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> | |
55682965 JB |
10 | #include <linux/list.h> |
11 | #include <linux/if_ether.h> | |
12 | #include <linux/ieee80211.h> | |
13 | #include <linux/nl80211.h> | |
14 | #include <linux/rtnetlink.h> | |
15 | #include <linux/netlink.h> | |
2a519311 | 16 | #include <linux/etherdevice.h> |
55682965 JB |
17 | #include <net/genetlink.h> |
18 | #include <net/cfg80211.h> | |
19 | #include "core.h" | |
20 | #include "nl80211.h" | |
b2e1b302 | 21 | #include "reg.h" |
55682965 JB |
22 | |
23 | /* the netlink family */ | |
24 | static struct genl_family nl80211_fam = { | |
25 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ | |
26 | .name = "nl80211", /* have users key off the name instead */ | |
27 | .hdrsize = 0, /* no private header */ | |
28 | .version = 1, /* no particular meaning now */ | |
29 | .maxattr = NL80211_ATTR_MAX, | |
30 | }; | |
31 | ||
32 | /* internal helper: get drv and dev */ | |
bba95fef | 33 | static int get_drv_dev_by_info_ifindex(struct nlattr **attrs, |
55682965 JB |
34 | struct cfg80211_registered_device **drv, |
35 | struct net_device **dev) | |
36 | { | |
37 | int ifindex; | |
38 | ||
bba95fef | 39 | if (!attrs[NL80211_ATTR_IFINDEX]) |
55682965 JB |
40 | return -EINVAL; |
41 | ||
bba95fef | 42 | ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); |
55682965 JB |
43 | *dev = dev_get_by_index(&init_net, ifindex); |
44 | if (!*dev) | |
45 | return -ENODEV; | |
46 | ||
47 | *drv = cfg80211_get_dev_from_ifindex(ifindex); | |
48 | if (IS_ERR(*drv)) { | |
49 | dev_put(*dev); | |
50 | return PTR_ERR(*drv); | |
51 | } | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
56 | /* policy for the attributes */ | |
57 | static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { | |
58 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, | |
59 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, | |
60 | .len = BUS_ID_SIZE-1 }, | |
31888487 | 61 | [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, |
72bdcf34 | 62 | [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, |
094d05dc | 63 | [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, |
55682965 JB |
64 | |
65 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, | |
66 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, | |
67 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, | |
41ade00f JB |
68 | |
69 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, | |
70 | ||
71 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, | |
72 | .len = WLAN_MAX_KEY_LEN }, | |
73 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, | |
74 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, | |
75 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, | |
ed1b6cc7 JB |
76 | |
77 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, | |
78 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, | |
79 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, | |
80 | .len = IEEE80211_MAX_DATA_LEN }, | |
81 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, | |
82 | .len = IEEE80211_MAX_DATA_LEN }, | |
5727ef1b JB |
83 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, |
84 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, | |
85 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, | |
86 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, | |
87 | .len = NL80211_MAX_SUPP_RATES }, | |
2ec600d6 | 88 | [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, |
5727ef1b | 89 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, |
0a9542ee | 90 | [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, |
2ec600d6 LCC |
91 | [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, |
92 | .len = IEEE80211_MAX_MESH_ID_LEN }, | |
93 | [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, | |
9f1ba906 | 94 | |
b2e1b302 LR |
95 | [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, |
96 | [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, | |
97 | ||
9f1ba906 JM |
98 | [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, |
99 | [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, | |
100 | [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, | |
90c97a04 JM |
101 | [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, |
102 | .len = NL80211_MAX_SUPP_RATES }, | |
36aedc90 | 103 | |
93da9cc1 | 104 | [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED }, |
105 | ||
36aedc90 JM |
106 | [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, |
107 | .len = NL80211_HT_CAPABILITY_LEN }, | |
9aed3cc1 JM |
108 | |
109 | [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, | |
110 | [NL80211_ATTR_IE] = { .type = NLA_BINARY, | |
111 | .len = IEEE80211_MAX_DATA_LEN }, | |
2a519311 JB |
112 | [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, |
113 | [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, | |
55682965 JB |
114 | }; |
115 | ||
116 | /* message building helper */ | |
117 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, | |
118 | int flags, u8 cmd) | |
119 | { | |
120 | /* since there is no private header just add the generic one */ | |
121 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); | |
122 | } | |
123 | ||
124 | /* netlink command implementations */ | |
125 | ||
126 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
127 | struct cfg80211_registered_device *dev) | |
128 | { | |
129 | void *hdr; | |
ee688b00 JB |
130 | struct nlattr *nl_bands, *nl_band; |
131 | struct nlattr *nl_freqs, *nl_freq; | |
132 | struct nlattr *nl_rates, *nl_rate; | |
f59ac048 | 133 | struct nlattr *nl_modes; |
ee688b00 JB |
134 | enum ieee80211_band band; |
135 | struct ieee80211_channel *chan; | |
136 | struct ieee80211_rate *rate; | |
137 | int i; | |
f59ac048 | 138 | u16 ifmodes = dev->wiphy.interface_modes; |
55682965 | 139 | |
761cf7ec LR |
140 | assert_cfg80211_lock(); |
141 | ||
55682965 JB |
142 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); |
143 | if (!hdr) | |
144 | return -1; | |
145 | ||
b5850a7a | 146 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx); |
55682965 | 147 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); |
2a519311 JB |
148 | NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, |
149 | dev->wiphy.max_scan_ssids); | |
ee688b00 | 150 | |
f59ac048 LR |
151 | nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); |
152 | if (!nl_modes) | |
153 | goto nla_put_failure; | |
154 | ||
155 | i = 0; | |
156 | while (ifmodes) { | |
157 | if (ifmodes & 1) | |
158 | NLA_PUT_FLAG(msg, i); | |
159 | ifmodes >>= 1; | |
160 | i++; | |
161 | } | |
162 | ||
163 | nla_nest_end(msg, nl_modes); | |
164 | ||
ee688b00 JB |
165 | nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); |
166 | if (!nl_bands) | |
167 | goto nla_put_failure; | |
168 | ||
169 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
170 | if (!dev->wiphy.bands[band]) | |
171 | continue; | |
172 | ||
173 | nl_band = nla_nest_start(msg, band); | |
174 | if (!nl_band) | |
175 | goto nla_put_failure; | |
176 | ||
d51626df JB |
177 | /* add HT info */ |
178 | if (dev->wiphy.bands[band]->ht_cap.ht_supported) { | |
179 | NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET, | |
180 | sizeof(dev->wiphy.bands[band]->ht_cap.mcs), | |
181 | &dev->wiphy.bands[band]->ht_cap.mcs); | |
182 | NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA, | |
183 | dev->wiphy.bands[band]->ht_cap.cap); | |
184 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, | |
185 | dev->wiphy.bands[band]->ht_cap.ampdu_factor); | |
186 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, | |
187 | dev->wiphy.bands[band]->ht_cap.ampdu_density); | |
188 | } | |
189 | ||
ee688b00 JB |
190 | /* add frequencies */ |
191 | nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); | |
192 | if (!nl_freqs) | |
193 | goto nla_put_failure; | |
194 | ||
195 | for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { | |
196 | nl_freq = nla_nest_start(msg, i); | |
197 | if (!nl_freq) | |
198 | goto nla_put_failure; | |
199 | ||
200 | chan = &dev->wiphy.bands[band]->channels[i]; | |
201 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, | |
202 | chan->center_freq); | |
203 | ||
204 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
205 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); | |
206 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
207 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); | |
208 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) | |
209 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); | |
210 | if (chan->flags & IEEE80211_CHAN_RADAR) | |
211 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); | |
212 | ||
bf8c1ac6 JM |
213 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, |
214 | DBM_TO_MBM(chan->max_power)); | |
e2f367f2 | 215 | |
ee688b00 JB |
216 | nla_nest_end(msg, nl_freq); |
217 | } | |
218 | ||
219 | nla_nest_end(msg, nl_freqs); | |
220 | ||
221 | /* add bitrates */ | |
222 | nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); | |
223 | if (!nl_rates) | |
224 | goto nla_put_failure; | |
225 | ||
226 | for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { | |
227 | nl_rate = nla_nest_start(msg, i); | |
228 | if (!nl_rate) | |
229 | goto nla_put_failure; | |
230 | ||
231 | rate = &dev->wiphy.bands[band]->bitrates[i]; | |
232 | NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, | |
233 | rate->bitrate); | |
234 | if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) | |
235 | NLA_PUT_FLAG(msg, | |
236 | NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); | |
237 | ||
238 | nla_nest_end(msg, nl_rate); | |
239 | } | |
240 | ||
241 | nla_nest_end(msg, nl_rates); | |
242 | ||
243 | nla_nest_end(msg, nl_band); | |
244 | } | |
245 | nla_nest_end(msg, nl_bands); | |
246 | ||
55682965 JB |
247 | return genlmsg_end(msg, hdr); |
248 | ||
249 | nla_put_failure: | |
bc3ed28c TG |
250 | genlmsg_cancel(msg, hdr); |
251 | return -EMSGSIZE; | |
55682965 JB |
252 | } |
253 | ||
254 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) | |
255 | { | |
256 | int idx = 0; | |
257 | int start = cb->args[0]; | |
258 | struct cfg80211_registered_device *dev; | |
259 | ||
a1794390 | 260 | mutex_lock(&cfg80211_mutex); |
55682965 | 261 | list_for_each_entry(dev, &cfg80211_drv_list, list) { |
b4637271 | 262 | if (++idx <= start) |
55682965 JB |
263 | continue; |
264 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, | |
265 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
b4637271 JV |
266 | dev) < 0) { |
267 | idx--; | |
55682965 | 268 | break; |
b4637271 | 269 | } |
55682965 | 270 | } |
a1794390 | 271 | mutex_unlock(&cfg80211_mutex); |
55682965 JB |
272 | |
273 | cb->args[0] = idx; | |
274 | ||
275 | return skb->len; | |
276 | } | |
277 | ||
278 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) | |
279 | { | |
280 | struct sk_buff *msg; | |
281 | struct cfg80211_registered_device *dev; | |
282 | ||
283 | dev = cfg80211_get_dev_from_info(info); | |
284 | if (IS_ERR(dev)) | |
285 | return PTR_ERR(dev); | |
286 | ||
287 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
288 | if (!msg) | |
289 | goto out_err; | |
290 | ||
291 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) | |
292 | goto out_free; | |
293 | ||
294 | cfg80211_put_dev(dev); | |
295 | ||
296 | return genlmsg_unicast(msg, info->snd_pid); | |
297 | ||
298 | out_free: | |
299 | nlmsg_free(msg); | |
300 | out_err: | |
301 | cfg80211_put_dev(dev); | |
302 | return -ENOBUFS; | |
303 | } | |
304 | ||
31888487 JM |
305 | static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { |
306 | [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, | |
307 | [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, | |
308 | [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, | |
309 | [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, | |
310 | [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, | |
311 | }; | |
312 | ||
313 | static int parse_txq_params(struct nlattr *tb[], | |
314 | struct ieee80211_txq_params *txq_params) | |
315 | { | |
316 | if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] || | |
317 | !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || | |
318 | !tb[NL80211_TXQ_ATTR_AIFS]) | |
319 | return -EINVAL; | |
320 | ||
321 | txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]); | |
322 | txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); | |
323 | txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); | |
324 | txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); | |
325 | txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
55682965 JB |
330 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) |
331 | { | |
332 | struct cfg80211_registered_device *rdev; | |
31888487 JM |
333 | int result = 0, rem_txq_params = 0; |
334 | struct nlattr *nl_txq_params; | |
55682965 JB |
335 | |
336 | rdev = cfg80211_get_dev_from_info(info); | |
337 | if (IS_ERR(rdev)) | |
338 | return PTR_ERR(rdev); | |
339 | ||
31888487 JM |
340 | if (info->attrs[NL80211_ATTR_WIPHY_NAME]) { |
341 | result = cfg80211_dev_rename( | |
342 | rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); | |
343 | if (result) | |
344 | goto bad_res; | |
345 | } | |
346 | ||
347 | if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { | |
348 | struct ieee80211_txq_params txq_params; | |
349 | struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; | |
350 | ||
351 | if (!rdev->ops->set_txq_params) { | |
352 | result = -EOPNOTSUPP; | |
353 | goto bad_res; | |
354 | } | |
355 | ||
356 | nla_for_each_nested(nl_txq_params, | |
357 | info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], | |
358 | rem_txq_params) { | |
359 | nla_parse(tb, NL80211_TXQ_ATTR_MAX, | |
360 | nla_data(nl_txq_params), | |
361 | nla_len(nl_txq_params), | |
362 | txq_params_policy); | |
363 | result = parse_txq_params(tb, &txq_params); | |
364 | if (result) | |
365 | goto bad_res; | |
366 | ||
367 | result = rdev->ops->set_txq_params(&rdev->wiphy, | |
368 | &txq_params); | |
369 | if (result) | |
370 | goto bad_res; | |
371 | } | |
372 | } | |
55682965 | 373 | |
72bdcf34 | 374 | if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
094d05dc | 375 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 376 | struct ieee80211_channel *chan; |
306d6112 | 377 | struct ieee80211_sta_ht_cap *ht_cap; |
72bdcf34 JM |
378 | u32 freq, sec_freq; |
379 | ||
380 | if (!rdev->ops->set_channel) { | |
381 | result = -EOPNOTSUPP; | |
382 | goto bad_res; | |
383 | } | |
384 | ||
306d6112 JB |
385 | result = -EINVAL; |
386 | ||
094d05dc S |
387 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { |
388 | channel_type = nla_get_u32(info->attrs[ | |
389 | NL80211_ATTR_WIPHY_CHANNEL_TYPE]); | |
390 | if (channel_type != NL80211_CHAN_NO_HT && | |
391 | channel_type != NL80211_CHAN_HT20 && | |
392 | channel_type != NL80211_CHAN_HT40PLUS && | |
393 | channel_type != NL80211_CHAN_HT40MINUS) | |
72bdcf34 | 394 | goto bad_res; |
72bdcf34 JM |
395 | } |
396 | ||
397 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); | |
398 | chan = ieee80211_get_channel(&rdev->wiphy, freq); | |
306d6112 JB |
399 | |
400 | /* Primary channel not allowed */ | |
401 | if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) | |
72bdcf34 | 402 | goto bad_res; |
306d6112 | 403 | |
094d05dc | 404 | if (channel_type == NL80211_CHAN_HT40MINUS) |
72bdcf34 | 405 | sec_freq = freq - 20; |
094d05dc | 406 | else if (channel_type == NL80211_CHAN_HT40PLUS) |
72bdcf34 JM |
407 | sec_freq = freq + 20; |
408 | else | |
409 | sec_freq = 0; | |
410 | ||
306d6112 JB |
411 | ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap; |
412 | ||
413 | /* no HT capabilities */ | |
094d05dc | 414 | if (channel_type != NL80211_CHAN_NO_HT && |
306d6112 JB |
415 | !ht_cap->ht_supported) |
416 | goto bad_res; | |
417 | ||
72bdcf34 JM |
418 | if (sec_freq) { |
419 | struct ieee80211_channel *schan; | |
306d6112 JB |
420 | |
421 | /* no 40 MHz capabilities */ | |
422 | if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) || | |
423 | (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)) | |
424 | goto bad_res; | |
425 | ||
72bdcf34 | 426 | schan = ieee80211_get_channel(&rdev->wiphy, sec_freq); |
306d6112 JB |
427 | |
428 | /* Secondary channel not allowed */ | |
429 | if (!schan || schan->flags & IEEE80211_CHAN_DISABLED) | |
72bdcf34 | 430 | goto bad_res; |
72bdcf34 JM |
431 | } |
432 | ||
433 | result = rdev->ops->set_channel(&rdev->wiphy, chan, | |
094d05dc | 434 | channel_type); |
72bdcf34 JM |
435 | if (result) |
436 | goto bad_res; | |
437 | } | |
438 | ||
439 | ||
306d6112 | 440 | bad_res: |
55682965 JB |
441 | cfg80211_put_dev(rdev); |
442 | return result; | |
443 | } | |
444 | ||
445 | ||
446 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
447 | struct net_device *dev) | |
448 | { | |
449 | void *hdr; | |
450 | ||
451 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); | |
452 | if (!hdr) | |
453 | return -1; | |
454 | ||
455 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
456 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); | |
60719ffd | 457 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); |
55682965 JB |
458 | return genlmsg_end(msg, hdr); |
459 | ||
460 | nla_put_failure: | |
bc3ed28c TG |
461 | genlmsg_cancel(msg, hdr); |
462 | return -EMSGSIZE; | |
55682965 JB |
463 | } |
464 | ||
465 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) | |
466 | { | |
467 | int wp_idx = 0; | |
468 | int if_idx = 0; | |
469 | int wp_start = cb->args[0]; | |
470 | int if_start = cb->args[1]; | |
471 | struct cfg80211_registered_device *dev; | |
472 | struct wireless_dev *wdev; | |
473 | ||
a1794390 | 474 | mutex_lock(&cfg80211_mutex); |
55682965 | 475 | list_for_each_entry(dev, &cfg80211_drv_list, list) { |
bba95fef JB |
476 | if (wp_idx < wp_start) { |
477 | wp_idx++; | |
55682965 | 478 | continue; |
bba95fef | 479 | } |
55682965 JB |
480 | if_idx = 0; |
481 | ||
482 | mutex_lock(&dev->devlist_mtx); | |
483 | list_for_each_entry(wdev, &dev->netdev_list, list) { | |
bba95fef JB |
484 | if (if_idx < if_start) { |
485 | if_idx++; | |
55682965 | 486 | continue; |
bba95fef | 487 | } |
55682965 JB |
488 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, |
489 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
bba95fef JB |
490 | wdev->netdev) < 0) { |
491 | mutex_unlock(&dev->devlist_mtx); | |
492 | goto out; | |
493 | } | |
494 | if_idx++; | |
55682965 JB |
495 | } |
496 | mutex_unlock(&dev->devlist_mtx); | |
bba95fef JB |
497 | |
498 | wp_idx++; | |
55682965 | 499 | } |
bba95fef | 500 | out: |
a1794390 | 501 | mutex_unlock(&cfg80211_mutex); |
55682965 JB |
502 | |
503 | cb->args[0] = wp_idx; | |
504 | cb->args[1] = if_idx; | |
505 | ||
506 | return skb->len; | |
507 | } | |
508 | ||
509 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) | |
510 | { | |
511 | struct sk_buff *msg; | |
512 | struct cfg80211_registered_device *dev; | |
513 | struct net_device *netdev; | |
514 | int err; | |
515 | ||
bba95fef | 516 | err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev); |
55682965 JB |
517 | if (err) |
518 | return err; | |
519 | ||
520 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
521 | if (!msg) | |
522 | goto out_err; | |
523 | ||
524 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) | |
525 | goto out_free; | |
526 | ||
527 | dev_put(netdev); | |
528 | cfg80211_put_dev(dev); | |
529 | ||
530 | return genlmsg_unicast(msg, info->snd_pid); | |
531 | ||
532 | out_free: | |
533 | nlmsg_free(msg); | |
534 | out_err: | |
535 | dev_put(netdev); | |
536 | cfg80211_put_dev(dev); | |
537 | return -ENOBUFS; | |
538 | } | |
539 | ||
66f7ac50 MW |
540 | static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { |
541 | [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, | |
542 | [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, | |
543 | [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, | |
544 | [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, | |
545 | [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, | |
546 | }; | |
547 | ||
548 | static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) | |
549 | { | |
550 | struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; | |
551 | int flag; | |
552 | ||
553 | *mntrflags = 0; | |
554 | ||
555 | if (!nla) | |
556 | return -EINVAL; | |
557 | ||
558 | if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, | |
559 | nla, mntr_flags_policy)) | |
560 | return -EINVAL; | |
561 | ||
562 | for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) | |
563 | if (flags[flag]) | |
564 | *mntrflags |= (1<<flag); | |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
55682965 JB |
569 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
570 | { | |
571 | struct cfg80211_registered_device *drv; | |
2ec600d6 | 572 | struct vif_params params; |
55682965 JB |
573 | int err, ifindex; |
574 | enum nl80211_iftype type; | |
575 | struct net_device *dev; | |
92ffe055 | 576 | u32 _flags, *flags = NULL; |
55682965 | 577 | |
2ec600d6 LCC |
578 | memset(¶ms, 0, sizeof(params)); |
579 | ||
bba95fef | 580 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
55682965 JB |
581 | if (err) |
582 | return err; | |
583 | ifindex = dev->ifindex; | |
723b038d | 584 | type = dev->ieee80211_ptr->iftype; |
55682965 JB |
585 | dev_put(dev); |
586 | ||
723b038d JB |
587 | err = -EINVAL; |
588 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
589 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
590 | if (type > NL80211_IFTYPE_MAX) | |
591 | goto unlock; | |
592 | } | |
593 | ||
f59ac048 LR |
594 | if (!drv->ops->change_virtual_intf || |
595 | !(drv->wiphy.interface_modes & (1 << type))) { | |
55682965 JB |
596 | err = -EOPNOTSUPP; |
597 | goto unlock; | |
598 | } | |
599 | ||
92ffe055 JB |
600 | if (info->attrs[NL80211_ATTR_MESH_ID]) { |
601 | if (type != NL80211_IFTYPE_MESH_POINT) { | |
602 | err = -EINVAL; | |
603 | goto unlock; | |
604 | } | |
2ec600d6 LCC |
605 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
606 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
607 | } | |
608 | ||
92ffe055 JB |
609 | if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { |
610 | if (type != NL80211_IFTYPE_MONITOR) { | |
611 | err = -EINVAL; | |
612 | goto unlock; | |
613 | } | |
614 | err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], | |
615 | &_flags); | |
616 | if (!err) | |
617 | flags = &_flags; | |
618 | } | |
55682965 | 619 | rtnl_lock(); |
66f7ac50 | 620 | err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, |
92ffe055 | 621 | type, flags, ¶ms); |
60719ffd JB |
622 | |
623 | dev = __dev_get_by_index(&init_net, ifindex); | |
624 | WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type)); | |
625 | ||
55682965 JB |
626 | rtnl_unlock(); |
627 | ||
628 | unlock: | |
629 | cfg80211_put_dev(drv); | |
630 | return err; | |
631 | } | |
632 | ||
633 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) | |
634 | { | |
635 | struct cfg80211_registered_device *drv; | |
2ec600d6 | 636 | struct vif_params params; |
55682965 JB |
637 | int err; |
638 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; | |
66f7ac50 | 639 | u32 flags; |
55682965 | 640 | |
2ec600d6 LCC |
641 | memset(¶ms, 0, sizeof(params)); |
642 | ||
55682965 JB |
643 | if (!info->attrs[NL80211_ATTR_IFNAME]) |
644 | return -EINVAL; | |
645 | ||
646 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
647 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
648 | if (type > NL80211_IFTYPE_MAX) | |
649 | return -EINVAL; | |
650 | } | |
651 | ||
652 | drv = cfg80211_get_dev_from_info(info); | |
653 | if (IS_ERR(drv)) | |
654 | return PTR_ERR(drv); | |
655 | ||
f59ac048 LR |
656 | if (!drv->ops->add_virtual_intf || |
657 | !(drv->wiphy.interface_modes & (1 << type))) { | |
55682965 JB |
658 | err = -EOPNOTSUPP; |
659 | goto unlock; | |
660 | } | |
661 | ||
2ec600d6 LCC |
662 | if (type == NL80211_IFTYPE_MESH_POINT && |
663 | info->attrs[NL80211_ATTR_MESH_ID]) { | |
664 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); | |
665 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
666 | } | |
667 | ||
55682965 | 668 | rtnl_lock(); |
66f7ac50 MW |
669 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
670 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, | |
671 | &flags); | |
55682965 | 672 | err = drv->ops->add_virtual_intf(&drv->wiphy, |
66f7ac50 | 673 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
2ec600d6 | 674 | type, err ? NULL : &flags, ¶ms); |
55682965 JB |
675 | rtnl_unlock(); |
676 | ||
2ec600d6 | 677 | |
55682965 JB |
678 | unlock: |
679 | cfg80211_put_dev(drv); | |
680 | return err; | |
681 | } | |
682 | ||
683 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) | |
684 | { | |
685 | struct cfg80211_registered_device *drv; | |
686 | int ifindex, err; | |
687 | struct net_device *dev; | |
688 | ||
bba95fef | 689 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
55682965 JB |
690 | if (err) |
691 | return err; | |
692 | ifindex = dev->ifindex; | |
693 | dev_put(dev); | |
694 | ||
695 | if (!drv->ops->del_virtual_intf) { | |
696 | err = -EOPNOTSUPP; | |
697 | goto out; | |
698 | } | |
699 | ||
700 | rtnl_lock(); | |
701 | err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); | |
702 | rtnl_unlock(); | |
703 | ||
704 | out: | |
705 | cfg80211_put_dev(drv); | |
706 | return err; | |
707 | } | |
708 | ||
41ade00f JB |
709 | struct get_key_cookie { |
710 | struct sk_buff *msg; | |
711 | int error; | |
712 | }; | |
713 | ||
714 | static void get_key_callback(void *c, struct key_params *params) | |
715 | { | |
716 | struct get_key_cookie *cookie = c; | |
717 | ||
718 | if (params->key) | |
719 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, | |
720 | params->key_len, params->key); | |
721 | ||
722 | if (params->seq) | |
723 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, | |
724 | params->seq_len, params->seq); | |
725 | ||
726 | if (params->cipher) | |
727 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, | |
728 | params->cipher); | |
729 | ||
730 | return; | |
731 | nla_put_failure: | |
732 | cookie->error = 1; | |
733 | } | |
734 | ||
735 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) | |
736 | { | |
737 | struct cfg80211_registered_device *drv; | |
738 | int err; | |
739 | struct net_device *dev; | |
740 | u8 key_idx = 0; | |
741 | u8 *mac_addr = NULL; | |
742 | struct get_key_cookie cookie = { | |
743 | .error = 0, | |
744 | }; | |
745 | void *hdr; | |
746 | struct sk_buff *msg; | |
747 | ||
748 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
749 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
750 | ||
3cfcf6ac | 751 | if (key_idx > 5) |
41ade00f JB |
752 | return -EINVAL; |
753 | ||
754 | if (info->attrs[NL80211_ATTR_MAC]) | |
755 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
756 | ||
bba95fef | 757 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
758 | if (err) |
759 | return err; | |
760 | ||
761 | if (!drv->ops->get_key) { | |
762 | err = -EOPNOTSUPP; | |
763 | goto out; | |
764 | } | |
765 | ||
766 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
767 | if (!msg) { | |
768 | err = -ENOMEM; | |
769 | goto out; | |
770 | } | |
771 | ||
772 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
773 | NL80211_CMD_NEW_KEY); | |
774 | ||
775 | if (IS_ERR(hdr)) { | |
776 | err = PTR_ERR(hdr); | |
777 | goto out; | |
778 | } | |
779 | ||
780 | cookie.msg = msg; | |
781 | ||
782 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
783 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
784 | if (mac_addr) | |
785 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
786 | ||
787 | rtnl_lock(); | |
788 | err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, | |
789 | &cookie, get_key_callback); | |
790 | rtnl_unlock(); | |
791 | ||
792 | if (err) | |
793 | goto out; | |
794 | ||
795 | if (cookie.error) | |
796 | goto nla_put_failure; | |
797 | ||
798 | genlmsg_end(msg, hdr); | |
799 | err = genlmsg_unicast(msg, info->snd_pid); | |
800 | goto out; | |
801 | ||
802 | nla_put_failure: | |
803 | err = -ENOBUFS; | |
804 | nlmsg_free(msg); | |
805 | out: | |
806 | cfg80211_put_dev(drv); | |
807 | dev_put(dev); | |
808 | return err; | |
809 | } | |
810 | ||
811 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) | |
812 | { | |
813 | struct cfg80211_registered_device *drv; | |
814 | int err; | |
815 | struct net_device *dev; | |
816 | u8 key_idx; | |
3cfcf6ac JM |
817 | int (*func)(struct wiphy *wiphy, struct net_device *netdev, |
818 | u8 key_index); | |
41ade00f JB |
819 | |
820 | if (!info->attrs[NL80211_ATTR_KEY_IDX]) | |
821 | return -EINVAL; | |
822 | ||
823 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
824 | ||
3cfcf6ac JM |
825 | if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) { |
826 | if (key_idx < 4 || key_idx > 5) | |
827 | return -EINVAL; | |
828 | } else if (key_idx > 3) | |
41ade00f JB |
829 | return -EINVAL; |
830 | ||
831 | /* currently only support setting default key */ | |
3cfcf6ac JM |
832 | if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] && |
833 | !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) | |
41ade00f JB |
834 | return -EINVAL; |
835 | ||
bba95fef | 836 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
837 | if (err) |
838 | return err; | |
839 | ||
3cfcf6ac JM |
840 | if (info->attrs[NL80211_ATTR_KEY_DEFAULT]) |
841 | func = drv->ops->set_default_key; | |
842 | else | |
843 | func = drv->ops->set_default_mgmt_key; | |
844 | ||
845 | if (!func) { | |
41ade00f JB |
846 | err = -EOPNOTSUPP; |
847 | goto out; | |
848 | } | |
849 | ||
850 | rtnl_lock(); | |
3cfcf6ac | 851 | err = func(&drv->wiphy, dev, key_idx); |
41ade00f JB |
852 | rtnl_unlock(); |
853 | ||
854 | out: | |
855 | cfg80211_put_dev(drv); | |
856 | dev_put(dev); | |
857 | return err; | |
858 | } | |
859 | ||
860 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) | |
861 | { | |
862 | struct cfg80211_registered_device *drv; | |
863 | int err; | |
864 | struct net_device *dev; | |
865 | struct key_params params; | |
866 | u8 key_idx = 0; | |
867 | u8 *mac_addr = NULL; | |
868 | ||
869 | memset(¶ms, 0, sizeof(params)); | |
870 | ||
871 | if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) | |
872 | return -EINVAL; | |
873 | ||
874 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { | |
875 | params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); | |
876 | params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); | |
877 | } | |
878 | ||
879 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
880 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
881 | ||
882 | params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); | |
883 | ||
884 | if (info->attrs[NL80211_ATTR_MAC]) | |
885 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
886 | ||
3cfcf6ac | 887 | if (key_idx > 5) |
41ade00f JB |
888 | return -EINVAL; |
889 | ||
890 | /* | |
891 | * Disallow pairwise keys with non-zero index unless it's WEP | |
892 | * (because current deployments use pairwise WEP keys with | |
893 | * non-zero indizes but 802.11i clearly specifies to use zero) | |
894 | */ | |
895 | if (mac_addr && key_idx && | |
896 | params.cipher != WLAN_CIPHER_SUITE_WEP40 && | |
897 | params.cipher != WLAN_CIPHER_SUITE_WEP104) | |
898 | return -EINVAL; | |
899 | ||
900 | /* TODO: add definitions for the lengths to linux/ieee80211.h */ | |
901 | switch (params.cipher) { | |
902 | case WLAN_CIPHER_SUITE_WEP40: | |
903 | if (params.key_len != 5) | |
904 | return -EINVAL; | |
905 | break; | |
906 | case WLAN_CIPHER_SUITE_TKIP: | |
907 | if (params.key_len != 32) | |
908 | return -EINVAL; | |
909 | break; | |
910 | case WLAN_CIPHER_SUITE_CCMP: | |
911 | if (params.key_len != 16) | |
912 | return -EINVAL; | |
913 | break; | |
914 | case WLAN_CIPHER_SUITE_WEP104: | |
915 | if (params.key_len != 13) | |
916 | return -EINVAL; | |
917 | break; | |
3cfcf6ac JM |
918 | case WLAN_CIPHER_SUITE_AES_CMAC: |
919 | if (params.key_len != 16) | |
920 | return -EINVAL; | |
921 | break; | |
41ade00f JB |
922 | default: |
923 | return -EINVAL; | |
924 | } | |
925 | ||
bba95fef | 926 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
927 | if (err) |
928 | return err; | |
929 | ||
930 | if (!drv->ops->add_key) { | |
931 | err = -EOPNOTSUPP; | |
932 | goto out; | |
933 | } | |
934 | ||
935 | rtnl_lock(); | |
936 | err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); | |
937 | rtnl_unlock(); | |
938 | ||
939 | out: | |
940 | cfg80211_put_dev(drv); | |
941 | dev_put(dev); | |
942 | return err; | |
943 | } | |
944 | ||
945 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) | |
946 | { | |
947 | struct cfg80211_registered_device *drv; | |
948 | int err; | |
949 | struct net_device *dev; | |
950 | u8 key_idx = 0; | |
951 | u8 *mac_addr = NULL; | |
952 | ||
953 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
954 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
955 | ||
3cfcf6ac | 956 | if (key_idx > 5) |
41ade00f JB |
957 | return -EINVAL; |
958 | ||
959 | if (info->attrs[NL80211_ATTR_MAC]) | |
960 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
961 | ||
bba95fef | 962 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
963 | if (err) |
964 | return err; | |
965 | ||
966 | if (!drv->ops->del_key) { | |
967 | err = -EOPNOTSUPP; | |
968 | goto out; | |
969 | } | |
970 | ||
971 | rtnl_lock(); | |
972 | err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); | |
973 | rtnl_unlock(); | |
974 | ||
975 | out: | |
976 | cfg80211_put_dev(drv); | |
977 | dev_put(dev); | |
978 | return err; | |
979 | } | |
980 | ||
ed1b6cc7 JB |
981 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
982 | { | |
983 | int (*call)(struct wiphy *wiphy, struct net_device *dev, | |
984 | struct beacon_parameters *info); | |
985 | struct cfg80211_registered_device *drv; | |
986 | int err; | |
987 | struct net_device *dev; | |
988 | struct beacon_parameters params; | |
989 | int haveinfo = 0; | |
990 | ||
bba95fef | 991 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
ed1b6cc7 JB |
992 | if (err) |
993 | return err; | |
994 | ||
995 | switch (info->genlhdr->cmd) { | |
996 | case NL80211_CMD_NEW_BEACON: | |
997 | /* these are required for NEW_BEACON */ | |
998 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || | |
999 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || | |
1000 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
1001 | err = -EINVAL; | |
1002 | goto out; | |
1003 | } | |
1004 | ||
1005 | call = drv->ops->add_beacon; | |
1006 | break; | |
1007 | case NL80211_CMD_SET_BEACON: | |
1008 | call = drv->ops->set_beacon; | |
1009 | break; | |
1010 | default: | |
1011 | WARN_ON(1); | |
1012 | err = -EOPNOTSUPP; | |
1013 | goto out; | |
1014 | } | |
1015 | ||
1016 | if (!call) { | |
1017 | err = -EOPNOTSUPP; | |
1018 | goto out; | |
1019 | } | |
1020 | ||
1021 | memset(¶ms, 0, sizeof(params)); | |
1022 | ||
1023 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
1024 | params.interval = | |
1025 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
1026 | haveinfo = 1; | |
1027 | } | |
1028 | ||
1029 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { | |
1030 | params.dtim_period = | |
1031 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); | |
1032 | haveinfo = 1; | |
1033 | } | |
1034 | ||
1035 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
1036 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
1037 | params.head_len = | |
1038 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
1039 | haveinfo = 1; | |
1040 | } | |
1041 | ||
1042 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { | |
1043 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
1044 | params.tail_len = | |
1045 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
1046 | haveinfo = 1; | |
1047 | } | |
1048 | ||
1049 | if (!haveinfo) { | |
1050 | err = -EINVAL; | |
1051 | goto out; | |
1052 | } | |
1053 | ||
1054 | rtnl_lock(); | |
1055 | err = call(&drv->wiphy, dev, ¶ms); | |
1056 | rtnl_unlock(); | |
1057 | ||
1058 | out: | |
1059 | cfg80211_put_dev(drv); | |
1060 | dev_put(dev); | |
1061 | return err; | |
1062 | } | |
1063 | ||
1064 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) | |
1065 | { | |
1066 | struct cfg80211_registered_device *drv; | |
1067 | int err; | |
1068 | struct net_device *dev; | |
1069 | ||
bba95fef | 1070 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
ed1b6cc7 JB |
1071 | if (err) |
1072 | return err; | |
1073 | ||
1074 | if (!drv->ops->del_beacon) { | |
1075 | err = -EOPNOTSUPP; | |
1076 | goto out; | |
1077 | } | |
1078 | ||
1079 | rtnl_lock(); | |
1080 | err = drv->ops->del_beacon(&drv->wiphy, dev); | |
1081 | rtnl_unlock(); | |
1082 | ||
1083 | out: | |
1084 | cfg80211_put_dev(drv); | |
1085 | dev_put(dev); | |
1086 | return err; | |
1087 | } | |
1088 | ||
5727ef1b JB |
1089 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
1090 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, | |
1091 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, | |
1092 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, | |
1093 | }; | |
1094 | ||
1095 | static int parse_station_flags(struct nlattr *nla, u32 *staflags) | |
1096 | { | |
1097 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; | |
1098 | int flag; | |
1099 | ||
1100 | *staflags = 0; | |
1101 | ||
1102 | if (!nla) | |
1103 | return 0; | |
1104 | ||
1105 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, | |
1106 | nla, sta_flags_policy)) | |
1107 | return -EINVAL; | |
1108 | ||
1109 | *staflags = STATION_FLAG_CHANGED; | |
1110 | ||
1111 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) | |
1112 | if (flags[flag]) | |
1113 | *staflags |= (1<<flag); | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | ||
420e7fab HR |
1118 | static u16 nl80211_calculate_bitrate(struct rate_info *rate) |
1119 | { | |
1120 | int modulation, streams, bitrate; | |
1121 | ||
1122 | if (!(rate->flags & RATE_INFO_FLAGS_MCS)) | |
1123 | return rate->legacy; | |
1124 | ||
1125 | /* the formula below does only work for MCS values smaller than 32 */ | |
1126 | if (rate->mcs >= 32) | |
1127 | return 0; | |
1128 | ||
1129 | modulation = rate->mcs & 7; | |
1130 | streams = (rate->mcs >> 3) + 1; | |
1131 | ||
1132 | bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ? | |
1133 | 13500000 : 6500000; | |
1134 | ||
1135 | if (modulation < 4) | |
1136 | bitrate *= (modulation + 1); | |
1137 | else if (modulation == 4) | |
1138 | bitrate *= (modulation + 2); | |
1139 | else | |
1140 | bitrate *= (modulation + 3); | |
1141 | ||
1142 | bitrate *= streams; | |
1143 | ||
1144 | if (rate->flags & RATE_INFO_FLAGS_SHORT_GI) | |
1145 | bitrate = (bitrate / 9) * 10; | |
1146 | ||
1147 | /* do NOT round down here */ | |
1148 | return (bitrate + 50000) / 100000; | |
1149 | } | |
1150 | ||
fd5b74dc JB |
1151 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
1152 | int flags, struct net_device *dev, | |
2ec600d6 | 1153 | u8 *mac_addr, struct station_info *sinfo) |
fd5b74dc JB |
1154 | { |
1155 | void *hdr; | |
420e7fab HR |
1156 | struct nlattr *sinfoattr, *txrate; |
1157 | u16 bitrate; | |
fd5b74dc JB |
1158 | |
1159 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1160 | if (!hdr) | |
1161 | return -1; | |
1162 | ||
1163 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1164 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
1165 | ||
2ec600d6 LCC |
1166 | sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); |
1167 | if (!sinfoattr) | |
fd5b74dc | 1168 | goto nla_put_failure; |
2ec600d6 LCC |
1169 | if (sinfo->filled & STATION_INFO_INACTIVE_TIME) |
1170 | NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, | |
1171 | sinfo->inactive_time); | |
1172 | if (sinfo->filled & STATION_INFO_RX_BYTES) | |
1173 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, | |
1174 | sinfo->rx_bytes); | |
1175 | if (sinfo->filled & STATION_INFO_TX_BYTES) | |
1176 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, | |
1177 | sinfo->tx_bytes); | |
1178 | if (sinfo->filled & STATION_INFO_LLID) | |
1179 | NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, | |
1180 | sinfo->llid); | |
1181 | if (sinfo->filled & STATION_INFO_PLID) | |
1182 | NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, | |
1183 | sinfo->plid); | |
1184 | if (sinfo->filled & STATION_INFO_PLINK_STATE) | |
1185 | NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, | |
1186 | sinfo->plink_state); | |
420e7fab HR |
1187 | if (sinfo->filled & STATION_INFO_SIGNAL) |
1188 | NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL, | |
1189 | sinfo->signal); | |
1190 | if (sinfo->filled & STATION_INFO_TX_BITRATE) { | |
1191 | txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE); | |
1192 | if (!txrate) | |
1193 | goto nla_put_failure; | |
1194 | ||
1195 | /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */ | |
1196 | bitrate = nl80211_calculate_bitrate(&sinfo->txrate); | |
1197 | if (bitrate > 0) | |
1198 | NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); | |
2ec600d6 | 1199 | |
420e7fab HR |
1200 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS) |
1201 | NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, | |
1202 | sinfo->txrate.mcs); | |
1203 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) | |
1204 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); | |
1205 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI) | |
1206 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); | |
1207 | ||
1208 | nla_nest_end(msg, txrate); | |
1209 | } | |
98c8a60a JM |
1210 | if (sinfo->filled & STATION_INFO_RX_PACKETS) |
1211 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, | |
1212 | sinfo->rx_packets); | |
1213 | if (sinfo->filled & STATION_INFO_TX_PACKETS) | |
1214 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, | |
1215 | sinfo->tx_packets); | |
2ec600d6 | 1216 | nla_nest_end(msg, sinfoattr); |
fd5b74dc JB |
1217 | |
1218 | return genlmsg_end(msg, hdr); | |
1219 | ||
1220 | nla_put_failure: | |
bc3ed28c TG |
1221 | genlmsg_cancel(msg, hdr); |
1222 | return -EMSGSIZE; | |
fd5b74dc JB |
1223 | } |
1224 | ||
2ec600d6 | 1225 | static int nl80211_dump_station(struct sk_buff *skb, |
bba95fef | 1226 | struct netlink_callback *cb) |
2ec600d6 | 1227 | { |
2ec600d6 LCC |
1228 | struct station_info sinfo; |
1229 | struct cfg80211_registered_device *dev; | |
bba95fef | 1230 | struct net_device *netdev; |
2ec600d6 | 1231 | u8 mac_addr[ETH_ALEN]; |
bba95fef JB |
1232 | int ifidx = cb->args[0]; |
1233 | int sta_idx = cb->args[1]; | |
2ec600d6 | 1234 | int err; |
2ec600d6 | 1235 | |
bba95fef JB |
1236 | if (!ifidx) { |
1237 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1238 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1239 | nl80211_policy); | |
1240 | if (err) | |
1241 | return err; | |
2ec600d6 | 1242 | |
bba95fef JB |
1243 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
1244 | return -EINVAL; | |
2ec600d6 | 1245 | |
bba95fef JB |
1246 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
1247 | if (!ifidx) | |
1248 | return -EINVAL; | |
2ec600d6 | 1249 | } |
2ec600d6 | 1250 | |
bba95fef JB |
1251 | netdev = dev_get_by_index(&init_net, ifidx); |
1252 | if (!netdev) | |
1253 | return -ENODEV; | |
2ec600d6 | 1254 | |
bba95fef JB |
1255 | dev = cfg80211_get_dev_from_ifindex(ifidx); |
1256 | if (IS_ERR(dev)) { | |
1257 | err = PTR_ERR(dev); | |
1258 | goto out_put_netdev; | |
1259 | } | |
1260 | ||
1261 | if (!dev->ops->dump_station) { | |
1262 | err = -ENOSYS; | |
1263 | goto out_err; | |
1264 | } | |
1265 | ||
1266 | rtnl_lock(); | |
1267 | ||
1268 | while (1) { | |
1269 | err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, | |
1270 | mac_addr, &sinfo); | |
1271 | if (err == -ENOENT) | |
1272 | break; | |
1273 | if (err) | |
1274 | goto out_err_rtnl; | |
1275 | ||
1276 | if (nl80211_send_station(skb, | |
1277 | NETLINK_CB(cb->skb).pid, | |
1278 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1279 | netdev, mac_addr, | |
1280 | &sinfo) < 0) | |
1281 | goto out; | |
1282 | ||
1283 | sta_idx++; | |
1284 | } | |
1285 | ||
1286 | ||
1287 | out: | |
1288 | cb->args[1] = sta_idx; | |
1289 | err = skb->len; | |
1290 | out_err_rtnl: | |
1291 | rtnl_unlock(); | |
1292 | out_err: | |
1293 | cfg80211_put_dev(dev); | |
1294 | out_put_netdev: | |
1295 | dev_put(netdev); | |
1296 | ||
1297 | return err; | |
2ec600d6 | 1298 | } |
fd5b74dc | 1299 | |
5727ef1b JB |
1300 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
1301 | { | |
fd5b74dc JB |
1302 | struct cfg80211_registered_device *drv; |
1303 | int err; | |
1304 | struct net_device *dev; | |
2ec600d6 | 1305 | struct station_info sinfo; |
fd5b74dc JB |
1306 | struct sk_buff *msg; |
1307 | u8 *mac_addr = NULL; | |
1308 | ||
2ec600d6 | 1309 | memset(&sinfo, 0, sizeof(sinfo)); |
fd5b74dc JB |
1310 | |
1311 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1312 | return -EINVAL; | |
1313 | ||
1314 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1315 | ||
bba95fef | 1316 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
fd5b74dc JB |
1317 | if (err) |
1318 | return err; | |
1319 | ||
1320 | if (!drv->ops->get_station) { | |
1321 | err = -EOPNOTSUPP; | |
1322 | goto out; | |
1323 | } | |
1324 | ||
1325 | rtnl_lock(); | |
2ec600d6 | 1326 | err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo); |
fd5b74dc JB |
1327 | rtnl_unlock(); |
1328 | ||
2ec600d6 LCC |
1329 | if (err) |
1330 | goto out; | |
1331 | ||
fd5b74dc JB |
1332 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
1333 | if (!msg) | |
1334 | goto out; | |
1335 | ||
1336 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, | |
2ec600d6 | 1337 | dev, mac_addr, &sinfo) < 0) |
fd5b74dc JB |
1338 | goto out_free; |
1339 | ||
1340 | err = genlmsg_unicast(msg, info->snd_pid); | |
1341 | goto out; | |
1342 | ||
1343 | out_free: | |
1344 | nlmsg_free(msg); | |
1345 | ||
1346 | out: | |
1347 | cfg80211_put_dev(drv); | |
1348 | dev_put(dev); | |
1349 | return err; | |
5727ef1b JB |
1350 | } |
1351 | ||
1352 | /* | |
1353 | * Get vlan interface making sure it is on the right wiphy. | |
1354 | */ | |
1355 | static int get_vlan(struct nlattr *vlanattr, | |
1356 | struct cfg80211_registered_device *rdev, | |
1357 | struct net_device **vlan) | |
1358 | { | |
1359 | *vlan = NULL; | |
1360 | ||
1361 | if (vlanattr) { | |
1362 | *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); | |
1363 | if (!*vlan) | |
1364 | return -ENODEV; | |
1365 | if (!(*vlan)->ieee80211_ptr) | |
1366 | return -EINVAL; | |
1367 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) | |
1368 | return -EINVAL; | |
1369 | } | |
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) | |
1374 | { | |
1375 | struct cfg80211_registered_device *drv; | |
1376 | int err; | |
1377 | struct net_device *dev; | |
1378 | struct station_parameters params; | |
1379 | u8 *mac_addr = NULL; | |
1380 | ||
1381 | memset(¶ms, 0, sizeof(params)); | |
1382 | ||
1383 | params.listen_interval = -1; | |
1384 | ||
1385 | if (info->attrs[NL80211_ATTR_STA_AID]) | |
1386 | return -EINVAL; | |
1387 | ||
1388 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1389 | return -EINVAL; | |
1390 | ||
1391 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1392 | ||
1393 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { | |
1394 | params.supported_rates = | |
1395 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1396 | params.supported_rates_len = | |
1397 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1398 | } | |
1399 | ||
1400 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1401 | params.listen_interval = | |
1402 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
1403 | ||
36aedc90 JM |
1404 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
1405 | params.ht_capa = | |
1406 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
1407 | ||
5727ef1b JB |
1408 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], |
1409 | ¶ms.station_flags)) | |
1410 | return -EINVAL; | |
1411 | ||
2ec600d6 LCC |
1412 | if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) |
1413 | params.plink_action = | |
1414 | nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); | |
1415 | ||
bba95fef | 1416 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1417 | if (err) |
1418 | return err; | |
1419 | ||
1420 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1421 | if (err) | |
1422 | goto out; | |
1423 | ||
1424 | if (!drv->ops->change_station) { | |
1425 | err = -EOPNOTSUPP; | |
1426 | goto out; | |
1427 | } | |
1428 | ||
1429 | rtnl_lock(); | |
1430 | err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1431 | rtnl_unlock(); | |
1432 | ||
1433 | out: | |
1434 | if (params.vlan) | |
1435 | dev_put(params.vlan); | |
1436 | cfg80211_put_dev(drv); | |
1437 | dev_put(dev); | |
1438 | return err; | |
1439 | } | |
1440 | ||
1441 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) | |
1442 | { | |
1443 | struct cfg80211_registered_device *drv; | |
1444 | int err; | |
1445 | struct net_device *dev; | |
1446 | struct station_parameters params; | |
1447 | u8 *mac_addr = NULL; | |
1448 | ||
1449 | memset(¶ms, 0, sizeof(params)); | |
1450 | ||
1451 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1452 | return -EINVAL; | |
1453 | ||
1454 | if (!info->attrs[NL80211_ATTR_STA_AID]) | |
1455 | return -EINVAL; | |
1456 | ||
1457 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1458 | return -EINVAL; | |
1459 | ||
1460 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) | |
1461 | return -EINVAL; | |
1462 | ||
1463 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1464 | params.supported_rates = | |
1465 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1466 | params.supported_rates_len = | |
1467 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1468 | params.listen_interval = | |
1469 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
16f2e85d | 1470 | params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); |
36aedc90 JM |
1471 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
1472 | params.ht_capa = | |
1473 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
5727ef1b JB |
1474 | |
1475 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
1476 | ¶ms.station_flags)) | |
1477 | return -EINVAL; | |
1478 | ||
bba95fef | 1479 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1480 | if (err) |
1481 | return err; | |
1482 | ||
1483 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1484 | if (err) | |
1485 | goto out; | |
1486 | ||
1487 | if (!drv->ops->add_station) { | |
1488 | err = -EOPNOTSUPP; | |
1489 | goto out; | |
1490 | } | |
1491 | ||
1492 | rtnl_lock(); | |
1493 | err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1494 | rtnl_unlock(); | |
1495 | ||
1496 | out: | |
1497 | if (params.vlan) | |
1498 | dev_put(params.vlan); | |
1499 | cfg80211_put_dev(drv); | |
1500 | dev_put(dev); | |
1501 | return err; | |
1502 | } | |
1503 | ||
1504 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) | |
1505 | { | |
1506 | struct cfg80211_registered_device *drv; | |
1507 | int err; | |
1508 | struct net_device *dev; | |
1509 | u8 *mac_addr = NULL; | |
1510 | ||
1511 | if (info->attrs[NL80211_ATTR_MAC]) | |
1512 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1513 | ||
bba95fef | 1514 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1515 | if (err) |
1516 | return err; | |
1517 | ||
1518 | if (!drv->ops->del_station) { | |
1519 | err = -EOPNOTSUPP; | |
1520 | goto out; | |
1521 | } | |
1522 | ||
1523 | rtnl_lock(); | |
1524 | err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); | |
1525 | rtnl_unlock(); | |
1526 | ||
1527 | out: | |
1528 | cfg80211_put_dev(drv); | |
1529 | dev_put(dev); | |
1530 | return err; | |
1531 | } | |
1532 | ||
2ec600d6 LCC |
1533 | static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, |
1534 | int flags, struct net_device *dev, | |
1535 | u8 *dst, u8 *next_hop, | |
1536 | struct mpath_info *pinfo) | |
1537 | { | |
1538 | void *hdr; | |
1539 | struct nlattr *pinfoattr; | |
1540 | ||
1541 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1542 | if (!hdr) | |
1543 | return -1; | |
1544 | ||
1545 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1546 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); | |
1547 | NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); | |
1548 | ||
1549 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); | |
1550 | if (!pinfoattr) | |
1551 | goto nla_put_failure; | |
1552 | if (pinfo->filled & MPATH_INFO_FRAME_QLEN) | |
1553 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, | |
1554 | pinfo->frame_qlen); | |
1555 | if (pinfo->filled & MPATH_INFO_DSN) | |
1556 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN, | |
1557 | pinfo->dsn); | |
1558 | if (pinfo->filled & MPATH_INFO_METRIC) | |
1559 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, | |
1560 | pinfo->metric); | |
1561 | if (pinfo->filled & MPATH_INFO_EXPTIME) | |
1562 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, | |
1563 | pinfo->exptime); | |
1564 | if (pinfo->filled & MPATH_INFO_FLAGS) | |
1565 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, | |
1566 | pinfo->flags); | |
1567 | if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) | |
1568 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, | |
1569 | pinfo->discovery_timeout); | |
1570 | if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) | |
1571 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, | |
1572 | pinfo->discovery_retries); | |
1573 | ||
1574 | nla_nest_end(msg, pinfoattr); | |
1575 | ||
1576 | return genlmsg_end(msg, hdr); | |
1577 | ||
1578 | nla_put_failure: | |
bc3ed28c TG |
1579 | genlmsg_cancel(msg, hdr); |
1580 | return -EMSGSIZE; | |
2ec600d6 LCC |
1581 | } |
1582 | ||
1583 | static int nl80211_dump_mpath(struct sk_buff *skb, | |
bba95fef | 1584 | struct netlink_callback *cb) |
2ec600d6 | 1585 | { |
2ec600d6 LCC |
1586 | struct mpath_info pinfo; |
1587 | struct cfg80211_registered_device *dev; | |
bba95fef | 1588 | struct net_device *netdev; |
2ec600d6 LCC |
1589 | u8 dst[ETH_ALEN]; |
1590 | u8 next_hop[ETH_ALEN]; | |
bba95fef JB |
1591 | int ifidx = cb->args[0]; |
1592 | int path_idx = cb->args[1]; | |
2ec600d6 | 1593 | int err; |
2ec600d6 | 1594 | |
bba95fef JB |
1595 | if (!ifidx) { |
1596 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1597 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1598 | nl80211_policy); | |
1599 | if (err) | |
1600 | return err; | |
1601 | ||
1602 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
1603 | return -EINVAL; | |
1604 | ||
1605 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
1606 | if (!ifidx) | |
1607 | return -EINVAL; | |
1608 | } | |
1609 | ||
1610 | netdev = dev_get_by_index(&init_net, ifidx); | |
1611 | if (!netdev) | |
1612 | return -ENODEV; | |
1613 | ||
1614 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
1615 | if (IS_ERR(dev)) { | |
1616 | err = PTR_ERR(dev); | |
1617 | goto out_put_netdev; | |
1618 | } | |
1619 | ||
1620 | if (!dev->ops->dump_mpath) { | |
1621 | err = -ENOSYS; | |
1622 | goto out_err; | |
1623 | } | |
1624 | ||
1625 | rtnl_lock(); | |
1626 | ||
1627 | while (1) { | |
1628 | err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, | |
1629 | dst, next_hop, &pinfo); | |
1630 | if (err == -ENOENT) | |
2ec600d6 | 1631 | break; |
bba95fef JB |
1632 | if (err) |
1633 | goto out_err_rtnl; | |
2ec600d6 | 1634 | |
bba95fef JB |
1635 | if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, |
1636 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1637 | netdev, dst, next_hop, | |
1638 | &pinfo) < 0) | |
1639 | goto out; | |
2ec600d6 | 1640 | |
bba95fef | 1641 | path_idx++; |
2ec600d6 | 1642 | } |
2ec600d6 | 1643 | |
2ec600d6 | 1644 | |
bba95fef JB |
1645 | out: |
1646 | cb->args[1] = path_idx; | |
1647 | err = skb->len; | |
1648 | out_err_rtnl: | |
1649 | rtnl_unlock(); | |
1650 | out_err: | |
1651 | cfg80211_put_dev(dev); | |
1652 | out_put_netdev: | |
1653 | dev_put(netdev); | |
1654 | ||
1655 | return err; | |
2ec600d6 LCC |
1656 | } |
1657 | ||
1658 | static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) | |
1659 | { | |
1660 | struct cfg80211_registered_device *drv; | |
1661 | int err; | |
1662 | struct net_device *dev; | |
1663 | struct mpath_info pinfo; | |
1664 | struct sk_buff *msg; | |
1665 | u8 *dst = NULL; | |
1666 | u8 next_hop[ETH_ALEN]; | |
1667 | ||
1668 | memset(&pinfo, 0, sizeof(pinfo)); | |
1669 | ||
1670 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1671 | return -EINVAL; | |
1672 | ||
1673 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1674 | ||
bba95fef | 1675 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1676 | if (err) |
1677 | return err; | |
1678 | ||
1679 | if (!drv->ops->get_mpath) { | |
1680 | err = -EOPNOTSUPP; | |
1681 | goto out; | |
1682 | } | |
1683 | ||
1684 | rtnl_lock(); | |
1685 | err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo); | |
1686 | rtnl_unlock(); | |
1687 | ||
1688 | if (err) | |
1689 | goto out; | |
1690 | ||
1691 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1692 | if (!msg) | |
1693 | goto out; | |
1694 | ||
1695 | if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, | |
1696 | dev, dst, next_hop, &pinfo) < 0) | |
1697 | goto out_free; | |
1698 | ||
1699 | err = genlmsg_unicast(msg, info->snd_pid); | |
1700 | goto out; | |
1701 | ||
1702 | out_free: | |
1703 | nlmsg_free(msg); | |
1704 | ||
1705 | out: | |
1706 | cfg80211_put_dev(drv); | |
1707 | dev_put(dev); | |
1708 | return err; | |
1709 | } | |
1710 | ||
1711 | static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) | |
1712 | { | |
1713 | struct cfg80211_registered_device *drv; | |
1714 | int err; | |
1715 | struct net_device *dev; | |
1716 | u8 *dst = NULL; | |
1717 | u8 *next_hop = NULL; | |
1718 | ||
1719 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1720 | return -EINVAL; | |
1721 | ||
1722 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1723 | return -EINVAL; | |
1724 | ||
1725 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1726 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1727 | ||
bba95fef | 1728 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1729 | if (err) |
1730 | return err; | |
1731 | ||
1732 | if (!drv->ops->change_mpath) { | |
1733 | err = -EOPNOTSUPP; | |
1734 | goto out; | |
1735 | } | |
1736 | ||
1737 | rtnl_lock(); | |
1738 | err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop); | |
1739 | rtnl_unlock(); | |
1740 | ||
1741 | out: | |
1742 | cfg80211_put_dev(drv); | |
1743 | dev_put(dev); | |
1744 | return err; | |
1745 | } | |
1746 | static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) | |
1747 | { | |
1748 | struct cfg80211_registered_device *drv; | |
1749 | int err; | |
1750 | struct net_device *dev; | |
1751 | u8 *dst = NULL; | |
1752 | u8 *next_hop = NULL; | |
1753 | ||
1754 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1755 | return -EINVAL; | |
1756 | ||
1757 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1758 | return -EINVAL; | |
1759 | ||
1760 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1761 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1762 | ||
bba95fef | 1763 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1764 | if (err) |
1765 | return err; | |
1766 | ||
1767 | if (!drv->ops->add_mpath) { | |
1768 | err = -EOPNOTSUPP; | |
1769 | goto out; | |
1770 | } | |
1771 | ||
1772 | rtnl_lock(); | |
1773 | err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop); | |
1774 | rtnl_unlock(); | |
1775 | ||
1776 | out: | |
1777 | cfg80211_put_dev(drv); | |
1778 | dev_put(dev); | |
1779 | return err; | |
1780 | } | |
1781 | ||
1782 | static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) | |
1783 | { | |
1784 | struct cfg80211_registered_device *drv; | |
1785 | int err; | |
1786 | struct net_device *dev; | |
1787 | u8 *dst = NULL; | |
1788 | ||
1789 | if (info->attrs[NL80211_ATTR_MAC]) | |
1790 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1791 | ||
bba95fef | 1792 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1793 | if (err) |
1794 | return err; | |
1795 | ||
1796 | if (!drv->ops->del_mpath) { | |
1797 | err = -EOPNOTSUPP; | |
1798 | goto out; | |
1799 | } | |
1800 | ||
1801 | rtnl_lock(); | |
1802 | err = drv->ops->del_mpath(&drv->wiphy, dev, dst); | |
1803 | rtnl_unlock(); | |
1804 | ||
1805 | out: | |
1806 | cfg80211_put_dev(drv); | |
1807 | dev_put(dev); | |
1808 | return err; | |
1809 | } | |
1810 | ||
9f1ba906 JM |
1811 | static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) |
1812 | { | |
1813 | struct cfg80211_registered_device *drv; | |
1814 | int err; | |
1815 | struct net_device *dev; | |
1816 | struct bss_parameters params; | |
1817 | ||
1818 | memset(¶ms, 0, sizeof(params)); | |
1819 | /* default to not changing parameters */ | |
1820 | params.use_cts_prot = -1; | |
1821 | params.use_short_preamble = -1; | |
1822 | params.use_short_slot_time = -1; | |
1823 | ||
1824 | if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) | |
1825 | params.use_cts_prot = | |
1826 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); | |
1827 | if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) | |
1828 | params.use_short_preamble = | |
1829 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); | |
1830 | if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) | |
1831 | params.use_short_slot_time = | |
1832 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); | |
90c97a04 JM |
1833 | if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { |
1834 | params.basic_rates = | |
1835 | nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
1836 | params.basic_rates_len = | |
1837 | nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
1838 | } | |
9f1ba906 JM |
1839 | |
1840 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1841 | if (err) | |
1842 | return err; | |
1843 | ||
1844 | if (!drv->ops->change_bss) { | |
1845 | err = -EOPNOTSUPP; | |
1846 | goto out; | |
1847 | } | |
1848 | ||
1849 | rtnl_lock(); | |
1850 | err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); | |
1851 | rtnl_unlock(); | |
1852 | ||
1853 | out: | |
1854 | cfg80211_put_dev(drv); | |
1855 | dev_put(dev); | |
1856 | return err; | |
1857 | } | |
1858 | ||
b2e1b302 LR |
1859 | static const struct nla_policy |
1860 | reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { | |
1861 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
1862 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
1863 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
1864 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
1865 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
1866 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
1867 | }; | |
1868 | ||
1869 | static int parse_reg_rule(struct nlattr *tb[], | |
1870 | struct ieee80211_reg_rule *reg_rule) | |
1871 | { | |
1872 | struct ieee80211_freq_range *freq_range = ®_rule->freq_range; | |
1873 | struct ieee80211_power_rule *power_rule = ®_rule->power_rule; | |
1874 | ||
1875 | if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) | |
1876 | return -EINVAL; | |
1877 | if (!tb[NL80211_ATTR_FREQ_RANGE_START]) | |
1878 | return -EINVAL; | |
1879 | if (!tb[NL80211_ATTR_FREQ_RANGE_END]) | |
1880 | return -EINVAL; | |
1881 | if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) | |
1882 | return -EINVAL; | |
1883 | if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
1884 | return -EINVAL; | |
1885 | ||
1886 | reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); | |
1887 | ||
1888 | freq_range->start_freq_khz = | |
1889 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); | |
1890 | freq_range->end_freq_khz = | |
1891 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); | |
1892 | freq_range->max_bandwidth_khz = | |
1893 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); | |
1894 | ||
1895 | power_rule->max_eirp = | |
1896 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); | |
1897 | ||
1898 | if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) | |
1899 | power_rule->max_antenna_gain = | |
1900 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); | |
1901 | ||
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) | |
1906 | { | |
1907 | int r; | |
1908 | char *data = NULL; | |
1909 | ||
80778f18 LR |
1910 | /* |
1911 | * You should only get this when cfg80211 hasn't yet initialized | |
1912 | * completely when built-in to the kernel right between the time | |
1913 | * window between nl80211_init() and regulatory_init(), if that is | |
1914 | * even possible. | |
1915 | */ | |
1916 | mutex_lock(&cfg80211_mutex); | |
1917 | if (unlikely(!cfg80211_regdomain)) { | |
1918 | r = -EINPROGRESS; | |
1919 | goto out; | |
1920 | } | |
1921 | ||
1922 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) { | |
1923 | r = -EINVAL; | |
1924 | goto out; | |
1925 | } | |
b2e1b302 LR |
1926 | |
1927 | data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
1928 | ||
1929 | #ifdef CONFIG_WIRELESS_OLD_REGULATORY | |
1930 | /* We ignore world regdom requests with the old regdom setup */ | |
80778f18 LR |
1931 | if (is_world_regdom(data)) { |
1932 | r = -EINVAL; | |
1933 | goto out; | |
1934 | } | |
b2e1b302 | 1935 | #endif |
3f2355cb | 1936 | r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY); |
80778f18 LR |
1937 | /* |
1938 | * This means the regulatory domain was already set, however | |
d81c2d9c | 1939 | * we don't want to confuse userspace with a "successful error" |
80778f18 LR |
1940 | * message so lets just treat it as a success |
1941 | */ | |
d81c2d9c LR |
1942 | if (r == -EALREADY) |
1943 | r = 0; | |
80778f18 LR |
1944 | out: |
1945 | mutex_unlock(&cfg80211_mutex); | |
b2e1b302 LR |
1946 | return r; |
1947 | } | |
1948 | ||
93da9cc1 | 1949 | static int nl80211_get_mesh_params(struct sk_buff *skb, |
1950 | struct genl_info *info) | |
1951 | { | |
1952 | struct cfg80211_registered_device *drv; | |
1953 | struct mesh_config cur_params; | |
1954 | int err; | |
1955 | struct net_device *dev; | |
1956 | void *hdr; | |
1957 | struct nlattr *pinfoattr; | |
1958 | struct sk_buff *msg; | |
1959 | ||
1960 | /* Look up our device */ | |
1961 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1962 | if (err) | |
1963 | return err; | |
1964 | ||
1965 | /* Get the mesh params */ | |
1966 | rtnl_lock(); | |
1967 | err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params); | |
1968 | rtnl_unlock(); | |
1969 | if (err) | |
1970 | goto out; | |
1971 | ||
1972 | /* Draw up a netlink message to send back */ | |
1973 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1974 | if (!msg) { | |
1975 | err = -ENOBUFS; | |
1976 | goto out; | |
1977 | } | |
1978 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
1979 | NL80211_CMD_GET_MESH_PARAMS); | |
1980 | if (!hdr) | |
1981 | goto nla_put_failure; | |
1982 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS); | |
1983 | if (!pinfoattr) | |
1984 | goto nla_put_failure; | |
1985 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1986 | NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, | |
1987 | cur_params.dot11MeshRetryTimeout); | |
1988 | NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, | |
1989 | cur_params.dot11MeshConfirmTimeout); | |
1990 | NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, | |
1991 | cur_params.dot11MeshHoldingTimeout); | |
1992 | NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, | |
1993 | cur_params.dot11MeshMaxPeerLinks); | |
1994 | NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES, | |
1995 | cur_params.dot11MeshMaxRetries); | |
1996 | NLA_PUT_U8(msg, NL80211_MESHCONF_TTL, | |
1997 | cur_params.dot11MeshTTL); | |
1998 | NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, | |
1999 | cur_params.auto_open_plinks); | |
2000 | NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, | |
2001 | cur_params.dot11MeshHWMPmaxPREQretries); | |
2002 | NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, | |
2003 | cur_params.path_refresh_time); | |
2004 | NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, | |
2005 | cur_params.min_discovery_timeout); | |
2006 | NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, | |
2007 | cur_params.dot11MeshHWMPactivePathTimeout); | |
2008 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, | |
2009 | cur_params.dot11MeshHWMPpreqMinInterval); | |
2010 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, | |
2011 | cur_params.dot11MeshHWMPnetDiameterTraversalTime); | |
2012 | nla_nest_end(msg, pinfoattr); | |
2013 | genlmsg_end(msg, hdr); | |
2014 | err = genlmsg_unicast(msg, info->snd_pid); | |
2015 | goto out; | |
2016 | ||
2017 | nla_put_failure: | |
2018 | genlmsg_cancel(msg, hdr); | |
2019 | err = -EMSGSIZE; | |
2020 | out: | |
2021 | /* Cleanup */ | |
2022 | cfg80211_put_dev(drv); | |
2023 | dev_put(dev); | |
2024 | return err; | |
2025 | } | |
2026 | ||
2027 | #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ | |
2028 | do {\ | |
2029 | if (table[attr_num]) {\ | |
2030 | cfg.param = nla_fn(table[attr_num]); \ | |
2031 | mask |= (1 << (attr_num - 1)); \ | |
2032 | } \ | |
2033 | } while (0);\ | |
2034 | ||
2035 | static struct nla_policy | |
2036 | nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = { | |
2037 | [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, | |
2038 | [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, | |
2039 | [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, | |
2040 | [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, | |
2041 | [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, | |
2042 | [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, | |
2043 | [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, | |
2044 | ||
2045 | [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, | |
2046 | [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, | |
2047 | [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, | |
2048 | [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, | |
2049 | [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, | |
2050 | [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, | |
2051 | }; | |
2052 | ||
2053 | static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) | |
2054 | { | |
2055 | int err; | |
2056 | u32 mask; | |
2057 | struct cfg80211_registered_device *drv; | |
2058 | struct net_device *dev; | |
2059 | struct mesh_config cfg; | |
2060 | struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; | |
2061 | struct nlattr *parent_attr; | |
2062 | ||
2063 | parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS]; | |
2064 | if (!parent_attr) | |
2065 | return -EINVAL; | |
2066 | if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, | |
2067 | parent_attr, nl80211_meshconf_params_policy)) | |
2068 | return -EINVAL; | |
2069 | ||
2070 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
2071 | if (err) | |
2072 | return err; | |
2073 | ||
2074 | /* This makes sure that there aren't more than 32 mesh config | |
2075 | * parameters (otherwise our bitfield scheme would not work.) */ | |
2076 | BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); | |
2077 | ||
2078 | /* Fill in the params struct */ | |
2079 | mask = 0; | |
2080 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, | |
2081 | mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); | |
2082 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, | |
2083 | mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16); | |
2084 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, | |
2085 | mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16); | |
2086 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, | |
2087 | mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16); | |
2088 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, | |
2089 | mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); | |
2090 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, | |
2091 | mask, NL80211_MESHCONF_TTL, nla_get_u8); | |
2092 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, | |
2093 | mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8); | |
2094 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, | |
2095 | mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, | |
2096 | nla_get_u8); | |
2097 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, | |
2098 | mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32); | |
2099 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, | |
2100 | mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, | |
2101 | nla_get_u16); | |
2102 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, | |
2103 | mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, | |
2104 | nla_get_u32); | |
2105 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, | |
2106 | mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, | |
2107 | nla_get_u16); | |
2108 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, | |
2109 | dot11MeshHWMPnetDiameterTraversalTime, | |
2110 | mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, | |
2111 | nla_get_u16); | |
2112 | ||
2113 | /* Apply changes */ | |
2114 | rtnl_lock(); | |
2115 | err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask); | |
2116 | rtnl_unlock(); | |
2117 | ||
2118 | /* cleanup */ | |
2119 | cfg80211_put_dev(drv); | |
2120 | dev_put(dev); | |
2121 | return err; | |
2122 | } | |
2123 | ||
2124 | #undef FILL_IN_MESH_PARAM_IF_SET | |
2125 | ||
f130347c LR |
2126 | static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) |
2127 | { | |
2128 | struct sk_buff *msg; | |
2129 | void *hdr = NULL; | |
2130 | struct nlattr *nl_reg_rules; | |
2131 | unsigned int i; | |
2132 | int err = -EINVAL; | |
2133 | ||
a1794390 | 2134 | mutex_lock(&cfg80211_mutex); |
f130347c LR |
2135 | |
2136 | if (!cfg80211_regdomain) | |
2137 | goto out; | |
2138 | ||
2139 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2140 | if (!msg) { | |
2141 | err = -ENOBUFS; | |
2142 | goto out; | |
2143 | } | |
2144 | ||
2145 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
2146 | NL80211_CMD_GET_REG); | |
2147 | if (!hdr) | |
2148 | goto nla_put_failure; | |
2149 | ||
2150 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, | |
2151 | cfg80211_regdomain->alpha2); | |
2152 | ||
2153 | nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); | |
2154 | if (!nl_reg_rules) | |
2155 | goto nla_put_failure; | |
2156 | ||
2157 | for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) { | |
2158 | struct nlattr *nl_reg_rule; | |
2159 | const struct ieee80211_reg_rule *reg_rule; | |
2160 | const struct ieee80211_freq_range *freq_range; | |
2161 | const struct ieee80211_power_rule *power_rule; | |
2162 | ||
2163 | reg_rule = &cfg80211_regdomain->reg_rules[i]; | |
2164 | freq_range = ®_rule->freq_range; | |
2165 | power_rule = ®_rule->power_rule; | |
2166 | ||
2167 | nl_reg_rule = nla_nest_start(msg, i); | |
2168 | if (!nl_reg_rule) | |
2169 | goto nla_put_failure; | |
2170 | ||
2171 | NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS, | |
2172 | reg_rule->flags); | |
2173 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START, | |
2174 | freq_range->start_freq_khz); | |
2175 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END, | |
2176 | freq_range->end_freq_khz); | |
2177 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, | |
2178 | freq_range->max_bandwidth_khz); | |
2179 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, | |
2180 | power_rule->max_antenna_gain); | |
2181 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, | |
2182 | power_rule->max_eirp); | |
2183 | ||
2184 | nla_nest_end(msg, nl_reg_rule); | |
2185 | } | |
2186 | ||
2187 | nla_nest_end(msg, nl_reg_rules); | |
2188 | ||
2189 | genlmsg_end(msg, hdr); | |
2190 | err = genlmsg_unicast(msg, info->snd_pid); | |
2191 | goto out; | |
2192 | ||
2193 | nla_put_failure: | |
2194 | genlmsg_cancel(msg, hdr); | |
2195 | err = -EMSGSIZE; | |
2196 | out: | |
a1794390 | 2197 | mutex_unlock(&cfg80211_mutex); |
f130347c LR |
2198 | return err; |
2199 | } | |
2200 | ||
b2e1b302 LR |
2201 | static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) |
2202 | { | |
2203 | struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; | |
2204 | struct nlattr *nl_reg_rule; | |
2205 | char *alpha2 = NULL; | |
2206 | int rem_reg_rules = 0, r = 0; | |
2207 | u32 num_rules = 0, rule_idx = 0, size_of_regd; | |
2208 | struct ieee80211_regdomain *rd = NULL; | |
2209 | ||
2210 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
2211 | return -EINVAL; | |
2212 | ||
2213 | if (!info->attrs[NL80211_ATTR_REG_RULES]) | |
2214 | return -EINVAL; | |
2215 | ||
2216 | alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
2217 | ||
2218 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
2219 | rem_reg_rules) { | |
2220 | num_rules++; | |
2221 | if (num_rules > NL80211_MAX_SUPP_REG_RULES) | |
2222 | goto bad_reg; | |
2223 | } | |
2224 | ||
2225 | if (!reg_is_valid_request(alpha2)) | |
2226 | return -EINVAL; | |
2227 | ||
2228 | size_of_regd = sizeof(struct ieee80211_regdomain) + | |
2229 | (num_rules * sizeof(struct ieee80211_reg_rule)); | |
2230 | ||
2231 | rd = kzalloc(size_of_regd, GFP_KERNEL); | |
2232 | if (!rd) | |
2233 | return -ENOMEM; | |
2234 | ||
2235 | rd->n_reg_rules = num_rules; | |
2236 | rd->alpha2[0] = alpha2[0]; | |
2237 | rd->alpha2[1] = alpha2[1]; | |
2238 | ||
2239 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
2240 | rem_reg_rules) { | |
2241 | nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, | |
2242 | nla_data(nl_reg_rule), nla_len(nl_reg_rule), | |
2243 | reg_rule_policy); | |
2244 | r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); | |
2245 | if (r) | |
2246 | goto bad_reg; | |
2247 | ||
2248 | rule_idx++; | |
2249 | ||
2250 | if (rule_idx > NL80211_MAX_SUPP_REG_RULES) | |
2251 | goto bad_reg; | |
2252 | } | |
2253 | ||
2254 | BUG_ON(rule_idx != num_rules); | |
2255 | ||
a1794390 | 2256 | mutex_lock(&cfg80211_mutex); |
b2e1b302 | 2257 | r = set_regdom(rd); |
a1794390 | 2258 | mutex_unlock(&cfg80211_mutex); |
b2e1b302 LR |
2259 | return r; |
2260 | ||
d2372b31 | 2261 | bad_reg: |
b2e1b302 LR |
2262 | kfree(rd); |
2263 | return -EINVAL; | |
2264 | } | |
2265 | ||
9aed3cc1 JM |
2266 | static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb, |
2267 | struct genl_info *info) | |
2268 | { | |
2269 | struct cfg80211_registered_device *drv; | |
2270 | int err; | |
2271 | struct net_device *dev; | |
2272 | struct mgmt_extra_ie_params params; | |
2273 | ||
2274 | memset(¶ms, 0, sizeof(params)); | |
2275 | ||
2276 | if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) | |
2277 | return -EINVAL; | |
2278 | params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); | |
2279 | if (params.subtype > 15) | |
2280 | return -EINVAL; /* FC Subtype field is 4 bits (0..15) */ | |
2281 | ||
2282 | if (info->attrs[NL80211_ATTR_IE]) { | |
2283 | params.ies = nla_data(info->attrs[NL80211_ATTR_IE]); | |
2284 | params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
2285 | } | |
2286 | ||
2287 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
2288 | if (err) | |
2289 | return err; | |
2290 | ||
2291 | if (drv->ops->set_mgmt_extra_ie) { | |
2292 | rtnl_lock(); | |
2293 | err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, ¶ms); | |
2294 | rtnl_unlock(); | |
2295 | } else | |
2296 | err = -EOPNOTSUPP; | |
2297 | ||
2298 | cfg80211_put_dev(drv); | |
2299 | dev_put(dev); | |
2300 | return err; | |
2301 | } | |
2302 | ||
2a519311 JB |
2303 | static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) |
2304 | { | |
2305 | struct cfg80211_registered_device *drv; | |
2306 | struct net_device *dev; | |
2307 | struct cfg80211_scan_request *request; | |
2308 | struct cfg80211_ssid *ssid; | |
2309 | struct ieee80211_channel *channel; | |
2310 | struct nlattr *attr; | |
2311 | struct wiphy *wiphy; | |
2312 | int err, tmp, n_ssids = 0, n_channels = 0, i; | |
2313 | enum ieee80211_band band; | |
70692ad2 | 2314 | size_t ie_len; |
2a519311 JB |
2315 | |
2316 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
2317 | if (err) | |
2318 | return err; | |
2319 | ||
2320 | wiphy = &drv->wiphy; | |
2321 | ||
2322 | if (!drv->ops->scan) { | |
2323 | err = -EOPNOTSUPP; | |
2324 | goto out; | |
2325 | } | |
2326 | ||
2327 | rtnl_lock(); | |
2328 | ||
2329 | if (drv->scan_req) { | |
2330 | err = -EBUSY; | |
2331 | goto out_unlock; | |
2332 | } | |
2333 | ||
2334 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { | |
2335 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) | |
2336 | n_channels++; | |
2337 | if (!n_channels) { | |
2338 | err = -EINVAL; | |
2339 | goto out_unlock; | |
2340 | } | |
2341 | } else { | |
2342 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) | |
2343 | if (wiphy->bands[band]) | |
2344 | n_channels += wiphy->bands[band]->n_channels; | |
2345 | } | |
2346 | ||
2347 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) | |
2348 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) | |
2349 | n_ssids++; | |
2350 | ||
2351 | if (n_ssids > wiphy->max_scan_ssids) { | |
2352 | err = -EINVAL; | |
2353 | goto out_unlock; | |
2354 | } | |
2355 | ||
70692ad2 JM |
2356 | if (info->attrs[NL80211_ATTR_IE]) |
2357 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
2358 | else | |
2359 | ie_len = 0; | |
2360 | ||
2a519311 JB |
2361 | request = kzalloc(sizeof(*request) |
2362 | + sizeof(*ssid) * n_ssids | |
70692ad2 JM |
2363 | + sizeof(channel) * n_channels |
2364 | + ie_len, GFP_KERNEL); | |
2a519311 JB |
2365 | if (!request) { |
2366 | err = -ENOMEM; | |
2367 | goto out_unlock; | |
2368 | } | |
2369 | ||
2370 | request->channels = (void *)((char *)request + sizeof(*request)); | |
2371 | request->n_channels = n_channels; | |
2372 | if (n_ssids) | |
2373 | request->ssids = (void *)(request->channels + n_channels); | |
2374 | request->n_ssids = n_ssids; | |
70692ad2 JM |
2375 | if (ie_len) { |
2376 | if (request->ssids) | |
2377 | request->ie = (void *)(request->ssids + n_ssids); | |
2378 | else | |
2379 | request->ie = (void *)(request->channels + n_channels); | |
2380 | } | |
2a519311 JB |
2381 | |
2382 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { | |
2383 | /* user specified, bail out if channel not found */ | |
2384 | request->n_channels = n_channels; | |
2385 | i = 0; | |
2386 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { | |
2387 | request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr)); | |
2388 | if (!request->channels[i]) { | |
2389 | err = -EINVAL; | |
2390 | goto out_free; | |
2391 | } | |
2392 | i++; | |
2393 | } | |
2394 | } else { | |
2395 | /* all channels */ | |
2396 | i = 0; | |
2397 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
2398 | int j; | |
2399 | if (!wiphy->bands[band]) | |
2400 | continue; | |
2401 | for (j = 0; j < wiphy->bands[band]->n_channels; j++) { | |
2402 | request->channels[i] = &wiphy->bands[band]->channels[j]; | |
2403 | i++; | |
2404 | } | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | i = 0; | |
2409 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { | |
2410 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { | |
2411 | if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) { | |
2412 | err = -EINVAL; | |
2413 | goto out_free; | |
2414 | } | |
2415 | memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); | |
2416 | request->ssids[i].ssid_len = nla_len(attr); | |
2417 | i++; | |
2418 | } | |
2419 | } | |
2420 | ||
70692ad2 JM |
2421 | if (info->attrs[NL80211_ATTR_IE]) { |
2422 | request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
2423 | memcpy(request->ie, nla_data(info->attrs[NL80211_ATTR_IE]), | |
2424 | request->ie_len); | |
2425 | } | |
2426 | ||
2a519311 JB |
2427 | request->ifidx = dev->ifindex; |
2428 | request->wiphy = &drv->wiphy; | |
2429 | ||
2430 | drv->scan_req = request; | |
2431 | err = drv->ops->scan(&drv->wiphy, dev, request); | |
2432 | ||
2433 | out_free: | |
2434 | if (err) { | |
2435 | drv->scan_req = NULL; | |
2436 | kfree(request); | |
2437 | } | |
2438 | out_unlock: | |
2439 | rtnl_unlock(); | |
2440 | out: | |
2441 | cfg80211_put_dev(drv); | |
2442 | dev_put(dev); | |
2443 | return err; | |
2444 | } | |
2445 | ||
2446 | static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
2447 | struct cfg80211_registered_device *rdev, | |
2448 | struct net_device *dev, | |
2449 | struct cfg80211_bss *res) | |
2450 | { | |
2451 | void *hdr; | |
2452 | struct nlattr *bss; | |
2453 | ||
2454 | hdr = nl80211hdr_put(msg, pid, seq, flags, | |
2455 | NL80211_CMD_NEW_SCAN_RESULTS); | |
2456 | if (!hdr) | |
2457 | return -1; | |
2458 | ||
2459 | NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION, | |
2460 | rdev->bss_generation); | |
2461 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
2462 | ||
2463 | bss = nla_nest_start(msg, NL80211_ATTR_BSS); | |
2464 | if (!bss) | |
2465 | goto nla_put_failure; | |
2466 | if (!is_zero_ether_addr(res->bssid)) | |
2467 | NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); | |
2468 | if (res->information_elements && res->len_information_elements) | |
2469 | NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, | |
2470 | res->len_information_elements, | |
2471 | res->information_elements); | |
2472 | if (res->tsf) | |
2473 | NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); | |
2474 | if (res->beacon_interval) | |
2475 | NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); | |
2476 | NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); | |
2477 | NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); | |
2478 | ||
77965c97 | 2479 | switch (rdev->wiphy.signal_type) { |
2a519311 JB |
2480 | case CFG80211_SIGNAL_TYPE_MBM: |
2481 | NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); | |
2482 | break; | |
2483 | case CFG80211_SIGNAL_TYPE_UNSPEC: | |
2484 | NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); | |
2485 | break; | |
2486 | default: | |
2487 | break; | |
2488 | } | |
2489 | ||
2490 | nla_nest_end(msg, bss); | |
2491 | ||
2492 | return genlmsg_end(msg, hdr); | |
2493 | ||
2494 | nla_put_failure: | |
2495 | genlmsg_cancel(msg, hdr); | |
2496 | return -EMSGSIZE; | |
2497 | } | |
2498 | ||
2499 | static int nl80211_dump_scan(struct sk_buff *skb, | |
2500 | struct netlink_callback *cb) | |
2501 | { | |
2502 | struct cfg80211_registered_device *dev; | |
2503 | struct net_device *netdev; | |
2504 | struct cfg80211_internal_bss *scan; | |
2505 | int ifidx = cb->args[0]; | |
2506 | int start = cb->args[1], idx = 0; | |
2507 | int err; | |
2508 | ||
2509 | if (!ifidx) { | |
2510 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
2511 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
2512 | nl80211_policy); | |
2513 | if (err) | |
2514 | return err; | |
2515 | ||
2516 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
2517 | return -EINVAL; | |
2518 | ||
2519 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
2520 | if (!ifidx) | |
2521 | return -EINVAL; | |
2522 | cb->args[0] = ifidx; | |
2523 | } | |
2524 | ||
2525 | netdev = dev_get_by_index(&init_net, ifidx); | |
2526 | if (!netdev) | |
2527 | return -ENODEV; | |
2528 | ||
2529 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
2530 | if (IS_ERR(dev)) { | |
2531 | err = PTR_ERR(dev); | |
2532 | goto out_put_netdev; | |
2533 | } | |
2534 | ||
2535 | spin_lock_bh(&dev->bss_lock); | |
2536 | cfg80211_bss_expire(dev); | |
2537 | ||
2538 | list_for_each_entry(scan, &dev->bss_list, list) { | |
2539 | if (++idx <= start) | |
2540 | continue; | |
2541 | if (nl80211_send_bss(skb, | |
2542 | NETLINK_CB(cb->skb).pid, | |
2543 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
2544 | dev, netdev, &scan->pub) < 0) { | |
2545 | idx--; | |
2546 | goto out; | |
2547 | } | |
2548 | } | |
2549 | ||
2550 | out: | |
2551 | spin_unlock_bh(&dev->bss_lock); | |
2552 | ||
2553 | cb->args[1] = idx; | |
2554 | err = skb->len; | |
2555 | cfg80211_put_dev(dev); | |
2556 | out_put_netdev: | |
2557 | dev_put(netdev); | |
2558 | ||
2559 | return err; | |
2560 | } | |
2561 | ||
55682965 JB |
2562 | static struct genl_ops nl80211_ops[] = { |
2563 | { | |
2564 | .cmd = NL80211_CMD_GET_WIPHY, | |
2565 | .doit = nl80211_get_wiphy, | |
2566 | .dumpit = nl80211_dump_wiphy, | |
2567 | .policy = nl80211_policy, | |
2568 | /* can be retrieved by unprivileged users */ | |
2569 | }, | |
2570 | { | |
2571 | .cmd = NL80211_CMD_SET_WIPHY, | |
2572 | .doit = nl80211_set_wiphy, | |
2573 | .policy = nl80211_policy, | |
2574 | .flags = GENL_ADMIN_PERM, | |
2575 | }, | |
2576 | { | |
2577 | .cmd = NL80211_CMD_GET_INTERFACE, | |
2578 | .doit = nl80211_get_interface, | |
2579 | .dumpit = nl80211_dump_interface, | |
2580 | .policy = nl80211_policy, | |
2581 | /* can be retrieved by unprivileged users */ | |
2582 | }, | |
2583 | { | |
2584 | .cmd = NL80211_CMD_SET_INTERFACE, | |
2585 | .doit = nl80211_set_interface, | |
2586 | .policy = nl80211_policy, | |
2587 | .flags = GENL_ADMIN_PERM, | |
2588 | }, | |
2589 | { | |
2590 | .cmd = NL80211_CMD_NEW_INTERFACE, | |
2591 | .doit = nl80211_new_interface, | |
2592 | .policy = nl80211_policy, | |
2593 | .flags = GENL_ADMIN_PERM, | |
2594 | }, | |
2595 | { | |
2596 | .cmd = NL80211_CMD_DEL_INTERFACE, | |
2597 | .doit = nl80211_del_interface, | |
2598 | .policy = nl80211_policy, | |
41ade00f JB |
2599 | .flags = GENL_ADMIN_PERM, |
2600 | }, | |
2601 | { | |
2602 | .cmd = NL80211_CMD_GET_KEY, | |
2603 | .doit = nl80211_get_key, | |
2604 | .policy = nl80211_policy, | |
2605 | .flags = GENL_ADMIN_PERM, | |
2606 | }, | |
2607 | { | |
2608 | .cmd = NL80211_CMD_SET_KEY, | |
2609 | .doit = nl80211_set_key, | |
2610 | .policy = nl80211_policy, | |
2611 | .flags = GENL_ADMIN_PERM, | |
2612 | }, | |
2613 | { | |
2614 | .cmd = NL80211_CMD_NEW_KEY, | |
2615 | .doit = nl80211_new_key, | |
2616 | .policy = nl80211_policy, | |
2617 | .flags = GENL_ADMIN_PERM, | |
2618 | }, | |
2619 | { | |
2620 | .cmd = NL80211_CMD_DEL_KEY, | |
2621 | .doit = nl80211_del_key, | |
2622 | .policy = nl80211_policy, | |
55682965 JB |
2623 | .flags = GENL_ADMIN_PERM, |
2624 | }, | |
ed1b6cc7 JB |
2625 | { |
2626 | .cmd = NL80211_CMD_SET_BEACON, | |
2627 | .policy = nl80211_policy, | |
2628 | .flags = GENL_ADMIN_PERM, | |
2629 | .doit = nl80211_addset_beacon, | |
2630 | }, | |
2631 | { | |
2632 | .cmd = NL80211_CMD_NEW_BEACON, | |
2633 | .policy = nl80211_policy, | |
2634 | .flags = GENL_ADMIN_PERM, | |
2635 | .doit = nl80211_addset_beacon, | |
2636 | }, | |
2637 | { | |
2638 | .cmd = NL80211_CMD_DEL_BEACON, | |
2639 | .policy = nl80211_policy, | |
2640 | .flags = GENL_ADMIN_PERM, | |
2641 | .doit = nl80211_del_beacon, | |
2642 | }, | |
5727ef1b JB |
2643 | { |
2644 | .cmd = NL80211_CMD_GET_STATION, | |
2645 | .doit = nl80211_get_station, | |
2ec600d6 | 2646 | .dumpit = nl80211_dump_station, |
5727ef1b | 2647 | .policy = nl80211_policy, |
5727ef1b JB |
2648 | }, |
2649 | { | |
2650 | .cmd = NL80211_CMD_SET_STATION, | |
2651 | .doit = nl80211_set_station, | |
2652 | .policy = nl80211_policy, | |
2653 | .flags = GENL_ADMIN_PERM, | |
2654 | }, | |
2655 | { | |
2656 | .cmd = NL80211_CMD_NEW_STATION, | |
2657 | .doit = nl80211_new_station, | |
2658 | .policy = nl80211_policy, | |
2659 | .flags = GENL_ADMIN_PERM, | |
2660 | }, | |
2661 | { | |
2662 | .cmd = NL80211_CMD_DEL_STATION, | |
2663 | .doit = nl80211_del_station, | |
2664 | .policy = nl80211_policy, | |
2ec600d6 LCC |
2665 | .flags = GENL_ADMIN_PERM, |
2666 | }, | |
2667 | { | |
2668 | .cmd = NL80211_CMD_GET_MPATH, | |
2669 | .doit = nl80211_get_mpath, | |
2670 | .dumpit = nl80211_dump_mpath, | |
2671 | .policy = nl80211_policy, | |
2672 | .flags = GENL_ADMIN_PERM, | |
2673 | }, | |
2674 | { | |
2675 | .cmd = NL80211_CMD_SET_MPATH, | |
2676 | .doit = nl80211_set_mpath, | |
2677 | .policy = nl80211_policy, | |
2678 | .flags = GENL_ADMIN_PERM, | |
2679 | }, | |
2680 | { | |
2681 | .cmd = NL80211_CMD_NEW_MPATH, | |
2682 | .doit = nl80211_new_mpath, | |
2683 | .policy = nl80211_policy, | |
2684 | .flags = GENL_ADMIN_PERM, | |
2685 | }, | |
2686 | { | |
2687 | .cmd = NL80211_CMD_DEL_MPATH, | |
2688 | .doit = nl80211_del_mpath, | |
2689 | .policy = nl80211_policy, | |
9f1ba906 JM |
2690 | .flags = GENL_ADMIN_PERM, |
2691 | }, | |
2692 | { | |
2693 | .cmd = NL80211_CMD_SET_BSS, | |
2694 | .doit = nl80211_set_bss, | |
2695 | .policy = nl80211_policy, | |
b2e1b302 LR |
2696 | .flags = GENL_ADMIN_PERM, |
2697 | }, | |
f130347c LR |
2698 | { |
2699 | .cmd = NL80211_CMD_GET_REG, | |
2700 | .doit = nl80211_get_reg, | |
2701 | .policy = nl80211_policy, | |
2702 | /* can be retrieved by unprivileged users */ | |
2703 | }, | |
b2e1b302 LR |
2704 | { |
2705 | .cmd = NL80211_CMD_SET_REG, | |
2706 | .doit = nl80211_set_reg, | |
2707 | .policy = nl80211_policy, | |
2708 | .flags = GENL_ADMIN_PERM, | |
2709 | }, | |
2710 | { | |
2711 | .cmd = NL80211_CMD_REQ_SET_REG, | |
2712 | .doit = nl80211_req_set_reg, | |
2713 | .policy = nl80211_policy, | |
93da9cc1 | 2714 | .flags = GENL_ADMIN_PERM, |
2715 | }, | |
2716 | { | |
2717 | .cmd = NL80211_CMD_GET_MESH_PARAMS, | |
2718 | .doit = nl80211_get_mesh_params, | |
2719 | .policy = nl80211_policy, | |
2720 | /* can be retrieved by unprivileged users */ | |
2721 | }, | |
2722 | { | |
2723 | .cmd = NL80211_CMD_SET_MESH_PARAMS, | |
2724 | .doit = nl80211_set_mesh_params, | |
2725 | .policy = nl80211_policy, | |
9aed3cc1 JM |
2726 | .flags = GENL_ADMIN_PERM, |
2727 | }, | |
2728 | { | |
2729 | .cmd = NL80211_CMD_SET_MGMT_EXTRA_IE, | |
2730 | .doit = nl80211_set_mgmt_extra_ie, | |
2731 | .policy = nl80211_policy, | |
5727ef1b JB |
2732 | .flags = GENL_ADMIN_PERM, |
2733 | }, | |
2a519311 JB |
2734 | { |
2735 | .cmd = NL80211_CMD_TRIGGER_SCAN, | |
2736 | .doit = nl80211_trigger_scan, | |
2737 | .policy = nl80211_policy, | |
2738 | .flags = GENL_ADMIN_PERM, | |
2739 | }, | |
2740 | { | |
2741 | .cmd = NL80211_CMD_GET_SCAN, | |
2742 | .policy = nl80211_policy, | |
2743 | .dumpit = nl80211_dump_scan, | |
2744 | }, | |
55682965 JB |
2745 | }; |
2746 | ||
2747 | /* multicast groups */ | |
2748 | static struct genl_multicast_group nl80211_config_mcgrp = { | |
2749 | .name = "config", | |
2750 | }; | |
2a519311 JB |
2751 | static struct genl_multicast_group nl80211_scan_mcgrp = { |
2752 | .name = "scan", | |
2753 | }; | |
55682965 JB |
2754 | |
2755 | /* notification functions */ | |
2756 | ||
2757 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) | |
2758 | { | |
2759 | struct sk_buff *msg; | |
2760 | ||
2761 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2762 | if (!msg) | |
2763 | return; | |
2764 | ||
2765 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { | |
2766 | nlmsg_free(msg); | |
2767 | return; | |
2768 | } | |
2769 | ||
2770 | genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); | |
2771 | } | |
2772 | ||
2a519311 JB |
2773 | static int nl80211_send_scan_donemsg(struct sk_buff *msg, |
2774 | struct cfg80211_registered_device *rdev, | |
2775 | struct net_device *netdev, | |
2776 | u32 pid, u32 seq, int flags, | |
2777 | u32 cmd) | |
2778 | { | |
2779 | void *hdr; | |
2780 | ||
2781 | hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); | |
2782 | if (!hdr) | |
2783 | return -1; | |
2784 | ||
b5850a7a | 2785 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
2a519311 JB |
2786 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
2787 | ||
2788 | /* XXX: we should probably bounce back the request? */ | |
2789 | ||
2790 | return genlmsg_end(msg, hdr); | |
2791 | ||
2792 | nla_put_failure: | |
2793 | genlmsg_cancel(msg, hdr); | |
2794 | return -EMSGSIZE; | |
2795 | } | |
2796 | ||
2797 | void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, | |
2798 | struct net_device *netdev) | |
2799 | { | |
2800 | struct sk_buff *msg; | |
2801 | ||
2802 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2803 | if (!msg) | |
2804 | return; | |
2805 | ||
2806 | if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, | |
2807 | NL80211_CMD_NEW_SCAN_RESULTS) < 0) { | |
2808 | nlmsg_free(msg); | |
2809 | return; | |
2810 | } | |
2811 | ||
2812 | genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); | |
2813 | } | |
2814 | ||
2815 | void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, | |
2816 | struct net_device *netdev) | |
2817 | { | |
2818 | struct sk_buff *msg; | |
2819 | ||
2820 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2821 | if (!msg) | |
2822 | return; | |
2823 | ||
2824 | if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, | |
2825 | NL80211_CMD_SCAN_ABORTED) < 0) { | |
2826 | nlmsg_free(msg); | |
2827 | return; | |
2828 | } | |
2829 | ||
2830 | genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); | |
2831 | } | |
2832 | ||
55682965 JB |
2833 | /* initialisation/exit functions */ |
2834 | ||
2835 | int nl80211_init(void) | |
2836 | { | |
2837 | int err, i; | |
2838 | ||
2839 | err = genl_register_family(&nl80211_fam); | |
2840 | if (err) | |
2841 | return err; | |
2842 | ||
2843 | for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { | |
2844 | err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); | |
2845 | if (err) | |
2846 | goto err_out; | |
2847 | } | |
2848 | ||
2849 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); | |
2850 | if (err) | |
2851 | goto err_out; | |
2852 | ||
2a519311 JB |
2853 | err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); |
2854 | if (err) | |
2855 | goto err_out; | |
2856 | ||
55682965 JB |
2857 | return 0; |
2858 | err_out: | |
2859 | genl_unregister_family(&nl80211_fam); | |
2860 | return err; | |
2861 | } | |
2862 | ||
2863 | void nl80211_exit(void) | |
2864 | { | |
2865 | genl_unregister_family(&nl80211_fam); | |
2866 | } |