801
802 if (key_idx > 3)
803 return -EINVAL;
804
805 /* currently only support setting default key */
806 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT])
807 return -EINVAL;
808
809 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
810 if (err)
811 return err;
812
813 if (!drv->ops->set_default_key) {
814 err = -EOPNOTSUPP;
815 goto out;
816 }
817
818 rtnl_lock();
819 err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx);
820 rtnl_unlock();
821
822 out:
823 cfg80211_put_dev(drv);
824 dev_put(dev);
825 return err;
826 }
827
828 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
829 {
830 struct cfg80211_registered_device *drv;
831 int err;
832 struct net_device *dev;
833 struct key_params params;
834 u8 key_idx = 0;
835 u8 *mac_addr = NULL;
836
837 memset(&params, 0, sizeof(params));
838
839 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
840 return -EINVAL;
841
842 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
843 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
844 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
845 }
846
847 if (info->attrs[NL80211_ATTR_KEY_IDX])
848 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
849
850 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
851
852 if (info->attrs[NL80211_ATTR_MAC])
853 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
854
855 if (key_idx > 3)
856 return -EINVAL;
857
858 /*
859 * Disallow pairwise keys with non-zero index unless it's WEP
860 * (because current deployments use pairwise WEP keys with
861 * non-zero indizes but 802.11i clearly specifies to use zero)
862 */
863 if (mac_addr && key_idx &&
864 params.cipher != WLAN_CIPHER_SUITE_WEP40 &&
865 params.cipher != WLAN_CIPHER_SUITE_WEP104)
866 return -EINVAL;
867
868 /* TODO: add definitions for the lengths to linux/ieee80211.h */
869 switch (params.cipher) {
870 case WLAN_CIPHER_SUITE_WEP40:
871 if (params.key_len != 5)
872 return -EINVAL;
873 break;
874 case WLAN_CIPHER_SUITE_TKIP:
875 if (params.key_len != 32)
876 return -EINVAL;
877 break;
878 case WLAN_CIPHER_SUITE_CCMP:
879 if (params.key_len != 16)
880 return -EINVAL;
881 break;
882 case WLAN_CIPHER_SUITE_WEP104:
883 if (params.key_len != 13)
884 return -EINVAL;
885 break;
886 default:
887 return -EINVAL;
888 }
889
890 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
891 if (err)
892 return err;
893
894 if (!drv->ops->add_key) {
895 err = -EOPNOTSUPP;
896 goto out;
897 }
898
899 rtnl_lock();
900 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
901 rtnl_unlock();
902
903 out:
904 cfg80211_put_dev(drv);
905 dev_put(dev);
906 return err;
907 }
908
909 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
910 {
911 struct cfg80211_registered_device *drv;
912 int err;
913 struct net_device *dev;
914 u8 key_idx = 0;
915 u8 *mac_addr = NULL;
916
917 if (info->attrs[NL80211_ATTR_KEY_IDX])
918 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
919
920 if (key_idx > 3)
921 return -EINVAL;
922
923 if (info->attrs[NL80211_ATTR_MAC])
924 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
925
926 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
927 if (err)
928 return err;
929
930 if (!drv->ops->del_key) {
931 err = -EOPNOTSUPP;
932 goto out;
933 }
934
935 rtnl_lock();
936 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
937 rtnl_unlock();
938
939 out:
940 cfg80211_put_dev(drv);
941 dev_put(dev);
942 return err;
943 }
944
945 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
946 {
947 int (*call)(struct wiphy *wiphy, struct net_device *dev,
948 struct beacon_parameters *info);
949 struct cfg80211_registered_device *drv;
950 int err;
951 struct net_device *dev;
952 struct beacon_parameters params;
953 int haveinfo = 0;
954
955 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
956 if (err)
957 return err;
958
959 switch (info->genlhdr->cmd) {
960 case NL80211_CMD_NEW_BEACON:
961 /* these are required for NEW_BEACON */
962 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
963 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
964 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
965 err = -EINVAL;
966 goto out;
967 }
968
969 call = drv->ops->add_beacon;
970 break;
971 case NL80211_CMD_SET_BEACON:
972 call = drv->ops->set_beacon;
973 break;
974 default:
975 WARN_ON(1);
976 err = -EOPNOTSUPP;
977 goto out;
978 }
979
980 if (!call) {
981 err = -EOPNOTSUPP;
982 goto out;
983 }
984
985 memset(&params, 0, sizeof(params));
986
987 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
988 params.interval =
989 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
990 haveinfo = 1;
991 }
992
993 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
994 params.dtim_period =
995 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
996 haveinfo = 1;
997 }
998
999 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1000 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1001 params.head_len =
1002 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1003 haveinfo = 1;
1004 }
1005
1006 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1007 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1008 params.tail_len =
1009 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1010 haveinfo = 1;
1011 }
1012
1013 if (!haveinfo) {
1014 err = -EINVAL;
1015 goto out;
1016 }
1017
1018 rtnl_lock();
1019 err = call(&drv->wiphy, dev, &params);
1020 rtnl_unlock();
1021
1022 out:
1023 cfg80211_put_dev(drv);
1024 dev_put(dev);
1025 return err;
1026 }
1027
1028 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1029 {
1030 struct cfg80211_registered_device *drv;
1031 int err;
1032 struct net_device *dev;
1033
1034 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1035 if (err)
1036 return err;
1037
1038 if (!drv->ops->del_beacon) {
1039 err = -EOPNOTSUPP;
1040 goto out;
1041 }
1042
1043 rtnl_lock();
1044 err = drv->ops->del_beacon(&drv->wiphy, dev);
1045 rtnl_unlock();
1046
1047 out:
1048 cfg80211_put_dev(drv);
1049 dev_put(dev);
1050 return err;
1051 }
1052
1053 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1054 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1055 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1056 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1057 };
1058
1059 static int parse_station_flags(struct nlattr *nla, u32 *staflags)
1060 {
1061 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1062 int flag;
1063
1064 *staflags = 0;
1065
1066 if (!nla)
1067 return 0;
1068
1069 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1070 nla, sta_flags_policy))
1071 return -EINVAL;
1072
1073 *staflags = STATION_FLAG_CHANGED;
1074
1075 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1076 if (flags[flag])
1077 *staflags |= (1<<flag);
1078
1079 return 0;
1080 }
1081
1082 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1083 int flags, struct net_device *dev,
1084 u8 *mac_addr, struct station_info *sinfo)
1085 {
1086 void *hdr;
1087 struct nlattr *sinfoattr;
1088
1089 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1090 if (!hdr)
1091 return -1;
1092
1093 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1094 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1095
1096 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1097 if (!sinfoattr)
1098 goto nla_put_failure;
1099 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1100 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1101 sinfo->inactive_time);
1102 if (sinfo->filled & STATION_INFO_RX_BYTES)
1103 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1104 sinfo->rx_bytes);
1105 if (sinfo->filled & STATION_INFO_TX_BYTES)
1106 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1107 sinfo->tx_bytes);
1108 if (sinfo->filled & STATION_INFO_LLID)
1109 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1110 sinfo->llid);
1111 if (sinfo->filled & STATION_INFO_PLID)
1112 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1113 sinfo->plid);
1114 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1115 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1116 sinfo->plink_state);
1117
1118 nla_nest_end(msg, sinfoattr);
1119
1120 return genlmsg_end(msg, hdr);
1121
1122 nla_put_failure:
1123 genlmsg_cancel(msg, hdr);
1124 return -EMSGSIZE;
1125 }
1126
1127 static int nl80211_dump_station(struct sk_buff *skb,
1128 struct netlink_callback *cb)
1129 {
1130 struct station_info sinfo;
1131 struct cfg80211_registered_device *dev;
1132 struct net_device *netdev;
1133 u8 mac_addr[ETH_ALEN];
1134 int ifidx = cb->args[0];
1135 int sta_idx = cb->args[1];
1136 int err;
1137
1138 if (!ifidx) {
1139 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1140 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1141 nl80211_policy);
1142 if (err)
1143 return err;
1144
1145 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1146 return -EINVAL;
1147
1148 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1149 if (!ifidx)
1150 return -EINVAL;
1151 }
1152
1153 netdev = dev_get_by_index(&init_net, ifidx);
1154 if (!netdev)
1155 return -ENODEV;
1156
1157 dev = cfg80211_get_dev_from_ifindex(ifidx);
1158 if (IS_ERR(dev)) {
1159 err = PTR_ERR(dev);
1160 goto out_put_netdev;
1161 }
1162
1163 if (!dev->ops->dump_station) {
1164 err = -ENOSYS;
1165 goto out_err;
1166 }
1167
1168 rtnl_lock();
1169
1170 while (1) {
1171 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1172 mac_addr, &sinfo);
1173 if (err == -ENOENT)
1174 break;
1175 if (err)
1176 goto out_err_rtnl;
1177
1178 if (nl80211_send_station(skb,
1179 NETLINK_CB(cb->skb).pid,
1180 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1181 netdev, mac_addr,
1182 &sinfo) < 0)
1183 goto out;
1184
1185 sta_idx++;
1186 }
1187
1188
1189 out:
1190 cb->args[1] = sta_idx;
1191 err = skb->len;
1192 out_err_rtnl:
1193 rtnl_unlock();
1194 out_err:
1195 cfg80211_put_dev(dev);
1196 out_put_netdev:
1197 dev_put(netdev);
1198
1199 return err;
1200 }
1201
1202 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1203 {
1204 struct cfg80211_registered_device *drv;
1205 int err;
1206 struct net_device *dev;
1207 struct station_info sinfo;
1208 struct sk_buff *msg;
1209 u8 *mac_addr = NULL;
1210
1211 memset(&sinfo, 0, sizeof(sinfo));
1212
1213 if (!info->attrs[NL80211_ATTR_MAC])
1214 return -EINVAL;
1215
1216 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1217
1218 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1219 if (err)
1220 return err;
1221
1222 if (!drv->ops->get_station) {
1223 err = -EOPNOTSUPP;
1224 goto out;
1225 }
1226
1227 rtnl_lock();
1228 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1229 rtnl_unlock();
1230
1231 if (err)
1232 goto out;
1233
1234 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1235 if (!msg)
1236 goto out;
1237
1238 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1239 dev, mac_addr, &sinfo) < 0)
1240 goto out_free;
1241
1242 err = genlmsg_unicast(msg, info->snd_pid);
1243 goto out;
1244
1245 out_free:
1246 nlmsg_free(msg);
1247
1248 out:
1249 cfg80211_put_dev(drv);
1250 dev_put(dev);
1251 return err;
1252 }
1253
1254 /*
1255 * Get vlan interface making sure it is on the right wiphy.
1256 */
1257 static int get_vlan(struct nlattr *vlanattr,
1258 struct cfg80211_registered_device *rdev,
1259 struct net_device **vlan)
1260 {
1261 *vlan = NULL;
1262
1263 if (vlanattr) {
1264 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1265 if (!*vlan)
1266 return -ENODEV;
1267 if (!(*vlan)->ieee80211_ptr)
1268 return -EINVAL;
1269 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1270 return -EINVAL;
1271 }
1272 return 0;
1273 }
1274
1275 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1276 {
1277 struct cfg80211_registered_device *drv;
1278 int err;
1279 struct net_device *dev;
1280 struct station_parameters params;
1281 u8 *mac_addr = NULL;
1282
1283 memset(&params, 0, sizeof(params));
1284
1285 params.listen_interval = -1;
1286
1287 if (info->attrs[NL80211_ATTR_STA_AID])
1288 return -EINVAL;
1289
1290 if (!info->attrs[NL80211_ATTR_MAC])
1291 return -EINVAL;
1292
1293 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1294
1295 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1296 params.supported_rates =
1297 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1298 params.supported_rates_len =
1299 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1300 }
1301
1302 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1303 params.listen_interval =
1304 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1305
1306 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1307 params.ht_capa =
1308 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1309
1310 if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
1311 &params.station_flags))
1312 return -EINVAL;
1313
1314 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1315 params.plink_action =
1316 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1317
1318 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1319 if (err)
1320 return err;
1321
1322 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1323 if (err)
1324 goto out;
1325
1326 if (!drv->ops->change_station) {
1327 err = -EOPNOTSUPP;
1328 goto out;
1329 }
1330
1331 rtnl_lock();
1332 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
1333 rtnl_unlock();
1334
1335 out:
1336 if (params.vlan)
1337 dev_put(params.vlan);
1338 cfg80211_put_dev(drv);
1339 dev_put(dev);
1340 return err;
1341 }
1342
1343 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1344 {
1345 struct cfg80211_registered_device *drv;
1346 int err;
1347 struct net_device *dev;
1348 struct station_parameters params;
1349 u8 *mac_addr = NULL;
1350
1351 memset(&params, 0, sizeof(params));
1352
1353 if (!info->attrs[NL80211_ATTR_MAC])
1354 return -EINVAL;
1355
1356 if (!info->attrs[NL80211_ATTR_STA_AID])
1357 return -EINVAL;
1358
1359 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1360 return -EINVAL;
1361
1362 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1363 return -EINVAL;
1364
1365 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1366 params.supported_rates =
1367 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1368 params.supported_rates_len =
1369 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1370 params.listen_interval =
1371 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1372 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1373 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1374 params.ht_capa =
1375 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1376
1377 if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
1378 &params.station_flags))
1379 return -EINVAL;
1380
1381 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1382 if (err)
1383 return err;
1384
1385 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1386 if (err)
1387 goto out;
1388
1389 if (!drv->ops->add_station) {
1390 err = -EOPNOTSUPP;
1391 goto out;
1392 }
1393
1394 rtnl_lock();
1395 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
1396 rtnl_unlock();
1397
1398 out:
1399 if (params.vlan)
1400 dev_put(params.vlan);
1401 cfg80211_put_dev(drv);
1402 dev_put(dev);
1403 return err;
1404 }
1405
1406 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1407 {
1408 struct cfg80211_registered_device *drv;
1409 int err;
1410 struct net_device *dev;
1411 u8 *mac_addr = NULL;
1412
1413 if (info->attrs[NL80211_ATTR_MAC])
1414 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1415
1416 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1417 if (err)
1418 return err;
1419
1420 if (!drv->ops->del_station) {
1421 err = -EOPNOTSUPP;
1422 goto out;
1423 }
1424
1425 rtnl_lock();
1426 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1427 rtnl_unlock();
1428
1429 out:
1430 cfg80211_put_dev(drv);
1431 dev_put(dev);
1432 return err;
1433 }
1434
1435 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1436 int flags, struct net_device *dev,
1437 u8 *dst, u8 *next_hop,
1438 struct mpath_info *pinfo)
1439 {
1440 void *hdr;
1441 struct nlattr *pinfoattr;
1442
1443 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1444 if (!hdr)
1445 return -1;
1446
1447 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1448 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1449 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1450
1451 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1452 if (!pinfoattr)
1453 goto nla_put_failure;
1454 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1455 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1456 pinfo->frame_qlen);
1457 if (pinfo->filled & MPATH_INFO_DSN)
1458 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1459 pinfo->dsn);
1460 if (pinfo->filled & MPATH_INFO_METRIC)
1461 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1462 pinfo->metric);
1463 if (pinfo->filled & MPATH_INFO_EXPTIME)
1464 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1465 pinfo->exptime);
1466 if (pinfo->filled & MPATH_INFO_FLAGS)
1467 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1468 pinfo->flags);
1469 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1470 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1471 pinfo->discovery_timeout);
1472 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1473 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1474 pinfo->discovery_retries);
1475
1476 nla_nest_end(msg, pinfoattr);
1477
1478 return genlmsg_end(msg, hdr);
1479
1480 nla_put_failure:
1481 genlmsg_cancel(msg, hdr);
1482 return -EMSGSIZE;
1483 }
1484
1485 static int nl80211_dump_mpath(struct sk_buff *skb,
1486 struct netlink_callback *cb)
1487 {
1488 struct mpath_info pinfo;
1489 struct cfg80211_registered_device *dev;
1490 struct net_device *netdev;
1491 u8 dst[ETH_ALEN];
1492 u8 next_hop[ETH_ALEN];
1493 int ifidx = cb->args[0];
1494 int path_idx = cb->args[1];
1495 int err;
1496
1497 if (!ifidx) {
1498 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1499 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1500 nl80211_policy);
1501 if (err)
1502 return err;
1503
1504 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1505 return -EINVAL;
1506
1507 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1508 if (!ifidx)
1509 return -EINVAL;
1510 }
1511
1512 netdev = dev_get_by_index(&init_net, ifidx);
1513 if (!netdev)
1514 return -ENODEV;
1515
1516 dev = cfg80211_get_dev_from_ifindex(ifidx);
1517 if (IS_ERR(dev)) {
1518 err = PTR_ERR(dev);
1519 goto out_put_netdev;
1520 }
1521
1522 if (!dev->ops->dump_mpath) {
1523 err = -ENOSYS;
1524 goto out_err;
1525 }
1526
1527 rtnl_lock();
1528
1529 while (1) {
1530 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
1531 dst, next_hop, &pinfo);
1532 if (err == -ENOENT)
1533 break;
1534 if (err)
1535 goto out_err_rtnl;
1536
1537 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
1538 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1539 netdev, dst, next_hop,
1540 &pinfo) < 0)
1541 goto out;
1542
1543 path_idx++;
1544 }
1545
1546
1547 out:
1548 cb->args[1] = path_idx;
1549 err = skb->len;
1550 out_err_rtnl:
1551 rtnl_unlock();
1552 out_err:
1553 cfg80211_put_dev(dev);
1554 out_put_netdev:
1555 dev_put(netdev);
1556
1557 return err;
1558 }
1559
1560 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
1561 {
1562 struct cfg80211_registered_device *drv;
1563 int err;
1564 struct net_device *dev;
1565 struct mpath_info pinfo;
1566 struct sk_buff *msg;
1567 u8 *dst = NULL;
1568 u8 next_hop[ETH_ALEN];
1569
1570 memset(&pinfo, 0, sizeof(pinfo));
1571
1572 if (!info->attrs[NL80211_ATTR_MAC])
1573 return -EINVAL;
1574
1575 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1576
1577 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1578 if (err)
1579 return err;
1580
1581 if (!drv->ops->get_mpath) {
1582 err = -EOPNOTSUPP;
1583 goto out;
1584 }
1585
1586 rtnl_lock();
1587 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
1588 rtnl_unlock();
1589
1590 if (err)
1591 goto out;
1592
1593 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1594 if (!msg)
1595 goto out;
1596
1597 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
1598 dev, dst, next_hop, &pinfo) < 0)
1599 goto out_free;
1600
1601 err = genlmsg_unicast(msg, info->snd_pid);
1602 goto out;
1603
1604 out_free:
1605 nlmsg_free(msg);
1606
1607 out:
1608 cfg80211_put_dev(drv);
1609 dev_put(dev);
1610 return err;
1611 }
1612
1613 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
1614 {
1615 struct cfg80211_registered_device *drv;
1616 int err;
1617 struct net_device *dev;
1618 u8 *dst = NULL;
1619 u8 *next_hop = NULL;
1620
1621 if (!info->attrs[NL80211_ATTR_MAC])
1622 return -EINVAL;
1623
1624 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
1625 return -EINVAL;
1626
1627 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1628 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
1629
1630 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1631 if (err)
1632 return err;
1633
1634 if (!drv->ops->change_mpath) {
1635 err = -EOPNOTSUPP;
1636 goto out;
1637 }
1638
1639 rtnl_lock();
1640 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
1641 rtnl_unlock();
1642
1643 out:
1644 cfg80211_put_dev(drv);
1645 dev_put(dev);
1646 return err;
1647 }
1648 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
1649 {
1650 struct cfg80211_registered_device *drv;
1651 int err;
1652 struct net_device *dev;
1653 u8 *dst = NULL;
1654 u8 *next_hop = NULL;
1655
1656 if (!info->attrs[NL80211_ATTR_MAC])
1657 return -EINVAL;
1658
1659 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
1660 return -EINVAL;
1661
1662 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1663 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
1664
1665 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1666 if (err)
1667 return err;
1668
1669 if (!drv->ops->add_mpath) {
1670 err = -EOPNOTSUPP;
1671 goto out;
1672 }
1673
1674 rtnl_lock();
1675 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
1676 rtnl_unlock();
1677
1678 out:
1679 cfg80211_put_dev(drv);
1680 dev_put(dev);
1681 return err;
1682 }
1683
1684 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
1685 {
1686 struct cfg80211_registered_device *drv;
1687 int err;
1688 struct net_device *dev;
1689 u8 *dst = NULL;
1690
1691 if (info->attrs[NL80211_ATTR_MAC])
1692 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1693
1694 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1695 if (err)
1696 return err;
1697
1698 if (!drv->ops->del_mpath) {
1699 err = -EOPNOTSUPP;
1700 goto out;
1701 }
1702
1703 rtnl_lock();
1704 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
1705 rtnl_unlock();
1706
1707 out:
1708 cfg80211_put_dev(drv);
1709 dev_put(dev);
1710 return err;
1711 }
1712
1713 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
1714 {
1715 struct cfg80211_registered_device *drv;
1716 int err;
1717 struct net_device *dev;
1718 struct bss_parameters params;
1719
1720 memset(&params, 0, sizeof(params));
1721 /* default to not changing parameters */
1722 params.use_cts_prot = -1;
1723 params.use_short_preamble = -1;
1724 params.use_short_slot_time = -1;
1725
1726 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
1727 params.use_cts_prot =
1728 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
1729 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
1730 params.use_short_preamble =
1731 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
1732 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
1733 params.use_short_slot_time =
1734 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
1735 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
1736 params.basic_rates =
1737 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
1738 params.basic_rates_len =
1739 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
1740 }
1741
1742 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1743 if (err)
1744 return err;
1745
1746 if (!drv->ops->change_bss) {
1747 err = -EOPNOTSUPP;
1748 goto out;
1749 }
1750
1751 rtnl_lock();
1752 err = drv->ops->change_bss(&drv->wiphy, dev, &params);
1753 rtnl_unlock();
1754
1755 out:
1756 cfg80211_put_dev(drv);
1757 dev_put(dev);
1758 return err;
1759 }
1760
1761 static const struct nla_policy
1762 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
1763 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1764 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1765 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1766 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1767 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1768 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1769 };
1770
1771 static int parse_reg_rule(struct nlattr *tb[],
1772 struct ieee80211_reg_rule *reg_rule)
1773 {
1774 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
1775 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
1776
1777 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
1778 return -EINVAL;
1779 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
1780 return -EINVAL;
1781 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
1782 return -EINVAL;
1783 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1784 return -EINVAL;
1785 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1786 return -EINVAL;
1787
1788 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
1789
1790 freq_range->start_freq_khz =
1791 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
1792 freq_range->end_freq_khz =
1793 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
1794 freq_range->max_bandwidth_khz =
1795 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
1796
1797 power_rule->max_eirp =
1798 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
1799
1800 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
1801 power_rule->max_antenna_gain =
1802 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
1803
1804 return 0;
1805 }
1806
1807 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
1808 {
1809 int r;
1810 char *data = NULL;
1811
1812 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
1813 return -EINVAL;
1814
1815 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
1816
1817 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
1818 /* We ignore world regdom requests with the old regdom setup */
1819 if (is_world_regdom(data))
1820 return -EINVAL;
1821 #endif
1822 mutex_lock(&cfg80211_drv_mutex);
1823 r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY);
1824 mutex_unlock(&cfg80211_drv_mutex);
1825 return r;
1826 }
1827
1828 static int nl80211_get_mesh_params(struct sk_buff *skb,
1829 struct genl_info *info)
1830 {
1831 struct cfg80211_registered_device *drv;
1832 struct mesh_config cur_params;
1833 int err;
1834 struct net_device *dev;
1835 void *hdr;
1836 struct nlattr *pinfoattr;
1837 struct sk_buff *msg;
1838
1839 /* Look up our device */
1840 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1841 if (err)
1842 return err;
1843
1844 /* Get the mesh params */
1845 rtnl_lock();
1846 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
1847 rtnl_unlock();
1848 if (err)
1849 goto out;
1850
1851 /* Draw up a netlink message to send back */
1852 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1853 if (!msg) {
1854 err = -ENOBUFS;
1855 goto out;
1856 }
1857 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1858 NL80211_CMD_GET_MESH_PARAMS);
1859 if (!hdr)
1860 goto nla_put_failure;
1861 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
1862 if (!pinfoattr)
1863 goto nla_put_failure;
1864 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1865 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
1866 cur_params.dot11MeshRetryTimeout);
1867 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
1868 cur_params.dot11MeshConfirmTimeout);
1869 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
1870 cur_params.dot11MeshHoldingTimeout);
1871 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
1872 cur_params.dot11MeshMaxPeerLinks);
1873 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
1874 cur_params.dot11MeshMaxRetries);
1875 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
1876 cur_params.dot11MeshTTL);
1877 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
1878 cur_params.auto_open_plinks);
1879 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
1880 cur_params.dot11MeshHWMPmaxPREQretries);
1881 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
1882 cur_params.path_refresh_time);
1883 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
1884 cur_params.min_discovery_timeout);
1885 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
1886 cur_params.dot11MeshHWMPactivePathTimeout);
1887 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
1888 cur_params.dot11MeshHWMPpreqMinInterval);
1889 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1890 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
1891 nla_nest_end(msg, pinfoattr);
1892 genlmsg_end(msg, hdr);
1893 err = genlmsg_unicast(msg, info->snd_pid);
1894 goto out;
1895
1896 nla_put_failure:
1897 genlmsg_cancel(msg, hdr);
1898 err = -EMSGSIZE;
1899 out:
1900 /* Cleanup */
1901 cfg80211_put_dev(drv);
1902 dev_put(dev);
1903 return err;
1904 }
1905
1906 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
1907 do {\
1908 if (table[attr_num]) {\
1909 cfg.param = nla_fn(table[attr_num]); \
1910 mask |= (1 << (attr_num - 1)); \
1911 } \
1912 } while (0);\
1913
1914 static struct nla_policy
1915 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
1916 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
1917 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
1918 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
1919 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
1920 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
1921 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
1922 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
1923
1924 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
1925 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
1926 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
1927 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
1928 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
1929 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
1930 };
1931
1932 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
1933 {
1934 int err;
1935 u32 mask;
1936 struct cfg80211_registered_device *drv;
1937 struct net_device *dev;
1938 struct mesh_config cfg;
1939 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
1940 struct nlattr *parent_attr;
1941
1942 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
1943 if (!parent_attr)
1944 return -EINVAL;
1945 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
1946 parent_attr, nl80211_meshconf_params_policy))
1947 return -EINVAL;
1948
1949 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1950 if (err)
1951 return err;
1952
1953 /* This makes sure that there aren't more than 32 mesh config
1954 * parameters (otherwise our bitfield scheme would not work.) */
1955 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
1956
1957 /* Fill in the params struct */
1958 mask = 0;
1959 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
1960 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
1961 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
1962 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
1963 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
1964 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
1965 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
1966 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
1967 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
1968 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
1969 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
1970 mask, NL80211_MESHCONF_TTL, nla_get_u8);
1971 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
1972 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
1973 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
1974 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
1975 nla_get_u8);
1976 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
1977 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
1978 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
1979 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
1980 nla_get_u16);
1981 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
1982 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
1983 nla_get_u32);
1984 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
1985 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
1986 nla_get_u16);
1987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
1988 dot11MeshHWMPnetDiameterTraversalTime,
1989 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1990 nla_get_u16);
1991
1992 /* Apply changes */
1993 rtnl_lock();
1994 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
1995 rtnl_unlock();
1996
1997 /* cleanup */
1998 cfg80211_put_dev(drv);
1999 dev_put(dev);
2000 return err;
2001 }
2002
2003 #undef FILL_IN_MESH_PARAM_IF_SET
2004
2005 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2006 {
2007 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2008 struct nlattr *nl_reg_rule;
2009 char *alpha2 = NULL;
2010 int rem_reg_rules = 0, r = 0;
2011 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2012 struct ieee80211_regdomain *rd = NULL;
2013
2014 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2015 return -EINVAL;
2016
2017 if (!info->attrs[NL80211_ATTR_REG_RULES])
2018 return -EINVAL;
2019
2020 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2021
2022 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2023 rem_reg_rules) {
2024 num_rules++;
2025 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2026 goto bad_reg;
2027 }
2028
2029 if (!reg_is_valid_request(alpha2))
2030 return -EINVAL;
2031
2032 size_of_regd = sizeof(struct ieee80211_regdomain) +
2033 (num_rules * sizeof(struct ieee80211_reg_rule));
2034
2035 rd = kzalloc(size_of_regd, GFP_KERNEL);
2036 if (!rd)
2037 return -ENOMEM;
2038
2039 rd->n_reg_rules = num_rules;
2040 rd->alpha2[0] = alpha2[0];
2041 rd->alpha2[1] = alpha2[1];
2042
2043 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2044 rem_reg_rules) {
2045 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2046 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2047 reg_rule_policy);
2048 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2049 if (r)
2050 goto bad_reg;
2051
2052 rule_idx++;
2053
2054 if (rule_idx > NL80211_MAX_SUPP_REG_RULES)
2055 goto bad_reg;
2056 }
2057
2058 BUG_ON(rule_idx != num_rules);
2059
2060 mutex_lock(&cfg80211_drv_mutex);
2061 r = set_regdom(rd);
2062 mutex_unlock(&cfg80211_drv_mutex);
2063 return r;
2064
2065 bad_reg:
2066 kfree(rd);
2067 return -EINVAL;
2068 }
2069
2070 static struct genl_ops nl80211_ops[] = {
2071 {
2072 .cmd = NL80211_CMD_GET_WIPHY,
2073 .doit = nl80211_get_wiphy,
2074 .dumpit = nl80211_dump_wiphy,
2075 .policy = nl80211_policy,
2076 /* can be retrieved by unprivileged users */
2077 },
2078 {
2079 .cmd = NL80211_CMD_SET_WIPHY,
2080 .doit = nl80211_set_wiphy,
2081 .policy = nl80211_policy,
2082 .flags = GENL_ADMIN_PERM,
2083 },
2084 {
2085 .cmd = NL80211_CMD_GET_INTERFACE,
2086 .doit = nl80211_get_interface,
2087 .dumpit = nl80211_dump_interface,
2088 .policy = nl80211_policy,
2089 /* can be retrieved by unprivileged users */
2090 },
2091 {
2092 .cmd = NL80211_CMD_SET_INTERFACE,
2093 .doit = nl80211_set_interface,
2094 .policy = nl80211_policy,
2095 .flags = GENL_ADMIN_PERM,
2096 },
2097 {
2098 .cmd = NL80211_CMD_NEW_INTERFACE,
2099 .doit = nl80211_new_interface,
2100 .policy = nl80211_policy,
2101 .flags = GENL_ADMIN_PERM,
2102 },
2103 {
2104 .cmd = NL80211_CMD_DEL_INTERFACE,
2105 .doit = nl80211_del_interface,
2106 .policy = nl80211_policy,
2107 .flags = GENL_ADMIN_PERM,
2108 },
2109 {
2110 .cmd = NL80211_CMD_GET_KEY,
2111 .doit = nl80211_get_key,
2112 .policy = nl80211_policy,
2113 .flags = GENL_ADMIN_PERM,
2114 },
2115 {
2116 .cmd = NL80211_CMD_SET_KEY,
2117 .doit = nl80211_set_key,
2118 .policy = nl80211_policy,
2119 .flags = GENL_ADMIN_PERM,
2120 },
2121 {
2122 .cmd = NL80211_CMD_NEW_KEY,
2123 .doit = nl80211_new_key,
2124 .policy = nl80211_policy,
2125 .flags = GENL_ADMIN_PERM,
2126 },
2127 {
2128 .cmd = NL80211_CMD_DEL_KEY,
2129 .doit = nl80211_del_key,
2130 .policy = nl80211_policy,
2131 .flags = GENL_ADMIN_PERM,
2132 },
2133 {
2134 .cmd = NL80211_CMD_SET_BEACON,
2135 .policy = nl80211_policy,
2136 .flags = GENL_ADMIN_PERM,
2137 .doit = nl80211_addset_beacon,
2138 },
2139 {
2140 .cmd = NL80211_CMD_NEW_BEACON,
2141 .policy = nl80211_policy,
2142 .flags = GENL_ADMIN_PERM,
2143 .doit = nl80211_addset_beacon,
2144 },
2145 {
2146 .cmd = NL80211_CMD_DEL_BEACON,
2147 .policy = nl80211_policy,
2148 .flags = GENL_ADMIN_PERM,
2149 .doit = nl80211_del_beacon,
2150 },
2151 {
2152 .cmd = NL80211_CMD_GET_STATION,
2153 .doit = nl80211_get_station,
2154 .dumpit = nl80211_dump_station,
2155 .policy = nl80211_policy,
2156 .flags = GENL_ADMIN_PERM,
2157 },
2158 {
2159 .cmd = NL80211_CMD_SET_STATION,
2160 .doit = nl80211_set_station,
2161 .policy = nl80211_policy,
2162 .flags = GENL_ADMIN_PERM,
2163 },
2164 {
2165 .cmd = NL80211_CMD_NEW_STATION,
2166 .doit = nl80211_new_station,
2167 .policy = nl80211_policy,
2168 .flags = GENL_ADMIN_PERM,
2169 },
2170 {
2171 .cmd = NL80211_CMD_DEL_STATION,
2172 .doit = nl80211_del_station,
2173 .policy = nl80211_policy,
2174 .flags = GENL_ADMIN_PERM,
2175 },
2176 {
2177 .cmd = NL80211_CMD_GET_MPATH,
2178 .doit = nl80211_get_mpath,
2179 .dumpit = nl80211_dump_mpath,
2180 .policy = nl80211_policy,
2181 .flags = GENL_ADMIN_PERM,
2182 },
2183 {
2184 .cmd = NL80211_CMD_SET_MPATH,
2185 .doit = nl80211_set_mpath,
2186 .policy = nl80211_policy,
2187 .flags = GENL_ADMIN_PERM,
2188 },
2189 {
2190 .cmd = NL80211_CMD_NEW_MPATH,
2191 .doit = nl80211_new_mpath,
2192 .policy = nl80211_policy,
2193 .flags = GENL_ADMIN_PERM,
2194 },
2195 {
2196 .cmd = NL80211_CMD_DEL_MPATH,
2197 .doit = nl80211_del_mpath,
2198 .policy = nl80211_policy,
2199 .flags = GENL_ADMIN_PERM,
2200 },
2201 {
2202 .cmd = NL80211_CMD_SET_BSS,
2203 .doit = nl80211_set_bss,
2204 .policy = nl80211_policy,
2205 .flags = GENL_ADMIN_PERM,
2206 },
2207 {
2208 .cmd = NL80211_CMD_SET_REG,
2209 .doit = nl80211_set_reg,
2210 .policy = nl80211_policy,
2211 .flags = GENL_ADMIN_PERM,
2212 },
2213 {
2214 .cmd = NL80211_CMD_REQ_SET_REG,
2215 .doit = nl80211_req_set_reg,
2216 .policy = nl80211_policy,
2217 .flags = GENL_ADMIN_PERM,
2218 },
2219 {
2220 .cmd = NL80211_CMD_GET_MESH_PARAMS,
2221 .doit = nl80211_get_mesh_params,
2222 .policy = nl80211_policy,
2223 /* can be retrieved by unprivileged users */
2224 },
2225 {
2226 .cmd = NL80211_CMD_SET_MESH_PARAMS,
2227 .doit = nl80211_set_mesh_params,
2228 .policy = nl80211_policy,
2229 .flags = GENL_ADMIN_PERM,
2230 },
2231 };
2232
2233 /* multicast groups */
2234 static struct genl_multicast_group nl80211_config_mcgrp = {
2235 .name = "config",
2236 };
2237
2238 /* notification functions */
2239
2240 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
2241 {
2242 struct sk_buff *msg;
2243
2244 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
2245 if (!msg)
2246 return;
2247
2248 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
2249 nlmsg_free(msg);
2250 return;
2251 }
2252
2253 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
2254 }
2255
2256 /* initialisation/exit functions */
2257
2258 int nl80211_init(void)
2259 {
2260 int err, i;
2261
2262 err = genl_register_family(&nl80211_fam);
2263 if (err)
2264 return err;
2265
2266 for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) {
2267 err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]);
2268 if (err)
2269 goto err_out;
2270 }
2271
2272 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
2273 if (err)
2274 goto err_out;
2275
2276 return 0;
2277 err_out:
2278 genl_unregister_family(&nl80211_fam);
2279 return err;
2280 }
2281
2282 void nl80211_exit(void)
2283 {
2284 genl_unregister_family(&nl80211_fam);
2285 }
Support for the Chinese Samsung S3C2440 based development boards