Commit | Line | Data |
---|---|---|
55682965 JB |
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> | |
2a519311 | 17 | #include <linux/etherdevice.h> |
55682965 JB |
18 | #include <net/genetlink.h> |
19 | #include <net/cfg80211.h> | |
20 | #include "core.h" | |
21 | #include "nl80211.h" | |
b2e1b302 | 22 | #include "reg.h" |
55682965 JB |
23 | |
24 | /* the netlink family */ | |
25 | static struct genl_family nl80211_fam = { | |
26 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ | |
27 | .name = "nl80211", /* have users key off the name instead */ | |
28 | .hdrsize = 0, /* no private header */ | |
29 | .version = 1, /* no particular meaning now */ | |
30 | .maxattr = NL80211_ATTR_MAX, | |
31 | }; | |
32 | ||
33 | /* internal helper: get drv and dev */ | |
bba95fef | 34 | static int get_drv_dev_by_info_ifindex(struct nlattr **attrs, |
55682965 JB |
35 | struct cfg80211_registered_device **drv, |
36 | struct net_device **dev) | |
37 | { | |
38 | int ifindex; | |
39 | ||
bba95fef | 40 | if (!attrs[NL80211_ATTR_IFINDEX]) |
55682965 JB |
41 | return -EINVAL; |
42 | ||
bba95fef | 43 | ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); |
55682965 JB |
44 | *dev = dev_get_by_index(&init_net, ifindex); |
45 | if (!*dev) | |
46 | return -ENODEV; | |
47 | ||
48 | *drv = cfg80211_get_dev_from_ifindex(ifindex); | |
49 | if (IS_ERR(*drv)) { | |
50 | dev_put(*dev); | |
51 | return PTR_ERR(*drv); | |
52 | } | |
53 | ||
54 | return 0; | |
55 | } | |
56 | ||
57 | /* policy for the attributes */ | |
58 | static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { | |
59 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, | |
60 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, | |
61 | .len = BUS_ID_SIZE-1 }, | |
31888487 | 62 | [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, |
72bdcf34 | 63 | [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, |
094d05dc | 64 | [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, |
55682965 JB |
65 | |
66 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, | |
67 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, | |
68 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, | |
41ade00f JB |
69 | |
70 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, | |
71 | ||
72 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, | |
73 | .len = WLAN_MAX_KEY_LEN }, | |
74 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, | |
75 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, | |
76 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, | |
ed1b6cc7 JB |
77 | |
78 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, | |
79 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, | |
80 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, | |
81 | .len = IEEE80211_MAX_DATA_LEN }, | |
82 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, | |
83 | .len = IEEE80211_MAX_DATA_LEN }, | |
5727ef1b JB |
84 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, |
85 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, | |
86 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, | |
87 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, | |
88 | .len = NL80211_MAX_SUPP_RATES }, | |
2ec600d6 | 89 | [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, |
5727ef1b | 90 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, |
0a9542ee | 91 | [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, |
2ec600d6 LCC |
92 | [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, |
93 | .len = IEEE80211_MAX_MESH_ID_LEN }, | |
94 | [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, | |
9f1ba906 | 95 | |
b2e1b302 LR |
96 | [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, |
97 | [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, | |
98 | ||
9f1ba906 JM |
99 | [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, |
100 | [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, | |
101 | [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, | |
90c97a04 JM |
102 | [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, |
103 | .len = NL80211_MAX_SUPP_RATES }, | |
36aedc90 | 104 | |
93da9cc1 | 105 | [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED }, |
106 | ||
36aedc90 JM |
107 | [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, |
108 | .len = NL80211_HT_CAPABILITY_LEN }, | |
9aed3cc1 JM |
109 | |
110 | [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, | |
111 | [NL80211_ATTR_IE] = { .type = NLA_BINARY, | |
112 | .len = IEEE80211_MAX_DATA_LEN }, | |
2a519311 JB |
113 | [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, |
114 | [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, | |
55682965 JB |
115 | }; |
116 | ||
117 | /* message building helper */ | |
118 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, | |
119 | int flags, u8 cmd) | |
120 | { | |
121 | /* since there is no private header just add the generic one */ | |
122 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); | |
123 | } | |
124 | ||
125 | /* netlink command implementations */ | |
126 | ||
127 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
128 | struct cfg80211_registered_device *dev) | |
129 | { | |
130 | void *hdr; | |
ee688b00 JB |
131 | struct nlattr *nl_bands, *nl_band; |
132 | struct nlattr *nl_freqs, *nl_freq; | |
133 | struct nlattr *nl_rates, *nl_rate; | |
f59ac048 | 134 | struct nlattr *nl_modes; |
ee688b00 JB |
135 | enum ieee80211_band band; |
136 | struct ieee80211_channel *chan; | |
137 | struct ieee80211_rate *rate; | |
138 | int i; | |
f59ac048 | 139 | u16 ifmodes = dev->wiphy.interface_modes; |
55682965 JB |
140 | |
141 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); | |
142 | if (!hdr) | |
143 | return -1; | |
144 | ||
145 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); | |
146 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); | |
2a519311 JB |
147 | NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, |
148 | dev->wiphy.max_scan_ssids); | |
ee688b00 | 149 | |
f59ac048 LR |
150 | nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); |
151 | if (!nl_modes) | |
152 | goto nla_put_failure; | |
153 | ||
154 | i = 0; | |
155 | while (ifmodes) { | |
156 | if (ifmodes & 1) | |
157 | NLA_PUT_FLAG(msg, i); | |
158 | ifmodes >>= 1; | |
159 | i++; | |
160 | } | |
161 | ||
162 | nla_nest_end(msg, nl_modes); | |
163 | ||
ee688b00 JB |
164 | nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); |
165 | if (!nl_bands) | |
166 | goto nla_put_failure; | |
167 | ||
168 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
169 | if (!dev->wiphy.bands[band]) | |
170 | continue; | |
171 | ||
172 | nl_band = nla_nest_start(msg, band); | |
173 | if (!nl_band) | |
174 | goto nla_put_failure; | |
175 | ||
d51626df JB |
176 | /* add HT info */ |
177 | if (dev->wiphy.bands[band]->ht_cap.ht_supported) { | |
178 | NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET, | |
179 | sizeof(dev->wiphy.bands[band]->ht_cap.mcs), | |
180 | &dev->wiphy.bands[band]->ht_cap.mcs); | |
181 | NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA, | |
182 | dev->wiphy.bands[band]->ht_cap.cap); | |
183 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, | |
184 | dev->wiphy.bands[band]->ht_cap.ampdu_factor); | |
185 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, | |
186 | dev->wiphy.bands[band]->ht_cap.ampdu_density); | |
187 | } | |
188 | ||
ee688b00 JB |
189 | /* add frequencies */ |
190 | nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); | |
191 | if (!nl_freqs) | |
192 | goto nla_put_failure; | |
193 | ||
194 | for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { | |
195 | nl_freq = nla_nest_start(msg, i); | |
196 | if (!nl_freq) | |
197 | goto nla_put_failure; | |
198 | ||
199 | chan = &dev->wiphy.bands[band]->channels[i]; | |
200 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, | |
201 | chan->center_freq); | |
202 | ||
203 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
204 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); | |
205 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
206 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); | |
207 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) | |
208 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); | |
209 | if (chan->flags & IEEE80211_CHAN_RADAR) | |
210 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); | |
211 | ||
bf8c1ac6 JM |
212 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, |
213 | DBM_TO_MBM(chan->max_power)); | |
e2f367f2 | 214 | |
ee688b00 JB |
215 | nla_nest_end(msg, nl_freq); |
216 | } | |
217 | ||
218 | nla_nest_end(msg, nl_freqs); | |
219 | ||
220 | /* add bitrates */ | |
221 | nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); | |
222 | if (!nl_rates) | |
223 | goto nla_put_failure; | |
224 | ||
225 | for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { | |
226 | nl_rate = nla_nest_start(msg, i); | |
227 | if (!nl_rate) | |
228 | goto nla_put_failure; | |
229 | ||
230 | rate = &dev->wiphy.bands[band]->bitrates[i]; | |
231 | NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, | |
232 | rate->bitrate); | |
233 | if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) | |
234 | NLA_PUT_FLAG(msg, | |
235 | NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); | |
236 | ||
237 | nla_nest_end(msg, nl_rate); | |
238 | } | |
239 | ||
240 | nla_nest_end(msg, nl_rates); | |
241 | ||
242 | nla_nest_end(msg, nl_band); | |
243 | } | |
244 | nla_nest_end(msg, nl_bands); | |
245 | ||
55682965 JB |
246 | return genlmsg_end(msg, hdr); |
247 | ||
248 | nla_put_failure: | |
bc3ed28c TG |
249 | genlmsg_cancel(msg, hdr); |
250 | return -EMSGSIZE; | |
55682965 JB |
251 | } |
252 | ||
253 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) | |
254 | { | |
255 | int idx = 0; | |
256 | int start = cb->args[0]; | |
257 | struct cfg80211_registered_device *dev; | |
258 | ||
259 | mutex_lock(&cfg80211_drv_mutex); | |
260 | list_for_each_entry(dev, &cfg80211_drv_list, list) { | |
b4637271 | 261 | if (++idx <= start) |
55682965 JB |
262 | continue; |
263 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, | |
264 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
b4637271 JV |
265 | dev) < 0) { |
266 | idx--; | |
55682965 | 267 | break; |
b4637271 | 268 | } |
55682965 JB |
269 | } |
270 | mutex_unlock(&cfg80211_drv_mutex); | |
271 | ||
272 | cb->args[0] = idx; | |
273 | ||
274 | return skb->len; | |
275 | } | |
276 | ||
277 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) | |
278 | { | |
279 | struct sk_buff *msg; | |
280 | struct cfg80211_registered_device *dev; | |
281 | ||
282 | dev = cfg80211_get_dev_from_info(info); | |
283 | if (IS_ERR(dev)) | |
284 | return PTR_ERR(dev); | |
285 | ||
286 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
287 | if (!msg) | |
288 | goto out_err; | |
289 | ||
290 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) | |
291 | goto out_free; | |
292 | ||
293 | cfg80211_put_dev(dev); | |
294 | ||
295 | return genlmsg_unicast(msg, info->snd_pid); | |
296 | ||
297 | out_free: | |
298 | nlmsg_free(msg); | |
299 | out_err: | |
300 | cfg80211_put_dev(dev); | |
301 | return -ENOBUFS; | |
302 | } | |
303 | ||
31888487 JM |
304 | static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { |
305 | [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, | |
306 | [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, | |
307 | [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, | |
308 | [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, | |
309 | [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, | |
310 | }; | |
311 | ||
312 | static int parse_txq_params(struct nlattr *tb[], | |
313 | struct ieee80211_txq_params *txq_params) | |
314 | { | |
315 | if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] || | |
316 | !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || | |
317 | !tb[NL80211_TXQ_ATTR_AIFS]) | |
318 | return -EINVAL; | |
319 | ||
320 | txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]); | |
321 | txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); | |
322 | txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); | |
323 | txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); | |
324 | txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
55682965 JB |
329 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) |
330 | { | |
331 | struct cfg80211_registered_device *rdev; | |
31888487 JM |
332 | int result = 0, rem_txq_params = 0; |
333 | struct nlattr *nl_txq_params; | |
55682965 JB |
334 | |
335 | rdev = cfg80211_get_dev_from_info(info); | |
336 | if (IS_ERR(rdev)) | |
337 | return PTR_ERR(rdev); | |
338 | ||
31888487 JM |
339 | if (info->attrs[NL80211_ATTR_WIPHY_NAME]) { |
340 | result = cfg80211_dev_rename( | |
341 | rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); | |
342 | if (result) | |
343 | goto bad_res; | |
344 | } | |
345 | ||
346 | if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { | |
347 | struct ieee80211_txq_params txq_params; | |
348 | struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; | |
349 | ||
350 | if (!rdev->ops->set_txq_params) { | |
351 | result = -EOPNOTSUPP; | |
352 | goto bad_res; | |
353 | } | |
354 | ||
355 | nla_for_each_nested(nl_txq_params, | |
356 | info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], | |
357 | rem_txq_params) { | |
358 | nla_parse(tb, NL80211_TXQ_ATTR_MAX, | |
359 | nla_data(nl_txq_params), | |
360 | nla_len(nl_txq_params), | |
361 | txq_params_policy); | |
362 | result = parse_txq_params(tb, &txq_params); | |
363 | if (result) | |
364 | goto bad_res; | |
365 | ||
366 | result = rdev->ops->set_txq_params(&rdev->wiphy, | |
367 | &txq_params); | |
368 | if (result) | |
369 | goto bad_res; | |
370 | } | |
371 | } | |
55682965 | 372 | |
72bdcf34 | 373 | if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
094d05dc | 374 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 375 | struct ieee80211_channel *chan; |
306d6112 | 376 | struct ieee80211_sta_ht_cap *ht_cap; |
72bdcf34 JM |
377 | u32 freq, sec_freq; |
378 | ||
379 | if (!rdev->ops->set_channel) { | |
380 | result = -EOPNOTSUPP; | |
381 | goto bad_res; | |
382 | } | |
383 | ||
306d6112 JB |
384 | result = -EINVAL; |
385 | ||
094d05dc S |
386 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { |
387 | channel_type = nla_get_u32(info->attrs[ | |
388 | NL80211_ATTR_WIPHY_CHANNEL_TYPE]); | |
389 | if (channel_type != NL80211_CHAN_NO_HT && | |
390 | channel_type != NL80211_CHAN_HT20 && | |
391 | channel_type != NL80211_CHAN_HT40PLUS && | |
392 | channel_type != NL80211_CHAN_HT40MINUS) | |
72bdcf34 | 393 | goto bad_res; |
72bdcf34 JM |
394 | } |
395 | ||
396 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); | |
397 | chan = ieee80211_get_channel(&rdev->wiphy, freq); | |
306d6112 JB |
398 | |
399 | /* Primary channel not allowed */ | |
400 | if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) | |
72bdcf34 | 401 | goto bad_res; |
306d6112 | 402 | |
094d05dc | 403 | if (channel_type == NL80211_CHAN_HT40MINUS) |
72bdcf34 | 404 | sec_freq = freq - 20; |
094d05dc | 405 | else if (channel_type == NL80211_CHAN_HT40PLUS) |
72bdcf34 JM |
406 | sec_freq = freq + 20; |
407 | else | |
408 | sec_freq = 0; | |
409 | ||
306d6112 JB |
410 | ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap; |
411 | ||
412 | /* no HT capabilities */ | |
094d05dc | 413 | if (channel_type != NL80211_CHAN_NO_HT && |
306d6112 JB |
414 | !ht_cap->ht_supported) |
415 | goto bad_res; | |
416 | ||
72bdcf34 JM |
417 | if (sec_freq) { |
418 | struct ieee80211_channel *schan; | |
306d6112 JB |
419 | |
420 | /* no 40 MHz capabilities */ | |
421 | if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) || | |
422 | (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)) | |
423 | goto bad_res; | |
424 | ||
72bdcf34 | 425 | schan = ieee80211_get_channel(&rdev->wiphy, sec_freq); |
306d6112 JB |
426 | |
427 | /* Secondary channel not allowed */ | |
428 | if (!schan || schan->flags & IEEE80211_CHAN_DISABLED) | |
72bdcf34 | 429 | goto bad_res; |
72bdcf34 JM |
430 | } |
431 | ||
432 | result = rdev->ops->set_channel(&rdev->wiphy, chan, | |
094d05dc | 433 | channel_type); |
72bdcf34 JM |
434 | if (result) |
435 | goto bad_res; | |
436 | } | |
437 | ||
438 | ||
306d6112 | 439 | bad_res: |
55682965 JB |
440 | cfg80211_put_dev(rdev); |
441 | return result; | |
442 | } | |
443 | ||
444 | ||
445 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
446 | struct net_device *dev) | |
447 | { | |
448 | void *hdr; | |
449 | ||
450 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); | |
451 | if (!hdr) | |
452 | return -1; | |
453 | ||
454 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
455 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); | |
60719ffd | 456 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); |
55682965 JB |
457 | return genlmsg_end(msg, hdr); |
458 | ||
459 | nla_put_failure: | |
bc3ed28c TG |
460 | genlmsg_cancel(msg, hdr); |
461 | return -EMSGSIZE; | |
55682965 JB |
462 | } |
463 | ||
464 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) | |
465 | { | |
466 | int wp_idx = 0; | |
467 | int if_idx = 0; | |
468 | int wp_start = cb->args[0]; | |
469 | int if_start = cb->args[1]; | |
470 | struct cfg80211_registered_device *dev; | |
471 | struct wireless_dev *wdev; | |
472 | ||
473 | mutex_lock(&cfg80211_drv_mutex); | |
474 | list_for_each_entry(dev, &cfg80211_drv_list, list) { | |
bba95fef JB |
475 | if (wp_idx < wp_start) { |
476 | wp_idx++; | |
55682965 | 477 | continue; |
bba95fef | 478 | } |
55682965 JB |
479 | if_idx = 0; |
480 | ||
481 | mutex_lock(&dev->devlist_mtx); | |
482 | list_for_each_entry(wdev, &dev->netdev_list, list) { | |
bba95fef JB |
483 | if (if_idx < if_start) { |
484 | if_idx++; | |
55682965 | 485 | continue; |
bba95fef | 486 | } |
55682965 JB |
487 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, |
488 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
bba95fef JB |
489 | wdev->netdev) < 0) { |
490 | mutex_unlock(&dev->devlist_mtx); | |
491 | goto out; | |
492 | } | |
493 | if_idx++; | |
55682965 JB |
494 | } |
495 | mutex_unlock(&dev->devlist_mtx); | |
bba95fef JB |
496 | |
497 | wp_idx++; | |
55682965 | 498 | } |
bba95fef | 499 | out: |
55682965 JB |
500 | mutex_unlock(&cfg80211_drv_mutex); |
501 | ||
502 | cb->args[0] = wp_idx; | |
503 | cb->args[1] = if_idx; | |
504 | ||
505 | return skb->len; | |
506 | } | |
507 | ||
508 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) | |
509 | { | |
510 | struct sk_buff *msg; | |
511 | struct cfg80211_registered_device *dev; | |
512 | struct net_device *netdev; | |
513 | int err; | |
514 | ||
bba95fef | 515 | err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev); |
55682965 JB |
516 | if (err) |
517 | return err; | |
518 | ||
519 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
520 | if (!msg) | |
521 | goto out_err; | |
522 | ||
523 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) | |
524 | goto out_free; | |
525 | ||
526 | dev_put(netdev); | |
527 | cfg80211_put_dev(dev); | |
528 | ||
529 | return genlmsg_unicast(msg, info->snd_pid); | |
530 | ||
531 | out_free: | |
532 | nlmsg_free(msg); | |
533 | out_err: | |
534 | dev_put(netdev); | |
535 | cfg80211_put_dev(dev); | |
536 | return -ENOBUFS; | |
537 | } | |
538 | ||
66f7ac50 MW |
539 | static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { |
540 | [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, | |
541 | [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, | |
542 | [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, | |
543 | [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, | |
544 | [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, | |
545 | }; | |
546 | ||
547 | static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) | |
548 | { | |
549 | struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; | |
550 | int flag; | |
551 | ||
552 | *mntrflags = 0; | |
553 | ||
554 | if (!nla) | |
555 | return -EINVAL; | |
556 | ||
557 | if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, | |
558 | nla, mntr_flags_policy)) | |
559 | return -EINVAL; | |
560 | ||
561 | for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) | |
562 | if (flags[flag]) | |
563 | *mntrflags |= (1<<flag); | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
55682965 JB |
568 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
569 | { | |
570 | struct cfg80211_registered_device *drv; | |
2ec600d6 | 571 | struct vif_params params; |
55682965 JB |
572 | int err, ifindex; |
573 | enum nl80211_iftype type; | |
574 | struct net_device *dev; | |
92ffe055 | 575 | u32 _flags, *flags = NULL; |
55682965 | 576 | |
2ec600d6 LCC |
577 | memset(¶ms, 0, sizeof(params)); |
578 | ||
bba95fef | 579 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
55682965 JB |
580 | if (err) |
581 | return err; | |
582 | ifindex = dev->ifindex; | |
723b038d | 583 | type = dev->ieee80211_ptr->iftype; |
55682965 JB |
584 | dev_put(dev); |
585 | ||
723b038d JB |
586 | err = -EINVAL; |
587 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
588 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
589 | if (type > NL80211_IFTYPE_MAX) | |
590 | goto unlock; | |
591 | } | |
592 | ||
f59ac048 LR |
593 | if (!drv->ops->change_virtual_intf || |
594 | !(drv->wiphy.interface_modes & (1 << type))) { | |
55682965 JB |
595 | err = -EOPNOTSUPP; |
596 | goto unlock; | |
597 | } | |
598 | ||
92ffe055 JB |
599 | if (info->attrs[NL80211_ATTR_MESH_ID]) { |
600 | if (type != NL80211_IFTYPE_MESH_POINT) { | |
601 | err = -EINVAL; | |
602 | goto unlock; | |
603 | } | |
2ec600d6 LCC |
604 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
605 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
606 | } | |
607 | ||
92ffe055 JB |
608 | if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { |
609 | if (type != NL80211_IFTYPE_MONITOR) { | |
610 | err = -EINVAL; | |
611 | goto unlock; | |
612 | } | |
613 | err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], | |
614 | &_flags); | |
615 | if (!err) | |
616 | flags = &_flags; | |
617 | } | |
55682965 | 618 | rtnl_lock(); |
66f7ac50 | 619 | err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, |
92ffe055 | 620 | type, flags, ¶ms); |
60719ffd JB |
621 | |
622 | dev = __dev_get_by_index(&init_net, ifindex); | |
623 | WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type)); | |
624 | ||
55682965 JB |
625 | rtnl_unlock(); |
626 | ||
627 | unlock: | |
628 | cfg80211_put_dev(drv); | |
629 | return err; | |
630 | } | |
631 | ||
632 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) | |
633 | { | |
634 | struct cfg80211_registered_device *drv; | |
2ec600d6 | 635 | struct vif_params params; |
55682965 JB |
636 | int err; |
637 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; | |
66f7ac50 | 638 | u32 flags; |
55682965 | 639 | |
2ec600d6 LCC |
640 | memset(¶ms, 0, sizeof(params)); |
641 | ||
55682965 JB |
642 | if (!info->attrs[NL80211_ATTR_IFNAME]) |
643 | return -EINVAL; | |
644 | ||
645 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
646 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
647 | if (type > NL80211_IFTYPE_MAX) | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | drv = cfg80211_get_dev_from_info(info); | |
652 | if (IS_ERR(drv)) | |
653 | return PTR_ERR(drv); | |
654 | ||
f59ac048 LR |
655 | if (!drv->ops->add_virtual_intf || |
656 | !(drv->wiphy.interface_modes & (1 << type))) { | |
55682965 JB |
657 | err = -EOPNOTSUPP; |
658 | goto unlock; | |
659 | } | |
660 | ||
2ec600d6 LCC |
661 | if (type == NL80211_IFTYPE_MESH_POINT && |
662 | info->attrs[NL80211_ATTR_MESH_ID]) { | |
663 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); | |
664 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
665 | } | |
666 | ||
55682965 | 667 | rtnl_lock(); |
66f7ac50 MW |
668 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
669 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, | |
670 | &flags); | |
55682965 | 671 | err = drv->ops->add_virtual_intf(&drv->wiphy, |
66f7ac50 | 672 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
2ec600d6 | 673 | type, err ? NULL : &flags, ¶ms); |
55682965 JB |
674 | rtnl_unlock(); |
675 | ||
2ec600d6 | 676 | |
55682965 JB |
677 | unlock: |
678 | cfg80211_put_dev(drv); | |
679 | return err; | |
680 | } | |
681 | ||
682 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) | |
683 | { | |
684 | struct cfg80211_registered_device *drv; | |
685 | int ifindex, err; | |
686 | struct net_device *dev; | |
687 | ||
bba95fef | 688 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
55682965 JB |
689 | if (err) |
690 | return err; | |
691 | ifindex = dev->ifindex; | |
692 | dev_put(dev); | |
693 | ||
694 | if (!drv->ops->del_virtual_intf) { | |
695 | err = -EOPNOTSUPP; | |
696 | goto out; | |
697 | } | |
698 | ||
699 | rtnl_lock(); | |
700 | err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); | |
701 | rtnl_unlock(); | |
702 | ||
703 | out: | |
704 | cfg80211_put_dev(drv); | |
705 | return err; | |
706 | } | |
707 | ||
41ade00f JB |
708 | struct get_key_cookie { |
709 | struct sk_buff *msg; | |
710 | int error; | |
711 | }; | |
712 | ||
713 | static void get_key_callback(void *c, struct key_params *params) | |
714 | { | |
715 | struct get_key_cookie *cookie = c; | |
716 | ||
717 | if (params->key) | |
718 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, | |
719 | params->key_len, params->key); | |
720 | ||
721 | if (params->seq) | |
722 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, | |
723 | params->seq_len, params->seq); | |
724 | ||
725 | if (params->cipher) | |
726 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, | |
727 | params->cipher); | |
728 | ||
729 | return; | |
730 | nla_put_failure: | |
731 | cookie->error = 1; | |
732 | } | |
733 | ||
734 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) | |
735 | { | |
736 | struct cfg80211_registered_device *drv; | |
737 | int err; | |
738 | struct net_device *dev; | |
739 | u8 key_idx = 0; | |
740 | u8 *mac_addr = NULL; | |
741 | struct get_key_cookie cookie = { | |
742 | .error = 0, | |
743 | }; | |
744 | void *hdr; | |
745 | struct sk_buff *msg; | |
746 | ||
747 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
748 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
749 | ||
3cfcf6ac | 750 | if (key_idx > 5) |
41ade00f JB |
751 | return -EINVAL; |
752 | ||
753 | if (info->attrs[NL80211_ATTR_MAC]) | |
754 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
755 | ||
bba95fef | 756 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
757 | if (err) |
758 | return err; | |
759 | ||
760 | if (!drv->ops->get_key) { | |
761 | err = -EOPNOTSUPP; | |
762 | goto out; | |
763 | } | |
764 | ||
765 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
766 | if (!msg) { | |
767 | err = -ENOMEM; | |
768 | goto out; | |
769 | } | |
770 | ||
771 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
772 | NL80211_CMD_NEW_KEY); | |
773 | ||
774 | if (IS_ERR(hdr)) { | |
775 | err = PTR_ERR(hdr); | |
776 | goto out; | |
777 | } | |
778 | ||
779 | cookie.msg = msg; | |
780 | ||
781 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
782 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
783 | if (mac_addr) | |
784 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
785 | ||
786 | rtnl_lock(); | |
787 | err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, | |
788 | &cookie, get_key_callback); | |
789 | rtnl_unlock(); | |
790 | ||
791 | if (err) | |
792 | goto out; | |
793 | ||
794 | if (cookie.error) | |
795 | goto nla_put_failure; | |
796 | ||
797 | genlmsg_end(msg, hdr); | |
798 | err = genlmsg_unicast(msg, info->snd_pid); | |
799 | goto out; | |
800 | ||
801 | nla_put_failure: | |
802 | err = -ENOBUFS; | |
803 | nlmsg_free(msg); | |
804 | out: | |
805 | cfg80211_put_dev(drv); | |
806 | dev_put(dev); | |
807 | return err; | |
808 | } | |
809 | ||
810 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) | |
811 | { | |
812 | struct cfg80211_registered_device *drv; | |
813 | int err; | |
814 | struct net_device *dev; | |
815 | u8 key_idx; | |
3cfcf6ac JM |
816 | int (*func)(struct wiphy *wiphy, struct net_device *netdev, |
817 | u8 key_index); | |
41ade00f JB |
818 | |
819 | if (!info->attrs[NL80211_ATTR_KEY_IDX]) | |
820 | return -EINVAL; | |
821 | ||
822 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
823 | ||
3cfcf6ac JM |
824 | if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) { |
825 | if (key_idx < 4 || key_idx > 5) | |
826 | return -EINVAL; | |
827 | } else if (key_idx > 3) | |
41ade00f JB |
828 | return -EINVAL; |
829 | ||
830 | /* currently only support setting default key */ | |
3cfcf6ac JM |
831 | if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] && |
832 | !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) | |
41ade00f JB |
833 | return -EINVAL; |
834 | ||
bba95fef | 835 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
836 | if (err) |
837 | return err; | |
838 | ||
3cfcf6ac JM |
839 | if (info->attrs[NL80211_ATTR_KEY_DEFAULT]) |
840 | func = drv->ops->set_default_key; | |
841 | else | |
842 | func = drv->ops->set_default_mgmt_key; | |
843 | ||
844 | if (!func) { | |
41ade00f JB |
845 | err = -EOPNOTSUPP; |
846 | goto out; | |
847 | } | |
848 | ||
849 | rtnl_lock(); | |
3cfcf6ac | 850 | err = func(&drv->wiphy, dev, key_idx); |
41ade00f JB |
851 | rtnl_unlock(); |
852 | ||
853 | out: | |
854 | cfg80211_put_dev(drv); | |
855 | dev_put(dev); | |
856 | return err; | |
857 | } | |
858 | ||
859 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) | |
860 | { | |
861 | struct cfg80211_registered_device *drv; | |
862 | int err; | |
863 | struct net_device *dev; | |
864 | struct key_params params; | |
865 | u8 key_idx = 0; | |
866 | u8 *mac_addr = NULL; | |
867 | ||
868 | memset(¶ms, 0, sizeof(params)); | |
869 | ||
870 | if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) | |
871 | return -EINVAL; | |
872 | ||
873 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { | |
874 | params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); | |
875 | params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); | |
876 | } | |
877 | ||
878 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
879 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
880 | ||
881 | params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); | |
882 | ||
883 | if (info->attrs[NL80211_ATTR_MAC]) | |
884 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
885 | ||
3cfcf6ac | 886 | if (key_idx > 5) |
41ade00f JB |
887 | return -EINVAL; |
888 | ||
889 | /* | |
890 | * Disallow pairwise keys with non-zero index unless it's WEP | |
891 | * (because current deployments use pairwise WEP keys with | |
892 | * non-zero indizes but 802.11i clearly specifies to use zero) | |
893 | */ | |
894 | if (mac_addr && key_idx && | |
895 | params.cipher != WLAN_CIPHER_SUITE_WEP40 && | |
896 | params.cipher != WLAN_CIPHER_SUITE_WEP104) | |
897 | return -EINVAL; | |
898 | ||
899 | /* TODO: add definitions for the lengths to linux/ieee80211.h */ | |
900 | switch (params.cipher) { | |
901 | case WLAN_CIPHER_SUITE_WEP40: | |
902 | if (params.key_len != 5) | |
903 | return -EINVAL; | |
904 | break; | |
905 | case WLAN_CIPHER_SUITE_TKIP: | |
906 | if (params.key_len != 32) | |
907 | return -EINVAL; | |
908 | break; | |
909 | case WLAN_CIPHER_SUITE_CCMP: | |
910 | if (params.key_len != 16) | |
911 | return -EINVAL; | |
912 | break; | |
913 | case WLAN_CIPHER_SUITE_WEP104: | |
914 | if (params.key_len != 13) | |
915 | return -EINVAL; | |
916 | break; | |
3cfcf6ac JM |
917 | case WLAN_CIPHER_SUITE_AES_CMAC: |
918 | if (params.key_len != 16) | |
919 | return -EINVAL; | |
920 | break; | |
41ade00f JB |
921 | default: |
922 | return -EINVAL; | |
923 | } | |
924 | ||
bba95fef | 925 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
926 | if (err) |
927 | return err; | |
928 | ||
929 | if (!drv->ops->add_key) { | |
930 | err = -EOPNOTSUPP; | |
931 | goto out; | |
932 | } | |
933 | ||
934 | rtnl_lock(); | |
935 | err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); | |
936 | rtnl_unlock(); | |
937 | ||
938 | out: | |
939 | cfg80211_put_dev(drv); | |
940 | dev_put(dev); | |
941 | return err; | |
942 | } | |
943 | ||
944 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) | |
945 | { | |
946 | struct cfg80211_registered_device *drv; | |
947 | int err; | |
948 | struct net_device *dev; | |
949 | u8 key_idx = 0; | |
950 | u8 *mac_addr = NULL; | |
951 | ||
952 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
953 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
954 | ||
3cfcf6ac | 955 | if (key_idx > 5) |
41ade00f JB |
956 | return -EINVAL; |
957 | ||
958 | if (info->attrs[NL80211_ATTR_MAC]) | |
959 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
960 | ||
bba95fef | 961 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
962 | if (err) |
963 | return err; | |
964 | ||
965 | if (!drv->ops->del_key) { | |
966 | err = -EOPNOTSUPP; | |
967 | goto out; | |
968 | } | |
969 | ||
970 | rtnl_lock(); | |
971 | err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); | |
972 | rtnl_unlock(); | |
973 | ||
974 | out: | |
975 | cfg80211_put_dev(drv); | |
976 | dev_put(dev); | |
977 | return err; | |
978 | } | |
979 | ||
ed1b6cc7 JB |
980 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
981 | { | |
982 | int (*call)(struct wiphy *wiphy, struct net_device *dev, | |
983 | struct beacon_parameters *info); | |
984 | struct cfg80211_registered_device *drv; | |
985 | int err; | |
986 | struct net_device *dev; | |
987 | struct beacon_parameters params; | |
988 | int haveinfo = 0; | |
989 | ||
bba95fef | 990 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
ed1b6cc7 JB |
991 | if (err) |
992 | return err; | |
993 | ||
994 | switch (info->genlhdr->cmd) { | |
995 | case NL80211_CMD_NEW_BEACON: | |
996 | /* these are required for NEW_BEACON */ | |
997 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || | |
998 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || | |
999 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
1000 | err = -EINVAL; | |
1001 | goto out; | |
1002 | } | |
1003 | ||
1004 | call = drv->ops->add_beacon; | |
1005 | break; | |
1006 | case NL80211_CMD_SET_BEACON: | |
1007 | call = drv->ops->set_beacon; | |
1008 | break; | |
1009 | default: | |
1010 | WARN_ON(1); | |
1011 | err = -EOPNOTSUPP; | |
1012 | goto out; | |
1013 | } | |
1014 | ||
1015 | if (!call) { | |
1016 | err = -EOPNOTSUPP; | |
1017 | goto out; | |
1018 | } | |
1019 | ||
1020 | memset(¶ms, 0, sizeof(params)); | |
1021 | ||
1022 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
1023 | params.interval = | |
1024 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
1025 | haveinfo = 1; | |
1026 | } | |
1027 | ||
1028 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { | |
1029 | params.dtim_period = | |
1030 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); | |
1031 | haveinfo = 1; | |
1032 | } | |
1033 | ||
1034 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
1035 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
1036 | params.head_len = | |
1037 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
1038 | haveinfo = 1; | |
1039 | } | |
1040 | ||
1041 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { | |
1042 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
1043 | params.tail_len = | |
1044 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
1045 | haveinfo = 1; | |
1046 | } | |
1047 | ||
1048 | if (!haveinfo) { | |
1049 | err = -EINVAL; | |
1050 | goto out; | |
1051 | } | |
1052 | ||
1053 | rtnl_lock(); | |
1054 | err = call(&drv->wiphy, dev, ¶ms); | |
1055 | rtnl_unlock(); | |
1056 | ||
1057 | out: | |
1058 | cfg80211_put_dev(drv); | |
1059 | dev_put(dev); | |
1060 | return err; | |
1061 | } | |
1062 | ||
1063 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) | |
1064 | { | |
1065 | struct cfg80211_registered_device *drv; | |
1066 | int err; | |
1067 | struct net_device *dev; | |
1068 | ||
bba95fef | 1069 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
ed1b6cc7 JB |
1070 | if (err) |
1071 | return err; | |
1072 | ||
1073 | if (!drv->ops->del_beacon) { | |
1074 | err = -EOPNOTSUPP; | |
1075 | goto out; | |
1076 | } | |
1077 | ||
1078 | rtnl_lock(); | |
1079 | err = drv->ops->del_beacon(&drv->wiphy, dev); | |
1080 | rtnl_unlock(); | |
1081 | ||
1082 | out: | |
1083 | cfg80211_put_dev(drv); | |
1084 | dev_put(dev); | |
1085 | return err; | |
1086 | } | |
1087 | ||
5727ef1b JB |
1088 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
1089 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, | |
1090 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, | |
1091 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, | |
1092 | }; | |
1093 | ||
1094 | static int parse_station_flags(struct nlattr *nla, u32 *staflags) | |
1095 | { | |
1096 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; | |
1097 | int flag; | |
1098 | ||
1099 | *staflags = 0; | |
1100 | ||
1101 | if (!nla) | |
1102 | return 0; | |
1103 | ||
1104 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, | |
1105 | nla, sta_flags_policy)) | |
1106 | return -EINVAL; | |
1107 | ||
1108 | *staflags = STATION_FLAG_CHANGED; | |
1109 | ||
1110 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) | |
1111 | if (flags[flag]) | |
1112 | *staflags |= (1<<flag); | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
420e7fab HR |
1117 | static u16 nl80211_calculate_bitrate(struct rate_info *rate) |
1118 | { | |
1119 | int modulation, streams, bitrate; | |
1120 | ||
1121 | if (!(rate->flags & RATE_INFO_FLAGS_MCS)) | |
1122 | return rate->legacy; | |
1123 | ||
1124 | /* the formula below does only work for MCS values smaller than 32 */ | |
1125 | if (rate->mcs >= 32) | |
1126 | return 0; | |
1127 | ||
1128 | modulation = rate->mcs & 7; | |
1129 | streams = (rate->mcs >> 3) + 1; | |
1130 | ||
1131 | bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ? | |
1132 | 13500000 : 6500000; | |
1133 | ||
1134 | if (modulation < 4) | |
1135 | bitrate *= (modulation + 1); | |
1136 | else if (modulation == 4) | |
1137 | bitrate *= (modulation + 2); | |
1138 | else | |
1139 | bitrate *= (modulation + 3); | |
1140 | ||
1141 | bitrate *= streams; | |
1142 | ||
1143 | if (rate->flags & RATE_INFO_FLAGS_SHORT_GI) | |
1144 | bitrate = (bitrate / 9) * 10; | |
1145 | ||
1146 | /* do NOT round down here */ | |
1147 | return (bitrate + 50000) / 100000; | |
1148 | } | |
1149 | ||
fd5b74dc JB |
1150 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
1151 | int flags, struct net_device *dev, | |
2ec600d6 | 1152 | u8 *mac_addr, struct station_info *sinfo) |
fd5b74dc JB |
1153 | { |
1154 | void *hdr; | |
420e7fab HR |
1155 | struct nlattr *sinfoattr, *txrate; |
1156 | u16 bitrate; | |
fd5b74dc JB |
1157 | |
1158 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1159 | if (!hdr) | |
1160 | return -1; | |
1161 | ||
1162 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1163 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
1164 | ||
2ec600d6 LCC |
1165 | sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); |
1166 | if (!sinfoattr) | |
fd5b74dc | 1167 | goto nla_put_failure; |
2ec600d6 LCC |
1168 | if (sinfo->filled & STATION_INFO_INACTIVE_TIME) |
1169 | NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, | |
1170 | sinfo->inactive_time); | |
1171 | if (sinfo->filled & STATION_INFO_RX_BYTES) | |
1172 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, | |
1173 | sinfo->rx_bytes); | |
1174 | if (sinfo->filled & STATION_INFO_TX_BYTES) | |
1175 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, | |
1176 | sinfo->tx_bytes); | |
1177 | if (sinfo->filled & STATION_INFO_LLID) | |
1178 | NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, | |
1179 | sinfo->llid); | |
1180 | if (sinfo->filled & STATION_INFO_PLID) | |
1181 | NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, | |
1182 | sinfo->plid); | |
1183 | if (sinfo->filled & STATION_INFO_PLINK_STATE) | |
1184 | NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, | |
1185 | sinfo->plink_state); | |
420e7fab HR |
1186 | if (sinfo->filled & STATION_INFO_SIGNAL) |
1187 | NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL, | |
1188 | sinfo->signal); | |
1189 | if (sinfo->filled & STATION_INFO_TX_BITRATE) { | |
1190 | txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE); | |
1191 | if (!txrate) | |
1192 | goto nla_put_failure; | |
1193 | ||
1194 | /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */ | |
1195 | bitrate = nl80211_calculate_bitrate(&sinfo->txrate); | |
1196 | if (bitrate > 0) | |
1197 | NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); | |
2ec600d6 | 1198 | |
420e7fab HR |
1199 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS) |
1200 | NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, | |
1201 | sinfo->txrate.mcs); | |
1202 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) | |
1203 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); | |
1204 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI) | |
1205 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); | |
1206 | ||
1207 | nla_nest_end(msg, txrate); | |
1208 | } | |
98c8a60a JM |
1209 | if (sinfo->filled & STATION_INFO_RX_PACKETS) |
1210 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, | |
1211 | sinfo->rx_packets); | |
1212 | if (sinfo->filled & STATION_INFO_TX_PACKETS) | |
1213 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, | |
1214 | sinfo->tx_packets); | |
2ec600d6 | 1215 | nla_nest_end(msg, sinfoattr); |
fd5b74dc JB |
1216 | |
1217 | return genlmsg_end(msg, hdr); | |
1218 | ||
1219 | nla_put_failure: | |
bc3ed28c TG |
1220 | genlmsg_cancel(msg, hdr); |
1221 | return -EMSGSIZE; | |
fd5b74dc JB |
1222 | } |
1223 | ||
2ec600d6 | 1224 | static int nl80211_dump_station(struct sk_buff *skb, |
bba95fef | 1225 | struct netlink_callback *cb) |
2ec600d6 | 1226 | { |
2ec600d6 LCC |
1227 | struct station_info sinfo; |
1228 | struct cfg80211_registered_device *dev; | |
bba95fef | 1229 | struct net_device *netdev; |
2ec600d6 | 1230 | u8 mac_addr[ETH_ALEN]; |
bba95fef JB |
1231 | int ifidx = cb->args[0]; |
1232 | int sta_idx = cb->args[1]; | |
2ec600d6 | 1233 | int err; |
2ec600d6 | 1234 | |
bba95fef JB |
1235 | if (!ifidx) { |
1236 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1237 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1238 | nl80211_policy); | |
1239 | if (err) | |
1240 | return err; | |
2ec600d6 | 1241 | |
bba95fef JB |
1242 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
1243 | return -EINVAL; | |
2ec600d6 | 1244 | |
bba95fef JB |
1245 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
1246 | if (!ifidx) | |
1247 | return -EINVAL; | |
2ec600d6 | 1248 | } |
2ec600d6 | 1249 | |
bba95fef JB |
1250 | netdev = dev_get_by_index(&init_net, ifidx); |
1251 | if (!netdev) | |
1252 | return -ENODEV; | |
2ec600d6 | 1253 | |
bba95fef JB |
1254 | dev = cfg80211_get_dev_from_ifindex(ifidx); |
1255 | if (IS_ERR(dev)) { | |
1256 | err = PTR_ERR(dev); | |
1257 | goto out_put_netdev; | |
1258 | } | |
1259 | ||
1260 | if (!dev->ops->dump_station) { | |
1261 | err = -ENOSYS; | |
1262 | goto out_err; | |
1263 | } | |
1264 | ||
1265 | rtnl_lock(); | |
1266 | ||
1267 | while (1) { | |
1268 | err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, | |
1269 | mac_addr, &sinfo); | |
1270 | if (err == -ENOENT) | |
1271 | break; | |
1272 | if (err) | |
1273 | goto out_err_rtnl; | |
1274 | ||
1275 | if (nl80211_send_station(skb, | |
1276 | NETLINK_CB(cb->skb).pid, | |
1277 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1278 | netdev, mac_addr, | |
1279 | &sinfo) < 0) | |
1280 | goto out; | |
1281 | ||
1282 | sta_idx++; | |
1283 | } | |
1284 | ||
1285 | ||
1286 | out: | |
1287 | cb->args[1] = sta_idx; | |
1288 | err = skb->len; | |
1289 | out_err_rtnl: | |
1290 | rtnl_unlock(); | |
1291 | out_err: | |
1292 | cfg80211_put_dev(dev); | |
1293 | out_put_netdev: | |
1294 | dev_put(netdev); | |
1295 | ||
1296 | return err; | |
2ec600d6 | 1297 | } |
fd5b74dc | 1298 | |
5727ef1b JB |
1299 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
1300 | { | |
fd5b74dc JB |
1301 | struct cfg80211_registered_device *drv; |
1302 | int err; | |
1303 | struct net_device *dev; | |
2ec600d6 | 1304 | struct station_info sinfo; |
fd5b74dc JB |
1305 | struct sk_buff *msg; |
1306 | u8 *mac_addr = NULL; | |
1307 | ||
2ec600d6 | 1308 | memset(&sinfo, 0, sizeof(sinfo)); |
fd5b74dc JB |
1309 | |
1310 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1311 | return -EINVAL; | |
1312 | ||
1313 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1314 | ||
bba95fef | 1315 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
fd5b74dc JB |
1316 | if (err) |
1317 | return err; | |
1318 | ||
1319 | if (!drv->ops->get_station) { | |
1320 | err = -EOPNOTSUPP; | |
1321 | goto out; | |
1322 | } | |
1323 | ||
1324 | rtnl_lock(); | |
2ec600d6 | 1325 | err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo); |
fd5b74dc JB |
1326 | rtnl_unlock(); |
1327 | ||
2ec600d6 LCC |
1328 | if (err) |
1329 | goto out; | |
1330 | ||
fd5b74dc JB |
1331 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
1332 | if (!msg) | |
1333 | goto out; | |
1334 | ||
1335 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, | |
2ec600d6 | 1336 | dev, mac_addr, &sinfo) < 0) |
fd5b74dc JB |
1337 | goto out_free; |
1338 | ||
1339 | err = genlmsg_unicast(msg, info->snd_pid); | |
1340 | goto out; | |
1341 | ||
1342 | out_free: | |
1343 | nlmsg_free(msg); | |
1344 | ||
1345 | out: | |
1346 | cfg80211_put_dev(drv); | |
1347 | dev_put(dev); | |
1348 | return err; | |
5727ef1b JB |
1349 | } |
1350 | ||
1351 | /* | |
1352 | * Get vlan interface making sure it is on the right wiphy. | |
1353 | */ | |
1354 | static int get_vlan(struct nlattr *vlanattr, | |
1355 | struct cfg80211_registered_device *rdev, | |
1356 | struct net_device **vlan) | |
1357 | { | |
1358 | *vlan = NULL; | |
1359 | ||
1360 | if (vlanattr) { | |
1361 | *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); | |
1362 | if (!*vlan) | |
1363 | return -ENODEV; | |
1364 | if (!(*vlan)->ieee80211_ptr) | |
1365 | return -EINVAL; | |
1366 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) | |
1367 | return -EINVAL; | |
1368 | } | |
1369 | return 0; | |
1370 | } | |
1371 | ||
1372 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) | |
1373 | { | |
1374 | struct cfg80211_registered_device *drv; | |
1375 | int err; | |
1376 | struct net_device *dev; | |
1377 | struct station_parameters params; | |
1378 | u8 *mac_addr = NULL; | |
1379 | ||
1380 | memset(¶ms, 0, sizeof(params)); | |
1381 | ||
1382 | params.listen_interval = -1; | |
1383 | ||
1384 | if (info->attrs[NL80211_ATTR_STA_AID]) | |
1385 | return -EINVAL; | |
1386 | ||
1387 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1388 | return -EINVAL; | |
1389 | ||
1390 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1391 | ||
1392 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { | |
1393 | params.supported_rates = | |
1394 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1395 | params.supported_rates_len = | |
1396 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1397 | } | |
1398 | ||
1399 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1400 | params.listen_interval = | |
1401 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
1402 | ||
36aedc90 JM |
1403 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
1404 | params.ht_capa = | |
1405 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
1406 | ||
5727ef1b JB |
1407 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], |
1408 | ¶ms.station_flags)) | |
1409 | return -EINVAL; | |
1410 | ||
2ec600d6 LCC |
1411 | if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) |
1412 | params.plink_action = | |
1413 | nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); | |
1414 | ||
bba95fef | 1415 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1416 | if (err) |
1417 | return err; | |
1418 | ||
1419 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1420 | if (err) | |
1421 | goto out; | |
1422 | ||
1423 | if (!drv->ops->change_station) { | |
1424 | err = -EOPNOTSUPP; | |
1425 | goto out; | |
1426 | } | |
1427 | ||
1428 | rtnl_lock(); | |
1429 | err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1430 | rtnl_unlock(); | |
1431 | ||
1432 | out: | |
1433 | if (params.vlan) | |
1434 | dev_put(params.vlan); | |
1435 | cfg80211_put_dev(drv); | |
1436 | dev_put(dev); | |
1437 | return err; | |
1438 | } | |
1439 | ||
1440 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) | |
1441 | { | |
1442 | struct cfg80211_registered_device *drv; | |
1443 | int err; | |
1444 | struct net_device *dev; | |
1445 | struct station_parameters params; | |
1446 | u8 *mac_addr = NULL; | |
1447 | ||
1448 | memset(¶ms, 0, sizeof(params)); | |
1449 | ||
1450 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1451 | return -EINVAL; | |
1452 | ||
1453 | if (!info->attrs[NL80211_ATTR_STA_AID]) | |
1454 | return -EINVAL; | |
1455 | ||
1456 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1457 | return -EINVAL; | |
1458 | ||
1459 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) | |
1460 | return -EINVAL; | |
1461 | ||
1462 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1463 | params.supported_rates = | |
1464 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1465 | params.supported_rates_len = | |
1466 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1467 | params.listen_interval = | |
1468 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
16f2e85d | 1469 | params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); |
36aedc90 JM |
1470 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
1471 | params.ht_capa = | |
1472 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
5727ef1b JB |
1473 | |
1474 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
1475 | ¶ms.station_flags)) | |
1476 | return -EINVAL; | |
1477 | ||
bba95fef | 1478 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1479 | if (err) |
1480 | return err; | |
1481 | ||
1482 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1483 | if (err) | |
1484 | goto out; | |
1485 | ||
1486 | if (!drv->ops->add_station) { | |
1487 | err = -EOPNOTSUPP; | |
1488 | goto out; | |
1489 | } | |
1490 | ||
1491 | rtnl_lock(); | |
1492 | err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1493 | rtnl_unlock(); | |
1494 | ||
1495 | out: | |
1496 | if (params.vlan) | |
1497 | dev_put(params.vlan); | |
1498 | cfg80211_put_dev(drv); | |
1499 | dev_put(dev); | |
1500 | return err; | |
1501 | } | |
1502 | ||
1503 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) | |
1504 | { | |
1505 | struct cfg80211_registered_device *drv; | |
1506 | int err; | |
1507 | struct net_device *dev; | |
1508 | u8 *mac_addr = NULL; | |
1509 | ||
1510 | if (info->attrs[NL80211_ATTR_MAC]) | |
1511 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1512 | ||
bba95fef | 1513 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1514 | if (err) |
1515 | return err; | |
1516 | ||
1517 | if (!drv->ops->del_station) { | |
1518 | err = -EOPNOTSUPP; | |
1519 | goto out; | |
1520 | } | |
1521 | ||
1522 | rtnl_lock(); | |
1523 | err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); | |
1524 | rtnl_unlock(); | |
1525 | ||
1526 | out: | |
1527 | cfg80211_put_dev(drv); | |
1528 | dev_put(dev); | |
1529 | return err; | |
1530 | } | |
1531 | ||
2ec600d6 LCC |
1532 | static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, |
1533 | int flags, struct net_device *dev, | |
1534 | u8 *dst, u8 *next_hop, | |
1535 | struct mpath_info *pinfo) | |
1536 | { | |
1537 | void *hdr; | |
1538 | struct nlattr *pinfoattr; | |
1539 | ||
1540 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1541 | if (!hdr) | |
1542 | return -1; | |
1543 | ||
1544 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1545 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); | |
1546 | NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); | |
1547 | ||
1548 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); | |
1549 | if (!pinfoattr) | |
1550 | goto nla_put_failure; | |
1551 | if (pinfo->filled & MPATH_INFO_FRAME_QLEN) | |
1552 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, | |
1553 | pinfo->frame_qlen); | |
1554 | if (pinfo->filled & MPATH_INFO_DSN) | |
1555 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN, | |
1556 | pinfo->dsn); | |
1557 | if (pinfo->filled & MPATH_INFO_METRIC) | |
1558 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, | |
1559 | pinfo->metric); | |
1560 | if (pinfo->filled & MPATH_INFO_EXPTIME) | |
1561 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, | |
1562 | pinfo->exptime); | |
1563 | if (pinfo->filled & MPATH_INFO_FLAGS) | |
1564 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, | |
1565 | pinfo->flags); | |
1566 | if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) | |
1567 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, | |
1568 | pinfo->discovery_timeout); | |
1569 | if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) | |
1570 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, | |
1571 | pinfo->discovery_retries); | |
1572 | ||
1573 | nla_nest_end(msg, pinfoattr); | |
1574 | ||
1575 | return genlmsg_end(msg, hdr); | |
1576 | ||
1577 | nla_put_failure: | |
bc3ed28c TG |
1578 | genlmsg_cancel(msg, hdr); |
1579 | return -EMSGSIZE; | |
2ec600d6 LCC |
1580 | } |
1581 | ||
1582 | static int nl80211_dump_mpath(struct sk_buff *skb, | |
bba95fef | 1583 | struct netlink_callback *cb) |
2ec600d6 | 1584 | { |
2ec600d6 LCC |
1585 | struct mpath_info pinfo; |
1586 | struct cfg80211_registered_device *dev; | |
bba95fef | 1587 | struct net_device *netdev; |
2ec600d6 LCC |
1588 | u8 dst[ETH_ALEN]; |
1589 | u8 next_hop[ETH_ALEN]; | |
bba95fef JB |
1590 | int ifidx = cb->args[0]; |
1591 | int path_idx = cb->args[1]; | |
2ec600d6 | 1592 | int err; |
2ec600d6 | 1593 | |
bba95fef JB |
1594 | if (!ifidx) { |
1595 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1596 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1597 | nl80211_policy); | |
1598 | if (err) | |
1599 | return err; | |
1600 | ||
1601 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
1602 | return -EINVAL; | |
1603 | ||
1604 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
1605 | if (!ifidx) | |
1606 | return -EINVAL; | |
1607 | } | |
1608 | ||
1609 | netdev = dev_get_by_index(&init_net, ifidx); | |
1610 | if (!netdev) | |
1611 | return -ENODEV; | |
1612 | ||
1613 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
1614 | if (IS_ERR(dev)) { | |
1615 | err = PTR_ERR(dev); | |
1616 | goto out_put_netdev; | |
1617 | } | |
1618 | ||
1619 | if (!dev->ops->dump_mpath) { | |
1620 | err = -ENOSYS; | |
1621 | goto out_err; | |
1622 | } | |
1623 | ||
1624 | rtnl_lock(); | |
1625 | ||
1626 | while (1) { | |
1627 | err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, | |
1628 | dst, next_hop, &pinfo); | |
1629 | if (err == -ENOENT) | |
2ec600d6 | 1630 | break; |
bba95fef JB |
1631 | if (err) |
1632 | goto out_err_rtnl; | |
2ec600d6 | 1633 | |
bba95fef JB |
1634 | if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, |
1635 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1636 | netdev, dst, next_hop, | |
1637 | &pinfo) < 0) | |
1638 | goto out; | |
2ec600d6 | 1639 | |
bba95fef | 1640 | path_idx++; |
2ec600d6 | 1641 | } |
2ec600d6 | 1642 | |
2ec600d6 | 1643 | |
bba95fef JB |
1644 | out: |
1645 | cb->args[1] = path_idx; | |
1646 | err = skb->len; | |
1647 | out_err_rtnl: | |
1648 | rtnl_unlock(); | |
1649 | out_err: | |
1650 | cfg80211_put_dev(dev); | |
1651 | out_put_netdev: | |
1652 | dev_put(netdev); | |
1653 | ||
1654 | return err; | |
2ec600d6 LCC |
1655 | } |
1656 | ||
1657 | static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) | |
1658 | { | |
1659 | struct cfg80211_registered_device *drv; | |
1660 | int err; | |
1661 | struct net_device *dev; | |
1662 | struct mpath_info pinfo; | |
1663 | struct sk_buff *msg; | |
1664 | u8 *dst = NULL; | |
1665 | u8 next_hop[ETH_ALEN]; | |
1666 | ||
1667 | memset(&pinfo, 0, sizeof(pinfo)); | |
1668 | ||
1669 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1670 | return -EINVAL; | |
1671 | ||
1672 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1673 | ||
bba95fef | 1674 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1675 | if (err) |
1676 | return err; | |
1677 | ||
1678 | if (!drv->ops->get_mpath) { | |
1679 | err = -EOPNOTSUPP; | |
1680 | goto out; | |
1681 | } | |
1682 | ||
1683 | rtnl_lock(); | |
1684 | err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo); | |
1685 | rtnl_unlock(); | |
1686 | ||
1687 | if (err) | |
1688 | goto out; | |
1689 | ||
1690 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1691 | if (!msg) | |
1692 | goto out; | |
1693 | ||
1694 | if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, | |
1695 | dev, dst, next_hop, &pinfo) < 0) | |
1696 | goto out_free; | |
1697 | ||
1698 | err = genlmsg_unicast(msg, info->snd_pid); | |
1699 | goto out; | |
1700 | ||
1701 | out_free: | |
1702 | nlmsg_free(msg); | |
1703 | ||
1704 | out: | |
1705 | cfg80211_put_dev(drv); | |
1706 | dev_put(dev); | |
1707 | return err; | |
1708 | } | |
1709 | ||
1710 | static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) | |
1711 | { | |
1712 | struct cfg80211_registered_device *drv; | |
1713 | int err; | |
1714 | struct net_device *dev; | |
1715 | u8 *dst = NULL; | |
1716 | u8 *next_hop = NULL; | |
1717 | ||
1718 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1719 | return -EINVAL; | |
1720 | ||
1721 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1722 | return -EINVAL; | |
1723 | ||
1724 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1725 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1726 | ||
bba95fef | 1727 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1728 | if (err) |
1729 | return err; | |
1730 | ||
1731 | if (!drv->ops->change_mpath) { | |
1732 | err = -EOPNOTSUPP; | |
1733 | goto out; | |
1734 | } | |
1735 | ||
1736 | rtnl_lock(); | |
1737 | err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop); | |
1738 | rtnl_unlock(); | |
1739 | ||
1740 | out: | |
1741 | cfg80211_put_dev(drv); | |
1742 | dev_put(dev); | |
1743 | return err; | |
1744 | } | |
1745 | static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) | |
1746 | { | |
1747 | struct cfg80211_registered_device *drv; | |
1748 | int err; | |
1749 | struct net_device *dev; | |
1750 | u8 *dst = NULL; | |
1751 | u8 *next_hop = NULL; | |
1752 | ||
1753 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1754 | return -EINVAL; | |
1755 | ||
1756 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1757 | return -EINVAL; | |
1758 | ||
1759 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1760 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1761 | ||
bba95fef | 1762 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1763 | if (err) |
1764 | return err; | |
1765 | ||
1766 | if (!drv->ops->add_mpath) { | |
1767 | err = -EOPNOTSUPP; | |
1768 | goto out; | |
1769 | } | |
1770 | ||
1771 | rtnl_lock(); | |
1772 | err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop); | |
1773 | rtnl_unlock(); | |
1774 | ||
1775 | out: | |
1776 | cfg80211_put_dev(drv); | |
1777 | dev_put(dev); | |
1778 | return err; | |
1779 | } | |
1780 | ||
1781 | static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) | |
1782 | { | |
1783 | struct cfg80211_registered_device *drv; | |
1784 | int err; | |
1785 | struct net_device *dev; | |
1786 | u8 *dst = NULL; | |
1787 | ||
1788 | if (info->attrs[NL80211_ATTR_MAC]) | |
1789 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1790 | ||
bba95fef | 1791 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1792 | if (err) |
1793 | return err; | |
1794 | ||
1795 | if (!drv->ops->del_mpath) { | |
1796 | err = -EOPNOTSUPP; | |
1797 | goto out; | |
1798 | } | |
1799 | ||
1800 | rtnl_lock(); | |
1801 | err = drv->ops->del_mpath(&drv->wiphy, dev, dst); | |
1802 | rtnl_unlock(); | |
1803 | ||
1804 | out: | |
1805 | cfg80211_put_dev(drv); | |
1806 | dev_put(dev); | |
1807 | return err; | |
1808 | } | |
1809 | ||
9f1ba906 JM |
1810 | static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) |
1811 | { | |
1812 | struct cfg80211_registered_device *drv; | |
1813 | int err; | |
1814 | struct net_device *dev; | |
1815 | struct bss_parameters params; | |
1816 | ||
1817 | memset(¶ms, 0, sizeof(params)); | |
1818 | /* default to not changing parameters */ | |
1819 | params.use_cts_prot = -1; | |
1820 | params.use_short_preamble = -1; | |
1821 | params.use_short_slot_time = -1; | |
1822 | ||
1823 | if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) | |
1824 | params.use_cts_prot = | |
1825 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); | |
1826 | if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) | |
1827 | params.use_short_preamble = | |
1828 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); | |
1829 | if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) | |
1830 | params.use_short_slot_time = | |
1831 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); | |
90c97a04 JM |
1832 | if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { |
1833 | params.basic_rates = | |
1834 | nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
1835 | params.basic_rates_len = | |
1836 | nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
1837 | } | |
9f1ba906 JM |
1838 | |
1839 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1840 | if (err) | |
1841 | return err; | |
1842 | ||
1843 | if (!drv->ops->change_bss) { | |
1844 | err = -EOPNOTSUPP; | |
1845 | goto out; | |
1846 | } | |
1847 | ||
1848 | rtnl_lock(); | |
1849 | err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); | |
1850 | rtnl_unlock(); | |
1851 | ||
1852 | out: | |
1853 | cfg80211_put_dev(drv); | |
1854 | dev_put(dev); | |
1855 | return err; | |
1856 | } | |
1857 | ||
b2e1b302 LR |
1858 | static const struct nla_policy |
1859 | reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { | |
1860 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
1861 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
1862 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
1863 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
1864 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
1865 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
1866 | }; | |
1867 | ||
1868 | static int parse_reg_rule(struct nlattr *tb[], | |
1869 | struct ieee80211_reg_rule *reg_rule) | |
1870 | { | |
1871 | struct ieee80211_freq_range *freq_range = ®_rule->freq_range; | |
1872 | struct ieee80211_power_rule *power_rule = ®_rule->power_rule; | |
1873 | ||
1874 | if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) | |
1875 | return -EINVAL; | |
1876 | if (!tb[NL80211_ATTR_FREQ_RANGE_START]) | |
1877 | return -EINVAL; | |
1878 | if (!tb[NL80211_ATTR_FREQ_RANGE_END]) | |
1879 | return -EINVAL; | |
1880 | if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) | |
1881 | return -EINVAL; | |
1882 | if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
1883 | return -EINVAL; | |
1884 | ||
1885 | reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); | |
1886 | ||
1887 | freq_range->start_freq_khz = | |
1888 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); | |
1889 | freq_range->end_freq_khz = | |
1890 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); | |
1891 | freq_range->max_bandwidth_khz = | |
1892 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); | |
1893 | ||
1894 | power_rule->max_eirp = | |
1895 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); | |
1896 | ||
1897 | if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) | |
1898 | power_rule->max_antenna_gain = | |
1899 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
1904 | static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) | |
1905 | { | |
1906 | int r; | |
1907 | char *data = NULL; | |
1908 | ||
1909 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
1910 | return -EINVAL; | |
1911 | ||
1912 | data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
1913 | ||
1914 | #ifdef CONFIG_WIRELESS_OLD_REGULATORY | |
1915 | /* We ignore world regdom requests with the old regdom setup */ | |
1916 | if (is_world_regdom(data)) | |
1917 | return -EINVAL; | |
1918 | #endif | |
1919 | mutex_lock(&cfg80211_drv_mutex); | |
3f2355cb | 1920 | r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY); |
b2e1b302 | 1921 | mutex_unlock(&cfg80211_drv_mutex); |
d81c2d9c LR |
1922 | /* This means the regulatory domain was already set, however |
1923 | * we don't want to confuse userspace with a "successful error" | |
1924 | * message so lets just treat it as a success */ | |
1925 | if (r == -EALREADY) | |
1926 | r = 0; | |
b2e1b302 LR |
1927 | return r; |
1928 | } | |
1929 | ||
93da9cc1 | 1930 | static int nl80211_get_mesh_params(struct sk_buff *skb, |
1931 | struct genl_info *info) | |
1932 | { | |
1933 | struct cfg80211_registered_device *drv; | |
1934 | struct mesh_config cur_params; | |
1935 | int err; | |
1936 | struct net_device *dev; | |
1937 | void *hdr; | |
1938 | struct nlattr *pinfoattr; | |
1939 | struct sk_buff *msg; | |
1940 | ||
1941 | /* Look up our device */ | |
1942 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1943 | if (err) | |
1944 | return err; | |
1945 | ||
1946 | /* Get the mesh params */ | |
1947 | rtnl_lock(); | |
1948 | err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params); | |
1949 | rtnl_unlock(); | |
1950 | if (err) | |
1951 | goto out; | |
1952 | ||
1953 | /* Draw up a netlink message to send back */ | |
1954 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1955 | if (!msg) { | |
1956 | err = -ENOBUFS; | |
1957 | goto out; | |
1958 | } | |
1959 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
1960 | NL80211_CMD_GET_MESH_PARAMS); | |
1961 | if (!hdr) | |
1962 | goto nla_put_failure; | |
1963 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS); | |
1964 | if (!pinfoattr) | |
1965 | goto nla_put_failure; | |
1966 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1967 | NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, | |
1968 | cur_params.dot11MeshRetryTimeout); | |
1969 | NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, | |
1970 | cur_params.dot11MeshConfirmTimeout); | |
1971 | NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, | |
1972 | cur_params.dot11MeshHoldingTimeout); | |
1973 | NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, | |
1974 | cur_params.dot11MeshMaxPeerLinks); | |
1975 | NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES, | |
1976 | cur_params.dot11MeshMaxRetries); | |
1977 | NLA_PUT_U8(msg, NL80211_MESHCONF_TTL, | |
1978 | cur_params.dot11MeshTTL); | |
1979 | NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, | |
1980 | cur_params.auto_open_plinks); | |
1981 | NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, | |
1982 | cur_params.dot11MeshHWMPmaxPREQretries); | |
1983 | NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, | |
1984 | cur_params.path_refresh_time); | |
1985 | NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, | |
1986 | cur_params.min_discovery_timeout); | |
1987 | NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, | |
1988 | cur_params.dot11MeshHWMPactivePathTimeout); | |
1989 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, | |
1990 | cur_params.dot11MeshHWMPpreqMinInterval); | |
1991 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, | |
1992 | cur_params.dot11MeshHWMPnetDiameterTraversalTime); | |
1993 | nla_nest_end(msg, pinfoattr); | |
1994 | genlmsg_end(msg, hdr); | |
1995 | err = genlmsg_unicast(msg, info->snd_pid); | |
1996 | goto out; | |
1997 | ||
1998 | nla_put_failure: | |
1999 | genlmsg_cancel(msg, hdr); | |
2000 | err = -EMSGSIZE; | |
2001 | out: | |
2002 | /* Cleanup */ | |
2003 | cfg80211_put_dev(drv); | |
2004 | dev_put(dev); | |
2005 | return err; | |
2006 | } | |
2007 | ||
2008 | #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ | |
2009 | do {\ | |
2010 | if (table[attr_num]) {\ | |
2011 | cfg.param = nla_fn(table[attr_num]); \ | |
2012 | mask |= (1 << (attr_num - 1)); \ | |
2013 | } \ | |
2014 | } while (0);\ | |
2015 | ||
2016 | static struct nla_policy | |
2017 | nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = { | |
2018 | [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, | |
2019 | [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, | |
2020 | [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, | |
2021 | [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, | |
2022 | [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, | |
2023 | [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, | |
2024 | [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, | |
2025 | ||
2026 | [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, | |
2027 | [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, | |
2028 | [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, | |
2029 | [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, | |
2030 | [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, | |
2031 | [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, | |
2032 | }; | |
2033 | ||
2034 | static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) | |
2035 | { | |
2036 | int err; | |
2037 | u32 mask; | |
2038 | struct cfg80211_registered_device *drv; | |
2039 | struct net_device *dev; | |
2040 | struct mesh_config cfg; | |
2041 | struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; | |
2042 | struct nlattr *parent_attr; | |
2043 | ||
2044 | parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS]; | |
2045 | if (!parent_attr) | |
2046 | return -EINVAL; | |
2047 | if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, | |
2048 | parent_attr, nl80211_meshconf_params_policy)) | |
2049 | return -EINVAL; | |
2050 | ||
2051 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
2052 | if (err) | |
2053 | return err; | |
2054 | ||
2055 | /* This makes sure that there aren't more than 32 mesh config | |
2056 | * parameters (otherwise our bitfield scheme would not work.) */ | |
2057 | BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); | |
2058 | ||
2059 | /* Fill in the params struct */ | |
2060 | mask = 0; | |
2061 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, | |
2062 | mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); | |
2063 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, | |
2064 | mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16); | |
2065 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, | |
2066 | mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16); | |
2067 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, | |
2068 | mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16); | |
2069 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, | |
2070 | mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); | |
2071 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, | |
2072 | mask, NL80211_MESHCONF_TTL, nla_get_u8); | |
2073 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, | |
2074 | mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8); | |
2075 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, | |
2076 | mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, | |
2077 | nla_get_u8); | |
2078 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, | |
2079 | mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32); | |
2080 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, | |
2081 | mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, | |
2082 | nla_get_u16); | |
2083 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, | |
2084 | mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, | |
2085 | nla_get_u32); | |
2086 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, | |
2087 | mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, | |
2088 | nla_get_u16); | |
2089 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, | |
2090 | dot11MeshHWMPnetDiameterTraversalTime, | |
2091 | mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, | |
2092 | nla_get_u16); | |
2093 | ||
2094 | /* Apply changes */ | |
2095 | rtnl_lock(); | |
2096 | err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask); | |
2097 | rtnl_unlock(); | |
2098 | ||
2099 | /* cleanup */ | |
2100 | cfg80211_put_dev(drv); | |
2101 | dev_put(dev); | |
2102 | return err; | |
2103 | } | |
2104 | ||
2105 | #undef FILL_IN_MESH_PARAM_IF_SET | |
2106 | ||
f130347c LR |
2107 | static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) |
2108 | { | |
2109 | struct sk_buff *msg; | |
2110 | void *hdr = NULL; | |
2111 | struct nlattr *nl_reg_rules; | |
2112 | unsigned int i; | |
2113 | int err = -EINVAL; | |
2114 | ||
2115 | mutex_lock(&cfg80211_drv_mutex); | |
2116 | ||
2117 | if (!cfg80211_regdomain) | |
2118 | goto out; | |
2119 | ||
2120 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2121 | if (!msg) { | |
2122 | err = -ENOBUFS; | |
2123 | goto out; | |
2124 | } | |
2125 | ||
2126 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
2127 | NL80211_CMD_GET_REG); | |
2128 | if (!hdr) | |
2129 | goto nla_put_failure; | |
2130 | ||
2131 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, | |
2132 | cfg80211_regdomain->alpha2); | |
2133 | ||
2134 | nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); | |
2135 | if (!nl_reg_rules) | |
2136 | goto nla_put_failure; | |
2137 | ||
2138 | for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) { | |
2139 | struct nlattr *nl_reg_rule; | |
2140 | const struct ieee80211_reg_rule *reg_rule; | |
2141 | const struct ieee80211_freq_range *freq_range; | |
2142 | const struct ieee80211_power_rule *power_rule; | |
2143 | ||
2144 | reg_rule = &cfg80211_regdomain->reg_rules[i]; | |
2145 | freq_range = ®_rule->freq_range; | |
2146 | power_rule = ®_rule->power_rule; | |
2147 | ||
2148 | nl_reg_rule = nla_nest_start(msg, i); | |
2149 | if (!nl_reg_rule) | |
2150 | goto nla_put_failure; | |
2151 | ||
2152 | NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS, | |
2153 | reg_rule->flags); | |
2154 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START, | |
2155 | freq_range->start_freq_khz); | |
2156 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END, | |
2157 | freq_range->end_freq_khz); | |
2158 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, | |
2159 | freq_range->max_bandwidth_khz); | |
2160 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, | |
2161 | power_rule->max_antenna_gain); | |
2162 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, | |
2163 | power_rule->max_eirp); | |
2164 | ||
2165 | nla_nest_end(msg, nl_reg_rule); | |
2166 | } | |
2167 | ||
2168 | nla_nest_end(msg, nl_reg_rules); | |
2169 | ||
2170 | genlmsg_end(msg, hdr); | |
2171 | err = genlmsg_unicast(msg, info->snd_pid); | |
2172 | goto out; | |
2173 | ||
2174 | nla_put_failure: | |
2175 | genlmsg_cancel(msg, hdr); | |
2176 | err = -EMSGSIZE; | |
2177 | out: | |
2178 | mutex_unlock(&cfg80211_drv_mutex); | |
2179 | return err; | |
2180 | } | |
2181 | ||
b2e1b302 LR |
2182 | static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) |
2183 | { | |
2184 | struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; | |
2185 | struct nlattr *nl_reg_rule; | |
2186 | char *alpha2 = NULL; | |
2187 | int rem_reg_rules = 0, r = 0; | |
2188 | u32 num_rules = 0, rule_idx = 0, size_of_regd; | |
2189 | struct ieee80211_regdomain *rd = NULL; | |
2190 | ||
2191 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
2192 | return -EINVAL; | |
2193 | ||
2194 | if (!info->attrs[NL80211_ATTR_REG_RULES]) | |
2195 | return -EINVAL; | |
2196 | ||
2197 | alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
2198 | ||
2199 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
2200 | rem_reg_rules) { | |
2201 | num_rules++; | |
2202 | if (num_rules > NL80211_MAX_SUPP_REG_RULES) | |
2203 | goto bad_reg; | |
2204 | } | |
2205 | ||
2206 | if (!reg_is_valid_request(alpha2)) | |
2207 | return -EINVAL; | |
2208 | ||
2209 | size_of_regd = sizeof(struct ieee80211_regdomain) + | |
2210 | (num_rules * sizeof(struct ieee80211_reg_rule)); | |
2211 | ||
2212 | rd = kzalloc(size_of_regd, GFP_KERNEL); | |
2213 | if (!rd) | |
2214 | return -ENOMEM; | |
2215 | ||
2216 | rd->n_reg_rules = num_rules; | |
2217 | rd->alpha2[0] = alpha2[0]; | |
2218 | rd->alpha2[1] = alpha2[1]; | |
2219 | ||
2220 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
2221 | rem_reg_rules) { | |
2222 | nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, | |
2223 | nla_data(nl_reg_rule), nla_len(nl_reg_rule), | |
2224 | reg_rule_policy); | |
2225 | r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); | |
2226 | if (r) | |
2227 | goto bad_reg; | |
2228 | ||
2229 | rule_idx++; | |
2230 | ||
2231 | if (rule_idx > NL80211_MAX_SUPP_REG_RULES) | |
2232 | goto bad_reg; | |
2233 | } | |
2234 | ||
2235 | BUG_ON(rule_idx != num_rules); | |
2236 | ||
2237 | mutex_lock(&cfg80211_drv_mutex); | |
2238 | r = set_regdom(rd); | |
2239 | mutex_unlock(&cfg80211_drv_mutex); | |
b2e1b302 LR |
2240 | return r; |
2241 | ||
d2372b31 | 2242 | bad_reg: |
b2e1b302 LR |
2243 | kfree(rd); |
2244 | return -EINVAL; | |
2245 | } | |
2246 | ||
9aed3cc1 JM |
2247 | static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb, |
2248 | struct genl_info *info) | |
2249 | { | |
2250 | struct cfg80211_registered_device *drv; | |
2251 | int err; | |
2252 | struct net_device *dev; | |
2253 | struct mgmt_extra_ie_params params; | |
2254 | ||
2255 | memset(¶ms, 0, sizeof(params)); | |
2256 | ||
2257 | if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) | |
2258 | return -EINVAL; | |
2259 | params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); | |
2260 | if (params.subtype > 15) | |
2261 | return -EINVAL; /* FC Subtype field is 4 bits (0..15) */ | |
2262 | ||
2263 | if (info->attrs[NL80211_ATTR_IE]) { | |
2264 | params.ies = nla_data(info->attrs[NL80211_ATTR_IE]); | |
2265 | params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
2266 | } | |
2267 | ||
2268 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
2269 | if (err) | |
2270 | return err; | |
2271 | ||
2272 | if (drv->ops->set_mgmt_extra_ie) { | |
2273 | rtnl_lock(); | |
2274 | err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, ¶ms); | |
2275 | rtnl_unlock(); | |
2276 | } else | |
2277 | err = -EOPNOTSUPP; | |
2278 | ||
2279 | cfg80211_put_dev(drv); | |
2280 | dev_put(dev); | |
2281 | return err; | |
2282 | } | |
2283 | ||
2a519311 JB |
2284 | static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) |
2285 | { | |
2286 | struct cfg80211_registered_device *drv; | |
2287 | struct net_device *dev; | |
2288 | struct cfg80211_scan_request *request; | |
2289 | struct cfg80211_ssid *ssid; | |
2290 | struct ieee80211_channel *channel; | |
2291 | struct nlattr *attr; | |
2292 | struct wiphy *wiphy; | |
2293 | int err, tmp, n_ssids = 0, n_channels = 0, i; | |
2294 | enum ieee80211_band band; | |
70692ad2 | 2295 | size_t ie_len; |
2a519311 JB |
2296 | |
2297 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
2298 | if (err) | |
2299 | return err; | |
2300 | ||
2301 | wiphy = &drv->wiphy; | |
2302 | ||
2303 | if (!drv->ops->scan) { | |
2304 | err = -EOPNOTSUPP; | |
2305 | goto out; | |
2306 | } | |
2307 | ||
2308 | rtnl_lock(); | |
2309 | ||
2310 | if (drv->scan_req) { | |
2311 | err = -EBUSY; | |
2312 | goto out_unlock; | |
2313 | } | |
2314 | ||
2315 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { | |
2316 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) | |
2317 | n_channels++; | |
2318 | if (!n_channels) { | |
2319 | err = -EINVAL; | |
2320 | goto out_unlock; | |
2321 | } | |
2322 | } else { | |
2323 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) | |
2324 | if (wiphy->bands[band]) | |
2325 | n_channels += wiphy->bands[band]->n_channels; | |
2326 | } | |
2327 | ||
2328 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) | |
2329 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) | |
2330 | n_ssids++; | |
2331 | ||
2332 | if (n_ssids > wiphy->max_scan_ssids) { | |
2333 | err = -EINVAL; | |
2334 | goto out_unlock; | |
2335 | } | |
2336 | ||
70692ad2 JM |
2337 | if (info->attrs[NL80211_ATTR_IE]) |
2338 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
2339 | else | |
2340 | ie_len = 0; | |
2341 | ||
2a519311 JB |
2342 | request = kzalloc(sizeof(*request) |
2343 | + sizeof(*ssid) * n_ssids | |
70692ad2 JM |
2344 | + sizeof(channel) * n_channels |
2345 | + ie_len, GFP_KERNEL); | |
2a519311 JB |
2346 | if (!request) { |
2347 | err = -ENOMEM; | |
2348 | goto out_unlock; | |
2349 | } | |
2350 | ||
2351 | request->channels = (void *)((char *)request + sizeof(*request)); | |
2352 | request->n_channels = n_channels; | |
2353 | if (n_ssids) | |
2354 | request->ssids = (void *)(request->channels + n_channels); | |
2355 | request->n_ssids = n_ssids; | |
70692ad2 JM |
2356 | if (ie_len) { |
2357 | if (request->ssids) | |
2358 | request->ie = (void *)(request->ssids + n_ssids); | |
2359 | else | |
2360 | request->ie = (void *)(request->channels + n_channels); | |
2361 | } | |
2a519311 JB |
2362 | |
2363 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { | |
2364 | /* user specified, bail out if channel not found */ | |
2365 | request->n_channels = n_channels; | |
2366 | i = 0; | |
2367 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { | |
2368 | request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr)); | |
2369 | if (!request->channels[i]) { | |
2370 | err = -EINVAL; | |
2371 | goto out_free; | |
2372 | } | |
2373 | i++; | |
2374 | } | |
2375 | } else { | |
2376 | /* all channels */ | |
2377 | i = 0; | |
2378 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
2379 | int j; | |
2380 | if (!wiphy->bands[band]) | |
2381 | continue; | |
2382 | for (j = 0; j < wiphy->bands[band]->n_channels; j++) { | |
2383 | request->channels[i] = &wiphy->bands[band]->channels[j]; | |
2384 | i++; | |
2385 | } | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | i = 0; | |
2390 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { | |
2391 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { | |
2392 | if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) { | |
2393 | err = -EINVAL; | |
2394 | goto out_free; | |
2395 | } | |
2396 | memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); | |
2397 | request->ssids[i].ssid_len = nla_len(attr); | |
2398 | i++; | |
2399 | } | |
2400 | } | |
2401 | ||
70692ad2 JM |
2402 | if (info->attrs[NL80211_ATTR_IE]) { |
2403 | request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
2404 | memcpy(request->ie, nla_data(info->attrs[NL80211_ATTR_IE]), | |
2405 | request->ie_len); | |
2406 | } | |
2407 | ||
2a519311 JB |
2408 | request->ifidx = dev->ifindex; |
2409 | request->wiphy = &drv->wiphy; | |
2410 | ||
2411 | drv->scan_req = request; | |
2412 | err = drv->ops->scan(&drv->wiphy, dev, request); | |
2413 | ||
2414 | out_free: | |
2415 | if (err) { | |
2416 | drv->scan_req = NULL; | |
2417 | kfree(request); | |
2418 | } | |
2419 | out_unlock: | |
2420 | rtnl_unlock(); | |
2421 | out: | |
2422 | cfg80211_put_dev(drv); | |
2423 | dev_put(dev); | |
2424 | return err; | |
2425 | } | |
2426 | ||
2427 | static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
2428 | struct cfg80211_registered_device *rdev, | |
2429 | struct net_device *dev, | |
2430 | struct cfg80211_bss *res) | |
2431 | { | |
2432 | void *hdr; | |
2433 | struct nlattr *bss; | |
2434 | ||
2435 | hdr = nl80211hdr_put(msg, pid, seq, flags, | |
2436 | NL80211_CMD_NEW_SCAN_RESULTS); | |
2437 | if (!hdr) | |
2438 | return -1; | |
2439 | ||
2440 | NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION, | |
2441 | rdev->bss_generation); | |
2442 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
2443 | ||
2444 | bss = nla_nest_start(msg, NL80211_ATTR_BSS); | |
2445 | if (!bss) | |
2446 | goto nla_put_failure; | |
2447 | if (!is_zero_ether_addr(res->bssid)) | |
2448 | NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); | |
2449 | if (res->information_elements && res->len_information_elements) | |
2450 | NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, | |
2451 | res->len_information_elements, | |
2452 | res->information_elements); | |
2453 | if (res->tsf) | |
2454 | NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); | |
2455 | if (res->beacon_interval) | |
2456 | NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); | |
2457 | NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); | |
2458 | NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); | |
2459 | ||
77965c97 | 2460 | switch (rdev->wiphy.signal_type) { |
2a519311 JB |
2461 | case CFG80211_SIGNAL_TYPE_MBM: |
2462 | NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); | |
2463 | break; | |
2464 | case CFG80211_SIGNAL_TYPE_UNSPEC: | |
2465 | NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); | |
2466 | break; | |
2467 | default: | |
2468 | break; | |
2469 | } | |
2470 | ||
2471 | nla_nest_end(msg, bss); | |
2472 | ||
2473 | return genlmsg_end(msg, hdr); | |
2474 | ||
2475 | nla_put_failure: | |
2476 | genlmsg_cancel(msg, hdr); | |
2477 | return -EMSGSIZE; | |
2478 | } | |
2479 | ||
2480 | static int nl80211_dump_scan(struct sk_buff *skb, | |
2481 | struct netlink_callback *cb) | |
2482 | { | |
2483 | struct cfg80211_registered_device *dev; | |
2484 | struct net_device *netdev; | |
2485 | struct cfg80211_internal_bss *scan; | |
2486 | int ifidx = cb->args[0]; | |
2487 | int start = cb->args[1], idx = 0; | |
2488 | int err; | |
2489 | ||
2490 | if (!ifidx) { | |
2491 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
2492 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
2493 | nl80211_policy); | |
2494 | if (err) | |
2495 | return err; | |
2496 | ||
2497 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
2498 | return -EINVAL; | |
2499 | ||
2500 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
2501 | if (!ifidx) | |
2502 | return -EINVAL; | |
2503 | cb->args[0] = ifidx; | |
2504 | } | |
2505 | ||
2506 | netdev = dev_get_by_index(&init_net, ifidx); | |
2507 | if (!netdev) | |
2508 | return -ENODEV; | |
2509 | ||
2510 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
2511 | if (IS_ERR(dev)) { | |
2512 | err = PTR_ERR(dev); | |
2513 | goto out_put_netdev; | |
2514 | } | |
2515 | ||
2516 | spin_lock_bh(&dev->bss_lock); | |
2517 | cfg80211_bss_expire(dev); | |
2518 | ||
2519 | list_for_each_entry(scan, &dev->bss_list, list) { | |
2520 | if (++idx <= start) | |
2521 | continue; | |
2522 | if (nl80211_send_bss(skb, | |
2523 | NETLINK_CB(cb->skb).pid, | |
2524 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
2525 | dev, netdev, &scan->pub) < 0) { | |
2526 | idx--; | |
2527 | goto out; | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | out: | |
2532 | spin_unlock_bh(&dev->bss_lock); | |
2533 | ||
2534 | cb->args[1] = idx; | |
2535 | err = skb->len; | |
2536 | cfg80211_put_dev(dev); | |
2537 | out_put_netdev: | |
2538 | dev_put(netdev); | |
2539 | ||
2540 | return err; | |
2541 | } | |
2542 | ||
55682965 JB |
2543 | static struct genl_ops nl80211_ops[] = { |
2544 | { | |
2545 | .cmd = NL80211_CMD_GET_WIPHY, | |
2546 | .doit = nl80211_get_wiphy, | |
2547 | .dumpit = nl80211_dump_wiphy, | |
2548 | .policy = nl80211_policy, | |
2549 | /* can be retrieved by unprivileged users */ | |
2550 | }, | |
2551 | { | |
2552 | .cmd = NL80211_CMD_SET_WIPHY, | |
2553 | .doit = nl80211_set_wiphy, | |
2554 | .policy = nl80211_policy, | |
2555 | .flags = GENL_ADMIN_PERM, | |
2556 | }, | |
2557 | { | |
2558 | .cmd = NL80211_CMD_GET_INTERFACE, | |
2559 | .doit = nl80211_get_interface, | |
2560 | .dumpit = nl80211_dump_interface, | |
2561 | .policy = nl80211_policy, | |
2562 | /* can be retrieved by unprivileged users */ | |
2563 | }, | |
2564 | { | |
2565 | .cmd = NL80211_CMD_SET_INTERFACE, | |
2566 | .doit = nl80211_set_interface, | |
2567 | .policy = nl80211_policy, | |
2568 | .flags = GENL_ADMIN_PERM, | |
2569 | }, | |
2570 | { | |
2571 | .cmd = NL80211_CMD_NEW_INTERFACE, | |
2572 | .doit = nl80211_new_interface, | |
2573 | .policy = nl80211_policy, | |
2574 | .flags = GENL_ADMIN_PERM, | |
2575 | }, | |
2576 | { | |
2577 | .cmd = NL80211_CMD_DEL_INTERFACE, | |
2578 | .doit = nl80211_del_interface, | |
2579 | .policy = nl80211_policy, | |
41ade00f JB |
2580 | .flags = GENL_ADMIN_PERM, |
2581 | }, | |
2582 | { | |
2583 | .cmd = NL80211_CMD_GET_KEY, | |
2584 | .doit = nl80211_get_key, | |
2585 | .policy = nl80211_policy, | |
2586 | .flags = GENL_ADMIN_PERM, | |
2587 | }, | |
2588 | { | |
2589 | .cmd = NL80211_CMD_SET_KEY, | |
2590 | .doit = nl80211_set_key, | |
2591 | .policy = nl80211_policy, | |
2592 | .flags = GENL_ADMIN_PERM, | |
2593 | }, | |
2594 | { | |
2595 | .cmd = NL80211_CMD_NEW_KEY, | |
2596 | .doit = nl80211_new_key, | |
2597 | .policy = nl80211_policy, | |
2598 | .flags = GENL_ADMIN_PERM, | |
2599 | }, | |
2600 | { | |
2601 | .cmd = NL80211_CMD_DEL_KEY, | |
2602 | .doit = nl80211_del_key, | |
2603 | .policy = nl80211_policy, | |
55682965 JB |
2604 | .flags = GENL_ADMIN_PERM, |
2605 | }, | |
ed1b6cc7 JB |
2606 | { |
2607 | .cmd = NL80211_CMD_SET_BEACON, | |
2608 | .policy = nl80211_policy, | |
2609 | .flags = GENL_ADMIN_PERM, | |
2610 | .doit = nl80211_addset_beacon, | |
2611 | }, | |
2612 | { | |
2613 | .cmd = NL80211_CMD_NEW_BEACON, | |
2614 | .policy = nl80211_policy, | |
2615 | .flags = GENL_ADMIN_PERM, | |
2616 | .doit = nl80211_addset_beacon, | |
2617 | }, | |
2618 | { | |
2619 | .cmd = NL80211_CMD_DEL_BEACON, | |
2620 | .policy = nl80211_policy, | |
2621 | .flags = GENL_ADMIN_PERM, | |
2622 | .doit = nl80211_del_beacon, | |
2623 | }, | |
5727ef1b JB |
2624 | { |
2625 | .cmd = NL80211_CMD_GET_STATION, | |
2626 | .doit = nl80211_get_station, | |
2ec600d6 | 2627 | .dumpit = nl80211_dump_station, |
5727ef1b | 2628 | .policy = nl80211_policy, |
5727ef1b JB |
2629 | }, |
2630 | { | |
2631 | .cmd = NL80211_CMD_SET_STATION, | |
2632 | .doit = nl80211_set_station, | |
2633 | .policy = nl80211_policy, | |
2634 | .flags = GENL_ADMIN_PERM, | |
2635 | }, | |
2636 | { | |
2637 | .cmd = NL80211_CMD_NEW_STATION, | |
2638 | .doit = nl80211_new_station, | |
2639 | .policy = nl80211_policy, | |
2640 | .flags = GENL_ADMIN_PERM, | |
2641 | }, | |
2642 | { | |
2643 | .cmd = NL80211_CMD_DEL_STATION, | |
2644 | .doit = nl80211_del_station, | |
2645 | .policy = nl80211_policy, | |
2ec600d6 LCC |
2646 | .flags = GENL_ADMIN_PERM, |
2647 | }, | |
2648 | { | |
2649 | .cmd = NL80211_CMD_GET_MPATH, | |
2650 | .doit = nl80211_get_mpath, | |
2651 | .dumpit = nl80211_dump_mpath, | |
2652 | .policy = nl80211_policy, | |
2653 | .flags = GENL_ADMIN_PERM, | |
2654 | }, | |
2655 | { | |
2656 | .cmd = NL80211_CMD_SET_MPATH, | |
2657 | .doit = nl80211_set_mpath, | |
2658 | .policy = nl80211_policy, | |
2659 | .flags = GENL_ADMIN_PERM, | |
2660 | }, | |
2661 | { | |
2662 | .cmd = NL80211_CMD_NEW_MPATH, | |
2663 | .doit = nl80211_new_mpath, | |
2664 | .policy = nl80211_policy, | |
2665 | .flags = GENL_ADMIN_PERM, | |
2666 | }, | |
2667 | { | |
2668 | .cmd = NL80211_CMD_DEL_MPATH, | |
2669 | .doit = nl80211_del_mpath, | |
2670 | .policy = nl80211_policy, | |
9f1ba906 JM |
2671 | .flags = GENL_ADMIN_PERM, |
2672 | }, | |
2673 | { | |
2674 | .cmd = NL80211_CMD_SET_BSS, | |
2675 | .doit = nl80211_set_bss, | |
2676 | .policy = nl80211_policy, | |
b2e1b302 LR |
2677 | .flags = GENL_ADMIN_PERM, |
2678 | }, | |
f130347c LR |
2679 | { |
2680 | .cmd = NL80211_CMD_GET_REG, | |
2681 | .doit = nl80211_get_reg, | |
2682 | .policy = nl80211_policy, | |
2683 | /* can be retrieved by unprivileged users */ | |
2684 | }, | |
b2e1b302 LR |
2685 | { |
2686 | .cmd = NL80211_CMD_SET_REG, | |
2687 | .doit = nl80211_set_reg, | |
2688 | .policy = nl80211_policy, | |
2689 | .flags = GENL_ADMIN_PERM, | |
2690 | }, | |
2691 | { | |
2692 | .cmd = NL80211_CMD_REQ_SET_REG, | |
2693 | .doit = nl80211_req_set_reg, | |
2694 | .policy = nl80211_policy, | |
93da9cc1 | 2695 | .flags = GENL_ADMIN_PERM, |
2696 | }, | |
2697 | { | |
2698 | .cmd = NL80211_CMD_GET_MESH_PARAMS, | |
2699 | .doit = nl80211_get_mesh_params, | |
2700 | .policy = nl80211_policy, | |
2701 | /* can be retrieved by unprivileged users */ | |
2702 | }, | |
2703 | { | |
2704 | .cmd = NL80211_CMD_SET_MESH_PARAMS, | |
2705 | .doit = nl80211_set_mesh_params, | |
2706 | .policy = nl80211_policy, | |
9aed3cc1 JM |
2707 | .flags = GENL_ADMIN_PERM, |
2708 | }, | |
2709 | { | |
2710 | .cmd = NL80211_CMD_SET_MGMT_EXTRA_IE, | |
2711 | .doit = nl80211_set_mgmt_extra_ie, | |
2712 | .policy = nl80211_policy, | |
5727ef1b JB |
2713 | .flags = GENL_ADMIN_PERM, |
2714 | }, | |
2a519311 JB |
2715 | { |
2716 | .cmd = NL80211_CMD_TRIGGER_SCAN, | |
2717 | .doit = nl80211_trigger_scan, | |
2718 | .policy = nl80211_policy, | |
2719 | .flags = GENL_ADMIN_PERM, | |
2720 | }, | |
2721 | { | |
2722 | .cmd = NL80211_CMD_GET_SCAN, | |
2723 | .policy = nl80211_policy, | |
2724 | .dumpit = nl80211_dump_scan, | |
2725 | }, | |
55682965 JB |
2726 | }; |
2727 | ||
2728 | /* multicast groups */ | |
2729 | static struct genl_multicast_group nl80211_config_mcgrp = { | |
2730 | .name = "config", | |
2731 | }; | |
2a519311 JB |
2732 | static struct genl_multicast_group nl80211_scan_mcgrp = { |
2733 | .name = "scan", | |
2734 | }; | |
55682965 JB |
2735 | |
2736 | /* notification functions */ | |
2737 | ||
2738 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) | |
2739 | { | |
2740 | struct sk_buff *msg; | |
2741 | ||
2742 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2743 | if (!msg) | |
2744 | return; | |
2745 | ||
2746 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { | |
2747 | nlmsg_free(msg); | |
2748 | return; | |
2749 | } | |
2750 | ||
2751 | genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); | |
2752 | } | |
2753 | ||
2a519311 JB |
2754 | static int nl80211_send_scan_donemsg(struct sk_buff *msg, |
2755 | struct cfg80211_registered_device *rdev, | |
2756 | struct net_device *netdev, | |
2757 | u32 pid, u32 seq, int flags, | |
2758 | u32 cmd) | |
2759 | { | |
2760 | void *hdr; | |
2761 | ||
2762 | hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); | |
2763 | if (!hdr) | |
2764 | return -1; | |
2765 | ||
2766 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->idx); | |
2767 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
2768 | ||
2769 | /* XXX: we should probably bounce back the request? */ | |
2770 | ||
2771 | return genlmsg_end(msg, hdr); | |
2772 | ||
2773 | nla_put_failure: | |
2774 | genlmsg_cancel(msg, hdr); | |
2775 | return -EMSGSIZE; | |
2776 | } | |
2777 | ||
2778 | void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, | |
2779 | struct net_device *netdev) | |
2780 | { | |
2781 | struct sk_buff *msg; | |
2782 | ||
2783 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2784 | if (!msg) | |
2785 | return; | |
2786 | ||
2787 | if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, | |
2788 | NL80211_CMD_NEW_SCAN_RESULTS) < 0) { | |
2789 | nlmsg_free(msg); | |
2790 | return; | |
2791 | } | |
2792 | ||
2793 | genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); | |
2794 | } | |
2795 | ||
2796 | void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, | |
2797 | struct net_device *netdev) | |
2798 | { | |
2799 | struct sk_buff *msg; | |
2800 | ||
2801 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2802 | if (!msg) | |
2803 | return; | |
2804 | ||
2805 | if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, | |
2806 | NL80211_CMD_SCAN_ABORTED) < 0) { | |
2807 | nlmsg_free(msg); | |
2808 | return; | |
2809 | } | |
2810 | ||
2811 | genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); | |
2812 | } | |
2813 | ||
55682965 JB |
2814 | /* initialisation/exit functions */ |
2815 | ||
2816 | int nl80211_init(void) | |
2817 | { | |
2818 | int err, i; | |
2819 | ||
2820 | err = genl_register_family(&nl80211_fam); | |
2821 | if (err) | |
2822 | return err; | |
2823 | ||
2824 | for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { | |
2825 | err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); | |
2826 | if (err) | |
2827 | goto err_out; | |
2828 | } | |
2829 | ||
2830 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); | |
2831 | if (err) | |
2832 | goto err_out; | |
2833 | ||
2a519311 JB |
2834 | err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); |
2835 | if (err) | |
2836 | goto err_out; | |
2837 | ||
55682965 JB |
2838 | return 0; |
2839 | err_out: | |
2840 | genl_unregister_family(&nl80211_fam); | |
2841 | return err; | |
2842 | } | |
2843 | ||
2844 | void nl80211_exit(void) | |
2845 | { | |
2846 | genl_unregister_family(&nl80211_fam); | |
2847 | } |