Root/
1 | /* |
2 | * This is the new netlink-based wireless configuration interface. |
3 | * |
4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
5 | */ |
6 | |
7 | #include <linux/if.h> |
8 | #include <linux/module.h> |
9 | #include <linux/err.h> |
10 | #include <linux/slab.h> |
11 | #include <linux/list.h> |
12 | #include <linux/if_ether.h> |
13 | #include <linux/ieee80211.h> |
14 | #include <linux/nl80211.h> |
15 | #include <linux/rtnetlink.h> |
16 | #include <linux/netlink.h> |
17 | #include <linux/etherdevice.h> |
18 | #include <net/net_namespace.h> |
19 | #include <net/genetlink.h> |
20 | #include <net/cfg80211.h> |
21 | #include <net/sock.h> |
22 | #include "core.h" |
23 | #include "nl80211.h" |
24 | #include "reg.h" |
25 | |
26 | /* the netlink family */ |
27 | static struct genl_family nl80211_fam = { |
28 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ |
29 | .name = "nl80211", /* have users key off the name instead */ |
30 | .hdrsize = 0, /* no private header */ |
31 | .version = 1, /* no particular meaning now */ |
32 | .maxattr = NL80211_ATTR_MAX, |
33 | .netnsok = true, |
34 | }; |
35 | |
36 | /* internal helper: get rdev and dev */ |
37 | static int get_rdev_dev_by_info_ifindex(struct genl_info *info, |
38 | struct cfg80211_registered_device **rdev, |
39 | struct net_device **dev) |
40 | { |
41 | struct nlattr **attrs = info->attrs; |
42 | int ifindex; |
43 | |
44 | if (!attrs[NL80211_ATTR_IFINDEX]) |
45 | return -EINVAL; |
46 | |
47 | ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); |
48 | *dev = dev_get_by_index(genl_info_net(info), ifindex); |
49 | if (!*dev) |
50 | return -ENODEV; |
51 | |
52 | *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex); |
53 | if (IS_ERR(*rdev)) { |
54 | dev_put(*dev); |
55 | return PTR_ERR(*rdev); |
56 | } |
57 | |
58 | return 0; |
59 | } |
60 | |
61 | /* policy for the attributes */ |
62 | static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { |
63 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, |
64 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, |
65 | .len = 20-1 }, |
66 | [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, |
67 | [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, |
68 | [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, |
69 | [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, |
70 | [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, |
71 | [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, |
72 | [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, |
73 | [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, |
74 | |
75 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, |
76 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, |
77 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, |
78 | |
79 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, |
80 | [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN }, |
81 | |
82 | [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, |
83 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, |
84 | .len = WLAN_MAX_KEY_LEN }, |
85 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, |
86 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, |
87 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, |
88 | [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, |
89 | |
90 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, |
91 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, |
92 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, |
93 | .len = IEEE80211_MAX_DATA_LEN }, |
94 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, |
95 | .len = IEEE80211_MAX_DATA_LEN }, |
96 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, |
97 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, |
98 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, |
99 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, |
100 | .len = NL80211_MAX_SUPP_RATES }, |
101 | [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, |
102 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, |
103 | [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, |
104 | [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, |
105 | .len = IEEE80211_MAX_MESH_ID_LEN }, |
106 | [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, |
107 | |
108 | [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, |
109 | [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, |
110 | |
111 | [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, |
112 | [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, |
113 | [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, |
114 | [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, |
115 | .len = NL80211_MAX_SUPP_RATES }, |
116 | |
117 | [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED }, |
118 | |
119 | [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, |
120 | .len = NL80211_HT_CAPABILITY_LEN }, |
121 | |
122 | [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, |
123 | [NL80211_ATTR_IE] = { .type = NLA_BINARY, |
124 | .len = IEEE80211_MAX_DATA_LEN }, |
125 | [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, |
126 | [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, |
127 | |
128 | [NL80211_ATTR_SSID] = { .type = NLA_BINARY, |
129 | .len = IEEE80211_MAX_SSID_LEN }, |
130 | [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, |
131 | [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, |
132 | [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, |
133 | [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, |
134 | [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, |
135 | [NL80211_ATTR_STA_FLAGS2] = { |
136 | .len = sizeof(struct nl80211_sta_flag_update), |
137 | }, |
138 | [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, |
139 | [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, |
140 | [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, |
141 | [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, |
142 | [NL80211_ATTR_PID] = { .type = NLA_U32 }, |
143 | [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, |
144 | [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, |
145 | .len = WLAN_PMKID_LEN }, |
146 | [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, |
147 | [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, |
148 | [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, |
149 | [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, |
150 | .len = IEEE80211_MAX_DATA_LEN }, |
151 | [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, |
152 | [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, |
153 | [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, |
154 | [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, |
155 | [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, |
156 | |
157 | [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, |
158 | [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, |
159 | }; |
160 | |
161 | /* policy for the attributes */ |
162 | static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { |
163 | [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, |
164 | [NL80211_KEY_IDX] = { .type = NLA_U8 }, |
165 | [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, |
166 | [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, |
167 | [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, |
168 | [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, |
169 | }; |
170 | |
171 | /* ifidx get helper */ |
172 | static int nl80211_get_ifidx(struct netlink_callback *cb) |
173 | { |
174 | int res; |
175 | |
176 | res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, |
177 | nl80211_fam.attrbuf, nl80211_fam.maxattr, |
178 | nl80211_policy); |
179 | if (res) |
180 | return res; |
181 | |
182 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
183 | return -EINVAL; |
184 | |
185 | res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
186 | if (!res) |
187 | return -EINVAL; |
188 | return res; |
189 | } |
190 | |
191 | /* IE validation */ |
192 | static bool is_valid_ie_attr(const struct nlattr *attr) |
193 | { |
194 | const u8 *pos; |
195 | int len; |
196 | |
197 | if (!attr) |
198 | return true; |
199 | |
200 | pos = nla_data(attr); |
201 | len = nla_len(attr); |
202 | |
203 | while (len) { |
204 | u8 elemlen; |
205 | |
206 | if (len < 2) |
207 | return false; |
208 | len -= 2; |
209 | |
210 | elemlen = pos[1]; |
211 | if (elemlen > len) |
212 | return false; |
213 | |
214 | len -= elemlen; |
215 | pos += 2 + elemlen; |
216 | } |
217 | |
218 | return true; |
219 | } |
220 | |
221 | /* message building helper */ |
222 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, |
223 | int flags, u8 cmd) |
224 | { |
225 | /* since there is no private header just add the generic one */ |
226 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); |
227 | } |
228 | |
229 | static int nl80211_msg_put_channel(struct sk_buff *msg, |
230 | struct ieee80211_channel *chan) |
231 | { |
232 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, |
233 | chan->center_freq); |
234 | |
235 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
236 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); |
237 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
238 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); |
239 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) |
240 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); |
241 | if (chan->flags & IEEE80211_CHAN_RADAR) |
242 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); |
243 | |
244 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, |
245 | DBM_TO_MBM(chan->max_power)); |
246 | |
247 | return 0; |
248 | |
249 | nla_put_failure: |
250 | return -ENOBUFS; |
251 | } |
252 | |
253 | /* netlink command implementations */ |
254 | |
255 | struct key_parse { |
256 | struct key_params p; |
257 | int idx; |
258 | bool def, defmgmt; |
259 | }; |
260 | |
261 | static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) |
262 | { |
263 | struct nlattr *tb[NL80211_KEY_MAX + 1]; |
264 | int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, |
265 | nl80211_key_policy); |
266 | if (err) |
267 | return err; |
268 | |
269 | k->def = !!tb[NL80211_KEY_DEFAULT]; |
270 | k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; |
271 | |
272 | if (tb[NL80211_KEY_IDX]) |
273 | k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); |
274 | |
275 | if (tb[NL80211_KEY_DATA]) { |
276 | k->p.key = nla_data(tb[NL80211_KEY_DATA]); |
277 | k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); |
278 | } |
279 | |
280 | if (tb[NL80211_KEY_SEQ]) { |
281 | k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); |
282 | k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); |
283 | } |
284 | |
285 | if (tb[NL80211_KEY_CIPHER]) |
286 | k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); |
287 | |
288 | return 0; |
289 | } |
290 | |
291 | static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) |
292 | { |
293 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { |
294 | k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); |
295 | k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); |
296 | } |
297 | |
298 | if (info->attrs[NL80211_ATTR_KEY_SEQ]) { |
299 | k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); |
300 | k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); |
301 | } |
302 | |
303 | if (info->attrs[NL80211_ATTR_KEY_IDX]) |
304 | k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
305 | |
306 | if (info->attrs[NL80211_ATTR_KEY_CIPHER]) |
307 | k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); |
308 | |
309 | k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; |
310 | k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; |
311 | |
312 | return 0; |
313 | } |
314 | |
315 | static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) |
316 | { |
317 | int err; |
318 | |
319 | memset(k, 0, sizeof(*k)); |
320 | k->idx = -1; |
321 | |
322 | if (info->attrs[NL80211_ATTR_KEY]) |
323 | err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); |
324 | else |
325 | err = nl80211_parse_key_old(info, k); |
326 | |
327 | if (err) |
328 | return err; |
329 | |
330 | if (k->def && k->defmgmt) |
331 | return -EINVAL; |
332 | |
333 | if (k->idx != -1) { |
334 | if (k->defmgmt) { |
335 | if (k->idx < 4 || k->idx > 5) |
336 | return -EINVAL; |
337 | } else if (k->def) { |
338 | if (k->idx < 0 || k->idx > 3) |
339 | return -EINVAL; |
340 | } else { |
341 | if (k->idx < 0 || k->idx > 5) |
342 | return -EINVAL; |
343 | } |
344 | } |
345 | |
346 | return 0; |
347 | } |
348 | |
349 | static struct cfg80211_cached_keys * |
350 | nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, |
351 | struct nlattr *keys) |
352 | { |
353 | struct key_parse parse; |
354 | struct nlattr *key; |
355 | struct cfg80211_cached_keys *result; |
356 | int rem, err, def = 0; |
357 | |
358 | result = kzalloc(sizeof(*result), GFP_KERNEL); |
359 | if (!result) |
360 | return ERR_PTR(-ENOMEM); |
361 | |
362 | result->def = -1; |
363 | result->defmgmt = -1; |
364 | |
365 | nla_for_each_nested(key, keys, rem) { |
366 | memset(&parse, 0, sizeof(parse)); |
367 | parse.idx = -1; |
368 | |
369 | err = nl80211_parse_key_new(key, &parse); |
370 | if (err) |
371 | goto error; |
372 | err = -EINVAL; |
373 | if (!parse.p.key) |
374 | goto error; |
375 | if (parse.idx < 0 || parse.idx > 4) |
376 | goto error; |
377 | if (parse.def) { |
378 | if (def) |
379 | goto error; |
380 | def = 1; |
381 | result->def = parse.idx; |
382 | } else if (parse.defmgmt) |
383 | goto error; |
384 | err = cfg80211_validate_key_settings(rdev, &parse.p, |
385 | parse.idx, NULL); |
386 | if (err) |
387 | goto error; |
388 | result->params[parse.idx].cipher = parse.p.cipher; |
389 | result->params[parse.idx].key_len = parse.p.key_len; |
390 | result->params[parse.idx].key = result->data[parse.idx]; |
391 | memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); |
392 | } |
393 | |
394 | return result; |
395 | error: |
396 | kfree(result); |
397 | return ERR_PTR(err); |
398 | } |
399 | |
400 | static int nl80211_key_allowed(struct wireless_dev *wdev) |
401 | { |
402 | ASSERT_WDEV_LOCK(wdev); |
403 | |
404 | if (!netif_running(wdev->netdev)) |
405 | return -ENETDOWN; |
406 | |
407 | switch (wdev->iftype) { |
408 | case NL80211_IFTYPE_AP: |
409 | case NL80211_IFTYPE_AP_VLAN: |
410 | break; |
411 | case NL80211_IFTYPE_ADHOC: |
412 | if (!wdev->current_bss) |
413 | return -ENOLINK; |
414 | break; |
415 | case NL80211_IFTYPE_STATION: |
416 | if (wdev->sme_state != CFG80211_SME_CONNECTED) |
417 | return -ENOLINK; |
418 | break; |
419 | default: |
420 | return -EINVAL; |
421 | } |
422 | |
423 | return 0; |
424 | } |
425 | |
426 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
427 | struct cfg80211_registered_device *dev) |
428 | { |
429 | void *hdr; |
430 | struct nlattr *nl_bands, *nl_band; |
431 | struct nlattr *nl_freqs, *nl_freq; |
432 | struct nlattr *nl_rates, *nl_rate; |
433 | struct nlattr *nl_modes; |
434 | struct nlattr *nl_cmds; |
435 | enum ieee80211_band band; |
436 | struct ieee80211_channel *chan; |
437 | struct ieee80211_rate *rate; |
438 | int i; |
439 | u16 ifmodes = dev->wiphy.interface_modes; |
440 | |
441 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); |
442 | if (!hdr) |
443 | return -1; |
444 | |
445 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx); |
446 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); |
447 | |
448 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, |
449 | cfg80211_rdev_list_generation); |
450 | |
451 | NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, |
452 | dev->wiphy.retry_short); |
453 | NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, |
454 | dev->wiphy.retry_long); |
455 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, |
456 | dev->wiphy.frag_threshold); |
457 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, |
458 | dev->wiphy.rts_threshold); |
459 | NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, |
460 | dev->wiphy.coverage_class); |
461 | |
462 | NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, |
463 | dev->wiphy.max_scan_ssids); |
464 | NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, |
465 | dev->wiphy.max_scan_ie_len); |
466 | |
467 | NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES, |
468 | sizeof(u32) * dev->wiphy.n_cipher_suites, |
469 | dev->wiphy.cipher_suites); |
470 | |
471 | NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, |
472 | dev->wiphy.max_num_pmkids); |
473 | |
474 | nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); |
475 | if (!nl_modes) |
476 | goto nla_put_failure; |
477 | |
478 | i = 0; |
479 | while (ifmodes) { |
480 | if (ifmodes & 1) |
481 | NLA_PUT_FLAG(msg, i); |
482 | ifmodes >>= 1; |
483 | i++; |
484 | } |
485 | |
486 | nla_nest_end(msg, nl_modes); |
487 | |
488 | nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); |
489 | if (!nl_bands) |
490 | goto nla_put_failure; |
491 | |
492 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
493 | if (!dev->wiphy.bands[band]) |
494 | continue; |
495 | |
496 | nl_band = nla_nest_start(msg, band); |
497 | if (!nl_band) |
498 | goto nla_put_failure; |
499 | |
500 | /* add HT info */ |
501 | if (dev->wiphy.bands[band]->ht_cap.ht_supported) { |
502 | NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET, |
503 | sizeof(dev->wiphy.bands[band]->ht_cap.mcs), |
504 | &dev->wiphy.bands[band]->ht_cap.mcs); |
505 | NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA, |
506 | dev->wiphy.bands[band]->ht_cap.cap); |
507 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, |
508 | dev->wiphy.bands[band]->ht_cap.ampdu_factor); |
509 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, |
510 | dev->wiphy.bands[band]->ht_cap.ampdu_density); |
511 | } |
512 | |
513 | /* add frequencies */ |
514 | nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); |
515 | if (!nl_freqs) |
516 | goto nla_put_failure; |
517 | |
518 | for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { |
519 | nl_freq = nla_nest_start(msg, i); |
520 | if (!nl_freq) |
521 | goto nla_put_failure; |
522 | |
523 | chan = &dev->wiphy.bands[band]->channels[i]; |
524 | |
525 | if (nl80211_msg_put_channel(msg, chan)) |
526 | goto nla_put_failure; |
527 | |
528 | nla_nest_end(msg, nl_freq); |
529 | } |
530 | |
531 | nla_nest_end(msg, nl_freqs); |
532 | |
533 | /* add bitrates */ |
534 | nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); |
535 | if (!nl_rates) |
536 | goto nla_put_failure; |
537 | |
538 | for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { |
539 | nl_rate = nla_nest_start(msg, i); |
540 | if (!nl_rate) |
541 | goto nla_put_failure; |
542 | |
543 | rate = &dev->wiphy.bands[band]->bitrates[i]; |
544 | NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, |
545 | rate->bitrate); |
546 | if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) |
547 | NLA_PUT_FLAG(msg, |
548 | NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); |
549 | |
550 | nla_nest_end(msg, nl_rate); |
551 | } |
552 | |
553 | nla_nest_end(msg, nl_rates); |
554 | |
555 | nla_nest_end(msg, nl_band); |
556 | } |
557 | nla_nest_end(msg, nl_bands); |
558 | |
559 | nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); |
560 | if (!nl_cmds) |
561 | goto nla_put_failure; |
562 | |
563 | i = 0; |
564 | #define CMD(op, n) \ |
565 | do { \ |
566 | if (dev->ops->op) { \ |
567 | i++; \ |
568 | NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \ |
569 | } \ |
570 | } while (0) |
571 | |
572 | CMD(add_virtual_intf, NEW_INTERFACE); |
573 | CMD(change_virtual_intf, SET_INTERFACE); |
574 | CMD(add_key, NEW_KEY); |
575 | CMD(add_beacon, NEW_BEACON); |
576 | CMD(add_station, NEW_STATION); |
577 | CMD(add_mpath, NEW_MPATH); |
578 | CMD(set_mesh_params, SET_MESH_PARAMS); |
579 | CMD(change_bss, SET_BSS); |
580 | CMD(auth, AUTHENTICATE); |
581 | CMD(assoc, ASSOCIATE); |
582 | CMD(deauth, DEAUTHENTICATE); |
583 | CMD(disassoc, DISASSOCIATE); |
584 | CMD(join_ibss, JOIN_IBSS); |
585 | CMD(set_pmksa, SET_PMKSA); |
586 | CMD(del_pmksa, DEL_PMKSA); |
587 | CMD(flush_pmksa, FLUSH_PMKSA); |
588 | CMD(remain_on_channel, REMAIN_ON_CHANNEL); |
589 | CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); |
590 | CMD(action, ACTION); |
591 | if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { |
592 | i++; |
593 | NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS); |
594 | } |
595 | CMD(set_channel, SET_CHANNEL); |
596 | |
597 | #undef CMD |
598 | |
599 | if (dev->ops->connect || dev->ops->auth) { |
600 | i++; |
601 | NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT); |
602 | } |
603 | |
604 | if (dev->ops->disconnect || dev->ops->deauth) { |
605 | i++; |
606 | NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT); |
607 | } |
608 | |
609 | nla_nest_end(msg, nl_cmds); |
610 | |
611 | return genlmsg_end(msg, hdr); |
612 | |
613 | nla_put_failure: |
614 | genlmsg_cancel(msg, hdr); |
615 | return -EMSGSIZE; |
616 | } |
617 | |
618 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) |
619 | { |
620 | int idx = 0; |
621 | int start = cb->args[0]; |
622 | struct cfg80211_registered_device *dev; |
623 | |
624 | mutex_lock(&cfg80211_mutex); |
625 | list_for_each_entry(dev, &cfg80211_rdev_list, list) { |
626 | if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) |
627 | continue; |
628 | if (++idx <= start) |
629 | continue; |
630 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, |
631 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
632 | dev) < 0) { |
633 | idx--; |
634 | break; |
635 | } |
636 | } |
637 | mutex_unlock(&cfg80211_mutex); |
638 | |
639 | cb->args[0] = idx; |
640 | |
641 | return skb->len; |
642 | } |
643 | |
644 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) |
645 | { |
646 | struct sk_buff *msg; |
647 | struct cfg80211_registered_device *dev; |
648 | |
649 | dev = cfg80211_get_dev_from_info(info); |
650 | if (IS_ERR(dev)) |
651 | return PTR_ERR(dev); |
652 | |
653 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
654 | if (!msg) |
655 | goto out_err; |
656 | |
657 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) |
658 | goto out_free; |
659 | |
660 | cfg80211_unlock_rdev(dev); |
661 | |
662 | return genlmsg_reply(msg, info); |
663 | |
664 | out_free: |
665 | nlmsg_free(msg); |
666 | out_err: |
667 | cfg80211_unlock_rdev(dev); |
668 | return -ENOBUFS; |
669 | } |
670 | |
671 | static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { |
672 | [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, |
673 | [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, |
674 | [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, |
675 | [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, |
676 | [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, |
677 | }; |
678 | |
679 | static int parse_txq_params(struct nlattr *tb[], |
680 | struct ieee80211_txq_params *txq_params) |
681 | { |
682 | if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] || |
683 | !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || |
684 | !tb[NL80211_TXQ_ATTR_AIFS]) |
685 | return -EINVAL; |
686 | |
687 | txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]); |
688 | txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); |
689 | txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); |
690 | txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); |
691 | txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); |
692 | |
693 | return 0; |
694 | } |
695 | |
696 | static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) |
697 | { |
698 | /* |
699 | * You can only set the channel explicitly for AP, mesh |
700 | * and WDS type interfaces; all others have their channel |
701 | * managed via their respective "establish a connection" |
702 | * command (connect, join, ...) |
703 | * |
704 | * Monitors are special as they are normally slaved to |
705 | * whatever else is going on, so they behave as though |
706 | * you tried setting the wiphy channel itself. |
707 | */ |
708 | return !wdev || |
709 | wdev->iftype == NL80211_IFTYPE_AP || |
710 | wdev->iftype == NL80211_IFTYPE_WDS || |
711 | wdev->iftype == NL80211_IFTYPE_MESH_POINT || |
712 | wdev->iftype == NL80211_IFTYPE_MONITOR; |
713 | } |
714 | |
715 | static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, |
716 | struct wireless_dev *wdev, |
717 | struct genl_info *info) |
718 | { |
719 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
720 | u32 freq; |
721 | int result; |
722 | |
723 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
724 | return -EINVAL; |
725 | |
726 | if (!nl80211_can_set_dev_channel(wdev)) |
727 | return -EOPNOTSUPP; |
728 | |
729 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { |
730 | channel_type = nla_get_u32(info->attrs[ |
731 | NL80211_ATTR_WIPHY_CHANNEL_TYPE]); |
732 | if (channel_type != NL80211_CHAN_NO_HT && |
733 | channel_type != NL80211_CHAN_HT20 && |
734 | channel_type != NL80211_CHAN_HT40PLUS && |
735 | channel_type != NL80211_CHAN_HT40MINUS) |
736 | return -EINVAL; |
737 | } |
738 | |
739 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
740 | |
741 | mutex_lock(&rdev->devlist_mtx); |
742 | if (wdev) { |
743 | wdev_lock(wdev); |
744 | result = cfg80211_set_freq(rdev, wdev, freq, channel_type); |
745 | wdev_unlock(wdev); |
746 | } else { |
747 | result = cfg80211_set_freq(rdev, NULL, freq, channel_type); |
748 | } |
749 | mutex_unlock(&rdev->devlist_mtx); |
750 | |
751 | return result; |
752 | } |
753 | |
754 | static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) |
755 | { |
756 | struct cfg80211_registered_device *rdev; |
757 | struct net_device *netdev; |
758 | int result; |
759 | |
760 | rtnl_lock(); |
761 | |
762 | result = get_rdev_dev_by_info_ifindex(info, &rdev, &netdev); |
763 | if (result) |
764 | goto unlock; |
765 | |
766 | result = __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); |
767 | |
768 | unlock: |
769 | rtnl_unlock(); |
770 | |
771 | return result; |
772 | } |
773 | |
774 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) |
775 | { |
776 | struct cfg80211_registered_device *rdev; |
777 | struct net_device *netdev = NULL; |
778 | struct wireless_dev *wdev; |
779 | int result, rem_txq_params = 0; |
780 | struct nlattr *nl_txq_params; |
781 | u32 changed; |
782 | u8 retry_short = 0, retry_long = 0; |
783 | u32 frag_threshold = 0, rts_threshold = 0; |
784 | u8 coverage_class = 0; |
785 | |
786 | rtnl_lock(); |
787 | |
788 | /* |
789 | * Try to find the wiphy and netdev. Normally this |
790 | * function shouldn't need the netdev, but this is |
791 | * done for backward compatibility -- previously |
792 | * setting the channel was done per wiphy, but now |
793 | * it is per netdev. Previous userland like hostapd |
794 | * also passed a netdev to set_wiphy, so that it is |
795 | * possible to let that go to the right netdev! |
796 | */ |
797 | mutex_lock(&cfg80211_mutex); |
798 | |
799 | if (info->attrs[NL80211_ATTR_IFINDEX]) { |
800 | int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
801 | |
802 | netdev = dev_get_by_index(genl_info_net(info), ifindex); |
803 | if (netdev && netdev->ieee80211_ptr) { |
804 | rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); |
805 | mutex_lock(&rdev->mtx); |
806 | } else |
807 | netdev = NULL; |
808 | } |
809 | |
810 | if (!netdev) { |
811 | rdev = __cfg80211_rdev_from_info(info); |
812 | if (IS_ERR(rdev)) { |
813 | mutex_unlock(&cfg80211_mutex); |
814 | result = PTR_ERR(rdev); |
815 | goto unlock; |
816 | } |
817 | wdev = NULL; |
818 | netdev = NULL; |
819 | result = 0; |
820 | |
821 | mutex_lock(&rdev->mtx); |
822 | } else if (netif_running(netdev) && |
823 | nl80211_can_set_dev_channel(netdev->ieee80211_ptr)) |
824 | wdev = netdev->ieee80211_ptr; |
825 | else |
826 | wdev = NULL; |
827 | |
828 | /* |
829 | * end workaround code, by now the rdev is available |
830 | * and locked, and wdev may or may not be NULL. |
831 | */ |
832 | |
833 | if (info->attrs[NL80211_ATTR_WIPHY_NAME]) |
834 | result = cfg80211_dev_rename( |
835 | rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); |
836 | |
837 | mutex_unlock(&cfg80211_mutex); |
838 | |
839 | if (result) |
840 | goto bad_res; |
841 | |
842 | if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { |
843 | struct ieee80211_txq_params txq_params; |
844 | struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; |
845 | |
846 | if (!rdev->ops->set_txq_params) { |
847 | result = -EOPNOTSUPP; |
848 | goto bad_res; |
849 | } |
850 | |
851 | nla_for_each_nested(nl_txq_params, |
852 | info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], |
853 | rem_txq_params) { |
854 | nla_parse(tb, NL80211_TXQ_ATTR_MAX, |
855 | nla_data(nl_txq_params), |
856 | nla_len(nl_txq_params), |
857 | txq_params_policy); |
858 | result = parse_txq_params(tb, &txq_params); |
859 | if (result) |
860 | goto bad_res; |
861 | |
862 | result = rdev->ops->set_txq_params(&rdev->wiphy, |
863 | &txq_params); |
864 | if (result) |
865 | goto bad_res; |
866 | } |
867 | } |
868 | |
869 | if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
870 | result = __nl80211_set_channel(rdev, wdev, info); |
871 | if (result) |
872 | goto bad_res; |
873 | } |
874 | |
875 | if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { |
876 | enum nl80211_tx_power_setting type; |
877 | int idx, mbm = 0; |
878 | |
879 | if (!rdev->ops->set_tx_power) { |
880 | result = -EOPNOTSUPP; |
881 | goto bad_res; |
882 | } |
883 | |
884 | idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; |
885 | type = nla_get_u32(info->attrs[idx]); |
886 | |
887 | if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && |
888 | (type != NL80211_TX_POWER_AUTOMATIC)) { |
889 | result = -EINVAL; |
890 | goto bad_res; |
891 | } |
892 | |
893 | if (type != NL80211_TX_POWER_AUTOMATIC) { |
894 | idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; |
895 | mbm = nla_get_u32(info->attrs[idx]); |
896 | } |
897 | |
898 | result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm); |
899 | if (result) |
900 | goto bad_res; |
901 | } |
902 | |
903 | changed = 0; |
904 | |
905 | if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { |
906 | retry_short = nla_get_u8( |
907 | info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); |
908 | if (retry_short == 0) { |
909 | result = -EINVAL; |
910 | goto bad_res; |
911 | } |
912 | changed |= WIPHY_PARAM_RETRY_SHORT; |
913 | } |
914 | |
915 | if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { |
916 | retry_long = nla_get_u8( |
917 | info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); |
918 | if (retry_long == 0) { |
919 | result = -EINVAL; |
920 | goto bad_res; |
921 | } |
922 | changed |= WIPHY_PARAM_RETRY_LONG; |
923 | } |
924 | |
925 | if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { |
926 | frag_threshold = nla_get_u32( |
927 | info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); |
928 | if (frag_threshold < 256) { |
929 | result = -EINVAL; |
930 | goto bad_res; |
931 | } |
932 | if (frag_threshold != (u32) -1) { |
933 | /* |
934 | * Fragments (apart from the last one) are required to |
935 | * have even length. Make the fragmentation code |
936 | * simpler by stripping LSB should someone try to use |
937 | * odd threshold value. |
938 | */ |
939 | frag_threshold &= ~0x1; |
940 | } |
941 | changed |= WIPHY_PARAM_FRAG_THRESHOLD; |
942 | } |
943 | |
944 | if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { |
945 | rts_threshold = nla_get_u32( |
946 | info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); |
947 | changed |= WIPHY_PARAM_RTS_THRESHOLD; |
948 | } |
949 | |
950 | if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { |
951 | coverage_class = nla_get_u8( |
952 | info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); |
953 | changed |= WIPHY_PARAM_COVERAGE_CLASS; |
954 | } |
955 | |
956 | if (changed) { |
957 | u8 old_retry_short, old_retry_long; |
958 | u32 old_frag_threshold, old_rts_threshold; |
959 | u8 old_coverage_class; |
960 | |
961 | if (!rdev->ops->set_wiphy_params) { |
962 | result = -EOPNOTSUPP; |
963 | goto bad_res; |
964 | } |
965 | |
966 | old_retry_short = rdev->wiphy.retry_short; |
967 | old_retry_long = rdev->wiphy.retry_long; |
968 | old_frag_threshold = rdev->wiphy.frag_threshold; |
969 | old_rts_threshold = rdev->wiphy.rts_threshold; |
970 | old_coverage_class = rdev->wiphy.coverage_class; |
971 | |
972 | if (changed & WIPHY_PARAM_RETRY_SHORT) |
973 | rdev->wiphy.retry_short = retry_short; |
974 | if (changed & WIPHY_PARAM_RETRY_LONG) |
975 | rdev->wiphy.retry_long = retry_long; |
976 | if (changed & WIPHY_PARAM_FRAG_THRESHOLD) |
977 | rdev->wiphy.frag_threshold = frag_threshold; |
978 | if (changed & WIPHY_PARAM_RTS_THRESHOLD) |
979 | rdev->wiphy.rts_threshold = rts_threshold; |
980 | if (changed & WIPHY_PARAM_COVERAGE_CLASS) |
981 | rdev->wiphy.coverage_class = coverage_class; |
982 | |
983 | result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed); |
984 | if (result) { |
985 | rdev->wiphy.retry_short = old_retry_short; |
986 | rdev->wiphy.retry_long = old_retry_long; |
987 | rdev->wiphy.frag_threshold = old_frag_threshold; |
988 | rdev->wiphy.rts_threshold = old_rts_threshold; |
989 | rdev->wiphy.coverage_class = old_coverage_class; |
990 | } |
991 | } |
992 | |
993 | bad_res: |
994 | mutex_unlock(&rdev->mtx); |
995 | if (netdev) |
996 | dev_put(netdev); |
997 | unlock: |
998 | rtnl_unlock(); |
999 | return result; |
1000 | } |
1001 | |
1002 | |
1003 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
1004 | struct cfg80211_registered_device *rdev, |
1005 | struct net_device *dev) |
1006 | { |
1007 | void *hdr; |
1008 | |
1009 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); |
1010 | if (!hdr) |
1011 | return -1; |
1012 | |
1013 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
1014 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
1015 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); |
1016 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); |
1017 | |
1018 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, |
1019 | rdev->devlist_generation ^ |
1020 | (cfg80211_rdev_list_generation << 2)); |
1021 | |
1022 | return genlmsg_end(msg, hdr); |
1023 | |
1024 | nla_put_failure: |
1025 | genlmsg_cancel(msg, hdr); |
1026 | return -EMSGSIZE; |
1027 | } |
1028 | |
1029 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) |
1030 | { |
1031 | int wp_idx = 0; |
1032 | int if_idx = 0; |
1033 | int wp_start = cb->args[0]; |
1034 | int if_start = cb->args[1]; |
1035 | struct cfg80211_registered_device *rdev; |
1036 | struct wireless_dev *wdev; |
1037 | |
1038 | mutex_lock(&cfg80211_mutex); |
1039 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1040 | if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) |
1041 | continue; |
1042 | if (wp_idx < wp_start) { |
1043 | wp_idx++; |
1044 | continue; |
1045 | } |
1046 | if_idx = 0; |
1047 | |
1048 | mutex_lock(&rdev->devlist_mtx); |
1049 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
1050 | if (if_idx < if_start) { |
1051 | if_idx++; |
1052 | continue; |
1053 | } |
1054 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, |
1055 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
1056 | rdev, wdev->netdev) < 0) { |
1057 | mutex_unlock(&rdev->devlist_mtx); |
1058 | goto out; |
1059 | } |
1060 | if_idx++; |
1061 | } |
1062 | mutex_unlock(&rdev->devlist_mtx); |
1063 | |
1064 | wp_idx++; |
1065 | } |
1066 | out: |
1067 | mutex_unlock(&cfg80211_mutex); |
1068 | |
1069 | cb->args[0] = wp_idx; |
1070 | cb->args[1] = if_idx; |
1071 | |
1072 | return skb->len; |
1073 | } |
1074 | |
1075 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) |
1076 | { |
1077 | struct sk_buff *msg; |
1078 | struct cfg80211_registered_device *dev; |
1079 | struct net_device *netdev; |
1080 | int err; |
1081 | |
1082 | err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev); |
1083 | if (err) |
1084 | return err; |
1085 | |
1086 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1087 | if (!msg) |
1088 | goto out_err; |
1089 | |
1090 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, |
1091 | dev, netdev) < 0) |
1092 | goto out_free; |
1093 | |
1094 | dev_put(netdev); |
1095 | cfg80211_unlock_rdev(dev); |
1096 | |
1097 | return genlmsg_reply(msg, info); |
1098 | |
1099 | out_free: |
1100 | nlmsg_free(msg); |
1101 | out_err: |
1102 | dev_put(netdev); |
1103 | cfg80211_unlock_rdev(dev); |
1104 | return -ENOBUFS; |
1105 | } |
1106 | |
1107 | static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { |
1108 | [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, |
1109 | [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, |
1110 | [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, |
1111 | [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, |
1112 | [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, |
1113 | }; |
1114 | |
1115 | static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) |
1116 | { |
1117 | struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; |
1118 | int flag; |
1119 | |
1120 | *mntrflags = 0; |
1121 | |
1122 | if (!nla) |
1123 | return -EINVAL; |
1124 | |
1125 | if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, |
1126 | nla, mntr_flags_policy)) |
1127 | return -EINVAL; |
1128 | |
1129 | for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) |
1130 | if (flags[flag]) |
1131 | *mntrflags |= (1<<flag); |
1132 | |
1133 | return 0; |
1134 | } |
1135 | |
1136 | static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, |
1137 | struct net_device *netdev, u8 use_4addr, |
1138 | enum nl80211_iftype iftype) |
1139 | { |
1140 | if (!use_4addr) { |
1141 | if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) |
1142 | return -EBUSY; |
1143 | return 0; |
1144 | } |
1145 | |
1146 | switch (iftype) { |
1147 | case NL80211_IFTYPE_AP_VLAN: |
1148 | if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) |
1149 | return 0; |
1150 | break; |
1151 | case NL80211_IFTYPE_STATION: |
1152 | if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) |
1153 | return 0; |
1154 | break; |
1155 | default: |
1156 | break; |
1157 | } |
1158 | |
1159 | return -EOPNOTSUPP; |
1160 | } |
1161 | |
1162 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
1163 | { |
1164 | struct cfg80211_registered_device *rdev; |
1165 | struct vif_params params; |
1166 | int err; |
1167 | enum nl80211_iftype otype, ntype; |
1168 | struct net_device *dev; |
1169 | u32 _flags, *flags = NULL; |
1170 | bool change = false; |
1171 | |
1172 | memset(¶ms, 0, sizeof(params)); |
1173 | |
1174 | rtnl_lock(); |
1175 | |
1176 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1177 | if (err) |
1178 | goto unlock_rtnl; |
1179 | |
1180 | otype = ntype = dev->ieee80211_ptr->iftype; |
1181 | |
1182 | if (info->attrs[NL80211_ATTR_IFTYPE]) { |
1183 | ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); |
1184 | if (otype != ntype) |
1185 | change = true; |
1186 | if (ntype > NL80211_IFTYPE_MAX) { |
1187 | err = -EINVAL; |
1188 | goto unlock; |
1189 | } |
1190 | } |
1191 | |
1192 | if (info->attrs[NL80211_ATTR_MESH_ID]) { |
1193 | if (ntype != NL80211_IFTYPE_MESH_POINT) { |
1194 | err = -EINVAL; |
1195 | goto unlock; |
1196 | } |
1197 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
1198 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
1199 | change = true; |
1200 | } |
1201 | |
1202 | if (info->attrs[NL80211_ATTR_4ADDR]) { |
1203 | params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); |
1204 | change = true; |
1205 | err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); |
1206 | if (err) |
1207 | goto unlock; |
1208 | } else { |
1209 | params.use_4addr = -1; |
1210 | } |
1211 | |
1212 | if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { |
1213 | if (ntype != NL80211_IFTYPE_MONITOR) { |
1214 | err = -EINVAL; |
1215 | goto unlock; |
1216 | } |
1217 | err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], |
1218 | &_flags); |
1219 | if (err) |
1220 | goto unlock; |
1221 | |
1222 | flags = &_flags; |
1223 | change = true; |
1224 | } |
1225 | |
1226 | if (change) |
1227 | err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); |
1228 | else |
1229 | err = 0; |
1230 | |
1231 | if (!err && params.use_4addr != -1) |
1232 | dev->ieee80211_ptr->use_4addr = params.use_4addr; |
1233 | |
1234 | unlock: |
1235 | dev_put(dev); |
1236 | cfg80211_unlock_rdev(rdev); |
1237 | unlock_rtnl: |
1238 | rtnl_unlock(); |
1239 | return err; |
1240 | } |
1241 | |
1242 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) |
1243 | { |
1244 | struct cfg80211_registered_device *rdev; |
1245 | struct vif_params params; |
1246 | int err; |
1247 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; |
1248 | u32 flags; |
1249 | |
1250 | memset(¶ms, 0, sizeof(params)); |
1251 | |
1252 | if (!info->attrs[NL80211_ATTR_IFNAME]) |
1253 | return -EINVAL; |
1254 | |
1255 | if (info->attrs[NL80211_ATTR_IFTYPE]) { |
1256 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); |
1257 | if (type > NL80211_IFTYPE_MAX) |
1258 | return -EINVAL; |
1259 | } |
1260 | |
1261 | rtnl_lock(); |
1262 | |
1263 | rdev = cfg80211_get_dev_from_info(info); |
1264 | if (IS_ERR(rdev)) { |
1265 | err = PTR_ERR(rdev); |
1266 | goto unlock_rtnl; |
1267 | } |
1268 | |
1269 | if (!rdev->ops->add_virtual_intf || |
1270 | !(rdev->wiphy.interface_modes & (1 << type))) { |
1271 | err = -EOPNOTSUPP; |
1272 | goto unlock; |
1273 | } |
1274 | |
1275 | if (type == NL80211_IFTYPE_MESH_POINT && |
1276 | info->attrs[NL80211_ATTR_MESH_ID]) { |
1277 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
1278 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
1279 | } |
1280 | |
1281 | if (info->attrs[NL80211_ATTR_4ADDR]) { |
1282 | params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); |
1283 | err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); |
1284 | if (err) |
1285 | goto unlock; |
1286 | } |
1287 | |
1288 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
1289 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, |
1290 | &flags); |
1291 | err = rdev->ops->add_virtual_intf(&rdev->wiphy, |
1292 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
1293 | type, err ? NULL : &flags, ¶ms); |
1294 | |
1295 | unlock: |
1296 | cfg80211_unlock_rdev(rdev); |
1297 | unlock_rtnl: |
1298 | rtnl_unlock(); |
1299 | return err; |
1300 | } |
1301 | |
1302 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) |
1303 | { |
1304 | struct cfg80211_registered_device *rdev; |
1305 | int err; |
1306 | struct net_device *dev; |
1307 | |
1308 | rtnl_lock(); |
1309 | |
1310 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1311 | if (err) |
1312 | goto unlock_rtnl; |
1313 | |
1314 | if (!rdev->ops->del_virtual_intf) { |
1315 | err = -EOPNOTSUPP; |
1316 | goto out; |
1317 | } |
1318 | |
1319 | err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev); |
1320 | |
1321 | out: |
1322 | cfg80211_unlock_rdev(rdev); |
1323 | dev_put(dev); |
1324 | unlock_rtnl: |
1325 | rtnl_unlock(); |
1326 | return err; |
1327 | } |
1328 | |
1329 | struct get_key_cookie { |
1330 | struct sk_buff *msg; |
1331 | int error; |
1332 | int idx; |
1333 | }; |
1334 | |
1335 | static void get_key_callback(void *c, struct key_params *params) |
1336 | { |
1337 | struct nlattr *key; |
1338 | struct get_key_cookie *cookie = c; |
1339 | |
1340 | if (params->key) |
1341 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, |
1342 | params->key_len, params->key); |
1343 | |
1344 | if (params->seq) |
1345 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, |
1346 | params->seq_len, params->seq); |
1347 | |
1348 | if (params->cipher) |
1349 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, |
1350 | params->cipher); |
1351 | |
1352 | key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); |
1353 | if (!key) |
1354 | goto nla_put_failure; |
1355 | |
1356 | if (params->key) |
1357 | NLA_PUT(cookie->msg, NL80211_KEY_DATA, |
1358 | params->key_len, params->key); |
1359 | |
1360 | if (params->seq) |
1361 | NLA_PUT(cookie->msg, NL80211_KEY_SEQ, |
1362 | params->seq_len, params->seq); |
1363 | |
1364 | if (params->cipher) |
1365 | NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER, |
1366 | params->cipher); |
1367 | |
1368 | NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx); |
1369 | |
1370 | nla_nest_end(cookie->msg, key); |
1371 | |
1372 | return; |
1373 | nla_put_failure: |
1374 | cookie->error = 1; |
1375 | } |
1376 | |
1377 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) |
1378 | { |
1379 | struct cfg80211_registered_device *rdev; |
1380 | int err; |
1381 | struct net_device *dev; |
1382 | u8 key_idx = 0; |
1383 | u8 *mac_addr = NULL; |
1384 | struct get_key_cookie cookie = { |
1385 | .error = 0, |
1386 | }; |
1387 | void *hdr; |
1388 | struct sk_buff *msg; |
1389 | |
1390 | if (info->attrs[NL80211_ATTR_KEY_IDX]) |
1391 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
1392 | |
1393 | if (key_idx > 5) |
1394 | return -EINVAL; |
1395 | |
1396 | if (info->attrs[NL80211_ATTR_MAC]) |
1397 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
1398 | |
1399 | rtnl_lock(); |
1400 | |
1401 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1402 | if (err) |
1403 | goto unlock_rtnl; |
1404 | |
1405 | if (!rdev->ops->get_key) { |
1406 | err = -EOPNOTSUPP; |
1407 | goto out; |
1408 | } |
1409 | |
1410 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1411 | if (!msg) { |
1412 | err = -ENOMEM; |
1413 | goto out; |
1414 | } |
1415 | |
1416 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
1417 | NL80211_CMD_NEW_KEY); |
1418 | |
1419 | if (IS_ERR(hdr)) { |
1420 | err = PTR_ERR(hdr); |
1421 | goto free_msg; |
1422 | } |
1423 | |
1424 | cookie.msg = msg; |
1425 | cookie.idx = key_idx; |
1426 | |
1427 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
1428 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); |
1429 | if (mac_addr) |
1430 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
1431 | |
1432 | err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, mac_addr, |
1433 | &cookie, get_key_callback); |
1434 | |
1435 | if (err) |
1436 | goto free_msg; |
1437 | |
1438 | if (cookie.error) |
1439 | goto nla_put_failure; |
1440 | |
1441 | genlmsg_end(msg, hdr); |
1442 | err = genlmsg_reply(msg, info); |
1443 | goto out; |
1444 | |
1445 | nla_put_failure: |
1446 | err = -ENOBUFS; |
1447 | free_msg: |
1448 | nlmsg_free(msg); |
1449 | out: |
1450 | cfg80211_unlock_rdev(rdev); |
1451 | dev_put(dev); |
1452 | unlock_rtnl: |
1453 | rtnl_unlock(); |
1454 | |
1455 | return err; |
1456 | } |
1457 | |
1458 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) |
1459 | { |
1460 | struct cfg80211_registered_device *rdev; |
1461 | struct key_parse key; |
1462 | int err; |
1463 | struct net_device *dev; |
1464 | int (*func)(struct wiphy *wiphy, struct net_device *netdev, |
1465 | u8 key_index); |
1466 | |
1467 | err = nl80211_parse_key(info, &key); |
1468 | if (err) |
1469 | return err; |
1470 | |
1471 | if (key.idx < 0) |
1472 | return -EINVAL; |
1473 | |
1474 | /* only support setting default key */ |
1475 | if (!key.def && !key.defmgmt) |
1476 | return -EINVAL; |
1477 | |
1478 | rtnl_lock(); |
1479 | |
1480 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1481 | if (err) |
1482 | goto unlock_rtnl; |
1483 | |
1484 | if (key.def) |
1485 | func = rdev->ops->set_default_key; |
1486 | else |
1487 | func = rdev->ops->set_default_mgmt_key; |
1488 | |
1489 | if (!func) { |
1490 | err = -EOPNOTSUPP; |
1491 | goto out; |
1492 | } |
1493 | |
1494 | wdev_lock(dev->ieee80211_ptr); |
1495 | err = nl80211_key_allowed(dev->ieee80211_ptr); |
1496 | if (!err) |
1497 | err = func(&rdev->wiphy, dev, key.idx); |
1498 | |
1499 | #ifdef CONFIG_CFG80211_WEXT |
1500 | if (!err) { |
1501 | if (func == rdev->ops->set_default_key) |
1502 | dev->ieee80211_ptr->wext.default_key = key.idx; |
1503 | else |
1504 | dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; |
1505 | } |
1506 | #endif |
1507 | wdev_unlock(dev->ieee80211_ptr); |
1508 | |
1509 | out: |
1510 | cfg80211_unlock_rdev(rdev); |
1511 | dev_put(dev); |
1512 | |
1513 | unlock_rtnl: |
1514 | rtnl_unlock(); |
1515 | |
1516 | return err; |
1517 | } |
1518 | |
1519 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) |
1520 | { |
1521 | struct cfg80211_registered_device *rdev; |
1522 | int err; |
1523 | struct net_device *dev; |
1524 | struct key_parse key; |
1525 | u8 *mac_addr = NULL; |
1526 | |
1527 | err = nl80211_parse_key(info, &key); |
1528 | if (err) |
1529 | return err; |
1530 | |
1531 | if (!key.p.key) |
1532 | return -EINVAL; |
1533 | |
1534 | if (info->attrs[NL80211_ATTR_MAC]) |
1535 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
1536 | |
1537 | rtnl_lock(); |
1538 | |
1539 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1540 | if (err) |
1541 | goto unlock_rtnl; |
1542 | |
1543 | if (!rdev->ops->add_key) { |
1544 | err = -EOPNOTSUPP; |
1545 | goto out; |
1546 | } |
1547 | |
1548 | if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) { |
1549 | err = -EINVAL; |
1550 | goto out; |
1551 | } |
1552 | |
1553 | wdev_lock(dev->ieee80211_ptr); |
1554 | err = nl80211_key_allowed(dev->ieee80211_ptr); |
1555 | if (!err) |
1556 | err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx, |
1557 | mac_addr, &key.p); |
1558 | wdev_unlock(dev->ieee80211_ptr); |
1559 | |
1560 | out: |
1561 | cfg80211_unlock_rdev(rdev); |
1562 | dev_put(dev); |
1563 | unlock_rtnl: |
1564 | rtnl_unlock(); |
1565 | |
1566 | return err; |
1567 | } |
1568 | |
1569 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) |
1570 | { |
1571 | struct cfg80211_registered_device *rdev; |
1572 | int err; |
1573 | struct net_device *dev; |
1574 | u8 *mac_addr = NULL; |
1575 | struct key_parse key; |
1576 | |
1577 | err = nl80211_parse_key(info, &key); |
1578 | if (err) |
1579 | return err; |
1580 | |
1581 | if (info->attrs[NL80211_ATTR_MAC]) |
1582 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
1583 | |
1584 | rtnl_lock(); |
1585 | |
1586 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1587 | if (err) |
1588 | goto unlock_rtnl; |
1589 | |
1590 | if (!rdev->ops->del_key) { |
1591 | err = -EOPNOTSUPP; |
1592 | goto out; |
1593 | } |
1594 | |
1595 | wdev_lock(dev->ieee80211_ptr); |
1596 | err = nl80211_key_allowed(dev->ieee80211_ptr); |
1597 | if (!err) |
1598 | err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, mac_addr); |
1599 | |
1600 | #ifdef CONFIG_CFG80211_WEXT |
1601 | if (!err) { |
1602 | if (key.idx == dev->ieee80211_ptr->wext.default_key) |
1603 | dev->ieee80211_ptr->wext.default_key = -1; |
1604 | else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) |
1605 | dev->ieee80211_ptr->wext.default_mgmt_key = -1; |
1606 | } |
1607 | #endif |
1608 | wdev_unlock(dev->ieee80211_ptr); |
1609 | |
1610 | out: |
1611 | cfg80211_unlock_rdev(rdev); |
1612 | dev_put(dev); |
1613 | |
1614 | unlock_rtnl: |
1615 | rtnl_unlock(); |
1616 | |
1617 | return err; |
1618 | } |
1619 | |
1620 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
1621 | { |
1622 | int (*call)(struct wiphy *wiphy, struct net_device *dev, |
1623 | struct beacon_parameters *info); |
1624 | struct cfg80211_registered_device *rdev; |
1625 | int err; |
1626 | struct net_device *dev; |
1627 | struct beacon_parameters params; |
1628 | int haveinfo = 0; |
1629 | |
1630 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL])) |
1631 | return -EINVAL; |
1632 | |
1633 | rtnl_lock(); |
1634 | |
1635 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1636 | if (err) |
1637 | goto unlock_rtnl; |
1638 | |
1639 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { |
1640 | err = -EOPNOTSUPP; |
1641 | goto out; |
1642 | } |
1643 | |
1644 | switch (info->genlhdr->cmd) { |
1645 | case NL80211_CMD_NEW_BEACON: |
1646 | /* these are required for NEW_BEACON */ |
1647 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || |
1648 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || |
1649 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { |
1650 | err = -EINVAL; |
1651 | goto out; |
1652 | } |
1653 | |
1654 | call = rdev->ops->add_beacon; |
1655 | break; |
1656 | case NL80211_CMD_SET_BEACON: |
1657 | call = rdev->ops->set_beacon; |
1658 | break; |
1659 | default: |
1660 | WARN_ON(1); |
1661 | err = -EOPNOTSUPP; |
1662 | goto out; |
1663 | } |
1664 | |
1665 | if (!call) { |
1666 | err = -EOPNOTSUPP; |
1667 | goto out; |
1668 | } |
1669 | |
1670 | memset(¶ms, 0, sizeof(params)); |
1671 | |
1672 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { |
1673 | params.interval = |
1674 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); |
1675 | haveinfo = 1; |
1676 | } |
1677 | |
1678 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { |
1679 | params.dtim_period = |
1680 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); |
1681 | haveinfo = 1; |
1682 | } |
1683 | |
1684 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { |
1685 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); |
1686 | params.head_len = |
1687 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); |
1688 | haveinfo = 1; |
1689 | } |
1690 | |
1691 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { |
1692 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); |
1693 | params.tail_len = |
1694 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); |
1695 | haveinfo = 1; |
1696 | } |
1697 | |
1698 | if (!haveinfo) { |
1699 | err = -EINVAL; |
1700 | goto out; |
1701 | } |
1702 | |
1703 | err = call(&rdev->wiphy, dev, ¶ms); |
1704 | |
1705 | out: |
1706 | cfg80211_unlock_rdev(rdev); |
1707 | dev_put(dev); |
1708 | unlock_rtnl: |
1709 | rtnl_unlock(); |
1710 | |
1711 | return err; |
1712 | } |
1713 | |
1714 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) |
1715 | { |
1716 | struct cfg80211_registered_device *rdev; |
1717 | int err; |
1718 | struct net_device *dev; |
1719 | |
1720 | rtnl_lock(); |
1721 | |
1722 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1723 | if (err) |
1724 | goto unlock_rtnl; |
1725 | |
1726 | if (!rdev->ops->del_beacon) { |
1727 | err = -EOPNOTSUPP; |
1728 | goto out; |
1729 | } |
1730 | |
1731 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { |
1732 | err = -EOPNOTSUPP; |
1733 | goto out; |
1734 | } |
1735 | err = rdev->ops->del_beacon(&rdev->wiphy, dev); |
1736 | |
1737 | out: |
1738 | cfg80211_unlock_rdev(rdev); |
1739 | dev_put(dev); |
1740 | unlock_rtnl: |
1741 | rtnl_unlock(); |
1742 | |
1743 | return err; |
1744 | } |
1745 | |
1746 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
1747 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, |
1748 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, |
1749 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, |
1750 | [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, |
1751 | }; |
1752 | |
1753 | static int parse_station_flags(struct genl_info *info, |
1754 | struct station_parameters *params) |
1755 | { |
1756 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; |
1757 | struct nlattr *nla; |
1758 | int flag; |
1759 | |
1760 | /* |
1761 | * Try parsing the new attribute first so userspace |
1762 | * can specify both for older kernels. |
1763 | */ |
1764 | nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; |
1765 | if (nla) { |
1766 | struct nl80211_sta_flag_update *sta_flags; |
1767 | |
1768 | sta_flags = nla_data(nla); |
1769 | params->sta_flags_mask = sta_flags->mask; |
1770 | params->sta_flags_set = sta_flags->set; |
1771 | if ((params->sta_flags_mask | |
1772 | params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) |
1773 | return -EINVAL; |
1774 | return 0; |
1775 | } |
1776 | |
1777 | /* if present, parse the old attribute */ |
1778 | |
1779 | nla = info->attrs[NL80211_ATTR_STA_FLAGS]; |
1780 | if (!nla) |
1781 | return 0; |
1782 | |
1783 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, |
1784 | nla, sta_flags_policy)) |
1785 | return -EINVAL; |
1786 | |
1787 | params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1; |
1788 | params->sta_flags_mask &= ~1; |
1789 | |
1790 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) |
1791 | if (flags[flag]) |
1792 | params->sta_flags_set |= (1<<flag); |
1793 | |
1794 | return 0; |
1795 | } |
1796 | |
1797 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
1798 | int flags, struct net_device *dev, |
1799 | const u8 *mac_addr, struct station_info *sinfo) |
1800 | { |
1801 | void *hdr; |
1802 | struct nlattr *sinfoattr, *txrate; |
1803 | u16 bitrate; |
1804 | |
1805 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); |
1806 | if (!hdr) |
1807 | return -1; |
1808 | |
1809 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
1810 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
1811 | |
1812 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation); |
1813 | |
1814 | sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); |
1815 | if (!sinfoattr) |
1816 | goto nla_put_failure; |
1817 | if (sinfo->filled & STATION_INFO_INACTIVE_TIME) |
1818 | NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, |
1819 | sinfo->inactive_time); |
1820 | if (sinfo->filled & STATION_INFO_RX_BYTES) |
1821 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, |
1822 | sinfo->rx_bytes); |
1823 | if (sinfo->filled & STATION_INFO_TX_BYTES) |
1824 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, |
1825 | sinfo->tx_bytes); |
1826 | if (sinfo->filled & STATION_INFO_LLID) |
1827 | NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, |
1828 | sinfo->llid); |
1829 | if (sinfo->filled & STATION_INFO_PLID) |
1830 | NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, |
1831 | sinfo->plid); |
1832 | if (sinfo->filled & STATION_INFO_PLINK_STATE) |
1833 | NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, |
1834 | sinfo->plink_state); |
1835 | if (sinfo->filled & STATION_INFO_SIGNAL) |
1836 | NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL, |
1837 | sinfo->signal); |
1838 | if (sinfo->filled & STATION_INFO_TX_BITRATE) { |
1839 | txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE); |
1840 | if (!txrate) |
1841 | goto nla_put_failure; |
1842 | |
1843 | /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ |
1844 | bitrate = cfg80211_calculate_bitrate(&sinfo->txrate); |
1845 | if (bitrate > 0) |
1846 | NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); |
1847 | |
1848 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS) |
1849 | NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, |
1850 | sinfo->txrate.mcs); |
1851 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) |
1852 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); |
1853 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI) |
1854 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); |
1855 | |
1856 | nla_nest_end(msg, txrate); |
1857 | } |
1858 | if (sinfo->filled & STATION_INFO_RX_PACKETS) |
1859 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, |
1860 | sinfo->rx_packets); |
1861 | if (sinfo->filled & STATION_INFO_TX_PACKETS) |
1862 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, |
1863 | sinfo->tx_packets); |
1864 | nla_nest_end(msg, sinfoattr); |
1865 | |
1866 | return genlmsg_end(msg, hdr); |
1867 | |
1868 | nla_put_failure: |
1869 | genlmsg_cancel(msg, hdr); |
1870 | return -EMSGSIZE; |
1871 | } |
1872 | |
1873 | static int nl80211_dump_station(struct sk_buff *skb, |
1874 | struct netlink_callback *cb) |
1875 | { |
1876 | struct station_info sinfo; |
1877 | struct cfg80211_registered_device *dev; |
1878 | struct net_device *netdev; |
1879 | u8 mac_addr[ETH_ALEN]; |
1880 | int ifidx = cb->args[0]; |
1881 | int sta_idx = cb->args[1]; |
1882 | int err; |
1883 | |
1884 | if (!ifidx) |
1885 | ifidx = nl80211_get_ifidx(cb); |
1886 | if (ifidx < 0) |
1887 | return ifidx; |
1888 | |
1889 | rtnl_lock(); |
1890 | |
1891 | netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); |
1892 | if (!netdev) { |
1893 | err = -ENODEV; |
1894 | goto out_rtnl; |
1895 | } |
1896 | |
1897 | dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); |
1898 | if (IS_ERR(dev)) { |
1899 | err = PTR_ERR(dev); |
1900 | goto out_rtnl; |
1901 | } |
1902 | |
1903 | if (!dev->ops->dump_station) { |
1904 | err = -EOPNOTSUPP; |
1905 | goto out_err; |
1906 | } |
1907 | |
1908 | while (1) { |
1909 | err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, |
1910 | mac_addr, &sinfo); |
1911 | if (err == -ENOENT) |
1912 | break; |
1913 | if (err) |
1914 | goto out_err; |
1915 | |
1916 | if (nl80211_send_station(skb, |
1917 | NETLINK_CB(cb->skb).pid, |
1918 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
1919 | netdev, mac_addr, |
1920 | &sinfo) < 0) |
1921 | goto out; |
1922 | |
1923 | sta_idx++; |
1924 | } |
1925 | |
1926 | |
1927 | out: |
1928 | cb->args[1] = sta_idx; |
1929 | err = skb->len; |
1930 | out_err: |
1931 | cfg80211_unlock_rdev(dev); |
1932 | out_rtnl: |
1933 | rtnl_unlock(); |
1934 | |
1935 | return err; |
1936 | } |
1937 | |
1938 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
1939 | { |
1940 | struct cfg80211_registered_device *rdev; |
1941 | int err; |
1942 | struct net_device *dev; |
1943 | struct station_info sinfo; |
1944 | struct sk_buff *msg; |
1945 | u8 *mac_addr = NULL; |
1946 | |
1947 | memset(&sinfo, 0, sizeof(sinfo)); |
1948 | |
1949 | if (!info->attrs[NL80211_ATTR_MAC]) |
1950 | return -EINVAL; |
1951 | |
1952 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
1953 | |
1954 | rtnl_lock(); |
1955 | |
1956 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
1957 | if (err) |
1958 | goto out_rtnl; |
1959 | |
1960 | if (!rdev->ops->get_station) { |
1961 | err = -EOPNOTSUPP; |
1962 | goto out; |
1963 | } |
1964 | |
1965 | err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo); |
1966 | if (err) |
1967 | goto out; |
1968 | |
1969 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1970 | if (!msg) |
1971 | goto out; |
1972 | |
1973 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, |
1974 | dev, mac_addr, &sinfo) < 0) |
1975 | goto out_free; |
1976 | |
1977 | err = genlmsg_reply(msg, info); |
1978 | goto out; |
1979 | |
1980 | out_free: |
1981 | nlmsg_free(msg); |
1982 | out: |
1983 | cfg80211_unlock_rdev(rdev); |
1984 | dev_put(dev); |
1985 | out_rtnl: |
1986 | rtnl_unlock(); |
1987 | |
1988 | return err; |
1989 | } |
1990 | |
1991 | /* |
1992 | * Get vlan interface making sure it is running and on the right wiphy. |
1993 | */ |
1994 | static int get_vlan(struct genl_info *info, |
1995 | struct cfg80211_registered_device *rdev, |
1996 | struct net_device **vlan) |
1997 | { |
1998 | struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; |
1999 | *vlan = NULL; |
2000 | |
2001 | if (vlanattr) { |
2002 | *vlan = dev_get_by_index(genl_info_net(info), |
2003 | nla_get_u32(vlanattr)); |
2004 | if (!*vlan) |
2005 | return -ENODEV; |
2006 | if (!(*vlan)->ieee80211_ptr) |
2007 | return -EINVAL; |
2008 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) |
2009 | return -EINVAL; |
2010 | if (!netif_running(*vlan)) |
2011 | return -ENETDOWN; |
2012 | } |
2013 | return 0; |
2014 | } |
2015 | |
2016 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) |
2017 | { |
2018 | struct cfg80211_registered_device *rdev; |
2019 | int err; |
2020 | struct net_device *dev; |
2021 | struct station_parameters params; |
2022 | u8 *mac_addr = NULL; |
2023 | |
2024 | memset(¶ms, 0, sizeof(params)); |
2025 | |
2026 | params.listen_interval = -1; |
2027 | |
2028 | if (info->attrs[NL80211_ATTR_STA_AID]) |
2029 | return -EINVAL; |
2030 | |
2031 | if (!info->attrs[NL80211_ATTR_MAC]) |
2032 | return -EINVAL; |
2033 | |
2034 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2035 | |
2036 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { |
2037 | params.supported_rates = |
2038 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
2039 | params.supported_rates_len = |
2040 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
2041 | } |
2042 | |
2043 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) |
2044 | params.listen_interval = |
2045 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); |
2046 | |
2047 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
2048 | params.ht_capa = |
2049 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); |
2050 | |
2051 | if (parse_station_flags(info, ¶ms)) |
2052 | return -EINVAL; |
2053 | |
2054 | if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) |
2055 | params.plink_action = |
2056 | nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); |
2057 | |
2058 | rtnl_lock(); |
2059 | |
2060 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2061 | if (err) |
2062 | goto out_rtnl; |
2063 | |
2064 | err = get_vlan(info, rdev, ¶ms.vlan); |
2065 | if (err) |
2066 | goto out; |
2067 | |
2068 | /* validate settings */ |
2069 | err = 0; |
2070 | |
2071 | switch (dev->ieee80211_ptr->iftype) { |
2072 | case NL80211_IFTYPE_AP: |
2073 | case NL80211_IFTYPE_AP_VLAN: |
2074 | /* disallow mesh-specific things */ |
2075 | if (params.plink_action) |
2076 | err = -EINVAL; |
2077 | break; |
2078 | case NL80211_IFTYPE_STATION: |
2079 | /* disallow everything but AUTHORIZED flag */ |
2080 | if (params.plink_action) |
2081 | err = -EINVAL; |
2082 | if (params.vlan) |
2083 | err = -EINVAL; |
2084 | if (params.supported_rates) |
2085 | err = -EINVAL; |
2086 | if (params.ht_capa) |
2087 | err = -EINVAL; |
2088 | if (params.listen_interval >= 0) |
2089 | err = -EINVAL; |
2090 | if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) |
2091 | err = -EINVAL; |
2092 | break; |
2093 | case NL80211_IFTYPE_MESH_POINT: |
2094 | /* disallow things mesh doesn't support */ |
2095 | if (params.vlan) |
2096 | err = -EINVAL; |
2097 | if (params.ht_capa) |
2098 | err = -EINVAL; |
2099 | if (params.listen_interval >= 0) |
2100 | err = -EINVAL; |
2101 | if (params.supported_rates) |
2102 | err = -EINVAL; |
2103 | if (params.sta_flags_mask) |
2104 | err = -EINVAL; |
2105 | break; |
2106 | default: |
2107 | err = -EINVAL; |
2108 | } |
2109 | |
2110 | if (err) |
2111 | goto out; |
2112 | |
2113 | if (!rdev->ops->change_station) { |
2114 | err = -EOPNOTSUPP; |
2115 | goto out; |
2116 | } |
2117 | |
2118 | err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms); |
2119 | |
2120 | out: |
2121 | if (params.vlan) |
2122 | dev_put(params.vlan); |
2123 | cfg80211_unlock_rdev(rdev); |
2124 | dev_put(dev); |
2125 | out_rtnl: |
2126 | rtnl_unlock(); |
2127 | |
2128 | return err; |
2129 | } |
2130 | |
2131 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) |
2132 | { |
2133 | struct cfg80211_registered_device *rdev; |
2134 | int err; |
2135 | struct net_device *dev; |
2136 | struct station_parameters params; |
2137 | u8 *mac_addr = NULL; |
2138 | |
2139 | memset(¶ms, 0, sizeof(params)); |
2140 | |
2141 | if (!info->attrs[NL80211_ATTR_MAC]) |
2142 | return -EINVAL; |
2143 | |
2144 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) |
2145 | return -EINVAL; |
2146 | |
2147 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) |
2148 | return -EINVAL; |
2149 | |
2150 | if (!info->attrs[NL80211_ATTR_STA_AID]) |
2151 | return -EINVAL; |
2152 | |
2153 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2154 | params.supported_rates = |
2155 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
2156 | params.supported_rates_len = |
2157 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
2158 | params.listen_interval = |
2159 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); |
2160 | |
2161 | params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); |
2162 | if (!params.aid || params.aid > IEEE80211_MAX_AID) |
2163 | return -EINVAL; |
2164 | |
2165 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
2166 | params.ht_capa = |
2167 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); |
2168 | |
2169 | if (parse_station_flags(info, ¶ms)) |
2170 | return -EINVAL; |
2171 | |
2172 | rtnl_lock(); |
2173 | |
2174 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2175 | if (err) |
2176 | goto out_rtnl; |
2177 | |
2178 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
2179 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) { |
2180 | err = -EINVAL; |
2181 | goto out; |
2182 | } |
2183 | |
2184 | err = get_vlan(info, rdev, ¶ms.vlan); |
2185 | if (err) |
2186 | goto out; |
2187 | |
2188 | /* validate settings */ |
2189 | err = 0; |
2190 | |
2191 | if (!rdev->ops->add_station) { |
2192 | err = -EOPNOTSUPP; |
2193 | goto out; |
2194 | } |
2195 | |
2196 | if (!netif_running(dev)) { |
2197 | err = -ENETDOWN; |
2198 | goto out; |
2199 | } |
2200 | |
2201 | err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms); |
2202 | |
2203 | out: |
2204 | if (params.vlan) |
2205 | dev_put(params.vlan); |
2206 | cfg80211_unlock_rdev(rdev); |
2207 | dev_put(dev); |
2208 | out_rtnl: |
2209 | rtnl_unlock(); |
2210 | |
2211 | return err; |
2212 | } |
2213 | |
2214 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) |
2215 | { |
2216 | struct cfg80211_registered_device *rdev; |
2217 | int err; |
2218 | struct net_device *dev; |
2219 | u8 *mac_addr = NULL; |
2220 | |
2221 | if (info->attrs[NL80211_ATTR_MAC]) |
2222 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2223 | |
2224 | rtnl_lock(); |
2225 | |
2226 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2227 | if (err) |
2228 | goto out_rtnl; |
2229 | |
2230 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
2231 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
2232 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
2233 | err = -EINVAL; |
2234 | goto out; |
2235 | } |
2236 | |
2237 | if (!rdev->ops->del_station) { |
2238 | err = -EOPNOTSUPP; |
2239 | goto out; |
2240 | } |
2241 | |
2242 | err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr); |
2243 | |
2244 | out: |
2245 | cfg80211_unlock_rdev(rdev); |
2246 | dev_put(dev); |
2247 | out_rtnl: |
2248 | rtnl_unlock(); |
2249 | |
2250 | return err; |
2251 | } |
2252 | |
2253 | static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, |
2254 | int flags, struct net_device *dev, |
2255 | u8 *dst, u8 *next_hop, |
2256 | struct mpath_info *pinfo) |
2257 | { |
2258 | void *hdr; |
2259 | struct nlattr *pinfoattr; |
2260 | |
2261 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); |
2262 | if (!hdr) |
2263 | return -1; |
2264 | |
2265 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
2266 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); |
2267 | NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); |
2268 | |
2269 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation); |
2270 | |
2271 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); |
2272 | if (!pinfoattr) |
2273 | goto nla_put_failure; |
2274 | if (pinfo->filled & MPATH_INFO_FRAME_QLEN) |
2275 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, |
2276 | pinfo->frame_qlen); |
2277 | if (pinfo->filled & MPATH_INFO_SN) |
2278 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN, |
2279 | pinfo->sn); |
2280 | if (pinfo->filled & MPATH_INFO_METRIC) |
2281 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, |
2282 | pinfo->metric); |
2283 | if (pinfo->filled & MPATH_INFO_EXPTIME) |
2284 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, |
2285 | pinfo->exptime); |
2286 | if (pinfo->filled & MPATH_INFO_FLAGS) |
2287 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, |
2288 | pinfo->flags); |
2289 | if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) |
2290 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, |
2291 | pinfo->discovery_timeout); |
2292 | if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) |
2293 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, |
2294 | pinfo->discovery_retries); |
2295 | |
2296 | nla_nest_end(msg, pinfoattr); |
2297 | |
2298 | return genlmsg_end(msg, hdr); |
2299 | |
2300 | nla_put_failure: |
2301 | genlmsg_cancel(msg, hdr); |
2302 | return -EMSGSIZE; |
2303 | } |
2304 | |
2305 | static int nl80211_dump_mpath(struct sk_buff *skb, |
2306 | struct netlink_callback *cb) |
2307 | { |
2308 | struct mpath_info pinfo; |
2309 | struct cfg80211_registered_device *dev; |
2310 | struct net_device *netdev; |
2311 | u8 dst[ETH_ALEN]; |
2312 | u8 next_hop[ETH_ALEN]; |
2313 | int ifidx = cb->args[0]; |
2314 | int path_idx = cb->args[1]; |
2315 | int err; |
2316 | |
2317 | if (!ifidx) |
2318 | ifidx = nl80211_get_ifidx(cb); |
2319 | if (ifidx < 0) |
2320 | return ifidx; |
2321 | |
2322 | rtnl_lock(); |
2323 | |
2324 | netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); |
2325 | if (!netdev) { |
2326 | err = -ENODEV; |
2327 | goto out_rtnl; |
2328 | } |
2329 | |
2330 | dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); |
2331 | if (IS_ERR(dev)) { |
2332 | err = PTR_ERR(dev); |
2333 | goto out_rtnl; |
2334 | } |
2335 | |
2336 | if (!dev->ops->dump_mpath) { |
2337 | err = -EOPNOTSUPP; |
2338 | goto out_err; |
2339 | } |
2340 | |
2341 | if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
2342 | err = -EOPNOTSUPP; |
2343 | goto out_err; |
2344 | } |
2345 | |
2346 | while (1) { |
2347 | err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, |
2348 | dst, next_hop, &pinfo); |
2349 | if (err == -ENOENT) |
2350 | break; |
2351 | if (err) |
2352 | goto out_err; |
2353 | |
2354 | if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, |
2355 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
2356 | netdev, dst, next_hop, |
2357 | &pinfo) < 0) |
2358 | goto out; |
2359 | |
2360 | path_idx++; |
2361 | } |
2362 | |
2363 | |
2364 | out: |
2365 | cb->args[1] = path_idx; |
2366 | err = skb->len; |
2367 | out_err: |
2368 | cfg80211_unlock_rdev(dev); |
2369 | out_rtnl: |
2370 | rtnl_unlock(); |
2371 | |
2372 | return err; |
2373 | } |
2374 | |
2375 | static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) |
2376 | { |
2377 | struct cfg80211_registered_device *rdev; |
2378 | int err; |
2379 | struct net_device *dev; |
2380 | struct mpath_info pinfo; |
2381 | struct sk_buff *msg; |
2382 | u8 *dst = NULL; |
2383 | u8 next_hop[ETH_ALEN]; |
2384 | |
2385 | memset(&pinfo, 0, sizeof(pinfo)); |
2386 | |
2387 | if (!info->attrs[NL80211_ATTR_MAC]) |
2388 | return -EINVAL; |
2389 | |
2390 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2391 | |
2392 | rtnl_lock(); |
2393 | |
2394 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2395 | if (err) |
2396 | goto out_rtnl; |
2397 | |
2398 | if (!rdev->ops->get_mpath) { |
2399 | err = -EOPNOTSUPP; |
2400 | goto out; |
2401 | } |
2402 | |
2403 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
2404 | err = -EOPNOTSUPP; |
2405 | goto out; |
2406 | } |
2407 | |
2408 | err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo); |
2409 | if (err) |
2410 | goto out; |
2411 | |
2412 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
2413 | if (!msg) |
2414 | goto out; |
2415 | |
2416 | if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, |
2417 | dev, dst, next_hop, &pinfo) < 0) |
2418 | goto out_free; |
2419 | |
2420 | err = genlmsg_reply(msg, info); |
2421 | goto out; |
2422 | |
2423 | out_free: |
2424 | nlmsg_free(msg); |
2425 | out: |
2426 | cfg80211_unlock_rdev(rdev); |
2427 | dev_put(dev); |
2428 | out_rtnl: |
2429 | rtnl_unlock(); |
2430 | |
2431 | return err; |
2432 | } |
2433 | |
2434 | static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) |
2435 | { |
2436 | struct cfg80211_registered_device *rdev; |
2437 | int err; |
2438 | struct net_device *dev; |
2439 | u8 *dst = NULL; |
2440 | u8 *next_hop = NULL; |
2441 | |
2442 | if (!info->attrs[NL80211_ATTR_MAC]) |
2443 | return -EINVAL; |
2444 | |
2445 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) |
2446 | return -EINVAL; |
2447 | |
2448 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2449 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); |
2450 | |
2451 | rtnl_lock(); |
2452 | |
2453 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2454 | if (err) |
2455 | goto out_rtnl; |
2456 | |
2457 | if (!rdev->ops->change_mpath) { |
2458 | err = -EOPNOTSUPP; |
2459 | goto out; |
2460 | } |
2461 | |
2462 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
2463 | err = -EOPNOTSUPP; |
2464 | goto out; |
2465 | } |
2466 | |
2467 | if (!netif_running(dev)) { |
2468 | err = -ENETDOWN; |
2469 | goto out; |
2470 | } |
2471 | |
2472 | err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); |
2473 | |
2474 | out: |
2475 | cfg80211_unlock_rdev(rdev); |
2476 | dev_put(dev); |
2477 | out_rtnl: |
2478 | rtnl_unlock(); |
2479 | |
2480 | return err; |
2481 | } |
2482 | static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) |
2483 | { |
2484 | struct cfg80211_registered_device *rdev; |
2485 | int err; |
2486 | struct net_device *dev; |
2487 | u8 *dst = NULL; |
2488 | u8 *next_hop = NULL; |
2489 | |
2490 | if (!info->attrs[NL80211_ATTR_MAC]) |
2491 | return -EINVAL; |
2492 | |
2493 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) |
2494 | return -EINVAL; |
2495 | |
2496 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2497 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); |
2498 | |
2499 | rtnl_lock(); |
2500 | |
2501 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2502 | if (err) |
2503 | goto out_rtnl; |
2504 | |
2505 | if (!rdev->ops->add_mpath) { |
2506 | err = -EOPNOTSUPP; |
2507 | goto out; |
2508 | } |
2509 | |
2510 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
2511 | err = -EOPNOTSUPP; |
2512 | goto out; |
2513 | } |
2514 | |
2515 | if (!netif_running(dev)) { |
2516 | err = -ENETDOWN; |
2517 | goto out; |
2518 | } |
2519 | |
2520 | err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); |
2521 | |
2522 | out: |
2523 | cfg80211_unlock_rdev(rdev); |
2524 | dev_put(dev); |
2525 | out_rtnl: |
2526 | rtnl_unlock(); |
2527 | |
2528 | return err; |
2529 | } |
2530 | |
2531 | static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) |
2532 | { |
2533 | struct cfg80211_registered_device *rdev; |
2534 | int err; |
2535 | struct net_device *dev; |
2536 | u8 *dst = NULL; |
2537 | |
2538 | if (info->attrs[NL80211_ATTR_MAC]) |
2539 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
2540 | |
2541 | rtnl_lock(); |
2542 | |
2543 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2544 | if (err) |
2545 | goto out_rtnl; |
2546 | |
2547 | if (!rdev->ops->del_mpath) { |
2548 | err = -EOPNOTSUPP; |
2549 | goto out; |
2550 | } |
2551 | |
2552 | err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst); |
2553 | |
2554 | out: |
2555 | cfg80211_unlock_rdev(rdev); |
2556 | dev_put(dev); |
2557 | out_rtnl: |
2558 | rtnl_unlock(); |
2559 | |
2560 | return err; |
2561 | } |
2562 | |
2563 | static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) |
2564 | { |
2565 | struct cfg80211_registered_device *rdev; |
2566 | int err; |
2567 | struct net_device *dev; |
2568 | struct bss_parameters params; |
2569 | |
2570 | memset(¶ms, 0, sizeof(params)); |
2571 | /* default to not changing parameters */ |
2572 | params.use_cts_prot = -1; |
2573 | params.use_short_preamble = -1; |
2574 | params.use_short_slot_time = -1; |
2575 | params.ap_isolate = -1; |
2576 | |
2577 | if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) |
2578 | params.use_cts_prot = |
2579 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); |
2580 | if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) |
2581 | params.use_short_preamble = |
2582 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); |
2583 | if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) |
2584 | params.use_short_slot_time = |
2585 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); |
2586 | if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { |
2587 | params.basic_rates = |
2588 | nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
2589 | params.basic_rates_len = |
2590 | nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
2591 | } |
2592 | if (info->attrs[NL80211_ATTR_AP_ISOLATE]) |
2593 | params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); |
2594 | |
2595 | rtnl_lock(); |
2596 | |
2597 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2598 | if (err) |
2599 | goto out_rtnl; |
2600 | |
2601 | if (!rdev->ops->change_bss) { |
2602 | err = -EOPNOTSUPP; |
2603 | goto out; |
2604 | } |
2605 | |
2606 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { |
2607 | err = -EOPNOTSUPP; |
2608 | goto out; |
2609 | } |
2610 | |
2611 | err = rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms); |
2612 | |
2613 | out: |
2614 | cfg80211_unlock_rdev(rdev); |
2615 | dev_put(dev); |
2616 | out_rtnl: |
2617 | rtnl_unlock(); |
2618 | |
2619 | return err; |
2620 | } |
2621 | |
2622 | static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { |
2623 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, |
2624 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, |
2625 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, |
2626 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, |
2627 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, |
2628 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, |
2629 | }; |
2630 | |
2631 | static int parse_reg_rule(struct nlattr *tb[], |
2632 | struct ieee80211_reg_rule *reg_rule) |
2633 | { |
2634 | struct ieee80211_freq_range *freq_range = ®_rule->freq_range; |
2635 | struct ieee80211_power_rule *power_rule = ®_rule->power_rule; |
2636 | |
2637 | if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) |
2638 | return -EINVAL; |
2639 | if (!tb[NL80211_ATTR_FREQ_RANGE_START]) |
2640 | return -EINVAL; |
2641 | if (!tb[NL80211_ATTR_FREQ_RANGE_END]) |
2642 | return -EINVAL; |
2643 | if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) |
2644 | return -EINVAL; |
2645 | if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) |
2646 | return -EINVAL; |
2647 | |
2648 | reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); |
2649 | |
2650 | freq_range->start_freq_khz = |
2651 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); |
2652 | freq_range->end_freq_khz = |
2653 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); |
2654 | freq_range->max_bandwidth_khz = |
2655 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); |
2656 | |
2657 | power_rule->max_eirp = |
2658 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); |
2659 | |
2660 | if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) |
2661 | power_rule->max_antenna_gain = |
2662 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); |
2663 | |
2664 | return 0; |
2665 | } |
2666 | |
2667 | static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) |
2668 | { |
2669 | int r; |
2670 | char *data = NULL; |
2671 | |
2672 | /* |
2673 | * You should only get this when cfg80211 hasn't yet initialized |
2674 | * completely when built-in to the kernel right between the time |
2675 | * window between nl80211_init() and regulatory_init(), if that is |
2676 | * even possible. |
2677 | */ |
2678 | mutex_lock(&cfg80211_mutex); |
2679 | if (unlikely(!cfg80211_regdomain)) { |
2680 | mutex_unlock(&cfg80211_mutex); |
2681 | return -EINPROGRESS; |
2682 | } |
2683 | mutex_unlock(&cfg80211_mutex); |
2684 | |
2685 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) |
2686 | return -EINVAL; |
2687 | |
2688 | data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); |
2689 | |
2690 | r = regulatory_hint_user(data); |
2691 | |
2692 | return r; |
2693 | } |
2694 | |
2695 | static int nl80211_get_mesh_params(struct sk_buff *skb, |
2696 | struct genl_info *info) |
2697 | { |
2698 | struct cfg80211_registered_device *rdev; |
2699 | struct mesh_config cur_params; |
2700 | int err; |
2701 | struct net_device *dev; |
2702 | void *hdr; |
2703 | struct nlattr *pinfoattr; |
2704 | struct sk_buff *msg; |
2705 | |
2706 | rtnl_lock(); |
2707 | |
2708 | /* Look up our device */ |
2709 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2710 | if (err) |
2711 | goto out_rtnl; |
2712 | |
2713 | if (!rdev->ops->get_mesh_params) { |
2714 | err = -EOPNOTSUPP; |
2715 | goto out; |
2716 | } |
2717 | |
2718 | /* Get the mesh params */ |
2719 | err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params); |
2720 | if (err) |
2721 | goto out; |
2722 | |
2723 | /* Draw up a netlink message to send back */ |
2724 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
2725 | if (!msg) { |
2726 | err = -ENOBUFS; |
2727 | goto out; |
2728 | } |
2729 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
2730 | NL80211_CMD_GET_MESH_PARAMS); |
2731 | if (!hdr) |
2732 | goto nla_put_failure; |
2733 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS); |
2734 | if (!pinfoattr) |
2735 | goto nla_put_failure; |
2736 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
2737 | NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, |
2738 | cur_params.dot11MeshRetryTimeout); |
2739 | NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, |
2740 | cur_params.dot11MeshConfirmTimeout); |
2741 | NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, |
2742 | cur_params.dot11MeshHoldingTimeout); |
2743 | NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, |
2744 | cur_params.dot11MeshMaxPeerLinks); |
2745 | NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES, |
2746 | cur_params.dot11MeshMaxRetries); |
2747 | NLA_PUT_U8(msg, NL80211_MESHCONF_TTL, |
2748 | cur_params.dot11MeshTTL); |
2749 | NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, |
2750 | cur_params.auto_open_plinks); |
2751 | NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, |
2752 | cur_params.dot11MeshHWMPmaxPREQretries); |
2753 | NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, |
2754 | cur_params.path_refresh_time); |
2755 | NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, |
2756 | cur_params.min_discovery_timeout); |
2757 | NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, |
2758 | cur_params.dot11MeshHWMPactivePathTimeout); |
2759 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, |
2760 | cur_params.dot11MeshHWMPpreqMinInterval); |
2761 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, |
2762 | cur_params.dot11MeshHWMPnetDiameterTraversalTime); |
2763 | NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, |
2764 | cur_params.dot11MeshHWMPRootMode); |
2765 | nla_nest_end(msg, pinfoattr); |
2766 | genlmsg_end(msg, hdr); |
2767 | err = genlmsg_reply(msg, info); |
2768 | goto out; |
2769 | |
2770 | nla_put_failure: |
2771 | genlmsg_cancel(msg, hdr); |
2772 | nlmsg_free(msg); |
2773 | err = -EMSGSIZE; |
2774 | out: |
2775 | /* Cleanup */ |
2776 | cfg80211_unlock_rdev(rdev); |
2777 | dev_put(dev); |
2778 | out_rtnl: |
2779 | rtnl_unlock(); |
2780 | |
2781 | return err; |
2782 | } |
2783 | |
2784 | #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ |
2785 | do {\ |
2786 | if (table[attr_num]) {\ |
2787 | cfg.param = nla_fn(table[attr_num]); \ |
2788 | mask |= (1 << (attr_num - 1)); \ |
2789 | } \ |
2790 | } while (0);\ |
2791 | |
2792 | static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { |
2793 | [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, |
2794 | [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, |
2795 | [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, |
2796 | [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, |
2797 | [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, |
2798 | [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, |
2799 | [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, |
2800 | |
2801 | [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, |
2802 | [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, |
2803 | [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, |
2804 | [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, |
2805 | [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, |
2806 | [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, |
2807 | }; |
2808 | |
2809 | static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) |
2810 | { |
2811 | int err; |
2812 | u32 mask; |
2813 | struct cfg80211_registered_device *rdev; |
2814 | struct net_device *dev; |
2815 | struct mesh_config cfg; |
2816 | struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; |
2817 | struct nlattr *parent_attr; |
2818 | |
2819 | parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS]; |
2820 | if (!parent_attr) |
2821 | return -EINVAL; |
2822 | if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, |
2823 | parent_attr, nl80211_meshconf_params_policy)) |
2824 | return -EINVAL; |
2825 | |
2826 | rtnl_lock(); |
2827 | |
2828 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
2829 | if (err) |
2830 | goto out_rtnl; |
2831 | |
2832 | if (!rdev->ops->set_mesh_params) { |
2833 | err = -EOPNOTSUPP; |
2834 | goto out; |
2835 | } |
2836 | |
2837 | /* This makes sure that there aren't more than 32 mesh config |
2838 | * parameters (otherwise our bitfield scheme would not work.) */ |
2839 | BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); |
2840 | |
2841 | /* Fill in the params struct */ |
2842 | mask = 0; |
2843 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, |
2844 | mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); |
2845 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, |
2846 | mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16); |
2847 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, |
2848 | mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16); |
2849 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, |
2850 | mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16); |
2851 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, |
2852 | mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); |
2853 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, |
2854 | mask, NL80211_MESHCONF_TTL, nla_get_u8); |
2855 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, |
2856 | mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8); |
2857 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, |
2858 | mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, |
2859 | nla_get_u8); |
2860 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, |
2861 | mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32); |
2862 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, |
2863 | mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, |
2864 | nla_get_u16); |
2865 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, |
2866 | mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, |
2867 | nla_get_u32); |
2868 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, |
2869 | mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, |
2870 | nla_get_u16); |
2871 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, |
2872 | dot11MeshHWMPnetDiameterTraversalTime, |
2873 | mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, |
2874 | nla_get_u16); |
2875 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, |
2876 | dot11MeshHWMPRootMode, mask, |
2877 | NL80211_MESHCONF_HWMP_ROOTMODE, |
2878 | nla_get_u8); |
2879 | |
2880 | /* Apply changes */ |
2881 | err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask); |
2882 | |
2883 | out: |
2884 | /* cleanup */ |
2885 | cfg80211_unlock_rdev(rdev); |
2886 | dev_put(dev); |
2887 | out_rtnl: |
2888 | rtnl_unlock(); |
2889 | |
2890 | return err; |
2891 | } |
2892 | |
2893 | #undef FILL_IN_MESH_PARAM_IF_SET |
2894 | |
2895 | static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) |
2896 | { |
2897 | struct sk_buff *msg; |
2898 | void *hdr = NULL; |
2899 | struct nlattr *nl_reg_rules; |
2900 | unsigned int i; |
2901 | int err = -EINVAL; |
2902 | |
2903 | mutex_lock(&cfg80211_mutex); |
2904 | |
2905 | if (!cfg80211_regdomain) |
2906 | goto out; |
2907 | |
2908 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
2909 | if (!msg) { |
2910 | err = -ENOBUFS; |
2911 | goto out; |
2912 | } |
2913 | |
2914 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
2915 | NL80211_CMD_GET_REG); |
2916 | if (!hdr) |
2917 | goto nla_put_failure; |
2918 | |
2919 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, |
2920 | cfg80211_regdomain->alpha2); |
2921 | |
2922 | nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); |
2923 | if (!nl_reg_rules) |
2924 | goto nla_put_failure; |
2925 | |
2926 | for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) { |
2927 | struct nlattr *nl_reg_rule; |
2928 | const struct ieee80211_reg_rule *reg_rule; |
2929 | const struct ieee80211_freq_range *freq_range; |
2930 | const struct ieee80211_power_rule *power_rule; |
2931 | |
2932 | reg_rule = &cfg80211_regdomain->reg_rules[i]; |
2933 | freq_range = ®_rule->freq_range; |
2934 | power_rule = ®_rule->power_rule; |
2935 | |
2936 | nl_reg_rule = nla_nest_start(msg, i); |
2937 | if (!nl_reg_rule) |
2938 | goto nla_put_failure; |
2939 | |
2940 | NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS, |
2941 | reg_rule->flags); |
2942 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START, |
2943 | freq_range->start_freq_khz); |
2944 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END, |
2945 | freq_range->end_freq_khz); |
2946 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, |
2947 | freq_range->max_bandwidth_khz); |
2948 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, |
2949 | power_rule->max_antenna_gain); |
2950 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, |
2951 | power_rule->max_eirp); |
2952 | |
2953 | nla_nest_end(msg, nl_reg_rule); |
2954 | } |
2955 | |
2956 | nla_nest_end(msg, nl_reg_rules); |
2957 | |
2958 | genlmsg_end(msg, hdr); |
2959 | err = genlmsg_reply(msg, info); |
2960 | goto out; |
2961 | |
2962 | nla_put_failure: |
2963 | genlmsg_cancel(msg, hdr); |
2964 | nlmsg_free(msg); |
2965 | err = -EMSGSIZE; |
2966 | out: |
2967 | mutex_unlock(&cfg80211_mutex); |
2968 | return err; |
2969 | } |
2970 | |
2971 | static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) |
2972 | { |
2973 | struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; |
2974 | struct nlattr *nl_reg_rule; |
2975 | char *alpha2 = NULL; |
2976 | int rem_reg_rules = 0, r = 0; |
2977 | u32 num_rules = 0, rule_idx = 0, size_of_regd; |
2978 | struct ieee80211_regdomain *rd = NULL; |
2979 | |
2980 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) |
2981 | return -EINVAL; |
2982 | |
2983 | if (!info->attrs[NL80211_ATTR_REG_RULES]) |
2984 | return -EINVAL; |
2985 | |
2986 | alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); |
2987 | |
2988 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], |
2989 | rem_reg_rules) { |
2990 | num_rules++; |
2991 | if (num_rules > NL80211_MAX_SUPP_REG_RULES) |
2992 | return -EINVAL; |
2993 | } |
2994 | |
2995 | mutex_lock(&cfg80211_mutex); |
2996 | |
2997 | if (!reg_is_valid_request(alpha2)) { |
2998 | r = -EINVAL; |
2999 | goto bad_reg; |
3000 | } |
3001 | |
3002 | size_of_regd = sizeof(struct ieee80211_regdomain) + |
3003 | (num_rules * sizeof(struct ieee80211_reg_rule)); |
3004 | |
3005 | rd = kzalloc(size_of_regd, GFP_KERNEL); |
3006 | if (!rd) { |
3007 | r = -ENOMEM; |
3008 | goto bad_reg; |
3009 | } |
3010 | |
3011 | rd->n_reg_rules = num_rules; |
3012 | rd->alpha2[0] = alpha2[0]; |
3013 | rd->alpha2[1] = alpha2[1]; |
3014 | |
3015 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], |
3016 | rem_reg_rules) { |
3017 | nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, |
3018 | nla_data(nl_reg_rule), nla_len(nl_reg_rule), |
3019 | reg_rule_policy); |
3020 | r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); |
3021 | if (r) |
3022 | goto bad_reg; |
3023 | |
3024 | rule_idx++; |
3025 | |
3026 | if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { |
3027 | r = -EINVAL; |
3028 | goto bad_reg; |
3029 | } |
3030 | } |
3031 | |
3032 | BUG_ON(rule_idx != num_rules); |
3033 | |
3034 | r = set_regdom(rd); |
3035 | |
3036 | mutex_unlock(&cfg80211_mutex); |
3037 | |
3038 | return r; |
3039 | |
3040 | bad_reg: |
3041 | mutex_unlock(&cfg80211_mutex); |
3042 | kfree(rd); |
3043 | return r; |
3044 | } |
3045 | |
3046 | static int validate_scan_freqs(struct nlattr *freqs) |
3047 | { |
3048 | struct nlattr *attr1, *attr2; |
3049 | int n_channels = 0, tmp1, tmp2; |
3050 | |
3051 | nla_for_each_nested(attr1, freqs, tmp1) { |
3052 | n_channels++; |
3053 | /* |
3054 | * Some hardware has a limited channel list for |
3055 | * scanning, and it is pretty much nonsensical |
3056 | * to scan for a channel twice, so disallow that |
3057 | * and don't require drivers to check that the |
3058 | * channel list they get isn't longer than what |
3059 | * they can scan, as long as they can scan all |
3060 | * the channels they registered at once. |
3061 | */ |
3062 | nla_for_each_nested(attr2, freqs, tmp2) |
3063 | if (attr1 != attr2 && |
3064 | nla_get_u32(attr1) == nla_get_u32(attr2)) |
3065 | return 0; |
3066 | } |
3067 | |
3068 | return n_channels; |
3069 | } |
3070 | |
3071 | static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) |
3072 | { |
3073 | struct cfg80211_registered_device *rdev; |
3074 | struct net_device *dev; |
3075 | struct cfg80211_scan_request *request; |
3076 | struct cfg80211_ssid *ssid; |
3077 | struct ieee80211_channel *channel; |
3078 | struct nlattr *attr; |
3079 | struct wiphy *wiphy; |
3080 | int err, tmp, n_ssids = 0, n_channels, i; |
3081 | enum ieee80211_band band; |
3082 | size_t ie_len; |
3083 | |
3084 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
3085 | return -EINVAL; |
3086 | |
3087 | rtnl_lock(); |
3088 | |
3089 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
3090 | if (err) |
3091 | goto out_rtnl; |
3092 | |
3093 | wiphy = &rdev->wiphy; |
3094 | |
3095 | if (!rdev->ops->scan) { |
3096 | err = -EOPNOTSUPP; |
3097 | goto out; |
3098 | } |
3099 | |
3100 | if (!netif_running(dev)) { |
3101 | err = -ENETDOWN; |
3102 | goto out; |
3103 | } |
3104 | |
3105 | if (rdev->scan_req) { |
3106 | err = -EBUSY; |
3107 | goto out; |
3108 | } |
3109 | |
3110 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
3111 | n_channels = validate_scan_freqs( |
3112 | info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); |
3113 | if (!n_channels) { |
3114 | err = -EINVAL; |
3115 | goto out; |
3116 | } |
3117 | } else { |
3118 | n_channels = 0; |
3119 | |
3120 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
3121 | if (wiphy->bands[band]) |
3122 | n_channels += wiphy->bands[band]->n_channels; |
3123 | } |
3124 | |
3125 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) |
3126 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) |
3127 | n_ssids++; |
3128 | |
3129 | if (n_ssids > wiphy->max_scan_ssids) { |
3130 | err = -EINVAL; |
3131 | goto out; |
3132 | } |
3133 | |
3134 | if (info->attrs[NL80211_ATTR_IE]) |
3135 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3136 | else |
3137 | ie_len = 0; |
3138 | |
3139 | if (ie_len > wiphy->max_scan_ie_len) { |
3140 | err = -EINVAL; |
3141 | goto out; |
3142 | } |
3143 | |
3144 | request = kzalloc(sizeof(*request) |
3145 | + sizeof(*ssid) * n_ssids |
3146 | + sizeof(channel) * n_channels |
3147 | + ie_len, GFP_KERNEL); |
3148 | if (!request) { |
3149 | err = -ENOMEM; |
3150 | goto out; |
3151 | } |
3152 | |
3153 | if (n_ssids) |
3154 | request->ssids = (void *)&request->channels[n_channels]; |
3155 | request->n_ssids = n_ssids; |
3156 | if (ie_len) { |
3157 | if (request->ssids) |
3158 | request->ie = (void *)(request->ssids + n_ssids); |
3159 | else |
3160 | request->ie = (void *)(request->channels + n_channels); |
3161 | } |
3162 | |
3163 | i = 0; |
3164 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
3165 | /* user specified, bail out if channel not found */ |
3166 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { |
3167 | struct ieee80211_channel *chan; |
3168 | |
3169 | chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); |
3170 | |
3171 | if (!chan) { |
3172 | err = -EINVAL; |
3173 | goto out_free; |
3174 | } |
3175 | |
3176 | /* ignore disabled channels */ |
3177 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
3178 | continue; |
3179 | |
3180 | request->channels[i] = chan; |
3181 | i++; |
3182 | } |
3183 | } else { |
3184 | /* all channels */ |
3185 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
3186 | int j; |
3187 | if (!wiphy->bands[band]) |
3188 | continue; |
3189 | for (j = 0; j < wiphy->bands[band]->n_channels; j++) { |
3190 | struct ieee80211_channel *chan; |
3191 | |
3192 | chan = &wiphy->bands[band]->channels[j]; |
3193 | |
3194 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
3195 | continue; |
3196 | |
3197 | request->channels[i] = chan; |
3198 | i++; |
3199 | } |
3200 | } |
3201 | } |
3202 | |
3203 | if (!i) { |
3204 | err = -EINVAL; |
3205 | goto out_free; |
3206 | } |
3207 | |
3208 | request->n_channels = i; |
3209 | |
3210 | i = 0; |
3211 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { |
3212 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { |
3213 | if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) { |
3214 | err = -EINVAL; |
3215 | goto out_free; |
3216 | } |
3217 | memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); |
3218 | request->ssids[i].ssid_len = nla_len(attr); |
3219 | i++; |
3220 | } |
3221 | } |
3222 | |
3223 | if (info->attrs[NL80211_ATTR_IE]) { |
3224 | request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3225 | memcpy((void *)request->ie, |
3226 | nla_data(info->attrs[NL80211_ATTR_IE]), |
3227 | request->ie_len); |
3228 | } |
3229 | |
3230 | request->dev = dev; |
3231 | request->wiphy = &rdev->wiphy; |
3232 | |
3233 | rdev->scan_req = request; |
3234 | err = rdev->ops->scan(&rdev->wiphy, dev, request); |
3235 | |
3236 | if (!err) { |
3237 | nl80211_send_scan_start(rdev, dev); |
3238 | dev_hold(dev); |
3239 | } |
3240 | |
3241 | out_free: |
3242 | if (err) { |
3243 | rdev->scan_req = NULL; |
3244 | kfree(request); |
3245 | } |
3246 | out: |
3247 | cfg80211_unlock_rdev(rdev); |
3248 | dev_put(dev); |
3249 | out_rtnl: |
3250 | rtnl_unlock(); |
3251 | |
3252 | return err; |
3253 | } |
3254 | |
3255 | static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
3256 | struct cfg80211_registered_device *rdev, |
3257 | struct wireless_dev *wdev, |
3258 | struct cfg80211_internal_bss *intbss) |
3259 | { |
3260 | struct cfg80211_bss *res = &intbss->pub; |
3261 | void *hdr; |
3262 | struct nlattr *bss; |
3263 | int i; |
3264 | |
3265 | ASSERT_WDEV_LOCK(wdev); |
3266 | |
3267 | hdr = nl80211hdr_put(msg, pid, seq, flags, |
3268 | NL80211_CMD_NEW_SCAN_RESULTS); |
3269 | if (!hdr) |
3270 | return -1; |
3271 | |
3272 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation); |
3273 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex); |
3274 | |
3275 | bss = nla_nest_start(msg, NL80211_ATTR_BSS); |
3276 | if (!bss) |
3277 | goto nla_put_failure; |
3278 | if (!is_zero_ether_addr(res->bssid)) |
3279 | NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); |
3280 | if (res->information_elements && res->len_information_elements) |
3281 | NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, |
3282 | res->len_information_elements, |
3283 | res->information_elements); |
3284 | if (res->beacon_ies && res->len_beacon_ies && |
3285 | res->beacon_ies != res->information_elements) |
3286 | NLA_PUT(msg, NL80211_BSS_BEACON_IES, |
3287 | res->len_beacon_ies, res->beacon_ies); |
3288 | if (res->tsf) |
3289 | NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); |
3290 | if (res->beacon_interval) |
3291 | NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); |
3292 | NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); |
3293 | NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); |
3294 | NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO, |
3295 | jiffies_to_msecs(jiffies - intbss->ts)); |
3296 | |
3297 | switch (rdev->wiphy.signal_type) { |
3298 | case CFG80211_SIGNAL_TYPE_MBM: |
3299 | NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); |
3300 | break; |
3301 | case CFG80211_SIGNAL_TYPE_UNSPEC: |
3302 | NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); |
3303 | break; |
3304 | default: |
3305 | break; |
3306 | } |
3307 | |
3308 | switch (wdev->iftype) { |
3309 | case NL80211_IFTYPE_STATION: |
3310 | if (intbss == wdev->current_bss) |
3311 | NLA_PUT_U32(msg, NL80211_BSS_STATUS, |
3312 | NL80211_BSS_STATUS_ASSOCIATED); |
3313 | else for (i = 0; i < MAX_AUTH_BSSES; i++) { |
3314 | if (intbss != wdev->auth_bsses[i]) |
3315 | continue; |
3316 | NLA_PUT_U32(msg, NL80211_BSS_STATUS, |
3317 | NL80211_BSS_STATUS_AUTHENTICATED); |
3318 | break; |
3319 | } |
3320 | break; |
3321 | case NL80211_IFTYPE_ADHOC: |
3322 | if (intbss == wdev->current_bss) |
3323 | NLA_PUT_U32(msg, NL80211_BSS_STATUS, |
3324 | NL80211_BSS_STATUS_IBSS_JOINED); |
3325 | break; |
3326 | default: |
3327 | break; |
3328 | } |
3329 | |
3330 | nla_nest_end(msg, bss); |
3331 | |
3332 | return genlmsg_end(msg, hdr); |
3333 | |
3334 | nla_put_failure: |
3335 | genlmsg_cancel(msg, hdr); |
3336 | return -EMSGSIZE; |
3337 | } |
3338 | |
3339 | static int nl80211_dump_scan(struct sk_buff *skb, |
3340 | struct netlink_callback *cb) |
3341 | { |
3342 | struct cfg80211_registered_device *rdev; |
3343 | struct net_device *dev; |
3344 | struct cfg80211_internal_bss *scan; |
3345 | struct wireless_dev *wdev; |
3346 | int ifidx = cb->args[0]; |
3347 | int start = cb->args[1], idx = 0; |
3348 | int err; |
3349 | |
3350 | if (!ifidx) |
3351 | ifidx = nl80211_get_ifidx(cb); |
3352 | if (ifidx < 0) |
3353 | return ifidx; |
3354 | cb->args[0] = ifidx; |
3355 | |
3356 | dev = dev_get_by_index(sock_net(skb->sk), ifidx); |
3357 | if (!dev) |
3358 | return -ENODEV; |
3359 | |
3360 | rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); |
3361 | if (IS_ERR(rdev)) { |
3362 | err = PTR_ERR(rdev); |
3363 | goto out_put_netdev; |
3364 | } |
3365 | |
3366 | wdev = dev->ieee80211_ptr; |
3367 | |
3368 | wdev_lock(wdev); |
3369 | spin_lock_bh(&rdev->bss_lock); |
3370 | cfg80211_bss_expire(rdev); |
3371 | |
3372 | list_for_each_entry(scan, &rdev->bss_list, list) { |
3373 | if (++idx <= start) |
3374 | continue; |
3375 | if (nl80211_send_bss(skb, |
3376 | NETLINK_CB(cb->skb).pid, |
3377 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
3378 | rdev, wdev, scan) < 0) { |
3379 | idx--; |
3380 | goto out; |
3381 | } |
3382 | } |
3383 | |
3384 | out: |
3385 | spin_unlock_bh(&rdev->bss_lock); |
3386 | wdev_unlock(wdev); |
3387 | |
3388 | cb->args[1] = idx; |
3389 | err = skb->len; |
3390 | cfg80211_unlock_rdev(rdev); |
3391 | out_put_netdev: |
3392 | dev_put(dev); |
3393 | |
3394 | return err; |
3395 | } |
3396 | |
3397 | static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, |
3398 | int flags, struct net_device *dev, |
3399 | struct survey_info *survey) |
3400 | { |
3401 | void *hdr; |
3402 | struct nlattr *infoattr; |
3403 | |
3404 | /* Survey without a channel doesn't make sense */ |
3405 | if (!survey->channel) |
3406 | return -EINVAL; |
3407 | |
3408 | hdr = nl80211hdr_put(msg, pid, seq, flags, |
3409 | NL80211_CMD_NEW_SURVEY_RESULTS); |
3410 | if (!hdr) |
3411 | return -ENOMEM; |
3412 | |
3413 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
3414 | |
3415 | infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); |
3416 | if (!infoattr) |
3417 | goto nla_put_failure; |
3418 | |
3419 | NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY, |
3420 | survey->channel->center_freq); |
3421 | if (survey->filled & SURVEY_INFO_NOISE_DBM) |
3422 | NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE, |
3423 | survey->noise); |
3424 | |
3425 | nla_nest_end(msg, infoattr); |
3426 | |
3427 | return genlmsg_end(msg, hdr); |
3428 | |
3429 | nla_put_failure: |
3430 | genlmsg_cancel(msg, hdr); |
3431 | return -EMSGSIZE; |
3432 | } |
3433 | |
3434 | static int nl80211_dump_survey(struct sk_buff *skb, |
3435 | struct netlink_callback *cb) |
3436 | { |
3437 | struct survey_info survey; |
3438 | struct cfg80211_registered_device *dev; |
3439 | struct net_device *netdev; |
3440 | int ifidx = cb->args[0]; |
3441 | int survey_idx = cb->args[1]; |
3442 | int res; |
3443 | |
3444 | if (!ifidx) |
3445 | ifidx = nl80211_get_ifidx(cb); |
3446 | if (ifidx < 0) |
3447 | return ifidx; |
3448 | cb->args[0] = ifidx; |
3449 | |
3450 | rtnl_lock(); |
3451 | |
3452 | netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); |
3453 | if (!netdev) { |
3454 | res = -ENODEV; |
3455 | goto out_rtnl; |
3456 | } |
3457 | |
3458 | dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); |
3459 | if (IS_ERR(dev)) { |
3460 | res = PTR_ERR(dev); |
3461 | goto out_rtnl; |
3462 | } |
3463 | |
3464 | if (!dev->ops->dump_survey) { |
3465 | res = -EOPNOTSUPP; |
3466 | goto out_err; |
3467 | } |
3468 | |
3469 | while (1) { |
3470 | res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx, |
3471 | &survey); |
3472 | if (res == -ENOENT) |
3473 | break; |
3474 | if (res) |
3475 | goto out_err; |
3476 | |
3477 | if (nl80211_send_survey(skb, |
3478 | NETLINK_CB(cb->skb).pid, |
3479 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
3480 | netdev, |
3481 | &survey) < 0) |
3482 | goto out; |
3483 | survey_idx++; |
3484 | } |
3485 | |
3486 | out: |
3487 | cb->args[1] = survey_idx; |
3488 | res = skb->len; |
3489 | out_err: |
3490 | cfg80211_unlock_rdev(dev); |
3491 | out_rtnl: |
3492 | rtnl_unlock(); |
3493 | |
3494 | return res; |
3495 | } |
3496 | |
3497 | static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type) |
3498 | { |
3499 | return auth_type <= NL80211_AUTHTYPE_MAX; |
3500 | } |
3501 | |
3502 | static bool nl80211_valid_wpa_versions(u32 wpa_versions) |
3503 | { |
3504 | return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | |
3505 | NL80211_WPA_VERSION_2)); |
3506 | } |
3507 | |
3508 | static bool nl80211_valid_akm_suite(u32 akm) |
3509 | { |
3510 | return akm == WLAN_AKM_SUITE_8021X || |
3511 | akm == WLAN_AKM_SUITE_PSK; |
3512 | } |
3513 | |
3514 | static bool nl80211_valid_cipher_suite(u32 cipher) |
3515 | { |
3516 | return cipher == WLAN_CIPHER_SUITE_WEP40 || |
3517 | cipher == WLAN_CIPHER_SUITE_WEP104 || |
3518 | cipher == WLAN_CIPHER_SUITE_TKIP || |
3519 | cipher == WLAN_CIPHER_SUITE_CCMP || |
3520 | cipher == WLAN_CIPHER_SUITE_AES_CMAC; |
3521 | } |
3522 | |
3523 | |
3524 | static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) |
3525 | { |
3526 | struct cfg80211_registered_device *rdev; |
3527 | struct net_device *dev; |
3528 | struct ieee80211_channel *chan; |
3529 | const u8 *bssid, *ssid, *ie = NULL; |
3530 | int err, ssid_len, ie_len = 0; |
3531 | enum nl80211_auth_type auth_type; |
3532 | struct key_parse key; |
3533 | bool local_state_change; |
3534 | |
3535 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
3536 | return -EINVAL; |
3537 | |
3538 | if (!info->attrs[NL80211_ATTR_MAC]) |
3539 | return -EINVAL; |
3540 | |
3541 | if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) |
3542 | return -EINVAL; |
3543 | |
3544 | if (!info->attrs[NL80211_ATTR_SSID]) |
3545 | return -EINVAL; |
3546 | |
3547 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
3548 | return -EINVAL; |
3549 | |
3550 | err = nl80211_parse_key(info, &key); |
3551 | if (err) |
3552 | return err; |
3553 | |
3554 | if (key.idx >= 0) { |
3555 | if (!key.p.key || !key.p.key_len) |
3556 | return -EINVAL; |
3557 | if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || |
3558 | key.p.key_len != WLAN_KEY_LEN_WEP40) && |
3559 | (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || |
3560 | key.p.key_len != WLAN_KEY_LEN_WEP104)) |
3561 | return -EINVAL; |
3562 | if (key.idx > 4) |
3563 | return -EINVAL; |
3564 | } else { |
3565 | key.p.key_len = 0; |
3566 | key.p.key = NULL; |
3567 | } |
3568 | |
3569 | rtnl_lock(); |
3570 | |
3571 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
3572 | if (err) |
3573 | goto unlock_rtnl; |
3574 | |
3575 | if (!rdev->ops->auth) { |
3576 | err = -EOPNOTSUPP; |
3577 | goto out; |
3578 | } |
3579 | |
3580 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
3581 | err = -EOPNOTSUPP; |
3582 | goto out; |
3583 | } |
3584 | |
3585 | if (!netif_running(dev)) { |
3586 | err = -ENETDOWN; |
3587 | goto out; |
3588 | } |
3589 | |
3590 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
3591 | chan = ieee80211_get_channel(&rdev->wiphy, |
3592 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
3593 | if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) { |
3594 | err = -EINVAL; |
3595 | goto out; |
3596 | } |
3597 | |
3598 | ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
3599 | ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
3600 | |
3601 | if (info->attrs[NL80211_ATTR_IE]) { |
3602 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
3603 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3604 | } |
3605 | |
3606 | auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); |
3607 | if (!nl80211_valid_auth_type(auth_type)) { |
3608 | err = -EINVAL; |
3609 | goto out; |
3610 | } |
3611 | |
3612 | local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; |
3613 | |
3614 | err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, |
3615 | ssid, ssid_len, ie, ie_len, |
3616 | key.p.key, key.p.key_len, key.idx, |
3617 | local_state_change); |
3618 | |
3619 | out: |
3620 | cfg80211_unlock_rdev(rdev); |
3621 | dev_put(dev); |
3622 | unlock_rtnl: |
3623 | rtnl_unlock(); |
3624 | return err; |
3625 | } |
3626 | |
3627 | static int nl80211_crypto_settings(struct genl_info *info, |
3628 | struct cfg80211_crypto_settings *settings, |
3629 | int cipher_limit) |
3630 | { |
3631 | memset(settings, 0, sizeof(*settings)); |
3632 | |
3633 | settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; |
3634 | |
3635 | if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { |
3636 | void *data; |
3637 | int len, i; |
3638 | |
3639 | data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); |
3640 | len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); |
3641 | settings->n_ciphers_pairwise = len / sizeof(u32); |
3642 | |
3643 | if (len % sizeof(u32)) |
3644 | return -EINVAL; |
3645 | |
3646 | if (settings->n_ciphers_pairwise > cipher_limit) |
3647 | return -EINVAL; |
3648 | |
3649 | memcpy(settings->ciphers_pairwise, data, len); |
3650 | |
3651 | for (i = 0; i < settings->n_ciphers_pairwise; i++) |
3652 | if (!nl80211_valid_cipher_suite( |
3653 | settings->ciphers_pairwise[i])) |
3654 | return -EINVAL; |
3655 | } |
3656 | |
3657 | if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { |
3658 | settings->cipher_group = |
3659 | nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); |
3660 | if (!nl80211_valid_cipher_suite(settings->cipher_group)) |
3661 | return -EINVAL; |
3662 | } |
3663 | |
3664 | if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { |
3665 | settings->wpa_versions = |
3666 | nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); |
3667 | if (!nl80211_valid_wpa_versions(settings->wpa_versions)) |
3668 | return -EINVAL; |
3669 | } |
3670 | |
3671 | if (info->attrs[NL80211_ATTR_AKM_SUITES]) { |
3672 | void *data; |
3673 | int len, i; |
3674 | |
3675 | data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); |
3676 | len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); |
3677 | settings->n_akm_suites = len / sizeof(u32); |
3678 | |
3679 | if (len % sizeof(u32)) |
3680 | return -EINVAL; |
3681 | |
3682 | memcpy(settings->akm_suites, data, len); |
3683 | |
3684 | for (i = 0; i < settings->n_ciphers_pairwise; i++) |
3685 | if (!nl80211_valid_akm_suite(settings->akm_suites[i])) |
3686 | return -EINVAL; |
3687 | } |
3688 | |
3689 | return 0; |
3690 | } |
3691 | |
3692 | static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) |
3693 | { |
3694 | struct cfg80211_registered_device *rdev; |
3695 | struct net_device *dev; |
3696 | struct cfg80211_crypto_settings crypto; |
3697 | struct ieee80211_channel *chan; |
3698 | const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL; |
3699 | int err, ssid_len, ie_len = 0; |
3700 | bool use_mfp = false; |
3701 | |
3702 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
3703 | return -EINVAL; |
3704 | |
3705 | if (!info->attrs[NL80211_ATTR_MAC] || |
3706 | !info->attrs[NL80211_ATTR_SSID] || |
3707 | !info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
3708 | return -EINVAL; |
3709 | |
3710 | rtnl_lock(); |
3711 | |
3712 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
3713 | if (err) |
3714 | goto unlock_rtnl; |
3715 | |
3716 | if (!rdev->ops->assoc) { |
3717 | err = -EOPNOTSUPP; |
3718 | goto out; |
3719 | } |
3720 | |
3721 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
3722 | err = -EOPNOTSUPP; |
3723 | goto out; |
3724 | } |
3725 | |
3726 | if (!netif_running(dev)) { |
3727 | err = -ENETDOWN; |
3728 | goto out; |
3729 | } |
3730 | |
3731 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
3732 | |
3733 | chan = ieee80211_get_channel(&rdev->wiphy, |
3734 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
3735 | if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) { |
3736 | err = -EINVAL; |
3737 | goto out; |
3738 | } |
3739 | |
3740 | ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
3741 | ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
3742 | |
3743 | if (info->attrs[NL80211_ATTR_IE]) { |
3744 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
3745 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3746 | } |
3747 | |
3748 | if (info->attrs[NL80211_ATTR_USE_MFP]) { |
3749 | enum nl80211_mfp mfp = |
3750 | nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); |
3751 | if (mfp == NL80211_MFP_REQUIRED) |
3752 | use_mfp = true; |
3753 | else if (mfp != NL80211_MFP_NO) { |
3754 | err = -EINVAL; |
3755 | goto out; |
3756 | } |
3757 | } |
3758 | |
3759 | if (info->attrs[NL80211_ATTR_PREV_BSSID]) |
3760 | prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); |
3761 | |
3762 | err = nl80211_crypto_settings(info, &crypto, 1); |
3763 | if (!err) |
3764 | err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, |
3765 | ssid, ssid_len, ie, ie_len, use_mfp, |
3766 | &crypto); |
3767 | |
3768 | out: |
3769 | cfg80211_unlock_rdev(rdev); |
3770 | dev_put(dev); |
3771 | unlock_rtnl: |
3772 | rtnl_unlock(); |
3773 | return err; |
3774 | } |
3775 | |
3776 | static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) |
3777 | { |
3778 | struct cfg80211_registered_device *rdev; |
3779 | struct net_device *dev; |
3780 | const u8 *ie = NULL, *bssid; |
3781 | int err, ie_len = 0; |
3782 | u16 reason_code; |
3783 | bool local_state_change; |
3784 | |
3785 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
3786 | return -EINVAL; |
3787 | |
3788 | if (!info->attrs[NL80211_ATTR_MAC]) |
3789 | return -EINVAL; |
3790 | |
3791 | if (!info->attrs[NL80211_ATTR_REASON_CODE]) |
3792 | return -EINVAL; |
3793 | |
3794 | rtnl_lock(); |
3795 | |
3796 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
3797 | if (err) |
3798 | goto unlock_rtnl; |
3799 | |
3800 | if (!rdev->ops->deauth) { |
3801 | err = -EOPNOTSUPP; |
3802 | goto out; |
3803 | } |
3804 | |
3805 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
3806 | err = -EOPNOTSUPP; |
3807 | goto out; |
3808 | } |
3809 | |
3810 | if (!netif_running(dev)) { |
3811 | err = -ENETDOWN; |
3812 | goto out; |
3813 | } |
3814 | |
3815 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
3816 | |
3817 | reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
3818 | if (reason_code == 0) { |
3819 | /* Reason Code 0 is reserved */ |
3820 | err = -EINVAL; |
3821 | goto out; |
3822 | } |
3823 | |
3824 | if (info->attrs[NL80211_ATTR_IE]) { |
3825 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
3826 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3827 | } |
3828 | |
3829 | local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; |
3830 | |
3831 | err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, |
3832 | local_state_change); |
3833 | |
3834 | out: |
3835 | cfg80211_unlock_rdev(rdev); |
3836 | dev_put(dev); |
3837 | unlock_rtnl: |
3838 | rtnl_unlock(); |
3839 | return err; |
3840 | } |
3841 | |
3842 | static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) |
3843 | { |
3844 | struct cfg80211_registered_device *rdev; |
3845 | struct net_device *dev; |
3846 | const u8 *ie = NULL, *bssid; |
3847 | int err, ie_len = 0; |
3848 | u16 reason_code; |
3849 | bool local_state_change; |
3850 | |
3851 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
3852 | return -EINVAL; |
3853 | |
3854 | if (!info->attrs[NL80211_ATTR_MAC]) |
3855 | return -EINVAL; |
3856 | |
3857 | if (!info->attrs[NL80211_ATTR_REASON_CODE]) |
3858 | return -EINVAL; |
3859 | |
3860 | rtnl_lock(); |
3861 | |
3862 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
3863 | if (err) |
3864 | goto unlock_rtnl; |
3865 | |
3866 | if (!rdev->ops->disassoc) { |
3867 | err = -EOPNOTSUPP; |
3868 | goto out; |
3869 | } |
3870 | |
3871 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
3872 | err = -EOPNOTSUPP; |
3873 | goto out; |
3874 | } |
3875 | |
3876 | if (!netif_running(dev)) { |
3877 | err = -ENETDOWN; |
3878 | goto out; |
3879 | } |
3880 | |
3881 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
3882 | |
3883 | reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
3884 | if (reason_code == 0) { |
3885 | /* Reason Code 0 is reserved */ |
3886 | err = -EINVAL; |
3887 | goto out; |
3888 | } |
3889 | |
3890 | if (info->attrs[NL80211_ATTR_IE]) { |
3891 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
3892 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3893 | } |
3894 | |
3895 | local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; |
3896 | |
3897 | err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, |
3898 | local_state_change); |
3899 | |
3900 | out: |
3901 | cfg80211_unlock_rdev(rdev); |
3902 | dev_put(dev); |
3903 | unlock_rtnl: |
3904 | rtnl_unlock(); |
3905 | return err; |
3906 | } |
3907 | |
3908 | static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) |
3909 | { |
3910 | struct cfg80211_registered_device *rdev; |
3911 | struct net_device *dev; |
3912 | struct cfg80211_ibss_params ibss; |
3913 | struct wiphy *wiphy; |
3914 | struct cfg80211_cached_keys *connkeys = NULL; |
3915 | int err; |
3916 | |
3917 | memset(&ibss, 0, sizeof(ibss)); |
3918 | |
3919 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
3920 | return -EINVAL; |
3921 | |
3922 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || |
3923 | !info->attrs[NL80211_ATTR_SSID] || |
3924 | !nla_len(info->attrs[NL80211_ATTR_SSID])) |
3925 | return -EINVAL; |
3926 | |
3927 | ibss.beacon_interval = 100; |
3928 | |
3929 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { |
3930 | ibss.beacon_interval = |
3931 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); |
3932 | if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) |
3933 | return -EINVAL; |
3934 | } |
3935 | |
3936 | rtnl_lock(); |
3937 | |
3938 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
3939 | if (err) |
3940 | goto unlock_rtnl; |
3941 | |
3942 | if (!rdev->ops->join_ibss) { |
3943 | err = -EOPNOTSUPP; |
3944 | goto out; |
3945 | } |
3946 | |
3947 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { |
3948 | err = -EOPNOTSUPP; |
3949 | goto out; |
3950 | } |
3951 | |
3952 | if (!netif_running(dev)) { |
3953 | err = -ENETDOWN; |
3954 | goto out; |
3955 | } |
3956 | |
3957 | wiphy = &rdev->wiphy; |
3958 | |
3959 | if (info->attrs[NL80211_ATTR_MAC]) |
3960 | ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
3961 | ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
3962 | ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
3963 | |
3964 | if (info->attrs[NL80211_ATTR_IE]) { |
3965 | ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
3966 | ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
3967 | } |
3968 | |
3969 | ibss.channel = ieee80211_get_channel(wiphy, |
3970 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
3971 | if (!ibss.channel || |
3972 | ibss.channel->flags & IEEE80211_CHAN_NO_IBSS || |
3973 | ibss.channel->flags & IEEE80211_CHAN_DISABLED) { |
3974 | err = -EINVAL; |
3975 | goto out; |
3976 | } |
3977 | |
3978 | ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; |
3979 | ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; |
3980 | |
3981 | if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { |
3982 | connkeys = nl80211_parse_connkeys(rdev, |
3983 | info->attrs[NL80211_ATTR_KEYS]); |
3984 | if (IS_ERR(connkeys)) { |
3985 | err = PTR_ERR(connkeys); |
3986 | connkeys = NULL; |
3987 | goto out; |
3988 | } |
3989 | } |
3990 | |
3991 | if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { |
3992 | u8 *rates = |
3993 | nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
3994 | int n_rates = |
3995 | nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
3996 | struct ieee80211_supported_band *sband = |
3997 | wiphy->bands[ibss.channel->band]; |
3998 | int i, j; |
3999 | |
4000 | if (n_rates == 0) { |
4001 | err = -EINVAL; |
4002 | goto out; |
4003 | } |
4004 | |
4005 | for (i = 0; i < n_rates; i++) { |
4006 | int rate = (rates[i] & 0x7f) * 5; |
4007 | bool found = false; |
4008 | |
4009 | for (j = 0; j < sband->n_bitrates; j++) { |
4010 | if (sband->bitrates[j].bitrate == rate) { |
4011 | found = true; |
4012 | ibss.basic_rates |= BIT(j); |
4013 | break; |
4014 | } |
4015 | } |
4016 | if (!found) { |
4017 | err = -EINVAL; |
4018 | goto out; |
4019 | } |
4020 | } |
4021 | } else { |
4022 | /* |
4023 | * If no rates were explicitly configured, |
4024 | * use the mandatory rate set for 11b or |
4025 | * 11a for maximum compatibility. |
4026 | */ |
4027 | struct ieee80211_supported_band *sband = |
4028 | wiphy->bands[ibss.channel->band]; |
4029 | int j; |
4030 | u32 flag = ibss.channel->band == IEEE80211_BAND_5GHZ ? |
4031 | IEEE80211_RATE_MANDATORY_A : |
4032 | IEEE80211_RATE_MANDATORY_B; |
4033 | |
4034 | for (j = 0; j < sband->n_bitrates; j++) { |
4035 | if (sband->bitrates[j].flags & flag) |
4036 | ibss.basic_rates |= BIT(j); |
4037 | } |
4038 | } |
4039 | |
4040 | err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); |
4041 | |
4042 | out: |
4043 | cfg80211_unlock_rdev(rdev); |
4044 | dev_put(dev); |
4045 | unlock_rtnl: |
4046 | if (err) |
4047 | kfree(connkeys); |
4048 | rtnl_unlock(); |
4049 | return err; |
4050 | } |
4051 | |
4052 | static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) |
4053 | { |
4054 | struct cfg80211_registered_device *rdev; |
4055 | struct net_device *dev; |
4056 | int err; |
4057 | |
4058 | rtnl_lock(); |
4059 | |
4060 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4061 | if (err) |
4062 | goto unlock_rtnl; |
4063 | |
4064 | if (!rdev->ops->leave_ibss) { |
4065 | err = -EOPNOTSUPP; |
4066 | goto out; |
4067 | } |
4068 | |
4069 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { |
4070 | err = -EOPNOTSUPP; |
4071 | goto out; |
4072 | } |
4073 | |
4074 | if (!netif_running(dev)) { |
4075 | err = -ENETDOWN; |
4076 | goto out; |
4077 | } |
4078 | |
4079 | err = cfg80211_leave_ibss(rdev, dev, false); |
4080 | |
4081 | out: |
4082 | cfg80211_unlock_rdev(rdev); |
4083 | dev_put(dev); |
4084 | unlock_rtnl: |
4085 | rtnl_unlock(); |
4086 | return err; |
4087 | } |
4088 | |
4089 | #ifdef CONFIG_NL80211_TESTMODE |
4090 | static struct genl_multicast_group nl80211_testmode_mcgrp = { |
4091 | .name = "testmode", |
4092 | }; |
4093 | |
4094 | static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) |
4095 | { |
4096 | struct cfg80211_registered_device *rdev; |
4097 | int err; |
4098 | |
4099 | if (!info->attrs[NL80211_ATTR_TESTDATA]) |
4100 | return -EINVAL; |
4101 | |
4102 | rtnl_lock(); |
4103 | |
4104 | rdev = cfg80211_get_dev_from_info(info); |
4105 | if (IS_ERR(rdev)) { |
4106 | err = PTR_ERR(rdev); |
4107 | goto unlock_rtnl; |
4108 | } |
4109 | |
4110 | err = -EOPNOTSUPP; |
4111 | if (rdev->ops->testmode_cmd) { |
4112 | rdev->testmode_info = info; |
4113 | err = rdev->ops->testmode_cmd(&rdev->wiphy, |
4114 | nla_data(info->attrs[NL80211_ATTR_TESTDATA]), |
4115 | nla_len(info->attrs[NL80211_ATTR_TESTDATA])); |
4116 | rdev->testmode_info = NULL; |
4117 | } |
4118 | |
4119 | cfg80211_unlock_rdev(rdev); |
4120 | |
4121 | unlock_rtnl: |
4122 | rtnl_unlock(); |
4123 | return err; |
4124 | } |
4125 | |
4126 | static struct sk_buff * |
4127 | __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, |
4128 | int approxlen, u32 pid, u32 seq, gfp_t gfp) |
4129 | { |
4130 | struct sk_buff *skb; |
4131 | void *hdr; |
4132 | struct nlattr *data; |
4133 | |
4134 | skb = nlmsg_new(approxlen + 100, gfp); |
4135 | if (!skb) |
4136 | return NULL; |
4137 | |
4138 | hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE); |
4139 | if (!hdr) { |
4140 | kfree_skb(skb); |
4141 | return NULL; |
4142 | } |
4143 | |
4144 | NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
4145 | data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); |
4146 | |
4147 | ((void **)skb->cb)[0] = rdev; |
4148 | ((void **)skb->cb)[1] = hdr; |
4149 | ((void **)skb->cb)[2] = data; |
4150 | |
4151 | return skb; |
4152 | |
4153 | nla_put_failure: |
4154 | kfree_skb(skb); |
4155 | return NULL; |
4156 | } |
4157 | |
4158 | struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, |
4159 | int approxlen) |
4160 | { |
4161 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
4162 | |
4163 | if (WARN_ON(!rdev->testmode_info)) |
4164 | return NULL; |
4165 | |
4166 | return __cfg80211_testmode_alloc_skb(rdev, approxlen, |
4167 | rdev->testmode_info->snd_pid, |
4168 | rdev->testmode_info->snd_seq, |
4169 | GFP_KERNEL); |
4170 | } |
4171 | EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); |
4172 | |
4173 | int cfg80211_testmode_reply(struct sk_buff *skb) |
4174 | { |
4175 | struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; |
4176 | void *hdr = ((void **)skb->cb)[1]; |
4177 | struct nlattr *data = ((void **)skb->cb)[2]; |
4178 | |
4179 | if (WARN_ON(!rdev->testmode_info)) { |
4180 | kfree_skb(skb); |
4181 | return -EINVAL; |
4182 | } |
4183 | |
4184 | nla_nest_end(skb, data); |
4185 | genlmsg_end(skb, hdr); |
4186 | return genlmsg_reply(skb, rdev->testmode_info); |
4187 | } |
4188 | EXPORT_SYMBOL(cfg80211_testmode_reply); |
4189 | |
4190 | struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, |
4191 | int approxlen, gfp_t gfp) |
4192 | { |
4193 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
4194 | |
4195 | return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); |
4196 | } |
4197 | EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); |
4198 | |
4199 | void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) |
4200 | { |
4201 | void *hdr = ((void **)skb->cb)[1]; |
4202 | struct nlattr *data = ((void **)skb->cb)[2]; |
4203 | |
4204 | nla_nest_end(skb, data); |
4205 | genlmsg_end(skb, hdr); |
4206 | genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp); |
4207 | } |
4208 | EXPORT_SYMBOL(cfg80211_testmode_event); |
4209 | #endif |
4210 | |
4211 | static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) |
4212 | { |
4213 | struct cfg80211_registered_device *rdev; |
4214 | struct net_device *dev; |
4215 | struct cfg80211_connect_params connect; |
4216 | struct wiphy *wiphy; |
4217 | struct cfg80211_cached_keys *connkeys = NULL; |
4218 | int err; |
4219 | |
4220 | memset(&connect, 0, sizeof(connect)); |
4221 | |
4222 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
4223 | return -EINVAL; |
4224 | |
4225 | if (!info->attrs[NL80211_ATTR_SSID] || |
4226 | !nla_len(info->attrs[NL80211_ATTR_SSID])) |
4227 | return -EINVAL; |
4228 | |
4229 | if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { |
4230 | connect.auth_type = |
4231 | nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); |
4232 | if (!nl80211_valid_auth_type(connect.auth_type)) |
4233 | return -EINVAL; |
4234 | } else |
4235 | connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
4236 | |
4237 | connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; |
4238 | |
4239 | err = nl80211_crypto_settings(info, &connect.crypto, |
4240 | NL80211_MAX_NR_CIPHER_SUITES); |
4241 | if (err) |
4242 | return err; |
4243 | rtnl_lock(); |
4244 | |
4245 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4246 | if (err) |
4247 | goto unlock_rtnl; |
4248 | |
4249 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
4250 | err = -EOPNOTSUPP; |
4251 | goto out; |
4252 | } |
4253 | |
4254 | if (!netif_running(dev)) { |
4255 | err = -ENETDOWN; |
4256 | goto out; |
4257 | } |
4258 | |
4259 | wiphy = &rdev->wiphy; |
4260 | |
4261 | if (info->attrs[NL80211_ATTR_MAC]) |
4262 | connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
4263 | connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
4264 | connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
4265 | |
4266 | if (info->attrs[NL80211_ATTR_IE]) { |
4267 | connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
4268 | connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
4269 | } |
4270 | |
4271 | if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
4272 | connect.channel = |
4273 | ieee80211_get_channel(wiphy, |
4274 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
4275 | if (!connect.channel || |
4276 | connect.channel->flags & IEEE80211_CHAN_DISABLED) { |
4277 | err = -EINVAL; |
4278 | goto out; |
4279 | } |
4280 | } |
4281 | |
4282 | if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { |
4283 | connkeys = nl80211_parse_connkeys(rdev, |
4284 | info->attrs[NL80211_ATTR_KEYS]); |
4285 | if (IS_ERR(connkeys)) { |
4286 | err = PTR_ERR(connkeys); |
4287 | connkeys = NULL; |
4288 | goto out; |
4289 | } |
4290 | } |
4291 | |
4292 | err = cfg80211_connect(rdev, dev, &connect, connkeys); |
4293 | |
4294 | out: |
4295 | cfg80211_unlock_rdev(rdev); |
4296 | dev_put(dev); |
4297 | unlock_rtnl: |
4298 | if (err) |
4299 | kfree(connkeys); |
4300 | rtnl_unlock(); |
4301 | return err; |
4302 | } |
4303 | |
4304 | static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) |
4305 | { |
4306 | struct cfg80211_registered_device *rdev; |
4307 | struct net_device *dev; |
4308 | int err; |
4309 | u16 reason; |
4310 | |
4311 | if (!info->attrs[NL80211_ATTR_REASON_CODE]) |
4312 | reason = WLAN_REASON_DEAUTH_LEAVING; |
4313 | else |
4314 | reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
4315 | |
4316 | if (reason == 0) |
4317 | return -EINVAL; |
4318 | |
4319 | rtnl_lock(); |
4320 | |
4321 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4322 | if (err) |
4323 | goto unlock_rtnl; |
4324 | |
4325 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
4326 | err = -EOPNOTSUPP; |
4327 | goto out; |
4328 | } |
4329 | |
4330 | if (!netif_running(dev)) { |
4331 | err = -ENETDOWN; |
4332 | goto out; |
4333 | } |
4334 | |
4335 | err = cfg80211_disconnect(rdev, dev, reason, true); |
4336 | |
4337 | out: |
4338 | cfg80211_unlock_rdev(rdev); |
4339 | dev_put(dev); |
4340 | unlock_rtnl: |
4341 | rtnl_unlock(); |
4342 | return err; |
4343 | } |
4344 | |
4345 | static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) |
4346 | { |
4347 | struct cfg80211_registered_device *rdev; |
4348 | struct net *net; |
4349 | int err; |
4350 | u32 pid; |
4351 | |
4352 | if (!info->attrs[NL80211_ATTR_PID]) |
4353 | return -EINVAL; |
4354 | |
4355 | pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); |
4356 | |
4357 | rtnl_lock(); |
4358 | |
4359 | rdev = cfg80211_get_dev_from_info(info); |
4360 | if (IS_ERR(rdev)) { |
4361 | err = PTR_ERR(rdev); |
4362 | goto out_rtnl; |
4363 | } |
4364 | |
4365 | net = get_net_ns_by_pid(pid); |
4366 | if (IS_ERR(net)) { |
4367 | err = PTR_ERR(net); |
4368 | goto out; |
4369 | } |
4370 | |
4371 | err = 0; |
4372 | |
4373 | /* check if anything to do */ |
4374 | if (net_eq(wiphy_net(&rdev->wiphy), net)) |
4375 | goto out_put_net; |
4376 | |
4377 | err = cfg80211_switch_netns(rdev, net); |
4378 | out_put_net: |
4379 | put_net(net); |
4380 | out: |
4381 | cfg80211_unlock_rdev(rdev); |
4382 | out_rtnl: |
4383 | rtnl_unlock(); |
4384 | return err; |
4385 | } |
4386 | |
4387 | static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) |
4388 | { |
4389 | struct cfg80211_registered_device *rdev; |
4390 | int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, |
4391 | struct cfg80211_pmksa *pmksa) = NULL; |
4392 | int err; |
4393 | struct net_device *dev; |
4394 | struct cfg80211_pmksa pmksa; |
4395 | |
4396 | memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); |
4397 | |
4398 | if (!info->attrs[NL80211_ATTR_MAC]) |
4399 | return -EINVAL; |
4400 | |
4401 | if (!info->attrs[NL80211_ATTR_PMKID]) |
4402 | return -EINVAL; |
4403 | |
4404 | rtnl_lock(); |
4405 | |
4406 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4407 | if (err) |
4408 | goto out_rtnl; |
4409 | |
4410 | pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); |
4411 | pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
4412 | |
4413 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
4414 | err = -EOPNOTSUPP; |
4415 | goto out; |
4416 | } |
4417 | |
4418 | switch (info->genlhdr->cmd) { |
4419 | case NL80211_CMD_SET_PMKSA: |
4420 | rdev_ops = rdev->ops->set_pmksa; |
4421 | break; |
4422 | case NL80211_CMD_DEL_PMKSA: |
4423 | rdev_ops = rdev->ops->del_pmksa; |
4424 | break; |
4425 | default: |
4426 | WARN_ON(1); |
4427 | break; |
4428 | } |
4429 | |
4430 | if (!rdev_ops) { |
4431 | err = -EOPNOTSUPP; |
4432 | goto out; |
4433 | } |
4434 | |
4435 | err = rdev_ops(&rdev->wiphy, dev, &pmksa); |
4436 | |
4437 | out: |
4438 | cfg80211_unlock_rdev(rdev); |
4439 | dev_put(dev); |
4440 | out_rtnl: |
4441 | rtnl_unlock(); |
4442 | |
4443 | return err; |
4444 | } |
4445 | |
4446 | static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) |
4447 | { |
4448 | struct cfg80211_registered_device *rdev; |
4449 | int err; |
4450 | struct net_device *dev; |
4451 | |
4452 | rtnl_lock(); |
4453 | |
4454 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4455 | if (err) |
4456 | goto out_rtnl; |
4457 | |
4458 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
4459 | err = -EOPNOTSUPP; |
4460 | goto out; |
4461 | } |
4462 | |
4463 | if (!rdev->ops->flush_pmksa) { |
4464 | err = -EOPNOTSUPP; |
4465 | goto out; |
4466 | } |
4467 | |
4468 | err = rdev->ops->flush_pmksa(&rdev->wiphy, dev); |
4469 | |
4470 | out: |
4471 | cfg80211_unlock_rdev(rdev); |
4472 | dev_put(dev); |
4473 | out_rtnl: |
4474 | rtnl_unlock(); |
4475 | |
4476 | return err; |
4477 | |
4478 | } |
4479 | |
4480 | static int nl80211_remain_on_channel(struct sk_buff *skb, |
4481 | struct genl_info *info) |
4482 | { |
4483 | struct cfg80211_registered_device *rdev; |
4484 | struct net_device *dev; |
4485 | struct ieee80211_channel *chan; |
4486 | struct sk_buff *msg; |
4487 | void *hdr; |
4488 | u64 cookie; |
4489 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
4490 | u32 freq, duration; |
4491 | int err; |
4492 | |
4493 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || |
4494 | !info->attrs[NL80211_ATTR_DURATION]) |
4495 | return -EINVAL; |
4496 | |
4497 | duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); |
4498 | |
4499 | /* |
4500 | * We should be on that channel for at least one jiffie, |
4501 | * and more than 5 seconds seems excessive. |
4502 | */ |
4503 | if (!duration || !msecs_to_jiffies(duration) || duration > 5000) |
4504 | return -EINVAL; |
4505 | |
4506 | rtnl_lock(); |
4507 | |
4508 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4509 | if (err) |
4510 | goto unlock_rtnl; |
4511 | |
4512 | if (!rdev->ops->remain_on_channel) { |
4513 | err = -EOPNOTSUPP; |
4514 | goto out; |
4515 | } |
4516 | |
4517 | if (!netif_running(dev)) { |
4518 | err = -ENETDOWN; |
4519 | goto out; |
4520 | } |
4521 | |
4522 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { |
4523 | channel_type = nla_get_u32( |
4524 | info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); |
4525 | if (channel_type != NL80211_CHAN_NO_HT && |
4526 | channel_type != NL80211_CHAN_HT20 && |
4527 | channel_type != NL80211_CHAN_HT40PLUS && |
4528 | channel_type != NL80211_CHAN_HT40MINUS) { |
4529 | err = -EINVAL; |
4530 | goto out; |
4531 | } |
4532 | } |
4533 | |
4534 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
4535 | chan = rdev_freq_to_chan(rdev, freq, channel_type); |
4536 | if (chan == NULL) { |
4537 | err = -EINVAL; |
4538 | goto out; |
4539 | } |
4540 | |
4541 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4542 | if (!msg) { |
4543 | err = -ENOMEM; |
4544 | goto out; |
4545 | } |
4546 | |
4547 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
4548 | NL80211_CMD_REMAIN_ON_CHANNEL); |
4549 | |
4550 | if (IS_ERR(hdr)) { |
4551 | err = PTR_ERR(hdr); |
4552 | goto free_msg; |
4553 | } |
4554 | |
4555 | err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan, |
4556 | channel_type, duration, &cookie); |
4557 | |
4558 | if (err) |
4559 | goto free_msg; |
4560 | |
4561 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
4562 | |
4563 | genlmsg_end(msg, hdr); |
4564 | err = genlmsg_reply(msg, info); |
4565 | goto out; |
4566 | |
4567 | nla_put_failure: |
4568 | err = -ENOBUFS; |
4569 | free_msg: |
4570 | nlmsg_free(msg); |
4571 | out: |
4572 | cfg80211_unlock_rdev(rdev); |
4573 | dev_put(dev); |
4574 | unlock_rtnl: |
4575 | rtnl_unlock(); |
4576 | return err; |
4577 | } |
4578 | |
4579 | static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, |
4580 | struct genl_info *info) |
4581 | { |
4582 | struct cfg80211_registered_device *rdev; |
4583 | struct net_device *dev; |
4584 | u64 cookie; |
4585 | int err; |
4586 | |
4587 | if (!info->attrs[NL80211_ATTR_COOKIE]) |
4588 | return -EINVAL; |
4589 | |
4590 | rtnl_lock(); |
4591 | |
4592 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4593 | if (err) |
4594 | goto unlock_rtnl; |
4595 | |
4596 | if (!rdev->ops->cancel_remain_on_channel) { |
4597 | err = -EOPNOTSUPP; |
4598 | goto out; |
4599 | } |
4600 | |
4601 | if (!netif_running(dev)) { |
4602 | err = -ENETDOWN; |
4603 | goto out; |
4604 | } |
4605 | |
4606 | cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); |
4607 | |
4608 | err = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); |
4609 | |
4610 | out: |
4611 | cfg80211_unlock_rdev(rdev); |
4612 | dev_put(dev); |
4613 | unlock_rtnl: |
4614 | rtnl_unlock(); |
4615 | return err; |
4616 | } |
4617 | |
4618 | static u32 rateset_to_mask(struct ieee80211_supported_band *sband, |
4619 | u8 *rates, u8 rates_len) |
4620 | { |
4621 | u8 i; |
4622 | u32 mask = 0; |
4623 | |
4624 | for (i = 0; i < rates_len; i++) { |
4625 | int rate = (rates[i] & 0x7f) * 5; |
4626 | int ridx; |
4627 | for (ridx = 0; ridx < sband->n_bitrates; ridx++) { |
4628 | struct ieee80211_rate *srate = |
4629 | &sband->bitrates[ridx]; |
4630 | if (rate == srate->bitrate) { |
4631 | mask |= 1 << ridx; |
4632 | break; |
4633 | } |
4634 | } |
4635 | if (ridx == sband->n_bitrates) |
4636 | return 0; /* rate not found */ |
4637 | } |
4638 | |
4639 | return mask; |
4640 | } |
4641 | |
4642 | static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { |
4643 | [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, |
4644 | .len = NL80211_MAX_SUPP_RATES }, |
4645 | }; |
4646 | |
4647 | static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, |
4648 | struct genl_info *info) |
4649 | { |
4650 | struct nlattr *tb[NL80211_TXRATE_MAX + 1]; |
4651 | struct cfg80211_registered_device *rdev; |
4652 | struct cfg80211_bitrate_mask mask; |
4653 | int err, rem, i; |
4654 | struct net_device *dev; |
4655 | struct nlattr *tx_rates; |
4656 | struct ieee80211_supported_band *sband; |
4657 | |
4658 | if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) |
4659 | return -EINVAL; |
4660 | |
4661 | rtnl_lock(); |
4662 | |
4663 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4664 | if (err) |
4665 | goto unlock_rtnl; |
4666 | |
4667 | if (!rdev->ops->set_bitrate_mask) { |
4668 | err = -EOPNOTSUPP; |
4669 | goto unlock; |
4670 | } |
4671 | |
4672 | memset(&mask, 0, sizeof(mask)); |
4673 | /* Default to all rates enabled */ |
4674 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
4675 | sband = rdev->wiphy.bands[i]; |
4676 | mask.control[i].legacy = |
4677 | sband ? (1 << sband->n_bitrates) - 1 : 0; |
4678 | } |
4679 | |
4680 | /* |
4681 | * The nested attribute uses enum nl80211_band as the index. This maps |
4682 | * directly to the enum ieee80211_band values used in cfg80211. |
4683 | */ |
4684 | nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) |
4685 | { |
4686 | enum ieee80211_band band = nla_type(tx_rates); |
4687 | if (band < 0 || band >= IEEE80211_NUM_BANDS) { |
4688 | err = -EINVAL; |
4689 | goto unlock; |
4690 | } |
4691 | sband = rdev->wiphy.bands[band]; |
4692 | if (sband == NULL) { |
4693 | err = -EINVAL; |
4694 | goto unlock; |
4695 | } |
4696 | nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), |
4697 | nla_len(tx_rates), nl80211_txattr_policy); |
4698 | if (tb[NL80211_TXRATE_LEGACY]) { |
4699 | mask.control[band].legacy = rateset_to_mask( |
4700 | sband, |
4701 | nla_data(tb[NL80211_TXRATE_LEGACY]), |
4702 | nla_len(tb[NL80211_TXRATE_LEGACY])); |
4703 | if (mask.control[band].legacy == 0) { |
4704 | err = -EINVAL; |
4705 | goto unlock; |
4706 | } |
4707 | } |
4708 | } |
4709 | |
4710 | err = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask); |
4711 | |
4712 | unlock: |
4713 | dev_put(dev); |
4714 | cfg80211_unlock_rdev(rdev); |
4715 | unlock_rtnl: |
4716 | rtnl_unlock(); |
4717 | return err; |
4718 | } |
4719 | |
4720 | static int nl80211_register_action(struct sk_buff *skb, struct genl_info *info) |
4721 | { |
4722 | struct cfg80211_registered_device *rdev; |
4723 | struct net_device *dev; |
4724 | int err; |
4725 | |
4726 | if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) |
4727 | return -EINVAL; |
4728 | |
4729 | if (nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]) < 1) |
4730 | return -EINVAL; |
4731 | |
4732 | rtnl_lock(); |
4733 | |
4734 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4735 | if (err) |
4736 | goto unlock_rtnl; |
4737 | |
4738 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
4739 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { |
4740 | err = -EOPNOTSUPP; |
4741 | goto out; |
4742 | } |
4743 | |
4744 | /* not much point in registering if we can't reply */ |
4745 | if (!rdev->ops->action) { |
4746 | err = -EOPNOTSUPP; |
4747 | goto out; |
4748 | } |
4749 | |
4750 | err = cfg80211_mlme_register_action(dev->ieee80211_ptr, info->snd_pid, |
4751 | nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), |
4752 | nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); |
4753 | out: |
4754 | cfg80211_unlock_rdev(rdev); |
4755 | dev_put(dev); |
4756 | unlock_rtnl: |
4757 | rtnl_unlock(); |
4758 | return err; |
4759 | } |
4760 | |
4761 | static int nl80211_action(struct sk_buff *skb, struct genl_info *info) |
4762 | { |
4763 | struct cfg80211_registered_device *rdev; |
4764 | struct net_device *dev; |
4765 | struct ieee80211_channel *chan; |
4766 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
4767 | bool channel_type_valid = false; |
4768 | u32 freq; |
4769 | int err; |
4770 | void *hdr; |
4771 | u64 cookie; |
4772 | struct sk_buff *msg; |
4773 | |
4774 | if (!info->attrs[NL80211_ATTR_FRAME] || |
4775 | !info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
4776 | return -EINVAL; |
4777 | |
4778 | rtnl_lock(); |
4779 | |
4780 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4781 | if (err) |
4782 | goto unlock_rtnl; |
4783 | |
4784 | if (!rdev->ops->action) { |
4785 | err = -EOPNOTSUPP; |
4786 | goto out; |
4787 | } |
4788 | |
4789 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
4790 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { |
4791 | err = -EOPNOTSUPP; |
4792 | goto out; |
4793 | } |
4794 | |
4795 | if (!netif_running(dev)) { |
4796 | err = -ENETDOWN; |
4797 | goto out; |
4798 | } |
4799 | |
4800 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { |
4801 | channel_type = nla_get_u32( |
4802 | info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); |
4803 | if (channel_type != NL80211_CHAN_NO_HT && |
4804 | channel_type != NL80211_CHAN_HT20 && |
4805 | channel_type != NL80211_CHAN_HT40PLUS && |
4806 | channel_type != NL80211_CHAN_HT40MINUS) { |
4807 | err = -EINVAL; |
4808 | goto out; |
4809 | } |
4810 | channel_type_valid = true; |
4811 | } |
4812 | |
4813 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
4814 | chan = rdev_freq_to_chan(rdev, freq, channel_type); |
4815 | if (chan == NULL) { |
4816 | err = -EINVAL; |
4817 | goto out; |
4818 | } |
4819 | |
4820 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4821 | if (!msg) { |
4822 | err = -ENOMEM; |
4823 | goto out; |
4824 | } |
4825 | |
4826 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
4827 | NL80211_CMD_ACTION); |
4828 | |
4829 | if (IS_ERR(hdr)) { |
4830 | err = PTR_ERR(hdr); |
4831 | goto free_msg; |
4832 | } |
4833 | err = cfg80211_mlme_action(rdev, dev, chan, channel_type, |
4834 | channel_type_valid, |
4835 | nla_data(info->attrs[NL80211_ATTR_FRAME]), |
4836 | nla_len(info->attrs[NL80211_ATTR_FRAME]), |
4837 | &cookie); |
4838 | if (err) |
4839 | goto free_msg; |
4840 | |
4841 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
4842 | |
4843 | genlmsg_end(msg, hdr); |
4844 | err = genlmsg_reply(msg, info); |
4845 | goto out; |
4846 | |
4847 | nla_put_failure: |
4848 | err = -ENOBUFS; |
4849 | free_msg: |
4850 | nlmsg_free(msg); |
4851 | out: |
4852 | cfg80211_unlock_rdev(rdev); |
4853 | dev_put(dev); |
4854 | unlock_rtnl: |
4855 | rtnl_unlock(); |
4856 | return err; |
4857 | } |
4858 | |
4859 | static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) |
4860 | { |
4861 | struct cfg80211_registered_device *rdev; |
4862 | struct wireless_dev *wdev; |
4863 | struct net_device *dev; |
4864 | u8 ps_state; |
4865 | bool state; |
4866 | int err; |
4867 | |
4868 | if (!info->attrs[NL80211_ATTR_PS_STATE]) { |
4869 | err = -EINVAL; |
4870 | goto out; |
4871 | } |
4872 | |
4873 | ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); |
4874 | |
4875 | if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) { |
4876 | err = -EINVAL; |
4877 | goto out; |
4878 | } |
4879 | |
4880 | rtnl_lock(); |
4881 | |
4882 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4883 | if (err) |
4884 | goto unlock_rdev; |
4885 | |
4886 | wdev = dev->ieee80211_ptr; |
4887 | |
4888 | if (!rdev->ops->set_power_mgmt) { |
4889 | err = -EOPNOTSUPP; |
4890 | goto unlock_rdev; |
4891 | } |
4892 | |
4893 | state = (ps_state == NL80211_PS_ENABLED) ? true : false; |
4894 | |
4895 | if (state == wdev->ps) |
4896 | goto unlock_rdev; |
4897 | |
4898 | wdev->ps = state; |
4899 | |
4900 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, wdev->ps, |
4901 | wdev->ps_timeout)) |
4902 | /* assume this means it's off */ |
4903 | wdev->ps = false; |
4904 | |
4905 | unlock_rdev: |
4906 | cfg80211_unlock_rdev(rdev); |
4907 | dev_put(dev); |
4908 | rtnl_unlock(); |
4909 | |
4910 | out: |
4911 | return err; |
4912 | } |
4913 | |
4914 | static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) |
4915 | { |
4916 | struct cfg80211_registered_device *rdev; |
4917 | enum nl80211_ps_state ps_state; |
4918 | struct wireless_dev *wdev; |
4919 | struct net_device *dev; |
4920 | struct sk_buff *msg; |
4921 | void *hdr; |
4922 | int err; |
4923 | |
4924 | rtnl_lock(); |
4925 | |
4926 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4927 | if (err) |
4928 | goto unlock_rtnl; |
4929 | |
4930 | wdev = dev->ieee80211_ptr; |
4931 | |
4932 | if (!rdev->ops->set_power_mgmt) { |
4933 | err = -EOPNOTSUPP; |
4934 | goto out; |
4935 | } |
4936 | |
4937 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4938 | if (!msg) { |
4939 | err = -ENOMEM; |
4940 | goto out; |
4941 | } |
4942 | |
4943 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
4944 | NL80211_CMD_GET_POWER_SAVE); |
4945 | if (!hdr) { |
4946 | err = -ENOMEM; |
4947 | goto free_msg; |
4948 | } |
4949 | |
4950 | if (wdev->ps) |
4951 | ps_state = NL80211_PS_ENABLED; |
4952 | else |
4953 | ps_state = NL80211_PS_DISABLED; |
4954 | |
4955 | NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state); |
4956 | |
4957 | genlmsg_end(msg, hdr); |
4958 | err = genlmsg_reply(msg, info); |
4959 | goto out; |
4960 | |
4961 | nla_put_failure: |
4962 | err = -ENOBUFS; |
4963 | |
4964 | free_msg: |
4965 | nlmsg_free(msg); |
4966 | |
4967 | out: |
4968 | cfg80211_unlock_rdev(rdev); |
4969 | dev_put(dev); |
4970 | |
4971 | unlock_rtnl: |
4972 | rtnl_unlock(); |
4973 | |
4974 | return err; |
4975 | } |
4976 | |
4977 | static struct nla_policy |
4978 | nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { |
4979 | [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, |
4980 | [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, |
4981 | [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, |
4982 | }; |
4983 | |
4984 | static int nl80211_set_cqm_rssi(struct genl_info *info, |
4985 | s32 threshold, u32 hysteresis) |
4986 | { |
4987 | struct cfg80211_registered_device *rdev; |
4988 | struct wireless_dev *wdev; |
4989 | struct net_device *dev; |
4990 | int err; |
4991 | |
4992 | if (threshold > 0) |
4993 | return -EINVAL; |
4994 | |
4995 | rtnl_lock(); |
4996 | |
4997 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
4998 | if (err) |
4999 | goto unlock_rdev; |
5000 | |
5001 | wdev = dev->ieee80211_ptr; |
5002 | |
5003 | if (!rdev->ops->set_cqm_rssi_config) { |
5004 | err = -EOPNOTSUPP; |
5005 | goto unlock_rdev; |
5006 | } |
5007 | |
5008 | if (wdev->iftype != NL80211_IFTYPE_STATION) { |
5009 | err = -EOPNOTSUPP; |
5010 | goto unlock_rdev; |
5011 | } |
5012 | |
5013 | err = rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, |
5014 | threshold, hysteresis); |
5015 | |
5016 | unlock_rdev: |
5017 | cfg80211_unlock_rdev(rdev); |
5018 | dev_put(dev); |
5019 | rtnl_unlock(); |
5020 | |
5021 | return err; |
5022 | } |
5023 | |
5024 | static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) |
5025 | { |
5026 | struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; |
5027 | struct nlattr *cqm; |
5028 | int err; |
5029 | |
5030 | cqm = info->attrs[NL80211_ATTR_CQM]; |
5031 | if (!cqm) { |
5032 | err = -EINVAL; |
5033 | goto out; |
5034 | } |
5035 | |
5036 | err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, |
5037 | nl80211_attr_cqm_policy); |
5038 | if (err) |
5039 | goto out; |
5040 | |
5041 | if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && |
5042 | attrs[NL80211_ATTR_CQM_RSSI_HYST]) { |
5043 | s32 threshold; |
5044 | u32 hysteresis; |
5045 | threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); |
5046 | hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); |
5047 | err = nl80211_set_cqm_rssi(info, threshold, hysteresis); |
5048 | } else |
5049 | err = -EINVAL; |
5050 | |
5051 | out: |
5052 | return err; |
5053 | } |
5054 | |
5055 | static struct genl_ops nl80211_ops[] = { |
5056 | { |
5057 | .cmd = NL80211_CMD_GET_WIPHY, |
5058 | .doit = nl80211_get_wiphy, |
5059 | .dumpit = nl80211_dump_wiphy, |
5060 | .policy = nl80211_policy, |
5061 | /* can be retrieved by unprivileged users */ |
5062 | }, |
5063 | { |
5064 | .cmd = NL80211_CMD_SET_WIPHY, |
5065 | .doit = nl80211_set_wiphy, |
5066 | .policy = nl80211_policy, |
5067 | .flags = GENL_ADMIN_PERM, |
5068 | }, |
5069 | { |
5070 | .cmd = NL80211_CMD_GET_INTERFACE, |
5071 | .doit = nl80211_get_interface, |
5072 | .dumpit = nl80211_dump_interface, |
5073 | .policy = nl80211_policy, |
5074 | /* can be retrieved by unprivileged users */ |
5075 | }, |
5076 | { |
5077 | .cmd = NL80211_CMD_SET_INTERFACE, |
5078 | .doit = nl80211_set_interface, |
5079 | .policy = nl80211_policy, |
5080 | .flags = GENL_ADMIN_PERM, |
5081 | }, |
5082 | { |
5083 | .cmd = NL80211_CMD_NEW_INTERFACE, |
5084 | .doit = nl80211_new_interface, |
5085 | .policy = nl80211_policy, |
5086 | .flags = GENL_ADMIN_PERM, |
5087 | }, |
5088 | { |
5089 | .cmd = NL80211_CMD_DEL_INTERFACE, |
5090 | .doit = nl80211_del_interface, |
5091 | .policy = nl80211_policy, |
5092 | .flags = GENL_ADMIN_PERM, |
5093 | }, |
5094 | { |
5095 | .cmd = NL80211_CMD_GET_KEY, |
5096 | .doit = nl80211_get_key, |
5097 | .policy = nl80211_policy, |
5098 | .flags = GENL_ADMIN_PERM, |
5099 | }, |
5100 | { |
5101 | .cmd = NL80211_CMD_SET_KEY, |
5102 | .doit = nl80211_set_key, |
5103 | .policy = nl80211_policy, |
5104 | .flags = GENL_ADMIN_PERM, |
5105 | }, |
5106 | { |
5107 | .cmd = NL80211_CMD_NEW_KEY, |
5108 | .doit = nl80211_new_key, |
5109 | .policy = nl80211_policy, |
5110 | .flags = GENL_ADMIN_PERM, |
5111 | }, |
5112 | { |
5113 | .cmd = NL80211_CMD_DEL_KEY, |
5114 | .doit = nl80211_del_key, |
5115 | .policy = nl80211_policy, |
5116 | .flags = GENL_ADMIN_PERM, |
5117 | }, |
5118 | { |
5119 | .cmd = NL80211_CMD_SET_BEACON, |
5120 | .policy = nl80211_policy, |
5121 | .flags = GENL_ADMIN_PERM, |
5122 | .doit = nl80211_addset_beacon, |
5123 | }, |
5124 | { |
5125 | .cmd = NL80211_CMD_NEW_BEACON, |
5126 | .policy = nl80211_policy, |
5127 | .flags = GENL_ADMIN_PERM, |
5128 | .doit = nl80211_addset_beacon, |
5129 | }, |
5130 | { |
5131 | .cmd = NL80211_CMD_DEL_BEACON, |
5132 | .policy = nl80211_policy, |
5133 | .flags = GENL_ADMIN_PERM, |
5134 | .doit = nl80211_del_beacon, |
5135 | }, |
5136 | { |
5137 | .cmd = NL80211_CMD_GET_STATION, |
5138 | .doit = nl80211_get_station, |
5139 | .dumpit = nl80211_dump_station, |
5140 | .policy = nl80211_policy, |
5141 | }, |
5142 | { |
5143 | .cmd = NL80211_CMD_SET_STATION, |
5144 | .doit = nl80211_set_station, |
5145 | .policy = nl80211_policy, |
5146 | .flags = GENL_ADMIN_PERM, |
5147 | }, |
5148 | { |
5149 | .cmd = NL80211_CMD_NEW_STATION, |
5150 | .doit = nl80211_new_station, |
5151 | .policy = nl80211_policy, |
5152 | .flags = GENL_ADMIN_PERM, |
5153 | }, |
5154 | { |
5155 | .cmd = NL80211_CMD_DEL_STATION, |
5156 | .doit = nl80211_del_station, |
5157 | .policy = nl80211_policy, |
5158 | .flags = GENL_ADMIN_PERM, |
5159 | }, |
5160 | { |
5161 | .cmd = NL80211_CMD_GET_MPATH, |
5162 | .doit = nl80211_get_mpath, |
5163 | .dumpit = nl80211_dump_mpath, |
5164 | .policy = nl80211_policy, |
5165 | .flags = GENL_ADMIN_PERM, |
5166 | }, |
5167 | { |
5168 | .cmd = NL80211_CMD_SET_MPATH, |
5169 | .doit = nl80211_set_mpath, |
5170 | .policy = nl80211_policy, |
5171 | .flags = GENL_ADMIN_PERM, |
5172 | }, |
5173 | { |
5174 | .cmd = NL80211_CMD_NEW_MPATH, |
5175 | .doit = nl80211_new_mpath, |
5176 | .policy = nl80211_policy, |
5177 | .flags = GENL_ADMIN_PERM, |
5178 | }, |
5179 | { |
5180 | .cmd = NL80211_CMD_DEL_MPATH, |
5181 | .doit = nl80211_del_mpath, |
5182 | .policy = nl80211_policy, |
5183 | .flags = GENL_ADMIN_PERM, |
5184 | }, |
5185 | { |
5186 | .cmd = NL80211_CMD_SET_BSS, |
5187 | .doit = nl80211_set_bss, |
5188 | .policy = nl80211_policy, |
5189 | .flags = GENL_ADMIN_PERM, |
5190 | }, |
5191 | { |
5192 | .cmd = NL80211_CMD_GET_REG, |
5193 | .doit = nl80211_get_reg, |
5194 | .policy = nl80211_policy, |
5195 | /* can be retrieved by unprivileged users */ |
5196 | }, |
5197 | { |
5198 | .cmd = NL80211_CMD_SET_REG, |
5199 | .doit = nl80211_set_reg, |
5200 | .policy = nl80211_policy, |
5201 | .flags = GENL_ADMIN_PERM, |
5202 | }, |
5203 | { |
5204 | .cmd = NL80211_CMD_REQ_SET_REG, |
5205 | .doit = nl80211_req_set_reg, |
5206 | .policy = nl80211_policy, |
5207 | .flags = GENL_ADMIN_PERM, |
5208 | }, |
5209 | { |
5210 | .cmd = NL80211_CMD_GET_MESH_PARAMS, |
5211 | .doit = nl80211_get_mesh_params, |
5212 | .policy = nl80211_policy, |
5213 | /* can be retrieved by unprivileged users */ |
5214 | }, |
5215 | { |
5216 | .cmd = NL80211_CMD_SET_MESH_PARAMS, |
5217 | .doit = nl80211_set_mesh_params, |
5218 | .policy = nl80211_policy, |
5219 | .flags = GENL_ADMIN_PERM, |
5220 | }, |
5221 | { |
5222 | .cmd = NL80211_CMD_TRIGGER_SCAN, |
5223 | .doit = nl80211_trigger_scan, |
5224 | .policy = nl80211_policy, |
5225 | .flags = GENL_ADMIN_PERM, |
5226 | }, |
5227 | { |
5228 | .cmd = NL80211_CMD_GET_SCAN, |
5229 | .policy = nl80211_policy, |
5230 | .dumpit = nl80211_dump_scan, |
5231 | }, |
5232 | { |
5233 | .cmd = NL80211_CMD_AUTHENTICATE, |
5234 | .doit = nl80211_authenticate, |
5235 | .policy = nl80211_policy, |
5236 | .flags = GENL_ADMIN_PERM, |
5237 | }, |
5238 | { |
5239 | .cmd = NL80211_CMD_ASSOCIATE, |
5240 | .doit = nl80211_associate, |
5241 | .policy = nl80211_policy, |
5242 | .flags = GENL_ADMIN_PERM, |
5243 | }, |
5244 | { |
5245 | .cmd = NL80211_CMD_DEAUTHENTICATE, |
5246 | .doit = nl80211_deauthenticate, |
5247 | .policy = nl80211_policy, |
5248 | .flags = GENL_ADMIN_PERM, |
5249 | }, |
5250 | { |
5251 | .cmd = NL80211_CMD_DISASSOCIATE, |
5252 | .doit = nl80211_disassociate, |
5253 | .policy = nl80211_policy, |
5254 | .flags = GENL_ADMIN_PERM, |
5255 | }, |
5256 | { |
5257 | .cmd = NL80211_CMD_JOIN_IBSS, |
5258 | .doit = nl80211_join_ibss, |
5259 | .policy = nl80211_policy, |
5260 | .flags = GENL_ADMIN_PERM, |
5261 | }, |
5262 | { |
5263 | .cmd = NL80211_CMD_LEAVE_IBSS, |
5264 | .doit = nl80211_leave_ibss, |
5265 | .policy = nl80211_policy, |
5266 | .flags = GENL_ADMIN_PERM, |
5267 | }, |
5268 | #ifdef CONFIG_NL80211_TESTMODE |
5269 | { |
5270 | .cmd = NL80211_CMD_TESTMODE, |
5271 | .doit = nl80211_testmode_do, |
5272 | .policy = nl80211_policy, |
5273 | .flags = GENL_ADMIN_PERM, |
5274 | }, |
5275 | #endif |
5276 | { |
5277 | .cmd = NL80211_CMD_CONNECT, |
5278 | .doit = nl80211_connect, |
5279 | .policy = nl80211_policy, |
5280 | .flags = GENL_ADMIN_PERM, |
5281 | }, |
5282 | { |
5283 | .cmd = NL80211_CMD_DISCONNECT, |
5284 | .doit = nl80211_disconnect, |
5285 | .policy = nl80211_policy, |
5286 | .flags = GENL_ADMIN_PERM, |
5287 | }, |
5288 | { |
5289 | .cmd = NL80211_CMD_SET_WIPHY_NETNS, |
5290 | .doit = nl80211_wiphy_netns, |
5291 | .policy = nl80211_policy, |
5292 | .flags = GENL_ADMIN_PERM, |
5293 | }, |
5294 | { |
5295 | .cmd = NL80211_CMD_GET_SURVEY, |
5296 | .policy = nl80211_policy, |
5297 | .dumpit = nl80211_dump_survey, |
5298 | }, |
5299 | { |
5300 | .cmd = NL80211_CMD_SET_PMKSA, |
5301 | .doit = nl80211_setdel_pmksa, |
5302 | .policy = nl80211_policy, |
5303 | .flags = GENL_ADMIN_PERM, |
5304 | }, |
5305 | { |
5306 | .cmd = NL80211_CMD_DEL_PMKSA, |
5307 | .doit = nl80211_setdel_pmksa, |
5308 | .policy = nl80211_policy, |
5309 | .flags = GENL_ADMIN_PERM, |
5310 | }, |
5311 | { |
5312 | .cmd = NL80211_CMD_FLUSH_PMKSA, |
5313 | .doit = nl80211_flush_pmksa, |
5314 | .policy = nl80211_policy, |
5315 | .flags = GENL_ADMIN_PERM, |
5316 | }, |
5317 | { |
5318 | .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, |
5319 | .doit = nl80211_remain_on_channel, |
5320 | .policy = nl80211_policy, |
5321 | .flags = GENL_ADMIN_PERM, |
5322 | }, |
5323 | { |
5324 | .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, |
5325 | .doit = nl80211_cancel_remain_on_channel, |
5326 | .policy = nl80211_policy, |
5327 | .flags = GENL_ADMIN_PERM, |
5328 | }, |
5329 | { |
5330 | .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, |
5331 | .doit = nl80211_set_tx_bitrate_mask, |
5332 | .policy = nl80211_policy, |
5333 | .flags = GENL_ADMIN_PERM, |
5334 | }, |
5335 | { |
5336 | .cmd = NL80211_CMD_REGISTER_ACTION, |
5337 | .doit = nl80211_register_action, |
5338 | .policy = nl80211_policy, |
5339 | .flags = GENL_ADMIN_PERM, |
5340 | }, |
5341 | { |
5342 | .cmd = NL80211_CMD_ACTION, |
5343 | .doit = nl80211_action, |
5344 | .policy = nl80211_policy, |
5345 | .flags = GENL_ADMIN_PERM, |
5346 | }, |
5347 | { |
5348 | .cmd = NL80211_CMD_SET_POWER_SAVE, |
5349 | .doit = nl80211_set_power_save, |
5350 | .policy = nl80211_policy, |
5351 | .flags = GENL_ADMIN_PERM, |
5352 | }, |
5353 | { |
5354 | .cmd = NL80211_CMD_GET_POWER_SAVE, |
5355 | .doit = nl80211_get_power_save, |
5356 | .policy = nl80211_policy, |
5357 | /* can be retrieved by unprivileged users */ |
5358 | }, |
5359 | { |
5360 | .cmd = NL80211_CMD_SET_CQM, |
5361 | .doit = nl80211_set_cqm, |
5362 | .policy = nl80211_policy, |
5363 | .flags = GENL_ADMIN_PERM, |
5364 | }, |
5365 | { |
5366 | .cmd = NL80211_CMD_SET_CHANNEL, |
5367 | .doit = nl80211_set_channel, |
5368 | .policy = nl80211_policy, |
5369 | .flags = GENL_ADMIN_PERM, |
5370 | }, |
5371 | }; |
5372 | |
5373 | static struct genl_multicast_group nl80211_mlme_mcgrp = { |
5374 | .name = "mlme", |
5375 | }; |
5376 | |
5377 | /* multicast groups */ |
5378 | static struct genl_multicast_group nl80211_config_mcgrp = { |
5379 | .name = "config", |
5380 | }; |
5381 | static struct genl_multicast_group nl80211_scan_mcgrp = { |
5382 | .name = "scan", |
5383 | }; |
5384 | static struct genl_multicast_group nl80211_regulatory_mcgrp = { |
5385 | .name = "regulatory", |
5386 | }; |
5387 | |
5388 | /* notification functions */ |
5389 | |
5390 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) |
5391 | { |
5392 | struct sk_buff *msg; |
5393 | |
5394 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
5395 | if (!msg) |
5396 | return; |
5397 | |
5398 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { |
5399 | nlmsg_free(msg); |
5400 | return; |
5401 | } |
5402 | |
5403 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5404 | nl80211_config_mcgrp.id, GFP_KERNEL); |
5405 | } |
5406 | |
5407 | static int nl80211_add_scan_req(struct sk_buff *msg, |
5408 | struct cfg80211_registered_device *rdev) |
5409 | { |
5410 | struct cfg80211_scan_request *req = rdev->scan_req; |
5411 | struct nlattr *nest; |
5412 | int i; |
5413 | |
5414 | ASSERT_RDEV_LOCK(rdev); |
5415 | |
5416 | if (WARN_ON(!req)) |
5417 | return 0; |
5418 | |
5419 | nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); |
5420 | if (!nest) |
5421 | goto nla_put_failure; |
5422 | for (i = 0; i < req->n_ssids; i++) |
5423 | NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid); |
5424 | nla_nest_end(msg, nest); |
5425 | |
5426 | nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); |
5427 | if (!nest) |
5428 | goto nla_put_failure; |
5429 | for (i = 0; i < req->n_channels; i++) |
5430 | NLA_PUT_U32(msg, i, req->channels[i]->center_freq); |
5431 | nla_nest_end(msg, nest); |
5432 | |
5433 | if (req->ie) |
5434 | NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie); |
5435 | |
5436 | return 0; |
5437 | nla_put_failure: |
5438 | return -ENOBUFS; |
5439 | } |
5440 | |
5441 | static int nl80211_send_scan_msg(struct sk_buff *msg, |
5442 | struct cfg80211_registered_device *rdev, |
5443 | struct net_device *netdev, |
5444 | u32 pid, u32 seq, int flags, |
5445 | u32 cmd) |
5446 | { |
5447 | void *hdr; |
5448 | |
5449 | hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); |
5450 | if (!hdr) |
5451 | return -1; |
5452 | |
5453 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5454 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5455 | |
5456 | /* ignore errors and send incomplete event anyway */ |
5457 | nl80211_add_scan_req(msg, rdev); |
5458 | |
5459 | return genlmsg_end(msg, hdr); |
5460 | |
5461 | nla_put_failure: |
5462 | genlmsg_cancel(msg, hdr); |
5463 | return -EMSGSIZE; |
5464 | } |
5465 | |
5466 | void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, |
5467 | struct net_device *netdev) |
5468 | { |
5469 | struct sk_buff *msg; |
5470 | |
5471 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
5472 | if (!msg) |
5473 | return; |
5474 | |
5475 | if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, |
5476 | NL80211_CMD_TRIGGER_SCAN) < 0) { |
5477 | nlmsg_free(msg); |
5478 | return; |
5479 | } |
5480 | |
5481 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5482 | nl80211_scan_mcgrp.id, GFP_KERNEL); |
5483 | } |
5484 | |
5485 | void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, |
5486 | struct net_device *netdev) |
5487 | { |
5488 | struct sk_buff *msg; |
5489 | |
5490 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
5491 | if (!msg) |
5492 | return; |
5493 | |
5494 | if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, |
5495 | NL80211_CMD_NEW_SCAN_RESULTS) < 0) { |
5496 | nlmsg_free(msg); |
5497 | return; |
5498 | } |
5499 | |
5500 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5501 | nl80211_scan_mcgrp.id, GFP_KERNEL); |
5502 | } |
5503 | |
5504 | void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, |
5505 | struct net_device *netdev) |
5506 | { |
5507 | struct sk_buff *msg; |
5508 | |
5509 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
5510 | if (!msg) |
5511 | return; |
5512 | |
5513 | if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, |
5514 | NL80211_CMD_SCAN_ABORTED) < 0) { |
5515 | nlmsg_free(msg); |
5516 | return; |
5517 | } |
5518 | |
5519 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5520 | nl80211_scan_mcgrp.id, GFP_KERNEL); |
5521 | } |
5522 | |
5523 | /* |
5524 | * This can happen on global regulatory changes or device specific settings |
5525 | * based on custom world regulatory domains. |
5526 | */ |
5527 | void nl80211_send_reg_change_event(struct regulatory_request *request) |
5528 | { |
5529 | struct sk_buff *msg; |
5530 | void *hdr; |
5531 | |
5532 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
5533 | if (!msg) |
5534 | return; |
5535 | |
5536 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); |
5537 | if (!hdr) { |
5538 | nlmsg_free(msg); |
5539 | return; |
5540 | } |
5541 | |
5542 | /* Userspace can always count this one always being set */ |
5543 | NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator); |
5544 | |
5545 | if (request->alpha2[0] == '0' && request->alpha2[1] == '0') |
5546 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
5547 | NL80211_REGDOM_TYPE_WORLD); |
5548 | else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') |
5549 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
5550 | NL80211_REGDOM_TYPE_CUSTOM_WORLD); |
5551 | else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || |
5552 | request->intersect) |
5553 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
5554 | NL80211_REGDOM_TYPE_INTERSECTION); |
5555 | else { |
5556 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
5557 | NL80211_REGDOM_TYPE_COUNTRY); |
5558 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2); |
5559 | } |
5560 | |
5561 | if (wiphy_idx_valid(request->wiphy_idx)) |
5562 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx); |
5563 | |
5564 | if (genlmsg_end(msg, hdr) < 0) { |
5565 | nlmsg_free(msg); |
5566 | return; |
5567 | } |
5568 | |
5569 | rcu_read_lock(); |
5570 | genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, |
5571 | GFP_ATOMIC); |
5572 | rcu_read_unlock(); |
5573 | |
5574 | return; |
5575 | |
5576 | nla_put_failure: |
5577 | genlmsg_cancel(msg, hdr); |
5578 | nlmsg_free(msg); |
5579 | } |
5580 | |
5581 | static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, |
5582 | struct net_device *netdev, |
5583 | const u8 *buf, size_t len, |
5584 | enum nl80211_commands cmd, gfp_t gfp) |
5585 | { |
5586 | struct sk_buff *msg; |
5587 | void *hdr; |
5588 | |
5589 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
5590 | if (!msg) |
5591 | return; |
5592 | |
5593 | hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); |
5594 | if (!hdr) { |
5595 | nlmsg_free(msg); |
5596 | return; |
5597 | } |
5598 | |
5599 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5600 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5601 | NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); |
5602 | |
5603 | if (genlmsg_end(msg, hdr) < 0) { |
5604 | nlmsg_free(msg); |
5605 | return; |
5606 | } |
5607 | |
5608 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5609 | nl80211_mlme_mcgrp.id, gfp); |
5610 | return; |
5611 | |
5612 | nla_put_failure: |
5613 | genlmsg_cancel(msg, hdr); |
5614 | nlmsg_free(msg); |
5615 | } |
5616 | |
5617 | void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, |
5618 | struct net_device *netdev, const u8 *buf, |
5619 | size_t len, gfp_t gfp) |
5620 | { |
5621 | nl80211_send_mlme_event(rdev, netdev, buf, len, |
5622 | NL80211_CMD_AUTHENTICATE, gfp); |
5623 | } |
5624 | |
5625 | void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, |
5626 | struct net_device *netdev, const u8 *buf, |
5627 | size_t len, gfp_t gfp) |
5628 | { |
5629 | nl80211_send_mlme_event(rdev, netdev, buf, len, |
5630 | NL80211_CMD_ASSOCIATE, gfp); |
5631 | } |
5632 | |
5633 | void nl80211_send_deauth(struct cfg80211_registered_device *rdev, |
5634 | struct net_device *netdev, const u8 *buf, |
5635 | size_t len, gfp_t gfp) |
5636 | { |
5637 | nl80211_send_mlme_event(rdev, netdev, buf, len, |
5638 | NL80211_CMD_DEAUTHENTICATE, gfp); |
5639 | } |
5640 | |
5641 | void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, |
5642 | struct net_device *netdev, const u8 *buf, |
5643 | size_t len, gfp_t gfp) |
5644 | { |
5645 | nl80211_send_mlme_event(rdev, netdev, buf, len, |
5646 | NL80211_CMD_DISASSOCIATE, gfp); |
5647 | } |
5648 | |
5649 | static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, |
5650 | struct net_device *netdev, int cmd, |
5651 | const u8 *addr, gfp_t gfp) |
5652 | { |
5653 | struct sk_buff *msg; |
5654 | void *hdr; |
5655 | |
5656 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
5657 | if (!msg) |
5658 | return; |
5659 | |
5660 | hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); |
5661 | if (!hdr) { |
5662 | nlmsg_free(msg); |
5663 | return; |
5664 | } |
5665 | |
5666 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5667 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5668 | NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT); |
5669 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); |
5670 | |
5671 | if (genlmsg_end(msg, hdr) < 0) { |
5672 | nlmsg_free(msg); |
5673 | return; |
5674 | } |
5675 | |
5676 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5677 | nl80211_mlme_mcgrp.id, gfp); |
5678 | return; |
5679 | |
5680 | nla_put_failure: |
5681 | genlmsg_cancel(msg, hdr); |
5682 | nlmsg_free(msg); |
5683 | } |
5684 | |
5685 | void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, |
5686 | struct net_device *netdev, const u8 *addr, |
5687 | gfp_t gfp) |
5688 | { |
5689 | nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, |
5690 | addr, gfp); |
5691 | } |
5692 | |
5693 | void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, |
5694 | struct net_device *netdev, const u8 *addr, |
5695 | gfp_t gfp) |
5696 | { |
5697 | nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, |
5698 | addr, gfp); |
5699 | } |
5700 | |
5701 | void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, |
5702 | struct net_device *netdev, const u8 *bssid, |
5703 | const u8 *req_ie, size_t req_ie_len, |
5704 | const u8 *resp_ie, size_t resp_ie_len, |
5705 | u16 status, gfp_t gfp) |
5706 | { |
5707 | struct sk_buff *msg; |
5708 | void *hdr; |
5709 | |
5710 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
5711 | if (!msg) |
5712 | return; |
5713 | |
5714 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); |
5715 | if (!hdr) { |
5716 | nlmsg_free(msg); |
5717 | return; |
5718 | } |
5719 | |
5720 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5721 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5722 | if (bssid) |
5723 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); |
5724 | NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status); |
5725 | if (req_ie) |
5726 | NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); |
5727 | if (resp_ie) |
5728 | NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); |
5729 | |
5730 | if (genlmsg_end(msg, hdr) < 0) { |
5731 | nlmsg_free(msg); |
5732 | return; |
5733 | } |
5734 | |
5735 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5736 | nl80211_mlme_mcgrp.id, gfp); |
5737 | return; |
5738 | |
5739 | nla_put_failure: |
5740 | genlmsg_cancel(msg, hdr); |
5741 | nlmsg_free(msg); |
5742 | |
5743 | } |
5744 | |
5745 | void nl80211_send_roamed(struct cfg80211_registered_device *rdev, |
5746 | struct net_device *netdev, const u8 *bssid, |
5747 | const u8 *req_ie, size_t req_ie_len, |
5748 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) |
5749 | { |
5750 | struct sk_buff *msg; |
5751 | void *hdr; |
5752 | |
5753 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
5754 | if (!msg) |
5755 | return; |
5756 | |
5757 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); |
5758 | if (!hdr) { |
5759 | nlmsg_free(msg); |
5760 | return; |
5761 | } |
5762 | |
5763 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5764 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5765 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); |
5766 | if (req_ie) |
5767 | NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); |
5768 | if (resp_ie) |
5769 | NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); |
5770 | |
5771 | if (genlmsg_end(msg, hdr) < 0) { |
5772 | nlmsg_free(msg); |
5773 | return; |
5774 | } |
5775 | |
5776 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5777 | nl80211_mlme_mcgrp.id, gfp); |
5778 | return; |
5779 | |
5780 | nla_put_failure: |
5781 | genlmsg_cancel(msg, hdr); |
5782 | nlmsg_free(msg); |
5783 | |
5784 | } |
5785 | |
5786 | void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, |
5787 | struct net_device *netdev, u16 reason, |
5788 | const u8 *ie, size_t ie_len, bool from_ap) |
5789 | { |
5790 | struct sk_buff *msg; |
5791 | void *hdr; |
5792 | |
5793 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
5794 | if (!msg) |
5795 | return; |
5796 | |
5797 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); |
5798 | if (!hdr) { |
5799 | nlmsg_free(msg); |
5800 | return; |
5801 | } |
5802 | |
5803 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5804 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5805 | if (from_ap && reason) |
5806 | NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason); |
5807 | if (from_ap) |
5808 | NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP); |
5809 | if (ie) |
5810 | NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie); |
5811 | |
5812 | if (genlmsg_end(msg, hdr) < 0) { |
5813 | nlmsg_free(msg); |
5814 | return; |
5815 | } |
5816 | |
5817 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5818 | nl80211_mlme_mcgrp.id, GFP_KERNEL); |
5819 | return; |
5820 | |
5821 | nla_put_failure: |
5822 | genlmsg_cancel(msg, hdr); |
5823 | nlmsg_free(msg); |
5824 | |
5825 | } |
5826 | |
5827 | void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, |
5828 | struct net_device *netdev, const u8 *bssid, |
5829 | gfp_t gfp) |
5830 | { |
5831 | struct sk_buff *msg; |
5832 | void *hdr; |
5833 | |
5834 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
5835 | if (!msg) |
5836 | return; |
5837 | |
5838 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); |
5839 | if (!hdr) { |
5840 | nlmsg_free(msg); |
5841 | return; |
5842 | } |
5843 | |
5844 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5845 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5846 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); |
5847 | |
5848 | if (genlmsg_end(msg, hdr) < 0) { |
5849 | nlmsg_free(msg); |
5850 | return; |
5851 | } |
5852 | |
5853 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5854 | nl80211_mlme_mcgrp.id, gfp); |
5855 | return; |
5856 | |
5857 | nla_put_failure: |
5858 | genlmsg_cancel(msg, hdr); |
5859 | nlmsg_free(msg); |
5860 | } |
5861 | |
5862 | void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, |
5863 | struct net_device *netdev, const u8 *addr, |
5864 | enum nl80211_key_type key_type, int key_id, |
5865 | const u8 *tsc, gfp_t gfp) |
5866 | { |
5867 | struct sk_buff *msg; |
5868 | void *hdr; |
5869 | |
5870 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
5871 | if (!msg) |
5872 | return; |
5873 | |
5874 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); |
5875 | if (!hdr) { |
5876 | nlmsg_free(msg); |
5877 | return; |
5878 | } |
5879 | |
5880 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5881 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5882 | if (addr) |
5883 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); |
5884 | NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type); |
5885 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id); |
5886 | if (tsc) |
5887 | NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc); |
5888 | |
5889 | if (genlmsg_end(msg, hdr) < 0) { |
5890 | nlmsg_free(msg); |
5891 | return; |
5892 | } |
5893 | |
5894 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5895 | nl80211_mlme_mcgrp.id, gfp); |
5896 | return; |
5897 | |
5898 | nla_put_failure: |
5899 | genlmsg_cancel(msg, hdr); |
5900 | nlmsg_free(msg); |
5901 | } |
5902 | |
5903 | void nl80211_send_beacon_hint_event(struct wiphy *wiphy, |
5904 | struct ieee80211_channel *channel_before, |
5905 | struct ieee80211_channel *channel_after) |
5906 | { |
5907 | struct sk_buff *msg; |
5908 | void *hdr; |
5909 | struct nlattr *nl_freq; |
5910 | |
5911 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
5912 | if (!msg) |
5913 | return; |
5914 | |
5915 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); |
5916 | if (!hdr) { |
5917 | nlmsg_free(msg); |
5918 | return; |
5919 | } |
5920 | |
5921 | /* |
5922 | * Since we are applying the beacon hint to a wiphy we know its |
5923 | * wiphy_idx is valid |
5924 | */ |
5925 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)); |
5926 | |
5927 | /* Before */ |
5928 | nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); |
5929 | if (!nl_freq) |
5930 | goto nla_put_failure; |
5931 | if (nl80211_msg_put_channel(msg, channel_before)) |
5932 | goto nla_put_failure; |
5933 | nla_nest_end(msg, nl_freq); |
5934 | |
5935 | /* After */ |
5936 | nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); |
5937 | if (!nl_freq) |
5938 | goto nla_put_failure; |
5939 | if (nl80211_msg_put_channel(msg, channel_after)) |
5940 | goto nla_put_failure; |
5941 | nla_nest_end(msg, nl_freq); |
5942 | |
5943 | if (genlmsg_end(msg, hdr) < 0) { |
5944 | nlmsg_free(msg); |
5945 | return; |
5946 | } |
5947 | |
5948 | rcu_read_lock(); |
5949 | genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, |
5950 | GFP_ATOMIC); |
5951 | rcu_read_unlock(); |
5952 | |
5953 | return; |
5954 | |
5955 | nla_put_failure: |
5956 | genlmsg_cancel(msg, hdr); |
5957 | nlmsg_free(msg); |
5958 | } |
5959 | |
5960 | static void nl80211_send_remain_on_chan_event( |
5961 | int cmd, struct cfg80211_registered_device *rdev, |
5962 | struct net_device *netdev, u64 cookie, |
5963 | struct ieee80211_channel *chan, |
5964 | enum nl80211_channel_type channel_type, |
5965 | unsigned int duration, gfp_t gfp) |
5966 | { |
5967 | struct sk_buff *msg; |
5968 | void *hdr; |
5969 | |
5970 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
5971 | if (!msg) |
5972 | return; |
5973 | |
5974 | hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); |
5975 | if (!hdr) { |
5976 | nlmsg_free(msg); |
5977 | return; |
5978 | } |
5979 | |
5980 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
5981 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
5982 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq); |
5983 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type); |
5984 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
5985 | |
5986 | if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL) |
5987 | NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); |
5988 | |
5989 | if (genlmsg_end(msg, hdr) < 0) { |
5990 | nlmsg_free(msg); |
5991 | return; |
5992 | } |
5993 | |
5994 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
5995 | nl80211_mlme_mcgrp.id, gfp); |
5996 | return; |
5997 | |
5998 | nla_put_failure: |
5999 | genlmsg_cancel(msg, hdr); |
6000 | nlmsg_free(msg); |
6001 | } |
6002 | |
6003 | void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev, |
6004 | struct net_device *netdev, u64 cookie, |
6005 | struct ieee80211_channel *chan, |
6006 | enum nl80211_channel_type channel_type, |
6007 | unsigned int duration, gfp_t gfp) |
6008 | { |
6009 | nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, |
6010 | rdev, netdev, cookie, chan, |
6011 | channel_type, duration, gfp); |
6012 | } |
6013 | |
6014 | void nl80211_send_remain_on_channel_cancel( |
6015 | struct cfg80211_registered_device *rdev, struct net_device *netdev, |
6016 | u64 cookie, struct ieee80211_channel *chan, |
6017 | enum nl80211_channel_type channel_type, gfp_t gfp) |
6018 | { |
6019 | nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, |
6020 | rdev, netdev, cookie, chan, |
6021 | channel_type, 0, gfp); |
6022 | } |
6023 | |
6024 | void nl80211_send_sta_event(struct cfg80211_registered_device *rdev, |
6025 | struct net_device *dev, const u8 *mac_addr, |
6026 | struct station_info *sinfo, gfp_t gfp) |
6027 | { |
6028 | struct sk_buff *msg; |
6029 | |
6030 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
6031 | if (!msg) |
6032 | return; |
6033 | |
6034 | if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) { |
6035 | nlmsg_free(msg); |
6036 | return; |
6037 | } |
6038 | |
6039 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
6040 | nl80211_mlme_mcgrp.id, gfp); |
6041 | } |
6042 | |
6043 | int nl80211_send_action(struct cfg80211_registered_device *rdev, |
6044 | struct net_device *netdev, u32 nlpid, |
6045 | int freq, const u8 *buf, size_t len, gfp_t gfp) |
6046 | { |
6047 | struct sk_buff *msg; |
6048 | void *hdr; |
6049 | int err; |
6050 | |
6051 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
6052 | if (!msg) |
6053 | return -ENOMEM; |
6054 | |
6055 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ACTION); |
6056 | if (!hdr) { |
6057 | nlmsg_free(msg); |
6058 | return -ENOMEM; |
6059 | } |
6060 | |
6061 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
6062 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
6063 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); |
6064 | NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); |
6065 | |
6066 | err = genlmsg_end(msg, hdr); |
6067 | if (err < 0) { |
6068 | nlmsg_free(msg); |
6069 | return err; |
6070 | } |
6071 | |
6072 | err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid); |
6073 | if (err < 0) |
6074 | return err; |
6075 | return 0; |
6076 | |
6077 | nla_put_failure: |
6078 | genlmsg_cancel(msg, hdr); |
6079 | nlmsg_free(msg); |
6080 | return -ENOBUFS; |
6081 | } |
6082 | |
6083 | void nl80211_send_action_tx_status(struct cfg80211_registered_device *rdev, |
6084 | struct net_device *netdev, u64 cookie, |
6085 | const u8 *buf, size_t len, bool ack, |
6086 | gfp_t gfp) |
6087 | { |
6088 | struct sk_buff *msg; |
6089 | void *hdr; |
6090 | |
6091 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
6092 | if (!msg) |
6093 | return; |
6094 | |
6095 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ACTION_TX_STATUS); |
6096 | if (!hdr) { |
6097 | nlmsg_free(msg); |
6098 | return; |
6099 | } |
6100 | |
6101 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
6102 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
6103 | NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); |
6104 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
6105 | if (ack) |
6106 | NLA_PUT_FLAG(msg, NL80211_ATTR_ACK); |
6107 | |
6108 | if (genlmsg_end(msg, hdr) < 0) { |
6109 | nlmsg_free(msg); |
6110 | return; |
6111 | } |
6112 | |
6113 | genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); |
6114 | return; |
6115 | |
6116 | nla_put_failure: |
6117 | genlmsg_cancel(msg, hdr); |
6118 | nlmsg_free(msg); |
6119 | } |
6120 | |
6121 | void |
6122 | nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, |
6123 | struct net_device *netdev, |
6124 | enum nl80211_cqm_rssi_threshold_event rssi_event, |
6125 | gfp_t gfp) |
6126 | { |
6127 | struct sk_buff *msg; |
6128 | struct nlattr *pinfoattr; |
6129 | void *hdr; |
6130 | |
6131 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
6132 | if (!msg) |
6133 | return; |
6134 | |
6135 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); |
6136 | if (!hdr) { |
6137 | nlmsg_free(msg); |
6138 | return; |
6139 | } |
6140 | |
6141 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
6142 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
6143 | |
6144 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); |
6145 | if (!pinfoattr) |
6146 | goto nla_put_failure; |
6147 | |
6148 | NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, |
6149 | rssi_event); |
6150 | |
6151 | nla_nest_end(msg, pinfoattr); |
6152 | |
6153 | if (genlmsg_end(msg, hdr) < 0) { |
6154 | nlmsg_free(msg); |
6155 | return; |
6156 | } |
6157 | |
6158 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
6159 | nl80211_mlme_mcgrp.id, gfp); |
6160 | return; |
6161 | |
6162 | nla_put_failure: |
6163 | genlmsg_cancel(msg, hdr); |
6164 | nlmsg_free(msg); |
6165 | } |
6166 | |
6167 | static int nl80211_netlink_notify(struct notifier_block * nb, |
6168 | unsigned long state, |
6169 | void *_notify) |
6170 | { |
6171 | struct netlink_notify *notify = _notify; |
6172 | struct cfg80211_registered_device *rdev; |
6173 | struct wireless_dev *wdev; |
6174 | |
6175 | if (state != NETLINK_URELEASE) |
6176 | return NOTIFY_DONE; |
6177 | |
6178 | rcu_read_lock(); |
6179 | |
6180 | list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) |
6181 | list_for_each_entry_rcu(wdev, &rdev->netdev_list, list) |
6182 | cfg80211_mlme_unregister_actions(wdev, notify->pid); |
6183 | |
6184 | rcu_read_unlock(); |
6185 | |
6186 | return NOTIFY_DONE; |
6187 | } |
6188 | |
6189 | static struct notifier_block nl80211_netlink_notifier = { |
6190 | .notifier_call = nl80211_netlink_notify, |
6191 | }; |
6192 | |
6193 | /* initialisation/exit functions */ |
6194 | |
6195 | int nl80211_init(void) |
6196 | { |
6197 | int err; |
6198 | |
6199 | err = genl_register_family_with_ops(&nl80211_fam, |
6200 | nl80211_ops, ARRAY_SIZE(nl80211_ops)); |
6201 | if (err) |
6202 | return err; |
6203 | |
6204 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); |
6205 | if (err) |
6206 | goto err_out; |
6207 | |
6208 | err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); |
6209 | if (err) |
6210 | goto err_out; |
6211 | |
6212 | err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); |
6213 | if (err) |
6214 | goto err_out; |
6215 | |
6216 | err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); |
6217 | if (err) |
6218 | goto err_out; |
6219 | |
6220 | #ifdef CONFIG_NL80211_TESTMODE |
6221 | err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); |
6222 | if (err) |
6223 | goto err_out; |
6224 | #endif |
6225 | |
6226 | err = netlink_register_notifier(&nl80211_netlink_notifier); |
6227 | if (err) |
6228 | goto err_out; |
6229 | |
6230 | return 0; |
6231 | err_out: |
6232 | genl_unregister_family(&nl80211_fam); |
6233 | return err; |
6234 | } |
6235 | |
6236 | void nl80211_exit(void) |
6237 | { |
6238 | netlink_unregister_notifier(&nl80211_netlink_notifier); |
6239 | genl_unregister_family(&nl80211_fam); |
6240 | } |
6241 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9